阅读说明：本技术 一种适用于加氢站的冷水机组及其使用方法 (Water chilling unit suitable for hydrogen filling station and use method thereof ) 是由 方沛军 姜方 宣锋 张晓飞 伍远安 曹俊 于 2021-08-13 设计创作，主要内容包括：本发明的一种适用于加氢站的冷水机组。本发明包括压缩机冷水机组和加氢机冷水机组；第一蒸发器和第二蒸发器通过连接管路形成闭合回路,连接管路包括第一连接管和第二连接管,第一连接管的一端与第二管路相连通,且位于第一水泵和第一阀门之间,另一端与第二蒸发器相连通,第一连接管上设有第三阀门,第二连接管的一端与第一蒸发器相连通,另一端与第四管路相连通,且位于第二换热器和第二阀门之间,第二连接管上设有第四阀门。一种如上述的适用于加氢站的冷水机组的使用方法,其特征在于：包括三种工作模式：压缩机换热模式、加氢机换热模式和联动工作模式。本发明将压缩机冷水机组和加氢机冷水机组合二为一,这样可以缩短加氢时间。(The invention relates to a water chilling unit suitable for a hydrogen filling station. The invention comprises a compressor water chilling unit and a hydrogenation machine water chilling unit; the first evaporator and the second evaporator form a closed loop through a connecting pipeline, the connecting pipeline comprises a first connecting pipe and a second connecting pipe, one end of the first connecting pipe is communicated with the second pipeline and is located between the first water pump and the first valve, the other end of the first connecting pipe is communicated with the second evaporator, a third valve is arranged on the first connecting pipe, one end of the second connecting pipe is communicated with the first evaporator, the other end of the second connecting pipe is communicated with a fourth pipeline and is located between the second heat exchanger and the second valve, and a fourth valve is arranged on the second connecting pipe. A use method of the water chilling unit suitable for the hydrogen filling station is characterized in that: the method comprises three working modes: the heat exchange system comprises a compressor heat exchange mode, a hydrogenation machine heat exchange mode and a linkage working mode. The invention combines the compressor water chilling unit and the hydrogenation machine water chilling unit into a whole, thus shortening the hydrogenation time.)

1. The utility model provides a cooling water set suitable for hydrogenation station which characterized in that: comprises a compressor water chilling unit (1) and a hydrogenation machine water chilling unit (2);

the compressor water chilling unit (1) comprises a first refrigeration compressor (11), a first evaporator (12) and a first water pump (13), the first refrigeration compressor (11) and the first evaporator (12) form a closed loop through a first pipeline (3), the shell side of the first heat exchanger (9) and the first evaporator (12) form a closed loop through a second pipeline (4), the tube side of the first heat exchanger (9) is communicated with a hydrogen source pressurized by the compressor, the first water pump (13) is arranged on the second pipeline (4), the water inlet end of the first water pump (13) is communicated with the first evaporator (12), the water outlet end of the first water pump (13) is communicated with the shell pass of the first heat exchanger (9), a first valve (41) is arranged on the second pipeline (4), and is arranged between the first water pump (13) and the first heat exchanger (9);

the hydrogenation machine water chilling unit (2) comprises a second refrigeration compressor (21), a second evaporator (22) and a second water pump (23), the second refrigeration compressor (21) and the second evaporator (22) form a closed loop through a third pipeline (5), the shell side of the second heat exchanger (10) and the second evaporator (22) form a closed loop through a fourth pipeline (6), the tube side of the second heat exchanger (10) is communicated with a hydrogen pre-cooling hydrogen source of a hydrogenation machine, the second water pump (23) is arranged on the fourth pipeline (6), the water inlet end of the second water pump (23) is communicated with the second evaporator (22), the water outlet end of the second water pump (23) is communicated with the shell pass of the second heat exchanger (10), a second valve (61) is arranged on the fourth pipeline (6), and is arranged between the second water pump (23) and the second heat exchanger (10);

first evaporimeter (12) and second evaporimeter (22) form closed circuit through connecting line, and connecting line includes first connecting pipe (7) and second connecting pipe (8), and the one end and second pipeline (4) of first connecting pipe (7) are linked together, and are located between first water pump (13) and first valve (41), and the other end is linked together with second evaporimeter (22), is equipped with third valve (71) on first connecting pipe (7), the one end and the first evaporimeter (12) of second connecting pipe (8) are linked together, and the other end is linked together with fourth pipeline (6), and is located between second heat exchanger (10) and second valve (61), be equipped with fourth valve (81) on second connecting pipe (8).

