WO2011050577A1

WO2011050577A1 - System and method for realizing kerosene gas phase drying to transformers assembled on-site

Info

Publication number: WO2011050577A1
Application number: PCT/CN2010/001713
Authority: WO
Inventors: 刘翮; 种衍民; 冷晨; 刘小丹; 王一军
Original assignee: 特变电工衡阳变压器有限公司
Priority date: 2009-10-30
Filing date: 2010-10-28
Publication date: 2011-05-05
Also published as: EA201290253A1; EA030334B1

Abstract

A system and method for realizing kerosene gas phase drying to transformers assembled on-site. A transformer tank (11) for holding a transformer serves as a working container for gas phase drying process. The transformer tank is connected to gas phase drying equipments outside by connecting pipes. The gas phase drying equipments are assembled into a module. The system is simpler, while it reduces fabricating and installing cost for a transformer gas phase drying process system.

Description

一种对现场组装变压器实现煤油气相干燥的***和方法技术领域 System and method for realizing kerosene vapor phase drying on site assembled transformer

本发明涉及变压器生产制造领域，更具体地，本发明涉及一种在变压器安装现场利用煤油气相干燥处理方法对变压器器身进行气相干燥处理的***和方法。背景技术 BACKGROUND OF THE INVENTION 1. Field of the Invention This invention relates to the field of transformer manufacturing and, more particularly, to a system and method for vapor phase drying of a transformer body using a kerosene vapor phase drying process at a transformer installation site. Background technique

近年来，随着我国电力工业发展迅猛，特别是水电（清洁能源）的大力发展，而我国需要电力发展的工业大多分布在西南、西北边远地区（占 80 %以上），对于大型工件运输极为不便。另外，由于变压器体积较大，特别是对于大型变压器，由于受运输时道路的宽度和隧道的高度、桥梁承重等多因素的限制，一台几百吨重的大型变压器不可能整体运到安装现场，从而采用将变压器以解体的形式进行运输并在到达现场后重新组装的方式。但是，由于解体后的变压器存在着运输过程和现场装配过程时间长的情形，导致变压器上的绝缘件受潮。因此，对变压器如何进行现场干燥处理就成为必须要解决的关键技术。 In recent years, with the rapid development of China's power industry, especially the development of hydropower (clean energy), most of the industries that need electricity development in China are located in the southwest and northwestern regions (more than 80%), which is extremely inconvenient for large workpiece transportation. . In addition, due to the large size of the transformer, especially for large transformers, a large transformer with a weight of several hundred tons cannot be transported to the installation site due to various factors such as the width of the road during transportation and the height of the tunnel and the bearing capacity of the bridge. Thus, the way in which the transformer is transported in disintegrated form and reassembled upon arrival at the site is employed. However, due to the fact that the disassembled transformer has a long transportation process and a long on-site assembly process, the insulation on the transformer is exposed to moisture. Therefore, how to perform on-site drying of the transformer becomes a key technology that must be solved.

目前，现场干燥变压器一般采用如下几种传统干燥方法，如：热风真空千燥、喷淋真空干燥、电流加热干燥（包括油箱涡流加热法、零序电流加热法、短路电流加热法）等。然而，上述干燥方法都存在着加热温度低，加热时间长，加热不均匀、干燥不彻底等缺'点。 At present, the on-site drying transformer generally adopts the following several conventional drying methods, such as: hot air vacuum drying, spray vacuum drying, current heating drying (including fuel tank eddy current heating method, zero sequence current heating method, short circuit current heating method). However, the above drying methods all have the disadvantages of low heating temperature, long heating time, uneven heating, and incomplete drying.

但是，对于大容量、高电压等级的变压器，最好的干燥方法是采用气相干燥法，此方法因用煤油蒸气作为加热介质，而全干燥过程几乎是在一个无氧的状况下进行，所以具有加热温度高，干燥速度快、干燥时间短、加热均匀、干燥彻底、能清洗变压器上的杂物等优点。 However, for high-capacity, high-voltage transformers, the best drying method is the gas phase drying method, which uses kerosene vapor as the heating medium, and the full drying process is carried out almost in an anaerobic condition, so The heating temperature is high, the drying speed is fast, the drying time is short, the heating is uniform, the drying is thorough, and the impurities on the transformer can be cleaned.

采用上述气相干燥法的气相干燥***是一个较大而复杂的***，通常来讲，除了要设置固定的真空罐和庞大的冷却***外，还要设置有充足的水源和热源，以及进行大量的土建工作，比如，需耍将粗过滤器建设在地炕下以保证干燥容积与粗过滤器之间的高度差。目前变压器生产厂家都将气相干燥***做成固定式，即将其建在固定的基础上，用于在变压器制造厂内干燥处理变压器。通常，在这种固定式气相干燥***中，固定式真空罐是主体工作容器。进行干燥处理时，将被干燥物放在真空罐中，对真空罐完成加热、抽真空等工艺过程。此气相干燥***中的其它组成部分例如蒸发器等也是围绕着真空罐进行设置的。为了保证真空罐的温度，在真空罐的外壁上设置有用于加热的蒸气排管和用于保温的保温材料及外包铠装，且罐盖（门）有专门的液压***使其密封，对于卧式真空罐内还设置有放置变压器器身的平车，在真空罐外设置有使变压器进出罐的牵引装置等。 The gas phase drying system using the above gas phase drying method is a large and complicated system. Generally speaking, in addition to a fixed vacuum tank and a huge cooling system, a sufficient water source and heat source are provided, and a large amount of Civil work, for example, requires the coarse filter to be built under the mantle to ensure the height difference between the dry volume and the coarse filter. At present, transformer manufacturers have made the gas phase drying system a fixed type, which is to be built on a fixed basis for drying and processing transformers in a transformer manufacturing plant. Generally, in such a stationary vapor phase drying system, the stationary vacuum tank is a main working container. When drying, the dried object is placed in a vacuum tank, and the vacuum tank is subjected to a process such as heating, vacuuming, and the like. Other components in the vapor phase drying system, such as evaporators and the like, are also disposed around the vacuum tank. In order to ensure the temperature of the vacuum tank, a steam pipe for heating and an insulation material for outer insulation and an outer jacket are provided on the outer wall of the vacuum tank, and the can lid (door) has a special hydraulic system to seal it. The vacuum tank is also provided with a flat placed transformer body In the car, a traction device that allows the transformer to enter and exit the tank is provided outside the vacuum tank.

现参照图 1，对现有技术中外置蒸发器气相干燥*** （即固定式气相干燥***）的工作过程进行说明。图 1示出了现有技术的外置蒸发器气相干燥***的原理示意图，图中单箭头为煤油蒸气走向，双箭头为蒸气回程，三箭头为煤油回程；在图中， 1一真空装置， 2—冷却水***， 3—真空罐门装置， 4一真空罐， 5—冷凝器收集***， 6—废水接收装置， 7—蒸发器， 8—废油罐， 9一储油罐， 10—水蒸汽供应***。 Referring now to Figure 1, the operation of the prior art external vaporizer vapor phase drying system (i.e., stationary vapor phase drying system) will be described. 1 is a schematic view showing the principle of a prior art external vaporizer vapor drying system, in which the single arrow is the kerosene vapor direction, the double arrow is the vapor return, and the third arrow is the kerosene return; in the figure, a vacuum device, 2—cooling water system, 3—vacuum tank door device, 4 vacuum tank, 5—condenser collecting system, 6—waste water receiving device, 7—evaporator, 8—waste oil tank, 9 one oil storage tank, 10— Water vapor supply system.

固定式气相干燥处理的工作过程采用以下步骤： The working process of the stationary vapor phase drying process uses the following steps:

第一步：将变压器器身吊装到平车上后，用牵引装置将平车拉进真空罐内。 Step 1: After lifting the transformer body onto the flat car, pull the flat car into the vacuum tank with the traction device.

第二步：在变压器器身上插放温度传感器，然后关闭真空罐门，并用罐门压紧装置将真空罐门压紧。 Step 2: Insert the temperature sensor on the transformer body, then close the vacuum tank door and press the vacuum tank door with the tank door pressing device.

第三步：开始汽相干燥运行过程。气相干燥过程分为五个阶段： The third step: start the steam phase drying operation process. The vapor phase drying process is divided into five phases:

准备阶段，首先利用真空装置 1降低真空罐 4内的压力，而蒸发器 7开始通过水蒸汽供应*** 10所供应的水蒸汽给煤油升温。 In the preparation stage, the pressure inside the vacuum tank 4 is first lowered by means of the vacuum device 1, and the evaporator 7 starts to raise the temperature of the kerosene by the water vapor supplied from the steam supply system 10.

加热阶段，蒸发器 7继续通过水蒸汽供应*** 10所供应的水蒸汽给煤油升温，使煤油液体变成煤油蒸气，煤油蒸气通过管道被输送到真空罐 4内，从而加热放置在真空罐内的变压器器身，随着加热时间的增加，变压器器身逐渐被加热，变压器器身上的绝缘材料内的水分开始蒸发，使真空罐中形成由煤油蒸气、水蒸汽和真空罐泄漏的空气所组成的一种混合气体，这种混合气体经回程管道被输送到冷凝器 5，在冷凝器 5中水蒸汽和煤油蒸气在冷却水 *** 2的作用下被冷凝，而泄漏空气通过真空泵（图 1中未示出）被排入大气，同时经冷凝后的水和煤油混合物因比重不同，在冷凝器中得到分离，而后，分离出来的煤油被油泵（图 1中未示出）抽至蒸发器 7中循环再使用，分离出来的水分则排往废水接收装置 6中。 In the heating phase, the evaporator 7 continues to raise the temperature of the kerosene by the water vapor supplied from the steam supply system 10, so that the kerosene liquid becomes kerosene vapor, and the kerosene vapor is sent to the vacuum tank 4 through the pipeline, thereby heating and placing in the vacuum tank. Transformer body, as the heating time increases, the transformer body is gradually heated, and the moisture in the insulating material on the transformer body begins to evaporate, forming a vacuum tank containing air leaking from kerosene vapor, water vapor and vacuum tank. A mixed gas which is sent to a condenser 5 via a return line. In the condenser 5, water vapor and kerosene vapor are condensed by the cooling water system 2, and the leaked air passes through a vacuum pump (not shown in FIG. It is shown that it is discharged into the atmosphere, and the condensed water and kerosene mixture are separated in the condenser due to the specific gravity, and then the separated kerosene is pumped to the evaporator 7 by an oil pump (not shown in Fig. 1). The recycled water is discharged to the wastewater receiving device 6.

降压阶段，当变压器的绝缘材料中的水分大部分已经排除，则开始停止对煤油的加热和煤油蒸气的输送，同时利用真空装置 1将真空罐 4中的混合气体排出，使残留在绝缘材料中的煤油重新蒸发。 In the step-down phase, when most of the moisture in the insulating material of the transformer has been eliminated, the heating of the kerosene and the transportation of the kerosene vapor are stopped, and the mixed gas in the vacuum tank 4 is discharged by the vacuum device 1 to remain in the insulating material. The kerosene in the re-evaporation.

高真空阶段，最后进一步利用真空装置 1对真空罐 4抽真空，使残留在绝缘材料中深层的煤油和水进一步蒸发，直到干燥结束。 In the high vacuum stage, the vacuum tank 4 is finally further evacuated by the vacuum device 1 to further evaporate the deep kerosene and water remaining in the insulating material until the end of the drying.

解除真空阶段，即充气步骤，达到干燥结束条件后，充入空气从而解除真空罐内的真空，最后使产品出罐。 The vacuum stage, that is, the aeration step, is released, and after the drying end condition is reached, the air is filled to remove the vacuum in the vacuum tank, and finally the product is discharged out of the tank.

从以上固定式气相干燥的***设置和工作过程来看，该气相干燥处理***制作成本相当高，经济上很不划算，而且所述***受环境的限制很多，即必须采用固定式真空罐（容置变压器的容器），费用高，同时还需要具有充足的水源和热源，另外还要进行大量的土建工作，如真空罐体需做基础，粗过滤器需设置在低于真空罐的地坑内等，才能实现变压器气相干燥处理。因而，这种气相干燥设备不可能在变压器安装现场进行安装。发明内容 From the above fixed gas phase drying system setting and working process, the gas phase drying treatment system is relatively expensive to manufacture, economically uneconomical, and the system is limited by the environment, that is, a fixed vacuum tank must be used. Change The container of the press) is expensive, and it also needs to have sufficient water and heat sources. In addition, a large amount of civil works should be carried out. For example, the vacuum tank needs to be used as a foundation, and the coarse filter should be placed in a pit below the vacuum tank. In order to achieve the transformer vapor phase drying treatment. Therefore, such a vapor phase drying apparatus cannot be installed at the transformer installation site. Summary of the invention

为了解决现有技术中固定式气相干燥***具有的构成复杂、成本高和受环境限制等问题，本发明提供一种可以在变压器安装现场组装变压器以实现煤油气相干燥的***和方法，其可不受环境的限制就可在变压器安装现场对变压器进行气相干燥处理，从而可克服现有技术中存在的上述缺点和不足。 In order to solve the problems of the complicated structure, high cost and environmental limitation of the fixed vapor phase drying system in the prior art, the present invention provides a system and a method for assembling a transformer at a transformer installation site to realize vapor phase drying of kerosene, which is not applicable. The environmental limitation allows the transformer to be vapor-phase dried at the transformer installation site, thereby overcoming the above-mentioned shortcomings and deficiencies in the prior art.

