CN205605942U - Relief valve hydraulic control system - Google Patents
Relief valve hydraulic control system Download PDFInfo
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- CN205605942U CN205605942U CN201620419362.9U CN201620419362U CN205605942U CN 205605942 U CN205605942 U CN 205605942U CN 201620419362 U CN201620419362 U CN 201620419362U CN 205605942 U CN205605942 U CN 205605942U
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- control system
- valve
- hydraulic control
- oil pump
- cylinder barrel
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Abstract
The utility model provides a relief valve hydraulic control system, including the relief valve, the relief valve includes and is located the cylinder piston in the cylinder is located the steel ball of piston one end tip, still include with the hydraulic control system that the cylinder hydraulic fluid port is connected, hydraulic control system includes: the oil pump, the drive oil pump pivoted power supply, be located the overflow valve of oil pump oil -out, the export of overflow valve connects the oil tank, be located the oil pump with solenoid valve between the cylinder, be located the energy storage ware of the hydraulic fluid port of cylinder. The utility model provides a relief valve hydraulic control system, but the cracking pressure of remote control relief valve, and the pressure adjustment is simple and convenient, safety.
Description
Technical field
This utility model relates to petroleum equipment field, in particular to a kind of safety valve hydraulic control system.
Background technology
At present, high pressure pipe joint and the pressure break delivery side of pump of petroleum equipment are assembled with relief valve, the effect of relief valve is when the outlet system pressure of high pressure pipe joint and fracturing pump is up to or over setting value, relief valve automatically turns on, guarantee manifold and fracturing pump less than setting pressure, it is ensured that equipment normal operation under safe pressure.
Fig. 1 is the safety valve structure schematic diagram of steel ball form in prior art.As shown in fig. 1, between high pressure chest H and low pressure chamber L of relief valve, there is a valve steel ball, the resilient force that active force that steel ball bottom is formed by high pressure chest, steel ball top are formed after being compressed by butterfly spring (or spring).Under normal circumstances, elastic force is more than the active force of high pressure chest, and valve is closed；When elastic force is less than the active force of high pressure chest, valve opening, thus the pressure drop of high pressure chest is got off.The pressure regulation of relief valve changes butterfly spring (or spring) rigidity and decrement by bolt (or screw) compression butterfly spring (or spring).
Owing to high pressure pipe joint and compression pump outlet pressure are big, generally up to 100MPa, in order to meet use requirement, rigidity and the decrement of butterfly spring (or spring) are generally large, need the biggest power, and may often be such that requirement repeatedly adjusts during regulation bolt.And, if high pressure chest has residual pressure, tighten regulation bolt by extremely difficult, the most dangerous；This by regulation bolt change unlatching pressure by the way of be also not easy to remotely control.
Therefore it provides the unlatching pressure of a kind of remote controlled relief valve, and the safety valve hydraulic control system that pressure regulation is easy, safe, it is the technical problems to be solved in the utility model.
Utility model content
Technical problem to be solved in the utility model is, it is provided that a kind of safety valve hydraulic control system, the unlatching pressure of remote controlled relief valve, and pressure regulation is easy, safety.
In view of this, this utility model provides a kind of safety valve hydraulic control system, and including relief valve, described relief valve includes cylinder barrel 1, is positioned at the piston 11 in described cylinder barrel 1, is positioned at the steel ball 12 of end, described piston 11 one end；Also including the hydraulic control system being connected with described cylinder barrel 1 hydraulic fluid port, described hydraulic control system includes: oil pump 22；Drive the power source 21 that described oil pump 22 rotates；It is positioned at the overflow valve 25 of described oil pump 22 oil-out, the outlet connected tank of described overflow valve 25；Electromagnetic valve 23 between described oil pump 22 and described cylinder barrel 1；It is positioned at the accumulator 28 of described cylinder barrel 1 hydraulic fluid port.
Preferably, the stop valve 26 between described oil pump 22 and described cylinder barrel 1 is also included.
Preferably, the Pressure gauge 27 between described oil pump 22 and described cylinder barrel 1 is also included.
Preferably, the filter being positioned at the outlet of described oil pump 22 is also included.
Preferably, the damping hole being positioned at described cylinder barrel 1 hydraulic fluid port is also included.
Preferably, the check valve being positioned at described electromagnetic valve 23 with described accumulator 28 is also included.
Preferably, described electromagnetic valve 23 is two four-way electromagnetics.
Preferably, described electromagnetic valve 23 includes oil inlet P mouth, oil return inlet T mouth and actuator port A mouth；Described electromagnetic valve 23 includes ending position and two, position of conducting working position；When described electromagnetic valve 23 is operated in described cut-off position, described oil inlet P mouth turns on described oil return inlet T mouth.
Preferably, described power source 21 is motor or electromotor.
In sum, the safety valve hydraulic control system that this utility model provides, the unlatching pressure of remote controlled relief valve, and pressure regulation is easy, safety.
