End face seal suction gun device for high temperature gas-cooled reactor

Abstract

The present disclosure belongs to the field of nuclear power maintenance technology, and specifically relates to a high-temperature gas-cooled reactor end face sealing gun suction device. The embodiment of the present disclosure adjusts the position of at least one gun suction assembly through a rotating assembly and a lifting assembly, so that the gun suction port structure of the gun suction assembly can be flexibly aligned with the end face of the throttling assembly, thereby realizing helium leak detection. The direct docking of the gun suction port structure with the end face of the throttling assembly avoids the leakage caused by the gap between the throttling assembly and the anti-loosening clamp ring. Therefore, when detecting helium leaks, there is no need to disassemble the throttling assembly, the anti-loosening plate, the anti-loosening clamp ring and the fixing nut, which greatly reduces the time spent by personnel at the manhole of the evaporator, thereby reducing the radiation dose of personnel.

Description

Technical Field

[0001] The invention belongs to the technical field of nuclear power maintenance, and in particular relates to an end face sealing gun suction device for a high temperature gas-cooled reactor. Background Art

[0002] The high temperature gas-cooled reactor is an advanced unit independently developed by my country using a new generation of nuclear power technology. The inspection technology and equipment for the heat transfer tubes of the steam generator are the direction that needs to be vigorously developed in the future. Since its steam generator is completely different from the conventional pressurized water reactor, its operating environment, structure, especially the tube sheet structure are different. At present, there is no corresponding inspection technology and special inspection equipment. The structure of the heat transfer tube of the steam generator of the high temperature gas-cooled reactor is also different from that of the conventional pressurized water reactor. It is a spiral coil with a small bending radius, and it cannot be inspected using the conventional eddy current inspection method for heat transfer tubes. In the related technology, helium mass spectrometry is used for inspection. Usually, the suction gun is connected to the heat transfer tube, and helium is pumped to the helium mass spectrometer leak detector to analyze the helium concentration in the instrument, so as to check whether there is a leak in each heat transfer tube. Summary of the invention

[0003] In order to overcome the problems existing in the related art, a high-temperature gas-cooled reactor end face sealing gun suction device is provided.

[0004] According to one aspect of an embodiment of the present disclosure, a high-temperature gas-cooled reactor end face sealing gun suction device is provided, the high-temperature gas-cooled reactor end face sealing gun suction device comprising: a positioning assembly, a rotating assembly, a lifting assembly, at least one gun suction assembly and a bracket;

[0005] The positioning assembly is connected in the water supply chamber of the high temperature gas-cooled reactor, the positioning assembly is connected to the rotating assembly, the rotating assembly is connected to the lifting assembly, and the at least one suction gun assembly is connected to the lifting assembly through the bracket;

[0006] The positioning assembly can drive the rotating assembly together with the lifting assembly and the at least one suction gun assembly to move linearly in the horizontal direction;

[0007] The rotating assembly can drive the lifting assembly together with the at least one suction gun assembly to rotate in a horizontal direction;

[0008] The lifting assembly is capable of driving the at least one suction gun assembly to move linearly in a vertical direction;

[0009] Each suction gun assembly is a hollow structure, a suction gun port structure is arranged at the top of each suction gun assembly, the bottom end of each suction gun assembly is connected to the helium leak detection locator through an air pipe, the suction gun port structure of each suction gun assembly is connected to the end face of a throttling assembly, and when the helium leak detection locator is working, gas is extracted from the throttling assembly connected to the suction gun assembly through each suction gun assembly.

[0010] In a possible implementation, the lifting assembly includes: a screw rod, a screw rod nut and a lifting motor;

[0011] The bracket is provided with a plurality of first through holes and a second through hole, each suction gun assembly is connected to a first through hole, the screw rod passes through the second through hole, the screw rod nut is connected to the screw rod and connected to the lower end of the bracket;

[0012] The lifting motor is connected to the screw rod. When the lifting motor is in operation, it can drive the screw rod to rotate, so that the screw rod nut drives the bracket and the at least one suction gun assembly to move along the screw rod.

[0013] In a possible implementation, the high temperature gas-cooled reactor end face sealing gun suction device further includes: a plurality of springs;

[0014] A baffle is provided at the upper end of the corresponding first through hole on each suction gun assembly;

[0015] Each spring surrounds a suction gun assembly, and each spring is located between a baffle plate of the surrounding suction gun assembly and an upper surface of the bracket;

[0016] Each suction gun assembly can move relative to the bracket. When the lifting motor drives the screw nut through the screw to lift the bracket upward, the bracket drives the suction gun assembly corresponding to the spring to move upward by squeezing each spring.

