A cooling device for steam turbine blade repair

Abstract

The application provides a cooling device for steam turbine blade repair, which comprises a working cavity, a cooling liquid tank and a cooling cavity; wherein the working cavity is provided with a first piston plate and a first return spring for dividing the working cavity into a first cavity and a second cavity, and the first cavity is provided with a cam fixed to a shaft; the cooling liquid tank is provided with a dividing tank fixed therein, the dividing tank is provided with a second piston plate and a second return spring for dividing the dividing tank into a first air cavity and a second air cavity, the second piston plate comprises a flat portion and a U-shaped portion connected to the flat portion; the first air cavity is communicated with the atmospheric pressure, the second air cavity is respectively communicated with the second cavity and the atmospheric pressure; the cooling cavity is respectively communicated with the working cavity and the atmospheric pressure, and is communicated with the cooling liquid tank. The cooling device provided by the application realizes cooling and heat dissipation of the cooling liquid flowing back by the U-shaped portion of the second piston plate, improves the cooling effect of the cooling liquid on the parts to be cooled, and realizes gas cooling and heat dissipation of the cooling cavity.

Description

Technical Field

[0001] This invention relates to the field of cooling technology, and more specifically to a cooling device for the repair of steam turbine blades. Background Technology

[0002] Cooling refers to the process of lowering the temperature of an object, and can be mainly divided into liquid cooling, ventilation cooling, and chemical cooling.

[0003] Air cooling and liquid cooling are commonly used cooling methods in existing technologies. Existing technologies use only air cooling, which has low cooling efficiency; or, existing technologies use only liquid cooling, where the coolant tank has an outlet and a return outlet. The liquid at the return outlet absorbs heat from the components being cooled, causing the temperature of the returning coolant to rise. Usually, the returning coolant is directly mixed with the coolant that has not absorbed heat, resulting in an overall increase in the temperature of the coolant in the tank, thereby reducing the cooling effect of the coolant. Therefore, how to improve the cooling effect of the components being cooled has become an urgent technical problem to be solved. Summary of the Invention

[0004] This invention provides a cooling device for turbine blade repair, which solves the technical problem of low cooling efficiency of components to be cooled in the prior art.

[0005] The present invention provides a cooling device for turbine blade repair, comprising:

[0006] The working chamber is sealed and slidably connected to a first piston plate, which divides the working chamber into a sealed first cavity and a second cavity. A cam is provided within the first cavity, fixed to a shaft, which is pivotally connected to the first cavity and drively connected to a power assembly. A first return spring is provided within the working chamber, one end of which is connected to the cavity wall of the working chamber, and the other end is connected to the first piston plate, and it always has a tendency to drive the first piston plate toward the cam.

[0007] A coolant tank has a first outlet and a return outlet. A partition box is fixed inside the coolant tank, located near the return outlet. The top plate of the partition box has a notch. A second piston plate is provided inside the partition box, dividing the partition box into a first air chamber and a second air chamber. The first air chamber is closer to the return outlet than the second air chamber. The second piston plate includes a flat portion and a U-shaped portion connected to the flat portion. The opening of the U-shaped portion faces the second air chamber, and the U-shaped portion is sealed and slidably connected to the notch. The first air chamber is in communication with external atmospheric pressure, and the second air chamber is in communication with both a second cavity body and external atmospheric pressure. A second return spring is provided inside the partition box, one end of which is fixed to the inner wall of the partition box, and the other end is fixed to the second piston plate, always having a tendency to drive the second piston plate towards the second air chamber.

[0008] The cooling chamber is connected to the working chamber and the external atmospheric pressure. The cooling chamber contains a component to be cooled. The cooling chamber has a liquid inlet and a second liquid outlet. The liquid inlet is connected to the first liquid outlet, and the second liquid outlet is connected to the return liquid outlet.

[0009] The cooling device for turbine blade repair provided by this invention has a power component that drives a shaft to rotate. Under the combined action of a cam and a first return spring, the first piston plate inside the working chamber reciprocates, accelerating the airflow in the second chamber and the second air chamber. The second piston plate reciprocates in a dividing box located near the return port. The U-shaped part of the second piston plate cools and dissipates heat from the returning coolant, improving the cooling effect of the coolant on the components to be cooled. It can also accelerate the airflow in the first chamber and the cooling chamber, achieving gas cooling and heat dissipation in the cooling chamber.

