CN216483680U

CN216483680U - Micro-pressure sensor with function of preventing environmental interference

Info

Publication number: CN216483680U
Application number: CN202123148415.8U
Authority: CN
Inventors: 许立明; 邓进宇; 代文凯
Original assignee: Suzhou Aoxiang Automation Technology Co ltd
Current assignee: Suzhou Aoxiang Automation Technology Co ltd
Priority date: 2021-12-15
Filing date: 2021-12-15
Publication date: 2022-05-10
Anticipated expiration: 2031-12-15

Abstract

The utility model discloses a micro-pressure sensor with anti-environmental interference function, which belongs to the technical field of pressure sensors and comprises a transmitter and a micro-pressure sensor which is detachably arranged at the bottom end of the transmitter, wherein two ends of the micro-pressure sensor are symmetrically provided with clamping blocks through a bolt group, one end of each of the two clamping blocks is provided with a pressure relief valve, and the other end of each clamping block is provided with a straight joint and an anti-environmental interference device, the anti-environmental interference device comprises an anti-environmental interference joint which is arranged at the end part of the clamping block, a sealing ring is embedded between the anti-environmental interference joint and a connecting port of the clamping block, a polymer sieve is embedded at one end close to the clamping block in an inner cavity of the anti-environmental interference joint, and one end, far away from the polymer sieve, of the inner cavity of the anti-environmental interference joint is in threaded connection with a precision screw; the device can reduce the influence of environmental factors on the precision of the device, so that the device can normally and stably work in severe environment and maintain normal production work.

Description

Micro-pressure sensor with function of preventing environmental interference

Technical Field

The utility model relates to a pressure sensor technical field, more specifically say, relate to a little pressure sensor of environmental disturbance is prevented in area.

Background

A micro pressure sensor is a pressure sensor that is very commonly used in industrial production. The method is widely applied to various industrial automatic control environments, and relates to the industries of petroleum pipelines, water conservancy and hydropower, railway traffic, intelligent buildings, production automatic control, aerospace, war industry, petrifaction, oil wells, electric power, ships, machine tools, hydraulic machinery, dust removal equipment and the like. The working principle of the micro-pressure sensor is that the pressure of the wind pressure sensor directly acts on the diaphragm of the sensor, so that the diaphragm generates micro displacement which is in direct proportion to the pressure of a medium, the resistance of the sensor changes, the change is detected by an electronic circuit, and a standard signal corresponding to the pressure is converted and output.

The micro-pressure sensor is often very high in precision, so that the requirement on the environment is harsh, the measurement precision can be seriously influenced when the conventional micro-pressure sensor encounters severe weather, and the measurement precision of the micro-pressure sensor can be greatly changed due to a little environmental factor.

SUMMERY OF THE UTILITY MODEL

1. Technical problem to be solved

To the problem that exists among the prior art, the utility model aims to provide a little pressure sensor of environmental disturbance is prevented in area, it can realize reducing the precision influence of environmental factor to the device for the device also can normally stable work under adverse circumstances, maintains normal production work.

2. Technical scheme

In order to solve the above problems, the utility model adopts the following technical proposal.

The utility model provides a little pressure sensor of environmental interference is prevented in area, includes changer and demountable installation in the little pressure sensor of changer bottom, the clamp splice is installed through bolt group symmetry at little pressure sensor both ends, two the relief valve is installed respectively to one end wherein of clamp splice, and the other end installs a word respectively and connects and prevent the environmental interference device.

Furthermore, clamping block sealing rings are embedded into the positions of the two ends of the micro-pressure sensor and the connecting opening of the clamping block.

Furthermore, bolt group includes bolt and nut, and is provided with four groups, four groups the bolt with the nut evenly installed in two clamp splice four corners.

Further, the I-shaped connector is used for being connected with field equipment.

Furthermore, prevent the environmental interference device including install in the clamp splice tip prevent the environmental interference joint, prevent the environmental interference joint with it has the sealing washer to imbed between the clamp splice connection port, prevent that the environmental interference joint inner chamber is being close to clamp splice one end embedding polymer sieve, prevent that the environmental interference joint inner chamber is keeping away from polymer sieve one end threaded connection has accurate screw.

Furthermore, the side face of the end, close to the precision screw, of the anti-environmental interference joint is provided with an annular conical surface.

3. Advantageous effects

Compared with the prior art, the utility model has the advantages of:

this scheme is provided with prevents the environmental disturbance device, can keep out adverse circumstances to micro pressure sensor's influence effectively, improve equipment's measurement accuracy, and then also can normally stable work under adverse circumstances, maintains normal production work, has guaranteed its stability.

Drawings

Fig. 1 is a schematic perspective view of the present invention;

FIG. 2 is an exploded view of the present invention;

FIG. 3 is a schematic side view of the anti-environmental-interference device of the present invention;

fig. 4 is a schematic sectional structure view of the section a-a of fig. 3.

The reference numbers in the figures illustrate:

1. a bolt; 2. a clamping block; 3. a straight joint; 4. an anti-environmental interference device; 5. a nut; 6. a transmitter; 7. a micro-pressure sensor; 8. a clamping block sealing ring; 9. a pressure relief valve; 10. a polymer sieve; 11. a seal ring; 12. an environmentally-friendly joint; 13. precision screw.