[0017] In a possible implementation, the high temperature gas-cooled reactor end face sealing gun suction device further includes: a first base, a bearing, and a second base;

[0018] The lifting assembly is connected to the first base;

[0019] The rotating assembly is arranged on the second base, and the first base is connected to the second base through the bearing;

[0020] The rotating assembly includes a rotating motor, which is connected to the bearing. When the rotating motor is in operation, it can drive the first base and the lifting assembly to rotate through the bearing.

[0021] In a possible implementation, the high temperature gas-cooled reactor end face sealing gun suction device further includes: a plurality of linear bearings and a bearing base;

[0022] The bearing base is fixedly connected to the first base;

[0023] The bearing base is provided with a plurality of third through holes, and each third through hole is connected with a linear bearing;

[0024] Each sniffer assembly is arranged in a linear bearing.

[0025] In a possible implementation, the high temperature gas-cooled reactor end face sealing gun suction device further includes: a camera;

[0026] The camera is arranged at the upper end of the bearing base, and is used to collect an image of the relative position between the upper end of the at least one suction gun assembly and the high temperature gas-cooled stack tube plate.

[0027] In a possible implementation, the relative position between the camera and the suction port of each suction gun structure is matched with the relative position of each suction gun assembly of the high temperature gas-cooled reactor.

[0028] In a possible implementation, the gun suction port structure includes a gun suction pipe, a gun suction port, a sealing gasket and an end cover;

[0029] The gun suction port is a tubular structure, and the gun suction port can be threadedly connected to the gun suction pipe, and the outer side of the upper end of the gun suction port has a step portion extending toward the outside;

[0030] The sealing gasket is a circular ring structure, and the sealing gasket is arranged at the upper end of the step portion;

[0031] The end cover is a cylindrical structure, a through hole is provided on the top of the end cover, and the end cover can be buckled on the upper end of the step portion and has an interference fit with the upper end of the step portion.

[0032] In a possible implementation, the high temperature gas-cooled reactor end face sealing gun suction device further includes: a limit switch;

[0033] The limit switch is used to control the lifting motor to start or stop working. The movable end of the limit switch is connected to the lead screw nut, and the fixed end of the limit switch is connected to the first base. When the lead screw nut moves to a preset position, the movable end is in the off position, so that the lifting motor is powered off.

[0034] In a possible implementation, a pneumatic connector is provided at the bottom end of each suction gun assembly.

[0035] The beneficial effect of the present invention is that: the embodiment of the present disclosure adjusts the position of at least one suction gun assembly through the rotating assembly and the lifting assembly, so that the suction gun port structure of the suction gun assembly can be flexibly aligned with the end face of the throttling assembly, thereby realizing the helium leak detection operation. The direct docking of the suction gun port structure with the end face of the throttling assembly avoids the leakage caused by the gap between the throttling assembly and the anti-loosening clamp ring, so that when detecting helium leaks, there is no need to disassemble the throttling assembly, the anti-loosening plate, the anti-loosening clamp ring and the fixing nut, which greatly reduces the time spent by personnel at the manhole of the evaporator, thereby reducing the radiation dose of personnel. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 It is a schematic diagram of a high temperature gas-cooled reactor end face sealing gun suction device according to an exemplary embodiment.

[0037] Figure 2 It is a schematic diagram of a high temperature gas-cooled reactor tube sheet in the related art.

[0038] Figure 3 It is a cross-sectional view of a high-temperature gas-cooled reactor tube sheet in the related art.

[0039] Figure 4 The present invention is a schematic diagram showing the connection between a lifting assembly, a rotating assembly and a suction gun assembly in a high-temperature gas-cooled reactor end face sealing suction gun device according to an exemplary embodiment.

[0040] Figure 5 The present invention is a partial cross-sectional view of a gun suction device for sealing an end face of a high temperature gas-cooled reactor according to an exemplary embodiment.

[0041] Figure 6 The present invention is a partial cross-sectional view of a gun suction device for sealing an end face of a high temperature gas-cooled reactor according to an exemplary embodiment.

[0042] Figure 7 The present invention is a partial cross-sectional view of a gun suction device for sealing an end face of a high temperature gas-cooled reactor according to an exemplary embodiment.

