Constant-pressure air supply device
By designing a constant pressure supply device including gas storage tanks, pistons, memory contracts, and heating parts, the problem of being limited by the application scenario of the existing underwater constant pressure air supply device is solved, and the heights in various environments have been realized. Pressing gas output improves the flexibility and efficiency of energy storage technology.
Patent Information
- Application Number
- CN202420895785.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-26
- Publication Date
- 2025-01-28
- Estimated Expiration
- 2034-04-26
AI Technical Summary
Existing constant pressure gas supply devices mostly use underwater pressurization, which leads to limited application scenarios and is difficult to adapt to the needs of various environments.
Design a constant pressure supply device including gas storage tanks, pistons, memory contracts and heating parts. Memory alloy parts have thrust when higher than the first temperature. The Pistons have heated the memory alloy components through heating parts to achieve constant control of gas storage and gas pressure.
This device does not require an underwater environment, with a wide range of application scenarios, can stabilize the constant pressure gas in a variety of environments, and improves the flexibility and efficiency of energy storage technology.
Smart Images
Figure CN222417085U_ABST
Abstract
Description
Technical Field
[0001] The present disclosure relates to the field of energy storage technology, and in particular to a constant pressure air supply device. Background Art
[0002] Due to the volatility and intermittency of new energy sources such as wind power and photovoltaics, and with the rapid development of clean energy, there is an urgent need for large-scale energy storage technology.
[0003] Existing constant-pressure air supply devices mostly use a mechanical pressurizing device that is arranged underwater to maintain constant pressure through water pressure. This underwater pressurizing method limits the application scenarios of the constant-pressure air supply device. Utility Model Content
[0004] In order to solve the above technical problems or at least partially solve the above technical problems, the present disclosure provides a constant pressure air supply device.
[0005] The present application discloses a constant-pressure air supply device, which may include: an air storage tank, which includes a peripheral wall, a bottom wall and a top cover, the bottom wall and the top cover are arranged opposite to each other, and a gas delivery port is arranged on the top cover; a piston part, the piston part is located in the air storage tank and is sealed with the peripheral wall, the piston part divides the internal space of the air storage tank into a gas storage chamber and a driving chamber, the gas delivery port is connected with the gas storage chamber, and the piston part is slidable in the direction from the top cover to the bottom wall; a memory alloy part, the memory alloy part is located in the driving chamber, one end of the memory alloy part abuts against the piston part, and the other end of the memory alloy part abuts against the bottom wall, the memory alloy part has a first state in an environment higher than the first temperature, and when the memory alloy part is in the first state, it can apply a thrust toward the gas delivery port to the piston part; a heating part, the heating part is located in the driving chamber, and the heating part is used to heat the memory alloy part.
[0006] In this way, the constant pressure air supply device provided by the present application has no special requirements for the use environment compared to the underwater constant pressure air supply device and has a wide range of application scenarios.
[0007] In some embodiments of the present application, the heating element includes a heating ring, which is arranged around the circumferential outer side of the memory alloy element.
[0008] In some embodiments of the present application, the heating element further includes a track and an electrically controlled pulley. The track is arranged on the inner surface of the peripheral wall. The track extends in the direction from the bottom wall toward the top cover. The heating ring slides with the track through the electrically controlled pulley.
[0009] In some embodiments of the present application, the heating element further includes a connecting rod, one end of which is connected to the heating ring, and the other end of which is connected to the electrically controlled pulley.
[0010] In some embodiments of the present application, the constant pressure gas supply device further includes: a pressure sensor, and the pressure sensor is located at the gas delivery port.
[0011] In some embodiments of the present application, the constant pressure air supply device further includes: a heating source, the heating source is located outside the gas storage tank; and a heat pipe, the heating source and the heating element are connected through the heat pipe.
[0012] In some embodiments of the present application, the constant pressure air supply device further includes: a pump, which is disposed on the heat conduction pipe.
[0013] In some embodiments of the present application, the constant pressure air supply device further includes: a valve, which is arranged on the heat conduction pipe.
[0014] In some embodiments of the present application, the heat pipe includes an input pipe and an output pipe, the input pipe is used to transport the heat storage medium in the heating source to the heating element, and the output pipe is used to send the heat storage medium flowing through the heating element back to the heating source.
[0015] In some embodiments of the present application, the constant pressure air supply device further includes: a controller, which is electrically connected to the electric control pulley. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and, together with the description, serve to explain the principles of the present disclosure.
[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.
