Gas supply system utilizing hydrogen to store energy and regulate peak

Abstract

The utility model discloses a gas supply system utilizing hydrogen to store energy and regulate peak. The gas supply system comprises an electrolytic hydrogen production inlet flow regulating unit, a hydrogen pressurizing unit, a tube bundle truck hydrogen unloading unit, a hydrogen storage unit, an outlet pressure regulating unit and a remote control module, the electrolytic hydrogen production inlet flow adjusting unit is composed of an electrolytic header pipe, a flow adjusting valve group and a stop valve; the tube bundle truck hydrogen unloading unit is composed of a tube bundle truck, a hydrogen unloading column, a pressure sensor and a first pressure regulating valve group; the hydrogen storage unit consists of a hydrogen storage bottle group and a cut-off pipeline; the outlet pressure regulating unit is composed of a second pressure regulating valve group; the electrolysis header pipe is connected with the hydrogen pressurizing unit through a stop valve and a flow regulating valve group in sequence; a hydrogen storage unit is arranged between the hydrogen pressurizing unit and the outlet pressure regulating unit; the hydrogen pressurizing unit is connected with the outlet pressure regulating unit through a first pressure regulating valve group and the tube bundle truck hydrogen unloading unit; according to the utility model, the maximum utilization of hydrogen energy is realized through the remote control module, the stability of downstream gas supply is ensured, and the safety of gas supply is improved.

Description

Technical Field

[0001] The utility model belongs to the method of supplying gas by using hydrogen, and particularly relates to a gas supply system for energy storage and peak regulation by using hydrogen. Background Art

[0002] Hydrogen, as a new type of energy, is being used more and more. Compared with other energy storage methods, hydrogen energy storage has outstanding advantages in the energy dimension, time dimension and space dimension, and can play an important role in long-term energy storage. Narrow-sense hydrogen energy storage is the "electricity-hydrogen-electricity" mode, that is, using surplus, off-peak or low-quality electricity to produce hydrogen on a large scale, converting electrical energy into hydrogen energy for storage, and then using hydrogen to convert into electrical energy through a fuel cell or other means and transmit it to the grid when the power output is insufficient, playing the role of power regulation. Broad-sense hydrogen energy storage is the "electricity-hydrogen-X" mode, where X refers to fields such as transportation, chemical industry and steel, and it no longer generates electricity and goes back to the grid. Compared with narrow-sense hydrogen energy storage, broad-sense hydrogen energy storage has better economy. However, narrow-sense hydrogen energy storage "electricity-hydrogen-electricity" has two energy conversions, and the overall efficiency is low.

[0003] As a carrier for storing hydrogen, the hydrogen storage bottle group is opened when gas is needed downstream to solve the gas demand during the peak period of "X" downstream. In order to ensure the stability of the downstream gas supply pressure, a compressor and a pressure regulating valve group are essential devices. Summary of the Utility Model

[0004] Aiming at the problems of the existing technology, the utility model provides a gas supply system and method for energy storage and peak regulation by using hydrogen. The utility model realizes the maximum utilization of hydrogen energy through a remote control module, ensures the stability of the downstream gas supply, and improves the safety of the gas supply.

[0005] In order to solve the problems of the existing technology, the utility model adopts the following technical solutions:

[0006] A gas supply system for hydrogen energy storage and peak shaving, the gas supply system includes an electrolytic hydrogen production inlet flow regulating unit, a hydrogen gas boosting unit, a tube trailer hydrogen unloading unit, a hydrogen storage unit, an outlet pressure regulating unit and a remote control module; the electrolytic hydrogen production inlet flow regulating unit is composed of an electrolysis main pipe, a flow regulating valve group and a cut-off valve; the tube trailer hydrogen unloading unit is composed of a tube trailer, a hydrogen unloading column, a pressure sensor and a first pressure regulating valve group; the hydrogen storage unit is composed of a hydrogen storage bottle group and a cut-off pipeline; the outlet pressure regulating unit is composed of a second pressure regulating valve group; the electrolysis main pipe is sequentially connected to the hydrogen gas boosting unit through a cut-off valve and a flow regulating valve group; a hydrogen storage unit is arranged between the hydrogen gas boosting unit and the outlet pressure regulating unit; and the hydrogen gas boosting unit is also connected to the tube trailer hydrogen unloading unit through a first pressure regulating valve group between the hydrogen gas boosting unit and the outlet pressure regulating unit; wherein: the first pressure regulating valve group is composed of a first gas pipeline, a second gas pipeline and a third gas pipeline; wherein: the first gas pipeline and the second gas pipeline are both composed of solenoid valves; the third gas pipeline is composed of a solenoid valve and a pressure reducing valve; the input end of the first pressure regulating valve group is connected with a pressure sensor;

[0007] The second pressure regulating valve group is composed of a first gas pipeline, a second gas pipeline and a third gas pipeline; the first gas pipeline, the second gas pipeline and the third gas pipeline are all composed of solenoid valves and pressure reducing valves; the input end of the second pressure regulating valve group is connected with a first pressure sensor, and its output end is connected with a second pressure sensor.

