Centrifugal air compressor waste heat recovery device and method

Abstract

The invention discloses a centrifugal air compressor waste heat recovery device and method, and particularly relates to the technical field of centrifugal air compressor waste heat recovery, the centrifugal air compressor waste heat recovery device comprises a supporting seat, a flow guide recovery assembly is arranged on the supporting seat, the flow guide recovery assembly comprises a fan arranged on one side of the top of the supporting seat, and a plurality of first one-way valves are distributed on the fan; and each first one-way valve is communicated with the fan. Through corresponding cooperative use of all the structures, a high-temperature medium is shunted into all the guide pipes and the pressurizing pipes, the function that the high-temperature medium is shunted and recycled after being gathered is achieved, and the high-temperature medium makes contact with contact fins on the outer side of the first heat exchange pipe and contact fins on the outer side of the second heat exchange pipe for heat conduction and heat exchange; and the first heat exchange pipes and the second heat exchange pipes rotate, so that the contact fins on the first heat exchange pipes and the contact fins on the second heat exchange pipes can make contact with one another one by one, and the heat exchange recovery efficiency and effect are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of waste heat recovery of centrifugal air compressors, and more specifically, to a waste heat recovery device and method for a centrifugal air compressor. Background Art

[0002] A centrifugal air compressor is a speed compressor, mainly composed of two parts: the rotor and the stator. The rotor includes the fan and the shaft, while the stator is the casing (cylinder) and other parts. When the fan rotates at high speed, the gas rotates with it, and under the action of centrifugal force, the gas is thrown into the diffuser behind, and a vacuum zone is formed at the fan, at which time fresh air from the outside enters the fan. By continuously rotating and throwing out gas, the centrifugal air compressor can continuously produce compressed air.

[0003] Centrifugal air compressors generate a lot of waste heat during operation. If not handled, this waste heat will not only waste energy, but also pollute the environment. Therefore, it is of great significance to recycle and reuse the waste heat of centrifugal air compressors. Through waste heat recovery, the waste heat generated by centrifugal air compressors can be used for other purposes, such as heating, heating, etc., thereby improving energy utilization efficiency, reducing production costs, and reducing pollution to the environment.

[0004] Among them, the patent application number CN201420590041.6 discloses a waste heat recovery system for a centrifugal air compressor, including a heat recovery heat exchanger, a water inlet pipe, a water outlet pipe, an air inlet pipe and an air outlet pipe, one flow channel of the heat recovery heat exchanger connects the water inlet pipe and the water outlet pipe, and the other flow channel connects the air inlet pipe and the air outlet pipe, the air inlet pipe is connected to the centrifugal air compressor, the air outlet pipe is connected to the filter and the cooler in sequence, and a connecting valve connected in parallel with the heat recovery heat exchanger is provided between the air inlet pipe and the air outlet pipe; a drain valve and a two-way valve arranged in parallel are provided on the water inlet pipe; When this structure is in use, a large amount of heat energy generated during the operation of the air compressor can be recovered by exchanging heat between cold water and hot air in the heat recovery heat exchanger, and the recovered heat energy can be used for production and life to protect the environment. However, when this structure is in use, it is not easy to gather the high-temperature medium generated during the operation of the equipment together for diversion and recovery, resulting in low efficiency in waste heat recovery. Summary of the invention

