A complete set of nuclear power high temperature reactor evaporator cleaning production device and its working method

Abstract

The application provides a nuclear power high-temperature reactor evaporator complete set cleaning production device and a working method thereof, which can meet the high-precision and high-reliability requirements of high-temperature gas cooled reactor evaporator assembly, and improve the assembly efficiency and quality. The inner support tool and the shell support tool are detachably arranged on the frame; the fixed base is arranged on the support frame; the transverse sliding seat is arranged on the fixed base; the transverse adjusting bolt is connected with the transverse sliding seat; the vertical adjusting plate is arranged on the transverse sliding seat; the vertical adjusting bolt is connected with the vertical adjusting plate; the pressing clamp is arranged on the vertical adjusting plate; the feed water pipe support tool is detachably arranged on the frame; the flange seat is arranged on the support seat; the wedge-shaped gasket assembly is arranged between the flange seat and the support seat; the lower clamping sleeve is fixedly arranged in the positioning hole, and the upper clamping sleeve is fixed on the flange seat; the upper clamping sleeve and the lower clamping sleeve are stacked together; and the inner support tool, the feed water pipe support tool and the shell support tool are selectively arranged on the frame.

Description

Technical Field

[0001] This invention relates to a complete set of clean production equipment and its working method for a nuclear power high-temperature reactor steam generator, used for the clean production of a nuclear power high-temperature gas-cooled reactor steam generator. Background Technology

[0002] With the increasing global demand for clean energy, nuclear energy, as a stable and efficient energy form, is becoming increasingly important. Generation IV nuclear power technology, with its higher safety, economy, sustainability, and waste minimization, has become a key area of ​​current nuclear power research and development. The High Temperature Gas-cooled Reactor (HTGR), as one of the representatives of Generation IV nuclear power technology, has many advantages. It uses helium as a coolant and graphite as a moderator, enabling efficient operation at high temperatures and possessing inherent safety. The evaporator, as one of its key components, is a crucial nuclear power component that plays a vital role in nuclear power plants. In a nuclear reactor, the nuclear reactions in the fuel elements generate a large amount of heat energy, which needs to be dissipated through the coolant. The evaporator is the component that converts the heat energy in the coolant into steam, thereby generating electricity. Its principle is to transfer the heat energy in the coolant to the outside of the reactor through heat conduction, then transfer it to another working fluid through a heat exchanger, ultimately driving the turbine to generate electricity.

[0003] The clean production equipment for high-temperature reactor steam generators is used for clean production in processes such as assembly, welding, heat treatment, flaw detection, and final assembly of high-temperature reactor steam generator internals. Chinese Patent Application No. 202211563530.8 discloses a modular construction and installation system and method for internal components of a high-temperature gas-cooled reactor nuclear power plant. This system includes a pre-assembly building, a first crane, and a second crane. The pre-assembly building is located outside the nuclear island building and has an openable and closable roof. Inside the pre-assembly building is an assembly area for internal component modules aligned with the roof. The first crane can sequentially lift multiple cylinders moved into the pre-assembly building into the internal component module assembly area to assemble them into internal component cylinders, and can sequentially lift multiple modular components moved into the pre-assembly building into the internal component cylinders to assemble them into internal component modules. The second crane is used to lift the internal component modules into the reactor pressure vessel cylinder already installed in the reactor compartment for installation. This method allows for the pre-assembly of in-core components modules in the pre-assembly facility. After the reactor pressure vessel is installed, the in-core components modules are then hoisted into it for installation.

[0004] The high-temperature reactor evaporator is one of the key components of a high-temperature reactor system. Its assembly precision and quality significantly impact the overall reactor performance. However, its complex structure, large size, and extremely high manufacturing precision requirements necessitate careful assembly. As shown in the existing patented technologies above, traditional assembly methods suffer from the following problems:

[0005] (1) Insufficient assembly precision: It is difficult to ensure the concentricity of the evaporator components and the frame, which affects the operating performance of the equipment.

