Natural gas pipeline line block valve

Abstract

The utility model discloses a natural gas pipeline line cut-off valve, which relates to the technical field of natural gas pipelines and comprises a cut-off valve main pipe, and a natural gas leakage closing mechanism is mounted above the cut-off valve main pipe. According to the natural gas pipeline line block valve, the valve seat is installed above the block valve main pipe, the metering prompter is installed behind the valve seat, the metering prompter is connected with the natural gas tester through the metering rod, and the natural gas tester is located in the block valve main pipe, so that the flowing condition of natural gas in the block valve main pipe can be monitored; when gas leakage occurs in the stop valve main pipe, the metering prompter prompts a worker, the driver is installed on one side of the stop valve main pipe, the driver is connected with the gas separation fan through the driving rod, the driver is remotely controlled, the driver is used for closing the gas separation fan, gas circulation is blocked, and the stop valve main pipe is connected with the gas separation fan through the driving rod. By means of the design, the natural gas pipeline can be closed in time, and the emission amount of natural gas leakage is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of natural gas pipelines, in particular to a natural gas pipeline line cut-off valve. Background Art

[0002] A natural gas pipeline refers to a pipeline that transports natural gas (including associated gas produced in oil fields) from the mining site or processing plant to the urban gas distribution center or industrial enterprise users. It is also called a gas transmission pipeline. A shut-off valve is installed in the natural gas pipeline. The shut-off valve is also called a closed-circuit valve. Its function is to connect or cut off the medium in the pipeline. For this purpose, a natural gas pipeline line shut-off valve is proposed for use.

[0003] The existing Chinese utility model patent with reference announcement number CN218863885U discloses a natural gas pipeline shut-off valve chamber. The setting of the natural gas pipeline shut-off valve chamber includes a shut-off valve chamber and a main pipeline. The main pipeline passes through the shut-off valve chamber. Both ends of the main pipeline are located inside the shut-off valve chamber and are connected to shut-off valves through flanges. A gas collecting tank with a universal wheel at the bottom is arranged below the main pipeline. An external threaded pipe is integrally connected to the bottom of the main pipeline between the shut-off valves. The external threaded pipe is connected to the inside of the main pipeline. The lower end of the external threaded pipe is integrally connected to a vertical plug. A first gasket is sleeved on the outside of the plug. A third mechanical valve is installed on the outside of the plug. A gas collecting pipeline assembly is installed on the top of the gas collecting tank; the gas collecting pipeline assembly includes a first vacuum pump, a connecting pipe, a first mechanical valve, an internal threaded pipe, and a first spring. The end of the connecting pipe away from the first vacuum pump is rotatably connected to the internal threaded pipe, the internal threaded pipe is connected to the first spring, and the top of the first spring is connected to the second gasket; the internal threaded pipe and the external threaded pipe are threadedly connected and fixed.

[0004] In the process of using the existing natural gas pipeline line shut-off valve, since natural gas is prone to leakage during pipeline transportation, and the leaked gas is usually colorless and odorless, failure to monitor and close the gas channel in time may cause poisoning and other dangers to the surrounding workers, which needs to be improved. Therefore, the technical personnel in this field provide a natural gas pipeline line shut-off valve to solve the problems raised in the above background technology. Utility Model Content

[0005] The utility model aims to provide a natural gas pipeline cut-off valve to solve the problems of natural gas leakage closure and pipeline sealing of the existing natural gas pipeline cut-off valve proposed in the above background technology.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A natural gas pipeline shutoff valve comprises a shutoff valve main pipe, a natural gas leakage closing mechanism is installed above the shutoff valve main pipe, natural gas pipeline sealing mechanisms are installed on both sides of the shutoff valve main pipe, the natural gas leakage closing mechanism comprises: a valve seat installed above the shutoff valve main pipe, a spiral ring is installed below the valve seat, and an air-blocking fan is connected below the spiral ring, and a driving rod for driving the device to close is installed at one end of the air-blocking fan, a driver is installed at one side of the driving rod, and a metering indicator for prompting natural gas leakage is installed behind the valve seat;

[0008] The gas pipeline sealing mechanism includes: a reinforcement ring installed on both sides of the shut-off valve main pipe, a reinforcement screw for external reinforcement of the equipment penetrates the interior of the reinforcement ring, and side screws are installed on both sides of the reinforcement ring, and a rotating screw is installed above the reinforcement ring, and a rotating fan for blocking the flow of gas is installed below the rotating screw.

