CN210039649U

CN210039649U - Reactor and flow channel structure for reactor

Info

Publication number: CN210039649U
Application number: CN201920285728.1U
Authority: CN
Inventors: 韩万富; 黄天荣; 钟金童; 胡伦宝; 路广遥; 刘青松; 唐叔建; 芮旻; 周建明; 周国丰; 吴凤岐; 袁杰; 张超; 苏晓炜; 乔建毅; 陈青山
Original assignee: China General Nuclear Power Corp; China Nuclear Power Technology Research Institute Co Ltd; CGN Power Co Ltd
Current assignee: China General Nuclear Power Corp; China Nuclear Power Technology Research Institute Co Ltd; CGN Power Co Ltd; China Nuclear Power Institute Co Ltd
Priority date: 2019-03-06
Filing date: 2019-03-06
Publication date: 2020-02-07
Anticipated expiration: 2029-03-06

Abstract

The utility model relates to a reactor and a flow passage structure used for the reactor, wherein the flow passage structure comprises a guide cylinder which is arranged in a pressure container and is sleeved on the periphery of an in-reactor component; the guide cylinder comprises a cylinder body, a first connecting part and a second connecting part, wherein the cylinder body is tightly connected with the first sleeve and the second sleeve; the second sleeve is arranged at the outlet nozzle of the hanging basket and communicated with the outlet nozzle; a space is reserved between the inner wall surface of the cylinder and the outer side wall of the hanging basket to form a first annular cavity communicated with the first sleeve; a space is reserved between the outer side wall of the hanging basket and the inner side wall of the pressure container to form a second annular cavity communicated with the first annular cavity and the reactor internals, and the second annular cavity is arranged at one end of the cylinder body provided with a second connecting part; and a space is reserved between the outer side wall of the barrel and the inner side wall of the pressure container to form a third annular cavity isolated from the first annular cavity and the second annular cavity. The flow channel structure for the reactor can realize compact arrangement of double-layer sleeves, long pipelines are omitted, the LOCA accident probability is reduced, and the safety of the reactor is improved.

Description

Reactor and flow channel structure for reactor

Technical Field

The utility model relates to a nuclear reaction technical field, more specifically say, relate to a reactor and be used for runner structure of reactor.

Background

In some reactors, especially large pressurized water reactors, the pressure vessel is connected with the main pump and the steam generator through pipelines, and the steam generator is connected with the main pump through pipelines. A loop flow channel of the reactor enters a pressure vessel after being pressurized from a main pump, working media enter a reactor core through a descending section, enter a steam generator through a nozzle at an outlet of a hanging basket after being heated by the reactor core, and exchange heat between coolant and secondary loop water in the steam generator, and enter the main pump again through a pipeline from the steam generator.

However, it has the following problems: 1) the structural arrangement is not compact enough, and the risk of LOCA accidents is high; 2) The generating efficiency is low, and the lift of the main pump is long.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model lies in providing a compact structure arranges, the security performance is high, the runner structure for reactor that generating efficiency is high, the main pump lift is short, further provides a modified reactor.

The utility model provides a technical scheme that its technical problem adopted is: constructing a flow channel structure for a reactor, wherein the reactor comprises a pressure container, an in-reactor component arranged in the pressure container, a first sleeve for connecting or outputting a working medium and a second sleeve for connecting or outputting the working medium; the internals comprise a basket;

the flow passage structure comprises a guide cylinder which is arranged in the pressure container and sleeved on the periphery of the hanging basket; the guide cylinder comprises a cylinder body, a first connecting part and a second connecting part, wherein the first connecting part and the second connecting part are arranged at two ends of the cylinder body and are connected with the inner side wall of the pressure container;

the outer side walls of the first connecting part and the second connecting part are attached to the inner side wall of the pressure container; the first sleeve and the second sleeve are tightly connected with the cylinder body; the second sleeve is arranged at the outlet of the hanging basket and is communicated with the hanging basket;

a space is reserved between the inner wall surface of the cylinder and the outer side wall of the hanging basket to form a first annular cavity, and the first sleeve is communicated with the first annular cavity; a space is reserved between the outer side wall of the hanging basket and the inner side wall of the pressure container to form a second annular cavity communicated with the first annular cavity and the hanging basket, and the second annular cavity is arranged at one end, provided with a second connecting part, of the barrel body; and a space is reserved between the outer side wall of the barrel and the inner side wall of the pressure container to form a third annular cavity isolated from the first annular cavity and the second annular cavity, and the third annular cavity comprises a working medium input end and a working medium output end.

