CN220960419U - Waterproof pressure sensor - Google Patents

Abstract

The utility model discloses a waterproof pressure sensor, which belongs to the technical field of pressure sensors, and comprises a mounting end cover, wherein the bottom of the mounting end cover is fixed and is provided with a column-shaped shell in a sealing manner, the bottom end of the column-shaped shell is provided with a monitoring end, one end of the monitoring end, which is far away from the column-shaped shell, is externally provided with a sealing end cover, the center position of the sealing end cover is provided with a through groove, the inside of the through groove is provided with an annular groove, the inside of the through groove is provided with a pressure block, the periphery of one end of the pressure block is provided with a first piston, the periphery of the first piston is fixedly sleeved with a first sealing ring, two ends of one end of the pressure block are provided with cambered surfaces, the sealing waterproof function of the monitoring end is realized by utilizing the first piston, the first sealing ring, the second piston and the third sealing ring, and the pressure rod, so that the sensing end of a sensor body can be subjected to pressure monitoring under the condition of being far away from the monitoring end, the waterproof function is effectively realized, and the phenomenon of water seepage is avoided.

Description

Waterproof pressure sensor

Technical Field

The utility model belongs to the technical field of pressure sensors, and particularly relates to a waterproof pressure sensor.

Background

The pressure sensor is a device or a device capable of sensing pressure signals and converting the pressure signals into usable output electric signals according to a certain rule, the pressure sensor is generally composed of a pressure sensitive element and a signal processing unit, in systems such as aerospace, aviation, weapons, petroleum, automobiles and chemical industry, pressure measurement is often needed to be carried out on high-temperature media, the packaging part of the traditional pressure sensor is too simple and is only packaged through a simple plastic or metal shell, when the pressure sensor is used for detecting high-temperature gas or other media, the sensor equipment is easy to damage due to the fact that heat energy cannot be well conducted, the detection result is affected, in addition, the signal output end of the pressure sensor body is connected through a cable in the actual use process, the cable access opening cannot be kept sealed due to the fact that the cable access opening cannot be sealed, internal water inflow can be caused when the pressure sensor is placed in the air for a long time, and the equipment interference detection result is damaged.

At present, the existing pressure sensor needs to be used underwater in some specific scenes, if the waterproof sealing performance is not good enough, water seepage phenomenon can occur in the long-time use process, internal water inflow of the pressure sensor is caused, the internal circuit board of the pressure sensor is caused to be burnt out, the normal operation of the pressure sensor is seriously influenced, the service life is shortened, and therefore the waterproof pressure sensor is provided.

Disclosure of utility model

The present utility model is directed to a waterproof pressure sensor, which solves the above-mentioned problems in the prior art.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a waterproof type pressure sensor, includes installation end cover, pressure piece and gasbag, the fixed and sealed column casing that installs of bottom of installation end cover, column casing bottom is equipped with the monitor end, the one end outside that the column casing was kept away from to the monitor end is equipped with the seal end cover, seal end cover passes through threaded connection's mode and monitor end fixed connection, the inboard of seal end cover is through the inner wall sealing connection of the second sealing washer and the monitor end that are equipped with, logical groove has been seted up to the central point of seal end cover, the ring channel has been seted up to the inside of logical groove, the inside of logical groove is equipped with the pressure piece, the one end periphery of pressure piece is equipped with first piston, the fixed cover in periphery of first piston is equipped with first sealing washer, the inner wall surface slip and sealing connection of first sealing washer and ring channel, the one end both ends of pressure piece are equipped with the cambered surface.

Preferably, the inside of monitor end is equipped with the gasbag, the periphery cover of gasbag is equipped with the second piston, the inner wall of second piston is through sealed waterproof glue and the periphery sealing connection of gasbag, the periphery top and the bottom of second piston also are equipped with first sealing washer, the inner wall slip and sealing connection of second piston and monitor end, the inside bottom fixed mounting of column type shell has the sensor body, the response end bottom of sensor body is equipped with the pressure bar, the both ends of pressure bar respectively with the response end of sensor body and the top fixed connection of gasbag.

Preferably, a first sealing gasket is arranged at the joint of the sealing end cover and the monitoring end, and the first sealing gasket is fixedly sleeved outside the monitoring end through sealing waterproof glue.

Preferably, a controller is fixedly arranged at the top end of the inner part of the column-shaped shell, and one end of the controller is electrically connected with the sensor body through a connecting wire.

Preferably, one end of the installation end cover is provided with a threaded column, a wire is arranged in the threaded column, and the wire penetrates through the installation end cover to be electrically connected with the controller.

