CN215004020U - Tail gas temperature sensor - Google Patents
Tail gas temperature sensor Download PDFInfo
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- CN215004020U CN215004020U CN202121449372.4U CN202121449372U CN215004020U CN 215004020 U CN215004020 U CN 215004020U CN 202121449372 U CN202121449372 U CN 202121449372U CN 215004020 U CN215004020 U CN 215004020U
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Abstract
The utility model discloses a tail gas temperature sensor belongs to automobile engine technical field. The temperature component comprises a PIN needle and a temperature chip, the lower end of the PIN needle is connected with the temperature chip, and the outer side of the connection part of the PIN needle and the temperature chip is subjected to injection molding to form a plastic sleeve; stainless steel temperature package subassembly includes stainless steel nut head, stainless steel gauge rod, heat conduction silicone grease, O type circle, in stainless steel temperature package subassembly was located to the lower part of temperature subassembly, the temperature chip submergence was in heat conduction silicone grease, plastics external member and O type circle butt. The stainless steel temperature bag assembly consisting of the stainless steel detection rod and the stainless steel nut is adopted, so that the corrosion resistance of the tail gas temperature sensor is enhanced, and the response speed during measurement is improved; the stainless steel temperature package component is formed by assembling a stainless steel detection rod and a stainless steel nut, so that the detection length can be adjusted, and the application range is expanded.
Description
Technical Field
The utility model relates to a tail gas temperature sensor belongs to automobile engine technical field.
Background
In the prior art, the automobile exhaust temperature sensor adopts copper as a protective shell material, but the copper is active per se, and the exhaust corrosion resistance is not ideal; because the copper protective shell adopts an integral machining process and is limited by the machining process, the shell wall is inevitably thicker, the heat transfer of tail gas temperature is influenced, the temperature response characteristic of the sensor is poorer, the detection part of the sensor cannot obtain larger length, and the installation environment has larger limitation; the internal electrical connection is usually made by soldering process, and the solder is easy to melt and open under high temperature condition.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the technical problem that will solve lies in: the tail gas temperature sensor solves the problems of poor corrosion resistance, low response speed and narrow application range in the prior art.
The utility model discloses the technical problem that will solve takes following technical scheme to realize:
an exhaust gas temperature sensor comprises a temperature component and a stainless steel temperature package component,
the temperature component comprises a PIN needle and a temperature chip, the lower end of the PIN needle is connected with the temperature chip, and a plastic sleeve is formed by injection molding on the outer side of a connecting part of the PIN needle and the temperature chip;
the stainless steel thermal bulb component comprises a stainless steel nut head, a stainless steel detection rod, heat-conducting silicone grease and an O-shaped ring, wherein a step is arranged at the upper part of the inner side of the stainless steel nut head, the O-shaped ring is arranged at the step, a gasket groove is arranged at the lower part of the outer side of the stainless steel nut head, a gasket is arranged in the gasket groove, the top of the stainless steel detection rod is provided with an opening, a detection head is arranged at the bottom of the stainless steel detection rod and is sealed, the detection head is filled with the heat-conducting silicone grease, and the bottom end of the stainless steel nut head is connected with the opening end of the stainless steel detection rod;
the lower part of the temperature assembly is arranged in the stainless steel temperature bag assembly, the temperature chip is immersed in the heat-conducting silicone grease, and the plastic sleeve is abutted against the O-shaped ring.
Preferably, the top of the plastic sleeve is provided with a connector, and the upper end of the PIN needle is exposed in the connecting cavity.
Preferably, the joint of the temperature assembly and the stainless steel temperature pack assembly is fixed through crimping.
The utility model has the advantages that:
(1) the corrosion resistance of the tail gas temperature sensor is enhanced by adopting the stainless steel temperature bag assembly consisting of the stainless steel detection rod and the stainless steel nut, the wall of the stainless steel detection rod is thin and uniform, and the response speed in measurement is improved;
(2) the response speed of tail gas temperature measurement is further improved by filling heat-conducting silicone grease in the stainless steel probe rod;
(3) the stainless steel temperature package component is formed by assembling a stainless steel detection rod and a stainless steel nut, so that the detection length can be adjusted, and the application range is expanded.
Drawings
Fig. 1 is a top view of the present invention.
Fig. 2 is a sectional view taken along line a-a of fig. 1.
Fig. 3 is a sectional view taken along line B-B of fig. 2.
In the figure: 11. a PIN needle; 12. a temperature chip; 13. a plastic sleeve; 14. a connector; 21. a stainless steel nut head; 22. a stainless steel probe rod; 23. heat-conducting silicone grease; 24. an O-shaped ring; 25. a gasket.
Detailed Description
In order to make the technical means, the creation features, the achievement purposes and the functions of the present invention easy to understand and understand, the present invention is further explained by combining the following specific drawings.
The first embodiment is as follows:
referring to fig. 1-3, the present embodiment provides an exhaust gas temperature sensor, which includes a temperature component and a stainless steel thermal pack component.
The temperature subassembly includes PIN needle 11, temperature chip 12, and the lower extreme and the temperature chip 12 of PIN needle 11 are connected through resistance welding technology, promote the reliability that tail gas temperature sensor connects under high temperature environment, and the connecting portion outside of PIN needle 11 and temperature chip 12 is moulded plastics and is formed plastics external member 13.