Preferably, the guide shell is arranged at a nozzle section of the pressure vessel; the inner diameter of one end, close to the second annular cavity, of the guide cylinder is larger than the outer diameter of the in-pile member, so that a channel for communicating the first annular cavity with the second annular cavity is formed.

Preferably, the guide shell is of an annular structure;

the annular structure comprises a cylindrical structure, a conical structure and a cylinder and cone combined structure.

Preferably, the inner diameter of the first connecting end of the cylinder body is equivalent to the outer diameter of the in-pile member.

Preferably, a first nozzle connected with the first sleeve and a second nozzle for the second sleeve to penetrate into and be connected with the hanging basket are arranged on the barrel; the first nozzle and the second nozzle are staggered and symmetrically arranged;

one end of the second nozzle is provided with an inner flange which protrudes towards the inner side of the cylinder body so as to be matched and positioned with the hanging basket.

Preferably, the first sleeve comprises a first pipe body and a first pipe body flange arranged on an outer ring of one end of the first pipe body connected with the first nozzle; first body one end stretches into in the first mouthpiece, first body flange subsides are established the inside wall of barrel.

Preferably, the second sleeve comprises a second pipe body and a second pipe body flange arranged on an outer ring of one end of the second pipe body connected with the second nozzle; one end of the second pipe body extends into the second pipe nozzle, and the second pipe body flange is arranged in the annular cavity of the inner flange and attached to the inner side wall of the cylinder body.

Preferably, the first connection portion comprises a first flange; the second connecting portion includes a second flange; and the outer wall surfaces of the first flange and the second flange are fixedly attached to the inner wall surface of the pressure container so as to isolate the third annular cavity from the first annular cavity and the second annular cavity.

Preferably, one end of the first flange is provided with an annular first sealing element; one end of the first sealing element is fixed with the first flange, and the outer wall surface of the first sealing element is fixedly attached to the inner side wall of the pressure container;

one end of the second flange is provided with an annular second sealing element; one end of the second sealing element is fixed with the second flange, and the outer wall surface of the second sealing element is attached to the inner wall surface of the pressure container.

Preferably, a gap is reserved between the first sleeve and the inner side wall of a third nozzle of the pressure container so as to form a channel communicated with the third annular cavity for the working medium to flow;

and a gap is reserved between the second sleeve and the inner side wall of the fourth nozzle of the pressure container so as to form a channel which is communicated with the third annular cavity and is used for the working medium to flow.

Preferably, the first sleeve is connected with an external main pump, the second sleeve is connected with an external steam generator, the working medium is pressurized by the main pump, enters the first annular cavity from the first sleeve and then enters the second annular cavity so as to enter the hanging basket, takes away fission heat generated by fuel fission, enters the second sleeve from an outlet nozzle of the hanging basket, and then enters the steam generator for heat exchange; and after the heat exchange of the working medium is finished, the working medium enters the third annular cavity through a channel formed between the fourth nozzle of the pressure container and the second sleeve, then enters the channel formed by the third nozzle of the pressure container and the first sleeve through the third annular cavity, and is output to the main pump, so that the primary circulation of the working medium is finished.

Preferably, the second sleeve is connected with an external main pump, the first sleeve is connected with an external steam generator, the working medium is pressurized by the main pump and then enters the hanging basket from the second sleeve, and after passing through the reactor core, enters the second annular cavity from an outlet nozzle of the hanging basket and then enters the first annular cavity, and is output from the first sleeve and enters the steam generator for heat exchange; and after the heat exchange of the working medium is finished, the working medium enters the third annular cavity through a channel formed by the third nozzle of the pressure container and the first sleeve, then enters a channel formed between the fourth nozzle of the pressure container and the second sleeve through the third annular cavity, and is output to the main pump, so that the primary circulation of the working medium is finished.

