Joint for detecting air tightness of valve
By designing a valve airtight detection joint that includes interfaces and balanced channels, combined with pressure attenuation method, the accuracy and reliability of valve airtight detection caused by the existing joint structure is solved, and fast and accurate airtightness is achieved. Test.
Patent Information
- Application Number
- CN202420235738.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-31
- Publication Date
- 2024-12-10
- Estimated Expiration
- 2034-01-31
AI Technical Summary
The existing joint structure has problems with leakage, detection difficulty and accuracy in valve airtightness detection. Due to factors such as material, thermal expansion coefficient, hardness, assembly quality, etc., internal defects are difficult to detect.
Design a valve airtightness detection joint, which includes an interface and a balanced channel, which is used to connect the installation slot and the air source container. The valve airtightness is detected by the pressure attenuation method, and the balanced channel maintains the pressure balance of the container. If the valve leaks, the solution will be Bubble are generated in the process to quickly determine the leakage.
It reduces potential leakage points in valve airtightness detection, improves detection accuracy and reliability, simplifies the detection process, and quickly judges the valve airtightness.
Smart Images
Figure CN222142280U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of valve air tightness detection, in particular to a joint for valve air tightness detection. Background Art
[0002] In the process of testing the air tightness of valves, joints are needed, such as for connecting air pipes and valves. The characteristics of the joint structure have a significant impact on air tightness testing. Different types of joints (such as threaded joints, welded joints, flange joints, etc.) have different structural characteristics, which directly affect the difficulty and method of air tightness testing. For example, threaded joints may cause leakage due to thread mismatch or wear, while welded joints may cause leakage due to weld defects. The material of the joint (such as metal, plastic, rubber) will also affect the air tightness; the thermal expansion coefficient, hardness, elasticity and other properties of different materials will affect the air tightness performance of the joint in different environments. The surface treatment of the joint, such as coating, plating, etc., may affect the occurrence and detection of leaks. Surface unevenness or coating damage may become the source of leakage. The assembly quality of the joint, including tightening torque, alignment accuracy, etc., is crucial to air tightness. Improper assembly may cause gaps or unevenness, which in turn affects air tightness. Internal defects of the joint: Internal defects such as pores, cracks, inclusions, etc. will affect the air tightness of the joint. These defects may be formed during the manufacturing process and are often not easily detected from the outside. In summary, various characteristics of the joint structure will affect the air tightness detection, so the structure of the joint plays a decisive role in the accuracy and reliability of the valve air tightness detection. Utility Model Content
[0003] In view of the technical problem in the prior art that the joint structure affects the valve air tightness detection, the present application provides a joint for valve air tightness detection, which can reduce potential leakage points in the valve air tightness detection and improve the accuracy and reliability of the valve air tightness detection.
[0004] In order to solve the above problems, the technical solution provided by the utility model is:
[0005] A joint for valve air tightness detection includes a joint body, on which are provided a plurality of interfaces and a balance channel, wherein the balance channel runs through the joint body and is connected to mounting grooves arranged at both ends of the joint body, and interfaces arranged on the side of the joint body are respectively connected to the mounting grooves at both ends of the joint body.
[0006] Optionally, interface 1 and interface 5 are provided on the side of the connector body, and interface 6 and interface 2 are provided on the two mounting grooves respectively, and interface 1 is connected to interface 2, and interface 5 is connected to interface 6.
[0007] Optionally, interface four and interface three are respectively provided at the connection point between the balancing channel and the two mounting grooves.
[0008] Optionally, an interface 7 is further provided on the side of the connector body, and an interface 8 is provided on the mounting groove at one end of the connector body.
[0009] Optionally, a first mounting groove is provided at one end of the joint body, and a second mounting groove is provided at the other end of the joint body.
[0010] Optionally, the interface five and the interface one are provided with internal threads.
