CN103671313A - Hydraulic pressing machine capable of machining transformer coil - Google Patents
Hydraulic pressing machine capable of machining transformer coil Download PDFInfo
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- CN103671313A CN103671313A CN201210314012.2A CN201210314012A CN103671313A CN 103671313 A CN103671313 A CN 103671313A CN 201210314012 A CN201210314012 A CN 201210314012A CN 103671313 A CN103671313 A CN 103671313A
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Abstract
A hydraulic pressing machine capable of machining a transformer coil comprises an oil tank which is connected with an oil inlet of a quantitative vane pump through a low pressure oil feeding pipeline, an oil outlet of the quantitative vane pump is connected with an oil inlet of a low pressure oil conveying pipeline, a low pressure inlet oil filter and a low pressure one-way valve capable of enabling hydraulic oil to flow towards the outlet end are sequentially arranged on the low pressure oil conveying pipeline in series from the inlet end to the outlet end, the section, located between the low pressure inlet oil filter and the low pressure one-way valve, of the low pressure oil conveying pipeline is connected with an oil inlet of a low pressure oil discharging pipeline, and the low pressure oil discharging pipeline is connected with a low pressure normally-open unloading electromagnetic relief valve in series. The hydraulic pressing machine capable of machining the transformer coil is high in production efficiency, and can avoid damage to winding insulation caused by imbalanced stress of the coil, avoid the situation that press power is too small to generate a large air gap to lead to eddy-current loss and flux leakage and therefore the transformer emits heat, avoid the situation that the press power is too large to damage wire insulation and cause deformation of a winding, and better guarantee quality of the transformer coil produced by the hydraulic pressing machine.
Description
Technical field
The present invention relates to a kind of hydraulic pressure press of processing transformer coil.
Background technique
The three large basic elements of character of transformer are divided into iron core, winding coil and cooler, and winding coil is not only the galvanic circle of transformer, especially the heart of transformer.Winding coil after just coiling completes, because of different winding modes and different operation techniques, can make winding coil on axial direction, have larger size difference; For guaranteeing that same specification coil axes is to consistent size, traditional way is to adopt upper and lower pressing plate, and four brails add the artificial load mode of nut; There are following four large disadvantages in the method:
1), manually load time-consuming, effort, inefficiency.
2), coil discontinuity equalization; Unbalancedly stressedly easily make winding insulation destroy and cause transformer to damage.
3), winding coil press power is not easy to control, and cannot monitor, press power is too small can produce larger air gap, causes eddy current loss, leakage field, thereby makes transformer heating.Press power is excessive, likely damages wire insulation and makes winding deformation.
4), axial dimension is not easy to control.Although while loading, coil dimension has reached designing requirement, after loading force removes, coil can exceed because of bounce-back design load.
5) axial dimension can only pass through hand dipping, and real monitoring cannot realize time.
Summary of the invention
The object of the present invention is to provide a kind of manufacturing efficiency high, can avoid coil discontinuity equalization that winding insulation is destroyed, avoid the too small meeting of press power to produce larger air gap, cause eddy current loss, leakage field, thereby make transformer heating, avoid the excessive damage wire insulation of press power and make winding deformation, the hydraulic pressure press of the transformer coil processed that the transformer coil quality of institute's processing is more secure.
The hydraulic pressure press of processing transformer coil of the present invention, comprise frame, worktable, also comprise fuel tank, fuel tank is connected with the filler opening of constant flow paddle pump by low pressure in-line, the inlet of low pressure in-line is provided with low pressure line coarse-grain filtering device, low pressure in-line has low pressure butterfly valve and low pressure compensator from entrance point to outlet end installed in series in order, the oil outlet of described constant flow paddle pump is connected with the filler opening on low-pressure oil delivery pipe road, there is low pressure inlet oil filter on low-pressure oil delivery pipe road and can allows hydraulic oil flow to the low pressure check valve of outlet end to outlet end installed in series in order from entrance point, pipeline section on low-pressure oil delivery pipe road between low pressure inlet oil filter and low pressure check valve is connected with the filler opening of low pressure oil extraction pipeline, on low pressure oil extraction pipeline, be in series with the low pressure lotus electromagnetic relief valve of often starting discharging, the oil outlet of low pressure oil extraction pipeline is connected with the oil inlet end of return line, the oil outlet on described low-pressure oil delivery pipe road by oil distributing pipe road respectively with the filler opening of the first servo hydraulic cylinder system, the filler opening of the second servo hydraulic cylinder system, the filler opening of the 3rd servo hydraulic cylinder system is connected with the filler opening of the 4th servo hydraulic cylinder system,
