Clamping sleeve connector pressure maintaining plug and pressure detection equipment

Abstract

The utility model belongs to the technical field of pipeline sealing test, and discloses a ferrule joint pressure maintaining plug and pressure detection equipment, the ferrule joint pressure maintaining plug comprises a joint body, a nut and a plug, the plug is made of a flexible elastic material, the interior is hollow, the open end is communicated with the hollow part, and the plug is sleeved on the outer wall of the joint body and is in interference fit with the nut. An operator can manually tighten the nut to achieve sealing, excessive tightening is not needed, and the risks of poor sealing, scratching and deformation are avoided. The width of the plug is gradually reduced from the open end to the closed end, so that pressure can be dispersed, stress concentration caused by overlarge local pressure is avoided, the stability of an internal structure is improved, deformation is effectively prevented, and stable sealing performance is ensured. In addition, the design simplifies the mounting and dismounting process of the clamping sleeve connector pressure maintaining plug, complex tools are not needed, the construction difficulty is lowered, the construction time is shortened, and meanwhile manpower and material resource consumption is reduced. The device is used in cooperation with pressure detection equipment, the detection pipeline route is optimized, redundant connection is reduced, and the system complexity is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of pipeline sealing testing, in particular to a ferrule joint pressure-maintaining plug and pressure detection equipment. Background Art

[0002] Ferrule fittings are widely used in vacuum, semiconductor and other fields. They are pipe connectors used in hydraulic and pneumatic systems. Their characteristic is that they achieve sealing and fixation by compressing the ferrule gasket on the pipe. Usually when performing pressure testing by connecting a ferrule fitting, the sealing principle of the ferrule fitting relies on the compression of the ferrule gasket on the outer wall of the pipe during the tightening of the nut. If the tightening is not sufficient, the seal cannot be achieved. The pressure may even cause the pipe to separate from the ferrule fitting, resulting in fluid leakage. Therefore, in order to ensure the sealing of the ferrule fitting during the test, it is usually necessary to tighten the ferrule fitting with a tool. However, the tightening tool may scratch the device or cause the device to deform, which requires repair. The installation and disassembly process of the ferrule fitting is complicated, resulting in a huge waste of manpower, material resources and resources. In addition, when the pressure testing equipment is provided with multiple ferrule interfaces, in order to stabilize the pressure, multiple ferrule fittings and multiple pipes need to be connected, and the pipeline is very complicated. Utility Model Content

[0003] The purpose of the utility model is to provide a ferrule joint pressure-maintaining plug and pressure detection equipment, which can avoid the risk of poor sealing or scratches or deformation of the device due to the tightening of the ferrule joint, ensure a stable pressure sealing effect, simplify the installation and disassembly process, reduce manpower and material resource consumption, simplify the pipeline route of the pressure detection equipment, and reduce the complexity of the pipeline connection.

[0004] To achieve this purpose, the present invention adopts the following technical solutions:

[0005] Compression fitting pressure retaining plug, used for testing the tightness of equipment, including:

[0006] A connector body having a hollow passage therein, one end of which can be threadedly connected to a nut, and the other end of which is threadedly connected to the detection device, wherein the hollow passage of the connector body is used to provide a passage for a fluid;

[0007] The plug is made of a flexible elastic material and is hollow inside. The plug includes an open end and a closed end. The open end is connected to the hollow part of the plug. The width of the plug gradually decreases from the open end to the closed end. The open end is sleeved on the outer wall of the connector body close to the nut. The nut is interference fit with the outer surface of the plug to achieve sealing.

[0008] Furthermore, the plug is conical in shape.

[0009] Furthermore, the axis where the center point of the closed end is located and the axis where the center point of the open end is located are located on the same straight line.

[0010] Furthermore, the inner diameter of the open end is the same as the outer diameter of the joint body on a side close to the nut, and the plug can tighten the joint body.

[0011] Furthermore, a slot is provided on either the outer wall of the connector body close to the nut or the inner wall of the plug, and a limiting protrusion is provided on the other one, and the limiting protrusion is engaged with the slot.

[0012] Furthermore, a first step is provided on one side of the joint body close to the nut and close to the central axis of the joint body, and the side wall thickness of the open end of the plug is greater than the height of the first step, so that the nut can squeeze the plug and thread it into the joint body.

[0013] Furthermore, a limiting boss is provided at one end of the nut away from the joint body in a direction close to the plug, and the limiting boss can press against the plug.

[0014] Furthermore, the plug is made of silicone.

[0015] Furthermore, the outer wall of the nut is provided with anti-slip grooves.

