CN115013731A - Auxiliary pressure relief device - Google Patents
Auxiliary pressure relief device Download PDFInfo
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- CN115013731A CN115013731A CN202210814441.XA CN202210814441A CN115013731A CN 115013731 A CN115013731 A CN 115013731A CN 202210814441 A CN202210814441 A CN 202210814441A CN 115013731 A CN115013731 A CN 115013731A
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- Prior art keywords
- pressure relief
- filter
- gas
- relief device
- auxiliary pressure
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D1/00—Pipe-line systems
- F17D1/02—Pipe-line systems for gases or vapours
- F17D1/04—Pipe-line systems for gases or vapours for distribution of gas
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D35/00—Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
- B01D35/02—Filters adapted for location in special places, e.g. pipe-lines, pumps, stop-cocks
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D3/00—Arrangements for supervising or controlling working operations
- F17D3/01—Arrangements for supervising or controlling working operations for controlling, signalling, or supervising the conveyance of a product
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
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- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
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Abstract
本发明涉及一种辅助泄压装置，用于对核电厂房的安全壳内的气体进行排放，其包括分流管路和泄压组件。分流管路包括安装端和连接端，安装端用于与安全壳的排气管可拆卸连接并连通；泄压组件的进气端与连接端连接并连通，泄压组件的排气端用于与外界环境连通；其中，经排气管流经的至少部分气体能够沿分流管路流向泄压组件以进行排放。当安全壳在进行打压试验完成后并对其壳内的试验气体进行排放时，气体能够通过安全壳自身的泄压系统和本辅助泄压装置同时进行排放，提高了泄压的速率，节省了泄压过程所需要花费的时间，进而使得安全壳内部能够更加迅速的降低压力，缩短安全壳打压试验工期。
The invention relates to an auxiliary pressure relief device, which is used for discharging gas in a containment shell of a nuclear power plant, which comprises a shunt pipeline and a pressure relief assembly. The shunt pipeline includes a mounting end and a connecting end. The mounting end is used for detachable connection and communication with the exhaust pipe of the containment; the intake end of the pressure relief assembly is connected and communicated with the connecting end, and the exhaust end of the pressure relief assembly is used for It is communicated with the external environment; wherein, at least part of the gas flowing through the exhaust pipe can flow to the pressure relief assembly along the branch pipe for discharge. When the containment is exhausted after the pressure test is completed, the gas can be discharged through the containment's own pressure relief system and the auxiliary pressure relief device at the same time, which improves the pressure relief rate and saves money. The time it takes for the pressure relief process to reduce the pressure inside the containment more quickly and shorten the duration of the containment pressure test.
Description
Technical Field
The invention relates to the technical field of nuclear power safety, in particular to an auxiliary pressure relief device.
Background
The containment vessel is a third safety barrier of the nuclear power station, and the containment vessel needs to be tested every decade after the containment vessel is built, is subjected to first refueling and overhaul and is subjected to commercial transportation, so that the structural strength and the sealing performance of the containment vessel under the working condition of a main circuit accident are tested. . The containment vessel pressurization test is to analyze and determine the total leakage rate and the leakage amount of the containment vessel under the design pressure by acquiring and measuring the change trend of gas parameters in the containment vessel along with time. After the test is completed, the test gas inside the containment vessel needs to be discharged to release the pressure inside the containment vessel. In the prior art, most of the gas in the containment is discharged through a pressure relief system of the containment, however, the pressure relief rate of the pressure relief system is low, the time spent in the pressure relief process is long, the overhaul period is long, and the economy of a nuclear power plant is affected.
Disclosure of Invention
On the basis, the auxiliary pressure relief device is provided for solving the technical problems that when the pressure of gas is relieved after a containment vessel compression test in the prior art, the pressure relief time is long due to the fact that the pressure relief rate is low, and the overall progress of overhaul of a unit is affected.
An auxiliary pressure relief device for venting gas within a containment of a nuclear power plant, the auxiliary pressure relief device comprising: the shunt pipeline comprises a mounting end and a connecting end, and the mounting end is detachably connected and communicated with the exhaust pipe of the containment; the air inlet end of the pressure relief assembly is connected and communicated with the connecting end, and the air outlet end of the pressure relief assembly is communicated with the external environment; at least part of gas flowing through the exhaust pipe can flow to the pressure relief assembly along the shunt pipeline to be discharged.
