Temperature control device for gas storage reservoir and method for determining its parameters

Abstract

The present invention belongs to the technical field of temperature control for gas storage caverns, and specifically discloses a temperature control device for gas storage caverns and a method for determining its parameters. The method for determining parameters includes obtaining the temperature difference between the inlet and outlet of the heat exchange tubes in the temperature control device and determining the internal energy difference of the gas before and after gas injection into the gas storage cavern. The temperature control device is arranged in the lining layer of the gas storage cavern; determining the flow-through diameter of the heat exchange tubes according to the temperature difference and the internal energy difference of the gas; determining the minimum wall thickness of the heat exchange tubes according to the flow-through diameter of the heat exchange tubes, the allowable stress, and the maximum pressure borne by the heat exchange tubes. The present invention can take away the excess heat under the gas injection state of the gas storage cavern and supplement heat into the gas storage cavern under the gas extraction state, so as to make the temperature of the gas storage cavern relatively stable, reduce the influence of temperature load on the lining layer, improve the reliability and service life of the gas storage cavern, and at the same time ensure the efficiency of gas injection and extraction, so that the gas storage cavern can operate normally.

Description

Technical Field

[0001] The present invention discloses a temperature control device for a gas storage reservoir and a method for determining its parameters, belonging to the technical field of gas storage reservoir temperature control. Background Art

[0002] During the operation process of an underground gas storage reservoir, precise and efficient temperature control has become an essential element to ensure the safe, stable, and efficient operation of the system. In the frequent gas charging and discharging cycles of the gas storage reservoir, the gas state undergoes drastic changes. When charging the gas, due to the work done by the compressor, the pressure and the amount of substance increase suddenly. According to the laws of thermodynamics, the internal energy rises, resulting in a sharp rise in the temperature inside the reservoir. During the gas discharging stage, the gas expands and does work externally, the internal energy decreases sharply, and the temperature drops steeply accordingly. Such large fluctuations in temperature give rise to many intractable problems.

[0003] On the one hand, the drastic temperature fluctuations impose strong thermal stresses on the lining structure of the gas storage reservoir. Over time, the lining material cannot bear the heavy load, the fatigue damage intensifies, cracks initiate and expand, seriously endangering the structural integrity and sealing performance of the gas storage reservoir. Once the lining fails, it will not only cause gas leakage, reduce the energy storage efficiency, but also may trigger geological safety hazards and threaten the surrounding environment.

[0004] On the other hand, the unstable temperature conditions interfere with the physical properties of compressed air, such as density, viscosity, etc. This poses obstacles to gas compression, storage, and subsequent efficient release and utilization, reduces the overall performance of the energy storage system, and increases energy consumption and operation and maintenance costs.

[0005] The existing technology usually reduces the negative impact of large temperature fluctuations on the gas storage reservoir by adjusting the operating conditions, which has problems of affecting the gas storage efficiency and the normal operation of the gas storage reservoir. Summary of the Invention

[0006] The purpose of the present invention is to provide a temperature control device for a gas storage reservoir and a method for determining its parameters, so as to solve the technical problems of affecting the gas storage efficiency and the normal operation of the gas storage reservoir existing in the prior art when realizing the temperature control of the gas storage reservoir by adjusting the operating conditions.

[0007] The first aspect of the present invention provides a method for determining the parameters of a temperature control device for a gas storage reservoir, including: obtaining the temperature difference between the inlet and outlet of the heat exchange tube in the temperature control device and determining the internal energy difference of the gas before and after charging the gas storage reservoir, wherein the temperature control device is arranged in the lining layer of the gas storage reservoir; determining the flow-through diameter of the heat exchange tube according to the temperature difference and the internal energy difference of the gas; determining the minimum wall thickness of the heat exchange tube according to the flow-through diameter of the heat exchange tube, the allowable stress, and the maximum pressure borne by the heat exchange tube.

[0008] Preferably, determining the difference in gas internal energy before and after gas injection into the gas storage reservoir specifically includes: determining an injection correction coefficient according to the gas injection parameters of the gas storage reservoir; determining the difference in gas internal energy before and after gas injection into the gas storage reservoir according to the injection correction coefficient and the temperatures before and after gas injection into the gas storage reservoir.

[0009] Preferably, the gas injection parameters include at least one of gas injection speed, gas injection pressure, gas injection time, and specific heat capacity at constant volume.

