WO2016074632A1 - 传感器集成装置 - Google Patents
传感器集成装置 Download PDFInfo
- Publication number
- WO2016074632A1 WO2016074632A1 PCT/CN2015/094454 CN2015094454W WO2016074632A1 WO 2016074632 A1 WO2016074632 A1 WO 2016074632A1 CN 2015094454 W CN2015094454 W CN 2015094454W WO 2016074632 A1 WO2016074632 A1 WO 2016074632A1
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- WO
- WIPO (PCT)
- Prior art keywords
- urea
- joint
- sensor
- integrated device
- main body
- Prior art date
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N11/00—Monitoring or diagnostic devices for exhaust-gas treatment apparatus, e.g. for catalytic activity
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/40—Engine management systems
Definitions
- the present invention relates to the field of sensors for engine exhaust gas treatment systems, and more particularly to a sensor integrated device.
- Prior art engine exhaust gas treatment systems typically include a urea tank, a urea pump for withdrawing urea solution from the urea tank, and a nozzle coupled to the urea pump.
- the nozzle is used to spray atomized urea into the exhaust pipe of the engine to achieve purification of the exhaust gas.
- a sensor integrated device including a main body portion provided with a cavity, a first joint connecting the main body portion, and a second joint connecting the main body portion, the first a connector for connecting to the urea can, the body portion further comprising a surface outside the cavity and a temperature sensor and a pressure sensor mounted on the surface, the temperature sensor and the pressure sensor are partially exposed Said in the cavity.
- the surface is provided with a first mounting hole and a second mounting hole that communicate with the cavity, and the temperature sensor and the pressure sensor are respectively assembled in the first mounting hole With the second mounting hole.
- the first mounting hole and the second mounting hole are disposed on the same side of the main body portion.
- the first mounting hole and the second mounting hole are close to each other.
- the main body portion is substantially rectangular, the first joint and the second joint are located at two sides of the main body portion, and the first joint, the main body portion and the The second joint is arranged in a straight line. .
- a filter mesh is respectively installed in the first joint and the second joint, and a first tapered sealing surface on the outer side of the filter mesh is disposed in the second joint.
- the temperature sensor is a urea temperature sensor
- the urea temperature sensor includes a first mounting portion pressed against the surface and a first extending portion extending from the first mounting portion, The end of the first extension is exposed within the cavity.
- the urea temperature sensor is further provided with a first sealing ring sleeved on the first extension.
- the pressure sensor is a urea pressure sensor
- the urea pressure sensor includes a second mounting portion and a second extending portion extending from the second mounting portion, and the second mounting portion is pressed against The surface of the second extension is exposed within the cavity.
- the inner side of the second mounting portion is provided with an internal thread
- the outer side of the second extending portion is provided with an external thread of the internal thread
- the invention integrates a plurality of sensors, so that the sensor integrated device can be applied to all types of urea tanks, that is, whether the urea tank has a liquid level sensor, a temperature sensor or a pressure sensor, It is possible to adapt to, for example, the engine exhaust gas treatment system disclosed in the present invention. This setting greatly facilitates the use of the customer, and also achieves the intelligent integration of accurate detection, voltage regulation and multi-stage purification of urea.
- Figure 1 is a schematic diagram of an engine exhaust gas treatment system of the present invention.
- FIG. 2 is a perspective view of the sensor integrated device of the present invention.
- Fig. 3 is a partially exploded perspective view of Fig. 2;
- Figure 4 is a side elevational view of the side of the sensor integrated device of the present invention having a second joint.
- Figure 5 is a cross-sectional view of the sensor integrated device of the present invention taken along line A-A of Figure 4;
- Figure 6 is a schematic view showing the second joint of the sensor integrated device of the present invention not connected to the pipe sleeved in the sleeve.
- Figure 7 is a schematic illustration of the conduit of Figure 6 inserted into the second joint.
- Figure 8 is a perspective view of the filter of the present invention.
- Figure 9 is a partial exploded perspective view of Figure 8.
- Figure 10 is a schematic cross-sectional view of the filter of Figure 8.
- Figure 11 is a perspective view of the fluid delivery device of the present invention.
- Figure 12 is a front elevational view of the fluid delivery device of the present invention.
- Figure 13 is a schematic illustration of the removal of the front wall of the fluid delivery device of the present invention.
- Figure 14 is a perspective view of another angle of the fluid delivery device of the present invention.
- Figure 15 is a bottom plan view showing the front wall of the fluid delivery device of the present invention opening 120 degrees and the first side wall opening 90 degrees.
- Figure 16 is a cross-sectional view of the motor in the fluid transfer device of the present invention.
- an engine exhaust gas treatment system 100 is disclosed that is applied to the exhaust gas treatment of engine 200.
- the engine exhaust gas treatment system 100 includes a urea tank 1, a sensor integration device 2 connected to the urea tank 1, a filter 3 connected downstream of the sensor integration device 2, and a fluid delivery device for conveying the urea solution. 4.
- a common rail 5 connected to the fluid transport device 4 and a nozzle 6 connected to the common rail 5.
- the engine 200 is a high power engine that typically exceeds 500 kilowatts. Accordingly, the nozzle 6 typically has a plurality. The nozzle 6 is used to inject a urea solution into the engine exhaust pipe 201.