[0043] Figure 8 The figure is an exploded view of a gun suction port structure of an end face sealing gun suction device for a high temperature gas-cooled reactor according to an exemplary embodiment.

[0044] Fig. 9 It is a schematic diagram showing the connection between a gun suction port structure of an end face sealing gun suction device of a high temperature gas-cooled reactor and an end face of a corresponding throttling assembly according to an exemplary embodiment. DETAILED DESCRIPTION

[0045] The present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0046] Figure 1 FIG. 1 is a schematic diagram of a high temperature gas-cooled reactor end face sealing gun suction device according to an exemplary embodiment. Figure 1 As shown, the high temperature gas-cooled reactor end face sealing gun suction device may include: a positioning component 13, a rotating component 14, a lifting component 12, at least one gun suction component 11 and a bracket 17;

[0047] Generally speaking, Figure 2 and Figure 3As shown, the installation form of the throttling assembly of the steam generator feed water inlet is composed of a throttling assembly 20 and an anti-loosening assembly. The anti-loosening assembly may include an anti-loosening plate 21, an anti-loosening clamp ring 23 and a fixing nut 22 (the throttling assembly may be installed in two forms, with a fixing nut and without a fixing nut). The loosening plate may be arranged on the lower surface of the tube sheet 24. Due to the presence of the anti-loosening plate 21, there is a gap between the throttling assembly 20 and the anti-loosening clamp ring 23, and no seal is formed. Therefore, when collecting helium, external air can easily enter the suction gun through the gap between the anti-loosening clamp ring 23 and the throttling assembly 20, and the airtightness requirements of the helium leak detection and exhaust system of the device cannot be guaranteed, which affects the accuracy of the detection results. With respect to such a throttling assembly installation form, how to effectively collect the gas of the throttling assembly becomes a technical problem that needs to be solved urgently.

[0048] Figure 4 FIG. 1 is a schematic diagram showing the connection of a lifting assembly, a rotating assembly and a suction gun assembly in a high temperature gas-cooled reactor end face sealing suction gun device according to an exemplary embodiment. Figure 1 and Figure 4 As shown, the positioning assembly 13 is connected in the water supply chamber 10 of the high temperature gas-cooled reactor, the positioning assembly 13 can be connected to the rotating assembly 14, the rotating assembly 14 can be connected to the lifting assembly 12, and at least one suction gun assembly 11 can be connected to the lifting assembly 12 through a bracket 17;

[0049] The positioning assembly 13 can drive the rotating assembly 14 together with the lifting assembly 12 and at least one suction gun assembly 11 to move linearly in the horizontal direction; the rotating assembly 14 can drive the lifting assembly 12 together with at least one suction gun assembly 11 to rotate in the horizontal direction; the lifting assembly 12 can drive at least one suction gun assembly 11 to move linearly in the vertical direction. Each suction gun assembly 11 can be a hollow structure, and a suction gun port structure 111 can be provided at the top of each suction gun assembly 11. The bottom end of each suction gun assembly 11 is connected to a helium leak detection locator (not shown in the figure) through an air pipe. For example, the position of each suction gun assembly 11 can be adjusted by the positioning assembly 13 and / or the rotating assembly 14, until the suction gun port structure 111 of each suction gun assembly 11 is aligned with the end face of a throttling assembly 20 (wherein, when the high-temperature gas-cooled reactor end face sealing suction gun device includes multiple suction gun assemblies, the relative position of the axis of each suction gun assembly can be consistent with the relative position of the axis of the throttling assembly. When the suction gun port structure of one suction gun assembly is aligned with the end face of a throttling assembly, the suction gun port structures of other suction gun assemblies can also be aligned with the end face of a throttling assembly). Then, the lifting assembly 12 can be controlled to lift each suction gun assembly 11, so that the suction gun port structure 111 of each suction gun assembly 11 is connected to the aligned end face of the throttling assembly 20.

[0050] The helium leak detection locator may have an air pump. When the helium leak detection locator is working, gas can be collected from the throttling assembly connected to the sniffer assembly 11 through each sniffer assembly 11 .

[0051] In a possible implementation, the bottom end of each suction gun assembly can be connected to a pneumatic connector, and each suction gun assembly can be quickly installed through the pneumatic connector and the air pipe. The embodiment of the present disclosure does not limit the type of the pneumatic connector.

