Portable radioactive gas sampling device

Abstract

The invention relates to the technical field of detection equipment in the aspects of radiation protection and environmental protection, and provides a portable radioactive gas sampling device which comprises a movable case, a partition plate and a sampling mechanism, the sampling mechanism comprises a gas inlet connector, a vacuum pump, a gas cylinder, a gas outlet connector and a communicating pipeline, the gas inlet connector, the vacuum pump, the gas cylinder and the gas outlet connector are fixedly arranged on the partition plate, and the gas inlet connector, the vacuum pump, the gas cylinder and the gas outlet connector are located on the same side of the partition plate; the communicating pipeline is located on the other side of the partition plate. The gas inlet connector, the vacuum pump, the gas cylinder, the gas outlet connector and the communicating pipeline are arranged in the movable case, rapid sampling of gas can be achieved by means of the series connection relation of the gas inlet connector, the vacuum pump, the gas cylinder, the gas outlet connector and the communicating pipeline, all the components are reasonably arranged by arranging the partition plate and separating the communicating pipeline from other components through the partition plate, and the sampling efficiency is improved. Therefore, the operation efficiency of the sampling device is improved.

Description

Technical Field

[0001] The invention relates to the technical field of gas sampling equipment, and in particular to a portable radioactive gas sampling device. Background Art

[0002] Radioactive gas refers to gas containing radioactive nuclides. Its emission into the external environment will have serious impacts on the air and human body. In order to ensure environmental safety and human health, it is necessary to sample and test the relevant gases.

[0003] The invention patent with announcement number CN110101196B discloses a portable gas sampling box, which belongs to the field of gas sampling technology, and includes a box body, which is a square structure with an open top, and a sampling can placement area is provided in the box body; a cover plate for closing the open top, one end of the cover plate is hinged to the top side wall of the box body, and a plurality of placement slots are provided on the inner side of the cover plate; a telescopic bracket, one end of the telescopic bracket is hinged to one side of the bottom end of the box body, and the other end of the telescopic bracket is fixedly connected with a non-slip foot; a shoulder strap, and the shoulder strap is fixedly connected to one side of the box body. The beneficial effects are that it is easy to use, easy to carry, can cope with different weather conditions, and has sufficient and reasonable storage space.

[0004] In the above technical solution, in order to improve the portability of the device, a shoulder strap, a telescopic baffle and a telescopic bracket are provided on the box. However, when sampling radioactive gases, a large number of components and pipes connecting the components are required, resulting in a relatively complex structure inside the box, which is not conducive to improving the gas sampling efficiency. Summary of the invention

[0005] In view of this, the present invention proposes a portable radioactive gas sampling device, which integrates the sampling mechanism in a mobile chassis and uses partitions to reasonably separate it, thereby simplifying the structure of the operating space of the sampling device and facilitating improving the gas sampling efficiency.

[0006] The technical solution of the present invention is implemented as follows: The present invention provides a portable radioactive gas sampling device, comprising a mobile chassis, a partition and a sampling mechanism, wherein:

[0007] The partition is fixedly arranged in the mobile chassis;

[0008] The sampling mechanism includes an air inlet connector, a vacuum pump, a gas cylinder, an air outlet connector and a connecting pipeline. The air inlet connector, the vacuum pump, the gas cylinder and the air outlet connector are all fixedly arranged on the partition and are connected in series in sequence through the connecting pipeline. The air inlet connector, the vacuum pump, the gas cylinder and the air outlet connector are located on the same side of the partition, and the connecting pipeline is located on the other side of the partition.

[0009] On the basis of the above technical solution, preferably, the sampling mechanism also includes a three-way control valve, which is fixedly arranged on the partition and located on the side of the partition away from the connecting pipeline, and the input end and one of the output ends of the three-way control valve are connected and arranged in the connecting pipeline between the vacuum pump and the gas cylinder, and the other output end of the three-way control valve is connected to the connecting pipeline between the gas cylinder and the gas outlet connector.

