WO2015085568A1 - 压裂液输送软管及其制造方法及共挤模具 - Google Patents

压裂液输送软管及其制造方法及共挤模具 Download PDF

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Publication number
WO2015085568A1
WO2015085568A1 PCT/CN2013/089357 CN2013089357W WO2015085568A1 WO 2015085568 A1 WO2015085568 A1 WO 2015085568A1 CN 2013089357 W CN2013089357 W CN 2013089357W WO 2015085568 A1 WO2015085568 A1 WO 2015085568A1
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WO
WIPO (PCT)
Prior art keywords
layer
fracturing fluid
fluid delivery
rubber layer
delivery hose
Prior art date
Application number
PCT/CN2013/089357
Other languages
English (en)
French (fr)
Inventor
沙月华
王东辉
王金马
陈婷婷
周杉鸿
Original Assignee
五行材料科技（江苏）有限公司
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Publication date
Priority claimed from CN201310660994.5A external-priority patent/CN103612377B/zh
Priority claimed from CN201320804174.4U external-priority patent/CN203600577U/zh
Application filed by 五行材料科技（江苏）有限公司 filed Critical 五行材料科技（江苏）有限公司
Priority to US14/350,275 priority Critical patent/US20150159786A1/en
Publication of WO2015085568A1 publication Critical patent/WO2015085568A1/zh

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/16—Articles comprising two or more components, e.g. co-extruded layers
    • B29C48/18—Articles comprising two or more components, e.g. co-extruded layers the components being layers
    • B29C48/21—Articles comprising two or more components, e.g. co-extruded layers the components being layers the layers being joined at their surfaces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/07—Flat, e.g. panels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/30—Extrusion nozzles or dies
    • B29C48/32—Extrusion nozzles or dies with annular openings, e.g. for forming tubular articles
    • B29C48/335—Multiple annular extrusion nozzles in coaxial arrangement, e.g. for making multi-layered tubular articles
    • B29C48/336—Multiple annular extrusion nozzles in coaxial arrangement, e.g. for making multi-layered tubular articles the components merging one by one down streams in the die
    • B29C48/3366—Multiple annular extrusion nozzles in coaxial arrangement, e.g. for making multi-layered tubular articles the components merging one by one down streams in the die using a die with concentric parts, e.g. rings, cylinders
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/49—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using two or more extruders to feed one die or nozzle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/09—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L11/00—Hoses, i.e. flexible pipes
    • F16L11/04—Hoses, i.e. flexible pipes made of rubber or flexible plastics

