阅读说明：本技术 一种双堆共用反应堆厂房的核能供热堆布置方法 (Nuclear energy heat supply reactor arrangement method of double-reactor shared reactor factory building ) 是由 夏栓 马娟 黄若涛 武心壮 李逸 韩鹏 于 2021-10-14 设计创作，主要内容包括：本发明涉及核能供热堆布置技术领域,具体公开了一种双堆共用反应堆厂房的核能供热堆布置方法,同两个一体化反应堆本体及包容其的安全壳容纳于同一个反应堆厂房内,除专设安全设施及与反应堆运行直接相关的辅助系统单堆配置以外,其余安全相关及放射性包容的系统尽量共用,从而减少抗震I类反应堆厂房的占地面积和体容量,提高经济性；在保障安全性、可运行性、施工可行性的基本前提下,将反应堆冷却剂系统和专设安全设施布置大大简化,双堆共用装换料系统和部分辅助、三废和支持系统,相比传统堆型,大大减少了抗震I类核岛厂房的占地面积和体容量,降低了建造成本,具有优越的经济性能。(The invention relates to the technical field of nuclear energy heat supply reactor arrangement, and particularly discloses a nuclear energy heat supply reactor arrangement method of a double-reactor shared reactor plant, wherein two integrated reactor bodies and containment vessels containing the reactor bodies are contained in the same reactor plant, except for single-reactor configuration of a special safety facility and an auxiliary system directly related to the operation of a reactor, other safety-related and radioactivity-contained systems are shared as much as possible, so that the floor area and the volume capacity of an earthquake-resistant I-type reactor plant are reduced, and the economy is improved; on the basic premise of ensuring safety, operability and construction feasibility, the arrangement of a reactor coolant system and a special safety facility is greatly simplified, and a refueling system and a partial auxiliary, three-waste and supporting system are shared by double piles.)

1. A nuclear energy heat supply reactor arrangement method of a double-reactor shared reactor plant is characterized in that: the method comprises the following specific steps:

(1) the radioactive reactor plant and the non-radioactive electrical control plant share a raft foundation, and are earthquake-resistant I-type plants;

(2) the nuclear island plant control area comprises a nuclear island plant control area, a low-level radioactive or non-radioactive system facility, a radioactive ventilation system, an auxiliary plant room and a reactor plant room, wherein the nuclear island plant room is positioned at one side of the reactor plant room; the electric control plant is positioned at the other side of the reactor plant; the heating plant and the electrical system which is not related to safety are arranged on the other two sides of the reactor factory building; the reactor pool and the loading and unloading system are arranged on the central axis of the reactor factory building, and the auxiliary system, the three-waste system and the related electric distribution room and the local control room are respectively arranged on two sides;

(3) the reactor structure integrates the reactor core, the control rod driving mechanism, the voltage stabilizer and the steam generator into integrated equipment, and two integrated reactor bodies are immersed in the same containment pool and accommodated in the same reactor plant together after being contained by respective independent containment; the underwater hull refueling system adopting reactor core integral hoisting comprises a double-reactor shared fuel storage shelf, a control driving mechanism storage shelf, a transportation channel, a spent fuel pool, a loading pool, a cleaning pool, a reactor plant traveling crane, a loading and unloading machine, a new fuel elevator, a fuel grabbing machine, fuel transportation equipment and a plant external transportation channel;

(4) the reactor coolant system and the special safety facility are arranged in a single pile: the reactor coolant system and the reactor core cooling system are contained in a steel containment, the secondary side passive residual heat removal system and the containment heat conduction system are arranged in a reactor pool outside the shell, a process connecting pipe and an electric penetrating piece penetrating through the containment penetrate out of the top of the containment and are connected with the outer part of the containment through a quick-release joint;

(5) the auxiliary system and the support system related to the operation of the reactor are configured in a single-pile mode, and other systems are shared by double piles; the middle-level and high-level discharge systems are arranged in a reactor plant, the low-level and non-level discharge process systems are arranged on the ground floor of the auxiliary plant, the radioactive ventilation system is arranged on the second floor above the ground of the auxiliary plant, and a reasonable radiation partition is formed by isolating a floor slab from the ground floor;

(6) the safety-level electrical system, the main control room, the shutdown related equipment room and the matched heating and ventilation facilities are all arranged in an electrical control plant, and the non-safety-level electrical system is arranged in a heat supply station and is adjacent to a reactor plant.

