Sealing ring for pipe joint and pipe joint assembly comprising sealing ring

Abstract

The utility model provides a sealing ring for a pipe joint and a pipe joint assembly comprising the sealing ring. The sealing ring for the pipe joint comprises a sealing ring main body, the first end of the connecting ring in the axial direction is connected with the second end of the sealing ring body in the axial direction, a first clamping piece is arranged on the wall of the second end of the connecting ring in the axial direction, the first clamping piece is connected with the inner wall of a pipe joint in a clamped mode, and the sealing ring can be connected to the pipe joint in a clamped mode. The sealing ring is effectively prevented from being separated from the pipe joint.

Description

TECHNICAL FIELD

[0001] The utility model belongs to pipeline sealing technical field, concretely relates to a sealing ring for pipe joint and pipe joint assembly containing it. BACKGROUND

[0002] In the pipeline connection system, the pipe quick connector is widely used in various industrial fields such as petroleum chemical industry, electric power, water conservancy and the like due to its quick connection and disassembly characteristics. Especially, with the vigorous growth of the mobile heating market demand, some steam pipe quick connectors face more severe conditions in actual application scenarios, such as high pressure, high temperature, large flow, and the medium also has certain corrosiveness, and the pipe joint is used frequently. As a key component for ensuring the sealing of the pipe joint connection, the performance of the sealing ring directly affects the safe and stable operation of the entire pipeline system.

[0003] The metal sheep horn pipe joint sealing ring applied in the pipeline connection has some deficiencies. For example, in the positioning of the sealing ring, the existing sealing ring needs to be placed in the appropriate position by the operator on site before being connected with the pipe joint, and the operation is relatively cumbersome. Especially in the mobile heating environment, the operator is prone to inaccurate positioning due to fatigue and other factors when facing frequent joint operations, which affects the sealing effect. For another example, in the application process of the pipe joint, the sealing ring is often easy to fall off from the pipe joint, which increases the difficulty for the on-site operator.

[0004] Therefore, it is necessary to design a sealing ring for pipe joint and pipe joint assembly containing it to avoid the problems of easy falling off of the sealing ring and on-site installation. INVENTION CONTENTS

[0005] In view of part or all of the above technical problems existing in the prior art, the utility model provides a sealing ring for pipe joint and pipe joint assembly containing it. The sealing ring for pipe joint is clamped to the pipe joint by the first clamping piece, can be pre-assembled, avoids on-site installation of the sealing ring to the pipe joint, in addition, the clamping of the sealing ring and the pipe joint is realized by the first clamping piece, which can effectively prevent the sealing ring from falling off the pipe joint and help to ensure the connection stability.

[0006] According to an aspect of the utility model, a sealing ring for pipe joint is provided, which comprises:

[0007] A sealing ring main body,

[0008] A connecting ring, a first end in the axial direction of the connecting ring is connected with a second end in the axial direction of the sealing ring main body, a first clamping piece is arranged on the wall of the second end in the axial direction of the connecting ring, and the first clamping piece is configured to be clamped and connected with the inner wall of the pipe joint.

[0009] In one embodiment, the first clamping piece is configured as a first elastic sheet that protrudes at least partially radially outward relative to the outer wall of the connecting ring.

[0010] In one embodiment, the first elastic sheet extends in an axial direction around the connecting ring from a fixed end to a free end thereof, and, in the direction from the fixed end to the free end of the first elastic sheet, the first elastic sheet comprises a first guide segment and a first clamping segment connected in sequence, the first guide segment extends obliquely outward away from the outer wall of the connecting ring, and the first clamping segment extends parallel to the circumferential direction of the connecting ring.

[0011] In one embodiment, a plurality of the first clamping pieces are arranged in sequence at intervals in the circumferential direction of the connecting ring.

[0012] In one embodiment, the first elastic sheet and the connecting ring are an integral member, and the first elastic sheet is configured by shearing and bending.

[0013] In one embodiment, the connecting ring is detachably connected to the sealing ring body, the first end of the connecting ring is sleeved into the inner cavity of the sealing ring body, and a second clamping piece is arranged on the wall of the first end of the connecting ring, the second clamping piece is configured to clamp with the inner wall of the sealing ring body.

