CN204611003U - A kind of Intelligent control type cover gas pressure-limit valve - Google Patents
A kind of Intelligent control type cover gas pressure-limit valve Download PDFInfo
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- CN204611003U CN204611003U CN201520259257.9U CN201520259257U CN204611003U CN 204611003 U CN204611003 U CN 204611003U CN 201520259257 U CN201520259257 U CN 201520259257U CN 204611003 U CN204611003 U CN 204611003U
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Abstract
The utility model discloses a kind of Intelligent control type cover gas pressure-limit valve, it comprises valve body, capsule assembly and seal control device; Be provided with gas channel in valve body, described capsule assembly is arranged in this gas channel; Seal control device comprises piston-type hydraulic cylinder, piston drive mechanism and pressure monitoring device; The hydraulic oil chamber of oil hydraulic cylinder is communicated with capsule assembly; Pressure monitoring device works according to the pressure control piston driving mechanism of cover gas, by the capsule of capsule assembly described in the hydraulic oil press-in in oil hydraulic cylinder or sucking-off; By described channel seal after capsule expands, after reducing, passage is opened, and cover gas is discharged through valve body.This pressure-limit valve only has when overlapping atmospheric pressure and reaching the force value of our setting, and valve just opens pressure release; After pressure is reduced to certain numerical value, valve can cut out voluntarily.When valve opens one time, be in full open position; Good sealing effect during closedown, and its operating life improves greatly, no longer sends very large noise.
Description
Technical field
The utility model relates to oil extraction in oil field complete sets of Techniques equipment technical field, particularly a kind of Intelligent control type cover gas pressure-limit valve.
Background technique
In normal oil recovery process, a certain amount of cover overpressure is conducive to the normal production of oil well, therefore, general oil well is all designed with cover gas pressure-limit valve, is made up of, when overlapping gas superpressure valve ball, valve seat and spring, valve ball under pressure, is opened after overcoming the closing forces of spring, is fallen by earth pressure release.The pressure-limit valve of this structure has two shortcomings, and a shortcoming is in running order for a long time, and the sealing surface of valve is easy to be damaged and loses sealing; Another deficiency is, during the work of well, this pressure-limit valve has air-flow to be passed through, and spring repeatedly switch produces larger noise.
Model utility content
For solving the problem, the utility model discloses a kind of Intelligent control type cover gas pressure-limit valve, this pressure-limit valve only has when overlapping atmospheric pressure and reaching the force value of our setting, and valve just opens pressure release; After pressure is reduced to certain numerical value, valve can cut out voluntarily.When valve opens one time, be in full open position; Good sealing effect during closedown, and its operating life improves greatly, no longer sends very large noise.
For achieving the above object, a kind of Intelligent control type cover gas pressure-limit valve disclosed in the utility model, it comprises valve body, capsule assembly and seal control device; Be provided with gas channel in valve body, described capsule assembly is arranged in this gas channel; Seal control device comprises piston-type hydraulic cylinder, piston drive mechanism and pressure monitoring device; The hydraulic oil chamber of oil hydraulic cylinder is communicated with capsule assembly; Pressure monitoring device works according to the pressure control piston driving mechanism of cover gas, by the capsule of capsule assembly described in the hydraulic oil press-in in oil hydraulic cylinder or sucking-off; By described channel seal after capsule expands; After reducing, passage is opened, and cover gas is discharged through valve body.
Further, described pressure monitoring device comprises controller, for detecting the pressure transducer of cover atmospheric pressure; Controller is connected with described piston drive mechanism, controls described piston drive mechanism work clamp-oned or capsule described in sucking-off by the hydraulic oil in described oil hydraulic cylinder according to the measured value of pressure transducer.
Further, described piston drive mechanism is two-way hydraulic cylinder, and the piston rod of described two-way hydraulic cylinder is connected with the piston rod of described piston-type hydraulic cylinder.
Further, described piston drive mechanism is linkage mechanism, and linkage mechanism comprises support, depression bar and depression bar driving mechanism, and depression bar one end is hinged on support, and the other end of depression bar is connected with described depression bar driving mechanism; Be hinged with the piston rod of described piston-type hydraulic cylinder in the middle of depression bar; Described controller controls the work of described depression bar driving mechanism and lifts or fall described depression bar, and then drives the piston up-down of piston-type hydraulic cylinder.
