Steel lining stiffening ring of gas storage chamber of compressed gas energy storage power station

Abstract

The utility model discloses a steel lining stiffening ring of a gas storage chamber of a compressed air energy storage power station, and belongs to the technical field of air compression energy storage. The stiffening ring is arranged on a steel sealing layer in a sleeving mode, a plurality of bionic buckles are evenly distributed on the peripheral wall of the stiffening ring and used for being embedded into a concrete lining, the longitudinal section of each bionic buckle is in an oval shape, the long axis of the oval of the longitudinal section of each bionic buckle is a, the short axis of the oval of the longitudinal section of each bionic buckle is b, and the ratio of a to b is 2.2: 1. By optimizing the contact structure between the concrete lining and the steel sealing layer, the stress borne by the lining is reduced, and lining damage caused by the increase of the air pressure and the air temperature of the chamber is avoided, so that the concrete lining in the chamber is prevented from disengaging to generate a gap.

Description

TECHNICAL FIELD

[0001] The utility model relates to air compression energy storage technical field, concretely relates to a kind of steel lining stiffening ring of compressed air energy storage power station gas storage chamber. BACKGROUND

[0002] Compressed air energy storage power station refers to the surplus electric energy of electric power system low capacity load is compressed air is stored in underground cavern, in the peak period of power grid load release compressed air and drive steam turbine generation of energy storage mode.Its application prospect is only next to pumped storage.

[0003] In the process of gas injection energy storage and gas release power generation, the temperature of gas storage increases and drops sharply;The internal pressure of steel sealing layer changes greatly with gas injection energy storage and gas release power generation.Variable temperature and variable pressure have great influence on the stability of concrete lining structure and steel sealing layer.In addition, compressed air energy storage leads to the internal pressure of chamber to decrease in the process of gas release power generation, which further leads to the gap between concrete lining and chamber.Therefore, it is necessary to provide a kind of steel lining stiffening ring of compressed air energy storage power station gas storage chamber to enhance the stability of chamber operation and solve the problems existing in the prior art. SUMMARY

[0004] The utility model aims at overcoming the problems in the prior art, and provides a kind of steel lining stiffening ring of compressed air energy storage power station gas storage chamber, which enhances the stability of connection between concrete lining structure and steel sealing layer.

[0005] The utility model provides a kind of steel lining stiffening ring of compressed air energy storage power station gas storage chamber, the stiffening ring is set on steel sealing layer, a plurality of bionic buckles are uniformly distributed on the outer circumferential wall of the stiffening ring, a plurality of the bionic buckles are used to embed in concrete lining, the longitudinal section of the bionic buckle is oval, the long axis of the oval of the bionic buckle longitudinal section is a, the short axis is b, and a:b=2.1~2.3:1.

[0006] Preferably, a plurality of the bionic buckles are welded on the stiffening ring.

[0007] Preferably, the end of the bionic buckle is connected with the stiffening ring through arc-shaped support, and the connection between the arc-shaped support and the bionic buckle has a concave transition arc, and the transition arc is a part of the same oval as the oval cross section of the bionic buckle.

[0008] Preferably, the bionic buckle and the arc-shaped support are integrally formed, and the arc-shaped support and the stiffening ring are integrally formed.

[0009] Preferably, the angle between the stress contact point of the concrete lining and the steel sealing layer and the long side is θ when stretched, and θ is 32°~38°.

[0010] Preferably, the stiffening ring is made of steel.

[0011] Preferably, the steel sealing layer is welded by a plurality of steel sleeves, and each steel sleeve is sleeved with the stiffening ring.

[0012] Compared with the prior art, the utility model has the advantages of:

[0013] Through the bionic technology, the bionic buckle is designed, in the inflation energy storage process, in the case of unequal strength and elastic modulus, when the oval section a:b is 2.2:1, the compression resistance of the bionic buckle is best, the stress of the steel sealing layer is 10MPa, and the ground stress is 3.8MPa, obviously, the stress of the steel sealing layer is greater than the ground stress, and the increase of the temperature of the steel sealing layer, all of which make the concrete lining in the compression state, the bionic buckle is designed through the bionic technology, the stress of the concrete lining is reduced through the optimization of the contact configuration between the concrete lining and the steel sealing layer, and the damage of the concrete lining caused by the increase of the chamber air pressure and temperature is avoided.