- the atomized urea solution is decomposed into ammonia gas in the engine exhaust pipe 201, and the ammonia gas can react with nitrogen oxides in the exhaust gas, thereby reducing the emission of nitrogen oxides.
- the invention is not described herein.
- the sensor integrated device 2 includes a main body portion 20 in the middle, a first joint 21 on one side of the main body portion 20, and a second joint 22 on the other side of the main body portion 20.
- the main body portion 20 is substantially rectangular, and the first joint 21 and the second joint 22 both have external threads.
- the first joint 21 is used to be connected to the urea tank 1.
- the body portion 20 includes a cavity 23, a surface 24 surrounding the cavity 23, and a urea temperature sensor 25 and a urea pressure sensor 26 mounted on the surface 24.
- the surface 24 is provided with a first mounting hole 241 communicating with the cavity 23 and a second mounting hole 242 adjacent to the first mounting hole 241.
- the first mounting hole 241 is for mounting the urea temperature sensor 25, and the second mounting hole 242 is for mounting the urea pressure sensor 26.
- the first mounting hole 241 and the second mounting hole 242 They are close to each other and are located on the same side of the main body portion 20. So, on the one hand, it is convenient to install the urea temperature sensor 25 and the urea pressure sensor 26 from one side; on the other hand, since the urea temperature sensor 25 is closer to the urea pressure sensor 26, The data of the person facilitates the accuracy of the comprehensive determination by the controller (not shown).
- the urea temperature sensor 25 includes a first mounting portion 251 , a first extending portion 252 extending from the first mounting portion 251 , and a first sealing ring 253 sleeved on the first extending portion 252 .
- the first sealing ring 253 can achieve a good sealing effect.
- the first mounting portion 251 is pressed against the surface 24.
- the end of the first extension 252 is exposed within the cavity 23.
- the urea temperature sensor 25 is able to detect its temperature and conduct the temperature signal to the controller.
- the urea pressure sensor 26 includes a second mounting portion 261 and a second extension portion 262 extending from the second mounting portion 261.
- the inner side of the second mounting hole 242 is provided with an internal thread
- the outer side of the second extending portion 262 is provided with an external thread, and the inner thread can be sealed by the cooperation of the external thread.
- filters 211 and 221 are respectively installed in the first joint 21 and the second joint 22 to filter the urea solution.
- a first tapered sealing surface 222 located outside the filter 221 is disposed in the second joint 22 .
- the second joint 22 is connected to the pipe 28 through a sleeve 27.
- the sleeve 27 is provided with an opening (not labeled) through which the conduit 28 passes and an internal thread located on the inside.
- the line 28 includes a head 281 and a sealing ring 282 that is sleeved over the head 281.
- the head 281 is provided with a second tapered sealing surface 283 corresponding to the first tapered sealing surface 222.
- the head 281 of the pipe 28 is inserted into the second joint 22, so that the first tapered sealing surface 222 is fitted to the second tapered sealing surface 283.
- the seal ring 282 is located between the first tapered sealing surface 222 and the second tapered sealing surface 283 for further sealing.
- the internal thread of the sleeve 27 cooperates with the external thread of the second joint 22, such that the line 28 and the second joint 22 are connected within the sleeve 27.
- urea tanks there are many types of urea tanks on the market. Some urea tanks have liquid level sensors, while others do not. Therefore, designing an exhaust gas treatment system that can be applied to various types of urea tanks is a technology that needs to be solved in the industry. problem.
- the sensor integrated device 2 of the present invention a urea temperature sensor 25 and a urea pressure sensor 26 are mounted thereon. In this way, even if the urea tank 1 itself does not have a liquid level sensor, the present invention can infer the liquid level in the urea tank 1 by converting the pressure signal of the urea pressure sensor 26 into a corresponding electrical signal. That is to say, the sensor integrated device 2 of the present invention can be applied to all types of urea tanks 1, which greatly facilitates the application of the customer.
- the sensor integrated device 2 realizes intelligent integration of accurate monitoring, voltage regulation and multi-stage purification of urea.
- the filter 3 includes a housing 31, a filter element 32 mounted in the housing 31, and a head 33 that cooperates with the housing 31.
- the filter element 32 has a substantially hollow cylindrical shape including a filter layer 321 at the periphery and an inner space 322 surrounded by the filter layer 321 .
- the head portion 33 includes an upper end portion 331, a lower end portion 332 at the bottom of the upper end portion 331, an inlet joint 333 connected to one side of the upper end portion 331, and an outlet connected to the other side of the upper end portion 331.
- Connector 334 The inlet fitting 333 and the outlet fitting 334 are disposed separately from the upper end portion 331 and then assembled together for ease of replacement.
- the upper end portion 331 and the lower end portion 332 are machined parts and are of a unitary structure. This setting saves the cost of mold opening. At the same time, the inlet and outlet holes of the machined parts can be opened relatively large to meet the requirements of large flow.
- the filter 3 further includes a rubber pad 34 between the filter element 32 and the lower end portion 332. At least a portion of the lower end portion 332 extends into the rubber pad 34, and at least a portion of the rubber pad 34 extends into the filter element 32.
- the housing 31 includes a cylindrical portion 311, a bottom portion 312 at a bottom end of the cylindrical portion 311, a spring 313 disposed at the bottom portion 312 to support the filter element 32 upward, and a connection at a top end of the cylindrical portion 311.