[0006] (2) Poor adjustment flexibility: lack of efficient leveling and positioning mechanism, resulting in low assembly efficiency. Summary of the Invention

[0007] The purpose of this invention is to overcome the above-mentioned deficiencies in the prior art and to provide a reasonably designed complete set of clean production equipment and its working method for nuclear power high-temperature reactor evaporators, which can meet the high precision and high reliability requirements of high-temperature gas-cooled reactor evaporator assembly and improve assembly efficiency and quality.

[0008] The technical solution adopted by this invention to solve the above problems is: a complete set of clean production equipment for a nuclear power high-temperature reactor evaporator, including a lead-room clean production room and a final assembly clean production room; an assembly platform is provided in both the lead-room clean production room and the final assembly clean production room, and the assembly platform includes a frame; the assembly platform also includes a centering and positioning mechanism, an internal component support fixture, a water supply pipe support fixture, and an outer shell support fixture; the centering and positioning mechanism includes a positioning wheel and a telescopic mechanism, the telescopic mechanism is set on the frame, and the positioning wheel is set on the telescopic mechanism; the internal component support fixture and the outer shell support fixture are both detachably set on the top of the frame; the internal component support fixture includes a support frame and a pipe port fixture; the support frame is detachably set on the top of the frame, and the pipe port fixture includes a fixed base, a horizontal sliding seat, a horizontal adjusting bolt, a vertical adjusting plate, a vertical adjusting bolt, and a clamp; the fixed base is fixedly set on the support frame; the horizontal sliding seat is horizontally movable on the fixed base; the horizontal adjusting bolt is connected to the horizontal sliding seat; the vertical adjusting plate is vertically movable on the horizontal sliding seat; the vertical adjusting bolt is connected to the vertical adjusting plate; the clamp is fixedly fixed. The system is fixedly mounted on a vertical adjustment plate; the water supply pipe support fixture is detachably mounted at the bottom of the frame, comprising a support base and a water supply pipe fixture; the support base is detachably mounted at the bottom of the frame, and the water supply pipe fixture includes a flange seat and an adjusting clamping assembly, which includes a wedge pad assembly and a clamping sleeve assembly; the flange seat is mounted on the support base and has positioning holes; the wedge pad assembly is positioned between the flange seat and the support base, comprising an upper wedge pad and a lower wedge pad stacked together; the clamping sleeve assembly includes an upper clamping sleeve and a lower clamping sleeve, with the lower clamping sleeve... The upper clamping sleeve is fixedly installed in the positioning hole, and the lower clamping sleeve is fixed on the flange seat. After the upper clamping sleeve extends into the positioning hole, it overlaps with the lower clamping sleeve. The internal component support fixture, water supply pipe support fixture, and outer shell support fixture can be selectively installed on the frame. When the assembly table is used for the production of heat exchange internal components, the internal component support fixture and water supply pipe support fixture are installed on the frame, but the outer shell support fixture is not installed. When the assembly table is used for the production of the outer shell and the assembly of the heat exchange internal components and the outer shell, the outer shell support fixture is installed on the frame, but the internal component support fixture and water supply pipe support fixture are not installed.

[0009] The internal component support fixture of the present invention further includes a horizontal fixing bolt and a vertical fixing bolt. The horizontal sliding seat is fixed to the fixed base by the horizontal fixing bolt, and the vertical adjusting plate is fixed to the horizontal sliding seat by the vertical fixing bolt.

[0010] The overlapping surface between the upper wedge pad and the lower wedge pad described in this invention is an inclined surface; the overlapping surface between the upper clamping sleeve and the lower clamping sleeve is an inclined surface.

[0011] The outer shell support fixture of the present invention is equipped with a jack.

[0012] The telescopic mechanism of the present invention includes an electric push rod, a swing positioning bracket, a pull rod assembly, and a wheel bracket; the swing positioning bracket is fixedly mounted on a frame; both the electric push rod and the pull rod assembly are mounted on the swing positioning bracket, and the electric push rod is connected to the pull rod assembly; the wheel bracket is hinged to the pull rod assembly; and the positioning wheel is mounted on the pull rod assembly.

