Waterproof and heat-insulating sleeve and pool-type reactor having the same

Abstract

The present invention discloses a waterproof and heat-insulating sleeve and a pool-type reactor having the same. The pool-type reactor includes: a water pool; a pressure vessel and a reactor core, the reactor core is arranged inside the pressure vessel, and the pressure vessel has a vessel inlet and a vessel outlet; a sleeve, the sleeve is fixedly installed in the water pool and immersed below the liquid level of the water pool, the pressure vessel is installed inside the sleeve to be isolated from the water pool, and the sleeve is provided with a through hole for a primary loop pipeline to penetrate. In the pool-type reactor of the present invention, a sleeve is arranged outside the pressure vessel and the reactor core. The sleeve can provide a waterproof space for the control rod drive mechanism, avoid the inconvenience of underwater design or operation, play a heat-insulating role for the pressure vessel and the reactor core, reduce the heat exchange of the pressure vessel wall, reduce heat loss, and the sleeve can play a role in radioactive shielding for the reactor core, reduce the radiation dose, and has good safety and practicability.

Description

[0001] Cross - reference to related applications

[0002] This application claims the priority of the Chinese patent applications with application numbers "201822268115.5" and "201811632705.X" and the invention title of "Pool - type reactor" submitted by State Power Investment Corporation Science and Technology Research Institute Co., Ltd. on December 29, 2018. Technical field

[0003] The present invention belongs to the technical field of reactors. Specifically, it relates to a waterproof and heat - insulating sleeve and a pool - type reactor having the same. Background art

[0004] With the development of new energy technologies, nuclear power generation has gradually become an important force in new energy development. Among them, a nuclear reactor includes a pressure vessel and a reactor core. At present, the installation stability of the pressure vessels of many nuclear reactors is poor, and the heat - insulating effect on the inside of the reactor core is not good. If the nuclear reactor is located underwater, the control rod drive mechanism is installed outside the pressure vessel and immersed in water. This not only makes operation difficult, but also the long - term immersion is likely to cause structural damage to the control rod drive mechanism, resulting in a decline in stability and reliability, and there is room for improvement. Summary of the invention

[0005] The present invention aims to solve at least one of the technical problems existing in the prior art. For this purpose, the present invention provides a pool - type reactor, in which a sleeve is sleeved outside the pressure vessel of the pool - type reactor, which can play a role in stably supporting the pressure vessel and has the effects of waterproofing and heat - insulating the pressure vessel.

[0006] The pool - type reactor according to an embodiment of the present invention includes: a water pool; a pressure vessel and a reactor core, the reactor core is arranged inside the pressure vessel, and the pressure vessel has a vessel inlet and a vessel outlet; a sleeve, the sleeve is fixedly installed in the water pool and immersed below the liquid level of the water pool, the pressure vessel is installed inside the sleeve to be isolated from the water pool, and the sleeve is provided with a through - hole for a primary loop pipeline to pass through.

[0007] In the pool - type reactor according to an embodiment of the present invention, a sleeve is sleeved outside the pressure vessel and the reactor core. The sleeve can provide a waterproof space for the control rod drive mechanism, avoid the inconvenience of underwater design or operation, play a heat - insulating role for the pressure vessel and the reactor core, reduce the heat exchange of the pressure vessel wall, reduce heat loss, and the sleeve can play a role in radioactive shielding for the reactor core, reducing the radiation dose, and has good safety and practicability.

[0008] A pool-type reactor according to an embodiment of the present invention, wherein a radial support portion is provided on the peripheral wall of the sleeve, the radially inner end of the radial support portion protrudes inwardly from the inner peripheral wall of the sleeve and presses against the outer peripheral wall of the pressure vessel, and the radially outer end of the radial support portion protrudes outwardly from the outer peripheral wall of the sleeve and is fixedly connected to the side wall of the pool.

[0009] A pool-type reactor according to an embodiment of the present invention, wherein the radial support portion is an annular plate surrounding the sleeve.

