CN212899742U

CN212899742U - Natural gas line valve structure

Info

Publication number: CN212899742U
Application number: CN202021267487.7U
Authority: CN
Inventors: 周鹏
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-07-01
Filing date: 2020-07-01
Publication date: 2021-04-06
Anticipated expiration: 2030-07-01

Abstract

The utility model discloses a natural gas pipeline valve structure, including the valve body, gland nut and cutting ferrule are installed at valve body both ends, and the leak detector is installed to the valve body top, and manual valve and automatic valve are installed respectively to the valve body middle part, and the seal gasket of manual valve and automatic valve bottom separately and the inside round hole interference fit of valve body, and three-phase asynchronous motor passes through the motor support and installs on the valve body, and is located the automatic valve right side; but manual valve safe and reliable's realization gas switch, automatic valve can realize the gas switch fast conveniently, the condition can conveniently be examined to the leak detector to the gas, the shim can compensate through adjustment gland nut when the small wearing and tearing of gasket seal, can dismantle gland nut when gasket seal wearing and tearing are serious and change gasket seal, realize better sealed effect and reduce cost of maintenance, the pipeline uses the cutting ferrule to connect, moreover, the steam generator is simple in structure, the dismouting is easy, the joint force is strong, can be high pressure resistant and impact vibration.

Description

Natural gas line valve structure

Technical Field

The utility model relates to a natural gas valve technical field specifically is a natural gas line valve structure.

Background

Valves are plumbing accessories used to open and close a pipe, control flow direction, regulate and control parameters of the transport medium (temperature, pressure and flow). According to their function, they can be classified into shut-off valves, check valves, regulating valves, and the like. The valve is a control part in a fluid conveying system and has the functions of stopping, adjusting, guiding, preventing counter flow, stabilizing pressure, shunting or overflowing and relieving pressure and the like. Valves used in fluid control systems range in variety and size from the simplest shut-off valves to the variety of valves used in extremely complex autonomous systems. The valve can be used for controlling the flow of various types of fluids such as air, water, steam, various corrosive media, slurry, oil products, liquid metal, radioactive media and the like. The valves are classified into cast iron valves, cast steel valves, stainless steel valves, chrome molybdenum vanadium steel valves, dual-phase steel valves, plastic valves, nonstandard valves, and the like according to the material. The gas valve is a novel safety matching device for gas pipeline engineering, is used for cutting off, connecting and adjusting gas in a pipeline, and has good control characteristic and closing sealing performance; it is suitable for various gas medium pipelines such as city gas, liquefied petroleum gas, natural gas and oxygen.

However, most of the existing natural gas pipeline valves are simple in structure, most of the valves are in threaded connection with pipelines, and the pipeline installation process is complicated; the whole rubber sealing sheet is arranged inside the valve, so that the valve is easy to wear and has high replacement cost; the valve switch is a rotary thread type, and the valve is required to be rotated for a plurality of circles when being switched, so that the operation is troublesome; the valve has no function of detecting gas leakage, and needs to be additionally provided with a gas detecting instrument, so that the safety is not good enough.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a natural gas line valve structure to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a natural gas line valve structure, includes the valve body, gland nut and cutting ferrule are installed at valve body both ends, and the leak detector is installed to valve body top, the leak detector passes through support and valve body fixed connection, and manual valve and automatic valve are installed respectively to valve body middle part, manual valve and automatic valve mutual independence and through valve body intercommunication, the seal gasket of manual valve and automatic valve bottom separately and the inside round hole interference fit of valve body, three-phase asynchronous motor pass through the motor support mounting on the valve body, three-phase asynchronous motor is located the automatic valve right side, and motor switch is installed to three-phase asynchronous motor top.

Preferably, the top of the automatic valve is provided with worm gear teeth which are meshed with an automatic valve worm, and the automatic valve worm is fixedly connected with a three-phase asynchronous motor.

Preferably, the bottom of the manual valve is fixedly connected with the unthreaded end of a manual valve screw, the compensation gasket is sleeved in from the manual valve screw, the sealing gasket is arranged below the compensation gasket, the bottom of the sealing gasket is fixed by a sealing nut, and the sealing nut is in threaded connection with the bottom of the manual valve screw and compresses the upper compensation gasket and the sealing gasket.

Preferably, the compression nut is in threaded connection with the end of the valve body, the clamping sleeve is located between the valve body and the compression nut, one end, without teeth, of the clamping sleeve abuts against the inside of the compression nut, and one end, with teeth, of the clamping sleeve abuts against an inclined plane of the end of the valve body.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the manual valve can safely and reliably realize gas switching, the automatic valve can quickly and conveniently realize gas switching, the two valves jointly improve the safety of the valve, and the leak detector can conveniently detect the gas leakage condition;

2. the compensation gasket can compensate by adjusting the sealing nut when the sealing gasket is slightly worn, and the sealing nut can be detached to replace the sealing gasket when the sealing gasket is seriously worn, so that a better sealing effect is realized and the maintenance cost is reduced;

3. the air inlet pipeline and the air outlet pipeline are connected by the clamping sleeve, and the air inlet pipeline and the air outlet pipeline are small in size, light in weight, simple in structure, easy to disassemble and assemble, strong in connecting force, capable of resisting high pressure and impact vibration, capable of selecting various materials, suitable for corrosion prevention and low in machining precision requirement.

Drawings

Fig. 1 is a perspective view of the structure of the natural gas pipeline valve of the present invention;

FIG. 2 is a top view of the automatic valve of the present invention;

FIG. 3 is an enlarged view of the sealing portion of the present invention;

fig. 4 is an enlarged view of the installation structure of the pipeline valve and the pipeline of the present invention.