Accompanying drawing explanation
Fig. 1 is the structural representation of the relief valve of steel ball form in prior art；
Fig. 2 is the structural representation of safety valve hydraulic control system one embodiment provided by the utility model；
Wherein, in Fig. 1 to Fig. 2, corresponding relation between reference and component names is:
1 cylinder barrel；11 pistons；12 steel balls；21 power sources；22 oil pumps；23 electromagnetic valves；24 check valves；25 overflow valves；26 stop valves；27 Pressure gauges；28 accumulators；29 damping holes.
Detailed description of the invention
In order to be more clearly understood that above-mentioned purpose of the present utility model, feature and advantage, with detailed description of the invention, this utility model is further described in detail below in conjunction with the accompanying drawings.It should be noted that in the case of not conflicting, the feature in embodiments herein and embodiment can be mutually combined.
Elaborate a lot of detail in the following description so that fully understanding this utility model; but; this utility model can be implemented to use other to be different from other modes described here, and therefore, protection domain of the present utility model is not limited by following public specific embodiment.
Fig. 2 shows an embodiment of the safety valve hydraulic control system that this utility model provides.This utility model provides a kind of safety valve hydraulic control system, and including relief valve, described relief valve includes cylinder barrel 1, is positioned at the piston 11 in described cylinder barrel 1, is positioned at the steel ball 12 of end, described piston 11 one end；Also including the hydraulic control system being connected with described cylinder barrel 1 hydraulic fluid port, described hydraulic control system includes: oil pump 22；Drive the power source 21 that described oil pump 22 rotates；It is positioned at the overflow valve 25 of described oil pump 22 oil-out, the outlet connected tank of described overflow valve 25；Electromagnetic valve 23 between described oil pump 22 and described cylinder barrel 1；It is positioned at the accumulator 28 of described cylinder barrel 1 hydraulic fluid port.
The operation principle of the safety valve hydraulic control system that this embodiment is provided is: during relief valve work, oil pump is at the effect down feed system fuel feeding of power source, electromagnetic valve work is in conducting position, the oil of oil pump feed system is first filled with in accumulator, piston is in hydraulic control system under the effect of pressure oil, steel ball is produced one with high pressure chest pressure oil (or water or other medium) produced by the active force that resists of pressure initiation, because the existence of accumulator, piston has active force to act on steel ball always；Simultaneously, high pressure chest pressure oil (or water or other medium) has an active force upwards to steel ball, when piston to the active force of steel ball more than high pressure chest pressure oil (or water or other medium) to the active force of steel ball time, relief valve valve port is constantly in closed mode.If high pressure chest pressure constantly rises, when piston to the active force of steel ball equal to high pressure chest pressure oil (or water or other medium) to the active force of steel ball time, valve port is in critical state；If high pressure chest pressure persistently rises to the high pressure chest pressure oil (or water or other medium) active force to steel ball more than the piston active force to steel ball, valve port is opened, high pressure chest pressure oil (or water or other medium) flows into low pressure chamber, so far, the pressure of high pressure chest no longer rises, in this manner it is possible to limit high pressure chest pressure in setting value.
It is additionally provided with overflow valve at oil delivery side of pump, by regulating the pressure of this overflow valve, the size of this utility model provided safe hydraulic pressure control system oil circuit pressure can be provided, thus the active force that regulating piston is to steel ball, the most just have adjusted the unlatching pressure of relief valve valve port.Therefore, safety valve hydraulic control system provided by the utility model, the unlatching pressure of remote controlled relief valve, need not manually go to regulate bolt and adjust the opening force of relief valve, it is not necessary to the high-pressure system that artificial nearly body contact is dangerous, pressure regulation is easy, safety.
In above-described embodiment, as the preferred technical scheme of one, also include the stop valve 26 between described oil pump 22 and described cylinder barrel 1.
In this embodiment, being also provided with stop valve, when needs are to high pressure chest pressure release, open stop valve, the pressure of accumulator is all discharged to zero, and piston no longer has pressure to be applied on steel ball, and high pressure chest communicates completely with low pressure chamber, thus realizes the pressure release to high pressure chest.The technical scheme that this embodiment is provided, further increases the practicality of safety valve hydraulic control system provided by the utility model.
In above-described embodiment, as the preferred technical scheme of one, also include the Pressure gauge 27 between described oil pump 22 and described cylinder barrel 1.Further, the filter being positioned at the outlet of described oil pump 22 is also included.Further, the damping hole being positioned at described cylinder barrel 1 hydraulic fluid port is also included.
In this embodiment, Pressure gauge, filter, the setting of damping hole are all to promote systematic function further.By arranging Pressure gauge, the unlatching pressure information of relief valve can be obtained at any time；By arranging filter, the quality of system pressure oil can be improved.By arranging damping hole, can improve the fretting performance of system further, that reduces hydraulic control system vibrates the impact on relief valve.
In above-described embodiment, as the preferred technical scheme of one, also include the check valve being positioned at described electromagnetic valve 23 with described accumulator 28.
In this embodiment, between electromagnetic valve and accumulator, it is additionally provided with check valve, when electromagnetic valve work is when turning on position, the unlatching of relief valve valve port, and under the effect of check valve, hydraulic return can not return to fuel pump outlet, impact oil pump and overflow valve.The practicality of this utility model provided safety valve hydraulic control system is provided further.