The utility model discloses still construct a reactor, be in including pressure vessel, setting pile internals among the pressure vessel, insert or output working medium's first sleeve pipe, output or the second sleeve pipe and the setting of inserting working medium are in among the pressure vessel the runner structure.

Implement the utility model discloses a reactor and be used for runner structure of reactor has following beneficial effect: the flow passage structure for the reactor is characterized in that a guide cylinder is arranged in the pressure vessel and positioned at the periphery of a hanging basket, so that a first annular cavity, a second annular cavity communicated with the first annular cavity and a third annular cavity isolated from the first annular cavity and the second annular cavity are formed, and a working medium can be connected to the first annular cavity through a first sleeve, flows into the second annular cavity from the first annular cavity and then flows into the hanging basket to take out heat of a reactor core in the hanging basket; the working medium can be output from the second sleeve after being heated, and the cooled working medium is input from the third ring cavity and then output from the third ring cavity; or the working medium can be connected into the hanging basket through the second sleeve, flows into the first annular cavity from the second annular cavity after taking the heat of the reactor core in the hanging basket, is output from the first sleeve, and flows into the third annular cavity after being cooled and is output from the third annular cavity. This a runner structure for reactor can realize the compact of reactor structure and arrange, improves the security of reactor, reduces to take place LOCA accident risk, promotes the generating efficiency, reduces the lift of pump.

This reactor is through setting up this runner structure for reactor, and it has the advantage that structural arrangement is compact, the security performance is high, the generating efficiency is high, the main pump lift is short.

Drawings

The invention will be further explained with reference to the drawings and examples, wherein:

fig. 1 is a schematic structural view of a reactor and a flow channel structure for the reactor according to the present invention;

fig. 2 is a schematic structural diagram of the flow channel structure guide cylinder for a reactor of the present invention.

Detailed Description

In order to clearly understand the technical features, objects, and effects of the present invention, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Fig. 1 and 2 show a preferred embodiment of the flow channel structure for a reactor according to the present invention. The flow channel structure for a reactor may be provided in a reactor including a pressure vessel 10, internals, a first sleeve 40 and a second sleeve 50; this internals sets up in this pressure vessel 10, and this first sleeve pipe 40 can be used to insert the working medium, and this second sleeve pipe 50 can be used for exporting the working medium, specifically, this runner structure setting for the reactor is in pressure vessel, and it can give the working medium and advance a novel runner of internals structure, can be used to realize the compact of reactor structure and arrange, improves the security of reactor, reduces to take place LOCA accident risk, promotes the generating efficiency, reduces the lift of pump. The working fluid referred to in this application may be a coolant.

As shown in fig. 1 and 2, the flow passage structure includes a guide shell 30; the guide shell 30 can be disposed in the pressure vessel 10 and can be sleeved on the periphery of the reactor internals, specifically, the reactor internals can include a basket 20, and the guide shell 30 is sleeved on the periphery of the basket 20; gaps are reserved between the guide cylinder 30 and the pressure vessel 10 and between the guide cylinder and the in-pile components, so that a channel for the circulation of working media is formed. The guide shell 30 is a hollow structure, and can be made of a high temperature and high pressure resistant material. Specifically, it may be made of a metal material resistant to high temperature and high pressure.

Further, the guide shell 30 is disposed at the nozzle section of the pressure vessel 10, and includes a shell 31, a first connecting portion 32 and a second connecting portion 33; the guide shell 30 is an annular structure, which may be a cylindrical structure, a conical structure, a combination of a cylinder and a cone, or other shapes. In this embodiment, the cylinder 31 may be a combination of a cylinder and a cone. The first connection portion 32 and the second connection portion 33 are disposed at two ends of the cylinder 31, and are connected to the inner sidewall of the pressure vessel 10, so that an isolation chamber can be formed between the outer sidewall of the cylinder 31 and the pressure vessel 10.

