CN204924744U - Low negative pressure gas sampling device - Google Patents
Low negative pressure gas sampling device Download PDFInfo
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- CN204924744U CN204924744U CN201520596762.2U CN201520596762U CN204924744U CN 204924744 U CN204924744 U CN 204924744U CN 201520596762 U CN201520596762 U CN 201520596762U CN 204924744 U CN204924744 U CN 204924744U
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Abstract
The utility model discloses a low negative pressure gas sampling device belongs to test analytique equipment technical field. The utility model discloses a bladder and the perpendicular syringe that sets up on the sample channel that are linked together with the sample channel, advance first check valve and second check valve that kind pipe inner wall was equipped with free switching, the syringe is located the sample channel between first check valve and the second check valve. The utility model provides a sampling device can take a sample in reaction tower and pipeline on convenience ground, and smooth the completion is taken a sample under being applicable to low pressure, negative pressure, and reaches a large amount of samples through taking out repeatedly to press, has solved traditional sampling device is difficult to the sample in low pressure, negative pressure pipeline problem to avoid the sample few, leaded to the analysis not have the representative problem, solved the problem of not getting the gaseous sample in reaction tower and pipeline well simultaneously. The utility model is simple in operation the practicality, the sample is accurate representative, the sample problem of long pipeline when overhauing of having carried solution easy and simple to handle, fine.
Description
Technical field
The utility model relates to a kind of lower negative pressure gas sampling device, belongs to analysis and test device technical field.
Background technology
During the maintenance of workshop pipeline, reaction tower, chemical examination often will coordinate gets gaseous sample analysis, to guarantee the safety of overhauling place, because the position of maintenance is not fixed, and there is no fixing sample tap, usually sample under requiring the condition of or negative pressure lower at pressure when getting gaseous sample, common bladders can only take the gaseous sample under high pressure, single syringe cannot meet the requirement of sampling amount, this sampler not limiting in the pipeline of sampling spot, tower, sample in reactor, and can overcome the problem of low pressure sampling and sampling amount.
Summary of the invention
For the problem that still can sample smoothly under solution low pressure, negative pressure, the utility model provides a kind of lower negative pressure gas sampling device, realizes sampling accurately representative, carries easy and simple to handle.
The utility model is realized by following technical proposal: a kind of lower negative pressure gas sampling device, comprise the bladders be connected with sample channel, it is characterized in that: also comprise the syringe be vertically set on sample channel, and be arranged on the first retaining valve and second retaining valve of the freely openable in sample channel, on the sample channel of syringe between the first retaining valve and the second retaining valve.
Described first retaining valve and the second retaining valve for opening, are closed towards sample channel direction towards bladders direction.
The inlet end of described sample channel increases and decreases length on demand.
During use, be connected to by sample channel inlet end in the environment (as gas piping sample tap etc.) needing sampling, aspirating syringe, now the first one-way valve opens, the second closed check valve, gaseous sample enters in syringe under the draft effect of syringe; Push injection device again, makes the first closed check valve, the second one-way valve opens, and gaseous sample is fed in bladders and completes collection; So by repeatedly taking out the collection of having pressed gas.
The good effect that the utility model possesses: the sampler that the utility model provides can sample easily in reaction tower and pipeline, and complete sampling smoothly under being applicable to low pressure, negative pressure, and reach a large amount of sampling by repeatedly taking out pressure, solve the problem that traditional sampler is difficult to sample in low pressure, negative-pressure pipeline, and it is few to avoid sampling, cause analysis there is no representational problem, solve bad problem of getting gaseous sample in reaction tower and pipeline simultaneously.The utility model practicality simple to operate, samples accurately representative, carries easy and simple to handle, well solves problem of sampling during long pipeline maintenance.
Accompanying drawing explanation
Structural representation when Fig. 1 is lower negative pressure gas sampling device aspirating syringe;
Structural representation when Fig. 2 is lower negative pressure gas sampling device push injection device.
Embodiment
Below in conjunction with embodiment and accompanying drawing, the utility model is described further.
Embodiment 1
As Fig. 1 and 2, lower negative pressure gas sampling device comprises the bladders 2 be connected with sample channel 1 and the syringe 3 be vertically set on sample channel 1, the first retaining valve 4 and the second retaining valve 5 of freely openable is provided with, on the sample channel 1 of syringe 3 between the first retaining valve 4 and the second retaining valve 5 in described sample channel; Described first retaining valve 4 and the second retaining valve 5 for opening, are closed towards sample channel 1 direction towards bladders 2 direction; The inlet end of sample channel 1 is connected with gas sample mouth to be measured, and sample channel 1 increases and decreases length on demand.
During use, sample channel inlet end is connected in the environment (as gas piping sample tap) needing sampling, aspirating syringe 3, now the first retaining valve 4 is opened, and the second retaining valve 5 is closed, and gaseous sample is introduced in syringe 3 under the draft effect of syringe 3, push injection device 3 more afterwards, first retaining valve 4 is closed, and the second retaining valve 5 is opened, and gaseous sample is fed in bladders 2 and completes collection; So by repeatedly taking out the collection of having pressed gas.
Claims (3)
1. a lower negative pressure gas sampling device, comprise the bladders be connected with sample channel, it is characterized in that: also comprise the syringe be vertically set on sample channel, and be arranged on the first retaining valve and second retaining valve of the freely openable in sample channel, on the sample channel of syringe between the first retaining valve and the second retaining valve.
2. lower negative pressure gas sampling device according to claim 1, is characterized in that: described first retaining valve and the second retaining valve for opening, are closed towards sample channel direction towards bladders direction.
3. lower negative pressure gas sampling device according to claim 1 and 2, is characterized in that: the inlet end of described sample channel increases and decreases length on demand.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520596762.2U CN204924744U (en) | 2015-08-10 | 2015-08-10 | Low negative pressure gas sampling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520596762.2U CN204924744U (en) | 2015-08-10 | 2015-08-10 | Low negative pressure gas sampling device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204924744U true CN204924744U (en) | 2015-12-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520596762.2U Active CN204924744U (en) | 2015-08-10 | 2015-08-10 | Low negative pressure gas sampling device |
Country Status (1)
| Country | Link |
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| CN (1) | CN204924744U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112213162A (en) * | 2020-10-30 | 2021-01-12 | 江苏瑞兴环保设备有限公司 | Negative pressure sampler with sample recovery function |
| CN114062056A (en) * | 2021-10-09 | 2022-02-18 | 中核核电运行管理有限公司 | Sampling device suitable for negative pressure and malleation gas pipeline |
-
2015
- 2015-08-10 CN CN201520596762.2U patent/CN204924744U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112213162A (en) * | 2020-10-30 | 2021-01-12 | 江苏瑞兴环保设备有限公司 | Negative pressure sampler with sample recovery function |
| CN114062056A (en) * | 2021-10-09 | 2022-02-18 | 中核核电运行管理有限公司 | Sampling device suitable for negative pressure and malleation gas pipeline |
| CN114062056B (en) * | 2021-10-09 | 2024-03-19 | 中核核电运行管理有限公司 | Sampling device suitable for negative pressure and positive pressure gas pipeline |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |