CN218725657U - Vacuum liquid sampling system - Google Patents
Vacuum liquid sampling system Download PDFInfo
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- CN218725657U CN218725657U CN202222436772.2U CN202222436772U CN218725657U CN 218725657 U CN218725657 U CN 218725657U CN 202222436772 U CN202222436772 U CN 202222436772U CN 218725657 U CN218725657 U CN 218725657U
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Abstract
The utility model relates to a vacuum liquid sampling system, be used for the interior liquid sample of vacuum pipeline, vacuum pipeline has the sampling point, sampling system is including cutting off the ball valve, the plunger type sample valve, the check valve, the nitrogen gas relief pressure valve, the nitrogen gas trip valve, ration jar and sample valve, the ration jar is connected with the sampling point through first pipeline, it all installs on first pipeline to cut off ball valve and plunger type sample valve, the plunger type sample valve is located the one side that cuts off the ball valve and be close to the ration jar, be connected with the lateral duct on the first pipeline between plunger type sample valve and the ration jar, the lateral duct is connected with outside nitrogen gas source, the check valve, the nitrogen gas relief pressure valve, the nitrogen gas trip valve is installed on the lateral duct, be connected with the second pipeline on the ration jar, the one side of keeping away from the ration jar of second pipeline is the sample connection, the sample valve is installed on the second pipeline. The utility model discloses accomplished at every turn the sample and not had liquid to remain, need not to demolish equipment and wash convenient operation.
Description
Technical Field
The utility model relates to a chemical industry technical field especially relates to a vacuum liquid sampling system.
Background
Vacuum rectification is one of separation technologies commonly used in chemical production, and the composition of product components of a rectification tower is an important index for evaluating the rectification effect, so the rectification process often involves the analysis of rectification products, and the important premise for the analysis of the rectification products is accurate sampling. Because the sampling in the vacuum pipeline, the internal pressure of the pipeline is lower than the external atmospheric pressure, and many sampling methods used in the positive pressure pipeline cannot meet the sampling requirement under the vacuum condition.
The invention provides a vacuum sampler provided by the Chinese patent with the publication number of CN209589554U, which comprises a vacuum generator, a sample receiving bottle, a sampling tube, a heavy hammer and a connecting cavity, wherein the connecting cavity is connected with the vacuum generator, one end of the sampling tube is connected with the connecting cavity, the other end of the sampling tube extends into a sampling liquid, a switch valve is arranged on the sampling tube, the lower end of the sampling tube is sleeved with the heavy hammer, the sample receiving bottle is hermetically connected below the connecting cavity, the heavy hammer is immersed into the liquid to be sampled when the vacuum sampler is used for sampling, the vacuum generator is started, then the switch valve is opened, the liquid sample is sucked into the connecting cavity through the sampling tube and is collected in the sample receiving bottle, the sample receiving bottle can measure the volume of the sample, the measurement is completed, the switch valve is closed, and then the sample receiving bottle and the sample are taken.
Above-mentioned vacuum sampler still has some defects, and liquid sample very easily remains in the connecting cavity through connecting the cavity entering and connect the appearance bottle, influences the liquid sample quality of next sample, takes place for avoiding this condition, all need to connect the cavity after taking a sample at every turn and demolish, will connect the cavity sanitization, reinstallate connection cavity before next sample, and the operation is very troublesome, wastes time and energy.
Therefore, the utility model provides a vacuum liquid sampling system solves above-mentioned problem.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is to provide a vacuum liquid sampling system accomplishes to take a sample at every turn and does not have liquid to remain, need not to demolish equipment and washs convenient operation.
In order to solve the technical problem, the utility model adopts the technical scheme that: a vacuum liquid sampling system for sampling liquid in a vacuum pipeline, the vacuum pipeline having a sampling point, the innovation point is as follows: the sampling system comprises a cut-off ball valve, a plunger type sampling valve, a check valve, a nitrogen pressure reducing valve, a nitrogen shut-off valve, a quantitative tank and a sampling valve;
the quantitative tank is connected with a sampling point through a first pipeline, the cut-off ball valve and the plunger type sampling valve are both arranged on the first pipeline, and the plunger type sampling valve is positioned on one side of the cut-off ball valve, which is close to the quantitative tank;
a branch pipeline is connected between the plunger type sampling valve on the first pipeline and the quantitative tank, the branch pipeline is connected with an external nitrogen source, and the check valve, the nitrogen pressure reducing valve and the nitrogen shut-off valve are arranged on the branch pipeline;
the quantitative tank is connected with a second pipeline, one side of the second pipeline, which is far away from the quantitative tank, is a sampling port, and the sampling valve is installed on the second pipeline.
Further, the sampling point extends to 1/3 of the inner diameter of the vacuum pipeline.
Further, the plunger of the plunger-type sampling valve passes through the ball passage of the shut-off ball valve to reach the sampling point.
The utility model has the advantages that:
(1) The utility model discloses after being full of liquid sample in the ration jar, adopt nitrogen gas to impress in the sample bottle of sample connection department with whole liquid sample in the ration jar for no liquid is remained in the ration jar, has accomplished that no liquid of taking a sample at every turn remains, need not to demolish equipment and washs convenient operation.
(2) Because liquid is stable continuous flow in the vacuum pipe, because the viscous action of pipe wall, the liquid of vacuum pipe inside wall department presents the lag state, the utility model discloses a stretch into the 1/3 department of vacuum pipe internal diameter with the sampling point, the liquid flow of this department does not have the lag state, can guarantee the ageing of liquid sample.
