Gas supply system suitable for protective gas clothes in radioactive places

Abstract

A gas supply system suitable for a radioactive site protective gas garment comprises an external gas source and a concentric pipe switching device. An external air source is connected with the quick connector A, the quick connector A is connected with the air inlet pipe, the air inlet pipe is connected with the concentric pipe switching device through the quick connector B, and the quick connector C is connected with the concentric pipe switching device and the double-layer concentric pipe. The double-layer concentric pipe is connected with the concentric pipe switching device and is connected with the protective gas clothes through a quick connector D; the problems that in the exhaust process of an existing protective gas garment, gas is directly exhausted to a radioactive site through matched use of a one-way valve and a filtering device, when related parts break down in the exhaust process, personnel cannot judge in time, and aerosol intake causes personal injury are solved.

Description

Technical Field

[0001] The invention relates to the technical field of personnel protection in radioactive environments, and more particularly to an air supply system suitable for protective gas clothing in radioactive locations. Background Art

[0002] In the production and testing of nuclear fuel, nuclear reactor operation, nuclear facility decommissioning, nuclear accident emergency and radiation processing, in order to prevent the internal radiation hazards caused by the ingestion of aerosols by radioactive workers, wearing protective gas suits is a basic protective means. However, in the use of existing FH radioactive aerosol protective gas suit systems, nuclear protective ventilation gas suits and other protective gas suits, the air supply system directly discharges into the radioactive environment through a one-way valve with a filter device to ensure the normal pressure inside the gas suit. When the one-way valve and internal filter devices and other parts are abnormal during use, the user cannot make a timely judgment, and the radioactive atmosphere will enter the gas suit and directly contact the user. At this time, the protective gas suit cannot guarantee the personal safety of the operator. To this end, an air supply system for protective gas suits is designed to solve the existing problems. Summary of the invention

[0003] The purpose of the present invention is to design an air supply system for a protective gas suit to solve the problem that when the components of the existing protective gas suit are in abnormal working condition during the exhaust process, personnel cannot make timely judgments and the protective gas suit cannot ensure the personal safety of the user.

[0004] The technical solution of the present invention is as follows: an air supply system suitable for protective gas clothing in radioactive places, including an external gas source and a concentric tube switching device; the external gas source is connected to a quick connector A, the quick connector A is connected to an air intake pipe, the air intake pipe is connected to the concentric tube switching device through a quick connector B, and the quick connector C connects the concentric tube switching device and the double-layer concentric tube; the double-layer concentric tube is connected to the concentric tube switching device, and the double-layer concentric tube is connected to the protective gas clothing through a quick connector D.

[0005] A small bag-sealed flange is arranged at the end of the external gas source.

[0006] Quick connector A adopts KZE, KZF, or KZD open and closed quick connectors at both ends.

[0007] The air inlet pipe is a flexible hose that is resistant to high pressure, acid, alkali and corrosion.

[0008] The concentric tube switching device cooperates with the double-layer concentric tube. The double-layer concentric tube includes an inner layer and an interlayer. The inner layer is used for internal air supply of the protective gas suit, and the interlayer is used for exhaust of the protective gas suit. The inner layer and the interlayer are connected to the concentric tube switching device through a quick connector C, and the quick connector C is used to realize the connection between the inner layer and the interlayer of the double-layer concentric tube and the concentric tube switching device.

[0009] The concentric tube switching device is provided with an exhaust device and a control system.

[0010] A support frame and a small bag-sealed flange are arranged in the quick connector C between the double-layer gaps.

[0011] A support is arranged in the interlayer.

[0012] A pressure sensor and a pressure loss alarm sensor are arranged inside the gas protective clothing, and are connected to the concentric tube switching device.

[0013] The internal air path is connected to the protective air suit by Velcro.

[0014] The remarkable effects of the present invention are:

[0015] (1) Based on the working conditions of the protective gas suit, an air supply system for the protective gas suit is designed. By guiding the exhaust process of the protective gas suit into a clean environment, the problem that the exhaust process of the existing protective gas suit is directly discharged to a radioactive place through the use of a one-way valve and a filter device, and when the parts involved in the exhaust process fail, the personnel cannot make timely judgments and ingest aerosols, causing personal injury.

[0016] (2) By combining the air intake pipeline and the exhaust pipeline of the protective gas suit into a double-layer concentric tube and using the concentric tube switching device, the problem that when the air intake pipeline and the exhaust pipeline of the protective gas suit exist at the same time, the gas suit involves many and complicated pipelines, which is inconvenient for users to operate.

