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CN-122015002-A - Multiple metering and thermal management mode group string type solid hydrogen storage and charging system and method

CN122015002ACN 122015002 ACN122015002 ACN 122015002ACN-122015002-A

Abstract

The invention discloses a serial solid hydrogen storage and charging system and a method in multiple metering and thermal management modes, wherein an electric heater and a heat exchange medium flow channel are arranged in an interlayer of a reaction kettle; the hydrogen charging system comprises a hydrogen charging part, a heat exchange medium temperature control part and an electronic scale, wherein the hydrogen charging part comprises a hydrogen charging main pipeline, a hydrogen source valve, a hydrogen charging flowmeter, a free hydrogen discharge selection valve I and a temperature transmitter in front of a reaction kettle are arranged on the hydrogen charging main pipeline, the heat exchange medium temperature control part comprises independent first, second and third medium input branch pipelines, the outlet end of a medium discharge main pipeline is connected with two medium discharge branch pipelines in parallel, the outlet of the first medium discharge branch pipeline is communicated with the atmosphere, and the second medium discharge branch pipeline is provided with an air cooling outlet selection valve II and an air cooling heat exchanger. The invention has the advantages of realizing multiple heat management modes and multiple metering modes, being more flexible to use, and being capable of realizing selective serial control on a plurality of parallel reaction kettles, so that the reaction kettles are charged with hydrogen independently or simultaneously, and being suitable for application scenes.

Inventors

  • LANG FUSHUANG
  • Guo Kunsen
  • LI LU

Assignees

  • 安徽吉镁氢能科技有限公司

Dates

Publication Date
20260512
Application Date
20260413

Claims (10)

