Compressed air energy storage tank and method of manufacture

Abstract

The application provides a compressed air energy storage tank and a manufacturing method thereof, and belongs to the technical field of air energy storage. The application solves the problems of small gas storage capacity, low efficiency and safety hazards of metal tank explosion fragments hurting people, and the like. The application comprises a composite material tank cylinder, tank heads, a gas storage inner tank and air inlet and outlet holes. The tank heads are installed at both ends of the composite material tank cylinder. The gas storage inner tank is arranged in the tank formed by the composite material tank cylinder and the tank heads. The tank heads are provided with the air inlet and outlet holes, a drain valve hole and a safety valve hole. The tank heads are installed in a concrete support pier. The gas storage inner tank is made of plastic or rubber. The application is mainly used for compressed air storage and release.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of air energy storage, and particularly relates to a compressed air energy storage tank and a manufacturing method thereof. BACKGROUND

[0002] The compressed air tank is an important device in the air energy storage system, which functions to store and release compressed air. Currently, metal tanks are mostly used for compressed air energy storage. However, a single metal tank has the problems of small gas storage capacity, low efficiency, and safety hazards of metal fragments caused by accidental explosion of the metal tank. SUMMARY

[0003] Therefore, the present application aims to provide a compressed air energy storage tank and a manufacturing method thereof to solve the problems of small gas storage capacity, low efficiency, and safety hazards of metal fragments caused by accidental explosion of the metal tank.

[0004] To achieve the above-mentioned purpose, the present application adopts the following technical solutions:

[0005] The compressed air energy storage tank comprises a composite tank cylinder, a tank head, a gas storage inner tank, and an air inlet and outlet hole. The tank head is installed at both ends of the composite tank cylinder. The gas storage inner tank is arranged in the tank formed by the composite tank cylinder and the tank head. The tank head is installed in a concrete pier. The gas storage inner tank is made of plastic or rubber.

[0006] Further, both ends of the composite tank cylinder are provided with composite flanges. The end face of the tank head is provided with a flange. The composite flange is connected with the flange of the end face of the tank head.

[0007] Further, the tank head is provided with a drain pipe. The drain pipe is provided with a drain valve. The drain pipe is communicated with the gas storage inner tank.

[0008] Further, the tank head is provided with a safety pipe. The safety pipe is provided with a safety valve. The safety pipe is communicated with the gas storage inner tank.

[0009] Further, a plurality of support frames are arranged in the gas storage inner tank of the composite tank cylinder.

[0010] Further, the shape of the tank head is spherical, oval, or circular plate-shaped.

[0011] Further, a plurality of compressed air energy storage tanks are provided. The plurality of compressed air energy storage tanks are arranged in series.

[0012] Further, the compressed air energy storage tank is provided with a plurality of compressed air energy storage tanks which are connected in parallel through U-shaped pipes.

[0013] A manufacturing method of a compressed air energy storage tank, comprising the following steps:

[0014] Step 1: firstly, the composite tank cylinder is formed by a fiber winding process;

[0015] Step 2: the metal is processed into a tank head;

[0016] Step 3: the inlet and outlet holes, the safety pipe and the drain pipe are all made of metal materials, and then the inlet and outlet holes are welded to the tank head, and the safety pipe and the drain pipe are welded to the side surface of the tank head;

[0017] Step 4: the composite tank cylinder and the tank head are connected through flanges;

[0018] Step 5: the gas storage inner tank is placed on the inner wall of the tank body formed by the composite tank cylinder and the tank head;

[0019] Step 6: the tank body is fixed by pouring concrete piers.

[0020] Compared with the prior art, the beneficial effects of the present application are:

[0021] 1. The composite tank cylinder of the present application is formed by a fiber winding process, which is easy to form a large-diameter cylinder (4-6 meters) and has low forming cost.

[0022] 2. The composite tank cylinder of the present application uses continuous fiber reinforced thermosetting resin, which improves the pressure resistance and corrosion resistance of the cylinder, and the fiber reinforced composite tank pressure failure is generally in the form of leakage and gas release, which can avoid the safety hidden trouble problem caused by cylinder explosion.

