Gas injection pipeline flow guide cooling device and cooling method in tunnel gas storage

Abstract

The application discloses a tunnel type gas storage in-gas pipeline flow guide cooling device and a cooling method thereof. The device is applied in the gas storage to change the air distribution inside the gas storage, reduce the temperature at the top of the gas storage and improve the gas filling speed in the gas storage. The device comprises a manhole pipeline, a swing pipeline, a top pipeline, a plurality of air outlets and a supporting mechanism. The method is suitable for the tunnel type gas storage in-gas pipeline flow guide cooling device. The air inlet pipeline at the lower part of the gas storage is introduced to the top of the gas storage through the device, the temperature field distribution inside the gas storage is changed through the air outlets at the top and the air outlet at the tail end, the temperature at the top is reduced, and the gas filling speed in the gas storage is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of artificial cavern type gas storage, in particular to a gas injection pipeline flow guide cooling device and a cooling method thereof in a tunnel type gas storage. BACKGROUND

[0002] As a key energy storage facility, compressed air energy storage (CAES) artificial cavern type gas storage is a carefully constructed underground gas storage space formed by artificially excavating underground rock mass. This kind of gas storage is mainly divided into two typical categories in terms of structure. One is a large tank type gas storage, which usually has a large single gas storage space and can achieve a high gas storage capacity in a limited land area. The other is a tunnel type gas storage, which cleverly uses underground space for gas storage by means of a long tunnel structure and can be flexibly arranged according to the terrain and geological conditions.

[0003] During the key process of air charging and pressurization of compressed air energy storage gas storage, the air temperature inside the cavern will rise sharply. In-depth research shows that the temperature rise inside the cavern is mainly affected by two very significant thermodynamic factors. On the one hand, the injected air is rapidly compressed in the cavern. According to the principle of thermodynamics, the compression process of gas will be accompanied by the generation of a large amount of heat, and this part of heat is continuously released into the cavern space, becoming an important heat source leading to temperature rise. On the other hand, a part of the kinetic energy carried by the incident air interacts with the surrounding medium in the cavern. In this process, the kinetic energy is gradually converted into heat energy, further aggravating the temperature rise in the cavern.

[0004] With the advancement of the air charging and pressurization process of the gas storage, the distribution of the gas temperature field inside the cavern presents a clear uneven state. Because the density of hot air is relatively small and the density of cold air is relatively large, there will be a convection phenomenon of hot air rising naturally and cold air descending naturally. This convection causes a large amount of hot air to gather in the upper region of the gas storage, and its temperature is much higher than that in the lower region. When the temperature in the upper region of the gas storage rises above a certain threshold, the high-temperature environment will have many adverse effects on the sealing structure of the gas storage. High temperature can cause changes in the physical properties of the sealing material, such as reduced elasticity, increased hardness, etc., thereby weakening the sealing performance of the sealing structure, and even in extreme cases, it can directly cause damage to the sealing structure, causing gas leakage and other serious problems in the gas storage.

[0005] During the pressurization process of a gas storage facility, effectively controlling the temperature rise of the gas is crucial to ensuring its safe and stable operation. The core objective is to minimize the adverse effects of temperature on the sealing structure. In past practices, traditional methods have often employed intermittent filling strategies to attempt to control temperature rise. This method involves periodically pausing filling, allowing time for heat within the chamber to transfer to the surrounding rock mass and dissipate, thus controlling the temperature increase to some extent. However, this method has significant drawbacks. Frequent intermittent operations inevitably lead to a substantial extension of the filling time. For energy storage power stations, prolonged filling time means reduced efficiency in the entire energy storage process, hindering the efficient conversion of excess electrical energy into the potential energy of compressed air for storage. This, in turn, affects the overall operational efficiency and economic benefits of the energy storage power station within the power system. Therefore, given current technological development needs, there is an urgent need to develop a novel method that can effectively alter the temperature field distribution within the gas storage facility, breaking through the limitations of traditional intermittent filling methods to improve filling efficiency and ultimately enhance the operational efficiency of energy storage power stations, better meeting the urgent demands of modern energy systems for high-efficiency energy storage technologies. Summary of the Invention

[0006] The purpose of this invention is to provide a cooling device and cooling method for the gas injection pipeline in a tunnel-type gas storage facility, so as to solve the above-mentioned shortcomings in the prior art.

