Automatic distribution control device with flow monitoring structure for natural gas

Abstract

The utility model relates to an automatic distribution control device with a flow monitoring structure for natural gas, which is characterized in that the upper end of a main delivery pipe is fixedly communicated with a monitoring and adjusting device, the monitoring and adjusting device is fixedly communicated with the inlet end of a front distribution pipe, the outlet end of the front distribution pipe is fixedly communicated with the inlet end of a buffer tank, and the outlet end of the buffer tank is fixedly communicated with the outlet end of a main delivery pipe. The outlet end of the buffer tank is fixedly communicated with the inlet end of a rear branch conveying pipe; the monitoring adjusting device comprises a monitoring cylinder fixedly communicated with the main conveying pipe, a monitoring rod is coaxially and slidably connected to a mounting hole, the upper connecting disc coaxially sleeves an upper sealing ring slidably abutted to the inner wall of the monitoring cylinder, and the lower connecting disc coaxially sleeves a lower sealing ring slidably abutted to the inner wall of the monitoring cylinder. A blocking disc is integrally and coaxially arranged at the upper end of the monitoring rod, a spring is coaxially and fixedly connected to the end, opposite to the monitoring cylinder, of the blocking disc, and the inlet end of the front branch conveying pipe is located between the upper sealing ring and the lower sealing ring and fixedly communicates with the monitoring cylinder.

Description

Technical Field

[0001] The utility model relates to the technical field of natural gas transmission devices, in particular to an automatic distribution control device for natural gas with a flow rate monitoring structure. Background Art

[0002] A natural gas pipeline refers to a pipeline that transports natural gas 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. Using a natural gas pipeline to transport natural gas is a way to transport large quantities of natural gas on land.

[0003] In the process of natural gas transportation, in order to ensure the safety of the transportation pipeline network, it is necessary to regulate the flow of the natural gas transmission pipeline network to achieve the purpose of distribution pipeline network pressure and avoid accidents caused by excessive pipeline network pressure. At present, when regulating the flow and distribution pressure, the gas pipeline network generally relies on the station control system of the distribution station for regulation. However, in actual application, the natural gas pipeline network, especially the long-distance pipeline network, is not covered by the station control system everywhere. For the blind spots of such station control systems, it is also necessary to regulate the flow and distribution pressure to ensure the safety of the pipeline network. In this regard, the present application specifically proposes an automatic distribution control device with a flow supervision structure for natural gas to solve the problem of controlling the flow and distribution pressure in the blind spots of the station control system. Utility Model Content

[0004] In view of the above situation, in order to overcome the defects of the prior art, the utility model provides an automatic distribution control device with a flow rate monitoring structure for natural gas, and the technical solution to the problem is that it includes a main delivery pipe, characterized in that the upper end of the main delivery pipe is fixedly connected with a monitoring and regulating device, the monitoring and regulating device is fixedly connected with the inlet end of the front distribution pipe, the outlet end of the front distribution pipe is fixedly connected with the inlet end of the buffer tank, and the outlet end of the buffer tank is fixedly connected with the inlet end of the rear distribution pipe;

[0005] The monitoring and adjustment device includes a monitoring tube fixedly connected to the main delivery pipe, a mounting hole is coaxially opened at the upper end of the monitoring tube, a monitoring rod is coaxially slidably connected to the mounting hole, an upper connecting plate is coaxially arranged on the lower side of the monitoring rod, the upper connecting plate is coaxially sleeved on the upper sealing ring that slides and abuts against the inner wall of the monitoring tube, a lower connecting plate is coaxially fixedly connected to the bottom of the monitoring rod, the lower connecting plate is coaxially sleeved on the lower sealing ring that slides and abuts against the inner wall of the monitoring tube, a baffle is coaxially arranged on the upper end of the monitoring rod, a spring is coaxially fixedly connected to the baffle and the opposite end of the monitoring tube, and the inlet end of the front branch delivery pipe is located between the upper sealing ring and the lower sealing ring and is fixedly connected to the monitoring tube.

[0006] Preferably, the inner wall of the mounting hole is fixedly connected with two guide keys which are symmetrically arranged about its axis, and the outer edge of the monitoring rod is provided with two guide grooves which correspond one-to-one to the guide keys and are slidably connected.

[0007] Preferably, a check valve is installed on the front branch pipe, and a solenoid valve is installed on the rear branch pipe.

[0008] The beneficial effects of the utility model are:

[0009] When the present application is in use, the main pipeline is used for the transportation of natural gas. When the natural gas flow in the main pipeline is too large and the pressure increases, the monitoring and regulating device can quickly sense this phenomenon and respond automatically, and guide the natural gas in the main pipeline through the front branch pipeline into the buffer tank for buffering, thereby alleviating the pressure problem caused by the excessive flow of the main pipeline and ensuring the safe operation of the main pipeline. The present application has a simple structure, is easy to use, and has strong practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 This is a full cutaway stereoscopic view of the utility model.

[0011] Figure 2 It is a partial enlarged view of the full-section stereoscopic view of the utility model.

[0012] Figure 3 This is a stereoscopic view of the utility model from the first perspective.

[0013] Reference numerals

[0014] 1. Main delivery pipe, 2. High-pressure monitoring and regulating device, 3. Front branch pipe, 4. Buffer tank, 5. Rear branch pipe, 6. Monitoring tube, 7. Mounting hole, 8. Monitoring rod, 9. Upper connecting plate, 10. Upper sealing ring, 11. Lower connecting plate, 12. Lower sealing ring, 13. Baffle plate, 14. Spring, 15. Guide key plate, 16. Guide groove, 17. Check valve, 18. Solenoid valve. DETAILED DESCRIPTION

[0015] The following is combined with Figure 1-3 The specific implementation methods of the utility model are further described in detail.

