CN211344019U - Pressure sensor with double-sealing structure - Google Patents
Pressure sensor with double-sealing structure Download PDFInfo
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- CN211344019U CN211344019U CN201922374780.7U CN201922374780U CN211344019U CN 211344019 U CN211344019 U CN 211344019U CN 201922374780 U CN201922374780 U CN 201922374780U CN 211344019 U CN211344019 U CN 211344019U
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- base
- pressure sensor
- sensor
- terminal surface
- spliced pole
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- 238000007789 sealing Methods 0.000 title claims abstract description 43
- 230000009977 dual effect Effects 0.000 claims abstract 8
- 239000000919 ceramic Substances 0.000 claims description 31
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 13
- 229910052802 copper Inorganic materials 0.000 claims description 13
- 239000010949 copper Substances 0.000 claims description 13
- 238000009434 installation Methods 0.000 claims description 11
- 230000006978 adaptation Effects 0.000 claims description 2
- 210000003141 lower extremity Anatomy 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 239000007788 liquid Substances 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
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- Measuring Fluid Pressure (AREA)
Abstract
The utility model belongs to the technical field of pressure sensor, refer in particular to a pressure sensor with dual containment structure, including base and sensor housing, the mounting hole has been seted up to the up end of base, and the through-hole has been seted up to sensor housing's lower terminal surface, and sensor housing forms a spliced pole along the lower border downwardly extending of through-hole, and the spliced pole passes through external screw thread and internal thread threaded connection with the mounting hole, and sensor housing's lower terminal surface is inconsistent with the up end of base, is provided with sealing washer one between spliced pole and the mounting hole, is provided with sealing washer two between sensor housing and the base. The utility model discloses added between sensor housing and base and established twice seal structure, sealing washer one can effectively prevent high-pressure rivers from the outside seepage in the thread clearance between external screw thread and the internal thread, and sealing washer two can enough play further sealed effect to the outside seepage of high-pressure rivers, can increase the frictional force between sensor housing and the base again, in order to play the effect that prevents not hard up.
Description
The technical field is as follows:
the utility model belongs to the technical field of pressure sensor, refer in particular to a pressure sensor with double containment structure.
Background art:
the ceramic pressure sensor is a sensor for measuring fluid pressure, and the ceramic pressure sensing surface is slightly deformed to change the resistance sintered in the ceramic pressure sensor, so that the pressure is sensed.
At present, the pressure detection of deep well pump generally adopts ceramic pressure sensor to go on, however, because ceramic pressure sensor bears the pressure of different degree in deep well pump working process, leads to being connected between ceramic pressure sensor and the deep well pump to take place not hard up very easily, and then leads to the inside high-pressure rivers of deep well pump to outwards reveal in the joint gap between ceramic pressure sensor and the deep well pump.
The invention content is as follows:
the utility model aims at providing a pressure sensor who has double containment structure, installation be difficult for not hard up and have good leakproofness.
The utility model discloses a realize like this:
the utility model provides a pressure sensor with double containment structure, is provided with the rivers passageway including base and sensor housing in the base, is provided with ceramic pressure sensor in the sensor housing, the mounting hole that is linked together with the rivers passageway is seted up to the up end of base, the through-hole corresponding with ceramic pressure sensor position is seted up to the lower terminal surface of sensor housing, and the sensor housing forms a spliced pole along the lower border downwardly extending of through-hole, and the spliced pole passes through external screw thread and internal thread threaded connection with the mounting hole, and the lower terminal surface of sensor housing is inconsistent with the up end of base, is located to be provided with sealing washer one between the spliced pole of external screw thread and internal thread upside and the mounting hole, is located to be provided with sealing washer two between the up end of the lower terminal surface of spliced pole outlying sensor.
In foretell pressure sensor with double containment structure, the base is the pressure valve upper cover, and the cover has inlayed the copper insert on the mounting hole of pressure valve upper cover, the internal thread sets up on the inner wall of copper insert, the spliced pole passes through the internal thread threaded connection of external screw thread and copper insert, sealing washer one sets up between copper insert and spliced pole.