Described fuel tank is connected with the filler opening of high-pressure shaft to quantitative plunger pump by high pressure in-line, the inlet of high pressure in-line is provided with pressure duct coarse-grain filtering device, high pressure in-line has pressure ball valve and high pressure compensator from entrance point to outlet end installed in series in order, described high-pressure shaft is connected with the filler opening on high-pressure pipeline road to the oil outlet of quantitative plunger pump, there is high pressure inlet oil filter on high-pressure pipeline road and can allows hydraulic oil flow to the high pressure one-way valve of outlet end to outlet end installed in series in order from entrance point, pipeline section on high-pressure pipeline road between high pressure inlet oil filter and high pressure one-way valve is connected with the filler opening of high pressure oil extraction pipeline, on high pressure oil extraction pipeline, be in series with the pilot-operated proportional relief valve with external amplification board, the oil outlet of high pressure oil extraction pipeline is connected with the oil inlet end of return line, the oil outlet on described high-pressure pipeline road by described oil distributing pipe road respectively with the filler opening of described the first servo hydraulic cylinder system, the filler opening of described the second servo hydraulic cylinder system, the filler opening of described the 3rd servo hydraulic cylinder system is connected with the filler opening of described the 4th servo hydraulic cylinder system,
Described the first servo hydraulic cylinder system comprises the first servo hydraulic cylinder, the first in-line, the first return line and the first normal close type 3-position 4-way electrohydraulic control, the filler opening of the first servo hydraulic cylinder system is the filler opening of the first in-line, on the first in-line, be in series with the first high pressure filter that band stops up warning function, the oil outlet of the first in-line is connected with the oil-feed port P of described the first normal close type 3-position 4-way electrohydraulic control, the filler opening of the first return line is connected with the drain tap T of the first normal close type 3-position 4-way electrohydraulic control, the oil outlet of the first return line is connected with the oil inlet end of described return line, the hydraulic fluid port A of described normal close type 3-position 4-way electrohydraulic control is connected with the lower active chamber of described the first servo hydraulic cylinder by first time active chamber pipeline road, first valve that contends with is installed on first time active chamber pipeline road, first valve that contends with has the unidirectional logical oily path of lower active chamber to the first servo hydraulic cylinder, on first time active chamber pipeline road, on the first pipeline contending with between valve and the lower active chamber of described the first servo hydraulic cylinder, be provided with the first lower pressure sensor, on first time active chamber pipeline road, at described the first normal close type 3-position 4-way electrohydraulic control and the first pipeline contending with between valve, by being in series with the pipeline of No. 1 position bi-bit bi-pass solenoid directional control valve, be connected with the oil inlet end of return line, the hydraulic fluid port B of described normal close type 3-position 4-way electrohydraulic control passes through active chamber pipeline road on first and is connected with the upper active chamber of described the first servo hydraulic cylinder, on first, active chamber pipeline road is provided with the first upward pressure sensor, cylinder body and the frame of described the first servo hydraulic cylinder are fixedly linked, in the cylinder body of the first servo hydraulic cylinder, be provided with the first displacement transducer, the first displacement transducer can be measured the movement of cylinder block position of the first servo hydraulic cylinder, and analog electric signal is passed to electric control system,
The described first control port that contends with valve is connected with active chamber pipeline road on described first by pipeline;
Described the second servo hydraulic cylinder system comprises the second servo hydraulic cylinder, the second in-line, the second return line and the second normal close type 3-position 4-way electrohydraulic control, the filler opening of the second servo hydraulic cylinder system is the filler opening of the second in-line, on the second in-line, be in series with the second high pressure filter that band stops up warning function, the oil outlet of the second in-line is connected with the oil-feed port P of described the second normal close type 3-position 4-way electrohydraulic control, the filler opening of the second return line is connected with the drain tap T of the second normal close type 3-position 4-way electrohydraulic control, the oil outlet of the second return line is connected with the oil inlet end of described return line, the hydraulic fluid port A of described the second normal close type 3-position 4-way electrohydraulic control is connected with the lower active chamber of described the second servo hydraulic cylinder by second time active chamber pipeline road, second valve that contends with is installed on second time active chamber pipeline road, second valve that contends with has the unidirectional logical oily path of lower active chamber to the second servo hydraulic cylinder, on second time active chamber pipeline road, on the second pipeline contending with between valve and the lower active chamber of described the second servo hydraulic cylinder, be provided with the second lower pressure sensor, on second time active chamber pipeline road, at described the second normal close type 3-position 4-way electrohydraulic control and the second pipeline contending with between valve, by being in series with the pipeline of No. 2 position bi-bit bi-pass solenoid directional control valves, be connected with the oil inlet end of return line, the hydraulic fluid port B of described the second normal close type 3-position 4-way electrohydraulic control passes through active chamber pipeline road on second and is connected with the upper active chamber of described the second servo hydraulic cylinder, on second, active chamber pipeline road is provided with the second upward pressure sensor, cylinder body and the frame of described the second servo hydraulic cylinder are fixedly linked, in the cylinder body of the second servo hydraulic cylinder, be provided with second displacement sensor, second displacement sensor can be measured the movement of cylinder block position of the second servo hydraulic cylinder, and analog electric signal is passed to electric control system,