Definitions

  • the present invention relates to the field of thermoplastic elastomers, and mainly relates to the field of manufacture of hoses and fire hoses thereof.
  • Hydraulic fracturing technology is the only method that can commercialize shale oil and gas.
  • the proppant in the high pressure liquid can maintain the crack, making it a high-speed penetration of oil and gas directional drilling. aisle.
  • Hydraulic fracturing for shale gas The fracturing fluid in the fracturing process consists mainly of water, sand and chemical additives (salts and some emulsifiers) with a water and sand content of over 99%.
  • the amount of fracturing fluid used to develop shale gas is extremely high.
  • Each shale gas well requires four to five million gallons (1 gallon or about 3.78 liters) of fracturing fluid to break the shale.
  • An object of the present invention is to provide a fracturing fluid delivery hose and a method of manufacturing the same according to the above problems.
  • the hose of the present invention has high strength, long length, large caliber, and high efficiency.
  • the hose has high pressure, large conveying flow, convenient connection, good weather resistance and chemical resistance, can adapt to different topography and landforms, is flat in non-use state, easy to wind up, and has small storage and transportation volume.
  • a method of manufacturing a fracturing fluid delivery hose comprising the steps of:
  • the reinforcing layer is placed on the core of the co-extrusion die, and the dried pellets in the step (1) and the step (2) are respectively sucked into the two extruders to start the extruder. And the tractor makes the reinforcing layer, the outer rubber layer and the inner rubber layer together to obtain the product through the co-extrusion device.
  • the outer rubber layer pellets described in the step (1) are made of TPU pellets or TPU and PVC alloy, and the inner rubber layer material described in the step (2)
  • the extrusion operation temperature described in the step (4) is 150-210 °C.
  • the reinforcing layer described in the step (3) is woven into a tubular shape by warp and weft, and the warp or weft is made of polyester filament and/or nylon filament and/or Or aramid.
  • a fracturing fluid delivery hose manufactured by the above method, the hose comprising: an outer rubber layer, a reinforcing layer, an inner rubber layer, the outer rubber layer having a thickness of 0.5-4.0 mm, said increase The thickness of the inner layer of the rubber layer is 0. 5-4. 0 ⁇ , the outer rubber layer and the inner rubber layer are co-extruded to the reinforcement by a co-extrusion device. Obtained on the layer.
  • the reinforcing layer is woven into a tube shape by warp and weft.
  • the reinforcing layer uniformly prepares the copper wire in the axial direction to have an antistatic effect.
  • the co-extrusion device includes a mounting bracket, and the mounting bracket has an intermediate mounting derrick, and the two ends of the mounting bracket are respectively installed with an inner layer extruder and an outer portion
  • the layer extruder the lower part of the derrick is provided with an extrusion die, and the inner layer extruder and the outer layer extruder are respectively connected to an extrusion die, and the extrusion die is connected to the tractor.
  • the co-extrusion device for manufacturing the fracturing fluid delivery hose comprises a core for a sheath reinforcing layer, the core is sleeved with a positioning ring, and the positioning ring is The middle portion has a set of long through holes, the positioning ring is externally sleeved with a mold root, the outer portion of the mold root is provided with an inner cavity sleeve, and an inner layer flow passage is formed between the mold root and the inner cavity sleeve
  • the inner layer flow passage communicates with the long through hole and the inner layer extruder, and the inner cavity sleeve is externally provided with an outer cavity sleeve, the inner cavity sleeve and the outer cavity
  • An outer flow passage is formed between the sleeves, and the outer flow passage communicates with the outer layer extruder.
  • the fracturing fluid delivery hose of the present invention which comprises: an outer rubber layer, The reinforcing layer and the inner rubber layer, wherein the outer rubber layer and the inner rubber layer can be designed with different materials, the inner rubber layer can be searched for chemical resistant medium and oil corrosion material, and the outer rubber layer can be found for weather resistance and ozone resistance, wear resistance and resistance. Pierced material, the greatest advantage of a variety of materials.
  • the length of the product produced by the invention can be arbitrarily long, the size of each part of the hose is uniform, especially the elongation of the product is small, and the product stability is good when the medium is conveyed.
