CN219472978U - Leakage-proof device for pipeline joint - Google Patents

Abstract

The utility model provides a pipeline interface leak protection device, including inner circle and outer lane, the inner circle is formed by a plurality of sealing blocks end to end combination, and the parcel is in the interface department of two pipelines, one side that the sealing block was towards the centre of a circle all sets up to two slope and mutual symmetry's inclined plane towards the centre, the corresponding annular inclined plane of inclined plane on the sealing block is all seted up to the interface department of pipeline, the interface department of two pipelines sets up annular sealing washer, the outer lane parcel is in the outside of inner circle, and can compress tightly the inner circle, when tightening up the inner circle, can extrude the pipeline through the inclined plane, make two pipelines draw close towards the interface department centre, thereby can compress tightly the sealing washer that is located the centre, play sealed effect, make the inside liquid or the gas of pipeline be difficult for revealing.

Description

A leak-proof device for pipeline joints

technical field

The utility model relates to the field of pipeline leakage prevention, in particular to a pipeline interface leakage prevention device.

Background technique

Pipeline is a common device for transporting flowing substances. It is widely used in the transportation of oil and natural gas, agricultural irrigation, hydraulic engineering and various industrial devices. Due to the different distances and lengths, it is usually necessary to connect two sections of pipelines. Leakage at the interface of the pipeline is Very common question.

The utility model patent with the publication number CN210069177U discloses a secondary sealing device for pipeline leakage prevention interface, including a first outer frame, a second outer frame, a first pipeline and a second pipeline, and the first pipeline and the second pipeline Connected by sealing rings, the outer sides of the adjacent ends of the first pipe and the second pipe are provided with limiting grooves, the first snap rings are fixed on both sides of the lower end surface of the first outer frame, and the second outer Both sides of the upper end surface of the frame are fixed with second snap rings, and both ends of the second outer frame are provided with screw holes, the screw holes are threaded with fixing screws, and the middle of the lower end surface of the first outer frame A rubber layer is fixed at the middle of the upper end surface of the second outer frame, and the two limit grooves are matched with the first snap ring and the second snap ring after the combination of the snap ring. This design can carry out two Secondary sealing, so as to improve the sealing effect, but the device requires high dimensional processing accuracy. If the dimensional accuracy is low, such as when the position of the limit groove is small, it is easy to cause gaps in the pipe connection, which may cause leakage at the interface. If the position of the limit groove is large, it is easy to cause the snap ring to be unable to be installed.

Utility model content

In order to solve the deficiencies in the prior art, the utility model provides a leak-proof device for pipeline joints.

The technical solution of the utility model is: a pipeline interface leak-proof device, including an inner ring and an outer ring, characterized in that the inner ring is composed of a plurality of sealing blocks connected end to end, and wrapped at the interface of two pipelines, The side of the sealing block facing the center of the circle is set as two slopes that are inclined to the middle and are symmetrical to each other. The interface of the pipes is provided with an annular slope corresponding to the slope on the sealing block, and an annular sealing ring is set at the interface of the two pipes. , the outer ring wraps the outer side of the inner ring and can compress the inner ring.

Further, a triangular outer groove is provided on the outward side of one end of the sealing block, and a triangular inner groove is provided on the inner side of the other end of the sealing block, and the outer groove and the inner groove can be mutually connected. Cooperate so that the sealing block can be combined into a complete inner ring.

Further, the outer ring includes two semicircular fastening blocks, one of the end faces of the fastening blocks is provided with threaded holes, and the other end of the fastening blocks is provided with stepped through holes, so that the two fastening blocks One end of the stepped through hole is opposite to one end of the threaded through hole, and bolts pass through the stepped through hole, and the bolts all extend into corresponding threaded holes and are threadedly connected thereto.

Further, there are two threaded holes and stepped through holes on the fastening block.

Further, the number of the sealing blocks is two, and the sealing blocks are all semicircular.

The utility model provides an anti-leakage device for a pipeline interface. The beneficial effect of the device is that: the device sets a slope on the side of the inner ring facing the center of the circle, and sets a corresponding annular slope at the interface of the pipeline, so that the inner ring is in the When it is tightened, the pipe can be squeezed through the inclined surface, so that the two pipes can move closer to the middle of the joint, so that the sealing ring in the middle can be pressed tightly to play a sealing role, so that the liquid or gas inside the pipe is not easy to leak. This design can Make the sealing ring use its own elastic force to squeeze tightly on the pipe joint, thereby improving the sealing effect at the pipe joint and reducing the risk of leakage at the pipe joint, and the design structure is simple, the processing size is low, It is more convenient for workers to install, and the installation efficiency is higher.

Description of drawings

Fig. 1 is a structural representation of one of the embodiments of the present utility model;

Fig. 2 is an enlarged schematic diagram of the local structure at I in Fig. 1;

Fig. 3 is a schematic diagram of the state structure when the embodiment is in use.

Detailed ways

In order to make it easier for those skilled in the art to understand the utility model, the specific implementation of the utility model will be described below in conjunction with the accompanying drawings.

In the description of this application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" etc. The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, or in a specific orientation. construction and operation, therefore, should not be construed as limiting the invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and should not be construed as indicating or implying relative importance.

In the description of this application, it should be noted that unless otherwise specified and limited, the terms "installation", "connection", and "connection" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection. Connected, or integrally connected; it can be mechanically connected or electrically connected; it can be directly connected or indirectly connected through an intermediary, and it can be the internal communication of two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in this application in specific situations.

