Bidirectional pressure supplementing and metering remote control gas supply system

Abstract

The utility model discloses a two-way pressure supplementing and metering remote control gas supply system which comprises a main gas guide pipe, a first gas guide pipe, a second gas guide pipe, a first return pipe and a second return pipe, the first gas guide pipe is respectively connected with a first valve and a second valve, the second valve is connected with the first return pipe, and the second valve is connected with the second return pipe. The first valve is respectively connected with the second return pipe and the air inlet end of the main air guide pipe; according to the system, a main gas guide pipe, a first gas guide pipe, a second gas guide pipe, a first return pipe and a second return pipe are arranged, the first gas guide pipe is connected with one area, the second gas guide pipe is connected with the other area, and opening and closing of a first valve, a second valve, a third valve, a fourth valve and a fifth valve are matched, so that gas supply or gas connection from one area to the other area is achieved; therefore, interconnection and intercommunication gas supply between the two areas is achieved, and the whole system is simple and practical.

Description

Technical Field

[0001] The utility model relates to the technical field of gas, in particular to a remote control gas supply system for bidirectional pressure supplementation and metering. Background Art

[0002] The urban gas supply mode, also known as the urban gas supply method, is generally supplied by pipelines, and is composed of storage stations, pressure regulating stations, etc. In the existing urban gas supply mode, usually one gas source is responsible for supplying gas to the area where it is located, and it is impossible to supply gas to other areas. It is difficult to achieve interconnection and interoperability between two areas. When one area is temporarily unable to supply gas, it is impossible to replenish the gas supply in time to ensure normal production and life. The announcement number is CN207108939U, which provides an industrial gas supply system, which relates to the field of gas supply technology. The industrial gas supply system includes a combustion-supporting gas device containing CO2, a gas generating device for generating gas, and / or a natural gas source device. The CO2 combustion-supporting gas device and the gas generating device or the natural gas source device are respectively connected to the gas user device. The gas supply system is only used to ensure the normal gas supply and use of industrial gas, and cannot ensure the interconnection of gas supply between regions. Utility Model Content

[0003] In view of the deficiencies in the prior art, the purpose of the utility model is to provide a cardboard heat dissipation and temperature reduction device on a logistics conveying line which has strong practicality and high automation length.

[0004] To achieve the above-mentioned purpose, the utility model provides a solution as follows: a remote control air supply system for bidirectional pressure supplementation and metering, comprising a main air pipe, a first air pipe, a second air pipe, a first return pipe, and a second return pipe, wherein the first air pipe is respectively connected to a first valve and a second valve, the second valve is connected to the first return pipe, the first valve is respectively connected to the second return pipe and the air inlet end of the main air pipe, a fifth valve, a filter, a first flow meter, and a second flow meter are sequentially arranged on the main air pipe along the air supply direction, the first return pipe and the air outlet end of the main air pipe are commonly connected to a third valve, and the third valve and the second return pipe are commonly connected to the second air pipe;

[0005] Wherein, a fourth valve is arranged on the second reflux pipe.

[0006] The beneficial effects of the present utility model are as follows: It realizes the interconnected gas supply between two regions. The system is provided with a main gas pipe, a first gas pipe, a second gas pipe, a first return pipe, and a second return pipe. The first gas pipe is connected to one region, and the second gas pipe is connected to another region. By cooperating with the opening and closing of the first valve, the second valve, the third valve, the fourth valve, and the fifth valve, the gas supply or gas reception from one region to another region is realized, thus achieving the interconnected gas supply between two regions. The overall system is simple and practical. At the same time, by opening the first valve and the fourth valve and closing the second valve, the third valve, and the fifth valve, the gas can pass through the second return pipe briefly without passing through the main gas pipe, so that the filter can be repaired and cleaned without stopping the gas supply.

[0007] Further, pressure transmitters are respectively provided on the first gas pipe and the second gas pipe. After the present utility model adopts the above structure, the pressures at both ends can be detected.