Specifically, the inner diameter of one end of the cylinder 31 provided with the first connecting part 32 is equivalent to the outer diameter of the hanging basket 20, and a gap is left between the inner wall surface of the cylinder 31 and the outer wall surface of the hanging basket 20 to form a first annular cavity 61; the height of the guide cylinder 30 is less than that of the basket 20, and the guide cylinder is sleeved on the middle upper portion of the basket 20, so that a space is reserved between the lower portion of the basket 20 and the pressure vessel 10, a space is reserved between the outer side wall of the basket 20 and the inner side wall of the pressure vessel 10, a second annular cavity 62 is formed, the second annular cavity 62 is arranged at one end of the cylinder 31, which is provided with the second connecting portion 33, and is communicated with the basket 20, specifically, the second annular cavity is communicated with the basket 20, so that working medium can be input into the basket 20, or working medium output by the basket 20 can be received. The cylinder 31 has an end provided with the second connecting portion 33 having an inner diameter larger than that of the basket 20 so as to form a passage communicating the first annular chamber 61 and the second annular chamber 62.

The cylinder 31 is also provided with a first nozzle 311 and a second nozzle 312; the first nozzle 311 and the second nozzle 312 are arranged side by side along the circumferential direction of the drum 31; the two or more of the three or more are staggered and symmetrically arranged, and the number of the three or more is not limited. The first nozzle 311 can be adapted to couple with the first sleeve 40 to facilitate communication with the first annulus 61. The second nozzle 312 may be used for connection with the second sleeve 50 and for an outlet nozzle for the second sleeve 50 to penetrate into the basket 20, connecting with the outlet nozzle of the basket 20 so as to communicate with the basket 20.

The outer side walls of the first connecting portion 32 and the second connecting portion 33 are tightly attached to the inner side wall of the pressure vessel 10, so that the cylinder 31 is fixed in the pressure vessel 10, a space is reserved between the outer side wall of the cylinder 31 and the inner side wall of the pressure vessel 10, a third annular cavity 63 isolated from the first annular cavity 61 and the second annular cavity 62 can be formed at the space, and the third annular cavity 63 has a working medium input end and a working medium output end, so that the input and the output of a working medium are facilitated.

In this embodiment, the first connection portion 32 may include a first flange; the outer wall surface of the first flange is tightly attached to the inner wall surface of the pressure vessel 10; it can be integrally formed with the cylinder 31 or can be detachably connected to the cylinder 31. In this embodiment, it is preferably integrally formed with the barrel 31. It is to be understood that in other embodiments, the first connection portion 32 is not limited to a first flange; it may be an outer flange that projects toward the inner wall surface of the pressure vessel 10 and is in close contact with the inner wall surface of the pressure vessel 10.

In this embodiment, the second connection portion 33 may include a second flange; the outer wall surface of the second flange is tightly attached to the inner wall surface of the pressure vessel 10; so as to isolate the third annular cavity 36 from the first annular cavity 61 and the second annular cavity 62, and the second flange may be integrally formed with the cylinder 31 or detachably connected with the cylinder 31. In this embodiment, it is preferably integrally formed with the barrel 31. It is understood that in other embodiments, the second connection portion 33 is not limited to the second flange; it may be an outer flange that projects toward the inner wall surface of the pressure vessel 10 and is in close contact with the inner wall surface of the pressure vessel 10.

In this embodiment, one end of the first flange is provided with a first seal 34; the first seal 34 may be used to limit dead-side flow. The first sealing member 34 is disposed around the periphery of the basket 20, and has one end fixed to the first flange and an outer wall surface fixed to the inner wall of the pressure vessel 10, so as to fix the cylinder 31 and seal the third annular chamber 63. The first seal 34 is annular, which may be a seal ring; specifically, it may be a silicone ring, a rubber ring, etc., and it is understood that in other embodiments, the first sealing element 34 is not limited to the silicone ring or the rubber ring. In other embodiments, the first seal 34 may be omitted.

