A dome target plate device capable of realizing front remote operation and its remote operation method

Abstract

The present invention discloses a dome target plate device capable of realizing front remote operation and a remote operation method thereof. The device includes: a target plate, a connection seat, a main support body, a cladding connection water pipe, and a cladding connection seat; the target plate includes a number of conventional target plates and two special target plates. The two special target plates are located in the middle of all the target plates, and a remote operation channel is provided thereon; the connection seat is located between the target plate and the main support body and is used to connect the main support body and the target plate; the upper part of the main support body is connected to the connection seat and is used to support the target plate. The lower part is designed with a positioning boss and a positioning inclined surface for determining the position of the dome target plate, and the self-positioning function of the dome target plate can be realized during the installation stage of the dome target plate; the bottom of the cladding connection seat is directly fixed on the cladding, and the upper part is designed with a positioning surface that cooperates with the positioning inclined surface and the positioning boss at the bottom of the dome target plate. The present invention can realize the front remote operation function of the dome target plate and can improve the tritium breeding ratio of the fusion reactor.

Description

Technical Field

[0001] The present invention belongs to the field of magnetic confinement fusion, and particularly relates to a dome target plate device capable of realizing front-side remote operation and a remote operation method thereof. Background Art

[0002] The divertor is a key system in a magnetic confinement fusion device. The divertor generally includes an inner target plate, an outer target plate, and a dome target plate (DOME). The dome target plate is located between the inner target plate and the outer target plate. Its main functions are to protect other components below the DOME from being struck by high-energy particles, remove heat, and form two relatively deep "V"-shaped valleys, namely an inner and an outer one, together with the inner and outer target plates, so that neutral particles and impurities are isolated in this area. In a fusion reactor, due to neutron activation, the dome target plate has a certain radioactivity. Therefore, traditional manual operation methods cannot be used for operations such as installation, disassembly, and maintenance of the dome target plate (DOME), and a robotic arm must be used for remote operation. To prevent the dome target plate (DOME) from getting stuck during remote operation and reduce the difficulty of remote operation, the dome target plate (DOME) should have a self-positioning function during installation. In addition, tritium self-sufficiency is one of the necessary conditions for the commercial operation of a fusion reactor. Increasing the tritium breeding ratio in the dome target plate area is of great significance for realizing tritium self-sufficiency in a fusion reactor. Summary of the Invention

[0003] To solve the above technical problems, the present invention provides a dome target plate device capable of realizing front-side remote operation and a remote operation method thereof. The dome target plate of the present invention is directly connected to the breeding blanket at its bottom, and the neutron shielding layer is cancelled, so that the breeding blanket at its bottom can be fully utilized to increase the tritium breeding ratio.

[0004] To achieve the above object, the technical solution adopted by the present invention is as follows:

[0005] A dome target plate device capable of realizing front remote operation, comprising a target plate, a connection seat, a main support body, a connection water pipe, 2 main screws and their washers, a cladding connection water pipe and a cladding connection seat; wherein the target plate, the connection seat, the main support body and the connection water pipe together form a dome target plate; the cladding connection seat is directly fixed on the cladding; the target plate is successively composed of a first wall material and a heat sink from top to bottom; each dome target plate includes a number of conventional target plates and 2 special target plates, the 2 special target plates are located in the middle of all the target plates, and there is 1 main inlet and outlet water pipe remote operation channel and 2 main screw remote operation channels arranged thereon, which are respectively used for remotely operating the 2 main screws, the main inlet water pipe and the main outlet water pipe; the 2 main screw remote operation channels are located at both ends of the target plate, the main inlet and outlet water pipe remote operation channel is located near the middle position of the special target plate, and the 2 special target plates are provided with sunken surfaces at positions close to the symmetry plane in the width direction of the dome target plate, and the 3 remote operation channels are all located on the sunken surfaces to prevent the 3 remote operation channels from being directly struck by plasma; an inclined chamfer is arranged on the other side of the sunken surface, and the plasma strikes on the inclined chamfer to reduce the heat flux density striking on the chamfer; the lower part of the main support body is designed with 4 first positioning inclined surfaces and positioning bosses, and the cladding connection seat is provided with corresponding 4 second positioning inclined surfaces and positioning planes. The main support body determines its position on the cladding connection seat through the cooperation of the first positioning inclined surface and the second positioning inclined surface and the cooperation of the positioning boss and the positioning plane, and realizes the self-positioning function during the remote operation process.