[0014] In one embodiment, the second clamping piece is configured as a second elastic sheet that protrudes at least partially radially outward relative to the outer wall of the connecting ring.

[0015] In one embodiment, the second elastic sheet extends in an axial direction around the connecting ring from a fixed end to a free end thereof, and, in the direction from the fixed end to the free end of the second elastic sheet, the second elastic sheet comprises a second guide segment and a second clamping segment connected in sequence, the second guide segment extends obliquely outward away from the outer wall of the connecting ring, and the second clamping segment extends parallel to the circumferential direction of the connecting ring.

[0016] In one embodiment, a clamping groove for clamping the second elastic sheet is arranged on the inner wall of the sealing ring body.

[0017] According to another aspect of the present application, a pipe joint assembly is provided, comprising:

[0018] a pipe joint,

[0019] the sealing ring for the pipe joint described above,

[0020] The first clamping piece is clamped and connected to the inner wall of the pipe joint.

[0021] Compared with the prior art, the sealing ring body of the sealing ring for the pipe joint is connected with the connecting ring, the first clamping piece is arranged on the connecting ring, the first clamping piece can be clamped to the inner wall of the pipe joint, thereby the sealing ring is connected to the pipe joint, and then the sealing ring can be pre-connected to the pipe joint on site, thereby the operation task on site is avoided. In addition, since the sealing ring can be clamped to the pipe joint, even during transportation and installation, the sealing ring can be stably connected to the pipe joint, and the sealing ring is effectively prevented from being separated from the pipe joint. BRIEF DESCRIPTION OF DRAWINGS

[0022] The preferred embodiments of the present application will be described in detail below with reference to the accompanying drawings. In the drawings:

[0023] Figure 1 A three-dimensional view of a sealing ring for a pipe joint according to an embodiment of the present application is shown;

[0024] Figure 2 A three-dimensional view of a connecting ring of a sealing ring for a pipe joint according to an embodiment of the present application is shown;

[0025] Figure 3 A three-dimensional view of a connecting ring of a sealing ring for a pipe joint according to an embodiment of the present application is shown, wherein the first clamping piece and the second clamping piece are not bent;

[0026] Figure 4 A three-dimensional view of a sealing ring body of a sealing ring for a pipe joint according to an embodiment of the present application is shown;

[0027] Figure 5 A cross-sectional view of a pipe joint assembly according to an embodiment of the present application is shown.

[0028] In the drawings, the same components are designated by the same reference numerals. The drawings are not drawn according to the actual scale. DETAILED DESCRIPTION

[0029] In order to make the technical scheme and advantages of the present application more clear, the exemplary embodiments of the present application will be further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. And in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other.

[0030] The present application will be further described below with reference to the accompanying drawings. As shown in Figure 1 the sealing ring for the pipe joint 10 includes a sealing ring body 1 and a connecting ring 2. As shown in Figure 5As shown, the sealing ring body 1 is mainly used to cooperate with the pipe joint 20 to seal the pipe joint 20. The connecting ring 2 is annular. The first end in the axial direction of the connecting ring 2 is connected to the second end in the axial direction of the sealing ring body 1. The wall of the second end in the axial direction of the connecting ring 2 is provided with the first clamping piece 21. The first clamping piece 21 is configured to be clamped to the inner wall of the pipe joint 20. As can be seen, in the present application, by additionally providing the connecting ring 2 on the sealing ring body 1, the sealing ring 10 can be clamped to the pipe joint 20. Specifically, the sealing ring body 1 of the sealing ring 10 for the pipe joint is connected to the connecting ring 2, and the first clamping piece 21 is provided on the connecting ring 2. The first clamping piece 21 can be clamped to the inner wall of the pipe joint 20, so as to connect the sealing ring 10 to the pipe joint 20, and then the sealing ring 10 can be pre-connected to the pipe joint 20 outside the site, thereby avoiding increasing the on-site operation task. Of course, the sealing ring 10 and the pipe joint 20 can also be connected on site. However, no matter when the connection is made, both can effectively ensure the installation position through the first clamping piece 21. In addition, since the sealing ring 10 can be clamped to the pipe joint 20, even if the two are pre-assembled during transportation and installation, the sealing ring 10 can be stably connected to the pipe joint 20, effectively avoiding the disconnection of the sealing ring 10 and the pipe joint 20.

