Nuclear power plant radioactive exhaust measurement cabinet

Abstract

The utility model discloses a nuclear power plant radioactive waste gas measuring cabinet, it includes cabinet body, side edge shock attenuation support subassembly, bottom shock attenuation support subassembly and gas measurement sampling subassembly. This nuclear power plant radioactive waste gas measuring cabinet is through the side edge shock attenuation support subassembly and bottom shock attenuation support subassembly of distribution setting, when the cabinet body inclines and swings, can slow down and absorb the impact force from the displacement of longitudinal, transverse and oblique direction, thereby guaranteeing the normal operation of cabinet body and internal components, to reach the effect of preventing inclination swing, maintaining normal operation of device. And through setting nitrogen gas purging pipeline, tee, sample gas inlet pipeline, sample gas inlet pipeline, sample gas outlet pipeline and gas sensor, can realize radioactive gas on -line real -time sampling function, avoid the irradiation risk that personnel and radioactive material contact bring, also realized nitrogen gas purging function, avoid the explosion risk that the higher concentration of flammable and explosive gas of airtight pipeline produces.

Description

Technical Field

[0001] This utility model relates to the field of radioactive waste gas measurement technology, and in particular to a radioactive waste gas measurement cabinet for nuclear power plants. Background Technology

[0002] Nuclear power plant radioactive waste gas treatment systems and upstream systems contain large amounts of radioactive waste gas, which may include significant quantities of flammable and explosive gases, such as hydrogen-oxygen mixtures. Monitoring gas concentrations in the system relies on sampling and analysis by operating personnel, posing a risk of radiation exposure from contact with radioactive materials. Furthermore, safety purging is required before measuring flammable and explosive gases to avoid the risk of explosion from high concentrations of these gases in confined spaces. Measurement cabinets, which are protective enclosures for electrical or electronic equipment mounted on the platform, are typically used to house electronic components. However, general measurement cabinets are ill-suited for complex application environments, such as continuous vibrations during platform movement, and severe shaking and impacts, especially under adverse weather conditions. This necessitates that the cabinet and its mounting structure possess sufficient strength and vibration damping capabilities. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a nuclear power plant radioactive waste gas measuring cabinet.

[0004] The technical solution adopted by this utility model to solve its technical problem is: to construct a nuclear power plant radioactive waste gas measuring cabinet, which includes a cabinet body, a side shock-absorbing support assembly, a bottom shock-absorbing support assembly, and a gas measuring and sampling assembly.

[0005] The side shock-absorbing support assembly is installed on the side of the cabinet body, and the bottom shock-absorbing support assembly is installed on the bottom of the cabinet body;

[0006] The gas measurement and sampling assembly includes a nitrogen purging line, a tee, a sample gas inlet line, a sample gas outlet line, and a gas sensor. The three ends of the tee are respectively connected to the nitrogen purging line, the sample gas inlet line, and the sample gas outlet line. One end of the sample gas outlet line is connected to the inlet end of the gas sensor, and one end of the sample gas outlet line is connected to the outlet end of the gas sensor.

[0007] In some embodiments, the side vibration damping support assembly includes a side vibration damping fixing block connected to the side wall of the cabinet body, a side elastic member connected to the side vibration damping fixing block, and a side vibration damping mounting plate connected to the side elastic member.

[0008] In some embodiments, the bottom shock-absorbing support assembly includes a bottom shock-absorbing fixing block connected to the bottom of the cabinet body, a bottom elastic element connected to the bottom shock-absorbing fixing block, and a bottom shock-absorbing mounting plate connected to the bottom elastic element.

[0009] In some embodiments, the nuclear power plant radioactive waste gas measurement cabinet further includes a sampling pump, which is connected to both the sample gas inlet pipeline and the sample gas outlet pipeline.

[0010] In some embodiments, the nitrogen purging line is provided with a nitrogen purging control valve, the sample gas inlet line is provided with a sample gas inlet control valve, and the sample gas outlet line is provided with a sample gas outlet control valve.

[0011] In some embodiments, the cabinet body is provided with a nitrogen purging sleeve interface, a sample gas inlet sleeve interface, and a sample gas outlet sleeve interface. The nitrogen purging pipeline is connected to the nitrogen purging sleeve interface, the sample gas inlet pipeline is connected to the sample gas inlet sleeve interface, and the sample gas outlet pipeline is connected to the sample gas outlet sleeve interface.

[0012] In some embodiments, the cabinet body is provided with a cable interface.

[0013] In some embodiments, the nuclear power plant radioactive waste gas measurement cabinet includes a signal output module and a power supply module, wherein the signal output module is electrically connected to the power supply module and the gas sensor.

[0014] In some embodiments, the nuclear power plant radioactive waste gas measurement cabinet further includes a door connected to the cabinet body, and the door and the cabinet body, as well as the joints of the cabinet body, are sealed with sealing strips.