[0006] Further, a layer of oxygen-free copper or graphite paper is arranged between the first wall material and the heat sink of the target plate as a stress buffer material or a transition layer for improving contact heat transfer; the first wall material is pure tungsten, tungsten alloy, beryllium, molybdenum, graphite or high thermal conductivity carbon fiber composite material; the heat sink is a copper-steel composite plate, wherein the copper layer of the copper-steel composite plate is located on the side close to the first wall material, and the first wall material, the transition layer and the heat sink are connected by screws or welding; a target plate cooling flow channel is arranged in the heat sink, and the top of the target plate cooling flow channel extends to the copper layer of the copper-steel composite plate of the heat sink.

[0007] Further, the connection seat is located in the middle of the target plate and the main support body, and is used for connecting the target plate and the main support body, transmitting the electromagnetic force received by the target plate to the main support body, and ensuring the installation accuracy of the target plate.

[0008] Further, a main water inlet pipe and a main water outlet pipe are provided at the bottom of the main support body; one ends of the main water inlet pipe and the main water outlet pipe are respectively connected to the water inlet cavity and the water outlet cavity inside the main support body, and the other ends of the main water inlet pipe and the main water outlet pipe are connected to the cladding connection water pipe for introducing cooling water into the main support body; corresponding front cooling channels and rear cooling channels are arranged inside the main support body, which are respectively connected to the water inlet cavity and the water outlet cavity for cooling the main support body and guiding the cooling water to the front water distribution cavity and the rear water distribution cavity, and the connection water pipe connects the front water distribution cavity and the rear water distribution cavity to the target plate cooling channel, thereby introducing the cooling water into the target plate.

[0009] Further, two main screw counterbores are provided at both ends of the main support body for accommodating two main screws.

[0010] Further, covers are provided at the upper ends of the water inlet cavity and the water outlet cavity for closing the water inlet cavity and the water outlet cavity. After removing the covers, remote operations such as cutting, welding, and flaw detection can be performed on the main water inlet and outlet pipes.

[0011] Further, one ends of two cladding connection water pipes are respectively connected to the main water inlet pipe and the main water outlet pipe, and the other ends are connected to the water supply pipes inside the breeding cladding for introducing cooling water into the dome target plate; the cladding connection water pipes are in an S shape along the length direction for accommodating the thermal deformation of the water pipes; chip collection grooves are arranged inside the cladding connection water pipes for collecting chips generated during the cutting process of the main water inlet pipe, the main water outlet pipe, and the covers; after the water pipe cutting is completed, the chips in the chip collection grooves are removed by the dust suction device on the remote operation robotic arm.

[0012] Further, the cladding connection seat is directly fixed on the breeding cladding.

[0013] Further, two main screw holes are also provided on the cladding connection seat for fastening two main screws.

[0014] Further, the number of the positioning bosses is greater than or equal to 3.

[0015] The present invention also provides a remote operation method for a dome target plate device capable of realizing front - side remote operation, including an installation process and a disassembly process. The installation process includes the following steps:

[0016] Step 1: Initial attitude adjustment: The remote operation manipulator holds the dome target plate and enters the vacuum chamber through the window of the vacuum chamber. The clamping position is set at the remote operation channels of the main water inlet pipe and the main water outlet pipe on the target plate or the two main screw remote operation channels, and then the initial attitude of the dome target plate is adjusted inside the vacuum chamber to ensure that the dome target plate does not interfere with other components inside the vacuum chamber during the installation process, and then the manipulator transports the dome target plate to the vicinity of the cladding connection seat;

[0017] Step 2: Positioning of the dome target plate: Under the clamping of the remote operation manipulator and guided by 4 first positioning inclined planes and 4 second positioning inclined planes, the dome target plate is installed at the correct position on the blanket connection seat;

