CN214887436U - Fuel pressure sensor - Google Patents
Fuel pressure sensor Download PDFInfo
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- CN214887436U CN214887436U CN202121669263.3U CN202121669263U CN214887436U CN 214887436 U CN214887436 U CN 214887436U CN 202121669263 U CN202121669263 U CN 202121669263U CN 214887436 U CN214887436 U CN 214887436U
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- shell
- pressure sensor
- fuel
- fuel pressure
- sealing
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Abstract
The utility model discloses a fuel pressure sensor, which comprises a shell, a connecting structure and a detection structure; the upper end of the shell is provided with a sealing structure; the connecting structure is positioned at the lower end of the shell and comprises a connecting threaded head, the upper end of the connecting threaded head is fixedly connected with the shell, and an anti-freezing structure is arranged inside the connecting threaded head and positioned on the outer side of the oil inlet; the advantages are that: through the existence of anti-freezing structure, not only can reduce the inside fuel's of inlet port heat exchange efficiency, thereby avoid freezing of the inside fuel easy emergence of inlet port, and can use with the cooperation of outside exhaust emission structure and realize the inside fuel heating of inlet port, thereby further avoid the inside fuel of inlet port to freeze, thereby effectively avoid the inlet port fuel to freeze the harmful effects that leads to the fact the pressure measurement component, fuel pressure sensor's normal work has effectively been guaranteed, simultaneously the effectual utilization efficiency who improves the resource, be convenient for the popularization and the use of product.
Description
Technical Field
The utility model relates to a detect technical field, concretely relates to fuel pressure sensor.
Background
The fuel pressure sensor is also called as a fuel pressure regulator and is used for controlling the fuel pressure in an oil way and keeping the constant fuel supply pressure of a fuel injector, after the fuel pressure sensor is communicated with a fuel delivery pipeline, fuel enters the inside of the fuel pressure sensor to be contacted with a pressure detection element inside the fuel pressure sensor, and then the pressure detection of the fuel is realized, however, the fuel inside an oil inlet hole of the fuel pressure sensor is easy to freeze under the environment with lower temperature, so that the fuel pressure sensor cannot detect the fuel pressure, in addition, the freeze of the fuel causes the damage of the pressure detection element, and the fuel pressure sensor cannot normally work.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a fuel pressure sensor in order to solve above-mentioned problem, have that thermal insulation performance is good, avoid the fuel to freeze advantage such as, see the explanation below for details.
In order to achieve the above purpose, the utility model provides a following technical scheme:
the utility model provides a fuel pressure sensor, which comprises a shell, a connecting structure and a detection structure;
the upper end of the shell is provided with a sealing structure;
the connecting structure is positioned at the lower end of the shell and comprises a connecting threaded head, the upper end of the connecting threaded head is fixedly connected with the shell, and an anti-freezing structure is arranged inside the connecting threaded head and positioned on the outer side of the oil inlet;
the detection structure is located inside the housing.
Preferably, the sealing structure comprises a sealing cover, a sealing bulge is arranged at the lower end of the sealing cover, and the sealing bulge is matched with the inside of the shell to ensure the sealing of the fuel pressure sensor.
Preferably, an oil inlet hole is formed in the middle of the connecting threaded head and communicated with the inside of the shell, so that fuel oil can normally enter the inside of the fuel oil pressure sensor.
Preferably, the anti-freezing structure comprises a first circulating air cavity and a second circulating air cavity which are symmetrically distributed, the lower ends of the first circulating air cavity and the second circulating air cavity are communicated through two connecting channels, an air inlet hole is formed in the upper end of the first circulating air cavity, and an air outlet hole is formed in the upper end of the second circulating air cavity, so that heat preservation of fuel entering the fuel pressure sensor is achieved, and freezing of the fuel is avoided.
Preferably, the detection structure comprises a PCB, the lower end edge of the PCB is provided with uniformly distributed fixing columns, the lower end of each fixing column is fixedly connected with the shell, the upper end of each fixing column is connected with the PCB through a screw, the lower end face of the PCB is provided with a pressure detection element, a sealing gasket is arranged between the pressure detection element and the inner bottom face of the shell, and normal operation of detection work of the fuel pressure sensor is guaranteed.
Preferably, the inside of the shell is provided with an installation groove corresponding to the sealing gasket, and the sealing gasket and the installation groove are installed in a matched mode, so that the sealing gasket is conveniently installed, and the sealing performance of the upper end of the oil inlet hole is guaranteed.
Preferably, the middle part of the sealing washer corresponds to the oil inlet hole, the thickness of the sealing washer is larger than the distance between the bottom surface in the mounting groove and the pressure detection element, the sealing performance of the sealing washer is guaranteed, fuel can normally contact with the pressure detection element, and normal fuel pressure detection is guaranteed.
