CN212622477U - Urea sensor of prevention of seepage corrosion - Google Patents
Urea sensor of prevention of seepage corrosion Download PDFInfo
- Publication number
- CN212622477U CN212622477U CN202021149218.0U CN202021149218U CN212622477U CN 212622477 U CN212622477 U CN 212622477U CN 202021149218 U CN202021149218 U CN 202021149218U CN 212622477 U CN212622477 U CN 212622477U
- Authority
- CN
- China
- Prior art keywords
- stainless steel
- concentration detection
- steel pipe
- corrosion
- detection module
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
Abstract
The utility model relates to a urea sensor preventing permeation and corrosion, which comprises a stainless steel pipe, a concentration detection module, a fixed seat used for being connected with a urea box and a control module arranged on the fixed seat; the two ends of the stainless steel pipe are respectively connected with the fixing seat and the concentration detection module, a signal wire is arranged in the stainless steel pipe, and the concentration detection module is electrically connected with the control module through the signal wire; the signal tube is protected, ammonia gas generated by urea at high temperature is prevented from permeating and corroding the signal tube, so that the product can be used in a high-temperature urea medium for a long time, and the measurement function of the product is ensured.
Description
Technical Field
The utility model belongs to the technical field of a urea sensor technique and specifically relates to indicate a prevention of seepage corrodes urea sensor.
Background
SCR technology has been commonly applied to vehicles in the fourth and fifth countries, and SCR systems require a urea solution storage device, commonly called a urea tank, which is equipped with a urea sensor.
Because the urea solution in the urea case can produce the ammonia under high temperature, the ammonia can permeate the plastic pipe of the outer parcel of signal line of corruption urea sensor, and then corrodes inside measurement signal line of plastic pipe and urea sensor electron device to lead to the measurement function of urea sensor to become invalid, make the urea sensor can't use for a long time in the urea medium of high temperature.
Therefore, in the present patent application, the applicant has elaborated a corrosion-resistant urea sensor to solve the above-mentioned problems.
SUMMERY OF THE UTILITY MODEL
The utility model discloses not enough to above-mentioned prior art exists, main aim at provides a prevention of seepage corrodes urea sensor, plays the guard action to the signal pipe, prevents that urea from producing ammonia infiltration corrosion signal pipe under high temperature for the product can use in high temperature urea medium for a long time, ensures the measurement function of product.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a urea sensor preventing permeation and corrosion comprises a stainless steel pipe, a concentration detection module, a fixed seat used for being connected with a urea box and a control module arranged on the fixed seat;
the stainless steel pipe is characterized in that the two ends of the stainless steel pipe are respectively connected with the fixing seat and the concentration detection module, a signal line is arranged in the stainless steel pipe, and the concentration detection module is electrically connected to the control module through the signal line.
As a preferable scheme, the signal line is electrically connected with an electronic connecting piece, and the electronic connecting piece is electrically connected with the concentration detection module.
As a preferred scheme, the device also comprises a connecting piece, and the lower end of the stainless steel pipe is connected with the concentration detection module through the connecting piece.
As a preferred scheme, the connecting piece is provided with a through hole which is communicated up and down, and the lower end of the stainless steel pipe extends into the through hole from the upper end of the connecting piece;
the concentration detection module is provided with an upper extension part, the upper extension part is provided with a first wire passing hole communicated with the interior of the concentration detection module, the upper extension part extends into the through hole from the lower end of the connecting piece, and the upper extension part is connected with the connecting piece; the signal wire sequentially penetrates through the through hole and the first wire passing hole to be electrically connected with the concentration detection module.
Preferably, the upper extension is connected with the connecting piece in a sealing mode through a first sealing piece.
Preferably, a limiting step part is formed on the inner wall of the through hole, and the lower end of the stainless steel pipe abuts against the limiting step part.
Preferably, the stainless steel pipe is connected with the fixed seat through a shaft sleeve.