- the connecting block 314 is welded to the top end of the tubular portion 311.
- the connecting block 314 is provided with internal threads.
- the lower end portion 332 is provided with an external thread that cooperates with the internal thread.
- the filter 3 further includes a sealing ring 315 that is sleeved on the lower end 332.
- the tubular portion 311 is relatively thin, it cannot provide a threaded structure, and the present invention solves this problem in an ingenious manner by providing the connecting block 314, thereby saving cost.
- the thickness of the connecting block 314 is greater than the thickness of the cylindrical portion 311.
- the bottom portion 312 and the tubular portion 311 are separately provided and then welded together, and the cost is low.
- the housing 31 is made of stainless steel in order to be resistant to alkaline solutions.
- the filter 3 is an external in-and-out filter, and the flow direction of the urea solution is shown in FIG.
- the present invention is configured by screwing the housing 31 and the head 33 so as to be replaced when needed In the case of the filter element 32, it is only necessary to unscrew the head 33 and the casing 31, and it is not necessary to perform the overall replacement of the filter 3, thereby saving maintenance costs.
- the fluid delivery device 4 includes an integrated cabinet 41, a pump 42 installed in the integrated cabinet 41, an inlet line 43 on one side of the pump 42, and the pump. An outlet line 44 on the other side of the 42 and a controller 45 mounted in the integrated cabinet 41 (see Figs. 13 and 15).
- the integrated cabinet 41 is substantially rectangular parallelepiped and includes a front wall 411, a rear wall 412, a top wall 413, a bottom wall 414, a first side wall 415, and a second side wall 416.
- the front wall 411 is a main operation interface
- the front wall 411 is provided with a human-machine interaction interface 4111, an emergency stop switch 4112, a main power switch 4113, a monitoring indicator 4114, and a door lock. 4115.
- the human-machine interaction interface 4111, the emergency stop switch 4112, and the main power switch 4113 are disposed in the middle of the front wall 411, and are arranged in order from top to bottom in the vertical direction.
- the human-computer interaction interface 4111, the emergency stop switch 4112 and the main power switch 4113 are both centered on the front wall 411, and the upper and lower positions follow ergonomic principles to ensure excellent operational line of sight comfort.
- the emergency stop switch 4112 quickly interrupts the system power source when an unexpected situation occurs in the system, and follows the maximum principle to ensure the safety of the system.
- the monitoring indicator 4114 can monitor and display the working state of the system in real time and online. In the illustrated embodiment of the invention, the monitoring indicator 4114 is a three color light (eg, red, yellow, green).
- the three-color lamp is a lamp, and in different working states, the monitoring indicator 4114 performs light display of different colors and frequencies. Through the display of the light, the working state of the system can be known at a glance. Compared with the prior art, three lamps are used to display different colors, and the three-color lamp of the invention can save cost and layout.
- the door lock 4115 is a yin-yang triangular opening and closing structure in the illustrated embodiment of the present invention, which imparts excellent physical safety characteristics to the system.
- a plurality of wire harness joints 4151 are mounted on the first side wall 415, and the wire harness joints 4151 are respectively connected inwardly with the controller 45, the pump 42, and various sensors, etc., respectively, outwardly and externally with signals of the system and Power supply and other connections.
- the harness connector 4151 is both near the bottom of the integrated cabinet 41, reducing the vibration intensity of the harness connector 4151.
- the controller 45 is located inside the first side wall 415.
- the front wall 411 can be opened 120 degrees with respect to the closed state position, and the first side wall 415 can be opened 90 degrees. Both the front wall 411 and the first side wall 415 have the same opening direction (for example, counterclockwise reverse in FIG. 15) to ensure the convenience of production and maintenance of the system.
- first side wall 415 is connected to the integrated cabinet 41 through a fixing mechanism on the inner side thereof.
- This design can save a set of door locks and make the outer side of the first side wall 415 simple and beautiful.
- the front wall 411 is first opened, and then the fixing mechanism is unlocked from the inner side, and finally the first side wall 415 is opened.
- the rear wall 412 is provided with a U-shaped support mechanism 4121, so that the integrated cabinet 41 can be wall-mounted.
- the supporting mechanism 4121 is provided with mounting holes 4122.
- Each of the mounting holes 4122 includes a wide opening guide portion 4123 and a narrow opening positioning portion 4124 to ensure easy and safe assembly performance.
- the pump 42 is a gear pump.
- the pump 42 includes a motor 421 at the bottom, a pump head 422 at the top, and a magnetic coupling portion 423 between the motor 421 and the pump head 422.
- the motor 421 includes a motor output shaft 4211.
- a U-shaped urea flow path 4221 and a gear mechanism 4222 located at the bottom of the urea flow path 4221 are disposed in the pump head 422.
- the magnetic coupling portion 423 includes an active magnetic disk drive 4231 and a driven magnetic disk drive 4232.
- the motor shaft 4211 is connected and fixed to the active magnetic disk 4231.
- the driven magnetic drive 4232 is provided with a pump head input shaft 4233, and the pump head input shaft 4233 is connected and fixed to the gear mechanism 4222.
- the motor 421 is powered on, the motor output shaft 4211 drives the active magnetic disk drive 4231 to rotate, and then the active magnetic disk drive 4231 drives the pump head input shaft 4233 to rotate, and the pump head input shaft 4233 further drives the gear.