[0007] To achieve the above objectives, the present invention provides one of the following technical solutions: a gas injection pipeline diversion and cooling device for a tunnel-type gas storage facility. This device is applied inside the gas storage facility 1 to change the air distribution inside the gas storage facility 1, thereby reducing the top temperature inside the gas storage facility 1 and increasing the gas filling speed inside the gas storage facility 1. The device includes:

[0008] Manhole pipe 2 is installed on the sealed end of gas storage tank 1;

[0009] The swing pipe 3 is used to compensate for displacement and buffer pressure by swinging and deforming itself when the gas storage tank 1 is subjected to changes in geological conditions, temperature changes and gas pressure fluctuations during operation, so as to avoid damage to the manhole pipe 2 due to stress concentration; the swing pipe 3 is located inside the gas storage tank 1 and one end of it is rotatably connected to one end of the manhole pipe 2.

[0010] Top pipe 4 is located inside gas storage tank 1; one end of top pipe 4 is connected to the other end of swing pipe 3, and the other end is located at the bottom of the sealed end away from gas storage tank 1.

[0011] Multiple air outlets 5 are sequentially opened on the transverse pipe of the top pipe 4 along the length of the transverse pipe of the top pipe 4.

[0012] Supporting mechanism 6 is fixedly installed in the gas storage 1; the supporting mechanism 6 is used to support the transverse pipe of the top pipe 4 in the gas storage 1 top;

[0013] Wherein, the hole diameter of the plurality of gas outlet holes 5 opened from one end of the manhole pipe 2 gradually increases in turn, for improving the temperature uniformity of the gas storage 1 axial.

[0014] As a preferred embodiment of the application, the one end of the swing pipe 3 is connected with the one end of the manhole pipe 2 through the rotating mechanism 7, when the swing pipe 3 swings and deforms through the rotating mechanism 7 and the one end of the manhole pipe 2, the protection of the top pipe 4 and the sealing and stability of the gas storage 1 are completed.

[0015] As a preferred embodiment of the application, the rotating mechanism 7 comprises:

[0016] Rotating groove 701 is opened on the outer surface of the manhole pipe 2;

[0017] Rotating slider 702 is fixedly installed on the end surface of the swing pipe 3 close to the manhole pipe 2;

[0018] Wherein, the rotating slider 702 is embedded in the rotating groove 701;

[0019] When the swing pipe 3 is subjected to geological conditions change, temperature change and gas pressure fluctuation, the swing pipe 3 swings and deforms through the sliding of the rotating slider 702 in the rotating groove 701.

[0020] As a preferred embodiment of the application, the supporting mechanism 6 comprises:

[0021] At least one arc-shaped support 601, the bottom arc-shaped support body is welded and installed on the bottom arc-shaped surface of the gas storage 1;

[0022] At least one supporting ring 602 is located at the top end of the arc-shaped support 601;

[0023] A plurality of cross beams 603 are used for the mutual connection of each arc-shaped support 601, and the stability of the supporting mechanism 6 is increased;

[0024] Wherein, each supporting ring 602 is sleeved on the transverse pipe of the top pipe 4.

[0025] As a preferred embodiment of the application, the pipe body close to the one end of the manhole pipe 2 of the swing pipe 3 is a variable diameter pipe;

[0026] The end surface pipe diameter of the pipe body close to the one end of the manhole pipe 2 of the swing pipe 3 is the same as the pipe diameter of the manhole pipe 2;

[0027] The end face pipe diameter of the pipe body connected with one end of the top pipe 4 is the same as the pipe diameter of the top pipe 4.

[0028] The application provides another technical scheme as follows: a cooling method suitable for the gas injection pipe flow guide cooling device in the tunnel type gas storage, the method comprising:

[0029] S1, external air enters the gas storage 1 through the manhole pipe 2, and when the air reaches the air inlet of the gas storage 1, the temperature is low, and the air reaches the top pipe 4 through the swing pipe 3, and the cold air is blown into the upper part of the gas storage 1 through the air outlet hole 5 at the lower side of the top pipe 4, so that the temperature of the upper part of the gas storage 1 is reduced;

[0030] S2, the temperature uniformity in the axial direction of the gas storage 1 is improved through the gradually increasing air outlet hole 5 at the lower part of the top pipe 4;

[0031] S3, when the cold air passes through the top pipe 4, heat exchange is generated with the outside of the top pipe 4, the heat of the upper part of the gas storage 1 is taken to the lower part of the gas storage 1, and the heat exchange between the upper and lower parts of the gas storage 1 is promoted, so that the temperature of the upper part of the gas storage 1 is reduced.