Detailed Description

The technical solution in the embodiment of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiment of the present invention; obviously, the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by those skilled in the art without any inventive work are within the scope of the present invention based on the embodiments of the present invention.

Example 1:

referring to fig. 1-4, a micro pressure sensor with environmental interference prevention function comprises a transmitter 6 and a micro pressure sensor 7 detachably mounted at the bottom end of the transmitter 6, wherein clamping blocks 2 are symmetrically mounted at two ends of the micro pressure sensor 7 through four groups of bolts 1 and nuts 5, clamping block sealing rings 8 are embedded in connecting openings, connection sealing performance is guaranteed, a pressure release valve 9 is mounted at one end of each of the two clamping blocks 2, and a linear connector 3 and an environmental interference prevention device 4 are mounted at the other end of each of the two clamping blocks.

Referring to fig. 1 and 2, the in-line connector 3 is used for connecting with a field device, so as to facilitate accurate measurement of device pressure, and the pressure relief valve 9 can be used for relieving the pressure in the cavity of the clamping block 2 and discharging the sewage in the pressure measurement cavity when necessary.

Referring to fig. 3 and 4, the environmental interference prevention device 4 comprises an environmental interference prevention joint 12 installed at the end of a clamping block 2, a sealing ring 11 is embedded between the environmental interference prevention joint 12 and a connecting port of the clamping block 2, the environmental interference prevention joint can be installed at an external thread retracting groove of the environmental interference prevention joint 12, the connection sealing performance with the clamping block 2 is guaranteed, meanwhile, an inner cavity of the environmental interference prevention joint 12 is embedded into a polymer sieve 10 at one end close to the clamping block 2, the wind prevention, dust prevention and water prevention of the polymer sieve 10 can be guaranteed, a precise screw 13 is connected to one end, far away from the polymer sieve 10, of the inner cavity of the environmental interference prevention joint 12 in a threaded mode, the contact area between the inner space of the inner cavity and air can be reduced, and strong wind is blocked.

Referring to fig. 4, the side surface of the end, close to the precision screw 13, of the anti-environmental-interference joint 12 is provided with an annular conical surface, so that water can be effectively prevented from entering the equipment, and long-term stable operation of the equipment is ensured.

When in use: firstly, the micro-pressure sensor 7 is clamped by matching the two clamping blocks 2 with the clamping block sealing rings 8, the four bolts 1 and the nuts 5 are used for locking to ensure the sealing performance, meanwhile, the two pressure relief valves 9 can be used for removing the pressure in the clamping blocks 2 as necessary, and when the linear connector 3 is connected with field equipment, the micro-pressure sensor 7 can be used for accurately measuring the micro-pressure by using a sealed pressure measuring cavity;

secondly, through will preventing that environmental disturbance connects 12 one side and set up to the conical surface, can effectually stop inside water entering equipment, accurate screw 13 has reduced equipment and external area of contact simultaneously, when guaranteeing to prevent wind waterproof, also can keep invariable with ambient pressure, and polymer sieve 10 sets up and is preventing that environmental disturbance connects 12 insidely, it is waterproof dustproof and have the gas permeability to have waterproof, can further guarantee prevent wind waterproof, and keep invariable with ambient pressure, and then can keep out adverse circumstances to micro-pressure sensor 7's influence effectively, improve equipment's measurement accuracy, guarantee its stability.

The above description is only the preferred embodiment of the present invention; the scope of the present invention is not limited thereto. Any person skilled in the art should also be able to cover the technical scope of the present invention by replacing or changing the technical solution and the improvement concept of the present invention with equivalents and modifications within the technical scope of the present invention.

Claims

1. The utility model provides a little pressure sensor of environmental disturbance is prevented in area, includes changer (6) and demountable installation in little pressure sensor (7) of changer (6) bottom, its characterized in that: the micro-pressure sensor (7) is characterized in that clamping blocks (2) are symmetrically arranged at two ends of the micro-pressure sensor (7) through bolt sets, a pressure release valve (9) is arranged at one end of each clamping block (2), and a straight joint (3) and an environment interference prevention device (4) are arranged at the other end of each clamping block.

2. The micro-pressure sensor with environmental disturbance prevention function of claim 1, wherein: and clamping block sealing rings (8) are embedded into the connecting openings of the two ends of the micro-pressure sensor (7) and the clamping blocks (2).

3. The micro-pressure sensor with environmental disturbance prevention function of claim 1, wherein: the bolt group comprises bolts (1) and nuts (5), and four groups of bolts (1) and nuts (5) are uniformly arranged at four corners of the two clamping blocks (2).

4. The micro-pressure sensor with environmental disturbance prevention function of claim 1, wherein: the straight connector (3) is used for being connected with field equipment.

5. The micro-pressure sensor with environmental disturbance prevention function of claim 1, wherein: prevent environmental interference device (4) including install in what clamp splice (2) tip prevents environmental interference and connects (12), prevent environmental interference connect (12) with it has sealing washer (11) to imbed between clamp splice (2) connection port, prevent that environmental interference connects (12) inner chamber is being close to clamp splice (2) one end embedding polymer sieve (10), prevent that environmental interference connects (12) inner chamber and keeping away from polymer sieve (10) one end threaded connection has accurate screw (13).

6. The micro-pressure sensor with environmental disturbance prevention function of claim 5, wherein: the anti-environmental interference joint (12) is close to one end side of the precision screw (13) and is provided with an annular conical surface.