  1. 1. The serial solid hydrogen storage and charging system with multiple metering and thermal management modes is characterized in that an electric heater and a heat exchange medium flow channel are arranged in an interlayer of a reaction kettle (15), and a hydrogen charging interface of the reaction kettle (15) is externally connected with a hydrogen selection valve (56); The hydrogen charging part comprises a hydrogen charging main pipeline, a hydrogen selection valve (56) connected to the reaction kettle (15) at the outlet end of the hydrogen charging main pipeline is used for charging hydrogen into a solid hydrogen storage tank arranged in the reaction kettle (15), the heat exchange medium temperature control part comprises a plurality of mutually independent medium input branch pipelines, the heat exchange medium temperature control part is used for introducing heat exchange medium into a heat exchange medium runner of the reaction kettle (15) to control the temperature of the inner cavity of the reaction kettle (15), and the electronic scale (55) is used for weighing the solid hydrogen storage tanks before and after hydrogen charging.
  2. 2. The multi-metering and thermal management mode group string type solid hydrogen storage and charging system as claimed in claim 1, wherein a heat exchange medium inlet, a heat exchange medium outlet, a reaction kettle pressure transmitter interface and a reaction kettle temperature transmitter interface are arranged on the reaction kettle (15), and the heat exchange medium inlet and the heat exchange medium outlet are respectively communicated with two ends of a heat exchange medium flow passage; In the hydrogen charging part, the inlet end of a hydrogen charging main pipeline is connected with a hydrogen source, and the hydrogen charging main pipeline is sequentially provided with a hydrogen source valve (1), a hydrogen charging flowmeter (6), a free hydrogen release selection valve I (13) and a temperature transmitter (14) in front of the reaction kettle along the air flow direction; The heat exchange medium temperature control part comprises three mutually independent medium input branch pipelines, namely a first medium input branch pipeline, a second medium input branch pipeline and a third medium input branch pipeline, wherein the inlet of the first medium input branch pipeline is connected with a compressed air source and is provided with an air cooling inlet pressure regulating filter (42), the inlet of the second medium input branch pipeline is connected with a high-temperature steam source and is sequentially provided with a steam inlet pressure reducing valve (47), a drying tank (48) and a steam heating selection valve (49) along the medium flow direction, and the inlet of the third medium input branch pipeline is connected with compressed air and is sequentially provided with an air heating inlet pressure regulating filter (50), a steam heating heat exchanger (51) and an air heating selection valve (52) along the medium flow direction; The heat exchange medium inlet and outlet of the reaction kettle (15) are respectively connected with a medium input main pipeline and a medium discharge main pipeline, the outlet of a first medium input branch pipeline is connected to the medium input main pipeline inlet of the reaction kettle (15) through a first medium input control pipeline, an air cooling inlet regulating valve (43) is arranged on the first medium input control pipeline, the outlets of a second medium input branch pipeline and a third medium input branch pipeline are connected in parallel and then connected to the medium input main pipeline inlet of the reaction kettle (15) through a second medium input control pipeline, a gas heating regulating valve (53) is arranged on the second medium input control pipeline, two medium discharge branch pipelines are connected in parallel at the outlet end of the medium discharge main pipeline, the outlet of the first medium discharge branch pipeline is communicated with the atmosphere and is provided with an air cooling outlet selecting valve I (44), and the second medium discharge branch pipeline is sequentially provided with an air cooling outlet selecting valve II (45) and an air cooling heat exchanger (46) along the medium flow direction.
  3. 3. The multi-metering and thermal-management-mode series solid-state hydrogen storage and charging system according to claim 2, wherein in the charging part, a main charging pipeline passes through the inside of the radiating water tank (34) at a section positioned at the upstream of the first free hydrogen release selection valve (13), a first intersection point is arranged at a position between the first free hydrogen release selection valve (13) and the temperature transmitter (14) in front of the reaction kettle, a second intersection point is arranged at a position positioned at the upstream of the radiating water tank (34), a section of pipeline positioned between the first intersection point and the second intersection point is a first radiating pipeline, a second radiating pipeline and a third radiating pipeline are connected in parallel to the first radiating pipeline, a free hydrogen release heat exchanger (30) and an air cooling structure are respectively arranged on the second radiating pipeline and the third radiating pipeline, and a free hydrogen release selection valve (29) and a free hydrogen release selection valve (31) are respectively arranged at positions close to the first intersection points on the second radiating pipeline and the third radiating pipeline.
  4. 4. The multi-metering and thermal-management-mode series-connection type solid-state hydrogen storage and charging system according to claim 3, wherein the charging main pipeline is provided with a charging valve (7) at a position positioned at the downstream of the charging flowmeter (6), a pipeline section formed by connecting the charging flowmeter (6) and the charging valve (7) in series is a first pipeline section, a free hydrogen discharging pipeline is connected in parallel on the first pipeline section, and a free hydrogen discharging valve (16) is arranged on the free hydrogen discharging pipeline.
  5. 5. The multi-metering and thermal-management-mode serial solid hydrogen storage charging system of claim 4, wherein a circulating water pipeline is arranged on the radiating water tank (34), water in the radiating water tank (34) is pumped into the circulating water pipeline through a circulating water pump (35) and flows into the radiating water tank (34) through an outlet of the circulating water pipeline, a circulating water flowmeter (36) is arranged on the circulating water pipeline, two liquid level switches with different heights are arranged on the radiating water tank (34), and a radiating water tank temperature transmitter (40) for detecting water temperature is further arranged on the radiating water tank (34).