[0015] In some embodiments, the cabinet body is made of metal and has an outer radiation-resistant layer.

[0016] The present invention offers the following advantages: The nuclear power plant radioactive waste gas measurement cabinet, through its distributed side and bottom shock-absorbing support components, mitigates and absorbs some of the impact forces from longitudinal, lateral, and diagonal displacements when the cabinet body tilts or sways. This ensures the normal operation of the cabinet body and its internal components, achieving the effect of preventing tilting and swaying and maintaining normal device operation. Furthermore, by incorporating nitrogen purging lines, tees, sample gas inlet lines, sample gas outlet lines, and gas sensors, the measurement cabinet enables real-time online sampling of radioactive gases, avoiding the radiation risk from personnel contact with radioactive materials. It also achieves nitrogen purging, preventing the risk of explosion from high concentrations of flammable and explosive gases in closed pipelines. Attached Figure Description

[0017] To more clearly illustrate the technical solution of this utility model, the present utility model will be further described below in conjunction with the accompanying drawings and embodiments. It should be understood that the following drawings only show some embodiments of this utility model and should not be considered as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort. In the drawings:

[0018] Figure 1 This is a schematic diagram of the internal structure of the cabinet body in some embodiments of this utility model;

[0019] Figure 2 This is a structural front view of a nuclear power plant radioactive waste gas measuring cabinet in some embodiments of this utility model;

[0020] Figure 3 This is a structural side view of a nuclear power plant radioactive waste gas measuring cabinet in some embodiments of this utility model. Detailed Implementation

[0021] To provide a clearer understanding of the technical features, objectives, and effects of this utility model, the specific embodiments of this utility model are now described in detail with reference to the accompanying drawings. In the following description, it should be understood that the orientations or positional relationships indicated by terms such as "front," "rear," "upper," "lower," "left," "right," "longitudinal," "horizontal," "vertical," "horizontal," "top," "bottom," "inner," "outer," "head," and "tail" are based on the orientations or positional relationships shown in the accompanying drawings, and are constructed and operated in a specific orientation. They are only for the convenience of describing this technical solution and do not indicate that the device or component referred to must have a specific orientation; therefore, they should not be construed as limitations on this utility model.

[0022] It should also be noted that, unless otherwise explicitly specified and limited, terms such as "installation," "connection," "joining," "fixing," and "setting" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. When an component is referred to as being "on" or "below" another component, the component can be located "directly" or "indirectly" on the other component, or there may be one or more intermediary components. The terms "first," "second," "third," etc., are only for the convenience of describing this technical solution and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, features defined with "first," "second," "third," etc., may explicitly or implicitly include one or more of that feature. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0023] Please see Figures 1 to 3 This invention relates to a nuclear power plant radioactive waste gas measurement cabinet in some embodiments, comprising a cabinet body 1, a side shock-absorbing support assembly 2, a bottom shock-absorbing support assembly 3, and a gas measurement and sampling assembly 4. The side shock-absorbing support assembly 2 is installed on the side of the cabinet body 1, and the bottom shock-absorbing support assembly 3 is installed on the bottom of the cabinet body 1. The gas measurement and sampling assembly 4 includes a nitrogen purge line 41, a tee 42, a sample gas inlet line 43, a sample gas inlet line 44, a sample gas outlet line 45, and a gas sensor 46. The three ends of the tee 42 are respectively connected to the nitrogen purge line 41, the sample gas inlet line 43, and the sample gas inlet line 44. One end of the sample gas inlet line 44 is connected to the inlet end of the gas sensor 46, and one end of the sample gas outlet line 45 is connected to the outlet end of the gas sensor 46.

[0024] Understandably, the radioactive waste gas measurement cabinet of this nuclear power plant, through its distributed side shock-absorbing support components 2 and bottom shock-absorbing support components 3, can mitigate and absorb some of the impact forces from longitudinal, lateral, and oblique displacements when the cabinet body 1 tilts or sways. This ensures the normal operation of the cabinet body 1 and its internal components, achieving the effect of preventing tilting and swaying and maintaining the normal operation of the device. Furthermore, by setting up nitrogen purging lines 41, tees 42, sample gas inlet lines 43, sample gas outlet lines 44, sample gas outlet lines 45, and gas sensors 46, the measurement cabinet can achieve online real-time sampling of radioactive gases, avoiding the radiation risk from personnel contact with radioactive materials. It also achieves nitrogen purging, preventing the risk of explosion caused by high concentrations of flammable and explosive gases in closed pipelines.

