CN-224214291-U - Power adjusting device system for hydraulic compressed air energy storage

CN224214291UCN 224214291 UCN224214291 UCN 224214291UCN-224214291-U

Abstract

The utility model provides a hydraulic compressed air energy storage power regulating device system, which comprises an air storage container and a water storage container, wherein a pipeline of an air compression device is connected with the air storage container, the air storage container is respectively communicated with an energy storage and gas transmission pipe network through a gas expansion pipe network, the water storage container is connected with the water storage tank through an energy storage and water injection pipe network, a regulating pump assembly is arranged on the energy storage and water injection pipe network, the inlet end of a hydraulic power generating device is connected with the water storage container through an energy release and water transmission pipe network, the outlet end of the hydraulic power generating device is connected with the water storage tank, and a variable-frequency rectifying device is electrically connected with the hydraulic power generating device. The utility model realizes the control of the water outlet pressure and flow of the water storage container by utilizing the pressure adjustment of the compressed air, combines the hydraulic power generation device, adjusts the water inlet quantity, realizes the stable adjustment of the rotating speed, the output power and the like of the hydraulic equipment, is connected into the variable-frequency rectifying device, adjusts the current of the output power supply, maintains the stable power and improves the quality of the power supply.

Inventors

HE XIN
LI XUGUANG
FANG JIANZHONG
ZHAO JUAN
JIA GUANGCAI

Assignees

其兴(北京)科技创新有限公司

Dates

Publication Date: 20260508
Application Date: 20250523

Claims (10)

1. The power regulating device system for hydraulic compressed air energy storage is characterized by comprising an air compression device, a water flow regulating device, a hydraulic power generation device, a variable frequency rectifying device and a water storage tank; The water flow regulating device comprises a gas storage container and a water storage container, the air compression device is connected with the gas storage container through a pipeline, the gas storage container is communicated with an energy storage gas transmission pipe network through a gas expansion pipe network, the water storage container is connected with the water storage tank through an energy storage water injection pipe network, and an adjusting pump assembly is arranged on the energy storage water injection pipe network; The inlet end of the hydroelectric power generation device is connected with the water storage container through an energy discharging water delivery pipe network, the outlet end of the hydroelectric power generation device is connected with the water storage tank, and the variable-frequency rectifying device is electrically connected with the hydroelectric power generation device.
2. The hydraulic compressed air energy storage power regulating device system according to claim 1, wherein a first spraying assembly and a second spraying assembly are respectively arranged in the air storage container and the water storage container, the first spraying assembly is communicated with the second spraying assembly through a temperature supplementing spraying pipe network, the temperature supplementing spraying pipe network is communicated with the water storage container through a circulating branch pipe, a circulating pump is arranged on the circulating branch pipe, and the second spraying assembly is further connected with the water storage tank through an energy storage water injection pipe network.
3. The hydraulic compressed air energy storage power conditioning device system according to claim 2, wherein the air storage container comprises at least one high-pressure air tank, a first heat exchange assembly is arranged on the peripheral wall of the high-pressure air tank, and the first spraying assembly is arranged on the top of an inner cavity of the high-pressure air tank; The water storage container comprises a plurality of closed water tanks which are arranged in parallel, a second heat exchange assembly is arranged on the peripheral wall of each closed water tank, and the second spraying assembly is arranged at the top of an inner cavity of each closed water tank.
4. The hydraulic compressed air energy storage power regulating device system according to claim 3, wherein two ends of the gas expansion pipe network are respectively communicated with the top of the high-pressure gas tank and the top of the closed water tank, and a throttling device is arranged on one side, close to the high-pressure gas tank, of the gas expansion pipe network.
5. The hydraulic compressed air energy storage power regulating device system according to claim 3, wherein an inlet end and an outlet end of the energy storage and gas transmission pipe network are respectively connected with the bottom of the high-pressure gas tank and the bottom of the closed water tank.
6. The hydraulic compressed air energy storage power regulating apparatus system according to claim 5, wherein a connecting branch pipe is arranged at the bottom of the closed water tank, and one end of the connecting branch pipe, which is far away from the closed water tank, is communicated with the outlet end of the energy storage gas transmission pipe network.
7. The hydraulic compressed air energy storage power conditioning system according to claim 2, wherein the second spray assembly is provided with a mixing manifold, the mixing manifold being connected to the outlet end of the energy storage water injection network.
8. The hydrodynamically-compressed air-powered power-conditioning-unit system of claim 1, wherein the air-compressing unit comprises an air compressor or a high-pressure fan.
9. The hydrodynamically-compressed air-powered power-conditioning-unit system of claim 1, wherein the hydrokinetic power generator comprises a water turbine.
10. The hydrocompressed air storage power conditioning apparatus system according to claim 1, wherein the conditioning pump assembly comprises a high pressure feedwater pump.