The described second control port that contends with valve is connected with active chamber pipeline road on described second by pipeline;
Described the 3rd servo hydraulic cylinder system comprises the 3rd servo hydraulic cylinder, the 3rd in-line, the 3rd return line and the 3rd normal close type 3-position 4-way electrohydraulic control, the filler opening of the 3rd servo hydraulic cylinder system is the filler opening of the 3rd in-line, on the 3rd in-line, be in series with the third high press filtration device that band stops up warning function, the oil outlet of the 3rd in-line is connected with the oil-feed port P of described the 3rd normal close type 3-position 4-way electrohydraulic control, the filler opening of the 3rd return line is connected with the drain tap T of the 3rd normal close type 3-position 4-way electrohydraulic control, the 3rd oil outlet of return line and the oil inlet end of described return line are connected, the hydraulic fluid port A of described the 3rd normal close type 3-position 4-way electrohydraulic control is connected with the lower active chamber of described the 3rd servo hydraulic cylinder by the 3rd time active chamber pipeline road, the 3rd valve that contends with is installed on the 3rd time active chamber pipeline road, the 3rd valve that contends with has the unidirectional logical oily path of lower active chamber to the 3rd servo hydraulic cylinder, on the 3rd time active chamber pipeline road, on the 3rd pipeline contending with between valve and the lower active chamber of described the 3rd servo hydraulic cylinder, be provided with the 3rd lower pressure sensor, on the 3rd time active chamber pipeline road, at described the 3rd normal close type 3-position 4-way electrohydraulic control and the 3rd pipeline contending with between valve, by being in series with the pipeline of No. 3 position bi-bit bi-pass solenoid directional control valves, be connected with the oil inlet end of return line, the hydraulic fluid port B of described the 3rd normal close type 3-position 4-way electrohydraulic control passes through active chamber pipeline road on the 3rd and is connected with the upper active chamber of described the 3rd servo hydraulic cylinder, on the 3rd, active chamber pipeline road is provided with the 3rd upward pressure sensor, cylinder body and the frame of described the 3rd servo hydraulic cylinder are fixedly linked, in the cylinder body of the 3rd servo hydraulic cylinder, be provided with triple motion sensor, triple motion sensor can be measured the movement of cylinder block position of the 3rd servo hydraulic cylinder, and analog electric signal is passed to electric control system,
The described the 3rd control port that contends with valve is connected with active chamber pipeline road on the described the 3rd by pipeline;
Described the 4th servo hydraulic cylinder system comprises the 4th servo hydraulic cylinder, the 4th in-line, the 4th return line and the 4th normal close type 3-position 4-way electrohydraulic control, the filler opening of the 4th servo hydraulic cylinder system is the filler opening of the 4th in-line, on the 4th in-line, be in series with the 4th high pressure filter that band stops up warning function, the oil outlet of the 4th in-line is connected with the oil-feed port P of described the 4th normal close type 3-position 4-way electrohydraulic control, the filler opening of the 4th return line is connected with the drain tap T of the 4th normal close type 3-position 4-way electrohydraulic control, the 4th oil outlet of return line and the oil inlet end of described return line are connected, the hydraulic fluid port A of described the 4th normal close type 3-position 4-way electrohydraulic control is connected with the lower active chamber of described the 4th servo hydraulic cylinder by the 4th time active chamber pipeline road, the 4th valve that contends with is installed on the 4th time active chamber pipeline road, the 4th valve that contends with has the unidirectional logical oily path of lower active chamber to the 4th servo hydraulic cylinder, on the 4th time active chamber pipeline road, on the 4th pipeline contending with between valve and the lower active chamber of described the 4th servo hydraulic cylinder, be provided with the 4th lower pressure sensor, on the 4th time active chamber pipeline road, at described the 4th normal close type 3-position 4-way electrohydraulic control and the 4th pipeline contending with between valve, by being in series with the pipeline of No. 3 position bi-bit bi-pass solenoid directional control valves, be connected with the oil inlet end of return line, the hydraulic fluid port B of described the 4th normal close type 3-position 4-way electrohydraulic control passes through active chamber pipeline road on the 4th and is connected with the upper active chamber of described the 4th servo hydraulic cylinder, on the 4th, active chamber pipeline road is provided with the 4th upward pressure sensor, cylinder body and the frame of described the 4th servo hydraulic cylinder are fixedly linked, in the cylinder body of the 4th servo hydraulic cylinder, be provided with the 4th displacement transducer, the 4th displacement transducer can be measured the movement of cylinder block position of the 4th servo hydraulic cylinder, and analog electric signal is passed to electric control system,
The described the 4th control port that contends with valve is connected with active chamber pipeline road on the described the 4th by pipeline;
On described return line, from entrance point, to outlet end installed in series in order, there are return check valve, tube still type water cooler and return filter, return filter place is provided with for measuring the differential pressure switch of return filter two ends pressure reduction, the two ends of return filter are connected by bypass oil pipe, are in series with the one-way valve that can allow hydraulic oil flow to described fuel tank on the bypass oil pipe at return filter two ends.