In the pressure sensor with the double-sealing structure, an annular groove is formed in the lower end face of the sensor shell, and the second sealing ring is arranged in the annular groove.
In the pressure sensor having the double sealing structure described above, it is characterized in that: the sensor shell comprises an upper seat and a base, an installation cavity is formed between the upper seat and the base, the ceramic pressure sensor is fixed in the installation cavity, the through hole and the connecting column are arranged on the base, the lower end face of the base is abutted to the upper end face of the base, and the sealing ring II is arranged between the lower end face of the base and the upper end face of the base.
In the pressure sensor with the double-sealing structure, the upper end surface of the base is provided with the inner cylinder, the lower end surface of the upper seat is provided with the outer cylinder sleeved on the inner cylinder, the mounting cavity is formed between the inner cylinder and the outer cylinder, the lower end surface of the ceramic pressure sensor abuts against the upper end surface of the base, the upper end surface of the ceramic pressure sensor abuts against the lower end surface of the compression washer, and the upper end surface of the compression washer abuts against the lower end surface of the upper seat.
In the pressure sensor with the double-sealing structure, the base extends upwards along the upper edge of the through hole to form the positioning column, and the ceramic pressure sensor is provided with the positioning groove matched with the positioning column.
In the pressure sensor with the double-sealing structure, a third sealing ring is arranged between the positioning groove and the positioning column.
Compared with the prior art, the utility model outstanding advantage is:
the utility model discloses a prevent that being connected between sensor housing and the base is not hard up and liquid leakage, added between sensor housing and base and established twice seal structure, wherein, sealing washer one can effectively prevent high-pressure rivers from outwards leaking in the screw thread clearance between external screw thread and the internal thread, and sealing washer two can enough play further sealed effect to the outside seepage of high-pressure rivers, can increase the frictional force between sensor housing and the base again, in order to play the effect that prevents not hard up.
Description of the drawings:
fig. 1 is a schematic overall sectional view of the present invention.
In the figure: 1. a base; 2. a sensor housing; 3. a water flow channel; 4. a ceramic pressure sensor; 5. a through hole; 6. connecting columns; 7. a first sealing ring; 8. a second sealing ring; 9. a copper insert; 10. an upper seat; 11. a base; 12. an inner cylinder; 13. an outer cylinder; 14. a compression washer; 15. a positioning column; 16. a third sealing ring; 17. and (4) conducting wires.
The specific implementation mode is as follows:
the invention will now be further described with reference to specific embodiments, with reference to fig. 1:
a pressure sensor with a double-sealing structure comprises a base 1 and a sensor shell 2, wherein a water flow channel 3 is arranged in the base 1, a ceramic pressure sensor 4 is arranged in the sensor shell 2, the mounting hole that is linked together with rivers passageway 3 is seted up to the up end of base 1, the through-hole 5 corresponding with ceramic pressure sensor 4 positions is seted up to the lower terminal surface of sensor housing 2, sensor housing 2 forms a spliced pole 6 along the lower border downwardly extending of through-hole 5, spliced pole 6 passes through external screw thread and internal thread threaded connection with the mounting hole, and the lower terminal surface of sensor housing 2 offsets with the up end of base 1, be located and be provided with sealing washer one 7 between spliced pole 6 and the mounting hole of external screw thread and internal thread upside, be located and be provided with sealing washer two 8 between the up end of spliced pole 6 outlying sensor housing 2's the lower terminal surface and base 1.
The utility model discloses a prevent that being connected between sensor housing 2 and the base 1 is not hard up and liquid leakage, added in the connection structure between sensor housing 2 and the base 1 and established twice seal structure, wherein, sealing washer one 7 can effectively prevent high-pressure rivers from outwards leaking in the screw thread clearance between external screw thread and the internal thread, sealing washer two 8 can enough play further sealed effect to the outside seepage of high-pressure rivers, can increase the frictional force between sensor housing 2 and the base 1 again, in order to play the effect that prevents not hard up.