The beneficial effects of the utility model reside in that:
possess the structure of preventing frostbite, existence through the structure of preventing frostbite, not only can reduce the inside fuel heat exchange efficiency of inlet port, thereby avoid freezing of the inside fuel easy emergence of inlet port, and can use the realization to the inside fuel heating of inlet port with the cooperation of outside exhaust emission structure, thereby further avoid the inside fuel of inlet port to freeze, thereby effectively avoid the inlet port fuel to freeze the harmful effects that leads to the fact the pressure measurement component, fuel pressure sensor's normal work has effectively been guaranteed, simultaneously the effectual utilization efficiency that improves the resource, be convenient for popularization and use of product.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a front view of the present invention;
fig. 2 is a schematic perspective view of fig. 1 according to the present invention;
fig. 3 is a schematic sectional view of the perspective front view of fig. 1 according to the present invention;
fig. 4 is a schematic cross-sectional view of the perspective side view of fig. 1 according to the present invention.
The reference numerals are explained below:
1. a housing; 2. a sealing structure; 21. a sealing cover; 22. sealing the protrusion; 3. a connecting structure; 31. an air inlet; 32. a first circulating air cavity; 33. a connecting channel; 34. a second circulating air cavity; 35. an air outlet; 36. connecting a threaded head; 4. detecting the structure; 41. a PCB board; 42. a screw; 43. a pressure detecting element; 44. fixing a column; 5. a sealing gasket; 6. an oil inlet hole.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be described in detail below. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
Referring to fig. 1-4, the present invention provides a fuel pressure sensor, which includes a housing 1, a connecting structure 3 and a detecting structure 4; the upper end of the shell 1 is provided with a sealing structure 2, the sealing structure 2 comprises a sealing cover 21, the lower end of the sealing cover 21 is provided with a sealing bulge 22, and the sealing bulge 22 is matched with the inside of the shell 1 to ensure the sealing of the fuel pressure sensor; the connecting structure 3 is located at the lower end of the shell 1, the connecting structure 3 comprises a connecting threaded head 36, the upper end of the connecting threaded head 36 is fixedly connected with the shell 1, an oil inlet hole 6 is formed in the middle of the connecting threaded head 36, the oil inlet hole 6 is communicated with the inside of the shell 1 to ensure that fuel oil normally enters the inside of the fuel oil pressure sensor, an anti-freezing structure is arranged inside the connecting threaded head 36 and located on the outer side of the oil inlet hole 6 and comprises a first circulating air cavity 32 and a second circulating air cavity 34 which are symmetrically distributed, the lower ends of the first circulating air cavity 32 and the second circulating air cavity 34 are communicated through two connecting channels 33, an air inlet 31 is formed in the upper end of the first circulating air cavity 32, and an air outlet 35 is formed in the upper end of the second circulating air cavity 34 to realize heat preservation of the fuel oil entering the fuel oil pressure sensor and avoid icing of the fuel oil pressure sensor; the detection structure 4 is positioned inside the shell 1, the detection structure 4 comprises a PCB (printed Circuit Board) 41, the lower end edge of the PCB 41 is provided with uniformly distributed fixed columns 44, the lower ends of the fixed columns 44 are fixedly connected with the shell 1, the upper ends of the fixed columns 44 are connected with the PCB 41 through screws 42, the lower end face of the PCB 41 is provided with a pressure detection element 43, a sealing gasket 5 is arranged between the pressure detection element 43 and the inner bottom face of the shell 1, the normal operation of the detection work of the fuel pressure sensor is ensured, the inside of the shell 1 is provided with a mounting groove corresponding to the sealing gasket 5, the sealing gasket 5 is matched with the mounting groove, the mounting of the sealing gasket 5 is convenient to realize, the sealing performance of the upper end of the oil inlet 6 is ensured, the middle part of the sealing gasket 5 corresponds to the oil inlet 6, the thickness of the sealing gasket 5 is larger than the distance from the inner bottom face of the mounting groove to the pressure detection element 43, and the sealing performance of the sealing gasket 5 is ensured, the fuel can be ensured to normally contact the pressure detection element 43, and the normal operation of fuel pressure detection is ensured.