2. The method of claim 1, wherein the method comprises the steps of: the electric control plant is divided into five layers, and the layer height is matched with the reactor plant; the main control room, the technical support center, the 1E-level electric room, the direct current equipment room, the power center, the computer room and the like are arranged in the plant, and the non-radioactive ventilation system serving the plant is arranged on the top layer.

3. The method of claim 1, wherein the method comprises the steps of: the reactor factory building has five layers, two underground layers and three above-ground layers; the central shaft of the reactor pool is an axis, and the normal waste heat discharge system, the chemical volume control system, the spent fuel pool cooling and purifying system and the radioactive gas treatment system which are arranged in a single reactor are arranged on the lowest level of the same reactor plant in a mirror image manner; the collection and buffer device of the double-stack common radioactive waste system is also located at this level.

4. The method of claim 1, wherein the method comprises the steps of: the single-pile chemical volume control system drainage equipment, the volume control box and related pipelines are arranged in the underground layer in a mirror image manner; the resin beds and filters of the chemical volume control system, the spent fuel cooling and purifying system and the radioactive waste liquid system are also intensively arranged in the underground layer; the double-pile shared loading and reloading system, the outward transportation channel, the waste solid radioactive filter element storage room, the process and the electric penetration area are also positioned on the layer; other radioactive solid waste treatment systems and process pipe valves are located one above ground level.

5. The method of claim 1, wherein the method comprises the steps of: the second layer on the ground mainly comprises a reactor plant hall and an operation platform layer, wherein the upper part of the containment and the upper part of the reactor body are placed on the operation platform during refueling, and the traveling crane for hoisting the main equipment components is arranged in the uppermost area of the reactor hall.

6. The method of claim 1, wherein the method comprises the steps of: the auxiliary factory building is divided into two layers which are positioned on a ground layer and an overground layer; the low-level emission equipment and pipelines of the double-pile shared radioactive waste liquid system, the boric acid equipment and pipelines of the chemical volume control system and the control area inlet and outlet of the reactor plant are arranged on the ground layer; besides the demineralized water system and the equipment cooling water system, the double-pile shared non-radioactive process system is also arranged on the ground floor, and the equipment room is communicated with the plant area; the radioactive ventilation system is positioned on the second floor above the ground and serves a reactor factory building and an auxiliary factory building.

Technical Field

The invention relates to the technical field of nuclear energy heat supply reactor arrangement, in particular to a nuclear energy heat supply reactor arrangement method of a double-reactor shared reactor factory building.

Background

The energy problem concerns the national security and economic development global situation, and also concerns the ecological environment protection and climate change process. The energy supply structure of China is mainly fossil fuels such as coal, petroleum and natural gas, and with a series of concerns about environmental problems such as greenhouse effect, PM2.5 and atmospheric pollution and the gradual reduction of fossil energy, the state is dedicated to energy structure adjustment, renewable energy is vigorously developed, and nuclear energy resources are safely utilized.

In recent years, the northern area of China mostly uses fossil fuel to heat in winter, so the northern area of China is often seriously puzzled by haze. The nuclear energy is the only practical and clear modern energy which can replace conventional energy in a large scale and is economical, and the technology of research, development, operation, maintenance and the like of the nuclear energy in the aspect of civil nuclear power is mature. Nuclear energy heating is a new development direction for nuclear energy application. The basic working principle is as follows: the nuclear reactor generates nuclear fission to release heat energy to heat a coolant of a main loop, and then the heat energy is exchanged through an intermediate isolation loop to supply hot water to users. Nuclear energy heating is a practical choice for adjusting energy structures and treating environmental problems in China in the measurement of various novel energy utilization forms.

The nuclear energy heating technology needs to consider the economy on the basis of safety, operability and construction feasibility, and has wide market application prospect. In the conventional nuclear energy heat supply nuclear island plant layout scheme, a single-pile stamp arrangement mode is adopted, namely, a single reactor is arranged in an independent reactor plant and is provided with an independent auxiliary plant, and the anti-seismic I-type plant occupies a larger area and has higher construction cost.