[0018] Figure 1 A schematic diagram of the application of the constant pressure air supply device provided in some embodiments of the present application;
[0019] Figure 2 for Figure 1 A schematic diagram of a constant pressure gas supply device shown in ;
[0020] Figure 3 A schematic diagram of the application of the constant pressure air supply device provided in some other embodiments of the present application;
[0021] Figure 4 for Figure 3 Schematic diagram of the constant pressure gas supply device shown in .
[0022] Reference numerals:
[0023] 100. Constant pressure air supply device;
[0024] 110, gas storage tank; 101, gas storage chamber; 102, driving chamber; 111, peripheral wall; 112, bottom wall; 113, top cover; 1131, gas delivery port;
[0025] 120, piston part;
[0026] 130. Memory alloy parts;
[0027] 141. Heating ring; 142. Track; 143. Electric-controlled pulley; 144. Connecting rod;
[0028] 150. Pressure sensor;
[0029] 160. Heating source; 161. Heating tube;
[0030] 171, first valve; 172, second valve; 173, third valve; 174, fourth valve; 175, pump; 176, input pipe; 177, output pipe;
[0031] 200, expander;
[0032] 300. Compressor;
[0033] 400. Auxiliary heating source. DETAILED DESCRIPTION
[0034] In order to more clearly understand the above-mentioned objectives, features and advantages of the present disclosure, the scheme of the present disclosure will be further described below. It should be noted that the embodiments of the present disclosure and the features in the embodiments can be combined with each other without conflict.
[0035] In the description of the embodiments of the present application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, "connection" can be a detachable connection or a non-detachable connection; it can be a direct connection or an indirect connection through an intermediate medium. Among them, "fixed connection" means that the two are connected to each other and the relative position relationship after the connection remains unchanged. In addition, the directional terms mentioned in the embodiments of the present application, such as "inside", "outside", etc., are only references to the directions of the accompanying drawings. Therefore, the directional terms used are for better and clearer explanation and understanding of the embodiments of the present application, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present application.
[0036] In the following description, many specific details are set forth to facilitate a full understanding of the present disclosure, but the present disclosure may also be implemented in other ways different from those described herein; it is obvious that the embodiments in the specification are only part of the embodiments of the present disclosure, rather than all of the embodiments.
[0037] At present, due to the volatility and intermittency of new energy such as wind power and photovoltaics, and with the rapid development of clean energy, there is an urgent need for large-scale energy storage technology.
[0038] Compressed gas energy storage is a large-scale energy storage method with great potential, but it is currently facing a series of problems such as high cost and low efficiency. The cost of the gas storage system accounts for more than 30% of the construction cost of a compressed gas energy storage power station, and there is a problem of pressure changes in the gas storage system during storage and release. The non-constant pressure gas storage system is not conducive to improving the efficiency of the compressed gas energy storage power station. Therefore, the constant pressure gas delivery device is the key to the construction of a compressed gas energy storage power station.
[0039] In the prior art, an underwater constant pressure air supply device is generally used. Specifically, it is a flexible airbag set underwater. The airbag is set underwater and the pressure inside the airbag is kept constant by the pressure of the water. This method has limited application scenarios and must use water pressure underwater. In addition, the location of the equipment underwater is not conducive to subsequent maintenance.
[0040] To solve the above technical problems, please refer to Figures 1 to 4 The present application provides a constant-pressure air supply device 100, which has a wide range of application scenarios and no special requirements.
[0041] For details, please refer to Figure 2 The constant pressure gas supply device 100 may include a gas storage tank 110, a piston portion 120, a memory alloy component 130 and a heating component.
[0042] Among them, the gas storage tank 110 can be made of metal, resin, plastic, rubber, carbon fiber, or composite material; specifically, it can be selected according to the type of gas in the gas storage tank 110. The gas storage tank 110 can include a peripheral wall 111, a bottom wall 112 and a top cover 113. The peripheral wall 111, the bottom wall 112 and the top cover 113 define the internal space of the gas storage tank 110 and isolate the internal space of the gas storage tank 110 from the outside world. The bottom wall 112 and the top cover 113 are arranged opposite to each other. One end of the peripheral wall 111 is connected to the bottom wall 112, and the other end is connected to the top cover 113, and is arranged around the bottom wall 112 and the top cover 113. A gas transmission port 1131 is provided on the top cover 113. The gas transmission port 1131 is used to transport and input gas between the gas storage tank 110 and the outside world.