- the mechanism 4222 rotates to cause the urea solution to flow in the direction of the arrow and increase the outlet pressure of the urea solution.
- the gear mechanism 4222 since the gear mechanism 4222 is located at the bottom of the urea flow path 4221, it is possible to prevent air bubbles in the urea solution from accumulating inside the pump head 422, thereby ensuring the working efficiency of pumping liquid and Deliver the accuracy of metering control.
- the inlet line 43 includes a pump front monitoring module 431 at the bottom end, an inlet tube 432 connecting the pump front monitoring module 431, and an inlet connection tube 433 connecting the inlet tube 432 to the pump head 422.
- the inlet line 43 connected by a plurality of components can provide convenient maintenance.
- the pre-pump monitoring module 431 has a hexagonal structure and is characterized by high reliability, compactness, and light weight.
- the pump front monitoring module 431 is mounted with a negative pressure sensor 4311 and a urea temperature sensor, wherein by monitoring the negative pressure sensor 4311, it can be determined whether the filter 3 needs to be replaced.
- the outlet line 44 includes a post-pump monitoring module 441 at the bottom end, an outlet tube 442 that connects the post-pump monitoring module 441, and an outlet connection tube 443 that connects the outlet tube 442 to the pump head 422. .
- the outlet line 44 connected by a plurality of components can provide convenient maintenance.
- the post-pump monitoring module 441 has a hexagonal structure and is characterized by high reliability, compactness, and weight reduction.
- a pressure sensor 4411 is mounted on the post-pump monitoring module 441 to detect the pressure of the high pressure section.
- the pre-pump monitoring module 431 and the post-pump monitoring module 441 are both perforated, that is, the pre-pump monitoring module 431 and the post-pump monitoring module 441 are both traversed.
- the bottom wall 414 of the integrated cabinet 41 is described.
- the pre-pump monitoring module 431 is provided with a urea suction interface 4310.
- the post-pump monitoring module 441 is provided with a urea output interface 4410.
- the urea suction interface 4310 and the urea output interface 4410 are both located in the integrated cabinet 41.
- the external urea pipeline is arranged to be fully protected, avoiding mechanical collisions, other liquids and dust pollution.
- the pre-pump monitoring module 431 and the post-pump monitoring module 441 both adopt parallel urea piping design to minimize pressure loss.
- the flow path of the urea solution forms a liquid coil type temperature cooling in the integrated cabinet 41.
