High-temperature gas cooled reactor main equipment replacement device

Abstract

The utility model provides a high-temperature gas cooled reactor main equipment replacement device, which is characterized in that the bottom of a barrel assembly is fixedly connected with high-temperature gas cooled reactor main equipment so as to separate the inside of the barrel assembly from the external environment; the hoisting assembly is arranged at the top of the cylinder assembly and is used for hoisting out the main equipment of the high-temperature gas cooled reactor; the isolating valve assembly is arranged in the middle of the barrel assembly to divide the interior of the barrel assembly into a first cabin and a second cabin, and is used for controlling atmosphere isolation and communication of the first cabin and the second cabin in the replacement process of the main equipment of the high-temperature gas cooled reactor; the first atmosphere switching assembly is communicated with the first cabin and used for controlling the atmosphere type of the first cabin, and the second atmosphere switching assembly is communicated with the second cabin and used for controlling the atmosphere type of the second cabin; therefore, under the condition that the high-temperature gas cooled reactor is not stopped, the problem that the main equipment cannot be isolated from the radioactive helium atmosphere and dismounted for offline maintenance is solved, and meanwhile, the maintenance efficiency of the main equipment is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to high temperature gas cooled reactor equipment overhauling technical field especially relates to a high temperature gas cooled reactor main equipment replacement device. BACKGROUND

[0002] High temperature gas cooled reactor (High-Temperature Gas-cooled Reactor, HTGR) adopts gas (usually helium) as coolant, has the characteristics of high temperature, low pressure and high thermal efficiency, is widely used in power generation, cogeneration, industrial heat supply and hydrogen production and other fields. However, the non-stop reactor refueling characteristics of high temperature gas cooled reactor bring economy at the same time, also put forward severe challenge to the replacement of main equipment. In the replacement of main equipment, especially the main helium fan, it must be ensured that the core fuel element does not contact with air, so as to prevent the oxidation of fuel element, reduce performance, and prevent the generation of harmful gas, affect the health of personnel and environmental safety.

[0003] The prior art mainly has two solutions: one is to improve the continuous operation life of the main helium fan to avoid replacing the equipment within the design life; the other is to increase the shutdown and discharge system when the equipment must be replaced, and the fuel elements in the core are discharged at one time. However, the former has very high requirements for the structural design and material performance of the main helium fan, and it is difficult to achieve the set life target in actual operation; the latter requires that the fuel loading and unloading system has high frequency and large capacity of unloading, and the long waiting period of shutdown and restart of the reactor has a serious impact on the economy of the nuclear power plant. SUMMARY

[0004] The utility model embodiment provides a kind of high temperature gas cooled reactor main equipment replacement device, to solve the problem that high temperature gas cooled reactor main equipment cannot be isolated from radioactive helium atmosphere and removed offline maintenance in prior art.

[0005] In order to achieve the above purpose, the utility model provides a kind of high temperature gas cooled reactor main equipment replacement device, comprising: barrel assembly, isolation valve assembly, first atmosphere switching assembly, second atmosphere switching assembly and hoisting assembly;The bottom of the barrel assembly is fixedly connected with the high temperature gas cooled reactor main equipment;The isolation valve assembly is fixedly arranged in the middle part of the barrel assembly, to divide the inside of the barrel assembly into first cabin and second cabin, and the isolation valve assembly is used to control the atmosphere isolation and through of the first cabin and the second cabin during the replacement of high temperature gas cooled reactor main equipment;The first atmosphere switching assembly is communicated with the first cabin, and the second atmosphere switching assembly is communicated with the second cabin;The hoisting assembly is arranged at the top of the barrel assembly, to be used for hoisting high temperature gas cooled reactor main equipment.

[0006] Further, the barrel assembly comprises a barrel body and a barrel cover, the barrel cover is arranged on the top of the barrel body, and the barrel body and the barrel cover are fixedly connected; a barrel flange is arranged on the bottom of the barrel body, and the barrel flange is fixedly connected with a main helium fan flange on the high-temperature gas cooled reactor main equipment.