[0009] Preferably, a secondary flow pipeline is connected to one side of the reinforcement ring, and bottom frames are installed below the shut-off valve main pipe and the secondary flow pipeline; the secondary flow pipeline outputs the natural gas inside the shut-off valve main pipe.

[0010] Preferably, the bottom frame comprises:

[0011] A connecting plate, wherein the connecting plate is connected between the bottom frames, and a telescopic column is installed between the connecting plates;

[0012] A bottom plate is connected to the bottom of the bottom frame; the bottom frame can support the bottom of the shut-off valve main pipe.

[0013] Preferably, a metering rod is connected below the metering reminder, a natural gas tester is installed below the metering rod, and an analysis panel is installed on one side of the metering rod; the metering reminder can provide reminders to the staff.

[0014] Preferably, the valve seat is connected through a screw ring and an air-blocking fan, and the air-blocking fan is located inside the shut-off valve main pipe, and the diameters of the air-blocking fan and the shut-off valve main pipe are consistent, the air-blocking fan is connected through a driving rod and a driver, and the driver is located at the right rear of the shut-off valve main pipe; the setting of the air-blocking fan determines the flow of natural gas inside the shut-off valve main pipe.

[0015] Preferably, the gas tester is located above the interior of the shut-off valve main pipe, and the metering rod is inserted into the top of the shut-off valve main pipe; the gas tester can detect the gas condition inside the shut-off valve main pipe.

[0016] Preferably, the reinforcement ring is connected between the shut-off valve main pipe and the secondary flow pipe, and the side screws are symmetrical through the midpoint of the reinforcement ring, and the rotating fan is located inside the shut-off valve main pipe, and the rotating fan is rotated by the rotating screw; the reinforcement ring can make the shut-off valve main pipe and the secondary flow pipe tightly connected.

[0017] Compared with the prior art, the beneficial effects of the utility model are:

[0018] 1. This type of natural gas pipeline shut-off valve has a valve seat installed above the shut-off valve main pipe, and a metering indicator installed behind the valve seat. The metering indicator is connected to the gas tester through a metering rod, and the gas tester is located inside the shut-off valve main pipe, so that the gas flow inside the shut-off valve main pipe can be monitored. When the shut-off valve main pipe leaks, the metering indicator will prompt the staff, and then a driver is installed on one side of the shut-off valve main pipe. The driver is connected to the air isolation fan through a driving rod, and the driver is remotely controlled. The air isolation fan is closed by the driver to block the gas flow. This design can close the gas pipeline in time and reduce the emission of gas leakage;

[0019] 2. This type of natural gas pipeline shut-off valve has reinforcement rings installed on both sides of the shut-off valve main pipe. The reinforcement rings are located between the shut-off valve main pipe and the secondary flow main pipe, and side screws are installed on both sides of the reinforcement ring. The side screws tighten the reinforcement ring to make the shut-off valve main pipe and the secondary flow pipe seamlessly connected to avoid gas leakage during transportation. At the same time, a rotating screw is installed above the reinforcement ring. The rotating screw rotates the rotating fan and can also control the flow rate of gas inside the shut-off valve main pipe, thereby further reinforcing and sealing the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the overall structure of a natural gas pipeline line shut-off valve in one embodiment of the utility model;

[0021] Figure 2 This is a schematic diagram of the structure of a valve seat and a metering indicator of a natural gas pipeline shutoff valve in one embodiment of the utility model;

[0022] Figure 3 This is a schematic diagram of a reinforcement ring structure of a natural gas pipeline line shut-off valve in one embodiment of the utility model;

[0023] Figure 4 The present invention is a schematic diagram of a bottom frame structure of a natural gas pipeline line shut-off valve in one embodiment of the present invention.