In one embodiment, the shunt pipe comprises a main pipe, and the installation end and the connection end are both communicated with the main pipe; the quantity of link is at least two, at least two the link is followed the length direction interval arrangement of house steward, every the link all corresponds and is connected with a set of pressure release subassembly.
In one embodiment, the shunt line comprises a multi-way valve and a plurality of connecting pipes; the multi-way valve has a plurality of through openings, wherein one of the through openings is used as the mounting end, the connecting pipes are selected to be connected with the rest of the through openings to be used as the connecting ends, and each connecting end is correspondingly connected with a group of pressure relief assemblies.
In one embodiment, a branch pipe is connected to the exhaust pipe, and the installation end of the shunt pipeline is detachably connected with the branch pipe.
In one embodiment, one of the branch pipe and the mounting end is configured with a first connecting ring protruding radially outward, and the other of the branch pipe and the mounting end is configured with a second connecting ring protruding radially outward; the auxiliary pressure relief device further comprises a locking piece, and the locking piece penetrates through the first connecting ring and the second connecting ring to lock the first connecting ring and the second connecting ring; or the mounting end is provided with a threaded section, and the threaded section is in threaded connection with the branch pipe.
In one embodiment, the pressure relief assembly comprises an isolation valve and an exhaust fan; the isolation valve is connected to a pipeline, the connecting end of the pipeline is communicated with the air inlet end of the pressure relief assembly, and the isolation valve is used for controlling the on-off of the shunt pipeline and the pressure relief assembly; the exhaust fan is arranged on one side, facing the exhaust end of the pressure relief assembly, of the isolation valve; when the isolation valve is in an open state, gas flowing out of the shunt pipeline can be discharged to the external environment under the pressure difference between the inside and the outside of the containment vessel and the power action of the exhaust fan.
In one embodiment, the pressure relief assembly further comprises a filter unit, the filter unit being mounted between the isolation valve and the exhaust fan; when the isolating valve is in an open state, the gas flowing out of the shunt pipeline can be filtered by the filtering unit.
In one embodiment, the filtration unit comprises a first filter and a second filter; the first filter and the second filter are arranged at intervals along the discharge direction of the gas, and the first filter is arranged on one side close to the isolation valve; the first filter is used for filtering the gas for the first time, the second filter is used for filtering the gas for the second time, and the particle size of the particles filtered for the first time is larger than that of the particles filtered for the second time.
In one embodiment, the filter unit further comprises a radioactive element filter mounted to a side of the second filter facing away from the first filter; the radioactive element filter is used for filtering the radioactive elements in the gas subjected to the secondary filtration.
In one embodiment, the pressure relief assembly further comprises a radiation monitor installed between the radioactive element filter and the exhaust fan, the radiation monitor being configured to monitor the content of radioactive elements in the gas filtered by the radioactive element filter.
In one embodiment, the number of the pressure relief assemblies is at least two, and at least two pressure relief assemblies are connected in series, so that at least part of gas flowing through the exhaust pipe can flow along the shunt pipeline and flow through at least two pressure relief assemblies for being exhausted.
In one embodiment, the auxiliary pressure relief device further comprises a mounting shell, and the pressure relief assembly is accommodated in the mounting shell; the connecting end extends into the mounting shell to be connected with the air inlet end of the pressure relief assembly; or the air inlet end of the pressure relief assembly extends out of the mounting shell to be connected with the connecting end.