[0010] A pool-type reactor according to an embodiment of the present invention, wherein through holes are provided in the portion of the radial support portion located outside the sleeve.

[0011] A pool-type reactor according to an embodiment of the present invention, wherein the radial support portion includes at least two arranged at intervals in the vertical direction.

[0012] A pool-type reactor according to an embodiment of the present invention, wherein a support structure fixedly connected to the bottom wall of the pool is provided in the sleeve, the pressure vessel is fixedly connected to the support structure, and a positioning groove for supporting a pipeline is provided at a position higher than the through hole in the support structure.

[0013] A pool-type reactor according to an embodiment of the present invention, wherein the lower end of the pressure vessel is fixedly connected to the bottom wall of the pool, and the lower end of the sleeve is fixedly connected to the bottom wall of the pool.

[0014] A pool-type reactor according to an embodiment of the present invention, wherein a sleeve flange is provided at the bottom of the sleeve, and the sleeve flange is fixedly connected to the bottom wall of the pool.

[0015] A pool-type reactor according to an embodiment of the present invention, wherein the sleeve includes: a cylindrical body and a top cover, the upper end of the cylindrical body is open, and the top cover is connected to the upper end of the cylindrical body and closes the upper end of the cylindrical body.

[0016] A pool-type reactor according to an embodiment of the present invention, wherein the cylindrical body includes a upper cylindrical section, a cylindrical neck, and a lower cylindrical section connected in sequence from top to bottom, the lower cylindrical section covers the outside of the pressure vessel, the upper end of the pressure vessel has a reactor top mechanism, the reactor top mechanism closes the upper end of the pressure vessel, and the upper cylindrical section covers the outside of the reactor top mechanism.

[0017] A pool-type reactor according to an embodiment of the present invention, wherein the outer diameter of the upper cylindrical section is larger than the outer diameter of the lower cylindrical section, and the cylindrical neck is a tapered shape that gradually tapers from top to bottom.

[0018] A pool-type reactor according to an embodiment of the present invention, wherein a gate is provided at the lower part of the sleeve.

[0019] The present invention also proposes a waterproof and heat-insulating sleeve.

[0020] The waterproof and heat-insulating sleeve according to an embodiment of the present invention is the sleeve described in any of the above embodiments.

[0021] The waterproof and heat-insulating sleeve and the above-mentioned pool-type reactor have the same advantages over the prior art, which will not be elaborated herein.

[0022] The additional aspects and advantages of the present invention will be partially given in the following description, partially become apparent from the following description, or be understood through the practice of the present invention. Description of the Drawings

[0023] The above and / or additional aspects and advantages of the present invention will become apparent and be readily understood from the description of the embodiments in conjunction with the following drawings, wherein:

[0024] Figure 1 is a schematic structural diagram of a pool-type reactor according to an embodiment of the present invention.

[0025] Reference Signs:

[0026] Pool-type reactor 100,

[0027] Pool 1, pressure vessel 2, vessel inlet 21, vessel outlet 22, reactor top mechanism 23, reactor core 3, sleeve 4, upper cylinder section 41, cylinder neck 42, lower cylinder section 43, radial support portion 44, through hole 441, sleeve flange 45, support structure 46, through hole 47, top cover 48, gate 5. Detailed Embodiments

[0028] Embodiments of the present invention will be described in detail below. Examples of the embodiments are shown in the drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

[0029] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present invention. In addition, features defined as "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, unless otherwise specified, the meaning of "a plurality" is two or more.

[0030] In the description of the present invention, it should be noted that, unless otherwise clearly specified and defined, the terms "mounted", "connected", and "coupled" shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0031] The following refers to Figure 1 Describe the pool-type reactor 100 according to an embodiment of the present invention. A sleeve 4 is sleeved outside the pressure vessel 2 of the pool-type reactor 100. The sleeve 4 can separate the pressure vessel 2 from the cooling water in the pool 1 to prevent the control rod drive mechanism installed on the pressure vessel 2 from being immersed in the cooling water and ensure the safe operation of the control rod drive mechanism. Moreover, the sleeve 4 can play a role in shielding and heat preservation for the pressure vessel 2 and the reactor core 3, so that the temperature inside the pressure vessel 2 is stable, the operating environment is maintained in a safe and stable state, the nuclear reaction inside the reactor core 3 proceeds normally, and the safety and stability of the reactor are improved.