为了实现上述发明目的，本发明采用以容置变压器的变压器油箱来替代固定式气相干燥 ***中的真空罐，并将气相干燥处理设备制成模块式，进而在将变压器运抵变压器安装现场后，对***各组成部分进行组装连接，从而实现在变压器安装现场对变压器进行气相干燥处理。 In order to achieve the above object, the present invention adopts a transformer tank for accommodating a transformer instead of a vacuum tank in a stationary vapor phase drying system, and the gas phase drying processing device is made into a modular type, and after the transformer is transported to the transformer installation site, The components of the system are assembled and connected to achieve vapor phase drying of the transformer at the transformer installation site.

解决本发明技术问题所采用的技术方案是该对现场组装变压器实现煤油气相干燥的系统，包括可容置变压器的工作容器和设置在所述工作容器外部的气相干燥设备，该*** 将容置变压器的变压器油箱作为气相干燥处理的工作容器，并且所述变压器油箱利用连接管道与设置在其外部的所述气相干燥设备相连接。 The technical solution adopted to solve the technical problem of the present invention is a system for realizing kerosene vapor phase drying of a field assembled transformer, comprising a working container capable of accommodating a transformer and a vapor phase drying device disposed outside the working container, the system accommodating the transformer The transformer tank is used as a working container for the vapor phase drying process, and the transformer tank is connected to the vapor phase drying device disposed outside thereof by a connecting pipe.

本发明的变压器油箱上还设置有用于与外部的气相干燥设备相连通的气路口、油路口和温度信号接入口。 The transformer tank of the present invention is further provided with a gas passage, an oil passage and a temperature signal inlet for communicating with an external vapor phase drying device.

其中，气路口包括煤油蒸气入口和真空口，所述煤油蒸气入口设置在变压器油箱侧面的中下部处，所述真空口设置在变压器油箱的顶部。 Wherein, the gas path port comprises a kerosene vapor inlet and a vacuum port, the kerosene vapor inlet is disposed at a middle and a lower portion of a side of the transformer tank, and the vacuum port is disposed at a top of the transformer tank.

优选的是，煤油蒸气入口内设置有导向管，并在导向管上设置有支撑挡板，用于将流入导向管内的煤油蒸气进行分流，从而避免煤油蒸气入口处变压器器身局部绝缘出现过热现象。 Preferably, a guiding tube is disposed in the kerosene vapor inlet, and a supporting baffle is disposed on the guiding tube for diverting the kerosene vapor flowing into the guiding tube, thereby preventing overheating of the partial insulation of the transformer body at the kerosene vapor inlet. .

进一步地，与真空口连接的真空管道上安装有干燥空气入口，其中，在干燥空气入口连接有干燥空气发生器。 Further, a vacuum air inlet is attached to the vacuum line connected to the vacuum port, and a dry air generator is connected to the dry air inlet.

本发明的油路口包括煤油第一出口和煤油第二出口。其中，煤油第一出口设置在距离变压器油箱底部有一定高度处的侧壁上，作为在气相干燥处理过程中变压器油箱的主出油口，煤油第二出口设置在变压器油箱的底部，用于将变压器油箱中的油全部排掉。煤油第一出口和煤油第二出口的外部连接有煤油返回模块。优选的是，所述温度信号接入口设于变压器油箱的中下部，通过所述温度信号接入口可在变压器油箱中设置若干个温度传感器，所述若干个温度传感器分别插放变压器器身的不同部位上，气相千燥设备中包括有用于对***进行自动控制的控制装置，所述控制装置通过输出线与所述各温度传感器相连，各温度传感器将所检测到的温度信号传输给控制装置。 The oil junction of the present invention includes a kerosene first outlet and a kerosene second outlet. Wherein, the first outlet of the kerosene is disposed on the side wall at a certain height from the bottom of the transformer tank, as the main outlet of the transformer tank during the gas phase drying process, and the second outlet of the kerosene is disposed at the bottom of the transformer tank for The oil in the transformer tank is completely drained. A kerosene return module is connected to the external outlet of the kerosene first outlet and the kerosene second outlet. Preferably, the temperature signal access port is disposed at a middle and a lower part of the transformer oil tank, and the temperature signal input port can be provided with a plurality of temperature sensors in the transformer oil tank, and the plurality of temperature sensors are respectively inserted into the transformer body. In the portion, the gas phase drying device includes a control device for automatically controlling the system, and the control device is connected to the temperature sensors through an output line, and each temperature sensor transmits the detected temperature signal to the control device.

本发明的气相干燥设备组装成模块式。所述气相干燥设备可制成一个气相干燥设备总成模块。 The vapor phase drying apparatus of the present invention is assembled into a modular type. The vapor phase drying apparatus can be fabricated into a vapor phase drying apparatus assembly module.

进一步地，本发明的气相干燥设备制成多个模块。所述多个模块包括真空冷凝模块、煤油蒸气加热模块、煤油返回模块、冷却模块。其中，冷却模块与真空冷凝模块、煤油蒸气加热模块分别连通，煤油蒸气加热模块与煤油返回模块、真空冷凝模块分别连通，所述变压器油箱与真空冷凝模块、煤油蒸气加热模块、煤油返回模块分别连通。 Further, the vapor phase drying apparatus of the present invention is made into a plurality of modules. The plurality of modules includes a vacuum condensation module, a kerosene vapor heating module, a kerosene return module, and a cooling module. The cooling module is respectively connected with the vacuum condensing module and the kerosene steam heating module, and the kerosene steam heating module is respectively connected with the kerosene return module and the vacuum condensing module, and the transformer oil tank is respectively connected with the vacuum condensing module, the kerosene steam heating module and the kerosene return module. .

优选的是，所述气相干燥设备中还包括有储油罐和废油罐，所述储油罐和废油罐也制成模块式，储油罐与真空冷凝模块、煤油蒸气加热模块分别连通，废油罐与煤油蒸气加热模块连通。 Preferably, the gas phase drying device further comprises an oil storage tank and a waste oil tank, wherein the oil storage tank and the waste oil tank are also made into a modular type, and the oil storage tank is connected to the vacuum condensation module and the kerosene steam heating module respectively. The waste oil tank is connected to the kerosene vapor heating module.

上述模块以模块组合的方式根据加工现场的地形自由地放置，并且它们之间设置有连接管道。采用本发明的多个模块，可简化气相干燥处理***的构成，且易于快速地将***的各部分组装，从而实现在变压器现场进行变压器气相干燥处理的目的。 The above modules are freely placed in a modular combination according to the terrain of the processing site, and a connecting pipe is provided between them. By adopting the plurality of modules of the present invention, the constitution of the vapor phase drying treatment system can be simplified, and the various parts of the system can be easily assembled quickly, thereby achieving the purpose of performing the vapor phase drying treatment of the transformer at the transformer site.

优选地，真空冷凝模块、煤油蒸气加热模块、煤油返回模块和冷却模块均采用集装箱结构。由于本发明的多个模块的外包装采用集装箱结构，所以使***的安装工作变得简单、易于操作。 Preferably, the vacuum condensing module, the kerosene vapor heating module, the kerosene return module, and the cooling module each employ a container structure. Since the outer package of the plurality of modules of the present invention employs a container structure, the installation work of the system is made simple and easy to operate.

进一步地，所述真空冷凝模块主要包括真空机组、冷凝器、收集罐，所述冷凝器的入口与变压器油箱上的真空口连通，其出口与真空机组、收集罐分别连通； Further, the vacuum condensing module mainly comprises a vacuum unit, a condenser and a collecting tank, wherein an inlet of the condenser is connected with a vacuum port on the transformer tank, and an outlet thereof is respectively connected with the vacuum unit and the collecting tank;

所述煤油蒸气加热模块主要包括蒸发器和导热油加热器，所述导热油加热器用于对蒸发器进行加热，所述蒸发器的入口与所述煤油返回模块连通，其出口与变压器油箱上的煤油蒸气入口连通； The kerosene vapor heating module mainly comprises an evaporator and a heat transfer oil heater, wherein the heat transfer oil heater is used for heating the evaporator, the inlet of the evaporator is connected with the kerosene return module, and the outlet thereof is connected to the transformer tank The kerosene vapor inlet is connected;

所述煤油返回模块主要包括粗过滤器，所述粗过滤器的入口与变压器煤油第一出口和煤油第二出口分别连通，其出口与蒸发器连通； The kerosene return module mainly comprises a coarse filter, the inlet of the coarse filter is respectively connected with the first outlet of the transformer kerosene and the second outlet of the kerosene, and the outlet thereof is connected with the evaporator;

所述冷却模块主耍包括水箱和冷水机组，并且所述各模块中的部件之间通过设置连接管道相互连通。 The cooling module mainly includes a water tank and a chiller, and components in the modules are connected to each other by providing a connecting pipe.

本发明采用了一个简易冷却模块，即由大、小冷水机组和一个水箱组成，可以分别向真空冷凝模块、煤油蒸气加热模块中的设备供应冷却水，解决了变压器安装现场缺水的问题，省略了固定式气相干燥***中较庞大的冷却水***（由于变压器制造工厂内部通常不存在水源的问题，因而采用传统的固定式气相干燥***，一般需要在厂房外修建一个 100m³— 300m³ 的水池，打一个深井，并在水池上安装一个冷却塔，用来自然冷却水）。由于本发明中采用冷却模块，其结构简单，占地位置小，大大节约了水资源，本发明进行千燥时几乎不需浪费水，而采用传统的固定式气相干燥***，则由于夏季室外温度高，必须靠放掉大量的水才能降低冷却水温，因而造成了水资源的浪费。 The invention adopts a simple cooling module, which is composed of a large and small chiller and a water tank, and can be separately The equipment in the air condensing module and the kerosene steam heating module supplies cooling water, which solves the problem of water shortage at the transformer installation site, omitting the larger cooling water system in the fixed gas phase drying system (since there is usually no water source inside the transformer manufacturing plant). The problem, therefore, the traditional fixed-type vapor phase drying system, generally need to build a 100m ³ - 300m ³ pool outside the plant, hit a deep well, and install a cooling tower on the pool for natural cooling water). Since the cooling module is adopted in the invention, the structure is simple, the occupied position is small, and the water resource is greatly saved. The invention has almost no need to waste water when drying, and the conventional fixed gas phase drying system is adopted due to the outdoor temperature in summer. High, it is necessary to rely on the release of a large amount of water to reduce the cooling water temperature, thus causing waste of water resources.

优选地，本发明采用的蒸发器为外置式单蒸发器，用于实现煤油蒸发和蒸馏，且导热油加热器利用电对导热油进行加热，进而导热油加热煤油，从而使液态煤油变成煤油蒸气。通过采用导热油加热煤油，使本发明的***不受安装环境的限制， BP，本发明的***不需要同传统固定式气相干燥处理方式一样设置充足的热源，就可实现气相干燥处理。 Preferably, the evaporator used in the present invention is an external single evaporator for realizing kerosene evaporation and distillation, and the heat transfer oil heater heats the heat transfer oil by electricity, and then the heat transfer oil heats the kerosene, thereby changing the liquid kerosene into kerosene. Vapor. By heating the kerosene with a heat transfer oil, the system of the present invention is not limited by the installation environment. BP, the system of the present invention does not require a sufficient heat source as in the conventional fixed vapor phase drying treatment to achieve a vapor phase drying treatment.

进一步地，本发明的***的连接管道采用可伸缩的管道，以用于补偿连接。从而，可根据安装现场的地形任意伸缩连接长度。 Further, the connecting pipe of the system of the present invention employs a retractable pipe for compensating the connection. Thus, the length of the connection can be arbitrarily expanded according to the terrain of the installation site.

优选地，在连接管道中，除连接冷却模块的连接管道采用带钢丝的塑料软管外，其余的连接管道均采用可伸缩的不锈钢软管。 Preferably, in the connecting pipe, except for the connecting pipe connecting the cooling module, a plastic hose with a steel wire is used, and the remaining connecting pipes are all made of a retractable stainless steel hose.

所述粗过滤器包括腔体，所述腔体上设有煤油入口和煤油出口，腔体中有过滤网，腔体上还设有能与外部真空***相连的外抽真空口。 The coarse filter comprises a cavity, the cavity is provided with a kerosene inlet and a kerosene outlet, the cavity has a filter mesh, and the cavity is further provided with an external vacuum port connected to the external vacuum system.

在对变压器进行干燥的过程中，通过外抽真空口连接外部真空***，所述外部真空*** 可通过外接真空口来控制变压器油箱与粗过滤器的腔体之间保持一定的压力差，从而达到加速整个气相干燥设备中的煤油进行循环的目的。使得千燥容积与所述粗过滤器之间不存在高度差的情况下也能实现煤油液体的快速循环，因而不需耍在地面挖坑以放置粗过滤器。 In the process of drying the transformer, an external vacuum system is connected through an external vacuum port, and the external vacuum system can control a certain pressure difference between the transformer tank and the cavity of the coarse filter through an external vacuum port, thereby achieving Accelerate the purpose of circulating kerosene in the entire gas phase drying equipment. The rapid circulation of the kerosene liquid can also be achieved without the difference in height between the dry volume and the coarse filter, so that it is not necessary to dig a pit on the ground to place a coarse filter.