[0010] Furthermore, there are multiple notches, which are spaced apart along the length of the top plate. There are also multiple flat portions and multiple U-shaped portions, which are alternately arranged. This arrangement, with multiple notches and multiple U-shaped portions, increases the contact area between the second piston plate and the coolant at the return port, dividing the returning coolant into multiple segments for cooling and heat dissipation, thus improving the cooling efficiency of the returning coolant.

[0011] Furthermore, a limiting part is fixed to the top of the U-shaped portion, and the limiting part can abut against the top plate. This arrangement limits the second piston plate and prevents the U-shaped portion from disengaging from the notch to allow communication between the coolant tank and the dividing tank.

[0012] Furthermore, the cooling device includes: a first vent, a second vent, a third vent, a fourth vent, a fifth vent, a sixth vent, and a seventh vent;

[0013] The first vent and the sixth vent are located on the cavity wall of the first cavity;

[0014] The second vent and the third vent are respectively provided on the cavity wall of the second cavity;

[0015] The fourth vent and the fifth vent are respectively located on the cavity wall of the second air chamber;

[0016] The seventh vent is located on the wall of the cooling chamber;

[0017] The first vent, the second vent, and the fifth vent are respectively connected to the external atmospheric pressure. A first vent pipe is connected between the third vent and the fourth vent, and a second vent pipe is connected between the sixth vent and the seventh vent.

[0018] Furthermore, the first vent is equipped with a first solenoid valve; the second vent is equipped with a second solenoid valve; the first vent pipe is equipped with a third solenoid valve; the fifth vent is equipped with a fourth solenoid valve; and the second vent pipe is equipped with a fifth solenoid valve.

[0019] The first, second, third, fourth, and fifth solenoid valves are configured such that: if the distal edge of the cam rotates toward the first piston plate, the first and third solenoid valves are both open, and the second, fourth, and fifth solenoid valves are all closed; if the distal edge of the cam rotates away from the first piston plate, the first and third solenoid valves are both closed, and the second, fourth, and fifth solenoid valves are all open.

[0020] Furthermore, the cooling device also includes a controller, and the first solenoid valve, the second solenoid valve, the third solenoid valve, the fourth solenoid valve and the fifth solenoid valve are all electrically connected to the controller.

[0021] Furthermore, the cooling cavity has multiple heat dissipation holes, which are spaced apart.

[0022] Furthermore, the first reset spring is a compression spring, located in the second cavity, with one end connected to the first piston plate and the other end connected to the cavity wall of the second cavity; or the first reset spring is a tension spring, located in the first cavity, with one end connected to the first piston plate and the other end connected to the cavity wall of the first cavity.

[0023] Furthermore, the second return spring is a tension spring, located in the second air chamber, with one end fixed to the wall of the second air chamber and the other end fixed to the second piston plate; or the second return spring is a compression spring, located in the first air chamber, with one end fixed to the wall of the first air chamber and the other end fixed to the second piston plate.

[0024] Furthermore, the cooling device includes multiple casters mounted on its bottom. This design facilitates the movement of the cooling device and saves labor costs. Attached Figure Description

[0025] Figure 1 A cross-sectional structural schematic diagram (I) of a cooling device for turbine blade repair provided in an embodiment of the present invention;

[0026] Figure 2 A cross-sectional structural schematic diagram (II) of a cooling device for turbine blade repair provided in an embodiment of the present invention;

[0027] Figure 3 for Figure 1 A partial schematic diagram of the structure at point B in the middle;

[0028] Explanation of reference numerals in the attached figures:

[0029] 10. Box body; 101. Casters;

[0030] 100. Working chamber; 110. First piston plate; 120. First cavity; 121. Shaft; 122. Cam; 123. First vent; 124. First solenoid valve; 125. Sixth vent; 126. Fifth solenoid valve; 127. Second vent pipe; 130. Second cavity; 131. Second vent; 132. Second solenoid valve; 133. Third vent; 134. First vent pipe; 135. Third solenoid valve; 140. First return spring;