[0025] Specifically, the side vibration damping support assembly 2 includes a side vibration damping fixing block 21 connected to the side wall of the cabinet body 1, a side elastic element 22 connected to the side vibration damping fixing block 21, and a side vibration damping mounting plate 23 connected to the side elastic element 22. The side vibration damping mounting plate 23 can be installed on the wall. The side wall of the cabinet body 1 and the side vibration damping fixing block 21, and the side vibration damping mounting plate 23 and the wall, can be fixed by welding, bolts, rivets, or other connection methods. The side elastic element 22 is a spring.

[0026] The bottom shock-absorbing support assembly 3 includes a bottom shock-absorbing fixing block 31 connected to the bottom of the cabinet body 1, a bottom elastic element 32 connected to the bottom shock-absorbing fixing block 31, and a bottom shock-absorbing mounting plate 33 connected to the bottom elastic element 32. The bottom shock-absorbing mounting plate 33 can be installed on the ground. The bottom of the cabinet body 1 and the bottom shock-absorbing fixing block 31, and the bottom shock-absorbing mounting plate 33 and the ground can be fixed by welding, bolts, rivets, or other connection methods. The bottom elastic element 32 is a spring.

[0027] The nuclear power plant radioactive waste gas measurement cabinet also includes a sampling pump 5, which is connected to both the sample gas inlet pipeline 44 and the sample gas outlet pipeline 45. The sampling pump 5 provides power for the entry and exit of the gas.

[0028] Furthermore, a nitrogen purging control valve 411 is provided on the nitrogen purging line 41, a sample gas inlet control valve 431 is provided on the sample gas inlet line 43, and a sample gas outlet control valve 451 is provided on the sample gas outlet line 45. All of the above control valves can control the opening and closing of the gas flow on the corresponding lines.

[0029] The cabinet body 1 is equipped with a nitrogen purging ferrule interface 11, a sample gas inlet ferrule interface 12, and a sample gas outlet ferrule interface 13. A nitrogen purging line 41 is connected to the nitrogen purging ferrule interface 11, a sample gas inlet line 43 is connected to the sample gas inlet ferrule interface 12, and a sample gas outlet line 45 is connected to the sample gas outlet ferrule interface 13. In this embodiment, the nitrogen purging ferrule interface 11, the sample gas inlet ferrule interface 12, and the sample gas outlet ferrule interface 13 are all located at the bottom of the cabinet body 1. The nitrogen purging line 41, the tee 42, the sample gas inlet line 43, the sample gas inlet line 44, the sample gas outlet line 45, and the gas sensor 46 are all located inside the cabinet body 1. The internal piping of the cabinet body 1 is secured using a dedicated pipe fixing clamp device to ensure tightness and adaptability to vibration and swaying environments.

[0030] The specific working principle of the radioactive waste gas measurement cabinet of the nuclear power plant is as follows: before sampling, the sample gas inlet pipeline 44 and the sample gas outlet pipeline 45 are purged. First, the sample gas inlet control valve 431 is kept closed, while the nitrogen purging control valve 411 and the sample gas outlet control valve 451 are opened. Nitrogen gas enters the nitrogen purging pipeline 41 inside the cabinet body 1 through the nitrogen purging sleeve interface 11, passes through the sample gas inlet pipeline 44 and the gas sensor 46, and is discharged from the sample gas outlet pipeline 45 and the sample gas outlet sleeve interface 13 to avoid the risk of explosion.

[0031] During normal sampling operation, the sample gas inlet control valve 431 and the sample gas outlet control valve 451 are kept open, while the nitrogen purging control valve 411 is closed. The sample gas enters the sample gas inlet pipeline 43 and the sample gas inlet pipeline 44 in the cabinet through the sample gas inlet ferrule interface 12. Powered by the sampling pump 5, the sample gas flows through the gas sensor 46 to test the content of flammable and explosive gases. Subsequently, it flows out of the cabinet body 1 through the sample gas outlet pipeline 45 and the sample gas outlet ferrule interface 13.

[0032] The cabinet body 1 is equipped with a cable interface 14, which is located at the bottom of the cabinet body 1 and is sealed to the outside of the incoming cable.

[0033] The radioactive waste gas measurement cabinet for nuclear power plants includes a signal output module 6 and a power supply module 7. The signal output module 6, power supply module 7, and gas sensor 46 are all electrically connected. The signal output module 6 can output the measurement signal from the gas sensor 46, and the power supply module 7 can supply power to the electrical components of the cabinet body 1.

[0034] The radioactive waste gas measurement cabinet for nuclear power plants also includes a door 8 connected to the cabinet body 1. Sealing strips are used to seal the gaps between the door 8 and the cabinet body 1, as well as between the joints of the cabinet body 1. Understandably, high humidity and salt content in the ambient air can easily lead to corrosion, performance degradation, and short circuits in circuit boards or electronic components. Therefore, in this embodiment, sealing strips are used to seal the gaps between the door 8 and the cabinet body 1, as well as between the joints of the cabinet body 1. These sealing strips can be high-strength sealing strips. By using high-strength sealing strips at the joints and door 8, the salt spray resistance is improved.

