CN218625441U

CN218625441U - Anti-leakage stop valve for natural gas pipeline

Info

Publication number: CN218625441U
Application number: CN202222057760.9U
Authority: CN
Inventors: 刘浩
Original assignee: Langfang Ruihua Petrochemical Co ltd
Current assignee: Langfang Ruihua Petrochemical Co ltd
Priority date: 2022-08-05
Filing date: 2022-08-05
Publication date: 2023-03-14
Anticipated expiration: 2032-08-05

Abstract

The utility model discloses a prevent leaking stop valve for natural gas line, including valve body and pipeline, valve body top fixedly connected with method dish one, method dish one top is provided with method dish two, two top fixedly connected with fixed blocks are coiled to the method, the inside threaded connection of fixed block has the valve rod, valve rod top fixedly connected with handle, valve body one side symmetric thread connection has the thread tightening sleeve, the inside symmetric fixedly connected with sealing ring of valve body, the gap between one side of shutoff pipeline and the valve body internal face improves sealed leak-proof effect, rotates the valve rod and makes rubber activity section of thick bamboo and valve gap move about from top to bottom, alright with accomplish the natural gas and prevent leaking the transport, and then realize sealed effect, avoid leading to leaking because of the unable abundant in close contact between pipeline and the valve body inner wall of screw thread existence gap, lead to the leakage to sealed effect is better, convenience simple to use.

Description

Anti-leakage stop valve for natural gas pipeline

Technical Field

The utility model belongs to the technical field of the stop valve, concretely relates to prevent leaking stop valve for natural gas line.

Background

The stop valve is also called as a stop valve, is one of the most widely used valves, is popular because the friction force between sealing surfaces is small in the opening and closing process, is durable, the opening height is small, the manufacture is easy, the maintenance is convenient, the stop valve is suitable for medium and low pressure and high pressure, and the closing principle of the stop valve is that the sealing surface of a valve clack is tightly attached to the sealing surface of a valve seat by the pressure of a valve rod to prevent the medium from flowing.

The thread that current prevents leaking the stop valve with the pipeline through above installs it in the valve body to realize sealed effect, but have the gap between the thread, the unable in close contact with of valve body and pipeline leads to sealed effect not good, takes place the condition of leaking very easily.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to overcome current defect, provide a prevent leaking stop valve for natural gas line to solve the current thread of preventing leaking stop valve that proposes in the above-mentioned background art and installing it in the valve body with the pipeline through above, with the realization sealed effect, but have the gap between the thread, valve body and the unable in close contact with of pipeline lead to sealed effect not good, take place the problem of the condition of leaking very easily.

In order to achieve the above purpose, the utility model provides a following technical scheme: the utility model provides a prevent leaking stop valve for natural gas line, includes valve body, pipeline and a rubber movable cylinder, valve body top fixedly connected with method dish one, method dish one top is provided with method dish two, two top fixedly connected with fixed blocks of method dish, the inside threaded connection of fixed block has the valve rod, valve rod top fixedly connected with handle, valve body one side symmetric thread connection has the screw thread fixed sleeve, the inside symmetric fixedly connected with sealing ring of valve body, valve rod bottom fixedly connected with thread bush, thread bush outside threaded connection has the valve gap, the valve gap bottom is provided with the clamp plate.

Preferably, the first flange and the second flange are fixedly connected with the nut through bolts.

Preferably, the upper end of the inner part of the first flange and the lower end of the inner part of the second flange are provided with sealing rings.

Preferably, an elastic guide block is fixedly connected to the outer side of the valve rod.

Preferably, one side of the interior of the thread fixing sleeve is fixedly connected with a sealing ring, and the inner side of the valve body is fixedly connected with a pipeline through the thread fixing sleeve.

Preferably, the sealing surface is fixedly connected inside the valve cover.

Preferably, the pressure plate and the valve cover are fixedly connected through bolts.

Preferably, the rubber movable cylinder is connected with the upper end of the valve rod in the valve body in a sliding mode.

