CN209910885U

CN209910885U - High-temperature-resistant pressure sensor

Info

Publication number: CN209910885U
Application number: CN201920794747.7U
Authority: CN
Inventors: 刘伟
Original assignee: Suzhou Pasir Automation Technology Co Ltd
Current assignee: Suzhou Pasir Automation Technology Co Ltd
Priority date: 2019-05-30
Filing date: 2019-05-30
Publication date: 2020-01-07
Anticipated expiration: 2029-05-30

Abstract

The utility model discloses a high temperature resistance pressure sensor, including the main casing body, introducing port, holding tank and pressure sensor, the introducing port has been seted up to the upper end inside of the main casing body, and the lower extreme of introducing port is provided with the clamp plate, the holding tank has been seted up to the inside of the main casing body, and the clamp plate is located the inside of holding tank to the lower extreme of clamp plate is provided with the gasbag, the lower extreme of gasbag is connected with the barrier pad, and the below of barrier pad is provided with the pressure sensor core to the mounting panel is installed to the lower extreme of pressure sensor core. This high temperature resistance pressure sensor is provided with fixed block, first magnet and second magnet, and user's accessible rotates the mounting panel and makes to break away from the appeal between first magnet and the second magnet at the second recess internal rotation on the fixed block, then the first recess of accessible takes out the fixed block, and then takes off the mounting panel, is convenient for overhaul and change the pressure sensor core, has increased the practicality of device.

Description

High-temperature-resistant pressure sensor

Technical Field

The utility model relates to a sensor technical field specifically is a high temperature resistant pressure sensor.

Background

With the intelligent development of the society at present, the use of the sensor is also more and more extensive, wherein pressure sensor commonly uses in car, industrial production, plays the detection effect to the pressure change, but current pressure sensor still has some deficiencies in the use in the high temperature environment:

1. the high-temperature-resistant pressure sensor disclosed in the publication number CN105486449B has the advantages that a circuitous single-ended closed gas path is arranged between a high-temperature container or a pipeline wall pipeline and the pressure sensor, and the gas in the gas path is radiated by using the radiating outer cover, so that the temperature of the gas entering a detection cavity is effectively reduced, but when the temperature of the gas is reduced, the pressure in the gas changes along with the temperature of the gas, and the accuracy of a detection result is influenced;

2. the sensor body that current pressure sensor was in is fixed in sensor housing's inside mostly, is not convenient for dismantle the inspection with the pressure sensor core alone when the sensor device goes wrong, is unfavorable for overhauing the sensor body, has reduced the practicality of device.

In order to solve the problems, innovative design based on the original pressure sensor is urgently needed.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a high temperature resistance pressure sensor to solve the pressure sensor on the existing market that above-mentioned background art provided and can lead to gas pressure to change when the high temperature environment carries out cooling detection to gas, influence the accuracy of testing result, and the sensor internals easily takes place to damage under high temperature environment, and current pressure sensor is not convenient for quick the problem of dismantling the maintenance to the sensor core simultaneously.

In order to achieve the above object, the utility model provides a following technical scheme: a high-temperature-resistant pressure sensor comprises a main shell, an introducing port, a containing tank and a pressure sensor core body, wherein the introducing port is formed in the upper end of the main shell, a pressing plate is arranged at the lower end of the introducing port, the containing tank is formed in the main shell, the pressing plate is located in the containing tank, an air bag is arranged at the lower end of the pressing plate, an isolating pad is connected to the lower end of the air bag, the pressure sensor core body is arranged below the isolating pad, a mounting plate is mounted at the lower end of the pressure sensor core body, a heat insulation tank is arranged on the outer side of the pressure sensor core body and located in the main shell, fixing blocks are fixed to the left side and the right side of the mounting plate, a first magnet is arranged in the fixing block, a second groove is formed in the outer side of the fixing block, a first groove is formed in the lower portion of the, and the inner wall of the second groove is provided with a second magnet.

Preferably, the pressure plate and the inner wall of the accommodating groove form sliding connection, and the inner space of the accommodating groove is communicated with the outside through the introducing port.

Preferably, the gas filled in the air bag is nitrogen, and the vertical center line of the air bag is coincident with the vertical center line of the pressing plate.

Preferably, the heat insulation groove has an annular cross section in plan view, and the inside of the heat insulation groove is also filled with nitrogen gas.

Preferably, the mounting plate is movably connected with the second groove through the fixing block, the depth of the second groove is equal to the thickness of the fixing block, and the inner space of the second groove is communicated with the inner space of the first groove.

Preferably, the first magnet and the second magnet are of different magnetic poles, the number of the first magnet and the number of the second magnet are 2, and the 2 first magnets are respectively positioned on the front side and the rear side of the fixed block.