[0010] Preferably, determining the difference in gas internal energy before and after gas injection into the gas storage reservoir according to the injection correction coefficient and the temperatures before and after gas injection into the gas storage reservoir specifically includes: determining the gas internal energy before gas injection into the gas storage reservoir according to the product of the temperature before gas injection into the gas storage reservoir and the injection correction coefficient; determining the gas internal energy after gas injection into the gas storage reservoir according to the product of the temperature after gas injection into the gas storage reservoir and the injection correction coefficient; determining the difference between the gas internal energy after gas injection into the gas storage reservoir and the gas internal energy before gas injection into the gas storage reservoir to obtain the difference in gas internal energy.

[0011] Preferably, determining the flow-through diameter of the heat exchange tube according to the temperature difference and the difference in gas internal energy specifically includes: determining the volume flow rate of the heat exchange tube according to the temperature difference and the difference in gas internal energy; determining the flow-through diameter according to the volume flow rate and the flow velocity of the heat exchange medium inside the heat exchange tube.

[0012] Preferably, determining the volume flow rate of the heat exchange tube according to the temperature difference and the difference in gas internal energy specifically includes: determining the mass flow rate of the heat exchange tube according to the temperature difference and the difference in gas internal energy; determining the volume flow rate of the heat exchange tube according to the mass flow rate and the density of the heat exchange medium.

[0013] Preferably, determining the minimum wall thickness of the heat exchange tube according to the flow-through diameter of the heat exchange tube, the allowable stress, and the maximum pressure borne by the heat exchange tube specifically includes: determining the product of the flow-through diameter of the heat exchange tube and the maximum pressure borne by the heat exchange tube; determining the minimum wall thickness of the heat exchange tube according to the quotient of the product and the allowable stress.

[0014] The second aspect of the present invention provides a temperature control device for a gas storage reservoir, the parameters of which are determined by using the parameter determination method of the above-mentioned temperature control device for a gas storage reservoir, wherein the heat exchange tube includes a heat exchange inlet tube and a heat exchange outlet tube; the heat exchange inlet tube is of a spiral structure, which is wound around the lining layer of the gas storage reservoir along the axial direction of the gas storage reservoir, and the inlet of the heat exchange inlet tube extends out of the lining layer; the heat exchange outlet tube is embedded in the lining layer, one end of which is communicated with the outlet of the heat exchange inlet tube, and the other end extends out of the lining layer.

[0015] Preferably, the ratio of the thickness of the lining layer to the distance between the heat exchange inlet tube and the inner surface of the lining layer is 1:0.3 to 0.4.

[0016] Preferably, the pitch of the spiral structure is 1 m to 2 m and greater than or equal to a preset multiple of the thickness of the lining layer.

[0017] The temperature control device for gas storage cavern and its parameter determination method of the present invention have the following beneficial effects compared with the prior art:

[0018] The present invention can take away the excess heat when the gas storage cavern is in the gas filling state, and supplement heat into the gas storage cavern when the gas storage cavern is in the gas discharging state, so as to make the temperature of the gas storage cavern relatively stable, reduce the influence of temperature load on the lining layer, improve the reliability and service life of the gas storage cavern, and at the same time ensure the efficiency of gas filling and discharging, so that the gas storage cavern can operate normally. Description of the Drawings

[0019] Figure 1 It is a flowchart of the parameter determination method of the temperature control device for gas storage cavern in the embodiment of the present invention.

[0020] Figure 2 It is a schematic structural diagram of the gas storage cavern in the embodiment of the present invention.

[0021] In the figure: 1 is the heat exchange inlet pipe; 2 is the lining layer; 3 is the sealing layer; 4 is the sealing door; 5 is the plug; 6 is the heat exchange outlet pipe; 7 is the inlet valve; 8 is the outlet valve; 9 is the inlet thermometer; 10 is the outlet thermometer. Detailed Embodiments

[0022] In the following description, specific details such as specific system structures and technologies are presented for the purpose of illustration rather than limitation, so as to thoroughly understand the embodiments of the present invention. However, those skilled in the art should clearly understand that the present invention can also be implemented in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, devices, circuits, and methods are omitted to avoid unnecessary details from interfering with the description of the present invention.

