CN213088893U - Novel high-pressure gate valve driver - Google Patents
Novel high-pressure gate valve driver Download PDFInfo
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- CN213088893U CN213088893U CN202021229047.2U CN202021229047U CN213088893U CN 213088893 U CN213088893 U CN 213088893U CN 202021229047 U CN202021229047 U CN 202021229047U CN 213088893 U CN213088893 U CN 213088893U
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Abstract
The utility model relates to a valve drive technical field provides a novel high-pressure slide valve driver, include: the device comprises a cylinder barrel, a piston assembly, a piston rod, an inflation valve, a hydraulic pipeline and an adjustable throttle valve; a piston rod is arranged in the cylinder barrel, a piston assembly is arranged on the piston rod, and the piston assembly can move up and down; a cylinder head assembly for buffering is arranged below the piston assembly; the bottom of the piston rod is connected with a driving shaft of the high-pressure gate valve through a gate shaft connecting piece; the upper part of the cylinder barrel is provided with an inflation valve, and a nitrogen cavity is formed among the inner wall of the cylinder barrel, the piston rod and the upper end face of the piston assembly; the lower part of the cylinder barrel is provided with an oil inlet which is communicated with a hydraulic pipeline through the oil inlet, and the hydraulic pipeline is provided with an adjustable throttle valve; a hydraulic cavity is formed among the inner wall of the cylinder barrel, the piston rod, the lower end face of the piston assembly and the upper end face of the cylinder head assembly; the bottom of the cylinder barrel is fixed with the high-pressure gate valve. The utility model discloses can improve the drive effect of high-pressure slide valve, improve production efficiency.
Description
Technical Field
The utility model relates to a valve drive technical field especially relates to a novel high pressure slide valve driver.
Background
The emergency closing remote hydraulic high-pressure gate valve used in the petroleum fracturing high-pressure pipeline in China mostly adopts a double-acting oil cylinder as a gate opening and closing driving device and needs two hydraulic driving oil ways.
FIG. 1 is a schematic diagram of a prior art dual acting cylinder gate valve actuator. As shown in fig. 1, the double-acting cylinder gate valve driver has the following disadvantages in field use: firstly, the number of hydraulic pipelines is large, and a control device is relatively complex; secondly, the opening and the closing of the valve need a hydraulic power unit to provide a power source, so that energy is not saved; thirdly, the overall dimension is large, the weight is heavy and the cost is high.
SUMMERY OF THE UTILITY MODEL
The utility model discloses mainly solve technical problem such as prior art double-acting cylinder slide valve driver hydraulic pressure pipeline is in large quantity, controlling means is complicated relatively, provide a novel high-pressure slide valve driver, can realize that high-pressure slide valve opens, closes when hydraulic drive, improve high-pressure slide valve's drive effect, improve production efficiency.
The utility model provides a novel high-pressure slide valve driver, include: the device comprises a cylinder barrel (2), a piston assembly (3), a piston rod (7), an inflation valve (12), a hydraulic pipeline (13) and an adjustable throttle valve (9);
a piston rod (7) is arranged in the cylinder barrel (2), a piston assembly (3) is arranged on the piston rod (7), and the piston assembly (3) can move up and down; a cylinder head assembly (4) for buffering is arranged below the piston assembly (3); the bottom of the piston rod (7) is connected with a driving shaft of a high-pressure gate valve (15) through a gate shaft connecting piece (6);
an inflation valve (12) is arranged at the upper part of the cylinder barrel (2), and a nitrogen cavity (11) is formed among the inner wall of the cylinder barrel (2), the piston rod (7) and the upper end face of the piston assembly (3);
an oil inlet is formed in the lower portion of the cylinder barrel (2) and is communicated with a hydraulic pipeline (13) through the oil inlet, and an adjustable throttle valve (9) is arranged on the hydraulic pipeline (13); a hydraulic cavity is formed among the inner wall of the cylinder barrel (2), the piston rod (7), the lower end face of the piston assembly (3) and the upper end face of the cylinder head assembly (4);
the bottom of the cylinder barrel (2) is fixed with a high-pressure gate valve (15).
