CN201747689U - Pressure regulating device of hydraulic system - Google Patents
Pressure regulating device of hydraulic system Download PDFInfo
- Publication number
- CN201747689U CN201747689U CN2010205057639U CN201020505763U CN201747689U CN 201747689 U CN201747689 U CN 201747689U CN 2010205057639 U CN2010205057639 U CN 2010205057639U CN 201020505763 U CN201020505763 U CN 201020505763U CN 201747689 U CN201747689 U CN 201747689U
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- Prior art keywords
- valve
- hydraulic
- relief valve
- oil
- overflow valve
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- Expired - Fee Related
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Abstract
The utility model discloses a pressure regulating device of a hydraulic system, which comprises a manual pressure regulating unit; the manual pressure regulating unit comprises a hydraulic shuttle valve (2) and a manual overflow valve (4); two input ports of the hydraulic shuttle valve (2) are respectively connected with the oil inlet pipe and the oil outlet pipeline of a plunger variable oil pump (1), and the output port of the hydraulic shuttle valve is connected with the oil inlet of the manual overflow valve (4); the oil outlet port of the manual overflow valve (4) is connected with the oil inlet of a fixed value overflow valve (6); the oil outlet of the fixed value overflow valve (6) is accessed to a hydraulic oil tank (7); the pressure regulating device is also provided with an automatic pressure regulating unit; the automatic pressure regulating unit comprises a proportional overflow valve (3) and a proportional signal box (5); the oil inlet of the proportional overflow valve (3) is connected with the output port of the hydraulic shuttle valve (2), and the oil outlet of the proportional overflow valve is connected with the oil inlet of the fixed value overflow valve (6); and the signal output end of the proportional signal box (5) is connected with the signal input end of the proportional overflow valve (3). The pressure regulating device of the hydraulic system can automatically regulate the pressure of the hydraulic system, is convenient to use and improves the working efficiency.
Description
Technical field
The utility model relates to a kind of regulator, particularly, relates to a kind of regulator of hydraulic system.
Background technique
At present, mostly the used logging winch in oil field is the Closed Hydraulic Driving system, and the adjusting of system pressure is controlled by manual relief valve, connects manual relief valve in the high pressure side, and according to external load size manual tune, the overflow of control high pressure oil is finished system pressure and regulated.Because external load constantly changes, need frequent manual tune to obtain the requirement that certain system pressure satisfies weight in the cylinder winding shaft.The spillway discharge of high pressure oil is big, easily causes system's heating, needs powerful sink, increases system layout; Manual tune pressure relies on artificial judgement, low-response, and realization is accurate, the sharp work difficulty is bigger.
Summary of the invention
The purpose of this utility model is, at the problems referred to above, proposes a kind of regulator of hydraulic system, to realize the automatic Regulation of system, has reduced operation easier, has improved the Security of operation.
For achieving the above object, the technical solution adopted in the utility model is: a kind of regulator of hydraulic system, comprise the manual voltage regulation unit, described manual voltage regulation unit comprises hydraulic pressure shuttle valve and manual relief valve, two inlet openings of hydraulic pressure shuttle valve connect the in-line and the fuel-displaced pipeline of plunger variable oil pump respectively, the filler opening of the moving relief valve of its delivery outlet catcher, manually the oil outlet of relief valve connects hydraulic oil container, it is characterized in that: described regulator is provided with an automatic Regulation unit again, described automatic Regulation unit comprises proportional pressure control valve and scaling signal box, the filler opening of proportional pressure control valve connects the delivery outlet of hydraulic pressure shuttle valve, its oil outlet connects the filler opening of definite value relief valve, and the signal output part of described scaling signal box connects the signal input part of proportional pressure control valve.
Further, a definite value relief valve is set on the pipeline between proportional pressure control valve and the hydraulic oil container, the filler opening of definite value relief valve is connected with the oil outlet of proportional pressure control valve, its oil outlet is connected with hydraulic oil container, and the servocylinder of described plunger variable oil pump is connected with the filler opening of definite value relief valve.
The utility model has increased proportional pressure control valve and scaling signal box, regulator can be according to the scaling signal regulating system pressure that receives, realize the automatic Regulation of hydraulic system, improved the Security of working efficiency and production, increased the definite value relief valve simultaneously, in pilot pressure, reduced the discharge capacity of oil pump, made that the hydraulic system spillway discharge reduces, system's heating value reduces, and optimized hydraulic system.
Description of drawings
Accompanying drawing is used to provide further understanding of the present utility model, and constitutes the part of specification, is used from explanation the utility model with embodiment one of the present utility model, does not constitute restriction of the present utility model.In the accompanying drawings:
Fig. 1 is a working principle schematic representation of the present utility model.
In conjunction with the accompanying drawings, reference character is as follows among the utility model embodiment:
1-plunger variable oil pump; 2-hydraulic pressure shuttle valve; The 3-proportional pressure control valve; The manual relief valve of 4-; 5-scaling signal box; 6-definite value relief valve; The 7-hydraulic oil container.
Embodiment
Below in conjunction with accompanying drawing preferred embodiment of the present utility model is described, should be appreciated that preferred embodiment described herein only is used for description and interpretation the utility model, and be not used in qualification the utility model.