[0023] The first aspect of the embodiment of the present invention provides a parameter determination method for a temperature control device for a gas storage cavern, as Figure 1 shown, including:

[0024] Step 1, obtain the temperature difference between the inlet and outlet of the heat exchange pipe in the temperature control device and determine the gas internal energy difference before and after gas filling in the gas storage cavern, where the temperature control device is arranged in the lining layer of the gas storage cavern, specifically including:

[0025] Step 1.1, determine the gas internal energy difference before and after gas filling in the gas storage cavern, specifically including:

[0026] Step 1.1.1, determine the gas filling correction coefficient according to the gas filling parameters of the gas storage cavern.

[0027] Considering that the inflation correction coefficient is related to factors such as inflation speed, inflation equipment, gas properties, operating conditions, etc., in the embodiments of the present invention, the defined inflation parameters include at least one of inflation speed, inflation pressure, specific heat capacity at constant volume, and inflation time that can reflect the above factors.

[0028] Exemplarily, taking the inflation parameters including inflation speed, inflation pressure, specific heat capacity at constant volume, and inflation time as an example, the method for determining the inflation correction coefficient is described.

[0029] The inflation correction coefficient of the embodiments of the present invention is determined according to the following first formula.

[0030] (1)

[0031] In the formula is the inflation speed, is the maximum inflation speed that may be achieved under the conditions of the inflation equipment and the gas storage reservoir, represents the relative magnitude of the inflation speed; is the inflation pressure, is the initial pressure of the gas storage reservoir, is the maximum pressure that the inflation equipment can reach, reflects the degree of pressure action of the inflation equipment; is the specific heat capacity at constant volume, is the average value of the specific heat capacity at constant volume of common gases, where the common gases can be air, carbon dioxide, reflects the influence of the specific heat capacity characteristics of a specific gas on inflation; is the inflation design time, is the longest possible time for a single inflation operation, represents the relative length of the inflation time; are the weight coefficients of each factor, is a constant term, considering the complexity of the gas storage reservoir structure. The weight coefficient distribution is shown in Table 1.

[0032] Table 1 Weight Coefficients

[0033]

[0034] Step 1.1.2. Determine the gas internal energy difference before and after inflation of the gas storage reservoir according to the inflation correction coefficient and the temperature before and after inflation of the gas storage reservoir.

[0035] In the embodiments of the present invention, the above gas internal energy difference will be converted into heat, causing the temperature inside the gas storage reservoir to rise. Therefore, it is the heat that needs to be taken away by the heat exchange tube. During the long-term operation process, a certain range of the inner wall of the gas storage reservoir can be considered to have a constant temperature. Therefore, the heat absorbed by the inner wall is ignored in the embodiments of the present invention. Similarly, the heat that needs to be supplemented during the deflation process can also be calculated.

[0036] In the embodiment of the present invention, the temperature before gas injection into the gas storage reservoir and the temperature after gas injection can be determined respectively according to the gas state equation of formula (2).

[0037] (2)

[0038] In the formula, is the injection pressure, i.e., the internal pressure of the gas storage reservoir, is the volume of the gas storage reservoir, is the amount of substance of the gas, is the universal gas constant, is the temperature. During the gas injection process, the injection pressure and the amount of substance increase, and the temperature will also rise.

[0039] In the embodiment of the present invention, the pressure before gas injection into the gas storage reservoir is the atmospheric pressure, and the pressure after gas injection is the design pressure. Therefore, the temperature before gas injection into the gas storage reservoir can be determined according to the above formula (2) and the temperature after gas injection .

[0040] For an ideal gas, the internal energy is proportional to the temperature. Therefore, in the embodiment of the present invention, the internal energy of the gas before gas injection into the gas storage reservoir is determined according to the product of the temperature before gas injection into the gas storage reservoir and the injection correction coefficient , as shown in formula (3).

[0041] (3)

[0042] In the formula, is the injection correction coefficient, is the specific heat capacity at constant volume, is the amount of substance of the gas in the gas storage reservoir before gas injection, i.e., the amount of substance of air, is the temperature before gas injection into the gas storage reservoir.

[0043] According to the product of the temperature after gas injection into the gas storage reservoir and the injection correction coefficient the internal energy of the gas after gas injection into the gas storage reservoir is determined , as shown in formula (4).