2. The water chiller unit suitable for use in a hydrogen station as set forth in claim 1, wherein: the first valve (41), the second valve (61), the third valve (71) and the fourth valve (81) are all electromagnetic valves.

3. The water chiller unit suitable for use in a hydrogen station as set forth in claim 2, wherein: the water chilling unit further comprises a controller, and the controller is electrically connected with the first valve (41), the second valve (61), the third valve (71) and the fourth valve (81).

4. The water chiller unit suitable for use in a hydrogen station as set forth in claim 3, wherein: the heat exchanger is characterized in that a first temperature sensor (42) is arranged on the second pipeline (4), the first temperature sensor (42) is located on a pipeline section between the first valve (41) and the first water pump (13), a second temperature sensor (62) is arranged on the fourth pipeline (6), and the second temperature sensor (62) is located on a pipeline section between the second heat exchanger (10) and the second water pump (23).

5. The water chiller unit suitable for use in a hydrogen station of claim 4 wherein: the controller is electrically connected with the first temperature sensor (42), the second temperature sensor (62), the first refrigeration compressor (11) and the second refrigeration compressor (21).

6. The use method of the water chiller unit for the hydrogen station as set forth in claim 5, wherein: the method comprises three working modes: a compressor heat exchange mode, a hydrogenation machine heat exchange mode and a linkage working mode;

the compressor heat exchange mode is suitable for the condition that the hydrogenation task is light, hydrogen only needs to be pressurized into the hydrogen storage tank, the compressor water chilling unit (1) is used independently, and the hydrogenation machine does not need cooling water for heat exchange;

the heat exchange mode of the hydrogenation machine is used for light hydrogenation task, only hydrogen in a hydrogen storage tank needs to be filled into equipment to be inflated through the hydrogenation machine, and the cold water unit (2) of the hydrogenation machine is independently used for precooling the hydrogen entering the hydrogenation machine in advance;

the linkage working mode is suitable for the use condition with heavy hydrogenation tasks, hydrogen in the hydrogen storage tank is required to be pressurized into the hydrogen storage tank, meanwhile, the hydrogen in the hydrogen storage tank is filled into equipment to be inflated through a hydrogenation machine, and a compressor water chilling unit (1) and a hydrogenation machine water chilling unit (2) are jointly used.

7. The use method of the water chilling unit suitable for the hydrogen filling station as claimed in claim 6, wherein: the specific working process of the heat exchange mode of the compressor is as follows: -opening only the first valve (41), closing the second (61), third (71) and fourth (81) valves; the first water pump (13) is normally opened, cooling water enters the first water pump (13) from the first evaporator (12), is pumped into the shell side of the first heat exchanger (9), cools hydrogen in the tube side of the first heat exchanger (9), and then returns to the first evaporator (12), and the controller controls the first refrigeration compressor (11) according to the water temperature detected by the first temperature sensor (42);

the heat exchange mode of the hydrogenation machine comprises the following specific working procedures: only opening the second valve (61), enabling the second water pump (23) to be normally opened, enabling cooling water to enter the second water pump (23) from the second evaporator (22), driving the cooling water into the shell side of the second heat exchanger (10), cooling hydrogen in the tube side of the second heat exchanger (10), and returning the cooling water to the second evaporator (22), wherein the controller controls the second refrigeration compressor (21) according to the water temperature detected by the second temperature sensor (62);

the specific working process of the linkage working mode is as follows: the second valve (61) is closed, the first valve (41), the third valve (71) and the fourth valve (81) are opened, the first water pump (13) and the second water pump (23) are always in an opening state, the first water pump (13) not only provides cooling water for the compressor, but also pumps the cooling water into the second evaporator (22) to serve as a water source of the second water pump (23), and the controller controls the first refrigeration compressor (11) and the second refrigeration compressor (21) according to the water temperatures detected by the first temperature sensor (42) and the second temperature sensor (62) respectively.

Technical Field

The invention relates to the technical field of hydrogenation stations, in particular to a water chilling unit suitable for a hydrogenation station and a using method thereof.

Background

The existing water chilling unit equipped for the hydrogen station is not specially suitable for equipment of the hydrogen station, the water chilling unit is usually required to be configured for compression equipment and a hydrogen machine, according to the actual use working condition of the hydrogen station at the current stage, because the hydrogen process is very fast, a large amount of cold energy is provided for heat exchange in a short time according to the requirement of the water chilling unit of the hydrogen machine, meanwhile, the temperature of outlet water is lower than the normal temperature, if the water chilling unit of the hydrogen machine is in a real-time standby state, a large amount of electric energy can be consumed, and the water chilling unit is in a shutdown state, although the electric energy can be saved, a certain time is required for enabling the water temperature to reach a usable state, and the water chilling unit can not be accepted by the hydrogen station requiring rapid hydrogen.