[0010] More preferably, it also includes a detection mechanism, which includes a first pressure gauge, which is fixedly mounted on the partition and located on a side of the partition away from the connecting pipeline, and an input end of the first pressure gauge is connected to the connecting pipeline between the three-way control valve and the gas cylinder.

[0011] More preferably, the sampling mechanism also includes a three-way joint, which is located on a side of the partition close to the connecting pipeline, and two of the three-way joints are connected in the connecting pipeline between the gas cylinder and the gas outlet joint, and the other one of the three-way joints is connected to the output end of the three-way control valve located between the gas cylinder and the gas outlet joint.

[0012] More preferably, the sampling mechanism also includes a flow meter, which is fixedly disposed on the partition and located on a side of the partition away from the connecting pipe, and the flow meter is connected to the connecting pipe between the three-way connector and the air outlet connector.

[0013] More preferably, the sampling mechanism also includes a filter, which is fixedly disposed on the partition and located on a side of the partition away from the connecting pipe, and the filter is connected to the connecting pipe between the air inlet connector and the vacuum pump.

[0014] On the basis of the above technical solution, preferably, the gas cylinder comprises a cylinder body and two switch valves, wherein:

[0015] The bottle body is detachably fixed on the partition;

[0016] The two switch valves are respectively fixedly arranged at the two ends of the bottle body and are connected with the interior thereof, and the two switch valves are both connected with the connecting pipeline and are detachably fixedly connected.

[0017] On the basis of the above technical solution, preferably, the partition includes a plate body and a plurality of support seats, wherein:

[0018] The plate body is located in the middle of the mobile chassis, and the sampling mechanism is connected to the plate body;

[0019] The support seat includes a support portion and two connecting portions, the support portion is perpendicular to the plate body; the two connecting portions are integrally formed at both ends of the support portion, and are perpendicular and continuously arranged thereto, and the two connecting portions are respectively abutted against and fixedly connected to the plate body and the inner wall of the mobile chassis.

[0020] On the basis of the above technical solution, preferably, the mobile chassis includes a bottom box, a top cover, a plurality of spring claws and two handles, wherein:

[0021] The partition plate and the sampling mechanism are both arranged in the bottom box;

[0022] The top cover is disposed against the bottom box and encloses the bottom box to form a sealed cavity;

[0023] The spring claw is fixedly arranged on the top cover and is clamped with the bottom box;

[0024] The two handles are rotatably arranged at the two ends of the bottom box respectively.

[0025] On the basis of the above technical solution, preferably, the mobile chassis further includes a pull rod and a bottom wheel, wherein:

[0026] The pull rod is slidably arranged at one end of the bottom box;

[0027] The bottom wheel is rotatably arranged at one end of the bottom box away from the pull rod.

[0028] The portable radioactive gas sampling device of the present invention has the following beneficial effects compared with the prior art:

[0029] (1) By arranging an air inlet joint, a vacuum pump, a gas cylinder, an air outlet joint and a connecting pipe in the mobile chassis and utilizing their series relationship, rapid sampling of gas can be achieved. By arranging a partition plate and utilizing it to separate the connecting pipe and other components, each component is reasonably arranged, thereby improving the operating efficiency of the sampling device;

[0030] (2) By setting a three-way control valve, different sections of the gas cylinder collecting gas can be controlled, and by setting a first pressure gauge, the pressure during the gas sampling process can be monitored in real time to ensure the normal operation of the sampling device;

[0031] (3) By configuring the partition to include a plate body, a supporting portion, and a connecting portion, the supporting performance of the partition for other components can be improved. By configuring a handle, a pull rod, and a bottom wheel on the bottom box, the portability of the mobile chassis can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0033] Figure 1 is a cross-sectional view of a portable radioactive gas sampling device of the present invention;

[0034] Figure 2 A top view of a partition in a portable radioactive gas sampling device of the present invention;

[0035] Figure 3 It is a three-dimensional diagram of a sampling mechanism and a detection mechanism in a portable radioactive gas sampling device of the present invention;