Compared with the prior art, the beneficial effects of the utility model are that: the high temperature resistant pressure sensor;

(1) the device is provided with a pressing plate, an air bag and a heat insulation groove, when the device is used in a high-temperature environment, external high gas can generate pressure on the surface of the air bag through an extrusion pressing plate, so that the air bag deforms and extrudes an isolation pad, a core body of the pressure sensor can detect the external pressure through the pressure change of the isolation pad, the air bag has good stability due to the filling of nitrogen in the air bag, meanwhile, the damage of the core body of the pressure sensor caused by the heat transferred into the core body of the pressure sensor is avoided, and meanwhile, the core body of the pressure sensor is isolated from the outside to a certain extent due to the arrangement of the heat insulation groove, so that the device has better high-temperature resistance;

(2) be provided with fixed block, first magnet and second magnet, user's accessible rotates the mounting panel and makes to break away from the appeal between first magnet and the second magnet at second recess internal rotation on the fixed block, then the first recess of accessible takes out the fixed block, and then takes off the mounting panel, is convenient for overhaul and change the pressure sensor core, has increased the practicality of device.

Drawings

FIG. 1 is a schematic view of the main sectional structure of the present invention;

fig. 2 is a schematic bottom view of the main housing of the present invention;

FIG. 3 is a schematic view of the heat insulation groove of the present invention;

fig. 4 is an enlarged schematic structural view of a portion a in fig. 1 according to the present invention.

In the figure: 1. a main housing; 2. an inlet port; 3. pressing a plate; 4. an air bag; 5. an insulating pad; 6. a heat insulation groove; 7. accommodating grooves; 8. a pressure sensor core; 9. mounting a plate; 10. a first groove; 11. a fixed block; 12. a second groove; 13. a first magnet; 14. a second magnet.

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.

Referring to fig. 1-4, the present invention provides a technical solution: a high-temperature-resistant pressure sensor comprises a main shell 1, an inlet 2, a pressing plate 3, an air bag 4, an isolation pad 5, a heat insulation groove 6, an accommodating groove 7, a pressure sensor core 8, a mounting plate 9, a first groove 10, a fixing block 11, a second groove 12, a first magnet 13 and a second magnet 14, wherein the inlet 2 is arranged inside the upper end of the main shell 1, the pressing plate 3 is arranged at the lower end of the inlet 2, the accommodating groove 7 is arranged inside the main shell 1, the pressing plate 3 is positioned inside the accommodating groove 7, the air bag 4 is arranged at the lower end of the pressing plate 3, the isolation pad 5 is connected to the lower end of the air bag 4, the pressure sensor core 8 is arranged below the isolation pad 5, the mounting plate 9 is arranged at the lower end of the pressure sensor core 8, the heat insulation groove 6 is arranged outside the pressure sensor core 8, the heat insulation groove 6 is positioned inside the main shell, a first magnet 13 is arranged inside the fixed block 11, a second groove 12 is arranged outside the fixed block 11, a first groove 10 is arranged below the second groove 12, the first groove 10 and the second groove 12 are both arranged on the inner wall of the main shell 1, and a second magnet 14 is arranged on the inner wall of the second groove 12;

the pressure plate 3 is in sliding connection with the inner wall of the accommodating groove 7, the inner space of the accommodating groove 7 is communicated with the outside through the introducing port 2, the structural design enables external high-temperature gas to generate acting force on the pressure plate 3, and damage to parts in the pressure sensor core 8 caused by direct contact of the high-temperature gas and the pressure sensor core 8 is avoided;

the gas filled in the air bag 4 is nitrogen, and the vertical central line of the air bag 4 is superposed with the vertical central line of the pressing plate 3, so that the air bag 4 has good stability and heat insulation performance, and meanwhile, the air bag 4 can be uniformly stressed by the pressure from the pressing plate 3, and the integral stability of the device during working is ensured;

the overlooking cross section of the heat insulation groove 6 is of an annular structure, nitrogen is filled in the heat insulation groove 6, the structural design enables the pressure sensor core body 8 to have a good working environment under the action of the heat insulation groove 6, and part of external high temperature is isolated by the heat insulation groove 6, so that the heat resistance of the device is improved, and the service life of the device is prolonged;

the mounting plate 9 is movably connected with the second groove 12 through the fixing block 11, the depth of the second groove 12 is equal to the thickness of the fixing block 11, and the inner space of the second groove 12 is communicated with the inner space of the first groove 10, the mounting plate 9 can be fixed through the fixing block 11 and the second groove 12 through the structural design, the mounting plate 9 can be conveniently detached in the follow-up process, and the practicability of the device is improved;

the first magnet 13 and the second magnet 14 have different magnetic poles, 2

first magnets

13 and 2 second magnets 14 are respectively arranged at the front side and the rear side of the fixed block 11, and the fixed block 11 can be stably kept in the second groove 12 by the attraction force between the first magnet 13 and the second magnet 14, so that the two fixed blocks 11 can respectively keep stable attraction force with the second magnet 14 after rotating.