[0007] Further, the isolation valve assembly comprises a fixed frame, a plurality of valve petals and a driving mechanism, the fixed frame is fixedly arranged in the middle of the barrel body, the plurality of valve petals and the driving mechanism are arranged on the fixed frame, and the root of each valve petal in the plurality of valve petals is connected with the driving mechanism.

[0008] Further, the driving mechanism comprises a plurality of transmission torsion rods and a driving motor, and the plurality of transmission torsion rods are connected with the driving motor.

[0009] Further, the barrel assembly further comprises a first reinforcing rib, a second reinforcing rib, a third reinforcing rib and a fourth reinforcing rib, the first reinforcing rib, the second reinforcing rib, the third reinforcing rib and the fourth reinforcing rib are uniformly distributed around the barrel body, and the bottom of the first reinforcing rib, the bottom of the second reinforcing rib, the bottom of the third reinforcing rib and the bottom of the fourth reinforcing rib are fixed on the barrel flange.

[0010] Further, the hoisting assembly comprises a bridge mechanism, the bridge mechanism comprises a first support beam, a second support beam and a third support beam, one end of the first support beam passes through the barrel body and is connected with the top end of the first reinforcing rib, the other end of the first support beam passes through the barrel body and is connected with the top end of the second reinforcing rib; one end of the second support beam passes through the barrel body and is connected with the top end of the third reinforcing rib, the other end of the second support beam passes through the barrel body and is connected with the top end of the fourth reinforcing rib; one end of the third support beam is movably connected with the first support beam, and the other end of the third support beam is movably connected with the second support beam.

[0011] Further, it further comprises a first air inlet pipe and a first air outlet pipe, one end of the first air inlet pipe is communicated with the first cabin, and the other end of the first air inlet pipe is communicated with the first atmosphere switching assembly; one end of the first air outlet pipe is communicated with the first cabin, and the other end of the first air outlet pipe is communicated with the first atmosphere switching assembly.

[0012] Further, the first atmosphere switching assembly is provided with a first compressor and a first helium storage device, and the first compressor is connected with the first helium storage device.

[0013] Further, a driving motor through hole is arranged on the barrel body, and the driving motor through hole is used to adapt the driving motor.

[0014] Further, the cylinder cover is further provided with an inlet and outlet cover, and the inlet and outlet cover is used for adapting the inlet and outlet on the cylinder cover.

[0015] The utility model provides a kind of high temperature gas cooled reactor main equipment replacement device, comprising: the bottom of cylinder component is fixedly connected with high temperature gas cooled reactor main equipment, to separate cylinder component inside with external environment;Hoisting subassembly is set to the top of cylinder component, to be used to hoist high temperature gas cooled reactor main equipment out;Isolation valve component is set to the middle part of cylinder component, to divide the first cabin and second cabin in cylinder component inside, and be used to control the atmosphere isolation and through in the first cabin and the second cabin in high temperature gas cooled reactor main equipment replacement process;First atmosphere switching component is communicated with the first cabin, to be used to control the atmosphere type of first cabin, second atmosphere switching component is communicated with the second cabin, to be used to control the atmosphere type of second cabin;So under high temperature gas cooled reactor does not stop stack condition, the problem that main equipment cannot be isolated from radioactive helium atmosphere and removed offline maintenance is solved, and the efficiency of main equipment maintenance is improved simultaneously. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical scheme of the utility model embodiment, the following will be briefly introduced to the drawings needed to be used in embodiment description, obviously, the drawings in the following description are some embodiments of the utility model, for those skilled in the art, without creative labor, other drawings can also be obtained according to these drawings.

[0017] Figure 1 The first structure diagram of the high temperature gas cooled reactor main equipment replacement device provided by the utility model embodiment and the high temperature gas cooled reactor main equipment connection is shown in the figure.

[0018] Figure 2 The second structure diagram of the high temperature gas cooled reactor main equipment replacement device provided by the utility model embodiment and the high temperature gas cooled reactor main equipment connection is shown in the figure.

[0019] Figure 3 The explosion diagram of the high temperature gas cooled reactor main equipment replacement device provided by the utility model embodiment and the high temperature gas cooled reactor main equipment connection is shown in the figure.

[0020] Figure 4 The structure diagram of the isolation valve component in the high temperature gas cooled reactor main equipment replacement device provided by the utility model embodiment is shown in the figure.