[0032] As Figure 1 shown, the pool-type reactor 100 according to an embodiment of the present invention includes: a pool 1, a pressure vessel 2, a reactor core 3, and a sleeve 4.

[0033] Among them, as Figure 1As shown, the sleeve 4 is fixedly installed in the pool 1. The pool 1 is filled with water, and the sleeve 4 is immersed below the liquid level of the pool 1. The bottom of the sleeve 4 can be fixedly connected to the concrete of the bottom wall of the pool 1. The bottom of the sleeve 4 is provided with a sleeve flange 45, and the sleeve flange 45 is fixedly connected to the bottom wall of the pool 1 to seal the bottom of the sleeve 4 and keep the structure of the sleeve 4 stable. Thus, the inner cavity of the sleeve 4 is separated from the pool 1, and the water in the pool 1 cannot flow into the inner cavity of the sleeve 4.

[0034] As Figure 1 shown, the pressure vessel 2 is installed in the sleeve 4 to isolate the pressure vessel 2 from the pool 1. The outer wall of the pressure vessel 2 and the inner wall of the sleeve 4 are spaced apart, and there is no liquid between the pressure vessel 2 and the sleeve 4, so the heat flow is small. Thus, there is less heat exchange between the pressure vessel 2 and the pool 1, which can play a role in heat preservation for the internal environment of the pressure vessel 2, avoiding excessive heat in the pressure vessel 2 from diffusing into the pool 1 through the sleeve 4, reducing heat loss, and improving the heat preservation performance of the pool-type reactor 100. It should be noted that the pressure vessel 2 is provided with a control rod drive mechanism. Thus, by separating the outside of the pressure vessel 2 from water through the sleeve 4, it can prevent the control rod drive mechanism from being immersed in water for a long time, providing a waterproof space for the control rod drive mechanism and ensuring that the control rod drive mechanism always has a stable and reliable working state. Among them, during the normal operation of the reactor, the inside of the sleeve 4 is filled with inert gas to reduce the heat loss of the coolant loop system, and at the same time, it also provides an environment isolated from water for the control rod drive mechanism and other instrument control facilities.

[0035] The core 3 is used for nuclear reactions. As Figure 1 shown, the core 3 is arranged in the pressure vessel 2. The pressure vessel 2 can play a role in protecting the operating equipment in the core 3 to keep the internal structure of the core 3 stable and avoid the influence of external environmental changes on the efficiency of nuclear reactions. In this way, by sleeving the sleeve 4 outside the pressure vessel 2 and the core 3, it can play a role in shielding protection for the inside of the core 3 to reduce the radiation dose of nuclear reactions, reduce the heat exchange of the pressure vessel 2, and provide a heat preservation effect.

[0036] As Figure 1 shown, the sleeve 4 is provided with a through hole 47 through which the primary loop pipeline passes. There may be two through holes 47. The pressure vessel 2 has a vessel inlet 21 and a vessel outlet 22. One of the two through holes 47 is connected to the vessel inlet 21 through a pipeline, and the other of the two through holes 47 is connected to the vessel outlet 22 through a pipeline.