[0043] Please continue reading Figure 2 The gas delivery port 1131 may include a conveying port and an input port, or the gas delivery port 1131 may serve as an input port while serving as a conveying port. The conveying port is used to convey the gas inside the gas storage tank 110 to the expander 200 outside the gas storage tank 110 to drive the generator to generate electricity; the input port is used to input the high-pressure gas compressed by the compressor 300 outside the gas storage tank 110 into the gas storage tank 110.
[0044] The piston part 120 is located in the gas storage tank 110 and is sealed to the peripheral wall 111. The piston part 120 divides the internal space of the gas storage tank 110 into a gas storage chamber 101 and a driving chamber 102. The gas delivery port 1131 is connected to the gas storage chamber 101. The piston part 120 can slide in the direction from the top cover 113 to the bottom wall 112. In other words, please refer to Figure 3 and Figure 4 The volumes of the gas storage chamber 101 and the driving chamber 102 can be changed by sliding the piston portion 120. Specifically, the cross-sectional shape of the piston portion 120 is adapted to the cross-sectional shape of the gas storage tank 110. For example, if the cross-sectional shape of the gas storage tank 110 is formed into a circle, then the piston portion 120 is formed into a disc.
[0045] Memory alloy is a martensitic phase change alloy with regular atomic arrangement and volume change of less than 0.5%. This alloy will deform under the action of external force, and when the external force is removed, it can restore its original shape under certain temperature conditions.
[0046] The memory alloy component 130 provided in the present application is made of a memory alloy material. The memory alloy component 130 is located in the driving chamber 102. One end of the memory alloy component 130 abuts against the piston portion 120, and the other end of the memory alloy component 130 abuts against the bottom wall 112. The memory alloy component 130 has a first state in an environment higher than the first temperature. When the memory alloy is in the first state, it can apply a thrust toward the gas output port 1131 to the piston portion 120, and then through the deformation of the memory alloy component 130, the volume of the gas storage chamber 101 is compressed, thereby changing the gas pressure in the gas storage chamber 101, so that the gas pressure of the gas storage chamber 101 is constant during and after the gas output.
[0047] Specifically, the memory alloy 130 is plastic in an environment below the first temperature, that is, it can be stretched or compressed, wherein the length of the memory alloy 130 in the first state is greater than the shortest length of the memory alloy 130 below the first temperature.
[0048] For example, the shortest length that the memory alloy member 130 can be compressed to below the first temperature is the compression length (eg Figure 2 The length of the memory alloy member 130 shown in FIG. 1 ), the length of the memory alloy member 130 in the first state is the initial length (eg Figure 4 The length of the memory alloy member 130 shown in FIG. 1 ), the initial length is greater than the compressed length.
[0049] For example, the memory alloy part 130 is formed by a plurality of V-shaped rods connected in sequence. When the memory alloy part 130 is in a first state, the angle of the V-shaped rod is a first angle. When the memory alloy part 130 is under a first temperature and the gas storage tank 110 is in a full state, the angle of the V-shaped rod is a second angle. The first angle is greater than the second angle.
[0050] In some embodiments of the present application, the initial length of the memory alloy member 130 is greater than the length of the gas storage tank 110 .
[0051] The heating element is located in the driving cavity 102 and is used to heat the memory alloy element 130. Thus, by setting the heating element, the memory alloy element 130 can be heated so that the ambient temperature of the memory alloy element 130 is greater than the first temperature, so that the memory alloy element 130 returns to the first state.
[0052] In summary, please refer to Figure 2 and Figure 4 , taking the case where the gas storage tank 110 is fully filled with gas as an example, the gas storage tank 110 then delivers gas to the external expander 200, the gas in the gas storage chamber 101 is reduced, the gas pressure drops, and the heating element heats the memory alloy member 130, so that the memory alloy member 130 applies a thrust toward the gas delivery port 1131 to the piston portion 120, thereby reducing the volume of the gas storage chamber 101, thereby ensuring that the gas pressure inside the gas storage chamber 101 remains unchanged; when the external compressor 300 delivers gas to the inside of the gas storage tank 110, the heating element does not work, the ambient temperature of the memory alloy member 130 is lower than the first temperature, and the piston portion 120 moves toward the bottom wall 112, thereby increasing the volume of the gas storage chamber 101, thereby ensuring that the gas pressure in the gas storage chamber 101 remains unchanged.
[0053] In this way, compared with the underwater airbags in the prior art, the constant pressure air supply device 100 provided by the present application has no special requirements for the use environment and can adapt to more application scenarios.