- the pump 42 serves as a power source for urea delivery, and is disposed on the adjustment support mechanism 4125 of the rear wall 412 in a wall-mounted manner to ensure tolerance and adjustability in the assembly process in the up and down direction.
- the pump 42 is arranged in a vertical direction, the pump head 422 is vertically upward, and on the one hand, the active magnetic drive 4231 and the driven magnetic field can be ensured based on the magnetic drive mechanism.
- the alignment performance of the drive 4232 improves the transmission efficiency of the magnetic driving force in the pump assembly; on the other hand, it can eliminate the air bubbles accumulated in the urea solution in the pump body, ensure the working efficiency of the pump 42 pumping liquid, and deliver the metering The precision of the control.
- a pump driving module 4131 installed inside the top wall 413 is further disposed in the integrated cabinet 41 .
- This design enables the pump drive module 4131 to be in a higher position to avoid short circuits due to overflow of the urea solution.
- the pump driving module 4131 is in close contact with the top wall 413. In this way, the heat generated by the operation of the pump driving module 4131 can be dissipated in time to ensure the normal operating temperature of the pump driving module 4131.
- the pump drive module 4131 is adjacent to the pump head 422, the urea solution within the pump head 422 also carries away some of the thermal energy radiated by the pump drive module 4131.
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Abstract
一种传感器集成装置,包括设有腔体(23)的主体部(20)、连接主体部(20)的第一接头(21)以及连接主体部(20)的第二接头(22),第一接头(21)用以与尿素罐(1)连接,主体部(20)还包括位于腔体(23)外的表面以及安装在表面上的温度传感器(25)及压力传感器(26),温度传感器(25)与压力传感器(26)均部分暴露在腔体内,该传感器集成装置能够适用于所有类型的尿素罐,方便客户使用。
Description
本发明涉及发动机尾气处理***的传感器领域,尤其涉及一种传感器集成装置。
现有技术中的发动机尾气处理***通常包括尿素罐、用以将尿素溶液从所述尿素罐中抽出的尿素泵以及与所述尿素泵相连的喷嘴。所述喷嘴用以向发动机的排气管中喷射雾化的尿素,以实现对尾气的净化。
众所周知,发动机尾气处理***需要非常严格的控制,以确保***能够正常、有效地运行。相应地,需要采集各种信号(例如液位、尿素溶液的温度以及压力)进行程序控制。然而,目前市面上的尿素罐的种类很多,有些尿素罐内设有液位传感器、温度传感器以及压力传感器,而有些则没有。
因此,有必要设计一种能够适用于各种类型尿素罐的尾气处理***内的传感器集成装置,以解决上述问题。
发明内容
本发明的目的在于提供一种能够适用于各种类型尿素罐的尾气处理***的传感器集成装置。
为实现上述目的,本发明采用如下技术方案:一种传感器集成装置,包括设有腔体的主体部、连接所述主体部的第一接头以及连接所述主体部的第二接头,所述第一接头用以与尿素罐连接,所述主体部还包括位于所述腔体外的表面以及安装在所述表面上的温度传感器及压力传感器,所述温度传感器与所述压力传感器均部分暴露在所述腔体内。
作为本发明进一步改进的技术方案,所述表面上设有与所述腔体连通的第一安装孔及第二安装孔,所述温度传感器及所述压力传感器分别组装在所述第一安装孔与所述第二安装孔内。
作为本发明进一步改进的技术方案,所述第一安装孔与所述第二安装孔被设于所述主体部的同一侧。
作为本发明进一步改进的技术方案,所述第一安装孔与所述第二安装孔相互靠近。
作为本发明进一步改进的技术方案,所述主体部大致呈矩形,所述第一接头与所述第二接头位于所述主体部的两侧,且所述第一接头、所述主体部及所述第二接头呈直线布置。。
作为本发明进一步改进的技术方案,所述第一接头与所述第二接头内分别安装有过滤网,所述第二接头内设有位于所述过滤网外侧的第一锥形密封面。
作为本发明进一步改进的技术方案,所述温度传感器为尿素温度传感器,所述尿素温度传感器包括抵压在所述表面上的第一安装部以及自第一安装部延伸形成的第一延伸部,所述第一延伸部的末端暴露在所述腔体内。
作为本发明进一步改进的技术方案,所述尿素温度传感器还设有套接在所述第一延伸部上的第一密封圈。