优选的是，所述煤油入口设于腔体的侧壁上，与过滤网相对，这样就降低了煤油入口与过滤网之间的高度，从而可进一步降低变压器油箱与粗过滤器之间的高度差，实现煤油液体的快速循环。因而在变压器安装现场，即使不挖地坑也能保证气相干燥设备内部煤油液体的循环。 Preferably, the kerosene inlet is disposed on the side wall of the cavity opposite to the filter screen, thereby reducing the height between the kerosene inlet and the filter, thereby further reducing the height between the transformer tank and the coarse filter. Poor, achieve rapid circulation of kerosene liquid. Therefore, at the transformer installation site, even if the pit is not dug, the circulation of the kerosene liquid inside the vapor phase drying equipment can be ensured.

进一步地，腔体的侧壁上还设有第二煤油入口。所述煤油入口可与变压器油箱上的煤油第一出口连通，所述第二煤油入口可与变压器油箱上的煤油第二出口连通。其中煤油第一出口的口径较大，可利用煤油循环，但因其离变压器油箱底部有一定高度，不能将变压器油箱底部的煤油全部排出；煤油第二出口的口径较小，不能利用煤油循环，但能将变压器油箱内最底部的煤油放出。这样设计的目的可以保证在不改变变压器油箱结构的前提下，解决干燥过程中煤油的循环问题及干燥结束后变压器油箱内所有煤油的回收问题。 Further, a second kerosene inlet is further disposed on the sidewall of the cavity. The kerosene inlet may be in communication with a kerosene first outlet on a transformer tank, and the second kerosene inlet may be in communication with a kerosene second outlet on a transformer tank. The first outlet of kerosene has a larger diameter and can use kerosene circulation. However, because it has a certain height from the bottom of the transformer tank, it cannot discharge all the kerosene at the bottom of the transformer tank; the second outlet of kerosene has a small caliber and cannot use kerosene circulation. However, the kerosene at the bottom of the transformer tank can be released. The purpose of this design is to ensure that the drying is solved without changing the structure of the transformer tank. The problem of kerosene circulation in the process and the recovery of all kerosene in the transformer tank after drying.

优选的是，腔体向后延伸形成可容纳冷凝煤油液体的收集腔，所述外抽真空口设于收集腔所对应的腔体上。所述煤油出口设于收集腔的底部，收集腔的底部还可设有煤油输送泵，所述冷凝煤油液体经煤油输送泵后从煤油出口中流出。收集腔上还可设有能控制煤油输送泵启停的液位控制器。 Preferably, the cavity extends rearward to form a collection chamber for accommodating the condensed kerosene liquid, and the outer vacuum port is disposed on the corresponding cavity of the collection chamber. The kerosene outlet is arranged at the bottom of the collecting chamber, and the bottom of the collecting chamber may further be provided with a kerosene conveying pump, and the condensed kerosene liquid flows out from the kerosene outlet after passing through the kerosene conveying pump. A liquid level controller capable of controlling the start and stop of the kerosene pump can also be provided on the collection chamber.

由于本发明中，在变压器安装现场对变压器器身进行干燥，是以变压器油箱作为干燥容器，以代替真空罐。而变压器油箱内的工作空间有限，会直接影响煤油液体的循环。通过在腔体后部形成一个收集腔，可以收集并储存冷凝煤油液体。当冷凝煤油达到一定量后，液位控制器发出信号给煤油输送泵，由煤油输送泵将煤油液体送往气相干燥设备的其它元件，用来进行煤油的再次循环。因而解决了现有技术中煤油输送泵频繁启动的问题，延长了煤油输送泵的使用寿命，节约了能源，也保证了加热过程中煤油的循环使用。 Since the transformer body is dried at the transformer installation site in the present invention, the transformer tank is used as a drying container instead of the vacuum tank. The limited working space in the transformer tank will directly affect the circulation of kerosene liquid. The condensed kerosene liquid can be collected and stored by forming a collection chamber at the rear of the chamber. When the condensed kerosene reaches a certain amount, the liquid level controller sends a signal to the kerosene transfer pump, and the kerosene liquid is sent to the other components of the gas phase drying device by the kerosene transfer pump for recirculation of the kerosene. Therefore, the problem of frequent starting of the kerosene transfer pump in the prior art is solved, the service life of the kerosene delivery pump is prolonged, the energy is saved, and the recycling of the kerosene during the heating process is also ensured.

优选的是，所述过滤网设于腔体中部与煤油入口相对，过滤网将腔体分隔为腔体前段和腔体后段，所述腔体后段即为收集腔，所述腔体前段的底部还设有排污口，所述排污口能清除腔体中沉积下来的杂质，便于进行清洗。 Preferably, the filter mesh is disposed in a middle portion of the cavity opposite to the kerosene inlet, and the filter mesh divides the cavity into a front portion of the cavity and a rear portion of the cavity, and the rear portion of the cavity is a collection cavity, and the front portion of the cavity The bottom of the bottom is also provided with a sewage outlet, and the sewage outlet can remove impurities deposited in the cavity to facilitate cleaning.

优选的是，所述过滤网为带兜半圆柱状，这种结构可以使从腔体侧壁进入的煤油液体能顺利地流入过滤网中。 Preferably, the filter mesh is semi-cylindrical with a pocket, and the structure allows the kerosene liquid entering from the side wall of the cavity to smoothly flow into the filter.

优选的是，所述腔体外还覆盖有保温层，所述保温层可以对储存在腔体内的煤油液体进行保温，当所储存的煤油液体再次进入变压器油箱进行循环使用之前，可减少煤油在加热过程中的热损耗，起到节约能源的作用。 Preferably, the cavity is further covered with an insulation layer, and the insulation layer can heat the kerosene liquid stored in the cavity, and the kerosene liquid can be reduced during the heating process before the stored kerosene liquid enters the transformer tank again for recycling. The heat loss in the role of energy saving.

进一步地，腔体上还设有带充气阀的充气口（即解除真空口），充气阀用于开启或关闭所述充气口，充气口的前端带有弯头。当需要清洗过滤网时，充气阀打开，通过充气口解除腔体内的真空状况。将充气口的前端设置为弯头的形状可起到安全的作用，避免操作者在清洗过滤网时，因操作不当或者是因设备发生故障，当解除真空时，高温煤油液体从充气口中喷出伤及在场的工作人员。 Further, the cavity is further provided with an inflation port (i.e., a vacuum release port) with an inflation valve for opening or closing the inflation port, and the front end of the inflation port is provided with an elbow. When the filter needs to be cleaned, the inflation valve opens and the vacuum in the chamber is released through the inflation port. Setting the front end of the inflation port to the shape of the elbow can play a safety role, avoiding the operator's improper operation or malfunction due to equipment failure when cleaning the filter. When the vacuum is released, the high temperature kerosene liquid is ejected from the inflation port. Injury to the staff present.

更进一步，腔体顶部上与过滤网对应的位置处还设有一开口，所述开口由可开启的盖板密封，所述盖板上开有观察窗，通过所述观察窗，操作者随时可观看到过滤网中的渣物。 Further, an opening is formed at a position corresponding to the filter on the top of the cavity, and the opening is sealed by an openable cover plate, and the cover plate is provided with an observation window, and the operator can be at any time through the observation window. Watch the slag in the filter.

上述粗过滤器相对于现有技术中的粗过滤器而言，具有如下优点： 1 ) 不需动用土建工程，即在地面上挖地坑，大大降低了变压器的制作成本； 2 ) 因具有收集腔，煤油输送泵不需频繁启动，对粗过滤器起到了保护作用； 3 ) 在充气口前端有一弯管，在更换过滤网时可使操作变得更加安全； 4 ) 腔体外设有保温层，能减少干燥过程能量的损耗，最终降低变压器的制作成本。 Compared with the coarse filter in the prior art, the above coarse filter has the following advantages: 1) no need to use civil engineering, that is, digging a pit on the ground, which greatly reduces the manufacturing cost of the transformer; 2) Cavity, kerosene pump does not need to be started frequently, it protects the coarse filter; 3) There is a bend at the front end of the inflation port, which makes the operation safer when the filter is replaced; 4) The insulation layer is provided outside the cavity , can reduce the energy loss in the drying process, and ultimately reduce the pressure change The cost of making the device.

进一步地，变压器油箱设置有保温装置，其用于对变压器油箱进行保温。优选地，本发明的变压器油箱的保温装置设置在变压器外面的保温层，以及设置在所述变压器油箱底部和侧壁上的辅助加热装置。 Further, the transformer tank is provided with a heat insulating device for holding the transformer tank. Preferably, the heat insulating device of the transformer tank of the present invention is provided with an insulating layer outside the transformer, and an auxiliary heating device disposed on the bottom and side walls of the transformer tank.

其中，所述设置在变压器油箱侧壁上的辅助加热装置为加热用电加热带，设置在变压器油箱箱底的辅助加热装置为红外线加热板。 Wherein, the auxiliary heating device disposed on the side wall of the transformer tank is an electric heating belt for heating, and the auxiliary heating device disposed at the bottom of the transformer tank box is an infrared heating plate.

进一步地，在变压器油箱底部下面还设置有上表面为倾斜表面的底座，所述倾斜表面沿着变压器油箱的长度方向倾斜，使放置在其上的变压器油箱呈倾斜设置。由于采用了倾斜的底座，使其上的变压器油箱呈倾斜设置，从而有利于变压器油箱中的油顺畅地流出变压器油箱。 Further, a base having an upper surface as an inclined surface is disposed under the bottom of the transformer tank, and the inclined surface is inclined along the length direction of the transformer tank so that the transformer tank placed thereon is inclined. Thanks to the sloping base, the transformer tank on it is tilted, which helps the oil in the transformer tank to flow smoothly out of the transformer tank.

所述***还包括有采用计算机对整个***进行全自动控制的控制单元，所述的控制单元可实现对整个干燥过程的无人监控，控制单元可以监控***中各个元件所处的状态或设置参数的运行。 The system further includes a control unit that automatically controls the entire system by using a computer, the control unit can realize unattended monitoring of the entire drying process, and the control unit can monitor the state or setting parameters of each component in the system. Running.

针对本发明的发明构思，本发明还提供一种对现场组装变压器实现煤油气相干燥的方法，所述方法是将待千燥处理的变压器放置在变压器油箱内，利用连接管道将变压器油箱与设置在变压器油箱外部的气相干燥设备相连接，并采用煤油气相干燥处理方法对变压器油箱内的变压器进行干燥处理的方法。因此，由于采用本发明的方法，可将变压器油箱替代固定式气相干燥处理的真空罐，从而降低了设备成本，实现了在变压器安装现场对变压器进行气相干燥处理的目的。 In view of the inventive concept of the present invention, the present invention also provides a method for realizing gas phase drying of kerosene on a field assembled transformer, wherein the transformer to be dried is placed in a transformer tank, and the transformer tank is disposed in the connecting pipe. The gas phase drying equipment outside the transformer tank is connected, and the transformer in the transformer tank is dried by the kerosene vapor phase drying treatment method. Therefore, by adopting the method of the present invention, the transformer tank can be replaced by the vacuum tank of the fixed vapor phase drying process, thereby reducing the equipment cost and realizing the purpose of gas phase drying treatment of the transformer at the transformer installation site.

在本发明中，所述煤油气相干燥处理包括准备步骤、加热步骤、降压步骤、高真空步骤和解除真空步骤；其中，在解除真空步骤中，利用干燥空气发生器产生的干燥空气对变压器油箱解除真空。从而，保证变压器彻底进行干燥，并避免变压器二次受潮。 In the present invention, the kerosene vapor phase drying treatment comprises a preparation step, a heating step, a pressure reduction step, a high vacuum step and a vacuum removal step; wherein, in the vacuum removal step, the dry air generated by the dry air generator is used to the transformer tank Release the vacuum. Therefore, it is ensured that the transformer is thoroughly dried and the transformer is protected from secondary moisture.

为了能够保证经处理的变压器彻底千燥，本发明还包括综合判断变压器的最终含水量的方法，所采用的判断方法包括下述方面： In order to ensure that the treated transformer is completely dry, the present invention also includes a method for comprehensively determining the final moisture content of the transformer, and the method of judging includes the following aspects:

1) 变压器总干燥时间； 1) Total drying time of the transformer;

2 ) 变压器干燥结束平均温度； 2) The average temperature at which the transformer is dried;

3 ) 变压器干燥最终真空度； 3) The final vacuum of the transformer is dried;

4 ) 变压器干燥产品最终出水率；和 4) the final water output rate of the transformer dry product; and

5 ) 变压器干燥绝缘试块含水量测量。 5) Water content measurement of transformer dry insulation test block.

应当理解的是，对于发明，无论前面的概述还是下面的详细说明都是范例和说明性的，旨在对所主张的本发明提供说明，而非对本发明的保护范围进行限制。附图说明 It should be understood that the foregoing summary and the following detailed description are exemplary and illustrative, The invention is intended to be illustrative, and not to limit the scope of the invention. DRAWINGS

附图提供对本发明更进一步的理解，并入并组成本申请的一部分。本发明的具体实施例与说明书一起用以阐明本发明的构成特点。在附图中： The drawings provide a further understanding of the invention, which is incorporated in and constitute a part of this application. Specific embodiments of the present invention are used together with the specification to clarify the constitutional features of the present invention. In the drawing:

图 1示出了现有技术固定式煤油气相干燥处理***的原理图的示意图； 1 is a schematic view showing a schematic diagram of a prior art fixed kerosene vapor phase drying treatment system;

图 2示出了本发明的对变压器进行现场气相干燥处理的***的原理图的示意图；图 3示出了本发明的煤油气相干燥处理变压器的工艺流程图； 2 is a schematic view showing a schematic diagram of a system for performing on-site vapor phase drying treatment of a transformer of the present invention; FIG. 3 is a flow chart showing the process of the kerosene vapor phase drying processing transformer of the present invention;

图 4示出了本发明中粗过滤器的结构示意图。具体实施方式 Fig. 4 is a view showing the structure of the coarse filter of the present invention. detailed description

下面结合附图对本发明内容作进一步详细描述。 The content of the present invention will be further described in detail below with reference to the accompanying drawings.

