Ferrule sealing pipeline movable joint

Abstract

The utility model discloses a movable joint for a cutting sleeve sealing pipeline. The movable joint comprises a joint body, a cutting sleeve, a connecting body and a sealing piece, matched threads are arranged between the joint body and the connecting body, the clamping sleeve is arranged between the joint body and the connecting body, and the connecting body is matched with the threads of the joint body to press the clamping sleeve. According to the clamping sleeve sealing pipeline movable joint, the multiple layers of annular grooves are formed in the inner wall of the clamping sleeve, due to the fact that the inner wall of the clamping sleeve and the pipeline need to be extruded together, the contact area can be reduced, the contact force can be increased, multi-layer sealing between the inner wall of the clamping sleeve and the outer surface of the pipeline can be achieved, and the better sealing effect is achieved. A sealing groove is formed in the outer wall of the clamping sleeve and used for installing a sealing piece, and the sealing effect between the clamping sleeve and the connector body is improved. And meanwhile, the step part is arranged in the connecting body to abut against the axial end face of the joint body, and the axial end face is equivalent to a limiting boss, so that the connecting body can be prevented from being excessively screwed in the fastening process.

Description

TECHNICAL FIELD

[0001] The utility model relates to pipeline connection technical field especially, relate to a sleeve sealing pipeline union. BACKGROUND

[0002] Union connection mode, at present in the pipeline connection mode in power plant, have extensive application. Union has following advantages: simple structure, convenient to dismount, need not high risk operation such as fire / electricity / flaw detection, etc., on pressure grade not high, medium safety, important grade not high system, have good application scene.

[0003] Current union applied in industry, sleeve sealing union is a commonly used union form. But current sleeve sealing union has following problems in pipeline sealing: first, easy to appear over-tightening and cause sleeve or bolt damage, thereby leading to sealing not strict;Second, sleeve sealing union relies on line contact between metals to realize sealing, if the pipeline where it is located has certain degree of vibration, easy to cause bad line contact, thereby causing leakage. Therefore, a new type of sleeve sealing pipeline union is urgently needed to be developed to solve the problems of current sleeve sealing pipeline union. UTILITY MODEL CONTENTS

[0004] The utility model solves the technical problem that, provide a sleeve sealing pipeline union, to solve the problem that the existing technology is easy to appear over-tightening and cause sleeve or bolt damage, thereby leading to sealing not strict, can also solve the problem that sleeve sealing union relies on line contact between metals to realize sealing, if the pipeline where it is located has certain degree of vibration, easy to cause bad line contact.

[0005] The utility model solves the technical problem and adopts the technical scheme that: construct a sleeve sealing pipeline union, it includes joint body, sleeve, connecting body and sealing element;

[0006] Thread cooperation is arranged between the joint body and the connecting body, the sleeve is arranged between the joint body and the connecting body, the connecting body is pressed tightly by thread cooperation with the joint body, the joint body is equipped with the taper surface of the sleeve outer wall, the outer wall of the sleeve is equipped with the sealing groove, the sealing element is installed in the sealing groove, when the sleeve is in the state of being pressed tightly, the sealing element is abutted on the taper surface;

[0007] The inner wall of the sleeve is equipped with multilayer annular groove;

[0008] The inner wall of the connecting body is equipped with the step portion, and the step portion is used for abutting the axial end surface of the joint body.

[0009] In some embodiments, the inner wall of the connector is provided with an abutting portion for abutting the front end surface of the sleeve, and the abutting portion is located on the side of the step portion facing the front end surface of the sleeve.

[0010] In some embodiments, the number of the sleeve and the connector is two, and the two sleeves and the two connectors are separately arranged on the two sides of the joint body.

[0011] In some embodiments, the depth of the annular groove is 0.2mm to 0.4mm.

[0012] In some embodiments, the number of layers of the annular groove is 4 to 6 layers.

[0013] In some embodiments, the sealing member is an O-shaped sealing ring.

[0014] In some embodiments, the inclination angle between the outer wall surface of the sleeve and the front end surface thereof is 70° to 80°.

[0015] In some embodiments, the length of the sleeve is 5mm to 7mm.

[0016] In some embodiments, the length of the connector is 12mm to 15mm.

[0017] In some embodiments, the length of the joint body is 25mm to 30mm.

[0018] The utility model discloses the following beneficial effects: the sleeve sealing pipeline union is provided with multilayer annular grooves on the inner wall of the sleeve, because the inner wall of the sleeve is to be extruded together with the pipeline, and the multilayer annular grooves can reduce the contact area and increase the contact force, which helps to realize multilayer sealing between the inner wall of the sleeve and the outer surface of the pipeline and achieve better sealing effect. The outer wall of the sleeve is provided with a sealing groove for installing a sealing member, which increases the sealing effect between the sleeve and the joint body. Meanwhile, the step portion is arranged in the connector to abut the axial end surface of the joint body, and the axial end surface is equivalent to a limiting boss, which can prevent the connector from being over-tightened during the tightening process. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical scheme of the utility model, the following will be further described in combination with the drawings and embodiments, and it should be understood that the following drawings only show some embodiments of the utility model, and therefore should not be regarded as a limitation on the scope, and for those skilled in the art, other related drawings can also be obtained without creative labor. In the drawings:

[0020] Figure 1 is the perspective view of the sleeve sealing pipeline union in some embodiments of the utility model.