[0008] Furthermore, the remote control module judges that the hydrogen pressure of the tube trailer hydrogen unloading unit is greater than the storage pressure of the downstream hydrogen storage unit through the pressure signal fed back by the pressure sensor, and starts the hydrogen of the tube trailer to directly fill the downstream hydrogen storage unit through the first pressure regulating valve group; the remote control module judges that the hydrogen pressure of the tube trailer is greater than the downstream gas supply pressure through the pressure signal fed back by the pressure sensor, and starts the first pressure regulating valve group and the second pressure regulating valve group to regulate the pressure for downstream gas supply; when the remote control module judges that the hydrogen pressure of the tube trailer is less than the downstream gas supply pressure, it starts the hydrogen gas boosting unit to supply hydrogen to the downstream gas consumption point; when the remote control module judges that neither electrolytic water hydrogen production nor the tube trailer can supply hydrogen or the gas supply volume is insufficient, it starts the hydrogen storage unit and the second pressure regulating valve group to continuously supply gas to the downstream.

[0009] Furthermore, the process of the remote control module starting the first pressure regulating valve group according to the signal transmitted by the pressure sensor includes: when the remote control module monitors that the pressure in the tube trailer is in the range of 1.6 MPa < P < 3 MPa, it starts the solenoid valve of the first gas pipeline, and closes the solenoid valves of the second gas pipeline and the third gas pipeline, and the gas flows through the first gas pipeline and is sent to the hydrogen gas boosting unit;

[0010] When the remote control module monitors that the pressure in the tube trailer is 3 MPa ≤ P < 10 MPa, the solenoid valve of the second gas pipeline is activated, and the solenoid valves of the first gas pipeline and the third gas pipeline are closed. The gas flows through the second gas pipeline and then enters the downstream gas supply main pipe. When the remote control module monitors that the pressure in the tube trailer is greater than 10 MPa, the solenoid valve of the third gas pipeline is activated, and the solenoid valves of the first gas pipeline and the second gas pipeline are closed. The gas flows through the third gas pipeline and is reduced in pressure to 10 MPa by a pressure reducing valve, and then is sent to the downstream pipeline to inflate the gas storage unit or is regulated by the second pressure regulating valve group and then enters the downstream gas supply main pipe.

[0011] Further, the process of the remote control module starting the second pressure regulating valve group according to the signals transmitted by the first pressure sensor and the second pressure sensor respectively includes:

[0012] When the remote control module monitors that the pressure signal fed back by the first pressure sensor is 8 MPa < P ≤ 10 MPa, the solenoid valve of the first gas pipeline is activated, and the pressure reducing valve of the first gas pipeline is adjusted to reduce the pressure to the set pressure. When the remote control module monitors that the pressure signal fed back by the second pressure sensor meets the conditions, the hydrogen is sent into the gas supply main pipe;

[0013] When the remote control module monitors that the pressure signal fed back by the first pressure sensor is 6 MPa < P ≤ 8 MPa, the solenoid valve of the second gas pipeline is activated, and the pressure reducing valve of the second gas pipeline is adjusted to reduce the pressure to the set pressure. When the remote control module monitors that the pressure signal fed back by the second pressure sensor meets the conditions, the hydrogen is sent into the gas supply main pipe;

[0014] When the remote control module monitors that the pressure signal fed back by the first pressure sensor is 3 MPa < P ≤ 6 MPa, the solenoid valve of the second gas pipeline is activated, and the pressure reducing valve of the second gas pipeline is adjusted to reduce the pressure to the set pressure. When the remote control module monitors that the pressure signal fed back by the second pressure sensor meets the conditions, the hydrogen is sent into the gas supply main pipe.

[0015] Beneficial effects

[0016] 1. The tube trailer unloading system of the present utility model adopts three cut-off valve groups to utilize the unloaded hydrogen in a stepped manner, and the hydrogen utilization rate is relatively high;

[0017] 2. The three valve pipelines of the downstream pressure regulating valve + cut-off valve in parallel of the present utility model can ensure the stability of the pressure regulating valve and reduce the selection range of the pressure regulating valve.

