High-sealing-performance sensor testing equipment
By using annular threaded sleeves and sealing components made of metal materials, the problem of poor sealing at the joints of pressure sensor testing equipment is solved, and a leak-free sealing effect is achieved under high-frequency vibration, ensuring test accuracy and reliability.
Patent Information
- Application Number
- CN202422461507.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-12
- Publication Date
- 2025-10-10
- Estimated Expiration
- 2034-10-12
AI Technical Summary
The joints of existing pressure sensor testing equipment are prone to poor sealing due to high-frequency vibration, leading to leakage and inaccurate test results.
The annular threaded sleeve and sealing assembly are made of metal materials. The threaded connection and metal sealing structure ensure the fixed connection between the joint and the threaded sleeve. Stainless steel and copper alloy materials are used to improve the mechanical strength and sealing performance, and the sealing ring is fixed with epoxy glue to prevent it from falling off.
Maintains sealing under high-frequency vibration and extreme environment, avoids leakage, ensures the accuracy and reliability of test results, simple installation and good sealing.
Smart Images
Figure CN223426138U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of pressure sensors, in particular to a high-sealing sensor testing device. Background Art
[0002] During the performance test of the pressure sensor before leaving the factory, inert gas is generally first delivered to the air inlet of the pressure sensor. The pressure sensor outputs the voltage or current signal to be tested based on the pressure difference between the inert gas pressure entering the interior and the external atmospheric pressure, thereby achieving accurate testing of the pressure sensor performance requirements.
[0003] During testing, the sensor needs to be connected to the external gas pipeline, and the two are docked through joints. However, existing joints are mostly made of plastic and are sealed with sealing rings. This will cause high-frequency vibrations at the joints during gas transmission, which can easily cause leakage and the entry of external gas, thereby affecting the test results. Utility Model Content
[0004] The purpose of the utility model is to provide a high-sealing sensor testing device in response to the problems existing in the background technology.
[0005] The technical solution of the utility model is: a high-sealing sensor testing equipment, including a shell, the shell is equipped with a threaded sleeve, a joint connected to the gas pipeline is installed in the threaded sleeve, an upper sealing assembly is provided on the inner side of the threaded sleeve, and a lower sealing assembly is provided on the outer side of the joint, the upper sealing assembly includes an annular seat body fixed in the threaded sleeve, an annular sealing cavity and an annular thread groove are provided in the annular seat body, the lower sealing assembly includes an annular chassis fixed on the joint, an annular sealing sleeve matched with the annular sealing cavity, and an annular threaded sleeve threadedly connected to the annular thread groove is fixed on the annular chassis.
[0006] Preferably, the inner portions of the annular seat and the annular sealing sleeve are both made of stainless steel, and the outer portions are both made of alloy material.
[0007] Preferably, an annular sealing cavity is provided in the outer ring of the annular seat, and an annular sealing ring is provided in the annular sealing cavity.
[0008] Preferably, the housing includes a bottom shell, the inner wall of the bottom shell is provided with threads, and the threaded sleeve is threadedly installed in the bottom shell.
[0009] Compared with the prior art, the beneficial effects of the utility model are that: the scheme is installed into the annular thread groove through the annular thread sleeve, so that the joint and the thread sleeve are connected and fixed, and both are made of metal material, so that the annular sealing sleeve is inserted into the annular sealing cavity to form metal sealing, which ensures that the pressure sensor does not leak even if it is sealed in high-frequency vibration or extreme environment, and the installation is simple and the sealing is good. BRIEF DESCRIPTION OF DRAWINGS
[0010] Figure 1 It is a structure schematic view of the utility model;
[0011] Figure 2 It is a structure schematic view of the utility model; Figure 1
[0012] Figure 3 It is a sectional structure schematic view of the utility model.
[0013] Reference signs: 1, shell; 2, bottom shell; 3, thread sleeve; 4, joint; 5, lower sealing assembly; 6, upper sealing assembly; 51, annular bottom disc; 52, annular sealing sleeve; 53, annular thread sleeve; 61, annular seat body; 62, annular sealing cavity; 63, annular thread groove; 64, annular groove; 65, annular sealing ring. DETAILED DESCRIPTION
[0014] The technical scheme in the embodiments of the utility model will be described clearly and completely below with reference to the drawings in the embodiments of the utility model, and obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments.