The invention has the beneficial effects that:
when the containment vessel is subjected to a pressure test and test gas in the containment vessel is discharged, the mounting end of the shunt pipeline of the auxiliary pressure relief device is connected and communicated with the exhaust pipe of the containment vessel, so that at least part of gas flowing through the exhaust pipe can flow to the pressure relief assembly along the shunt pipeline, and the exhaust end of the pressure relief assembly is communicated with the external environment, so that the part of gas can be discharged through the pressure relief assembly. Because gas can be discharged through the pressure relief system of the containment vessel and the auxiliary pressure relief device at the same time, the pressure relief speed is improved, the time spent in the pressure relief process is saved, the pressure in the containment vessel can be reduced more quickly, and the construction period of a containment vessel pressure test is shortened; meanwhile, after the compression test is finished, sufficient time is reserved for maintaining the containment; the overall process of overhaul of the unit is prevented from being influenced, and the economy of the nuclear power plant is improved. When the containment vessel is in a normal use process, and when a sudden serious accident working condition occurs to cause the abnormal condition of a pressure relief system of the containment vessel, the pressure of the containment vessel can be reduced through the auxiliary pressure relief device, so that the use process of the containment vessel is safer. After the auxiliary pressure relief of the containment vessel is completed, the shunt pipeline and the exhaust pipe are detached, so that the auxiliary pressure relief device can perform auxiliary pressure relief on different containment vessels, and the economic benefit is improved.
Drawings
Fig. 1 is a schematic view of an auxiliary pressure relief device according to a first embodiment of the present invention;
FIG. 2 is a schematic view of a pressure relief assembly of the auxiliary pressure relief device shown in FIG. 1;
fig. 3 is a schematic view of an auxiliary pressure relief device according to a second embodiment of the present invention.
Reference numerals: 100-a pressure relief assembly; 110-an isolation valve; 120-a flow regulating valve; 130-a hygrometer; 140-a heater; 150-a flow meter; 160-a filtration unit; 161-a first filter; 162-a second filter; 163-radioactive element filter; 170-a radiation monitor; 180-exhaust fan; 200-an exhaust pipe; 300-external environment; 400-mounting the housing.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.
Referring to fig. 1 to 3, fig. 1 is a schematic diagram illustrating an auxiliary pressure relief device according to a first embodiment of the present invention;
FIG. 2 illustrates a schematic view of the pressure relief assembly 100 of the auxiliary pressure relief device shown in FIG. 1; fig. 3 shows a schematic diagram of an auxiliary pressure relief device provided by a second embodiment of the present invention. The auxiliary pressure relief device provided by the embodiment of the invention is used for discharging gas in a containment vessel of a nuclear power plant and comprises a shunt pipeline and a pressure relief assembly 100. The shunt pipeline comprises a mounting end and a connecting end, and the mounting end is detachably connected and communicated with the exhaust pipe 200 of the containment; the air inlet end of the pressure relief assembly 100 is connected and communicated with the connecting end, and the air outlet end of the pressure relief assembly 100 is used for being communicated with the external environment 300; at least a portion of the gas flowing through the exhaust pipe 200 can flow along the shunt line to the pressure relief assembly 100 for being exhausted.
When the containment vessel is subjected to a pressurization test and test gas in the containment vessel is discharged, the mounting end of the shunt pipeline of the auxiliary pressure relief device is connected and communicated with the exhaust pipe 200 of the containment vessel, so that at least part of gas flowing through the exhaust pipe 200 can flow to the pressure relief assembly 100 along the shunt pipeline, and the exhaust end of the pressure relief assembly 100 is communicated with the external environment 300, so that the part of gas can be discharged through the pressure relief assembly 100. Because gas can be discharged through the pressure relief system of the containment vessel and the auxiliary pressure relief device at the same time, the pressure relief speed is improved, the time spent in the pressure relief process is saved, the pressure in the containment vessel can be reduced more quickly, and the construction period of a containment vessel pressure test is shortened; meanwhile, after the compression test is finished, sufficient time is reserved for maintaining the containment; the overall process of overhaul of the unit is prevented from being influenced, and the economy of the nuclear power plant is improved. When the containment vessel is in a normal use process, and when a sudden serious accident working condition occurs to cause the abnormal condition of a pressure relief system of the containment vessel, the pressure of the containment vessel can be reduced through the auxiliary pressure relief device, so that the use process of the containment vessel is safer. After the auxiliary pressure relief of the containment vessel is completed, the shunt pipeline and the exhaust pipe 200 are detached, so that the auxiliary pressure relief device can perform auxiliary pressure relief on different containment vessels, and the economic benefit is improved.