[0032] In the above technical scheme, the tunnel type gas storage gas injection pipe flow guide cooling device and the cooling method provided by the application, the gradually increasing air outlet hole is arranged, and the air outlet hole is arranged at the tail end of the pipe. When the gas is transported from the lower part of the gas storage to the top along the modified pipe, a part of the gas is discharged in order through the air outlet hole at the top. These air outlet holes are not arranged randomly, but are arranged to ensure that the discharged gas can be uniformly and efficiently diffused to every space at the top. With the diffusion of the low-temperature gas, it is rapidly mixed with the high-temperature gas at the top, and in this process, according to the heat transfer principle, the heat of the high-temperature gas is absorbed and taken away by the low-temperature gas, and the temperature of the top area is effectively reduced. At the same time, another part of the gas is discharged through the air outlet hole at the tail end of the pipe, which plays a key role in promoting the circulation of the gas in the gas storage. The existence of the air outlet hole at the tail end promotes the circulation of the gas in the gas storage, so that the gas at different temperatures can be fully mixed, the temperature field distribution is further optimized, and the continuous existence and expansion of the local high-temperature area are effectively avoided.

[0033] In the high-temperature state, the gas molecules move extremely actively, the repulsive force between the molecules increases, the newly injected gas faces strong resistance when entering the gas storage, and the gas filling process is slow and difficult. But as the temperature at the top decreases, the activity of gas molecules returns to normal, the intermolecular distance tends to be stable, and the newly injected gas can more smoothly fill every corner of the gas storage, greatly improving the gas filling speed. This not only significantly improves the working efficiency of the gas storage, greatly shortens the time required for single gas filling, reduces energy consumption, but also reduces the running burden of the gas storage equipment due to the improvement of the temperature environment, prolongs the service life of the equipment to some extent, reduces the equipment maintenance cost and frequency, and provides strong support for efficient, stable and economic operation of the tunnel type gas storage. BRIEF DESCRIPTION OF DRAWINGS

[0034] In order to make the skilled in the art better understand the technical solutions of the present application, the drawings needed in the embodiments or prior art will be briefly introduced as follows. Obviously, the drawings described below are only some embodiments described in the present application, and other drawings can also be obtained by those skilled in the art according to these drawings.

[0035] Figure 1 It is a structural schematic view of the gas injection pipeline flow guide and cooling device in the tunnel type gas storage.

[0036] Figure 2 It is a structural schematic view of the gas injection pipeline flow guide and cooling device in the tunnel type gas storage.

[0037] Figure 3 It is a structural schematic view of the swing pipe of the gas injection pipeline flow guide and cooling device in the tunnel type gas storage.

[0038] Figure 4 It is a structural schematic view of the manhole pipeline of the gas injection pipeline flow guide and cooling device in the tunnel type gas storage.

[0039] Figure 5 It is a bottom view of the top pipeline of the gas injection pipeline flow guide and cooling device in the tunnel type gas storage.

[0040] BRIEF DESCRIPTION OF DRAWINGS

[0041] 1, gas storage; 2, manhole pipeline; 3, swing pipe; 4, top pipeline; 5, gas outlet; 6, support frame; 601, arc-shaped support; 602, support ring; 603, crossbeam; 7, rotating mechanism; 701, rotating groove; 702, rotating sliding block. DETAILED DESCRIPTION

[0042] In order to make the skilled in the art better understand the technical solutions of the present application, the drawings needed in the embodiments or prior art will be briefly introduced as follows. Obviously, the drawings described below are only some embodiments described in the present application, and other drawings can also be obtained by those skilled in the art according to these drawings.

[0043] Example 1

[0044] like Figures 1-5 As shown, a gas injection pipeline diversion and cooling device is used inside the tunnel-type gas storage facility. This device alters the air distribution inside the gas storage facility 1, thereby reducing the top temperature and increasing the gas filling speed. The device includes:

[0045] Manhole pipe 2 is installed on the sealed end of gas storage tank 1;

[0046] Specifically, the construction team uses advanced installation techniques to connect the manhole pipe 2 to the sealing end in a tight and stable manner, ensuring that the sealing performance of the connection reaches an extremely high standard. This ensures that gas will not leak from the connection between the manhole pipe 2 and the sealing end during the subsequent operation of the gas storage facility 1, thus enabling the manhole pipe 2 to play a key role in the daily operation and maintenance and emergency operation of the gas storage facility 1.