[0016] The pressure detection device includes multiple interfaces and a compression joint pressure-maintaining plug as described above, wherein the multiple interfaces include a fluid input port, a fluid output port and multiple sealing ports, the fluid input port and the fluid output port are respectively connected to the pipeline for smooth inflow and outflow of the fluid; the side of the connector body away from the nut is connected to the sealing port, and the compression joint pressure-maintaining plug can seal the sealing port to ensure the sealing at the sealing port.

[0017] Beneficial effects of the utility model:

[0018] The utility model provides a ferrule joint pressure-maintaining plug and pressure detection device, comprising a joint body, a nut, and a plug. The plug is made of a flexible elastic material and has a hollow interior. The open end of the plug communicates with the hollow interior. The open end of the plug is sleeved on the outer wall of the joint body and has an interference fit with the nut. The operator can manually tighten the nut without using tools to overtighten it to achieve a seal, thereby avoiding the risk of poor sealing or scratches or deformation of the device caused by tightening the ferrule joint. By gradually reducing the width of the plug from the open end to the closed end, the plug can disperse the stress acting on the plug when subjected to pressure, avoiding stress concentration caused by excessive local pressure. The internal structure is more stable, effectively resisting external pressure, and effectively preventing deformation of the plug caused by increased pressure, thereby ensuring a stable sealing performance. At the same time, the closed end of the plug has a smaller width, which is convenient for passing through the nut, making it easier for the operator to install. The open end of the plug is stretched by the flexible elastic material to tighten the outer wall of the joint body, and the shape design of the plug further increases the contact area between the plug and the joint body, ensuring that the plug is more secure after installation. This design simplifies the installation and removal of compression fitting pressure-retaining plugs, enabling quick operation without the need for complex tools. This significantly reduces the difficulty and time required for installation, and reduces both labor and material resources. The use of compression fitting pressure-retaining plugs in pressure testing equipment optimizes the routing of testing equipment piping, avoids unnecessary pipe connections, and significantly reduces system complexity. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a structural diagram of a pressure-maintaining plug for a ferrule joint of the utility model;

[0020] Figure 2 It is a cross-sectional view of the pressure-maintaining plug of the ferrule joint of the utility model.

[0021] In the picture:

[0022] 1. Connector body; 2. Nut; 3. Plug; 31. Open end; 32. Closed end; 4. First step; 5. Limiting boss. DETAILED DESCRIPTION

[0023] The present invention will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are intended only to illustrate the present invention and are not intended to limit the present invention. It should also be noted that, for ease of description, the accompanying drawings only illustrate portions relevant to the present invention, not all of its components.

[0024] In the description of this utility model, unless otherwise specified or limited, the terms "connected," "connect," and "fixed" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0025] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0026] In the description of this embodiment, the terms "upper," "lower," "left," "right," and other orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely for ease of description and simplified operation. They do not indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first" and "second" are used solely for descriptive purposes and have no special meaning.

[0027] Reference Figures 1 to 2 As shown, the utility model provides a ferrule joint pressure-maintaining plug 3 and a pressure detection device, which can avoid the risk of poor sealing or scratching or deformation of the device due to tightening the ferrule joint, ensure a stable pressure sealing effect, simplify the installation and disassembly process, reduce manpower and material consumption, simplify the pipeline route of the pressure detection equipment, and reduce the complexity of pipeline connection. The ferrule joint pressure-maintaining plug 3 is used for testing the tightness of the detection equipment, including a joint body 1, a nut 2 and a plug 3; a hollow channel is opened inside the joint body 1, one end of the joint body 1 can be screwed to the nut 2, and the other end of the joint body 1 is screwed to the detection equipment, and the hollow channel of the joint body 1 is used to provide a fluid passage; the plug 3 is made of a flexible elastic material and is hollow inside. The plug 3 includes an open end 31 and a closed end 32, the open end 31 is connected to the hollow part of the plug 3, and the width of the plug 3 gradually decreases from the open end 31 to the closed end 32. The open end 31 is sleeved on the outer wall of the joint body 1 on the side close to the nut 2, and the nut 2 and the outer surface of the plug 3 are interference fit to achieve sealing.