[0015] Referring to the drawings Figure 1-Figure 3 A high sealing performance sensor test equipment, including shell 1, shell 1 is installed with thread sleeve 3, and the joint 4 connected with gas pipeline is installed in the thread sleeve 3, and the inner side of thread sleeve 3 has upper sealing assembly 6, and the outer side of joint 4 is equipped with lower sealing assembly 5, and upper sealing assembly 6 includes annular seat body 61 fixed in thread sleeve 3, and annular seat body 61 is provided with annular sealing cavity 62 and annular thread groove 63, and lower sealing assembly 5 includes annular bottom disc 51 fixed on joint 4, and annular bottom disc 51 is fixed with annular sealing sleeve 52 matched with annular sealing cavity 62, and annular thread sleeve 53 is threadedly connected with annular thread groove 63.
[0016] The lower sealing assembly 5 and the upper sealing assembly 6 form a sealed connection structure between the threaded sleeve 3 and the joint 4. The annular threaded sleeve 53 is threadedly installed in the annular thread groove 63, so that the joint 4 and the threaded sleeve 3 are connected and fixed, and the annular sealing sleeve 52 is inserted into the annular sealing cavity 62 to form a metal seal, ensuring that the pressure sensor will not leak even when performing a sealing test under high-frequency vibration or extreme environment. This method is simple to install and has good sealing performance.
[0017] The insides of the annular seat body 61 and the annular sealing sleeve 52 are both made of stainless steel, and the outsides are both made of alloy material.
[0018] Specifically, both are made of 316L stainless steel inside and wrapped with copper alloy material on the outside. The 316L stainless steel layer provides mechanical strength and corrosion resistance, while the copper alloy layer provides better sealing.
[0019] In addition, the hardness of the materials of the annular sealing sleeve 52 and the annular sealing cavity 62 are both HRC50-55, and the surface roughness is Ra<0.4 μm, so that the two have high flatness when combined.
[0020] In this embodiment, an annular sealing cavity 62 is defined on the outer ring of the annular seat 61 , and an annular sealing ring 65 is disposed in the annular sealing cavity 62 .
[0021] The annular sealing ring 65 is fixed in the annular sealing cavity 62 by epoxy adhesive, which can prevent the joint 4 from falling off due to frequent installation. The joint 4 will pass through the annular sealing ring 65 during installation, thereby further improving its sealing effect.
[0022] In addition, the housing 1 includes a bottom shell 2 , the inner wall of the bottom shell 2 is provided with threads, and the threaded sleeve 3 is threadedly installed in the bottom shell 2 .
[0023] During specific operation, the threaded sleeve 3 is installed in the bottom shell 2, the lower sealing assembly 5 is installed in the upper sealing assembly 6, the joint 4 passes through the annular sealing ring 65, and finally the test pipe and the end of the joint 4 are connected.
[0024] The above are only preferred specific implementation methods of the present invention, but the protection scope of the present invention is not limited to them. Any technician familiar with the technical field can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention within the technical scope disclosed by the present invention, and they should be covered by the protection scope of the present invention.
Claims
1. A high-sealing sensor testing device, comprising a housing (1), characterized in that: The housing (1) is provided with a threaded sleeve (3), a joint (4) connected to a gas transmission pipeline is provided in the threaded sleeve (3), an upper sealing assembly (6) is provided on the inner side of the threaded sleeve (3), and a lower sealing assembly (5) is provided on the outer side of the joint (4), the upper sealing assembly (6) comprises an annular seat body (61) fixed in the threaded sleeve (3), an annular sealing cavity (62) and an annular thread groove (63) are provided in the annular seat body (61), and the lower sealing assembly (5) comprises an annular base plate (51) fixed on the joint (4), an annular sealing sleeve (52) matched with the annular sealing cavity (62) and an annular thread sleeve (53) threadedly connected to the annular thread groove (63) are fixed on the annular base plate (51).
2. A high-sealing sensor testing device according to claim 1, characterized in that: The insides of the annular seat (61) and the annular sealing sleeve (52) are both made of stainless steel, and the outsides are both made of alloy material.
3. The high-sealing sensor testing equipment according to claim 1, characterized in that: An annular sealing cavity (62) is provided on the outer ring of the annular seat (61), and an annular sealing ring (65) is provided in the annular sealing cavity (62).
4. The high-sealing sensor testing equipment according to claim 1, characterized in that: The housing (1) comprises a bottom shell (2), the inner wall of the bottom shell (2) is provided with threads, and the threaded sleeve (3) is threadedly mounted in the bottom shell (2).