[0047] The device also includes a swing pipe 3, which is used to compensate for displacement and buffer pressure by swinging and deforming itself when the gas storage tank 1 is subjected to changes in geological conditions, temperature changes and gas pressure fluctuations during operation, so as to avoid damage to the manhole pipe 2 due to stress concentration; the swing pipe 3 is located inside the gas storage tank 1, and one end of it is rotatably connected to one end of the manhole pipe 2.

[0048] Furthermore, one end of the swing pipe 3 is connected to one end of the manhole pipe 2 through the rotating mechanism 7. When the swing pipe 3 swings and deforms itself through the rotating mechanism 7 and the manhole pipe 2, it protects the top pipe 4 and the airtightness and stability of the gas storage tank 1.

[0049] Furthermore, the rotating mechanism 7 includes:

[0050] Rotary groove 701 is formed on the outer surface of manhole pipe 2;

[0051] Rotate the slider 702, which is fixedly installed on the end face of the swing tube 3 near the manhole pipe 2;

[0052] The rotating slider 702 is embedded in the rotating groove 701;

[0053] When the swing tube 3 is subjected to changes in geological conditions, temperature changes and gas pressure fluctuations, the swing tube 3 swings and deforms by sliding the rotating slider 702 in the rotating groove 701.

[0054] Specifically, when the geological conditions change, for example, the ground subsides or the crust slightly shifts, the overall structure of the gas storage 1 will be displaced accordingly. After the swing pipe 3 senses the change, the rotating slider 702 will quickly start to slide in the rotating groove 701. Due to the special arc and guide design of the rotating groove 701, the sliding of the rotating slider 702 drives the swing pipe 3 to make accurate angle adjustment and moderate bending deformation, thereby ingeniously compensating for the impact of the displacement of the gas storage structure and effectively avoiding the pulling and damage to the top pipe 4 caused by stress concentration.

[0055] When facing temperature changes, the gas in the gas storage 1 expands or shrinks due to heating or cooling, which will cause fluctuations in the pressure in the pipeline system. The swing pipe 3 again plays a key role, and the rotating slider 702 flexibly slides in the rotating groove 701 under the thermal expansion and contraction force caused by temperature. When the gas expands due to heating and the pressure rises, the rotating slider 702 will slide in a specific direction along the rotating groove 701, causing the swing pipe 3 to appropriately expand and deform, buffering the high pressure; on the contrary, when the temperature decreases and the gas shrinks, the pressure decreases, and the rotating slider 702 will slide in the opposite direction, driving the swing pipe 3 to restore part of its shape and maintain the relative stability of the pressure in the pipeline system. This process effectively protects the top pipe 4 from being damaged by pressure impact caused by temperature changes.

[0056] In the case of more severe gas pressure fluctuations, whether it is high pressure impact or low pressure change, the rotating slider 702 can quickly and stably slide in the rotating groove 701 under the driving of the pressure, so that the swing pipe 3 makes corresponding swinging and deforming actions in time. In this way, the swing pipe 3 not only successfully buffers the impact of pressure fluctuations on the top pipe 4, but also ensures the sealing of the gas storage 1. Since the deformation of the swing pipe 3 is always within a controllable range, and the connection part of the swing pipe 3 with the surrounding pipes and the gas storage wall is designed reasonably, it can still be closely fitted during deformation, thereby preventing the risk of gas leakage and maintaining the sealing and stability of the gas storage 1.

[0057] Through the sliding of the rotating slider 702 in the rotating groove 701, the swing pipe 3 can continuously and reliably provide all-round protection for the top pipe 4 under complex and variable working conditions, while providing protection for the sealing and stability of the gas storage 1.

[0058] Further, the pipe body of the swing pipe 3 near one end of the manhole pipe 2 is a variable diameter pipe;

[0059] The end face pipe diameter of the pipe body of the swing pipe 3 near one end of the manhole pipe 2 is the same as the pipe diameter of the manhole pipe 2;

[0060] The end face pipe diameter of the pipe body of the swing pipe 3 connected to one end of the top pipe 4 is the same as the pipe diameter of the top pipe 4.