  • the hose produced by the method of the present invention is lightweight, flexible, abrasion resistant, corrosion resistant, weather resistant, and the hose can be connected by a variety of standard fasteners for easy winding, easy assembly and disassembly.
  • the patented hose is a turn-over process.
  • the length of the product can be arbitrarily long.
  • the inner diameter is 200mm (8, 8, ), 250mm (10"), 300mm (12"), 400 ⁇ (16,), 600 ⁇ (24). " ) and other specifications.
  • the invention designs a special co-extrusion device, which is easy to operate and high in efficiency.
  • Figure 1 is a schematic view showing the structure of a co-extrusion apparatus of the present invention.
  • Figure 2 is a K-direction diagram of Figure 1.
  • Fig. 3 is an enlarged view of a portion A in Fig. 2.
  • a method of manufacturing a fracturing fluid delivery hose comprising the steps of:
  • the reinforcing layer is placed on the core of the co-extrusion die, and the dried pellets in the step (1) and the step (2) are respectively sucked into the two extruders to start the extruder. And the tractor makes the reinforcing layer, the outer rubber layer and the inner rubber layer together to obtain the product through the co-extrusion device.
  • the outer rubber layer pellets described in the step (1) are made of TPU pellets or TPU and PVC alloy, and the inner rubber layer material described in the step (2)
  • the extrusion operation temperature described in the step (4) is 150-210 °C.
  • the reinforcing layer described in the step (3) is woven into a tubular shape by warp and weft, and the warp or weft is made of polyester filament and/or nylon filament and/or Or aramid.
  • a fracturing fluid delivery hose manufactured by the above method, the hose comprising: an outer rubber layer, a reinforcing layer, an inner rubber layer, the outer rubber layer having a thickness of 0.5-4.0 mm, said reinforcement
  • the layer thickness is 1.5-5.0 ⁇
  • the inner rubber layer has a thickness of 0.5-4.0 ⁇
  • the outer rubber layer and the inner rubber layer are co-extruded onto the reinforcing layer by a co-extrusion device.
  • the fracturing fluid delivery hose, the reinforcing layer is woven into a tube by warp and weft Shape.
  • the fracturing fluid conveying hose, the reinforcing layer uniformly prepares the copper wire in the axial direction to have an antistatic effect.
  • the present invention also provides a co-extrusion apparatus for manufacturing the above-mentioned fracturing fluid delivery hose:
  • the co-extrusion apparatus includes a mounting bracket 1 on which an intermediate mounting derrick 2 is disposed, and the two ends of the mounting bracket are respectively Installing an inner layer extruder 3 and an outer layer extruder 4, wherein the lower portion of the derrick is provided with an extrusion die, and the inner layer extruder and the outer layer extruder are respectively connected to an extrusion die.
  • the extrusion die described is connected to the tractor 5.
  • the co-extrusion device for the manufacture of the fracturing fluid delivery hose comprises a core 7 for the sheath reinforcing layer 6, and the core is sleeved with a positioning ring 8
  • the middle of the positioning ring has a set of long through holes 9, the positioning ring is externally sleeved with a root 10, and the outer portion of the root is provided with an inner sleeve 11, the root and the inner sleeve Forming an inner layer flow channel 12, the inner layer flow channel is connected to the long through hole and the inner layer extruder, and the outer cavity sleeve is externally provided with an outer cavity sleeve 13
  • An outer flow passage 14 is formed between the sleeve and the outer sleeve, and the outer flow passage communicates with the outer layer extruder.
  • the reinforcing layer is placed on the core of the co-extrusion die, and the dried pellets in the steps (1) and (2) are respectively sucked into the two extruders, and the extruder and the tractor are started.
  • Glue When the layer enters the position of the rectangular hole of the positioning ring along the inner channel, the gap between the lower inner sleeve and the positioning ring is equal to the thickness of the reinforcing layer due to the pressure of the extruder, and the inner rubber is pressed.
  • the layer penetrates into the inside of the reinforcing layer, flows down along the gap between the positioning ring and the core, and is finally extruded on the inner side of the reinforcing layer, and the outer rubber layer flows directly from the outer pressing machine and flows along the outer layer.
  • the road flows down and is finally squeezed outside the reinforcement layer.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Rigid Pipes And Flexible Pipes (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)

