CN219695657U - Pressure control device for gas pipeline - Google Patents
Pressure control device for gas pipeline Download PDFInfo
- Publication number
- CN219695657U CN219695657U CN202320376739.7U CN202320376739U CN219695657U CN 219695657 U CN219695657 U CN 219695657U CN 202320376739 U CN202320376739 U CN 202320376739U CN 219695657 U CN219695657 U CN 219695657U
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- Prior art keywords
- regulating valve
- air inlet
- pressure
- inlet pipe
- control device
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- 230000001105 regulatory effect Effects 0.000 claims abstract description 64
- 238000002347 injection Methods 0.000 claims abstract description 32
- 239000007924 injection Substances 0.000 claims abstract description 32
- 239000007791 liquid phase Substances 0.000 claims abstract description 30
- 238000010992 reflux Methods 0.000 claims abstract description 14
- 239000007788 liquid Substances 0.000 claims description 7
- 239000012071 phase Substances 0.000 claims description 4
- 238000000926 separation method Methods 0.000 claims description 2
- 239000012530 fluid Substances 0.000 claims 1
- 238000012544 monitoring process Methods 0.000 abstract description 5
- 238000004886 process control Methods 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 30
- 238000000034 method Methods 0.000 description 8
- 230000000694 effects Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000010977 unit operation Methods 0.000 description 3
- 230000001276 controlling effect Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 1
- 150000001336 alkenes Chemical class 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 239000007792 gaseous phase Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 description 1
- 239000003507 refrigerant Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Landscapes
- Jet Pumps And Other Pumps (AREA)
Abstract
The utility model belongs to the technical field of process control, and particularly relates to a gas pipeline pressure control device which comprises a venturi tube, wherein a liquid phase tank is arranged at the lower end of the venturi tube, a centrifugal pump is arranged at the lower end of the liquid phase tank, one side of the venturi tube is connected with a gas inlet pipe, and the side surface of the gas inlet pipe is connected with a gas inlet pressure sensor. The utility model can realize the real-time monitoring function of the gas pressure at the gas inlet pipe by arranging the venturi tube, the liquid phase tank, the centrifugal pump, the gas inlet pressure sensor, the gas outlet reflux regulating valve and the injection regulating valve, and can regulate and control the gas pressure under the action of the gas outlet reflux regulating valve after feedback.
Description
Technical Field
The utility model relates to the technical field of process control, in particular to a gas pipeline pressure control device.
Background
In the chemical industry, pressure control is widely used in various production processes. In general, the independent unit operation can achieve stable pressure control through a simple pressure control loop, such as a condenser refrigerant regulating valve controlling the operating pressure of the column, and a non-condensable gas regulating valve controlling the operating pressure of the storage tank. These pressure control loops all serve in unit operations with regulation means, facilitating process stability. However, in processes involving gas delivery, gas line pressure is an important control indicator, but often lacks effective pressure regulation means.
The prior art has the following problems:
in some special processes, the pressure of the gas system is required to be stable along with the rise and fall of the production load, and the pressure of the system lacks an effective control way, so that the pressure is often unstable, such as an olefin, an organic fluorine gas cracking process and the like. The unit operation pressure control circuit described above cannot achieve this object. Accordingly, there is a need to develop a gas line pressure control system and method.
Disclosure of Invention
Aiming at the defects of the prior art, the utility model provides a gas pipeline pressure control device, which solves the problem that in the existing special process, the pressure of a gas system is required to be stable along with the lifting of production load, and the pressure of the system lacks an effective control way, so that the pressure is often unstable.
In order to achieve the above purpose, the present utility model provides the following technical solutions: a gas line pressure control device comprising a venturi, characterized in that: the utility model discloses a liquid phase jar, venturi's lower extreme is provided with the liquid phase jar, the lower extreme of liquid phase jar is provided with the centrifugal pump, one side of venturi is connected with the intake pipe, the side of intake pipe is connected with intake pressure sensor, the upper end of centrifugal pump is provided with the injection governing valve that is connected with the venturi, one side of liquid phase jar is connected with the outlet duct, the side of outlet duct is provided with the back flow control valve that gives vent to anger that is connected with the intake pipe, just venturi is through centrifugal pump circulation liquid drive inlet, the gas-liquid phase of separation venturi export in the liquid phase jar, liquid in the centrifugal pump transport liquid phase jar goes the venturi, the gas phase gas outlet department of liquid phase jar increases branch road backward flow to the intake pipe.