[0021] Figure 2 is a component exploded view of the clamping sleeve sealing pipe joint in some embodiments of the present application;

[0022] Figure 3 is a structure sectional view of the clamping sleeve sealing pipe joint in some embodiments of the present application;

[0023] Figure 4 is Figure 3 is an enlarged schematic view of position A in the clamping sleeve sealing pipe joint;

[0024] Figure 5 is a structure schematic view of the clamping sleeve in some embodiments of the present application;

[0025] Figure 6 is a structure schematic view of the connecting body in some embodiments of the present application. DETAILED DESCRIPTION

[0026] In order to have a clearer understanding of the technical features, objects and effects of the present application, the specific embodiments of the present application will be described in detail with reference to the drawings. In the following description, it should be understood that the directions or positional relationships indicated by "front", "back", "up", "down", "left", "right", "vertical", "horizontal", "vertical", "horizontal", "top", "bottom", "inner", "outer", "head", "tail" and the like are based on the directions or positional relationships shown in the drawings, constructed and operated in a particular direction, and are only for the convenience of describing the present technical solution, and cannot be understood as indicating that the devices or elements indicated must have a particular direction, therefore, it cannot be understood as a limitation on the present application.

[0027] It should also be noted that, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "fixing", "setting" and the like should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements or the interaction relationship between two elements. When an element is referred to as "on" or "under" another element, the element can be "directly" or "indirectly" located on the other element, or there can be one or more intermediate elements. The terms "first", "second", "third" and the like are only for the convenience of describing the present technical solution, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features, therefore, the features with "first", "second", "third" and the like can be explicitly or implicitly included one or more of the features. For ordinary skilled persons in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0028] Please refer to Figures 1 to 6 It is a kind of clamp sleeve sealing pipe joint in some embodiments of the utility model, it includes joint body 1, clamp sleeve 2, connecting body 3 and sealing element 4.The threaded cooperation of joint body 1 and connecting body 3 is provided, clamp sleeve 2 is arranged between joint body 1 and connecting body 3, connecting body 3 is compressed tightly with clamp sleeve 2 by the threaded cooperation with joint body 1, the taper surface 11 of joint body 1 is provided with the clamp sleeve 2 outer wall, the outer wall of clamp sleeve 2 is provided with sealing groove 21, sealing element 4 is installed in sealing groove 21, when clamp sleeve 2 is in the compressed state, sealing element 4 is abutted on taper surface 11, the inner wall of clamp sleeve 2 is provided with multilayer annular groove 22.The inner wall of connecting body 3 is provided with step part 31, and step part 31 is used for abutting the axial end face of joint body 1.

[0029] Among them, joint body 1 is the fixed interface of pipeline, clamp sleeve 2 is a elastic ring with sharp edge, which is used for embedding pipeline 5 and forming sealing. Connecting body 3 is nut, the working principle of clamp sleeve sealing pipe joint is that clamp sleeve 2 is compressed by the threaded interlocking of inner thread of joint body 1 and outer thread of connecting body 3, so that pipeline 5 is uniformly deformed to achieve the effect of connection and sealing. The sealing element 4 is preferably O-shaped sealing ring.

[0030] It can be understood that the clamp sleeve sealing pipe joint currently mainly exists the problems of clamp sleeve 2 or bolt damage caused by over-tightening and poor sealing contact under vibration environment, thereby causing leakage. In the embodiment, multilayer annular groove 22 is arranged on the inner wall of clamp sleeve 2, because the inner wall of clamp sleeve 2 is to be extruded together with pipeline 5, the multilayer annular groove 22 can reduce the contact area and increase the contact force, which helps to realize multilayer sealing between the inner wall of clamp sleeve 2 and the outer surface of pipeline 5 and achieve better sealing effect. The sealing groove 21 is arranged on the outer wall of clamp sleeve 2 for installing sealing element 4, which increases the sealing effect between clamp sleeve 2 and joint body 1. In addition, step part 31 is arranged in connecting body 3 to abut the axial end face of joint body 1, and the axial end face is equivalent to a limiting boss, which can prevent over-tightening of connecting body 3 during tightening. In general, when pipeline 5 is sleeved on clamp sleeve 2 and connecting body 3 and inserted into joint body 1, tightening connecting body 3 will make the outer side of rear end of clamp sleeve 2 fit with taper surface 11 of joint body 1, and the inner blade of clamp sleeve 2 will be uniformly bitten into pipeline 5, the inner blade of clamp sleeve 2 tightly holds pipeline 5 under the action of pressure, forming a stable and sealed connection structure.