Abstract

一种压裂液输送软管的制造方法，包括如下步骤：（a）外胶层的干燥、搅拌、配色；（b）内胶层的干燥、搅拌、配色；（c）编织增强层；（d）将增强层穿在共挤模具的模芯上，将步骤（a）和（b）中干燥好的粒料分别吸入两台挤出机中，启动挤出机和牵引机（5）使得增强层、外胶层料、内胶层料共同通过共挤设备得出产品。一种用于制造压裂液输送管的共挤设备以及一种压裂液输送管。上述方法和设备制造的压裂液输送管外胶层和内胶层使用不同材料，可适应不同需求。软管尺寸稳定，延伸率低。

Description

压裂液输送软管及其制造方法及共挤模具 技术领域- 本发明涉及热塑性弹性体领域，主要涉及到软管及其消防水带的 制造领域。
背景技术：
水力压裂技术， 是目前惟一可以商业化开采页岩油气的方法， 当 高压液体注入钻井并使岩层裂开后，高压液体中的支撑剂可以保持住 裂缝， 使其成为油气导向钻井的高速渗透通道。开采页岩气所用水力 压裂法中的压裂液主要由水、砂和化学添加剂（盐和一些乳化剂）组 成， 水和砂含量 99%以上。 开发页岩气用压裂液量极大， 每口页岩气 井需耗费四、 五百万加仑 （1加仑约合 3. 78升） 的压裂液才能使页 岩断裂。
目前页岩油气开采中长距离 （约 10英里） 输送常用金属管道， 此种方法的缺点是铺设工作量大， 在地形复杂的地段如斜坡， 沟壑， 水塘等铺设比较困难，更主要的是在管道连接处易产生裂缝导致水的 渗漏造成土壤污染。 并且废水中的有毒盐水浓度是海水浓度的 6倍， 对环保影响大。
发明内容- 本发明的目的是针对上述存在的问题提供一种压裂液输送软管 及其制造方法， 本发明的软管强度大， 长度长， 口径大， 效率高。 而 且软管承压高， 输送流量大， 连接方便， 耐候性耐化学性好， 能适应 不同地形地貌，在非使用状态时呈扁平状，易收卷，贮藏运输体积小。 上述的目的通过以下的技术方案实现：
压裂液输送软管的制造方法， 该方法包括如下歩骤：
(1) 外胶层的干燥搅拌配色： 把外胶层粒料和色母粒料按 100: (0-1.5) 的比例放在一台搅拌机搅拌然后吸入烘干机中在温度为
70-110°C下进行干燥 1-6小时；
(2) 内胶层的干燥搅拌配色： 把内胶层粒料和色母粒料按比例 放在一台搅拌机搅拌然后吸入烘干机中在温度为 70-11CTC下进行干 燥 1-6小时；
(3) 制作增强层： 按产品设计规格参数编织管状增强层；
(4) 成品制作： 把增强层穿在共挤模具的模芯上， 把歩骤 （1) 和歩骤 （2) 中干燥好的粒料分别吸入两台挤出机中， 启动挤出机和 牵引机使得增强层、外胶层料、内胶层料共同通过共挤设备得出产品。
所述的压裂液输送软管的制造方法， 歩骤 （1) 中所述的外胶层 粒料采用 TPU粒料或者 TPU与 PVC合金， 歩骤 （2) 中所述的内胶层 料粒采用 TPU粒料或者 TPU/PVC合金或者 PVC或者 PVC/丁晴， 所述 的 TPU与 PVC合金中 TPU:PVC=100: 0-70； 所述的 PVC/丁晴中 PVC: 丁晴 =100: 0-70； 歩骤 （4) 中所述的挤出操作温度在 150_210°C。
所述的压裂液输送软管的制造方法， 歩骤 （3) 中所述的增强层 采用经线和纬线编织成管状， 所述的经线或者纬线采用涤纶长丝和 / 或尼龙长丝和 /或芳纶。
用上述方法制造的压裂液输送软管， 该软管按由外到里包括： 外 胶层、 增强层、 内胶层， 所述的外胶层厚度为 0.5-4.0mm，所述的增 强层厚度 1. 5-5. 0匪， 所述的内胶层厚度为 0. 5-4. 0匪， 所述的外胶 层和内胶层通过共挤设备共挤到所述的增强层上得到。
所述的压裂液输送软管， 所述的增强层由经线和纬线编织成管 状。
所述的压裂液输送软管，所述的增强层沿轴向均匀编制铜丝起抗 静电作用。
用于上述压裂液输送软管制作的共挤设备：该共挤设备包括安装 支架， 所述的安装支架上中间安装井架， 所述的安装支架的两端分别 安装内层挤出机和外层挤出机， 所述的井架下部安装挤出模具， 所述 的内层挤出机和所述的外层挤出机分别与挤出模具连接，所述的挤出 模具连接牵引机。
所述的用于上述压裂液输送软管制作的共挤设备，所述的挤出模 具包括用于套装增强层的模芯， 所述的模芯外面套有定位环， 所述的 定位环中部具有一组长通孔， 所述的定位环外部套有模根， 所述的模 根外部设置有内腔套， 所述的模根和所述的内腔套之间形成内层流 道， 所述的内层流道连通所述的长通孔和所述的内层挤出机， 所述的 内腔套外部设置有外腔套，所述的内腔套和所述的外腔套之间形成外 层流道， 所述的外层流道连通所述的外层挤出机。
所述的用于上述压裂液输送软管制作的共挤设备，所述的定位环 与所述的内腔套之间的间隙等于增强层的厚度。
有益效果：