Preferably, one of the shaft sleeve and the fixed seat is provided with an external thread, the other one of the shaft sleeve and the fixed seat is provided with an internal thread, the shaft sleeve and the fixed seat are detachably connected, and the external thread is matched with the internal thread.
As a preferred scheme, a second sealing element is arranged on the fixing seat, a second wire passing hole is formed in the second sealing element and communicated with the inside of the stainless steel pipe, the second sealing element covers the upper end of the stainless steel pipe, and the signal wire penetrates through the second wire passing hole and is electrically connected to the control module.
As a preferred scheme, the second sealing element is fixedly connected with the fixing seat through a pressing plate, the pressing plate is provided with a third wire passing hole, and the signal wire sequentially passes through the second wire passing hole and the third wire passing hole and is electrically connected to the control module.
Compared with the prior art, the utility model obvious advantage and beneficial effect have, particularly: the signal tube is arranged in the stainless steel tube, so that the signal tube is protected, ammonia generated by urea at high temperature is prevented from permeating and corroding the signal tube, a product can be used in a high-temperature urea medium for a long time, and the measurement function of the product is ensured;
secondly, through the setting of axle sleeve and connecting piece, be convenient for the nonrust steel pipe respectively with fixing base, concentration detection module between assemble, be assisted with first sealing member and second sealing member, guaranteed the leakproofness, stability and the reliability of being connected between nonrust steel pipe respectively and fixing base, the concentration detection module.
To more clearly illustrate the structural features and effects of the present invention, the following detailed description is given with reference to the accompanying drawings and specific embodiments.
Drawings
FIG. 1 is a schematic structural diagram of an embodiment of the present invention;
FIG. 2 is a schematic view of a portion of FIG. 1 (heating and urea tubes not shown);
FIG. 3 is a partial schematic view of the structure of FIG. 2 (without the plastic base, tube, float and level sensor connections shown);
FIG. 4 is a partial cross-sectional view of FIG. 3;
FIG. 5 is a first partially enlarged schematic view of FIG. 4;
fig. 6 is a second partially enlarged structural view of fig. 4.
The reference numbers illustrate:
10. control module
20. Stainless steel pipe
21. Signal line 22 and electronic connector
30. Concentration detection module 31, upper extension part
32. First wire passing hole 33 and first sealing element mounting groove
40. Connecting piece
41. Through hole 42 and limiting step part
50. Fixing seat 51, internal thread
52. Groove 53, abdication hole
60. Plastic base
71. First seal member
72. Second sealing element 721 and second wire through hole
80. Bushing 81, external thread
90. Pressing plate 91 and third wire passing hole
110. Heating tube
111. First heating pipe 112, second heating pipe
120. Urea pipe
130. Electron tube
131. Buoy 132, level sensor connection.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and the detailed description.
As shown in fig. 1 to 6, an anti-permeation corrosion urea sensor includes a stainless steel tube 20, a concentration detection module 30, a connector 40, a fixing base 50 for connecting with a urea tank, and a control module 10 disposed on the fixing base 50, wherein:
the two ends of the stainless steel tube 20 are respectively connected with the fixing seat 50 and the concentration detection module 30, a signal line 21 is arranged in the stainless steel tube 20, and the concentration detection module 30 is electrically connected to the control module 10 through the signal line 21. In the present embodiment, the signal line 21 is electrically connected to an electronic connector 22, preferably, the electronic connector 22 is an FPC board, and the electronic connector 22 is electrically connected to the concentration detection module 30.
The lower end of the stainless steel pipe 20 is connected with the concentration detection module 30 through a connecting piece 40. Preferably, the lower end of the stainless steel pipe 20 is welded to the connection member 40. Specifically, the connector 40 has a through hole 41 penetrating vertically, and the lower end of the stainless steel pipe 20 extends into the through hole 41 from the upper end of the connector 40; preferably, a limiting step portion 42 is formed on the inner wall of the through hole 41, and the lower end of the stainless steel tube 20 abuts against the limiting step portion 42.
