CN207502122U - A kind of tracer multiple spot ascending pipe for core air cleaning system - Google Patents
A kind of tracer multiple spot ascending pipe for core air cleaning system Download PDFInfo
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- CN207502122U CN207502122U CN201720715554.9U CN201720715554U CN207502122U CN 207502122 U CN207502122 U CN 207502122U CN 201720715554 U CN201720715554 U CN 201720715554U CN 207502122 U CN207502122 U CN 207502122U
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- tracer
- ascending pipe
- multiple spot
- cleaning system
- air cleaning
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Abstract
The utility model discloses a kind of tracer multiple spot ascending pipe for core air cleaning system, it is provided at least two injection holes on the ascending pipe, the angle of the opening direction of the injection hole and the flow direction of air-flow to be implanted is into 80 100 degree.The utility model is designed using the trepanning of porous ascending pipe, and injection hole multiple spot on small chamber cross-section is enable to inject sample, accelerates the diffusion of tracer in a fluid, improves mixing efficiency；Also, multiple injection holes perpendicular to the direction of fluid to be implanted can when ensure fluid to be implanted do not influence tracer injection while tracer disperse as possible in a fluid, improve tracer dispersion effect.
Description
Technical field
The utility model belongs to nuclear industry technical field, and in particular to a kind of tracer for core air cleaning system is more
Point ascending pipe.
Background technology
At present, in the nuclear facilities workshop such as nuclear industry, nuclear power station, research reactor, reprocessing plant, medical department and scientific research institutions
Set up free gas cleaning system, for prevent the gaseous states radioactive substance such as radioiodide enter yard in one's power (or) ring
Border air, so as to ensure the staff into workshop and the safety of ambient enviroment.
To ensure the reliability service of air cleaning system, it is necessary to carry out the debugging test of high efficiency particulate air filter and iodine adsorber
And periodically field test whether to evaluate high efficiency particulate air filter and iodine adsorber in the normal condition for meeting design requirement.Efficient mistake
Filter and the method for the injection of iodine adsorber field test generally use single-point and single-point sampling are represented to ensure that single-point sampling has
Property, it needs to ensure that tracer has been uniformly mixed with air before sampled point is reached, for this purpose, being considered as first by tracer decanting point
The filter row enough distant places in upstream are located at, and sampled upstream point is then arranged as close to filter, sampled downstream point is then far from mistake
Filter is arranged.If the distance of decanting point and sampled upstream point reaches 10 times of pipe diameter or more, generally it can be thought that reaching single
Mixture homogeneity needed for point sampling.
In the field test for carrying out high efficiency particulate air filter and the detection of iodine adsorber slip, tracer injects uniform
Property, stability and the representativeness of sampling are that test data is accurately and reliably crucial.However, some air cleaning systems are due to workshop
When space limitation, compact in design or connected multi-stage, efficient filter or iodine adsorber are arranged, the distance of decanting point and sampled point compared with
Closely, it is not achieved 10 times or more of pipe diameter, the tracer of single-point injection can not be uniformly mixed before sampled point, it is difficult to get
Representative sample.
Utility model content
Core air purification is used for for the problems of in the prior art, the purpose of this utility model is to provide one kind
The tracer multiple spot ascending pipe of system is adsorbed for China's nuclear facilities Art section air cleaning system high efficiency particulate air filter and iodine
The problem of device field test single-point injection tracer is difficult to reach mixing uniformity solves single-point injection tracer mixing uniformity
The problem of.
To reach above-mentioned purpose of utility model, the technical solution of the utility model is as follows：
A kind of tracer multiple spot ascending pipe for core air cleaning system is provided at least two notes on the ascending pipe
Enter hole, the angle of the opening direction of the injection hole and the flow direction of air-flow to be implanted is into 80-100 degree.
Further, the above-mentioned tracer multiple spot ascending pipe for core air cleaning system, the injection hole point two rows are set
Be placed on the ascending pipe, two rows of injection holes respectively with projection join line of the ascending pipe axis on the tube section of ascending pipe into
160-200°。
Further, the above-mentioned tracer multiple spot ascending pipe for core air cleaning system, the aperture of the injection hole is
0.5-5mm。
Further, the above-mentioned tracer multiple spot ascending pipe for core air cleaning system, the aperture of the injection hole is
2mm。
Further, the above-mentioned tracer multiple spot ascending pipe for core air cleaning system, the gross area of the injection hole
1.15-1.45 times of line cross section where the injection hole.