Preferably, a high-pressure shock-proof pressure gauge (8) is arranged on the hydraulic pipeline (13).
Preferably, a quick-change connector (10) is arranged at the input end of the hydraulic pipeline (13), and the quick-change connector (10) is used for being connected with a high-pressure rubber hose (14).
Preferably, the top of the piston rod (7) is provided with a cylinder tail assembly (1) for sealing.
Preferably, the bottom of the cylinder barrel (2) is fixed with a high-pressure gate valve (15) through a front flange (5).
The utility model provides a pair of novel high-pressure slide valve driver adopts the theory of operation that nitrogen-filled energy storage and hydraulic drive combined together, has realized that high-pressure slide valve opens when hydraulic drive, can the energy storage release when emergent closing, realizes that the pipeline cuts off fast.
Compared with the prior art, the utility model has the following advantage:
1. the utility model discloses a driver adopts the theory of operation that fills nitrogen energy storage ware, has prefilled high-pressure nitrogen gas in advance, and energy storage pressure release when emergent closing does not need the power supply to provide power and just can close, and is fast moreover, does not consume energy.
2. The closing force of the gate valve can be matched with the pre-charging pressure of different driver energy storage cavities according to different closing forces of the high-pressure gate valve, the requirement for the quick closing force of the gate valve during working is met, and one-time pressurizing is completed.
3. The flashboard valve opening oil way purchases a single-action hydraulic cylinder structure, only a single high-pressure rubber pipe is needed, hydraulic pipelines are saved, cost is saved, and field installation and maintenance are facilitated;
4. compared with the traditional gate valve hydraulic driver, the hydraulic driver has the advantages of small overall dimension, compact structure and light weight.
Drawings
FIG. 1 is a schematic structural view of a prior art dual acting cylinder gate valve actuator;
fig. 2 is a schematic structural diagram of the novel high-pressure gate valve driver provided by the present invention;
fig. 3 is a cross-sectional view of the novel high-pressure gate valve driver provided by the present invention.
Reference numerals: 1. a cylinder tail assembly; 2. a cylinder barrel; 3. a piston assembly; 4. a cylinder head assembly; 5. a front flange; 6. a ram shaft connection; 7. a piston rod; 8. a high-pressure shock-proof pressure gauge; 9. an adjustable throttle valve; 10. a quick-change connector; 11. a nitrogen chamber; 12. an inflation valve; 13. a hydraulic line; 14. a high-pressure rubber hose; 15. high-pressure gate valve.
Detailed Description
In order to make the technical problem solved by the present invention, the technical solution adopted by the present invention and the technical effect achieved by the present invention clearer, the present invention will be further described in detail with reference to the accompanying drawings and the embodiments. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some but not all of the relevant portions of the present invention are shown in the drawings.
Fig. 2 is a schematic structural diagram of the novel high-pressure gate valve driver provided by the present invention; fig. 3 is a cross-sectional view of the novel high-pressure gate valve driver provided by the present invention. As shown in fig. 2 and 3, the embodiment of the utility model provides a novel high-pressure gate valve driver, include: the device comprises a cylinder barrel 2, a piston assembly 3, a piston rod 7, an inflation valve 12, a hydraulic pipeline 13 and an adjustable throttle 9.
A piston rod 7 is arranged in the cylinder barrel 2, a piston assembly 3 is arranged on the piston rod 7, and the piston assembly 3 can move up and down; the cylinder head assembly 4 for buffering is arranged below the piston assembly 3, and the cylinder head assembly 4 adopts an anti-buffering structural form to prevent the high-pressure gate valve 15 from impacting when being closed. Piston rod 7 purchases the piston rod of standard specification, and the material is 45# surface chromium plating, and anticorrosive and wearability are good.