The hydraulic pressure press of processing transformer coil of the present invention, wherein said low pressure inlet oil filter place is provided with for measuring the differential pressure switch of low pressure inlet oil filter two ends pressure reduction, the two ends of low pressure inlet oil filter are connected by bypass oil pipe, are in series with the one-way valve that can allow hydraulic oil flow to described oil distributing pipe road on the bypass oil pipe at low pressure inlet oil filter two ends; Described high pressure inlet oil filter place is provided with for measuring the differential pressure switch of high pressure inlet oil filter two ends pressure reduction, the two ends of high pressure inlet oil filter are connected by bypass oil pipe, are in series with the one-way valve that can allow hydraulic oil flow to described oil distributing pipe road on the bypass oil pipe at high pressure inlet oil filter two ends.
The hydraulic pressure press of processing transformer coil of the present invention, wherein said oil distributing pipe road is connected with capsule-type accumulator by accumulation of energy pipeline, and accumulation of energy pipeline is provided with stop valve and relief valve, and the flow-off of relief valve is connected with described fuel tank by pipeline.
The hydraulic pressure press of processing transformer coil of the present invention, wherein said fuel tank is connected with the filler opening of gear pump by emergent in-line, the inlet of emergent in-line is provided with emergency line filter, the oil outlet of described gear pump is connected with the filler opening of emergent pipeline road, on emergent pipeline road, direct-acting overflow valve is installed and can allows hydraulic oil flow to the emergent one-way valve on described oil distributing pipe road, the outlet of emergent pipeline road is connected with oil distributing pipe road.
The hydraulic pressure press of processing transformer coil of the present invention, the bottom of wherein said fuel tank is provided with internal thread fuel outlet ball valve, the level meter showing with temperature is installed on the sidewall of fuel tank, the top of fuel tank is provided with the fluid level transmitter with analog signal output, the top of fuel tank is provided with hydraulic air filter, fuel tank is provided with hydraulic air filter, with the bimetallic thermometer of double switch amount, with the fluid level controller of double switch amount, with simulation output, can monitor in real time temperature transmitter and bar type magnetic filter that in fuel tank, oil temperature changes.
The hydraulic pressure press of processing transformer coil of the present invention, its on first active chamber pipeline road be provided with the first upward pressure sensor, cylinder body and the frame of described the first servo hydraulic cylinder are fixedly linked, in the cylinder body of the first servo hydraulic cylinder, be provided with the first displacement transducer, the first displacement transducer can be measured the movement of cylinder block position of the first servo hydraulic cylinder, and analog electric signal is passed to electric control system, owing to having adopted the exclusive structural design of the present invention, the loading of the hydraulic pressure press of processing transformer coil therefore of the present invention to winding coil, unloading all can realize automatic control, and it is high to have manufacturing efficiency, can avoid coil discontinuity equalization that winding insulation is destroyed, avoid the too small meeting of press power to produce larger air gap, cause eddy current loss, leakage field, thereby make transformer heating, avoid the excessive damage wire insulation of press power and make winding deformation, the more secure feature of transformer coil quality of institute's processing.
The present invention can process other details of hydraulic pressure press of transformer coil and feature can just can be cheer and bright by reading the embodiment that below encyclopaedize by reference to the accompanying drawings.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of processing the hydraulic pressure press of transformer coil of the present invention.
Embodiment
As shown in Fig. 1, the hydraulic pressure press of processing transformer coil of the present invention, comprises frame, worktable, also comprises fuel tank 1, and fuel tank 1 is used for storing fluid to meet the oil suction of pump, prevents that pump suction is empty, the oil return of collecting system simultaneously.The bottom of fuel tank 1 is provided with internal thread fuel outlet ball valve 2, when fuel tank 1 need to clean, can pass through this valve, the interior trapped fuel of emptying fuel tank 1; The level meter 3 showing with temperature is installed on the sidewall of fuel tank 1, by the glass vision panel on the level meter 3 showing with temperature, can conveniently observes the interior height of liquid level of fuel tank 1, also can show the temperature in fuel tank 1 simultaneously; The top of fuel tank 1 is provided with the fluid level transmitter 4 with analog signal output, and this fluid level transmitter 4 with analog signal output has remote transmission function, can monitor in real time by computer screen the variation of fuel tank 1 interior liquid level; The top of fuel tank 1 is provided with hydraulic air filter 5, when hydraulic work system, in fuel tank during liquid level and rise or decline, during rising, by hydraulic air filter 5, discharge air from inside to outside, during decline, pass through hydraulic air filter 5 air amount from outside to inside, hydraulic air filter 5 can also purify the air of suction simultaneously; Hydraulic air filter 5 also can be used as oil filler.On fuel tank 1, be also provided with bimetallic thermometer 11 with double switch amount, with the fluid level controller 55 of double switch amount with simulation output, can monitor in real time temperature transmitter 51 and bar type magnetic filter 52 that the interior oil temperature of fuel tank 1 changes.