[0031] 200. Coolant tank; 201. First outlet; 202. Return outlet; 203. Outlet pipe; 204. Return pipe; 205. Pump; 210. Divider box; 220. Top plate; 221. Notch; 230. Second piston plate; 231. Flat section; 232. U-shaped section; 240. First air chamber; 250. Second air chamber; 251. Fourth vent; 252. Fifth vent; 253. Fourth solenoid valve; 254. Third vent pipe; 260. Limiting part; 270. Second return spring;

[0032] 300. Cooling chamber; 301. Liquid inlet; 302. Second liquid outlet; 303. Component to be cooled; 304. Heat dissipation hole; 305. Seventh vent hole;

[0033] 400. Controller. Detailed Implementation

[0034] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the following description is provided in conjunction with the accompanying drawings. Figures 1-3 Specific embodiments of the present invention will be described in detail below.

[0035] This invention provides a cooling device for turbine blade repair, see attached figure. Figure 1 and Figure 2 The cooling device includes a working chamber 100, a coolant tank 200, and a cooling chamber 300. A first piston plate 110 is sealed and slidably connected within the working chamber 100, dividing the working chamber 100 into a sealed first chamber 120 and a second chamber 130. A cam 122 is provided within the first chamber 120, fixedly connected to a shaft 121, which is pivotally connected to the first chamber 120 and drively connected to a power assembly. A first return spring 140 is provided within the working chamber 100. One end of 40 is connected to the cavity wall of the working chamber 100, and the other end is connected to the first piston plate 110, and always has the tendency to drive the first piston plate 110 toward the cam 122; the coolant tank 200 has a first outlet 201 and a return outlet 202, and a dividing box 210 is fixedly installed inside the coolant tank 200. The dividing box 210 is close to the return outlet 202. The top plate 220 of the dividing box 210 has a notch 221. A second piston plate 230 is installed inside the dividing box 210, and the second piston plate 230 divides the dividing box 210 into two parts. The first air chamber 240 and the second air chamber 250 are respectively located closer to the return port 202 than the second air chamber 250. The second piston plate 230 includes a flat portion 231 and a U-shaped portion 232 connected to the flat portion 231. The opening of the U-shaped portion 232 faces the second air chamber 250. The U-shaped portion 232 is sealed and slidably connected to the notch 221. The first air chamber 240 is connected to the external atmospheric pressure, and the second air chamber 250 is connected to the second cavity 130 and the external atmospheric pressure. A second return spring is provided inside the dividing box 210. 270, one end of the second return spring 270 is fixed to the inner wall of the dividing box 210, and the other end is fixed to the second piston plate 230, and always has the tendency to drive the second piston plate 230 toward the second air chamber 250; the cooling chamber 300 is connected to the working chamber 100 and the external atmospheric pressure respectively, and the cooling chamber 300 is provided with the component to be cooled 303. The cooling chamber 300 has a liquid inlet 301 and a second liquid outlet 302. The liquid inlet 301 is connected to the first liquid outlet 201, and the second liquid outlet 302 is connected to the return liquid outlet 202.

[0036] Specifically, the cooling device provided in the embodiments of the present invention includes a housing 10, and the housing 10 is provided with a working chamber 100, a coolant tank 200, and a cooling chamber 300.

[0037] Specifically, the inlet 301 and the first outlet 201 are connected by an outlet pipe 203, and a liquid pump 205 is provided on the outlet pipe 203. The second outlet 302 and the return outlet 202 are connected by a return pipe 204.

[0038] It should be noted that the working chamber 100 has two working states. First, as the distal edge of the cam 122 rotates towards the first piston plate 110, the outer edge of the cam 122 pushes the first piston plate 110 away from the cam 122 or the shaft 121. Simultaneously, the first return spring 140 further stores elastic potential energy. At this time, the first chamber 120 draws air from the outside, and the second chamber 130 blows air into the second air chamber 250, causing the second piston plate 230 to move away from the bottom wall of the second air chamber 250. At the same time, the second return spring 270 further stores elastic potential energy. The U-shaped portion 232 of the second piston plate 230 reacts to the returning air... The coolant is used for cooling and heat dissipation; secondly, as the distal edge of the cam 122 rotates away from the first piston plate 110, the first return spring 140 releases elastic potential energy, pushing the first piston plate 110 to move closer to the cam 122 or the shaft 121. At this time, the second air chamber 250 is not connected to the second cavity 130, but is connected to the external atmospheric pressure. The second return spring 270 releases elastic potential energy, driving the second piston plate 230 to move closer to the bottom wall of the second air chamber 250. The second cavity 130 draws in air from the outside, and the first cavity 120 blows air into the cooling chamber 300, thereby achieving gas cooling and heat dissipation in the cooling chamber 300.