Preferably, the periphery of one end of the threaded column close to the installation end cover is sleeved with a second sealing gasket, and the second sealing gasket is fixedly sleeved on the periphery of one end of the threaded column.

Preferably, the periphery cover of pressure pole is equipped with a plurality of third sealing washer, pressure pole and third sealing washer and the bottom inner wall of column shell slip and sealing connection, the bottom periphery of column shell is equipped with the mounting.

Compared with the prior art, the utility model has the beneficial effects that:

1. Through utilizing first piston, first sealing washer, second piston and third sealing washer, realize the waterproof function of sealing of monitoring end to utilize pressure block, gasbag and pressure bar, make the response end of sensor body can carry out pressure monitoring under the condition of keeping away from the monitoring end, effectually realized waterproof function, avoid taking place the phenomenon of infiltration.

2. Through adopting the gasbag to link up between pressure piece and pressure bar to set up the second piston at the periphery of gasbag, can take place the characteristics of deformation when utilizing the gasbag to receive great pressure, can also exert pressure to the second piston when exerting pressure to the pressure bar, thereby increase the compactness of second piston and monitoring end inner wall contact, thereby make under the condition of external pressure increase, the second piston can promote under the effect of gasbag with monitoring end inner wall contact's compactness, thereby reach the effect that promotes waterproof performance.

Drawings

FIG. 1 is a schematic diagram of the overall structure of the present utility model;

FIG. 2 is a schematic cross-sectional view of the present utility model;

fig. 3 is an enlarged schematic view of fig. 2a according to the present utility model.

In the figure: 1. installing an end cover; 2. a column-shaped housing; 3. a fixing member; 4. a monitoring end; 5. sealing the end cover; 6. a through groove; 7. a pressure block; 8. an annular groove; 9. a first piston; 10. a first seal ring; 11. a second seal ring; 12. a first gasket; 13. an air bag; 14. a second piston; 15. a pressure rod; 16. a third seal ring; 17. a sensor body; 18. a controller; 19. a wire; 20. and a second gasket.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1-3, the present utility model provides a waterproof pressure sensor technical scheme: including installation end cover 1, pressure piece 7 and gasbag 13, the fixed and sealed installation of bottom of installation end cover 1 has column casing 2, column casing 2 bottom is equipped with monitor end 4, the one end outside that column casing 2 was kept away from to monitor end 4 is equipped with seal cap 5, seal cap 5 passes through threaded connection's mode and monitor end 4 fixed connection, the inboard of seal cap 5 is through the inner wall sealing connection of the second sealing washer 11 that is equipped with monitor end 4, logical groove 6 has been seted up to the central point of seal cap 5, annular channel 8 has been seted up to the inside of logical groove 6, the inside of logical groove 6 is equipped with pressure piece 7, the one end periphery of pressure piece 7 is equipped with first piston 9, the periphery fixed cover of first piston 9 is equipped with first sealing washer 10, first piston 9 and first sealing washer 10 and annular channel 8's inner wall surface slip and sealing connection, the one end both ends of pressure piece 7 are equipped with the cambered surface.

Specifically, the inside of monitor end 4 is equipped with gasbag 13, the periphery cover of gasbag 13 is equipped with second piston 14, the inner wall of second piston 14 is through sealed waterproof glue and the periphery sealing connection of gasbag 13, the periphery top and the bottom of second piston 14 also are equipped with first sealing washer 10, the inside bottom fixed mounting of post-like shell 2 has sensor body 17, sensor body 17's response end bottom is equipped with pressure bar 15, the both ends of pressure bar 15 respectively with sensor body 17's response end and the top fixed connection of gasbag 13.

Specifically, the junction of sealed end cover 5 and monitoring end 4 is equipped with first sealed pad 12, and the outside of monitoring end 4 is located through sealed waterproof glue fixed cover to first sealed pad 12.

Specifically, the controller 18 is fixedly mounted on the top end of the interior of the column casing 2, and one end of the controller 18 is electrically connected with the sensor body 17 through a connecting wire.

Specifically, one end of the installation end cover 1 is provided with a threaded column, a wire 19 is arranged in the threaded column, and the wire 19 penetrates through the installation end cover 1 to be electrically connected with the controller 18.

Specifically, the periphery of one end of the threaded column, which is close to the installation end cover 1, is sleeved with a second sealing gasket 20, and the second sealing gasket 20 is fixedly sleeved on the periphery of one end of the threaded column.