为了解决如何在变压器组装现场实现对变压器进行干燥的问题，和解决固定式气相干燥处理***具有的构成复杂、成本高和受环境限制的问题，本发明提供了一种现场组装变压器实现煤油气相干燥的***和方法，其可不受环境的限制就可在变压器安装现场对变压器进行气相干燥处理。 In order to solve the problem of how to dry the transformer at the transformer assembly site, and to solve the problem of complex, high cost and environmental limitation of the fixed vapor phase drying treatment system, the present invention provides an on-site assembly transformer to realize kerosene vapor phase drying. The system and method for vapor phase drying of the transformer at the transformer installation site without environmental constraints.

为了实现本发明的目的，本发明采用以容置变压器的变压器油箱来替代固定式气相干燥 ***中的真空罐，并将气相干燥处理设备制成模块式，进而在将变压器运抵后，对***各组成部分进行组装连接，从而实现在变压器安装现场对变压器进行气相干燥处理。 In order to achieve the object of the present invention, the present invention adopts a transformer tank for accommodating a transformer to replace the vacuum tank in the stationary vapor phase drying system, and the gas phase drying processing device is made into a modular type, and after the transformer is delivered, the system is The components are assembled and connected to achieve vapor phase drying of the transformer at the transformer installation site.

为了更好地体现本发明的发明构思和本发明的特点，现对本发明的具体实施方式进行详细描述。 In order to better embody the inventive concept of the invention and the features of the invention, the embodiments of the invention are now described in detail.

图 2示出了本发明的对变压器进行现场气相干燥处理的***的原理图的示意图，图中单箭头为煤油蒸气走向，双箭头为蒸气回程，三箭头为煤油回程，而多个虚线方框表示为气相干燥设备的多个模块。图 2中， 11_变压器油箱， 12—真空口， 13—干燥空气入口， 14一煤油蒸气入口， 15—煤油第一出口， 16—煤油蒸气加热模块， 17—真空冷凝模块， 18—冷却模块， 19一煤油返回模块， 20—煤油第二出口， 21—辅助加热装置， 22—温度信号接入口， 23—底座， 24—蒸发器， 25—导热油加热器， 26—废油罐， 27—储油罐， 28—收集罐， 29— 冷凝器， 30—真空机组， 31—水箱， 32—冷水机组， 33—废水收集装置， 34—粗过滤器， 35— 控制装置， 36—气动装置。 Figure 2 is a schematic view showing the schematic diagram of the system for performing on-site vapor phase drying of the transformer of the present invention, wherein the single arrow is the kerosene vapor direction, the double arrow is the vapor return, the three arrows are the kerosene return, and the multiple dotted boxes Represented as multiple modules of a gas phase drying device. In Figure 2, 11_transformer tank, 12-vacuum port, 13-dry air inlet, 14-kerosene vapor inlet, 15-kerosene first outlet, 16-kerosene vapor heating module, 17-vacuum condensation module, 18-cooling module , 19 kerosene return module, 20 - kerosene second outlet, 21 - auxiliary heating device, 22 - temperature signal inlet, 23 - base, 24 - evaporator, 25 - heat transfer oil heater, 26 - waste oil tank, 27 - oil storage tank, 28 - collection tank, 29 - condenser, 30 - vacuum unit, 31 - water tank, 32 - chiller, 33 - waste water collection device, 34 - coarse filter, 35 - control device, 36 - pneumatic device .

参见图 2，本发明提供一种对变压器进行现场气相干燥处理的***，其包括：变压器油箱 11，其作为干燥处理的工作容器，将待干燥处理的变压器器身放置在变压器油箱 11内；气相干燥设备，其设置在变压器油箱 11外部；和用于连接变压器油箱 11和气相干燥设置的连接管道。在本发明的***中，将变压器油箱 11作为工作容器代替传统固定式气相干燥处理***中的真空罐。由于本发明中采用变压器油箱替代现有技术的固定式气相干燥*** 中的真空罐，省去了安装（包括基建安装工作）和制作真空罐的费用，从而使整个干燥处理***的设备成本和安装成本大大降低。实际生产中，通过将变压器油箱作为干燥处理变压器的工作容器，使整个干燥处理***的构成得到了简化，节约了固定式真空罐等设备投资成本约 200万元。 Referring to FIG. 2, the present invention provides a system for performing on-site vapor phase drying of a transformer, comprising: transformer oil a tank 11, which serves as a working container for drying, places the transformer body to be dried in the transformer tank 11; a vapor phase drying device which is disposed outside the transformer tank 11; and is used for connecting the transformer tank 11 and the vapor phase drying setting Connect the pipe. In the system of the present invention, the transformer tank 11 is used as a working vessel in place of the vacuum tank in a conventional stationary vapor phase drying treatment system. Since the transformer tank is used in the present invention to replace the vacuum tank in the prior art stationary vapor phase drying system, the installation (including the infrastructure installation work) and the cost of manufacturing the vacuum tank are eliminated, so that the equipment cost and installation of the entire drying treatment system are eliminated. The cost is greatly reduced. In actual production, by using the transformer tank as the working container of the drying treatment transformer, the composition of the entire drying treatment system is simplified, and the investment cost of the equipment such as the fixed vacuum tank is saved by about 2 million yuan.

为了保证变压器油箱 11的温度和密封性能，在变压器油箱 11上设置有用于对其进行密封的密封件，并在其外面包有保温层的同时，还在变压器油箱的底部和侧壁上装有辅助加热装置 21，当干燥完毕后只需将变压器油箱 11外的保温层和辅助加热装置 21拆除即可。 In order to ensure the temperature and sealing performance of the transformer tank 11, a seal for sealing the transformer tank 11 is provided, and a heat insulating layer is provided on the outside of the transformer tank 11, and an auxiliary is also provided on the bottom and side walls of the transformer tank. The heating device 21 only needs to remove the insulation layer outside the transformer tank 11 and the auxiliary heating device 21 after drying.

所述辅助加热装置 21包括两部分，一部分为设置在变压器油箱侧壁上的加热用电加热带，用电加热带给变压器油箱 11的侧壁加热；一部分为设置在变压器油箱箱底的红外线加热板，用红外线加热板对变压器油箱 11的底部加热。辅助加热装置 21用于在干燥过程加热阶段开始给变压器油箱 11加热保温一直到干燥结束。 The auxiliary heating device 21 comprises two parts, one part is a heating electric heating belt disposed on the side wall of the transformer oil tank, and is heated by the electric heating belt to the side wall of the transformer oil tank 11; a part is an infrared heating board disposed at the bottom of the transformer tank box The bottom of the transformer tank 11 is heated by an infrared heating plate. The auxiliary heating device 21 is used to heat the transformer tank 11 at the beginning of the drying process until the end of drying.

优选地，为了进一步保证变压器油箱能够对其内的变压器进行彻底地干燥处理，可对变压器油箱进行如下方面的强化和改进： 1 )提高变压器油箱本身的强度，使其在热态全真空下不发生永久性变形； 2 )提高变压器油箱上的所有密封件的可靠性，例如高耐煤油性、高耐温性；和 3 ) 在变压器油箱内设置煤油导向装置，以使进入变压器油箱内的煤油蒸气循环畅通。这些方面的改进和设置，均为了能够实现变压器油箱在高温状态下对其内的变压器进行彻底的干燥。 Preferably, in order to further ensure that the transformer tank can thoroughly dry the transformer therein, the transformer tank can be strengthened and improved as follows: 1) increase the strength of the transformer tank itself so that it does not under the full vacuum state. Permanent deformation occurs; 2) Improve the reliability of all seals on the transformer tank, such as high kerosene resistance and high temperature resistance; and 3) Install kerosene guides in the transformer tank to allow kerosene to enter the transformer tank The steam cycle is smooth. These improvements and settings are all capable of thoroughly drying the transformer tank at high temperatures.

为了让整个***的煤油循环畅通，在变压器油箱的底部还垫有一个一定高度的底座 23。通常，所述底座由具有高抗压强度的金属材料制成。在本实施例中，所述底座为钢底座。所述钢底座的上表面为倾斜表面，且所述倾斜表面沿着变压器的长度方向倾斜，使放置在钢底座上的变压器油箱呈倾斜设置。通过采用此设置，能够使变压器油箱的出油口处于低的位置，进而保证整个***的煤油循环畅通。 In order to make the kerosene circulation of the whole system unblocked, a base 23 of a certain height is also placed at the bottom of the transformer tank. Usually, the base is made of a metal material having a high compressive strength. In this embodiment, the base is a steel base. The upper surface of the steel base is an inclined surface, and the inclined surface is inclined along the length direction of the transformer, so that the transformer tank placed on the steel base is inclined. By adopting this setting, the oil outlet of the transformer tank can be placed at a low position, thereby ensuring the smooth circulation of the kerosene of the entire system.

本发明变压器油箱 11上还设置有用于与外部的上述气相干燥设备相连通的气路口和油路口。气路口包括煤油蒸气入口 14和真空口 12，煤油蒸气入口 14设置在变压器油箱侧面的中下部处，真空口 12设置在变压器油箱的顶部。 The transformer tank 11 of the present invention is further provided with a gas path port and an oil port for communicating with the external vapor phase drying device. The gas path includes a kerosene vapor inlet 14 and a vacuum port 12, the kerosene vapor inlet 14 is disposed at the lower middle portion of the side of the transformer tank, and the vacuum port 12 is disposed at the top of the transformer tank.

其中，煤油蒸气入口 14内设置有导向管（图 2中未示出），通过导向管煤油蒸气可达到变压器油箱的中底部，优选地，导向管上设置有支撑挡板（图 2中未示出），用于将流入导向管内的煤油蒸气进行分流，从而解决了煤油蒸气入口处变压器器身局部绝缘出现过热现象。 Wherein, the kerosene vapor inlet 14 is provided with a guiding tube (not shown in FIG. 2), and the kerosene vapor is accessible through the guiding tube To the middle bottom of the transformer tank, preferably, the guide pipe is provided with a support baffle (not shown in FIG. 2) for diverting the kerosene vapor flowing into the guide pipe, thereby solving the part of the transformer body at the kerosene vapor inlet. The insulation is overheated.

在与真空口相连接的真空管道上设置有干燥空气入口 13，其中，在燥空气入口 13处连接有干燥空气发生器（图 2中未示出）。 A dry air inlet 13 is provided on the vacuum line connected to the vacuum port, and a dry air generator (not shown in Fig. 2) is connected to the dry air inlet 13.

所述干燥空气发生器用于在达到变压器干燥结束条件后产生干燥空气，从而解除变压器油箱真空。该干燥空气发生器的设置解决了在固定式气相干燥处理中因釆用含水量较高的普通空气进行解除真空而使干燥好的变压器绝缘第二次受潮的问题，从而实现变压器彻底干燥。 The dry air generator is used to generate dry air after the transformer drying end condition is reached, thereby releasing the transformer tank vacuum. The arrangement of the dry air generator solves the problem that the dried transformer is insulated for the second time due to the vacuum being released by the normal air having a high water content in the stationary vapor phase drying process, thereby completely drying the transformer.

本发明的变压器油箱的油路口包括煤油第一出口 15和煤油第二出口 20。煤油第一出口 The oil passage of the transformer tank of the present invention includes a kerosene first outlet 15 and a kerosene second outlet 20. Kerosene first exit

15 设置在距离变压器油箱底部具有一定高度处的侧壁上，用于变压器油箱的主出油口。煤油第二出口 20设置在变压器油箱的底部，用于将变压器油箱中的油全部彻底地排放。 15 Set on the side wall at a certain height from the bottom of the transformer tank for the main oil outlet of the transformer tank. The kerosene second outlet 20 is placed at the bottom of the transformer tank and is used to completely drain all of the oil in the transformer tank.

一般情况下，在变压器油箱的煤油第一出口 15和煤油第二出口 20上分别安装有事故放油阀门和罐底放油阔门。虽然煤油第二出口 20的口径不是很大，但可利用煤油第二出口 20 将变压器油箱内的油全部排放干净；而煤油第一出口 15 的口径设置得比较大，但由于该出口与变压器油箱底部距离有一定的高度，所以变压器油箱 11内的油不能从该出口全部流出。在本***中，把煤油第一出口 15作为变压器油箱的主出油口。 In general, an accidental oil drain valve and a tank bottom oil drain door are respectively installed on the kerosene first outlet 15 and the kerosene second outlet 20 of the transformer tank. Although the diameter of the second outlet 20 of the kerosene is not very large, the second outlet 20 of the kerosene may be used to discharge all the oil in the transformer tank; and the diameter of the first outlet 15 of the kerosene is set relatively large, but due to the outlet and the transformer tank The bottom distance has a certain height, so the oil in the transformer tank 11 cannot flow out from the outlet. In this system, the first outlet 15 of kerosene is used as the main outlet of the transformer tank.