Stainless steel thermal bulb subassembly includes stainless steel nut head 21, stainless steel probe rod 22, heat conduction silicone grease 23, O type circle 24, the inboard upper portion of stainless steel nut head 21 is equipped with the step, and step department sets up O type circle 24, the lower part in the stainless steel nut head 21 outside is equipped with the gasket groove, and the gasket inslot is equipped with packing ring 25, the top of stainless steel probe rod 22 is the opening, and the bottom of stainless steel probe rod 22 is the detecting head, and the detecting head is sealed, is full of heat conduction silicone grease 23 in the detecting head, and stainless steel probe rod 22 adopts stainless steel stretch forming process, and stainless steel probe rod 22 is thin walled and even, promotes tail gas temperature measurement response speed, through at the inside filling heat conduction silicone grease 23 of detecting head, further improves tail gas temperature measurement response speed. The bottom of the stainless steel nut head 21 is connected with the open end of the stainless steel detecting rod 22 through a laser welding process, and the stainless steel temperature package component is made of stainless steel, so that the tail gas temperature sensor has better tail gas corrosion resistance.
The lower part of the temperature assembly is arranged in the stainless steel temperature package assembly, the temperature chip 12 is immersed in the heat-conducting silicone grease 23, the plastic sleeve 13 is abutted to the O-shaped ring 24, the O-shaped ring 24 is made of rubber, and therefore the sealing performance is improved, and the whole protection capacity is improved.
Example two:
referring to fig. 1-3, the present embodiment provides an exhaust gas temperature sensor, which includes a temperature component and a stainless steel thermal pack component. The temperature subassembly includes PIN needle 11, temperature chip 12, and the lower extreme and the temperature chip 12 of PIN needle 11 are connected through resistance welding technology, promote the reliability that tail gas temperature sensor connects under high temperature environment, and the connecting portion outside of PIN needle 11 and temperature chip 12 is moulded plastics and is formed plastics external member 13.
The top of the plastic sleeve 13 is provided with a connector 14, and the upper end of the PIN 11 is exposed in the connecting cavity. Form the protection to PIN needle 11 through connecting the chamber, avoid PIN needle 11 directly to expose outside, prevent that PIN needle 11 from taking place to buckle because of the collision and warping, lead to the unable normal connection of PIN needle 11 to use, cause whole sensor to scrap. The other structure is the same as the first embodiment.
Example three:
referring to fig. 1-3, the present embodiment provides an exhaust gas temperature sensor, which includes a temperature component and a stainless steel thermal pack component.
The junction of temperature subassembly and stainless steel temperature package subassembly is fixed through the crimping, avoids contacting high temperature in the assembling process, leads to the overheated quilt of temperature chip 12 to burn out. The other structure is the same as the first embodiment.
The utility model provides a pair of tail gas temperature sensor's equipment mode as follows:
firstly, a PIN 11 is connected with a temperature chip 12 through a resistance welding process; then, forming a plastic sleeve 13 outside the PIN 11 and the temperature chip 12 through an injection molding process, thereby forming a temperature component; then, the bottom end of the stainless steel nut head 21 is connected with the top end of the stainless steel detection rod 22 through a laser welding process; then, the O-ring 24 is mounted at the step inside the stainless steel nut head 21; then, filling heat-conducting silicone grease 23 in the probe to form a stainless steel temperature bag; then, inserting one end of the temperature component with the temperature chip 12 into a stainless steel detection rod 22, and immersing the temperature chip 12 in heat-conducting silicone grease 23; then, the lower end of the plastic sleeve 13 is abutted against the O-shaped ring 24, and the plastic sleeve 13 and the top end of the stainless steel nut head 21 are fixed through a compression joint process; finally, the washer 25 is press-fitted into the washer groove outside the stainless steel nut head 21.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the above-described embodiments, and that various changes and modifications may be made without departing from the spirit and scope of the invention, and such changes and modifications are intended to be included within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (3)
1. A tail gas temperature sensor is characterized by comprising a temperature component and a stainless steel temperature pack component,
the temperature component comprises a PIN needle and a temperature chip, the lower end of the PIN needle is connected with the temperature chip, and a plastic sleeve is formed by injection molding on the outer side of a connecting part of the PIN needle and the temperature chip;
the stainless steel thermal bulb component comprises a stainless steel nut head, a stainless steel detection rod, heat-conducting silicone grease and an O-shaped ring, wherein a step is arranged at the upper part of the inner side of the stainless steel nut head, the O-shaped ring is arranged at the step, a gasket groove is arranged at the lower part of the outer side of the stainless steel nut head, a gasket is arranged in the gasket groove, the top of the stainless steel detection rod is provided with an opening, a detection head is arranged at the bottom of the stainless steel detection rod and is sealed, the detection head is filled with the heat-conducting silicone grease, and the bottom end of the stainless steel nut head is connected with the opening end of the stainless steel detection rod;
the lower part of the temperature assembly is arranged in the stainless steel temperature bag assembly, the temperature chip is immersed in the heat-conducting silicone grease, and the plastic sleeve is abutted against the O-shaped ring.
2. The exhaust gas temperature sensor according to claim 1, wherein the plastic sleeve is provided at a top thereof with a connector, and an upper end of the PIN is exposed to the connection cavity.
3. The exhaust gas temperature sensor according to claim 1, wherein the joint of the temperature component and the stainless steel temperature pack component is fixed by crimping.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121449372.4U CN215004020U (en) | 2021-06-28 | 2021-06-28 | Tail gas temperature sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121449372.4U CN215004020U (en) | 2021-06-28 | 2021-06-28 | Tail gas temperature sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215004020U true CN215004020U (en) | 2021-12-03 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121449372.4U Active CN215004020U (en) | 2021-06-28 | 2021-06-28 | Tail gas temperature sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215004020U (en) |
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2021
- 2021-06-28 CN CN202121449372.4U patent/CN215004020U/en active Active
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