CN217815547U

CN217815547U - Natural gas line prevents leaking device

Info

Publication number: CN217815547U
Application number: CN202221792216.2U
Authority: CN
Inventors: 陈永理; 胡琨; 郭强
Original assignee: Beijing Oil And Gas Transmission Branch Of State Grid Beijing Pipeline Co ltd
Current assignee: Beijing Oil And Gas Transmission Branch Of State Grid Beijing Pipeline Co ltd
Priority date: 2022-07-12
Filing date: 2022-07-12
Publication date: 2022-11-15
Anticipated expiration: 2032-07-12

Abstract

The utility model provides a natural gas line prevents leaking device, includes first pipeline and second pipeline, is equipped with first flange on first pipeline, and the second pipeline is equipped with the second flange. The first flange and the second flange are connected through the fastening assembly, a first connecting portion is arranged at one end of the first flange, opposite to the first pipeline, a first connecting groove corresponding to the first connecting portion is formed in one end of the second flange, opposite to the second pipeline, and a first sealing ring is placed in the first connecting groove. The outside that lies in first connecting portion on the first flange is equipped with the second connecting portion, is equipped with the leak protection subassembly on the second flange, and the second connecting portion cooperates with the leak protection subassembly, and the sealed effect of multiplicable first flange and second flange to prevent revealing of natural gas in the pipeline. The utility model discloses a set up the leak protection subassembly, can implement sealedly to first flange and second flange, prevent that the natural gas line junction from appearing the leakage problem, reduce the waste of natural gas, and to the cost of maintenance of natural gas line junction.

Description

Natural gas line prevents leaking device

Technical Field

The utility model belongs to the pipeline prevents leaking the field, especially relates to a natural gas line prevents leaking device.

Background

Natural gas is a combustible gas existing in nature, is a fossil fuel, is mainly used as a fuel, can be used for producing carbon black, chemicals and liquefied petroleum gas, and is an important raw material for modern industry. The natural gas is generally conveyed by a natural gas pipeline, and the natural gas pipeline has the advantages of low transportation cost, small occupied area, quick construction, large oil and gas transportation amount, high safety performance, less transportation loss, no three-waste discharge, small leakage risk, small environmental pollution, small adverse weather influence, small equipment maintenance amount, convenience in management, easiness in remote centralized monitoring and the like.

However, a natural gas transmission line is generally formed by combining a plurality of natural gas pipelines, sometimes, the joint of the natural gas pipelines is not tightly sealed, so that the problem of natural gas leakage can occur at the joint after the natural gas has pressure inside, the leaked natural gas can affect the air quality, and the waste of the natural gas can be caused. And the leakage of natural gas can also cause local pressure loss and influence the conveying efficiency.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a natural gas line prevents leaking device to solve the technical problem that the natural gas line junction leaked.

In order to achieve the above object, the utility model discloses a natural gas line prevents leaking device's concrete technical scheme as follows:

a natural gas pipeline leakage-proof device comprises a first pipeline and a second pipeline, wherein a first flange is arranged on the first pipeline, a second flange is arranged on the second pipeline, the first flange and the second flange are connected through a fastening assembly, a first connecting part is arranged at one end, opposite to the first pipeline, of the first flange, a first connecting groove corresponding to the first connecting part is formed at one end, opposite to the second pipeline, of the second flange, and a first sealing ring is placed in the first connecting groove; the outside that lies in first connecting portion on the first flange is equipped with the second connecting portion, is equipped with the leak protection subassembly on the second flange, and the second connecting portion cooperates with the leak protection subassembly, and the sealed effect of multiplicable first flange and second flange to prevent revealing of natural gas in the pipeline.

The utility model discloses a natural gas line prevents leaking device has following advantage:

1. the utility model discloses a set up the leak protection subassembly, can implement sealedly to first flange and second flange, prevent that the natural gas line junction from appearing the leakage problem, reduce the waste of natural gas, and to the cost of maintenance of natural gas line junction.

2. This use is novel through setting up fastening components, can prevent that not hard up problem from appearing in the bolt under the natural gas line vibrations condition, makes bolt and fastening block be in the fastening state always.

Drawings

Fig. 1 is a schematic structural view of a natural gas pipeline leakage-proof device of the present invention;

fig. 2 is a half sectional view of a first pipe and a first flange of the present invention;

fig. 3 is a half sectional view of a second pipe and a second flange of the present invention;

fig. 4 is an enlarged view of a point a in fig. 3.

The symbols in the figure illustrate:

1. a first pipe; 2. a second pipe; 3. a first flange; 4. a second flange; 5. a first connection portion; 501. a second connecting portion; 6. a protrusion; 7. a first connecting groove; 8. a first seal ring; 801. a groove; 9. a leak-proof assembly; 901. a second connecting groove; 902. a second seal ring; 10. a fastening assembly; 1001. A stepped hole; 1002. a spring; 1003. a fastening block; 1004. and (4) bolts.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention more clearly understood, the present invention will be described in further detail with reference to the accompanying drawings and detailed description. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.