[0005] In order to overcome the above-mentioned defects of the prior art, the present invention provides a centrifugal air compressor waste heat recovery device and method thereof, aiming to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solutions: A waste heat recovery device for a centrifugal air compressor, comprising a support seat, on which a flow guide recovery component is provided; The diversion recovery component includes a fan arranged on one side of the top of the support seat, a plurality of first one-way valves are distributed on the fan, and each of the first one-way valves is connected to the fan, a plurality of the first one-way valves are provided with a conduit, and one end of each of the conduits is provided with a boosting pipe, one end of the boosting pipe is provided with a second one-way valve, the second one-way valve is clamped with the boosting pipe, and a plurality of support rods are plugged into the second one-way valve; It can be seen that in the above technical solution, the method of pressurizing the high-temperature medium in the boost pipe and discharging it through the second one-way valve is easy to gather the high-temperature medium, so that the high-temperature medium is more targeted when it is discharged; A protective shell is provided at one end of the boost tube, a first heat exchange tube is provided in the protective shell, a second heat exchange tube is provided on one side of the first heat exchange tube, a plurality of contact fins are distributed on the outer sides of the first heat exchange tube and the second heat exchange tube, and the cross section of each contact fin is set to be spiral, and each contact fin is in contact with each other, a quick plug connector is provided at one end of the second heat exchange tube and the first heat exchange tube, and a discharge pipe port is provided at one end of each quick plug connector, the quick plug connector is rotatably connected to the protective shell, a gear box is provided at one end of the protective shell away from the quick plug connector, two extension tubes are provided in the gear box, and each extension tube is respectively provided at one end of the first heat exchange tube and the second heat exchange tube, the outer sides of the first heat exchange tube and the second heat exchange tube are sleeved with mutually meshing driven gears, the two extension tubes are respectively connected with the first heat exchange tube and the second heat exchange tube, and a guide cavity is opened between the first heat exchange tube and the second heat exchange tube and the corresponding contact fins, and the extension tube belonging to the first heat exchange tube is provided on the second one-way valve; It can be seen that in the above technical solution, the high-temperature medium contacts the contact fins on the outside of the first heat exchange tube and the contact fins on the outside of the second heat exchange tube for heat conduction and heat exchange, thereby realizing the function of waste heat recovery and utilization. At the same time, in order to further ensure the recovery efficiency and effect, the gear box is driven by an external motor to operate, and the gear box drives the extension tube and the driven gear to rotate during operation, thereby rotating the first heat exchange tube and the second heat exchange tube, so that the contact fins on each of the first heat exchange tube and the second heat exchange tube can contact each other one by one, and the heat generated by the friction between the two is also recovered by the heat exchange medium in the second heat exchange tube; A gathering frame is provided at one end of the boosting pipe, a turntable is provided inside the gathering frame, a crankshaft is provided on the turntable, a plurality of traction rods are distributed on the outside of the crankshaft, and each of the traction rods is movably connected to the crankshaft through an axle pin, a piston is movably connected to one end of the plurality of traction rods through an axle pin, and each of the pistons is respectively located in a corresponding boosting pipe, and the piston is slidably connected to the boosting pipe, a driving motor is provided on the fan, and an output end of the driving motor passes through the fan and the support seat and extends to the turntable, and a through hole is opened at one end of the gathering frame; It can be seen that in the above technical solution, the high-temperature medium in the gathering frame is extracted by starting the driving motor to drive the fan to run and is diverted through each first one-way valve, and the high-temperature medium is diverted to each conduit and the boosting pipe. When the driving motor drives the fan to run, it can also drive the turntable to rotate, and when the turntable rotates, it drives the crankshaft to rotate. When the crankshaft rotates, it pulls each traction rod and piston to move in the corresponding boosting pipe, so that the high-temperature medium in the boosting pipe is transported to the first heat exchange pipe through the second one-way valve; A waste heat recovery method, using the above-mentioned centrifugal air compressor waste heat recovery device, comprises the following steps; Step 1: The staff installs the device at the designated location. When the heat generated by the air compressor is being recycled, the heat exchange medium is injected into the second heat exchange tube, and the high-temperature medium is injected into the gathering frame through the through hole. The high-temperature medium in the gathering frame is extracted by the driving motor to drive the fan to run and is diverted through each first one-way valve, and the high-temperature medium is diverted to each conduit and booster pipe; Step 2: When the driving motor drives the fan to run, it can also drive the turntable to rotate. When the turntable rotates, it drives the crankshaft to rotate. When the crankshaft rotates, it pulls each traction rod and piston to move in the corresponding boosting pipe, so that the high-temperature medium in the boosting pipe is transported to the first heat exchange pipe through the second one-way valve; Step 3: The high-temperature medium contacts the contact fins on the outside of the first heat exchange tube and the contact fins on the outside of the second heat exchange tube for heat conduction and heat exchange, thereby realizing the function of waste heat recovery. At the same time, in order to further ensure the recovery efficiency and effect, the gear box is driven by an external motor to operate. When the gear box is in operation, it drives the extension tube and the driven gear to rotate, thereby rotating the first heat exchange tube and the second heat exchange tube, so that the contact fins on each of the first heat exchange tube and the second heat exchange tube can contact each other one by one, and the heat generated by the friction between the two is also recovered by the heat exchange medium in the second heat exchange tube; Step four, by pressurizing the high-temperature medium in the boost pipe and discharging it through the second one-way valve, it is easy to gather the high-temperature medium, so that the discharge of the high-temperature medium is more targeted.