[0013] The present invention includes a lead production room in a clean production room, and the assembly frame is set in the lead production room.

[0014] In this invention, the roof and the main door of the lead production room are integrated to form an L-shaped door. The L-shaped door includes an inner L-shaped lead door and an outer L-shaped partition door. The inner L-shaped lead door and the outer L-shaped partition door are set inside and outside, and are each installed separately and horizontally on the lead production room. Lead plates are laid on the inner L-shaped lead door.

[0015] The assembly stand of the present invention also includes a work platform, which is fixedly mounted on the frame.

[0016] The present invention comprises multiple adjusting clamping components arranged in a ring; and multiple centering and positioning mechanisms are arranged in a ring.

[0017] A method for operating a complete set of clean production equipment for a high-temperature nuclear power reactor evaporator includes the following steps:

[0018] (1) When producing heat exchange internals in the lead-lined clean production room:

[0019] The lateral position of the lateral sliding seat on the fixed base is adjusted by adjusting the lateral adjusting bolts, and the vertical position of the vertical adjusting plate on the lateral sliding seat is adjusted by adjusting the vertical adjusting bolts, thereby adjusting the vertical and lateral positions of the clamp to match the position of the inlet pipe of the heat exchange internals; at the same time, the height of the wedge pad assembly is adjusted by adjusting the position between the upper wedge pad and the lower wedge pad, thereby adjusting the height of the flange seat at the location of the wedge pad assembly, so that the flange seat is concentric with the water supply pipe at the bottom of the heat exchange internals;

[0020] After the heat exchanger internals are installed into the frame, the telescopic mechanism pushes the positioning wheel to extend, and the positioning wheel supports the outer edge of the heat exchanger internals, so that the heat exchanger internals are concentric with the assembly platform; the outlet pipe of the heat exchanger internals is installed into the clamping hoop for fixation, the bottom of the heat exchanger internals is supported on the flange seat, the water supply pipe of the heat exchanger internals is installed into the lower clamping sleeve of the positioning hole, and then the upper clamping sleeve is installed, and the upper clamping sleeve presses the water supply pipe;

[0021] Then the heat exchange components can be cleaned during production;

[0022] (2) When producing the outer shell in the lead-lined clean production room:

[0023] After the outer shell is installed into the frame, the upper part of the outer shell is supported on the outer shell support fixture. The telescopic mechanism pushes the positioning wheel to extend, and the positioning wheel supports the outer edge of the outer shell, so that the outer shell and the assembly table remain concentric. Then the outer shell can be cleaned.

[0024] (3) When performing final assembly in the final assembly clean production room:

[0025] After the outer shell produced in the lead room clean production room is installed into the frame of the final assembly clean production room, the telescopic mechanism pushes the positioning wheel to extend, and the positioning wheel supports the outer edge of the outer shell, so that the outer shell and the assembly platform remain concentric; then the heat exchange internals produced in the lead room clean production room are assembled into the outer shell.

[0026] Compared with the prior art, the present invention has the following advantages and effects:

[0027] 1. In order to ensure the concentricity of the evaporator components and the assembly stand, a centering and positioning mechanism is set up. This mechanism supports the outer edge of the evaporator components during component production, and fixes the centering and positioning mechanism after centering, so that the components and the assembly stand remain concentric and improve the assembly accuracy.

[0028] 2. The assembly stand is equipped with internal component support fixtures, water supply pipe support fixtures, and outer shell support fixtures to support the various components of the evaporator, ensuring the stability and precise positioning of the components during the assembly process and improving assembly efficiency. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the planar layout of an embodiment of the present invention.

[0030] Figure 2 This is a side view of the clean production room of the lead room according to an embodiment of the present invention.

[0031] Figure 3 This is a schematic diagram of the structure of an L-shaped door according to an embodiment of the present invention.

[0032] Figure 4 This is a schematic diagram of the assembly stand used for the production of heat exchange internals according to an embodiment of the present invention.

