CN210427096U - Two-phase flow system sampling and recovering device - Google Patents
Two-phase flow system sampling and recovering device Download PDFInfo
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- CN210427096U CN210427096U CN201921129245.9U CN201921129245U CN210427096U CN 210427096 U CN210427096 U CN 210427096U CN 201921129245 U CN201921129245 U CN 201921129245U CN 210427096 U CN210427096 U CN 210427096U
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Abstract
The utility model discloses a two-phase flow system sample recovery unit, its characterized in that: the material storage tank is connected with a conveying pump, a sampling pipeline D is connected to the minimum return pipeline E of the outlet of the conveying pump, and the pipeline D is connected to the sampler; the upper half part of the sampler is provided with a first phase fluid pipeline A: the pipeline A is sequentially connected with a first ball valve, a first sight glass and a first sampling valve; the bottom end of the sampler is provided with a sewage discharge pipeline C: the pipeline C is sequentially connected with a third ball valve and a third sight glass; the front section of the sewage discharge pipeline C is also connected with a second-phase fluid pipeline B through a tee joint: the pipeline B is sequentially connected with a second sight glass and a second sampling valve; pipeline A, pipeline B and the terminal export of blowdown pipeline C converge to same house steward and insert the blending tank, and venturi is connected to the blending tank bottom, and venturi connects at the delivery pump. Forming a complete closed loop. The waste liquid does not need to be discharged outwards, so that a good working environment is ensured, and the waste of products is avoided.
Description
Technical Field
The utility model relates to a sample and recovery system especially relates to a two-phase flow system sample recovery unit in chemical production process.
Background
In the chemical production process, all indexes of finished products and semi-finished products in all production procedures need to be controlled in real time, namely, the products are mainly analyzed and checked on line or off line, if the products are qualified, the next procedure is carried out, and if the products are not qualified, the products need to be reprocessed. For reasons of investment or technical problems, it is a common practice to take samples in equipment or pipelines and then send them to an analysis room for examination.
In order to make the sample representative and accurately reflect the production process conditions, a sampling valve is usually opened before sampling, dead corners of the pipeline and residual materials are discharged, and then sampling is performed. The adoption of the method has two disadvantages, namely, the great waste of the product is caused, and the product can not be recycled after contacting with the air, thereby causing environmental pollution. In the two-phase flow system sampling, two phase samples need to be analyzed respectively, the problem of uneven sampling exists, the waste caused is larger, and the samples are pretreated before being sent to an analysis chamber, so that the inspection time is delayed, and the process adjustment time is delayed.
The utility model patent CN 207793264U discloses an enzyme preparation zymotic fluid sample recovery unit. The sampling and recovering device comprises a collector, a sampling pump, a storage tank, a blow-off pipe, a control mechanism and the like. The sampling tube is used for sampling fermentation liquor with different heights in an adjustable way, and the waste material removing time can be controlled automatically. The device does not return the waste material to the system, resulting in waste of the product. And the device needs special design, the input cost is high, and the wide applicability is not strong.
The invention patent CN 103674617B discloses a sampling system arranged on a reactor, and the system comprises a sampling tube, a sampling pump, a flow cell, a filtering device, a heating device and the like. The technology can accurately sample and pre-treat the sample in the reaction in time, and carry out on-line detection, thereby ensuring the timely adjustment and control of the reaction process. And the detected sample returns to the reactor, thereby avoiding the waste of products. However, the system is matched with a special online detection instrument, the investment cost is high, a two-phase flow sampling system is not involved, and the universality is not strong.
Disclosure of Invention
In order to overcome the defects in the prior art, the utility model aims to provide a two-phase flow system sampling and recovering device.
