CN217845471U

CN217845471U - High-pressure flat-film pressure sensor

Info

Publication number: CN217845471U
Application number: CN202221825686.4U
Authority: CN
Inventors: 史文全; 周琦; 吴志勇; 丁艳玲
Original assignee: Dongguan Nanli Sensing Apparatus Co ltd
Current assignee: Guangdong Mali Electrical Measurement Technology Co.,Ltd.
Priority date: 2022-07-14
Filing date: 2022-07-14
Publication date: 2022-11-18
Anticipated expiration: 2032-07-14

Abstract

The utility model discloses a high pressure flat membrane pressure sensor, which comprises an elastomer, fixed mounting has the strainometer on the elastomer inner wall, the elastomer outside is equipped with sealed face, sealed face is vertical horizontal plane, be provided with the sealing washer on the sealed face, elastomer one end fixedly connected with pipe is kept away from to the strainometer, pipe surface cover is equipped with gland nut, gland nut and pipe sliding connection, pipe tail end fixed connection connecting block, the outside fixedly connected with hesmann outer tube of connecting block, hesmann outer tube tail end fixedly connected with hesmann connects, through being provided with the elastomer in the strainometer outside, uses through the cooperation between elastomer and the strainometer to carry out the accuracy measurement through deformation, and the elastomer is provided with the sealed face of horizontal plane, through the structural design of sealed face, make short circuit contact pressure face be planar structure, thereby can effectively solve because of the contact face by the fluted jam and influence the problem of measuring accuracy.

Description

High-pressure flat-film pressure sensor

Technical Field

The utility model relates to a dynamometry technical field specifically is high-pressure flat membrane pressure sensor.

Background

A Pressure Transducer (Pressure Transducer) is a device or apparatus that can sense a Pressure signal and can convert the Pressure signal into a usable output electrical signal according to a certain rule, and the Pressure Transducer usually consists of a Pressure sensing element and a signal processing unit. According to different test pressure types, the pressure sensor can be divided into a gauge pressure sensor, a differential pressure sensor and an absolute pressure sensor, the pressure sensor is the most commonly used sensor in industrial practice, the pressure sensor is widely applied to various industrial automatic control environments and relates to various 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, when the existing pressure sensor is used, the waterproof sealing performance of the joint part of the existing pressure sensor is poor, so that liquid invasion is easily caused, the pressure value cannot be accurately measured by the internal sensor, the precision is influenced, and the service life is also influenced.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a high flat membrane pressure sensor to solve the problem that proposes in the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the high-pressure flat membrane pressure sensor comprises an elastic body, wherein a strain gauge is fixedly mounted on the inner wall of the elastic body, a sealing surface is arranged outside the elastic body and is a vertical horizontal plane, a sealing ring is arranged on the sealing surface, one end of the strain gauge, which is far away from an elastic body, is fixedly connected with a guide pipe, a gland nut is sleeved on the outer surface of the guide pipe and is in sliding connection with the guide pipe, the tail end of the guide pipe is fixedly connected with a connecting block, the outer part of the connecting block is fixedly connected with a Hesman outer pipe, and the tail end of the Hesman outer pipe is fixedly connected with a Hesman joint.

Preferably, the lower surface of the heusman connector is fixedly connected with a cable connector, and the lower surface of the cable connector is fixedly connected with a cable.

Preferably, a sensor connecting wire is fixedly mounted inside the conduit, and one end of the sensor connecting wire is electrically connected with the strain gauge.

Preferably, a connecting plate is fixedly mounted inside the Husmann outer tube, the connecting plate is electrically connected with the other end of the sensor connecting wire, and a cable connecting wire is fixedly mounted on the connecting plate.

Preferably, the cable connecting line is electrically connected with the cable line through the hesmann connector and the cable connector.

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

1. through be provided with the elastomer in strainometer outside, cooperation through between elastomer and the strainometer is used, thereby carry out the accuracy measurement through deformation, and the elastomer is provided with the sealed face of horizontal plane, structural design through sealed face, make short circuit contact pressure face be planar structure, thereby can effectively solve because of the contact surface is fluted to be blockked up by liquid and influence measurement accuracy's problem, effectively improve measurement accuracy, and the elastomer can carry out the trompil at sealed face when in-service use, thereby installation sealing washer and seal cover, when in-service use, can improve this pressure sensor's sealing performance greatly, guarantee life when improving measurement accuracy, performance is good.

2. Through being provided with gland nut in the pipe outside, can cramp the pipe outer wall through the gland nut who sets up, thereby effectively improve this pressure sensor's structural strength, be connected with the sensor connecting wire through the strainometer, the connecting plate, cable connecting wire and cable conductor, use through the cooperation between the above-mentioned structure, thereby can accomplish the transmission work to measured data, guarantee the normal use of this sensor, can improve pressure sensor's structural strength through the pipe that sets up and the outer tube of hesmann, and the structural strength is increased, and the service life and compressive property are prolonged.

Drawings

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

fig. 2 is a schematic external structural view of the present invention;

FIG. 3 is a schematic view of the structure of the elastomer and the catheter of the present invention;

FIG. 4 is a schematic structural view of the Husmann outer tube of the present invention;

fig. 5 is a schematic view of the sealing structure of the present invention.

In the figure: 1. an elastomer; 2. a strain gauge; 3. a conduit; 4. a compression nut; 5. connecting blocks; 6. a Husmann outer tube; 7. a Husman linker; 8. a sensor connecting wire; 9. a connecting plate; 10. a cable connection line; 11. a cable wire; 12. a cable connector; 13. a sealing surface; 14. and (5) sealing rings.

