High-temperature-resistant and corrosion-resistant pump body structure for liquid metal pump

Abstract

This invention provides a high-temperature resistant and corrosion-resistant pump body structure for liquid metal pumps, relating to the field of metal pump technology. It includes: an outer casing; a replacement corrosion-resistant part inside the outer casing; a heat dissipation part inside the replacement corrosion-resistant part; and a pumping part below the outer casing. By adopting a double-layered, split structure where the outer casing bears pressure and the replacement inner cylinder directly contacts the medium, the outer casing does not directly contact the high-temperature corrosive liquid metal, allowing for long-term repeated use. Only the replacement inner cylinder that has suffered corrosion and wear needs to be replaced individually, without the need for complete disassembly of the pump body's pressure-bearing outer shell. This facilitates easy assembly and disassembly. Furthermore, by setting up two operating modes—mechanical pumping and pipe pumping—and by quickly switching the water inlet mode by disassembling and assembling the plugging bottom block and the pumping part, it is suitable for both open liquid metal storage tank extraction and closed pipeline circulation transportation. This solves the problem that existing pumps cannot individually replace damaged sections when localized corrosion and wear occur within the pump cavity.

Description

Technical Field

[0001] This invention relates to the field of metal pump technology, and in particular to a high-temperature resistant and corrosion-resistant pump body structure for liquid metal pumps. Background Technology

[0002] Liquid metals possess excellent properties such as high thermal conductivity, good fluidity, and low saturated vapor pressure, and are now widely used in high-end industrial fields such as nuclear engineering cooling, high-temperature heat energy conversion, non-ferrous metal smelting, and aerospace heat dissipation. Liquid metal transfer pumps, as the core conveying equipment of the system, play a crucial role in the continuous circulation and transportation of high-temperature liquid metal media. The pump body, as the core load-bearing structure for pressure bearing, flow control, and corrosion protection, directly determines the service life and operational safety of the entire pump due to its high-temperature resistance, corrosion resistance, erosion resistance, and structural stability. Currently, most traditional liquid metal pumps on the market adopt an integral single-layer shell structure, using a single material for the pump body, and generally suffer from significant limitations in applicable operating conditions. Under the long-term erosion and wetting action of high-temperature liquid metal, the liquid metal is highly susceptible to erosion of the pump body's inner wall. Intergranular penetration corrosion and high-speed erosion coupling damage; at the same time, the pump body generates a large amount of thermal expansion under high temperature conditions. The single shell structure cannot effectively compensate for thermal stress, which easily leads to failures such as shell deformation, flange cracking and sealing leakage. Traditional pump body flow channels mostly adopt conventional volute structures, with abrupt changes in flow channel corners and the existence of stagnation dead zones. The medium flow uniformity is poor, and local scouring is severe, which easily causes rapid wear and corrosion at the tongue and bend. Existing liquid metal pump bodies generally have technical defects such as poor high temperature resistance, weak resistance to liquid metal corrosion, severe thermal stress deformation, large flow channel scouring and wear, inconvenient maintenance and replacement, and insufficient heat insulation protection. They are difficult to meet the stringent requirements of high temperature, strong corrosion and long-term continuous operation. In order to maintain the normal use of the pump body, a pump body structure is needed.

[0003] Currently, while conventional split-type pump bodies are publicly available in existing technologies, allowing for segmented disassembly and assembly of the pump casing, it is inconvenient to replace damaged sections individually when corrosion and wear occur locally on the inner wall of the pump cavity or in the flow-through components. Maintenance requires the complete disassembly of the entire pump body. Under high-temperature operating conditions, the heat carried by the medium is easily conducted along the metal body of the pump casing to the shaft seal and bearing end. Long-term high-temperature environment will accelerate the aging and adhesion of the seals, leading to seal failure and significantly reducing the overall operational reliability of the pump unit. Summary of the Invention

[0004] This invention relates to a high-temperature corrosion resistant pump body structure for liquid metal pumps, which has a replaceable corrosion-resistant part; by adopting an outer shell for pressure protection and a replaceable inner cylinder that directly contacts the medium, the outer shell does not directly contact the high-temperature corrosive liquid metal, and can be reused for a long time. Only the replaceable inner cylinder that has been corroded and worn needs to be replaced separately, without the need to completely disassemble the pump body's pressure-bearing outer shell, making disassembly and assembly convenient and maintenance simple.