[0036] Figure 4 A schematic diagram of the connection between a sampling mechanism and a detection mechanism in a portable radioactive gas sampling device of the present invention;

[0037] Figure 5 A three-dimensional diagram of a gas cylinder in a portable radioactive gas sampling device of the present invention;

[0038] Figure 6 A three-dimensional diagram of a partition in a portable radioactive gas sampling device of the present invention;

[0039] Figure 7 It is a front view of a support base in a portable radioactive gas sampling device of the present invention;

[0040] Figure 8 A three-dimensional diagram of a portable radioactive gas sampling device of the present invention;

[0041] Fig. 9 A three-dimensional diagram of a top cover of a portable radioactive gas sampling device of the present invention;

[0042] Fig.10 The present invention is a cross-sectional view of a spring clamp in a portable radioactive gas sampling device.

[0043] Among them: 1. Mobile chassis; 11. Bottom box; 12. Top cover; 13. Spring claw; 14. Handle; 15. Pull rod; 16. Bottom wheel; 2. Partition; 21. Plate body; 22. Support seat; 221. Support part; 222. Connecting part; 3. Sampling mechanism; 31. Air inlet connector; 32. Filter; 33. Vacuum pump; 34. Three-way control valve; 35. Gas cylinder; 351. Bottle body; 352. Switch valve; 36. Three-way connector; 37. Flow meter; 38. Air outlet connector; 30. Connecting pipeline; 4. Detection mechanism; 41. First pressure gauge; 42. Second pressure gauge. DETAILED DESCRIPTION

[0044] The following will be combined with the specific implementation of the present invention to clearly and completely describe the technical solution in the present invention. Obviously, the described implementation is only a part of the implementation of the present invention, not all of the implementation. Based on the implementation of the present invention, all other implementations obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0045] like Figure 1-10 As shown, a portable radioactive gas sampling device of the present invention comprises a mobile chassis 1, a partition 2, a sampling mechanism 3 and a detection mechanism 4, and is used for sampling radioactive gas.

[0046] The mobile chassis 1 is used to carry and protect other components.

[0047] The sampling mechanism 3 and the detection mechanism 4 are used to collect radioactive gas. The sampling mechanism 3 includes an air inlet connector 31, a filter 32, a vacuum pump 33, a three-way control valve 34, a gas cylinder 35, a three-way connector 36, a flow meter 37, an air outlet connector 38 and a connecting pipeline 30. The detection mechanism 4 includes a first pressure gauge 41. Figure 3 and Figure 4 As shown, the air inlet connector 31, the filter 32, the vacuum pump 33, the three-way control valve 34, the gas cylinder 35, the three-way connector 36, the flow meter 37 and the air outlet connector 38 are sequentially connected in series through the connecting pipeline 30, wherein the three-way control valve 34 has an input end and two output ends, the three-way connector 36 has three connectors, the input end and one of the output ends of the three-way control valve 34 are connected and arranged in the connecting pipeline 30 between the vacuum pump 33 and the gas cylinder 35, two of the connectors of the three-way connector 36 are connected and arranged in the connecting pipeline 30 between the gas cylinder 35 and the flow meter 37, and the other connector thereof is connected to the other output end of the three-way control valve 34 through the connecting pipeline 30, and the input end of the first pressure gauge 41 is connected to the connecting pipeline 30 between the three-way control valve 34 and the gas cylinder 35; as shown in FIG. Figure 3 and Figure 4As shown, when the input end of the three-way control valve 34 is connected to the output end thereof connected to the gas cylinder 35, the vacuum pump 33 is started, and the external gas can flow along the path of the gas inlet connector 31 → the filter 32 → the vacuum pump 33 → the three-way control valve 34 → the gas cylinder 35 → the three-way connector 36 → the flow meter 37 → the gas outlet connector 38, so that the gas is stored in the gas cylinder 35, and the gas collection and sampling is realized.

