CN203685783U - Pressure maintaining and stabilizing control system for control loop of steel plate pre-bending machine - Google Patents
Pressure maintaining and stabilizing control system for control loop of steel plate pre-bending machine Download PDFInfo
- Publication number
- CN203685783U CN203685783U CN201320795154.5U CN201320795154U CN203685783U CN 203685783 U CN203685783 U CN 203685783U CN 201320795154 U CN201320795154 U CN 201320795154U CN 203685783 U CN203685783 U CN 203685783U
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- China
- Prior art keywords
- control system
- valve
- control loop
- pressure maintaining
- steel plate
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- Expired - Fee Related
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- Bending Of Plates, Rods, And Pipes (AREA)
Abstract
The utility model provides a pressure maintaining and stabilizing control system for a control loop of a steel plate pre-bending machine. The pressure maintaining and stabilizing control system comprises a pressure maintaining and stabilizing control system body arranged on the control loop, wherein the pressure maintaining and stabilizing control system body comprises an oil pump motor set and an energy accumulator connected with the oil pump motor set through a pipeline; an oil filter, an electromagnetic overflow valve, a non-return valve, a reversing valve and a dual-contact pressure relay are arranged on the connection pipeline of the oil pump motor set and the energy accumulator in sequence; the oil outlet of the reversing valve is connected with the electromagnetic overflow valve; the dual-contact pressure relay is connected with the control loop. The pressure maintaining and stabilizing control system is simple and convenient to adjust, reduces the possibility of heating, guarantees the decrease of the possibility of leakage, can guarantee the situation that a proportional direction valve and a logical valve of the control loop of the steel plate pre-bending machine are opened and closed normally, and improves the production efficiency of the overall production line.
Description
Technical field
The utility model relates to hydraulic control field, is specifically related to a kind of steel plate pre-bending machine control loop pressurize voltage-stabilization control system.
Background technique
Along with the smooth enforcement of China's transfering natural gas from the west to the east project, growing to the demand of gas pipeline, simultaneously also stricter to the quality requirement of gas pipeline.
Steel plate pre-bending machine is a visual plant in oil gas conveying steel pipe manufacture process, the height of its reliability directly affects the manufacturing efficiency of whole line, and this equipment is lower-moving type great tonnage hydraulic machine, hydraulic system adopts high frequency sound proportional direction valve and logical valve control, systematic comparison complexity, proportional direction valve and logical valve will guarantee normally to open and close, and must must be guaranteed by independent control loop and this independent control loop pressure the normal opening and closing of guarantee proportional direction valve and logical valve between 8MPa-16MPa; The control loop of general pressurize adopts German BOSCH-REXROTH accumulator to rush fuel tap, but because this valve regulation is cumbersome and heating is more severe, system heating easily causes seal ring aging, occurs system seepage; If long-time high temperature can cause fluid rotten, can not guarantee normal opening and closing of proportional direction valve and logical valve etc.
Model utility content
The purpose of this utility model is the shortcoming existing in prior art for solving, and a kind of pressurize voltage-stabilization control system of the normal opening and closing that can guarantee steel plate pre-bending machine hydraulic control circuit proportional direction valve and logical valve is provided.
For this reason, the utility model adopts following technological scheme: a kind of steel plate pre-bending machine control loop pressurize voltage-stabilization control system, comprise the pressurize voltage-stabilization control system being arranged on control loop, the accumulator that pressurize voltage-stabilization control system comprises Oil pump electrical machinery group, is connected with Oil pump electrical machinery group pipeline, on the connecting pipeline of described Oil pump electrical machinery group and accumulator, be provided with successively oil purifier, electromagnetic relief valve, one-way valve, selector valve, two point pressure relay, the oil outlet of described selector valve is connected with electromagnetic relief valve, and described two point pressure relay is connected with control loop.
Further, the rear end of described electromagnetic relief valve is provided with safety valve.
The beneficial effects of the utility model are: regulate simple and conveniently, minimizing system heating, guarantees that system seepage reduces, and can guarantee that steel plate pre-bending machine control loop proportional direction valve and logical valve normally open and close simultaneously, improves the manufacturing efficiency of integral production line.
Accompanying drawing explanation
Fig. 1 is the utility model structural representation.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further details.
As shown in Figure 1, a kind of steel plate pre-bending machine control loop pressurize voltage-stabilization control system, comprise the pressurize voltage-stabilization control system being arranged on control loop 5, the accumulator 8 that pressurize voltage-stabilization control system comprises Oil pump electrical machinery group 1, is connected with Oil pump electrical machinery group 1 pipeline, on the connecting pipeline of Oil pump electrical machinery group 1 and accumulator 8, be provided with successively oil purifier 2, electromagnetic relief valve 3, one-way valve 4, two point pressure relay 7, two point pressure relay 7 is connected with control loop 5.
Electromagnetic relief valve 3 is parallel with safety valve 6, when accumulator 8 damages or other valve has problem need tear valve when maintenance open, unclamps safety valve 6 screws, and pressure is laid down and torn valve maintenance open.
Working principle: start Oil pump electrical machinery group 1, electromagnetic relief valve 3 is charged, in the time that force value reaches the high point pressure 16MPa that two point pressure relay 7 arranges, electromagnetic relief valve 3 power-off, 1 drain charge of Oil pump electrical machinery group, one-way valve 4 guarantees that accumulator 8 constant pressures are constant; In the time that in control loop 5, other valves open or close, the pressure loss can make pressure decreased, in the time that pressure drops to the low point pressure 8MPa that two point pressure relay 7 arranges, electromagnetic relief valve 3 continues charged work, when pressure continues to be elevated to the high point pressure 16MPa that two point pressure relay 7 arranges, electromagnetic relief valve 3 power-off, 1 drain charge of Oil pump electrical machinery group, repeat this guarantee of work control loop X pressure and remain between 8 MPa-16MPa, assurance lathe is normally worked.
Claims (2)
1. a steel plate pre-bending machine control loop pressurize voltage-stabilization control system, comprise the pressurize voltage-stabilization control system being arranged on control loop, the accumulator that pressurize voltage-stabilization control system comprises Oil pump electrical machinery group, is connected with Oil pump electrical machinery group pipeline, it is characterized in that: on the connecting pipeline of described Oil pump electrical machinery group (1) and accumulator (8), be provided with successively oil purifier (2), electromagnetic relief valve (3), one-way valve (4), two point pressure relay (7), described two point pressure relay (7) is connected with control loop (5).
2. steel plate pre-bending machine control loop pressurize voltage-stabilization control system according to claim 1, is characterized in that: the rear end of described electromagnetic relief valve (3) is provided with safety valve (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320795154.5U CN203685783U (en) | 2013-12-06 | 2013-12-06 | Pressure maintaining and stabilizing control system for control loop of steel plate pre-bending machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320795154.5U CN203685783U (en) | 2013-12-06 | 2013-12-06 | Pressure maintaining and stabilizing control system for control loop of steel plate pre-bending machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203685783U true CN203685783U (en) | 2014-07-02 |
Family
ID=51007691
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320795154.5U Expired - Fee Related CN203685783U (en) | 2013-12-06 | 2013-12-06 | Pressure maintaining and stabilizing control system for control loop of steel plate pre-bending machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203685783U (en) |
-
2013
- 2013-12-06 CN CN201320795154.5U patent/CN203685783U/en not_active Expired - Fee Related
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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 |
Granted publication date: 20140702 Termination date: 20141206 |
|
| EXPY | Termination of patent right or utility model |