[0044] (4)

[0045] In the formula, is the injection correction coefficient, is the specific heat capacity at constant volume, is the amount of substance of the gas in the gas storage reservoir after gas injection, is the temperature after gas injection into the gas storage reservoir.

[0046] After obtaining and After that, determine the difference between the internal energy of the gas in the gas storage reservoir after charging and the internal energy of the gas before charging the gas storage reservoir , and obtain the difference in gas internal energy, as shown in formula (5).

[0047] (5)

[0048] The difference in gas internal energy determined in the embodiment of the present invention is the heat that needs to be taken away by the heat exchange tube during the charging process. If it is a deflation process, then is the heat that needs to be supplemented by the heat exchange tube during the deflation process.

[0049] Step 1.2: Obtain the temperature difference between the inlet and outlet of the heat exchange tube in the temperature control device.

[0050] The heat exchange tube in the embodiment of the present invention includes a heat exchange inlet tube and a heat exchange outlet tube, so that after the heat exchange medium flows into the heat exchange inlet tube, it flows out from the heat exchange outlet tube. Then, the temperature difference between the inlet and outlet of the heat exchange tube is the temperature difference between the inlet of the heat exchange inlet tube and the outlet of the heat exchange outlet tube , It is determined according to the performance of the actual project or the cooling system, usually between 5° and 10°.

[0051] The heat exchange medium in the embodiment of the present invention can be water, heat-conducting oil, etc.

[0052] Step 2: Determine the flow diameter of the heat exchange tube according to the temperature difference and the difference in gas internal energy, specifically including:

[0053] Step 2.1: Determine the volume flow rate of the heat exchange tube according to the temperature difference and the difference in gas internal energy, specifically including:

[0054] Step 2.1.1: Determine the mass flow rate of the heat exchange tube according to the temperature difference and the difference in gas internal energy , as shown in formula (6).

[0055] (6)

[0056] In the formula,[[]] is the heat, which is approximately equal to , is the specific heat capacity of the heat exchange medium, the temperature difference between the inlet and outlet of the heat exchange tube.

[0057] Step 2.1.2: Determine the volume flow rate of the heat exchange tube according to the mass flow rate and the density of the heat exchange medium , as shown in formula (7).

[0058] (7)

[0059] In the formula, is the mass flow rate of the heat exchange tube, is the density of the heat exchange medium.

[0060] Step 2.2: Determine the flow-through diameter of the heat exchange tube according to the volume flow rate and the flow velocity of the heat exchange medium in the heat exchange tube .

[0061] In the embodiment of the present invention, when determining the flow-through diameter of the heat exchange tube , it is also necessary to consider the flow velocity of the heat exchange medium in the heat exchange tube. Excessive flow velocity will lead to excessive resistance, increasing the energy consumption of the heat exchange pump and the wear of the heat exchange tube; too low flow velocity may lead to uneven flow rate, affecting the heating and cooling effects. The flow velocity of the heat exchange medium in the heat exchange tube should be controlled between 1 m / s and 3 m / s, and the flow-through area can be determined according to the following formula (8) .

[0062] (8)

[0063] Since the heat exchange tube in the embodiment of the present invention is a circular tube, the flow-through diameter of the heat exchange tube can be determined according to the flow-through area .

[0064] Step 3: Determine the minimum wall thickness of the heat exchange tube according to the flow-through diameter, allowable stress of the heat exchange tube, and the maximum pressure borne by the heat exchange tube, specifically including: determining the product of the flow-through diameter of the heat exchange tube and the maximum pressure borne by the heat exchange tube; determining the minimum wall thickness of the heat exchange tube according to the quotient of the product and the allowable stress , as shown in formula (9):

[0065] (9)

[0066] In the formula, is the maximum pressure borne by the heat exchange tube, which is the maximum pressure obtained by comprehensively considering the internal pressure of the gas storage tank, the internal pressure of the heat exchange tube, and the external soil and rock pressure, is the flow-through diameter, is the allowable stress of the heat exchange tube material. In the embodiment of the present invention, considering the corrosion allowance of the pipe material, the wall thickness of the heat exchange tube is selected according to the principle of rounding up.

[0067] Starting from the perspective of heat exchange calculation, the present invention closely focuses on the two key points of gas state and inflation rate, and further provides a basis for the subsequent layout and parameter design of the heat exchange tube.