Description

Power adjusting device system for hydraulic compressed air energy storage Technical Field The utility model belongs to the technical field of energy storage and power generation, and relates to a power adjusting device system for hydraulic compressed air energy storage. Background At present, the energy storage field mainly comprises battery pack energy storage, compressed air energy storage, hydraulic pumping and storing energy and the like, wherein the battery energy storage scale is flexible and mainly electric energy storage, compressed air stores electric energy as physical and mechanical energy, and hydraulic pumping and storing energy is gravity energy storage based on the height difference of a field. With the development of the technology, the compressed air energy storage technology is continuously innovated due to high stability and large capacity, and is widely applied to different energy storage and release fields. The prior art scheme discloses a compressed air energy storage power generation facility, wherein the motor is connected with air compressor unit, air compressor unit is connected with the cooler in proper order, the gas holder, heating device, turboexpander unit is connected with the generator, be connected through first pipeline between air compressor unit's the export and the cooler, compressed air energy storage power generation facility still includes pressure measurement device and the stop valve of setting on first pipeline, pressure measurement device sets up the exit at air compressor unit, there is the pressure boost pipeline in the parallel connection of stop valve both ends, be equipped with pressure boost baffle door and supercharging device on the pressure boost pipeline, make full use of low ebb electricity, abandon electric energy such as electricity, can compress the maximum pressure that can bear the gas holder with the air, make the better expansion acting power generation of compressed air. The technical scheme discloses an energy storage distributed utilization system based on an industrial compressed air system, which comprises an air pressurization system, wherein the air pressurization system is provided with an air storage device, the air storage device is respectively connected with a first compressed air utilization system, a second compressed air utilization system and a third compressed air utilization system, each of the first to third compressed air utilization systems comprises a heater, an expander, a cold energy heat exchanger and a compressed air storage tank, so that low-pressure gas after energy release and power generation is subjected to heat exchange by the cold energy heat exchanger, cold energy is produced and supplied to industrial users and even surrounding area buildings for cooling, peak load of an electric network is reduced, and meanwhile, the low-pressure gas with different pressure values is stored by matching with the arrangement of the three compressed air utilization systems so as to be used for the subsequent distribution of the compressed gas with different values to carry out energy release and power generation again. However, in the existing compressed air energy storage system, during the expansion process of compressed air, the expansion pressure gradually decreases along with the expansion process until the expansion pressure approaches to the atmospheric pressure, and the pressure drop causes the air entering the air turbine or the pressure drop of the flow of water of the water turbine, etc., which causes the adverse phenomena of fluctuation of the rotation speed of mechanical equipment, power drop, etc. Therefore, the compressed air energy storage system needs to be improved, the power generation efficiency is improved, and the problem of unstable power output is solved. Disclosure of utility model Aiming at the defects existing in the prior art, the utility model aims to provide a power regulating device system for hydraulic compressed air energy storage, in the utility model, the pressure of compressed air is utilized to regulate the air inlet pressure and the air inlet amount which enter a water storage container, the control of the water outlet pressure and the flow of the water storage container is realized, the output power is stable, the hydraulic power generating device is combined, the water inlet amount is regulated, the stable regulation of the rotating speed, the output power and the like of hydraulic equipment is realized, the variable frequency rectifying device is connected, the current of an output power supply is regulated, the power stability is maintained, the power quality is improved, the power output stability of the power regulating device system is realized as a whole, the change is smooth, and the system is convenient to better adapt to various power utilization scenes. To achieve the purpose, the utility model adopts the following technical scheme: The utility model provides a power regulating de