CN213209651U - Aerosol sampling head for aerosol and iodine sampling instrument - Google Patents
Aerosol sampling head for aerosol and iodine sampling instrument Download PDFInfo
- Publication number
- CN213209651U CN213209651U CN202022173246.2U CN202022173246U CN213209651U CN 213209651 U CN213209651 U CN 213209651U CN 202022173246 U CN202022173246 U CN 202022173246U CN 213209651 U CN213209651 U CN 213209651U
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- China
- Prior art keywords
- cover body
- aerosol
- iodine
- sealing ring
- sampling head
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- Expired - Fee Related
Links
- 229910052740 iodine Inorganic materials 0.000 title claims abstract description 58
- 239000011630 iodine Substances 0.000 title claims abstract description 58
- ZCYVEMRRCGMTRW-UHFFFAOYSA-N 7553-56-2 Chemical compound [I] ZCYVEMRRCGMTRW-UHFFFAOYSA-N 0.000 title claims abstract description 57
- 238000005070 sampling Methods 0.000 title claims abstract description 48
- 239000000443 aerosol Substances 0.000 title claims abstract description 35
- 238000007789 sealing Methods 0.000 claims abstract description 56
- 239000000411 inducer Substances 0.000 claims description 6
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 claims description 4
- 229920002379 silicone rubber Polymers 0.000 claims description 4
- 239000004945 silicone rubber Substances 0.000 claims description 4
- 229910001220 stainless steel Inorganic materials 0.000 claims description 4
- 239000010935 stainless steel Substances 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 3
- 230000006698 induction Effects 0.000 abstract 2
- 230000000694 effects Effects 0.000 description 4
- 230000005855 radiation Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000002285 radioactive effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000006056 electrooxidation reaction Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000000941 radioactive substance Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Images
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- Measurement Of Radiation (AREA)
Abstract
The utility model discloses an aerosol sampling head for aerosol and iodine sampling instrument, which comprises a sampling head body, wherein the sampling head body comprises an upper cover body, a lower cover body, an iodine box and filter paper, the upper cover body is connected with the lower cover body through screw threads, the iodine box and the filter paper are arranged in the space enclosed by the upper cover body and the lower cover body, the upper cover body, still be equipped with sealing washer A in the space that lower lid encloses, sealing washer B, sealing washer A and last lid butt, sealing washer B and lower lid butt, sealing washer A is located to the filter paper clamp, between the sealing washer B, be provided with inlet channel on the last lid, the lid still includes the outlet channel rather than inside intercommunication down, the pressure difference changer, outlet channel is the venturi structure, the venturi structure includes the induction zone, the throat, the export section, the one end and the induction zone intercommunication of pressure difference changer, the other end and throat intercommunication, the air mass flow through the sampling head can accurately be measured to the sampling head body.
Description
Technical Field
The utility model relates to a nuclear radiation protection technical field is an aerosol and iodine sampling instrument aerosol sampling head particularly.
Background
With the development of the national nuclear power industry, more and more nuclear power plants are built successively, and in order to better protect the environment and the public, the influence of the nuclear power plants on the environment and surrounding residents is judged, so that environmental radioactivity monitoring is very necessary. In atmospheric environments and nuclear facility sites, particularly in nuclear accident situations, it is often necessary to sample the atmosphere in the natural environment or site environment for a certain period of time to analyze the activity of radioactive aerosols and gaseous iodine in the environment.
The conventional iodine sampler calculates whether radioactive substances in the atmosphere exceed standards or not according to the measured gas flow volume flowing through the iodine box and the measured iodine content in the iodine box. Therefore, it is critical whether the volume of gas flow through the iodine box can be accurately measured.
SUMMERY OF THE UTILITY MODEL
In view of the above-mentioned shortcomings of the prior art, the present invention is directed to: provided are an aerosol sampling head for an aerosol and iodine sampling instrument, which can calculate the flow rate of gas flowing through an iodine box.
In order to realize the purpose of the utility model, the utility model provides a following technical scheme:
an aerosol sampling head for an aerosol and iodine sampling instrument comprises a sampling head body, wherein the sampling head body comprises an upper cover body, a lower cover body, an iodine box and filter paper, the upper cover body is connected with the lower cover body through threads, the iodine box and the filter paper are arranged in a space defined by the upper cover body and the lower cover body, the iodine box is arranged below the filter paper, the filter paper is used for collecting aerosol in air, and the iodine box is used for collecting gaseous iodine in air;
a sealing ring A and a sealing ring B are further arranged in a space defined by the upper cover body and the lower cover body, the sealing ring A is abutted against the upper cover body, the sealing ring B is abutted against the lower cover body, the filter paper is clamped between the sealing ring A and the sealing ring B, and the sealing ring A and the sealing ring B are used for sealing the junction of the upper cover body and the lower cover body;
go up the lid on be provided with inlet channel, the lid still includes air outlet channel, the pressure differential changer rather than inside intercommunication down, air outlet channel is venturi structure, venturi structure includes inducer, throat, export section, the one end of pressure differential changer with inducer intercommunication, the other end with throat intercommunication.