[0018] Step 3: Pre-tightening and installation of the main screws: The remote operation manipulator moves 2 main screws and their washers into the counterbores of the main screws, pre-tightens the main screws, and completes the installation process of the dome target plate; The 2 main screws are pre-tightened step by step alternately or the 2 main screws are pre-tightened simultaneously;

[0019] Step 4: Welding of the main water pipes: The remote operation welding tool reaches the water pipe joints of the blanket connection water pipes through the main water inlet and outlet pipe remote operation channels on the target plate, welds and leaks the main water inlet pipe and the main water outlet pipe; After completing the welding of the main water inlet pipe and the main water outlet pipe, the welding and flaw detection tool is removed, the chips in the chip collection groove are removed, and the cover of the welding water cavity is welded to complete the welding operation of the main water inlet pipe and the main water outlet pipe.

[0020] Furthermore, the disassembly process includes the following steps:

[0021] Step 1: Disassemble the main screws and washers, disassemble the 2 main screws simultaneously or step by step alternately;

[0022] Step 2: Remove the cover, cut the main water inlet pipe and the main water outlet pipe, and remove the chips in the chip collection groove;

[0023] Step 3: Remove the dome target plate from the blanket connection seat and adjust the posture of the dome target plate;

[0024] Step 4: Remove the dome target plate from the vacuum chamber window for subsequent maintenance work.

[0025] Beneficial effects:

[0026] The present invention can realize the front remote operation of the dome target plate, reduce the difficulty of remote operation; The dome target plate should have a self-positioning function during the installation process to prevent the dome target plate from getting stuck during the remote operation; The dome target plate is directly connected to the blanket, increasing the tritium breeding ratio at the dome target plate part. Description of the drawings

[0027] Figure 1 It is an installation schematic diagram of a dome target plate device capable of realizing front remote operation according to the present invention;

[0028] Figure 2 It is a structural schematic diagram of a dome target plate device capable of realizing front remote operation according to the present invention;

[0029] Figure 3 It is a top view of a dome target plate device capable of realizing front remote operation according to the present invention;

[0030] Figure 4 A-A cross-sectional view of a dome target plate device capable of realizing front remote operation according to the present invention;

[0031] Figure 5 is Figure 4 partial enlarged view of B in

[0032] Figure 6 Bottom structure schematic diagram of a dome target plate device capable of realizing front remote operation according to the present invention;

[0033] Figure 7 Schematic diagram of the target plate contour and water pipe connection method according to the present invention;

[0034] Figure 8 Cross-sectional view of a conventional target plate (along the length direction of the conventional target plate);

[0035] Figure 9 C-C cross-sectional view of the target plate according to the present invention;

[0036] Figure 10 Schematic diagram of the flow channel in the main support body according to the present invention;

[0037] Figure 11 Schematic diagram of the cladding connection seat according to the present invention;

[0038] Figure 12 Schematic diagram of the connection of the main inlet and outlet water pipes according to the present invention.

[0039] Wherein, 0 - dome target plate; 1 - target plate; 1.1 - conventional target plate; 1.2 - special target plate; 1.2.1 - main screw remote operation channel; 1.2.2 - main inlet and outlet water pipe remote operation channel; 1.2.3 - chamfer; 1.2.4 - sunken surface; 2 - connection seat; 3 - main support body; 3.1 - positioning boss; 3.2 - first positioning inclined surface; 3.3 - water inlet cavity; 3.4 - water outlet cavity; 3.5 - cover; 3.6 - front cooling flow channel; 3.7 - front water distribution cavity; 3.8 - rear cooling flow channel; 3.9 - rear water distribution cavity; 3.10 - main screw counterbore; 4 - connecting water pipe; 5 - main screw; 6 - cladding connection seat; 6.1 - main screw hole; 6.2 - positioning plane; 6.3 - second positioning inclined surface; 7 - first wall material; 8 - heat sink; 9 - transition layer; 10 - target plate cooling flow channel; 11 - main inlet water pipe; 12 - main outlet water pipe; 13 - cladding connection water pipe; 13.1 - chip collection groove; 14 - washer. Specific implementation method