[0005] This invention provides a high-temperature resistant and corrosion-resistant pump body structure for liquid metal pumps, specifically including: an outer assembly; the outer assembly includes an outer housing; a docking head is rotatably connected inside the outer housing; four circumferentially distributed constraint grooves are formed on the inner wall of the outer housing; four circumferentially distributed connecting grooves are formed on the outer wall of the outer housing; a baffle plate is fixedly connected to each of the four connecting grooves; a replacement corrosion-resistant part is provided inside the outer assembly; the replacement corrosion-resistant part includes a replacement inner cylinder; a water receiving groove is formed inside the replacement inner cylinder; the replacement inner cylinder... Four circumferentially distributed constraint blocks are fixed to the outer wall of the replacement inner cylinder; a heat dissipation groove is provided inside the replacement inner cylinder; a water supply groove is provided inside the replacement inner cylinder; a water delivery blade is rotatably connected inside the water supply groove; a water inlet hole is provided on the outer wall of the replacement inner cylinder; a plugging bottom block is threadedly connected to the bottom of the replacement inner cylinder when it is in the pumping state; a heat dissipation part is provided inside the replacement anti-corrosion part; the heat dissipation part includes an inner block; a connecting through hole is provided in the middle of the inner block; a heat dissipation inner plate is fixed to the inner block; a water pumping part is provided below the outer part.

[0006] Preferably, the interior of the outer housing is configured as a cavity structure; an outer mounting base is fixedly connected to the outer wall of the outer housing; a circular insertion hole connected to the inner cavity of the outer housing is provided on the outer mounting base; and an outer connecting cylinder is fixedly connected to the outer mounting base.

[0007] Preferably, the outer tube is inserted into the circular socket, and the outer tube can be connected to an external water pipe; the docking head is provided with a hexagonal prism-shaped protrusion structure.

[0008] Preferably, the four barrier plates are each provided with a mesh; a support frame is fixedly connected to the top of the outer casing; a drive assembly is fixedly connected to the top of the support frame; and the drive assembly is electrically connected to an external control assembly.

[0009] Preferably, the replacement inner cylinder is fixedly inserted inside the outer casing, and the bottom of the replacement inner cylinder has a threaded through hole; the water inlet groove can be aligned with the circular insertion hole of the outer casing, and an outer cylinder is inserted into the water inlet groove.

[0010] Preferably, the constraint outer block is inserted into the constraint groove; the water supply groove is connected to the water inlet groove and the heat dissipation inner groove; the water delivery blade can be kept in an inserted state with the docking head.

[0011] Preferably, the inner block is fixed inside the heat dissipation inner groove; the connecting through hole is a threaded through hole, and the connecting through hole can be connected to the water supply groove.

[0012] Preferably, the pumping unit includes a fixed base frame; the fixed base frame is fixedly connected to the bottom of the outer housing; the fixed base frame is provided with an inner insertion pipe; a threaded head is fixedly connected to the end of the inner insertion pipe, and the inner insertion pipe is threadedly connected to the inside of the connecting through hole through the threaded head.

[0013] Preferably, an adjustment groove is provided on the outer wall of the inner insertion tube; a locking block is movably connected to the adjustment groove; a thread is provided on the outer wall of the locking block, and the locking block is threadedly connected to the bottom of the replacement inner cylinder when the tube is being pulled out; an outer tube is fixedly connected to the end of the adjustment groove.