Further, described depression bar driving mechanism comprises reducing motor, screw rod and nut; Or comprise reducing motor, leading screw and nut; Or described depression bar driving mechanism is two-way hydraulic cylinder.
Further, in described piston-type hydraulic cylinder, be provided with Compress Spring, on the piston rod in this spring suit plunger backer face.
Further, described pressure transducer is arranged in the gas channel of described valve body.
During use, a kind of pin thread of Intelligent control type cover gas pressure-limit valve is installed on the screw thread of well head four-way one side arm, during beginning, piston drive mechanism is in contraction state, piston rod is descending, hydraulic oil in piston compression oil hydraulic cylinder enters into capsule assembly, seals up valve body gas channel, and cover gas is sealed in sleeve pipe.When overlapping internal pressure higher than the force value set, pressure transducer is delivered to controller signal by datawire, controller opens depression bar driving mechanism, depression bar lifts, piston in hydraulic cylinder is lifted, and in capsule assembly, hydraulic oil is sucked out, and the capsule in capsule assembly shrinks, no longer seal up the working surface in main body, cover gas is discharged in ground oil-collecting manifold by valve body.Move in circles thus.
This pressure-limit valve is compared with prior art, safer, and automaticity is higher, and during work, noise is little, highly sensitive.
Accompanying drawing explanation
The structural representation of a kind of Intelligent control type cover gas pressure-limit valve that Fig. 1 provides for embodiment;
1-valve body; 2-capsule assembly; 3-seal control device; 4-oil hydraulic cylinder; 5-piston drive mechanism; 6-Compress Spring; 9-depression bar driving mechanism; 20-pressure monitoring device; 21-controller; 25-pressure transducer; 5.1-support; 5.2-depression bar; A-hydraulic oil.
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is described.
As shown in Figure 1, a kind of Intelligent control type cover gas pressure-limit valve, it comprises valve body 1, capsule assembly 2 and seal control device 3; Be provided with gas channel in valve body 1, capsule assembly 2 is arranged in this gas channel; Seal control device 3 comprises piston-type hydraulic cylinder 4, piston drive mechanism 5 and pressure monitoring device 20;
The hydraulic oil chamber of oil hydraulic cylinder 4 is communicated with capsule assembly 2; Hydraulic oil A in oil hydraulic cylinder, according to the pressure control piston driving mechanism work of cover gas, is pressed into or the capsule of sucking-off capsule assembly 2 by pressure monitoring device 20; By gas channel sealing in valve body after capsule expands, after reducing, passage is opened, and cover gas is discharged through valve body.
Pressure monitoring device 20 comprises controller 21, for detecting the pressure transducer 25 of cover atmospheric pressure; Controller 21 is connected with piston drive mechanism 5, works to be clamp-oned or sucking-off capsule by the hydraulic oil A in oil hydraulic cylinder 4 according to the measured value control piston driving mechanism 5 of pressure transducer 25.That is, when the cover atmospheric pressure that pressure transducer records exceedes setting warning value, controller starts piston drive mechanism, and piston is lifted, by the hydraulic oil sucking-off in capsule, and the release of cover gas; When the cover atmospheric pressure that pressure transducer records is less than setup pressure value, controller control piston driving mechanism works, and piston is fallen, hydraulic oil is clamp-oned capsule closed valve gas channel.Pressure transducer 25 is arranged in the gas channel of valve body 1.
Piston drive mechanism 5 is linkage mechanism, and linkage mechanism comprises support 5.1, depression bar 5.2 and depression bar driving mechanism 9, and depression bar 5.2 one end is hinged on support 5.1, and the other end of depression bar 5.2 is connected with depression bar driving mechanism 9; Be hinged with the piston rod of piston-type hydraulic cylinder 4 in the middle of depression bar 5.2; Controller 21 is connected with described depression bar driving mechanism 9, and controls depression bar driving mechanism 9 work and lift or fall depression bar 5.2, and then drives the piston up-down of piston-type hydraulic cylinder 4.
Wherein, depression bar driving mechanism 9 is reducing motor, screw rod and nut; Or reducing motor, leading screw and nut; Or depression bar driving mechanism 9 is two-way hydraulic cylinder.