[0033] Figure 5 for Figure 4 A side view structural diagram.

[0034] Figure 6 for Figure 4 A schematic diagram of the AA-direction structure.

[0035] Figure 7 This is a schematic diagram of the assembly stand used for shell production according to an embodiment of the present invention.

[0036] Figure 8 for Figure 7 A side view structural diagram.

[0037] Figure 9 for Figure 7 A schematic diagram of the BB-direction structure.

[0038] Figure 10 This is a schematic diagram of the assembly stand used for assembling heat exchange internals and outer shell according to an embodiment of the present invention.

[0039] Figure 11 This is a schematic diagram of the centering and positioning mechanism according to an embodiment of the present invention.

[0040] Figure 12 This is a schematic diagram of the structure of the water supply pipe support fixture according to an embodiment of the present invention.

[0041] Figure 13 This is a schematic diagram of the water supply pipe fixture according to an embodiment of the present invention.

[0042] Figure 14 for Figure 13 A top-view structural diagram.

[0043] Figure 15 for Figure 13 A partial structural diagram.

[0044] Figure 16 This is a schematic diagram of the pipe fitting according to an embodiment of the present invention.

[0045] Figure 17 for Figure 16 A side view structural diagram.

[0046] Figure 18 for Figure 16 A top-view structural diagram. Detailed Implementation

[0047] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. The following embodiments are explanations of the present invention, but the present invention is not limited to the following embodiments.

[0048] I. The complete clean production device for a nuclear power high-temperature reactor evaporator according to an embodiment of the present invention includes an assembly stand 1, a lead room clean production room 2, and a final assembly clean production room 3.

[0049] The number of lead-room clean production rooms 2 and final assembly clean production rooms 3 can be modularly configured as needed. In this embodiment, three lead-room clean production rooms 2 and one final assembly clean production room 3 are provided. The doors of both lead-room clean production rooms 2 and final assembly clean production rooms 3 are sliding doors, and the roofs are retractable roofs to facilitate the hoisting of workpieces.

[0050] The lead-lined clean production room 2 is mainly used for the clean production of heat exchange internals and outer shells of the evaporator, including assembly, welding, heat treatment, and flaw detection, as well as subsequent final assembly (including pressurization) related processes. In addition, the butt welding of heat exchange tubes and tube-to-tube sheet welding of the evaporator require RT testing, and the welding positions are fixed and cannot be moved. Therefore, the lead-lined clean production room 2 must have radiation shielding function. Thus, a production lead room 4 is set up in the lead-lined clean production room 2. To facilitate the hoisting of workpieces, the roof and door of the production lead room 4 are integrated to form an L-shaped door 41. The L-shaped door 41 includes an inner L-shaped lead door 411 and an outer L-shaped partition door 412. The inner L-shaped lead door 411 and the outer L-shaped partition door 412 are set inside and outside, and are both independently and horizontally installed on the production lead room 4. The inner L-shaped lead door 411 is covered with a 6mm lead plate perpendicular to the ground, and a 2.5mm lead plate is laid on top, which serves as a protective measure during flaw detection; the outer L-shaped partition door 412 is not covered with a lead plate, and mainly serves as a partition to ensure the temperature and humidity in the assembly area.

[0051] The final assembly clean production room 3 is mainly used for the overall assembly of the heat exchange internals and outer shell of the evaporator and related processes (including air pressure). In order to reduce the height of the plant, a pit is set in the final assembly clean production room 3.

[0052] The assembly stand 1 includes a frame 11, a centering and positioning mechanism 12, an internal component support fixture 13, a water supply pipe support fixture 14, an outer shell support fixture 15, and a work platform 16.

[0053] Frame 11 adopts a profile structure, using steel structure welded into a frame form as the main load-bearing component, ensuring the load-bearing capacity and stability of the platform.

[0054] The work platform 16 is fixedly mounted on the frame 11 and is used for hoisting the evaporator components and subsequent assembly work.