[0016] Embodiment 1, the technical solution is that when the present application is in use, the main delivery pipe 1 is used for the delivery of natural gas. When the natural gas flow in the main delivery pipe 1 is too large and the pressure increases, the monitoring and regulating device can quickly sense this phenomenon and automatically respond, and introduce the natural gas in the main delivery pipe 1 into the buffer tank 4 through the front branch pipe 3 for buffering, thereby alleviating the pressure problem caused by the excessive flow of the main delivery pipe 1 and ensuring the safe operation of the main delivery pipe 1. The present application has a simple structure, is easy to use, and has strong practicality.

[0017] Embodiment 2, based on embodiment 1, specifically, when the present application is in use, under normal circumstances, in the detection cylinder of the monitoring and adjusting device, the positions of the upper sealing ring 10 and the lower sealing ring 12 are as shown in the accompanying drawings of the specification. Figure 2 As shown, the springs 14 are located at the upper and lower sides of the inlet end of the front distribution pipe 3, and are in a normal working state. When the natural gas flow in the main delivery pipe 1 is too strong and the internal pressure of the main delivery pipe 1 increases, due to the increase in internal pressure, the air pressure in the main delivery pipe 1 will act on the lower connecting plate 11 and the lower sealing ring 12, and push them to move upward along the inner wall of the monitoring tube 6, and then the monitoring rod 8 will also move upward along the mounting hole 7, and at the same time, the spring 14 located between the baffle plate 13 and the monitoring tube 6 will also be stretched. As the lower connecting plate 11 and the lower sealing ring 12 move upward to cross the lower edge of the inlet end of the front branch pipe 3, the front branch pipe 3 will begin to communicate with the main delivery pipe 1 through the lower part of the monitoring tube 6, and then the natural gas in the main delivery pipe 1 will flow to the buffer tank 4 through the front branch pipe 3, and then the flow of the main delivery pipe 1 will be regulated, and its pressure will be distributed to ensure the safe operation of the main delivery pipe 1. As the above-mentioned distribution pressure is carried out, the flow in the main delivery pipe 1 will tend to stabilize at a normal value, that is, the internal pressure tends to stabilize at a normal value, and then the spring 14 will also automatically contract under its elastic deformation capacity, and drive various parts of the monitoring and regulating device to reset to normal cleaning.

[0018] Embodiment 3, on the basis of embodiment 2, a check valve 17 is arranged on the front branch pipe 3 to prevent the gas in the buffer tank 4 from flowing back to the main delivery pipe 1. An upper connecting plate 9 and an upper sealing ring 10 are also arranged on the monitoring rod 8, which further ensure the air tightness of the monitoring tube 6, ensure the normal operation of the monitoring and regulating device, and further prevent the natural gas from leaking through the mounting hole 7 and causing safety accidents. A rear branch pipe 5 is also arranged on the buffer tank 4, and the outlet end of the rear branch pipe 5 can be connected to an appropriate position of the natural gas transmission network as required. By opening the solenoid valve 18, the natural gas in the buffer tank 4 can be transported outward through the rear branch pipe 5 to ensure the use space of the buffer tank 4. A guide groove 16 cooperating with the guide key 15 is provided on the monitoring rod 8, which limits the monitoring rod 8 to move only in the vertical direction, preventing it from rotating and twisting the spring 14 through the baffle 13, thereby affecting the sensitivity of the spring 14 and the entire monitoring and regulating device.

Claims

1. An automatic distribution control device for natural gas with a flow control structure, comprising a main transmission pipe (1), characterized in that: The upper end of the main delivery pipe (1) is fixedly connected to a monitoring and regulating device, the monitoring and regulating device is fixedly connected to the inlet end of the front branch delivery pipe (3), the outlet end of the front branch delivery pipe (3) is fixedly connected to the inlet end of the buffer tank (4), and the outlet end of the buffer tank (4) is fixedly connected to the inlet end of the rear branch delivery pipe (5); The monitoring and regulating device comprises a monitoring tube (6) fixedly connected to the main delivery pipe (1); a mounting hole (7) is coaxially formed at the upper end of the monitoring tube (6); a monitoring rod (8) is coaxially slidably connected to the mounting hole (7); an upper connecting plate (9) is coaxially arranged on the lower side of the monitoring rod (8); the upper connecting plate (9) is coaxially sleeved on an upper sealing ring (10) slidably abutting against the inner wall of the monitoring tube (6); a lower connecting plate (11) is coaxially fixedly connected to the bottom of the monitoring rod (8); the lower connecting plate (11) is coaxially sleeved on a lower sealing ring (12) slidably abutting against the inner wall of the monitoring tube (6); a baffle (13) is coaxially arranged on the upper end of the monitoring rod (8); a spring (14) is coaxially fixedly connected to the baffle (13) and the opposite end of the monitoring tube (6); and an inlet end of the front branch delivery pipe (3) is located between the upper sealing ring (10) and the lower sealing ring (12) and is fixedly connected to the monitoring tube (6).

2. According to claim 1, a natural gas automatic distribution control device with a flow rate monitoring structure is characterized in that: The inner wall of the mounting hole (7) is fixedly connected with two guide keys (15) arranged symmetrically about its axis, and the outer edge of the monitoring rod (8) is provided with two guide grooves (16) corresponding one to one with the guide keys (15) and slidably connected.

3. According to claim 1, a natural gas automatic distribution control device with a flow rate monitoring structure is characterized in that: A check valve (17) is installed on the front branch pipe (3), and a solenoid valve (18) is installed on the rear branch pipe (5).

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