Salt cavern sediment gap energy storage simulation experiment device

Abstract

The utility model relates to a salt cavern sediment gap energy storage simulation experiment device, and belongs to the technical field of salt cavern sediment gap energy storage experiment equipment. The salt cavern sediment gap energy storage simulation experiment device comprises two groups of normal pressure experiment containers, a pressure-resistant experiment container, a gas storage bottle, a water storage tank and a gas-liquid separator, the two groups of normal-pressure experiment containers are connected with each other through a communicating short circuit; the gas storage bottle is connected with a gas-liquid separator through a flow controller A and a gas injection valve A; one end of the gas-liquid separator is connected with the upper ends of the normal-pressure experiment container and the pressure-resistant experiment container through switch valves which are connected in parallel; and the outlet ends of the communicating pup joint and the pressure-resistant experiment container are respectively connected with a liquid phase pipeline through a control valve. The simulation experiment device is compact in structure and ingenious in design, solves the problems that in an existing salt cavern energy storage simulation experiment, an experiment under pressure cannot be carried out, and the experiment function is single, and is particularly suitable for being used in a salt cavern sediment gap energy storage simulation experiment.

Description

Technical Field

[0001] The utility model relates to a salt cavern sediment void energy storage simulation experimental device, belonging to the technical field of salt cavern sediment void energy storage experimental equipment. Background Art

[0002] In the field of salt cavern energy storage technology, due to the complexity of the sediment in the salt cavern, it is necessary to use an experimental device to conduct brine injection and exhaust experiments and gas injection and exhaust experiments on the sediment when demonstrating the feasibility of salt cavern energy storage. The existing experimental device, such as a brine compensation salt cavern gas storage dynamic simulation experimental device disclosed in the utility model patent with authorization announcement number CN216894373U, can meet the needs of enterprise production and use to a certain extent, but it has the following problems:

[0003] First, the simulation container in the existing simulation experiment device is a normal pressure container, which has the problem of being unable to conduct pressure experiments.

[0004] Second: the simulation experimental device can only complete the brine injection and exhaust experiment, but cannot complete the gas injection and brine exhaust experiment, and there is a problem of single experimental function.

[0005] Therefore, it is necessary to develop a new simulation experimental device to solve the above problems existing in the existing experimental methods. Summary of the invention

[0006] The utility model aims to provide a salt cavern sediment void energy storage simulation experiment device with a compact structure and ingenious design to solve the problems of the existing salt cavern energy storage simulation experiments that the pressure test cannot be carried out and the experimental function is single.

[0007] The technical solution of the utility model is:

[0008] A salt cavern sediment void energy storage simulation experiment device comprises two groups of normal pressure experiment containers, a pressure test container, a gas storage bottle, a water storage tank and a gas-liquid separator; the characteristics are as follows: the two groups of normal pressure experiment containers are connected to each other through a connecting short circuit; the gas storage bottle is connected to the gas-liquid separator through a flow controller A and an injection valve A; one end of the gas-liquid separator is connected to the upper ends of the normal pressure experiment container and the pressure test container through a switch valve connected in parallel; the outlet ends of the connecting short circuit and the pressure test container 21 are respectively connected to liquid phase pipelines through control valves; one end of the liquid phase pipeline is connected to the water storage tank through a drain valve, a turbidity meter and a flow meter.

[0009] The two ends of the flow controller and the gas injection valve A are connected in parallel with a pressure reducing valve and a gas injection valve B.

[0010] One end of the liquid phase pipeline is connected to a liquid injection pipeline; the liquid injection pipeline is sequentially connected to a liquid injection valve, a flow meter and a plunger pump, and then connected to a water storage tank.

[0011] The pipeline on one side of the gas-liquid separator is connected with an exhaust valve and a flow controller B through one side of the exhaust pipeline.

[0012] The normal pressure test container and the pressure resistance test container are both equipped with pore pressure sensors.

[0013] The advantages of the utility model are:

[0014] The salt cavern sediment void energy storage simulation experiment device has a compact structure and ingenious design. It can complete both brine injection and gas exhaust experiments and gas injection and brine exhaust experiments, and can complete both normal pressure experiments and high pressure experiments. It solves the problems of existing salt cavern energy storage simulation experiments that cannot carry out pressure experiments and have single experimental functions, and is particularly suitable for use in salt cavern sediment void energy storage simulation experiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the utility model.

