CN217059549U - Sampling device capable of collecting radioactive aerosol - Google Patents
Sampling device capable of collecting radioactive aerosol Download PDFInfo
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- CN217059549U CN217059549U CN202122652821.1U CN202122652821U CN217059549U CN 217059549 U CN217059549 U CN 217059549U CN 202122652821 U CN202122652821 U CN 202122652821U CN 217059549 U CN217059549 U CN 217059549U
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Abstract
The utility model discloses a sampling device that can gather radioactive aerosol, include the sampling box and install the chamber door on it, install whirlwind formula admission barrel through the backup pad in the sampling box, be provided with the intake pipe rather than inside being linked together on the whirlwind formula admission barrel, the inlet end of intake pipe runs through the lateral wall of sampling box and extends to its outside, the top and the bottom of whirlwind formula admission barrel are connected with last exhaust column and lower exhaust column respectively to form the sampling return circuit through last exhaust column and lower exhaust column. Has the beneficial effects that: the sampling box is provided with a dredging structure communicated with the aerosol sampling head, so that the aerosol sampling head can be dredged in real time, and the phenomenon that the aerosol sampling head is blocked is difficult to occur; the aerosol sampling head forms an upper sampling loop and a lower sampling loop through the upper exhaust pipe and the lower exhaust pipe, and the sampling device can continuously work when the radioactive aerosol is subjected to large-flow collection.
Description
Technical Field
The utility model relates to a radiation environment and protection technical field especially relate to a sampling device that can gather radioactive aerosol.
Background
The radioactive aerosol monitoring is an important content of nuclear emergency monitoring and conventional environmental nuclear radiation monitoring, and the collection of the radioactive aerosol is a precondition for the development of monitoring work. In order to meet the requirement of radiation environment monitoring work, the ultra-large flow radioactive aerosol sampler is gradually and widely applied. The existing ultra-large flow radioactive aerosol sampler generally adopts a single-loop mode. The large-flow radioactive aerosol sampler runs under the condition of complicated meteorological conditions or serious pollution of atmospheric particulates, and the blockage of the aerosol sampler easily causes the damage of equipment and is difficult to replace.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a sampling device capable of collecting radioactive aerosol, a dredging structure communicated with an aerosol sampling head is arranged on a sampling box, the aerosol sampling head can be dredged in real time, and the aerosol sampling head is ensured to be difficult to block; the aerosol sampling head forms an upper sampling loop and a lower sampling loop through the upper exhaust pipe and the lower exhaust pipe, so that continuous work can be realized when the sampling device collects radioactive aerosol at a large flow rate, and the aerosol sampling head is convenient to replace.
The technical scheme of the utility model is realized like this:
a sampling device capable of collecting radioactive aerosol comprises a sampling box and a box door arranged on the sampling box, wherein a cyclone air inlet cylinder is arranged in the sampling box through a supporting plate, an air inlet pipe communicated with the interior of the cyclone air inlet cylinder is arranged on the cyclone air inlet cylinder, the air inlet end of the air inlet pipe penetrates through the side wall of the sampling box and extends to the exterior of the sampling box, the top and the bottom of the cyclone air inlet cylinder are respectively connected with an upper air exhaust pipe and a lower air exhaust pipe and form a sampling loop through the upper air exhaust pipe and the lower air exhaust pipe, the sampling loop comprises an aerosol sampling head connected with the upper air exhaust pipe and the lower air exhaust pipe, the other end of the aerosol sampling head is connected with one connector of a three-way connector through the air exhaust pipe, the other two connectors of the three-way connector are respectively connected with a vacuum pressure meter and a flowmeter, the flowmeter is connected with a vacuum pump, and the flowmeter is connected with a flow monitor, the sampling box is provided with a dredging structure communicated with the aerosol sampling head to dredge the aerosol sampling head; vacuum pressure table, flow monitor and vacuum pump all with controller electric connection, vacuum pressure table, flow monitor and controller are installed on the control panel of chamber door.
Further, dredge the structure including installing the air compressor at the sampling box top, air compressor's output is connected with dredging pipe, dredging pipe runs through the surface of sampling box and backup pad in proper order to extend to the bottom of sampling box, dredging pipe keeps away from air compressor's one end and is provided with sealed end cap, dredging pipe is last be provided with last exhaust column, the interior air duct that communicates of lower exhaust column.
Furthermore, a flow regulating valve and an electric control pneumatic valve are arranged outside the sampling box on the dredging pipe and used for controlling the flow of the dredging pipe and closing the dredging pipe.