[0048] In order to ensure the quality of gas detection, it is preferred to collect the middle segment of the gas. To achieve this purpose, when collecting gas, the input end of the three-way control valve 34 can be connected to the output end connected to the three-way joint 36. After starting the vacuum pump 33, the external gas flows along the path of the air inlet joint 31→filter 32→vacuum pump 33→three-way control valve 34→three-way joint 36→flow meter 37→air outlet joint 38, so that the front segment of the gas is not collected into the gas cylinder 35. After the middle segment of the gas enters the air inlet joint 31, the three-way control valve 34 is adjusted to allow the external gas to flow along the path of the air inlet joint 31→filter 32→vacuum pump 33→three-way control valve 34→gas cylinder 35→three-way joint 36→flow meter 37→air outlet joint 38, thereby achieving the technical effect of collecting the gas in the middle segment into the gas cylinder 35.

[0049] During the gas collection and sampling process, the gas is filtered by the filter 32 to prevent impurities from entering the gas cylinder 35; the flow rate of the gas in the connecting pipeline 30 can be controlled by the flow meter 37, thereby controlling various parameters during the gas collection and sampling process.

[0050] Of course, the above operation modes are only a few of the use conditions of this technical solution, and this technical solution can still be adapted to other conditions. In different operation modes, the first pressure gauge 41 can monitor the pressure of the gas in the gas collection pipeline in real time, so that the sampling device can maintain normal operation.

[0051] like Figure 2As shown, the partition 2 is fixedly arranged in the mobile chassis 1, and the air inlet connector 31, the filter 32, the vacuum pump 33, the three-way control valve 34, the gas cylinder 35, the flow meter 37, the air outlet connector 38 and the first pressure gauge 41 are all fixedly arranged on the partition 2, and the air inlet connector 31, the filter 32, the vacuum pump 33, the three-way control valve 34, the gas cylinder 35, the flow meter 37, the air outlet connector 38 and the first pressure gauge 41 are located on the same side of the partition 2, while the three-way connector 36 and the connecting pipe 30 are located on the other side of the partition 2, that is, the partition 2 divides the interior of the mobile chassis 1 into two spaces. During the gas collection and sampling process, the components that need to be connected or operated are located on the outside of the partition 2, while the three-way connector 36 and the connecting pipe 30 that do not need to be adjusted are hidden between the partition 2 and the mobile chassis 1. This setting method allows each mechanism to be reasonably laid out, greatly simplifies the operating space of the sampling device, and is conducive to improving the gas sampling efficiency.

[0052] During the gas sampling process, the gas cylinder 35 needs to be frequently disassembled and assembled. In order to facilitate the disassembly and assembly of the gas cylinder 35 and avoid the loss of the internal gas when the gas cylinder 35 is disassembled, Figure 5 As shown, the gas cylinder 35 is configured to include a bottle body 351 and two switch valves 352. The bottle body 351 is detachably fixed on the partition 2. The two switch valves 352 are respectively fixedly arranged at both ends of the bottle body 351 and are connected with the interior thereof. The two switch valves 352 are both connected with the connecting pipeline 30 and are detachably fixedly connected. When the gas is collected and the gas cylinder 35 is disassembled, the two switch valves 352 are first closed, and then the two switch valves 352 are removed from the connecting pipeline 30. By reversing the above steps, the new gas cylinder 35 can be installed.

[0053] In some embodiments, the inner wall surface roughness of the connecting pipe 30 reaches R0.8, the effective volume of the bottle body 351 is not less than 280ml, the vacuum pump flow is not less than 2.5L / min, and the pressure in the connecting pipe 30 is not less than 0.5MPa during gas collection; the mobile chassis 1 is also equipped with a rechargeable battery and corresponding switching equipment, and the battery life is greater than 3h.