[0061] Specifically, to ensure stable operation under complex working conditions. The end face pipe diameter of the pipe body near one end of the manhole pipeline 2 is accurately measured and calculated, and is accurately set to be the same as the pipe diameter of the manhole pipeline 2. It can effectively avoid the sudden change of gas flow rate and pressure loss caused by the difference in pipe diameter, ensure the smooth transition of gas between the pipelines, and greatly improve the operation efficiency of the entire pipeline system.

[0062] The end face pipe diameter of the pipe body connected to one end of the top pipeline 4 is also customized according to the pipe diameter of the top pipeline 4. During manufacturing, the end face pipe diameter is ensured to be consistent with the pipe diameter of the top pipeline 4. When the swing pipe 3 is connected to the top pipeline 4, smooth gas flow can be achieved, reducing turbulence caused by mismatched pipe diameters, reducing the operating resistance of the pipeline system, and thus improving the stability and reliability of the entire gas storage system.

[0063] The device also includes a top pipeline 4 located in the gas storage 1; one end of the top pipeline 4 is connected to the other end of the swing pipe 3, and the other end is located at the bottom away from the sealed end of the gas storage 1;

[0064] The device also includes a plurality of gas outlets 5, which are sequentially arranged along the length direction of the horizontal pipeline of the top pipeline 4;

[0065] Among them, the hole diameters of the plurality of gas outlets 5 arranged from one end of the manhole pipeline 2 gradually increase, which is used to improve the uniformity of the temperature along the axial direction of the gas storage 1.

[0066] Specifically, during the operation of the gas storage, the flow of gas in the storage will cause uneven temperature distribution, especially along the axial direction of the gas storage 1, the temperature difference is more obvious. The gas outlet 5 with a smaller hole diameter is close to one end of the manhole pipeline 2, which can preliminarily control the outflow speed and flow of the gas. As the gas flows horizontally along the top pipeline 4, the subsequent gas outlets 5 with gradually increasing hole diameters will adjust the amount of gas escaping according to the parameters such as pressure, temperature and flow rate of the gas. The gas in the high-temperature area can escape faster through the gas outlet 5 with a larger hole diameter and mix with the surrounding gas, while the gas in the low-temperature area can maintain a relatively stable gas exchange through the gas outlet 5 with a smaller hole diameter. In this way, the uniformity of the temperature along the axial direction of the gas storage 1 is improved, and the temperature environment of each area in the gas storage is more balanced, providing a strong guarantee for the efficient and stable operation of the gas storage.

[0067] The device also includes a support mechanism 6 fixedly installed in the gas storage 1; the support mechanism 6 is used to support the horizontal pipeline of the top pipeline 4 at the top of the gas storage 1;

[0068] Further, the support mechanism 6 includes:

[0069] At least one arc-shaped support 601, the bottom arc-shaped bracket body of which is installed on the bottom arc-shaped surface of the gas storage 1 by welding;

[0070] At least one support ring 602, which is located at the top end of the arc-shaped support 601;

[0071] A plurality of cross beams 603 for the mutual connection of each arc-shaped support 601, to increase the stability of the support mechanism 6;

[0072] Each of the support rings 602 is sleeved on the transverse pipe of the top pipe 4.

[0073] Specifically, the bottom arc-shaped bracket body of the arc-shaped support 601 is made of high-quality aluminum alloy material, which has extremely high strength and corrosion resistance and can withstand various stresses under the complex internal environment of the gas storage 1. During installation, the bottom arc-shaped bracket body of the arc-shaped support 601 is welded to the arc-shaped surface at the bottom of the gas storage 1 by welding process, to ensure that the strength of the welded part reaches or exceeds the strength standard of the support itself, to cope with the vibration, displacement and other situations that may occur during the operation of the gas storage.

[0074] The support ring 602 is made of special aluminum alloy material, which has good toughness and can adapt to the slight shaking of the top pipe 4 during operation, and can effectively buffer the force caused by pipe vibration or gas flow impact. The inner diameter of the support ring 602 is accurately calculated and processed, and can be tightly and flexibly sleeved on the transverse pipe of the top pipe 4, which provides stable support for the pipe and does not hinder the normal displacement and deformation of the pipe within a certain range.