[0018] 3. The hydrogen storage bottle group of the present utility model can cooperate with the remote control module to play a role in peak shaving and hydrogen supply assistance, and supply gas to the downstream by matching the downstream gas consumption demand with the two upstream gas sources. Description of the drawings

[0019] Figure 1 It is a schematic diagram of the process of a gas supply system utilizing hydrogen energy storage for peak regulation according to the utility model.

[0020] Reference numerals

[0021] Electrolysis hydrogen production inlet flow regulating unit 101 electrolysis main pipe 102, flow regulating valve group 103 and cut-off valve 104

[0022] Hydrogen booster unit 201 Tube bundle car Hydrogen unloading unit 301 Tube bundle car 302 Hydrogen unloading column 303 Pressure sensor 304

[0023] First pressure regulating valve group 305 First gas pipeline 351 Second gas pipeline 352 Third gas pipeline 353

[0024] First pressure sensor 531 Second pressure sensor 532 Hydrogen storage unit 401 Hydrogen storage bottle group 402 Cut-off pipeline 403

[0025] Outlet pressure regulating unit 501 Second pressure regulating valve group 502 First gas pipeline 521 Second gas pipeline 522 Third gas pipeline 523 Remote control module 601 DETAILED DESCRIPTION

[0026] The following is combined with Figure 1 The utility model is described as follows:

[0027] like Figure 1As described above, the present invention provides a gas supply system for peak shaving using hydrogen energy storage. The gas supply system includes an electrolytic hydrogen production inlet flow regulation unit 101, a hydrogen gas boosting unit 201, a tube trailer hydrogen unloading unit 301, a hydrogen storage unit 401, an outlet pressure regulation unit 501, and a remote control module 601. The electrolytic hydrogen production inlet flow regulation unit 101 is composed of an electrolysis main pipe 102, a flow regulating valve group 103, and a cut-off valve 104. The electrolysis main pipe 102 of the gas supply system and the tube trailer 302 are two main gas sources for gas supply. According to the downstream gas consumption demand, the hydrogen storage unit serves as energy storage for peak shaving of downstream gas consumption. Among them, when the tube trailer 302 unloads hydrogen, the first pressure regulating valve group 305 and the second pressure regulating valve group 502 are used to utilize hydrogen with different pressure gradients. The tube trailer hydrogen unloading unit 301 is composed of a tube trailer 302, a hydrogen unloading column 303, a pressure sensor 304, and a first pressure regulating valve group 305. The hydrogen storage unit 401 is composed of a hydrogen storage bottle group 402 and a cut-off pipeline 403. The outlet pressure regulation unit 501 includes a second pressure regulating valve group 502. The electrolysis main pipe 102 is sequentially connected to the hydrogen gas boosting unit 201 through the flow regulating valve group 103 and the cut-off valve 104. A hydrogen storage unit is arranged between the hydrogen gas boosting unit 201 and the outlet pressure regulation unit 501. And the hydrogen gas boosting unit 201 is also connected to the tube trailer hydrogen unloading unit 301 through the first pressure regulating valve group 305 between the hydrogen gas boosting unit 201 and the outlet pressure regulation unit 501. Among them:

[0028] The remote control module 601 judges that the hydrogen pressure of the tube trailer hydrogen unloading unit is greater than the storage pressure of the downstream gas storage unit through the pressure signal fed back by the pressure sensor 304, and starts the hydrogen of the tube trailer 302 to directly fill the downstream gas storage unit through the first pressure regulating valve group 305. The remote control module 601 judges that the hydrogen pressure of the tube trailer is greater than the downstream gas supply pressure through the pressure signal fed back by the pressure sensor 304, and starts the first pressure regulating valve group 305 and the second pressure regulating valve group 502 to regulate the pressure for downstream gas supply. When the remote control module judges that the hydrogen pressure of the tube trailer 302 is less than the downstream gas supply pressure, it starts the hydrogen gas boosting unit 201 to supply hydrogen to the downstream gas consumption point. The remote control module 601 judges that the gas supply of the tube trailer 302 is insufficient through the pressure signal fed back by the pressure sensor 304, and simultaneously starts the hydrogen storage unit 402 and the second pressure regulating valve group 502 to continuously supply gas to the downstream.

