CN207051052U - A kind of tracer multi-point sampling pipe for core air cleaning system - Google Patents
A kind of tracer multi-point sampling pipe for core air cleaning system Download PDFInfo
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- CN207051052U CN207051052U CN201720715531.8U CN201720715531U CN207051052U CN 207051052 U CN207051052 U CN 207051052U CN 201720715531 U CN201720715531 U CN 201720715531U CN 207051052 U CN207051052 U CN 207051052U
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- sampling pipe
- tracer
- cleaning system
- air cleaning
- thieff hatch
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Abstract
The utility model discloses a kind of tracer multi-point sampling pipe for core air cleaning system, at least two thieff hatch are provided with the sampling pipe, the angle of the opening direction of the thieff hatch and the flow direction of air-flow to be sampled is into 125 145 degree.The utility model is designed using the perforate of porous sampling pipe, thieff hatch is gathered multiple spot sample on small chamber cross-section, improves sample accuracy rate；Also, multiple thieff hatch sample simultaneously to be helped to stir the Radial Flow of fluid to be sampled, tracer can be promoted to be mixed with fluid.
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 sampling pipe.
Background technology
At present, in the nuclear facilities factory building 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 state such as radioiodide radioactive substance enter yard in one's power (or) ring
Border air, so as to ensure the staff into factory building and the safety of surrounding environment.
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, represented to ensure that single-point sampling has
Property is, it is necessary to ensure that tracer has been well mixed with air before sampled point is reached, therefore, being considered as tracer decanting point first
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 away from mistake
Filter is arranged.If the distance of decanting point and sampled upstream point reaches more than 10 times of pipe diameter, generally it can be thought that reaching single
Mixture homogeneity needed for point sampling.
When carrying out the field test of 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 factory building
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, more than 10 times of pipe diameter are not reached, the tracer of single-point injection can not be well mixed before sampled point, it is difficult to get
Representational sample.
Utility model content
For the problems of in the prior art, the purpose of this utility model, which is to provide, a kind of is used for core purification of air
The tracer multi-point sampling pipe of system, 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 multi-point sampling pipe for core air cleaning system, at least two are provided with the sampling pipe and is adopted
Sample hole, the angle of the flow direction of the opening direction of the thieff hatch and air-flow to be sampled is into 125-145 degree.
Further, the above-mentioned tracer multi-point sampling pipe for core air cleaning system, the openings of the thieff hatch
To the angle with the flow direction of air-flow to be sampled in sampling pipe into 135 degree.
Further, the above-mentioned tracer multi-point sampling pipe for core air cleaning system, the thieff hatch are divided to two rows to set
Be placed on the sampling pipe, thieff hatch described in two rows respectively with projection join line of the sampling pipe axis on the tube section of sampling pipe into
70-110°。
Further, the above-mentioned tracer multi-point sampling pipe for core air cleaning system, the aperture of the thieff hatch is
0.5-5mm。
Further, the above-mentioned tracer multi-point sampling pipe for core air cleaning system, the aperture of the thieff hatch is
2mm。
Further, the above-mentioned tracer multi-point sampling pipe for core air cleaning system, the thieff hatch gross area are
1.15-1.45 times of line cross section where the thieff hatch.
Further, the above-mentioned tracer multi-point sampling pipe for core air cleaning system, the specification of the sampling pipe are
Φ 6- Φ 32mm, length match with equipment size to be sampled.
Further, the above-mentioned tracer multi-point sampling pipe for core air cleaning system, the sampling pipe are sanitation-grade
Stainless steel tube.
Further, the above-mentioned tracer multi-point sampling pipe for core air cleaning system, the tracer multi-point sampling
Pipe is connected by ferrule fitting with sampling system.
The utility model has the advantages that：
The utility model is designed using the perforate of porous sampling pipe, thieff hatch is gathered multiple spot on small chamber cross-section
Sample, improve sample accuracy rate；Also, multiple thieff hatch sample simultaneously to be helped to stir the Radial Flow of fluid to be sampled, energy
Enough tracer is promoted to be mixed with fluid.