[0040] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0041] As Figure 1-11 shown, an embodiment of the present invention provides a dome target plate device with front remote operation, mainly including a target plate 1, a connection seat 2, a main support body 3, a connection water pipe 4, two main screws 5 and a cladding connection seat 6. The target plate 1, the connection seat 2, the main support body 3, and the connection water pipe 4 together form a dome target plate 0. As Figure 7 、 8 shown, the target plate 1 includes a first wall material 7 and a heat sink 8 from top to bottom. An oxygen-free copper layer is provided as a transition layer 9 between the first wall material 7 and the heat sink 8, which is used as a stress buffer material. The first wall material 7 can be a material with high temperature resistance, ablation resistance and low sputtering rate, such as pure tungsten, tungsten alloy, beryllium, molybdenum, graphite, high thermal conductivity carbon fiber composite material, etc. The heat sink 8 is a copper-steel composite plate, where the copper layer of the copper-steel composite plate is located on the side close to the first wall material 7. The first wall material 7 and the heat sink 8 are connected by screws or welding. A target plate cooling channel 10 is opened in the heat sink 8 to remove the heat load received by the target plate 1, and the top of the target plate cooling channel 10 extends to the copper layer of the heat sink 8.

[0042] As Figure 2 , Figure 7As shown, each dome target plate 0 includes two types of conventional target plates 1.1 and special target plates 1.2. All target plates 1 are strip-shaped and arranged side by side along the width direction of the dome target plate 0. There are a total of 2 special target plates 1.2, which are located in the middle position of the array of all target plates 1. Two conventional target plates 1.1 are evenly distributed on both sides of the special target plate 1.2. Among them, the special target plate 1.2 is designed with 2 main screw remote operation channels 1.2.1, a main inlet and outlet water pipe remote operation channel 1.2.2, a sinking surface 1.2.4, and an inclined chamfer 1.2.3, so it is called a special target plate. There is 1 main inlet and outlet water pipe remote operation channel 1.2.2 and 2 main screw remote operation channels 1.2.1 on the special target plate 1.2, which are respectively used for remotely operating 2 main screws 5, the main inlet water pipe 11, and the main outlet water pipe 12. The 2 main screw remote operation channels 1.2.1 are located at both ends of the special target plate 1.2, and the main inlet and outlet water pipe remote operation channel 1.2.2 is located near the middle position of the special target plate 1.2. The two special target plates 1.2 are provided with a sinking surface 1.2.4 at the position close to the symmetry plane in the width direction of the dome target plate 0. The main screw remote operation channel 1.2.1 and the main inlet and outlet water pipe remote operation channel 1.2.2 are both located on this sinking surface 1.2.4 to prevent the above 3 remote operation channels from being directly hit by the plasma. On the other side of the sinking surface 1.2.4, there is an inclined chamfer 1.2.3, and the plasma is designed to hit on this inclined chamfer 1.2.3 to reduce the heat flux density hitting on the chamfer 1.2.3.

[0043] As Figure 4 , Figure 10 shown, the coupling seat 2 is located in the middle of the target plate 1 and the main support 3, and is used to connect the target plate 1 and the main support 3, transfer the electromagnetic force received by the target plate 1 to the main support 3, and ensure the installation accuracy of the target plate 1. The upper part of the main support 3 is fixedly connected to the coupling seat 2. The lower part of the main support 3 is designed with 4 positioning bosses 3.1 and 4 first positioning inclined surfaces 3.2. The main inlet water pipe 11 and the main outlet water pipe 12 are welded to the water inlet cavity 3.3 and the water outlet cavity 3.4 at the bottom of the main support 3. The tops of the water inlet cavity 3.3 and the water outlet cavity 3.4 are designed with covers 3.5 to close the water outlet cavity 3.4 and the water inlet cavity 3.3. After removing the cover 3.5, remote operation can be performed on the main inlet water pipe 11 and the main outlet water pipe 12; the water inlet cavity 3.3 and the water outlet cavity 3.4 are located in the middle of the dome target plate 0 and are used to distribute the cooling water into 2 front cooling channels 3.6 and 2 rear cooling channels 3.8 respectively. One end of the front cooling channel 3.6 is connected to the water inlet cavity 3.3, and the other end is connected to the front water distribution cavity 3.7. One end of the rear cooling channel 3.8 is connected to the water outlet cavity 3.4, and the other end is connected to the rear water distribution cavity 3.9.

