Medium-pressure gas pipeline gas supply metering fluctuation buffering device

Abstract

The utility model provides a medium-pressure gas pipeline gas supply metering fluctuation buffer device, which belongs to the field of gas supply equipment, and comprises a three-way pipe and an adjusting assembly, three interfaces of the three-way pipe are respectively and fixedly communicated with a gas inlet pipe, a gas outlet pipe and an adjusting pipe, and one end of the adjusting pipe far away from the three-way pipe is fixedly communicated with a buffer tank. An air outlet of the buffer tank is fixedly communicated with a bent pipe, the end, away from the buffer tank, of the bent pipe is communicated with an air outlet pipe, an air pressure meter is arranged on the air outlet pipe, and the adjusting assembly comprises a high-pressure adjusting part arranged in the adjusting pipe and a low-pressure adjusting part arranged in the bent pipe. By arranging the adjusting assembly, gas in the pipeline can be buffered and stored when the air pressure in the gas outlet pipe fluctuates, the stability of the air pressure and the gas flow of the gas outlet pipe is guaranteed, and therefore the accuracy of gas metering is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model belongs to gas supply equipment field especially, and it relates to a kind of medium-pressure gas pipeline gas supply metering fluctuation buffer device. BACKGROUND

[0002] Gas pipeline gas supply metering fluctuation buffer device is a kind of equipment for stabilizing gas supply, reduce gas supply metering fluctuation, to solve the problem of inaccurate measurement caused by unstable pressure, flow fluctuation etc.

[0003] The existing gas metering device analyzes the gas pressure by information collection, and when the flow in the pipeline gas fluctuates, the flow of gas is adjusted by control valve to ensure the accuracy of measurement, but the existing device cannot buffer and store when the flow of gas in the pipeline fluctuates, and if the control valve is damaged, it will lead to inaccurate gas measurement. UTILITY MODEL CONTENT

[0004] The utility model aims at solving the problem mentioned in the background art of prior art and provides a kind of medium-pressure gas pipeline gas supply metering fluctuation buffer device.

[0005] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0006] A kind of medium-pressure gas pipeline gas supply metering fluctuation buffer device, comprising:

[0007] Three-way pipe, the three interfaces of the three-way pipe are fixedly connected with inlet pipe, outlet pipe and adjusting pipe respectively, the end of the adjusting pipe away from the three-way pipe is fixedly connected with buffer tank, the gas outlet of the buffer tank is fixedly connected with elbow pipe, the end of the elbow pipe away from the buffer tank is communicated with the outlet pipe, and the outlet pipe is provided with pressure gauge;

[0008] Adjusting assembly, the adjusting assembly includes high-pressure adjusting component arranged in adjusting pipe and low-pressure adjusting component arranged in elbow pipe.

[0009] Preferably, the high-pressure adjusting component includes annular plate fixedly connected on the inner wall of adjusting pipe, the side wall away from the three-way pipe of the annular plate is fixedly connected with sealing ring, the cross-sectional shape of the sealing ring is same with the annular plate, the sealing sliding connection of the adjusting pipe is closed with sealing plate, the sealing plate is fixedly connected with movable rod, the adjusting pipe is fixedly connected with support plate, and the movable rod penetrates support plate.

[0010] Preferably, a plurality of air holes are formed in the sealing plate, and the air holes are closed by the sealing ring when the sealing plate abuts against the sealing ring.

[0011] Preferably, a conical hole is formed on the support plate, a conical plate adapted to the conical hole is fixedly connected to the movable rod, and the conical plate closes the conical hole when the blocking plate abuts against the sealing ring.

[0012] Preferably, a spring is sleeved on the movable rod between the conical plate and the blocking plate.

[0013] Preferably, the low-pressure adjusting component comprises a mounting plate fixedly connected in the elbow pipe, and an air pump fixedly connected to the mounting plate, wherein an air inlet of the air pump penetrates through the mounting plate.

[0014] Compared with the prior art, the utility model has the following advantages:

[0015] The utility model discloses a regulating assembly is set up, when the gas pressure in the tee pipe increases, the blocking plate moves to the direction close to the buffer tank under the action of pressure difference and compresses the spring, and the blocking plate separates from the sealing ring simultaneously, and the conical plate separates from the conical hole, and the gas in the tee pipe flows into the buffer tank after entering the regulating pipe from the air hole, and when the gas pressure in the tee pipe recovers, the blocking plate resets under the action of spring elasticity, and the regulating pipe is sealed, and when the gas pressure in the outlet pipe is identified to change, the air pump is controlled to extract the gas in the buffer tank to the outlet pipe, and the gas in the outlet pipe is supplemented, so as to guarantee the gas pressure and the gas flow of the outlet pipe are stable, thereby ensuring the accuracy of gas metering. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is an overall structure schematic view of the medium-pressure gas pipeline gas supply metering fluctuation buffer device.