[0014] The high-temperature resistant and corrosion-resistant pump body structure for liquid metal pumps provided by this invention has the following beneficial effects: In this invention, by adopting a double-layered split structure with an outer shell bearing pressure protection and an inner cylinder that directly contacts the medium, the outer shell does not directly contact the high-temperature corrosive liquid metal and can be reused for a long time. Only the inner cylinder that has been corroded and worn needs to be replaced separately. There is no need to completely disassemble the pump body's pressure-bearing outer shell. Disassembly and assembly are convenient, maintenance is simple, and equipment operation and maintenance costs are greatly reduced.

[0015] In addition, the pump body is equipped with an independent heat dissipation section. The heat dissipation fins and heat dissipation grooves form a built-in heat conduction and heat dissipation structure, which can dissipate the high temperature heat generated during pumping operations in real time, effectively reduce the temperature accumulation inside the pump body, alleviate the thermal expansion stress generated by the shell under high temperature conditions, significantly improve the overall high temperature resistance of the pump body, and make it suitable for long-term continuous transportation of high temperature liquid metals.

[0016] In addition, a mesh baffle is installed at the connecting groove of the outer casing to intercept solid impurities mixed inside the liquid metal during the mechanical pumping operation. This prevents hard impurities from eroding and wearing the water supply tank and water delivery blades at high speed, reducing damage and extending the service life of the internal flow structure. At the same time, by setting up two operating modes, mechanical pumping and pipe pumping, and by quickly switching the water inlet mode by disassembling and assembling the blocking bottom block and the pumping part, it is suitable for pumping from open liquid metal storage tanks and can also meet the needs of closed pipeline circulation transportation, making the structure highly versatile.

[0017] In addition, the pump body adopts a constraint groove and constraint block insertion and limiting structure to ensure accurate positioning and stable connection of the replacement inner cylinder during installation. It avoids locking and fixing with the bottom locking block, improving the overall sealing and structural stability. At the same time, it achieves all-round support and fixation through the fixed base frame and the support top frame. The external structure has high strength, excellent vibration resistance and deformation resistance, and can adapt to the harsh working environment of high temperature, high pressure and strong corrosion in the liquid metal transportation. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings of the embodiments will be briefly described below.

[0020] The accompanying drawings described below are only related to some embodiments of the invention and are not intended to limit the invention.

[0021] In the attached diagram: Figure 1 A schematic diagram of a three-dimensional assembly structure according to an embodiment of the present invention is shown; Figure 2 A schematic diagram of the three-dimensional assembly bottom view structure according to an embodiment of the present invention is shown; Figure 3 A schematic diagram of the exploded structure according to an embodiment of the present invention is shown; Figure 4 A schematic diagram of the exploded bottom view structure according to an embodiment of the present invention is shown; Figure 5 A schematic diagram of a partially cut-out structure in the tube-drawing state according to an embodiment of the present invention is shown; Figure 6 It shows the result of Figure 5 A schematic diagram of the enlarged structure of section A; Figure 7 It shows the result of Figure 5 A schematic diagram of the enlarged structure of section B is shown. Figure 8 A schematic diagram of a partially cut-out structure in the machine-drawing state according to an embodiment of the present invention is shown; Figure 9 It shows the result of Figure 8 A schematic diagram of the enlarged structure of section C; Figure 10 A schematic diagram of the external assembly structure according to an embodiment of the present invention is shown; Figure 11 A schematic diagram of the assembly structure of the replacement corrosion-resistant part and the heat dissipation part according to an embodiment of the present invention is shown; Figure 12 A schematic diagram of the pumping unit assembly structure according to an embodiment of the present invention is shown.

[0022] List of reference numerals in the attached diagram: 1. External assembly; 101. External housing; 102. Mounting base; 103. External connecting cylinder; 104. Docking head; 105. Constraint groove; 106. Connecting groove; 107. Barrier baffle; 108. Support frame; 109. Drive assembly; 2. Replace the anti-corrosion part; 201. Replace the inner cylinder; 202. Water inlet groove; 203. Constraint outer block; 204. Heat dissipation inner groove; 205. Water supply groove; 206. Water delivery blades; 207. Water inlet hole; 208. Block the bottom block; 3. Heat dissipation unit; 301. Internal component; 302. Connecting through hole; 303. Heat dissipation fins; 4. Pumping unit; 401. Fixed base frame; 402. Inner connecting pipe; 403. Adjustment groove; 404. Locking block; 405. Outer connecting pipe. Detailed Implementation

[0023] The embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples.