[0044] One end of the target plate cooling channel 10 is connected to the front water distribution cavity 3.6 through the connecting water pipe 4, and the other end is connected to the rear water distribution cavity 3.9 through the connecting water pipe 4, so as to form a complete cooling circuit within the target plate 1 and the main support body 3; two main screw counterbores 3.10 are designed on the main support body 3 for accommodating two main screws 5.

[0045] As Figure 4 , 12 shown, the cladding connecting water pipe 13 is connected to the water pipes inside the cladding. One ends of the two cladding connecting water pipes 13 are respectively connected to the main water inlet pipe 11 and the main water outlet pipe 12, and the other ends are connected to the water supply pipeline inside the breeding blanket, for introducing cooling water into the dome target plate 0. The cladding connecting water pipe 13 is in an S shape along the length direction, for accommodating the thermal deformation of the water pipes. A chip receiving groove 13.1 is designed inside the cladding connecting water pipe 13 for collecting chips generated during the cutting of the main water inlet pipe 11, the main water outlet pipe 12 and the cover 3.5. After cutting is completed, the chips in the chip receiving groove 13.1 are removed by the dust suction device on the remote operation manipulator, to prevent the chips from entering the cooling pipeline.

[0046] As Figure 11 shown, the cladding connecting seat 6 is provided with a main screw hole 6.1, a positioning plane 6.2 and a second positioning inclined plane 6.3, which are respectively matched with the positioning boss 3.1 and the first positioning inclined plane 3.2, so as to determine the position of the main support body 3. The cladding connecting seat 6 is directly fixed on the breeding blanket, and is provided with four second positioning inclined planes 6.3 and a positioning plane 6.2 that are matched with the first positioning inclined plane 3.2 and the positioning boss 3.1 on the main support body 3, for determining the precise positions of the main support body 3 and the dome target plate 0. The second positioning inclined plane 6.3 on the cladding connecting seat 6 and the first positioning inclined plane 3.2 on the main support body 3 play a guiding role during the installation process of the dome target plate 0, so as to realize the self-positioning function of the dome target plate 0 during the installation process. The two main screw holes 6.1 on the cladding connecting seat 6 are used for fastening two main screws 5.

[0047] The remote operation method of a dome target plate device with front remote operation according to the present invention includes the installation and disassembly processes of the dome target plate. The installation process is divided into 4 steps, and the specific process is as follows:

[0048] Step 1: Initial attitude adjustment. The remote operation manipulator clamps the dome target plate 0 and enters the vacuum chamber through the window. The clamping position is set at the main water inlet and outlet pipe remote operation channels 1.2.2 on the target plate 1 or the two main screw remote operation channels 1.2.1, and then the initial attitude of the dome target plate 0 is adjusted in the vacuum chamber to ensure that the dome target plate 0 will not interfere with the cladding or other components during the installation process, and then the manipulator transports the dome target plate 0 to near the cladding connecting seat 6.

[0049] Step 2: Positioning of the dome target plate 0. Under the clamping of the remote operation manipulator and guided by 4 first positioning inclined surfaces 3.2 and 4 second positioning inclined surfaces 6.3, the dome target plate 0 is installed at the correct position on the blanket connection seat 6. When the positioning boss 3.1 contacts the positioning plane 6.2, the dome target plate 0 is installed in place.

[0050] Step 3: Pre-tightening and installation of the main screws 5. The remote operation tool moves 2 main screws 5 and washers 14 into the main screw counterbores 3.10 and pre-tightens the main screws 5 to complete the installation process of the dome plate 0; since the 2 main screws 5 are far apart, when pre-tightening the main screws 5, in order to prevent the unilateral positioning boss 3.1 from being overloaded or jammed, it is necessary to pre-tighten the 2 main screws 5 step by step alternately; or adopt the scheme of pre-tightening the 2 main screws 5 simultaneously.

[0051] Step 4: Welding of the main inlet and outlet water pipes. The remote operation welding tool reaches the water pipe joints of the main inlet pipe 11, the main outlet pipe 12 and the blanket connection water pipe 13 through the main inlet and outlet water pipe remote operation channels 1.2.2 on the target plate 1, welds and leaks the water pipes; after welding, the welding and flaw detection tool is removed, and foreign matters that may exist at the chip collection groove 13.1 are removed, and the welding cover 3.5 is installed to complete the water pipe welding operation.