在本发明的气相千燥处理***中，对于放置在变压器油箱 11外面的气相干燥设备，采用模块式的结构，以便于运输和适应变压器安装现场地形的多样化。依照本发明的技术方案，可将气相干燥设备制成一个总成的模块化的构造，以简化整个气相干燥处理***构成和便于将***各部分进行组装，进而縮短了变压器进行气相干燥处理的周期。 In the gas phase drying system of the present invention, a vapor-phase drying apparatus placed outside the transformer tank 11 is of a modular structure to facilitate transportation and adapt to the diversification of the terrain of the transformer installation site. According to the technical solution of the present invention, the vapor phase drying device can be made into a modular structure of the assembly, which simplifies the entire vapor phase drying treatment system and facilitates assembly of various parts of the system, thereby shortening the cycle of the gas phase drying process of the transformer. .

优选地，本发明采用将外置的气相干燥设备分成多个模块。所述的多个模块包括真空冷凝模块 17、煤油蒸气加热模块 16、煤油返回模块 19、冷却模块 18、储油罐 27和废油罐 26，它们以模块组合的方式根据变压器安装现场的地形自由地放置。其中，冷却模块 18与真空冷凝模块 17、煤油蒸气加热模块 16分别连通，煤油蒸气加热模块 16与煤油返回模块 19、真空冷凝模块 17分别连通，所述变压器油箱 11与真空冷凝模块 17、煤油蒸气加热模块 16、煤油返回模块 19分别连通，储油罐 27与真空冷凝模块 17、煤油蒸气加热模块 16分别连通，废油罐 26与煤油蒸气加热模块 16连通。 Preferably, the present invention employs the division of an external vapor phase drying apparatus into a plurality of modules. The plurality of modules includes a vacuum condensation module 17, a kerosene vapor heating module 16, a kerosene return module 19, a cooling module 18, an oil storage tank 27, and a waste oil tank 26, which are combined in a modular manner according to the terrain of the transformer installation site. Placed on the ground. The cooling module 18 is connected to the vacuum condensing module 17 and the kerosene steam heating module 16, respectively, and the kerosene steam heating module 16 is connected to the kerosene return module 19 and the vacuum condensing module 17, respectively, the transformer tank 11 and the vacuum condensing module 17, kerosene vapor. The heating module 16 and the kerosene return module 19 are respectively connected, and the oil storage tank 27 communicates with the vacuum condensation module 17 and the kerosene vapor heating module 16, respectively, and the waste oil tank 26 communicates with the kerosene vapor heating module 16.

在本实施例中，为了便于运输和室外工作，可将真空冷凝模块 17、煤油蒸气加热模块 16、煤油返回模块 19、冷却模块 18制成集装箱结构，使用时只需打开集装箱上的门即可，大大节省了安装程序和安装时间。同时，由于气相干燥设备采用了上述的组合模块式，使整个***的安装和操作均变得简易且安全可靠，从而大大提高了工作效率。 In this embodiment, in order to facilitate transportation and outdoor work, the vacuum condensation module 17, the kerosene vapor heating module 16, the kerosene return module 19, and the cooling module 18 can be made into a container structure, and only the door on the container can be opened when in use. , Significant savings in installation and installation time. At the same time, since the gas phase drying equipment adopts the above-mentioned combined modular type, the installation and operation of the entire system are made simple, safe and reliable, thereby greatly improving work efficiency.

在本***中的连接管道中，除连接所述冷却模块的连接管道采用带钢丝的塑料软管外，其余的连接管道均采用可伸缩的不锈钢软管。也就是说，除了冷却设备的连接管道外，所有的真空管道和煤油管道全采用不锈钢材料，目的是防止铁锈进入煤油和变压器内，从而保证变压器质量。同时，采用不锈钢管道不仅可使***美观、轻巧，而且使气相干燥设备各模块之间位置放置更加灵活、方便。 In the connecting pipe in the system, except for the connecting pipe connecting the cooling module, a plastic hose with a steel wire is used, and the other connecting pipes are all made of a retractable stainless steel hose. That is to say, except for the connecting pipes of the cooling equipment, all the vacuum pipes and kerosene pipes are made of stainless steel, in order to prevent rust from entering the kerosene and the transformer, thereby ensuring the quality of the transformer. At the same time, the use of stainless steel pipes not only makes the system beautiful and light, but also makes the position between the modules of the gas phase drying equipment more flexible and convenient.

在本实施例中，真空冷凝模块 17主要包括真空机组 30、冷凝器 29和收集罐 28等，冷凝器 29的入口与变压器油箱 11上的真空口 12连通，其出口与真空机组 30、收集罐 28 分别连通；煤油蒸气加热模块 16主要包括蒸发器 24和导热油加热器 25等，导热油加热器 25用于对蒸发器 24进行加热，蒸发器 24的入口与所述煤油返回模块 19连通，其出口与变压器油箱上的煤油蒸气入口 14连通；煤油返回模块 19主要包括粗过滤器 34等，粗过滤器 34的入口与变压器煤油第一出口 15和煤油第二出口 20分别连通，其出口与蒸发器 24连通；冷却模块 18主要包括水箱 31和冷水机组 32，且所述各模块中的部件之间设置有连接管道。 In the present embodiment, the vacuum condensing module 17 mainly includes a vacuum unit 30, a condenser 29, a collecting tank 28, and the like. The inlet of the condenser 29 is connected to the vacuum port 12 on the transformer tank 11, and the outlet thereof is connected to the vacuum unit 30 and the collecting tank. 28 is connected separately; the kerosene vapor heating module 16 mainly comprises an evaporator 24 and a heat transfer oil heater 25, etc., the heat transfer oil heater 25 is used for heating the evaporator 24, and the inlet of the evaporator 24 is connected with the kerosene return module 19, The outlet thereof is in communication with the kerosene vapor inlet 14 on the transformer tank; the kerosene return module 19 mainly includes a coarse filter 34, etc., and the inlet of the coarse filter 34 is connected to the transformer kerosene first outlet 15 and the kerosene second outlet 20, respectively, and the outlet thereof is The evaporator 24 is connected; the cooling module 18 mainly includes a water tank 31 and a chiller unit 32, and a connecting pipe is disposed between the components in the modules.

另外，所述真空冷凝模块 17中还可包括有用于对整个***进行自动控制的控制装置 35。控制装置 35分别与煤油蒸气加热模块 16、煤油返回模块 19连通，并且与真空冷凝模块 17中的其他元件连通。 In addition, the vacuum condensing module 17 may further include a control device 35 for automatically controlling the entire system. The control unit 35 is in communication with the kerosene vapor heating module 16, the kerosene return module 19, and is in communication with other components in the vacuum condensing module 17.

所述控制装置 35采用计算机***，控制装置通过计算机来自动控制本发明干燥系统中所有元件所处的状态或设置参数的运行，实现自动运行、自动记录、自动监控等工作。 The control device 35 employs a computer system, and the control device automatically controls the operation of the state or setting parameters of all components in the drying system of the present invention through a computer to realize automatic operation, automatic recording, automatic monitoring and the like.

所述真空冷凝模块 17中还包括有用于对气动阀门进行驱动的气动装置 36。气动装置 36分别与煤油蒸气加热模块 16、煤油返回模块 19连通，并且与真空冷凝模块 17 中的其他元件连通（因为煤油蒸气加热模块 16、煤油返回模块 19和以及真空冷凝模块 17中都设有气动阀）。 Also included in the vacuum condensing module 17 is a pneumatic device 36 for driving a pneumatic valve. The pneumatic device 36 is in communication with the kerosene vapor heating module 16, the kerosene return module 19, and is in communication with other components in the vacuum condensing module 17 (because the kerosene vapor heating module 16, the kerosene return module 19, and the vacuum condensing module 17 are provided) Pneumatic valve).

本发明的煤油蒸气加热模块 16中的蒸发器 24为外置式单蒸发器，用于实现煤油蒸发和蒸馏。因安装现场不可能如制造厂中的干燥处理一样， BP，利用水蒸汽使煤油变成煤油蒸气的方式来干燥变压器，所以，在现场组装变压器的煤油气相干燥***中，设置了导热油加热器 25。导热油加热器 25结构简单，占地位置小，制造成本低，更为有利的是，由于采用水蒸汽供应***进行煤油加热容易腐蚀加热管，使得加热管生锈，导致蒸汽泄漏，增加生产成本和维修费用，因而本发明中采用导热油加热既避免了蒸汽加热不利一面，又解决了变压器现场的实际问题。 The evaporator 24 in the kerosene vapor heating module 16 of the present invention is an external single evaporator for kerosene evaporation and distillation. Because the installation site is not as dry as in the manufacturing plant, BP uses the steam to turn the kerosene into kerosene vapor to dry the transformer. Therefore, in the kerosene vapor phase drying system where the transformer is assembled on site, a heat transfer oil heater is installed. 25. The heat transfer oil heater 25 has a simple structure, a small occupied position, and a low manufacturing cost. More advantageously, the kerosene heating by the steam supply system easily corrodes the heating pipe, causing the heating pipe to rust and cause steam leakage. The production cost and the maintenance cost are increased. Therefore, the use of the heat transfer oil in the invention avoids the disadvantage of steam heating and solves the practical problems at the transformer site.

为了使本***适应变压器的安装现场的环境，本发明采用组合式冷却模块 18，所述冷却模块 18设置有冷水机组 32和水箱 31。通过该设置，解决了变压器安装现场没有水源的问题，同时还保证了***的冷却效果。由于采用上述结构，使本***的气相干燥处理*** 不受安装环境的限制，即不必有充足的水源和热源，就可实现气相干燥处理。 In order to adapt the system to the environment of the installation site of the transformer, the present invention employs a combined cooling module 18 provided with a chiller unit 32 and a water tank 31. Through this setting, the problem of no water source at the transformer installation site is solved, and the cooling effect of the system is also ensured. Due to the above structure, the vapor phase drying treatment system of the system is not limited by the installation environment, that is, the vapor phase drying treatment can be realized without having a sufficient water source and heat source.

本发明中，冷却模块 18的冷却水用于在加热过程中冷却煤油蒸汽加热模块 16中的高温油泵（高温油泵可有多个，有将导热油运送到蒸发器 24 的高温油泵，也有用于使蒸发器 24中的煤油循环的高温油泵）和真空冷凝模块 17的冷凝器 29。储油罐 27可以储存在干燥过程中使用的煤油。废油罐 26是在干燥处理带变压器油的变压器时，用于储存采用蒸馏方法分离出的变压器器身上的变压器油。 In the present invention, the cooling water of the cooling module 18 is used to cool the high temperature oil pump in the kerosene steam heating module 16 during heating (there may be a plurality of high temperature oil pumps, a high temperature oil pump for transporting the heat transfer oil to the evaporator 24, and also for A high temperature oil pump that circulates the kerosene in the evaporator 24 and a condenser 29 of the vacuum condensing module 17. The oil storage tank 27 can store the kerosene used in the drying process. The waste oil tank 26 is used to store the transformer oil on the transformer body separated by the distillation method when the transformer with transformer oil is dried.

煤油返回模块 19与煤油第一出口 15和煤油第二出口 20分别连接，所述煤油返回模块中包括粗过滤器 34。 The kerosene return module 19 is connected to the kerosene first outlet 15 and the kerosene second outlet 20, respectively, and the kerosene return module includes a coarse filter 34.

如图 4所示，粗过滤器包括腔体 323，所述腔体 323上设有煤油入口 322、煤油出口 319，腔体 323中还设有用于过滤煤油液体中渣物的过滤网 320，腔体 323上设有能与外部真空 ***相连的外抽真空口 315。所述煤油入口 322设于腔体 323的侧壁上，其位置与过滤网 320相对，所述煤油入口 322可与变压器油箱上的煤油第一出口 15连通。腔体 323的侧壁上还可设有第二煤油入口 310 , 所述第二煤油入口 310可与变压器油箱上的煤油第二出口 20连通。通过将腔体 323向后延伸可形成能容纳煤油液体的收集腔 314，所述外抽真空口 315设于收集腔 314所对应的腔体上。本实施例中，过滤网 320为带兜半圆柱状，通过过滤网 320将腔体 323分隔为腔体前段和腔体后段，所述腔体后段即为收集腔 314, 所述腔体前段的底部还可设有排污口 321。煤油出口 319设于收集腔 314的底部，收集腔 314的底部还设有煤油输送泵 318，所述煤油液体经煤油输送泵 318后从煤油出口 319中流出。收集腔 314上还设有可控制煤油输送泵 318启停的液位控制器 316。本实施例中，腔体 323 上设有带充气阀的充气口 311，所述充气口 311的前端带有弯头。在腔体 323顶部与过滤网 320对应的位置处设有一开口，所述开口由可开启的盖板 312密封，盖板 312上开有观察窗。腔体 323上还覆盖有保温层 317。 As shown in FIG. 4, the coarse filter includes a cavity 323. The cavity 323 is provided with a kerosene inlet 322 and a kerosene outlet 319. The cavity 323 is further provided with a filter 320 for filtering slag in the kerosene liquid. The body 323 is provided with an outer vacuum port 315 that can be connected to an external vacuum system. The kerosene inlet 322 is disposed on a sidewall of the cavity 323 opposite the filter screen 320, and the kerosene inlet 322 can be in communication with the kerosene first outlet 15 on the transformer tank. A second kerosene inlet 310 may also be provided in the side wall of the cavity 323, and the second kerosene inlet 310 may be in communication with the kerosene second outlet 20 on the transformer tank. A collection chamber 314 capable of containing a kerosene liquid is formed by extending the cavity 323 rearward, and the outer vacuum port 315 is disposed on a corresponding cavity of the collection chamber 314. In this embodiment, the filter net 320 is a semi-cylindrical shape with a pocket, and the cavity 323 is divided into a front portion of the cavity and a rear portion of the cavity through the filter net 320. The rear portion of the cavity is a collection chamber 314, and the front portion of the cavity A drain outlet 321 may also be provided at the bottom. The kerosene outlet 319 is disposed at the bottom of the collection chamber 314, and a kerosene delivery pump 318 is disposed at the bottom of the collection chamber 314. The kerosene liquid flows out of the kerosene outlet 319 via the kerosene delivery pump 318. A liquid level controller 316 is also provided on the collection chamber 314 for controlling the start and stop of the kerosene delivery pump 318. In this embodiment, the cavity 323 is provided with an inflation port 311 having an inflation valve, and the front end of the inflation port 311 is provided with an elbow. An opening is provided at a position corresponding to the filter net 320 at the top of the cavity 323, and the opening is sealed by an openable cover 312, and a viewing window is opened on the cover 312. The cavity 323 is also covered with an insulating layer 317.