The concentration detection device further comprises a plastic base 60, and the concentration detection module 30 is installed on the plastic base 60 through screws. Preferably, the concentration detection module 30 is an ultrasonic concentration sensor. As shown in fig. 6, the concentration detecting module 30 has an upper extension portion 31, the upper extension portion 31 has a first wire passing hole 32 communicating with the inside of the concentration detecting module 30, the upper extension portion 31 extends into the through hole 41 from the lower end of the connecting member 40, and the upper extension portion 31 is connected to the connecting member 40; the electronic connector 22 is installed in the connector 40, the upper end of the electronic connector 22 extends into the stainless steel tube 20, and the signal line 21 sequentially passes through the through hole 41 and the first line passing hole 32 through the electronic connector 22 to be electrically connected to the concentration detection module 30.
The upper extension 31 is sealingly connected to the connection member 40 by a first seal 71. Preferably, the periphery of the upper extension portion 31 is provided with a first sealing member installation groove 33, and the first sealing member 71 is sleeved on the periphery of the upper extension portion 31 and correspondingly installed in the first sealing member installation groove 33. In the present embodiment, the first sealing member 71 is an O-ring and is provided in two, and correspondingly, the first sealing member mounting groove 33 is also provided in two.
As shown in fig. 5, the stainless steel tube 20 is connected to the fixing base 50 through a bushing 80. In this embodiment, one of the shaft sleeve 80 and the fixing seat 50 has an external thread 81, and the other has an internal thread 51, the shaft sleeve 80 and the fixing seat 50 are detachably connected, and the external thread 81 is matched with the internal thread 51. In this embodiment, the bottom of fixing base 50 is equipped with recess 52 up the concave, the inner wall of recess 52 forms internal thread 51, the periphery of axle sleeve 80 is formed with external screw thread 81, be equipped with second sealing member mounting groove on fixing base 50, second sealing member mounting groove is through stepping down hole 53 intercommunication recess 52, the external diameter of the stainless steel pipe 20 of aperture adaptation of hole 53.
The fixing seat 50 is provided with a second sealing element 72, in this embodiment, the second sealing element 72 is a rubber plug, and may also be another sealing element, which is not limited herein. The second sealing element 72 is provided with a second wire passing hole 721, the second wire passing hole 721 is communicated with the inside of the stainless steel tube 20, the second sealing element 72 is installed in the second sealing element installation groove, the second sealing element 72 covers the upper end of the stainless steel tube 20, the second sealing element 72 is tightly matched and connected with the upper end of the stainless steel tube 20, and the signal wire 21 passes through the second wire passing hole 721 and is electrically connected to the control module 10.
The second sealing element is fixedly connected with the fixing seat 50 through a pressing plate 90, and preferably, the pressing plate 90 is fixedly connected with the fixing seat 50 through a screw. The pressing plate 90 is provided with a third wire through hole 91, and the signal wire 21 sequentially passes through the second wire through hole 721 and the third wire through hole 91 to be electrically connected to the control module 10.
The heating pipe 110 and the urea pipe 120 are further included, and the urea pipe 120 penetrates through the fixing seat 50. The fixing seat 50 is installed on the urea box and plays a role in sealing. An electronic tube 130 is arranged below the fixed seat 50, a float 131 capable of moving up and down is sleeved on the periphery of the electronic tube 130, and a measuring circuit which is conducted by the float 131 at a corresponding position is arranged in the electronic tube 130. The fixed seat 50 is provided with a liquid level sensor joint 132, and the liquid level sensor joint 132 is electrically connected with a measuring circuit.
The heating pipe 110 passes through the fixing seat 50 and is disposed on the plastic base 60. Specifically, the heating pipe 110 includes a first heating pipe 111 and a second heating pipe 112, the first heating pipe 111 is communicated with the second heating pipe 112 and is located above the second heating pipe 112, the first heating pipe 111 is of a linear structure, and the second heating pipe 112 is of a spiral pipe structure. The first heating pipe 111 is attached to the urea pipe 120, preferably in a bundling manner, and the purpose of the attachment or bundling is to improve the heat exchange effect between the first heating pipe 111 and the urea pipe 120 and to achieve faster heating and thawing. Moreover, the first heating pipe 111 may be a straight line structure, or a broken line structure or other linear structures to accommodate the convenience of the heating liquid feeding or the influence of other structures.