Compared with the prior art, the utility model provides a prevent leaking stop valve for natural gas line possesses following beneficial effect:

1. the utility model discloses a set up the thread tightening sleeve, the thread tightening sleeve inboard is provided with the sealing washer, fix the pipeline in the inboard of thread tightening sleeve and sealing washer, drive the pipeline card with the thread tightening sleeve and realize the shutoff in the sealing washer inboard, then accomplish the pipe connection in the outside of valve body through thread tightening sleeve threaded connection, laminate the pipeline in one side of the sealing ring that the valve body inboard set up, the gap between one side of shutoff pipeline and the valve body internal wall improves the effect of sealed leak protection, rotate the valve rod and make rubber movable cylinder and valve gap go on the activity from top to bottom, can accomplish the leak-proof transport with the natural gas, and then realize the sealing effect, avoid because of the screw thread exists the gap and can't fully make close contact between pipeline and the valve body inner wall, lead to the leakage, thereby the sealing effect is better, and is simple and convenient to use;

2. the utility model discloses a setting is through setting up a rubber movable cylinder and sealed face, and the valve rod carries out the tilting under the effect of handle, and when closing, the sealed face that sets up can carry out in close contact with the inside guide block of valve body, seals from the inner, further improves sealed effect, avoids appearing the condition of leaking.

The part that does not relate to among the device all is the same with prior art or can adopt prior art to realize, the utility model has the advantages of being scientific and reasonable in structure, convenience safe in utilization provides very big help for people.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description, do not constitute a limitation of the invention, in which:

fig. 1 is a schematic view of an axial measurement structure of one side of a leakage-proof stop valve for a natural gas pipeline according to the present invention;

fig. 2 is a schematic structural view of a thread fixing sleeve of a leakage-proof stop valve for a natural gas pipeline according to the present invention;

fig. 3 is a schematic structural view of an elastic guide block of a leakage-proof stop valve for a natural gas pipeline according to the present invention;

fig. 4 is a schematic cross-sectional view of a leakage-proof stop valve for a natural gas pipeline according to the present invention;

in the figure: the valve comprises a valve body 1, a first flange 2, a second flange 3, a bolt 4, a fixed block 5, a handle 6, a valve rod 7, a nut 8, an elastic guide block 9, a sealing ring 10, a pipeline 11, a thread fixing sleeve 12, a rubber movable cylinder 13, a thread sleeve 14, a valve cover 15, a pressure plate 16, a sealing surface 17 and a sealing ring 18.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-4, the present invention provides a technical solution: the utility model provides a prevent leaking stop valve for natural gas line, including valve body 1, pipeline 11 and rubber

movable cylinder

13, 1 top fixedly connected with method dish one 2 of valve body, 2 tops of method dish are provided with method dish two 3, can make things convenient for better connect between the pipeline, the dismouting is more convenient, two 3 top fixedly connected with fixed block 5 of method dish, 5 inside threaded connection of fixed block has

valve rod

7, 7 top fixedly connected with handle 6 of valve rod, can open or close valve rod 7 to 1 inside of valve body through

rotatory handle

6, 1 one side symmetric thread connection of valve body has thread fixing sleeve 12, thread fixing sleeve 12 and sealing washer 10 drive pipeline 11 to the motion of 1 inside gap department of valve body, realize the shutoff in the gap with the inside sealing washer 10 card that sets up of

thread fixing sleeve

12, 1 inside symmetric fixedly connected with sealing ring 18 of valve body, the gap between one side of shutoff outside pipeline 11 and the 1 internal face of valve body, seal from the inner, further improve sealed effect, 7 bottom fixedly connected with thread bush 14 of valve rod, 14 outside threaded connection has valve gap 15, valve gap 15 bottom is provided with clamp plate 16.

The utility model discloses in, preferred, the law is coiled one 2 and is coiled two 3 through bolt 4 and nut 8 fixed connection.

The utility model discloses in, preferred, the inside upper end of law dish 2 and the inside lower extreme of law dish two 3 are provided with sealing washer 10, can play sealed effect effectively.

The utility model discloses in, preferred, valve rod 7 outside fixed connection has elastic guide block 9.

The utility model discloses in, preferred, the inside one side fixedly connected with sealing washer 10 of

thread tightening sleeve

12, 12 fixedly connected with pipelines 11 of thread tightening sleeve are passed through to the inboard of valve body 1, realize the shutoff in the gap with the inside sealing washer 10 card that sets up of thread tightening sleeve 12.