下面是粗过滤器的具体操作过程进行说明。 The following is a description of the specific operation of the coarse filter.

当气相干燥设备在对变压器进行干燥处理时，加热后的煤油液体从变压器油箱的煤油第一出口 15或煤油第二出口 20中流出，并经腔体 323上的煤油入口 322或第二煤油入口 310 流入粗过滤器的腔体 323内，经过滤网 320过滤后的煤油液体再由煤油输送泵 318进行输送，并从煤油出口 319出来，送给气相干燥设备进行循环使用，经过滤后多余的煤油液体则继续储存在收集腔 314中。其中，液位控制器 316可以根据收集腔 314中的煤油量，控制煤油输送泵 318的启停时间。 When the vapor phase drying apparatus performs the drying treatment on the transformer, the heated kerosene liquid flows out from the kerosene first outlet 15 of the transformer tank or the kerosene second outlet 20, and passes through the kerosene inlet 322 or the second kerosene inlet on the cavity 323. 310 The kerosene liquid filtered into the cavity 323 of the coarse filter and filtered by the filter 320 is transported by the kerosene transfer pump 318, and is sent out from the kerosene outlet 319, and sent to the gas phase drying equipment for recycling, and the excess kerosene is filtered. The liquid continues to be stored in the collection chamber 314. The liquid level controller 316 can control the start and stop time of the kerosene delivery pump 318 according to the amount of kerosene in the collection chamber 314.

当操作者从盖板 312上的观察窗中査看到过滤网 320出现堵塞时，只需切断煤油液体流入本过滤装置的通路，通过操作充气阀以打开充气口 311，从而可解除腔体 323内的真空。待充气过程结束后，松开压紧螺丝 313，打开盖板 312，取出过滤网 320，对其进行清洗。待过滤网 320清洗完毕后，进行反向操作，重新对上述部件进行安装，恢复粗过滤器的运行。 When the operator sees that the filter 320 is clogged from the observation window on the cover 312, it is only necessary to cut off the passage of the kerosene liquid into the filtering device, and the inflation port 311 is opened by operating the inflation valve, thereby releasing the cavity 323. The vacuum inside. After the inflation process is completed, the compression screw 313 is loosened, the cover 312 is opened, the filter 320 is taken out, and it is cleaned. After the filter 320 is cleaned, reverse the operation and re-install the above components to resume the operation of the coarse filter.

本发明干燥***中，变压器油箱 11 的中下部还设有温度信号接入口 22，通过温度信号接入口 22可在变压器油箱中设置若干个温度传感器，各个温度传感器的测温探头可分别插放到变压器器身的不同部位上，所述各温度传感器通过输出线都与控制装置 35 相连，各温度传感器将所检测到的温度信号传输给控制装置 35，再由控制装置 35根据各温度传感器所提供的数据来控制整个干燥***的运行。 In the drying system of the present invention, a temperature signal inlet port 22 is further disposed in the middle and lower portions of the transformer oil tank 11, and a plurality of temperature sensors can be disposed in the transformer tank through the temperature signal inlet port 22, and the temperature probes of the respective temperature sensors can be respectively inserted into the temperature sensor. The temperature sensors are connected to the control device 35 through the output lines on different parts of the transformer body, and the temperature sensors transmit the detected temperature signals to the control device 35, and then the control device 35 provides the temperature sensors according to the temperature sensors. The data to control the operation of the entire drying system.

下面，为了更好地体现本发明***的特点和优点，结合本发明对变压器现场进行气相干燥处理的***的构成，将对变压器现场气相干燥处理***的安装工作过程进行描述，所述安装工作过程如下： In the following, in order to better embody the features and advantages of the system of the present invention, in conjunction with the composition of the system for performing gas phase drying treatment on the transformer field, the installation work process of the transformer on-site vapor phase drying processing system will be described. as follows:

1 ) 检査变压器油箱上的所有密封件，保证其耐高温、耐煤油； 1) Check all seals on the transformer tank to ensure high temperature and kerosene resistance;

2 ) 准备煤油及备用消耗材料，如泵油，过滤网等等；并按设备操作规程要求给储油罐 27和导热油加热器 25添加煤油和导热油。 2) Prepare kerosene and spare consumables such as pump oil, filter, etc.; add kerosene and heat transfer oil to the storage tank 27 and the heat transfer oil heater 25 as required by the equipment operating procedures.

3 ) 将变压器油箱吊起，并在其底部垫放预先准备好的底座，使变压器油箱长度方向保持有一定的斜度； 3) Lift the transformer tank and place a pre-prepared base on the bottom to keep the length of the transformer tank in a certain inclination;

4 ) 变压器器身装配完后，在变压器器身上插放温度传感器，然后将温度传感器与系统电气部分相连； 4) After the transformer body is assembled, insert a temperature sensor on the transformer body, and then connect the temperature sensor to the electrical part of the system;

5 ) 在变压器器身的下部通过人孔观察窗分别放置绝缘试块，用来干燥完成后检测绝缘试块的含水量，用于评估干燥过程的干燥效果； 5) In the lower part of the transformer body, an insulating test block is placed through the manhole observation window for detecting the water content of the insulating test piece after drying, for evaluating the drying effect of the drying process;

6 ) 在干燥设备之间、干燥设备与变压器油箱之间进行管道连接； 6) Pipe connection between drying equipment, drying equipment and transformer tank;

7 ) 开启***所有的电控装置； 7) Turn on all electronic control devices of the system;

8 )安装变压器油箱 11外包保温材料，并在变压器油箱 11底部安装辅助加热装置 21 ; 8) Install the transformer tank 11 outsource the insulation material and install the auxiliary heating device 21 at the bottom of the transformer tank 11;

9 ) 启动真空机组 30对变压器油箱进行抽真空，并测试变压器油箱泄漏率。在完成上述工作后，就可利用本发明的***对放置在变压器油箱中的变压器进行煤油气相干燥处理。 9) Start the vacuum unit 30 to evacuate the transformer tank and test the transformer tank leakage rate. After the above work is completed, the transformer placed in the transformer tank can be subjected to kerosene vapor drying treatment using the system of the present invention.

针对本发明的发明构思，本发明还提供一种对现场组装变压器实现煤油气相干燥的方法，所述方法是将待干燥处理的变压器放置在变压器油箱内，利用连接管道将变压器油箱与设置在变压器油箱外部的气相干燥设备相连接，并采用煤油气相干燥处理方法对变压器油箱内的变压器进行干燥处理的方法。因此，由于采用本发明的方法，可将变压器油箱替代固定式气相干燥***的真空罐，从而降低了设备成本，实现了在变压器安装现场对变压器进行气相干燥处理的目的。 In view of the inventive concept of the present invention, the present invention also provides a method for realizing gas phase drying of kerosene on a field assembled transformer, wherein the transformer to be dried is placed in a transformer tank, and the transformer tank is disposed in the transformer by using a connecting pipe. The gas phase drying equipment outside the fuel tank is connected, and the kerosene vapor phase drying treatment method is used to dry the transformer in the transformer tank. Therefore, by adopting the method of the present invention, the transformer tank can be substituted for the vacuum tank of the stationary vapor phase drying system, thereby reducing the equipment cost and realizing the purpose of vapor phase drying of the transformer at the transformer installation site.

本发明对变压器的干燥过程与固定式气相干燥过程大致相同，所述过程分为五个运行步骤，分别为：准备步骤、加热步骤、降压步骤、高真空步骤和解除真空步骤，下面，将参照附图 3 , 对上述步骤进行如下说明。 The drying process of the transformer of the present invention is substantially the same as the stationary gas phase drying process. The process is divided into five operation steps, namely: a preparation step, a heating step, a depressurization step, a high vacuum step and a vacuum removal step, below, The above steps will be described below with reference to FIG. 3.

第一步：准备步骤 R, 利用真空机组 30在室温下对变压器油箱 11抽真空； First step: preparation step R, using vacuum unit 30 to vacuum the transformer tank 11 at room temperature;

第二步：加热步骤 H, 使变压器油箱内的压力达到一定值，导热油加热器 25开始给蒸发器 24加热，在蒸发器 24中，将煤油加热变成煤油蒸汽，煤油蒸气通过管道进入到变压器油箱 11后，利用煤油蒸气放出的热量逐步加热变压器器身。一方面煤油蒸气遇到冷的变压器器身后，冷凝成液体，并从变压器油箱底部排出（煤油液体根据当时煤油的液位高低从煤油第一出口或煤油第二出口中自动流出），继而返回到蒸发器 24中，并在蒸发器 24中重新进行加热循环。另一方面随着变压器温度的升高，煤油蒸气不会完全冷凝而是在变压器油箱中形成聚积，但仍然以气体的形式存在。随着变压器油箱内的变压器器身温度慢慢升高，也就使变压器内的绝缘材料的温度慢慢上升，从而，绝缘材料中的水分也开始汽化，并以水蒸汽状态聚积在变压器油箱中，又加上可能有少量的空气漏进变压器油箱中，因此，此时变压器油箱中的气体为混合气体，同时，变压器油箱中压力也在逐渐升高。接下来，所述的混合气体通过真空口 12进入到冷凝器 29中进行冷凝。冷凝后的混合液体在收集罐 28中收集，因煤油和水因为比重不同，所以在收集罐 28中煤油和水经沉降被分离，其中的水被排出到废水收集装置 33中，而煤油液体被重新利用再次进入蒸发器 24形成第二个循环，而永久性气体则通过真空机组 30排到大气中。利用上述的两个循环，变压器器身逐步被加热。当加热到一定时间后，变压器油箱 11内的压力和蒸发器 24内压力会趋***衡，需要进行一次或几次中间降压，即中间降压步骤 IPL，即切断通往变压器油箱 11的煤油蒸气入口通道，所述的中间降压是利用真空冷凝模块 Π而实现降低变压器油箱的压力，来帮助煤油蒸气进入变压器油箱 11内。如果变压器的器身上带有变压器油，当蒸发器 24内的混合液体中变压器油的含量超过一定量（比如含量超过 10% )后，停止对变压器器身加热，对所述混合液体进行蒸熘过程，根据煤油和变压器油汽化压力不同，分离出煤油中的变压器油。这样煤油的纯度得到提高后，开始继续煤油加热变压器器身的过程。 The second step: heating step H, the pressure in the transformer tank reaches a certain value, the heat transfer oil heater 25 starts to heat the evaporator 24, in the evaporator 24, the kerosene is heated into kerosene steam, and the kerosene vapor enters through the pipeline. After the transformer tank 11, the heat released by the kerosene vapor is used to gradually heat the transformer body. On the one hand, after the kerosene vapor encounters the cold transformer body, it condenses into a liquid and is discharged from the bottom of the transformer tank (the kerosene liquid automatically flows out from the first outlet of kerosene or the second outlet of kerosene according to the level of kerosene at that time), and then returns to In the evaporator 24, the heating cycle is repeated in the evaporator 24. On the other hand, as the temperature of the transformer increases, the kerosene vapor does not completely condense but accumulates in the transformer tank, but still exists in the form of a gas. As the temperature of the transformer body in the transformer tank rises slowly, the temperature of the insulating material in the transformer gradually rises, so that the moisture in the insulating material begins to vaporize and accumulates in the transformer tank in the state of water vapor. In addition, a small amount of air may leak into the transformer tank. Therefore, the gas in the transformer tank is a mixed gas, and the pressure in the transformer tank is gradually increased. Next, the mixed gas enters the condenser 29 through the vacuum port 12 for condensation. The condensed mixed liquid is collected in the collecting tank 28. Since the kerosene and water are different in specific gravity, the kerosene and water are separated by sedimentation in the collecting tank 28, and the water therein is discharged to the wastewater collecting device 33, and the kerosene liquid is Re-use into the evaporator 24 again creates a second cycle, while the permanent gas is vented to the atmosphere by the vacuum unit 30. With the two cycles described above, the transformer body is gradually heated. When heated for a certain period of time, the pressure in the transformer tank 11 and the pressure in the evaporator 24 will approach equilibrium, and one or several intermediate pressure reductions, that is, the intermediate step-down step IPL, that is, the kerosene to the transformer tank 11 will be cut off. The vapor inlet passage, the intermediate pressure reduction is achieved by using a vacuum condensation module to reduce the pressure of the transformer tank to help the kerosene vapor enter the transformer tank 11. If there is transformer oil on the transformer body, when inside the evaporator 24 After the content of the transformer oil in the mixed liquid exceeds a certain amount (for example, the content exceeds 10%), the heating of the transformer body is stopped, and the mixed liquid is subjected to a steaming process, and the kerosene is separated according to the vaporization pressure of the kerosene and the transformer oil. Transformer oil. After the purity of the kerosene is increased, the process of heating the transformer body by the kerosene is continued.