[0037] In this way, the container inlet 21 of the pressure vessel 2 is used to connect the inner cavity of the pressure vessel 2 with the water pool 1. The container inlet 21 can be connected to the water pool 1 through a pipeline extending to the through hole 47 of the sleeve 4, so that the water in the water pool 1 can enter the inner cavity of the pressure vessel 2 through the container inlet 21; the container outlet 22 of the pressure vessel 2 is used to connect the inner cavity of the pressure vessel 2 and the water pool 1. The container outlet 22 can be connected to the water pool 1 through a pipeline extending to the through hole 47 of the sleeve 4, so that the water in the inner cavity of the pressure vessel 2 can flow out into the water pool 1. Control valves for controlling on-off can be provided at both the container inlet 21 and the container outlet 22 to connect the inner cavity of the pressure vessel 2 and the water pool 1 through the control valves, thereby facilitating the intake or drainage of water in the pressure vessel 2.

[0038] It can be understood that the reactor core 3 is arranged in the pressure vessel 2. The reactor core 3 includes a plurality of operating devices for maintaining the stable progress of the nuclear reaction, and a large amount of heat will be generated during the process of the nuclear reaction. Therefore, injecting the water in the water pool 1 into the pressure vessel 2 through the container inlet 21 can play a role in cooling the operating devices of the reactor core 3 to avoid the over-high temperature of the operating devices, ensure that the operating devices are in a safe and stable working state, facilitate long-term use, and connect the inner cavity of the pressure vessel 2 and the water pool 1 through the container inlet 21 and the container outlet 22, so that the cooling water can circulate between the two, continuously cool and lower the temperature of the operating devices of the reactor core 3, and then keep the temperature of the operating devices within the safe range for a long time, which is beneficial to extending the service life of the pool-type reactor 100.

[0039] In the pool-type reactor 100 according to the embodiment of the present invention, a sleeve 4 is sleeved outside the pressure vessel 2 and the reactor core 3. The sleeve 4 can provide a waterproof space for the control rod drive mechanism, avoid the inconvenience of underwater design or operation, play a heat preservation role for the pressure vessel 2 and the reactor core 3, reduce the heat exchange of the wall of the pressure vessel 2, reduce heat loss, and the sleeve 4 can play a role in radioactive shielding for the reactor core 3, reduce the radiation dose, and has good safety and practicability.

[0040] In some embodiments, as Figure 1 shown, the lower end of the pressure vessel 2 is fixedly connected to the bottom wall of the water pool 1 to make the bottom wall of the pressure vessel 2 and the water pool 1 relatively fixed. The lower end of the sleeve 4 is fixedly connected to the bottom wall of the water pool 1 to make the sleeve 4 and the bottom wall of the water pool 1 relatively fixed. In this way, both the sleeve 4 and the pressure vessel 2 are stably supported on the bottom wall of the water pool 1, which can ensure the stable structure of the sleeve 4 and the pressure vessel 2, avoid the shaking of the sleeve 4 and the pressure vessel 2 in the water pool 1, and improve the stability and safety of the pool-type reactor 100.

[0041] In some embodiments, as Figure 1As shown, the sleeve 4 includes: a cylinder body and a top cover. The upper end of the cylinder body is open, and the top cover is connected to the upper end of the cylinder body and closes the upper end of the cylinder body, so that the inside of the sleeve 4 is separated from the pool 1. And the top cover can be connected to the cylinder body by threaded fasteners, which can not only ensure the sealing inside the sleeve 4 but also facilitate later disassembly and installation.

[0042] In some embodiments, as Figure 1 shown, the cylinder body includes a cylinder upper section 41, a cylinder neck section 42, and a cylinder lower section 43 that are sequentially connected from top to bottom. That is, the lower end of the cylinder upper section 41 is connected to the upper end of the cylinder neck section 42, the lower end of the cylinder neck section 42 is connected to the upper end of the cylinder lower section 43, and the cylinder lower section 43 covers the outside of the pressure vessel 2. The cylinder lower section 43 can separate the pressure vessel 2 from the pool 1, and the cylinder lower section 43 can play a heat preservation role for the pressure vessel 2 and the reactor core 3, reducing the heat exchange on the wall of the pressure vessel 2 and reducing heat loss. The cylinder upper section 41 is detachable. In this way, when it is necessary to replace the reaction fuel in the reactor core or repair the internal operating equipment, the cylinder upper section 41 can be removed, which is convenient for installation and facilitates later maintenance or replacement.