[0075] To further enhance the stability of the support mechanism 6, a plurality of cross beams 603 are also provided. The cross beams 603 are also made of high-strength aluminum alloy material, and their length and spacing are reasonably planned according to the actual size of the gas storage 1 and the layout of the top pipe 4. These cross beams 603 span between each arc-shaped support 601, and are connected to each other by welding or high-strength bolt connection, etc. The support mechanism 6 forms a stable space frame structure, greatly improving the overall carrying capacity and anti-deformation ability, and can better cope with the requirements of supporting the top pipe 4 under the complex internal conditions of the gas storage 1, providing structural support and protection for the safe and stable operation of the entire gas storage system.

[0076] Example 2

[0077] A cooling method, which is applicable to the gas injection pipe flow guide and cooling device in the tunnel-type gas storage described in Example 1, the method comprising:

[0078] S1, the outside air enters the gas storage through the manhole pipeline 2, when the air reaches the air inlet of the gas storage 1, the temperature is low, through the swing pipe 3 to the top pipeline 4, through the air outlet hole 5 on the lower side of the top pipeline 4, the cold air is blown into the upper part of the gas storage 1, and the temperature of the upper part of the gas storage 1 is reduced;

[0079] Specifically, when the air reaches the air inlet of the gas storage 1, the temperature is relatively low due to the influence of external environmental factors. Then, the air flows along the swing pipe 3 and flows in the pipeline, gradually climbing to the high place of the gas storage. Until reaching the top pipeline 4. The lower side of the top pipeline 4 is uniformly distributed with gradually increasing air outlet holes 5, when the air flows through here, it is blown into the upper space of the gas storage 1 through the air outlet holes 5 in the form of jet. These blown cold air quickly spreads in the upper part of the gas storage 1, and continuously exchanges heat with the surrounding hot air, thereby effectively reducing the temperature of the upper part of the gas storage 1, and playing a key role in maintaining a suitable temperature environment in the gas storage.

[0080] S2, through the gradually increasing air outlet holes 5 on the lower part of the top pipeline 4, the uniformity of the temperature along the axial direction of the gas storage 1 is improved;

[0081] Specifically, from the axial perspective of the gas storage 1, the cold air sprayed by the small air outlet hole forms a low temperature area in the vicinity, while the cold air sprayed by the large air outlet hole can cover a farther position. Different intensity of cold air jet flow interweave and fuse, fully diffuse in the axial range of the upper part of the gas storage 1, and continuously exchange heat with the surrounding air with originally high temperature. In this process, the heat of the high temperature area is continuously neutralized by the cold air, and the low temperature area is also continuously supplemented and mixed by the cold air, which finally significantly improves the uniformity of the temperature along the axial direction of the gas storage 1, and provides a more suitable and stable temperature environment for the stable operation of various equipment in the gas storage and the good preservation of stored materials.

[0082] S3, when the cold air passes through the top pipeline 4, heat exchange occurs with the outside of the top pipeline 4, the heat of the upper part of the gas storage 1 is brought to the lower part of the gas storage 1, and the heat exchange between the upper and lower parts of the gas storage 1 is promoted to reduce the temperature of the upper part of the gas storage.

[0083] Specifically, in the lower space of the gas storage 1, the temperature is originally relatively high, and with the entry of these cold air carrying the heat of the upper part, the cold and hot air begins to mix violently. In the mixing process, the cold air continues to absorb the heat of the lower part, further realizing the exchange of heat between the upper and lower parts of the gas storage 1. The heat of the upper part of the gas storage 1 is thus brought to the lower part, and the upper part is lowered in temperature due to heat loss, and the lower part is also adjusted in temperature distribution due to heat input and air mixing. Through this continuous heat exchange process, the heat distribution of the upper and lower parts of the gas storage 1 is more balanced, effectively reducing the excessively high temperature of the upper part of the gas storage 1, creating a more suitable and stable temperature environment in the gas storage, greatly benefiting the smooth operation of various equipment in the gas storage and the proper preservation of the stored materials.

[0084] The foregoing merely illustrates some exemplary embodiments of the present application, and it is needless to say that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present application. Therefore, the foregoing drawings and descriptions are illustrative in nature, and should not be construed as limiting the scope of protection of the claims of the present application.