A natural gas pipeline leakage prevention device according to some embodiments of the present invention will be described with reference to fig. 1 to 4.

As shown in fig. 1, according to the utility model discloses a natural gas line prevents leaking device that some embodiments provided, including first pipeline 1 and second pipeline 2, the natural gas circulates in first pipeline 1 and second pipeline 2. And be equipped with first flange 3 and second flange 4 on the both ends of first pipeline 1 and second pipeline 2 respectively, place sealed the pad between first flange 3 and the second flange 4 and connect through fastening component 10 later, realize the sealing connection to first pipeline 1 and second pipeline 2 for when the natural gas circulates in the pipeline, can not take place the leakage problem.

Specifically, as shown in fig. 2 and 3, a first connecting portion 5 is provided on the right end of the first flange 3, and a first connecting groove 7 is provided on the left end of the second flange 4, the first connecting groove 7 and the first connecting portion 5 being provided correspondingly, so that the first connecting portion 5 is inserted into the first connecting groove 7. In order to increase the sealing effect when the first connection portion 5 is inserted into the first connection groove 7, a first sealing ring 8 is placed in the first connection groove 7. First sealing washer 8 is the rubber material, and is concrete, and the partial size of length direction in first connecting groove 7 has been taken up in placing of first sealing washer 8, and first connecting portion 5 length and first connecting groove 7 length are mutually supported. Therefore, when the first connection portion 5 is inserted into the first connection groove 7 again, the top end of the first connection portion 5 firstly contacts the first seal ring 8, and then the first flange 3 and the second flange 4 are compressed through the fastening assembly 10, so that the first connection portion 5 compresses the first seal ring 8 through the first flange 3, the first seal ring 8 is made of rubber, and can be automatically adjusted after receiving a compression force, so that the first connection portion 5 is more sufficiently connected with the first seal ring 8, and leakage of natural gas from the joint of the first connection portion 5 and the first seal ring 8 is avoided.

Preferably, a protrusion 6 is further disposed on a middle portion of a right end of the first connecting portion 5, the protrusion 6 is arc-shaped, and a groove 801 is disposed at an end of the first sealing ring 8 corresponding to the first connecting portion 5. Specifically, the groove 801 is matched with the protrusion 6 in shape, but the size of the protrusion 6 is slightly larger than that of the groove 801, and the free end of the protrusion 6 is arc-shaped, so that the stress of the protrusion 6 on the groove 801 can be reduced, the damage of the first sealing ring 8 is reduced, and the service life of the first sealing ring 8 is prolonged. When the protrusion 6 is inserted into the groove 801.

As another preferred mode, as shown in fig. 2, fig. 3 and fig. 4, a second connecting portion 501 is disposed on the right end face of the first flange 3 and outside the first connecting portion 5, and a leakage-proof assembly 9 is disposed on the left end of the second flange 4, and the second connecting portion 501 is matched with the leakage-proof assembly 9, so that the sealing effect of the first flange 3 and the second flange 4 can be increased, and the first flange 3 and the second flange 4 can be secondarily sealed, thereby achieving the purpose of preventing natural gas in the pipeline from leaking. Wherein, leak protection subassembly 9 includes second spread groove 901 that opens on the second flange 4 left end face to be equipped with second sealing washer 902 in second spread groove 901 maximum diameter surface, second connecting portion 501 can insert and establish in second spread groove 901, and second connecting portion 501 is interference fit with second sealing washer 902.

Specifically, the cross section of the second sealing ring 902 is a triangular sealing ring which is arranged from left to right in an inclined manner, as shown in fig. 4, so that the second sealing ring 902 is not damaged when the second connecting portion 501 is inserted into the second connecting groove 901. The first connecting portion 5 and the second connecting portion 501 are both cylindrical. Of course, the first connecting portion 5 and the second connecting portion 501 may be provided in a ring shape in addition to being cylindrical, and the first connecting portion 5 and the second connecting portion 501 may also be sealed with respect to the first sealing ring 8 and the second sealing ring 902 in the corresponding first connecting groove 7 and the second connecting groove 901.

The maximum outer circle of the second connecting portion 501 is smaller than the maximum outer edge of the second connecting groove 901, and the maximum outer circle of the second connecting portion 501 is larger than the inner diameter of the second sealing ring 902, so that the second sealing ring 902 can be prevented from being damaged under the action of the second connecting portion 501 under the condition that the two connecting portions are connected to have a good sealing condition. And when second connecting portion 501 inserted in second spread groove 901, second sealing washer 902 can take place the deformation of its bottom leanin under the effect of second connecting portion 501, leak from first connecting portion 5 and first spread groove 7 in if the natural gas carelessly, the natural gas of leakage alright be blockked under the effect of second connecting portion 501 with second sealing washer 902, the effect of preventing the natural gas from leaking from the natural gas line has been played, make the natural gas line possess two-layer sealed protection, reduce the cost of maintenance in later stage.