作为本发明进一步改进的技术方案,所述压力传感器为尿素压力传感器,所述尿素压力传感器包括第二安装部及自第二安装部延伸的第二延伸部,所述第二安装部抵压在所述表面上,所述第二延伸部的末端暴露在所述腔内。
作为本发明进一步改进的技术方案,所述第二安装部的内侧设有内螺纹,所述第二延伸部的外侧设有所述内螺纹配合的外螺纹。
相较于现有技术,本发明通过将多个传感器集成在一起,从而使得该传感器集成装置能够适用于所有类型的尿素罐,即无论尿素罐有没有液位传感器、温度传感器或者压力传感器,均能够适应例如本发明所揭示的发动机尾气处理***。如此设置,极大的方便了客户的使用,并且同样实现了尿素的精确检测、稳压以及多级净化的智能化集成。
图1是本发明发动机尾气处理***的原理图。
图2是本发明传感器集成装置的立体图。
图3是图2的部分立体分解图。
图4是本发明传感器集成装置的具有第二接头的一侧的侧视图。
图5是本发明传感器集成装置沿图4中A-A线的剖视图。
图6是本发明传感器集成装置的第二接头与套在管套内的管路未连接的示意图。
图7是图6中管路***第二接头内的示意图。
图8本发明过滤器的立体图。
图9是图8的部分立体分解图。
图10是图8中过滤器的剖面示意图。
图11是本发明流体输送装置的立体图。
图12是本发明流体输送装置的主视图。
图13是本发明流体输送装置拆除前壁的示意图。
图14是本发明流体输送装置的另一角度的立体图。
图15是本发明流体输送装置前壁打开120度,第一侧壁打开90度的仰视示意图。
图16是本发明流体输送装置内的电机的剖面图。
请参图1所示,本发明揭示了一种发动机尾气处理***100,其应用于发动机200的尾气处理中。所述发动机尾气处理***100包括尿素罐1、与所述尿素罐1相连的传感器集成装置2、连接于所述传感器集成装置2下游的过滤器3、用以输送所述尿素溶液的流体输送装置4、与所述流体输送装置4相连的共轨5以及与所述共轨5相连的喷嘴6。在本发明图示的实施方式中,所述发动机200为功率一般超过500千瓦的大功率发动机。相应地,所述喷嘴6通常具有多个。所述喷嘴6用以向所述发动机排气管201中喷射尿素溶液。经过雾化的尿素溶液在所述发动机排气管201中被分解成氨气,所述氨气能够与尾气中的氮氧化合物发生反应,从而降低氮氧化合物的排放。鉴于这种尾气处理技术的原理对所属技术领域的技术人员是熟知的,本发明在此不再赘述。
请参图2所示,所述传感器集成装置2包括一个位于中间的主体部20、位于所述主体部20一侧的第一接头21以及位于所述主体部20另一侧的第二接头22。在本发明图示的实施方式中,所述主体部20大致呈矩形,所述第一接头21与所述第二接头22均具有外螺纹。所述第一接头21用以与所述尿素罐1相连。请参图3及图5所示,所述主体部20包括一个腔体23、环绕所述腔体23的表面24以及安装于所述表面24上的尿素温度传感器25与尿素压力传感器26。所述表面24上设有与所述腔体23连通的第一安装孔241以及靠近所述第一安装孔241的第二安装孔242。所述第一安装孔241用以安装所述尿素温度传感器25,所述第二安装孔242用以安装所述尿素压力传感器26。在本发明图示的实施方式中,所述第一安装孔241与所述第二安装孔242
相互靠近且位于所述主体部20的同一侧。如此设置,一方面,便于从一侧安装所述尿素温度传感器25以及所述尿素压力传感器26;另一方面,由于所述尿素温度传感器25与所述尿素压力传感器26距离较近,因此结合二者的数据有利于控制器(未图示)进行综合判定的准确性。
所述尿素温度传感器25包括第一安装部251、自所述第一安装部251延伸的第一延伸部252以及套接在所述第一延伸部252上的第一密封圈253。当将所述尿素温度传感器25组装入所述第一安装孔241内后,所述第一密封圈253能够实现良好的密封效果。组装后,所述第一安装部251抵压在所述表面24上。所述第一延伸部252的末端暴露于所述腔体23内。当尿素溶液流经所述腔体23时,所述尿素温度传感器25能够检测到其温度,并将该温度信号传导给所述控制器。
所述尿素压力传感器26包括第二安装部261以及自所述第二安装部261延伸的第二延伸部262。所述第二安装孔242的内侧设有内螺纹,所述第二延伸部262的外侧设有外螺纹,通过所述内螺纹与所述外螺纹的配合能够实现密封。组装后,所述第二安装部261抵压在所述表面24上。所述第二延伸部262的末端暴露于所述腔体23内。当尿素溶液流经所述腔体23时,所述尿素压力传感器26能够检测到其压力,并将该压力信号传导给所述控制器。
请参图5所示,所述第一接头21与所述第二接头22内分别安装有过滤网211、221,以对尿素溶液进行过滤。所述第二接头22内设有位于所述过滤网221外侧的第一锥形密封面222。请参图6所示,使用时,所述第二接头22通过一个管套27与管路28连接。具体地,所述管套27设有一个供所述管路28穿过的开口(未标号)以及位于内侧的内螺纹。所述管路28包括头部281以及套接在所述头部281上的密封圈282。所述头部281设有与所述第一锥形密封面222向对应的第二锥形密封面283。请参图7所示,组装时,所述管路28的头部281***所述第二接头22内,使所述第一锥形密封面222贴合所述第二锥形密封面283,以实现良好的密封性。另外,所述密封圈282位于所述第一锥形密封面222以及所述第二锥形密封面283之间以进一步密封。所述管套27的内螺纹与所述第二接头22的外螺纹相配合,如此设置,所述管路28与所述第二接头22在所述管套27内达成连接。
目前,市场上尿素罐的种类很多,有些尿素罐内设有液位传感器,而有些则没有,因此,设计出一种能够适用于各种类型尿素罐的尾气处理***是业界需要解决的技术
问题。根据本发明的传感器集成装置2,其上安装有尿素温度传感器25以及尿素压力传感器26。如此设置,即使所述尿素罐1本身不具有液位传感器,本发明通过将所述尿素压力传感器26的压力信号转换成相应的电信号也可以推断出所述尿素罐1内的液位。也就是说,本发明的传感器集成装置2能够适用于所有类型的尿素罐1,极大的方便了客户的应用。所述传感器集成装置2实现了尿素的精确监测、稳压以及多级净化的智能化集成。