[0055] The centering and positioning mechanism 12 ensures the concentricity of the workpiece with the stand during welding. The centering and positioning mechanism 12 includes a positioning wheel 124 and a telescopic mechanism. The telescopic mechanism is mounted on the frame 11, and the positioning wheel 124 is mounted on the telescopic mechanism, which drives the positioning wheel 124 to extend and retract. The telescopic mechanism includes an electric push rod 121, a swing positioning bracket 122, a pull rod assembly 123, the positioning wheel 124, and a wheel bracket 125. The swing positioning bracket 122 is fixedly mounted on the frame 11. Both the electric push rod 121 and the pull rod assembly 123 are mounted on the swing positioning bracket 122, and the electric push rod 121 is connected to the pull rod assembly 123. The wheel bracket 125 is hinged to the pull rod assembly 123. When the positioning wheel 124 contacts the workpiece, the wheel bracket 125 can swing, allowing the positioning wheel 124 to better conform to the workpiece. The positioning wheel 124 is mounted on the pull rod assembly 123 and is a conical wheel that conforms to the shape of the workpiece. Multiple centering and positioning mechanisms 12 are provided and arranged in a ring. The centering and positioning mechanism 12 is normally in a tightened state. During workpiece production, the electric push rod 121 pushes the pull rod assembly 123 to unfold. The pull rod assembly 123 drives the wheel bracket 125 and the positioning wheel 124 to extend. The positioning wheel 124 supports the outer edge of the workpiece. After centering, the electric push rod 121 is locked to keep the workpiece concentric with the platform.

[0056] The internal component support fixture 13 is detachably mounted on the top of the frame 11. The internal component support fixture 13 includes a support frame 131 and a pipe end fixture 132. The support frame 131 is detachably mounted on the top of the frame 11, and the pipe end fixture 132 is mounted on the support frame 131. It includes a fixed base 133, a horizontal sliding seat 134, a horizontal adjusting bolt 135, a vertical adjusting plate 136, a vertical adjusting bolt 137, a clamp 138, a sliding guide bar 139, a horizontal fixing bolt 1310, and a vertical fixing bolt 1311. A fixed base 133 is fixedly mounted on a support frame 131; a transverse sliding seat 134 is laterally mounted on the fixed base 133 via a sliding guide 139 and is fixed by a transverse fixing bolt 1310; a transverse adjusting bolt 135 is mounted on the fixed base 133 and connected to the transverse sliding seat 134; a vertical adjusting plate 136 is laterally mounted on the transverse sliding seat 134 and fixed by a vertical fixing bolt 1311; a vertical adjusting bolt 137 is mounted on the transverse sliding seat 134 and connected to the vertical adjusting plate 136; a clamping clamp 138 is fixedly mounted on the vertical adjusting plate 136. A pair of internal component support fixtures 13 are provided, respectively used to support the outlet pipes on both sides of the upper part of the heat exchange internal components.

[0057] A water supply pipe support fixture 14 is detachably mounted on the bottom of the frame 11. The water supply pipe support fixture 14 includes a support base 141 and a water supply pipe fixture 142. The support base 141 is detachably mounted on the bottom of the frame 11, and the water supply pipe fixture 142 is mounted on the support base 141. The water supply pipe fixture 142 includes a flange seat 143 and an adjusting clamping assembly, which includes a wedge-shaped gasket assembly and a clamping sleeve assembly. The flange seat 143 is mounted on the support base 141 and fixed with bolts; a positioning hole 1431 is provided in the center of the flange seat 143. A wedge gasket assembly is disposed between the flange seat 143 and the support seat 141. It includes an upper wedge gasket 144 and a lower wedge gasket 145, which are stacked together. The overlapping surface between the upper and lower wedge gaskets 144 and 145 is inclined. Therefore, by adjusting the position between the upper and lower wedge gaskets 144 and 145, the height of the wedge gasket assembly can be adjusted. This allows for adjustable height of the flange seat 143 at the location of the wedge gasket assembly, achieving flexible leveling. A clamping sleeve assembly is disposed on the flange seat 143, and includes an upper clamping sleeve 146 and a lower clamping sleeve 147. The lower clamping sleeve 147 is fixedly mounted on the wall of the positioning hole 1431 of the flange seat 143. The upper clamping sleeve 146 is bolted to the flange seat 143. After the upper clamping sleeve 146 extends into the positioning hole 1431, it overlaps with the lower clamping sleeve 147. The overlapping surface between the upper clamping sleeve 146 and the lower clamping sleeve 147 is an inclined surface. Therefore, when the upper clamping sleeve 146 is pressed down, it moves inward, which can better clamp the workpiece. Multiple clamping components are adjusted in a ring arrangement. This allows for adjustment of the height of the flange seat 143 at multiple positions, making the flange seat 143 more compatible with the workpiece, and also allowing for clamping and fixing the workpiece at multiple positions.