Further, still include the pressure pad, pressure pad one side with sealing washer B butt, the opposite side with iodine box butt.
Further, the air outlet channel and the lower cover body are integrally formed.
Furthermore, the inside ring boss that still is provided with of lower lid, the top surface level setting of ring boss is used for supporting the iodine box.
Furthermore, the upper cover body and the lower cover body are made of stainless steel materials.
Furthermore, the sealing ring A, the sealing ring B and the pressure pad are all made of phenyl silicone rubber.
Compared with the prior art, the utility model, following beneficial effect has:
1. the air flow passing through the air outlet channel in unit time can be obtained through the Venturi structure of the air outlet channel, meanwhile, the Venturi structure has the advantages of simple structure, convenience in maintenance and stable performance, calculation is accurate, energy consumption is low, and the endurance of the aerosol and iodine sampling instrument can be increased.
Drawings
Fig. 1 is an internal structure diagram of the aerosol sampling head for the aerosol and iodine sampling instrument of the present invention.
List of reference numerals
1-upper cover body, 2-lower cover body, 3-iodine box, 4-pressure pad, 5-sealing ring A, 6-filter paper, 7-circular boss, 8-inlet section, 9-throat section, 10-outlet section, 11-sealing ring B, 12-differential pressure transmitter.
Detailed Description
The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "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 simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, integrally connected, or detachably connected; may be communication within two elements; they may be directly connected or indirectly connected through an intermediate, and those skilled in the art can understand the specific meaning of the above terms in the present invention in specific situations.
As shown in fig. 1, an aerosol sampling head for an aerosol and iodine sampling instrument comprises a sampling head body, wherein the sampling head body comprises an upper cover body 1, a lower cover body 2, an iodine box 3 and a filter paper 6, the upper cover body 1 is connected with the lower cover body 2 through threads, the iodine box 3 and the filter paper 6 are arranged in a space enclosed by the upper cover body 1 and the lower cover body 2, the iodine box 3 is arranged below the filter paper 6, the filter paper 6 is used for collecting aerosol in air, and the iodine box 3 is used for collecting gaseous iodine in air;
a sealing ring A5 and a sealing ring B11 are further arranged in a space enclosed by the upper cover body 1 and the lower cover body 2, the sealing ring A5 is abutted against the upper cover body 1, the sealing ring B11 is abutted against the lower cover body 2, the filter paper 6 is clamped between the sealing ring A5 and the sealing ring B11, and the sealing ring A5 and the sealing ring B11 are used for sealing the junction of the upper cover body 1 and the lower cover body 2;
go up and be provided with inlet channel on the lid 1, lid 2 still includes air outlet channel, differential pressure transmitter 12 rather than inside intercommunication down, air outlet channel is venturi structure, venturi structure includes inducer 8, throat 9, export section 10, differential pressure transmitter 12 one end with inducer 8 intercommunication, the other end with throat 9 intercommunication.
The utility model discloses a theory of operation does: when sampling is needed, the sampling head body sucks air in the external environment through an air inlet channel of the upper cover body 1 of the sampling head body under the action of an aerosol and iodine sampling instrument and discharges the air from an air outlet channel of the lower cover body 2, and when the air passes through the filter paper 6 and the iodine box 3, the filter paper 6 and the iodine box 3 sample the radioactive aerosol and gaseous iodine activity in the external air; according to the working principle of the Venturi tube, when air flows through the air outlet channel, the air is contracted at the throat part 9 of the air outlet channel, so that the air flow rate is increased, the pressure is reduced, the pressure difference is generated between the inlet section 8 and the throat part 9 of the Venturi structure, the pressure difference transmitter 12 converts the pressure difference into an electric signal, and the air flow passing through the air outlet channel in unit time can be obtained accordingly.
When upper cover body 1, lower lid 2 are screwed up, upper cover body 1, lower lid 2 are right sealing washer A5, sealing washer B11 produce the squeezing action, make and to hug closely the inner wall of upper cover body 1, lower lid 2, it is right the juncture of upper cover body 1, lower lid 2 seals, simultaneously, sealing washer A5, sealing washer B11 are still right when pressing from both sides tight filter paper 6 plays the fixed action, prevent filter paper 6 takes place the displacement, influences the sampling effect.
Further, the iodine box further comprises a pressure pad 4, wherein one side of the pressure pad 4 is abutted with the sealing ring B11, and the other side is abutted with the iodine box 3.
Pressure pad 4 is right iodine box 3 plays the positioning action, the utility model discloses in, through reasonable setting sealing washer A5, sealing washer B11, pressure pad 4's thickness makes sealing washer B11 is hugged closely under the pressure action during lid 2 down, pressure pad 4 is in the effect of sealing washer B11 is compressed tightly iodine box 3 makes it be fixed in the space that upper cover body 1, lower lid 2 enclose, prevent that it from taking place to remove, and then lead to the air quantity through iodine box 3 to change.
Further, the air outlet channel and the lower cover body 2 are integrally formed.