[0011] Compared with the prior art, the technical solution provided by the utility model has the following beneficial effects:
[0012] When the pressure decay method is used to detect the air tightness of the valve, various joints are required, such as joints connected to the valve, joints connected to the gas source, and various joints that maintain the pressure balance space. The joint of the present application integrates all the above joint functions into one, which can reduce the potential leakage points of the joint in the valve air tightness detection and improve the accuracy and reliability of the valve air tightness detection. The mounting groove is used to install a container that provides a pressure balance space, and the interface is used to connect the gas source and the container installed on the mounting groove, so that the gas source can pass compressed gas into the container. When used specifically, the valve to be tested is connected to one of the containers through the interface and the mounting groove, and a needle tube and a solution are installed in the container. One end of the needle tube is installed on the interface connected to the mounting groove and the balance channel, and the other end of the needle tube extends into the solution; a pressure gauge is set on the pipeline connecting the valve to be tested and the interface, and the balance channel maintains the pressure of the containers located on the two mounting grooves. If the valve leaks, the pressure in the container becomes smaller, and the other container presses gas into the container through the balance channel and the needle tube, and bubbles are generated in the solution. In this way, the valve leakage can be intuitively and quickly judged. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 This is a schematic diagram of the planar structure of one end of a joint for valve air tightness detection proposed in an embodiment of the utility model.
[0014] Figure 2 for Figure 1 Schematic diagram of the HH cross section.
[0015] Figure 3 for Figure 1 Schematic diagram of the EE cross section.
[0016] Figure 4 for Figure 1 Schematic diagram of the GG cross section.
[0017] Figure 5 This is a schematic diagram of the side interface of a joint for valve air tightness detection proposed in an embodiment of the utility model.
[0018] Figure 6for Figure 5 Schematic diagram of the cross section II.
[0019] Figure 7 This is one of the three-dimensional diagrams of a joint for valve air tightness detection proposed in an embodiment of the utility model.
[0020] Figure 8 This is a second stereoscopic diagram of a joint for valve air tightness detection proposed in an embodiment of the utility model.
[0021] Fig. 9 The present invention is a schematic diagram of the use status of a joint for valve air tightness detection proposed in an embodiment of the present invention. DETAILED DESCRIPTION
[0022] In order to further understand the content of the utility model, the utility model is described in detail in conjunction with the accompanying drawings and embodiments.
[0023] The present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It is understood that the specific embodiments described herein are only used to explain the relevant utility model, rather than to limit the utility model. It should also be noted that, for the convenience of description, only the parts related to the utility model are shown in the accompanying drawings. The first, second, etc. terms described in the present utility model are set for the convenience of describing the technical solution of the present utility model, and have no specific limiting effect. They are all general references and do not constitute a limiting effect on the technical solution of the present utility model. It should be noted that, in the absence of conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. are based on the directions or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present utility model. Unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be a connection between the insides of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances. Multiple technical solutions in the same embodiment, and multiple technical solutions in different embodiments, can be arranged and combined to form new technical solutions that do not have contradictions or conflicts, all of which are within the scope of protection required by the present utility model.
[0024] Example
[0025] Combination Figure 1-8 This embodiment proposes a joint for valve air tightness detection, including a joint body 4, on which a plurality of interfaces and a balance channel 441 are provided. The balance channel 441 runs through the joint body 4 and is connected to the mounting grooves at both ends of the joint body 4. The interfaces provided on the side of the joint body 4 are respectively connected to the mounting grooves at both ends of the joint body 4.
[0026] When using the pressure decay method to test the air tightness of a valve, various connectors are required, such as connectors connected to the valve, connectors connected to the gas source, and various connectors that maintain the pressure balance space. The connector of the present application combines all the functions of the above connectors in one, which can reduce the potential leakage points of the connectors in the valve air tightness test and improve the accuracy and reliability of the valve air tightness test. The mounting groove is used to install a container that provides a pressure balance space, and the interface is used to connect the gas source and the container installed on the mounting groove, so as to facilitate the gas source to pass compressed gas into the container. When used, the valve to be tested is connected to one of the containers through the interface and the mounting groove, such as Fig. 9 As shown, a needle tube 34 and a solution 33 are installed in the container, one end of the needle tube 34 is installed on the interface connecting the installation groove and the balance channel 441, and the other end of the needle tube 34 extends into the solution 33; a pressure gauge is arranged on the pipeline connecting the valve to be tested and the interface, and the balance channel 441 maintains the pressure of the containers located on the two installation grooves in balance. If the valve leaks, the pressure in the container becomes smaller, and gas is pressed into the container from another container through the balance channel 441 and the needle tube, and bubbles are generated in the solution. Based on this, it is possible to intuitively and quickly determine whether the valve is leaking.