In order to solve the problems, the scheme considers that the arrangement of the dual-reactor nuclear heat supply plant adopts two reactors to be contained by independent containment vessels, and the two reactors are immersed in the same containment vessel pool and contained in the same reactor plant so as to reduce the occupied area of the anti-seismic plant and improve the economical efficiency.

Disclosure of Invention

The invention aims to form a nuclear energy heat supply reactor arrangement method of a double-reactor shared reactor factory building, wherein two integrated reactor bodies and containment vessels containing the reactor bodies are contained in the same reactor factory building, except for single-reactor configuration of special safety facilities and auxiliary systems directly related to reactor operation, other safety-related and radioactivity-contained systems are shared as much as possible, so that the occupied area and the volume capacity of an earthquake-resistant I-type reactor factory building are reduced, and the economical efficiency is improved.

In order to achieve the purpose, the invention provides the following technical scheme: a nuclear energy heat supply reactor arrangement method of a double-reactor shared reactor factory building comprises the following specific steps:

(1) the radioactive reactor plant and the non-radioactive electrical control plant share a raft foundation, and are earthquake-resistant I-type plants;

(2) the nuclear island plant control area comprises a nuclear island plant control area, a low-level radioactive or non-radioactive system facility, a radioactive ventilation system, an auxiliary plant room and a reactor plant room, wherein the nuclear island plant room is positioned at one side of the reactor plant room; the electric control plant is positioned at the other side of the reactor plant; the heating plant and the electrical system which is not related to safety are arranged on the other two sides of the reactor factory building; the reactor pool and the loading and unloading system are arranged on the central axis of the reactor factory building, and the auxiliary system, the three-waste system and the related electric distribution room and the local control room are respectively arranged on two sides;

(3) the reactor structure integrates the reactor core, the control rod driving mechanism, the voltage stabilizer and the steam generator into integrated equipment, and two integrated reactor bodies are immersed in the same containment pool and accommodated in the same reactor plant together after being contained by respective independent containment; the underwater hull refueling system adopting reactor core integral hoisting comprises a double-reactor shared fuel storage shelf, a control driving mechanism storage shelf, a transportation channel, a spent fuel pool, a loading pool, a cleaning pool, a reactor plant traveling crane, a loading and unloading machine, a new fuel elevator, a fuel grabbing machine, fuel transportation equipment and a plant external transportation channel;

(4) the reactor coolant system and the special safety facility are arranged in a single pile: the reactor coolant system and the reactor core cooling system are contained in a steel containment, the secondary side passive residual heat removal system and the containment heat conduction system are arranged in a reactor pool outside the shell, a process connecting pipe and an electric penetrating piece penetrating through the containment penetrate out of the top of the containment and are connected with the outer part of the containment through a quick-release joint;

(5) the auxiliary system and the support system related to the operation of the reactor are configured in a single-pile mode, and other systems are shared by double piles; the middle-level and high-level discharge systems are arranged in a reactor plant, the low-level and non-level discharge process systems are arranged on the ground floor of the auxiliary plant, the radioactive ventilation system is arranged on the second floor above the ground of the auxiliary plant, and a reasonable radiation partition is formed by isolating a floor slab from the ground floor;

(6) the safety-level electrical system, the main control room, the shutdown related equipment room and the matched heating and ventilation facilities are all arranged in an electrical control plant, and the non-safety-level electrical system is arranged in a heat supply station and is adjacent to a reactor plant.

As a preferred scheme of the invention, the electric control plant is divided into five layers, and the layer height is matched with the reactor plant; the main control room, the technical support center, the 1E-level electric room, the direct current equipment room, the power center, the computer room and the like are arranged in the plant, and the non-radioactive ventilation system serving the plant is arranged on the top layer.

As a preferred scheme of the invention, the reactor factory building has five layers, two underground layers and three above-ground layers; the central shaft of the reactor pool is an axis, and the normal waste heat discharge system, the chemical volume control system, the spent fuel pool cooling and purifying system and the radioactive gas treatment system which are arranged in a single reactor are arranged on the lowest level of the same reactor plant in a mirror image manner; the collection and buffer device of the double-stack common radioactive waste system is also located at this level.