Specifically, the periphery cover of pressure pole 15 is equipped with a plurality of third sealing washer 16, and pressure pole 15 and third sealing washer 16 and the bottom inner wall of column casing 2 slip and sealing connection, the bottom periphery of column casing 2 is equipped with mounting 3.

In this embodiment, when using, pressure in the monitoring environment is experienced through pressure piece 7, pressure in the environment forms the extrusion to pressure piece 7, make pressure piece 7 exert pressure to gasbag 13, make gasbag 13 pressure bar 15 exert pressure, extrude the sensing end of sensor body 17 through pressure bar 15, thereby realize pressure monitoring's function, through setting up first piston 9 and first sealing washer 10 in the periphery of pressure piece 7, realize sealing and sliding connection between pressure piece 7 and the ring channel 8 inner wall, the leakproofness has been guaranteed when realizing pressure piece 7 activity, and form secondary sealing and sliding connection to the inner wall of monitoring end 4 in cooperation with the second piston 14 of gasbag 13 periphery, thereby improve sealed waterproof effect, cooperate pressure bar 15 and third sealing washer 16 again, realize realizing the waterproof function to realizing multiple seal, make between sensing end and the monitoring end 4 of sensor body 17 form the multichannel waterproof layer, thereby realize waterproof function, avoid appearing the phenomenon of infiltration.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims (7)

1. The utility model provides a waterproof type pressure sensor, includes installation end cover (1), pressure piece (7) and airbag (13), its characterized in that: the utility model discloses a sealing device for a gas turbine engine, including installation end cover (1), sealing device and pressure piece, column type shell (2) are fixed and sealing mounting has column type shell (2), column type shell (2) bottom is equipped with monitoring end (4), the one end outside that column type shell (2) was kept away from to monitoring end (4) is equipped with sealing cap (5), sealing cap (5) pass through threaded connection's mode and monitoring end (4) fixed connection, sealing cap (5) inboard is through the inner wall sealing connection of second sealing washer (11) and monitoring end (4) that are equipped with, logical groove (6) have been seted up to the central point of sealing cap (5), annular groove (8) have been seted up to the inside of logical groove (6), the inside of logical groove (6) is equipped with pressure piece (7), the one end periphery of pressure piece (7) is equipped with first piston (9), the periphery fixed cover of first piston (9) is equipped with first sealing washer (10), the inner wall surface slip and sealing connection of first piston (10) and annular groove (8), the one end of pressure piece (7) is equipped with the cambered surface.

2. A waterproof pressure sensor according to claim 1, characterized in that: the inside of monitor end (4) is equipped with gasbag (13), the periphery cover of gasbag (13) is equipped with second piston (14), the inner wall of second piston (14) is through sealed waterproof glue and the periphery sealing connection of gasbag (13), the periphery top and the bottom of second piston (14) also are equipped with first sealing washer (10), the inside slip and sealing connection of second piston (14) and monitor end (4), the inside bottom fixed mounting of column casing (2) has sensor body (17), the response end bottom of sensor body (17) is equipped with pressure bar (15), the both ends of pressure bar (15) are respectively with the response end of sensor body (17) and the top fixed connection of gasbag (13).

3. A waterproof pressure sensor according to claim 1, characterized in that: the sealing end cover (5) is provided with a first sealing gasket (12) at the joint of the monitoring end (4), and the first sealing gasket (12) is fixedly sleeved outside the monitoring end (4) through sealing waterproof glue.

4. A waterproof pressure sensor according to claim 1, characterized in that: the controller (18) is fixedly arranged at the top end of the inside of the column-shaped shell (2), and one end of the controller (18) is electrically connected with the sensor body (17) through a connecting wire.

5. A waterproof pressure sensor according to claim 1, characterized in that: one end of the installation end cover (1) is provided with a threaded column, a wire (19) is arranged in the threaded column, and the wire (19) penetrates through the installation end cover (1) to be electrically connected with the controller (18).

6. The waterproof pressure sensor of claim 5, wherein: the periphery of one end of the threaded column close to the installation end cover (1) is sleeved with a second sealing gasket (20), and the second sealing gasket (20) is fixedly sleeved on the periphery of one end of the threaded column.

7. A waterproof pressure sensor according to claim 2, characterized in that: the periphery cover of pressure pole (15) is equipped with a plurality of third sealing washer (16), pressure pole (15) and third sealing washer (16) and the bottom inner wall slip and sealing connection of post shell (2), the bottom periphery of post shell (2) is equipped with mounting (3).