请参图8至图10所示,所述过滤器3包括壳体31、安装于所述壳体31内的滤芯32以及与所述壳体31相配合的头部33。所述滤芯32大致呈中空的筒状,其包括位于***的过滤层321以及由所述过滤层321围绕的内部空间322。所述头部33包括上端部331、位于所述上端部331底部的下端部332、与所述上端部331的一侧连接的进口接头333以及与所述上端部331的另一侧连接的出口接头334。所述进口接头333以及所述出口接头334与所述上端部331分开设置,然后组装在一起,从而便于更换。所述上端部331以及所述下端部332均为机加工件,且是一体式结构。如此设置,可以节省开模成本。同时,机加工件的进出口孔可以开得比较大,以满足大流量的要求。
请参图10所示,所述过滤器3还包括位于所述滤芯32与所述下端部332之间的橡胶垫34。所述下端部332至少有一部分延伸入所述橡胶垫34内,所述橡胶垫34至少有一部分延伸入所述滤芯32内。
所述壳体31包括筒部311、位于所述筒部311底端的底部312、设置于所述底部312且用以向上支撑所述滤芯32的弹簧313、以及位于所述筒部311顶端的连接块314。在本发明图示的实施方式中,所述连接块314焊接于所述筒部311的顶端。所述连接块314设有内螺纹。相应地,所述下端部332设有与所述内螺纹相配合的外螺纹。为了加强密封和防尘,所述过滤器3还包括套接在所述下端部332上的密封圈315。由于所述筒部311比较薄,其无法设置螺纹结构,本发明通过设置所述连接块314巧妙的解决了此问题,节省了成本。请参图10所示,所述连接块314的厚度大于所述筒部311的厚度。另外,在本发明图示的实施方式中,所述底部312与所述筒部311是分开设置,然后再焊接起来的,成本较低。在本发明的一种实施方式中,所述壳体31是由不锈钢制成,以为了能够耐碱性溶液。在本发明图示的实施方式中,所述过滤器3为外进内出式的过滤器,所述尿素溶液的流动方向请参图10所示。
本发明通过将所述壳体31与所述头部33通过螺纹连接,如此设置,当需要更换
滤芯32时,只需要将所述头部33与所述壳体31拧开即可,不需要进行所述过滤器3的整体更换,从而节省了维护成本。
请参图11至图15所示,所述流体输送装置4包括集成柜41、安装于所述集成柜41内的泵42、位于所述泵42一侧的进口管路43、位于所述泵42另一侧的出口管路44、以及安装于所述集成柜41内的控制器45(参图13、图15)。
所述集成柜41大致呈长方体,其包括前壁411、后壁412、顶壁413、底壁414、第一侧壁415以及第二侧壁416。在本发明图示的实施方式中,所述前壁411为主操作界面,所述前壁411上设有人机交互界面4111、急停开关4112、主电源开关4113、监测指示器4114以及门锁4115。所述人机交互界面4111、所述急停开关4112及所述主电源开关4113三者布置在所述前壁411的中部,且沿竖直方向从上到下依次排列。如此设置,所述主操作界面整体满足简洁、对称美学设计。所述人机交互界面4111、所述急停开关4112及所述主电源开关4113在所述前壁411上均左右居中,上下位置遵循人机工程学原则,保证优良的操作视线舒适度。所述急停开关4112在***发生意外情况时,快速中断***动力源,遵循最大原则,保证***的安全。所述监测指示器4114能够实时、在线监控、显示***的工作状态。在本发明图示的实施方式中,所述监测指示器4114为三色灯(例如红、黄、绿)。所述三色灯是一个灯,其在不同的工作状态,该监测指示器4114进行不同颜色及频率的灯光显示。通过所述灯光显示就能够一目了然的知晓所述***的工作状态。相较于现有技术中采用三个灯分别显示不同的颜色,本发明的三色灯能够节省成本且布局方便。所述门锁4115在本发明图示的实施方式中为阴阳三角启闭结构,其赋予***优异的物理安全特性。
所述第一侧壁415上安装有若干线束接头4151,所述线束接头4151向内分别与所述控制器45、所述泵42以及各种传感器等连接,向外分别与***外部的信号以及电源等连接。在本发明图示的实施方式中,所述线束接头4151均靠近所述集成柜41的底部,降低了所述线束接头4151的振动烈度。所述控制器45位于所述第一侧壁415的内侧。
请参图15所示,相对于闭合状态位置,所述前壁411能够打开120度,所述第一侧壁415能够打开90度。所述前壁411以及所述第一侧壁415二者的打开方向相同(例如图15中均为逆时针反向),以保证该***生产、维护的便利性。
需要说明的是,所述第一侧壁415通过其内侧的固定机构与所述集成柜41相连,
这种设计能够节省一套门锁,并且使所述第一侧壁415外侧面简洁、美观。使用时,如需打开所述第一侧壁415,首先需打开所述前壁411,然后从内侧将所述固定机构解锁,最后才能将所述第一侧壁415打开。
请参图14所示,所述后壁412上设有U形支撑机构4121,从而使所述集成柜41能够实现壁挂式安装。所述支撑机构4121设有安装孔4122,每一安装孔4122包括开口较宽的导向部4123以及开口较窄的定位部4124,保证装配性能的简便、安全。
请参图13所示,在本发明图示的实施方式中,所述泵42为齿轮泵。所述泵42包括位于底部的电机421、位于顶部的泵头422以及位于所述电机421与所述泵头422之间的磁性耦合部423。请参图16所示,所述电机421包括一根电机输出轴4211。所述泵头422内设有一个U形的尿素流道4221以及位于所述尿素流道4221最底部的齿轮机构4222。所述磁性耦合部423包括主动磁驱4231以及从动磁驱4232。所述电机轴4211与所述主动磁驱4231相连接、固定。所述从动磁驱4232设有一根泵头输入轴4233,所述泵头输入轴4233与所述齿轮机构4222相连接、固定。
工作时,所述电机421上电,所述电机输出轴4211带动所述主动磁驱4231旋转,然后所述主动磁驱4231带动泵头输入轴4233旋转,所述泵头输入轴4233进一步带动齿轮机构4222旋转,从而使所述尿素溶液沿箭头的方向流动,且提高尿素溶液的出口压力。在本发明图示的实施方式中,由于所述齿轮机构4222位于所述尿素流道4221最底部,能够避免尿素溶液内的气泡在所述泵头422内部积聚,确保泵送液体的工作效率及投送计量控制的精度。
所述进口管路43包括位于底端的泵前监测模块431、连接所述泵前监测模块431的入口管432以及将所述入口管432连接于所述泵头422的入口连接管433。由多个部件连接的所述进口管路43能够起到便捷的维护性。在本发明图示的实施方式中,所述泵前监测模块431为六角面结构,具有高可靠性、紧凑化、轻量化的特点。所述泵前监测模块431上安装有负压传感器4311以及尿素温度传感器,其中通过监测所述负压传感器4311能够判断所述过滤器3是否需要更换。