[0039] In this embodiment of the invention, the power component includes a motor, and the power output end of the motor is connected to the shaft 121.

[0040] Therefore, in the cooling device provided in this embodiment of the invention, the power component drives the shaft 121 to rotate. Under the combined action of the cam 122 and the first return spring 140, the first piston plate 110 inside the working chamber 100 reciprocates, accelerating the airflow in the second chamber 130 and the second air chamber 250. The second piston plate 230 reciprocates in the dividing box 210 located near the return port. The U-shaped portion 232 of the second piston plate 230 cools and dissipates heat on the returned coolant, improving the cooling effect of the coolant on the component 303 to be cooled. It can also accelerate the airflow in the first chamber 120 and the cooling chamber 300, realizing gas cooling and heat dissipation of the cooling chamber 300. By driving the cooling chamber 300 through a single working chamber 100, both gas cooling and liquid cooling of the cooling chamber 300 are achieved. The structure is simple and the cooling efficiency of the component 303 to be cooled is improved.

[0041] See appendix Figure 3In this embodiment of the invention, there are multiple notches 221, which are spaced apart along the length of the top plate 220. There are also multiple flat portions 231 and U-shaped portions 232, which are alternately arranged. This arrangement increases the contact area between the second piston plate 230 and the coolant at the return port, dividing the returning coolant into multiple segments for cooling and heat dissipation, thus improving the cooling efficiency of the returning coolant.

[0042] In this embodiment of the invention, the flat portion 231 is a sheet-like structure, and the U-shaped portion 232 is a sheet-like structure.

[0043] See appendix Figure 3 In this embodiment of the invention, the top end of the U-shaped portion 232 is fixedly connected to the limiting portion 260, which can abut against the top plate 220. This configuration limits the second piston plate 230, preventing the U-shaped portion 232 from disengaging from the notch 221 so that the coolant tank 200 and the dividing tank 210 can communicate.

[0044] In one embodiment of the present invention, the limiting part 260 is a sheet-like structure, and the width of the limiting part 260 is greater than the width of the notch 221.

[0045] In another embodiment of the present invention, the limiting part 260 is a U-shaped structure, which includes a limiting piece and a folded edge. The folded edge extends along the surface of the limiting piece and extends toward the top plate 220 of the dividing box 210. The folded edge can abut against the top plate 220.

[0046] See appendix Figure 2 According to an embodiment of the present invention, the cooling device includes: a first vent 123, a second vent 131, a third vent 133, a fourth vent 251, a fifth vent 252, a sixth vent 125, and a seventh vent 305; the first vent 123 and the sixth vent 125 are disposed on the cavity wall of the first cavity 120; the second vent 131 and the third vent 133 are respectively disposed on the cavity wall of the second cavity 130; the fourth vent 251 and the fifth vent 252 are respectively disposed on the cavity wall of the second cavity 130; The first vent 123, the second vent 131 and the fifth vent 252 are respectively connected to the external atmospheric pressure. The third vent 133 and the fourth vent 251 are connected by a first vent pipe 134. The sixth vent 125 and the seventh vent 305 are connected by a second vent pipe 127. The fifth vent 252 is connected to the outdoor atmospheric pressure through the third vent pipe 254.

[0047] See appendix Figure 2In this embodiment of the invention, a first vent 123 is provided with a first solenoid valve 124; a second vent 131 is provided with a second solenoid valve 132; a first vent pipe 134 is provided with a third solenoid valve 135; a fifth vent 252 is provided with a fourth solenoid valve 253; and a second vent pipe 127 is provided with a fifth solenoid valve 126. The first solenoid valve 124, the second solenoid valve 132, the third solenoid valve 135, the fourth solenoid valve 253, and the fifth solenoid valve 126 are configured such that: if the distal edge of the cam 122 rotates towards the first piston plate 110, both the first solenoid valve 124 and the third solenoid valve 135 are open, and both the second solenoid valve 132, the fourth solenoid valve 253, and the fifth solenoid valve 126 are closed; if the distal edge of the cam 122 rotates away from the first piston plate 110, both the first solenoid valve 124 and the third solenoid valve 135 are closed, and both the second solenoid valve 132, the fourth solenoid valve 253, and the fifth solenoid valve 126 are open.