The top of the piston rod 7 is provided with a cylinder tail assembly 1 for sealing, and the cylinder tail assembly 1 realizes the external sealing of the piston rod 7 and the tail end. The bottom of the piston rod 7 is connected with a driving shaft of a high-pressure gate valve 15 through a gate shaft connecting piece 6. The gate shaft connecting piece 6 realizes butt joint of the piston rod 7 and a driving shaft of the high-pressure gate valve 15 and transmits the driving force for opening and closing the high-pressure gate valve 15.
An inflation valve 12 is arranged at the upper part of the cylinder barrel 2, and a nitrogen cavity 11 is formed among the inner wall of the cylinder barrel 2, the piston rod 7 and the upper end face of the piston assembly 3 and used for energy storage; and a hydraulic cavity is formed among the inner wall of the cylinder barrel 2, the piston rod 7, the lower end surface of the piston assembly 3 and the cylinder head assembly 4. The piston assembly 3 cannot be arranged on top of the piston rod 7. In this embodiment, the cylinder 2 bears the high pressure of the nitrogen chamber 11 and the hydraulic chamber, so that the piston rod 7 and the piston assembly 3, and the sealing member and the supporting member thereof can slide smoothly, thereby ensuring the sealing effect, and both ends adopt a threaded connection structure.
When the piston assembly 3 is pushed by hydraulic pressure to move upwards, the cylinder barrel 2 is divided into an upper cavity and a lower cavity (a nitrogen cavity 11 and a hydraulic cavity), reciprocating motion is carried out in the cylinder barrel 2 under the action of pressure oil and nitrogen, and the sealing ring of the piston assembly 3 adopts inlet sealing and has good sealing effect.
The lower portion of the cylinder barrel 2 is provided with an oil inlet, the hydraulic cavity is communicated with the hydraulic pipeline 13 through the oil inlet, the hydraulic pipeline 13 is provided with the adjustable throttle valve 9, and the speed of the high-pressure gate valve 15 during opening is controlled by the one-way adjustable throttle valve 9. The hydraulic chambers are supplied with oil via a hydraulic line 13. The bottom of the cylinder barrel 2 is fixed with a high-pressure gate valve 15 through a front flange 5. The front flange 5 realizes the connection between the driver and the high-pressure gate valve 15, and is convenient to install and overhaul.
On the basis of the scheme, the hydraulic pipeline 13 is provided with a high-pressure shock-proof pressure gauge 8. The high-pressure shock-proof pressure gauge 8 is convenient for on-site detection of the working pressure of the high-pressure gate valve 15 during inspection by on-site workers. The input end of the hydraulic pipeline 13 is provided with a quick-change connector 10, and the quick-change connector 10 is used for connecting a high-pressure rubber hose 14. When the quick-change connector 10 and the high-pressure gate valve 15 are overhauled or transported to a factory, the two ends of the quick change are separated, the valve core is automatically closed, leakage is prevented, pressure maintaining of the hydraulic cavity can be realized, and the opening state of the gate valve is ensured.
The embodiment of the utility model provides a novel high-pressure slide valve driver's working process:
when the high-pressure gate valve 15 is opened: the oil liquid passes through a high-pressure rubber tube 14, a quick-change connector 10, a one-way throttle valve 9 and a pressure gauge 8 and enters a hydraulic cavity from an oil port at the lower end of the cylinder barrel 2. When the pressure of the hydraulic power source reaches the pre-charging pressure of an energy accumulator configured by the hydraulic power source, the pressure loss of a pipeline is overcome, the piston assembly 3 starts to be pushed to move upwards, meanwhile, the gate shaft connecting piece 6 is driven to move upwards together, the high-pressure gate valve 15 is opened and gradually changes to a full-open state, and when the pressure reaches a set stroke, the high-pressure gate valve 15 stops moving, and at the moment, the high-pressure gate valve 15 is in the full-open state.