[0023] 3. The concrete piers are arranged on both sides of the tank (acting on both sides of the head), which is used to resist the axial force generated by the compressed air tank, and the manufacturing cost of the tank is reduced (if the tank is simply made of composite material, a large amount of composite material will be increased to resist the axial force generated by the tank).

[0024] 4. The plastic (or rubber) inner tank is connected with the outer tank body in contact instead of adhesive connection, the outer tank body plays a pressure bearing role, and the plastic (or rubber) inner tank plays a sealing and anti-seepage role.

[0025] 5. The compressed air energy storage tank of the present application can be connected in series or in parallel, and the gas storage capacity can be increased. BRIEF DESCRIPTION OF DRAWINGS

[0026] The accompanying drawings, which form a part of this application, are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification. The illustrations are shown schematically in the drawings of the preferred embodiments of the application and the specification together serve to explain the application, and do not limit the application in any way. In the drawings:

[0027] Figure 1 A three-dimensional schematic view of a compressed air energy storage tank according to the present application;

[0028] Figure 2 A sectional view of a compressed air energy storage tank according to the present application;

[0029] Figure 3 A fixed schematic view of a compressed air energy storage tank according to the present application;

[0030] Figure 4 A schematic view of a support frame installation;

[0031] Figure 5 A schematic view of a plurality of compressed air energy storage tanks in series;

[0032] Figure 6 A schematic view of a plurality of compressed air energy storage tanks in parallel;

[0033] 1 - composite material tank cylinder, 1-1: composite material flange, 2 - tank head, 2-1: head flange, 3 - gas storage inner tank, 4 - inlet and exhaust hole, 5 - safety pipe, 6 - drain pipe, 7 - concrete support pier, 8 - support frame. DETAILED DESCRIPTION

[0034] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict, and the described embodiments are only part of the embodiments of the present application, not all the embodiments.

[0035] Reference is made to Figures 1-4 In order to illustrate the present embodiment, a compressed air energy storage tank includes a composite material tank cylinder 1, a tank head 2, a gas storage inner tank 3, and an inlet and exhaust hole 4. The composite material tank cylinder 1 is provided with a tank head 2 at both ends. The gas storage inner tank 3 is installed in the tank composed of the composite material tank cylinder 1 and the tank head 2. The tank head 2 is provided with an inlet and exhaust hole 4 at the outer end. The tank head 2 is installed in and integrated with the concrete support pier 7. The material of the gas storage inner tank 3 is plastic or rubber.

[0036] The composite material storage tank cylinder is formed by fiber winding process, and continuous fiber reinforced thermosetting resin is used to improve the pressure resistance and corrosion resistance of the cylinder. The pressure failure of the fiber reinforced composite material storage tank is generally leakage and gas release, which can avoid the safety hidden trouble caused by cylinder explosion.

[0037] Further, the composite material storage tank cylinder 1 is provided with a composite material flange 1-1 at both ends, and the storage tank head 2 is provided with a head flange 2-1 at the inner end, and the composite material flange 1-1 is connected with the head flange 2-1.

[0038] Further, the storage tank head 2 is provided with a drain pipe 6, the drain pipe 6 is provided with a drain valve, and the drain pipe 6 is communicated with the gas storage inner tank 3. Because water vapor is generated during the charging and discharging of compressed air, the water vapor becomes water after liquefaction, and then the drain valve is opened to discharge the water from the drain pipe 6.

[0039] Further, the storage tank head 2 is provided with a safety pipe 5, the safety pipe 5 is provided with a safety valve, and the safety pipe 5 is communicated with the gas storage inner tank 3. If the gas pressure is too large during storage, the safety valve can ensure the stability of the gas pressure in the composite material storage tank cylinder 1.

[0040] Further, the gas storage inner tank 3 is provided with a plurality of support frames 8, and the plurality of support frames 8 are connected in series through a center shaft. The support frame 8 ensures the stability of the gas storage inner tank 3 in the composite material storage tank cylinder 1.

[0041] Further, the compressed air energy storage tank is provided with a plurality of compressed air energy storage tanks, and the plurality of compressed air energy storage tanks are connected in series. The plurality of compressed air energy storage tanks can also be connected in parallel through a U-shaped pipe. By providing a plurality of compressed air energy storage tanks, the gas storage capacity can be increased.