Disclosure of Invention

The invention aims to provide a water chilling unit suitable for a hydrogenation station and a use method thereof, which can save energy consumption and improve hydrogenation rate, aiming at the defects in the prior art.

The invention relates to a water chilling unit suitable for a hydrogenation station, which comprises a compressor water chilling unit and a hydrogenation machine water chilling unit;

the compressor water chilling unit comprises a first refrigeration compressor, a first evaporator and a first water pump, wherein the first refrigeration compressor and the first evaporator form a closed loop through a first pipeline, a shell pass of the first heat exchanger and the first evaporator form a closed loop through a second pipeline, a tube pass of the first heat exchanger is communicated with a hydrogen source pressurized by the compressor, the first water pump is arranged on the second pipeline, a water inlet end of the first water pump is communicated with the first evaporator, a water outlet end of the first water pump is communicated with the shell pass of the first heat exchanger, and a first valve is arranged on the second pipeline and is arranged between the first water pump and the first heat exchanger;

the water chilling unit of the hydrogenation machine comprises a second refrigeration compressor, a second evaporator and a second water pump, wherein the second refrigeration compressor and the second evaporator form a closed loop through a third pipeline, a shell pass of a second heat exchanger and the second evaporator form a closed loop through a fourth pipeline, a tube pass of the second heat exchanger is communicated with a hydrogen pre-cooling source of the hydrogenation machine, the second water pump is arranged on the fourth pipeline, a water inlet end of the second water pump is communicated with the second evaporator, a water outlet end of the second water pump is communicated with the shell pass of the second heat exchanger, and a second valve is arranged on the fourth pipeline and is arranged between the second water pump and the second heat exchanger;

the first evaporator and the second evaporator form a closed loop through a connecting pipeline, the connecting pipeline comprises a first connecting pipe and a second connecting pipe, one end of the first connecting pipe is communicated with the second pipeline and is located between the first water pump and the first valve, the other end of the first connecting pipe is communicated with the second evaporator, a third valve is arranged on the first connecting pipe, one end of the second connecting pipe is communicated with the first evaporator, the other end of the second connecting pipe is communicated with a fourth pipeline and is located between the second heat exchanger and the second valve, and a fourth valve is arranged on the second connecting pipe.

Further, the first valve, the second valve, the third valve and the fourth valve are all solenoid valves.

Furthermore, the water chilling unit also comprises a controller, and the controller is electrically connected with the first valve, the second valve, the third valve and the fourth valve.

And a first temperature sensor is arranged on the second pipeline, the first temperature sensor is positioned on the pipeline section between the first valve and the first water pump, a second temperature sensor is arranged on the fourth pipeline, and the second temperature sensor is positioned on the pipeline section between the second heat exchanger and the second water pump.

The controller is electrically connected with the first temperature sensor, the second temperature sensor, the first refrigeration compressor and the second refrigeration compressor.

A use method of the water chilling unit suitable for the hydrogen filling station is characterized in that: the method comprises three working modes: a compressor heat exchange mode, a hydrogenation machine heat exchange mode and a linkage working mode;

the compressor heat exchange mode is suitable for the condition that the hydrogenation task is light, hydrogen only needs to be pressurized into the hydrogen storage tank, the compressor water chilling unit is used independently, and the hydrogenation machine does not need cooling water for heat exchange;

the heat exchange mode of the hydrogenation machine is used for light hydrogenation tasks, only hydrogen in a hydrogen storage tank needs to be filled into equipment to be inflated through the hydrogenation machine, and a water chilling unit of the hydrogenation machine is independently used for precooling the hydrogen entering the hydrogenation machine in advance;

the linkage working mode is suitable for the use condition with heavy hydrogenation tasks, hydrogen in the hydrogen storage tank is required to be pressurized into the hydrogen storage tank, meanwhile, the hydrogen in the hydrogen storage tank is also filled into equipment to be inflated through the hydrogenation machine, and the compressor water chilling unit and the hydrogenation machine water chilling unit are jointly used.