[0068] The present invention can achieve precise temperature control. Through accurate heat exchange calculation, the temperature control device can better adapt to different working conditions. Whether it is the temperature rise caused by the increase in gas internal energy during inflation or the heat that needs to be supplemented during deflation, effective heat regulation can be carried out through the heat exchange tube.​

[0069] The present invention comprehensively considers the heat demand, the temperature difference between the inlet and outlet of the heat exchange tube, and the flow rate of the heat exchange medium in the heat exchange tube. By reasonably selecting the flow-through diameter and controlling the flow rate, it not only ensures that there is enough heat exchange medium to carry away or provide the required heat, but also avoids the problems of excessive resistance and increased pump energy consumption caused by too high a flow rate, as well as unevenness and poor heating and cooling effects caused by too low a flow rate. Thus, the energy utilization efficiency of the entire system is improved, and efficient energy utilization and energy conservation can be achieved.

[0070] The second aspect of the present invention provides a temperature control device for a gas storage reservoir, and its parameters are determined by using the parameter determination method of the above-mentioned temperature control device for a gas storage reservoir.

[0071] The structure of the gas storage reservoir according to the embodiment of the present invention is as Figure 2 shown, and it includes a gas storage chamber and a plug 5, and a sealing door 4 is arranged between the plug 5 and the gas storage chamber.

[0072] The inner wall of the above-mentioned gas storage chamber is provided with an inner-to-outer sealing layer 3 and a lining layer 2, and the lining layer 2 is a reinforced concrete structure.

[0073] The heat exchange tube in the temperature control device according to the embodiment of the present invention includes a heat exchange inlet tube 1 and a heat exchange outlet tube 6; the heat exchange inlet tube 1 is of a spiral structure, and it is wound around the lining layer 2 of the gas storage reservoir along the axial direction of the gas storage reservoir. The inlet of the heat exchange inlet tube 1 extends out of the lining layer 2, and an inlet valve 7, an inlet flow meter, and an inlet thermometer 9 are arranged on the extending end; the heat exchange outlet tube 6 is embedded in the lining layer 2, one end of it is communicated with the outlet of the heat exchange inlet tube 1, the other end extends out of the lining layer 2, and an outlet valve 8, an outlet flow meter, and an outlet thermometer 10 are arranged on the extending end.

[0074] The temperature control device for a gas storage reservoir of the present invention can take away the excess heat in the gas storage reservoir in the gas charging state and supplement heat into the gas storage reservoir in the gas discharging state, so that the temperature of the gas storage reservoir is relatively stable, reducing the influence of the temperature load on the lining structure, improving the reliability and service life of the gas storage reservoir. At the same time, there is no need to adjust the gas charging or discharging process according to the temperature of the gas storage reservoir as in the prior art. Therefore, the efficiency of gas charging and discharging can be guaranteed, and the gas storage reservoir can operate normally.

[0075] The embodiment of the present invention defines that the ratio of the thickness of the lining layer 2 to the distance between the heat exchange inlet tube 1 and the inner surface of the lining layer 2 is 1:0.3 - 0.4, the pitch L0 of the spiral structure is 1 m - 2 m and is greater than or equal to a preset multiple of the thickness of the lining layer 2, and the preset multiple can be 1.5 times - 2.5 times, preferably 2 times. The design of the pitch of the spiral heat exchange inlet tube 1 of the present invention and its relative position with the lining helps to evenly distribute the heat in the gas storage reservoir, making the cooling or heating effect more uniform and avoiding local overheating or overcooling.

[0076] To ensure the stability of the fixed heat exchange tubes, in the embodiments of the present invention, anchor reinforcement rings are pre-embedded along the tube circumference. The reinforcement rings are firmly welded to the lining reinforcement to form an integral stress-bearing structure, restricting the displacement of the heat exchange tubes. This can ensure the temperature control effect while taking into account the safety and service life of the water pipes. The layout spacing of the heat exchange tubes can be densified at the locations where the shape of the gas storage reservoir changes abruptly.

[0077] Relying on interdisciplinary theoretical supports such as thermodynamics, fluid mechanics, material mechanics and structural engineering, the present invention has carefully constructed a set of all-round and refined temperature control devices for gas storage reservoirs and methods for determining their parameters, laying a solid foundation for the long-term and reliable operation of compressed air energy storage power stations.