In order to achieve the purpose, the utility model adopts the following technical scheme: a two-phase flow system sampling recovery device is characterized in that: a discharge pipe at the bottom of the material storage tank is connected with a conveying pump, a sampling pipeline D is connected to the minimum return pipeline E at the outlet of the conveying pump, and the sampling pipeline D is connected to a sampler; the upper half part of the sampler is provided with a first phase fluid pipeline A: the pipeline A is sequentially connected with a first ball valve, a first sight glass and a first sampling valve; the bottom end of the sampler is provided with a sewage discharge pipeline C: the sewage discharge pipeline C is sequentially connected with a third ball valve and a third sight glass; the front section of the sewage discharge pipeline C is also connected with a second-phase fluid pipeline B through a tee joint: a second sight glass and a second sampling valve are sequentially connected to the pipeline B, the pipeline B is an inverted U-shaped pipe, and the height of the U-shaped pipe is equal to that of the pipe orifice of the sampling pipeline D; pipeline A, pipeline B and the terminal export of blowdown pipeline C converge to same house steward and insert the blending tank, and venturi is connected to the blending tank bottom, and venturi connects on the import pipeline of delivery pump. Pipeline A, pipeline B and the terminal export of blowdown pipeline C converge to same general way and insert the blending tank, and venturi is connected to the blending tank bottom, and venturi connects on the import pipeline of delivery pump.
And a pressure reduction pore plate is arranged on the pipeline D.
A first gas phase balance pipe F1 is arranged between the sampler and the material storage tank; a second gas phase balance pipe F2 is arranged between the first phase fluid pipeline A and the second phase fluid pipeline B, and the first gas phase balance pipe F1 is communicated with the second gas phase balance pipe F2.
The utility model has the advantages that:
1. the sampler is arranged on the minimum return pipeline of the delivery pump, and an attached power facility is not required to be added. The continuous sampling and the intermittent sampling can be freely switched, the automation degree is high, and the operation is simple and easy.
2. The material flow enters the material mixing unit from the minimum return pipeline of the conveying pump through the flow sampler, the first phase sampling pipeline, the second phase sampling pipeline and the sewage discharge pipeline and finally returns to the inlet of the conveying pump to form a complete closed loop. The waste liquid does not need to be discharged outwards, so that a good working environment is ensured, and the waste of products is avoided.
3. The device can be used for pre-treating a two-phase flow material system and automatically separating, so that the pre-treating time in an analysis chamber is saved, the detection time is shortened, the process operation parameters are timely adjusted, and the stable quality of the product is ensured.
Drawings
FIG. 1 is a schematic view of the present invention;
in the figure: 1-a sampler, 2-a pressure reduction pore plate, 3-a ball valve, 4-a sight glass, 5-a sampling valve, 6-a sight glass, 7-a sampling valve, 8-a ball valve, 9-a sight glass, 10-a mixing tank, 11-a venturi tube, 12-a delivery pump and 13-a material storage tank.
Detailed Description
The following examples further illustrate the solution provided by the present invention, but the present invention is not limited to the examples listed.
Example 1, see fig. 1, a two-phase flow system sampling recovery device, characterized by: a discharge pipe at the bottom of the material storage tank 13 is connected with a delivery pump 12, a sampling pipeline D is connected on a minimum return pipeline E at the outlet of the delivery pump 12, a pressure reduction pore plate 2 is arranged on the pipeline D, and the sampling pipeline D is connected into a sampler 1; the upper half part of the sampler 1 is provided with a first phase fluid pipeline A: the pipeline A is sequentially connected with a first ball valve 3, a first sight glass 4 and a first sampling valve 5; the bottom end of the sampler 1 is provided with a sewage discharge pipeline C: the sewage discharge pipeline C is sequentially connected with a third ball valve 8 and a third sight glass 9; the front section of the sewage discharge pipeline C is also connected with a second-phase fluid pipeline B through a tee joint: a second sight glass 6 and a second sampling valve 7 are sequentially connected to the pipeline B, the pipeline B is an inverted U-shaped pipe, and the height of the U-shaped pipe is equal to that of the pipe orifice of the sampling pipeline D; the terminal export of pipeline A, pipeline B and blowdown pipeline C converges to same house steward and inserts blending tank 10, and venturi 11 is connected to blending tank 10 bottom, and venturi 11 connects on the import pipeline of delivery pump 12.
A first gas phase balance pipe F1 is arranged between the sampler 1 and the material storage tank 13; a second gas phase balance pipe F2 is arranged between the first phase fluid pipeline A and the second phase fluid pipeline B, and the first gas phase balance pipe F1 is communicated with the second gas phase balance pipe F2.