Furthermore, in this embodiment, the pressure sensor is applied to a deep well pump, so that the base 1 is a pressure valve upper cover, meanwhile, in order to enhance the load strength of the pressure valve upper cover, a copper insert 9 is sleeved on a mounting hole of the pressure valve upper cover, the internal thread is arranged on the inner wall of the copper insert 9, the connecting column 6 is in threaded connection with the internal thread of the copper insert 9 through the external thread, and the first sealing ring 7 is arranged between the copper insert 9 and the connecting column 6.
In order to improve the installation stability of the second sealing ring 8, an annular groove is formed in the lower end face of the sensor shell 2, and the second sealing ring 8 is arranged in the annular groove.
In this embodiment, in order to facilitate the dismounting operation of the post-maintenance, the specific structure of the sensor housing 2 is: sensor housing 2 forms an installation cavity including upper seat 10 and base 11 between upper seat 10 and the base 11, ceramic pressure sensor 4 fixes in the installation cavity, through-hole 5 and spliced pole 6 set up on base 11, and the lower terminal surface of base 11 is inconsistent with the up end of base 1, and sealing washer two 8 sets up between the lower terminal surface of base 11 and the up end of base 1. Be split type structure between seat 10 and the base 11 promptly, in the later stage maintenance process, need not to dismantle whole sensor housing 2 from base 1 and get off, only need to dismantle the separation just can overhaul ceramic pressure sensor 4 with seat 10 from base 11.
Furthermore, the specific forming structure of the installation cavity is as follows: an inner cylinder 12 is arranged on the upper end face of the base 11, an outer cylinder 13 sleeved on the inner cylinder 12 is arranged on the lower end face of the upper seat 10, and the installation cavity is formed between the inner cylinder 12 and the outer cylinder 13; in order to stably mount the ceramic pressure sensor 4 in the mounting cavity, the lower end surface of the ceramic pressure sensor 4 abuts against the upper end surface of the base 11, the upper end surface abuts against the lower end surface of the pressure washer 14, and the upper end surface of the pressure washer 14 abuts against the lower end surface of the upper seat 10.
And, base 11 upwards extends along the last border of through-hole 5 and forms reference column 15, is provided with the constant head tank with reference column 15 looks adaptation on the ceramic pressure sensor 4. Namely, the ceramic pressure sensor 4 is inserted into the positioning column 15 through the positioning groove, the bottom surface of the positioning groove is the sensing surface of the ceramic pressure sensor 4, the upper end surface of the ceramic pressure sensor 4 is the lead surface, and the lead surface penetrates out of the upper seat 10 through the lead 17 and is electrically connected with an external circuit board.
The working principle of the pressure sensor is as follows: high-pressure rivers in the deep water pump pass through rivers passageway 3, through-hole 5 to the constant head tank in proper order, bear the pressure shock of high-pressure rivers by ceramic pressure sensor 4's response face for slight deformation takes place for ceramic pressure sensor 4's response face, and then produces weak circuit and transmit on the circuit board, judges this moment the work water pressure of deep water pump.
Furthermore, in order to prevent the high-pressure water flow from flowing into the lead side of the ceramic pressure sensor 4, a third sealing ring 16 is disposed between the positioning groove and the positioning column 15.
The above-mentioned embodiment is only one of the preferred embodiments of the present invention, and the scope of the present invention is not limited thereto, so: all equivalent changes made according to the shape, structure and principle of the utility model are covered within the protection scope of the utility model.