Further, the above-mentioned tracer multiple spot ascending pipe for core air cleaning system, the specification of the ascending pipe are
Φ 6- Φ 32mm, length are matched with equipment size to be implanted.
Further, the above-mentioned tracer multiple spot ascending pipe for core air cleaning system, the ascending pipe are sanitation-grade
Stainless steel tube.
Further, the above-mentioned tracer multiple spot ascending pipe for core air cleaning system, the tracer multiple spot injection
Pipe is connect by ferrule fitting with sampling system.
The utility model has the advantages that：
The utility model is designed using the trepanning of porous ascending pipe, and injection hole multiple spot on small chamber cross-section is enable to inject
Sample accelerates the diffusion of tracer in a fluid, improves mixing efficiency；Also, multiple injection holes are perpendicular to fluid to be implanted
Direction can when ensure fluid to be implanted do not influence tracer injection while tracer disperse as possible in a fluid, improve tracer
Agent dispersion effect.
Description of the drawings
Fig. 1 is structure diagram of the utility model for the tracer multiple spot ascending pipe of core air cleaning system.
In above-mentioned attached drawing, 1, injection hole；2nd, injection hole；3rd, ascending pipe.
Specific embodiment
The utility model is described in detail with reference to the accompanying drawings and examples.
As shown in Figure 1, the utility model discloses a kind of tracer multiple spot ascending pipe for core air cleaning system, institute
It states and at least two injection holes (1,2) is provided on ascending pipe 3, the flowing side of the opening direction of the injection hole and air-flow to be implanted
To angle into 80-100 degree, preferably 90 °.In this way, when ascending pipe 3 is in fluid to be implanted, the tracer in ascending pipe 3
Can be along injection hole (1,2) into fluid, since the ascending pipe of the utility model is provided with injection hole at least two, tracer can
Fluid is injected from multiple orientation, adds in the mixing of tracer and fluid.Multiple injection holes are perpendicular to the direction energy of fluid to be implanted
Ensure that tracer disperses in a fluid, to improve tracer dispersion as possible while fluid to be implanted does not influence tracer injection when enough
Effect.
Further, it is described to be set on the ascending pipe using hole point two rows, two rows of injection holes respectively with ascending pipe
Projection join line of the axis on the tube section of ascending pipe into 160-200 degree, preferably 180 °, the aerosol of injection by injection hole to
Both sides spray, and aerosol is maximum with air-flow mixed area, can be within the shortest time so that the aerosol of injection is mixed with air-flow
Uniformly.In Fig. 1, injection hole 1 and injection hole 2 are belonging respectively to two rows of injection holes, and injection hole 1 arrives the line and note of ascending pipe axis
The line for entering hole 2 to ascending pipe axis is projected on same tube section, and the angle of two lines is 180 °.
In the embodiment shown in fig. 1, the aperture of the injection hole can be 0.5-5mm, preferably 2.0mm.The note
Enter 1.15-1.45 times of the gross area in hole for injection hole place line cross section.The specification of the ascending pipe is Φ 6- Φ
32mm, length are matched with equipment size to be implanted, 16 × 1.5mm of preferred Φ in the present embodiment.The ascending pipe 3 for sanitation-grade not
Become rusty steel pipe, and inner wall smooth can reduce the loss of tracer sampling to greatest extent, must burr removing hangnail after injection hole opens up.
In use, the tracer multiple spot ascending pipe is connect by ferrule fitting with tracer injected system, come from
The tracer of tracer injected system enters ascending pipe by ferrule fitting and injects air-flow by injection hole.
The ascending pipe of the utility model is not in the case where changing original core air cleaning system agent structure, by showing
The rational design of track agent filling line trepanning, makes tracer be dispersed in fluid to be implanted.
It is two examples using the utility model ascending pipe below：
Example 1
Certain nuclear power station air cleaning system 30KLC11 is equipped with two-stage high efficiency particulate air filter framed bent, according to nuclear safety codes and core
The regulation of professional standard need to measure the slip of every level-one high efficiency particulate air filter row.