[0021] Among them, the various reference signs in the figure are as follows:

[0022] 100, High temperature gas cooled reactor main equipment replacement device; 110, Cylinder assembly; 111, Cylinder body; 1111, Cylinder flange; 112, Cylinder cover; 113, First reinforcing rib; 114, Second reinforcing rib; 115, Third reinforcing rib; 116, Fourth reinforcing rib; 117, Inlet and outlet cover; 120, Isolation valve assembly; 121, Fixed frame; 122, Valve clack; 123, Driving mechanism; 1231, Driving motor; 1232, Transmission torsion bar; 130, Bridge mechanism; 131, First support beam; 132, Second support beam; 133, Third support beam; 140, First atmosphere switching assembly; 150, Second atmosphere switching assembly; 160, First air inlet pipe; 170, First air outlet pipe; 180, Second air inlet pipe; 190, Second air outlet pipe; 200, High temperature gas cooled reactor main equipment. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0024] It should be understood that, when used in the specification and the appended claims, the terms "comprise" and "include" indicate the presence of described features, integers, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or groups thereof.

[0025] It should also be understood that the terms used in the present application specification are only for the purpose of describing specific embodiments and are not intended to limit the present application. As used in the present application specification and the appended claims, unless otherwise clearly indicated by the context, the singular form "a", "an" and "the" is intended to include the plural form.

[0026] In the present application specification, the terms "center", "upper", "left", "right", "straight", "horizontal", "inner", "outer", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship commonly placed when the product of the present application is used, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", "third", and the like are only used for differentiation in description and cannot be understood as indicating or implying relative importance.

[0027] It should be further understood that the term "and / or" as used in the specification and in the claims, if any, is used to mean one or the other of the items in the list it connects, as well as any combination of the items in the list.

[0028] Please refer to Figures 1 to 3 The utility model provides a kind of high temperature gas cooled reactor main equipment replacement device 100, which comprises: barrel assembly 110, isolation valve assembly 120, first atmosphere switching assembly 140, second atmosphere switching assembly 150 and hoisting assembly (not shown);The bottom of the barrel assembly 110 is fixedly connected with the high temperature gas cooled reactor main equipment;The isolation valve assembly 120 is fixedly arranged in the middle of the barrel assembly 110, to divide the inside of the barrel assembly 110 into first cabin (not shown) and second cabin (not shown), and the isolation valve assembly 120 is used to control the atmosphere isolation and through of the first cabin and the second cabin during the replacement process of the high temperature gas cooled reactor main equipment 200;The first atmosphere switching assembly 140 is communicated with the first cabin, and the second atmosphere switching assembly 150 is communicated with the second cabin;The hoisting assembly is arranged at the top of the barrel assembly 110, to be used for hoisting the high temperature gas cooled reactor main equipment 200.

[0029] In the embodiment, the high-temperature gas cooled reactor main equipment replacement device 100 mainly comprises a barrel assembly 110, a hoisting assembly, an isolation valve assembly 120, a first atmosphere switching assembly 140 and a second atmosphere switching assembly 150; wherein, since the high-temperature gas cooled reactor main equipment 200 is located in a special plant, in order to avoid the influence of the high-temperature gas cooled reactor main equipment 200 on the external plant environment, the high-temperature gas cooled reactor main equipment replacement device 100 is sleeved above the shell of the high-temperature gas cooled reactor main equipment 200, so that the barrel assembly 110 in the high-temperature gas cooled reactor main equipment replacement device 100 and the high-temperature gas cooled reactor main equipment 200 form a sealed space, thereby preventing radioactive helium gas leakage; wherein, the high-temperature gas cooled reactor main equipment 200 in the embodiment is a main helium fan. The isolation valve assembly 120 is located in the middle part of the barrel assembly 110, which can be opened and closed or closed during the replacement process of the high-temperature gas cooled reactor main equipment 200; when the isolation valve assembly 120 is in the closed state, the inside of the barrel assembly 110 is divided into two independent cabins, i.e. a first cabin and a second cabin, at this time, the first atmosphere switching assembly 140 and the second atmosphere switching assembly 150 can be controlled to adjust the atmosphere (including radioactivity and gas type) of the first cabin and the second cabin respectively according to actual needs; when the isolation valve assembly 120 is in the open state, the inside of the barrel assembly 110 is penetrated, at this time, the main helium fan rotor removed from the main equipment can be transported to the outside for maintenance through the hoisting assembly in turn from the first cabin, the isolation valve assembly 120 and the second cabin. In addition, the first atmosphere switching assembly 140 is connected with the first cabin to switch the helium / air atmosphere in the first cabin; the second atmosphere switching assembly 150 is connected with the second cabin to switch the helium / air atmosphere in the second cabin.