[0017] Figure 2 It is an overall internal structure schematic view of the medium-pressure gas pipeline gas supply metering fluctuation buffer device.

[0018] Figure 3 It is an explosion view of the high-pressure adjusting component of the medium-pressure gas pipeline gas supply metering fluctuation buffer device.

[0019] Figure 4 It is Figure 2 It is an enlarged view of A in the middle.

[0020] In the drawing: 1 tee pipe, 2 inlet pipe, 3 outlet pipe, 4 regulating pipe, 5 buffer tank, 6 elbow pipe, 7 gas pressure gauge.

[0021] 41 annular plate, 42 sealing ring, 43 blocking plate, 44 movable rod, 45 support plate, 431 air hole, 441 conical plate, 451 conical hole, 46 spring.

[0022] 61 mounting plate, 62 air pump. DETAILED DESCRIPTION

[0023] The technical solutions in the utility model are further described below with reference to the drawings and examples.

[0024] With reference to Figures 1-4 A medium-pressure gas pipeline gas supply metering fluctuation buffer device, comprising a tee pipe 1 and an adjusting assembly, three interfaces of the tee pipe 1 are fixedly connected with an air inlet pipe 2, an air outlet pipe 3 and an adjusting pipe 4 in sequence, one end of the adjusting pipe 4 away from the tee pipe 1 is fixedly connected with a buffer tank 5, an air outlet of the buffer tank 5 is fixedly connected with an elbow pipe 6, one end of the elbow pipe 6 away from the buffer tank 5 is connected with the air outlet pipe 3, and the air outlet pipe 3 is provided with an air pressure gauge 7, the adjusting assembly comprises a high-pressure adjusting component arranged in the adjusting pipe 4 and a low-pressure adjusting component arranged in the elbow pipe 6.

[0025] During operation, gas is input from the air inlet pipe 2, flows into the air outlet pipe 3 through the tee pipe 1 and is supplied to a user end.

[0026] The high-pressure adjusting component comprises an annular plate 41 fixedly connected to the inner wall of the adjusting pipe 4, a sealing ring 42 fixedly connected to the side wall of the annular plate 41 away from the tee pipe 1, the cross-sectional shape of the sealing ring 42 is the same as that of the annular plate 41, a blocking plate 43 is sealingly and slidably connected in the adjusting pipe 4, a plurality of air holes 431 are formed in the blocking plate 43, the air holes 431 are closed by the sealing ring 42 when the blocking plate 43 abuts against the sealing ring 42, a movable rod 44 is fixedly connected to the blocking plate 43, a support plate 45 is fixedly connected in the adjusting pipe 4, the movable rod 44 penetrates through the support plate 45, a conical hole 451 is formed in the support plate 45, a conical plate 441 adapted to the conical hole 451 is fixedly connected to the movable rod 44, the conical plate 441 closes the conical hole 451 when the blocking plate 43 abuts against the sealing ring 42, and a spring 46 is sleeved on the movable rod 44 between the conical plate 441 and the blocking plate 43.

[0027] Under normal working conditions, the spring 46 is in a natural state, the blocking plate 43 abuts against the sealing ring 42, the conical plate 441 closes the conical hole 451, and the adjusting pipe 4 is in a closed state, the air pressure in the adjusting pipe 4 is the same as that in the tee pipe 1, when the air pressure in the tee pipe 1 increases, the blocking plate 43 moves towards the buffer tank 5 under the action of the pressure difference and presses the spring 46, the sealing of the adjusting pipe 4 is released, the gas in the tee pipe 1 enters the adjusting pipe 4 through the air holes 431 and finally flows into the buffer tank 5, and when the air pressure in the tee pipe 1 returns, the blocking plate 43 and the conical plate 441 reset to close the adjusting pipe 4 under the elastic force of the spring 46.

[0028] The low-pressure adjusting component comprises a mounting plate 61 fixedly connected in the elbow pipe 6, the mounting plate 61 is fixedly connected with a gas pump 62, and an air inlet of the gas pump 62 penetrates through the mounting plate 61.