[0048] See appendix Figure 1 In this embodiment of the invention, the cooling device further includes a controller 400, and the first solenoid valve 124, the second solenoid valve 132, the third solenoid valve 135, the fourth solenoid valve 253, and the fifth solenoid valve 126 are all electrically connected to the controller 400. Specifically, the controller 400 is located in the housing 10.

[0049] See appendix Figure 1 In this embodiment of the invention, the cooling chamber 300 has multiple heat dissipation holes 304, which are spaced apart. It should be noted that the heat dissipation holes 304 are positioned as far away from the vents as possible. This arrangement allows the heat inside the cooling chamber 300 to be dissipated sufficiently and in a timely manner, ensuring the normal operation of the equipment inside the cooling chamber 300.

[0050] In one embodiment of the present invention, the first return spring 140 can be a compression spring located in the second cavity 130. One end of the compression spring is connected to the first piston plate 110, and the other end is connected to the cavity wall of the second cavity 130. It should be noted that during the rotation of the cam 122, when the distal edge of the cam 122 rotates towards the first piston plate 110, the outer edge of the cam 122 pushes the first piston plate 110 away from the cam 122 or the shaft 121, while the compression spring is further compressed. When the distal edge of the cam 122 rotates away from the first piston plate 110, the compression spring releases its elastic potential energy, pushing the first piston plate 110 towards the cam 122 or the shaft 121. This cycle repeats, and the first piston plate 110 reciprocates within the second cavity 130 under the combined action of the cam 122 and the compression spring.

[0051] See appendix Figure 1In another embodiment of the present invention, the first return spring 140 can be a tension spring located in the first cavity 120. One end of the tension spring is connected to the first piston plate 110, and the other end is connected to the cavity wall of the first cavity 120. It should be noted that during the rotation of the cam 122, when the distal edge of the cam 122 rotates towards the first piston plate 110, the outer edge of the cam 122 will push the first piston plate 110 away from the cam 122 or the shaft 121, while the tension spring is further stretched. When the distal edge of the cam 122 rotates away from the first piston plate 110, the tension spring releases its elastic potential energy, pushing the first piston plate 110 towards the cam 122 or the shaft 121. This cycle repeats, and the first piston plate 110 reciprocates within the second cavity 130 under the combined action of the cam 122 and the tension spring.

[0052] In this embodiment of the invention, there are multiple first return springs 140, which are spaced apart. This arrangement allows the first piston plate 110 to have multiple force-bearing points, reducing force deviation and ensuring uniform force distribution on the first piston plate 110, thus achieving stable reset.

[0053] See appendix Figure 3 In one embodiment of the present invention, the second return spring 270 can be a tension spring, located in the second air chamber 250. One end of the tension spring is fixed to the cavity wall of the second air chamber 250, and the other end is fixed to the second piston plate 230. It should be noted that when the first cavity 120 draws air from the outside, and the second cavity 130 blows air into the second air chamber 250, the second piston plate 230 moves away from the bottom wall of the second air chamber 250, and the tension spring is further stretched. When the second cavity 130 is not connected to the second air chamber 250, the second air chamber 250 is connected to the external atmospheric pressure, and the tension spring releases its elastic potential energy, driving the second piston plate 230 to move closer to the bottom wall of the second air chamber 250.

[0054] In another embodiment of the present invention, the second return spring 270 can be a compression spring located in the first air chamber 240. One end of the compression spring is fixed to the wall of the first air chamber 240, and the other end is fixed to the second piston plate 230. It should be noted that when the first chamber 120 draws air from the outside, and the second chamber 130 blows air into the second air chamber 250, the second piston plate 230 moves away from the bottom wall of the second air chamber 250, and the compression spring is further compressed. When the second chamber 130 is not connected to the second air chamber 250, the second air chamber 250 is connected to the external atmospheric pressure, and the compression spring releases its elastic potential energy, driving the second piston plate 230 to move closer to the bottom wall of the second air chamber 250.