One end of the second flange is provided with a second sealing element 35; the second seal 35 may be used to limit ineffective bypass flow. The second sealing element 35 is sleeved on the periphery of the hanging basket 20, and may be annular, and the aperture thereof is larger than the size of the hanging basket 20, so as to facilitate the communication between the first annular cavity 61 and the second annular cavity 62, one end of the second sealing element 35 is fixed with the second flange, the outer side wall thereof is attached to the inner wall surface of the pressure vessel 10, so as to be matched and fixed with the first sealing element 34, fix the cylinder 31, and seal the third annular cavity 63. Specifically, the second sealing member 35 may be a silicone ring, a rubber ring, or the like, but it is understood that in other embodiments, the second sealing member 35 is not limited to the silicone ring or the rubber ring. In other embodiments, the second seal 35 may be omitted.

The first sleeve 40 and the second sleeve 50 are tightly coupled with the cylinder 31. Specifically, the first sleeve 40 includes a first body 41 and a first body flange 42; one end of the first tube 41 extends into the first nozzle 311 to communicate with the first annular chamber 61. The first pipe flange 42 is disposed at one end of the first pipe 41 connected to the first nozzle 311, is located at an outer ring of the first pipe 41, and can be attached to an inner sidewall of the cylinder 31, so as to prevent the working medium in the first annular chamber 61 from flowing out of the first nozzle 311 to the third annular chamber 63.

The second sleeve 50 includes a second body 51 and a second body flange 52; one end of the second tube 51 extends into the second nozzle 311, and the second tube flange 52 is disposed at the end of the second tube 51 connected to the second nozzle 311 and located at the outer ring of the second tube 51. An inner flange 3121 is provided at one end of the second nozzle 312; the inner flange 3121 protrudes toward the inner side of the cylinder 31 to be located in cooperation with the basket 20, and the second pipe flange 52 is disposed in the annular cavity of the inner flange 3121 and can be attached to the inner sidewall of the cylinder 31 to prevent the working medium in the basket 20 from flowing out or prevent the working medium in the third annular cavity 63 from flowing in.

In this embodiment, the first sleeve 40 is communicated with the first annular chamber 61 through the first nozzle 311, and a space is left between the first sleeve and the inner side wall of the third nozzle 11 of the pressure vessel 10, the space can be used for forming a channel for flowing a working medium, the working medium in the third annular chamber 63 can be output from the channel, and the working medium output end can be arranged on the channel. The first sleeve 40 may be connected to an external main pump. In this embodiment, the first casing 40 is preferably connected to an external main pump. The main pump includes an intake passage and a pressurizing passage. The inlet channel is communicated with the third annular cavity 63 through the channel, so that the working medium in the third annular cavity 63 is output to the main pump; the pressurizing passage is communicated with the first sleeve 40 so as to output the working medium to the first annular cavity 61. It is understood that in other embodiments, the first sleeve 40 is not limited to connection with the main pump.

In this embodiment, the second sleeve 50 is spaced apart from the inner sidewall of the fourth nozzle 12 of the pressure vessel 10, and the space is communicated with the third annular chamber 63, which may form a channel for the working medium to flow, and the working medium may be input into the third annular chamber 63. The working medium input end of the third ring cavity 63 is arranged on the channel. The second sleeve 50 is connected with an external steam generator, the steam generator comprises a heat absorption channel and a heat release channel, the second sleeve 50 is connected with the input end of the heat release channel, and the output end of the heat release channel is communicated with the third ring cavity. The second sleeve 50 can output the working medium with heat to the heat release channel, so that the working medium can exchange heat with the water body in the heat absorption channel, the heat of the working medium is reduced, and the cooled working medium can be output to the third annular cavity from the output end of the heat release channel. It is to be understood that in other embodiments, the second sleeve 50 is not limited to being connected to the steam generator.