[0054] As a preferred embodiment, the mobile chassis 1 includes a bottom box 11, a top cover 12, a plurality of spring claws 13, two handles 14, a pull rod 15 and a bottom wheel 16. The top cover 12 is disposed against the bottom box 11 and encloses the bottom box 11 to form a sealed cavity. The spring claws 13 are fixedly disposed on the top cover 12 and are engaged with the bottom box 11. Figure 8-Figure 10 As shown, by utilizing the clamping connection between the spring claw 13 and the bottom box 11, the top cover 12 and the bottom box 11 can be quickly separated or quickly installed, thereby exposing the partition 2 and the sampling mechanism 3 in the bottom box 11 to the external environment or sealing and protecting the partition 2 and the sampling mechanism 3.

[0055] The two handles 14 are rotatably arranged at the two ends of the bottom box 11. When the device is idle, the handles 14 are rotated to a position close to the two ends of the bottom box 11. When the mobile chassis 1 needs to be moved, the two handles 14 are rotated to extend out of the side walls of the mobile chassis 1, and the mobile chassis 1 can be moved by holding the handles 14.

[0056] The pull rod 15 is slidably arranged at one end of the bottom box 11, and the bottom wheel 16 is rotatably arranged at the end of the bottom box 11 away from the pull rod 15. When the pull rod 15 is pulled in a direction away from the bottom box 11, the pull rod 15 can be supported by hand to drive the mobile chassis 1 to move, thereby facilitating the transfer of the sampling device and improving the portability of the sampling device.

[0057] In some embodiments, the total weight of the sampling device does not exceed 40 kg.

[0058] like Figure 6 and Figure 7 As shown, the partition 2 includes a plate body 21 and a plurality of support seats 22. The plate body 21 is located in the middle of the mobile chassis 1 to separate the internal cavity of the mobile chassis 1. The sampling mechanism 3 and the detection mechanism 4 are both connected to the plate body 21, and the plate body 21 is connected and fixed to the mobile chassis 1 through a plurality of support seats 22.

[0059] like Figure 7 As shown, the support seat 22 includes a support portion 221 and two connecting portions 222. The support portion 221 is perpendicular to the plate body 21. The two connecting portions 222 are integrally formed at both ends of the support portion 221, and are perpendicular and continuously arranged thereto. The support portion 221 and the two connecting portions 222 are combined to form a ]-shaped structure, which can provide a good support effect for the plate body 21 and prevent the plate body 21 from tilting during the use of the device. The two connecting portions 222 are respectively abutted against and fixedly connected to the inner walls of the plate body 21 and the mobile chassis 1, thereby realizing the connection and fixation of the plate body 21 and the mobile chassis 1.

[0060] The method of using a portable radioactive gas sampling device of the present invention is as follows:

[0061] First, move the mobile chassis 1 to the gas collection position, and remove the top cover 12 from the bottom box 11 by adjusting the spring claws 13, then start the vacuum pump 33, and adjust the three-way control valve 34 to allow the gas to be tested to remain in the gas cylinder 35, finally close the two switch valves 352, and remove the gas cylinder 35 for inspection.

[0062] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A portable radioactive gas sampling device, characterized in that: It comprises a mobile chassis (1), a partition (2) and a sampling mechanism (3), wherein: The partition plate (2) is fixedly arranged in the mobile chassis (1); The sampling mechanism (3) comprises an air inlet joint (31), a vacuum pump (33), a gas cylinder (35), an air outlet joint (38) and a connecting pipeline (30); the air inlet joint (31), the vacuum pump (33), the gas cylinder (35) and the air outlet joint (38) are all fixedly arranged on the partition (2) and are sequentially connected in series through the connecting pipeline (30); the air inlet joint (31), the vacuum pump (33), the gas cylinder (35) and the air outlet joint (38) are located on the same side of the partition (2), and the connecting pipeline (30) is located on the other side of the partition (2).

2. A portable radioactive gas sampling device as claimed in claim 1, characterized in that: The sampling mechanism (3) further comprises a three-way control valve (34), the three-way control valve (34) being fixedly arranged on the partition (2) and being located on a side of the partition (2) away from the connecting pipeline (30), and an input end and one of the output ends of the three-way control valve (34) being connected and arranged in the connecting pipeline (30) between the vacuum pump (33) and the gas cylinder (35), and the other output end of the three-way control valve (34) being connected and arranged in the connecting pipeline (30) between the gas cylinder (35) and the gas outlet joint (38).