[0052] The remote operation disassembly scheme of the dome target plate 0 of the present invention is basically the same as the installation scheme, but the order is reversed. The specific process is as follows:

[0053] Step 1: Remove the main screws 5 and washers 14, and adopt the scheme of removing the 2 main screws 5 simultaneously or step by step alternately.

[0054] Step 2: Remove the cover 5, cut off the main inlet pipe 11 and the main outlet pipe 12 from the blanket connection water pipe 13, and remove the chips in the chip collection groove 13.1.

[0055] Step 3: Remove the dome target plate 0 from the blanket connection seat 6 and adjust the attitude of the dome target plate 0.

[0056] Step 4: Remove the dome target plate 0 from the vacuum chamber window for subsequent maintenance work.

[0057] Those skilled in the art can easily understand that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A dome target plate device capable of realizing front-side remote operation, characterized in that: It includes a target plate, a connection seat, a main support body, a connection water pipe, 2 main screws and their washers, a cladding connection water pipe, and a cladding connection seat; wherein the target plate, the connection seat, the main support body, and the connection water pipe together form a dome target plate; the cladding connection seat is directly fixed on the cladding; the target plate is composed of a first wall material and a heat sink from top to bottom; each dome target plate includes several conventional target plates and 2 special target plates, and the 2 special target plates are located in the middle of all target plates, on which there is 1 main inlet and outlet water pipe remote operation channel and 2 main screw remote operation channels, which are respectively used for remotely operating the 2 main screws, the main inlet water pipe, and the main outlet water pipe; the 2 main screw remote operation channels are located at both ends of the target plate, and the main inlet and outlet water pipe remote operation channels are located near the middle position of the special target plate. The 2 special target plates are provided with a sinking surface at a position close to the symmetry plane in the width direction of the dome target plate, and the 3 remote operation channels are all located on this sinking surface to prevent the 3 remote operation channels from being directly hit by plasma; on the other side of the sinking surface, there is an inclined chamfer, and the plasma hits on the inclined chamfer to reduce the heat flux density hitting on the chamfer; the lower part of the main support body is designed with 4 first positioning inclined surfaces and positioning bosses, and the cladding connection seat is provided with corresponding 4 second positioning inclined surfaces and positioning planes. The main support body determines its position on the cladding connection seat through the cooperation of the first positioning inclined surface and the second positioning inclined surface, and the cooperation of the positioning boss and the positioning plane, so as to realize the self-positioning function during the remote operation process.

2. The dome target plate device capable of realizing front-side remote operation according to claim 1, characterized in that, A layer of oxygen-free copper or graphite paper is provided between the first wall material and the heat sink of the target plate as a stress buffer material or a transition layer for improving contact heat transfer; the first wall material is pure tungsten, tungsten alloy, beryllium, molybdenum, graphite or high thermal conductivity carbon fiber composite material; the heat sink is a copper-steel composite plate, and the copper layer of the copper-steel composite plate is located on the side close to the first wall material. The first wall material, the transition layer and the heat sink are connected by screws or welding; a target plate cooling flow channel is opened in the heat sink, and the top of the target plate cooling flow channel extends to the copper layer of the copper-steel composite plate of the heat sink.

3. The dome target plate device capable of realizing front-side remote operation according to claim 1, characterized in that, The connection seat is located in the middle of the target plate and the main support body, and is used to connect the target plate and the main support body, transfer the electromagnetic force received by the target plate to the main support body, and ensure the installation accuracy of the target plate.

4. The dome target plate device capable of realizing front-side remote operation according to claim 1, characterized in that, The bottom of the main support body is provided with a main water inlet pipe and a main water outlet pipe; one ends of the main water inlet pipe and the main water outlet pipe are respectively connected to the water inlet cavity and the water outlet cavity inside the main support body, and the other ends of the main water inlet pipe and the main water outlet pipe are connected to the cladding connection water pipe for introducing cooling water into the main support body; corresponding front cooling channels and rear cooling channels are arranged inside the main support body, which are respectively connected to the water inlet cavity and the water outlet cavity for cooling the main support body and guiding the cooling water to the front water distribution cavity and the rear water distribution cavity, and the connection water pipe connects the front water distribution cavity and the rear water distribution cavity to the target plate cooling channel, thereby introducing the cooling water into the target plate.