[0008] Further, the first valve, the second valve, the third valve, the fourth valve, and the fifth valve are all remote control electric ball valves or electromagnetic cut-off valves. After the present utility model adopts the above structure, the corresponding valves can be remotely controlled to be quickly opened and closed in case of emergency, without the need for personnel to be present for operation.

[0009] Further, a discharge pipe is connected to the bottom of the filter, and a switch valve is provided on the discharge pipe. After the present utility model adopts the above structure, it can cooperate with the repair and cleaning of the filter.

[0010] Further, a check valve is provided on the main gas pipe, and the check valve is located between the filter and the first flowmeter. After the present utility model adopts the above structure, it can prevent the gas from flowing back in the main gas pipe.

[0011] Further, a pressure regulator is provided on the main gas pipe, and the pressure regulator is located between the filter and the first flowmeter. After the present utility model adopts the above structure, it can regulate the pressure of the gas. Description of the Drawings

[0012] Figure 1 It is the overall structure diagram of the first embodiment of the present utility model.

[0013] Figure 2 It is the overall structure diagram of the second embodiment of the present utility model.

[0014] Wherein, 1 is the housing, 21 is the first gas pipe, 22 is the second gas pipe, 23 is the pressure transmitter, 3 is the main gas pipe, 31 is the fifth valve, 32 is the filter, 321 is the discharge pipe, 322 is the switch valve, 33 is the first flowmeter, 34 is the second flowmeter, 35 is the check valve, 36 is the pressure regulator, 41 is the first valve, 42 is the third valve, 5 is the first return pipe, 51 is the second valve, 6 is the second return pipe, 61 is the fourth valve, and 7 is the controller. Detailed implementation manners

[0015] The technical solutions of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0016] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present utility model. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance. Embodiment 1:

[0017] See the attached Figure 1 As shown, a remote control gas supply system for two-way pressure compensation and metering includes a main gas pipe 3, a first gas pipe 21, a second gas pipe 22, a first return pipe 5, a second return pipe 6, and a controller 7. The first gas pipe 21 is respectively connected with a first valve 41 and a second valve 51. The second valve 51 is connected to the first return pipe 5. The first valve 41 is respectively connected to the second return pipe 6 and the intake end of the main gas pipe 3. Along the gas supply direction on the main gas pipe 3, a fifth valve 31, a filter 32, a first flowmeter 33, and a second flowmeter 34 are sequentially arranged. The first return pipe 5 and the outlet end of the main gas pipe 3 are jointly connected to a third valve 42. The third valve 42 and the second return pipe 6 are jointly connected to the second gas pipe 22. The bottom of the filter 32 is connected with a discharge pipe 321, and a switch valve 322 is arranged on the discharge pipe 321.

[0018] In this embodiment, pressure transmitters 23 are respectively arranged on the first gas pipe 21 and the second gas pipe 22.

[0019] Among them, a fourth valve 61 is arranged on the second return pipe 6.

[0020] In this embodiment, the first valve 41, the second valve 51, the third valve 42, the fourth valve 61, and the fifth valve 31 are all remote control electric ball valves or electromagnetic cut-off valves.

[0021] In this embodiment, both the first flowmeter 33 and the second flowmeter 34 are one of ultrasonic flowmeters, turbine flowmeters, Roots meters, or diaphragm meters.

[0022] In this embodiment, two pressure transmitters 23, a first valve 41, a second valve 51, a third valve 42, a fourth valve 61, and a fifth valve 31 are respectively communicatively connected to a controller 7.

[0023] In this embodiment, a check valve 35 is provided on the main air duct 3, and the check valve 35 is located between the filter 32 and the first flowmeter 33.