1.本发明的压裂液输送软管， 该软管按由外到里包括： 外胶层、 增强层、 内胶层， 其中外胶层和内胶层可以设计不同的材料， 内胶层 可以寻找耐化学介质和油类腐蚀的材质，外胶层可以寻找耐候和耐臭 氧及耐磨和耐刺穿的材质， 发挥各种材料的最大优点。本发明制作的 产品长度可以任意长，软管各部分尺寸均匀，尤其产品的延伸率很小， 在传送介质时候产品稳定性好。
2. 本发明的方法生产的软管具有重量轻、 柔软性好、 耐磨、 耐 腐蚀、 耐候性好而且软管可通过多种标准接扣连接， 易卷绕、 易组装 和拆卸。本专利软管是翻带法生产工艺， 产品长度可以任意长， 内径 为 200mm( 8，， ), 250mm( 10" ), 300mm( 12 " )，400匪（ 16，， ），600匪（24" ) 等不同规格。
3.本发明设计了专门的共挤设备， 操作容易， 效率高。
附图说明- 图 1是本发明的共挤设备的结构示意图。
图 2是图 1的 K向图。
图 3是图 2中的 A部放大图。
图中： 1、 安装支架； 2、 井架； 3、 内层挤出机； 4、 外层挤出机； 5、 牵引机； 6、 增强层； 7、 模芯； 8、 定位环； 9、 长通孔； 10、 模 根； 11、 内腔套； 12、 内层流道； 13、 外腔套； 14、 外层流道。
具体实施方式- 实施例 1 :
压裂液输送软管的制造方法， 该方法包括如下歩骤：
( 1 ) 外胶层的干燥搅拌配色： 把外胶层粒料和色母粒料按 100: (0-1.5) 的比例放在一台搅拌机搅拌然后吸入烘干机中在温度为 70-110°C下进行干燥 1-6小时；
(2) 内胶层的干燥搅拌配色： 把内胶层粒料和色母粒料按比例 放在一台搅拌机搅拌然后吸入烘干机中在温度为 70-11CTC下进行干 燥 1-6小时；
(3) 制作增强层： 按产品设计规格参数编织管状增强层；
(4) 成品制作： 把增强层穿在共挤模具的模芯上， 把歩骤 （1) 和歩骤 （2) 中干燥好的粒料分别吸入两台挤出机中， 启动挤出机和 牵引机使得增强层、外胶层料、内胶层料共同通过共挤设备得出产品。
所述的压裂液输送软管的制造方法， 歩骤 （1) 中所述的外胶层 粒料采用 TPU粒料或者 TPU与 PVC合金， 歩骤 （2) 中所述的内胶层 料粒采用 TPU粒料或者 TPU/PVC合金或者 PVC或者 PVC/丁晴， 所述 的 TPU与 PVC合金中 TPU:PVC=100: 0-70； 所述的 PVC/丁晴中 PVC: 丁晴 =100: 0-70； 歩骤 （4) 中所述的挤出操作温度在 150_210°C。
所述的压裂液输送软管的制造方法， 歩骤 （3) 中所述的增强层 采用经线和纬线编织成管状， 所述的经线或者纬线采用涤纶长丝和 / 或尼龙长丝和 /或芳纶。
用上述方法制造的压裂液输送软管， 该软管按由外到里包括： 外 胶层、 增强层、 内胶层， 所述的外胶层厚度为 0.5-4.0mm，所述的增 强层厚度 1.5-5.0匪， 所述的内胶层厚度为 0.5-4.0匪， 所述的外胶 层和内胶层通过共挤设备共挤到所述的增强层上得到。
所述的压裂液输送软管， 所述的增强层由经线和纬线编织成管 状。
实施例 2:
本实施例与实施例 1的不同之处在于： 所述的压裂液输送软管， 所述的增强层沿轴向均匀编制铜丝起抗静电作用。
实施例 3:
本发明还提供一种用于上述压裂液输送软管制作的共挤设备：该 共挤设备包括安装支架 1， 所述的安装支架上中间安装井架 2， 所述 的安装支架的两端分别安装内层挤出机 3和外层挤出机 4， 所述的井 架下部安装挤出模具，所述的内层挤出机和所述的外层挤出机分别与 挤出模具连接， 所述的挤出模具连接牵引机 5。
所述的用于上述压裂液输送软管制作的共挤设备，所述的挤出模 具包括用于套装增强层 6的模芯 7， 所述的模芯外面套有定位环 8， 所述的定位环中部具有一组长通孔 9， 所述的定位环外部套有模根 10， 所述的模根外部设置有内腔套 11， 所述的模根和所述的内腔套 之间形成内层流道 12， 所述的内层流道连通所述的长通孔和所述的 内层挤出机， 所述的内腔套外部设置有外腔套 13， 所述的内腔套和 所述的外腔套之间形成外层流道 14， 所述的外层流道连通所述的外 层挤出机。
所述的用于上述压裂液输送软管制作的共挤设备，所述的定位环 与所述的内腔套之间的间隙等于增强层的厚度。
生产时增强层穿在共挤模具的模芯上， 把歩骤 （1 ) 和歩骤 （2 ) 中干燥好的粒料分别吸入两台挤出机中， 启动挤出机和牵引机， 内胶 层顺着内层流道进入到定位环的长方孔位置时，由于上面受到挤出机 压力的作用， 下面内腔套和定位环的间隙等于增强层的厚度， 受到挤 压作用使得内胶层渗透到增强层的里面，沿着定位环和模芯之间的间 隙流下， 最终被挤压在增强层的内侧， 而外胶层料从外层挤压机出来 后直接顺着外层流道下流， 最终被挤压在增强层的外侧。

