CN211374197U

CN211374197U - Closed sampler

Info

Publication number: CN211374197U
Application number: CN201922493653.9U
Authority: CN
Inventors: 黄宸烨; 李家滨; 黄震; 刘兴新; 李明春
Original assignee: Jinan Dongfang Taiwei Mechanical Equipment Co ltd
Current assignee: Jinan Dongfang Taiwei Mechanical Equipment Co ltd
Priority date: 2019-12-31
Filing date: 2019-12-31
Publication date: 2020-08-28
Anticipated expiration: 2029-12-31

Abstract

The utility model discloses a closed sampler belongs to the sampler field, its include the circulating line and with the sample pipeline of circulating line intercommunication, sample pipeline both ends are respectively in the circulating line intercommunication, the sample pipeline is including the sample steel bottle, sample steel bottle both ends communicate respectively has the sample to advance the pipe and sample the exit tube, sample exit tube and sample advance the pipe and keep away from sample steel bottle one end all with sample pipeline intercommunication. The utility model discloses have the effect that reduces sample steel bottle internal pressure.

Description

Closed sampler

Technical Field

The utility model relates to a sampler technical field, more specifically says, it relates to a closed sampler.

Background

In the petrochemical industry, because the liquid in the pipeline needs to be detected, the liquid in the conveying pipeline needs to be sampled. A sampler, which is a sampling device for collecting liquid in a pipeline to facilitate sampling and testing of the liquid in the pipeline, is generally installed in advance on the pipeline.

At present, chinese utility model patent with publication number CN202351087U discloses a flammable and combustible toxic medium constant temperature airtight sample thief, include and install feeding root valve and feed back root valve respectively at sampling medium pipeline both ends, feeding root valve has the sample steel bottle through self-closing sealing joint intercommunication, and feed back root valve is connected with self-closing sealing joint with the sample steel bottle.

The above prior art solutions have the following drawbacks: sample steel bottle lug connection is in the pipeline, and the pressure in the sample steel bottle is the same with the pressure in the body, and when liquid pressure was too big in the pipeline, can make sample steel bottle pressure too big, probably has the potential safety hazard when taking out liquid sample in the steel bottle from the sample.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a closed sampler, which aims to reduce the pressure in the sampling steel cylinder.

The above object of the present invention can be achieved by the following technical solutions: the utility model provides a closed sampler, includes circulating line and with the sample pipeline of circulating line intercommunication, sample pipeline both ends are respectively in the circulating line intercommunication, the sample pipeline is including the sample steel bottle, sample steel bottle both ends communicate respectively has the sample to advance the pipe and take a sample exit tube, the sample exit tube advances the pipe with the sample and keeps away from sample steel bottle one end all with sample pipeline intercommunication.

Through adopting above-mentioned technical scheme, because the sample pipeline has carried out the partial pressure to circulating line, so the hydraulic pressure in the sample pipeline is less than the pressure of circulating line import department and exit to the liquid sample pressure that the sample steel bottle drawed is also less, has reduced the potential safety hazard when taking out liquid sample in the steel bottle of will taking a sample.

The present invention may be further configured in a preferred embodiment as: the circulating pipeline comprises a booster pump, a liquid inlet pipe is communicated with an inlet of the booster pump, a liquid outlet pipe is communicated with an outlet of the booster pump, an air-vent valve is communicated with the liquid inlet pipe, and a sampling inlet pipe and a sampling outlet pipe are connected to the liquid inlet pipe and located between the air-vent valve and the booster pump.

By adopting the technical scheme, the pressure of the liquid inlet pipe is reduced by the pressure regulating valve, and then the pressure of the liquid outlet pipe is increased by the booster pump, so that the liquid sample flows back to the conveying pipeline. Therefore, the liquid sample can flow in the circulating pipeline in a one-way mode, the pressure of the liquid inlet pipe is reduced, and the sampling pipeline obtains the sample hydraulic pressure with smaller pressure.

The present invention may be further configured in a preferred embodiment as: the governing valve is installed to the feed liquor pipe, the governing valve is located the sample and advances between the tie point of pipe and feed liquor pipe and the tie point of sample exit tube and feed liquor pipe.

Through adopting above-mentioned technical scheme, adjust the pressure in the sample steel bottle through the governing valve.

The present invention may be further configured in a preferred embodiment as: one end of the liquid inlet pipe and one end of the liquid outlet pipe, which are far away from the booster pump, are communicated with a first switch valve.

Through adopting above-mentioned technical scheme, realized the intercommunication and close of sampler and pipeline through first ooff valve.

The present invention may be further configured in a preferred embodiment as: the liquid inlet pipe is communicated with a purging pipe through a three-way valve, and the liquid outlet pipe is communicated with a torch pipe through a three-way valve.

By adopting the technical scheme, the purging pipe can be communicated with a pressure gas source, the purging pipe is communicated with the liquid inlet pipe by using the three-way valve, residual liquid in the circulating pipeline and the sampling pipeline is blown into the torch pipe, the torch pipe is communicated with the torch, residual waste liquid is ignited, and the cleaning of the residual liquid in the sampler is realized.

