CN217155655U

CN217155655U - Oil-immersed pressure sensor

Info

Publication number: CN217155655U
Application number: CN202220588980.1U
Authority: CN
Inventors: 刘仕奇; 刘飞
Original assignee: Bengbu Guangya Machinery Technology Co ltd
Current assignee: Bengbu Guangya Machinery Technology Co ltd
Priority date: 2022-03-17
Filing date: 2022-03-17
Publication date: 2022-08-09
Anticipated expiration: 2032-03-17

Abstract

The utility model discloses an oil-immersed pressure sensor, in particular to the technical field of pressure sensors, most of the existing pressure sensors detect pressure through air, which not only can accelerate the aging of the pressure sensor, but also can lead to inaccurate result due to impurities in the air, thereby affecting the progress of related work, comprising a shell, wherein one end of a sealing groove is provided with a detection groove, the inside of the detection groove is provided with an oil storage bag, an annular plate is fixedly arranged at the opening of the oil storage bag, a circuit board is movably arranged in the sealing groove, one side of the circuit board close to the oil storage bag is fixedly provided with a sensor body, one side of the circuit board far away from the sensor body is fixedly provided with a lead, the annular plate is clamped in the sealing groove, the oil storage bag is inserted in the detection groove, then liquid oil is filled in the oil storage bag, and then the circuit board is clamped in the sealing groove, and the sensor body is immersed in the liquid oil, so that the purpose of accuracy is achieved.

Description

Oil-immersed pressure sensor

Technical Field

The utility model relates to a pressure sensor technical field specifically is an oil-immersed pressure sensor.

Background

A pressure sensor is a device or apparatus that senses a pressure signal and converts the pressure signal into a usable output electrical signal according to a certain rule. The pressure sensor is the most common sensor in industrial practice, is widely applied to various industrial automatic control environments, and relates to a plurality of industries such as water conservancy and hydropower, railway traffic, intelligent buildings, production automatic control, aerospace, military industry, petrochemical industry, oil wells, electric power, ships, machine tools, pipelines and the like.

1. Most of the existing pressure sensors detect pressure through air, so that the aging of the pressure sensors is accelerated, and the condition of inaccurate result caused by impurities in the air can be caused, thereby affecting the implementation of related work;

2. the circuit board of the existing pressure sensor is mostly exposed to air for the convenience of heat dissipation, so that the circuit board is accelerated to be oxidized, the service life of the pressure sensor is shortened, and therefore the oil-immersed pressure sensor is provided for solving the problems.

SUMMERY OF THE UTILITY MODEL

The technique that exists to the aforesaid is not enough, the utility model aims at providing an oily formula pressure sensor to solve the problem that provides in the above-mentioned background art.

In order to solve the technical problem, the utility model adopts the following technical scheme: the utility model provides an oil-immersed pressure sensor, which comprises a shell, wherein one end of the shell is provided with a sealing groove, one end of the sealing groove is provided with a detection groove, one end of the shell, which is far away from the sealing groove, is provided with an installation part, and the outer side of the shell is fixedly sleeved with a hexagonal lantern ring;

an oil storage bag is arranged in the detection groove, an annular plate is fixedly arranged at the opening of the oil storage bag, one side of the annular plate is attached to one end of the sealing groove, a circuit board is movably arranged in the sealing groove, a sensor body is fixedly arranged on one side of the circuit board close to the oil storage bag, a lead is fixedly arranged on one side of the circuit board far away from the sensor body,

preferably, the inboard of seal groove is seted up there is the internal thread, the inside activity of seal groove is equipped with the radiating piece, the outside of radiating piece is provided with first external screw thread, first external screw thread uses with the interior screw-thread fit, the inside activity of seal groove is equipped with sealed dish, the outside of sealed dish is provided with the second external screw thread, the second external screw thread uses with the interior screw-thread fit.

Preferably, the oil reservoir bladder is filled with liquid oil in the interior thereof, and the sensor body is immersed in the liquid oil in the interior thereof.

Preferably, the heat sink is provided with a groove at one end close to the circuit board, heat absorption rubber is filled in the groove, and the heat absorption rubber is attached to one side of the circuit board.

Preferably, one end of the heat dissipation member, which is close to the circuit board, is fixedly provided with a rubber pad, and one side of the rubber pad is attached to one side of the circuit board.

Preferably, the one end activity in proper order of wire runs through radiating piece and sealed dish, the fixed cover of one end that the shell was kept away from to the wire is equipped with the sealing rubber cover, the one end and the laminating of sealed dish of sealing rubber cover.