The size arranged according to high efficiency particulate air filter, it may be determined that the length of tracer multiple spot ascending pipe, the number of openings, open pore size
With trepanning spacing.After installing multiple spot ascending pipe, it is according to the result measured by ASME N509 code tests：High efficiency particulate air filter
The maximum deviation of the concentration value of any point and average value is 8.6% before framed bent, less than the requirement of average value ± 20%, the tracer
The design of multiple spot ascending pipe is qualified.
Example 2
Certain Nuclear Power Station air cleaning system 40KLC11 is equipped with two-stage high efficiency particulate air filter framed bent, according to nuclear safety codes and
The regulation of core professional standard need to measure the slip of every level-one high efficiency particulate air filter row.
The size arranged according to high efficiency particulate air filter, it may be determined that the length of tracer multiple spot ascending pipe, the number of openings, open pore size
With trepanning spacing.After installing multiple spot ascending pipe, it is according to the result measured by ASME N509 testing standards：High efficiency particulate air filter
The maximum deviation of the concentration value of any point and average value is 6.9% before framed bent, less than the requirement of average value ± 20%, the tracer
The design of multiple spot ascending pipe is qualified.
Obviously, those skilled in the art can carry out the utility model various modification and variations without departing from this practicality
Novel spirit and scope.In this way, if the utility model claims are belonged to these modifications and variations of the present invention
And its within the scope of equivalent technology, then the utility model is also intended to include these modifications and variations.
Claims (8)
1. a kind of tracer multiple spot ascending pipe for core air cleaning system, it is characterised in that：It is set on the ascending pipe (3)
There are at least two injection holes (1,2), the angle of the opening direction of the injection hole and the flow direction of air-flow to be implanted is into 80-
100 degree.
2. it to be used for the tracer multiple spot ascending pipe of core air cleaning system as described in claim 1, it is characterised in that：The note
Enter hole (1,2) point two rows to be set on the ascending pipe (3), two rows of injection holes are respectively with ascending pipe axis in ascending pipe
Projection join line on tube section is into 160-200 °.
3. it to be used for the tracer multiple spot ascending pipe of core air cleaning system as claimed in claim 1 or 2, it is characterised in that：Institute
The aperture for stating injection hole is 0.5-5mm.
4. it to be used for the tracer multiple spot ascending pipe of core air cleaning system as claimed in claim 3, it is characterised in that：The note
The aperture for entering hole is 2.0mm.
5. it to be used for the tracer multiple spot ascending pipe of core air cleaning system as claimed in claim 1 or 2, it is characterised in that：Institute
State 1.15-1.45 times of the gross area of injection hole for injection hole place line cross section.
6. it to be used for the tracer multiple spot ascending pipe of core air cleaning system as claimed in claim 5, it is characterised in that：The note
The specification for entering pipe is Φ 6- Φ 32mm, and length is matched with equipment size to be implanted.
7. it to be used for the tracer multiple spot ascending pipe of core air cleaning system as claimed in claim 1 or 2, it is characterised in that：Institute
Ascending pipe is stated as sanitation-grade stainless steel tube.
8. it to be used for the tracer multiple spot ascending pipe of core air cleaning system as claimed in claim 1 or 2, it is characterised in that：Institute
Tracer multiple spot ascending pipe is stated to connect with sampling system by ferrule fitting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720715554.9U CN207502122U (en) | 2017-06-20 | 2017-06-20 | A kind of tracer multiple spot ascending pipe for core air cleaning system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720715554.9U CN207502122U (en) | 2017-06-20 | 2017-06-20 | A kind of tracer multiple spot ascending pipe for core air cleaning system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207502122U true CN207502122U (en) | 2018-06-15 |
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ID=62497337
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720715554.9U Active CN207502122U (en) | 2017-06-20 | 2017-06-20 | A kind of tracer multiple spot ascending pipe for core air cleaning system |
Country Status (1)
| Country | Link |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110057416A (en) * | 2019-03-28 | 2019-07-26 | 中国辐射防护研究院 | A kind of measurement method and system of air exchange amount |
-
2017
- 2017-06-20 CN CN201720715554.9U patent/CN207502122U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110057416A (en) * | 2019-03-28 | 2019-07-26 | 中国辐射防护研究院 | A kind of measurement method and system of air exchange amount |
| CN110057416B (en) * | 2019-03-28 | 2020-12-18 | 中国辐射防护研究院 | Method and system for measuring air exchange capacity |
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