Low pressure in-line 100 has low pressure butterfly valve 7 and low pressure compensator 8 from entrance point to outlet end installed in series in order, the oil outlet of constant flow paddle pump 12 is connected with the filler opening on low-pressure oil delivery pipe road 101, there is low pressure inlet oil filter 18 on low-pressure oil delivery pipe road 101 and can allows hydraulic oil flow to the low pressure check valve 40 of outlet end to outlet end installed in series in order from entrance point, pipeline section on low-pressure oil delivery pipe road 101 between low pressure inlet oil filter 18 and low pressure check valve 40 is connected with the filler opening of low pressure oil extraction pipeline 102, on low pressure oil extraction pipeline 102, be in series with the low pressure lotus electromagnetic relief valve 21 of often starting discharging, the oil outlet of low pressure oil extraction pipeline 102 is connected with the oil inlet end of return line 103, the oil outlet on low-pressure oil delivery pipe road 101 by oil distributing pipe road 107 respectively with the filler opening of the first servo hydraulic cylinder system, the filler opening of the second servo hydraulic cylinder system, the filler opening of the 3rd servo hydraulic cylinder system is connected with the filler opening of the 4th servo hydraulic cylinder system,
Constant flow paddle pump 12 can be under the driving of threephase asynchronous, hydraulic oil in fuel tank 1 is sucked to the oil sucting cavity of constant flow paddle pump 12 by low pressure line coarse-grain filtering device 6, low pressure butterfly valve 7 and low pressure compensator 8, the fluid of oil sucting cavity is along with the rotation of constant flow paddle pump 12 is discharged by pressure oil cavity; The fluid of discharging arrives oil distributing pipe road 107 through low-pressure oil delivery pipe road 101, low pressure inlet oil filter 18, low pressure check valve 40, now the outlet pressure of constant flow paddle pump 12 is set up by often start discharging lotus electromagnetic relief valve 21 of low pressure, and the force value of setting can show by shock-proof pressure gauge.
Above-mentioned low pressure butterfly valve 7 can be used to block or connect the pressure oil of fuel tank 1 and constant flow paddle pump 12 oil sucting cavities, is convenient to maintenance and the replacing of constant flow paddle pump 12; Low pressure compensator 8 is a kind of elastic elements, avoids the vibrations of three characteristics of the middle term asynchronous motor 13 and constant flow paddle pump 12 to pass to fuel tank 1, has vibration-absorbing and reducing noise function.
High pressure in-line 104 has pressure ball valve 9 and high pressure compensator 10 from entrance point to outlet end installed in series in order, pressure ball valve 9 can be used to block or connect fuel tank 1 and the pressure oil of high-pressure shaft to quantitative plunger pump 14 oil sucting cavities, is convenient to high-pressure shaft to maintenance and the replacing of quantitative plunger pump 14; High pressure compensator 10 can avoid high-pressure shaft to pass to fuel tank 1 to the vibrations of quantitative plunger pump.
High-pressure shaft is connected with the filler opening on high-pressure pipeline road 105 to the oil outlet of quantitative plunger pump 14, there is high pressure inlet oil filter 19 on high-pressure pipeline road 105 and can allows hydraulic oil flow to the high pressure one-way valve 20 of outlet end to outlet end installed in series in order from entrance point, pipeline section on high-pressure pipeline road 105 between high pressure inlet oil filter 19 and high pressure one-way valve 20 is connected with the filler opening of high pressure oil extraction pipeline 106, on high pressure oil extraction pipeline 106, be in series with the pilot-operated proportional relief valve 22 with external amplification board, the oil outlet of high pressure oil extraction pipeline 106 is connected with the oil inlet end of return line 103, the oil outlet on high-pressure pipeline road 105 by oil distributing pipe road 107 respectively with the filler opening of the first servo hydraulic cylinder system, the filler opening of the second servo hydraulic cylinder system, the filler opening of the 3rd servo hydraulic cylinder system is connected with the filler opening of the 4th servo hydraulic cylinder system, pilot-operated proportional relief valve 22 with external amplification board can carry out step-less adjustment to high-pressure service pump outlet pressure P2.