(3) The utility model discloses a plunger of plunger type sample valve passes the spheroid passageway that cuts off the ball valve and reachs the sampling point, and the liquid in the plunger type sample valve can be got rid of completely to this setting, eliminates the blind spot and causes the influence to the sample result.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Fig. 1 is a schematic structural diagram of a vacuum liquid sampling system according to the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of the embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
A vacuum liquid sampling system as shown in fig. 1, which is used for sampling liquid in a vacuum pipeline, wherein the vacuum pipeline is provided with a sampling point 1, and the sampling system comprises a cut-off ball valve 2, a plunger type sampling valve 3, a check valve 4, a nitrogen pressure reducing valve 5, a nitrogen cut-off valve 6, a quantitative tank 7 and a sampling valve 8;
the volume of the quantitative tank 7 is a primary sampling amount, the quantitative tank 7 is connected with the sampling point 1 through a first pipeline, the cut-off ball valve 2 and the plunger type sampling valve 3 are both arranged on the first pipeline, and the plunger type sampling valve 3 is positioned on one side of the cut-off ball valve 2 close to the quantitative tank 7; a branch pipeline is connected between the plunger type sampling valve 3 on the first pipeline and the quantitative tank 7, the branch pipeline is connected with an external nitrogen source, the external nitrogen source conveys nitrogen into the branch pipeline, a check valve 4, a nitrogen pressure reducing valve 5 and a nitrogen cut-off valve 6 are arranged on the branch pipeline, the check valve 4 is positioned on one side of the nitrogen pressure reducing valve 5 close to the first pipeline, and the nitrogen cut-off valve 6 is positioned on one side of the nitrogen pressure reducing valve 5 far away from the check valve 4; be connected with the second pipeline on the ration jar 7, one side of keeping away from ration jar 7 of second pipeline is the sample connection, and sample valve 8 installs on the second pipeline.
In the embodiment, because the liquid stably and continuously flows in the vacuum pipeline, the liquid at the inner wall of the vacuum pipeline is in a lagging state due to the viscous action of the pipeline wall, and the timeliness of the liquid sample is ensured by extending the sampling point 1 into 1/3 of the inner diameter of the vacuum pipeline.
The plunger of the plunger type sampling valve 3 penetrates through the ball channel of the cut-off ball valve 2 to reach the sampling point 1, and the arrangement can completely eliminate liquid in the plunger type sampling valve and eliminate the influence of dead zones on sampling results.
The working principle is as follows: during sampling, the nitrogen stop valve 6 and the sampling valve 8 are closed, the cut-off ball valve 2 is opened, the plunger type sampling valve 3 is manually shaken, liquid in the vacuum pipeline flows into the quantifying tank 7 through the first pipeline, after sampling is finished, the plunger type sampling valve 3 and the cut-off ball valve 2 are closed, the nitrogen stop valve 6 and the sampling valve 8 are opened, nitrogen is conveyed into the branch pipeline from an external nitrogen source, and after the nitrogen is decompressed to proper pressure through the nitrogen decompression valve 5, all liquid samples in the quantifying tank are pressed into a sampling bottle which is placed at a sampling port in advance, so that sampling is finished.
The utility model provides a pair of vacuum liquid sampling system is full of liquid sample in the ration jar after, adopts nitrogen gas to impress the whole liquid sample in the ration jar in the sample bottle of sample connection department for no liquid remains in the ration jar, has accomplished that sample no liquid at every turn remains, need not to demolish equipment and washs convenient operation.
It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (3)
1. A vacuum liquid sampling system for sampling liquid in a vacuum line, the vacuum line having a sampling point, the vacuum line comprising: the sampling system comprises a cut-off ball valve, a plunger type sampling valve, a check valve, a nitrogen pressure reducing valve, a nitrogen shut-off valve, a quantitative tank and a sampling valve;
the quantitative tank is connected with a sampling point through a first pipeline, the cut-off ball valve and the plunger type sampling valve are both arranged on the first pipeline, and the plunger type sampling valve is positioned on one side, close to the quantitative tank, of the cut-off ball valve;
a branch pipeline is connected between the plunger type sampling valve on the first pipeline and the quantifying tank, the branch pipeline is connected with an external nitrogen source, and the check valve, the nitrogen reducing valve and the nitrogen stop valve are arranged on the branch pipeline;
the quantitative tank is connected with a second pipeline, one side of the second pipeline, which is far away from the quantitative tank, is a sampling port, and the sampling valve is installed on the second pipeline.
2. The vacuum liquid sampling system of claim 1, wherein: the sampling point extends into 1/3 of the inner diameter of the vacuum pipeline.
3. The vacuum liquid sampling system of claim 1, wherein: the plunger of the plunger type sampling valve passes through the ball channel of the cut-off ball valve to reach a sampling point.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222436772.2U CN218725657U (en) | 2022-09-15 | 2022-09-15 | Vacuum liquid sampling system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222436772.2U CN218725657U (en) | 2022-09-15 | 2022-09-15 | Vacuum liquid sampling system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218725657U true CN218725657U (en) | 2023-03-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222436772.2U Active CN218725657U (en) | 2022-09-15 | 2022-09-15 | Vacuum liquid sampling system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218725657U (en) |
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2022
- 2022-09-15 CN CN202222436772.2U patent/CN218725657U/en active Active
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