Claims

1. A tunnel gas storage injection pipeline flow guide cooling device, which is applied in a gas storage (1) to change the air distribution inside the gas storage (1), reduce the temperature at the top of the gas storage (1), and improve the speed of gas filling in the gas storage (1), characterized in that, The device comprises: A manhole pipeline (2) is installed on the sealed end of the gas storage (1); A swing pipe (3) is used to swing and deform to compensate displacement and buffer pressure when the gas storage (1) is subjected to changes in geological conditions, temperature changes and gas pressure fluctuations during operation, thereby avoiding damage to the manhole pipeline (2) due to stress concentration; the swing pipe (3) is located in the gas storage (1), and one end of the swing pipe (3) is rotatably connected to one end of the manhole pipeline (2); A top pipeline (4) is located in the gas storage (1); one end of the top pipeline (4) is connected to the other end of the swing pipe (3), and the other end is located at the bottom away from the sealed end of the gas storage (1); A plurality of gas outlets (5) are sequentially provided on the transverse pipeline of the top pipeline (4) along the length direction of the transverse pipeline; A support mechanism (6) is fixedly installed in the gas storage (1); the support mechanism (6) is used to support the transverse pipeline of the top pipeline (4) at the top in the gas storage (1); Wherein, the diameters of the plurality of gas outlets (5) sequentially and gradually increase from one end of the manhole pipeline (2), for improving the uniformity of temperature along the axial direction of the gas storage (1); The one end of the swing pipe (3) is connected to the one end of the manhole pipeline (2) through a rotating mechanism (7), when the swing pipe (3) swings and deforms through the rotating mechanism (7) to realize the swing and deformation of the swing pipe (3), the protection of the top pipeline (4) and the sealing and stability of the gas storage (1) are completed.

2. The gas injection pipeline flow guide and cooling device in a tunnel-type gas storage according to claim 1, characterized in that, The rotating mechanism (7) comprises: A rotating groove (701) is provided on the outer surface of the manhole pipeline (2); A rotating slide block (702) is fixedly installed on the end face of the swing pipe (3) close to the manhole pipeline (2); Wherein, the rotating slide block (702) is embedded in the rotating groove (701); When the swing pipe (3) is subjected to changes in geological conditions, temperature changes and gas pressure fluctuations, the swing pipe (3) swings and deforms through the sliding of the rotating slide block (702) in the rotating groove (701).

3. The gas injection pipeline flow guide and cooling device in a tunnel-type gas storage according to claim 1, characterized in that, The support mechanism (6) comprises: At least one arc-shaped support (601) is welded and installed on the bottom arc-shaped surface of the gas storage (1) at the bottom arc-shaped body thereof; At least one support ring (602) is located at the top end of the arc-shaped support (601); A plurality of cross beams (603) are used to connect each arc-shaped support (601) to each other, thereby increasing the stability of the support mechanism (6); Wherein, each support ring (602) is sleeved on the transverse pipeline of the top pipeline (4).

4. The gas injection pipeline flow guide and cooling device in a tunnel-type gas storage according to claim 1, characterized in that, The pipe body close to one end of the manhole pipeline (2) of the swing pipe (3) is a variable-diameter pipe; The end face pipe diameter of the pipe body close to one end of the manhole pipeline (2) of the swing pipe (3) is the same as the pipe diameter of the manhole pipeline (2); The end face pipe diameter of the pipe body connected to one end of the top pipeline (4) of the swing pipe (3) is the same as the pipe diameter of the top pipeline (4).

5. A method of cooling, characterized by, The method is applicable to the tunnel-type gas storage pipeline flow guide and cooling device of any one of claims 1-4, and the method comprises: S1, the outside air enters the gas storage through the manhole pipeline (2), when the air reaches the air inlet of the gas storage (1), the temperature is low, through the swing pipe (3) to the top pipeline (4), through the air outlet hole (5) on the lower side of the top pipeline (4), the cold air is blown into the upper part of the gas storage (1), and the temperature of the upper part of the gas storage (1) is reduced; S2, through the gradually increasing air outlet hole (5) on the lower part of the top pipeline (4), the temperature uniformity in the axial direction of the gas storage (1) is improved; S3, when the cold air passes through the top pipeline (4), heat exchange is generated with the outside of the top pipeline (4), the heat of the upper part of the gas storage (1) is taken to the lower part of the gas storage (1), the heat exchange between the upper and lower parts of the gas storage (1) is promoted, and the temperature of the upper part of the gas storage is reduced.

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