[0029] The first pressure regulating valve group 305 is composed of a first gas pipeline 351, a second gas pipeline 352, and a third gas pipeline 353. Among them: the first gas pipeline 351 and the second gas pipeline 352 are both composed of solenoid valves. The third gas pipeline 353 is composed of a solenoid valve and a pressure reducing valve. The input end of the first pressure regulating valve group 305 is connected with a pressure sensor. Among them: the working process of the remote control module starting the first pressure regulating valve group according to the signal transmitted by the pressure sensor includes:

[0030] When the remote control module 601 monitors that the pressure in the tube bundle vehicle is in the range of 1.6 MPa < P < 3 MPa, the solenoid valve of the first gas pipeline 351 is activated, and the solenoid valves of the second gas pipeline 352 and the third gas pipeline 353 are closed. The gas flows through the first gas pipeline 351 and is sent to the hydrogen booster unit 201;

[0031] When the remote control module 601 monitors that the pressure in the tube bundle vehicle is in the range of 3 MPa ≤ P < 10 MPa, the solenoid valve of the second gas pipeline 352 is activated, and the solenoid valves of the first gas pipeline 351 and the third gas pipeline 353 are closed. The gas flows through the second gas pipeline 352 and then enters the downstream gas supply main pipe;

[0032] When the remote control module 601 monitors that the pressure in the tube bundle vehicle is greater than 10 MPa, the solenoid valve of the third gas pipeline is activated, and the solenoid valves of the first gas pipeline 351 and the second gas pipeline 352 are closed. The gas flows through the third gas pipeline 353, is reduced in pressure to 10 MPa through a pressure reducing valve, and is sent to the downstream pipeline to inflate the gas storage unit or is regulated by the second pressure regulating valve group 502 and then enters the downstream gas supply main pipe.

[0033] The second pressure regulating valve group 502 is composed of a first gas pipeline 521, a second gas pipeline 522, and a third gas pipeline 523; the first gas pipeline 521, the second gas pipeline 522, and the third gas pipeline 523 are all composed of a solenoid valve and a pressure reducing valve; a first pressure sensor 531 is connected to the input end of the second pressure regulating valve group 502, and a second pressure sensor 532 is connected to the output end thereof; wherein: the process of the remote control module 601 starting the second pressure regulating valve group 502 according to the signals transmitted by the first pressure sensor 531 and the second pressure sensor 532 includes:

[0034] When the remote control module 601 monitors that the pressure signal feedback by the first pressure sensor 531 is in the range of 8 MPa < P ≤ 10 MPa, the solenoid valve of the first gas pipeline 521 is activated, and the pressure reducing valve of the first gas pipeline 521 is adjusted to reduce the pressure to the set pressure; when the remote control module 601 monitors that the pressure signal feedback by the second pressure sensor 532 meets the condition, the hydrogen is sent to the gas supply main pipe;

[0035] When the remote control module 601 monitors that the pressure signal feedback by the first pressure sensor 531 is in the range of 6 MPa < P ≤ 8 MPa, the solenoid valve of the second gas pipeline 522 is activated, and the pressure reducing valve of the second gas pipeline 522 is adjusted to reduce the pressure to the set pressure; when the remote control module 601 monitors that the pressure signal feedback by the second pressure sensor 532 meets the condition, the hydrogen is sent to the gas supply main pipe;

[0036] When the remote control module 601 monitors that the pressure signal fed back by the first pressure sensor 531 is within the range of 3 MPa < P ≤ 6 MPa, it activates the solenoid valve of the third gas pipeline 523 and adjusts the pressure reducing valve of the third gas pipeline 523 to reduce the pressure to the set pressure; when the remote control module 601 monitors that the pressure signal fed back by the second pressure sensor 532 meets the condition, it feeds hydrogen into the gas supply main pipe.

[0037] Although the present invention has been described above, the present invention is not limited to the above specific embodiments. The above specific embodiments are merely illustrative and not restrictive. Under the inspiration of the present invention, those of ordinary skill in the art can make many variations without departing from the purpose of the present invention, and these all fall within the protection scope of the present invention.

Claims

1. A gas supply system for energy storage and peak shaving using hydrogen, characterized in that: The gas supply system includes an electrolytic hydrogen production inlet flow regulation unit, a hydrogen gas boosting unit, a tube trailer hydrogen unloading unit, a hydrogen storage unit, an outlet pressure regulation unit, and a remote control module; the electrolytic hydrogen production inlet flow regulation unit consists of an electrolysis main pipe, a flow regulating valve group, and a cut-off valve; the tube trailer hydrogen unloading unit consists of a tube trailer, a hydrogen unloading column, a pressure sensor, and a first pressure regulating valve group; the hydrogen storage unit consists of a hydrogen storage bottle group and a cut-off pipeline; the outlet pressure regulation unit consists of a second pressure regulating valve group; the electrolysis main pipe is sequentially connected to the hydrogen gas boosting unit through the cut-off valve and the flow regulating valve group; a hydrogen storage unit is arranged between the hydrogen gas boosting unit and the outlet pressure regulation unit; and the hydrogen gas boosting unit is also connected to the tube trailer hydrogen unloading unit through the first pressure regulating valve group; where: The first pressure regulating valve group consists of a first gas pipeline, a second gas pipeline, and a third gas pipeline; where: the first gas pipeline and the second gas pipeline are both composed of solenoid valves; the third gas pipeline is composed of a solenoid valve and a pressure reducing valve; the input end of the first pressure regulating valve group is connected with a pressure sensor; The second pressure regulating valve group consists of a first gas pipeline, a second gas pipeline, and a third gas pipeline; the first gas pipeline, the second gas pipeline, and the third gas pipeline are all composed of a solenoid valve and a pressure reducing valve; the input end of the second pressure regulating valve group is connected with a first pressure sensor, and its output end is connected with a second pressure sensor.