It should be noted that, in one embodiment, the penetration piece for the containment pressurization test is pressurized, and the pressurizing pipeline is removed after the pressurization is finished. Because of ventilation system design reason, the pressure release rate of the pressure release system of present containment self is injectd at 140mbar/h, if improve pressure release rate, then need to reform transform the tuber pipe of its own whole pressure release system, isolation valve, and it is great to reform transform the engineering volume, and the expense is higher, and for the one time containment of cycle 10 years is suppressed the test, and the cost performance of reforming transform the system is lower. After the containment is suppressed and is tested, pass through the pipeline with this supplementary pressure relief device's reposition of redundant personnel pipeline's erection end with the penetration piece and be connected and communicate, the pressure release stage guarantees pressure release speed on 140 mbar/h's basis at system pressure release passageway, can further improve pressure release speed through this supplementary pressure relief device, therefore need not reform transform the tuber pipe of system, the isolating valve, the cost is lower, and can use a plurality of containment, realize the sharing of crowd's factory, reduce the expense of power plant, economic benefits is better.
When the auxiliary pressure relief device is actually used, the pressure relief speed is increased to 160mbar/h, and the pressure relief time can be shortened by 4 hours; when the pressure relief rate is increased to 200mbar/h, the pressure relief time can be shortened by 9 hours; when the pressure release rate is increased to 240mbar/h, the pressure release time can be shortened by 12.5 hours. Therefore, the auxiliary pressure relief device can greatly shorten the time required by the pressure relief process, so that the pressure in the containment can be reduced more quickly, and the construction period of the containment pressure test is shortened; meanwhile, after the compression test is finished, sufficient time is reserved for maintaining the containment.
In one specific embodiment, when a severe accident condition occurs during normal use of the nuclear power plant, if the internal pressure of the nuclear power plant rises and a pressure relief channel of a pressure relief system is abnormal, radioactive gas in the nuclear power plant may not be discharged through the pressure relief system of the containment vessel, and the pressure may not be reduced. At the moment, the safety shell can be discharged and decompressed through the auxiliary pressure relief device, so that the using process of the safety shell is safer.
The following is a detailed description of the structure of the auxiliary pressure relief device.
In one embodiment, the shunt pipeline comprises a main pipe, and the mounting end and the connecting end are both communicated with the main pipe; the quantity of link is at least two, and two at least links are arranged along house steward's length direction interval, and every link all corresponds and is connected with a set of pressure relief subassembly 100. Because the quantity of link is at least two, and every link all corresponds and is connected with a set of pressure relief subassembly 100, therefore can be according to the target pressure relief rate requirement of containment, come to select to connect the pressure relief subassembly 100 of different quantity through a plurality of links for the pressure relief rate of containment is controllable and faster, nimble and convenient. In one embodiment, the number of connection terminals is four, so that the present auxiliary pressure relief device can be connected to four sets of pressure relief assemblies 100 at the maximum. In other embodiments, the number of the connecting ends may also be two, three, five, six, seven, or the like, which is not limited to this, and may be adaptively adjusted according to the maximum pressure relief rate required by the containment.
In one embodiment, the shunt line comprises a multi-way valve and a plurality of nipples; the multi-way valve has a plurality of ports, and one of them port is as the installation end, and a plurality of takeovers one is connected in surplus port in order as the link, and every link all corresponds and is connected with a set of pressure relief subassembly 100. A plurality of openings through the multi-way valve come installation end and a plurality of link as the reposition of redundant personnel pipeline for the structure of whole reposition of redundant personnel pipeline is comparatively simple. In one specific embodiment, the multi-way valve has five ports, one of which is a mounting end and the remaining four of which are connection ends. Thus, up to four sets of pressure relief assemblies 100 may be connected. In other embodiments, the number of the ports of the multi-way valve may also be three, four, or six, seven, etc., which is not limited to this, and may be adaptively adjusted according to the maximum pressure relief rate required by the containment.
In one embodiment, a branch pipe is connected to the exhaust pipe 200, and the installation end of the branch pipe is detachably connected to the branch pipe. By connecting the branch pipes to the exhaust pipe 200, the installation ends of the branch pipes are detachably connected to the branch pipes. This allows the bypass line to communicate with exhaust pipe 200 and bypass the gas in exhaust pipe 200.