The first servo hydraulic cylinder system comprises the first servo hydraulic cylinder 331, the first in-line 108, the first return line 109 and the first normal close type 3-position 4-way electrohydraulic control 311, the filler opening of the first servo hydraulic cylinder system is the filler opening of the first in-line 108, on the first in-line 108, be in series with the first high pressure filter 561 that band stops up warning function, the oil outlet of the first in-line 108 is connected with the oil-feed port P of the first normal close type 3-position 4-way electrohydraulic control 311, the filler opening of the first return line 109 is connected with the drain tap T of the first normal close type 3-position 4-way electrohydraulic control 311, the oil outlet of the first return line 109 is connected with the oil inlet end of return line 103, the hydraulic fluid port A of normal close type 3-position 4-way electrohydraulic control 311 is connected with the lower active chamber of the first servo hydraulic cylinder 331 by first time active chamber pipeline road 110, first valve 291 that contends with is installed on first time active chamber pipeline road 110, first valve 291 that contends with has the unidirectional logical oily path of lower active chamber to the first servo hydraulic cylinder 331, on first time active chamber pipeline road 110, on the first pipeline contending with between valve 291 and the lower active chamber of the first servo hydraulic cylinder 331, be provided with the first lower pressure sensor 326, on first time active chamber pipeline road 110, at the first normal close type 3-position 4-way electrohydraulic control 311 and the first pipeline contending with between valve 291, by being in series with the pipeline of No. 1 position bi-bit bi-pass solenoid directional control valve 391, be connected with the oil inlet end of return line 103, the hydraulic fluid port B of normal close type 3-position 4-way electrohydraulic control 311 passes through active chamber pipeline road 111 on first and is connected with the upper active chamber of the first servo hydraulic cylinder 331, on first, active chamber pipeline road 111 is provided with the first upward pressure sensor 321, cylinder body and the frame of the first servo hydraulic cylinder 331 are fixedly linked, in the cylinder body of the first servo hydraulic cylinder 331, be provided with the first displacement transducer 371, the first displacement transducer 371 can be measured the piston rod movement position of the first servo hydraulic cylinder 331, and analog electric signal is passed to electric control system, the first control port that contends with valve 291 is connected with active chamber pipeline road 111 on first by pipeline.
The working principle of the first servo hydraulic cylinder system is: after the first normal close type 3-position 4-way electrohydraulic control 311 energisings, according to the difference of the given signal of electric control system, allow the spool of the first normal close type 3-position 4-way electrohydraulic control 311 change to parallel position, now the hydraulic fluid port P of the first normal close type 3-position 4-way electrohydraulic control 311 and hydraulic fluid port A connect, the hydraulic fluid port B of the first normal close type 3-position 4-way electrohydraulic control 311 and hydraulic fluid port T connect, from the pressure oil of constant flow paddle pump 12 through first time active chamber pipeline road 110, first valve 291 that contends with enters the lower active chamber of the first servo hydraulic cylinder 331, the piston rod of the first servo hydraulic cylinder 331 is up, and hydraulic oil active chamber pipeline road 111 on first in the upper active chamber of the first servo hydraulic cylinder 331, the hydraulic fluid port B of the first normal close type 3-position 4-way electrohydraulic control 311 and hydraulic fluid port T, the first return line 109, return line 103 is got back to fuel tank 1.
After up the putting in place of piston rod of the first servo hydraulic cylinder 331, then the first displacement transducer 371 senders, meta is got back in the first normal close type 3-position 4-way electrohydraulic control 311 power-off, the piston rod stop motion of the first servo hydraulic cylinder 331, now the piston rod of the first servo hydraulic cylinder 331 can bottom-uply reach the top of the coil that needs processing, and operator can be fixedly linked the piston rod top of pressing plate and the first servo hydraulic cylinder 331.
After the first normal close type 3-position 4-way electrohydraulic control 311 is switched on again, according to the difference of the given signal of electric control system, allow the spool of the first normal close type 3-position 4-way electrohydraulic control 311 change to intersection position, now the hydraulic fluid port P of the first normal close type 3-position 4-way electrohydraulic control 311 and hydraulic fluid port B connect, the hydraulic fluid port A of the first normal close type 3-position 4-way electrohydraulic control 311 and hydraulic fluid port T connect, the pipeline that is simultaneously in series with No. 1 position bi-bit bi-pass solenoid directional control valve 391 is also switched on, from pressure oil active chamber pipeline road 111 on first of constant flow paddle pump 12, enter the upper active chamber of the first servo hydraulic cylinder 331, in the lower active chamber of the first servo hydraulic cylinder 331, hydraulic oil is through being in series with the pipeline of No. 1 position bi-bit bi-pass solenoid directional control valve 391, and first time active chamber pipeline road 110, the first hydraulic fluid port A and hydraulic fluid port T that contends with valve 291 first normal close type 3-position 4-way electrohydraulic controls 311, the first return line 109 is to return line 103, from return line 103, get back to fuel tank 1 again, in this stage, the piston rod of the first servo hydraulic cylinder 331 is descending fast, and pressing plate also can be along with descending.