[0029] When the gas pressure in the tee pipe 1 decreases, the gas pressure gauge 7 will immediately identify and control the air pump 62 to extract the gas in the buffer tank 5 into the gas outlet pipe 3, and the gas in the gas outlet pipe 3 is supplemented, and the air pump 62 stops extraction when the gas pressure in the gas outlet pipe 3 recovers.

[0030] The utility model can be described by the following operation mode to explain its function principle:

[0031] In the normal working state, the spring 46 is in a natural state, the blocking plate 43 abuts against the sealing ring 42, the conical plate 441 closes the conical hole 451, and the adjusting pipe 4 is in a closed state, the gas pressure in the adjusting pipe 4 is the same as the gas pressure in the tee pipe 1, and the gas input from the gas inlet pipe 2 flows into the gas outlet pipe 3 through the tee pipe 1 for the user end to use.

[0032] When the gas pressure in the tee pipe 1 increases, the blocking plate 43 moves to the direction close to the buffer tank 5 under the action of the pressure difference and extrudes the spring 46, the sealing of the adjusting pipe 4 is removed, the gas in the tee pipe 1 enters the adjusting pipe 4 through the air hole 431 and finally flows into the buffer tank 5, and when the gas pressure in the tee pipe 1 recovers, the blocking plate 43 and the conical plate 441 reset to close the adjusting pipe 4 under the elastic force of the spring 46.

[0033] When the gas pressure in the tee pipe 1 decreases, the gas pressure gauge 7 will immediately identify and control the air pump 62 to extract the gas in the buffer tank 5 into the gas outlet pipe 3, and the gas in the gas outlet pipe 3 is supplemented, and the air pump 62 stops extraction when the gas pressure in the gas outlet pipe 3 recovers, so as to ensure the stability of the gas pressure and the gas flow of the gas outlet pipe 2, and ensure the accuracy of the gas metering.

[0034] Finally, it is pointed out that the above embodiments are only used to illustrate the technical solutions of the utility model and are not limited, although the utility model has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the utility model can be modified or replaced equivalently without departing from the purpose and scope of the technical solutions of the utility model, and they should be covered in the scope of the claims of the utility model.

Claims

1. A medium pressure gas pipeline supply metering fluctuation buffer device, characterized by, Include: Three-way pipe (1), three interfaces of the three-way pipe (1) are fixedly connected with air inlet pipe (2), air outlet pipe (3) and adjusting pipe (4) respectively, one end of the adjusting pipe (4) away from the three-way pipe (1) is fixedly connected with buffer tank (5), the air outlet of the buffer tank (5) is fixedly connected with elbow pipe (6), one end of the elbow pipe (6) away from the buffer tank (5) is communicated with the air outlet pipe (3), the air outlet pipe (3) is provided with air pressure gauge (7); Adjusting assembly, the adjusting assembly includes high pressure adjusting part arranged in the adjusting pipe (4) and low pressure adjusting part arranged in the elbow pipe (6), the high pressure adjusting part includes annular plate (41) fixedly connected on the inner wall of the adjusting pipe (4), the side wall of the annular plate (41) away from the three-way pipe (1) is fixedly connected with sealing ring (42), the cross section shape of the sealing ring (42) is same with the annular plate (41), the adjusting pipe (4) is sealingly and slidably connected with blocking plate (43), the blocking plate (43) is fixedly connected with movable rod (44), the adjusting pipe (4) is fixedly connected with support plate (45), the movable rod (44) penetrates the support plate (45), the low pressure adjusting part includes mounting plate (61) fixedly connected in the elbow pipe (6), the mounting plate (61) is fixedly connected with air pump (62), the air inlet of the air pump (62) penetrates the mounting plate (61).

2. A medium pressure gas pipeline supply metering fluctuation buffer device according to claim 1, characterized in that, A plurality of air holes (431) are formed in the blocking plate (43), when the blocking plate (43) abuts against the sealing ring (42), the air holes (431) are closed by the sealing ring (42).

3. A medium pressure gas pipeline supply metering fluctuation buffer device according to claim 1, characterized in that, A conical hole (451) is formed in the support plate (45), a conical plate (441) adapted to the conical hole (451) is fixedly connected on the movable rod (44), when the blocking plate (43) abuts against the sealing ring (42), the conical plate (441) closes the conical hole (451).

4. A medium pressure gas pipeline supply metering surge buffer apparatus according to claim 3, characterised in that, A spring (46) is sleeved on the movable rod (44) between the conical plate (441) and the blocking plate (43).

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