In one embodiment, the exhaust pipe 200 is provided with a connecting hole at a side wall thereof for communicating with a pipeline, and an installation end of the diversion pipeline is detachably connected to a hole wall of the connecting hole, so that the diversion pipeline is communicated with the exhaust pipe 200 and diverts and exhausts the gas in the exhaust pipe 200.
In one embodiment, one of the branch pipe and the mounting end is configured with a first connecting ring protruding radially outwards, and the other of the branch pipe and the mounting end is configured with a second connecting ring protruding radially outwards; the auxiliary pressure relief device further comprises a locking member, and the locking member penetrates through the first connecting ring and the second connecting ring to lock the first connecting ring and the second connecting ring. Wear to establish first go-between and second go-between through the retaining member for first go-between and second go-between realize locking, and then make branch pipe and installation end realize connecting, and after supplementary pressure release operation is accomplished, then with retaining member and first go-between and second go-between detach can, the operation is comparatively simple and convenient.
In one specific embodiment, the locking member is a threaded connecting member and a nut, one of the first connecting ring and the second connecting rod is provided with a threaded hole, and the first connecting ring and the second connecting ring are locked by means of the threaded connecting member and the nut in a matching manner. In another specific embodiment, the locking member is a rivet, and the rivet is inserted through the connecting holes of the first and second connecting rings to be riveted, thereby achieving locking of the first and second connecting rings.
In some of these embodiments, the mounting end has a threaded section that is threadably connected to the branch pipe. Through directly constructing the screw thread section on installation end and branch pipe for threaded connection is realized with the branch pipe to the installation end, and then realizes being connected comparatively simple and convenient dismantling of installation end and branch pipe. When the auxiliary pressure relief operation is required to be carried out on the containment vessel through the auxiliary pressure relief device, the auxiliary pressure relief device is screwed with the branch pipe through screwing the mounting end. And after the auxiliary pressure relief operation is finished, the mounting end is screwed in the opposite direction, so that the mounting end is separated from the branch pipe, and the operation is simple and convenient.
Referring to fig. 2, a pressure relief assembly 100 of an auxiliary pressure relief device according to an embodiment of the present invention includes a pipe, an isolation valve 110, and an exhaust fan 180. The pipeline is used for installing the installation part of the whole pressure relief assembly 100, the isolation valve 110 is connected to the pipeline of the pipeline with the connecting end communicated with the air inlet end of the pressure relief assembly 100, and the isolation valve 110 is used for controlling the on-off of the shunt pipeline and the pressure relief assembly 100; the exhaust fan 180 is installed on a pipe of one side of the isolation valve 110 facing the exhaust end of the pressure relief assembly 100, and when the isolation valve 110 is in an open state, gas flowing out through the shunt pipe can be exhausted to the external environment 300 under the pressure difference inside and outside the containment and the power of the exhaust fan 180.
The on-off of the shunt pipeline and the pressure relief assembly 100 is controlled through the isolation valve 110, so that the whole auxiliary pressure relief device can be safer, and when the auxiliary pressure relief device has a problem in the process of performing auxiliary pressure relief on the containment and needs emergency stop operation, the isolation valve 110 only needs to be closed at the moment. The exhaust fan 180 provides power to exhaust the gas introduced into the pressure relief assembly 100 into the external environment 300, so that the gas can be exhausted more quickly, the pressure relief rate is increased, and the time spent in the pressure relief process is shortened.
Referring to fig. 2, the pressure relief assembly 100 of the auxiliary pressure relief device according to an embodiment of the present invention further includes a flow control valve 120, the flow control valve 120 is installed on a pipe on a side of the isolation valve 110 away from the exhaust pipe 200, and the flow control valve 120 can adjust a flow rate of the gas entering the pipe of the pressure relief assembly 100, so that an exhaust rate of the gas during an exhaust process is controllable.
Referring to fig. 2, the auxiliary pressure relief device according to an embodiment of the present invention further includes a filter unit 160, the filter unit 160 is installed on a pipe between the isolation valve 110 and the exhaust fan 180, and when the isolation valve 110 is in an open state, gas flowing out through the bypass pipe can be filtered by the filter unit 160. The gas is filtered by the filtering unit 160, so that the gas discharged into the external environment 300 meets the discharge requirement, and is more environment-friendly.