In this embodiment, the working medium can be pressurized by the main pump, output from the pressurizing channel, enter the first annular cavity 61 through the first sleeve 40, enter the second annular cavity after being reversed, enter the basket 20 from the output port of the second annular cavity, enter the second sleeve 50 from the outlet nozzle of the basket 20 after passing through the core, then output to the steam generator from the second sleeve 50 for heat exchange, specifically output to the heat-releasing channel of the steam generator, perform heat exchange with the water provided by the two loops in the heat-absorbing channel of the steam generator, then output from the heat-releasing channel of the steam generator, enter the third annular cavity 63 through the channel formed between the second nozzle and the second sleeve of the pressure vessel after completing the heat exchange of the working medium, enter the channel formed by the first nozzle and the first sleeve of the pressure vessel through the third annular cavity, output to the main pump; and the working fluid is output to a flow inlet channel of the main pump, so that the primary circulation of the working fluid is completed.

In other embodiments, the first sleeve 40 is spaced from the inner side wall of the third nozzle 11 of the pressure vessel 10, and the space is communicated with the third annular chamber 63, which may form a working medium flow passage for feeding the working medium into the third annular chamber 63. The working medium input end of the third ring cavity 63 is arranged on the channel. The first sleeve 40 is connected with an external steam generator, the steam generator comprises a heat absorption channel and a heat release channel, the first sleeve 40 is connected with the input end of the heat release channel, and the output end of the heat release channel is communicated with the third ring cavity through the channel. This first sleeve pipe 40 can export the working medium after taking the heat to this heat release channel to carry out the heat exchange with the water in this heat absorption channel, thereby reduce the heat of this working medium, the working medium after the cooling can be exported to this third ring chamber from this heat release channel's output.

In other embodiments, the second sleeve 50 is connected to the first annular chamber 61 through the first nozzle 311, and is spaced from the inner side wall of the second nozzle of the pressure vessel 10 by a gap, which can be used to form a working medium flow passage, and the working medium output end of the third annular chamber 63 can be arranged on the passage. The second jacket 50 may be connected to an external steam generator or to an external main pump. In this embodiment, the second sleeve 50 is preferably connected to an external main pump. The main pump includes an intake passage and a pressurizing passage. The inlet channel is communicated with the third annular cavity 63 through the channel, so that the working medium in the third annular cavity 63 is output to the main pump; the pressurizing passage is communicated with the second sleeve 50 so as to output the working medium to the first annular cavity 61.

In other embodiments, the working fluid may be pressurized by the main pump, output from the pressurizing passage thereof, and enters the basket 20 through the second sleeve 50, passes through the core, enters the second annular cavity 62 from the outlet nozzle of the basket, enters the first annular cavity 61, is output from the first sleeve 40, enters the steam generator for heat exchange, particularly enters the heat release channel of the steam generator for heat exchange with the water body provided by the two loops in the heat absorption channel of the steam generator, then, after the heat exchange of the working medium is completed, the working medium enters the third ring cavity 63 through a channel formed by the third nozzle 11 of the pressure vessel 10 and the first sleeve 40, and then enters a channel formed between the fourth nozzle 12 of the pressure vessel and the second sleeve 50 from the third ring cavity 63 to be output to the main pump, and specifically to be output to a flow inlet channel of the main pump, so that the cycle of the heat exchange of the working medium and the cold exchange of the working medium is completed.

Figure 1 also shows a preferred embodiment of the reactor of the invention.

The reactor of the utility model can be a pressurized water reactor, which comprises a pressure vessel 10, an in-reactor component, a first sleeve 40, a second sleeve 50 and a flow passage structure 30; the internals 10 are arranged in the pressure vessel, the flow channel structure 30 is arranged in the pressure vessel 10, and the flow channel structure can be used for forming a new working medium flow channel; the first sleeve 40 may be in communication with the flow passage structure 30, which may be connected to a main pump or a steam generator for receiving or discharging the working fluid, and the second sleeve 50 is in communication with the internals, which may be connected to a steam generator or a main pump for receiving or discharging the working fluid.