[0007] Technical effects and advantages of the present invention: In the present invention, the heat exchange medium is injected into the second heat exchange tube, and the high-temperature medium is injected into the gathering frame through the through hole. The high-temperature medium in the gathering frame is extracted by starting the driving motor to drive the fan to run and is diverted through each first one-way valve, and the high-temperature medium is diverted to each conduit and the boosting pipe, so as to realize the function of diverting and recycling the high-temperature medium after it is gathered; When the driving motor of the present invention drives the fan to run, it can also drive the turntable to rotate. When the turntable rotates, it drives the crankshaft to rotate. When the crankshaft rotates, it pulls each traction rod and piston to move in the corresponding boosting pipe, so that the high-temperature medium in the boosting pipe is transported to the first heat exchange pipe through the second one-way valve; The high-temperature medium of the present invention contacts the contact fins on the outside of the first heat exchange tube and the contact fins on the outside of the second heat exchange tube for heat conduction and heat exchange, thereby realizing the function of waste heat recovery and utilization. The high-temperature medium is pressurized in the booster tube and discharged through the second one-way valve, which makes it easy to gather the high-temperature medium, making the discharge of the high-temperature medium more targeted. In the present invention, an external motor drives the gear box to operate. When the gear box is in operation, the extension tube and the driven gear are driven to rotate, thereby rotating the first heat exchange tube and the second heat exchange tube, so that the contact fins on each of the first heat exchange tube and the second heat exchange tube can contact each other one by one, and at the same time, the heat generated by the friction between the two is also recovered by the heat exchange medium in the second heat exchange tube; In summary, the overall design is simple and the structure is reasonable. Through the corresponding coordinated use of various structures, the high-temperature medium is diverted to various conduits and boosting tubes, so that the function of diverting and recycling the high-temperature medium after it is gathered is realized. The high-temperature medium contacts the contact fins on the outside of the first heat exchange tube and the contact fins on the outside of the second heat exchange tube for heat conduction and heat exchange, so as to realize the function of recycling the waste heat. The high-temperature medium is pressurized in the boosting tube and discharged through the second one-way valve, which makes it easy to gather the high-temperature medium, making the discharge of the high-temperature medium more targeted, so that the first heat exchange tube and the second heat exchange tube are rotated, so that the contact fins on each of the first heat exchange tube and the second heat exchange tube can contact each other one by one, thereby improving the heat exchange recovery efficiency and effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] In order to more clearly illustrate the technical solutions in the present disclosure, the following briefly introduces the drawings required to be used in some embodiments of the present disclosure. Obviously, the drawings described below are only drawings of some embodiments of the present disclosure. For ordinary technicians in this field, other drawings can also be obtained based on these drawings. In addition, the drawings described below can be regarded as schematic diagrams, and are not limitations on the actual size of the product involved in the embodiments of the present disclosure, the actual process of the method, the actual timing of the signal, etc.

[0009] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0010] Figure 2 This is a stereoscopic diagram of the booster pipe, fan and gathering frame of the present invention installed on a support base.

[0011] Figure 3 It is a three-dimensional diagram of the protective shell of the present invention.

[0012] Figure 4 It is a stereoscopic view of the protective shell, gear box, extension tube and driven gear of the present invention.

[0013] Figure 5It is a stereoscopic view of the second heat exchange tube, the first heat exchange tube, the quick-connect connector and the discharge pipe port of the present invention.