[0052] The disclosed embodiment adjusts the position of at least one suction gun assembly by rotating the assembly and lifting the assembly, so that the suction gun port structure of the suction gun assembly can be flexibly aligned with the end face of the throttling assembly, thereby realizing the helium leak detection operation. The direct docking of the suction gun port structure with the end face of the throttling assembly avoids the leakage caused by the gap between the throttling assembly and the anti-loosening clamp ring, so that when detecting helium leaks, there is no need to disassemble the throttling assembly, the anti-loosening plate, the anti-loosening clamp ring and the fixing nut, which greatly reduces the time spent by personnel at the manhole of the evaporator, thereby reducing the radiation dose of personnel.

[0053] Figure 5 The present invention is a partial cross-sectional view of a gun suction device for sealing an end face of a high temperature gas-cooled reactor according to an exemplary embodiment. Figure 6 FIG. 1 is a partial cross-sectional view of a high temperature gas-cooled reactor end face sealing gun suction device according to an exemplary embodiment. Figure 5 and Figure 6 As shown, the lifting assembly may include: a screw 121, a screw nut 122 and a lifting motor 123;

[0054] The bracket 17 may be provided with a plurality of first through holes and a second through hole, each suction gun assembly 11 may be connected to a first through hole, the screw rod 121 may pass through the second through hole, the screw rod nut 122 is connected to the screw rod 121, and is connected to the lower end of the bracket 17; Figure 6 As shown, the output end of the lifting motor 123 can be connected to the bottom end of the screw rod 121 through the first transmission belt 120 (it should be noted that the lifting motor and the screw rod can also be transmitted through gears and other devices, and the embodiment of the present disclosure does not limit the transmission method between the lifting motor and the screw rod). When the lifting motor 123 is working, it can drive the screw rod 121 to rotate, so that the screw nut 122 drives the bracket 17 together with at least one suction gun assembly 11 to move along the screw rod 121.

[0055] In one possible implementation, Figure 5As shown, the end face sealing gun suction device of the high temperature gas-cooled reactor may further include: a plurality of springs 18; a baffle 112 may be provided at a position above the bracket 17 on each gun suction assembly 11; and a spring 18 may be wound around a position between the baffle 112 and the bracket 17 on each gun suction assembly 11. Each gun suction assembly 11 can pass through the corresponding first through hole and move relative to the bracket 17. When the lifting motor 123 drives the screw nut 122 through the screw 121 to lift the bracket 17 upward, the bracket 17 moves relative to the gun suction assembly 11, and the spring 18 wound around the gun suction assembly 11 may be squeezed, so that the spring 18 generates an upward thrust on the gun suction assembly 11 through the baffle 112, thereby driving the gun suction assembly 11 to move upward. In this way, the spring can be used to buffer the upward thrust of the suction gun assembly, making the upward pushing action of the suction gun assembly gentler, effectively reducing the collision between the suction gun assembly and the end face of the throttling assembly; in addition, after the suction gun port structure contacts the end face of the throttling assembly, the lifting motor can be controlled to continue working, so that the spring continues to compress, providing an upward thrust to the suction gun assembly until the suction gun port structure of the suction gun assembly is in close contact with the throttling assembly, thereby improving the sealing of the suction gun port structure and the throttling assembly.

[0056] Figure 7 FIG. 1 is a partial cross-sectional view of a high temperature gas-cooled reactor end face sealing gun suction device according to an exemplary embodiment. Figure 7 As shown, the high-temperature gas-cooled reactor end face sealing gun suction device may also include: a first base 71, a bearing 73 and a second base 72; the lifting assembly 12 may be connected to the first base 71; the rotating assembly 14 may be arranged on the second base 72, and the first base 71 may be connected to the second base through the bearing 73; the rotating assembly 14 may include a rotating motor 141, and the input end of the rotating motor 141 may be connected to the bearing through a second transmission belt 142. When the rotating motor 14 is working, it can drive the first base 71 and the lifting assembly 12 to rotate through the bearing.

[0057] In one possible implementation, Figure 5 As shown, the high temperature gas-cooled reactor end face sealing gun suction device may also include: a plurality of linear bearings 191 and a bearing base 192;

[0058] The bearing base 192 can be fixedly connected to the first base ( Figure 5 A plurality of third through holes are provided on the bearing base 192, and a linear bearing 191 can be connected to each of the third through holes; each suction gun assembly 11 can be arranged in a linear bearing 191. In this way, the movement track of the suction gun assembly can be limited by the bearing base to prevent the suction gun assembly from tilting, and the friction generated during the relative movement between the suction gun assembly and the bearing base can be effectively reduced by the linear bearing.