[0043] Among them, the lower end of the cylinder lower section 43 is fixedly connected to the bottom wall of the pool 1 through a sleeve flange 45, and the lower end structure is stable. The upper end of the pressure vessel 2 has a reactor top mechanism 23, and the reactor top mechanism 23 closes the upper end of the pressure vessel 2. The cylinder upper section 41 covers the outside of the reactor top mechanism 23. The cylinder upper section 41 can separate the reactor top mechanism 23 from the pool 1, and the outer diameter of the cylinder upper section 41 is larger than the outer diameter of the cylinder lower section 43. In this way, the cylinder upper section 41 has a larger radial space, and the reactor top mechanism 23 includes an integrated reactor top and ventilation mechanism. In this way, the space of the cylinder upper section 41 can reserve enough working space for the reactor top mechanism 23, ensuring that the space around the ventilation mechanism is open and the ventilation is smooth.

[0044] Among them, the cylinder neck section 42 is a tapered shape that gradually tapers from top to bottom. The lower end of the cylinder upper section 41 is connected to the upper end of the cylinder neck section 42 and has the same outer diameter, and the upper end of the cylinder lower section 43 is connected to the lower end of the cylinder neck section 42 and has the same outer diameter. That is, the outer diameter of the cylinder upper section 41 is larger than the outer diameter of the cylinder lower section 43, and the radial space of the cylinder upper section 41 is larger. It should be noted that the reactor top mechanism 23 is arranged at the upper end of the pressure vessel 2 and is radially aligned with the cylinder upper section 41. In this way, the space of the cylinder upper section 41 can avoid the movement of the reactor top mechanism 23, and can prevent the inner wall of the cylinder upper section 41 from interfering with the operation of the reactor top mechanism 23, improving the rationality of the structural design. Of course, the outer diameters of each section of the sleeve 4 can be designed according to actual operation needs, or the outer diameters of each section can be set to be the same, and the functions of shielding, heat preservation, and waterproofing can also be realized.

[0045] In some embodiments, a radial support portion 44 is provided on the peripheral wall of the sleeve 4. The radially inner end of the radial support portion 44 protrudes inwardly beyond the inner peripheral wall of the sleeve 4, and the radially inner end of the radial support portion 44 presses against the outer peripheral wall of the pressure vessel 2. The radially outer end of the radial support portion 44 protrudes outwardly beyond the outer peripheral wall of the sleeve 4 and is spaced apart from the side wall of the pool 1. That is, the inner end of the radial support portion 44 is connected to the pressure vessel 2, the middle portion of the radial support portion 44 is fixedly connected to the sleeve 4, the outer end of the radial support portion 44 is a free end and extends into the pool 1.

[0046] In this way, the sleeve 4 and the pressure vessel 2 support each other through the radial support portion 44, so that the sleeve 4 and the pressure vessel 2 are relatively fixed in the radial direction, which can ensure that the pressure vessel 2 remains stable within the sleeve 4, avoid the radial driving force generated by the core 3 affecting the stability of the pressure vessel 2 due to the heat generated by the core 3, keep the pressure vessel 2 stable in the horizontal plane, and further prevent the pressure vessel 2 from tilting or collapsing along the horizontal plane, ensure the safety of the operating environment of the core 3, and improve the safety and reliability of the pool-type reactor 100.

[0047] Among them, the radial support portion 44 is an annular plate shape surrounding the sleeve 4. In this way, the inner ring edge of the radial support portion 44 presses against the outer peripheral wall of the pressure vessel 2, and the radial support portion 44 effectively presses against each position of the pressure vessel 2 in the circumferential direction, so that the forces on each position of the pressure vessel 2 in the circumferential direction are uniform, improving the stability of the pressure vessel 2, and the outer ring edge of the radial support portion 44 extends into the pool 1 and is fixedly connected to the side wall of the pool 1.