[0017] (3) By setting a pressure sensor inside the gas suit and feeding back the collected information to the exhaust device of the concentric tube switching device in a timely manner, the pressure balance inside the gas suit is ensured to be stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the air supply system for air suits;

[0019] Figure 2 This is a schematic diagram of the gas supply system;

[0020] Marks and corresponding parts names in the attached drawings:

[0021] In the figure: 11 - external air source; 12 - quick connector A; 13 - air inlet pipe; 14 - quick connector B; 15 - concentric tube switching device; 16 - quick connector C; 17 - double-layer concentric tube; 18 - quick connector D; 19 - protective gas suit; 110 - internal air circuit DETAILED DESCRIPTION

[0022] Many specific details are described in the following description to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways than those described herein, and those skilled in the art can make similar generalizations without violating the connotation of the present application, so the present application is not limited by the specific implementation disclosed below.

[0023] The terms used in one or more embodiments of the present application are only for the purpose of describing specific embodiments, and are not intended to limit one or more embodiments of the present application. The singular forms of "a", "said" and "the" used in one or more embodiments of the present application and the appended claims are also intended to include plural forms, unless the context clearly indicates other meanings. It should also be understood that the term "and / or" used in one or more embodiments of the present application refers to and includes any or all possible combinations of one or more associated listed items.

[0024] It should be understood that, although the terms first, second, etc. may be used to describe various information in one or more embodiments of the present application, such information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other. For example, without departing from the scope of one or more embodiments of the present application, the first may also be referred to as the second, and similarly, the second may also be referred to as the first.

[0025] The present invention is further described in detail below in conjunction with the accompanying drawings.

[0026] The air supply system for the protective gas suit designed by the present invention includes: an external gas source 11, a quick connector A12, an air inlet pipe 13, a quick connector B14, a concentric tube switching device 15, a quick connector C16, a double-layer concentric tube 17, a quick connector D18, a protective gas suit 19, and an internal gas circuit 110;

[0027] The external air source 11 needs to be clean, and can be provided by an air compressor located in a clean environment, a powered inflation device, or an air supply system reserved in a building, for supplying the internal air source of the protective air suit. The end is connected to the male / female head of the quick connector A12, so as to be quickly connected to the air inlet pipe 13. A small bag-sealed flange is also provided at the end. When the air supply system is to be used, it is sealed and packaged by bag-sealing to ensure the cleanliness of the male / female head of the quick connector A12.

[0028] The quick connector A12 is used to connect the external gas source 11 and the gas inlet pipeline 13, and can be used with commonly used KZE, KZF, KZD and other two-end open and closed quick connectors, which is convenient for quick connection operation.

[0029] The air inlet pipe 13 is connected to the external air source 11 and is composed of a high pressure resistant, acid and alkali resistant, and corrosion resistant flexible hose, which ensures that the movement space of personnel when using the protective air suit is not restricted.

[0030] The quick connector B14 is the same as the quick connector A12 and is used to connect the air intake line 13 and the concentric tube switching device 15 to ensure the connection of the air source entry path.

[0031] The concentric tube switching device 15 is used in conjunction with the double-layer concentric tube 17 to complete the entry and exhaust of the gas inside the protective gas suit 19. The exhaust device is set inside to work with the control system. The control system collects information in the internal gas path 110 and controls the exhaust device to ensure the pressure balance inside the protective gas suit 19. In order to ensure smooth exhaust process, the concentric tube switching device 15 is equipped with an exhaust device for assistance; in order to ensure the internal pressure balance and stability of the protective gas suit 19, a pressure sensor is set inside the protective gas suit 19, and the collected data is fed back to the exhaust device inside the concentric tube switching device 15 in a timely manner for adjustment, so as to ensure the comfort inside the protective gas suit 19 during use.

[0032] The quick connector C16 is used to connect the concentric tube switching device 15 and the double-layer concentric tube 17. Different from the quick connector A12 and the quick connector B14, one end of the quick connector C16 is connected to the double-layer concentric tube 17, and a support frame is required between the double-layer gaps for quick connection during use. At the same time, the quick connector C16 is also provided with a small bag-sealed flange. When waiting to be used, it is sealed and packaged by bag-sealing to ensure the cleanliness of the quick connector interface.

[0033] The double-layer concentric tube 17 is connected to the protective gas suit 19 and the concentric tube switching device 15. The inner layer of the double-layer concentric tube 17 is used for supplying air to the protective gas suit 19, and the interlayer is used for exhausting the protective gas suit 19. A support is arranged in the interlayer to prevent the double-layer concentric tube 17 from bending during use and causing the air path to be disconnected. It is used in combination with the concentric tube switching device 15.

[0034] The quick connector D18 has the same structure as the quick connector C16, and ensures the inflow and outflow of gas inside the protective gas suit 19;

[0035] The protective gas suit 19 can be set up with a double-layer structure, and decompression alarm sensors can be set up at positions that are not easy to bend, such as the top of the head, back, upper arms, forearms, thighs, etc. When the outer layer of the double-layer gas suit is damaged, the decompression alarm sensor transmits a signal to the outside, and the personnel judge that the outer part of the gas suit is damaged by the transmitted signal and leave the work site in time; or it can be set up as a single-layer structure, and external cooperation personnel can monitor the staff, observe the use of the gas suit, and inform the operating personnel to leave the work site in time when abnormal working conditions occur.