Furthermore, a one-way valve is installed on the air guide tube, and the air outlet end of the air guide tube is perpendicular to the cross sections of the upper exhaust pipe and the lower exhaust pipe.
Furthermore, the top of aerosol sampling head is provided with the joint with upper exhaust pipe, lower exhaust pipe screw-thread fit, the bottom of aerosol sampling head is provided with the quick connector who can dismantle the connection with the blast pipe.
Furthermore, a sampler mounting plate is arranged in the aerosol sampling head, a plurality of particle size measuring samplers and a plurality of TSP samplers are arranged on the sampler mounting plate, and the particle size measuring samplers are arranged on the outer edges of the TSP samplers and are uniformly distributed in an annular mode.
Further, the particle size measuring sampler is a serial impact type sampler, and the TSP sampler is a large-flow sampler or a medium-flow sampler.
Furthermore, an electromagnetic valve is arranged between the aerosol sampling head and the three-way joint.
The utility model has the advantages that: the aerosol sampling head forms an upper sampling loop and a lower sampling loop through the upper exhaust pipe and the lower exhaust pipe, when the sampling device is started, the aerosol sampling head connected with the upper exhaust pipe is put into operation, and the aerosol sampling head connected with the lower exhaust pipe is reserved. When the aerosol sampling head connected with the upper exhaust pipe is blocked, the controller controls the aerosol sampling head connected with the lower exhaust pipe to be put into operation, and the aerosol sampling head connected with the upper exhaust pipe is standby to realize preseparation and collection of radioactive aerosol samples. The sampling device can work continuously when the sampling device collects the radioactive aerosol in a large flow. In addition, install the mediation structure that is linked together with the aerosol sampling head on the sampling box, can dredge in real time the aerosol sampling head, guarantee that blocking phenomenon can not appear in the aerosol sampling head.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a front view of a sampling device capable of collecting radioactive aerosols;
FIG. 2 is a schematic internal view of a sampling device capable of collecting radioactive aerosols;
FIG. 3 is a schematic structural diagram of an aerosol sampling head;
FIG. 4 is a schematic view of a sampler mounting plate.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
According to the utility model discloses an embodiment provides a sampling device that can gather radioactive aerosol.
Referring to fig. 1-4, the sampling device capable of collecting radioactive aerosol according to the embodiment of the present invention comprises a sampling box 1 and a box door 2 mounted thereon, a cyclone air inlet cylinder 4 is mounted in the sampling box 1 through a support plate 3, an air inlet pipe 5 communicated with the inside of the cyclone air inlet cylinder 4 is provided on the cyclone air inlet cylinder 4, the air inlet end of the air inlet pipe 5 penetrates through the side wall of the sampling box 1 and extends to the outside thereof, the top and the bottom of the cyclone air inlet cylinder 4 are respectively connected with an upper exhaust pipe 6 and a lower exhaust pipe 7, and form a sampling loop through the upper exhaust pipe 6 and the lower exhaust pipe 7, the sampling loop comprises an aerosol sampling head 8 connected with the upper exhaust pipe 6 and the lower exhaust pipe 7, the other end of the aerosol sampling head 8 is connected with a joint of a three-way joint 10 through an exhaust pipe 9, the other two joints of the three-way joint 10 are respectively connected with a vacuum pressure gauge 11 and a flowmeter 12, the flow meter 12 is connected with a vacuum pump 13, the flow meter 12 is connected with a flow monitor 14, and the sampling box 1 is provided with a dredging structure communicated with the aerosol sampling head 8 for dredging the aerosol sampling head 8; the vacuum pressure gauge 11, the flow monitor 14 and the vacuum pump 13 are all electrically connected with the controller, and the vacuum pressure gauge 11, the flow monitor 14 and the controller 15 are installed on a control panel of the box door 2.
Through the technical scheme: the controller 15 controls and manages the operation conditions of the vacuum pressure gauge 11, the electromagnetic valve 27, the flow monitor 14 and the vacuum pump 13 through a control signal line, so that the operation and the stop of the sampling loop are realized.
The aerosol sampling head 8 forms a sampling loop through the upper exhaust pipe 6 and the lower exhaust pipe 7, when the sampling device is started, the aerosol sampling head 8 connected with the upper exhaust pipe 6 is put into operation, the aerosol sampling head 8 connected with the lower exhaust pipe 7 is used for a standby purpose, and preseparation and collection of radioactive aerosol samples are realized. When the aerosol sampling head 8 connected with the upper exhaust pipe 6 is blocked, the controller 15 controls the aerosol sampling head 8 connected with the lower exhaust pipe 7 to be put into operation, the aerosol sampling head 8 connected with the upper exhaust pipe 6 is reserved, and the radioactive aerosol sample is pre-separated and collected. The sampling device can continuously work when the sampling device collects the radioactive aerosol in a large flow.