The utility model discloses in, preferred, the sealed face 17 of the inside fixedly connected with of valve gap 15 can play double seal's effect.

In the utility model discloses in, preferably, clamp plate 16 and valve gap 15 pass through bolt 4 fixed connection.

The utility model discloses in, preferred, rubber movable cylinder 13 is located the inside upper end sliding connection of valve body 1 through valve rod 7.

The utility model discloses a theory of operation and use flow: when the sealing device is used, a worker fixedly connects a pipeline 11 to the inner side of a thread fixing sleeve 12, the inner side of the thread fixing sleeve 12 is provided with a sealing ring 10, the thread fixing sleeve 12 drives the pipeline 11 to be clamped into the inner side of the sealing ring 10 under the matching of the sealing ring 10 to realize plugging, then the thread fixing sleeve 12 is in threaded connection with the outer side of a valve body 1 to complete pipeline connection, the pipeline 11 is attached to one side of a sealing ring 18 arranged on the inner side of the valve body 1 to plug a gap between one side of the pipeline 11 and the inner wall surface of the valve body 1, the sealing and leakage-proof effects are improved, when the valve is closed, a valve cover 15 is tightly attached to a guide block at the inner end of the valve body 1, the sealed face 17 that sets up in 15 bottoms of valve gap can realize the secondary seal, prevent the phenomenon of gas leakage, when opening the valve, will drive valve rod 7 through handle 6 and rotate, the inside elastic guide block 9 that sets up of fixed block 5 improves the guidance quality for valve rod 7 when sealed, and the rubber movable cylinder 13 of the lower extreme setting in the valve rod 7 outside, can move about from top to bottom and make the improvement sealed effect, and then realize sealed effect, avoid having unable abundant in close contact with between pipeline 11 and the 1 inner wall of valve body because of the screw thread existence gap, lead to leaking, thereby sealed effect is better, and is simple and convenient to use.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A prevent leaking stop valve for natural gas line, includes valve body (1), pipeline (11) and rubber movable cylinder (13), its characterized in that: valve body (1) top fixedly connected with method dish (2), method dish (2) top is provided with method dish two (3), method dish two (3) top fixedly connected with fixed block (5), fixed block (5) internal thread is connected with valve rod (7), valve rod (7) top fixedly connected with handle (6), valve body (1) one side symmetrical threaded connection has thread tightening sleeve (12), valve body (1) inside symmetrical fixedly connected with sealing ring (18), valve rod (7) bottom fixedly connected with thread bush (14), thread bush (14) outside threaded connection has valve gap (15), valve gap (15) bottom is provided with clamp plate (16).

2. A leak prevention shut off valve for a natural gas pipeline as set forth in claim 1, wherein: the first flange (2) and the second flange (3) are fixedly connected with the nut (8) through the bolt (4).

3. A leak prevention shut off valve for a natural gas pipeline as set forth in claim 1, wherein: and sealing rings (10) are arranged at the upper end inside the first flange (2) and the lower end inside the second flange (3).

4. A leak prevention shut off valve for a natural gas pipeline as set forth in claim 1, wherein: and an elastic guide block (9) is fixedly connected to the outer side of the valve rod (7).

5. A leak prevention shut off valve for a natural gas pipeline as set forth in claim 1, wherein: the valve is characterized in that a sealing ring (10) is fixedly connected to one side inside the threaded fixing sleeve (12), and a pipeline (11) is fixedly connected to the inner side of the valve body (1) through the threaded fixing sleeve (12).

6. A leak prevention shut off valve for a natural gas pipeline as claimed in claim 1, wherein: and a sealing surface (17) is fixedly connected inside the valve cover (15).

7. A leak prevention shut off valve for a natural gas pipeline as set forth in claim 1, wherein: the pressure plate (16) and the valve cover (15) are fixedly connected through bolts (4).

8. A leak prevention shut off valve for a natural gas pipeline as claimed in claim 1, wherein: the rubber movable cylinder (13) is located at the upper end inside the valve body (1) through the valve rod (7) and is in sliding connection with the upper end.