As a further improvement, as shown in fig. 2 and 3, the fastening assembly 10 includes a stepped hole 1001 distributed on the first flange 3, a fastening block 1003 slidably disposed in the stepped hole 1001, a spring 1002 disposed between the fastening block 1003 and the stepped hole 1001, one end of the spring 1002 being fixed to an inner wall of the stepped hole 1001, the other end being fixed to the fastening block 1003, and a bolt 1004 inserted in the stepped hole 1001, the fastening block 1003 being in threaded connection with the bolt 1004. In order to connect the first flange 3 and the second flange 4, through holes through which the adaptive bolts 1004 penetrate are distributed on the second flange 4, and the through holes and the stepped holes 1001 are distributed correspondingly.

The stepped hole 1001 is formed by a large hole and a small hole, and the large hole is a square hole, that is, the fastening block 1003 is square. When the bolt 1004 is connected to the fastening block 1003, the stepped hole 1001 can limit the fastening block 1003, thereby improving the convenience of assembling the fastening assembly 10. When the bolts 1004 are screwed to the fastening blocks 1003, the fastening blocks 1003 and the bolts 1004 are in threaded connection, and the bolts 1004 do not displace on the second flange 4, so that the fastening blocks 1003 begin to displace and compress the springs 1002, and after the first flange 3 and the second flange 4 are installed, the springs 1002 are always in a compressed state and support the fastening blocks 1003 outwards. Because of the natural gas circulates in the pipeline or when opening and close the switch on the pipeline, the natural gas can produce vibrations and water hammer phenomenon to the pipeline, and the effect of spring 1002 can prevent that bolt 1004 is not hard up this moment. The number of the fastening assemblies 10 is preferably 4, and the fastening assemblies can be selectively installed according to the application, and are not limited herein.

In the present application, the terms "first", "second", "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance: the term "plurality" means two or more unless expressly limited otherwise. The terms "mounted," "connected," "fixed," and the like are to be construed broadly, and for example, "connected" may be a fixed connection, a removable connection, or an integral connection; "connected" may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The natural gas pipeline leakage preventing device is characterized by comprising a first pipeline (1) and a second pipeline (2), wherein a first flange (3) is arranged on the first pipeline (1), a second flange (4) is arranged on the second pipeline (2), the first flange (3) and the second flange (4) are connected through a fastening assembly (10), a first connecting part (5) is arranged at one end, opposite to the first pipeline (1), of the first flange (3), a first connecting groove (7) corresponding to the first connecting part (5) is formed in one end, opposite to the second pipeline (2), of the second flange (4), a first sealing ring (8) is placed in the first connecting groove (7), and the first connecting part (5) can be inserted into the first connecting groove (7) and connected with the first sealing ring (8);

the outer side of the first connecting portion (5) on the first flange (3) is provided with a second connecting portion (501), the second flange (4) is provided with a leakage-proof assembly (9), the second connecting portion (501) is matched with the leakage-proof assembly (9), and the sealing effect of the first flange (3) and the second flange (4) can be increased so as to prevent leakage of natural gas in the pipeline.

2. A natural gas pipeline leakage prevention apparatus, as per claim 1, wherein: leak protection subassembly (9) include second flange (4) second pipeline (2) one end second spread groove (901) of opening to be equipped with second sealing washer (902) in second spread groove (901) maximum diameter surface, second connecting portion (501) can insert and establish in second spread groove (901), and second connecting portion (501) are interference fit with second sealing washer (902).

3. A leakage preventing device for natural gas pipeline according to claim 2, characterized in that said second connecting portion (501) is cylindrical, and the outer circle of the second connecting portion (501) is larger than the inner diameter of the second sealing ring (902).

4. A leakage preventing device for a natural gas pipeline according to claim 1, characterized in that a protrusion (6) is provided on a free end of the first connecting portion (5), a groove (801) is provided on an end of the first sealing ring (8) corresponding to the first connecting portion (5), and the protrusion (6) can be inserted into the groove (801).

5. The natural gas pipeline leakage preventing device according to claim 1, wherein the fastening assembly (10) comprises stepped holes (1001), springs (1002), fastening blocks (1003) and bolts (1004), the stepped holes (1001) are distributed on the first flange (3), the fastening blocks (1003) are arranged in the stepped holes (1001) in a sliding mode, the springs (1002) are arranged between the fastening blocks (1003) and the stepped holes (1001), the bolts (1004) can be inserted into the stepped holes (1001), the fastening blocks (1003) and the bolts (1004) are in threaded connection, through holes through which the adaptive bolts (1004) penetrate are distributed in the second flange (4), and the through holes and the stepped holes (1001) are distributed correspondingly.