[0058] The outer shell support fixture 15 is detachably mounted on the top of the frame 11, and a jack 151 is mounted on the outer shell support fixture 15.

[0059] Assembly benches 1 are installed in both the lead production room 4 and the final assembly clean production room 3. Internal component support fixtures 13, water supply pipe support fixtures 14, and outer shell support fixtures 15 can be selectively mounted on the frame 11. In the lead production room 4, when the assembly bench 1 is used for the production of heat exchange internal components, the frame 11 is equipped with internal component support fixtures 13 and water supply pipe support fixtures 14, but not the outer shell support fixture 15. Conversely, when used for the outer shell, the frame 11 is equipped with outer shell support fixtures 15, but not the internal component support fixtures 13 and water supply pipe support fixtures 14. In the final assembly clean production room 3, the assembly bench 1 is used for the assembly of heat exchange internal components and the outer shell; the frame 11 is equipped with the outer shell support fixture 15, but not the internal component support fixtures 13 and water supply pipe support fixtures 14.

[0060] II. The operating method of the complete clean production device for a nuclear power high-temperature reactor evaporator according to an embodiment of the present invention includes the following steps:

[0061] (1) When producing heat exchange internals in lead-lined clean production room 2:

[0062] The lateral position of the lateral sliding seat 134 on the fixed base 133 is adjusted by the lateral adjusting bolt 135. After the lateral sliding seat 134 moves into place, it is fixed by the lateral fixing bolt 1310. The vertical position of the vertical adjusting plate 136 on the lateral sliding seat 134 is adjusted by the vertical adjusting bolt 137. After the vertical adjusting plate 136 moves into place, it is fixed by the vertical fixing bolt 1311. In this way, the vertical and lateral positions of the clamp 138 are adjusted so that the clamp 138 matches the position of the inlet pipe of the heat exchange internals. At the same time, according to the size and position of the heat exchange internals, the height of the wedge pad assembly is adjusted by adjusting the position between the upper wedge pad 144 and the lower wedge pad 145, thereby adjusting the height of the flange seat 143 at the position of the wedge pad assembly, so that the flange seat 143 is concentric with the water supply pipe at the bottom of the heat exchange internals. After adjustment, the flange seat 143 and the support seat 141 are fixed by bolts.

[0063] After the heat exchanger internals are hoisted into the frame 11, the electric push rod 121 pushes the pull rod assembly 123 to unfold. The pull rod assembly 123 drives the wheel bracket 125 and the positioning wheel 124 to extend. The positioning wheel 124 supports the outer edge of the heat exchanger internals. After centering, the electric push rod 121 is locked to keep the heat exchanger internals concentric with the platform. The outlet pipes on both sides of the upper part of the heat exchanger internals are respectively installed into the clamps 138 of a pair of internal support fixtures 13 for fixation. The bottom of the heat exchanger internals is supported on the flange seat 143. The water supply pipe at the bottom of the heat exchanger internals is installed into the lower clamping sleeve 147 of the positioning hole 1431, and then the upper clamping sleeve 146 is installed. The upper clamping sleeve 146 and the support seat 141 are fixed by bolts. The upper clamping sleeve 146 presses the water supply pipe.