As a preferable technical scheme of the utility model, the air inlet pressure sensor is arranged on an air inlet pipe line.
As a preferred embodiment of the present utility model, the centrifugal pump is in communication with the venturi tube through a pipeline, and the injection regulating valve is provided on the pipeline from the outlet of the centrifugal pump to the venturi tube.
As a preferable technical scheme of the utility model, the pressure at the air inlet pipe is automatically controlled by the two valves of the air outlet backflow regulating valve and the injection regulating valve, when the pressure at the air inlet pipe is larger than a pressure set value, the air outlet backflow regulating valve is automatically closed, the opening of the injection regulating valve is automatically increased, and when the pressure of the air inlet pipeline returns to the pressure set value, the injection regulating valve stops acting.
As a preferable technical scheme of the utility model, when the pressure at the air inlet pipe is smaller than a pressure set value, the injection regulating valve is automatically closed, the opening of the air outlet backflow regulating valve is automatically increased, and when the pressure of the air inlet pipeline returns to the pressure set value, the air outlet backflow regulating valve stops acting.
As a preferable technical scheme of the utility model, a pipeline is arranged between the air outlet pipe and the air inlet pipe, and the air outlet reflux regulating valve is arranged at the center of the pipeline between the air outlet pipe and the air inlet pipe.
As a preferable technical scheme of the utility model, the pressure set value at the air inlet pipe is provided with an insensitive area, and the range of the insensitive area is not limited.
As a preferable technical scheme of the utility model, when the pressure at the air inlet pipe is in the dead zone, the air outlet backflow regulating valve and the injection regulating valve do not act.
As a preferable technical scheme of the utility model, an actuator is arranged at the output end of the air inlet pressure sensor, and the air inlet pressure sensor is electrically connected with the air outlet reflux regulating valve through the actuator.
As a preferable technical scheme of the utility model, the air inlet pressure sensor is electrically connected with the injection regulating valve through an actuator.
Compared with the prior art, the utility model provides a gas pipeline pressure control device, which has the following beneficial effects:
1. the gas pipeline pressure control device can realize the real-time monitoring function of the gas pressure at the gas inlet pipe by arranging the venturi tube, the liquid phase tank, the centrifugal pump, the gas inlet pressure sensor, the gas outlet reflux regulating valve and the injection regulating valve, and can regulate and control the gas pressure at the gas inlet pipe under the action of the gas outlet reflux regulating valve after feedback.
2. The control system and the method provided by the utility model are simple and easy to realize, the number of adopted devices is small, the installation and connection modes are simple, and the operability and the safety are stronger.
Drawings
FIG. 1 is a schematic diagram of the structure of the present utility model.
In the figure: 1. a venturi tube; 2. a liquid phase tank; 3. a centrifugal pump; 4. an intake pressure sensor; 5. an outlet air reflux regulating valve; 6. an injection regulating valve; 7. an air inlet pipe; 8. and an air outlet pipe.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Referring to fig. 1, in this embodiment: the utility model provides a gas pipeline pressure control device, including venturi 1, venturi 1's lower extreme is provided with liquid phase jar 2, liquid phase jar 2's lower extreme is provided with centrifugal pump 3, venturi 1's one side is connected with intake pipe 7, intake pipe 7's side is connected with intake pressure sensor 4, be used for intake pipe 7 department gaseous phase pressure's real-time supervision monitoring to use, centrifugal pump 3's upper end is provided with the injection governing valve 6 that is connected with venturi 1, liquid phase jar 2's one side is connected with outlet duct 8, outlet duct 8's side is provided with the back flow governing valve 5 that gives vent to anger that is connected with intake pipe 7, and venturi 1 circulates liquid drive through centrifugal pump 3 and admit air, separate venturi 1 export's gas-liquid phase in the liquid phase jar 2, centrifugal pump 3 carries liquid in the liquid phase jar 2 to go venturi 1, liquid phase jar 2's gas outlet department increases the branch road and flows back to intake pipe 7.