Claims (7)
1. The utility model provides a pressure sensor with dual containment structure, is provided with rivers passageway (3) including base (1) and sensor housing (2) in base (1), is provided with ceramic pressure sensor (4) in sensor housing (2), its characterized in that: the utility model discloses a sensor, including base (1), sensor casing (2), the last up end of base (1) is seted up the mounting hole that is linked together with rivers passageway (3), the lower terminal surface of sensor casing (2) is seted up through-hole (5) corresponding with ceramic pressure sensor (4) position, sensor casing (2) follow the lower limb downwardly extending of through-hole (5) and form a spliced pole (6), spliced pole (6) pass through external screw thread and internal thread threaded connection with the mounting hole, and the lower terminal surface of sensor casing (2) is inconsistent with the up end of base (1), be located and be provided with between spliced pole (6) and the mounting hole of external screw thread upside and sealing washer (7), be located and be provided with between the lower terminal surface of spliced pole (6) outlying sensor casing (2) and the.
2. A pressure sensor having a dual sealing structure according to claim 1, wherein: base (1) is the pressure valve upper cover, and the cover has inlayed copper insert (9) on the mounting hole of pressure valve upper cover, the internal thread sets up on the inner wall of copper insert (9), spliced pole (6) are through the internal thread threaded connection of external screw thread with copper insert (9), sealing washer (7) set up between copper insert (9) and spliced pole (6).
3. A pressure sensor having a dual sealing structure according to claim 1, wherein: an annular groove is formed in the lower end face of the sensor shell (2), and the second sealing ring (8) is arranged in the annular groove.
4. A pressure sensor having a dual sealing structure according to claim 1, 2 or 3, wherein: sensor housing (2) forms an installation cavity including upper seat (10) and base (11) between upper seat (10) and base (11), pottery pressure sensor (4) are fixed in the installation cavity, through-hole (5) and spliced pole (6) set up on base (11), and the lower terminal surface of base (11) offsets with the up end of base (1), and sealing washer two (8) set up between the up end of the lower terminal surface of base (11) and base (1).
5. The pressure sensor with a dual sealing structure according to claim 4, wherein: the upper end face of base (11) is provided with interior barrel (12), and the lower terminal surface of upper seat (10) is provided with outer barrel (13) of suit on interior barrel (12), forms between interior barrel (12) and outer barrel (13) the installation cavity, the lower terminal surface of ceramic pressure sensor (4) is supported with the up end of base (11) and is leaned on, the up end supports with the lower terminal surface of pressure washer (14) and leans on, and the up end of pressure washer (14) supports with the lower terminal surface of upper seat (10) and leans on.
6. The pressure sensor with a dual sealing structure according to claim 4, wherein: base (11) are followed the last border of through-hole (5) and are upwards extended and form reference column (15), are provided with the constant head tank with reference column (15) looks adaptation on ceramic pressure sensor (4).
7. The pressure sensor with a dual sealing structure according to claim 6, wherein: and a third sealing ring (16) is arranged between the positioning groove and the positioning column (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922374780.7U CN211344019U (en) | 2019-12-25 | 2019-12-25 | Pressure sensor with double-sealing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922374780.7U CN211344019U (en) | 2019-12-25 | 2019-12-25 | Pressure sensor with double-sealing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211344019U true CN211344019U (en) | 2020-08-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922374780.7U Active CN211344019U (en) | 2019-12-25 | 2019-12-25 | Pressure sensor with double-sealing structure |
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| Country | Link |
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| CN (1) | CN211344019U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113232595A (en) * | 2021-04-06 | 2021-08-10 | 深圳元戎启行科技有限公司 | Sealing structure, laser radar device, and unmanned device |
| CN113465812A (en) * | 2021-07-27 | 2021-10-01 | 浙江大元泵业股份有限公司 | Inductance type water pressure sensor |
-
2019
- 2019-12-25 CN CN201922374780.7U patent/CN211344019U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113232595A (en) * | 2021-04-06 | 2021-08-10 | 深圳元戎启行科技有限公司 | Sealing structure, laser radar device, and unmanned device |
| CN113465812A (en) * | 2021-07-27 | 2021-10-01 | 浙江大元泵业股份有限公司 | Inductance type water pressure sensor |
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