In the figure: a valve body 1; a manual valve 2; a manual valve screw 21; an automatic valve 3; a leak detector 4; a holder 41; a three-phase asynchronous motor 5; a motor switch 51; a motor bracket 52; an automatic valve worm 53; a compression nut 6; a ferrule 7; a compensation shim 8; a sealing gasket 9; the nut 10 is sealed.

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 to 4, the present invention provides a technical solution: the utility model provides a natural gas pipeline valve structure, including valve body 1, gland nut 6 and cutting ferrule 7 are installed at 1 both ends of valve body, left end installation intake pipe, right-hand member installation outlet duct, leak detector 4 is installed to valve body 1 top, leak detector 4 passes through support 41 and valve body 1 fixed connection, manual valve 2 and automatic valve 3 are installed respectively at 1 middle part of valve body, manual valve 2 and automatic valve 3 mutual independence and through valve body 1 intercommunication, seal gasket 9 and the inside round hole interference fit of valve body 1 of manual valve 2 and automatic valve 3 bottom respectively, the natural gas passes through manual valve 2 earlier rethread automatic valve 3, manual valve 2 can normally open, automatic valve 3 is as required the switch, three-phase asynchronous motor 5 passes through motor support 52 and installs on valve body 1, three-phase asynchronous motor 5 is located automatic valve 3 right sides, motor switch 51 is installed in three-phase asynchronous motor 5 top in order to control the motor.

Furthermore, the top of the automatic valve 3 is provided with worm gear teeth which are meshed with the automatic valve worm 53, the automatic valve worm 53 is fixedly connected with the three-phase asynchronous motor 5, and the motor drives the automatic valve worm 53 to rotate, so that the opening and closing of the automatic valve 3 can be controlled;

furthermore, the bottom of the manual valve 2 is fixedly connected with the unthreaded end of a manual valve screw 21, a compensation gasket 8 is sleeved from the manual valve screw 21, a sealing gasket 9 is arranged below the compensation gasket 8, the bottom of the sealing gasket 9 is fixed by a sealing nut 10, the sealing nut 10 is in threaded connection with the bottom of the manual valve screw 21 and compresses the upper compensation gasket 8 and the sealing gasket 9;

furthermore, a compression nut 6 is in threaded connection with the end of the valve body 1, a clamping sleeve 7 is positioned between the valve body 1 and the compression nut 6, the non-toothed end of the clamping sleeve 7 is propped inside the compression nut 6, the toothed end of the clamping sleeve is propped on the inclined surface of the end of the valve body 1, the compression nut 6 is made of hard plastic, the clamping sleeve 7 is made of slightly soft plastic, the clamping sleeve 7 can be pushed towards the valve body 1 by rotating the compression nut 6, the inclined surface on the inner side of the valve body 1 compresses the toothed end of the clamping sleeve 7 to a pipeline, and the toothed end of the clamping sleeve 7 clamps the pipeline;

the working principle is as follows: when the natural gas pipe valve is used, a natural gas pipe is inserted into ports on two sides of the valve body 1, the compression nuts 6 on two sides are rotated, and the compression nuts 6 compress the clamping teeth of the clamping sleeve 7 to the surface of the gas inlet pipe, so that rapid installation is realized; the valve can be manually opened and closed by rotating the manual valve 2; by pressing the motor switch 51, the three-phase asynchronous motor 5 drives the automatic valve worm 53, and the automatic valve 3 can be controlled to be automatically switched on and off; the leak detector 4 is opened to detect whether the gas leaks; and adjusting the sealing nut 10, realizing sealing compensation by pressing the compensation gasket 8, or removing the sealing nut 10 to replace the sealing gasket 9 when the sealing gasket 9 is seriously worn.

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. The utility model provides a natural gas line valve structure, includes valve body (1), its characterized in that: gland nut (6) and cutting ferrule (7) are installed to valve body (1) both ends, and leak detector (4) are installed to valve body (1) top, leak detector (4) are through support (41) and valve body (1) fixed connection, and manual valve (2) and automatic valve (3) are installed respectively to valve body (1) middle part, manual valve (2) and automatic valve (3) mutual independence and through valve body (1) intercommunication, seal gasket (9) and the inside round hole interference fit of valve body (1) of manual valve (2) and automatic valve (3) bottom separately, and three-phase asynchronous motor (5) are installed on valve body (1) through motor support (52), three-phase asynchronous motor (5) are located automatic valve (3) right side, and motor switch (51) are installed to three-phase asynchronous motor (5) top.

2. A natural gas pipeline valve structure according to claim 1, wherein: the top of the automatic valve (3) is provided with worm gear teeth which are meshed with an automatic valve worm (53), and the automatic valve worm (53) is fixedly connected with a three-phase asynchronous motor (5).

3. A natural gas pipeline valve structure according to claim 1, wherein: the bottom of the manual valve (2) is fixedly connected with a non-threaded end of a manual valve screw (21), a compensation gasket (8) is sleeved from the manual valve screw (21), the sealing gasket (9) is installed below the compensation gasket (8), the bottom of the sealing gasket (9) is fixed by a sealing nut (10), and the sealing nut (10) is in threaded connection with the bottom of the manual valve screw (21) and compresses the upper compensation gasket (8) and the sealing gasket (9).

4. A natural gas pipeline valve structure according to claim 1, wherein: the compression nut (6) is in threaded connection with the end of the valve body (1), the clamping sleeve (7) is located between the valve body (1) and the compression nut (6), one end, without teeth, of the clamping sleeve (7) is propped inside the compression nut (6), and one end, with teeth, is propped on an inclined plane of the end of the valve body (1).