According to shown in Figure 1, the utility model comprises hydraulic pressure shuttle valve 2, proportional pressure control valve 3, manual relief valve 4, scaling signal box 5, definite value relief valve 6, hydraulic oil container 7.Hydraulic pressure shuttle valve 2 draws the high pressure of system to electric proportional pressure control valve 3 and manual relief valve 4, regulates the maximum pressure of manual relief valve 4 initialization systems, plays safety protection.Scaling signal box 5 receives external loads, calculates also output and satisfies load required pressure scaling signal, is transferred to proportional pressure control valve 3, proportional pressure control valve 3 according to signal determine its spool unlatching, close and open amount regulating system pressure.When system pressure be higher than scaling signal during given regulated value, the spool of proportional pressure control valve 3 is opened, the high pressure oil overflow, system pressure reduces, reach scaling signal during given regulated value the spool of proportional pressure control valve 3 close; When system pressure was low, plunger variable oil pump 1 itself improved system pressure, reach scaling signal given regulated value.The oil pressure relief that definite value relief valve 6 is set is 50bar, the pilot pressure (24-28bar) that is higher than plunger variable oil pump 1 inner servocylinder, when proportional pressure control valve 3 overflows, overflow fluid forms back pressure in the front of definite value relief valve 6, enter the servocylinder reaction oil pump swash plate of plunger variable oil pump 1, reduce oil pump capacity rapidly, avoid a large amount of fluid overflows, produce too much heat.
It should be noted that at last: the above only is preferred embodiment of the present utility model, be not limited to the utility model, although the utility model is had been described in detail with reference to previous embodiment, for a person skilled in the art, it still can be made amendment to the technological scheme that aforementioned each embodiment put down in writing, and perhaps part technical characteristics wherein is equal to replacement.All within spirit of the present utility model and principle, any modification of being done, be equal to replacement, improvement etc., all should be included within the protection domain of the present utility model.
Claims (2)
1. the regulator of a hydraulic system, comprise the manual voltage regulation unit, described manual voltage regulation unit comprises hydraulic pressure shuttle valve (2) and manual relief valve (4), two inlet openings of hydraulic pressure shuttle valve (2) connect the in-line and the fuel-displaced pipeline of plunger variable oil pump (1) respectively, the filler opening of the moving relief valve (4) of its delivery outlet catcher, manually the oil outlet of relief valve (4) connects the filler opening of definite value relief valve (6), the oil outlet of definite value relief valve (6) is received hydraulic oil container (7), it is characterized in that: described regulator is provided with an automatic Regulation unit again, described automatic Regulation unit comprises proportional pressure control valve (3) and scaling signal box (5), the filler opening of proportional pressure control valve (3) connects the delivery outlet of hydraulic pressure shuttle valve (2), its oil outlet connects the filler opening of definite value relief valve (6), and the signal output part of described scaling signal box (5) connects the signal input part of proportional pressure control valve (3).
2. the regulator of hydraulic system according to claim 1, it is characterized in that: on the pipeline between described proportional pressure control valve (3) and the hydraulic oil container (7) a definite value relief valve (6) is set, the filler opening of definite value relief valve (6) is connected with the oil outlet of proportional pressure control valve (3), its oil outlet is connected with hydraulic oil container (7), and the servocylinder of described plunger variable oil pump (1) is connected with the filler opening of definite value relief valve (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205057639U CN201747689U (en) | 2010-08-26 | 2010-08-26 | Pressure regulating device of hydraulic system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205057639U CN201747689U (en) | 2010-08-26 | 2010-08-26 | Pressure regulating device of hydraulic system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201747689U true CN201747689U (en) | 2011-02-16 |
Family
ID=43582368
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205057639U Expired - Fee Related CN201747689U (en) | 2010-08-26 | 2010-08-26 | Pressure regulating device of hydraulic system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201747689U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104033440A (en) * | 2014-06-26 | 2014-09-10 | 徐州重型机械有限公司 | Pressure regulating device and pressure regulating method for hydraulic system and crane |
| CN109296570A (en) * | 2018-10-25 | 2019-02-01 | 江苏谷登工程机械装备有限公司 | A kind of closed type hydraulic system of pressure adjustable |
-
2010
- 2010-08-26 CN CN2010205057639U patent/CN201747689U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104033440A (en) * | 2014-06-26 | 2014-09-10 | 徐州重型机械有限公司 | Pressure regulating device and pressure regulating method for hydraulic system and crane |
| CN109296570A (en) * | 2018-10-25 | 2019-02-01 | 江苏谷登工程机械装备有限公司 | A kind of closed type hydraulic system of pressure adjustable |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 065001 Yaohua Road, Langfang economic and Technological Development Zone, Langfang, Hebei Patentee after: Langfang Xin Pu Pu special equipment Co., Ltd. Address before: 065001 No. 32 Garden Road, Langfang economic and Technological Development Zone, Hebei Patentee before: Langfang Exploitation District Sincep Oilog Equipment Co., Ltd. |
|
| 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: 20110216 Termination date: 20190826 |