The working principle is as follows: when the high-temperature-resistant pressure sensor is used, firstly, the device is installed at a position where pressure detection is needed, and pressure is ready to be detected in real time, as shown in fig. 1, external gas pressure enters the inside of the main shell 1 through the introducing port 2, then the pressing plate 3 is extruded, the pressing plate 3 slides downwards in the accommodating groove 7 under the pressure, the air bag 4 is pressed downwards, the air bag 4 deforms and transmits the pressure to the surface of the isolation pad 5, the surface of the isolation pad 5 is detected by the pressure sensor core 8 when the pressure changes, and then the pressure is output to an external display device, so that the pressure detection is realized, when the external gas temperature is high, high-temperature gas acts on the surface of the pressing plate 3 and is isolated outside, meanwhile, secondary isolation can be performed on heat through nitrogen filled in the air bag 4, and the direct action of heat on the pressure sensor core 8 is effectively avoided, meanwhile, the stability of the measurement result is ensured, and meanwhile, as shown in fig. 3, the pressure sensor core body 8 is effectively isolated from the outer side of the main shell 1 under the action of the outer side heat insulation groove 6, and the heat is effectively isolated by the nitrogen filled in the heat insulation groove 6, so that the pressure sensor core body 8 is kept in a good working environment, the heat resistance of the device is improved, and the service life of the device is prolonged;

after the device is used, when the pressure sensor core body 8 needs to be overhauled or replaced, as shown in a combined drawing 1 and a combined drawing 2 and a combined drawing 4, the mounting plate 9 can be rotated, the first magnet 13 and the second magnet 14 which are arranged on the surface of the fixing block 11 are separated, the fixing block 11 is rotated to the bottom end of the first groove 10, then the fixing block 11 can be taken out from the first groove 10, the mounting plate 9 is disassembled, the pressure sensor core body 8 on the surface of the mounting plate 9 is convenient to overhaul and replace, the fixing block 11 is installed in the second groove 12 again after overhaul and replacement, the first magnet 13 and the second magnet 14 are attracted through magnetic force, the mounting plate 9 is assembled, and the use convenience of the device is improved.

Those not described in detail in this specification are within the skill of the art.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.

Claims

1. A high temperature resistant pressure sensor, includes main casing (1), introducing port (2), holding tank (7) and pressure sensor core (8), its characterized in that: the lead-in opening (2) is formed in the upper end of the main shell (1), the pressing plate (3) is arranged at the lower end of the lead-in opening (2), the accommodating groove (7) is formed in the main shell (1), the pressing plate (3) is located in the accommodating groove (7), the air bag (4) is arranged at the lower end of the pressing plate (3), the isolating pad (5) is connected to the lower end of the air bag (4), the pressure sensor core body (8) is arranged below the isolating pad (5), the mounting plate (9) is installed at the lower end of the pressure sensor core body (8), the heat insulation groove (6) is formed in the outer side of the pressure sensor core body (8), the heat insulation groove (6) is located in the main shell (1), the fixing blocks (11) are fixed on the left side and the right side of the mounting plate (9), and the first magnet (, the outside of fixed block (11) is provided with second recess (12), and the below of second recess (12) is provided with first recess (10), first recess (10) and second recess (12) are all seted up on the inner wall of main casing body (1), and install second magnet (14) on the inner wall of second recess (12).

2. The high temperature resistant pressure sensor of claim 1, wherein: the pressing plate (3) is in sliding connection with the inner wall of the accommodating groove (7), and the inner space of the accommodating groove (7) is communicated with the outside through the introducing port (2).

3. The high temperature resistant pressure sensor of claim 1, wherein: the gas filled in the air bag (4) is nitrogen, and the vertical center line of the air bag (4) is superposed with the vertical center line of the pressing plate (3).

4. The high temperature resistant pressure sensor of claim 1, wherein: the overlooking cross section of the heat insulation groove (6) is of an annular structure, and nitrogen is filled in the heat insulation groove (6).

5. The high temperature resistant pressure sensor of claim 1, wherein: the mounting plate (9) is movably connected with the second groove (12) through the fixing block (11), the depth of the second groove (12) is equal to the thickness of the fixing block (11), and the inner space of the second groove (12) is communicated with the inner space of the first groove (10).

6. The high temperature resistant pressure sensor of claim 1, wherein: be the synonym magnetic pole between first magnet (13) and second magnet (14), and first magnet (13) and second magnet (14) all are provided with 2 to 2 first magnet (13) are located the front and back both sides of fixed block (11) respectively.