[0028] The plug 3 is made of a flexible elastic material and is hollow inside. The open end 31 of the plug 3 is connected to the hollow part. The open end 31 of the plug 3 is sleeved on the outer wall of the connector body 1 and has an interference fit with the nut 2. The operator can manually tighten the nut 2 without over-tightening to achieve sealing. This can avoid the risk of poor sealing or scratches or deformation of the device due to tightening of the ferrule connector. By gradually reducing the width of the plug 3 from the open end 31 to the closed end 32, the plug 3 can disperse the stress of the pressure acting on the plug 3 when it is under pressure, avoiding the stress concentration phenomenon caused by excessive local pressure. The internal structure is more stable, effectively resisting external pressure, and effectively preventing the deformation of the plug 3 caused by increased pressure, thereby ensuring stable sealing performance. At the same time, the closed end 32 of the plug 3 is small in width, which is convenient for passing through the nut 2 and convenient for the operator to install. The open end 31 of the plug 3 can be stretched by the elastic material to tighten the outer wall of the connector body 1, and the shape design of the plug 3 further enhances the contact area between the plug 3 and the connector body 1, ensuring that the plug 3 is more secure after installation. This design simplifies the installation and disassembly process of the ferrule joint pressure-maintaining plug 3, and can be quickly operated without the use of complex tools, greatly reducing the difficulty and time of construction, and reducing manpower and material consumption. The use of the ferrule joint pressure-maintaining plug 3 in the pressure testing equipment optimizes the route of the testing equipment pipeline, avoids unnecessary pipeline connections, and greatly reduces the complexity of the system. Among them, the plug 3 can be, but is not limited to, made of silicone material, which is not specifically limited here.

[0029] In order to facilitate installation by operators, in some embodiments, the outer wall of the nut 2 is provided with anti-slip grooves, wherein the anti-slip grooves increase the friction of the outer surface of the nut 2, making it easier for operators to tighten or loosen the nut 2 by hand to prevent slipping.

[0030] like Figure 1 As shown, in order to further improve the pressure resistance of the plug 3, in some embodiments, the plug 3 is in the shape of a cone. Since the wider bottom of the conical plug 3 can withstand greater pressure, and the narrower top can effectively disperse stress, the conical plug 3 can maintain its shape in a high-pressure environment and is not easily deformed or damaged. In addition, the shape of the conical plug 3 enables it to gradually press the closed part as the nut 2 is tightened when it is inserted into the connector body 1. Due to the gradual contraction of the conical structure, the plug 3 can form a closer contact with the outer wall of the connector body 1, effectively improving the sealing performance and preventing fluid leakage. Furthermore, the axis of the center point of the closed end 32 and the axis of the center point of the open end 31 are located on the same straight line; when the closed end 32 and the open end 31 are located on the same central axis, the plug 3 will present a uniform stress state when subjected to pressure, which is more conducive to increasing the durability and reliability of the plug 3.

[0031] like Figure 2As shown, in order to make the connection between the plug 3 and the connector body 1 more stable, in some embodiments, the inner diameter of the open end 31 is the same as the outer diameter of the connector body 1 on the side close to the nut 2, and the plug 3 can clamp the connector body 1; by precisely matching the inner diameter of the open end 31 of the plug 3 with the outer diameter of the connector body 1, the plug 3 can be tightly fitted on the connector body 1 and ensure the stability of the connection through the clamping effect. The clamping design can enhance the sealing effect. The close contact between the plug 3 and the connector body 1 can prevent any fluid from leaking through the gap. Combined with the interference fit of the nut 2, it can effectively prevent the plug 3 from loosening or falling off under high pressure conditions, thereby ensuring the long-term stable operation of the device. Furthermore, a slot is provided on either the outer wall of the connector body 1 close to the nut 2 or the inner wall of the plug 3, and a limiting protrusion is provided on the other, which is engaged with the slot; through the mechanical engagement between the slot and the limiting protrusion, the connection between the plug 3 and the connector body 1 is made tighter and more stable, and the engaging structure can prevent the plug 3 from loosening or falling off, ensuring that the device maintains a stable connection state during use.

[0032] Continue as Figure 2 As shown, in order to facilitate installation by the operator, in some embodiments, a first step 4 is provided on one side of the connector body 1 close to the nut 2 in the direction close to the central axis of the connector body 1, and the side wall thickness of the open end 31 of the plug 3 is greater than the height of the first step 4, so that the nut 2 can squeeze the plug 3 and screw it to the connector body 1; wherein the setting of the first step 4 provides the operator with a clear positioning reference, so that the plug 3 can be naturally aligned during installation, simplifying the installation process, and the operator can more easily place the plug 3 in the correct position of the connector body 1, reducing the difficulty of installation caused by inaccurate alignment; and the side wall thickness of the open end 31 of the plug 3 is greater than the height of the first step 4, which can also ensure that the nut 2 and the plug 3 are interference fit, thereby ensuring sealing.