In the embodiment, the air inlet pressure sensor 4 is arranged on the air inlet pipe 7, the structure is simple to install, and the real-time monitoring and monitoring of the gas phase at the air inlet pipe 7 can be realized; the centrifugal pump 3 is communicated with the venturi tube 1 through a pipeline, and the injection regulating valve 6 is arranged on the pipeline from the outlet of the centrifugal pump 3 to the venturi tube 1, so that the pipeline pressure control effect is realized, and the use safety is ensured; the pressure at the air inlet pipe 7 is automatically controlled by the double valves of the air outlet backflow regulating valve 5 and the injection regulating valve 6, when the pressure at the air inlet pipe 7 is larger than a pressure set value, the air outlet backflow regulating valve 5 is automatically closed, the opening of the injection regulating valve 6 is automatically increased, and when the pressure of the air inlet pipe 7 returns to the pressure set value, the injection regulating valve 6 stops acting, so that the air inlet pipe 7 can be applied to a gas conveying process lacking a pressure regulating means, and has excellent regulating performance on the pressure of a front system; when the pressure at the air inlet pipe 7 is smaller than the pressure set value, the injection regulating valve 6 is automatically closed, the opening of the air outlet reflux regulating valve 5 is automatically increased, and when the pressure of the air inlet pipe 7 returns to the pressure set value, the air outlet reflux regulating valve 5 stops acting, so that the structural design is reasonable; the middle of the air outlet pipe 8 and the air inlet pipe 7 is also provided with a pipeline, and the air outlet reflux regulating valve 5 is arranged at the center of the pipeline between the air outlet pipe 8 and the air inlet pipe 7, so that the operability is strong; the pressure set value at the air inlet pipe 7 is provided with an insensitive area, and the range of the insensitive area is not limited; when the pressure at the air inlet pipe 7 is in the insensitive area, the air outlet reflux regulating valve 5 and the injection regulating valve 6 do not act, and the structure is reasonable; the output end of the air inlet pressure sensor 4 is provided with an actuator, the air inlet pressure sensor 4 is electrically connected with the air outlet reflux regulating valve 5 through the actuator, so that an automatic control effect is realized, and the operation and the use are convenient; the air inlet pressure sensor 4 is electrically connected with the injection regulating valve 6 through an actuator, so that an automatic control effect is realized, and the operation and the use are convenient.
The working principle and the using flow of the utility model are as follows: the device comprises a venturi tube 1, a liquid phase tank 2, a centrifugal pump 3, an air inlet pressure sensor 4, an air outlet backflow regulating valve 5, a jet regulating valve 6 and a pipeline connected with a system. The gas of the front system is sucked into the venturi tube 1 under the injection action of circulating liquid of the venturi tube 1, the gas and the liquid enter the liquid phase tank 2 together, the gas phase is discharged from the top of the liquid phase tank 2, a return pipeline is added on a gas outlet pipe 8 to an air inlet pipe 7 line of the venturi tube 1, an air outlet return regulating valve 5 is arranged on the return pipeline, an injection regulating valve 6 is arranged at the outlet of the centrifugal pump 3, when the pressure on the air inlet pipe 7 line is larger than a pressure set value, the air inlet pressure sensor 4 outputs a signal to an actuator, the air outlet return regulating valve 5 is closed, the valve position of the injection regulating valve 6 is increased until the pressure returns to the set value, when the pressure on the air inlet pipe 7 line is smaller than the pressure set value, the air inlet pressure sensor 4 outputs a signal to the actuator, the injection regulating valve 6 is closed, the valve position of the air outlet return regulating valve 5 is increased until the pressure returns to the set value, the pressure set value on the air inlet pipe 7 line has an insensitive zone, and in the zone, the air outlet return regulating valve 5 and the injection regulating valve 6 do not act, so that when the pressure fluctuates around the set value is avoided.
Finally, it should be noted that: the foregoing description is only a preferred embodiment of the present utility model, and the present utility model is not limited thereto, but it is to be understood that modifications and equivalents of some of the technical features described in the foregoing embodiments may be made by those skilled in the art, although the present utility model has been described in detail with reference to the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.