[0054] In some embodiments of this application, please continue to refer to Figure 2 and Figure 4 The heating element may include a heating ring 141, which is disposed around the outer side of the memory alloy member 130. Therefore, when the gas storage chamber 101 discharges gas to the outside, the surrounding environment of the memory alloy member 130 is heated by providing the heating ring 141. When the ambient temperature exceeds the first temperature, the thrust exerted by the memory alloy member 130 on the piston portion 120 compresses the volume of the gas storage chamber 101, thereby ensuring that the gas pressure in the gas storage chamber 101 is constant.
[0055] In some embodiments of this application, please continue to refer to Figure 2 and Figure 4 The heating element may further include a track 142 and an electrically controlled pulley 143 . The track 142 is disposed on the inner surface of the peripheral wall 111 . The track 142 extends from the bottom wall 112 toward the top cover 113 . The heating ring 141 slidably cooperates with the track 142 through the electrically controlled pulley 143 .
[0056] It should be noted that, since the volume of the driving chamber 102 will change, the maximum volume of the heating ring 141 is smaller than the minimum volume of the driving chamber 102. When the piston portion 120 moves toward the gas delivery port 1131, the volume of the driving chamber 102 increases. At this time, the heating ring 141 is arranged around the circumferential outer side of the memory alloy part 130. By setting the track 142 and the electrically controlled pulley 143, the heating ring 141 can slide along the extension direction of the memory alloy part 130 to heat different parts of the memory alloy part 130, so that the heated part and the heated part can be restored to the first state.
[0057] Specifically, the initial position of the heating ring 141 is close to the bottom wall 112. When the gas is discharged from the air storage chamber 101, the heating ring 141 heats the memory alloy part 130, and the memory alloy part 130 pushes the piston part 120 to move toward the gas delivery port 1131. The length of the memory alloy part 130 increases. At this time, the part of the surrounding environment of the memory alloy part 130 close to the bottom wall 112 reaches the first temperature, and part of the memory alloy part 130 returns to the first state. By setting the track 142 and the electrically controlled pulley 143, the heating ring 141 can move toward the top cover 113 to further heat the environment at this position, so that the part of the memory alloy part 130 returns to the first state. In this way, the thrust applied to the piston part 120 can be controlled by setting the movable heating ring 141 to meet the discharge of different volumes of gas from the air storage chamber 101. The constant-pressure gas supply device 100 provided in the present application can achieve a constant pressure inside the air storage chamber 101.
[0058] Therefore, the track 142 and the electrically controlled pulley 143 are provided to ensure the stability of the heating ring 141 during the movement, thereby preventing the heating ring 141 from shaking and colliding with the memory alloy part 130 .
[0059] In some embodiments of this application, please continue to refer to Figure 2 and Figure 4 The heating element may further include a connecting rod 144, one end of the connecting rod 144 is connected to the heating ring 141, and the other end is connected to the electrically controlled pulley 143. It should be noted that the heating ring 141 is generally too small to be directly slidably connected to the track 142 on the peripheral wall 111. The sliding connection between the heating ring 141 and the track 142 is achieved by setting the connecting rod 144 and the electrically controlled pulley 143.
[0060] In some embodiments of this application, please continue to refer to Figure 2 and Figure 4The constant pressure air supply device 100 may further include a pressure sensor 150, which is located at the air delivery port 1131. The pressure sensor 150 is used to detect the air pressure at the air delivery port 1131, so as to determine the required movement amount of the piston part 120, so as to determine the length of the memory alloy part 130 that needs to be heated, and heat this part of the memory alloy part 130 through the heating ring 141.
[0061] In some embodiments of this application, please continue to refer to Figure 2 and Figure 4 The constant pressure air supply device 100 may further include a heating source 160 and a heat pipe. The heating source 160 is located outside the gas storage tank 110. The heating source 160 is connected to the heating element through the heat pipe. The heat pipe transports the heat storage medium in the heating source 160 to the heating element to heat the heating element. Placing the heating source 160 outside the gas storage tank 110 is conducive to the later repair and maintenance of the heating source 160.
[0062] Among them, the heating source 160 may include a heating tube 161, which heats the heat storage medium inside the heating source 160. The heating tube 161 may use an electric heating wire or industrial waste heat to heat the heat storage medium. The heat storage medium may be water, heat transfer oil, etc.
[0063] Furthermore, the constant pressure air supply device 100 may also include a pump 175 , which is disposed on the heat conducting pipe and provides power for the movement of the heat storage medium.
