CN219202184U - High-precision pressure control device - Google Patents
High-precision pressure control device Download PDFInfo
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- CN219202184U CN219202184U CN202223232453.6U CN202223232453U CN219202184U CN 219202184 U CN219202184 U CN 219202184U CN 202223232453 U CN202223232453 U CN 202223232453U CN 219202184 U CN219202184 U CN 219202184U
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Abstract
The utility model discloses a high-precision pressure control device. The high-precision pressure control device comprises an air source mechanism, an air pressure classification mechanism and a recovery mechanism. According to the utility model, the air pressure precision is regulated in a grading manner through the four air pressure control chambers of the air pressure grading mechanism, when the actual air pressure is greater than the set air pressure, the data collector respectively distributes corresponding air pressure values for the four air pressure control chambers, the set air pressure values are reached with minimum errors, the accuracy of scientific research experiment conditions is ensured, and meanwhile, the recovery mechanism and the air source mechanism collect redundant air for secondary use, so that the experiment cost is reduced.
Description
Technical Field
The utility model relates to the field of deep and underground co-associated resource coordination exploitation, in particular to a high-precision pressure control device.
Background
At present, in the deep co-associated resource coordinated exploitation in-situ experiment system, for the air pressure adjustment of the inlet end of the core holder, the air pressure is slowly adjusted until a preset air pressure value is reached mainly by manually rotating the air pressure reducing valve and observing dial indication of the pressure reducing valve. However, there is hysteresis in the dial indication of the pressure relief valve, which is embodied in that the pressure relief valve has stopped rotating, while the pointer of the pressure relief valve is still rotating, and the indication is increasing, resulting in an actual air pressure value greater than the preset air pressure value. When the pressure reducing valve rotates backwards to reduce pressure, the air leakage phenomenon exists. In summary, in the original deep co-associated resource coordinated exploitation in-situ experiment system, the method for adjusting the air pressure by using the pressure reducing valve has the defects of hysteresis, high error and easy air leakage of air pressure display. Based on the above situation, the utility model designs a high-precision pressure control device, the air pressure precision is regulated in a grading way through the four air pressure control chambers of the air pressure grading mechanism, when the actual air pressure is larger than the set air pressure, the data collector respectively distributes corresponding air pressure values for the four air pressure control chambers, the set air pressure values are reached with the minimum error, the accuracy of scientific research experiment conditions is ensured, and meanwhile, the recovery mechanism and the air source mechanism collect redundant air for secondary use, so that the experiment cost is reduced.
Disclosure of Invention
The embodiment of the utility model aims to provide a high-precision pressure control device, wherein the air pressure precision is regulated in a grading way through four air pressure control chambers of an air pressure grading mechanism, when the actual air pressure is larger than the set air pressure, a data collector respectively distributes corresponding air pressure values for the four air pressure control chambers, the set air pressure values are reached with minimum errors, the accuracy of scientific research experiment conditions is ensured, and meanwhile, a recovery mechanism and an air source mechanism collect redundant air for secondary use, so that the experiment cost is reduced.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a high precision pressure control device, comprising:
the air source mechanism comprises an air bottle and an air booster pump; the air pressure grading mechanism comprises a data collector, an air pressure control chamber I, an air pressure control chamber II, an air pressure control chamber III, an air pressure control chamber IV, a pressure sensor I, a pressure sensor II, a pressure sensor III, a pressure sensor IV, a pressure sensor V and a core holder, wherein the inner structures of the air pressure control chamber I, the air pressure control chamber II, the air pressure control chamber III and the air pressure control chamber IV are the same, and each air pressure grading mechanism consists of a partition plate, an air pressure spring, an upper piston, a piston telescopic rod, a plug and a lower piston; the recovery mechanism comprises an air storage tank and an air injection pump. The gas cylinder is connected with the gas booster pump and the gas injection pump respectively through pipelines, the data acquisition device is connected with the gas booster pump through a circuit, a wireless transmission system is equipped to connect with the gas pressure control chamber simultaneously, the gas booster pump is connected with the gas pressure control chamber I respectively at two ends of the pressure sensor I, the gas pressure control chamber I, the pressure sensor II, the pressure sensor III, the gas pressure control chamber III, the pressure sensor IV, the gas pressure control chamber IV, the pressure sensor V and the core holder are sequentially connected in series, one end of the gas storage tank is connected with the gas injection pump through a pipeline, the other end of the gas storage tank is connected with the gas pressure control chamber I, the gas pressure control chamber II, the gas pressure control chamber III and the gas pressure control chamber IV respectively through pipelines, the gas injection pump is connected with the gas cylinder through a pipeline, the partition plate is arranged in the gas pressure control chamber, the upper end of the gas spring is connected with the upper piston, the lower end of the gas pressure control chamber is connected with the plug, and the upper piston is connected with the lower piston through the piston telescopic rod.