[0016] In the figure: 1. Normal pressure test container; 2. Connecting short circuit; 3. Flow controller A; 4. Gas injection valve A; 5. Gas-liquid separator; 6. Switch valve; 7. Control valve; 8. Liquid phase pipeline; 9. Drain valve; 10. Turbidimeter; 11. Flow meter; 12. Water storage tank; 13. Pressure reducing valve; 14. Gas injection valve B; 15. Liquid injection pipeline; 16. Liquid injection valve; 17. Flow controller B; 18. Plunger pump; 19. Exhaust pipeline; 20. Exhaust valve; 21. Pressure test container; 22. Gas storage cylinder. DETAILED DESCRIPTION

[0017] The salt cavern sediment void energy storage simulation experimental device comprises two sets of normal pressure experimental containers 1, a pressure-resistant experimental container 21, a gas storage bottle 22, a water storage tank 12 and a gas-liquid separator 5 (see the attached manual). Figure 1 ).

[0018] The two groups of normal pressure test containers 1 are connected to each other through a connecting short circuit 2; a pressure test container 21 (see the attached manual) is provided on one side of the two groups of normal pressure test containers 1. Figure 1 During operation, the salt cave sediment can be placed in the normal pressure test container 1 and the pressure test container 21 as required.

[0019] A pore pressure sensor (not shown in the drawings of the specification) is installed on both the normal pressure test container 1 and the pressure test container 21. During operation, the pressure in the normal pressure test container 1 and the pressure test container 21 can be monitored by the pore pressure sensor.

[0020] The gas storage cylinder 22 is connected to the gas-liquid separator 5 through the flow controller A3 and the gas injection valve A4; one end of the gas-liquid separator 5 is connected to the upper ends of the atmospheric pressure test container 1 and the pressure test container 21 through the switch valve 6 connected in parallel (see the attached manual). Figure 1 During operation, the gas medium in the gas storage bottle 22 enters the normal pressure test container 1 or the pressure test container 21 through the corresponding switch valve 6 at a constant flow rate through the gas-liquid separator 5 under the action of the flow controller A3 and the gas injection valve A4.

[0021] The two ends of the flow controller A3 and the gas injection valve A4 are connected in parallel with a pressure reducing valve 13 and a gas injection valve B14 (see the appendix of the manual). Figure 1 During operation, the gas medium in the gas storage bottle 22 enters the normal pressure test container 1 or the pressure test container 21 through the corresponding switch valve 6 after passing through the gas-liquid separator 5 at a constant pressure under the action of the pressure reducing valve 13 and the gas injection valve B14.

[0022] The outlet ends of the connecting short circuit 2 and the pressure test container 21 are respectively connected to a liquid phase pipeline 8 through a control valve 7; one end of the liquid phase pipeline 8 is connected to a water storage tank 12 through a drain valve 9, a turbidity meter 10 and a flow meter 11. During operation, after the gas medium is injected into the pressure test container 21 and the normal pressure test container 1, the gas medium squeezes the brine stored in the salt cave sediment of the normal pressure test container 1 and the pressure test container 21, and then returns to the water storage tank 12 through the liquid phase pipeline 8, the drain valve 9, the turbidity meter 10 and the flow meter 11.

[0023] One end of the liquid phase pipeline 8 is connected to a liquid injection pipeline 15; the liquid injection pipeline 15 is connected to a liquid injection valve 16, a flow meter 11 and a plunger pump 18 in sequence and then connected to a water storage tank 12 (see the attached manual). Figure 1 When working, the plunger pump 18 can transport the brine stored in the water storage tank 12 through the flow meter 11 and the injection valve 16 and then through the injection pipeline 15 to the salt cave sediment of the normal pressure test container 1 and the pressure test container 21.

[0024] The pipeline on one side of the gas-liquid separator 5 is connected to an exhaust valve 20 and a flow controller B17 through an exhaust pipeline 19.

[0025] When the salt cavern sediment void energy storage simulation experimental device is working, when it is necessary to conduct an experiment of gas injection and brine removal, the plunger pump 18, the injection valve 16 and the control valve 7 are first turned on. At this time, the brine stored in the water storage tank 12 will be transported to the salt cavern sediment in the normal pressure test container 1 or the pressure test container 21 through the flow meter 11, the injection valve 16 and the injection pipeline 15.