Specifically, the second heating pipe 112 is wound around the stainless steel pipe 20, the urea pipe 120 and the electronic tube 130, and the second heating pipe 112 is designed to be a spiral pipe structure, so that the heat exchange area of the spiral pipe structure is large, the space is saved, and the urea can be conveniently and rapidly thawed in the urea pipe 120. Meanwhile, the first heating pipe 111 is designed to be a linear structure and the second heating pipe 112 is designed to be a spiral pipe structure, so that the processing cost and the processing difficulty of the heating pipe 110 can be reduced properly on the premise that the urea solution is smooth to return. If the heating pipe 110 is entirely of a spiral pipe structure, although the heating and thawing capacity of the urea tank can be increased, such a manner may cause adverse effects of complicated structure of the heating pipe 110, extremely high difficulty in manufacturing and molding, and increased cost.
The utility model has the design key points that the signal tube is arranged in the stainless steel tube to protect the signal tube and prevent the urea from generating ammonia gas at high temperature to permeate and corrode the signal tube, so that the product can be used in high-temperature urea medium for a long time and the measurement function of the product is ensured;
secondly, through the setting of axle sleeve and connecting piece, be convenient for the nonrust steel pipe respectively with fixing base, concentration detection module between assemble, be assisted with first sealing member and second sealing member, guaranteed the leakproofness, stability and the reliability of being connected between nonrust steel pipe respectively and fixing base, the concentration detection module.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the technical scope of the present invention, so that any slight modifications, equivalent changes and modifications made by the technical spirit of the present invention to the above embodiments are all within the scope of the technical solution of the present invention.
Claims (10)
1. An anti-permeation corrosion urea sensor, characterized in that: the device comprises a stainless steel pipe, a concentration detection module, a fixed seat used for being connected with a urea box and a control module arranged on the fixed seat;
the stainless steel pipe is characterized in that the two ends of the stainless steel pipe are respectively connected with the fixing seat and the concentration detection module, a signal line is arranged in the stainless steel pipe, and the concentration detection module is electrically connected to the control module through the signal line.
2. The corrosion-resistant urea sensor of claim 1, wherein: the signal line is electrically connected with an electronic connecting piece, and the electronic connecting piece is electrically connected with the concentration detection module.
3. The corrosion-resistant urea sensor of claim 1, wherein: the stainless steel tube concentration detection device is characterized by further comprising a connecting piece, wherein the lower end of the stainless steel tube is connected with a concentration detection module through the connecting piece.
4. The corrosion-resistant urea sensor of claim 3, wherein: the connecting piece is provided with a through hole which is communicated up and down, and the lower end of the stainless steel pipe extends into the through hole from the upper end of the connecting piece;
the concentration detection module is provided with an upper extension part, the upper extension part is provided with a first wire passing hole communicated with the interior of the concentration detection module, the upper extension part extends into the through hole from the lower end of the connecting piece, and the upper extension part is connected with the connecting piece; the signal wire sequentially penetrates through the through hole and the first wire passing hole to be electrically connected with the concentration detection module.
5. The corrosion-resistant urea sensor of claim 4, wherein: the upper extension part is connected with the connecting piece in a sealing mode through a first sealing piece.
6. The corrosion-resistant urea sensor of claim 4, wherein: the inner wall of the through hole is provided with a limiting step part, and the lower end of the stainless steel pipe is abutted against the limiting step part.
7. The corrosion-resistant urea sensor of claim 1, wherein: the stainless steel pipe is connected with the fixed seat through a shaft sleeve.
8. The corrosion-resistant urea sensor of claim 7, wherein: in the shaft sleeve and the fixing seat, one of the shaft sleeve and the fixing seat is provided with an external thread, the other of the shaft sleeve and the fixing seat is provided with an internal thread, the shaft sleeve and the fixing seat are detachably connected, and the external thread is matched with the internal thread.