  6. 6. The multi-metering and thermal management mode solid state hydrogen storage charging system according to claim 4, wherein said air-cooled heat dissipating structure comprises a heat dissipating fin tube (32) fitted over the third heat dissipating tube, and a plurality of heat dissipating fans (33) disposed on one side of the heat dissipating fin tube (32).
  7. 7. The multi-metering and thermal management mode series solid-state hydrogen storage charging system according to claim 4, wherein the charging system further comprises a safety protection part, the safety protection part comprises a charging system safety valve (12), the charging system safety valve (12) is arranged on a charging main pipeline and is positioned at the upstream of a second intersection point and at the downstream of a first pipeline section, the charging system safety valve (12) is externally connected with a discharging pipeline, a pressure release bypass pipeline is arranged between the discharging pipeline and the charging main pipeline in a crossing way, one end of the pressure release bypass pipeline is connected to the charging main pipeline and is positioned between the charging valve (7) and the charging flowmeter (6), and an automatic pressure release valve (17), a pressure release valve rear stop valve (18) and a pressure release valve rear one-way valve (19) are sequentially arranged on the pressure release bypass pipeline along the air flow direction; The hydrogen filling main pipeline is provided with a hydrogen source one-way valve (2), a hydrogen source pressure transmitter (3), a hydrogen source temperature transmitter (4) and a hydrogen filling flow regulating valve (5) at the position between the hydrogen source valve (1) and the first pipe section, and a hydrogen filling system temperature transmitter (8), a hydrogen filling system pressure transmitter (9), a hydrogen filling system pressure switch (10) and a hydrogen filling system pressure gauge (11) at the position between the first pipe section and a hydrogen filling system safety valve (12).
  8. 8. The multi-metering and thermal-management-mode serial solid-state hydrogen storage and charging system according to claim 7, wherein a vacuumizing pipeline is connected to a part, located between the first pipe section and a temperature transmitter (8) of the hydrogen charging system, of the main charging pipeline, the tail end of the vacuumizing pipeline is connected with a vacuum pump (26), and the vacuumizing pipeline is sequentially provided with a vacuumizing filter (23), a vacuumizing valve (24) and a vacuum gauge (25) along the vacuumizing direction; The main hydrogen filling pipeline is connected with a purging pipeline at a position between the hydrogen source one-way valve (2) and the hydrogen source pressure transmitter (3), the tail end of the purging pipeline is connected with a nitrogen source, and the purging pipeline is sequentially provided with a nitrogen purging valve (28) and a nitrogen purging one-way valve (27) along the air flow direction.
  9. 9. The multi-metering and thermal-management-mode series-type solid-state hydrogen storage charging system according to any one of claims 2 to 8, wherein the charging system is used for charging hydrogen in solid-state hydrogen storage tanks (54) arranged in at least two reaction kettles (15), hydrogen selection valves (56) of the reaction kettles (15) are connected in parallel to an outlet end of a charging main pipeline, a first medium input control pipeline inlet connected with each reaction kettles (15) is connected in parallel to a first medium input branch pipeline outlet, and a second medium input control pipeline inlet connected with each reaction kettles (15) is connected in parallel to an outlet parallel intersection point of a second medium input branch pipeline and a third medium input branch pipeline.
  10. 10. A serial solid hydrogen storage charging method with multiple metering and thermal management modes is characterized in that the charging method is based on the charging system of any one of claims 7-8, and the charging method is carried out according to the following steps: firstly, weighing a solid hydrogen storage tank (54) before hydrogen filling through an electronic scale (55), and then placing the solid hydrogen storage tank (54) into an inner cavity of a reaction kettle (15); step two, vacuumizing the inner cavity of the reaction kettle (15) to enable the vacuum degree of the inner cavity of the reaction kettle (15) to reach a set vacuum degree; Starting an electric heater and/or a heat exchange medium temperature control part to heat the inner cavity of the reaction kettle (15) so as to heat a hydrogen storage material filled in a solid hydrogen storage tank (54) in the inner cavity of the reaction kettle (15), and simultaneously opening a hydrogen source valve (1) or opening the hydrogen source valve (1) after the hydrogen storage material is heated to a set hydrogen absorption temperature, and filling gaseous hydrogen into the inner cavity of the reaction kettle (15) through a main hydrogen filling pipeline so as to enable the hydrogen storage material to absorb the gaseous hydrogen filled in the reaction kettle (15); When the instantaneous flow collected by the hydrogen charging flowmeter (6) is 0, closing the hydrogen charging flow regulating valve (5) and the hydrogen charging valve (7) at the moment, opening the free hydrogen discharging valve (16) and the automatic pressure release valve (17), reversely flowing free hydrogen in the reaction kettle (15) and the pipeline through the hydrogen charging main pipeline, cooling through any one of the three heat dissipation pipelines, flowing the free hydrogen into the free hydrogen discharging pipeline, and discharging the free hydrogen through the pressure release bypass pipeline after the hydrogen charging flowmeter (6); Vacuumizing the inner cavity of the reaction kettle (15), and discharging the undischarged gaseous hydrogen in the inner cavity of the reaction kettle (15) to complete the hydrogen filling operation; Taking out the solid hydrogen storage tank (54) after hydrogen filling in the inner cavity of the reaction kettle (15), weighing the solid hydrogen storage tank by the electronic scale (55), and subtracting the weight of the solid hydrogen storage tank (54) after hydrogen filling from the weight of the solid hydrogen storage tank before hydrogen filling to obtain a second hydrogen filling amount.