第三步：降压步骤 P, 当变压器器身温度达到 120'C左右时，变压器绝缘材料内的大部分水分已经排除，则开始停止煤油液体往蒸发器中输送。利用真空机组 30 将变压器油箱 Step 3: Step-down step P. When the temperature of the transformer body reaches about 120'C, most of the moisture in the transformer insulation material has been removed, and then the kerosene liquid is stopped to be transported to the evaporator. Using the vacuum unit 30 to the transformer tank

11中的混合气体排出，使残留在绝缘材料中的煤油重新蒸发。 The mixed gas in 11 is discharged to re-evaporate the kerosene remaining in the insulating material.

第四步：高真空步骤 V, 进一步利用真空机组 30对变压器油箱 11进行高抽真空，使残留在绝缘材料中深层的煤油和水进一步蒸发，直到干燥结束。 Step 4: High vacuum step V, further vacuuming the transformer tank 11 with a vacuum unit 30 to further evaporate the deep kerosene and water remaining in the insulating material until the end of drying.

第五步：解除真空步骤，即充气 E的步骤。先打开干燥空气发生器，用干燥空气解除变压器油箱真空。 Step 5: The vacuum step is removed, that is, the step of inflating E. Turn on the dry air generator first and use the dry air to remove the transformer tank vacuum.

最后打开变压器油箱上的人口（没有接温度传感器的人口），取出绝缘试块，检测绝缘件的含水量，全过程结束。 Finally, open the population on the transformer tank (the population without the temperature sensor), take out the insulation test block, and check the water content of the insulation. The whole process is over.

如上所述，与固定式气相干燥处理相比，本发明的气相干燥处理流程与固定式气相干燥处理大致相同，但是，由于本发明的变压器气相干燥处理的干燥***的内环境发生了改变，同时对外部干燥设备进行了改进和调整，因而，使本发明处理干燥过程工艺的各控制参数发生很大变动。 As described above, the vapor phase drying treatment process of the present invention is substantially the same as the stationary vapor phase drying process as compared with the stationary vapor phase drying process, but the internal environment of the drying system of the transformer vapor phase drying process of the present invention is changed, The external drying equipment has been modified and adjusted so that the various control parameters of the process of the drying process of the present invention vary greatly.

为了说明本发明气相干燥处理流程的特点，现描述本发明的气相干燥处理流程与固定式气相干燥过程的主要不同点。所述主耍不同点在于： 1 )在本发明中，由于采用了变压器油箱作为工作容器，比固定式真空罐的容积小了很多，所以工艺步骤中耍求高真空时间耍短，真空度耍高； In order to illustrate the characteristics of the vapor phase drying process of the present invention, the main differences between the vapor phase drying process of the present invention and the stationary vapor phase drying process will now be described. The main difference is that: 1) In the present invention, since the transformer tank is used as the working container, the volume of the fixed vacuum tank is much smaller, so the high vacuum time is short in the process step, and the vacuum is used. High

2 ) 在本发明中，由于煤油蒸气的设备与变压器油箱设置距离很近，所以煤油输送管道也不如固定式真空罐所耍求的那样长，所以本发明在减少了煤油蒸气输送过程中能量损耗； 2) In the present invention, since the equipment of the kerosene vapor is placed close to the transformer tank, the kerosene delivery pipeline is not as long as the fixed vacuum tank, so the invention reduces the energy loss during the kerosene vapor transport process. ;

3 ) 在本发明中，在达到变压器干燥结束条件后，进行本发明的工艺流程中的解除真空步骤，即充气 E的步骤，在该步骤中，先打开带加热器的干燥空气发生器，用干燥空气，让干燥空气进入至变压器油箱中，以解除变压器油箱真空。此操作与固定式不同点在于：固定式气相干燥是采用普通空气进行解除真空，但由于普通空气中含水量较高，所以容易使干燥好的变压器绝缘第二次受潮。因此，本发明采用的方法中的解除真空步骤可避免千燥处理后的变压器再次受潮，从而保证了变压器的干燥质量。 3) In the present invention, after the transformer drying end condition is reached, the vacuum releasing step in the process flow of the present invention, that is, the step of inflating E, is performed, in which the dry air generator with the heater is first opened, Dry the air and let the dry air enter the transformer tank to relieve the transformer tank vacuum. This operation differs from the fixed type in that: Fixed vapor phase drying uses ordinary air to relieve the vacuum, but because of the high water content in ordinary air, it is easy to insulate the dry transformer for a second time. Therefore, the vacuum relieving step in the method employed by the present invention can prevent the transformer after the dry treatment from being wet again, thereby ensuring the dry quality of the transformer.

同时，为了判断进行干燥处理的变压器是否达到了干燥处理所需的质量耍求，采用以下方式进行判断：待变压器油箱内压力接近大气压时，打开变压器油箱上的人口，取下绝缘试块，检测绝缘件的含水量。在本发明中，设置绝缘试块是为了更好地判断变压器最终含水量。 At the same time, in order to judge whether the transformer subjected to the drying process has reached the quality required for the drying process, the following method is used for judging: When the pressure in the transformer tank is close to atmospheric pressure, the population on the transformer tank is opened, and the insulation is removed. Test block, detecting the moisture content of the insulation. In the present invention, the insulating test block is provided to better judge the final moisture content of the transformer.

除了通过检测绝缘试块的含水量来判断变压器的含水量外，综合判断变压器的最终含水量还需耍从以下方面进行判断：变压器总干燥时间；变压器干燥结束平均温度；变压器干燥最终真空度；变压器干燥最终出水率测量。 In addition to determining the water content of the transformer by detecting the water content of the insulation test block, comprehensive judgment of the final water content of the transformer is also judged from the following aspects: total drying time of the transformer; average temperature at the end of the transformer drying; final vacuum of the transformer drying; Transformer drying final water rate measurement.

综上所述，釆用本发明的***和方法除了达到上述的发明目的以外，还具有如下的优点： In summary, the system and method of the present invention have the following advantages in addition to the above object of the invention:

1 ) 能够缩短变压器的生产周期，与传统的现场干燥方法相比，干燥时间可缩短至少1) It can shorten the production cycle of the transformer, and the drying time can be shortened at least compared with the traditional on-site drying method.

1/2 , 从而提高了经济效益； 1/2, thereby improving economic efficiency;

2 ) 与传统的现场干燥方法相比，加热更均匀、干燥更彻底； 2) Compared with the traditional on-site drying method, the heating is more uniform and the drying is more thorough;

3 )与传统的现场干燥方法相比，由于煤油蒸气本身是最好的清洗剂，其能洗去检修时的变压器油，还能清除残存在变压器绝缘材料中的老化物质、杂质等，从而提高了变压器的洁净度； 3) Compared with the traditional on-site drying method, since kerosene vapor itself is the best cleaning agent, it can wash away the transformer oil during maintenance, and can also remove aging substances and impurities remaining in the transformer insulation material, thereby improving The cleanliness of the transformer;

4)与传统的现场干燥方法相比，由于本***的方法操作方便，自动化程度较高，所以降低了操作者的劳动强度。 4) Compared with the traditional on-site drying method, the method of the system is easy to operate and has a high degree of automation, thereby reducing the labor intensity of the operator.

5 )与固定气相千燥相比，由于采用变压器油箱作为工作容器，不需另外制作真空罐及土建费用，大大降低了干燥处理成本； 5) Compared with the fixed gas phase drying, the use of the transformer fuel tank as the working container does not require additional vacuum tanks and civil construction costs, which greatly reduces the drying treatment cost;

6 ) 与固定气相干燥相比，设备集中小巧，便于操作和监控； 6) Compared with fixed gas phase drying, the equipment is compact and easy to operate and monitor;

7 ) 与固定气相干燥相比，因是模块组合式结构，灵活性更强，适应性更广。不但在公司内部可以用来干燥处理变压器器身，在检修变压器和组装变压器时也可使用。 7) Compared with fixed gas phase drying, it is more flexible and more adaptable due to the modular structure of the module. It can be used not only in the company to dry the transformer body, but also in repairing transformers and assembling transformers.

因此，本发明所提供的***和方法，解决了在变压器组装现场对变压器进行气相干燥处理的问题，在提高变压器干燥处理的质量的情况下，简化了气相干燥处理***的构成，并使***各部分易于安装和运输。因为在不偏离本发明范围的情况下，能够进行各种修改和变化，因此上述说明中包括附图中所示出的所有技术特征或内容都应该理解为是说明性的而非限制性的。 Therefore, the system and method provided by the present invention solves the problem of vapor phase drying treatment of a transformer at a transformer assembly site, and simplifies the composition of the vapor phase drying treatment system while improving the quality of the transformer drying process, and Some are easy to install and transport. All the technical features or contents shown in the drawings are to be construed as illustrative and not restrictive.

Claims

权利要求书 Claim

1.一种对现场组装变压器实现煤油气相干燥的***，包括可容置变压器的工作容器和设置在所述工作容器外部的气相干燥设备，其特征在于，该***将容置变压器的变压器油箱（11)作为气相干燥处理的工作容器，并且所述变压器油箱（11) 利用连接管道与设置在其外部的所述气相干燥设备相连接。 A system for realizing kerosene vapor phase drying on a field assembled transformer, comprising a working container capable of accommodating a transformer and a vapor phase drying device disposed outside the working container, wherein the system is to house a transformer tank of the transformer ( 11) A working container as a vapor phase drying process, and the transformer tank (11) is connected to the vapor phase drying device disposed outside thereof by a connecting pipe.

2.根据权利要求 1 所述的***，其特征在于，所述变压器油箱（11) 上还设置有用于与所述气相干燥设备相连通的气路口、油路口和温度信号接入口（22) 。 The system according to claim 1, characterized in that the transformer tank (11) is further provided with a gas passage, an oil passage and a temperature signal inlet (22) for communicating with the vapor phase drying device.

3.根据权利耍求 2所述的***，其特征在于，所述的气路口包括煤油蒸气入口（14) 和真空口（12) ，所述煤油蒸气入口（14) 设置在变压器油箱侧面的中下部处，所述真空口（12) 设置在变压器油箱（11) 的顶部。 3. The system according to claim 2, wherein the gas path port comprises a kerosene vapor inlet (14) and a vacuum port (12), the kerosene vapor inlet (14) being disposed in a side of the transformer tank At the lower portion, the vacuum port (12) is placed at the top of the transformer tank (11).

4.根据权利耍求 3所述的***，其特征在于，所述煤油蒸气入口（14) 内设置有导向管，并在导向管上设置有支撑挡板，用于将流入导向管内的煤油蒸气进行分流，从而避免煤油蒸气入口（14) 处出现过热现象。 4. The system according to claim 3, wherein the kerosene vapor inlet (14) is provided with a guide tube, and the guide tube is provided with a support baffle for kerosene vapor flowing into the guide tube. The split is carried out to avoid overheating at the kerosene vapor inlet (14).

5.根据权利耍求 3 所述的***，其特征在于，与所述真空口相连接的真空管道上安装有干燥空气入口（13) ，其中，所述干燥空气入口（13) 连接有干燥空气发生器。 5. The system according to claim 3, characterized in that the vacuum duct connected to the vacuum port is provided with a dry air inlet (13), wherein the dry air inlet (13) is connected to dry air. Device.

6.根据权利要求 3 所述的***，其特征在于，所述油路口包括煤油第一出口 (15) 和煤油第二出口（20) ，其中所述煤油第一出口（15) 位于距离变压器油箱底部具有一定高度处的侧壁上，作为在气相干燥处理过程中变压器油箱的主出油口，所述煤油第二出口（20) 设置在变压器油箱的底部，用于将变压器油箱中的油全部排掉。 The system according to claim 3, wherein the oil passage comprises a kerosene first outlet (15) and a kerosene second outlet (20), wherein the kerosene first outlet (15) is located at a distance from the transformer tank The bottom side has a certain height on the side wall, as the main oil outlet of the transformer tank during the gas phase drying process, the kerosene second outlet (20) is arranged at the bottom of the transformer tank for all the oil in the transformer tank Dismissed.

7. 根据权利耍求 2所述的***，其特征在于，所述温度信号接入口（22) 设于变压器油箱的中下部，通过所述温度信号接入口（22) 可在变压器油箱中设置若千个温度传感器，所述若干个温度传感器分别插放变压器器身的不同部位上，气相干燥设备中包括有用于对***进行自动控制的控制装置，所述控制装置通过输出线与所述各温度传感器相连，各温度传感器将所检测到的温度信号传输给控制装置。'7. The system according to claim 2, wherein the temperature signal inlet (22) is provided in a middle and lower part of the transformer tank, and the temperature signal inlet (22) can be set in the transformer tank. a plurality of temperature sensors, wherein the plurality of temperature sensors are respectively inserted into different parts of the transformer body, and the gas phase drying device includes a control device for automatically controlling the system, and the control device passes the output line and the temperature The sensors are connected and each temperature sensor transmits the detected temperature signal to the control device. '

8.根据权利要求 7所述的***，其特征在于，所述气相干燥设备制成一个气相干燥设备总成模块。 8. The system of claim 7 wherein said vapor phase drying apparatus is formed as a gas phase drying equipment assembly module.