Preferably, the drainage hole has been seted up to the one end of installed part, the one end and the detection groove intercommunication in drainage hole.

Compared with the prior art, the beneficial effects of the utility model reside in that:

1. the annular plate is arranged, the annular plate is clamped in the sealing groove, the oil storage bag is inserted into the detection groove, liquid oil is filled into the oil storage bag, the circuit board is clamped in the sealing groove, and the sensor body is immersed into the liquid oil, so that the error caused by impurities in the air can be avoided, and the purpose of improving accuracy is achieved;

2. through being equipped with the radiating piece, through with the inside that the radiating piece installed the seal groove through first external screw thread and interior screw-thread fit to make heat absorption rubber and circuit board laminating, just so can conveniently dispel the heat, again with sealed dish through second external screw thread and interior screw-thread fit install the inside of seal groove, just so can avoid circuit board and air contact oxidation to lead to the condition that life subtracts the weak point, thereby reach the purpose of protection circuit board.

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 schematic structural diagram of the present invention.

Fig. 2 is an explosion diagram of the structure of the present invention.

Fig. 3 is a sectional view of the structure of the present invention.

Fig. 4 is a schematic view of the structure of the housing of the present invention.

Description of reference numerals: 1. a housing; 2. a mounting member; 3. a sealing groove; 4. a detection tank; 5. an oil reservoir bladder; 6. an annular plate; 7. a circuit board; 8. a sensor body; 9. a wire; 10. an internal thread; 11. a heat sink; 12. a first external thread; 13. sealing the disc; 14. a second external thread; 15. a groove; 16. heat absorbing rubber; 17. a rubber pad; 18. a liquid oil; 19. a hexagonal collar; 20. a drainage hole; 21. and sealing the rubber sleeve.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Example (b): as shown in fig. 1-4, the utility model provides an oil-immersed pressure sensor, which comprises a shell 1, wherein one end of the shell 1 is provided with a sealing groove 3, one end of the sealing groove 3 is provided with a detection groove 4, one end of the shell 1, which is far away from the sealing groove 3, is provided with an installation part 2, one end of the installation part 2 is provided with a drainage hole 20, one end of the drainage hole 20 is communicated with the detection groove 4, and the outer side of the shell 1 is fixedly sleeved with a hexagonal lantern ring 19; an oil storage bag 5 is arranged inside the detection groove 4, an annular plate 6 is fixedly arranged at an opening of the oil storage bag 5, one side of the annular plate 6 is attached to one end of the sealing groove 3, a circuit board 7 is movably arranged inside the sealing groove 3, a sensor body 8 is fixedly arranged at one side of the circuit board 7 close to the oil storage bag 5, a lead 9 is fixedly arranged at one side of the circuit board 7 far away from the sensor body 8, one end of the lead 9 sequentially and movably penetrates through a radiating piece 11 and a sealing disc 13, a sealing rubber sleeve 21 is fixedly sleeved at one end of the lead 9 far away from the shell 1, one end of the sealing rubber sleeve 21 is attached to the sealing disc 13, the sealing performance between the lead 9 and the sealing disc 13 can be improved by arranging the sealing rubber sleeve 21, liquid oil 18 is filled inside the oil storage bag 5, the sensor body 8 is immersed inside the liquid oil 18, the annular plate 6 is clamped inside the sealing groove 3, and the oil storage bag 5 is inserted into the detection groove 4, then, liquid oil 18 is filled into the oil storage bag 5, then the circuit board 7 is clamped in the sealing groove 3, and the sensor body 8 is immersed in the liquid oil 18, so that the condition that the air has impurities to cause errors can be avoided, and the purpose of improving the accuracy is achieved.

An internal thread 10 is arranged on the inner side of the sealing groove 3, a heat dissipation piece 11 is movably arranged inside the sealing groove 3, a first external thread 12 is arranged on the outer side of the heat dissipation piece 11, the first external thread 12 is matched with the internal thread 10 for use, a sealing disc 13 is movably arranged inside the sealing groove 3, a second external thread 14 is arranged on the outer side of the sealing disc 13, the second external thread 14 is matched with the internal thread 10 for use, a groove 15 is arranged at one end, close to the circuit board 7, of the heat dissipation piece 11, heat absorption rubber 16 is filled inside the groove 15, the heat absorption rubber 16 is attached to one side of the circuit board 7, the heat dissipation piece 11 is installed inside the sealing groove 3 in a matching mode through the first external thread 12 and the internal thread 10, the heat absorption rubber 16 is attached to the circuit board 7, heat dissipation can be facilitated, the sealing disc 13 is installed inside the sealing groove 3 in a matching mode through the second external thread 14 and the internal thread 10, and therefore the situation that the service life is shortened due to contact oxidation of the circuit board 7 and air can be avoided, thereby achieving the purpose of protecting the circuit board 7.

