CN202646200U - Pressure compensator - Google Patents
Pressure compensator Download PDFInfo
- Publication number
- CN202646200U CN202646200U CN 201220229045 CN201220229045U CN202646200U CN 202646200 U CN202646200 U CN 202646200U CN 201220229045 CN201220229045 CN 201220229045 CN 201220229045 U CN201220229045 U CN 201220229045U CN 202646200 U CN202646200 U CN 202646200U
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- valve
- pressure
- integrated
- proportional reversing
- valve block
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Abstract
The utility model discloses a pressure compensator comprising a two-way pressure sensing valve, a proportional reversing valve and a shuttle valve which are arranged on an integrated valve block; an input pressure oil port joint, an oil return port joint, a first oil outlet joint and a second oil outlet joint are arranged on the integrated valve block; the proportional directional valve is of a plate structure and directly fixedly connected on the integrated valve block through the screws; the two-way pressure sensing valve and the shuttle valve are both cartridge valves, integrated to a whole and fixedly connected on the integrated valve block through the screws. The pressure compensator disclosed by the utility model is suitable for occasions of bigger load change and accurate operating speed in hydraulic systems, such as metallurgy, electricity, water conservancy, building, coal mine machinery.
Description
Technical field
The utility model relates to a kind of pressure compensator, particularly a kind of pressure compensator.
Background technique
Jinghong ship machine leveling/equilibrium liquid pressing system is divided into leveling hydraulic system and equilibrium liquid pressing system, two group systems are action and the speed that hydraulic power unit passing ratio valve is controlled oil cylinder, two group systems are respectively established the action of 64 oil cylinders of 4 hydraulic power unit control, and 64 oil cylinders of every group system connect together by the wire rope on the reel, system is in operation along with the characteristic of the flexible and wire rope of oil cylinder, the load of every oil cylinder is negative load and has larger variation and fluctuation, steady, reliable, controlled particularly important based on this system's running.
The similar system such as some at present domestic ship lifts, mining machinery is the conventional control mode of Proportional valve+equilibrium valve+oil cylinder, the phenomenons such as the load operation speed that the variation owing to load causes is uncontrollable, system vibration can appear in system, but there is no good solution in the prior art.
The model utility content
The technical problem that the utility model solves is to provide a kind of and can compensates because the pressure compensator of the variation Comparative Examples valve output performance impact of load.
The technical solution that realizes the utility model purpose is: a kind of pressure compensator, comprise two-way pressure sensing valve, proportional reversing valve and shuttle valve, described two-way pressure sensing valve, proportional reversing valve and shuttle valve all are arranged on the integrated valve block, and pressure port connection, return opening joint, the first fuel discharge port and second fuel discharge port of input is set on this integrated valve block.Described proportional reversing valve is plank frame, directly is connected on the integrated valve block by screw.Two-way pressure sensing valve and shuttle valve are cartridge valve, the two integrated as a wholely is fixed on the integrated valve block by screw.
The utility model compared with prior art, its remarkable advantage is: 1) pressure compensator of the present utility model can be used in Jinghong ship lift leveling/equilibrium liquid pressing system, after adopting the utility model, the movement velocity of leveling/equilibrium liquid pressing system oil cylinder does not change with the variation of induced pressure, the motion of oil cylinder tends to be steady, and can accurately control, having improved the control performance of system, system operates steadily; 2) the utility model is applicable in the hydraulic systems such as metallurgy, electric power, water conservancy, building, coal mine machinery the large and accurate occasion of motion speed of load variations.
Below in conjunction with accompanying drawing the utility model is described in further detail.
Description of drawings
Fig. 1 is pressure compensator schematic diagram of the present utility model.
Fig. 2 is pressure compensator structural drawing of the present utility model.
Embodiment
In conjunction with Fig. 1, Fig. 2, a kind of pressure compensator of the present utility model, comprise two-way pressure sensing valve 1, proportional reversing valve 2 and shuttle valve 3, described two-way pressure sensing valve 1, proportional reversing valve 2 and shuttle valve 3 all are arranged on the integrated valve block 8, and pressure port connection 4, return opening joint 5, the first fuel discharge port 6 and second fuel discharge port 7 of input is set on this integrated valve block 8.
Described proportional reversing valve 2 is plank frame, directly is connected on the integrated valve block 8 by screw.
Two-way pressure sensing valve 1 and shuttle valve 3 are cartridge valve, the two integrated as a wholely is fixed on the integrated valve block 8 by screw.