Claims (10)
1. A gas line pressure control device comprising a venturi (1), characterized in that: the utility model discloses a liquid phase jar that is provided with of venturi (1), the lower extreme of liquid phase jar (2) is provided with centrifugal pump (3), one side of venturi (1) is connected with intake pipe (7), the side of intake pipe (7) is connected with intake pressure sensor (4), the upper end of centrifugal pump (3) is provided with injection governing valve (6) that are connected with venturi (1), one side of liquid phase jar (2) is connected with outlet duct (8), the side of outlet duct (8) is provided with back flow governing valve (5) of giving vent to anger that are connected with intake pipe (7), just venturi (1) are through centrifugal pump (3) circulating fluid drive inlet, the gas-liquid phase of separation venturi (1) export in liquid phase jar (2), liquid in centrifugal pump (3) transport liquid phase jar (2) goes venturi (1), the gas phase gas outlet department of liquid phase jar (2) increases branch road backward flow to intake pipe (7).
2. A gas line pressure control device according to claim 1, wherein: the air inlet pressure sensor (4) is arranged on the air inlet pipe (7) line.
3. A gas line pressure control device according to claim 1, wherein: the centrifugal pump (3) is communicated with the venturi tube (1) through a pipeline, and the injection regulating valve (6) is arranged on the pipeline from the outlet of the centrifugal pump (3) to the venturi tube (1).
4. A gas line pressure control device according to claim 1, wherein: the pressure at the air inlet pipe (7) is automatically controlled through the double valves of the air outlet backflow regulating valve (5) and the injection regulating valve (6), when the pressure at the air inlet pipe (7) is larger than a pressure set value, the air outlet backflow regulating valve (5) is automatically closed, the opening of the injection regulating valve (6) is automatically increased, and when the line pressure of the air inlet pipe (7) returns to the pressure set value, the injection regulating valve (6) stops acting.
5. A gas line pressure control device according to claim 1, wherein: when the pressure at the air inlet pipe (7) is smaller than the pressure set value, the injection regulating valve (6) is automatically closed, the opening of the air outlet backflow regulating valve (5) is automatically increased, and when the line pressure of the air inlet pipe (7) returns to the pressure set value, the air outlet backflow regulating valve (5) stops acting.
6. A gas line pressure control device according to claim 1, wherein: the air outlet pipe (8) and the air inlet pipe (7) are also provided with pipelines, and the air outlet reflux regulating valve (5) is arranged at the center of the pipeline between the air outlet pipe (8) and the air inlet pipe (7).
7. A gas line pressure control device according to claim 1, wherein: the pressure set value at the air inlet pipe (7) is provided with an insensitive area, and the range of the insensitive area is not limited.
8. A gas line pressure control device according to claim 1, wherein: when the pressure of the air inlet pipe (7) is in the insensitive area, the air outlet reflux regulating valve (5) and the injection regulating valve (6) do not act.
9. A gas line pressure control device according to claim 1, wherein: the output end of the air inlet pressure sensor (4) is provided with an actuator, and the air inlet pressure sensor (4) is electrically connected with the air outlet backflow regulating valve (5) through the actuator.
10. A gas line pressure control device as claimed in claim 9, wherein: the air inlet pressure sensor (4) is electrically connected with the injection regulating valve (6) through an actuator.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320086443 | 2023-01-30 | ||
| CN2023200864431 | 2023-01-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219695657U true CN219695657U (en) | 2023-09-15 |
Family
ID=87966958
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320376739.7U Active CN219695657U (en) | 2023-01-30 | 2023-03-03 | Pressure control device for gas pipeline |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219695657U (en) |
-
2023
- 2023-03-03 CN CN202320376739.7U patent/CN219695657U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20240429 Address after: 324000 Kecheng District, Quzhou City, Zhejiang Province Patentee after: ZHEJIANG JUSHENG FLUOROCHEMICAL CO.,LTD. Country or region after: China Address before: 201 Huabei Second Road, Kecheng District, Quzhou City, Zhejiang Province Patentee before: ZHEJIANG JUSHENG FLUOROCHEMICAL CO.,LTD. Country or region before: China Patentee before: ZHEJIANG JUHUA Co.,Ltd. FLUOR POLYMERIC PLANT |