[0033] Continue as Figure 2 As shown, in some embodiments, a limiting boss 5 is provided at one end of the nut 2 away from the connector body 1 in a direction close to the plug 3, and the limiting boss 5 can press against the plug 3; the limiting boss 5 can apply additional pressure to the plug 3 when the nut 2 is tightened, ensuring that the plug 3 fits tightly with the connector body 1, further enhancing the sealing effect, and preventing fluid leakage.

[0034] The utility model also provides a pressure detection device, including multiple interfaces and a ferrule pressure-maintaining plug 3 in any of the above-mentioned embodiments, the multiple interfaces including a fluid input port, a fluid output port and multiple sealing ports, the fluid input port and the fluid output port are respectively connected to the pipeline for smooth inflow and outflow of the fluid; the side of the connector body 1 away from the nut 2 is connected to the sealing port, and the ferrule pressure-maintaining plug 3 can seal the sealing port to ensure the sealing at the sealing port; wherein the pressure detection device is used in conjunction with the use of the ferrule pressure-maintaining plug 3, the ferrule pressure-maintaining plug 3 blocks the unused sealing ports, reduces unnecessary pipeline connections, simplifies the layout of the internal pipelines of the pressure detection equipment, thereby making the pipelines more concise and clear, and facilitating maintenance and management, the ferrule pressure-maintaining plug 3 can ensure the sealing of each sealing port, avoids fluid leakage, improves the airtightness and safety of the equipment, optimizes the route of the detection equipment pipeline, avoids unnecessary pipeline connections, and greatly reduces the complexity of the system.

[0035] Obviously, the above-described embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention and are not intended to limit the manner in which the present invention is to be implemented. A person skilled in the art would be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. It is not necessary and impossible to enumerate all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the claims of the present invention.

Claims

1. The ferrule joint pressure retaining plug is used for testing the tightness of the detection equipment, which is characterized by: include: A connector body (1), wherein a hollow passage is provided inside the connector body (1), one end of the connector body (1) can be screwed to a nut (2), and the other end of the connector body (1) is screwed to the detection device, and the hollow passage of the connector body (1) is used to provide a passage for a fluid; A plug (3) is made of a flexible elastic material and is hollow inside. The plug (3) includes an open end (31) and a closed end (32). The open end (31) is connected to the hollow part of the plug (3). The width of the plug (3) gradually decreases from the open end (31) to the closed end (32). The open end (31) is sleeved on the outer wall of the joint body (1) on the side close to the nut (2). The nut (2) and the outer surface of the plug (3) are interference fit to achieve sealing.

2. The ferrule joint pressure retaining plug (3) according to claim 1, characterized in that: The plug (3) is conical in shape.

3. The ferrule joint pressure retaining plug according to claim 2, characterized in that: The axis where the center point of the closed end (32) is located and the axis where the center point of the open end (31) is located are located on the same straight line.

4. The ferrule joint pressure retaining plug according to claim 1, characterized in that: The inner diameter of the open end (31) is the same as the outer diameter of the joint body (1) on the side close to the nut (2), and the plug (3) can tighten the joint body (1).

5. The ferrule joint pressure retaining plug according to claim 4, characterized in that: A slot is provided on either the outer wall of the connector body (1) close to the nut (2) or the inner wall of the plug (3), and a limiting protrusion is provided on the other one. The limiting protrusion is engaged with the slot.

6. The ferrule joint pressure retaining plug according to claim 5, characterized in that: A first step (4) is provided on one side of the joint body (1) close to the nut (2) and in a direction close to the central axis of the joint body (1); the thickness of the side wall of the open end (31) of the plug (3) is greater than the height of the first step (4); and the nut (2) can squeeze the plug (3) to be threadedly connected to the joint body (1).

7. The ferrule joint pressure retaining plug according to claim 6, characterized in that: A limiting boss (5) is provided on one end of the nut (2) away from the connector body (1) in a direction close to the plug (3), and the limiting boss (5) can press against the plug (3).

8. The ferrule joint pressure retaining plug according to any one of claims 1 to 7, characterized in that: The plug (3) is made of silica gel.

9. The ferrule joint pressure retaining plug according to any one of claims 1 to 7, characterized in that: The outer wall of the nut (2) is provided with anti-slip grooves.

10. Pressure detection equipment, comprising a plurality of interfaces, characterized in that, The pressure detection device also includes a ferrule joint pressure-maintaining plug as described in claims 1-9, and the multiple interfaces include a fluid input port, a fluid output port and multiple sealing ports, and the fluid input port and the fluid output port are respectively connected to the pipeline for smooth inflow and outflow of the fluid; the side of the joint body (1) away from the nut (2) is connected to the sealing port, and the ferrule joint pressure-maintaining plug can seal the sealing port to ensure the sealing at the sealing port.

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