[0064] Furthermore, the constant pressure air supply device 100 may also include a valve, which is disposed on the heat conducting pipe, and the heat conducting pipe is turned on and off by disposing the valve.
[0065] Furthermore, the heat pipe may include an input pipe 176 and an output pipe 177, wherein the input pipe 176 is used to transport the heat storage medium in the heating source 160 to the heating element, and the output pipe 177 is used to transport the heat storage medium flowing through the heating element back to the heating source 160, thereby forming a circulation of the heat storage medium.
[0066] In a specific implementation process, the valve may include a first valve 171 and a second valve 172 , wherein the first valve 171 is disposed on an input pipe 176 , and the second valve 172 is disposed on an output pipe 177 .
[0067] In some embodiments of this application, please continue to refer to Figure 1 and Figure 3 An auxiliary heating source 400 can be connected in series between the compressor 300 and the gas delivery port 1131. It should be noted that the compressor 300 generates heat when compressing the gas. By setting up the auxiliary heating source 400, part of the heat can be used to heat the heating ring 141, thereby reducing energy loss.
[0068] Furthermore, a third valve 173 may be connected in series between the compressor 300 and the gas delivery port 1131 , and a fourth valve 174 may be connected in series between the expander 200 and the gas delivery port 1131 .
[0069] In some embodiments of the present application, the constant pressure air supply device 100 may further include a controller, which is electrically connected to the electric control pulley 143, the pressure sensor 150, and the heating element. Specifically, the pressure sensor 150 transmits the detected air pressure of the air delivery port 1131 to the controller, and the controller gives instructions for the electric control pulley 143 to move and stop according to the signal, and gives instructions for the heating element to heat.
[0070] It should be noted that, in this article, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.
[0071] The above description is only a specific embodiment of the present disclosure, so that those skilled in the art can understand or implement the present disclosure. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present disclosure. Therefore, the present disclosure will not be limited to the embodiments described herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.
Claims
1. A constant pressure air supply device, characterized in that: include: A gas storage tank, the gas storage tank comprising a peripheral wall, a bottom wall and a top cover, the bottom wall and the top cover are arranged opposite to each other, and the top cover is provided with a gas delivery port; A piston part, the piston part is located in the gas storage tank and is sealed and connected to the peripheral wall. The piston part divides the internal space of the gas storage tank into a gas storage chamber and a driving chamber. The gas delivery port is connected to the gas storage chamber. The piston part is slidable in the direction from the top cover to the bottom wall. A memory alloy component, wherein the memory alloy component is located in the driving cavity, one end of the memory alloy component is in contact with the piston portion, and the other end of the memory alloy component is in contact with the bottom wall, and the memory alloy component has a first state in an environment higher than a first temperature. When the memory alloy component is in the first state, it can apply a thrust toward the gas delivery port to the piston portion; A heating element is located in the driving cavity and is used to heat the memory alloy element.
2. The constant pressure air supply device according to claim 1, characterized in that: The heating element comprises a heating ring, and the heating ring is arranged around the outer side of the memory alloy element in the circumferential direction.
3. The constant pressure air supply device according to claim 2, characterized in that: The heating element further comprises a track and an electrically controlled pulley, wherein the track is arranged on the inner surface of the peripheral wall and extends in the direction from the bottom wall toward the top cover, and the heating ring is slidably matched with the track via the electrically controlled pulley.
4. The constant pressure air supply device according to claim 3, characterized in that: The heating element also includes a connecting rod, one end of which is connected to the heating ring, and the other end of which is connected to the electric control pulley.
5. The constant pressure air supply device according to claim 1, characterized in that: Also includes: A pressure sensor is located at the gas delivery port.
6. The constant pressure air supply device according to claim 1, characterized in that: Also includes: A heating source, the heating source being located outside the gas storage tank; A heat conducting pipe, wherein the heating source and the heating element are connected via the heat conducting pipe.
7. The constant pressure air supply device according to claim 6, characterized in that: Also includes: A valve is arranged on the heat conducting pipe.
8. The constant pressure air supply device according to claim 6, characterized in that: Also includes: A pump is arranged on the heat conducting pipe.
9. The constant pressure air supply device according to claim 6, characterized in that: The heat conduction pipe includes an input pipe and an output pipe. The input pipe is used to transport the heat storage medium in the heating source to the heating element, and the output pipe is used to transport the heat storage medium flowing through the heating element back to the heating source.
10. The constant pressure air supply device according to claim 3, characterized in that: Also includes: A controller is electrically connected to the electrically controlled pulley.