The vacuum pressure gauge 11 can feed back the pressure monitoring information of the sampling loop to the controller 15, when the negative pressure of the sampling loop reaches a preset value, the pressure gauge outputs a signal, and the controller cuts off the power supply of the vacuum pump 13 on the corresponding loop.
The flow monitor 14 is used for monitoring and controlling flow, and can display instantaneous flow, accumulated flow and total accumulated flow of the upper and lower acquisition loop flow meters on line in real time. When the total accumulated flow reaches a preset value, the flow monitor outputs a signal to cut off the power supply of the vacuum pump 13, and the aerosol sampling system stops working.
In addition, install the mediation structure that is linked together with aerosol sampling head 8 on the sampling box 1, can dredge aerosol sampling head 8 in real time, guarantee that aerosol sampling head 8 can not appear blockking up.
Further, dredge the structure including installing air compressor 16 at 1 top of sampling box, air compressor 16's output is connected with dredging pipe 17, dredging pipe 17 runs through sampling box 1 and backup pad 3's surface in proper order to extend to sampling box 1's bottom, dredging pipe 17 is provided with sealed end cap from air compressor 16's one end, be provided with on dredging pipe 17 with last exhaust stack 6, the air duct 18 that communicates in the exhaust stack 7 down.
Through the technical scheme: the air compressor 16 guides air to the joint of the aerosol sampling head 8 and the upper exhaust pipe 6 and the lower exhaust pipe 7 through the air guide pipe 18.
Furthermore, a flow regulating valve 19 and an electrically controlled pneumatic valve 20 are mounted on the dredging pipe 17 outside the sampling box 1, and are used for controlling the flow of the dredging pipe 17 to be large or small and to be closed.
Through the technical scheme: and a flow regulating valve 19 and an electrically controlled pneumatic valve 20 are arranged on the dredging pipe 17 outside the sampling box 1 and used for controlling the flow of the dredging pipe 17 and closing the dredging pipe.
Further, a one-way valve 21 is installed on the air duct 18, and the air outlet end of the air duct 18 is perpendicular to the sections of the upper exhaust pipe 6 and the lower exhaust pipe 7.
Through the technical scheme: the air duct 18 is provided with a one-way valve 21 to prevent aerosol from entering the air duct 18. The air outlet end of the air duct 18 is vertical to the sections of the upper air exhaust pipe 6 and the lower air exhaust pipe 7, so that the flow direction of the dredged air flow is consistent with that of the aerosol.
Furthermore, the top end of the aerosol sampling head 8 is provided with a joint 22 which is in threaded fit with the upper exhaust pipe 6 and the lower exhaust pipe 7, and the bottom end of the aerosol sampling head 8 is provided with a quick connector 23 which is detachably connected with the exhaust pipe 9.
Through the technical scheme: the top end of the aerosol sampling head 8 is provided with a joint 22 which is matched with the internal threads of the upper exhaust pipe 6 and the lower exhaust pipe 7, so that the aerosol sampling head 8 can be conveniently detached from the upper exhaust pipe 6 and the lower exhaust pipe 7; the bottom of the aerosol sampling head 8 is provided with a quick connector 23 detachably connected with the exhaust pipe 9, so that the installation and the disassembly are convenient.
Further, a sampler mounting plate 24 is arranged in the aerosol sampling head 8, a plurality of particle size measuring samplers 25 and a plurality of TSP samplers 26 are arranged on the sampler mounting plate 24, and the particle size measuring samplers 25 are arranged at the outer edges of the TSP samplers 26 and are uniformly arranged in an annular shape.
Through the technical scheme: the sampler mounting plate 24 is provided with a plurality of particle size measuring samplers 25 and a plurality of TSP samplers 26, which can complete the change rule of aerosol concentration, particle size distribution and concentration and particle size distribution with time.
Further, the particle size measuring sampler 25 is a serial impact type sampler, and the TSP sampler 26 is a large flow sampler or a medium flow sampler.
Further, an electromagnetic valve 27 is arranged between the aerosol sampling head 8 and the three-way joint 10.