[0024] In this embodiment, the first air duct 21 is connected to the first air supply area, and the second air duct 22 is connected to the second air supply area. This embodiment can realize the interconnection and mutual supply of the first air supply area and the second air supply area;

[0025] During normal air supply, the fifth valve 31 is normally open, the first valve 41 and the third valve 42 must be opened and closed simultaneously, and the second valve 51 and the fourth valve 61 must be opened and closed simultaneously;

[0026] When the first air supply area supplies air to the second air supply area, the first valve 41 and the third valve 42 are synchronously opened, and the second valve 51 and the fourth valve 61 are synchronously closed. Then, the gas in the first air supply area sequentially passes through the first air duct 21, the first valve 41, and then enters the main air duct 3. After passing through the fifth valve 31, the filter 32, the check valve 35, the first flowmeter 33, and the second flowmeter 34 on the main air duct 3 in sequence, finally, after passing through the third valve 42 and the second air duct 22, it is transported to the second air supply area;

[0027] When the second air supply area supplies air to the first air supply area, the first valve 41 and the third valve 42 are synchronously closed, and the second valve 51 and the fourth valve 61 are synchronously opened. Then, the gas in the second air supply area sequentially passes through the second air duct 22, enters the second return pipe 6, and then enters the main air duct 3. After passing through the fifth valve 31, the filter 32, the check valve 35, the first flowmeter 33, and the second flowmeter 34 on the main air duct 3 in sequence, finally, after passing through the first return pipe 5, the second switch valve 51, and the first air duct 21, it is transported to the first air supply area.

[0028] In this embodiment, in case of an emergency condition, the first valve 41, the second valve 51, the third valve 42, the fourth valve 61, and the fifth valve 31 can be remotely controlled by the controller 7 to be urgently closed, without the need for personnel to be present for operation, which is applicable to emergency rescue in case of third-party damage or insufficient pipeline network pressure caused by upstream short supply.

[0029] In this embodiment, by providing the first flowmeter 33 and the second flowmeter 34, with the first air supply area corresponding to the first flowmeter 33 and the second air supply area corresponding to the second flowmeter 34, mutual verification metering can be achieved.

[0030] This embodiment can supply gas strictly in accordance with the preset gas supply direction, such as supplying gas from the first gas supply area to the second gas supply area or from the second gas supply area to the first gas supply area, and realizes a double insurance of physical means (check valve 35) and numerical control switch valve, which will not cause the flowmeter to reverse or backfeed due to the upstream and downstream pressure difference, avoiding the further deterioration of the accident. Among them, the pressure transmitters 23 are mainly used to monitor the pressures of the first gas supply area and the second gas supply area. If the opened gas supply logic is opposite to the pressure difference direction, it is necessary to manually confirm again to open the valve.

[0031] In this embodiment, it is possible to repair and clean the filter 32 without stopping the gas supply. When the filter 32 is blocked or needs to be repaired, open the first valve 41 and the fourth valve 61, and close the second valve 51, the third valve 42, and the fifth valve 31. In this way, the gas in the first gas supply area can be briefly transported to the second gas supply area through the first gas guide pipe 21, the first valve 41, the second return pipe 6, and the second gas guide pipe 22, or the gas in the second gas supply area can be briefly transported to the first gas supply area through the second gas guide pipe 22, the second return pipe 6, the first valve 41, and the first gas guide pipe 21, so that the gas will not pass through the main gas pipe 3. At this time, the filter 32 can be cleaned in cooperation with the discharge pipe 321 and the switch valve 322, realizing the repair and cleaning of the filter 32 without stopping the gas supply. Embodiment Two:

[0032] See the appendix Figure 2 As shown, a remote control gas supply system for two-way pressure compensation and metering includes a main gas pipe 3, a first gas guide pipe 21, a second gas guide pipe 22, a first return pipe 5, a second return pipe 6, and a controller 7. The first gas guide pipe 21 is respectively connected with a first valve 41 and a second valve 51. The second valve 51 is connected to the first return pipe 5. The first valve 41 is respectively connected to the second return pipe 6 and the inlet end of the main gas pipe 3. Along the gas supply direction on the main gas pipe 3, a fifth valve 31, a filter 32, a first flowmeter 33, and a second flowmeter 34 are sequentially arranged. The first return pipe 5 and the outlet end of the main gas pipe 3 are jointly connected to a third valve 42. The third valve 42 and the second return pipe 6 are jointly connected to the second gas guide pipe 22. The bottom of the filter 32 is connected with a discharge pipe 321, and a switch valve 322 is arranged on the discharge pipe 321.