[0030] In implementation, during the replacement of the high-temperature gas cooled reactor main device 200, first, the isolation valve assembly 120 is closed to form a first cabin and a second cabin inside the barrel assembly 110; at this time, the air in the first cabin is extracted by the first atmosphere switching assembly 140 and helium is filled in to avoid excessive pressure difference on both sides of the isolation valve assembly 120; and the air atmosphere in the second cabin is retained; after the relevant operating personnel are well protected, they enter the second cabin, at which time the air in the second cabin is extracted by the second atmosphere switching assembly 150 and helium is filled in; in this case, the first cabin and the second cabin are filled with helium. Then, the isolation valve assembly 120 is opened, so that the operating personnel can continue to descend above the high-temperature gas cooled reactor main device 200, thereby the main helium blower top cover bolts on the main device are removed and the main helium blower top cover is connected to the hoisting assembly by a lifting tool; subsequently, the operating personnel retreat to the second cabin and the isolation valve assembly 120 is closed; wherein, when the main helium blower top cover bolts are removed, the radioactive helium gas from the core of the high-temperature gas cooled reactor main device 200 has filled the first cabin and the second cabin; at this time, the second atmosphere switching assembly 150 is started to extract the radioactive helium gas in the second cabin, filter it and switch to an air atmosphere; when the environment gas in the second cabin is consistent with the external environment gas, the personnel retreat. Subsequently, the isolation valve assembly 120 is opened again, the first cabin is connected with the second cabin; at the same time, the hoisting assembly is started to lift the main helium blower top cover, to complete the opening of the cover, the main helium blower rotor is exposed, and the radioactive helium gas surrounds the first cabin and the second cabin; when the main helium blower top cover is located in the second cabin, the isolation valve assembly 120 is closed, and the second atmosphere switching assembly 150 is started to extract the radioactive helium gas in the second cabin, filter it and switch to an air atmosphere. Finally, the barrel cover 112 on the barrel assembly 110 is opened to lift out the main helium blower top cover. In addition, after the main helium blower top cover is lifted out, the barrel cover 112 on the barrel assembly 110 is closed, and the barrel assembly 110 returns to a sealed state; at this time, the isolation valve assembly 120 is opened, the hoisting assembly is connected to the main helium blower rotor of the main helium blower, and the main helium blower rotor is lifted out according to the operation steps of lifting the main helium blower top cover, thereby realizing the offline maintenance of the main helium blower rotor. After the maintenance is completed, the main helium blower rotor and the top cover are sequentially lifted and installed on the main helium blower according to the reverse operation of the above steps, and finally the high-temperature gas cooled reactor main device replacement device 100 and the high-temperature gas cooled reactor main device 200 are separated, so as to remove the high-temperature gas cooled reactor main device replacement device 100.

[0031] Therefore, by means of the high-temperature gas cooled reactor main device replacement device 100 in the above embodiment, the problem that the main device cannot be isolated from the radioactive helium atmosphere and removed for offline maintenance is solved without stopping the high-temperature gas cooled reactor, and the efficiency of the main device maintenance is improved.

[0032] In an embodiment, asFigures 1-3 As shown, the cylindrical assembly 110 includes a cylindrical body 111 and a cylindrical cover 112. The cylindrical cover 112 is disposed on the top of the cylindrical body 111, and the cylindrical body 111 is fixedly connected to the cylindrical cover 112. A cylindrical flange 1111 is disposed on the bottom of the cylindrical body 111, and the cylindrical flange 1111 is fixedly connected to the main helium blower flange on the main equipment 200 of the high-temperature gas-cooled reactor.