3. A portable radioactive gas sampling device as claimed in claim 2, characterized in that: The device further comprises a detection mechanism (4), wherein the detection mechanism (4) comprises a first pressure gauge (41), wherein the first pressure gauge (41) is fixedly arranged on the partition (2) and is located on a side of the partition (2) away from the connecting pipeline (30), and an input end of the first pressure gauge (41) is connected to the connecting pipeline (30) between the three-way control valve (34) and the gas cylinder (35).

4. A portable radioactive gas sampling device as claimed in claim 3, characterized in that: The sampling mechanism (3) further comprises a three-way joint (36), wherein the three-way joint (36) is located on a side of the partition (2) close to the connecting pipeline (30), and two of the joints of the three-way joint (36) are connected to the connecting pipeline (30) between the gas cylinder (35) and the gas outlet joint (38), and the other joint is connected to the output end of the three-way control valve (34) located between the gas cylinder (35) and the gas outlet joint (38).

5. A portable radioactive gas sampling device as claimed in claim 4, characterized in that: The sampling mechanism (3) further comprises a flow meter (37), wherein the flow meter (37) is fixedly arranged on the partition (2) and is located on a side of the partition (2) away from the connecting pipeline (30), and the flow meter (37) is connected to the connecting pipeline (30) between the three-way joint (36) and the air outlet joint (38).

6. A portable radioactive gas sampling device as claimed in claim 5, characterized in that: The sampling mechanism (3) further comprises a filter (32), wherein the filter (32) is fixedly arranged on the partition (2) and is located on a side of the partition (2) away from the connecting pipe (30), and the filter (32) is connected to the connecting pipe (30) between the air inlet connector (31) and the vacuum pump (33).

7. A portable radioactive gas sampling device as claimed in claim 1, characterized in that: The gas cylinder (35) comprises a cylinder body (351) and two switch valves (352), wherein: The bottle body (351) is detachably fixed on the partition (2); The two switch valves (352) are respectively fixedly arranged at the two ends of the bottle body (351) and are connected to the interior thereof, and the two switch valves (352) are both connected to the connecting pipeline (30) and are detachably fixedly connected.

8. A portable radioactive gas sampling device as claimed in claim 1, characterized in that: The partition (2) comprises a plate body (21) and a plurality of support seats (22), wherein: The plate body (21) is located in the middle of the mobile chassis (1), and the sampling mechanism (3) is connected to the plate body (21); The support seat (22) comprises a support portion (221) and two connecting portions (222); the support portion (221) is perpendicular to the plate body (21); the two connecting portions (222) are respectively integrally formed at two ends of the support portion (221), and are perpendicular to and continuously arranged therewith; the two connecting portions (222) are respectively in contact with and fixedly connected to the plate body (21) and the inner wall of the mobile chassis (1).

9. A portable radioactive gas sampling device as claimed in claim 1, characterized in that: The mobile chassis (1) comprises a bottom box (11), a top cover (12), a plurality of spring claws (13) and two handles (14), wherein: The partition plate (2) and the sampling mechanism (3) are both arranged in the bottom box (11); The top cover (12) is disposed in contact with the bottom box (11) and is enclosed therewith to form a sealed cavity; The spring claw (13) is fixedly arranged on the top cover (12) and is clamped with the bottom box (11); The two handles (14) are rotatably arranged at the two ends of the bottom box (11).

10. A portable radioactive gas sampling device as claimed in claim 1, characterized in that: The mobile chassis (1) further comprises a pull rod (15) and a bottom wheel (16), wherein: The pull rod (15) is slidably arranged at one end of the bottom box (11); The bottom wheel (16) is rotatably arranged at an end of the bottom box (11) away from the pull rod (15).

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