[0033] In this embodiment, pressure transmitters 23 are respectively arranged on the first gas guide pipe 21 and the second gas guide pipe 22.

[0034] Among them, a fourth valve 61 is arranged on the second return pipe 6.

[0035] In this embodiment, the first valve 41, the second valve 51, the third valve 42, the fourth valve 61, and the fifth valve 31 are all remote control electric ball valves or electromagnetic cut-off valves.

[0036] In this embodiment, the first flow meter 33 and the second flow meter 34 are both ultrasonic flow meters, turbine flow meters, Roots meters, or membrane meters.

[0037] In this embodiment, the two pressure transmitters 23 , the first valve 41 , the second valve 51 , the third valve 42 , the fourth valve 61 , and the fifth valve 31 are respectively communicatively connected to the controller 7 .

[0038] In this embodiment, a pressure regulator 36 is provided on the main air pipe 3 , and the pressure regulator 36 is located between the filter 32 and the first flow meter 33 .

[0039] In this embodiment, the first gas pipe 21 is connected to the municipal pipeline network, and the second gas pipe 22 is connected to the LNG peak-shaving enterprise. This embodiment can realize the interconnection and intercommunication of the municipal pipeline network and the LNG peak-shaving enterprise, wherein the LNG peak-shaving enterprise includes the LNG gas supply source and the gas-using enterprise;

[0040] During normal gas supply, the fifth valve 31 is normally open, the first valve 41 and the third valve 42 must be opened and closed at the same time, and the second valve 51 and the fourth valve 61 must be opened and closed at the same time;

[0041] When the municipal pipeline network supplies gas to the gas user, the first valve 41 and the third valve 42 are opened synchronously, and the second valve 51 and the fourth valve 61 are closed synchronously. Then, the gas from the municipal pipeline network passes through the first gas pipe 21 and the first valve 41 in sequence, and then enters the main gas pipe 3. After passing through the fifth valve 31, the filter 32, the pressure regulator 36, the first flow meter 33, and the second flow meter 34 on the main gas pipe 3 in sequence, it finally passes through the third valve 42 and the second gas pipe 22, and is delivered to the gas user.

[0042] When the LNG gas supply source supplies gas to the municipal pipeline network, the first valve 41 and the third valve 42 are closed synchronously, and the second valve 51 and the fourth valve 61 are opened synchronously. Then, the gas of the LNG gas supply source passes through the second gas pipe 22 in turn, enters the second return pipe 6, and then enters the main gas pipe 3. It passes through the fifth valve 31, the filter 32, the pressure regulator 36, the first flow meter 33, and the second flow meter 34 on the main gas pipe 3 in turn, and finally passes through the first return pipe 5, the second switch valve 51, and the first gas pipe 21 to be transported to the municipal pipeline network.

[0043] In this embodiment, when an emergency condition occurs, the first valve 41, the second valve 51, the third valve 42, the fourth valve 61, and the fifth valve 31 can be closed remotely by the controller 7 without the need for on-site personnel to operate. This is suitable for flexibly utilizing LNG gas supply sources to achieve stable gas pressure in gas-using enterprises and surrounding areas.

[0044] In this embodiment, by setting the first flowmeter 33 and the second flowmeter 34, with the municipal pipe network corresponding to the first flowmeter 33 and the LNG peak shaving enterprise corresponding to the second flowmeter 34, bilateral verification metering can be achieved.