[0014] Figure 6 It is a cross-sectional view of the first heat exchange tube, the second heat exchange tube and the contact fin of the present invention.

[0015] Figure 7 It is a stereoscopic view of the turntable, crankshaft, drawbar and piston of the present invention.

[0016] Figure 8 It is a stereoscopic diagram of the gathering frame, booster pipe, drive motor and conduit of the present invention.

[0017] The reference numerals are: 1, support base; 101, fan; 102, first one-way valve; 103, conduit; 104, booster pipe; 105, second one-way valve; 106, support rod; 2. Protective shell; 201. First heat exchange tube; 202. Second heat exchange tube; 203. Contact fin; 204. Guide cavity; 205. Quick connector; 206. Discharge pipe; 207. Gear box; 208. Extension pipe; 209. Driven gear; 3. Gathering frame; 301. Turntable; 302. Crankshaft; 303. Drawbar; 304. Piston; 305. Through hole; 306. Driving motor. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] The terms "first", "second", "third" in the embodiments of the present application are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Thus, the features defined as "first", "second", "third" can expressly or implicitly include at least one of the features. In the description of the present application, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device comprising a series of steps or units is not limited to the listed steps or units, but optionally also includes steps or units that are not listed, or optionally also includes other steps or units inherent to these processes, methods, products or devices.

[0020] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0021] As attached Figure 1-8 The waste heat recovery device of a centrifugal air compressor shown in the figure uses a flow guide recovery component arranged on a support seat 1 and correspondingly cooperates with each structure to divert the high-temperature medium into each conduit 103 and a boost pipe 104, so as to realize the function of diverting and recycling the high-temperature medium after it is gathered. The high-temperature medium contacts with the contact fins 203 on the outside of the first heat exchange tube 201 and the contact fins 203 on the outside of the second heat exchange tube 202 for heat conduction and heat exchange, so as to realize the function of waste heat recovery. The high-temperature medium is pressurized in the boost pipe 104 and discharged through the second one-way valve 105, so that the high-temperature medium is easily gathered, so that the discharge of the high-temperature medium is more targeted, so that the first heat exchange tube 201 and the second heat exchange tube 202 are rotated, so that the contact fins 203 on each of the first heat exchange tube 201 and the second heat exchange tube 202 can contact each other one by one, thereby improving the heat exchange recovery efficiency and effect, and the specific structure of the component is arranged as follows.

[0022] The diversion recovery component includes a fan 101 arranged on one side of the top of the support seat 1, and a plurality of first one-way valves 102 are distributed on the fan 101, and each of the first one-way valves 102 is connected to the fan 101, and a conduit 103 is arranged on the plurality of first one-way valves 102, and a boosting pipe 104 is arranged at one end of each conduit 103, and a second one-way valve 105 is arranged at one end of the boosting pipe 104. The fan 101 is operated to extract the high-temperature medium in the gathering frame 3 and divert it through each first one-way valve 102, and the high-temperature medium is diverted to each conduit 103 and the boosting pipe 104. The second one-way valve 105 is clamped with the boosting pipe 104, and a plurality of support rods 106 are inserted on the second one-way valve 105. The high-temperature medium is pressurized in the boosting pipe 104 and discharged through the second one-way valve 105, so that the high-temperature medium is easy to gather, so that the discharge of the high-temperature medium is more targeted.