9. The corrosion-resistant urea sensor of claim 1, wherein: the fixing seat is provided with a second sealing element, a second wire passing hole is formed in the second sealing element and communicated with the inside of the stainless steel pipe, the second sealing element covers the upper end of the stainless steel pipe, and the signal wire penetrates through the second wire passing hole and is electrically connected to the control module.
10. The corrosion-resistant urea sensor of claim 9, wherein: the second sealing element is fixedly connected with the fixing seat through a pressing plate, a third wire passing hole is formed in the pressing plate, and the signal wire sequentially penetrates through the second wire passing hole and the third wire passing hole to be electrically connected with the control module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021149218.0U CN212622477U (en) | 2020-06-19 | 2020-06-19 | Urea sensor of prevention of seepage corrosion |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021149218.0U CN212622477U (en) | 2020-06-19 | 2020-06-19 | Urea sensor of prevention of seepage corrosion |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212622477U true CN212622477U (en) | 2021-02-26 |
Family
ID=74755721
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021149218.0U Active CN212622477U (en) | 2020-06-19 | 2020-06-19 | Urea sensor of prevention of seepage corrosion |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212622477U (en) |
-
2020
- 2020-06-19 CN CN202021149218.0U patent/CN212622477U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102027356B (en) | High temperature and pressure oxidation-reduction potential measuring and monitoring device for hot water systems | |
| CN105452821A (en) | Method for manufacturing a tank with a calibrated sensor | |
| US20110309087A1 (en) | Apparatus for determining a tank fill level, tank for urea/water solution and motor vehicle having a tank | |
| CN212622477U (en) | Urea sensor of prevention of seepage corrosion | |
| US20140150538A1 (en) | Sensor for detecting the quality of a fluid | |
| US20070125663A1 (en) | Liquid-condition detection element and detection sensor | |
| CN112483227A (en) | Be provided with integrated detection device's urea case | |
| CN219038325U (en) | Refrigerated container gas tightness detecting system | |
| CN216050347U (en) | Multipurpose wall-attached temperature sensor simple and convenient to install | |
| CN201731915U (en) | Liquid level detection device | |
| CN201289245Y (en) | External self control liquid level and liquid temperature sensor | |
| CN113687035A (en) | Tail-exhaust hydrogen concentration detection device of fuel cell system | |
| CN221347059U (en) | Urea sensor | |
| CN221002908U (en) | Urea solution detection integrated module and integrated urea sensor | |
| KR101038056B1 (en) | Pressure sensor with temperature-sensing element and mounting structure of the same | |
| CN202471180U (en) | Protective sensor with integrally formed conductive electrode | |
| JP3190469B2 (en) | Fuel tank internal pressure sensor mounting structure | |
| KR101081946B1 (en) | Pressure sensor with a semi-permeable membrane and mounting structure of the same | |
| CN210464609U (en) | Improved floating ball type liquid level meter | |
| CN216202495U (en) | Device for installing temperature sensor on fuel tank for LNG ship | |
| CN210953008U (en) | Plug-in back-flushing differential pressure liquid level transmitter | |
| CN2844863Y (en) | Level sensor for solar water heating engineering | |
| CN215573223U (en) | Sensor for measuring liquid level position in marine fuel tank | |
| CN216846441U (en) | Water level detection device | |
| CN212299460U (en) | Liquid level detection device and water heater |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: Room 101, No. 1, East Ring 3rd Street, Jitiagang, Huangjiang Town, Dongguan City, Guangdong Province, 523000 Patentee after: Guangdong Zhengyang Sensor Technology Co.,Ltd. Address before: No.1, Donghuan 3rd Street, jitigang village, Huangjiang Town, Dongguan City, Guangdong Province 523000 Patentee before: DONGGUAN ZHENGYANG ELECTRONIC MECHANICAL Co.,Ltd. |