Preferably, it is characterized in that: the upper end of the air spring is connected with the upper piston, and the lower end of the air spring is connected with the plug.
Compared with the existing air pressure control system, the utility model has the following advantages:
(1) Four air pressure control chambers with different precision are arranged, air pressure is regulated in a grading manner, and air pressure control precision is improved.
(2) And the recovery mechanism and the air source mechanism are arranged, and redundant air is collected for secondary utilization, so that the experiment cost is reduced.
Drawings
FIG. 1 is an overall state diagram of an embodiment of the present utility model
FIG. 2 is a cross-sectional view of the pneumatic control chamber in a normally open state
FIG. 3 is a cross-sectional view of the pneumatic control chamber in a normally closed state
FIG. 4 is a table of parameters for the pneumatic control room
In the figure: 1-a gas cylinder; 2-a data collector; 3-a gas booster pump; 4-an air pressure control chamber I; 5-an air pressure control chamber II; 6-an air pressure control chamber III; 7-an air pressure control chamber IV; 8-core holder; 9-a gas storage tank; 10-an air injection pump; 11-a pressure sensor I; 12-a pressure sensor II; 13-pressure sensor iii; 14-a pressure sensor IV; 15-a pressure sensor v; 16-dividing plates; 17-a gas spring; 18-upper piston; 19-a piston telescopic rod; 20-plugs; 21-lower piston.
Detailed Description
Referring to fig. 1 to 4, a high-precision pressure control device comprises an air source mechanism, an air pressure classification mechanism and a recovery mechanism. The accuracy of air pressure is adjusted in a grading manner through the four air pressure control chambers of the air pressure grading mechanism, when the actual air pressure is greater than the set air pressure, the data collector distributes corresponding air pressure values for the four air pressure control chambers respectively, the set air pressure values are achieved through minimum errors, accuracy of scientific research experiment conditions is guaranteed, and meanwhile the recovery mechanism and the air source mechanism collect redundant air for secondary use, so that experiment cost is reduced.
The gas cylinder 1 is respectively connected with the gas booster pump 3 and the gas injection pump 10 through pipelines, the data collector 2 is connected with the gas booster pump 3 through a pipeline, a wireless transmission system is simultaneously provided to be connected with a gas pressure control chamber, two ends of the pressure sensor I11 are respectively connected with the gas booster pump 3 and the gas pressure control chamber I4, the pressure sensor II 12, the gas pressure control chamber II 5, the pressure sensor III 13, the gas pressure control chamber III 6, the pressure sensor IV 14, the gas pressure control chamber IV 7, the pressure sensor V15 and the core holder 8 are sequentially connected in series, one end of the gas storage tank 9 is connected with the gas injection pump 10 through a pipeline, the other end is respectively connected with the gas pressure control chamber I4, the gas pressure control chamber II 5, the gas pressure control chamber III 6 and the gas pressure control chamber IV 7 through a pipeline, the gas injection pump 10 is connected with the gas cylinder 1 through a pipeline, the partition plate 16 is arranged in the gas pressure control chamber, the upper end of the gas pressure spring 17 is connected with the upper piston 18, the lower end of the partition plate 18 is connected with the plug 20, and the upper piston 18 is connected with the lower piston 21 through a telescopic rod 19.
As shown in fig. 2 and 3, the air pressure control chamber has two working states, one is in a normally open state, the other is in a normally closed state, and the initial state is in a normally open state.