Fast after descending putting in place, the first displacement transducer 371 senders, the pipeline that is in series with No. 1 position bi-bit bi-pass solenoid directional control valve 391 is cut off, hydraulic oil can only flow out the lower active chamber of the first servo hydraulic cylinders 331 by the first contend with valve 291, the piston rod of the first servo hydraulic cylinder 331 starts descending loading at a slow speed, when on-load pressure reaches the pressure of constant flow paddle pump 12 settings, high-pressure shaft starts to quantitative plunger pump 14, the pressure oil of high-pressure low-flow starts to enter the upper active chamber of the first servo hydraulic cylinder 331, winding coil is carried out to high pressure loading, and the electromagnet that low pressure is often started discharging in lotus electromagnetic relief valve 21 this moment electric, the low pressure lotus electromagnetic relief valve 21 of often starting discharging starts constant flow paddle pump 12 off-loads, when the upper active chamber on-load pressure of the first servo hydraulic cylinder 331 reaches the pressure of default, this pressure is by the first upward pressure sensor 321 monitorings, the piston rod of the first servo hydraulic cylinder 331 stops descending, and crush board keeps this pressure to reach the technological requirement of winding coil compacting.
On-load pressure keeps after certain hour, automatical control system sender, allow the spool of the first normal close type 3-position 4-way electrohydraulic control 311 change to parallel position, now the hydraulic fluid port P of the first normal close type 3-position 4-way electrohydraulic control 311 and hydraulic fluid port A connect, the hydraulic fluid port B of the first normal close type 3-position 4-way electrohydraulic control 311 and hydraulic fluid port T connect, the piston rod of the first servo hydraulic cylinder 331 is up, coils unloaded, and compacting completes.
The second servo hydraulic cylinder system comprises the second servo hydraulic cylinder 332, the second in-line 112, the second return line 113 and the second normal close type 3-position 4-way electrohydraulic control 312, the filler opening of the second servo hydraulic cylinder system is the filler opening of the second in-line 112, on the second in-line 112, be in series with the second high pressure filter 562 that band stops up warning function, the oil outlet of the second in-line 112 is connected with the oil-feed port P of the second normal close type 3-position 4-way electrohydraulic control 312, the filler opening of the second return line 113 is connected with the drain tap T of the second normal close type 3-position 4-way electrohydraulic control 312, the oil outlet of the second return line 113 is connected with the oil inlet end of return line 103, the hydraulic fluid port A of the second normal close type 3-position 4-way electrohydraulic control 312 is connected with the lower active chamber of the second servo hydraulic cylinder 332 by second time active chamber pipeline road 114, second valve 292 that contends with is installed on second time active chamber pipeline road 114, second valve 292 that contends with has the unidirectional logical oily path of lower active chamber to the second servo hydraulic cylinder 332, on second time active chamber pipeline road 114, on the second pipeline contending with between valve 292 and the lower active chamber of the second servo hydraulic cylinder 332, be provided with the second lower pressure sensor 327, on second time active chamber pipeline road 114, at the second normal close type 3-position 4-way electrohydraulic control 312 and the second pipeline contending with between valve 292, by being in series with the pipeline of No. 2 position bi-bit bi-pass solenoid directional control valves 392, be connected with the oil inlet end of return line 103, the hydraulic fluid port B of the second normal close type 3-position 4-way electrohydraulic control 312 passes through active chamber pipeline road 115 on second and is connected with the upper active chamber of the second servo hydraulic cylinder 332, on second, active chamber pipeline road 115 is provided with the second upward pressure sensor 322, cylinder body and the frame of the second servo hydraulic cylinder 332 are fixedly linked, in the cylinder body of the second servo hydraulic cylinder 332, be provided with second displacement sensor 372, second displacement sensor 372 can be measured the movement of cylinder block position of the second servo hydraulic cylinder 332, and analog electric signal is passed to electric control system, the second control port that contends with valve 292 is connected with active chamber pipeline road 115 on second by pipeline,