9.根据权利要求 6 所述的***，其特征在于，所述气相干燥设备制成多个模块，所述多个模块包括真空冷凝模块（17) 、煤油蒸气加热模块（16) 、煤油返回模块（19) 、冷却模块（18) ，所述多个模块之间通过连接管道进行连接，其中，冷却模块（18) 与真空冷凝模块（17) 、煤油蒸气加热模块（16) 分别连通，煤油蒸气加热模块（16) 与煤油返回模块（19) 、真空冷凝模块（17) 分别连通，所述变压器油箱（11) 与真空冷凝模块（17) 、煤油蒸气加热模块（16) 、煤油返回模块（19) 分别连通。 The system according to claim 6, wherein the vapor phase drying device is formed into a plurality of modules, and the plurality of modules comprises a vacuum condensation module (17), a kerosene vapor heating module (16), and a kerosene return module. (19), a cooling module (18), wherein the plurality of modules are connected by a connecting pipe, wherein the cooling module (18) is connected to the vacuum condensing module (17) and the kerosene steam heating module (16), respectively, and the kerosene vapor The heating module (16) is respectively connected with the kerosene return module (19) and the vacuum condensing module (17), the transformer tank (11) and the vacuum condensing module (17), the kerosene steam heating module (16), and the kerosene return module (19). ) Connected separately.

10.根据权利要求 9所述的***，其特征在亍，所述真空冷凝模块（17) 、煤油蒸气加热模块（16) 、煤油返回模块（19) 和冷却模块（18) 均采用集装箱结构。 10. The system of claim 9, wherein the vacuum condensing module (17), the kerosene vapor heating module (16), the kerosene return module (19), and the cooling module (18) each employ a container structure.

11.根据权利要求 9所述的***，其特征在于，所述气相干燥设备中还包括有储油罐（27) 和废油罐（26) ，所述储油罐（27) 和废油罐（26) 也制成模块式，储油罐（27) 与真空冷凝模块（17) 、煤油蒸气加热模块（16) 分别连通，废油罐 (26) 与煤油蒸气加热模块（16) 连通。 The system according to claim 9, wherein the vapor phase drying device further comprises an oil storage tank (27) and a waste oil tank (26), the oil storage tank (27) and a waste oil tank (26) Also made into a modular type, the oil storage tank (27) is connected to the vacuum condensation module (17) and the kerosene vapor heating module (16), respectively, and the waste oil tank (26) is connected to the kerosene vapor heating module (16).

12.根据权利要求 9所述的***，其特征在于， 12. The system of claim 9 wherein:

所述真空冷凝模块（17) 主要包括真空机组（30) 、冷凝器（29) 和收集罐 The vacuum condensing module (17) mainly comprises a vacuum unit (30), a condenser (29) and a collection tank

(28) , 所述冷凝器（29) 的入口与变压器油箱（11) 上的真空口（12) 连通，其出口与真空机组（30) 、收集罐（28) 分别连通； (28), the inlet of the condenser (29) is connected to the vacuum port (12) on the transformer tank (11), and the outlet thereof is connected to the vacuum unit (30) and the collection tank (28) respectively;

所述煤油蒸气加热模块（16) 主耍包括蒸发器（24) 和导热油加热器（25) ，所述导热油加热器（25) 用于对蒸发器（24) 进行加热，所述蒸发器（24) 的入口与所述煤油返回模块（19) 连通，其出口与变压器油箱上的煤油蒸气入口（14) 连通； The kerosene vapor heating module (16) mainly includes an evaporator (24) and a heat transfer oil heater (25) for heating the evaporator (24), the evaporator The inlet of (24) is connected to the kerosene return module (19), and the outlet is connected to the kerosene vapor inlet (14) on the transformer tank. Pass

所述煤油返回模块（19) 主要包括粗过滤器（34) ，所述粗过滤器的入口与变压器煤油第一出口（15) 和煤油第二出口（20) 分别连通，其出口与蒸发器（24) 连通； The kerosene return module (19) mainly comprises a coarse filter (34), the inlet of the coarse filter is respectively connected with a transformer kerosene first outlet (15) and a kerosene second outlet (20), and an outlet thereof and an evaporator ( 24) connected;

所述冷却模块（18) 主要包括水箱（31) 和冷水机组（32) ，并且所述各模块中的部件之间通过设置连接管道相互连通。 The cooling module (18) mainly includes a water tank (31) and a chiller unit (32), and components in the respective modules are connected to each other by providing a connecting pipe.

13.根据权利要求 12所述的***，其特征在于，所述蒸发器（24) 为外置式单蒸发器，用于实现煤油蒸发和蒸馏。 13. System according to claim 12, characterized in that the evaporator (24) is an external single evaporator for kerosene evaporation and distillation.

14.根据权利要求 12所述的***，其特征在于，所述连接管道采用可伸縮的管道，以用于补偿连接。 14. The system of claim 12, wherein the connecting conduit employs a retractable conduit for compensating for the connection.

15.根据权利要求 14所述的***，其特征在于，所述连接管道中，除连接所述冷却模块的连接管道釆用带钢丝的塑料软管外，其余的连接管道均釆用可伸缩的不锈钢软管。 The system according to claim 14, wherein in the connecting pipe, except for the connecting pipe connecting the cooling module, the connecting pipe is made of a plastic hose with a steel wire, and the remaining connecting pipes are all retractable. Stainless steel hose.

16. 根据权利要求 12所述的***，其特征在于，所述粗过滤器（34) 包括腔体（ 323) ，所述腔体（ 323)上设有煤油入口（ 322)和煤油出口（319)，腔体（323) 中有过滤网（320)，腔体（ 323)上还设有能与外部真空***相连的外抽真空口（315)。 16. The system according to claim 12, wherein the coarse filter (34) comprises a cavity (323), and the cavity (323) is provided with a kerosene inlet (322) and a kerosene outlet (319). There is a filter (320) in the cavity (323), and an external vacuum port (315) connected to the external vacuum system is also arranged on the cavity (323).

17. 根据权利要求 16所述的***，其特征在于，所述煤油入口（322) 设于腔体（ 323) 的侧壁上，腔体（323) 的侧壁上还设有第二煤油入口（310) 。 17. The system according to claim 16, wherein the kerosene inlet (322) is disposed on a sidewall of the cavity (323), and a second kerosene inlet is further disposed on a sidewall of the cavity (323). (310).

18. 根据权利耍求 17所述的***，其特征在于，所述煤油入口（322) 与变压器油箱上的煤油第一出口（15) 连通，所述第二煤油入口（310) 与变压器油箱上的煤油第二出口（20) 连通。 18. The system of claim 17, wherein the kerosene inlet (322) is in communication with a kerosene first outlet (15) on a transformer tank, the second kerosene inlet (310) and a transformer tank The kerosene second outlet (20) is connected.

19. 根据权利耍求 16所述的***，其特征在于，腔体（323) 向后延伸形成可容纳煤油液体的收集腔（314) ，所述外抽真空口（315) 设于收集腔（314) 所对应的腔体上。 19. The system of claim 16, wherein the cavity (323) extends rearward to form a collection chamber (314) that can hold a kerosene liquid, and the outer vacuum port (315) is disposed in the collection chamber ( 314) Corresponding to the cavity.

20. 根据权利要求 19所述的***，其特征在于，所述过滤网（320) 设于腔体中部与煤油入口（ 322) 相对，过滤网（320) 将腔体（ 323) 分隔为腔体前段和腔体后段，所述腔体后段即为收集腔（314)，腔体前段的底部还设有排污口（321) , 过滤网（320) 为带兜半圆柱状。 20. The system according to claim 19, wherein the filter mesh (320) is disposed in a middle portion of the cavity opposite to the kerosene inlet (322), and the filter mesh (320) separates the cavity (323) into a cavity In the front section and the rear section of the cavity, the rear section of the cavity is a collection chamber (314), and the bottom of the front section of the cavity is further provided with a sewage outlet (321), and the filter mesh (320) is a semi-cylindrical shape with a pocket.

21. 根据权利要求 19所述的***，其特征在于，所述煤油出口（319) 设于收集腔（314) 的底部，收集腔（314) 的底部还设有煤油输送泵（318) , 所述煤油液体经煤油输送泵（318) 后从煤油出口（319) 中流出，收集腔（314) 上还设有能控制煤油输送泵（318) 启停的液位控制器（316) 。 21. The system according to claim 19, wherein the kerosene outlet (319) is disposed at the bottom of the collection chamber (314), and the bottom of the collection chamber (314) is further provided with a kerosene delivery pump (318). The kerosene liquid flows out of the kerosene outlet (319) through the kerosene transfer pump (318), and the collection chamber (314) is further provided with a liquid level controller (316) capable of controlling the start and stop of the kerosene transfer pump (318).

22. 根据权利要求 16所述的***，其特征在于，所述腔体（323) 上覆盖有保温层（317) 。 22. System according to claim 16, characterized in that the cavity (323) is covered with an insulating layer (317).

23. 根据权利要求 16所述的***，其特征在于，腔体（323) 上设有带充气阀的充气口（311) , 所述充气口（311) 的前端带有弯头。 23. System according to claim 16, characterized in that the cavity (323) is provided with an inflation port (311) with an inflation valve, the front end of which has an elbow.

24. 根据权利要求 16所述的***，其特征在于，腔体顶部与过滤网（ 320) 对应的位置处设有一开口，所述开口由可开启的盖板（312) 密封，所述盖板（312) 上开有观察窗。 24. The system according to claim 16, wherein an opening is provided at a position corresponding to the filter screen (320) at the top of the cavity, and the opening is sealed by an openable cover plate (312), the cover plate (312) There is an observation window on the top.

25.根据权利要求 1-24之一所述的***，其特征在于，所述变压器油箱（11) 上还设置有保温装置，其用于对所述变压器油箱进行保温。 The system according to any one of claims 1 to 24, characterized in that the transformer tank (11) is further provided with a heat insulating device for holding the transformer tank.

26.根据权利要求 25所述的***，其特征在于，所述保温装置包括设置在变压器油箱外面的保温层，以及设置在所述变压器油箱底部和侧壁上的辅助加热装置The system according to claim 25, wherein the heat retaining device comprises an insulating layer disposed outside the transformer tank, and an auxiliary heating device disposed on the bottom and side walls of the transformer tank

(21) 。 (twenty one) .

27.根据权利耍求 26所述的***，其特征在于，所述设置在变压器油箱侧壁上的辅助加热装置（21 ) 为加热用电加热带，设置在变压器油箱箱底的辅助加热装置 ( 21 ) 为红外线加热板。 27. The system of claim 26, wherein said setting is on a side wall of a transformer tank The auxiliary heating device (21) is an electric heating belt for heating, and the auxiliary heating device (21) provided at the bottom of the transformer tank box is an infrared heating plate.

28.根据权利要求 26所述的***，其特征在于，在所述变压器油箱底部还设置有上表面为倾斜表面的底座（23 ) ，所述倾斜表面沿着变压器油箱的长度方向倾斜，使放置在其上的所述变压器油箱呈倾斜设置。 The system according to claim 26, further comprising a base (23) having an upper surface as an inclined surface at the bottom of the transformer tank, the inclined surface being inclined along a length direction of the transformer tank for placing The transformer tank above it is tilted.

29.根据权利要求 1一 24之一所述的***，其特征在于，所述***还包括有采用计算机对整个***进行全自动控制的控制单元，所述的控制单元可实现对整个干燥过程的无人监控，控制单元可以监控***中各个元件所处的状态或设置参数的运行。 The system according to any one of claims 1 to 24, wherein the system further comprises a control unit that automatically controls the entire system by using a computer, and the control unit can implement the entire drying process. Unsupervised, the control unit can monitor the status of the various components in the system or the operation of the set parameters.

30.—种对现场组装变压器实现煤油气相干燥的方法，其特征在于，.将待干燥处理的变压器放置在变压器油箱（11 ) 内，利用连接管道将变压器油箱（11 ) 与设置在变压器油箱外部的气相干燥设备相连接，并采用煤油气相干燥处理方法对变压器油箱内的变压器进行干燥处理。 30. A method for realizing kerosene vapor phase drying on a field assembled transformer, characterized in that: a transformer to be dried is placed in a transformer tank (11), and a transformer tank (11) is disposed outside the transformer tank by using a connecting pipe. The gas phase drying equipment is connected, and the transformer in the transformer tank is dried by using a kerosene vapor phase drying treatment method.

31.根据权利要求 30所述的方法，其特征在于，所述煤油气相干燥处理方法包括准备步骤、加热步骤、降压步骤、高真空步骤和解除真空步骤；其中，在所述解除真空步骤中，利用干燥空气发生器产生的干燥空气对变压器油箱解除真空。 The method according to claim 30, wherein the kerosene vapor phase drying treatment method comprises a preparation step, a heating step, a depressurization step, a high vacuum step, and a vacuum removal step; wherein, in the releasing the vacuum step The vacuum of the transformer tank is released by the dry air generated by the dry air generator.

32.根据权利耍求 31 所述的方法，其特征在于，为了能够保证经处理的变压器彻底干燥，还包括综合判断变压器的最终含水量的方法，所采用的判断方法包括下述方面： The method according to claim 31, characterized in that, in order to ensure that the processed transformer is completely dried, and further comprising a method of comprehensively determining the final moisture content of the transformer, the judging method employed includes the following aspects:

1) 变压器总干燥时间； 1) Total drying time of the transformer;

4 ) 变压器干燥产品最终出水率； 4) The final water output rate of the transformer dry product;