[0055] In this embodiment of the invention, there are multiple second return springs 270, which are spaced apart. This arrangement allows the second piston plate 230 to have multiple force-bearing points, reducing force deviation and ensuring uniform force distribution on the second piston plate 230, thus achieving stable reset.

[0056] In this embodiment of the invention, the cooling device includes a plurality of casters 101 mounted on the bottom of the cooling device. This arrangement facilitates the movement of the cooling device and saves labor costs.

[0057] The working principle of the cooling device provided by this invention is as follows:

[0058] If the motor drives the distal edge of the cam 122 fixed to the shaft 121 to rotate towards the first piston plate 110, the outer edge of the cam 122 will push the first piston plate 110 to move away from the cam 122 or the shaft 121. At the same time, the first return spring 140 further stores elastic potential energy. At this time, the first solenoid valve 124 provided in the first vent 123 and the third solenoid valve 135 provided in the vent pipe connecting the third vent 133 and the fourth vent 251 are opened, and the second solenoid valve 132 and the fourth solenoid valve 253 are closed. That is, the first cavity 120 draws air from the outside through the first vent 123, and the second cavity 130 blows air into the second air cavity 250 through the vent pipe, causing the second piston plate 230 to move away from the bottom wall of the second air cavity 250. The U-shaped part 232 of the second piston plate 230 cools and dissipates heat from the returning coolant. At the same time, the second return spring 270 further stores elastic potential energy.

[0059] If the motor drives the distal edge of the cam 122, which is fixed to the shaft 121, to rotate away from the first piston plate 110, the outer edge of the cam 122 will push the first piston plate 110 to move closer to the cam 122 or the shaft 121. At the same time, the first return spring 140 releases its stored elastic potential energy. At this time, the first solenoid valve 124 located in the first vent 123 and the third solenoid valve 13 located in the vent pipe connecting the third vent 133 and the fourth vent 251 will activate. When 5 is closed, the second solenoid valve 132 and the fourth solenoid valve 253 are opened, that is, the second chamber 130 draws air from the outside through the second vent 131, and the first chamber 120 blows air into the cooling chamber 300 through the second vent pipe 127, and the gas cools the component 303 to be cooled in the cooling chamber 300; the second air chamber 250 exhausts air to the outside through the fifth vent 252, and the second return spring 270 releases elastic potential energy to drive the second piston plate 230 to move towards the bottom wall of the second air chamber 250.

[0060] While the present invention has been disclosed above, it is not limited thereto. Any person skilled in the art can make various modifications and alterations without departing from the spirit and scope of the invention; therefore, the scope of protection of the present invention should be determined by the scope defined in the claims.

Claims

1. A cooling device for turbine blade repair, characterized in that, include: A working chamber (100) is sealed and slidably connected to a first piston plate (110). The first piston plate (110) divides the working chamber (100) into a sealed first cavity (120) and a second cavity (130). A cam (122) is provided in the first cavity (120). The cam (122) is fixed to a shaft (121). The shaft (121) is pivotally connected to the first cavity (120) and is drively connected to a power assembly. A first return spring (140) is provided in the working chamber (100). One end of the first return spring (140) is connected to the cavity wall of the working chamber (100), and the other end is connected to the first piston plate (110). It always has a tendency to drive the first piston plate (110) toward the cam (122). A coolant tank (200) has a first outlet (201) and a return outlet (202). A partition box (210) is fixed inside the coolant tank (200). The partition box (210) is close to the return outlet (202). The top plate (220) of the partition box (210) has a notch (221). There are multiple notches (221), and the multiple notches (221) are spaced apart along the length direction of the top plate (220). The dividing box (210) is provided with a second piston plate (230), which divides the dividing box (210) into a first air chamber (240) and a second air chamber (250). The first air chamber (240) is closer to the return port (202) than the second air chamber (250). The second piston plate (230) includes a flat portion (231) and a U-shaped portion (232) connected to the flat portion (231). The opening of the U-shaped portion (232) faces the second air chamber (250). The U-shaped portion (232) is sealed and slidably connected to the notch (221). There are multiple flat portions (231) and multiple U-shaped portions (232), and multiple flat portions (231) and multiple U-shaped portions (232) are alternately arranged. The top end of the U-shaped portion (232) is fixedly connected to the limiting portion (260), and the limiting portion (260) can abut against the top plate (220). The first air chamber (240) is connected to the external atmospheric pressure, and the second air chamber (250) is connected to the second cavity (130) and the external atmospheric pressure. The dividing box (210) is provided with a second return spring (270). One end of the second return spring (270) is fixedly connected to the inner wall of the dividing box (210), and the other end is fixedly connected to the second piston plate (230), and always has the tendency to drive the second piston plate (230) toward the second air chamber (250). A cooling chamber (300) is connected to the working chamber (100) and the external atmospheric pressure. A component (303) to be cooled is provided in the cooling chamber (300). The cooling chamber (300) has a liquid inlet (301) and a second liquid outlet (302). The liquid inlet (301) is connected to the first liquid outlet (201), and the second liquid outlet (302) is connected to the return liquid outlet (202). The cooling chamber (300) has a plurality of heat dissipation holes (304) and they are spaced apart.