And be provided with Compress Spring 6 in piston-type hydraulic cylinder 4, on the piston rod in this spring suit plunger backer face.
In addition, piston drive mechanism also cocoa thinks two-way hydraulic cylinder, and the piston rod of two-way hydraulic cylinder is connected with the piston rod of piston-type hydraulic cylinder, Direct driver piston hydraulic cylinder working.
Below only describe several preferred embodiments of the application by reference to the accompanying drawings, but the application is not limited thereto, every those of ordinary skill in the art are under the spirit not departing from the application, and any improvement made and/or distortion, all belong to the protection domain of the application.
Claims (7)
1. an Intelligent control type cover gas pressure-limit valve, it is characterized in that, it comprises valve body, capsule assembly and seal control device; Be provided with gas channel in valve body, described capsule assembly is arranged in this gas channel; Seal control device comprises piston-type hydraulic cylinder, piston drive mechanism and pressure monitoring device; The hydraulic oil chamber of oil hydraulic cylinder is communicated with capsule assembly; Pressure monitoring device works according to the pressure control piston driving mechanism of cover gas, by the capsule of capsule assembly described in the hydraulic oil press-in in oil hydraulic cylinder or sucking-off; By described channel seal after capsule expands, after reducing, passage is opened, and cover gas is discharged through valve body.
2. pressure-limit valve as claimed in claim 1, is characterized in that, described pressure monitoring device comprises controller, for detecting the pressure transducer of cover atmospheric pressure; Controller is connected with described piston drive mechanism, controls described piston drive mechanism work clamp-oned or capsule described in sucking-off by the hydraulic oil in described oil hydraulic cylinder according to the measured value of pressure transducer.
3. pressure-limit valve as claimed in claim 1, it is characterized in that, described piston drive mechanism is two-way hydraulic cylinder, and the piston rod of described two-way hydraulic cylinder is connected with the piston rod of described piston-type hydraulic cylinder.
4. pressure-limit valve as claimed in claim 2, it is characterized in that, described piston drive mechanism is linkage mechanism, and linkage mechanism comprises support, depression bar and depression bar driving mechanism, and depression bar one end is hinged on support, and the other end of depression bar is connected with described depression bar driving mechanism; Be hinged with the piston rod of described piston-type hydraulic cylinder in the middle of depression bar; Described controller controls the work of described depression bar driving mechanism and lifts or fall described depression bar, and then drives the piston up-down of piston-type hydraulic cylinder.
5. pressure-limit valve as claimed in claim 4, it is characterized in that, described depression bar driving mechanism comprises reducing motor, screw rod and nut; Or comprise reducing motor, leading screw and nut; Or described depression bar driving mechanism is two-way hydraulic cylinder.
6. pressure-limit valve as claimed in claim 1, is characterized in that, be provided with Compress Spring in described piston-type hydraulic cylinder, on the piston rod in this spring suit plunger backer face.
7. pressure-limit valve as claimed in claim 2, it is characterized in that, described pressure transducer is arranged in the gas channel of described valve body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520259257.9U CN204611003U (en) | 2015-04-27 | 2015-04-27 | A kind of Intelligent control type cover gas pressure-limit valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520259257.9U CN204611003U (en) | 2015-04-27 | 2015-04-27 | A kind of Intelligent control type cover gas pressure-limit valve |
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| Publication Number | Publication Date |
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| CN204611003U true CN204611003U (en) | 2015-09-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201520259257.9U Active CN204611003U (en) | 2015-04-27 | 2015-04-27 | A kind of Intelligent control type cover gas pressure-limit valve |
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| Country | Link |
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| CN (1) | CN204611003U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105738092A (en) * | 2016-02-04 | 2016-07-06 | 潍柴动力股份有限公司 | Pressure-limiting valve fatigue test device and method |
-
2015
- 2015-04-27 CN CN201520259257.9U patent/CN204611003U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105738092A (en) * | 2016-02-04 | 2016-07-06 | 潍柴动力股份有限公司 | Pressure-limiting valve fatigue test device and method |
| CN105738092B (en) * | 2016-02-04 | 2018-03-13 | 潍柴动力股份有限公司 | A kind of pressure limiting valve fatigue experimental device and method |
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