Referring to fig. 2, a filter unit 160 of an auxiliary pressure relief device according to an embodiment of the present invention includes a first filter 161 and a second filter 162. The first filter 161 and the second filter 162 are disposed at intervals in the discharge direction of the gas, and the first filter 161 is disposed on the pipe at a side close to the isolation valve 110; the first filter 161 is used for filtering the gas once; the second filter 162 is used for secondary filtering of the gas, and the particle size of the primary filtered particles is larger than that of the secondary filtered particles. Through setting up first filter 161 and second filter 162, make the impurity in the gas can be filtered by abundant, the filter effect is better.
In one specific embodiment, the first filter 161 filters particles larger than 10 μm, and the second filter 162 filters particles between 0.01 μm and 10 μm, so that aerosol in the gas can be filtered. Of course, in other embodiments, the particle size of the particles filtered by the first filter 161 may be larger than 5 μm or 6 μm, and the particle size filtered by the second filter 162 may be 0.01 μm to 5 μm or 0.01 μm to 6 μm, which is not limited to this, and may be adaptively adjusted according to the specifications of the filter elements of the first filter 161 and the second filter 162.
In one specific embodiment, the first filter 161 is a pre-filter, which may be a sieve or the like, and filters out impurities with larger particle sizes in the gas through the sieve. It should be noted that the mesh number of the sieve is not limited, and it may be modified adaptively according to the size of the particle diameter of the particles in the gas. In particular, the prefilter is made of glass fibers.
In one specific embodiment, the second filter 162 is a high efficiency filter, which may be filter paper or the like, and filters out impurities with small particle size in the gas through the filter paper, and can remove the odor of the gas. It should be noted that the pore size of the filter paper is not limited, and may be modified adaptively according to the size of the particle size of the particles in the gas.
Referring to fig. 2, the filtering unit 160 of the auxiliary pressure relief device according to an embodiment of the present invention further includes a radioactive element filter 163, and the radioactive element filter 163 is configured to filter and adsorb radioactive elements in the gas. The radioactive elements in the gas are filtered by the radioactive element filter 163 so that the gas finally discharged into the external environment 300 meets the discharge requirement.
In one embodiment, the radioactive element filter 163 is an iodine filter, and the radioactive element iodine in the gas is adsorbed by the iodine filter, so that the content of iodine in the gas discharged to the external environment 300 meets the discharge requirement. Since the containment vessel contains a large amount of radioactive gas, such as iodine, carbon 14, tritium, or the like, all the radioactive elements in the containment vessel gas can be adsorbed by the radioactive element filter 163, so as to meet the emission requirement.
Referring to fig. 2, the pressure relief assembly 100 of the auxiliary pressure relief device according to an embodiment of the present invention further includes a flow meter 150, the flow meter 150 is installed on a pipeline between the flow regulating valve 120 and the filter unit 160, and the flow meter 150 determines the flow rate of the gas flowing into the pipeline of the pressure relief assembly 100, so as to adjust the opening and closing states of the flow regulating valve 120.
Referring to fig. 2, the pressure relief assembly 100 of the auxiliary pressure relief device according to an embodiment of the present invention further includes a hygrometer 130 and a heater 140, wherein the hygrometer 130 and the heater 140 are installed on a pipe between the isolation valve 110 and the filter unit 160. The humidity of the gas is monitored by the hygrometer 130, and then the gas is heated by the heater 140, so that the humidity of the gas can meet the filtering requirement of the iodine filter. In one specific embodiment, the number of the hygrometers 130 is two, the two hygrometers 130 are respectively arranged on two sides of the heater 140, and the dehumidification effect of the heater 140 on the gas can be further determined through the display values of the two hygrometers 130.
Referring to fig. 2, the pressure relief assembly 100 of the auxiliary pressure relief device according to an embodiment of the present invention further includes a radiation monitor, the radiation monitor is installed on a pipeline between the radioactive element filter 163 and the exhaust fan 180, and the radiation monitor is used for monitoring the content of radioactive elements in the gas filtered by the radioactive element filter 163. The gas filtered by the radioactive element filter 163 is monitored for the content of the radioactive element by the radiation detector, and whether the gas meets the emission requirement is judged according to the monitoring result, so that the emission of the gas is more environment-friendly and safer.