[0031] In one embodiment, as shown in Figure 2 The first clamping piece 21 is configured as a first elastic sheet that is at least partially protruded radially outward relative to the outer wall of the connecting ring 2. This arrangement utilizes the elastic force of the first elastic sheet, which can be stably clamped into the inner cavity of the pipe joint 20.

[0032] In terms of structure, the first elastic sheet is strip-shaped, and the direction from the fixed end to the free end of the first elastic sheet extends around the axial direction of the connecting ring 2, that is, generally along the circumferential direction of the connecting ring 2. Moreover, in the direction from the fixed end to the free end of the first elastic sheet, the first elastic sheet contains a first guide segment 211 and a first clamping segment 212 connected in sequence. The first guide segment 211 extends obliquely outward away from the outer wall of the connecting ring 2, and is used to connect the first clamping segment 212 to the outer wall of the connecting ring 2. The first clamping segment 212 is parallel to the circumferential direction of the connecting ring 2. As can be seen, by extending the first guide segment 211 radially outward relative to the connecting ring 2, the first clamping segment 212 is driven away from the outer wall of the connecting ring 2, and the first clamping segment 212 forms a clamping portion that can be pressed against the inner wall of the pipe joint 20, and is used to provide a stable clamping force during clamping.

[0033] A plurality of first clamping pieces 21 are provided in the circumferential direction of the connecting ring 2 in a spaced manner. This arrangement can improve the clamping effect and ensure that the connecting ring 2 is stably connected to the pipe joint 20.

[0034] The first elastic sheet and the connecting ring 2 are an integral component. The first elastic sheet is configured by cutting and bending. As shown in Figure 3As shown, according to the design, the annular connecting ring 2 is cut to form multiple sheet-like parts on the connecting ring 2. One end of each sheet-like part is fixed to the connecting ring 2, and the other extends along the circumference of the connecting ring 2. Later, the first snap-fit ​​part 21 is formed by a bending process.

[0035] In one embodiment, the connecting ring 2 and the sealing ring body 1 are fixedly connected. For example, they can be manufactured as a single piece, or they can be fixed together by welding or other methods.

[0036] In another embodiment, the connecting ring 2 and the sealing ring body 1 are detachably connected. For example, the connecting ring 2 and the sealing ring body 1 are snap-fitted. Specifically, the first end of the connecting ring 2 is fitted into the inner cavity of the sealing ring body 1. A second snap-fit ​​member 22 is provided on the wall of the first end of the connecting ring 2. The second snap-fit ​​member 22 is configured to snap into the inner wall of the sealing ring body 1. By making the connecting ring 2 and the sealing ring body 1 separate components, it is convenient to design them to be made of different materials to optimize their respective characteristics. It is easy to understand that the connecting ring 2 and the sealing ring body 1 can also be made of the same material. In particular, even if one of the connecting ring 2 and the sealing ring body 1 is damaged, only that component can be replaced instead of replacing the entire unit, reducing costs.

[0037] The structure of the second snap-fit ​​member 22 can refer to the structure of the first snap-fit ​​member 21, that is, it is the same as or similar to the structure of the first snap-fit ​​member 21. Specifically, the second snap-fit ​​member 22 is constructed as a second spring piece that at least partially protrudes radially outward relative to the outer wall of the connecting ring 2. The second spring piece itself is strip-shaped, and its direction from the fixed end to the free end extends around the axial direction of the connecting ring 2, that is, it extends generally along the circumference of the connecting ring 2. In the direction from the fixed end to the free end of the second spring piece, the second spring piece contains a second guide section 221 and a second snap-fit ​​section 222 connected in sequence. The second guide section 221 extends obliquely outward away from the outer wall of the connecting ring 2, mainly serving a connecting function. The second snap-fit ​​section 222 is parallel to the circumference of the connecting ring 2, mainly serving a snap-fit ​​function.