[0024] Example 1: Please refer to Figures 1 to 12This invention proposes a high-temperature resistant and corrosion-resistant pump body structure for a liquid metal pump, comprising: an outer casing 1; the outer casing 1 includes an outer housing 101; the outer housing 101 is used to assist in the installation and fixation of other structures of the pump body, so as to facilitate the overall stability of the pump body and its use; a docking head 104 is rotatably connected inside the outer housing 101; the docking head 104 is used to control the rotation adjustment of the water delivery blades 206 under the drive of the drive assembly 109, so as to facilitate the pumping of water and its use; four circumferentially distributed constraint grooves 105 are provided on the inner wall of the outer housing 101; the constraint grooves 105 are used to cooperate with the constraint outer block 203 to assist in constraining the replacement inner cylinder 201, so as to facilitate the maintenance of the replacement inner cylinder. The connection between the cylinder 201 and the outer housing 101 is stable; four circumferentially distributed connecting grooves 106 are provided on the outer wall of the outer housing 101; the connecting grooves 106 are used to assist in connecting the baffle plate 107 to the inner cavity of the outer housing 101, so as to facilitate the extraction of liquid metal in the pumping state; baffle plates 107 are fixedly connected to the four connecting grooves 106 respectively; the baffle plates 107 are used to protect the internal structure and, together with the water inlet 207, to intercept large-volume impurities from the outside, preventing them from entering the pump body; the outer housing 1 has a replacement corrosion protection part 2 inside; the replacement corrosion protection part 2 includes a replacement inner cylinder 201; the replacement inner cylinder 201 is used to assist in the installation of other structures of the pump body and to replace them by disassembly. The design increases the pump body's corrosion resistance; a water inlet groove 202 is provided inside the replacement inner cylinder 201; the water inlet groove 202 is used to assist the outer cylinder 103 in transporting liquids for convenient use; four circumferentially distributed constraint blocks 203 are fixed to the outer wall of the replacement inner cylinder 201; the constraint blocks 203 are used to constrain the replacement inner cylinder 201 by being inserted into the constraint groove 105, so as to maintain the stability of the connection between the replacement inner cylinder 201 and the outer housing 101; a heat dissipation inner groove 204 is provided inside the replacement inner cylinder 201; the heat dissipation inner groove 204 is used to assist in fixing the inner block 301, so as to maintain its stability and facilitate the heat dissipation of the pump body with the heat dissipation inner fins 303; replacement The inner cylinder 201 has a water supply tank 205 inside; the water supply tank 205 is used to assist in the installation of water delivery blades 206, so as to cooperate with the water receiving trough 202 to transport and process the liquid; the water delivery blades 206 are rotatably connected inside the water supply tank 205; the water delivery blades 206 are used to rotate under the control of the drive assembly 109 and the docking rotor 104, thereby providing power to the liquid and facilitating the pumping of the liquid; a water inlet hole 207 is provided on the outer wall of the inner cylinder 201; the water inlet hole 207 is used to assist the liquid to enter the pump body in the pumping state, and cooperates with the baffle 107 to intercept large-volume impurities from the outside; when the inner cylinder 201 is in the pumping state, a plugging block 208 is threadedly connected to the bottom;The blocking block 208 is used to block the bottom of the replacement inner cylinder 201 when the pump body is in the pumping state, and to facilitate the use of the pump body by removing the auxiliary installation inner connector 402 and locking block 404 when the pump body is in the pipe pumping state; the replacement anti-corrosion part 2 has a heat dissipation part 3 inside; the heat dissipation part 3 includes an inner block 301; the inner block 301 is used to assist in the installation of heat dissipation inner fins 303 to help dissipate the heat generated inside the pump body; a connecting through hole 302 is opened in the middle of the inner block 301; the connecting through hole 302 is used to assist in docking with the inner connector 402 to facilitate the pumping of liquid; the heat dissipation inner fins 303 are fixed on the inner block 301; the heat dissipation inner fins 303 are used to help dissipate the heat generated inside the pump body to facilitate its use; a water pumping part 4 is provided below the outer part 1.