Claims

权 利 要 求
1.一种压裂液输送软管的制造方法，其特征是：该方法包括如下歩骤：
(1) 外胶层的干燥搅拌配色： 把外胶层粒料和色母粒料按 100: (0-1.5) 的比例放在一台搅拌机搅拌然后吸入烘干机中在温度为
70-110°C下进行干燥 1-6小时；
(2) 内胶层的干燥搅拌配色： 把内胶层粒料和色母粒料按比例 放在一台搅拌机搅拌然后吸入烘干机中在温度为 70-11CTC下进行干 燥 1-6小时；
(3) 制作增强层： 按产品设计规格参数编织管状增强层；
(4) 成品制作： 把增强层穿在共挤模具的模芯上， 把歩骤 （1) 和歩骤 （2) 中干燥好的粒料分别吸入两台挤出机中， 启动挤出机和 牵引机使得增强层、外胶层料、内胶层料共同通过共挤设备得出产品。
2.根据权利要求 1所述的压裂液输送软管的制造方法， 其特征是： 歩 骤 （1) 中所述的外胶层粒料采用 TPU粒料或者 TPU与 PVC合金， 歩 骤（2)中所述的内胶层料粒采用 TPU粒料或者 TPU/PVC合金或者 PVC 或者 PVC/丁晴， 所述的 TPU与 PVC合金中 TPU:PVC=100: 0-70； 所述 的 PVC/丁晴中 PVC:丁晴 =100: 0-70； 歩骤 （4) 中所述的挤出操作 温度在 150-210°Co
3.根据权利要求 1或 2所述的压裂液输送软管的制造方法，其特征是： 歩骤 （3) 中所述的增强层采用经线和纬线编织成管状， 所述的经线 或者纬线采用涤纶长丝和 /或尼龙长丝和 /或芳纶。
4.一种用上述方法制造的压裂液输送软管， 其特征是： 该软管按由外 到里包括：外胶层、增强层、内胶层，所述的外胶层厚度为 0. 5-4. 0mm, 所述的增强层厚度 1. 5-5. 0匪， 所述的内胶层厚度为 0. 5-4. 0匪， 所 述的外胶层和内胶层通过共挤设备共挤到所述的增强层上得到。
5.根据权利要求 4所述的压裂液输送软管， 其特征是： 所述的增强层 由经线和纬线编织成管状。
6.根据权利要求 4或 5所述的压裂液输送软管， 其特征是： 所述的增 强层沿轴向均匀编制铜丝起抗静电作用。
7.一种用于上述压裂液输送软管制作的共挤设备：该共挤设备包括安 装支架， 其特征是： 所述的安装支架上中间安装井架， 所述的安装支 架的两端分别安装内层挤出机和外层挤出机，所述的井架下部安装挤 出模具， 所述的内层挤出机和所述的外层挤出机分别与挤出模具连 接， 所述的挤出模具连接牵引机。
8.根据权利要求 7所述的用于上述压裂液输送软管制作的共挤设备， 其特征是： 所述的挤出模具包括用于套装增强层的模芯， 所述的模芯 外面套有定位环， 所述的定位环中部具有一组长通孔， 所述的定位环 外部套有模根， 所述的模根外部设置有内腔套， 所述的模根和所述的 内腔套之间形成内层流道，所述的内层流道连通所述的长通孔和所述 的内层挤出机， 所述的内腔套外部设置有外腔套， 所述的内腔套和所 述的外腔套之间形成外层流道，所述的外层流道连通所述的外层挤出
9. 根据权利要求 Ί或 8所述的用于上述压裂液输送软管制作的共挤 设备， 其特征是： 所述的定位环与所述的内腔套之间的间隙等于增强
10
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