Brief description of the drawings
Fig. 1 is the structural representation for the tracer multi-point sampling pipe that the utility model is used for core air cleaning system.
In above-mentioned accompanying drawing, 1, thieff hatch；2nd, thieff hatch；3rd, sampling pipe.
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 multi-point sampling pipe for core air cleaning system, institute
State and at least two thieff hatch (1,2) are provided with sampling pipe 3, the flowing side of the opening direction of the thieff hatch and air-flow to be sampled
To angle into 125-145 degree, preferably 135 °.In this way, when sampling pipe 3 is in fluid to be sampled, fluid can be along sampling
Hole (1,2) enters sampling pipe, because sampling pipe of the present utility model is provided with thieff hatch at least two, even if the then tracer in fluid
Agent fails to be sufficiently mixed uniformly with fluid, and sampled result can be also improved from the sample of same runny nose different piece collection to be sampled
Accuracy.Meanwhile sampling helps to stir the Radial Flow of fluid to be sampled multiple thieff hatch simultaneously, can promote tracer
Mixed with fluid.In the present embodiment, the opening of thieff hatch is arranged to air current flow direction to be sampled into 135 degree, on the one hand
Sampling air flow can be made to enter pipe to be sampled and stir air-flow to be sampled, while be unlikely to treat the proper flow of sampling air flow again
Considerable influence is produced, on the other hand can ensure the initial speed that into the air-flow of pipe to be sampled there is part to be flowed along sampling pipe
Degree, for the thieff hatch of vertical open pores, such a thieff hatch is better able to ensure sampling quantity.
Further, the thieff hatch is divided to two rows to be arranged on the sampling pipe, thieff hatch described in two rows respectively with sampling pipe
Projection join line of the axis on the tube section of sampling pipe is into 70-110 °, preferably 90 °, and opening up for angle can be advantageous in air-flow
Aerosol enters sampling pipe by thieff hatch, can reduce gas-flow resistance and be lost with aerosol, guarantee to get representational sample
Product.In Fig. 1, thieff hatch 1 and thieff hatch 2 are belonging respectively to two row's thieff hatch, the line of thieff hatch 1 to sampling pipe axis and sampling
Hole 2 is projected on same tube section to the line of sampling pipe axis, and the angle of two lines is 90 °.
In the embodiment shown in fig. 1, the aperture of the thieff hatch can be 0.5-5mm, preferably 2.0mm.It is described to adopt
The quantity in sample hole (needs inventor for (where the sampling eyelet gross area is generally eyelet 1.15-1.45 times of line cross section)
Supplement line cross section product and the relation of the thieff hatch gross area).The specification of the sampling pipe is Φ 6- Φ 32mm, and length is adopted with waiting
Sample equipment size matches, and is preferably 16 × 1.5mm of Φ in the present embodiment.The sampling pipe 3 is sanitation-grade stainless steel tube, inwall light
It is sliding, the loss of tracer sampling can be reduced to greatest extent, must burr removing hangnail after thieff hatch opens up.
In use, the tracer multi-point sampling pipe is connected by ferrule fitting with sampling system, the air-flow of collection
Sample is analyzed along sampling pipe by ferrule fitting into the sampling system.
Sampling pipe of the present utility model is not in the case where changing original core air cleaning system agent structure, by showing
The rational design of track agent sample lines perforate, enables sample lines uniformly to take representational sample on small chamber cross-section
Product.
It is two examples using the utility model sampling pipe below：
Example 1
Certain nuclear power station air cleaning system 30KLC41 is provided with two-stage high efficiency particulate air filter framed bent, according to nuclear safety codes and core
The regulation of professional standard, the slip of every one-level high efficiency particulate air filter row need to be measured.
According to high efficiency particulate air filter arrange size, can confirm tracer multi-point sampling length of tube, the number of openings, open pore size and
Perforate spacing.After installing multi-point sampling pipe, it is according to the result measured by ASME N509 code tests：It is artificial for 10
Leakage point, multi-point sampling pipe survey tracer concentration be well mixed with tracer a little survey concentration maximum deviation be 4.6%, it is small
In the requirement of average value ± 5.0%, it was demonstrated that tracer multi-point sampling pipe design is qualified.