The working steps are as follows:
1. the two-phase material flow passes through the pressure reducing orifice plate 2 from the material storage tank 13 through the outlet pipeline E of the delivery pump 12, is reduced in pressure and then enters the sampler 1;
2. the two-phase fluid system is fully buffered in the sampler 1. The sampling can adopt two modes of continuous sampling and intermittent sampling. When intermittent sampling is adopted, the third ball valve 8 is opened, the third sight glass 9 is observed, and when the object flow passes through the third sight glass 9, the third ball valve 8 can be closed;
3. the two-phase material flow is accumulated in the sampler 1, and due to different density differences, the two-phase fluid is automatically layered, the descending flow with high density flows to the second-phase fluid pipeline B, and the ascending flow with low density flows to the first-phase fluid pipeline A. When observing the second sight glass 6, the second phase fluid flows out from the pipe orifice of the second phase fluid pipe B when the total liquid level reaches the second phase fluid pipe B. Observing a first-phase view mirror 4 along with the continuous rise of the liquid level, and when the total liquid level reaches a first-phase fluid pipeline A, enabling the first-phase fluid to flow out from a pipeline opening A;
4. outlets of the first phase fluid pipeline A and the second phase fluid pipeline B converge to the same main pipe to enter the material mixing tank 10, and a baffling mixing unit is arranged inside the mixing tank 10 to ensure that the two-phase fluids are fully mixed before entering a logistics system. The two-phase fluid flows into the venturi tube 11 after being uniformly mixed, and the venturi tube 11 can provide a certain suction force to ensure that the mixed material smoothly enters the inlet of the delivery pump 12. To this end, the stream forms a complete loop;
the operation key points are as follows:
1. and an upstream valve of the pressure reduction pore plate 2 is adjusted to reduce the flow of a loop, so that the retention time of the material can be prolonged, and the sample of the two-phase flow has good representativeness. Reducing the diameters of the first phase fluid pipeline and the second phase fluid pipeline as much as possible according to the flow of the delivery pump;
2. according to the production process requirements, the first sampling valve 5 on the first phase fluid pipeline A and the second sampling valve 7 on the second phase fluid pipeline B can be respectively used for sampling so as to grasp the production condition and timely adjust the process.
Claims (3)
1. A two-phase flow system sampling recovery device is characterized in that: a discharge pipe at the bottom of the material storage tank (13) is connected with a delivery pump (12), a sampling pipeline D is connected to a minimum return pipeline E at the outlet of the delivery pump (12), and the sampling pipeline D is connected to the sampler (1); the upper half part of the sampler (1) is provided with a first phase fluid pipeline A: the pipeline A is sequentially connected with a first ball valve (3), a first sight glass (4) and a first sampling valve (5); the bottom end of the sampler (1) is provided with a sewage discharge pipeline C: a third ball valve (8) and a third sight glass (9) are sequentially connected to the sewage discharge pipeline C; the front section of the sewage discharge pipeline C is also connected with a second-phase fluid pipeline B through a tee joint: a second sight glass (6) and a second sampling valve (7) are sequentially connected to the pipeline B, the pipeline B is an inverted U-shaped pipe, and the height of the U-shaped pipe is equal to that of the pipe orifice of the sampling pipeline D; the outlet at the tail ends of the pipeline A, the pipeline B and the sewage discharge pipeline C is converged to the same main pipe to be connected into the mixing tank (10), the bottom of the mixing tank (10) is connected with the Venturi tube (11), and the Venturi tube (11) is connected to the inlet pipeline of the conveying pump (12).
2. A sampling and recovering device for two-phase flow system according to claim 1, wherein said piping (D) is provided with a pressure reducing orifice (2).
3. The two-phase flow system sampling recovery device according to claim 1, wherein a first gas phase balance pipe F1 is arranged between the sampler (1) and the material storage tank (13); a second gas phase balance pipe F2 is arranged between the first phase fluid pipeline A and the second phase fluid pipeline B, and the first gas phase balance pipe F1 is communicated with the second gas phase balance pipe F2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921129245.9U CN210427096U (en) | 2019-07-18 | 2019-07-18 | Two-phase flow system sampling and recovering device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921129245.9U CN210427096U (en) | 2019-07-18 | 2019-07-18 | Two-phase flow system sampling and recovering device |
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| CN210427096U true CN210427096U (en) | 2020-04-28 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110274787A (en) * | 2019-07-18 | 2019-09-24 | 甘肃银光聚银化工有限公司 | A kind of two phase flow system sampling recyclable device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110274787A (en) * | 2019-07-18 | 2019-09-24 | 甘肃银光聚银化工有限公司 | A kind of two phase flow system sampling recyclable device |
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