In this embodiment, the first sleeve 40 may be connected to a main pump, and a pressurizing passage of the main pump may output a working medium to the first sleeve 40, and then to the internals through the first annular cavity 61 and the second annular cavity 62 to take away heat from the core in the internals. The second sleeve 50 is connected with the steam generator, and the second sleeve 50 conveys the heated working medium to a heat release channel of the steam generator, exchanges heat with the water body in a heat absorption channel of the steam generator, outputs the working medium to a third annular cavity from an output end of the heat release channel, and finally conveys the working medium to a main pump from an output end of the working medium of the third annular cavity 63.

Of course, it will be understood that in other embodiments, the second sleeve 50 may be connected to the main pump, the pressurized channel of the main pump may deliver working fluid to the second sleeve 50 for removing heat from the internals and entering the first sleeve 40 through the second annulus 62 and the first annulus 61, and the first sleeve 40 may be connected to the steam generator to deliver heated working fluid to the heat-releasing channel of the steam generator for heat exchange with the water in the heat-absorbing channel of the steam generator, and then output from the output end of the heat-releasing channel to the third annulus 63, and finally output from the working fluid output end of the third annulus 63 to the main pump.

It is to be understood that the foregoing examples merely represent preferred embodiments of the present invention, and that the description thereof is more specific and detailed, but not intended to limit the scope of the invention; it should be noted that, for those skilled in the art, the above technical features can be freely combined, and several modifications and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention; therefore, all changes and modifications that come within the meaning and range of equivalency of the claims are to be embraced within their scope.

Claims

1. A flow channel structure for a reactor, wherein the reactor comprises a pressure vessel (10), an in-reactor component arranged in the pressure vessel (10), a first sleeve (40) for connecting or outputting a working medium, and a second sleeve (50) for connecting or outputting the working medium; the internals comprise a basket (20); it is characterized in that the preparation method is characterized in that,

the flow passage structure comprises a guide cylinder (30) which is arranged in the pressure container (10) and sleeved on the periphery of the hanging basket (20); the guide cylinder (30) comprises a cylinder body (31), a first connecting part (32) and a second connecting part (33), wherein the first connecting part and the second connecting part are arranged at two ends of the cylinder body (31) and are connected with the inner side wall of the pressure container (10);

the outer side walls of the first connecting part (32) and the second connecting part (33) are tightly attached to the inner side wall of the pressure container (10); the first sleeve (40) and the second sleeve (50) are tightly connected with the cylinder body (31); the second sleeve (50) is arranged at an outlet nozzle of the hanging basket (20) and is communicated with the hanging basket (20);

a space is reserved between the inner wall surface of the barrel (31) and the outer side wall of the hanging basket (20) to form a first annular cavity (61), and the first sleeve (40) is communicated with the first annular cavity (61); a space is reserved between the outer side wall of the hanging basket (20) and the inner side wall of the pressure vessel (10) to form a second annular cavity (62) communicated with the first annular cavity (61) and the hanging basket (20); and a space is reserved between the outer side wall of the cylinder (31) and the inner side wall of the pressure container (10) to form a third annular cavity (63) isolated from the first annular cavity (61) and the second annular cavity (62).

2. The flow channel structure for a reactor according to claim 1, wherein the guide shell (30) is provided at a nozzle section of the pressure vessel (10);

the inner diameter of one end, close to the second annular cavity (62), of the guide cylinder (30) is larger than the outer diameter of the hanging basket (20) so as to form a passage for communicating the first annular cavity (61) with the second annular cavity (62).

3. The flow channel structure for a reactor according to claim 1, wherein the guide shell (30) is an annular structure;

the annular structure comprises a cylindrical structure, a conical structure and a combined structure of a cylinder and a cone.

4. The flow channel structure for a reactor according to claim 1, wherein a first nozzle (311) connected with the first sleeve (40) and a second nozzle (312) for the second sleeve (50) to penetrate and be connected with the basket (20) are arranged on the barrel (31); the first nozzle (311) and the second nozzle (312) are staggered and symmetrically arranged;

one end of the second nozzle (312) is provided with an inner flange (3121) protruding toward the inside of the cylinder (31) to be engaged with the basket (20).