The above, only be the embodiment of the preferred of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, which are designed to be replaced or changed equally, all should be covered within the protection scope of the present invention.
Claims (8)
1. The sampling device capable of collecting radioactive aerosol is characterized by comprising a sampling box (1) and a box door (2) arranged on the sampling box, wherein a cyclone type air inlet cylinder (4) is arranged in the sampling box (1) through a supporting plate (3), an air inlet pipe (5) communicated with the interior of the cyclone type air inlet cylinder (4) is arranged on the cyclone type air inlet cylinder, the air inlet end of the air inlet pipe (5) penetrates through the side wall of the sampling box (1) and extends to the exterior of the sampling box, the top and the bottom of the cyclone type air inlet cylinder (4) are respectively connected with an upper exhaust pipe (6) and a lower exhaust pipe (7) and form a sampling loop through the upper exhaust pipe (6) and the lower exhaust pipe (7), the sampling loop comprises an aerosol sampling head (8) connected with the upper exhaust pipe (6) and the lower exhaust pipe (7), and the other end of the aerosol sampling head (8) is connected with a joint of a three-way joint (10) through an exhaust pipe (9), the other two joints of the three-way joint (10) are respectively connected with a vacuum pressure gauge (11) and a flow meter (12), the flow meter (12) is connected with a vacuum pump (13), the flow meter (12) is connected with a flow monitor (14), and a dredging structure communicated with the aerosol sampling head (8) is installed on the sampling box (1) to dredge the aerosol sampling head (8); vacuum pressure table (11), flow monitor (14) and vacuum pump (13) all with controller electric connection, vacuum pressure table (11), flow monitor (14) and controller (15) are installed on the control panel of chamber door (2).
2. The sampling device capable of collecting radioactive aerosol according to claim 1, wherein the dredging structure comprises an air compressor (16) installed at the top of the sampling box (1), the output end of the air compressor (16) is connected with a dredging pipe (17), the dredging pipe (17) sequentially penetrates through the surfaces of the sampling box (1) and the support plate (3) and extends to the bottom of the sampling box (1), a sealing plug is arranged at one end of the dredging pipe (17) far away from the air compressor (16), and an air duct (18) communicated with the upper exhaust pipe (6) and the lower exhaust pipe (7) is arranged on the dredging pipe (17).
3. The sampling device for collecting radioactive aerosol as claimed in claim 2, wherein the dredging pipe (17) is provided with a flow regulating valve (19) and an electrically controlled pneumatic valve (20) outside the sampling box (1) for controlling the flow of the dredging pipe (17) and closing the same.
4. The sampling device for collecting radioactive aerosol according to claim 2, wherein the air guide tube (18) is provided with a one-way valve (21), and the air outlet end of the air guide tube (18) is perpendicular to the cross section of the upper air exhaust tube (6) and the lower air exhaust tube (7).
5. The sampling device capable of collecting radioactive aerosol as claimed in claim 1, wherein the top end of the aerosol sampling head (8) is provided with a connector (22) which is in threaded fit with the upper exhaust pipe (6) and the lower exhaust pipe (7), and the bottom end of the aerosol sampling head (8) is provided with a quick connector (23) which is detachably connected with the exhaust pipe (9).
6. The sampling device for collecting radioactive aerosol according to claim 5, wherein a sampler mounting plate (24) is arranged in the aerosol sampling head (8), a plurality of particle size measuring samplers (25) and a plurality of TSP samplers (26) are arranged on the sampler mounting plate (24), and the particle size measuring samplers (25) are arranged at the outer edge of the TSP samplers (26) and are uniformly arranged in a ring shape.
7. The sampling device of claim 6, wherein the granulometry sampler (25) is a serial impact sampler and the TSP sampler (26) is a mass flow sampler or a medium flow sampler.
8. A sampling device for collecting radioactive aerosols as claimed in claim 1 wherein a solenoid valve (27) is provided between the aerosol sampling head (8) and the tee fitting (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122652821.1U CN217059549U (en) | 2021-11-02 | 2021-11-02 | Sampling device capable of collecting radioactive aerosol |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122652821.1U CN217059549U (en) | 2021-11-02 | 2021-11-02 | Sampling device capable of collecting radioactive aerosol |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217059549U true CN217059549U (en) | 2022-07-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122652821.1U Active CN217059549U (en) | 2021-11-02 | 2021-11-02 | Sampling device capable of collecting radioactive aerosol |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217059549U (en) |
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2021
- 2021-11-02 CN CN202122652821.1U patent/CN217059549U/en active Active
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