The utility model provides a pipeline interface leak-proof device, as shown in Figure 1 to Figure 3 is an embodiment of the utility model, including an inner ring and an outer ring, the inner ring is composed of two semicircular sealing blocks 1 The end-to-end combination is formed. One end of the sealing block 1 facing outward is provided with a triangular outer groove 2, and the other end of the sealing block 1 facing inward is provided with a triangular inner groove 3 and outer groove 2. It can cooperate with the inner groove 3, so that the two sealing blocks 1 are combined into a complete inner ring, and the outer ring includes two semi-circular fastening blocks 4, and the two fastening blocks 4 form a complete outer ring. and wrapped around the outside of the inner ring.

As shown in Figures 1 and 2, one of the end faces of the fastening block 4 is provided with two threaded holes 5, and the other end face of the fastening block 4 is provided with two stepped through holes 6, and the position of the stepped through holes 6 is in line with the screw thread. The positions of the through holes 5 are corresponding, so that one end of the stepped through hole 6 on the two fastening blocks 4 is opposite to one end of the threaded through hole 5, and a bolt 7 passes through the stepped through hole 6, and the bolt 7 all extends into the corresponding thread Hole 5, and threaded connection with it, so that the two fastening blocks are combined into a complete outer ring.

As shown in Figure 3, the side of the sealing block 1 facing the center of the circle is set as two slopes that are inclined to the middle and are symmetrical to each other, and the interface of the pipeline 90 is provided with an annular slope 8 corresponding to the slope on the sealing block 1. An annular sealing ring 9 is arranged at the interface of the two pipelines 90. When the sealing block is wrapped around the interface of the two pipelines and folded towards the middle, under the interaction of the inclined surface on the sealing block and the annular inclined surface on the pipeline, the two pipelines will Close to the direction of the sealing ring, and squeeze the sealing ring, the sealing ring will be tightly pressed against the joint of the two pipes under the action of its own elasticity, so as to play a sealing role.

To sum up, when this device is used, first place the sealing ring at the joint of the two pipes, and then wrap the two sealing blocks of the inner ring at the joint of the two pipes, so that the inner groove on the sealing block Cooperate with the outer groove, and then wrap the two fastening blocks of the outer ring on the outside of the inner ring, make the stepped through hole on the fastening block align with the threaded hole on the other fastening block, and put the bolt through Screw it into the threaded hole through the stepped through hole. With the tightening of the bolt, the outer ring gradually shrinks and squeezes the inner ring. The joint between the inner groove and the outer groove on the fastening block is squeezed, and the inner groove and the Under the action of the inclined surface at the matching part of the outer groove, the inner ring will also gradually shrink, and the annular inclined surface at the joint of the two pipes will be squeezed through the inclined surface of the fastening block toward the center of the circle, so that the two pipes will be squeezed towards the sealing ring. Under the action of its own elastic force, the sealing ring is tightly pressed against the joint of the two pipes, so as to play a sealing role.

This device sets a slope on the side of the inner ring facing the center of the circle, and sets up a corresponding annular slope at the joint of the pipe, so that when the inner ring is tightened, the pipe can be squeezed through the slope, so that the two pipes move closer to the middle of the joint , so that the sealing ring in the middle can be pressed tightly to play a sealing role, so that the liquid or gas inside the pipeline is not easy to leak. This design can make the sealing ring use its own elastic force to squeeze tightly on the pipe joint, thereby improving The sealing effect at the pipe joint is improved, the risk of leakage at the pipe joint is reduced, and the design structure is simple, the processing size requirement is low, the installation is more convenient for workers, and the installation efficiency is high.

The embodiments of the utility model described above do not constitute a limitation to the protection scope of the utility model. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present utility model shall be included in the protection scope of the claims of the present utility model.

Claims (5)

1. The utility model provides a pipeline interface leak protection device, includes inner circle and outer lane, its characterized in that: the inner ring is formed by combining a plurality of sealing blocks end to wrap the joint of two pipelines, one side of the sealing block facing the circle center is provided with two inclined planes which incline towards the middle and are symmetrical with each other, the joint of the pipelines is provided with an annular inclined plane corresponding to the inclined plane on the sealing block, the joint of the two pipelines is provided with an annular sealing ring, and the outer ring wraps the outer side of the inner ring and can compress the inner ring.

2. The pipe joint leakage prevention device according to claim 1, wherein: the sealing block is characterized in that one side of one end of the sealing block facing outwards is provided with a triangular outer groove, the other side of the other end of the sealing block facing inwards is provided with a triangular inner groove, and the outer groove and the inner groove can be matched with each other, so that the sealing block can be combined into a complete inner ring.

3. The pipe joint leakage prevention device according to claim 1, wherein: the outer ring comprises two semicircular annular fastening blocks, one end face of each fastening block is provided with a threaded hole, the other end face of each fastening block is provided with a step through hole, one end of each step through hole on each fastening block is opposite to one end of each threaded through hole, bolts penetrate through the step through holes, and the bolts extend into the corresponding threaded holes and are in threaded connection with the corresponding threaded holes.

4. A pipe joint leakage prevention apparatus according to claim 3, wherein: the number of the threaded holes and the step through holes on the fastening block is two.

5. The pipeline joint leakage prevention device according to any one of claims 1 to 4, wherein: the number of the sealing blocks is two, and the sealing blocks are all semicircular.