[0048] As Figure 1 shown, the outer ring edge of the support portion 44 extends into the side wall of the pool 1 and is fixed to the concrete. Thus, the pressure vessel 2, the sleeve 4 and the pool 1 are relatively fixed, which can keep the pressure vessel 2 and the sleeve 4 balanced and stable in the horizontal plane and reduce the influence of the unilateral force on the pressure vessel 2 on the overall structure.

[0049] The portion of the radial support portion 44 located outside the sleeve 4 is provided with through holes 441. The through holes 441 penetrate along the thickness direction of the radial support portion 44, that is, the through holes 441 extend in the up and down direction. In this way, when the water in the pool 1 flows, the water on one side of the radial support portion 44 can flow to the other side through the through holes 441. For example, the water on the upper side of the radial support portion 44 can flow to the lower side of the radial support portion 44 through the through holes 441. Thus, the resistance of the radial support portion 44 to the flowing liquid can be reduced, and the excessive impact force of the flowing liquid on the radial support portion 44 can be avoided, ensuring the structural stability of the sleeve 4 and the pressure vessel 2.

[0050] In some embodiments, the radial support portion 44 includes at least two, and at least two radial support portions 44 are arranged at intervals in the vertical direction, such as Figure 1As shown, there are two radial support parts 44, and the two radial support parts 44 are arranged at intervals in the vertical direction. As Figure 1 shown, one of the two radial support parts 44 is located above the other. Thus, the stability of the sleeve 4 and the pressure vessel 2 can be improved.

[0051] A gate 5 is provided at the lower part of the sleeve 4. As Figure 1 shown, the gate 5 is provided at the lower part of the sleeve 4 and is in the liquid of the pool 1. Among them, the gate 5 is normally closed and is controlled to open in case of accidents or other special situations, so that the water in the pool 1 enters the inside of the sleeve 4 from the outside of the lower part of the sleeve 4, so that the inside of the sleeve 4 is filled with water to inhibit the deterioration of the accident and improve the safety of the pool-type reactor 100.

[0052] In some embodiments, as Figure 1 shown, a support structure 46 is provided inside the sleeve 4. The support structure 46 is fixedly connected to the bottom wall of the pool 1, the pressure vessel 2 is fixedly connected to the support structure 46, and the support structure 46 is provided with a positioning groove at a position higher than the through hole 47. The positioning groove is used to support the pipeline so that the pipeline layout is stable.

[0053] As Figure 1 shown, the pressure vessel 2 is supported by the support structure 46. The lower end of the support structure 46 is fixedly connected to the bottom wall of the pool 1. The upper end of the support structure 46 is provided with a positioning groove. The inlet pipeline and the outlet pipeline are supported by the positioning groove, so as to ensure the reasonable water inlet and outlet of the container inlet 21 and the container outlet 22, reduce the vibration of the inlet and outlet pipelines, provide axial support for the entire pressure vessel 2, and its internal annular cavity provides radial support for the pressure vessel 2, which is beneficial to improving the safety and reliability of the pool-type reactor 100.

[0054] The present invention also proposes a waterproof and heat-insulating sleeve.

[0055] According to the waterproof and heat-insulating sleeve of the embodiment of the present invention, the waterproof and heat-insulating sleeve is the sleeve 4 in the above embodiment. The sleeve 4 can provide a waterproof space for the control rod drive mechanism, avoid the inconvenience of underwater design or operation, play a heat-insulating role for the pressure vessel 2 and the reactor core 3, reduce the heat exchange of the pressure vessel wall, reduce heat loss, and the sleeve 4 can play a role in radioactive shielding for the reactor core 3, reduce the radiation dose, and has good safety and practicability.