[0023] A protective shell 2 is provided at one end of the boost pipe 104, a first heat exchange tube 201 is provided in the protective shell 2, a second heat exchange tube 202 is provided on one side of the first heat exchange tube 201, a plurality of contact fins 203 are distributed on the outside of the first heat exchange tube 201 and the second heat exchange tube 202, and the cross section of each contact fin 203 is set to be spiral, and each contact fin 203 is in contact with each other, and the high-temperature medium passes through the contact fin 203 on the outside of the first heat exchange tube 201 and the contact fin 203 on the outside of the second heat exchange tube 202 to contact each other for heat conduction and heat exchange, one end of the second heat exchange tube 202 and the first heat exchange tube 201 are provided with a quick-connect connector 205, and one end of each quick-connect connector 205 is provided with a discharge pipe port 206, the quick-connect connector 205 is rotatably connected to the protective shell 2, and a gear box 207 is provided at the end of the protective shell 2 away from the quick-connect connector 205, and the gear box 2 Two extension tubes 208 are arranged in 07, and each extension tube 208 is respectively arranged at one end of the first heat exchange tube 201 and the second heat exchange tube 202. The outer sides of the first heat exchange tube 201 and the second heat exchange tube 202 are sleeved with mutually meshing driven gears 209. When the gear box 207 is in operation, it drives the extension tubes 208 and the driven gears 209 to rotate, thereby rotating the first heat exchange tube 201 and the second heat exchange tube 202, so that the contact fins 203 on each of the first heat exchange tube 201 and the second heat exchange tube 202 can contact each other one by one. The two extension tubes 208 are respectively connected with the first heat exchange tube 201 and the second heat exchange tube 202, and a guide cavity 204 is opened between the first heat exchange tube 201 and the second heat exchange tube 202 and the corresponding contact fins 203. The extension tube 208 belonging to the first heat exchange tube 201 is arranged on the second one-way valve 105.

[0024] A gathering frame 3 is provided at one end of the boost pipe 104, a turntable 301 is provided inside the gathering frame 3, a crankshaft 302 is provided on the turntable 301, a plurality of traction rods 303 are distributed on the outside of the crankshaft 302, and each traction rod 303 is movably connected to the crankshaft 302 through an axle pin, and one end of the plurality of traction rods 303 is movably connected to a piston 304 through an axle pin. When the drive motor 306 drives the fan 101 to run, it can also drive the turntable 301 to rotate, and when the turntable 301 rotates, it drives the crankshaft 302 to rotate, and the crankshaft 302 rotates. When rotating, each traction rod 303 and piston 304 will be pulled to move in the corresponding boosting pipe 104, and each piston 304 is respectively located in the corresponding boosting pipe 104, the piston 304 is slidably connected with the boosting pipe 104, and a driving motor 306 is arranged on the fan 101, and the output end of the driving motor 306 passes through the fan 101 and the support seat 1 and extends to the turntable 301, and a through hole 305 is opened at one end of the gathering frame 3, and the high-temperature medium in the boosting pipe 104 is transported to the first heat exchange pipe 201 through the second one-way valve 105.

[0025] A waste heat recovery method, using the above-mentioned centrifugal air compressor waste heat recovery device, comprises the following steps; Step one, the staff installs the device at the designated position. When the heat generated during the operation of the air compressor is recovered and utilized, the heat exchange medium is injected into the second heat exchange tube 202, and the high-temperature medium is injected into the gathering frame 3 through the through hole 305. The driving motor 306 starts the driving fan 101 to extract the high-temperature medium in the gathering frame 3 and divert it through each first one-way valve 102, and the high-temperature medium is diverted to each duct 103 and the boost pipe 104.

[0026] Step two, when the driving motor 306 drives the fan 101 to run, it can also drive the turntable 301 to rotate. When the turntable 301 rotates, it drives the crankshaft 302 to rotate. When the crankshaft 302 rotates, it will pull each traction rod 303 and piston 304 to move in the corresponding boosting pipe 104, so that the high-temperature medium in the boosting pipe 104 is transported to the first heat exchange pipe 201 through the second one-way valve 105.

[0027] Step three, the high-temperature medium passes through the contact fins 203 on the outside of the first heat exchange tube 201 and contacts the contact fins 203 on the outside of the second heat exchange tube 202 for heat conduction and heat exchange, thereby realizing the function of waste heat recovery. At the same time, in order to further ensure the efficiency and effect of recycling, the gear box 207 is driven by an external motor to operate. When the gear box 207 is running, it drives the extension tube 208 and the driven gear 209 to rotate, thereby rotating the first heat exchange tube 201 and the second heat exchange tube 202, so that the contact fins 203 on each of the first heat exchange tube 201 and the second heat exchange tube 202 can contact each other one by one, and the heat generated by the friction between the two is also recovered by the heat exchange medium in the second heat exchange tube 202.