Pressure compensator of the present utility model is by the valve Combination application of proportional reversing valve 2, shuttle valve 1, two-way pressure sensing valve 3 these several functions.The rated pressure of system is introduced the back cavity of proportional reversing valve 2 by two-way pressure sensing valve+shuttle valve Combination application, so just can guarantee the constant pressure of the back cavity of proportional reversing valve 2, be that proportional reversing valve 2 front and back pressure reduction go to zero, both compensated the pressure drop of proportional reversing valve 2 itself, compensated again the pressure variation that load variations causes, thereby proportional reversing valve 2 is under the more constant pressure difference environment all the time work, guarantee the accurate control of proportional reversing valve 2.
When pressure compensator not being set, system is when work, the pressure port connection 4 of input passes into pressure oil, the pressure of the first fuel discharge port 6 is the pressure of load, when load changes, the pressure that the first fuel discharge port of proportional reversing valve 2 is 6 mouthfuls can change to some extent, then can cause the variation of chamber, proportional reversing valve 2 front and back pressure reduction, thereby affects the output performance of proportional reversing valve 2.After having increased two-way pressure sensing valve 1, pass through pressure compensator, when the pressure of load changes, still select the pressure of the pressure oil of two-way pressure sensing valve 1 to add to 6 mouthfuls of proportional reversing valve, so just can guarantee pressure reduction constant of valve port before and after the proportional reversing valve, thereby can obtain the speed of more accurate load, make the speed of load not be subjected to the impact of load variations.
The utility model is comprised of proportional reversing valve 2, shuttle valve 3, two-way pressure sensing valve 1, these three kinds of valves are integrated as a whole by an integrated valve block 8, only need in use the pressure hydraulic fluid port of power source is connected with the pressure port connection 4 of input, return opening is connected with 5 mouthfuls of return opening joints, the rod chamber rodless cavity of actuator and the first fuel discharge port 6 be connected fuel discharge port 7 and be connected and get final product, it is convenient to use.Wherein proportional reversing valve 2 directly is installed on the integrated valve block 8 by screw for plank frame, and shuttle valve 3, two-way pressure sensing valve 1 are plug-in type, and the two is integrated into an integrated straight and connected screw and be installed on the integrated valve block 8.When the pressure of actuator's the first fuel discharge port 6 changes, effect by shuttle valve 3 and two-way pressure difference sensing valve 1 guarantees that the pressure of pressure port connection 4 pressure oils that pressure that the pressure of proportional reversing valve 2 outlet A is always system and provides is namely inputted just can guarantee that like this pressure reduction of Proportional valve front and back valve port is constant, thereby make the constant flow of Proportional valve output, can obtain the speed of more accurate load, make the speed of load not be subjected to the impact of load variations.
Ship lift leveling in the past/equilibrium liquid pressing system adoption rate valve is directly controlled the method for oil cylinder speed, because the variation of load trend large and that change is more random in the course of the work, thereby can't control the speed of oil cylinder accurately, thereby reduced the performance of whole equipment.The utility model patent should be able to be used for Jinghong ship lift leveling/equilibrium liquid pressing system, and this ship machine is First water conservancy formula ship lift in the world.After adopting the utility model, the movement velocity of leveling/equilibrium liquid pressing system oil cylinder does not change with the variation of induced pressure, and the motion of oil cylinder tends to be steady, and can accurately control, and has improved the control performance of system, and system operates steadily.
Claims (3)
1. pressure compensator, it is characterized in that, comprise two-way pressure sensing valve [1], proportional reversing valve [2] and shuttle valve [3], described two-way pressure sensing valve [1], proportional reversing valve [2] and shuttle valve [3] all are arranged on the integrated valve block [8], and pressure port connection [4], return opening joint [5], the first fuel discharge port [6] and second fuel discharge port [7] of input is set on this integrated valve block [8].
2. pressure compensator according to claim 1 is characterized in that, described proportional reversing valve [2] is plank frame, directly is connected on the integrated valve block [8] by screw.
3. pressure compensator according to claim 1 and 2 is characterized in that, two-way pressure sensing valve [1] and shuttle valve [3] are cartridge valve, the two integrated as a wholely is fixed on the integrated valve block [8] by screw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220229045 CN202646200U (en) | 2012-05-21 | 2012-05-21 | Pressure compensator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220229045 CN202646200U (en) | 2012-05-21 | 2012-05-21 | Pressure compensator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202646200U true CN202646200U (en) | 2013-01-02 |
Family
ID=47415316
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220229045 Expired - Fee Related CN202646200U (en) | 2012-05-21 | 2012-05-21 | Pressure compensator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202646200U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108757595A (en) * | 2018-08-01 | 2018-11-06 | 本钢板材股份有限公司 | A kind of oil cylinder working-pressure compensator buffer loop |
-
2012
- 2012-05-21 CN CN 201220229045 patent/CN202646200U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108757595A (en) * | 2018-08-01 | 2018-11-06 | 本钢板材股份有限公司 | A kind of oil cylinder working-pressure compensator buffer loop |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130102 Termination date: 20150521 |