2. The cooling device according to claim 1, characterized in that, The cooling device includes: a first vent (123), a second vent (131), a third vent (133), a fourth vent (251), a fifth vent (252), a sixth vent (125), and a seventh vent (305); The first vent (123) and the sixth vent (125) are disposed on the cavity wall of the first cavity (120); The second vent (131) and the third vent (133) are respectively provided on the cavity wall of the second cavity (130); The fourth vent (251) and the fifth vent (252) are respectively provided on the cavity wall of the second air chamber (250); The seventh vent (305) is provided on the cavity wall of the cooling cavity (300); The first vent (123), the second vent (131) and the fifth vent (252) are respectively connected to the external atmospheric pressure, the third vent (133) and the fourth vent (251) are connected by a first vent pipe (134), and the sixth vent (125) and the seventh vent (305) are connected by a second vent pipe (127).

3. The cooling device according to claim 2, characterized in that, The first vent (123) is equipped with a first solenoid valve (124); the second vent (131) is equipped with a second solenoid valve (132); the first vent pipe (134) is equipped with a third solenoid valve (135); the fifth vent (252) is equipped with a fourth solenoid valve (253); and the second vent pipe (127) is equipped with a fifth solenoid valve (126). The first solenoid valve (124), the second solenoid valve (132), the third solenoid valve (135), the fourth solenoid valve (253), and the fifth solenoid valve (126) are configured such that: if the distal edge of the cam (122) rotates toward the first piston plate (110), the first solenoid valve (124) and the third solenoid valve (135) are both open, and the second solenoid valve (132), the fourth solenoid valve (253), and the fifth solenoid valve (126) are all closed; if the distal edge of the cam (122) rotates away from the first piston plate (110), the first solenoid valve (124) and the third solenoid valve (135) are both closed, and the second solenoid valve (132), the fourth solenoid valve (253), and the fifth solenoid valve (126) are all open.

4. The cooling device according to claim 3, characterized in that, The cooling device also includes a controller (400), and the first solenoid valve (124), the second solenoid valve (132), the third solenoid valve (135), the fourth solenoid valve (253) and the fifth solenoid valve (126) are all electrically connected to the controller (400).

5. The cooling device according to claim 1, characterized in that, The first return spring (140) is a compression spring, which is located in the second cavity (130). One end of the compression spring is connected to the first piston plate (110), and the other end is connected to the cavity wall of the second cavity (130); or the first return spring (140) is a tension spring, which is located in the first cavity (120). One end of the tension spring is connected to the first piston plate (110), and the other end is connected to the cavity wall of the first cavity (120).

6. The cooling device according to claim 1, characterized in that, The second return spring (270) is a tension spring, which is located in the second air chamber (250). One end of the tension spring is fixed to the cavity wall of the second air chamber (250), and the other end is fixed to the second piston plate (230); or the second return spring (270) is a compression spring, which is located in the first air chamber (240). One end of the compression spring is fixed to the cavity wall of the first air chamber (240), and the other end is fixed to the second piston plate (230).

7. The cooling device according to claim 1, characterized in that, The cooling device includes a plurality of casters (101) mounted on the bottom of the cooling device.

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