[0033] In this embodiment, to prevent the leakage of radioactive helium from the cylinder assembly 110 and the main equipment, a cylinder cover 112 is provided on the top of the cylinder body 111 of the cylinder assembly 110, allowing the cylinder body 111 and the cylinder cover 112 to be fixedly connected by bolts or other means; wherein, the cylinder body 111 is a hollow circular structure. In addition, a cylinder flange 1111 is provided on the bottom of the cylinder body 111, wherein the cylinder flange 1111 is provided with multiple flange through holes evenly distributed, allowing the cylinder flange 1111 to be fixed to the main helium blower flange of the high-temperature gas-cooled reactor main equipment 200 by bolts or other means, thereby making the space formed between the cylinder cover 112, the cylinder body 111 and the high-temperature gas-cooled reactor main equipment 200 a sealed space.

[0034] In one embodiment, such as Figures 1-4 As shown, the isolation valve assembly 120 includes a fixed frame 121, a plurality of valve discs 122 and a drive mechanism 123. The fixed frame 121 is fixedly disposed in the middle of the cylinder body 111. The plurality of valve discs 122 and the drive mechanism 123 are all disposed on the fixed frame 121. The root of each valve disc 122 is connected to the drive mechanism 123.

[0035] In this embodiment, to enable the isolation valve assembly 120 to open or close during the replacement of the main equipment 200 of the high-temperature gas-cooled reactor, the isolation valve assembly 120 is composed of a fixed frame 121, multiple valve discs 122, and multiple drive mechanisms 123. The fixed frame 121 is fixedly installed in the middle of the cylinder 111 by welding or other methods. The multiple valve discs 122 and the drive mechanisms 123 are all mounted on the fixed frame 121. Specifically, each valve disc 122 is a fan-shaped structure, and the side edges of the multiple valve discs 122 can overlap to form an isolation plane, thereby dividing the interior of the cylinder into a first compartment and a second compartment. Furthermore, the root of each valve disc 122 is connected to the drive mechanism 123, so that under the drive of the drive mechanism 123, each valve disc 122 opens or closes, thereby controlling the opening or closing of the isolation valve assembly 120.

[0036] In one embodiment, such as Figures 1-4As shown, the driving mechanism 123 includes a plurality of transmission torsion rods 1232 and a driving motor 1231, each of the plurality of transmission torsion rods 1232 is connected with an adjacent transmission torsion rod 1232, and each of the plurality of transmission torsion rods 1232 is connected with a corresponding valve disc 122 of the plurality of valve discs 122; one of the plurality of valve discs 122 is connected with the driving motor 1231 through a corresponding transmission torsion rod 1232.

[0037] In the embodiment, the driving mechanism 123 specifically includes a plurality of transmission torsion rods 1232 and a driving motor 1231, the number of the plurality of transmission torsion rods 1232 is the same as the number of the plurality of valve discs 122, and the plurality of transmission torsion rods 1232 correspond to the plurality of valve discs 122 one by one; and each of the plurality of transmission torsion rods 1232 is connected with an adjacent transmission torsion rod 1232; wherein each of the plurality of transmission torsion rods 1232 includes a connecting rod and a transmission part, the transmission part in each of the plurality of transmission torsion rods 1232 is connected with a corresponding valve disc 122 of the plurality of valve discs 122; one end of the connecting rod in each of the plurality of transmission torsion rods 1232 is connected with the transmission part, and the other end is connected with the transmission part on the adjacent transmission torsion rod 1232; in addition, one of the plurality of valve discs 122 is connected with the driving motor 1231 through a corresponding transmission part, so that under the driving of the driving motor 1231, the corresponding transmission torsion rod 1232 of the remaining valve disc 122 of the plurality of valve discs 122 is driven to move, and then the plurality of valve discs 122 are opened or closed to realize the opening or closing of the isolation valve assembly 120.