5. The flow channel structure for a reactor according to claim 4, wherein the first sleeve (40) comprises a first pipe body (41) and a first pipe body flange (42) provided at an outer periphery of an end of the first pipe body (41) connected to the first nozzle (311); one end of the first pipe body (41) extends into the first pipe nozzle (311), and the first pipe body flange (42) is attached to the inner side wall of the cylinder body (31).

6. The flow channel structure for a reactor according to claim 4, wherein the second sleeve (50) comprises a second pipe body (51) and a second pipe body flange (52) provided at an outer circumference of an end of the second pipe body (51) connected to the second nozzle (312); one end of the second pipe body (51) extends into the second nozzle (312), and the second pipe body flange (52) is arranged in the annular cavity of the inner flange (3121) and attached to the inner side wall of the cylinder body (31).

7. The flow channel structure for a reactor according to claim 1, wherein the first connection portion (32) includes a first flange; the second connection portion (33) comprises a second flange; the outer wall surfaces of the first flange and the second flange are attached to the inner wall surface of the pressure container (10) so as to isolate the third annular cavity (63) from the first annular cavity (61) and the second annular cavity (62).

8. The flow channel structure for a reactor according to claim 7, wherein one end of the first flange is provided with an annular first seal member (34); one end of the first sealing element (34) is fixed with the first flange, and the outer side wall of the first sealing element is fixedly attached to the inner side wall of the pressure container (10);

one end of the second flange is provided with an annular second sealing element (35); one end of the second sealing element (35) is fixed with the second flange, and the outer side wall of the second sealing element is fixedly attached to the inner wall surface of the pressure container (10).

9. The flow channel structure for the reactor according to claim 1, wherein the first sleeve (40) is spaced from the inner side wall of the third nozzle (11) of the pressure vessel (10) to form a channel for the working medium to flow, which is communicated with the third annular chamber (63);

and a gap is reserved between the second sleeve (50) and the inner side wall of the fourth nozzle (12) of the pressure container (10) to form a channel communicated with the third annular cavity (63) for working medium to flow.

10. The flow channel structure for a reactor according to claim 1, wherein the first sleeve (40) is connected with an external main pump, the second sleeve (50) is connected with an external steam generator, the working fluid is pressurized by the main pump, then enters the first annular cavity (61) from the first sleeve (40) and then enters the second annular cavity (62) so as to enter the basket (20), and then enters the second sleeve (50) from an outlet nozzle of the basket (20) and then enters the steam generator for heat exchange after passing through the core; and after the heat exchange of the working medium is finished, the working medium enters the third annular cavity (63) through a channel formed between the fourth nozzle (12) of the pressure container (10) and the second sleeve (50), then enters the channel formed by the third nozzle (11) of the pressure container (10) and the first sleeve (40) through the third annular cavity (63), and is output to the main pump, so that the primary circulation of the working medium is finished.

11. The flow channel structure for the reactor as claimed in claim 1, wherein the second sleeve (50) is connected with an external main pump, the first sleeve (40) is connected with an external steam generator, the working medium is pressurized by the main pump, enters the basket (20) from the second sleeve (50), enters the second annular chamber (62) from an outlet nozzle of the basket (20) after passing through the core, enters the first annular chamber (61), is output from the first sleeve (40) and enters the steam generator for heat exchange; after the heat exchange of the working medium is finished, the working medium enters the third annular cavity (63) through a channel formed by the third nozzle (11) of the pressure container (10) and the first sleeve (40), then enters a channel formed between the fourth nozzle (12) of the pressure container (10) and the second sleeve (50) through the third annular cavity (63), and is output to the main pump, so that the primary circulation of the working medium is finished.

12. A reactor, characterized by comprising a pressure vessel (10), internals arranged in the pressure vessel (10), a first sleeve (40) for receiving or outputting a working medium, a second sleeve (50) for outputting or receiving a working medium, and the flow channel structure of any one of claims 1 to 11 arranged in the pressure vessel (10).