[0038] like Figure 4 As shown, a snap-fit ​​groove 11 for snapping the second spring piece is provided on the inner wall of the sealing ring body 1. The snap-fit ​​groove 11 is a circumferentially distributed groove on the inner wall of the sealing ring body 1. After the first end of the connecting ring 2 extends into the inner cavity of the sealing ring body 1, the second snap-fit ​​section 222 of the second spring piece extends into the snap-fit ​​groove 11. On the one hand, the second spring piece pressurizes against the bottom wall of the snap-fit ​​groove 11 to achieve snap-fit ​​between the sealing ring body 1 and the connecting ring 2; on the other hand, the snap-fit ​​groove 11 also limits the position of the second spring piece, preventing the connecting ring 2 from moving axially relative to the sealing ring body 1.

[0039] It is easily understood that a plurality of second clamping members 22 are also arranged on the wall of the connecting ring 2 to improve the clamping stability. For example, 4, 5, 6 or more second clamping members 22 are evenly arranged in the circumference of the connecting ring 2. The number of the first clamping members 21 can be the same as or different from the number of the second clamping members 22.

[0040] On the connecting ring 2, two groups of clamping members are arranged, i.e. a group of first clamping members 21 and a group of second clamping members 22. For the sake of simple processing, the structures of the two groups of clamping members can be the same. In the connecting installation process, either end of the connecting ring 2 in the axial direction can be connected with the sealing ring body 1, and the connected end is defined as the first end, and the other end is defined as the second end. It can be seen that the connecting ring 2 arranged in this way does not have problems such as installation reversal, simplifying the installation. It is easily understood that, for the convenience of processing and the balance of stress, the free ends of all clamping members in a group of clamping members are in the same direction relative to the fixed end, and the free end of the first clamping member 21 is opposite to the free end of the second clamping member 22 relative to the fixed end. For example, in the connecting ring 2 shown in Figure 2 , the fixed end of the first clamping member 21 is on the right side of the free end on the outer wall side of the connecting ring 2, and the fixed end of the second clamping member 22 is on the left side of the free end.

[0041] The material selection of the connecting ring 2 has diversity, which can be stainless steel series or copper alloy series. When the application scene focuses on the demand for high strength and high corrosion resistance, such as the pipeline in the field of petrochemical industry, stainless steel series materials can be selected. The stainless steel material has good strength, corrosion resistance and elasticity, and can maintain stable performance in various complex working conditions. For example, in the scene of mobile heating steam hose, facing high temperature, high flow and possibly corrosive steam, the elastic clamp spring of stainless steel material will not be easily corroded or deformed and failed due to stress. When there are special requirements for elasticity and electrical conductivity, copper alloy series materials can be selected. Copper alloy has good elasticity and electrical conductivity, and can play a unique advantage in some pipeline environments sensitive to static electricity.

[0042] The sealing ring body 1 can also be selected from stainless steel series and copper alloy series. If the use scene has high requirements for high temperature resistance and wear resistance, stainless steel series materials are a good choice, which can still maintain good sealing performance in high temperature and high friction environment. When more attention is paid to flexibility, thermal conductivity and adaptability to different temperatures, copper alloy series materials are more suitable. For example, in some pipeline systems with frequent temperature changes, the copper alloy sealing ring body 1 can always maintain close contact with the inner wall of the pipe joint by virtue of its good thermal expansion and contraction performance, ensuring the sealing effect.

[0043] The application also relates to a pipe joint assembly. As shown in Figure 5As shown, the pipe joint assembly comprises a pipe joint 20 and a sealing ring 10. Among them, the first clamping part 21 is clamped and connected to the inner wall of the pipe joint 20, and then the sealing ring body 1 is arranged to the designed position through the connecting ring 2. After the connection is completed, the second end of the connecting ring 2 in the axial direction extends into the inner cavity of the pipe joint 20 and is clamped to the inner wall of the pipe joint 20 through the first clamping part 21. The structure of the pipe joint 20 itself is not improved relative to the prior art, and the adaptability of the sealing ring 10 is improved. In addition, the second end of the connecting ring 2 in the axial direction extends into the inner cavity of the sealing ring body 1, and the position relationship between the connecting ring 2 and the sealing ring body 1 is limited through the cooperation of the second clamping part 22 and the clamping groove 11. After installation is completed, the first sealing surface 12 of the sealing ring body 1 is just seated on the second sealing surface 201 of the pipe joint 20.