[0038] In an embodiment, as shown in the drawings, Figures 1-3 As shown, the cylinder assembly 110 further includes a first reinforcing rib 113, a second reinforcing rib 114, a third reinforcing rib 115, and a fourth reinforcing rib 116, the first reinforcing rib 113, the second reinforcing rib 114, the third reinforcing rib 115, and the fourth reinforcing rib 116 are uniformly distributed around the barrel body 111, and the bottom of the first reinforcing rib 113, the bottom of the second reinforcing rib 114, the bottom of the third reinforcing rib 115, and the bottom of the fourth reinforcing rib 116 are fixed on the cylinder flange 1111.

[0039] In the embodiment, in order to improve the structural strength and stability of the barrel assembly 110, the barrel assembly 110 further comprises a first reinforcing rib 113, a second reinforcing rib 114, a third reinforcing rib 115 and a fourth reinforcing rib 116, wherein the first reinforcing rib 113, the second reinforcing rib 114, the third reinforcing rib 115 and the fourth reinforcing rib 116 are uniformly distributed around the barrel body 111, and the bottom of the first reinforcing rib 113, the bottom of the second reinforcing rib 114, the bottom of the third reinforcing rib 115 and the bottom of the fourth reinforcing rib 116 are fixed on the barrel flange 1111 to form a stable support frame, so as to support the hoisting assembly through the first reinforcing rib 113, the second reinforcing rib 114, the third reinforcing rib 115 and the fourth reinforcing rib 116.

[0040] In an embodiment, as shown in Figures 1-3 The hoisting assembly comprises a bridge mechanism 130, which comprises a first support beam 131, a second support beam 132 and a third support beam 133. One end of the first support beam 131 is connected to the top end of the first reinforcing rib 113 through the barrel body 111, and the other end of the first support beam 131 is connected to the top end of the second reinforcing rib 114 through the barrel body 111. One end of the second support beam 132 is connected to the top end of the third reinforcing rib 115 through the barrel body 111, and the other end of the second support beam 132 is connected to the top end of the fourth reinforcing rib 116 through the barrel body 111. One end of the third support beam 133 is movably connected to the first support beam 131, and the other end of the third support beam 133 is movably connected to the second support beam 132.

[0041] In this embodiment, the bridge structure 130 on the hoisting assembly specifically includes a first support beam 131, a second support beam 132, and a third support beam 133. One end of the first support beam 131 passes through the cylinder 111 and connects to the top of the first reinforcing rib 113, while the other end passes through the cylinder 111 and connects to the top of the second reinforcing rib 114, thus forming a stable support structure through the first reinforcing rib 113, the first support beam 131, and the second reinforcing rib 114. One end of the second support beam 132 passes through the cylinder 111 and connects to the top of the third reinforcing rib 115, while the other end passes through the cylinder 111 and connects to the top of the fourth reinforcing rib 116, thus forming a stable support structure through the third reinforcing rib 115, the second support beam 132, and the fourth reinforcing rib 116. Furthermore, one end of the third support beam 133 is movably connected to the first support beam 131, and the other end of the third support beam 133 is movably connected to the second support beam 132, allowing the third support beam 133 to move in the lateral direction. Simultaneously, the third support beam 133 serves to support the lifting mechanism and the running mechanism. The lifting mechanism is used for lifting and transporting heavy objects and may consist of hooks and slings, etc., without specific limitations. The running mechanism is used to control the movement of the lifting components and may consist of components such as electric motors, reducers, axles, and gear tracks, also without specific limitations.

[0042] In one embodiment, such as Figures 1-3 As shown, it also includes a first air inlet pipe 160 and a first air outlet pipe 170. One end of the first air inlet pipe 160 is connected to the first compartment, and the other end of the first air inlet pipe 160 is connected to the first atmosphere switching component 140. One end of the first air outlet pipe 170 is connected to the first compartment, and the other end of the first air outlet pipe 170 is connected to the first atmosphere switching component 140.