[0014] In the inflation energy storage process, in the case of unequal strength and elastic modulus, when the oval section a:b is 2.2:1, the compression resistance of the bionic buckle is best, the stress of the steel sealing layer is 10MPa, and the ground stress is 3.8MPa, obviously, the stress of the steel sealing layer is greater than the ground stress, and the increase of the temperature of the steel sealing layer, all of which make the concrete lining in the compression state, the bionic buckle is designed through the bionic technology, the stress of the concrete lining is reduced through the optimization of the contact configuration between the concrete lining and the steel sealing layer, and the damage of the concrete lining caused by the increase of the chamber air pressure and temperature is avoided. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is the cooperation structure schematic view of the steel sealing layer and the concrete lining of the utility model.

[0016] Figure 2 It is the cooperation structure schematic view of the steel sealing layer, the stiffening ring and the bionic buckle of the utility model.

[0017] Figure 3 It is the cooperation structure schematic view of the steel sealing layer, the stiffening ring and the bionic buckle of the utility model.

[0018] Figure 4 It is the cooperation structure schematic view of the steel sealing layer, the stiffening ring and the bionic buckle of the utility model.

[0019] Figure 5 It is the cooperation structure schematic view of the steel sealing layer, the stiffening ring and the bionic buckle of the utility model.

[0020] The drawing sign explanation: 1, steel sealing layer;2, concrete lining;3, stiffening ring;4, bionic buckle;5, spherical head;6, joint section. DETAILED DESCRIPTION

[0021] The accompanying drawings are used to better illustrate the present application Figures 1-5 In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme of the embodiments of the present application will be described clearly and completely below with reference to the drawings of the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the described embodiments of the present application, all other embodiments obtained by those of ordinary skill in the art without any creative effort fall within the scope of the present application, unless otherwise defined, and the technical terms or scientific terms used herein should be understood as the usual meanings by those of ordinary skill in the art to which the present application belongs.

[0022] The terms "first", "second", and similar terms used in the patent application specification and claims of the present application do not represent any order, quantity or importance, but are only used to distinguish different components, and the terms "comprise" or "include" and similar terms mean that the elements or objects before the terms cover the elements or objects listed after the terms and their equivalents, without excluding other elements or objects. "In", "out", "up", "down", "far", "near", "front", "back" and the like are only used to represent relative positional relationships, and when the absolute positions of the described objects are changed, the relative positional relationships may also be changed accordingly. The drawings in the present application are not strictly drawn according to the actual proportions, and the specific sizes and quantities of the various structures can be determined according to actual needs. The drawings described in the present application are only structural schematic diagrams.

[0023] Insects have developed organ systems that are adapted to their living environment during long-term evolution. These organ systems have unique structures and excellent functions. It is observed that beetles often hide under rocks or squeeze into tree bark as shelters to avoid being crushed. They have the ability to resist external loads without damaging internal organs. The locking structure of the beetle lymph cavity enables it to maintain its structure stable under large pressure and complex external changes. The present application simulates the connection of the stiffening ring 3 to the connection point by using bionic buckles 4, thereby increasing the sealing property of the steel sealing layer 1 and the concrete lining 2 in the gas storage chamber of the compressed gas energy storage power station.

[0024] The present application provides a kind of stiffening ring of steel lining of compressed gas energy storage power station gas storage chamber, as shown in Figures 1-5 The stiffening ring 3 is sleeved on the steel sealing layer 1, and the outer peripheral wall of the stiffening ring 3 is uniformly distributed with a plurality of bionic buckles 4. The plurality of bionic buckles 4 are used to embed into the concrete lining 2. The longitudinal section of the bionic buckle 4 is in an elliptical shape. The major axis of the longitudinal section ellipse of the bionic buckle 4 is a, and the minor axis is b, and a:b=2.1~2.3:1.