The present invention may be further configured in a preferred embodiment as: the sampling steel cylinder comprises a cylinder body, and two ends of the cylinder body are communicated with a second switch valve.

By adopting the technical scheme, after the sample liquid passes through the bottle body, the bottle body is closed when the two second switch valves are closed, and finally the sampling steel bottle is detached from the circulating pipeline.

The present invention may be further configured in a preferred embodiment as: and one ends of the two second switch valves, which are far away from the bottle body, are respectively communicated with the sampling outlet pipe and the sampling inlet pipe through arranging self-closing sealing joints.

Through adopting above-mentioned technical scheme, made things convenient for the dismantlement of bottle.

The present invention may be further configured in a preferred embodiment as: the sampling inlet pipe and the sampling outlet pipe are both metal hoses.

Through adopting above-mentioned technical scheme, further made things convenient for the dismantlement of bottle.

To sum up, the utility model discloses a following at least one useful technological effect:

firstly, because the sampling pipeline divides the pressure of the circulating pipeline, the hydraulic pressure in the sampling pipeline is less than the pressure at the inlet and the outlet of the circulating pipeline, so that the pressure of a liquid sample extracted from a sampling steel cylinder is lower, and the potential safety hazard when the liquid sample in the sampling steel cylinder is taken out is reduced;

and secondly, the liquid inlet pipe is communicated with the purging pipe through a three-way valve, the liquid outlet pipe is communicated with a torch pipe through the three-way valve, the purging pipe can be communicated with a pressure gas source, the purging pipe is communicated with the liquid inlet pipe through the three-way valve, residual liquid in the circulating pipeline and the sampling pipeline is blown into the torch pipe, the torch pipe is communicated with the torch, residual waste liquid is ignited, and the residual liquid in the sampler is cleaned.

Thirdly, the pressure of the liquid inlet pipe is reduced by the pressure regulating valve, and then the pressure of the liquid outlet pipe is increased by the booster pump, so that the liquid sample flows back to the conveying pipeline. Therefore, the liquid sample can flow in the circulating pipeline in a one-way mode, the pressure of the liquid inlet pipe is reduced, and the sampling pipeline obtains the sample hydraulic pressure with smaller pressure.

Drawings

Fig. 1 is a schematic diagram of the piping connection according to the present embodiment.

Reference numerals: 100. a circulation line; 101. a booster pump; 102. a liquid inlet pipe; 103. a liquid outlet pipe; 104. a pressure regulating valve; 105. a first on-off valve; 106. a three-way valve; 107. a purge tube; 108. a torch tube; 200. a sampling pipeline; 201. sampling a steel cylinder; 202. sampling and feeding the tube; 203. sampling and discharging a pipe; 204. adjusting a valve; 205. a bottle body; 206. a second on-off valve; 207. self-closing sealing joints.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Example (b): as shown in fig. 1, a closed sampler disclosed in the present invention includes a circulation pipeline 100 and a sampling pipeline 200 communicated with the circulation pipeline 100.

As shown in fig. 1, the circulation line 100 includes a booster pump 101, an inlet pipe 102, and an outlet pipe 103. The liquid inlet pipe 102 is connected to an inlet of the booster pump 101, and the liquid inlet pipe 102 is communicated with a pressure regulating valve 104. The liquid outlet pipe 103 is communicated with the outlet of the booster pump 101. The ends of the liquid inlet pipe 102 and the liquid outlet pipe 103 far from the booster pump 101 are communicated with a pipeline for conveying petrochemical liquid. The ends of the liquid inlet pipe 102 and the liquid outlet pipe 103 far away from the booster pump 101 are communicated with a first switch valve 105, and the first switch valve 105 is used for controlling the connection and disconnection of the circulation pipeline 100 and the conveying pipeline.

As shown in fig. 1, the sampling pipeline 200 is connected to the liquid inlet pipe 102, and a liquid sample is obtained through the liquid inlet pipe 102. The pressure of the liquid inlet pipe 102 is reduced by the pressure regulating valve 104, and then the pressure of the liquid outlet pipe 103 is increased by the booster pump 101, so that the liquid sample flows back to the conveying pipeline. The pressure of the liquid inlet pipe 102 is reduced while the liquid sample flows in the circulation pipeline 100 in a one-way mode, and the sampling pipeline 200 obtains the sample hydraulic pressure with lower pressure.

As shown in fig. 1, the sampling line 200 includes a sampling cylinder 201, a sampling inlet pipe 202, and a sampling outlet pipe 203. The one end of the sampling inlet pipe 202 and the sampling outlet pipe 203 are both communicated with the liquid inlet pipe 102, and the ends of the sampling inlet pipe 202 and the sampling outlet pipe 203 far away from the liquid inlet pipe 102 are respectively communicated with the two ends of the sampling steel cylinder 201. The liquid inlet pipe 102 is provided with a regulating valve 204, the sampling inlet pipe 202 and the sampling outlet pipe 203 are respectively communicated with two ends of the first regulating valve 204, and the pressure of the liquid entering the sampling pipeline 200 can be regulated by the first regulating valve 204.