[0043] In the embodiment, the high temperature gas cooled reactor main equipment replacement device 100 further comprises a first air inlet pipe 160 and a first air outlet pipe 170, wherein one end of the first air inlet pipe 160 is in communication with the first cabin, and the other end of the first air inlet pipe 160 is in communication with the first atmosphere switching assembly 140, so that external gas enters the first cabin through the first air inlet pipe 160 via the first atmosphere switching assembly 140 to meet the atmosphere demand in the first cabin; and one end of the first air outlet pipe 170 is in communication with the first cabin, and the other end of the first air outlet pipe 170 is in communication with the first atmosphere switching assembly 140, so that the gas in the first cabin is discharged through the first air outlet pipe 170 via the second atmosphere switching assembly 150 to meet the renewal or adjustment of the atmosphere in the first cabin. In addition, the high temperature gas cooled reactor main equipment replacement device 100 further comprises a second air inlet pipe 180 and a second air outlet pipe 190, wherein one end of the second air inlet pipe 180 is in communication with the second cabin, and the other end of the second air inlet pipe 180 is in communication with the first atmosphere switching assembly 140; one end of the second air outlet pipe 190 is in communication with the first cabin, and the other end of the second air outlet pipe 190 is in communication with the second atmosphere switching assembly 150.

[0044] In an embodiment, as shown in Figures 1-3 The first atmosphere switching assembly 140 is provided with a first compressor (not shown) and a first helium storage device (not shown), and the first compressor is connected with the first helium storage device.

[0045] In the embodiment, the first atmosphere switching assembly 140 comprises a first compressor and a first helium storage device; wherein the first helium storage device is used for compressing helium, so that it is more suitable for storage and transmission by compression; and the first helium storage device is used for storing the compressed helium to ensure that sufficient helium supply can be provided when needed. And in the atmosphere switching process, helium can be selectively introduced or discharged as needed to adjust the atmosphere in the first cabin. The second atmosphere switching assembly 150 comprises a second compressor (not shown) and a second helium storage device (not shown); the second compressor has the same effect as the first compressor; and the second helium storage device has the same effect as the first helium storage device, which will not be described here.

[0046] In an embodiment, as shown in Figures 1-3 The barrel body 111 is provided with a driving motor through hole (not shown) for adapting the driving motor 1231.

[0047] In the embodiment, in order to fix the isolation valve assembly 120 in the middle of the barrel body 111, a drive motor through hole is further arranged on the middle of the barrel body 111, so that the drive motor 1231 can pass through the drive motor through hole and be fixed on the barrel body 111, thereby facilitating the operation of the drive motor 1231 by the relevant staff.

[0048] In an embodiment, as shown in Figures 1-3 The barrel cover 112 is further provided with an inlet and outlet cover 117 for adapting the inlet and outlet (not shown) on the barrel cover 112.

[0049] In the embodiment, the inlet and outlet cover 117 is further arranged on the barrel cover 112 for adapting the inlet and outlet on the barrel cover 112. Specifically, during the replacement of the high temperature gas cooled reactor main equipment 200, the inlet and outlet cover 117 allows the relevant operating personnel to enter or exit the inside of the barrel through the inlet and outlet on the barrel cover 112, and forms a closed space in the inside of the barrel through the inlet and outlet cover 117, thereby preventing the radioactive gas in the inside of the barrel from polluting the external environment.

[0050] The utility model provides a kind of high temperature gas cooled reactor main equipment replacement device, comprising: the bottom of barrel assembly is fixedly connected with high temperature gas cooled reactor main equipment, to separate the inside of barrel assembly and external environment;Hoisting assembly is set to the top of barrel assembly, to be used to hoist high temperature gas cooled reactor main equipment out;Isolation valve assembly is set to the middle of barrel assembly, to divide the inside of barrel assembly into first cabin and second cabin, and be used to control the atmosphere isolation and through in the replacement process of high temperature gas cooled reactor main equipment in first cabin and second cabin;First atmosphere switching assembly is communicated with first cabin, to be used to control the atmosphere type of first cabin, second atmosphere switching assembly is communicated with second cabin, to be used to control the atmosphere type of second cabin;So, under the condition that high temperature gas cooled reactor does not stop, the problem that main equipment cannot be isolated from radioactive helium atmosphere and removed for offline maintenance is solved, and the efficiency of main equipment maintenance is improved.

[0051] The above is only a specific embodiment of the utility model, but the protection scope of the utility model is not limited to this, any skilled person in the art can easily think of various equivalent modifications or replacements within the technical range disclosed by the utility model, and these modifications or replacements should be covered in the protection scope of the utility model. Therefore, the protection scope of the utility model should be subject to the protection scope of claims.