[0064] Then the heat exchange components can be cleaned.

[0065] (2) When producing the outer shell in the lead-lined clean production room 2:

[0066] After the outer casing is hoisted into the frame 11, its upper part is supported on the casing support fixture 15. Jacks 151 hold the casing in place, and the installation angle of the casing can be adjusted using jacks 151. Simultaneously, electric push rod 121 pushes the pull rod assembly 123 to unfold. The pull rod assembly 123 drives the wheel bracket 125 and positioning wheel 124 to extend. The positioning wheel 124 supports the outer edge of the casing. After alignment, the electric push rod 121 is locked, ensuring that the casing and the platform remain concentric. Then, the casing can be cleaned during production.

[0067] (3) When performing final assembly in the final assembly clean production room 3:

[0068] After the outer shell produced in the lead-room clean production chamber 2 is hoisted and installed into the frame 11 of the final assembly clean production chamber 3, the upper part of the outer shell is supported on the outer shell support fixture 15. Jacks 151 hold the outer shell in place, and the installation angle of the outer shell can be adjusted by jacks 151. At the same time, electric push rod 121 pushes the pull rod assembly 123 to unfold. The pull rod assembly 123 drives the wheel bracket 125 and positioning wheel 124 to extend. The positioning wheel 124 supports the outer edge of the outer shell. After alignment, the electric push rod 121 is locked to keep the outer shell concentric with the platform. Then, the heat exchange internals produced in the lead-room clean production chamber 2 are assembled into the outer shell.

[0069] The specific embodiments of the present invention have been described in detail above. For those skilled in the art, several improvements and modifications can be made to the present invention without departing from the principle of the present invention, and these improvements and modifications also fall within the protection scope of the claims of the present invention.

Claims

1. A complete clean production apparatus for a nuclear power high-temperature reactor evaporator, comprising a lead-lined clean production room and a final assembly clean production room; both the lead-lined clean production room and the final assembly clean production room are equipped with assembly frames, each assembly frame comprising a frame; characterized in that: The assembly stand also includes a centering and positioning mechanism, an internal component support fixture, a water supply pipe support fixture, and an outer shell support fixture; the centering and positioning mechanism includes a positioning wheel and a telescopic mechanism, the telescopic mechanism is mounted on the frame, and the positioning wheel is mounted on the telescopic mechanism; Both the internal support fixture and the outer shell support fixture are detachably mounted on the top of the frame; The internal support fixture includes a support frame and a pipe fitting. The support frame is detachably mounted on the top of the frame. The pipe fitting includes a fixed base, a horizontal sliding seat, a horizontal adjusting bolt, a vertical adjusting plate, a vertical adjusting bolt, and a clamp. The fixed base is fixedly mounted on the support frame. The horizontal sliding seat moves laterally on the fixed base. The horizontal adjusting bolt is connected to the horizontal sliding seat. The vertical adjusting plate moves up and down on the horizontal sliding seat. The vertical adjusting bolt is connected to the vertical adjusting plate. The clamp is fixedly mounted on the vertical adjusting plate. The water supply pipe support fixture is detachably mounted at the bottom of the frame. The system includes a support base and a water supply pipe fixture. The support base is detachably mounted at the bottom of the frame. The water supply pipe fixture includes a flange seat and an adjusting clamping assembly. The adjusting clamping assembly includes a wedge pad assembly and a clamping sleeve assembly. The flange seat is mounted on the support base and has a positioning hole. The wedge pad assembly is located between the flange seat and the support base and includes an upper wedge pad and a lower wedge pad stacked together. The clamping sleeve assembly includes an upper clamping sleeve and a lower clamping sleeve. The lower clamping sleeve is fixedly mounted in the positioning hole, and the upper clamping sleeve is fixed on the flange seat. After the upper clamping sleeve extends into the positioning hole, it stacks together with the lower clamping sleeve. The overlapping surface between the upper wedge-shaped pad and the lower wedge-shaped pad is an inclined surface; the overlapping surface between the upper clamping sleeve and the lower clamping sleeve is an inclined surface; The telescopic mechanism includes an electric push rod, a swing positioning bracket, a pull rod assembly, and a wheel bracket; the swing positioning bracket is fixedly mounted on the frame; both the electric push rod and the pull rod assembly are mounted on the swing positioning bracket, and the electric push rod is connected to the pull rod assembly; the wheel bracket is hinged to the pull rod assembly; and the positioning wheel is mounted on the pull rod assembly. A production lead room is set up in the lead room clean production room, and the assembly frame is set up in the production lead room; the roof and the door of the production lead room are connected as one to form an L-shaped door, the L-shaped door includes an inner L-shaped lead door and an outer L-shaped partition door, the inner L-shaped lead door and the outer L-shaped partition door are set inside and outside, and are both set up separately and horizontally on the production lead room; lead plates are laid on the inner L-shaped lead door.