[0059] In one possible implementation, Figure 4 As shown, the high temperature gas-cooled reactor end face sealing gun suction device may also include: a camera 15; the camera 15 is arranged at the upper end of the bearing base, and is used to collect an image of the relative position between the upper end of at least one gun suction assembly and the high temperature gas-cooled reactor tube plate.

[0060] In a possible implementation, the relative position between the camera and the suction port of each suction gun structure can be adapted to the relative position of each suction gun assembly of the high temperature gas-cooled reactor. For example, the axial distance between the camera and the suction port of each suction gun structure can be consistent with the axial distance of each suction gun assembly of the high temperature gas-cooled reactor, the positioning camera can be installed at the center of the suction gun assembly, and the axis of the camera can coincide with the rotation center of the suction gun assembly. When the suction gun assembly moves to the required hole position of the throttling assembly, the positioning camera will automatically capture the relative position image of the upper positioning hole and transmit the image to the host computer in real time. The host computer analyzes and calculates the image to obtain the relative position deviation between the positioning camera center (i.e., the rotation center of the suction gun assembly) and the positioning hole, and finally converts it into a motion command of the rotating assembly and / or the lifting assembly to achieve position deviation compensation of the suction gun assembly and complete the precise positioning of the suction gun assembly.

[0061] Figure 8 FIG. 1 is an exploded view of a gun suction port structure of a high temperature gas-cooled reactor end face sealing gun suction device according to an exemplary embodiment. Figure 8 As shown, the gun suction port structure may include a gun suction tube 80, a gun suction port 81, a sealing gasket 82, and an end cap 83; the gun suction port 81 is a tubular structure, the inside of the gun suction port 81 may have a thread, and the outside of the gun suction tube 80 may also have a thread, and the gun suction port 81 can be threadedly connected with the gun suction tube 80, so as to facilitate the replacement of the gun suction port 81. The outer side of the upper end of the gun suction port 81 may have a step extending outward; the sealing gasket 82 is a circular ring structure, and the sealing gasket 82 can be arranged at the upper end of the step; the end cap 83 is a cylindrical structure, and a through hole is provided at the top of the end cap 83. The end cap 83 can be buckled on the upper end of the step, and the gasket is limited between the end cap 83 and the step by interference fit with the upper end of the step, and the gasket has the functions of buffering and sealing.

[0062] Fig. 9 1 is a schematic diagram showing the connection between the gun suction port structure of a high temperature gas-cooled reactor end face sealing gun suction device and the end face of the corresponding throttling assembly according to an exemplary embodiment. Fig. 9 As shown, the inner diameter of the air inlet of the gun suction port structure 111 can be set smaller than the inner diameter of the water inlet of the throttling resistance 20. In this way, when there is a precision deviation in the docking positioning of the gun suction port structure and the throttling component, the air inlet of the gun suction port structure can still be opposite to the water inlet of the throttling component, ensuring that the helium leak detection work can be carried out normally.

[0063] In one possible implementation, Figure 4As shown, the high-temperature gas-cooled reactor end face sealing gun suction device may also include: a limit switch 16; the limit switch 16 may be electrically connected to the lifting motor, the limit switch 16 may be used to control the lifting motor to work or stop working, the movable end of the limit switch 16 (not shown in the figure) may be connected to the lead screw nut, and the fixed end of the limit switch (not shown in the figure) may be fixedly connected to the first base, so that when the lead screw nut moves, the movable end of the limit switch may also move with the lead screw nut, and may be arranged that when the lead screw nut moves to a preset position (for example, the maximum upward displacement of the gun suction assembly), the movable end may be in the off position, so that the lifting motor is powered off, so that the gun suction assembly may be effectively prevented from excessive upward movement.