[0025] In this embodiment, through bionic technology, the bionic buckle 4 is designed, in the process of inflating energy storage, in the case of unequal strength and elastic modulus, when the oval section a:b is 2.2:1, the bionic buckle can bear the best compression resistance, the compressive stress of the steel sealing layer 1 reaches 10MPa, and the ground stress is 3.8MPa, obviously the compressive stress of the steel sealing layer 1 is greater than the ground stress, and the temperature rise of the steel sealing layer 1, which will make the concrete lining 2 in a compressed state, the bionic buckle 4 is designed through bionic technology, the contact configuration between the concrete lining 2 and the steel sealing layer 1 is optimized, the stress of the concrete lining 2 is reduced, and damage of the concrete lining 2 caused by the increase of the chamber air pressure and temperature is avoided.

[0026] In the process of discharging power generation, in the case of unequal strength and elastic modulus, when the oval section a:b is 2.2:1, the bionic buckle can bear the best tensile capacity, the compressive stress of the steel sealing layer 1 is reduced to 1MPa, and the ground stress is 3.8MPa, obviously the stress of the steel sealing layer 1 is less than the ground stress, and the sudden drop of the temperature of the steel sealing layer 1 will lead to the shrinkage deformation of the steel sealing layer 1 and the separation from the concrete lining 2, at this time, the concrete lining 2 is in a tensile state, and the best contact angle 35° formed by the stress contact point and the long side can maximize the reduction of the compressive stress of the steel sealing layer 1, which plays a fixed role on the steel sealing layer 1, so that the steel sealing layer 1 and the concrete lining 2 will not be separated.

[0027] Preferably, as shown in Figures 1-5 , the angle θ between the line connecting the center point of the ellipse where the transition arc is located and the center point of the bionic buckle 4 and the long axis a of the ellipse is 32°-38°, the ratio of the long side to the short side is r, and r=a:b.

[0028] ;

[0029] Wherein the long axis of the ellipse is a, the short axis of the ellipse is b, and the thickness of the stiffening ring is t.

[0030] The application can eliminate the damage of the concrete lining 2 caused by the stress concentration; in the process of discharging power generation in the gas storage chamber, the steel sealing layer 1 may be separated from the concrete lining 2 due to the decrease of the internal pressure and the shrinkage caused by the temperature drop, the application can provide a certain tensile strength, all contact surfaces of the concrete lining 2 and the steel sealing layer 1 are stressed in compression, the contact angle θ between the stress contact point of the concrete lining 2 and the steel sealing layer 1 and the long side is set to 35° in tension, in the case of unequal strength and elastic modulus, when θ is 35°, there will be higher connection strength, and the sealing property of the steel sealing layer 1 and the concrete lining 2 is increased.

[0031] Preferably, as shown in Figure 5 , the bionic buckle 4 is welded on the stiffening ring, the bionic buckle 4 and the arc-shaped support are integrally formed, and the arc-shaped support and the stiffening ring 3 are integrally formed.

[0032] In this embodiment, the bionic buckle 4 can be directly welded to the stiffening ring 3 to increase the connection stability of the bionic buckle 4, or the bionic buckle 4 and the arc-shaped support can be integrally formed, and the arc-shaped support and the stiffening ring 3 can be integrally formed to increase the connection stability of the bionic buckle 4.

[0033] Preferred, such as Figure 5 As shown, the end of the bionic buckle 4 is connected to the stiffening ring 3 through an arc-shaped support, and the connection between the arc-shaped support and the bionic buckle 4 has a concave transition arc, which is a part of an ellipse with the same elliptical cross-section as the bionic buckle 4.

[0034] The concrete between the stiffening rings 3 has an inward concave arc. The ratio of the minimum cross-sectional width of the concrete to the thickness of the stiffening ring steel plate is approximately 1:200, which is consistent with the tensile strength ratio of the concrete and the steel, thereby further improving the stability between the steel sealing layer 1 and the concrete lining 2.

[0035] Preferred, such as Figure 1 As shown, the steel sealing layer 1 is welded from several steel sleeves, and each steel sleeve is fitted with a stiffening ring 3, which is made of steel.

[0036] The stiffening ring 3 is made of steel to improve the connection stability between the steel sealing layer 1 and the concrete lining 2.

[0037] Preferred, such as Figure 1 As shown, each steel sleeve is provided with several fitting sections 6, and the steel sealing layer 11 is fixedly fitted with spherical heads 5 at both horizontal ends.