2. The complete clean production apparatus for a nuclear power high-temperature reactor evaporator according to claim 1, characterized in that: The internal component support fixture also includes horizontal fixing bolts and vertical fixing bolts. The horizontal sliding seat is fixed to the fixed base by the horizontal fixing bolts, and the vertical adjusting plate is fixed to the horizontal sliding seat by the vertical fixing bolts.

3. The complete clean production apparatus for a nuclear power high-temperature reactor evaporator according to claim 1, characterized in that: The outer shell support fixture is equipped with a jack.

4. The complete clean production apparatus for a nuclear power high-temperature reactor evaporator according to claim 1, characterized in that: The assembly stand also includes a work platform, which is fixedly mounted on the frame.

5. The complete clean production apparatus for a nuclear power high-temperature reactor evaporator according to claim 1, characterized in that: The aforementioned adjusting clamping components are multiple and arranged in a ring; the aforementioned centering and positioning mechanisms are multiple and arranged in a ring.

6. A method for operating a complete set of clean production equipment for a nuclear power high-temperature reactor evaporator as described in any one of claims 1-5, characterized in that: Includes the following steps: (1) When producing heat exchange internals in the lead-lined clean production room: The lateral position of the lateral sliding seat on the fixed base is adjusted by adjusting the lateral adjusting bolts, and the vertical position of the vertical adjusting plate on the lateral sliding seat is adjusted by adjusting the vertical adjusting bolts, thereby adjusting the vertical and lateral positions of the clamp to match the position of the inlet pipe of the heat exchange internals; at the same time, the height of the wedge pad assembly is adjusted by adjusting the position between the upper wedge pad and the lower wedge pad, thereby adjusting the height of the flange seat at the location of the wedge pad assembly, so that the flange seat is concentric with the water supply pipe at the bottom of the heat exchange internals; After the heat exchanger internals are installed into the frame, the telescopic mechanism pushes the positioning wheel to extend, and the positioning wheel supports the outer edge of the heat exchanger internals, so that the heat exchanger internals are concentric with the assembly platform; the outlet pipe of the heat exchanger internals is installed into the clamping hoop for fixation, the bottom of the heat exchanger internals is supported on the flange seat, the water supply pipe of the heat exchanger internals is installed into the lower clamping sleeve of the positioning hole, and then the upper clamping sleeve is installed, and the upper clamping sleeve presses the water supply pipe; Then the heat exchange internals are cleaned during production. (2) When producing the outer shell in the lead-lined clean production room: After the outer shell is installed into the frame, the upper part of the outer shell is supported on the outer shell support fixture. The telescopic mechanism pushes the positioning wheel to extend, and the positioning wheel supports the outer edge of the outer shell, so that the outer shell and the assembly table remain concentric. Then the outer shell is cleaned during production. (3) When performing final assembly in the final assembly clean production room: After the outer shell produced in the lead room clean production room is installed into the frame of the final assembly clean production room, the telescopic mechanism pushes the positioning wheel to extend, and the positioning wheel supports the outer edge of the outer shell, so that the outer shell and the assembly platform remain concentric; then the heat exchange internals produced in the lead room clean production room are assembled into the outer shell.

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