[0028] Step 4, the high-temperature medium is pressurized in the boost pipe 104 and discharged through the second one-way valve 105, which makes it easy to gather the high-temperature medium, so that the high-temperature medium is more targeted when discharged.

[0029] According to the above structure, when in use, the heat exchange medium is injected into the second heat exchange tube 202, and the high-temperature medium is injected into the gathering frame 3 through the through hole 305. The driving motor 306 is used to start the driving fan 101 to extract the high-temperature medium in the gathering frame 3 and divert it through each first one-way valve 102, and the high-temperature medium is diverted to each conduit 103 and the boosting tube 104. When the driving motor 306 drives the fan 101 to run, it can also drive the turntable 301 to rotate. When the turntable 301 rotates, it drives the crankshaft 302 to rotate. When the crankshaft 302 rotates, it will pull each traction rod 303 and piston 304 to move in the corresponding boosting tube 104, so that the high-temperature medium in the boosting tube 104 is transported to the first heat exchange tube 201 through the second one-way valve 105.

[0030] The high-temperature medium passes through the contact fins 203 on the outside of the first heat exchange tube 201 and contacts the contact fins 203 on the outside of the second heat exchange tube 202 for heat conduction and heat exchange, thereby realizing the function of waste heat recovery. At the same time, in order to further ensure the efficiency and effect of recycling, the gear box 207 is driven by an external motor to operate. When the gear box 207 is in operation, it drives the extension tube 208 and the driven gear 209 to rotate, thereby rotating the first heat exchange tube 201 and the second heat exchange tube 202, so that the contact fins 203 on each of the first heat exchange tube 201 and the second heat exchange tube 202 can contact each other one by one, and the heat generated by the friction between the two is also recovered by the heat exchange medium in the second heat exchange tube 202.

[0031] Furthermore, the high-temperature medium is pressurized in the boost pipe 104 and discharged through the second one-way valve 105, which makes it easy to gather the high-temperature medium, so that the high-temperature medium is discharged more specifically.

[0032] Different from the prior art, the present application discloses a waste heat recovery device for a centrifugal air compressor and a method thereof. Through the corresponding coordinated use of various structures, the high-temperature medium is diverted to each conduit 103 and the boost pipe 104, so that the function of diverting and recycling the high-temperature medium after it is gathered is realized. The high-temperature medium passes through the contact fins 203 on the outside of the first heat exchange tube 201 and the contact fins 203 on the outside of the second heat exchange tube 202 to contact each other for heat conduction and heat exchange, so that the function of waste heat recovery is realized. The high-temperature medium is pressurized in the boost pipe 104 and discharged through the second one-way valve 105, which makes it easy to gather the high-temperature medium, making the discharge of the high-temperature medium more targeted, so that the first heat exchange tube 201 and the second heat exchange tube 202 rotate, so that the contact fins 203 on each of the first heat exchange tube 201 and the second heat exchange tube 202 can contact each other one by one, thereby improving the heat recovery efficiency and effect.

[0033] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A waste heat recovery device for a centrifugal air compressor, comprising a support base (1), characterized in that: The support seat (1) is provided with a flow diversion recovery component; The diversion recovery component comprises a fan (101) arranged on one side of the top of the support seat (1), a plurality of first one-way valves (102) are distributed on the fan (101), and each of the first one-way valves (102) is connected to the fan (101), a plurality of the first one-way valves (102) are provided with a conduit (103), and a boosting pipe (104) is provided at one end of each of the conduits (103); A protective shell (2) is provided at one end of the boost tube (104), a first heat exchange tube (201) is provided inside the protective shell (2), a second heat exchange tube (202) is provided on one side of the first heat exchange tube (201), and a plurality of contact fins (203) are distributed on the outer sides of the first heat exchange tube (201) and the second heat exchange tube (202); A gathering frame (3) is provided at one end of the boosting pipe (104).