[0025] Example 2: Based on Example 1, as follows Figures 1 to 12 As shown, the interior of the outer housing 101 is a hollow structure; an outer mounting base 102 is fixedly connected to the outer wall of the outer housing 101; the outer mounting base 102 is used to assist in the installation of the outer connecting tube 103 to facilitate stability and maintain stability with the external water outlet pipe during the pumping process; a circular insertion hole is provided on the outer mounting base 102 to connect to the inner cavity of the outer housing 101; the outer connecting tube 103 is fixedly connected to the outer mounting base 102; the outer connecting tube 103 is used to assist in the connection with the external water outlet pipe to facilitate water treatment.

[0026] The outer tube 103 is inserted into the circular socket and can be connected to an external water pipe; the docking head 104 is provided with a hexagonal prism-shaped protrusion structure.

[0027] Four baffles 107 are provided with mesh holes; a support frame 108 is fixedly connected to the top of the outer casing 101; the support frame 108 is used to assist in fixing the drive assembly 109 so as to keep the whole stable; the drive assembly 109 is fixedly connected to the top of the support frame 108; the drive assembly 109 is electrically connected to the external control assembly; the drive assembly 109 is used to control the docking head 104 to drive the water delivery blades 206 under the control of the external control assembly, thereby driving the liquid to process.

[0028] The replacement inner cylinder 201 is fixedly inserted inside the outer housing 101, and the bottom of the replacement inner cylinder 201 is provided with a threaded through hole; the water inlet groove 202 can be aligned with the circular insertion hole of the outer housing 101, and the outer cylinder 103 is inserted into the water inlet groove 202.

[0029] The constraint outer block 203 is inserted into the constraint groove 105; the water supply groove 205 is connected to the water flow groove 202 and the heat dissipation inner groove 204; the water delivery blade 206 can be connected to the docking head 104.

[0030] The inner block 301 is fixed inside the heat dissipation inner groove 204; the connecting through hole 302 is set as a threaded through hole, and the connecting through hole 302 can be connected to the water supply groove 205.

[0031] The pumping unit 4 includes a fixed base frame 401; the fixed base frame 401 is used to assist in supporting the outer housing 101 to help maintain the overall stability of the pump body; the fixed base frame 401 is fixed to the bottom of the outer housing 101; the fixed base frame 401 is provided with an inner insertion pipe 402; the inner insertion pipe 402 is used to cooperate with the outer pipe 405 to transport liquid in the pipe pumping state to facilitate the pumping of liquid; a threaded head is fixed to the end of the inner insertion pipe 402, and the inner insertion pipe 402 is threadedly connected to the inside of the connecting through hole 302 through the threaded head.

[0032] An adjustment groove 403 is provided on the outer wall of the inner insertion tube 402; the adjustment groove 403 is used to assist in the installation of the locking block 404, so as to facilitate its adjustment; the locking block 404 is movably connected to the adjustment groove 403; the locking block 404 is used to constrain the inner insertion tube 402 by means of a threaded connection to the bottom of the replacement inner cylinder 201 when the tube is being pulled, so as to facilitate its overall stability; the outer wall of the locking block 404 is provided with threads, and the locking block 404 is threadedly connected to the bottom of the replacement inner cylinder 201 when the tube is being pulled; an outer tube 405 is fixedly connected to the end of the adjustment groove 403; the outer tube 405 is used to cooperate with the inner insertion tube 402 to pump liquid, so as to facilitate its use.