As a preferred scheme of the invention, the single-pile chemical volume control system drainage equipment, the volume control box and the related pipelines are arranged in a subsurface layer in a mirror image manner; the resin beds and filters of the chemical volume control system, the spent fuel cooling and purifying system and the radioactive waste liquid system are also intensively arranged in the underground layer; the double-pile shared loading and reloading system, the outward transportation channel, the waste solid radioactive filter element storage room, the process and the electric penetration area are also positioned on the layer; other radioactive solid waste treatment systems and process pipe valves are located one above ground level.

As a preferred scheme of the invention, the overground second floor mainly comprises a reactor plant hall and an operation platform, the upper part of the containment vessel and the upper part of the reactor body are placed on the operation platform during refueling, and the traveling crane for hoisting the main equipment components is arranged in the uppermost area of the reactor hall.

As a preferred scheme of the invention, the auxiliary factory building is divided into two layers which are positioned on a ground layer and an overground layer; the low-level emission equipment and pipelines of the double-pile shared radioactive waste liquid system, the boric acid equipment and pipelines of the chemical volume control system and the control area inlet and outlet of the reactor plant are arranged on the ground layer; besides the demineralized water system and the equipment cooling water system, the double-pile shared non-radioactive process system is also arranged on the ground floor, and the equipment room is communicated with the plant area; the radioactive ventilation system is positioned on the second floor above the ground and serves a reactor factory building and an auxiliary factory building.

Compared with the prior art, the invention has the beneficial effects that:

according to the nuclear energy heat supply reactor arrangement method of the double-reactor shared reactor factory building, provided by the invention, on the basic premise of ensuring safety, operability and construction feasibility, the arrangement of a reactor coolant system and a special safety facility is greatly simplified, and a double-reactor shared loading and unloading system and a partial auxiliary, three-waste and supporting system greatly reduce the occupied area and volume capacity of an earthquake-resistant class I nuclear island factory building and reduce the construction cost compared with the traditional reactor type, so that the method has excellent economic performance.

Drawings

FIG. 1 is a schematic diagram of the arrangement of two underground layers of a nuclear power heating reactor according to the present invention;

FIG. 2 is a schematic diagram of a one-level arrangement of a nuclear power heating reactor of the present invention;

FIG. 3 is a schematic diagram of a one-layer arrangement of the ground of a nuclear power heating reactor of the present invention;

FIG. 4 is a schematic diagram of a two-layer arrangement of the ground of a nuclear power heating reactor of the present invention;

FIG. 5 is a schematic diagram of a three-level ground arrangement of a nuclear power heating reactor of the present invention;

FIG. 6 is a schematic diagram of a nuclear-powered thermal reactor plant elevation arrangement.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "vertical", "upper", "lower", "horizontal", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

Referring to fig. 1-6, the present invention provides a technical solution: a nuclear energy heat supply reactor arrangement method of a double-reactor shared reactor factory building comprises the following steps:

(1) the radioactive reactor plant and the non-radioactive electrical control plant share a raft foundation, and are earthquake-resistant I-type plants;

(2) the nuclear island plant control area comprises a nuclear island plant control area, a low-level radioactive or non-radioactive system facility, a radioactive ventilation system, an auxiliary plant room and a reactor plant room, wherein the nuclear island plant room is positioned at one side of the reactor plant room; the electric control plant is positioned at the other side of the reactor plant; the heating plant and the electrical system which is not related to safety are arranged on the other two sides of the reactor factory building; the reactor pool and the loading and unloading system are arranged on the central axis of the reactor factory building, and the auxiliary system, the three-waste system and the related electric distribution room and the local control room are respectively arranged on two sides;

(3) the reactor structure integrates the reactor core, the control rod driving mechanism, the voltage stabilizer and the steam generator into integrated equipment, and two integrated reactor bodies are immersed in the same containment pool and accommodated in the same reactor plant together after being contained by respective independent containment; the underwater hull refueling system adopting reactor core integral hoisting comprises a double-reactor shared fuel storage shelf, a control driving mechanism storage shelf, a transportation channel, a spent fuel pool, a loading pool, a cleaning pool, a reactor plant traveling crane, a loading and unloading machine, a new fuel elevator, a fuel grabbing machine, fuel transportation equipment and a plant external transportation channel;