[0031] As Figure 6 shown, the inner wall of connecting body 3 is provided with abutting part 32, and the abutting part 32 is used for abutting the front end face of clamp sleeve 2, so that connecting body 3 can compress clamp sleeve 2 after tightening.

[0032] In the embodiment, the number of the sleeves 2 and the connecting bodies 3 is two, and the two sleeves 2 and the two connecting bodies 3 are arranged separately on the two sides of the joint body 1.

[0033] In addition, the depth of the annular grooves 22 is 0.2-0.4 mm, and the number of layers of the annular grooves 22 is 4-6. Preferably, the depth of the annular grooves 22 is 0.3 mm, and the number of layers of the annular grooves 22 is 5.

[0034] In some embodiments, the angle between the outer wall surface of the sleeve 2 and the front end surface thereof is 70-80°, the length of the sleeve 2 is 5-7 mm, the length of the connecting body 3 is 12-15 mm, and the length of the joint body 1 is 25-30 mm. Preferably, the angle between the outer wall surface of the sleeve 2 and the front end surface thereof is 74.18°, the length of the sleeve 2 is 6 mm, the length of the connecting body 3 is 13.5 mm, and the length of the joint body 1 is 28.8 mm.

[0035] The sleeve sealing pipe joint has the following beneficial effects:

[0036] 1. The inner wall of the sleeve 2 is provided with multiple annular grooves 22, which can reduce the contact area and increase the contact force, so as to realize multi-layer sealing between the inner wall of the sleeve 2 and the outer surface of the pipe 5 and achieve better sealing effect;

[0037] 2. The outer wall of the sleeve 2 is provided with a sealing groove 21 for installing the sealing member 4, which increases the sealing effect between the sleeve 2 and the joint body 1;

[0038] 3. The connecting body 3 is provided with a stepped portion 31 inside for abutting against the axial end surface of the joint body 1, which is equivalent to a limiting boss and can prevent the connecting body 3 from being over-tightened during the tightening process.

[0039] It can be understood that the above embodiments only express the preferred embodiments of the present application, and the description is more specific and detailed, but it cannot be understood as a limitation on the scope of the present application. It should be pointed out that for ordinary skilled persons in the art, the above technical features can be freely combined without departing from the concept of the present application, and some deformations and improvements can be made, which all belong to the protection scope of the present application. Therefore, any equivalent transformation and modification within the scope of the claims of the present application should belong to the scope of the claims of the present application.

Claims

1. A push to connect fitting for sealing a pipe joint, comprising: The joint body (1), the sleeve (2), the connecting body (3) and the sealing element (4) are provided. The joint body (1) and the connecting body (3) are provided with a thread matched with each other, the sleeve (2) is arranged between the joint body (1) and the connecting body (3), the connecting body (3) is pressed against the sleeve (2) by thread matching with the joint body (1), the joint body (1) is provided with a clamping taper surface (11) corresponding to the outer wall of the sleeve (2), the outer wall of the sleeve (2) is provided with a sealing groove (21), the sealing element (4) is installed in the sealing groove (21), and the sealing element (4) abuts against the clamping taper surface (11) when the sleeve (2) is in a pressed state. The inner wall of the sleeve (2) is provided with a plurality of annular grooves (22). The inner wall of the connecting body (3) is provided with a stepped portion (31) for abutting against the axial end face of the joint body (1).

2. The push to connect fitting of claim 1, wherein, The inner wall of the connecting body (3) is provided with an abutting portion (32) for abutting against the front end face of the sleeve (2), and the abutting portion (32) is arranged on the side of the stepped portion (31) facing the front end face of the sleeve (2).

3. The push to connect fitting of claim 1, wherein, The number of the sleeve (2) and the connecting body (3) is two, and the two sleeves (2) and the two connecting bodies (3) are arranged on the two sides of the joint body (1) respectively.

4. The push to connect fitting of claim 1, wherein, The depth of the annular groove (22) is 0.2mm to 0.4mm.

5. The push-to-connect fitting of claim 1, wherein: The number of layers of the annular groove (22) is 4 to 6.

6. The push-to-connect fitting of claim 1, wherein: The sealing element (4) is an O-shaped sealing ring.

7. The push-to-connect fitting of claim 1, wherein: The inclination angle between the outer wall surface of the sleeve (2) and the front end face thereof is 70° to 80°.

8. The push-to-connect fitting of claim 1, wherein: The length of the sleeve (2) is 5mm to 7mm.

9. The push-to-connect fitting of claim 1, wherein: The length of the connecting body (3) is 12mm to 15mm.

10. The push-to-connect fitting of claim 1, wherein: The length of the joint body (1) is 25mm to 30mm.

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