[0042] Further, a manufacturing method of a compressed air energy storage tank comprises the following steps:

[0043] Step 1: first, the composite material storage tank cylinder 1 is formed by fiber winding process;

[0044] Step 2: the metal is processed into a storage tank head 2;

[0045] Step 3: the inlet and outlet holes 4, the safety pipe 5 and the drain pipe 6 are all made of metal materials, and then the inlet and outlet holes 4 are welded to the storage tank head 2, and the safety pipe 5 and the drain pipe 6 are welded to the side surface of the storage tank head 2;

[0046] Step 4: the composite material storage tank cylinder 1 is connected with the storage tank head 2 through the flange;

[0047] Step 5: the gas storage inner tank 3 is placed on the inner wall of the tank formed by the composite material storage tank cylinder 1 and the storage tank head 2;

[0048] Step 6: The tank is fixed by pouring concrete into the concrete support 7.

[0049] The embodiments disclosed above are only used to illustrate the present application. The embodiments do not describe all of the details and do not limit the present application to the specific embodiments. According to the content of the specification, many modifications and changes can be made. The specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present application, so that those skilled in the art can well understand and utilize the present application.

Claims

1. A compressed air energy storage tank characterized by: The utility model provides a kind of compressed air energy storage tank, including composite material storage tank cylinder (1), storage tank head (2), gas storage inner tank (3) and inlet and exhaust hole (4), both ends of the composite material storage tank cylinder (1) are equipped with storage tank head (2), the gas storage inner tank (3) is arranged in the storage tank formed by composite material storage tank cylinder (1) and storage tank head (2), and the storage tank head (2) is equipped with inlet and exhaust hole (4) and safety valve hole, and the storage tank head (2) is installed in concrete pier (7).

2. A compressed air energy storage tank according to claim 1, wherein: The gas storage inner tank (3) is made of plastic or rubber.

3. A compressed air energy storage tank according to claim 1, wherein: The both ends of the composite material storage tank cylinder (1) are provided with composite material flange (1-1), and the end face of the storage tank head (2) is provided with head flange (2-1), and the composite material flange (1-1) is connected with the head flange (2-1) of the end face of the storage tank head.

4. A compressed air energy storage tank according to claim 1, wherein: The storage tank head (2) is provided with a drain pipe (6), and the drain pipe (6) is provided with a drain valve, and the drain pipe (6) communicates with the gas storage inner tank (3).

5. A compressed air energy storage tank according to claim 1, wherein: The storage tank head (2) is provided with a safety pipe (5), and the safety pipe (5) is provided with a safety valve, and the safety pipe (5) communicates with the gas storage inner tank (3).

6. A compressed air energy storage tank according to claim 1, wherein: The gas storage inner tank (3) is provided with a plurality of support frames (8).

7. A compressed air energy storage tank according to claim 1, wherein: The storage tank head (2) is spherical, oval or circular in shape.

8. A compressed air energy storage tank according to claim 1, wherein: The compressed air energy storage tank is provided with a plurality of compressed air energy storage tanks, and the plurality of compressed air energy storage tanks are connected in series.

9. A compressed air energy storage tank according to claim 1, wherein: The compressed air energy storage tank is provided with a plurality of compressed air energy storage tanks, and the plurality of compressed air energy storage tanks are connected in parallel through a U-shaped pipe.

10. A method of manufacturing a compressed air energy storage tank as claimed in any one of claims 1, 3, 4 or 5, characterised by: It comprises the following steps: Step 1: first, the composite material storage tank cylinder (1) is formed by fiber winding process; Step 2: the metal is processed into a storage tank head (2); Step 3: the inlet and exhaust hole (4), the safety pipe (5) and the drain pipe (6) are all made of metal material, and then the inlet and exhaust hole (4) is welded to the storage tank head (2), and the safety pipe (5) and the drain pipe (6) are welded to the storage tank head (2); Step 4: the composite material storage tank cylinder (1) is connected with the storage tank head (2) through the flange; Step 5: the gas storage inner tank (3) is placed on the inner wall of the tank formed by the composite material storage tank cylinder (1) and the storage tank head (2); Step 6: the tank is fixed by pouring concrete pier (7) with concrete.

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