Example 2
Certain Nuclear Power Station air cleaning system 40KLC41 is provided with two-stage high efficiency particulate air filter framed bent, according to nuclear safety codes and
The regulation of core professional standard, the slip of every one-level high efficiency particulate air filter row need to be measured.
The size arranged according to high efficiency particulate air filter, it may be determined that the length of tracer multi-point sampling pipe, the number of openings, open pore size
With perforate spacing.After installing multi-point sampling pipe, it is according to the result measured by ASME N509 code tests：For 10 people
Work leakage point, multi-point sampling pipe survey tracer concentration be well mixed with tracer a little survey concentration maximum deviation be 3.9%,
Less than the requirement of average value ± 5.0%, tracer multi-point sampling pipe design is qualified.
Obviously, those skilled in the art can carry out various changes and modification without departing from this practicality to the utility model
New spirit and scope.So, if belonging to the utility model claims to these modifications and variations of the present utility model
And its within the scope of equivalent technology, then the utility model is also intended to comprising including these changes and modification.
Claims (9)
- A kind of 1. tracer multi-point sampling pipe for core air cleaning system, it is characterised in that：Set on the sampling pipe (3) There are at least two thieff hatch (1,2), the angle of the opening direction of the thieff hatch and the flow direction of air-flow to be sampled is into 125- 145 degree.
- 2. it is used for the tracer multi-point sampling pipe of core air cleaning system as claimed in claim 1, it is characterised in that：It is described to adopt The angle of the flow direction of air-flow to be sampled is into 135 degree in the opening direction and sampling pipe in sample hole (1,2).
- 3. it is used for the tracer multi-point sampling pipe of core air cleaning system as claimed in claim 1 or 2, it is characterised in that：Institute Stating thieff hatch (1,2) is divided to two rows to be arranged on the sampling pipe (3), and thieff hatch is sampling with sampling pipe axis respectively described in two rows Projection join line on the tube section of pipe is into 70-110 °.
- 4. it is used for the tracer multi-point sampling pipe of core air cleaning system as claimed in claim 1 or 2, it is characterised in that：Institute The aperture for stating thieff hatch is 0.5-5mm.
- 5. it is used for the tracer multi-point sampling pipe of core air cleaning system as claimed in claim 4, it is characterised in that：It is described to adopt The aperture in sample hole is 2mm.
- 6. it is used for the tracer multi-point sampling 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 that the thieff hatch gross area is line cross section where the thieff hatch.
- 7. it is used for the tracer multi-point sampling pipe of core air cleaning system as claimed in claim 6, it is characterised in that：It is described to adopt The specification of sample pipe is Φ 6- Φ 32mm, and length matches with equipment size to be sampled.
- 8. it is used for the tracer multi-point sampling pipe of core air cleaning system as claimed in claim 1 or 2, it is characterised in that：Institute It is sanitation-grade stainless steel tube to state sampling pipe.
- 9. it is used for the tracer multi-point sampling pipe of core air cleaning system as claimed in claim 1 or 2, it is characterised in that：Institute Tracer multi-point sampling pipe is stated to be connected with sampling system by ferrule fitting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720715531.8U CN207051052U (en) | 2017-06-20 | 2017-06-20 | A kind of tracer multi-point sampling pipe for core air cleaning system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720715531.8U CN207051052U (en) | 2017-06-20 | 2017-06-20 | A kind of tracer multi-point sampling pipe for core air cleaning system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207051052U true CN207051052U (en) | 2018-02-27 |
Family
ID=61494059
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720715531.8U Active CN207051052U (en) | 2017-06-20 | 2017-06-20 | A kind of tracer multi-point sampling pipe for core air cleaning system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207051052U (en) |
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2017
- 2017-06-20 CN CN201720715531.8U patent/CN207051052U/en active Active
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