[0027] In an optional embodiment, the side of the connector body 4 is provided with an interface 1 41 and an interface 5 45, and the two mounting grooves are respectively provided with an interface 6 46 and an interface 2 42, and the interface 1 41 and the interface 2 42 are connected. Figure 4 As shown, the interface five 45 and the interface six 46 are connected, as shown in FIG. Figure 2 As shown. The gas source is used to pass compressed gas into two containers through pipelines, which can quickly reach the valve detection pressure value, speed up the valve detection speed, and improve the detection efficiency. Figure 1-8 The middle interface 1 41 and the interface 5 are adjacent to each other on the side 45 of the connector body 4. Fig. 9 The middle interface 1 41 and the interface 5 45 are far apart on the side of the connector body 4 .
[0028] In an optional embodiment, the connection between the balancing channel 441 and the two mounting grooves is provided with an interface 44 and an interface 3 43, respectively. Figure 6 As shown, the pressure balance of the two containers is maintained through these two interfaces.
[0029] In an optional embodiment, the side of the joint body 4 is further provided with an interface 7 47, and the mounting groove at one end of the joint body 4 is provided with an interface 8 48. The interface 8 48 is used to install a pressure gauge to detect the pressure change in the container at that location, so as to determine whether the pressure value is constant and whether it reaches the detection pressure value. Figure 3 , 6 and 8.
[0030] In an optional embodiment, one end of the joint body 4 is provided with a mounting groove 1 421, and the other end of the joint body 4 is provided with a mounting groove 2 461. The mounting groove 1 421 is used to install the container 1 31, and the mounting groove 2 461 is used to install the container 2 32. Figure 2 and 4 shown.
[0031] In an optional embodiment, the interface 5 45 and the interface 1 41 are provided with internal threads. They are used to install the air pipe and the needle tube 34 respectively, which is convenient for installation, so as to facilitate the introduction of compressed air and observe whether bubbles are generated. Figure 2-4 , as shown in 6-8.
[0032] The above schematically describes the present invention and its implementation methods, which are not restrictive. The drawings show only one implementation method of the present invention, and the actual structure is not limited thereto. Therefore, if ordinary technicians in this field are inspired by it and design structural methods and embodiments similar to the technical solution without creativity without departing from the purpose of the present invention, they should all fall within the protection scope of the present invention.
Claims
1. A joint for valve air tightness detection, characterized in that: It includes a joint body, which is provided with a plurality of interfaces and a balance channel. The balance channel runs through the joint body and is connected to the mounting grooves at both ends of the joint body. The interfaces arranged on the side of the joint body are respectively connected to the mounting grooves at both ends of the joint body.
2. A valve air tightness detection connector according to claim 1, characterized in that: The side of the joint body is provided with interface 1 and interface 5, and the two installation grooves are respectively provided with interface 6 and interface 2, and the interface 1 is connected with interface 2, and interface 5 is connected with interface 6.
3. A valve air tightness detection connector according to claim 1, characterized in that: The connection points between the balancing channel and the two mounting grooves are provided with interface four and interface three respectively.
4. A valve air tightness detection connector according to claim 1, characterized in that: The side of the joint body is also provided with an interface 7, and the mounting groove at one end of the joint body is provided with an interface 8.
5. A valve air tightness detection connector according to claim 2, characterized in that: One end of the joint body is provided with a first mounting groove, and the other end of the joint body is provided with a second mounting groove.
6. A valve air tightness detection connector according to claim 2, characterized in that: The interface five and the interface one are provided with internal threads.