As shown in fig. 1, the sampling cylinder 201 includes a cylindrical body 205, and second open/close valves 206 are connected to both ends of the body 205. After the sample liquid passes through the vial 205, the two second on-off valves 206 are closed to close the vial 205, and finally the sampling cylinder 201 is detached from the circulation line 100. In order to facilitate the installation and the disassembly of the sampling steel cylinder 201, the sampling inlet pipe 202 and the sampling outlet pipe 203 are both metal hoses and are both communicated with the sampling inlet pipe 202 and the sampling outlet pipe 203 respectively through a self-closing sealing joint 207.

As shown in fig. 1, in order to facilitate cleaning of the circulation line 100, the liquid inlet pipe 102 is connected to the purge pipe 107 via the three-way valve 106, and the liquid outlet pipe 103 is connected to the torch pipe 108 via the three-way valve 106. The purge line 107 may be in communication with a pressurized air source, which may be an air compressor. The purge pipe 107 is connected to the liquid inlet pipe 102 by the three-way valve 106, the liquid remaining in the circulation pipe 100 and the sampling pipe 200 is purged into the flare pipe 108, and the flare pipe 108 is connected to a flare discharge pipe network.

The specific working principle of the example is as follows: because the sampling pipeline 200 divides the pressure of the circulating pipeline 100, the hydraulic pressure in the sampling pipeline 200 is smaller than the pressure at the inlet and the outlet of the circulating pipeline 100, so that the pressure of the liquid sample extracted by the sampling steel cylinder 201 is smaller, and the potential safety hazard when the liquid sample in the sampling steel cylinder 201 is taken out is reduced.

When sampling, the first switch valve 105 is opened to allow the liquid in the delivery pipe to enter the circulation line 100. The liquid is reduced in pressure by the regulator valve 204, increased in pressure by the booster pump 101, and then returned to the delivery line. The liquid inlet pipe 102 is at the bottom of the hydraulic pressure between the pressure regulating valve 104 and the booster pump 101. The liquid of lower pressure gets into the sample pipeline to the liquid sample pressure that the sample steel bottle 201 drawed is also smaller, has reduced the potential safety hazard when taking out the liquid sample in the sample steel bottle 201.

The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications to the present embodiment without inventive contribution as required after reading the present specification, but all of them are protected by patent laws within the scope of the claims of the present invention.

Claims

1. A closed sampler, characterized in that: including circulating line (100) and with sampling pipeline (200) of circulating line (100) intercommunication, sampling pipeline (200) both ends communicate in circulating line (100) respectively, sampling pipeline (200) are including sample steel bottle (201), sample steel bottle (201) both ends communicate respectively to have the sample to advance pipe (202) and sample exit tube (203), sample exit tube (203) and sample advance pipe (202) keep away from sample steel bottle (201) one end all with sampling pipeline (200) intercommunication.

2. A hermetic sampler according to claim 1, characterized in that: the circulating pipeline (100) comprises a booster pump (101), an inlet of the booster pump (101) is communicated with a liquid inlet pipe (102), an outlet of the booster pump (101) is communicated with a liquid outlet pipe (103), the liquid inlet pipe (102) is communicated with a pressure regulating valve (104), and a sampling inlet pipe (202) and a sampling outlet pipe (203) are connected to the liquid inlet pipe (102) and located between the pressure regulating valve (104) and the booster pump (101).

3. A hermetic sampler according to claim 2, characterized in that: the liquid inlet pipe (102) is provided with a regulating valve (204), and the regulating valve (204) is positioned between the connection point of the sampling inlet pipe (202) and the liquid inlet pipe (102) and the connection point of the sampling outlet pipe (203) and the liquid inlet pipe (102).

4. A hermetic sampler according to claim 3, characterized in that: one ends, far away from the booster pump (101), of the liquid inlet pipe (102) and the liquid outlet pipe (103) are communicated with a first switch valve (105).

5. A closed sampler according to claim 4, characterized in that: the liquid inlet pipe (102) is communicated with a purging pipe (107) through a three-way valve (106), and the liquid outlet pipe (103) is communicated with a torch pipe (108) through the three-way valve (106).

6. A closed sampler according to claim 5, characterized in that: the sampling steel cylinder (201) comprises a cylinder body (205), and two ends of the cylinder body (205) are communicated with a second switch valve (206).

7. A hermetic sampler as claimed in claim 6, characterized in that: one ends of the two second switch valves (206) far away from the bottle body (205) are respectively communicated with the sampling outlet pipe (203) and the sampling inlet pipe (202) through arranging self-closing sealing joints (207).

8. A hermetic sampler according to claim 7, characterized in that: the sampling inlet pipe (202) and the sampling outlet pipe (203) are both metal hoses.