Further, the specific working flow of the heat exchange mode of the compressor is as follows: opening only the first valve, and closing the second valve, the third valve and the fourth valve; the first water pump is normally open, cooling water enters the first water pump from the first evaporator, is pumped into the shell pass of the first heat exchanger, cools hydrogen in the tube pass of the first heat exchanger, and then returns to the first evaporator, and the first refrigeration compressor is started and stopped according to water temperature;

the heat exchange mode of the hydrogenation machine comprises the following specific working procedures: only opening the second valve, wherein the second water pump is normally opened, cooling water enters the second water pump from the second evaporator, is pumped into the shell side of the second heat exchanger, cools hydrogen in the tube side of the second heat exchanger, and then returns to the second evaporator, and the second refrigeration compressor is started and stopped according to the water temperature;

the specific working process of the linkage working mode is as follows: and closing the second valve, opening the first valve, the third valve and the fourth valve, enabling the first water pump and the second water pump to be always in an open state, enabling the first water pump to provide cooling water for the compressor, pumping the cooling water into the second evaporator to serve as a water source of the second water pump, and enabling the first refrigeration compressor and the second refrigeration compressor to be started and stopped according to the water temperature condition.

The water chilling unit suitable for the hydrogenation station combines the compressor water chilling unit and the hydrogenation machine water chilling unit into a whole, so that the hydrogenation time can be shortened, the energy conservation can be well balanced, and the two water chilling units can be used as an integral device after being combined into a whole, so that the device is more compact.

Drawings

Fig. 1 is a schematic structural diagram of a water chilling unit suitable for a hydrogen filling station according to the present invention.

1. A compressor water chilling unit; 11. a first refrigeration compressor; 12. a first evaporator; 13. a first water pump; 2. a hydrogenation machine water chilling unit; 21. a second refrigeration compressor; 22. a second evaporator; 23. a second water pump; 3. a first pipeline; 4. a second pipeline; 41. a first valve; 42. a first temperature sensor; 5. a third pipeline; 6. a fourth pipeline; 61. a second valve; 62. a second temperature sensor; 7. a first connecting pipe; 71. a third valve; 8. a second connecting pipe; 81. a fourth valve; 9. a first heat exchanger; 10. a second heat exchanger.

Detailed Description

The following are specific embodiments of the present invention and are further described with reference to the drawings, but the present invention is not limited to these embodiments.

As shown in fig. 1, the water chilling unit suitable for the hydrogenation station of the present invention comprises a compressor water chilling unit 1 and a hydrogenation unit water chilling unit 2;

the compressor water chilling unit 1 comprises a first refrigeration compressor 11, a first evaporator 12 and a first water pump 13, wherein the first refrigeration compressor 11 and the first evaporator 12 form a closed loop through a first pipeline 3, a shell pass of a first heat exchanger 9 and the first evaporator 12 form a closed loop through a second pipeline 4, a tube pass of the first heat exchanger 9 is communicated with a hydrogen source after pressurization of the compressor, the first water pump 13 is arranged on the second pipeline 4, a water inlet end of the first water pump 13 is communicated with the first evaporator 12, a water outlet end of the first water pump 13 is communicated with the shell pass of the first heat exchanger 9, and a first valve 41 is arranged on the second pipeline 4 and is arranged between the first water pump 13 and the first heat exchanger 9;

the water chilling unit 2 of the hydrogenation machine comprises a second refrigeration compressor 21, a second evaporator 22 and a second water pump 23, the second refrigeration compressor 21 and the second evaporator 22 form a closed loop through a third pipeline 5, the shell side of a second heat exchanger 10 and the second evaporator 22 form a closed loop through a fourth pipeline 6, the tube side of the second heat exchanger 10 is communicated with a hydrogen pre-cooling source of the hydrogenation machine, the second water pump 23 is arranged on the fourth pipeline 6, the water inlet end of the second water pump 23 is communicated with the second evaporator 22, the water outlet end of the second water pump 23 is communicated with the shell side of the second heat exchanger 10, and a second valve 61 is arranged on the fourth pipeline 6 and is arranged between the second water pump 23 and the second heat exchanger 10;

first evaporator 12 and second evaporator 22 form closed circuit through connecting tube, connecting tube includes first connecting pipe 7 and second connecting pipe 8, the one end and the second pipeline 4 of first connecting pipe 7 are linked together, and be located between first water pump 13 and the first valve 41, the other end is linked together with second evaporator 22, be equipped with third valve 71 on the first connecting pipe 7, the one end and the first evaporator 12 of second connecting pipe 8 are linked together, the other end is linked together with fourth pipeline 6, and be located between second heat exchanger 10 and the second valve 61, be equipped with fourth valve 81 on the second connecting pipe 8.

The water chilling unit suitable for the hydrogenation station combines the compressor water chilling unit 1 and the hydrogenation unit water chilling unit 2 into a whole, so that the hydrogenation time can be shortened, the energy conservation can be well balanced, and the two water chilling units can be used as an integral device after being combined, so that the device is more compact.