There is not connecting gap between integrated into one piece's lower lid 2 and the air outlet channel for the gas tightness between the two is better, makes and works as iodine box 3 is put into wherein the back, only need go up lid 1 with the juncture of lower lid 2 sets up the sealing washer, when having reduced the use cost of device, has improved the degree of accuracy of sampling.
Further, the inside of the lower cover body 2 is also provided with a circular boss 7, and the top surface of the circular boss 7 is horizontally arranged and used for supporting the iodine box 3.
By arranging the circular boss 7, the iodine box 3 is in a horizontal state when the iodine box 3 is placed in the lower cover body 2.
Furthermore, the upper cover body 1 and the lower cover body 2 are made of stainless steel.
The stainless steel material has good chemical corrosion resistance and electrochemical corrosion resistance, is heat-resistant and high-temperature-resistant, is suitable for the working condition that the sampling head body is used outdoors for a long time, and prolongs the service life of the sampling head body.
Furthermore, the sealing ring A5, the sealing ring B11 and the pressure pad 4 are all made of phenyl silicone rubber.
The phenyl silicone rubber has good radiation resistance and high and low temperature resistance, and prevents the flexibility of the sealing ring A5, the sealing ring B11 and the pressure pad 4 from being reduced under the action of radiation, so that the sealing function is ineffective.
The preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, however, the present invention is not limited to the details of the embodiments in the above description, and the technical concept of the present invention can be within the scope of the present invention, and can be modified to various simple modifications, and these simple modifications all belong to the protection scope of the present invention. It should be noted that the various technical features described in the above embodiments can be combined in any suitable manner without contradiction, and in order to avoid unnecessary repetition, the present invention does not need to describe any combination of the features. In addition, various embodiments of the present invention can be combined arbitrarily, and the disclosed content should be regarded as the present invention as long as it does not violate the idea of the present invention.
Claims (6)
1. The utility model provides an aerosol and iodine sampling appearance aerosol sampling head which characterized in that: the sampling head comprises a sampling head body, wherein the sampling head body comprises an upper cover body (1), a lower cover body (2), an iodine box (3) and filter paper (6), the upper cover body (1) is connected with the lower cover body (2) through threads, the iodine box (3) and the filter paper (6) are arranged in a space enclosed by the upper cover body (1) and the lower cover body (2), the iodine box (3) is arranged below the filter paper (6), the filter paper (6) is used for collecting aerosol in the air, and the iodine box (3) is used for collecting gaseous iodine in the air;
a sealing ring A (5) and a sealing ring B (11) are further arranged in a space enclosed by the upper cover body (1) and the lower cover body (2), the sealing ring A (5) is abutted against the upper cover body (1), the sealing ring B (11) is abutted against the lower cover body (2), the filter paper (6) is clamped between the sealing ring A (5) and the sealing ring B (11), and the sealing ring A (5) and the sealing ring B (11) are used for sealing the junction of the upper cover body (1) and the lower cover body (2);
go up and be provided with inlet channel on lid (1), lid (2) still include air outlet channel, differential pressure changer (12) rather than inside intercommunication down, air outlet channel is venturi structure, venturi structure includes inducer (8), throat (9), export section (10), the one end of differential pressure changer (12) with inducer (8) intercommunication, the other end with throat (9) intercommunication.
2. An aerosol sampling head for an aerosol and iodine sampling instrument according to claim 1, wherein: still include pressure pad (4), pressure pad (4) one side with sealing washer B (11) butt, the opposite side with iodine box (3) butt.
3. An aerosol sampling head for an aerosol and iodine sampling instrument according to claim 2, wherein: the air outlet channel and the lower cover body (2) are integrally formed.
4. An aerosol sampling head for an aerosol and iodine sampling instrument according to claim 3, wherein: the iodine box is characterized in that a circular boss (7) is further arranged inside the lower cover body (2), and the top surface of the circular boss (7) is horizontally arranged and used for supporting the iodine box (3).
5. An aerosol sampling head for an aerosol and iodine sampling instrument according to claim 4, wherein: the upper cover body (1) and the lower cover body (2) are made of stainless steel materials.
6. An aerosol sampling head for an aerosol and iodine sampling instrument according to claim 5, wherein: the sealing ring A (5), the sealing ring B (11) and the pressure pad (4) are all made of phenyl silicone rubber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022173246.2U CN213209651U (en) | 2020-09-28 | 2020-09-28 | Aerosol sampling head for aerosol and iodine sampling instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022173246.2U CN213209651U (en) | 2020-09-28 | 2020-09-28 | Aerosol sampling head for aerosol and iodine sampling instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213209651U true CN213209651U (en) | 2021-05-14 |
Family
ID=75823610
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022173246.2U Expired - Fee Related CN213209651U (en) | 2020-09-28 | 2020-09-28 | Aerosol sampling head for aerosol and iodine sampling instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213209651U (en) |
-
2020
- 2020-09-28 CN CN202022173246.2U patent/CN213209651U/en not_active Expired - Fee Related
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210514 |