[0056] In the description of this specification, the description referring to terms such as "one embodiment", "some embodiments", "schematic embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0057] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A pool-type reactor, characterized in that, Comprising: A water pool; A pressure vessel and a core, the core being disposed inside the pressure vessel, and the pressure vessel having a vessel inlet and a vessel outlet; A sleeve, the sleeve being fixedly installed in the water pool and immersed below the liquid level of the water pool, the pressure vessel being installed inside the sleeve to be isolated from the water pool, the sleeve being provided with through holes through which a primary loop pipeline passes, the loop pipeline connecting the water pool and the pressure vessel, there being two of the through holes, the pressure vessel having a vessel inlet and a vessel outlet, one of the two through holes being connected to the vessel inlet through a pipeline, the other of the two through holes being connected to the vessel outlet through a pipeline, the vessel inlet of the pressure vessel being used to connect the inner cavity of the pressure vessel to the water pool, the vessel inlet being connected to the water pool through a pipeline extending to the through hole of the sleeve, so that the water in the water pool enters the inner cavity of the pressure vessel from the vessel inlet; the vessel outlet of the pressure vessel being used to connect the inner cavity of the pressure vessel and the water pool, the vessel outlet being connected to the water pool through a pipeline extending to the through hole of the sleeve, so that the water in the inner cavity of the pressure vessel flows out into the water pool; The sleeve includes a cylinder body, the cylinder body including a cylinder body upper section, a cylinder body neck section, and a cylinder body lower section connected in sequence from top to bottom, the cylinder body lower section covering the outside of the pressure vessel, the upper end of the pressure vessel having a reactor head mechanism, the reactor head mechanism closing the upper end of the pressure vessel, the cylinder body upper section covering the outside of the reactor head mechanism, the cylinder body upper section spacing the reactor head mechanism from the water pool, and the outer diameter of the cylinder body upper section being greater than the outer diameter of the cylinder body lower section, the reactor head mechanism including an integrated reactor head and a ventilation mechanism, and the space of the cylinder body upper section reserving sufficient working space for the reactor head mechanism.

2. The pool-type reactor according to claim 1, wherein, The peripheral wall of the sleeve is provided with a radial support portion, the radially inner end of the radial support portion protruding inward from the inner peripheral wall of the sleeve and pressing against the outer peripheral wall of the pressure vessel, and the radially outer end of the radial support portion protruding outward from the outer peripheral wall of the sleeve and being fixedly connected to the side wall of the water pool.

3. The pool-type reactor according to claim 2, characterized in that, The radial support portion is an annular plate shape surrounding the sleeve.

4. The pool-type reactor according to claim 3, characterized in that, The portion of the radial support portion located outside the sleeve is provided with through holes.

5. The pool-type reactor according to claim 2, characterized in that, The radial support portion includes at least two arranged at intervals in the vertical direction.

6. The pool-type reactor according to any one of claims 1-5, characterized in that, A support structure fixedly connected to the bottom wall of the water pool is provided inside the sleeve, the pressure vessel being fixedly connected to the support structure, and the support structure being provided with a positioning groove for supporting a pipeline at a position higher than the through hole.

7. The pool-type reactor according to any one of claims 1-5, characterized in that, The lower end of the pressure vessel is fixedly connected to the bottom wall of the water pool, and the lower end of the sleeve is fixedly connected to the bottom wall of the water pool.

8. The pool-type reactor according to claim 6, characterized in that, The bottom of the sleeve is provided with a sleeve flange, and the sleeve flange is fixedly connected to the bottom wall of the water pool.

9. The pool-type reactor according to any one of claims 1-5, characterized in that, The sleeve includes a top cover, the upper end of the cylinder body being open, and the top cover being connected to the upper end of the cylinder body and closing the upper end of the cylinder body.

10. The pool-type reactor according to claim 1, characterized in that, The outer diameter of the cylinder body upper section is greater than the outer diameter of the cylinder body lower section, and the cylinder body neck section is a tapered shape that gradually tapers from top to bottom.

11. The pool-type reactor according to any one of claims 1-5, characterized in that, A gate is provided at the lower part of the sleeve.

12. A waterproof and heat-insulating sleeve, characterized in that, The waterproof and heat-insulating sleeve is the sleeve described in any one of claims 1-11.

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