[0026] When a certain amount of brine is stored in the salt cave sediment in the normal pressure test container 1 or the pressure test container 21, the plunger pump 18 and the injection valve 16 are closed. Then the discharge valve 9 and the turbidity meter 10 are opened; then the gas medium in the gas storage bottle 22 enters the normal pressure test container 1 or the pressure test container 21 through the corresponding switch valve 6 after the gas-liquid separator 5 at a constant flow rate under the action of the flow controller A3 and the gas injection valve A4, or enters the normal pressure test container 1 or the pressure test container 21 through the corresponding switch valve 6 after the gas-liquid separator 5 at a constant pressure under the action of the pressure reducing valve 13 and the gas injection valve B14.

[0027] After the constant flow gas medium or the constant pressure gas medium enters the atmospheric pressure test container 1 or the pressure test container 21, the brine in the salt cave sediment is squeezed to return to the water storage tank 12 through the liquid phase pipeline 8, the drain valve 9, the turbidity meter 10 and the flow meter 11. In this process, the process can be monitored by the turbidity meter 10 and the flow meter 11, so that the experiment of gas injection and brine removal can be completed.

[0028] When the salt cavern sediment void energy storage simulation experimental device is used to complete the brine injection and exhaust experiment, first, the gas medium in the gas storage bottle 22 passes through the gas-liquid separator 5 at a constant flow rate under the action of the flow controller A3 and the gas injection valve A4, and then enters the normal pressure test container 1 or the pressure test container 21 through the corresponding switch valve 6, or passes through the gas-liquid separator 5 at a constant pressure under the action of the pressure reducing valve 13 and the gas injection valve B14, and then enters the normal pressure test container 1 or the pressure test container 21 through the corresponding switch valve 6, so that a certain amount of gas medium is stored in the salt cavern sediment.

[0029] After the above work is completed, close the gas injection valve A4 and the gas injection valve B14, open the exhaust valve 20, and then start the plunger pump 18, the liquid injection valve 16 and the control valve 7. At this time, the brine stored in the water storage tank 12 will be transported to the salt cave sediment of the normal pressure test container 1 or the pressure test container 21 through the flow meter 11, the liquid injection valve 16 and the liquid injection pipeline 15. After the brine enters the normal pressure test container 1 or the pressure test container 21, it will squeeze the gas medium inside it, so that it will eventually be discharged through the gas-liquid separator 5 and the exhaust valve 20; in this process, the flow meter 11 can detect the discharged gas, and the simulation experimental device can complete the brine injection and exhaust experiment.

[0030] The salt cavern sediment void energy storage simulation experiment device has a compact structure and ingenious design. It can complete both brine injection and gas exhaust experiments and gas injection and brine exhaust experiments, and can complete both normal pressure experiments and high pressure experiments. It solves the problems of existing salt cavern energy storage simulation experiments that cannot carry out pressure experiments and have single experimental functions, and is particularly suitable for use in salt cavern sediment void energy storage simulation experiments.

Claims

1. A salt cavern sediment void energy storage simulation experimental device, comprising two sets of normal pressure experimental containers (1), a pressure-resistant experimental container (21), a gas storage bottle (22), a water storage tank (12), and a gas-liquid separator (5); Features: The two groups of normal pressure test containers (1) are connected to each other via a connecting short circuit (2); the gas storage cylinder (22) is connected to a gas-liquid separator (5) via a flow controller A (3) and a gas injection valve A (4); one end of the gas-liquid separator (5) is connected to the upper ends of the normal pressure test container (1) and the pressure test container (21) via a switch valve (6) connected in parallel; the outlet ends of the connecting short circuit (2) and the pressure test container (21) are respectively connected to a liquid phase pipeline (8) via a control valve (7); one end of the liquid phase pipeline (8) is connected to a water storage tank (12) via a drain valve (9), a turbidity meter (10) and a flow meter (11).

2. A salt cavern sediment void energy storage simulation experimental device according to claim 1, Features: The two ends of the flow controller A (3) and the gas injection valve A (4) are connected in parallel with a pressure reducing valve (13) and a gas injection valve B (14).

3. A salt cavern sediment void energy storage simulation experimental device according to claim 1, Features: One end of the liquid phase pipeline (8) is connected to a liquid injection pipeline (15); the liquid injection pipeline (15) is sequentially connected to a liquid injection valve (16), a flow meter (11) and a plunger pump (18) and then connected to a water storage tank (12).

4. A salt cavern sediment void energy storage simulation experimental device according to claim 1, Features: The pipeline on one side of the gas-liquid separator (5) is connected to an exhaust valve (20) and a flow controller B (17) via an exhaust pipeline (19).

5. The salt cavern sediment void energy storage simulation experimental device according to claim 1, Features: The atmospheric pressure test container (1) and the pressure-resistant test container (21) are both equipped with pore pressure sensors.

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