2. The gas supply system for peak shaving by using hydrogen energy storage according to claim 1, characterized in that: The remote control module judges that the hydrogen pressure of the tube trailer hydrogen unloading unit is greater than the storage pressure of the downstream gas storage unit through the pressure signal fed back by the pressure sensor, and starts the hydrogen of the tube trailer to directly fill the downstream gas storage unit through the first pressure regulating valve group; the remote control module judges that the hydrogen pressure of the tube trailer is greater than the downstream gas supply pressure through the pressure signal fed back by the pressure sensor, and starts the first pressure regulating valve group and the second pressure regulating valve group to regulate the pressure for downstream gas supply; the remote control module judges that the hydrogen pressure of the tube trailer is less than the downstream gas supply pressure, and starts the hydrogen gas boosting unit to supply hydrogen to the downstream gas consumption point; the remote control module judges that neither electrolytic water hydrogen production nor the tube trailer can supply hydrogen or the gas supply volume is insufficient, and simultaneously starts the hydrogen storage unit and the second pressure regulating valve group to continuously supply gas to the downstream.

3. The gas supply system for peak shaving by using hydrogen energy storage according to claim 1, wherein: The working process of the remote control module starting the first pressure regulating valve group according to the signal transmitted by the pressure sensor includes: When the remote control module monitors that the pressure in the tube trailer is in the range of 1.6 MPa < P < 3 MPa, the solenoid valve of the first gas pipeline is started, and the solenoid valves of the second gas pipeline and the third gas pipeline are closed, and the gas flows through the first gas pipeline and is sent into the hydrogen gas boosting unit; When the remote control module monitors that the pressure in the tube bundle vehicle is 3 MPa ≤ P < 10 MPa, the solenoid valve of the second gas pipeline is activated, and the solenoid valves of the first gas pipeline and the third gas pipeline are closed. The gas flows through the second gas pipeline and then enters the downstream gas supply main pipe. When the remote control module monitors that the pressure in the tube bundle vehicle is greater than 10 MPa, the solenoid valve of the third gas pipeline is activated, and the solenoid valves of the first gas pipeline and the second gas pipeline are closed. The gas flows through the third gas pipeline and is reduced in pressure to 10 MPa by a pressure reducing valve, and then is sent to the downstream pipeline to inflate the gas storage unit or is regulated by the second pressure regulating valve group and then enters the downstream gas supply main pipe.

4. A gas supply system for peak shaving using hydrogen energy storage, as claimed in claim 1, wherein: The process of the remote control module starting the second pressure regulating valve group according to the signals transmitted by the first pressure sensor and the second pressure sensor respectively includes: When the remote control module monitors that the pressure signal fed back by the first pressure sensor is 8 MPa < P ≤ 10 MPa, the solenoid valve of the first gas pipeline is activated, and the pressure reducing valve of the first gas pipeline is adjusted to reduce the pressure to the set pressure. When the remote control module monitors that the pressure signal fed back by the second pressure sensor meets the conditions, the hydrogen is sent into the gas supply main pipe; When the remote control module monitors that the pressure signal fed back by the first pressure sensor is 6 MPa < P ≤ 8 MPa, the solenoid valve of the second gas pipeline is activated, and the pressure reducing valve of the second gas pipeline is adjusted to reduce the pressure to the set pressure. When the remote control module monitors that the pressure signal fed back by the second pressure sensor meets the conditions, the hydrogen is sent into the gas supply main pipe; When the remote control module monitors that the pressure signal fed back by the first pressure sensor is 3 MPa < P ≤ 6 MPa, the solenoid valve of the second gas pipeline is activated, and the pressure reducing valve of the second gas pipeline is adjusted to reduce the pressure to the set pressure. When the remote control module monitors that the pressure signal fed back by the second pressure sensor meets the conditions, the hydrogen is sent into the gas supply main pipe.

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