2. The waste heat recovery device for a centrifugal air compressor according to claim 1, characterized in that: A second one-way valve (105) is provided at one end of the boosting pipe (104), the second one-way valve (105) is clamped with the boosting pipe (104), and a plurality of support rods (106) are plugged into the second one-way valve (105).

3. The waste heat recovery device for a centrifugal air compressor according to claim 1, characterized in that: The cross sections of the plurality of contact fins (203) are all arranged to be spiral-shaped, and the contact fins (203) are in contact with each other.

4. The waste heat recovery device for a centrifugal air compressor according to claim 1, characterized in that: One end of the second heat exchange tube (202) and the first heat exchange tube (201) are both provided with a quick-connect connector (205), and one end of each quick-connect connector (205) is provided with a discharge pipe opening (206), and the quick-connect connector (205) is rotatably connected to the protective shell (2).

5. The waste heat recovery device for a centrifugal air compressor according to claim 4, characterized in that: A gear box (207) is provided at one end of the protective shell (2) away from the quick-connect connector (205), two extension tubes (208) are provided in the gear box (207), and each of the extension tubes (208) is provided at one end of the first heat exchange tube (201) and the second heat exchange tube (202), respectively, and mutually meshing driven gears (209) are sleeved on the outer sides of the first heat exchange tube (201) and the second heat exchange tube (202).

6. The waste heat recovery device for a centrifugal air compressor according to claim 5, characterized in that: The two extension tubes (208) are respectively connected to the first heat exchange tube (201) and the second heat exchange tube (202), and a flow guide cavity (204) is provided between the first heat exchange tube (201) and the second heat exchange tube (202) and the corresponding contact fins (203), and the extension tube (208) to which the first heat exchange tube (201) belongs is arranged on the second one-way valve (105).

7. The waste heat recovery device for a centrifugal air compressor according to claim 1, characterized in that: A rotating disk (301) is arranged inside the gathering frame (3), a crankshaft (302) is arranged on the rotating disk (301), a plurality of traction rods (303) are distributed outside the crankshaft (302), and each of the traction rods (303) is movably connected to the crankshaft (302) via an axle pin.

8. The waste heat recovery device for a centrifugal air compressor according to claim 7, characterized in that: One end of each of the plurality of traction rods (303) is movably connected to a piston (304) via an axle pin, and each of the pistons (304) is located in a corresponding boosting pipe (104), and the piston (304) is slidably connected to the boosting pipe (104).

9. The centrifugal air compressor waste heat recovery device according to claim 7, characterized in that: The fan (101) is provided with a driving motor (306), the output end of the driving motor (306) passes through the fan (101) and the support seat (1) and extends to the rotating disk (301), and a through hole (305) is provided at one end of the gathering frame (3).

10. A waste heat recovery method, using the centrifugal air compressor waste heat recovery device according to any one of claims 1 to 9, characterized in that: The steps include: Step 1: inject the heat exchange medium into the second heat exchange tube (202), inject the high-temperature medium into the gathering frame (3) through the through hole (305), start the driving fan (101) by the driving motor (306) to extract the high-temperature medium in the gathering frame (3) and divert it through each first one-way valve (102), and divert the high-temperature medium into each conduit (103) and the booster pipe (104); Step 2: When the rotating disk (301) rotates, the crankshaft (302) is driven to rotate. When the crankshaft (302) rotates, each traction rod (303) and piston (304) are pulled to move in the corresponding boosting pipe (104), so that the high-temperature medium in the boosting pipe (104) is transported to the first heat exchange pipe (201) through the second one-way valve (105); Step three, the high-temperature medium passes through the contact fins (203) on the outside of the first heat exchange tube (201) and contacts the contact fins (203) on the outside of the second heat exchange tube (202) to perform heat conduction and heat exchange; Step 4: The first heat exchange tube (201) and the second heat exchange tube (202) are rotated so that the contact fins (203) on each of the first heat exchange tube (201) and the second heat exchange tube (202) are in contact with each other one by one; Step five, the high-temperature medium is gathered by pressurizing the high-temperature medium in the boosting pipe (104) and discharging the high-temperature medium through the second one-way valve (105).

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