Claims

1. A high temperature gas cooled reactor primary equipment replacement device, characterized by, The application relates to a high-temperature gas cooled reactor device, which comprises a cylinder assembly, an isolation valve assembly, a first atmosphere switching assembly, a second atmosphere switching assembly and a hoisting assembly; the bottom of the cylinder assembly is fixedly connected with a high-temperature gas cooled reactor main device; the isolation valve assembly is fixedly arranged in the middle part of the cylinder assembly to divide the inside of the cylinder assembly into a first cabin and a second cabin, and the isolation valve assembly is used for controlling the atmosphere isolation and through connection of the first cabin and the second cabin during the replacement of the high-temperature gas cooled reactor main device; the first atmosphere switching assembly is communicated with the first cabin, the second atmosphere switching assembly is communicated with the second cabin; and the hoisting assembly is arranged at the top of the cylinder assembly and is used for hoisting the high-temperature gas cooled reactor main device. The cylinder assembly comprises a cylinder body and a cylinder cover, the cylinder cover is arranged at the top of the cylinder body, and the cylinder body and the cylinder cover are fixedly connected; a cylinder flange is arranged on the bottom of the cylinder body, and the cylinder flange is fixedly connected with a main helium fan flange on the high-temperature gas cooled reactor main device.

2. The device according to claim 1, characterized in that, The isolation valve assembly comprises a fixed frame, a plurality of valve petals and a driving mechanism, the fixed frame is fixedly arranged in the middle part of the cylinder body, the plurality of valve petals and the driving mechanism are arranged on the fixed frame, and the root of each valve petal in the plurality of valve petals is connected with the driving mechanism.

3. The device according to claim 2, characterized in that, The driving mechanism comprises a plurality of transmission torsion rods and a driving motor, each transmission torsion rod in the plurality of transmission torsion rods is connected with an adjacent transmission torsion rod, each transmission torsion rod is connected with a corresponding valve petal in the plurality of valve petals, and the root of one valve petal in the plurality of valve petals is connected with the driving motor through a corresponding transmission torsion rod.

4. The device according to claim 3, characterized in that, The cylinder assembly further comprises a first reinforcing rib, a second reinforcing rib, a third reinforcing rib and a fourth reinforcing rib, the first reinforcing rib, the second reinforcing rib, the third reinforcing rib and the fourth reinforcing rib are uniformly distributed around the cylinder body, and the bottom of the first reinforcing rib, the bottom of the second reinforcing rib, the bottom of the third reinforcing rib and the bottom of the fourth reinforcing rib are fixedly arranged on the cylinder flange.

5. The device according to claim 2, characterized in that, The hoisting assembly comprises a bridge mechanism, the bridge mechanism comprises a first support beam, a second support beam and a third support beam, one end of the first support beam is connected with the top end of the first reinforcing rib through the cylinder body, the other end of the first support beam is connected with the top end of the second reinforcing rib through the cylinder body, one end of the second support beam is connected with the top end of the third reinforcing rib through the cylinder body, the other end of the second support beam is connected with the top end of the fourth reinforcing rib through the cylinder body, one end of the third support beam is movably connected with the first support beam, and the other end of the third support beam is movably connected with the second support beam.

6. The device according to claim 5, characterized in that, The application further comprises a first air inlet pipe and a first air outlet pipe, one end of the first air inlet pipe is communicated with the first cabin, the other end of the first air inlet pipe is communicated with the first atmosphere switching assembly, one end of the first air outlet pipe is communicated with the first cabin, and the other end of the first air outlet pipe is communicated with the first atmosphere switching assembly.

7. The device according to claim 1, wherein ​ 8. The device according to claim 7, characterized in that, The first atmosphere switching assembly is provided with a first compressor and a first helium storage device, and the first compressor is connected with the first helium storage device.

9. The device according to claim 4, characterized in that, The driving motor through hole is arranged on the barrel body and is used for adapting the driving motor.

10. The device according to claim 9, characterized in that, The inlet and outlet cover is further arranged on the barrel cover and is used for adapting the inlet and outlet on the barrel cover.

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