类似地,所述出口管路44包括位于底端的泵后监测模块441、连接所述泵后监测模块441的出口管442以及将所述出口管442连接于所述泵头422的出口连接管443。由多个部件连接的所述出口管路44能够起到便捷的维护性。在本发明图示的实施方式中,所述泵后监测模块441为六角面结构,具有高可靠性、紧凑化、轻量化的特点。
所述泵后监测模块441上安装有压力传感器4411,以检测高压段的压力。
在本发明图示的实施方式中,所述泵前监测模块431与所述泵后监测模块441均为穿孔安装,即所述泵前监测模块431与所述泵后监测模块441均穿过所述集成柜41的底壁414。所述泵前监测模块431上开设有尿素吸取接口4310,所述泵后监测模块441上开设有尿素输出接口4410,所述尿素吸取接口4310与所述尿素输出接口4410均位于所述集成柜41的底部,保证外部尿素管道走向布置得到充分保护,避免了机械碰撞、其他液体、灰尘的污染。另外,所述泵前监测模块431与所述泵后监测模块441均采用平行尿素管道设计,以最大限度的降低压损。
请参图13所示,在本发明图示的实施方式中,所述尿素溶液的流道在所述集成柜41内形成液体盘管式温度冷却。所述泵42作为尿素输送的动力源,其采用壁挂式布置在所述后壁412的调节支撑机构4125上,以保证上下方向装配过程中的容差性、可调节性。在本发明图示的实施方式中,所述泵42沿竖直方向布置,所述泵头422竖直朝上,一方面,基于磁力驱动机构,能够保证所述主动磁驱4231与从动磁驱4232的对中性能,提升泵总成内磁性驱动力的传递效率;另一方面,能够消除积聚在泵体内尿素溶液中的气泡,确保所述泵42泵送液体的工作效率及投送计量控制的精度。
请参图13所示,所述集成柜41内还设有安装在所述顶壁413内侧的泵驱动模块4131。这种设计能够将所述泵驱动模块4131位于较高的位置,从而避免因尿素溶液的溢出而发生短路。所述泵驱动模块4131与所述顶壁413紧密贴合。如此设置,能够及时散热所述泵驱动模块4131工作产生的热量,保证该所述泵驱动模块4131正常的工作温度。另外,因为所述泵驱动模块4131靠近所述泵头422,所述泵头422内的尿素溶液也会带走所述泵驱动模块4131辐射的部分热能。
另外,以上实施例仅用于说明本发明而并非限制本发明所描述的技术方案,对本说明书的理解应该以所属技术领域的技术人员为基础,例如“前后贯穿”指的是在未安装其他零件之前是贯穿的,再例如对“前”、“后”、“左”、“右”、“上”、“下”等方向性的描述,尽管本说明书参照上述的实施例对本发明已进行了详细的说明,但是,本领域的普通技术人员应当理解,所属技术领域的技术人员仍然可以对本发明进行修改或者等同替换,而一切不脱离本发明的精神和范围的技术方案及其改进,均应涵盖在本发明的权利要求范围内。
Claims (10)
- 一种传感器集成装置,包括设有腔体的主体部、连接所述主体部的第一接头以及连接所述主体部的第二接头,其特征在于:所述第一接头用以与尿素罐连接,所述主体部还包括位于所述腔体外的表面以及安装在所述表面上的温度传感器及压力传感器,所述温度传感器与所述压力传感器均部分暴露在所述腔体内。
- 如权利要求1所述的传感器集成装置,其特征在于:所述表面上设有与所述腔体连通的第一安装孔及第二安装孔,所述温度传感器及所述压力传感器分别组装在所述第一安装孔与所述第二安装孔内。
- 如权利要求2所述传感器集成装置,其特征在于:所述第一安装孔与所述第二安装孔被设于所述主体部的同一侧。
- 如权利要求2所述的传感器集成装置,其特征在于:所述第一安装孔与所述第二安装孔相互靠近。
- 如权利要求1所述的传感器集成装置,其特征在于:所述主体部大致呈矩形,所述第一接头与所述第二接头位于所述主体部的两侧,且所述第一接头、所述主体部及所述第二接头呈直线布置。
- 如权利要求1所述的传感器集成装置,其特征在于:所述第一接头与所述第二接头内分别安装有过滤网,所述第二接头内设有位于所述过滤网外侧的第一锥形密封面。
- 如权利要求2所述的传感器集成装置,其特征在于:所述温度传感器为尿素温度传感器,所述尿素温度传感器包括抵压在所述表面上的第一安装部以及自第一安装部延伸形成的第一延伸部,所述第一延伸部的末端暴露在所述腔体内。
- 如权利要求7所述的传感器集成装置,其特征在于:所述尿素温度传感器还设有套接在所述第一延伸部上的第一密封圈。
- 如权利要求2所述的传感器集成装置,其特征在于:所述压力传感器为尿素压力传感器,所述尿素压力传感器包括第二安装部及自第二安装部延伸的第二延伸部,所述第二安装部抵压在所述表面上,所述第二延伸部的末端暴露在所述腔内。
- 如权利要求9所述的传感器集成装置,其特征在于:所述第二安装部的内侧设有内螺纹,所述第二延伸部的外侧设有所述内螺纹配合的外螺纹。
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CN204267137U (zh) * | 2014-11-14 | 2015-04-15 | 天纳克(苏州)排放***有限公司 | 传感器集成装置 |
CN204267134U (zh) * | 2014-11-14 | 2015-04-15 | 天纳克(苏州)排放***有限公司 | 流体输送装置 |
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DE10349143A1 (de) * | 2003-10-17 | 2005-05-19 | Daimlerchrysler Ag | Dosiereinheit |
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CN104405479A (zh) * | 2014-11-14 | 2015-03-11 | 天纳克(苏州)排放***有限公司 | 流体输送装置 |
CN204267137U (zh) * | 2014-11-14 | 2015-04-15 | 天纳克(苏州)排放***有限公司 | 传感器集成装置 |
CN204267134U (zh) * | 2014-11-14 | 2015-04-15 | 天纳克(苏州)排放***有限公司 | 流体输送装置 |
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