The rubber pad 17 is fixedly arranged at one end, close to the circuit board 7, of the heat dissipation member 11, one side of the rubber pad 17 is attached to one side of the circuit board 7, and the rubber pad 17 is arranged, so that the situation that the heat dissipation member 11 is crushed can be avoided, and the purpose of protecting the circuit board 7 is achieved.

Working principle; firstly, an annular plate 6 is clamped inside a sealing groove 3, an oil storage bag 5 is inserted inside a detection groove 4, liquid oil 18 is filled inside the oil storage bag 5, then a circuit board 7 is clamped inside the sealing groove 3, a sensor body 8 is immersed in the liquid oil 18, the situation that air impurities cause errors can be avoided, and the purpose of accuracy is achieved, then a radiating piece 11 is installed inside the sealing groove 3 through matching of a first external thread 12 and an internal thread 10, heat absorption rubber 16 is attached to the circuit board 7, heat dissipation can be facilitated, a sealing disc 13 is installed inside the sealing groove 3 through matching of a second external thread 14 and the internal thread 10, the situation that the service life is shortened due to contact oxidation of the circuit board 7 and air can be avoided, and the purpose of protecting the circuit board 7 is achieved, finally, the pressure sensor is mounted on the user equipment through the mounting member 2.

It will be apparent to those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims and their equivalents, the present invention is also intended to include such modifications and variations.

Claims

1. An oil-immersed pressure sensor comprises a shell (1), and is characterized in that one end of the shell (1) is provided with a sealing groove (3), one end of the sealing groove (3) is provided with a detection groove (4), one end of the shell (1) far away from the sealing groove (3) is provided with an installation part (2), and the outer side of the shell (1) is fixedly sleeved with a hexagonal lantern ring (19);

detect the inside of groove (4) and be provided with oil storage bag (5), the fixed ring plate (6) that is equipped with of opening part of oil storage bag (5), one side of ring plate (6) and the one end laminating of seal groove (3), the inside activity of seal groove (3) is equipped with circuit board (7), one side that circuit board (7) are close to oil storage bag (5) is fixed and is equipped with sensor body (8), one side that sensor body (8) were kept away from in circuit board (7) is fixed and is equipped with wire (9).

2. The oil-immersed pressure sensor according to claim 1, wherein an internal thread (10) is formed in the inner side of the sealing groove (3), a heat dissipation member (11) is movably arranged in the sealing groove (3), a first external thread (12) is arranged on the outer side of the heat dissipation member (11), the first external thread (12) is matched with the internal thread (10) for use, a sealing disc (13) is movably arranged in the sealing groove (3), a second external thread (14) is arranged on the outer side of the sealing disc (13), and the second external thread (14) is matched with the internal thread (10) for use.

3. Oil-filled pressure sensor according to claim 1, characterized in that the interior of the oil reservoir (5) is filled with liquid oil (18), the sensor body (8) being immersed in the liquid oil (18).

4. The oil-immersed pressure sensor according to claim 2, wherein a groove (15) is formed in one end of the heat sink (11) close to the circuit board (7), a heat absorption rubber (16) is filled in the groove (15), and the heat absorption rubber (16) is attached to one side of the circuit board (7).

5. Oil-immersed pressure sensor according to claim 2, wherein a rubber pad (17) is fixedly arranged at one end of the heat sink (11) close to the circuit board (7), and one side of the rubber pad (17) is attached to one side of the circuit board (7).

6. The oil-immersed pressure sensor according to claim 2, wherein one end of the lead (9) penetrates through the heat sink (11) and the sealing disc (13) in sequence, a sealing rubber sleeve (21) is fixedly sleeved on one end of the lead (9) far away from the housing (1), and one end of the sealing rubber sleeve (21) is attached to the sealing disc (13).

7. The oil-immersed pressure sensor according to claim 1, wherein one end of the mounting part (2) is provided with a drainage hole (20), and one end of the drainage hole (20) is communicated with the detection groove (4).