[0035] The cabinet body 1 is made of metal, and its outer layer is equipped with a radiation-resistant layer. Understandably, when communication equipment used on the platform generates strong electromagnetic fields, this poses a potential threat to sensitive electronic equipment. The measurement cabinet should provide good electromagnetic shielding to protect the internal equipment from interference. Therefore, the material chosen for the cabinet body 1 is a composite material consisting of a metal shell and a radiation-resistant layer, such as lead or concrete, which has good resistance to radiation. This reduces the impact of radiation on the internal systems of the cabinet body 1 and minimizes electromagnetic interference.

[0036] It is understood that the above embodiments only illustrate preferred embodiments of the present utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the present utility model patent. 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 utility model, all of which fall within the protection scope of the present utility model. Therefore, all equivalent transformations and modifications made within the scope of the claims of the present utility model should fall within the coverage of the claims of the present utility model.

Claims

1. A nuclear power plant gaseous effluent measuring cabinet, characterized in that, It includes the cabinet body (1), the side shock-absorbing support assembly (2), the bottom shock-absorbing support assembly (3), and the gas measurement and sampling assembly (4); The side shock-absorbing support assembly (2) is installed on the side of the cabinet body (1), and the bottom shock-absorbing support assembly (3) is installed on the bottom of the cabinet body (1); The gas measurement and sampling assembly (4) includes a nitrogen purging line (41), a tee (42), a sample gas inlet line (43), a sample gas inlet line (44), a sample gas outlet line (45), and a gas sensor (46). The three ends of the tee (42) are respectively connected to the nitrogen purging line (41), the sample gas inlet line (43), and the sample gas inlet line (44). One end of the sample gas inlet line (44) is connected to the inlet end of the gas sensor (46), and one end of the sample gas outlet line (45) is connected to the outlet end of the gas sensor (46).

2. The nuclear power plant radioactive waste gas measuring cabinet according to claim 1, characterized in that, The side shock absorption support assembly (2) includes a side shock absorption fixing block (21) connected to the side wall of the cabinet body (1), a side elastic element (22) connected to the side shock absorption fixing block (21), and a side shock absorption mounting plate (23) connected to the side elastic element (22).

3. The nuclear power plant radioactive waste gas measuring cabinet according to claim 1, characterized in that, The bottom shock absorption support assembly (3) includes a bottom shock absorption fixing block (31) connected to the bottom of the cabinet body (1), a bottom elastic element (32) connected to the bottom shock absorption fixing block (31), and a bottom shock absorption mounting plate (33) connected to the bottom elastic element (32).

4. The nuclear power plant radioactive waste gas measuring cabinet according to claim 1, characterized in that, The nuclear power plant radioactive waste gas measurement cabinet also includes a sampling pump (5), which is connected to both the sample gas inlet pipeline (44) and the sample gas outlet pipeline (45).

5. The nuclear power plant radioactive waste gas measuring cabinet according to claim 1, characterized in that, The nitrogen purging line (41) is equipped with a nitrogen purging control valve (411), the sample gas inlet line (43) is equipped with a sample gas inlet control valve (431), and the sample gas outlet line (45) is equipped with a sample gas outlet control valve (451).

6. The nuclear power plant radioactive waste gas measuring cabinet according to claim 1, characterized in that, The cabinet body (1) is provided with a nitrogen purging sleeve interface (11), a sample gas inlet sleeve interface (12) and a sample gas outlet sleeve interface (13). The nitrogen purging pipeline (41) is connected to the nitrogen purging sleeve interface (11), the sample gas inlet pipeline (43) is connected to the sample gas inlet sleeve interface (12), and the sample gas outlet pipeline (45) is connected to the sample gas outlet sleeve interface (13).

7. The nuclear power plant radioactive waste gas measuring cabinet according to claim 1, characterized in that, The cabinet body (1) is equipped with a cable interface (14).

8. The nuclear power plant radioactive waste gas measuring cabinet according to claim 1, characterized in that, The nuclear power plant radioactive waste gas measurement cabinet includes a signal output module (6) and a power supply module (7). The signal output module (6) is electrically connected to the power supply module (7) and the gas sensor (46).

9. The nuclear power plant radioactive waste gas measuring cabinet according to claim 1, characterized in that, The nuclear power plant radioactive waste gas measurement cabinet also includes a door (8) connected to the cabinet body (1). The door (8) and the cabinet body (1), as well as the joints of the cabinet body (1), are sealed with sealing strips.

10. The nuclear power plant radioactive waste gas measuring cabinet according to claim 1, characterized in that, The cabinet body (1) is made of metal material, and the outer layer of the cabinet body (1) is provided with an anti-radiation layer.

Images