Description

Multiple metering and thermal management mode group string type solid hydrogen storage and charging system and method Technical Field The invention relates to the technical field of hydrogen storage reaction kettle hydrogen filling and discharging systems, in particular to a serial solid hydrogen storage and filling system and method with multiple metering and thermal management modes. Background In the existing hydrogen charging system of the solid-state hydrogen storage tank, a single heating structure mode is adopted for a temperature control part for heating the reaction kettle, for example, electric heating or heat conducting oil heating is adopted independently, an additional heat source system is needed, waste heat of field equipment cannot be utilized, and energy consumption is high. Meanwhile, after the hydrogen filling is completed, the free hydrogen in the reaction kettle and the pipeline is required to be cooled and then discharged, in the prior art, a single cooling structure mode is generally adopted, most of the free hydrogen is cooled by a heat exchanger, the heat exchanger is required to be matched with a cooling circulation system, the energy consumption is high, the cooling structure mode is suitable for being used when the temperature of discharging the free hydrogen after the hydrogen filling is finished is high, and if the temperature of discharging the free hydrogen after the hydrogen filling is finished is low, the heat exchanger is not used for cooling economically, so that waste is caused. In the existing hydrogen charging system, the solid hydrogen absorption amount is generally measured by only adopting a flowmeter on a pipeline, if the flowmeter fails, the system needs to stop working and continue to operate after processing, when the accuracy of the flowmeter is obviously abnormal, the system cannot be self-verified, and free hydrogen discharged after the hydrogen charging is finished is directly discharged without being measured, so that the accuracy of the real solid hydrogen absorption amount is difficult to ensure. In addition, in the prior art, if a plurality of reaction kettles are charged simultaneously, the control of whether the plurality of reaction kettles are charged or not and the control of the temperature control part are all overall control, so that whether each reaction kettle is charged or not and the independent control of the temperature of each reaction kettle cannot be realized, and the quantity of the reaction kettles which work cannot be adjusted according to the actual charging requirement. Disclosure of Invention The invention aims to overcome the defects of the prior art, and provides a serial solid hydrogen storage and charging system and method with multiple metering and thermal management modes, so as to realize the multiple thermal management modes and the multiple metering modes, more flexibly use, simultaneously charge the solid hydrogen storage tanks in a plurality of parallel reaction kettles and improve the hydrogen charging efficiency. The invention is realized by the following technical scheme: The serial solid hydrogen storage and charging system with multiple metering and thermal management modes is characterized in that an electric heater and a heat exchange medium flow passage are arranged in an interlayer of a reaction kettle, and a hydrogen charging interface of the reaction kettle is externally connected with a hydrogen selection valve; the hydrogen charging system comprises a hydrogen charging part, a heat exchange medium temperature control part and an electronic scale; The hydrogen charging part comprises a hydrogen charging main pipeline, the outlet end of the hydrogen charging main pipeline is connected to a hydrogen selection valve of the reaction kettle and is used for charging hydrogen into a solid hydrogen storage tank arranged in the reaction kettle, the heat exchange medium temperature control part comprises a plurality of mutually independent medium input branch pipelines and is used for introducing heat exchange medium into a heat exchange medium runner of the reaction kettle to control the temperature of an inner cavity of the reaction kettle, and the electronic scale is used for weighing the solid hydrogen storage tanks before and after hydrogen charging. As the preferable scheme of the hydrogen charging system, a heat exchange medium inlet, a heat exchange medium outlet, a reaction kettle pressure transmitter interface and a reaction kettle temperature transmitter interface are arranged on the reaction kettle, and the heat exchange medium inlet and the heat exchange medium outlet are respectively communicated with two ends of a heat exchange medium flow channel; In the hydrogen charging part, the inlet end of a hydrogen charging main pipeline is connected with a hydrogen source, and the hydrogen charging main pipeline is sequentially provided with a hydrogen source valve, a hydrogen charging flowmeter, a free hydrogen