[0038] When welding several steel sleeves from both ends toward the middle, there will always be some error when welding to the roadway. At this time, the length of the middle steel sleeve is adjusted by the set fitting section 6, thereby eliminating the error. Several steel sleeves are welded into a complete steel sealing layer 1, and then spherical end caps 5 are put on both ends of the steel sealing layer 1.

[0039] The method of using the steel lining stiffening ring of the gas storage chamber in this utility model of compressed air energy storage power station is as follows:

[0040] Several steel sleeves are welded from both ends toward the middle. There will always be some error when welding to the roadway. At this time, the length of the middle steel sleeve is adjusted by the set fitting section 6, thereby eliminating the error. Several steel sleeves are welded into a complete steel sealing layer 1, and then spherical end caps 5 are put on both ends of the steel sealing layer 1.

[0041] A stiffening ring 3 is fitted onto the steel sleeve, and several bionic buckles 4 are welded evenly along the axis of the steel sleeve. All the bionic buckles 4 are connected by bionic buckles. Then, cement is poured to form a concrete lining 2, and the bionic buckles 4 are embedded in the concrete lining 2.

[0042] In the process of air storage energy, the compressive stress of the steel sealing layer 1 reaches 10MPa, and the ground stress is 3.8MPa, obviously the compressive stress of the steel sealing layer 1 is greater than the ground stress, and the temperature rise of the steel sealing layer 1, all of which will make the concrete lining 2 in a state of compression, the bionic buckle 4 reduces the stress of the concrete lining 2 by optimizing the contact configuration between the concrete lining 2 and the steel sealing layer 1, and avoids the damage of the concrete lining 2 caused by the increase of the chamber air pressure and temperature.

[0043] In the process of air storage energy, the compressive stress of the steel sealing layer 1 reaches 10MPa, and the ground stress is 3.8MPa, obviously the compressive stress of the steel sealing layer 1 is greater than the ground stress, and the temperature rise of the steel sealing layer 1, all of which will make the concrete lining 2 in a state of compression, the bionic buckle 4 reduces the stress of the concrete lining 2 by optimizing the contact configuration between the concrete lining 2 and the steel sealing layer 1, and avoids the damage of the concrete lining 2 caused by the increase of the chamber air pressure and temperature.

[0044] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A ring for reinforcing the steel lining of a gas storage cavern of a compressed air energy storage power plant, characterized in that The stiffening ring (3) is sleeved on the steel sealing layer (1), a plurality of bionic buckles (4) are uniformly distributed on the outer peripheral wall of the stiffening ring (3), the bionic buckles (4) are used for embedding into the concrete lining (2), the longitudinal section of the bionic buckle (4) is oval, the long axis of the oval of the bionic buckle (4) is a, the short axis is b, and a:b = 2.1~2.3:

1.

2. A ring for reinforcing the steel lining of a gas storage cavern for a compressed air energy storage plant according to claim 1, characterized in that A plurality of bionic buckles (4) are welded on the stiffening ring (3).

3. A ring for reinforcing the steel lining of a gas storage cavern for a compressed air energy storage plant according to claim 1, characterized in that The end of the bionic buckle (4) is connected with the stiffening ring (3) through an arc-shaped support, and the connection between the arc-shaped support and the bionic buckle (4) has a concave transition arc, and the transition arc is part of an ellipse which is the same as the oval cross section of the bionic buckle (4).

4. A ring for reinforcing the steel lining of a gas storage cavern for a compressed air energy storage plant according to claim 3, characterized in that The bionic buckle (4) and the arc-shaped support are integrally formed, and the arc-shaped support and the stiffening ring (3) are integrally formed.

5. A ring for reinforcing the steel lining of a gas storage cavern for a compressed air energy storage plant according to claim 3, characterized in that The angle θ between the line connecting the center point of the ellipse where the transition arc is located and the center point of the bionic buckle (4) and the long axis a of the ellipse is 32°~38°.

6. A ring for reinforcing the steel lining of a gas storage cavern for a compressed air energy storage plant according to claim 1, characterized in that The stiffening ring (3) is made of steel material.

7. A ring for reinforcing the steel lining of a gas storage cavern for a compressed air energy storage plant according to claim 1, characterized in that The steel sealing layer (1) is welded by a plurality of steel sleeve segments, and each steel sleeve segment is sleeved with the stiffening ring (3).

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