The first valve 41, the second valve 61, the third valve 71 and the fourth valve 81 may all be electromagnetic valves, and the water chilling unit further includes a controller (not shown in the figure), the controller is electrically connected with the second valve 61, the third valve 71 and the fourth valve 81, and the controller controls the opening and closing of the first valve 41, the second valve 61, the third valve 71 and the fourth valve 81.

A first temperature sensor 42 may be disposed on the second pipeline 4, the first temperature sensor 42 is located on a pipeline section between the first valve 41 and the first water pump 13, a second temperature sensor 62 is disposed on the fourth pipeline 6, and the second temperature sensor 62 is located on a pipeline section between the second heat exchanger 10 and the second water pump 23. The first temperature sensor 42 and the second temperature sensor 62 are used to detect the temperature of the water in the pipeline.

Further, the controller is electrically connected to the first temperature sensor 42, the second temperature sensor 62, the first refrigeration compressor 11, and the second refrigeration compressor 21. The controller controls the amount of cooling provided by the first and second refrigeration compressors 11 and 21 based on the temperature of the water detected by the first and second temperature sensors 42 and 62.

The use method of the water chilling unit suitable for the hydrogen filling station comprises three working modes: a compressor heat exchange mode, a hydrogenation machine heat exchange mode and a linkage working mode;

the compressor heat exchange mode is suitable for the condition that the hydrogenation task is light, hydrogen only needs to be pressurized into the hydrogen storage tank, the compressor water chilling unit 1 is used independently, and the hydrogenation machine does not need cooling water for heat exchange;

the heat exchange mode of the hydrogenation machine is used for light hydrogenation tasks, hydrogen in a hydrogen storage tank is only required to be filled into equipment to be inflated through the hydrogenation machine, and the hydrogen entering the hydrogenation machine is pre-cooled in advance under the condition that the water chilling unit 2 of the hydrogenation machine is used independently;

the linkage working mode is suitable for the use condition with heavy hydrogenation tasks, hydrogen in the hydrogen storage tank is required to be pressurized into the hydrogen storage tank, meanwhile, the hydrogen in the hydrogen storage tank is also filled into equipment to be inflated through the hydrogenation machine, and the compressor water chilling unit 1 and the hydrogenation machine water chilling unit 2 are jointly used.

The specific working flow of the heat exchange mode of the compressor is as follows: only the first valve 41 is opened, and the second valve 61, the third valve 71 and the fourth valve 81 are closed; the first water pump 13 is normally open, cooling water enters the first water pump 13 from the first evaporator 12, is pumped into the shell pass of the first heat exchanger 9, cools hydrogen in the tube pass of the first heat exchanger 9, and then returns to the first evaporator 12, and the first refrigeration compressor 11 is started and stopped according to water temperature;

the specific working flow of the heat exchange mode of the hydrogenation machine is as follows: only the second valve 61 is opened, the second water pump 23 is normally opened, cooling water enters the second water pump 23 from the second evaporator 22, is pumped into the shell pass of the second heat exchanger 10, cools hydrogen in the tube pass of the second heat exchanger 10, and then returns to the second evaporator 22, and the second refrigeration compressor 21 is started and stopped according to water temperature;

the specific working process of the linkage working mode is as follows: the second valve 61 is closed, the first valve 41, the third valve 71 and the fourth valve 81 are opened, the first water pump 13 and the second water pump 23 are always in an open state, the first water pump 13 not only provides cooling water for the compressor, but also pumps the cooling water into the second evaporator 22 to be used as a water source of the second water pump 23, and the first refrigeration compressor 11 and the second refrigeration compressor 21 are started and stopped according to the water temperature condition.

Therefore, an operator of the hydrogenation station can select a working mode according to the actual condition of the hydrogenation station, and under the linkage working mode, because the cooling water for heat exchange of the hydrogenation machine is precooled by the cold energy of the compressor part in the standby state, when the water chilling unit 2 of the hydrogenation machine is connected to a hydrogenation task instruction, the water temperature is lower than the normal temperature, the water chilling unit is in a better starting state, the hydrogenation preparation time is shortened, and the hydrogenation task with uneven hydrogenation time is more competent.

The above is not relevant and is applicable to the prior art.

While certain specific embodiments of the present invention have been described in detail by way of illustration, it will be understood by those skilled in the art that the foregoing is illustrative only and is not limiting of the scope of the invention, as various modifications or additions may be made to the specific embodiments described and substituted in a similar manner by those skilled in the art without departing from the scope of the invention as defined in the appending claims. It should be understood by those skilled in the art that any modifications, equivalents, improvements and the like made to the above embodiments in accordance with the technical spirit of the present invention are included in the scope of the present invention.