Referring to fig. 2, in one embodiment, the number of the radiation monitors 170 is two, wherein one radiation monitor 170 is installed on the pipeline between the flow control valve 120 and the filter unit 160, and the other radiation monitor 170 is installed on the pipeline between the radioactive element filter 163 and the exhaust fan 180. The content of radioactive elements in the gas which enters the pipeline of the pressure relief assembly 100 and is not filtered is monitored by the first radiation monitor 170, the content of the radioactive elements in the gas which is filtered by the filtering unit 160 is monitored by the second radiation monitor 170, the filtering effect of the filtering unit 160 on the radioactive elements is determined by comparing the two monitoring data, and then the filtering unit 160 is correspondingly improved.
Referring to fig. 3, in the pressure relief device according to the second embodiment of the present invention, the number of the pressure relief assemblies 100 is at least two, and at least two pressure relief assemblies 100 are connected in series, so that at least a portion of the gas flowing through the exhaust pipe 200 can flow along the branch line and flow through at least two pressure relief assemblies 100 for being exhausted. Through with two at least pressure release subassembly 100 series connection for the gas that flows through blast pipe 200 can filter through a plurality of pressure release subassembly 100, and then makes the final filter effect of flowing to external environment 300's gas better, makes gaseous emission environmental protection safety more.
In one specific embodiment, the number of the pressure relief assemblies 100 is two, and the two pressure relief assemblies 100 are connected in series, so that the gas flowing through the exhaust pipe 200 can be filtered through the two pressure relief assemblies 100, and a double-filtering effect is achieved. Of course, in other embodiments, the pressure relief assembly 100 may also be three or four in series, etc. to perform triple filtration or quadruple filtration on the gas, which is not limited to this, and may be adaptively configured according to the content of the particles and the content of the radioactive elements in the gas, so as to meet the emission requirement of the gas.
It should be noted that, by the auxiliary pressure relief device, the pressure relief assemblies 100 can be connected in parallel, so that the pressure relief speed is high, and the time spent in the pressure relief process is saved; the pressure relief assemblies 100 can be connected in series, so that the filtering effect on gas is good, and the gas is discharged more environmentally friendly and safer.
Referring to fig. 1, an auxiliary pressure relief device of an auxiliary pressure relief device according to an embodiment of the present invention further includes a mounting case 400, and the pressure relief assembly 100 is accommodated in the mounting case 400. In one embodiment, the connection end extends into the mounting case 400 to connect with the inlet end of the pressure relief assembly 100. In another embodiment, the inlet end of the pressure relief assembly 100 extends out of the mounting case 400 to connect with the connection end. Through setting up installation shell 400 for in pressure relief component 100 can hold and locate installation shell 400, and then make whole pressure relief component 100 can be integrated in installation shell 400, pressure relief component 100 receives the protection of installation shell 400, and difficult emergence collision damage, and easily transport.