When the high-pressure gate valve 15 is closed: high-pressure oil in the cavity below the piston component 3 in the driver cylinder 2 directly returns to the oil tank through the high-pressure rubber tube 14, the pressure of the lower cavity is rapidly reduced to zero at the moment, meanwhile, high-pressure nitrogen of the nitrogen cavity 11 pushes the flashboard shaft connecting piece 6 to overcome the liquid resistance of a flashboard high-pressure pipeline, so that the flashboard moves towards the closing direction until the stroke end point is reached, the high-pressure flashboard valve 15 is in the full-closing position at the moment, and the stroke position detection switch can be added according to the requirement due to the full-opening and full-closing position control precision.
The novel high-pressure slide valve driver of this embodiment adopts the theory of operation that nitrogen charging energy storage and hydraulic drive combined together, has realized that high-pressure slide valve opens when hydraulic drive, and the pipeline of energy storage release is turn-offed the function fast when emergent closing.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: it is to be understood that modifications may be made to the technical solutions described in the foregoing embodiments, or some or all of the technical features may be equivalently replaced, without substantially departing from the scope of the technical solutions of the embodiments of the present invention.
Claims (5)
1. A novel high-pressure gate valve driver, characterized in that includes: the device comprises a cylinder barrel (2), a piston assembly (3), a piston rod (7), an inflation valve (12), a hydraulic pipeline (13) and an adjustable throttle valve (9);
a piston rod (7) is arranged in the cylinder barrel (2), a piston assembly (3) is arranged on the piston rod (7), and the piston assembly (3) can move up and down; a cylinder head assembly (4) for buffering is arranged below the piston assembly (3); the bottom of the piston rod (7) is connected with a driving shaft of a high-pressure gate valve (15) through a gate shaft connecting piece (6);
an inflation valve (12) is arranged at the upper part of the cylinder barrel (2), and a nitrogen cavity (11) is formed among the inner wall of the cylinder barrel (2), the piston rod (7) and the upper end face of the piston assembly (3);
an oil inlet is formed in the lower portion of the cylinder barrel (2) and is communicated with a hydraulic pipeline (13) through the oil inlet, and an adjustable throttle valve (9) is arranged on the hydraulic pipeline (13); a hydraulic cavity is formed among the inner wall of the cylinder barrel (2), the piston rod (7), the lower end face of the piston assembly (3) and the upper end face of the cylinder head assembly (4);
the bottom of the cylinder barrel (2) is fixed with a high-pressure gate valve (15).
2. A new high-pressure gate valve driver according to claim 1, characterized in that a high-pressure shock-proof pressure gauge (8) is arranged on said hydraulic line (13).
3. A new type of high-pressure gate valve drive according to claim 1 or 2, characterized in that the input of the hydraulic line (13) is provided with a quick-change coupling (10), the quick-change coupling (10) being used for connecting a high-pressure hose (14).
4. A new high-pressure gate valve drive according to claim 1, characterized in that the top of the piston rod (7) is provided with a cylinder tail assembly (1) for sealing.
5. A new high-pressure gate valve drive according to claim 1 or 4, characterized in that the bottom of the cylinder (2) is fixed with the high-pressure gate valve (15) by means of a front flange (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021229047.2U CN213088893U (en) | 2020-06-30 | 2020-06-30 | Novel high-pressure gate valve driver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021229047.2U CN213088893U (en) | 2020-06-30 | 2020-06-30 | Novel high-pressure gate valve driver |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213088893U true CN213088893U (en) | 2021-04-30 |
Family
ID=75621875
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021229047.2U Active CN213088893U (en) | 2020-06-30 | 2020-06-30 | Novel high-pressure gate valve driver |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213088893U (en) |
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2020
- 2020-06-30 CN CN202021229047.2U patent/CN213088893U/en active Active
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