[0033] The working process of this embodiment is as follows: In this invention, when performing mechanical pumping and conveying operations, the device is first fixed in the working area by placing it on the fixed base frame 401 to ensure that the outer casing 101 is placed stably. The plugging bottom block 208 is screwed onto the bottom of the replacement inner cylinder 201. Then, the outer connecting cylinder 103 is connected to the external water outlet pipe. The external control component is started to control the drive component 109 to operate. The drive component 109 drives the docking head 104 to rotate. The docking head 104 is inserted and drives the water delivery blade 206 to rotate synchronously. Under the action of the blade rotation, the external liquid metal enters the water supply tank 205 through the connecting groove 106 and the water inlet hole 207. The baffle 107 uses the surface mesh to intercept large-volume impurities mixed in with the liquid metal. The liquid metal that has entered the interior is discharged from the outer connecting cylinder 103 through the water receiving groove 202, completing the continuous pumping operation. During the pipe pumping operation, unscrew the plugging block 208 at the bottom of the replacement inner cylinder 201, and connect the inner insertion pipe 402 at the top of the pumping unit 4 to the connecting through hole 302 through the end thread. At the same time, slide the locking block 404 inside the adjusting groove 403 so that the outer thread of the locking block 404 locks and fixes with the threaded hole at the bottom of the replacement inner cylinder 201, ensuring that the inner insertion pipe 402 is firmly connected and preventing loosening and leakage during the high-pressure liquid metal transportation process. Connect the outer pipe 405 to the external transportation pipeline. The drive component 109 also drives the water delivery blade 206 to rotate at high speed. The external liquid metal is introduced into the water supply tank 205 through the outer pipe 405 and the inner insertion pipe 402, and finally discharged from the outer cylinder 103, realizing closed-loop pipe pumping and transportation. During the pumping process, the high temperature heat generated inside the pump body is conducted to the heat dissipation fins 303 inside the heat dissipation inner groove 204. The heat dissipation is achieved by relying on the heat conduction of metal, reducing the accumulation of high temperature heat. When the pump body transports high-temperature liquid metal for a long time, and the inner wall of the replacement inner cylinder 201 becomes corroded or worn, the drive assembly 109 can be turned off, the top drive assembly 109 and the docking head 104 can be disassembled, and the replacement inner cylinder 201 can be directly pulled out from the outer housing 101 for replacement using the plug-in mating structure of the constraint groove 105 and the constraint outer block 203. There is no need to disassemble the external pressure housing, and the disassembly and assembly are simple. The outer housing 101 serves as an external load-bearing protection structure and does not directly contact the corrosive medium, so it can be reused for a long time.

[0034] The following points should be noted in this article: 1. The accompanying drawings of the embodiments disclosed herein only relate to the structures involved in the embodiments disclosed herein; other structures can be referred to in general design.

[0035] 2. Where there is no conflict, the embodiments of this disclosure and the features in the embodiments can be combined with each other to obtain new embodiments.

[0036] The above are merely specific embodiments of this disclosure, but the scope of protection of this disclosure is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this disclosure should be included within the scope of protection of this disclosure. Therefore, the scope of protection of this disclosure should be determined by the scope of the claims.