In one embodiment, the mounting case 400 can move, so that the pressure relief assembly 100 contained in the mounting case 400 can also move under the driving of the mounting case 400. Through installing pressure relief subassembly 100 in mobilizable installation shell 400 for this supplementary pressure relief device can realize removing and transporting, and then can realize crowd's factory sharing, has reduced the expense of power plant, has better economic benefits. In one specific embodiment, the mounting case 400 is a shipping container, and the pressure relief assembly 100 is integrated into the shipping container for ease of transportation. Specifically, the bottom of the mounting case 400 is provided with a roller, and the roller rolls around its own axis to drive the whole mounting case 400 to move.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (11)
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Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102568621A (en) * | 2012-02-27 | 2012-07-11 | 清华大学 | Primary circuit inclusion body negative pressure exhaust method and system for pebble-bed modular high-temperature gas-cooled reactor |
| CN103081022A (en) * | 2010-08-25 | 2013-05-01 | 阿海珐Np有限公司 | Method for depressurizing a nuclear power plant, depressurization system for a nuclear power plant, and associated nuclear power plant |
| CN103871495A (en) * | 2014-03-07 | 2014-06-18 | 长江勘测规划设计研究有限责任公司 | Containment pressure relieving system of underground nuclear power station in serious accidents |
| WO2014184296A1 (en) * | 2013-05-17 | 2014-11-20 | Areva Gmbh | Pressure-relief and activity-restraint system for a nuclear plant |
| CN105190770A (en) * | 2013-04-25 | 2015-12-23 | 阿海珐有限公司 | Emission monitoring system for the exhaust system of a nuclear power plant |
| CN105513654A (en) * | 2016-01-18 | 2016-04-20 | 中国工程物理研究院材料研究所 | Device for rapidly measuring hydrogen at plurality of points after containment accident of nuclear power plant and realization method of device |
| CN206787941U (en) * | 2017-06-20 | 2017-12-22 | 山东电力建设第三工程公司 | A kind of pipe-line system pressure testing device |
| CN108022659A (en) * | 2017-12-06 | 2018-05-11 | 哈尔滨工程大学 | A Containment Filtration Emission System for Efficient Removal of Organic Iodine |
| CN208137922U (en) * | 2018-07-16 | 2018-11-23 | 延安瑞泽油田工程技术服务有限公司 | The closed pressure release injection allocation apparatus of integral type environmental protection |
| CN212039681U (en) * | 2020-04-30 | 2020-12-01 | 郑州拓洋生物工程有限公司 | Fermentation cylinder exhaust treatment system |
| CN112066256A (en) * | 2020-09-18 | 2020-12-11 | 中国能源建设集团浙江省电力设计院有限公司 | Natural gas pressure regulating station system with protection device |
| CN113921152A (en) * | 2021-09-27 | 2022-01-11 | 中国船舶重工集团公司第七一九研究所 | Containment pressure relief and exhaust activity monitoring system |
-
2022
- 2022-07-12 CN CN202210814441.XA patent/CN115013731B/en active Active
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103081022A (en) * | 2010-08-25 | 2013-05-01 | 阿海珐Np有限公司 | Method for depressurizing a nuclear power plant, depressurization system for a nuclear power plant, and associated nuclear power plant |
| CN102568621A (en) * | 2012-02-27 | 2012-07-11 | 清华大学 | Primary circuit inclusion body negative pressure exhaust method and system for pebble-bed modular high-temperature gas-cooled reactor |
| CN105190770A (en) * | 2013-04-25 | 2015-12-23 | 阿海珐有限公司 | Emission monitoring system for the exhaust system of a nuclear power plant |
| WO2014184296A1 (en) * | 2013-05-17 | 2014-11-20 | Areva Gmbh | Pressure-relief and activity-restraint system for a nuclear plant |
| CN103871495A (en) * | 2014-03-07 | 2014-06-18 | 长江勘测规划设计研究有限责任公司 | Containment pressure relieving system of underground nuclear power station in serious accidents |
| CN105513654A (en) * | 2016-01-18 | 2016-04-20 | 中国工程物理研究院材料研究所 | Device for rapidly measuring hydrogen at plurality of points after containment accident of nuclear power plant and realization method of device |
| CN206787941U (en) * | 2017-06-20 | 2017-12-22 | 山东电力建设第三工程公司 | A kind of pipe-line system pressure testing device |
| CN108022659A (en) * | 2017-12-06 | 2018-05-11 | 哈尔滨工程大学 | A Containment Filtration Emission System for Efficient Removal of Organic Iodine |
| CN208137922U (en) * | 2018-07-16 | 2018-11-23 | 延安瑞泽油田工程技术服务有限公司 | The closed pressure release injection allocation apparatus of integral type environmental protection |
| CN212039681U (en) * | 2020-04-30 | 2020-12-01 | 郑州拓洋生物工程有限公司 | Fermentation cylinder exhaust treatment system |
| CN112066256A (en) * | 2020-09-18 | 2020-12-11 | 中国能源建设集团浙江省电力设计院有限公司 | Natural gas pressure regulating station system with protection device |
| CN113921152A (en) * | 2021-09-27 | 2022-01-11 | 中国船舶重工集团公司第七一九研究所 | Containment pressure relief and exhaust activity monitoring system |
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| CN115013731B (en) | 2025-10-28 |
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