[0064] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. If these modifications and variations fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A high temperature gas-cooled reactor end face sealing gun suction device, characterized in that: The high temperature gas-cooled reactor end face sealing gun suction device comprises: a positioning assembly, a rotating assembly, a lifting assembly, at least one gun suction assembly and a bracket; The positioning assembly is connected in the water supply chamber of the high temperature gas-cooled reactor, the positioning assembly is connected to the rotating assembly, the rotating assembly is connected to the lifting assembly, and the at least one suction gun assembly is connected to the lifting assembly through the bracket; The positioning assembly can drive the rotating assembly together with the lifting assembly and the at least one suction gun assembly to move linearly in the horizontal direction; The rotating assembly can drive the lifting assembly together with the at least one suction gun assembly to rotate in a horizontal direction; The lifting assembly is capable of driving the at least one suction gun assembly to move linearly in a vertical direction; Each suction gun assembly is a hollow structure, a suction gun port structure is arranged at the top of each suction gun assembly, a bottom end of each suction gun assembly is connected to a helium leak detection locator through an air pipe, and the suction gun port structure of each suction gun assembly is butted against an end face of a throttling assembly, and when the helium leak detection locator is in operation, gas is extracted from the throttling assembly butted against the suction gun assembly through each suction gun assembly; The lifting assembly comprises: a screw rod, a screw rod nut and a lifting motor; The bracket is provided with a plurality of first through holes and a second through hole, each suction gun assembly is connected to a first through hole, the screw rod passes through the second through hole, the screw rod nut is connected to the screw rod and connected to the lower end of the bracket; The lifting motor is connected to the screw rod, and when the lifting motor is working, it can drive the screw rod to rotate, so that the screw rod nut drives the bracket together with the at least one suction gun assembly to move along the screw rod; The high temperature gas-cooled reactor end face sealing gun suction device further comprises: a plurality of springs; A baffle is provided at the upper end of the corresponding first through hole on each suction gun assembly; Each spring surrounds a suction gun assembly, and each spring is located between a baffle plate of the surrounding suction gun assembly and an upper surface of the bracket; Each suction gun assembly can move relative to the bracket, and when the lifting motor drives the screw nut through the screw to lift the bracket upward, the bracket drives the suction gun assembly corresponding to the spring to move upward by squeezing each spring; The high temperature gas-cooled reactor end face sealing gun suction device further comprises: a first base, a bearing and a second base; The lifting assembly is connected to the first base; The rotating assembly is arranged on the second base, and the first base is connected to the second base through the bearing; The rotating assembly includes a rotating motor, which is connected to the bearing. When the rotating motor is working, it can drive the first base and the lifting assembly to rotate through the bearing; The high temperature gas-cooled reactor end face sealing gun suction device further comprises: a plurality of linear bearings and a bearing base; The bearing base is fixedly connected to the first base; The bearing base is provided with a plurality of third through holes, and each third through hole is connected with a linear bearing; Each suction gun assembly is arranged in a linear bearing; The gun suction port structure comprises a gun suction pipe, a gun suction port, a sealing gasket and an end cover; The gun suction port is a tubular structure, and the gun suction port can be threadedly connected to the gun suction pipe, and the outer side of the upper end of the gun suction port has a step portion extending toward the outside; The sealing gasket is a circular ring structure, and the sealing gasket is arranged at the upper end of the step portion; The end cover is a cylindrical structure, a through hole is provided on the top of the end cover, and the end cover can be buckled on the upper end of the step portion and has an interference fit with the upper end of the step portion.

2. The end face sealing gun suction device for a high temperature gas-cooled reactor according to claim 1, characterized in that: The high temperature gas-cooled reactor end face sealing gun suction device further includes: a camera; The camera is arranged at the upper end of the bearing base, and is used to collect an image of the relative position between the upper end of the at least one suction gun assembly and the high temperature gas-cooled stack tube plate.

3. The end face sealing gun suction device for a high temperature gas-cooled reactor according to claim 2, characterized in that: The relative position between the camera and the suction port of each suction gun structure is matched with the relative position of each suction gun assembly of the high temperature gas-cooled reactor.

4. The end face sealing gun suction device for a high temperature gas-cooled reactor according to claim 1, characterized in that: The high temperature gas-cooled reactor end face sealing gun suction device further comprises: a limit switch; The limit switch is used to control the lifting motor to start or stop working. The movable end of the limit switch is connected to the lead screw nut, and the fixed end of the limit switch is connected to the first base. When the lead screw nut moves to a preset position, the movable end is in the off position, so that the lifting motor is powered off.

5. The end face sealing gun suction device for a high temperature gas-cooled reactor according to claim 1, characterized in that: A pneumatic connector is provided at the bottom end of each suction gun assembly.

Images