(4) the reactor coolant system and the special safety facility are arranged in a single pile: the reactor coolant system and the reactor core cooling system are contained in a steel containment, the secondary side passive residual heat removal system and the containment heat conduction system are arranged in a reactor pool outside the shell, a process connecting pipe and an electric penetrating piece penetrating through the containment penetrate out of the top of the containment and are connected with the outer part of the containment through a quick-release joint;

(5) the auxiliary system and the support system related to the operation of the reactor are configured in a single-pile mode, and other systems are shared by double piles; the middle-level and high-level discharge systems are arranged in a reactor plant, the low-level and non-level discharge process systems are arranged on the ground floor of the auxiliary plant, the radioactive ventilation system is arranged on the second floor above the ground of the auxiliary plant, and a reasonable radiation partition is formed by isolating a floor slab from the ground floor;

(6) the safety-level electrical system, the main control room, the shutdown related equipment room and the matched heating and ventilation facilities are all arranged in an electrical control plant, and the non-safety-level electrical system is arranged in a heat supply station and is adjacent to a reactor plant.

Specifically, the electric control plant is divided into five layers, and the layer height is matched with the reactor plant; the main control room, the technical support center, the 1E-level electric room, the direct current equipment room, the power center, the computer room and the like are arranged in the plant, and the non-radioactive ventilation system serving the plant is arranged on the top layer.

Specifically, the reactor factory building has five layers, two underground layers and three above-ground layers; the central shaft of the reactor pool is an axis, and the normal waste heat discharge system, the chemical volume control system, the spent fuel pool cooling and purifying system and the radioactive gas treatment system which are arranged in a single reactor are arranged on the lowest level of the same reactor plant in a mirror image manner; the collection and buffer device of the double-stack common radioactive waste system is also located at this level.

Specifically, the single-pile chemical volume control system drainage equipment, the volume control box and related pipelines are arranged in an underground layer in a mirror image manner; the resin beds and filters of the chemical volume control system, the spent fuel cooling and purifying system and the radioactive waste liquid system are also intensively arranged in the underground layer; the double-pile shared loading and reloading system, the outward transportation channel, the waste solid radioactive filter element storage room, the process and the electric penetration area are also positioned on the layer; other radioactive solid waste treatment systems and process pipe valves are located one above ground level.

Specifically, the second layer above the ground mainly comprises a reactor plant hall and an operation platform layer, and the components on the upper part of the containment and the upper part of the reactor body are placed on the operation platform during refueling, and are used for hoisting the traveling crane of the main equipment component to be installed in the uppermost area of the reactor hall.

Specifically, the auxiliary factory building is divided into two layers, namely a ground layer and an overground layer; the low-level emission equipment and pipelines of the double-pile shared radioactive waste liquid system, the boric acid equipment and pipelines of the chemical volume control system and the control area inlet and outlet of the reactor plant are arranged on the ground layer; besides the demineralized water system and the equipment cooling water system, the double-pile shared non-radioactive process system is also arranged on the ground floor, and the equipment room is communicated with the plant area; the radioactive ventilation system is positioned on the second floor above the ground and serves a reactor factory building and an auxiliary factory building.

In order to make the technical means, creation features, achievement objectives and effects of the present invention easy to understand, the following description is further supplemented with the schematic layout inside the reactor building shown in fig. 6.

When a reactor of a reactor factory is shut down and reloaded, the top of a containment vessel and a pipeline at the top of a reactor pool are required to be quickly decoupled and disassembled, an upper containment vessel is hoisted away, then an upper barrel of a reactor pressure vessel is hoisted away and respectively stored on an operation platform, a water gate communicated with the reloading pool is hoisted away and is placed at a temporary storage position on the right side of the pool, and then underwater reloading operation is carried out. The lower spaces of the reactor pool and the spent fuel pool are effectively utilized, and relevant equipment and pipelines of the process system are reasonably arranged according to system functions and interfaces.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.