5. The domed target plate device capable of realizing front remote operation according to claim 1, characterized in that, Two main screw counterbores are arranged at both ends of the main support body for accommodating two main screws.

6. The domed target plate device capable of realizing front remote operation according to claim 4, characterized in that, Lids are arranged at the upper ends of the water inlet cavity and the water outlet cavity for closing the water inlet cavity and the water outlet cavity. After removing the lids, cutting, welding and flaw detection remote operations are carried out on the main water inlet and outlet pipes.

7. The domed target plate device capable of realizing front remote operation according to claim 1, characterized in that, One ends of two cladding connection water pipes are respectively connected to the main water inlet pipe and the main water outlet pipe, and the other ends are connected to the water supply pipes inside the breeding cladding for introducing cooling water into the domed target plate; the cladding connection water pipes are S-shaped along the length direction for accommodating the thermal deformation of the water pipes; chip receiving grooves are arranged inside the cladding connection water pipes for collecting chips generated during the cutting process of the main water inlet pipe, the main water outlet pipe and the lids; after the water pipe cutting is completed, the chips in the chip receiving grooves are removed by the dust suction equipment on the remote operation robotic arm.

8. The domed target plate device capable of realizing front remote operation according to claim 1, characterized in that, The cladding connection seat is directly fixed on the breeding cladding.

9. The domed target plate device capable of realizing front remote operation according to claim 1, characterized in that, Two main screw holes are also arranged on the cladding connection seat for fastening two main screws.

10. The domed target plate device capable of realizing front remote operation according to claim 1, characterized in that, The number of the positioning bosses is greater than or equal to 3.

11. The remote operation method of the domed target plate device capable of realizing front remote operation according to any one of claims 1-10, including the installation process and the disassembly process, characterized in that, The installation process includes the following steps: Step 1: Initial attitude adjustment: The remote operation manipulator clamps the domed target plate and enters the vacuum chamber through the window of the vacuum chamber. The clamping position is set at the remote operation channels of the main water inlet pipe and the main water outlet pipe on the target plate or the two main screw remote operation channels, and then the initial attitude of the domed target plate is adjusted in the vacuum chamber to ensure that the domed target plate does not interfere with other components in the vacuum chamber during the installation process, and then the manipulator transports the domed target plate to near the cladding connection seat; Step 2: Dome target plate positioning: Under the clamping of the remote operation manipulator and guided by 4 first positioning inclined planes and 4 second positioning inclined planes, the dome target plate is installed at the correct position on the blanket connection seat; Step 3: Pre-tightening and installation of main screws: The remote operation manipulator moves 2 main screws and their washers into the counterbores of the main screws, pre-tightens the main screws, and completes the installation process of the dome target plate; The 2 main screws are pre-tightened step by step alternately or the 2 main screws are pre-tightened simultaneously; Step 4: Welding of main water pipes: The remote operation welding tool reaches the water pipe joints of the blanket connection water pipes through the main inlet and outlet water pipe remote operation channels on the target plate, welds and leaks the main inlet water pipe and the main outlet water pipe; After the welding of the main inlet water pipe and the main outlet water pipe is completed, the welding and flaw detection tool is removed, the chips in the chip collection groove are removed, and the cover of the welding water cavity is welded to complete the welding operation of the main inlet water pipe and the main outlet water pipe.

12. The remote operation method according to claim 11, characterized in that the disassembly process includes the following steps: Step 1: Remove the main screws and washers, remove the 2 main screws simultaneously or step by step alternately; Step 2: Remove the cover, cut the main inlet water pipe and the main outlet water pipe, and remove the chips in the chip collection groove; Step 3: Remove the dome target plate from the blanket connection seat and adjust the attitude of the dome target plate; Step 4: Remove the dome target plate from the vacuum chamber window for subsequent maintenance work.

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