In an embodiment of the present invention, the fuel pressure sensor with the above structure is adopted, the detecting structure 4 and the sealing washer 5 are installed first, the fuel pressure sensor is sealed by the sealing structure 2, the connection between the fuel pressure sensor and the oil pipeline is realized by the connecting structure 3, the fuel sequentially passes through the oil inlet hole 6, the middle part of the sealing washer 5, and finally contacts with the pressure detecting element 43, the pressure detecting element 43 works to realize the operation of detecting the pressure of the fuel by the fuel pressure sensor, in this process, the air inlet hole 31 is connected with the external exhaust gas pipeline, the exhaust gas sequentially enters the air inlet hole 31, the first circulating air cavity 32, the connecting channel 33, the second circulating air cavity 34, and finally is discharged from the air outlet hole 35, and then the corresponding external air pipeline is connected with the external exhaust gas pipeline, the temperature of the combustion exhaust gas can effectively heat the fuel, thereby avoid getting into the inside fuel of fuel pressure sensor and freeze, guarantee fuel pressure sensor's normal work, even in the time of not carrying out the work in addition, the existence of anti-freezing structure also can reduce the inside fuel of inlet port 6 and the outside heat exchange efficiency to alleviate the inside fuel speed that freezes of inlet port 6.
It should be noted that, in the present invention, the operation of the pressure detecting element 43 is controlled by the controller on the PCB 41, and the controller controls the operation of the pressure detecting element 43 by adopting the prior art;
the utility model discloses well fixed connection adopts welded connected mode.
The fuel pressure sensor of the embodiment has the following advantages:
possess the structure of preventing frostbite, existence through the structure of preventing frostbite, not only can reduce the inside fuel heat exchange efficiency of inlet port 6, thereby avoid freezing of the inside fuel easy emergence of inlet port 6, and can use the realization to the inside fuel heating of inlet port 6 with the cooperation of outside exhaust emission structure, thereby further avoid the inside fuel of inlet port 6 to freeze, thereby effectively avoid 6 fuel of inlet port to freeze the harmful effects that cause pressure measurement element 43, fuel pressure sensor's normal work has effectively been guaranteed, simultaneously effectual utilization efficiency who improves the resource, be convenient for the popularization and the use of product.
The above embodiments are only specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think of changes or substitutions within the technical scope of the present invention, and all should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (7)
1. A fuel pressure sensor, characterized by: comprises a shell (1), a connecting structure (3) and a detection structure (4);
the upper end of the shell (1) is provided with a sealing structure (2);
the connecting structure (3) is positioned at the lower end of the shell (1), the connecting structure (3) comprises a connecting threaded head (36), the upper end of the connecting threaded head (36) is fixedly connected with the shell (1), and an anti-freezing structure is arranged inside the connecting threaded head (36) and positioned on the outer side of the oil inlet hole (6);
the detection structure (4) is located inside the housing (1).
2. The fuel pressure sensor according to claim 1, wherein: the sealing structure (2) comprises a sealing cover (21), a sealing bulge (22) is arranged at the lower end of the sealing cover (21), and the sealing bulge (22) is installed in a matched mode with the inside of the shell (1).
3. The fuel pressure sensor according to claim 1, wherein: the middle part of the connecting threaded head (36) is provided with an oil inlet hole (6), and the oil inlet hole (6) is communicated with the inside of the shell (1).
4. The fuel pressure sensor according to claim 1, wherein: the anti-freezing structure comprises a first circulating air cavity (32) and a second circulating air cavity (34) which are symmetrically distributed, the lower ends of the first circulating air cavity (32) and the second circulating air cavity (34) are communicated through two connecting channels (33), an air inlet hole (31) is formed in the upper end of the first circulating air cavity (32), and an air outlet hole (35) is formed in the upper end of the second circulating air cavity (34).
5. The fuel pressure sensor according to claim 1, wherein: the detection structure (4) comprises a PCB (printed circuit board) (41), wherein the lower end edge of the PCB (41) is provided with uniformly distributed fixing columns (44), the lower end of each fixing column (44) is fixedly connected with the shell (1), the upper ends of the fixing columns (44) are connected with the PCB (41) through screws (42), the lower end face of the PCB (41) is provided with a pressure detection element (43), and a sealing gasket (5) is arranged between the pressure detection element (43) and the inner bottom face of the shell (1).
6. The fuel pressure sensor according to claim 1, wherein: the inside of casing (1) is equipped with the mounting groove that corresponds with seal ring (5), seal ring (5) and mounting groove cooperation installation.
7. The fuel pressure sensor according to claim 5, wherein: the middle part of the sealing washer (5) corresponds to the oil inlet hole (6), and the thickness of the sealing washer (5) is larger than the distance from the bottom surface in the mounting groove to the pressure detection element (43).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121669263.3U CN214887436U (en) | 2021-07-22 | 2021-07-22 | Fuel pressure sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121669263.3U CN214887436U (en) | 2021-07-22 | 2021-07-22 | Fuel pressure sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214887436U true CN214887436U (en) | 2021-11-26 |
Family
ID=78927120
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121669263.3U Active CN214887436U (en) | 2021-07-22 | 2021-07-22 | Fuel pressure sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214887436U (en) |
-
2021
- 2021-07-22 CN CN202121669263.3U patent/CN214887436U/en active Active
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