[0024] 1. Shut-off valve main pipe; 2. Valve seat; 21. Screw ring; 22. Air barrier fan; 23. Drive rod; 24. Driver; 3. Metering indicator; 31. Metering rod; 32. Gas tester; 33. Analysis panel; 4. Reinforcement ring; 41. Reinforcement screw; 42. Side screw; 43. Rotating screw; 44. Rotating fan; 5. Secondary flow pipeline; 6. Bottom frame; 61. Connecting plate; 62. Telescopic column; 63. Bottom plate. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] Combined with Figure 1-Figure 4 In the present embodiment, a natural gas pipeline shut-off valve comprises a shut-off valve main pipe 1, a natural gas leakage closing mechanism is installed above the shut-off valve main pipe 1, and natural gas pipeline sealing mechanisms are installed on both sides of the shut-off valve main pipe 1, and the natural gas leakage closing mechanism comprises: a valve seat 2 installed above the shut-off valve main pipe 1, a spiral ring 21 is installed below the valve seat 2, and an air-blocking fan 22 is connected below the spiral ring 21, and a driving rod 23 is installed at one end of the air-blocking fan 22, and a driver 24 is installed on one side of the driving rod 23; the valve seat 2 is connected to the air-blocking fan 22 through the spiral ring 21, and the air-blocking fan 22 is located inside the shut-off valve main pipe 1, and the diameters of the air-blocking fan 22 and the shut-off valve main pipe 1 are consistent, and the air-blocking fan 22 is connected to the driver 24 through the driving rod 23, and the driver 24 is located at the right rear of the shut-off valve main pipe 1.

[0027] Specifically, a valve seat 2 is installed above the shut-off valve main pipe 1. The valve seat 2 is connected to the air-blocking fan 22 through a screw ring 21. The air-blocking fan 22 can be manually closed by rotating the valve seat 2 to prevent the natural gas from flowing inside the shut-off valve main pipe 1. A driving rod 23 is connected to one side of the air-blocking fan 22, and a driver 24 is installed on one side of the driving rod 23. The driver 24 drives the air-blocking fan 22 to rotate through the driving rod 23 through remote control to block the natural gas inside the shut-off valve main pipe 1.

[0028] A metering rod 31 is connected below the metering indicator 3, and a gas tester 32 is installed below the metering rod 31, and an analysis panel 33 is installed on one side of the metering rod 31; the gas tester 32 is located above the inside of the shut-off valve main pipe 1, and the metering rod 31 is inserted into the top of the shut-off valve main pipe 1.

[0029] Specifically, a metering indicator 3 is installed behind the valve seat 2. The metering indicator 3 is connected to a gas tester 32 through a metering rod 31. The gas tester 32 is located inside the shut-off valve main pipe 1 to detect the gas inside the shut-off valve main pipe 1. If a gas leak occurs inside the shut-off valve main pipe 1, the metering indicator 3 can immediately remind the staff.

[0030] The natural gas pipeline sealing mechanism includes: a reinforcement ring 4 installed on both sides of the shut-off valve main pipe 1, a reinforcement screw 41 passing through the interior of the reinforcement ring 4, and side screws 42 are installed on both sides of the reinforcement ring 4, and a rotating screw 43 is installed above the reinforcement ring 4, and a rotating fan 44 is installed below the rotating screw 43; the reinforcement ring 4 is connected between the shut-off valve main pipe 1 and the secondary flow pipe 5, and the side screws 42 are symmetrical through the midpoint of the reinforcement ring 4, and the rotating fan 44 is located inside the shut-off valve main pipe 1, and the rotating fan 44 is rotated by the rotating screw 43.

[0031] Specifically, the reinforcement ring 4 is arranged between the shut-off valve main pipe 1 and the secondary flow pipe 5, and is fastened by the side screws 42, and the rotating fan 44 is opened and closed by the rotating screws 43 above the reinforcement ring 4, so as to further block the natural gas flow of the shut-off valve main pipe 1.

[0032] A secondary flow pipeline 5 is connected to one side of the reinforcement ring 4, and a bottom frame 6 is installed below the shut-off valve main pipe 1 and the secondary flow pipeline 5; the bottom frame 6 includes: a connecting plate 61, the connecting plate 61 is connected between the bottom frames 6, and a telescopic column 62 is installed between the connecting plates 61; and a bottom plate 63, the bottom plate 63 is connected to the bottom of the bottom frame 6.

[0033] Specifically, the bottom frame 6 is supported below the shut-off valve main pipe 1 and the secondary flow pipe 5, and the bottom frame 6 is adjusted in length according to the telescopic column 62, so as to support pipes of different thicknesses and keep a certain distance from the ground.