In above-described embodiment, as the preferred technical scheme of one, described electromagnetic valve 23 is two four-way electromagnetics.Further, described electromagnetic valve 23 includes oil inlet P mouth, oil return inlet T mouth and actuator port A mouth；Described electromagnetic valve 23 includes ending position and two, position of conducting working position；When described electromagnetic valve 23 is operated in described cut-off position, described oil inlet P mouth turns on described oil return inlet T mouth.
In this embodiment, when electromagnetic valve work is when ending position, owing to now P mouth and T mouth are conductings, hydraulic oil can direct oil sump tank.
In above-described embodiment, as the preferred technical scheme of one, described power source 21 is motor or electromotor.
In sum, the safety valve hydraulic control system that this utility model provides, the unlatching pressure of remote controlled relief valve, and pressure regulation is easy, safety.
The foregoing is only preferred embodiment of the present utility model, be not limited to this utility model, for a person skilled in the art, this utility model can have various modifications and variations.All within spirit of the present utility model and principle, any modification, equivalent substitution and improvement etc. made, within should be included in protection domain of the present utility model.
Claims (9)
1. a safety valve hydraulic control system, including relief valve, it is characterised in that described relief valve bag
Include cylinder barrel (1), the piston (11) being positioned in described cylinder barrel (1), it is positioned at described piston (11) one end
The steel ball (12) of end；Also include the hydraulic control system being connected with described cylinder barrel (1) hydraulic fluid port, described
Hydraulic control system includes:
Oil pump (22)；
Drive the power source (21) that described oil pump (22) rotates；
Being positioned at the overflow valve (25) of described oil pump (22) oil-out, the outlet of described overflow valve (25) connects
Fuel tank；
The electromagnetic valve (23) being positioned between described oil pump (22) and described cylinder barrel (1)；
It is positioned at the accumulator (28) of described cylinder barrel (1) hydraulic fluid port.
Safety valve hydraulic control system the most according to claim 1, it is characterised in that also include position
Stop valve (26) between described oil pump (22) and described cylinder barrel (1).
Safety valve hydraulic control system the most according to claim 1, it is characterised in that also include position
Pressure gauge (27) between described oil pump (22) and described cylinder barrel (1).
Safety valve hydraulic control system the most according to claim 1, it is characterised in that also include position
In the filter that described oil pump (22) exports.
Safety valve hydraulic control system the most according to claim 1, it is characterised in that also include position
Damping hole in described cylinder barrel (1) hydraulic fluid port.
Safety valve hydraulic control system the most according to claim 1, it is characterised in that also include position
Check valve in described electromagnetic valve (23) Yu described accumulator (28).
Safety valve hydraulic control system the most according to claim 1, it is characterised in that described electromagnetism
Valve (23) is two four-way electromagnetics.
Safety valve hydraulic control system the most according to claim 1, it is characterised in that described electromagnetism
Valve (23) includes oil inlet P mouth, oil return inlet T mouth and actuator port A mouth；Described electromagnetic valve (23)
Including cut-off position and two, position of conducting working position；When described electromagnetic valve (23) is operated in described cut-off position,
Described oil inlet P mouth turns on described oil return inlet T mouth.
Safety valve hydraulic control system the most according to claim 1, it is characterised in that described power
Source (21) is motor or electromotor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620419362.9U CN205605942U (en) | 2016-05-10 | 2016-05-10 | Relief valve hydraulic control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620419362.9U CN205605942U (en) | 2016-05-10 | 2016-05-10 | Relief valve hydraulic control system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205605942U true CN205605942U (en) | 2016-09-28 |
Family
ID=56966747
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620419362.9U Active CN205605942U (en) | 2016-05-10 | 2016-05-10 | Relief valve hydraulic control system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205605942U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107631026A (en) * | 2017-10-25 | 2018-01-26 | 中国第汽车股份有限公司 | The safety valve and screen pack integrating device of hydraulic control valve plate |
| US10527068B2 (en) | 2017-08-18 | 2020-01-07 | Expro Americas, Llc | System for hydraulic pressure relief valve operation |
-
2016
- 2016-05-10 CN CN201620419362.9U patent/CN205605942U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10527068B2 (en) | 2017-08-18 | 2020-01-07 | Expro Americas, Llc | System for hydraulic pressure relief valve operation |
| CN107631026A (en) * | 2017-10-25 | 2018-01-26 | 中国第汽车股份有限公司 | The safety valve and screen pack integrating device of hydraulic control valve plate |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 102206 31 Industrial Park, North Qing Road, Beijing, Changping District Patentee after: Sany Heavy Energy Co.,Ltd. Address before: 102206 31 Industrial Park, North Qing Road, Beijing, Changping District Patentee before: SANY HEAVY ENERGY Co.,Ltd. Address after: 102206 31 Industrial Park, North Qing Road, Beijing, Changping District Patentee after: SANY HEAVY ENERGY Co.,Ltd. Address before: 102206 31 Industrial Park, North Qing Road, Beijing, Changping District Patentee before: SANY HEAVY ENERGY EQUIPMENT Co.,Ltd. |