Claims

1. A high temperature resistant corrosion resistant pump body structure for a liquid metal pump, comprising: An outer casing (1); characterized in that the outer casing (1) includes an outer casing shell (101); a docking head (104) is rotatably connected inside the outer casing shell (101); four circumferentially distributed constraint grooves (105) are provided on the inner wall of the outer casing shell (101); four circumferentially distributed connecting grooves (106) are provided on the outer wall of the outer casing shell (101); a baffle plate (107) is fixedly connected to each of the four connecting grooves (106); a replacement corrosion protection part (2) is provided inside the outer casing (1); the replacement corrosion protection part (2) includes a replacement inner cylinder (201); a water inlet groove (202) is provided inside the replacement inner cylinder (201); four circumferentially distributed constraint blocks are fixedly connected to the outer wall of the replacement inner cylinder (201). (203); The interior of the replacement inner cylinder (201) is provided with a heat dissipation groove (204); The interior of the replacement inner cylinder (201) is provided with a water supply groove (205); The interior of the water supply groove (205) is rotatably connected with a water delivery blade (206); The outer wall of the replacement inner cylinder (201) is provided with a water inlet hole (207); When the replacement inner cylinder (201) is in the pumping state, a plugging bottom block (208) is threadedly connected to the bottom; The interior of the replacement anti-corrosion part (2) is provided with a heat dissipation part (3); The heat dissipation part (3) includes an inner block (301); A connecting through hole (302) is provided in the middle position of the inner block (301); A heat dissipation inner plate (303) is fixedly connected to the inner block (301); A water pumping part (4) is provided below the outer part (1).

2. The high-temperature corrosion-resistant pump body structure for a liquid metal pump according to claim 1, characterized in that: The interior of the outer housing (101) is configured as a cavity structure; an outer mounting base (102) is fixedly connected to the outer wall of the outer housing (101); a circular insertion hole connected to the inner cavity of the outer housing (101) is provided on the outer mounting base (102); an outer connecting tube (103) is fixedly connected to the outer mounting base (102).

3. The high-temperature resistant and corrosion-resistant pump body structure for a liquid metal pump according to claim 2, characterized in that: The outer tube (103) is inserted into the circular socket, and the outer tube (103) can be connected to an external water pipe; the docking head (104) is provided with a hexagonal prism-shaped protrusion structure.

4. The high-temperature corrosion-resistant pump body structure for a liquid metal pump according to claim 1, characterized in that: The four barrier baffles (107) are respectively provided with mesh holes; the top of the outer housing (101) is fixedly connected to the machine support frame (108); the top of the machine support frame (108) is fixedly connected to the drive assembly (109); the drive assembly (109) is electrically connected to the external control assembly.

5. The high-temperature corrosion-resistant pump body structure for a liquid metal pump according to claim 2, characterized by: The replacement inner cylinder (201) is fixedly inserted inside the outer housing (101), and the bottom of the replacement inner cylinder (201) is provided with a threaded through hole; the water inlet groove (202) can be aligned with the circular insertion hole of the outer housing (101), and the outer cylinder (103) is inserted into the water inlet groove (202).

6. The high-temperature corrosion-resistant pump body structure for a liquid metal pump according to claim 1, characterized by: The constraint outer block (203) is inserted into the constraint groove (105); the water supply groove (205) is connected to the water flow groove (202) and the heat dissipation inner groove (204); the water delivery blade (206) can be in a plugged state with the docking head (104).

7. The high-temperature corrosion-resistant pump body structure for a liquid metal pump according to claim 1, characterized by: The inner block (301) is fixed inside the heat dissipation inner groove (204); the connecting through hole (302) is set as a threaded through hole, and the connecting through hole (302) can be connected to the water supply groove (205).

8. The high-temperature resistant and corrosion-resistant pump body structure for a liquid metal pump according to claim 1, characterized in that: The pumping unit (4) includes a fixed base frame (401); the fixed base frame (401) is fixed to the bottom of the outer housing (101); the fixed base frame (401) is provided with an inner insertion pipe (402); the end of the inner insertion pipe (402) is fixed with a threaded head, and the inner insertion pipe (402) is threadedly connected to the inside of the connecting through hole (302) through the threaded head.

9. The high-temperature corrosion-resistant pump body structure for a liquid metal pump according to claim 8, characterized by: An adjustment groove (403) is provided on the outer wall of the inner insertion tube (402); a locking block (404) is movably connected to the adjustment groove (403); a thread is provided on the outer wall of the locking block (404), and the locking block (404) is threadedly connected to the bottom of the replacement inner cylinder (201) when the tube is in the tube-pulling state; an outer tube (405) is fixedly connected to the end of the adjustment groove (403).

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