[0045] This embodiment can supply gas strictly in accordance with the preset gas supply direction, such as supplying gas from the municipal pipe network to gas-using enterprises or supplying gas from the LNG gas supply source to the municipal pipe network, and realizes a double insurance of physical means (pressure regulator 36) and numerical control switch valve, so that the flowmeter will not reverse or supply gas in the opposite direction due to the upstream and downstream pressure differences, avoiding the further deterioration of accidents; among them, the pressure of the municipal pipe network and the LNG peak shaving enterprise is mainly monitored by the pressure transmitter 23. If the gas supply logic is opposite to the pressure difference direction, it is necessary to confirm again manually before opening the valve.

[0046] In this embodiment, it is possible to repair and clean the filter 32 without stopping the gas supply. When the filter 32 is blocked or needs to be repaired, open the first valve 41 and the fourth valve 61, and close the second valve 51, the third valve 42, and the fifth valve 31. In this way, the gas in the municipal pipe network can be briefly transported to the gas-using enterprise through the first gas conduit 21, the first valve 41, the second return pipe 6, and the second gas conduit 22, or the gas from the LNG gas supply source can be briefly transported to the municipal pipe network through the second gas conduit 22, the second return pipe 6, the first valve 41, and the first gas conduit 21, so that the gas will not pass through the main gas conduit 3. At this time, the filter 32 can be cleaned in cooperation with the discharge pipe 321 and the switch valve 322 to realize the repair and cleaning of the filter 32 without stopping the gas supply.

[0047] The above-described embodiments are only the preferred embodiments of the present invention, and do not impose any form of limitation on the present invention. Any person skilled in the art can make more possible changes and modifications to the technical solution of the present invention by using the disclosed technical content within the scope of the technical solution of the present invention, or modify it into an equivalent embodiment with equivalent changes. Therefore, all equivalent changes made according to the idea of the present invention without departing from the content of the technical solution of the present invention should be covered within the protection scope of the present invention.

Claims

1. A remote control gas supply system for bidirectional pressure supplementation and metering, comprising a main gas pipe (3), a first gas pipe (21), a second gas pipe (22), a first return pipe (5), and a second return pipe (6), characterized in that: The first air guide pipe (21) is respectively connected to a first valve (41) and a second valve (51); the second valve (51) is connected to a first return pipe (5); the first valve (41) is respectively connected to a second return pipe (6) and an air inlet end of a main air guide pipe (3); a fifth valve (31), a filter (32), a first flow meter (33), and a second flow meter (34) are sequentially arranged on the main air guide pipe (3) along an air supply direction; the first return pipe (5) and an air outlet end of the main air guide pipe (3) are commonly connected to a third valve (42); the third valve (42) and the second return pipe (6) are commonly connected to the second air guide pipe (22); Wherein, a fourth valve (61) is provided on the second reflux pipe (6).

2. A two-way pressure supplement and metering remote control gas supply system according to claim 1, characterized in that: The first air guide pipe (21) and the second air guide pipe (22) are respectively provided with a pressure transmitter (23).

3. A two-way pressure supplement and metering remote control gas supply system according to claim 2, characterized in that: The first valve (41), the second valve (51), the third valve (42), the fourth valve (61), and the fifth valve (31) are all remote-controlled electric ball valves or electromagnetic shut-off valves.

4. A two-way pressure supplement and metering remote control gas supply system according to claim 3, characterized in that: The bottom of the filter (32) is connected to a discharge pipe (321), and a switch valve (322) is provided on the discharge pipe (321).

5. A two-way pressure supplement and metering remote control gas supply system according to claim 4, characterized in that: The main air pipe (3) is provided with a check valve (35), and the check valve (35) is located between the filter (32) and the first flow meter (33).

6. A two-way pressure supplement and metering remote control gas supply system according to claim 4, characterized in that: A pressure regulator (36) is provided on the main air pipe (3), and the pressure regulator (36) is located between the filter (32) and the first flow meter (33).

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