The working principle of the air pressure control chamber is as follows:
assuming that the set air pressure value is 20MPa and the actual air pressure value output by the air booster pump 3 is 21.782MPa & gt20 MPa, the air pressure of the air pressure control chamber I4 is divided into 1MPa, the air pressure of the air pressure control chamber II 5 is divided into 0.7MPa, the air pressure of the air pressure control chamber III 6 is divided into 0.08MPa and the air pressure of the air pressure control chamber IV 7 is divided into 0.002MPa;
(1) The air pressure control chamber I4 is in a normally open state, air is discharged along the direction of a dotted line, the air enters the air storage tank 9, the air is discharged until 1MPa is exhausted, the upper piston 18 receives the instruction of the data acquisition unit 2, the air pressure spring 17 is compressed by the piston telescopic rod 19 to move downwards, the air pressure control chamber I4 is in a normally closed state, the air is discharged along the direction of the dotted line, the air enters the air pressure control chamber II 5, and the air pressure value displayed by the pressure sensor II 12 is 20.782MPa;
(2) The air pressure control chamber II 5 is in a normally open state, air is discharged along the direction of a dotted line in FIG. 2, enters the air storage tank 9, and is discharged until 0.7MPa of air is discharged, the upper piston 18 receives the instruction of the data acquisition device 2, the air pressure spring 17 is compressed by the piston telescopic rod 19 to move downwards, the air pressure control chamber II 5 is in a normally closed state, the air is discharged along the direction of the dotted line, and enters the air pressure control chamber III 6, and the air pressure sensor III 13 displays the air pressure value of 20.082MPa;
(3) The air pressure control chamber III 6 is in a normally open state, air is discharged along the direction of a dotted line, the air enters the air storage tank 9, the air is discharged until the pressure of 0.08MPa is reached, the upper piston 18 receives the instruction of the data acquisition device 2, the air pressure spring 17 is compressed by the piston telescopic rod 19 to move downwards, the air pressure control chamber III 6 is in a normally closed state at the moment, the air is discharged along the direction of the dotted line, the air enters the air pressure control chamber IV 7, and the air pressure value is 20.002MPa by the pressure sensor IV 14;
(4) The air pressure control chamber IV 7 is in a normally open state at first, air is discharged along the direction of a dotted line, the air enters the air storage tank 9, the air is discharged until the pressure of 0.02MPa is reached, the upper piston 18 receives the instruction of the data acquisition device 2, the air pressure spring 17 is compressed by the piston telescopic rod 19 to move downwards, the air pressure control chamber IV 7 is in a normally closed state at the moment, the air is discharged along the direction of the dotted line, the air enters the core holder 8, and the air pressure value is 20MPa as displayed by the pressure sensor V15.
The pressure is regulated in a grading way through four air pressure control chambers with different precision, and the set air pressure value is 20MPa;
the foregoing description is, of course, merely illustrative of preferred embodiments of the present utility model, and it should be understood that the present utility model is not limited to the above-described embodiments, but is intended to cover all modifications, equivalents and obvious modifications falling within the spirit and scope of the present utility model as defined by the appended claims.
Claims (1)
1. A high precision pressure control device, characterized in that: the high-precision pressure control device mainly comprises:
the air source mechanism comprises an air bottle and an air booster pump; the air pressure grading mechanism comprises a data collector, an air pressure control chamber I, an air pressure control chamber II, an air pressure control chamber III, an air pressure control chamber IV, a pressure sensor I, a pressure sensor II, a pressure sensor III, a pressure sensor IV, a pressure sensor V and a core holder, wherein the inner structures of the air pressure control chamber I, the air pressure control chamber II, the air pressure control chamber III and the air pressure control chamber IV are the same, and each air pressure grading mechanism consists of a partition plate, an air pressure spring, an upper piston, a piston telescopic rod, a plug and a lower piston; the recovery mechanism comprises an air storage tank and an air injection pump, the air cylinder is respectively connected with the air booster pump and the air injection pump through pipelines, the data acquisition device is connected with the air booster pump through the pipelines, a wireless transmission system is simultaneously equipped with the air pressure control chamber, two ends of the pressure sensor I are respectively connected with the air booster pump and the air pressure control chamber I, the pressure sensor II, the air pressure control chamber II, the pressure sensor III, the pressure sensor IV, the air pressure control chamber IV, the pressure sensor V and the core holder are sequentially connected in series, one end of the air storage tank is connected with the air injection pump through the pipelines, the other end of the air storage tank is respectively connected with the air pressure control chamber I, the air pressure control chamber II, the air pressure control chamber III and the air pressure control chamber IV through the pipelines, the air injection pump is connected with the air cylinder through the pipelines, the partition plate is arranged in the air pressure control chamber, the upper end of the air pressure spring is connected with the upper piston, the lower end of the air pressure sensor is connected with the plug, and the upper piston is connected with the lower piston through the piston telescopic rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223232453.6U CN219202184U (en) | 2022-12-04 | 2022-12-04 | High-precision pressure control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223232453.6U CN219202184U (en) | 2022-12-04 | 2022-12-04 | High-precision pressure control device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219202184U true CN219202184U (en) | 2023-06-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223232453.6U Active CN219202184U (en) | 2022-12-04 | 2022-12-04 | High-precision pressure control device |
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| Country | Link |
|---|---|
| CN (1) | CN219202184U (en) |
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2022
- 2022-12-04 CN CN202223232453.6U patent/CN219202184U/en active Active
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