[0078] The above are only several embodiments of the present invention and do not impose any form of limitation on the present invention. Although the present invention is disclosed as above with preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art, without departing from the scope of the technical solution of the present invention, making some changes or modifications using the technical content disclosed above is equivalent to equivalent implementation cases and all fall within the scope of the technical solution.

Claims

1. A method for determining parameters of a temperature control device for a gas storage, characterized in that: include: Obtaining the temperature difference between the inlet and outlet of the heat exchange tube in the temperature control device and determining the difference in gas internal energy before and after the gas storage is filled, wherein the temperature control device is arranged in the lining layer of the gas storage; Determining the flow diameter of the heat exchange tube according to the temperature difference and the gas internal energy difference; Determining the minimum wall thickness of the heat exchange tube according to the flow diameter, allowable stress and maximum pressure borne by the heat exchange tube; Determine the difference in gas internal energy before and after the gas storage is filled, including: Determining an inflation correction coefficient according to inflation parameters of the gas storage reservoir, wherein the inflation parameters include at least one of inflation speed, inflation pressure, inflation time and constant volume specific heat capacity; The difference in gas internal energy before and after the gas storage reservoir is filled is determined based on the filling correction coefficient and the temperature of the gas storage reservoir before and after the filling.

2. The method for determining parameters of a temperature control device for a gas storage according to claim 1, characterized in that: Determining the gas internal energy difference before and after the gas storage is filled with gas according to the inflation correction coefficient and the temperature of the gas storage before and after the gas storage is filled with gas, specifically includes: Determining the gas internal energy of the gas storage before filling according to the product of the temperature of the gas storage before filling and the filling correction coefficient; Determining the gas internal energy of the gas storage after the gas storage is inflated according to the product of the temperature of the gas storage after the gas storage is inflated and the inflation correction coefficient; The difference between the internal energy of the gas after the gas storage reservoir is filled with gas and the internal energy of the gas before the gas storage reservoir is filled with gas is determined to obtain the gas internal energy difference.

3. The method for determining parameters of a temperature control device for a gas storage according to claim 1, characterized in that: Determining the flow diameter of the heat exchange tube according to the temperature difference and the gas internal energy difference specifically includes: Determining the volume flow rate of the heat exchange tube according to the temperature difference and the gas internal energy difference; The flow diameter is determined according to the volume flow rate and the flow velocity of the heat exchange medium in the heat exchange tube.

4. The method for determining parameters of a temperature control device for a gas storage according to claim 3, characterized in that: Determining the volume flow rate of the heat exchange tube according to the temperature difference and the gas internal energy difference specifically includes: Determining the mass flow rate of the heat exchange tube according to the temperature difference and the gas internal energy difference; The volume flow rate of the heat exchange tube is determined according to the mass flow rate and the density of the heat exchange medium.

5. The method for determining parameters of a temperature control device for a gas storage according to claim 1, characterized in that: The minimum wall thickness of the heat exchange tube is determined according to the flow diameter, allowable stress and maximum pressure of the heat exchange tube, specifically including: Determine the product of the flow diameter of the heat exchange tube and the maximum pressure that the heat exchange tube can withstand; The minimum wall thickness of the heat exchange tube is determined according to the quotient of the product and the allowable stress.

6. A temperature control device for a gas storage, wherein the parameters of the temperature control device for a gas storage are determined by using the parameter determination method for the temperature control device for a gas storage according to any one of claims 1 to 5, characterized in that: The heat exchange tube includes a heat exchange inlet tube and a heat exchange outlet tube; The heat exchange inlet pipe is a spiral structure, which is wound in the lining layer of the gas storage reservoir along the axial direction of the gas storage reservoir, and the inlet of the heat exchange inlet pipe extends out of the lining layer; The heat exchange outlet pipe is pre-buried in the lining layer, one end of which is connected to the outlet of the heat exchange inlet pipe, and the other end extends out of the lining layer.

7. The temperature control device for a gas storage according to claim 6, characterized in that: The ratio of the thickness of the lining layer to the distance between the heat exchange inlet pipe and the inner surface of the lining layer is 1:0.3-0.

4.

8. The temperature control device for a gas storage according to claim 6, characterized in that: The pitch of the spiral structure is 1m-2m and is greater than or equal to a preset multiple of the thickness of the lining layer.

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