[0034] Working principle: First, the shut-off valve main pipe 1 and the secondary flow pipe 5 are connected through the reinforcement ring 4, and side screws 42 are installed on both sides of the reinforcement ring 4, so that the reinforcement ring 4 clamps the shut-off valve main pipe 1 and the secondary flow pipe 5, and a bottom frame 6 is installed below the shut-off valve main pipe 1 and the secondary flow pipe 5. The bottom frame 6 can make the shut-off valve main pipe 1 and the secondary flow pipe 5 above the ground to prevent the liquid on the ground from damaging the pipe. Then open the valve seat 2 to make the gas flow between the shut-off valve main pipe 1 and the secondary flow pipe 5. A metering indicator 3 is installed behind the valve seat 2. The metering indicator 3 is connected to the gas tester 32 through a metering rod 31. The gas tester 32 is located inside the shut-off valve main pipe 1 to measure the shut-off valve. The natural gas inside the main pipe 1 is detected. If there is a natural gas leak inside the shut-off valve main pipe 1, the metering prompter 3 can prompt the staff at the first time. After receiving the prompt, the staff can remotely control the driver 24. The driver 24 is connected to the air-isolating fan 22 through the driving rod 23, and the opened air-isolating fan 22 is pushed to close, thereby timely blocking the natural gas inside the shut-off valve main pipe 1. Then, a rotating screw 43 is installed above the reinforcement ring 4. The rotating screw 43 opens and closes the rotating fan 44, and the natural gas flow of the shut-off valve main pipe 1 is further blocked to ensure that the natural gas no longer circulates. In this way, the entire use process of the natural gas pipeline shut-off valve is completed.

[0035] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A natural gas pipeline shutoff valve, comprising a shutoff valve main pipe (1), a gas leakage closing mechanism is installed above the shutoff valve main pipe (1), and gas pipeline sealing mechanisms are installed on both sides of the shutoff valve main pipe (1), characterized in that: The gas leakage closing mechanism comprises: a valve seat (2) installed above the shut-off valve main pipe (1), a screw ring (21) installed below the valve seat (2), an air-blocking fan (22) connected below the screw ring (21), a driving rod (23) installed at one end of the air-blocking fan (22), a driver (24) installed at one side of the driving rod (23), and a metering indicator (3) installed behind the valve seat (2); The gas pipeline sealing mechanism comprises: a reinforcement ring (4) installed on both sides of the shut-off valve main pipe (1), a reinforcement screw (41) passing through the interior of the reinforcement ring (4), side screws (42) installed on both sides of the reinforcement ring (4), a rotating screw (43) installed above the reinforcement ring (4), and a rotating fan (44) installed below the rotating screw (43).

2. A natural gas pipeline line shut-off valve according to claim 1, characterized in that: One side of the reinforcement ring (4) is connected to a secondary flow pipeline (5), and a bottom frame (6) is installed below the shut-off valve main pipe (1) and the secondary flow pipeline (5).

3. A natural gas pipeline line shut-off valve according to claim 2, characterized in that: The bottom frame (6) comprises: A connecting plate (61), wherein the connecting plate (61) is connected between the bottom frames (6), and a telescopic column (62) is installed between the connecting plates (61); A bottom plate (63), the bottom plate (63) is connected to the bottom of the bottom frame (6).

4. A natural gas pipeline line shut-off valve according to claim 1, characterized in that: A metering rod (31) is connected below the metering indicator (3), a natural gas tester (32) is installed below the metering rod (31), and an analysis panel (33) is installed on one side of the metering rod (31).

5. A natural gas pipeline line shut-off valve according to claim 1, characterized in that: The valve seat (2) is connected to the air barrier fan (22) through the screw ring (21), and the air barrier fan (22) is located inside the shut-off valve main pipe (1). The diameters of the air barrier fan (22) and the shut-off valve main pipe (1) are consistent. The air barrier fan (22) is connected to the driver (24) through the driving rod (23), and the driver (24) is located at the right rear of the shut-off valve main pipe (1).

6. A natural gas pipeline line shut-off valve according to claim 4, characterized in that: The natural gas tester (32) is located above the interior of the shut-off valve main pipe (1), and the metering rod (31) is inserted into the top of the shut-off valve main pipe (1).

7. A natural gas pipeline line shut-off valve according to claim 1, characterized in that: The reinforcing ring (4) is connected between the shut-off valve main pipe (1) and the secondary flow pipe (5), and the side screws (42) are symmetrical with each other through the midpoint of the reinforcing ring (4), and the rotating fan (44) is located inside the shut-off valve main pipe (1), and the rotating fan (44) is rotated by the rotating screw (43).

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