[0036] The entrance of the internal air circuit 110 is set at the waist or back of the air suit, and the air source delivered to the inside of the air suit is evenly delivered to the head, torso and limbs by a one-to-two / three-way valve to solve the problems of stuffiness and air supply inside the protective air suit 19, and sensors are set at the limbs and torso, and the collected information is transmitted to the 15 concentric tube switching device to ensure the internal air pressure balance and stability of the air suit. The air pipe of the internal air circuit 110 is a single layer and is connected to the protective air suit 19 by Velcro to ensure that the personnel are not disturbed by the air pipe when using the air suit. The internal air source of the protective air suit 19 is exhausted through the interlayer of the waist or back quick connector D18 male / female head.

[0037] An air supply system suitable for use with protective gas clothing in radioactive places has an air intake route of: external air source 11 → quick connector A12 → air intake pipe 13 → quick connector B14 → concentric tube switching device 15 → quick connector C16 → double-layer concentric tube 17 (inner layer) → quick connector D18 → protective gas clothing 19

[0038] The exhaust route is: protective gas clothing 19 → quick connector D18 → double-layer concentric tube 17 (sandwich) → quick connector C16 → exhaust device of concentric tube switching device 15 for exhaust.

[0039] The above description is only a preferred embodiment of this patent and is not intended to limit this patent. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of this patent should be included in the scope of protection of this patent.

[0040] It should be noted that, for the above-mentioned method embodiments, for the sake of simplicity of description, they are all expressed as a series of action combinations, but those skilled in the art should be aware that the present application is not limited by the described action sequence, because according to the present application, certain steps can be performed in other sequences or simultaneously. Secondly, those skilled in the art should also be aware that the embodiments described in the specification are all preferred embodiments, and the actions and modules involved are not necessarily required by the present application.

[0041] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0042] The preferred embodiments of the present application disclosed above are only used to help explain the present application. The optional embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of the present application. The present application selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present application, so that those skilled in the art can understand and use the present application well.

Claims

1. An air supply system suitable for protective gas clothing in radioactive places, characterized by: The invention comprises an external gas source (11) and a concentric tube switching device (15); the external gas source (11) is connected to a quick connector A (12), the quick connector A (12) is connected to an air intake pipe (13), the air intake pipe (13) is connected to the concentric tube switching device (15) via a quick connector B (14), the quick connector C (16) is connected to the concentric tube switching device (15) and a double-layer concentric tube (17); the double-layer concentric tube (17) is connected to the concentric tube switching device (15), and the double-layer concentric tube (17) is connected to a protective gas suit (19) via a quick connector D (18).

2. The air supply system for protective gas clothing in radioactive places according to claim 1, characterized in that: A small bag-sealed flange is provided at the end of the external gas source (11).

3. The air supply system for protective gas clothing in radioactive places according to claim 1, characterized in that: The quick connector A (12) adopts KZE, KZF or KZD two-end open and close quick connector.

4. The air supply system for protective gas clothing in radioactive places according to claim 1, characterized in that: The air inlet pipe (13) is a flexible hose that is resistant to high pressure, acid and alkali, and corrosion.

5. The air supply system for protective gas clothing in radioactive places according to claim 1, characterized in that: The concentric tube switching device (15) cooperates with the double-layer concentric tube (17). The double-layer concentric tube (17) includes an inner layer and an interlayer. The inner layer is used for supplying air to the protective gas suit (19), and the interlayer is used for exhausting the protective gas suit (19). The inner layer and the interlayer are connected to the concentric tube switching device (15) through a quick connector C (16), and the quick connector C16 realizes the connection between the inner layer and the interlayer of the double-layer concentric tube (17) and the concentric tube switching device (15).

6. The air supply system for protective gas clothing in radioactive places according to claim 5, characterized in that: The concentric tube switching device (15) is provided with an exhaust device and a control system.

7. The air supply system for protective gas clothing in radioactive places according to claim 5, characterized in that: A support frame and a small bag-sealed flange are arranged in the double-layer gap in the quick connector C (16).

8. The air supply system for protective gas clothing in radioactive places according to claim 5, characterized in that: A support is arranged in the interlayer.

9. The air supply system for protective gas clothing in radioactive places according to claim 1, characterized in that: A pressure sensor and a pressure loss alarm sensor are arranged inside the gas protection suit (19), and both are connected to the concentric tube switching device (15).

10. The air supply system for protective gas clothing in radioactive places according to claim 1, characterized in that: The internal air path (110) is connected to the protective air suit (19) by means of Velcro.

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