[0044] In this application, the connecting ring 2 can be clamped to the pipe inner wall of the pipe joint 20 through the first clamping part 21, and then the sealing ring 10 is arranged to the pipe joint 20. Before the pipe joint 20 is connected with other components, it can be ensured that the sealing ring 10 is in the appropriate position without manual positioning. This design greatly improves the convenience and accuracy of installation, effectively avoids the problem that the sealing effect is affected due to improper manual positioning. In actual application scenarios, such as mobile heating steam hose quick pipe joint operation, the operator does not need to spend energy to manually place and adjust the sealing ring position, which saves operation time and improves overall work efficiency. More importantly, the structure design of the connecting ring 2 and the sealing ring body 1 has good universality. For different pipe diameters, the relevant component structure does not need to be adjusted, and only the size needs to be changed to be applicable to pipe joints of multiple pipe diameters. This feature makes the sealing ring 10 can be widely used in different specifications of pipe connection systems, greatly widening the application range of the product, reducing the research and development cost and manufacturing cost caused by the need to design multiple sealing rings with different structures due to different pipe diameters.

[0045] The material of the connecting ring 2 and the sealing ring body 1 can be the same or different. For example, different materials can be selected according to application characteristics. The connecting ring 2 can be made of stainless steel. The connecting ring 2 made of stainless steel has good corrosion resistance, high strength and good elastic recovery ability, and can still maintain stable structure and performance when subjected to high-flow fluid impact and adapt to different temperature environments. The sealing ring body 1 is made of copper alloy, which has good heat conductivity, corrosion resistance and certain flexibility, and can better adapt to high temperature, low temperature, normal temperature and other temperature environments, ensuring good sealing effect under different working conditions. In addition, for different media, flexible material selection can also be made according to the characteristics of the medium. For example, when the medium has strong corrosiveness, a special alloy material with better corrosion resistance can be selected as the material of the connecting ring 2 and the sealing ring body 1; if the medium has special requirements for the friction coefficient, a material with corresponding friction characteristics can be selected. This way of selecting materials according to the functional requirements of different components and the characteristics of the medium, through physical structure combination, takes into account the rigidity and flexibility, effectively solving the problem of limited material selection of the existing integrated sealing ring.

[0046] In the manufacturing process, the connecting ring 2 is processed by laser cutting and manual shaping. Laser cutting can ensure cutting accuracy, reduce material waste, and the cutting edge quality is high, which is beneficial to subsequent manual shaping. Manual shaping can finely adjust the first clamping piece 21 and the second clamping piece 22 according to actual needs, so that they better fit the inner wall of the pipe joint 20. The sealing ring body 1 is processed by turning. The turning process can accurately control the size accuracy of the sealing ring body 1, ensuring its sealing performance. Through these processing technologies, the cutting amount can be relatively reduced, the manufacturing cost is reduced, the raw material cost is saved, the processing time is shortened, and the production efficiency is improved.

[0047] In the assembly scheme of the connecting ring 2 and the sealing ring body 1, the second clamping piece 22 is sleeved into the inner wall of the sealing ring body 1, the bent second clamping piece 22 is provided with elastic force fixed into the clamping groove 11, and stable radial and axial fixation is formed. When the pipe joint 20 is connected, the elastic force provided by the deformation of the bent first clamping piece 21 is fixed on the inner wall of the pipe joint 20. The fixing mode of the elastic sheet type can be disassembled. Such a design enables the connecting ring 2 and the sealing ring body 1 to be maintained separately, so that when one of the components is damaged, the damaged component can be replaced without the need for overall replacement, thereby greatly reducing the maintenance cost. And, such a maintenance operation can be carried out on the spot in the application scene without the need for special tools. Taking the mobile heating site as an example, even in a relatively remote or environment without complete repair equipment, maintenance personnel can replace the connecting ring 2 and the sealing ring body 1 by relying on simple conventional tools or even bare hands, greatly improving the convenience of maintenance, reducing downtime caused by waiting for professional repair tools and personnel due to equipment failure, and further improving the operation efficiency of the entire pipeline connection system.