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 efforts all belong to the protection scope of the present invention.

Referring to fig. 1-5, the present invention provides a technical solution: high-pressure flat membrane pressure sensor, including elastomer 1, fixed mounting has strainometer 2 on 1 inner wall of elastomer, 1 outside of elastomer is equipped with sealed face 13, sealed face 13 is vertical horizontal plane, be provided with sealing washer 14 on sealed face 13, 1 one end fixedly connected with pipe 3 of elastomer is kept away from to

strainometer

2, 3 outer surface sleeves of pipe are equipped with gland nut 4,

gland nut

4 and 3 sliding connection of pipe, 3 tail end fixed connection connecting blocks of

pipe

5, 5 outside fixedly connected with hesmann outer tubes 6 of connecting block, 6 tail end fixedly connected with hesmann joints 7 of hesmann outer tubes.

In this embodiment, the cable connector 12 is fixedly connected to the lower surface of the heusman connector 7, the cable 11 is fixedly connected to the lower surface of the cable connector 12, and the cable connector 12 can improve the connection performance and the structural strength between the cables.

In this embodiment, the inside fixed mounting of pipe 3 has

sensor connecting wire

8, 8 one end of sensor connecting wire and strainometer 2 electric connection to conveniently carry out the data transmission effect.

In this embodiment, a connection board 9 is fixedly installed inside the heusman outer tube 6, the connection board 9 is electrically connected to the other end of the sensor connection line 8, and a cable connection line 10 is fixedly installed on the connection board 9.

In the present embodiment, the cable connection 10 is electrically connected to the cable 11 through the heusman connector 7 and the cable connector 12.

When the pressure sensor is used, the pressure sensor can be used by a conventional use method by technicians in the field, the elastic body 1 is arranged outside the strain gauge 2, the pressure sensor is used by matching between the elastic body 1 and the strain gauge 2, pressure data measurement is carried out through deformation, the elastic body 1 is provided with the sealing surface 13 of a horizontal plane, through the structural design of the sealing surface 13, the short-circuit contact pressure surface is of a plane structure, the problem that the measurement precision is influenced because a groove of the contact surface is blocked by liquid can be effectively solved, the measurement precision is effectively improved, the elastic body 1 can be opened at the sealing surface 13 in actual use, a sealing ring 14 and a sealing sleeve (particularly, a reference figure 5 is provided), when the pressure sensor is actually used, the sealing performance of the pressure sensor can be greatly improved, the service life is ensured while the measurement precision is improved, the service life is good, through the compression nut 4 arranged outside the conduit 3, the outer wall of the conduit 3 can be tightly hooped through the compression nut 4, the structural strength of the pressure sensor is effectively improved, the sensor connecting wire 8 is connected through the strain gauge 2, the cable 10 and the cable 11, through the structural use life of the conduit 3 and the conduit, the pressure sensor can be improved, and the use life of the conduit can be improved.

In the description of the present invention, it is to be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "one side", "top", "inner", "front", "center", "both ends", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second", "third", "fourth" are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated, whereby the features defined as "first", "second", "third", "fourth" may explicitly or implicitly include at least one such feature.

In the present invention, unless otherwise explicitly specified or limited, the terms "mounted", "disposed", "connected", "fixed", "screwed" and the like are to be understood broadly, and may be, for example, a fixed connection, a detachable connection, or an integral body; can be mechanically or electrically connected; they may be directly connected or indirectly connected through an intermediate medium, and may be connected through the inside of two elements or in an interaction relationship between two elements, unless otherwise specifically defined, and the specific meaning of the above terms in the present invention will be understood by those skilled in the art according to specific situations.

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

Claims

1. High-pressure flat membrane pressure sensor, its characterized in that includes elastomer (1), fixed mounting has strainometer (2) on elastomer (1) inner wall, elastomer (1) outside is equipped with sealed face (13), sealed face (13) are vertical horizontal plane, be provided with sealing washer (14) on sealed face (13), elastomer (1) one end fixedly connected with pipe (3) are kept away from in strainometer (2), pipe (3) surface cover is equipped with gland nut (4), gland nut (4) and pipe (3) sliding connection, pipe (3) tail end fixed connection connecting block (5), connecting block (5) outside fixedly connected with hesman outer tube (6), hesman outer tube (6) tail end fixedly connected with hesman joint (7).

2. The high-pressure flat-membrane pressure sensor according to claim 1, wherein: the lower surface of the Husky man joint (7) is fixedly connected with a cable connector (12), and the lower surface of the cable connector (12) is fixedly connected with a cable conductor (11).

3. The high-pressure flat-membrane pressure sensor according to claim 1, characterized in that: the sensor connecting wire (8) is fixedly installed inside the guide pipe (3), and one end of the sensor connecting wire (8) is electrically connected with the strain gauge (2).

4. The high-pressure flat-membrane pressure sensor according to claim 1, wherein: the sensor is characterized in that a connecting plate (9) is fixedly mounted inside the Husmann outer tube (6), the connecting plate (9) is electrically connected with the other end of the sensor connecting wire (8), and a cable connecting wire (10) is fixedly mounted on the connecting plate (9).

5. The high-pressure flat-membrane pressure sensor according to claim 4, wherein: the cable connecting line (10) is electrically connected with the cable (11) through the Husmann connector (7) and the cable connector (12).