[0048] The first clamping piece 21 and the second clamping piece 22 are strips extending along the circumference of the connecting ring 2, and are formed by cutting the connecting ring 2. The flow channel resistance formed by the design is lower, and does not have a great influence on the delivery efficiency of the fluid inside, and is especially suitable for large-flow working conditions, such as the large-flow and high-pressure delivery scene of the pipe joint of the steam hose in the mobile heating market, to ensure that the medium can be delivered efficiently. Moreover, since the physical clamping fixing mode is adopted, the structural stability is strong, the risk of the sealing ring falling off is greatly reduced, and the safety and reliability of the entire delivery pipeline connection system are further improved.

[0049] The above is only a preferred embodiment of the present application, but the protection scope of the present application is not limited thereto, and any person skilled in the art can easily make changes or variations within the technical range disclosed in the present application, and such changes or variations should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A sealing ring for a pipe joint, characterized in that The sealing ring comprises: a sealing ring body, a connecting ring, a first end of the connecting ring in an axial direction is connected to a second end of the sealing ring body in an axial direction, a wall of a second end of the connecting ring in the axial direction is provided with a first clamping piece, and the first clamping piece is configured to be clamped and connected with an inner wall of a pipe joint.

2. The sealing ring for a pipe joint according to claim 1, characterized by The first clamping piece is configured as a first elastic sheet that is at least partially protruded radially outward relative to an outer wall of the connecting ring.

3. The sealing ring for a pipe joint according to claim 2, characterized in that, A fixed end to a free end direction of the first elastic sheet extends around the axial direction of the connecting ring, and, in the fixed end to the free end direction of the first elastic sheet, the first elastic sheet contains a first guide section and a first clamping section connected in sequence, the first guide section extends obliquely outward away from the outer wall of the connecting ring, and the first clamping section extends parallel to a circumferential direction of the connecting ring.

4. The sealing ring for a pipe joint according to claim 3, characterized in that, A plurality of the first clamping pieces are provided in sequence at intervals in the circumferential direction of the connecting ring.

5. The sealing ring for a pipe joint according to claim 3, characterized by The first elastic sheet and the connecting ring are an integral member, and the first elastic sheet is configured by cutting and bending.

6. A sealing ring for a pipe joint according to any one of claims 1 to 5, characterized in that The connecting ring is detachably connected with the sealing ring body, the first end of the connecting ring is sleeved into an inner cavity of the sealing ring body, and a second clamping piece is provided on a wall of the first end of the connecting ring, and the second clamping piece is configured to be clamped with an inner wall of the sealing ring body.

7. A sealing ring for a pipe joint according to claim 6, characterized in that The second clamping piece is configured as a second elastic sheet that is at least partially protruded radially outward relative to an outer wall of the connecting ring.

8. The sealing ring for a pipe joint according to claim 7, characterized in that, A fixed end to a free end direction of the second elastic sheet extends around the axial direction of the connecting ring, and, in the fixed end to the free end direction of the second elastic sheet, the second elastic sheet contains a second guide section and a second clamping section connected in sequence, the second guide section extends obliquely outward away from the outer wall of the connecting ring, and the second clamping section extends parallel to the circumferential direction of the connecting ring.

9. The sealing ring for a pipe joint according to claim 8, characterized in that, A clamping groove for clamping the second elastic sheet is provided on the inner wall of the sealing ring body.

10. A pipe joint assembly characterized by, The sealing ring comprises: a pipe joint, the sealing ring for the pipe joint according to any one of claims 1 to 9, wherein and the first clamping piece is clamped and connected to the inner wall of the pipe joint.

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