The 3rd servo hydraulic cylinder system comprises the 3rd servo hydraulic cylinder 333, the 3rd in-line 116, the 3rd return line 117 and the 3rd normal close type 3-position 4-way electrohydraulic control 313, the filler opening of the 3rd servo hydraulic cylinder system is the filler opening of the 3rd in-line 116, on the 3rd in-line 116, be in series with the third high press filtration device 563 that band stops up warning function, the oil outlet of the 3rd in-line 116 is connected with the oil-feed port P of the 3rd normal close type 3-position 4-way electrohydraulic control 313, the filler opening of the 3rd return line 117 is connected with the drain tap T of the 3rd normal close type 3-position 4-way electrohydraulic control 313, the oil outlet of the 3rd return line 117 is connected with the oil inlet end of return line 103, the hydraulic fluid port A of the 3rd normal close type 3-position 4-way electrohydraulic control 313 is connected with the lower active chamber of the 3rd servo hydraulic cylinder 333 by the 3rd time active chamber pipeline road 118, the 3rd valve 293 that contends with is installed on the 3rd time active chamber pipeline road 118, the 3rd valve 293 that contends with has the unidirectional logical oily path of lower active chamber to the 3rd servo hydraulic cylinder 333, on the 3rd time active chamber pipeline road 118, on the 3rd pipeline contending with between valve 293 and the lower active chamber of the 3rd servo hydraulic cylinder 333, be provided with the 3rd lower pressure sensor 328, on the 3rd time active chamber pipeline road 118, at the 3rd normal close type 3-position 4-way electrohydraulic control 313 and the 3rd pipeline contending with between valve 293, by being in series with the pipeline of No. 3 position bi-bit bi-pass solenoid directional control valves 393, be connected with the oil inlet end of return line 103, the hydraulic fluid port B of the 3rd normal close type 3-position 4-way electrohydraulic control 313 passes through active chamber pipeline road 119 on the 3rd and is connected with the upper active chamber of the 3rd servo hydraulic cylinder 333, on the 3rd, active chamber pipeline road 119 is provided with the 3rd upward pressure sensor 323, cylinder body and the frame of the 3rd servo hydraulic cylinder 333 are fixedly linked, in the cylinder body of the 3rd servo hydraulic cylinder 333, be provided with triple motion sensor 373, triple motion sensor 373 can be measured the movement of cylinder block position of the 3rd servo hydraulic cylinder 333, and analog electric signal is passed to electric control system, the 3rd control port that contends with valve 293 is connected with active chamber pipeline road 119 on the 3rd by pipeline,
The 4th servo hydraulic cylinder system comprises the 4th servo hydraulic cylinder 334, the 4th in-line 120, the 4th return line 121 and the 4th normal close type 3-position 4-way electrohydraulic control 314, the filler opening of the 4th servo hydraulic cylinder system is the filler opening of the 4th in-line 120, on the 4th in-line 120, be in series with the 4th high pressure filter 564 that band stops up warning function, the oil outlet of the 4th in-line 120 is connected with the oil-feed port P of the 4th normal close type 3-position 4-way electrohydraulic control 314, the filler opening of the 4th return line 121 is connected with the drain tap T of the 4th normal close type 3-position 4-way electrohydraulic control 314, the oil outlet of the 4th return line 121 is connected with the oil inlet end of return line 103, the hydraulic fluid port A of the 4th normal close type 3-position 4-way electrohydraulic control 314 is connected with the lower active chamber of the 4th servo hydraulic cylinder 334 by the 4th time active chamber pipeline road 122, the 4th valve 294 that contends with is installed on the 4th time active chamber pipeline road 122, the 4th valve 294 that contends with has the unidirectional logical oily path of lower active chamber to the 4th servo hydraulic cylinder 334, on the 4th time active chamber pipeline road 122, on the 4th pipeline contending with between valve 294 and the lower active chamber of the 4th servo hydraulic cylinder 334, be provided with the 4th lower pressure sensor 329, on the 4th time active chamber pipeline road 122, at the 4th normal close type 3-position 4-way electrohydraulic control 314 and the 4th pipeline contending with between valve 294, by being in series with the pipeline of No. 3 position bi-bit bi-pass solenoid directional control valves 394, be connected with the oil inlet end of return line 103, the hydraulic fluid port B of the 4th normal close type 3-position 4-way electrohydraulic control 314 passes through active chamber pipeline road 123 on the 4th and is connected with the upper active chamber of the 4th servo hydraulic cylinder 334, on the 4th, active chamber pipeline road 123 is provided with the 4th upward pressure sensor 324, cylinder body and the frame of the 4th servo hydraulic cylinder 334 are fixedly linked, in the cylinder body of the 4th servo hydraulic cylinder 334, be provided with the 4th displacement transducer 374, the 4th displacement transducer 374 can be measured the movement of cylinder block position of the 4th servo hydraulic cylinder 334, and analog electric signal is passed to electric control system, the 4th control port that contends with valve 294 is connected with active chamber pipeline road 123 on the 4th by pipeline,
Above-mentioned the second servo hydraulic cylinder system, the 3rd servo hydraulic cylinder system and the 4th servo hydraulic cylinder system and the first servo hydraulic cylinder system are worked simultaneously, the second servo hydraulic cylinder system, the working principle of the 3rd servo hydraulic cylinder system and the 4th servo hydraulic cylinder system is with the first servo hydraulic cylinder system, the first servo hydraulic cylinder system, the second servo hydraulic cylinder system, no matter the 3rd servo hydraulic cylinder system and the 4th servo hydraulic cylinder system are fast or at a slow speed all can synchronous operation, and on-load pressure can step-less adjustment, so just avoid winding coil to cause damaging because of overload and unbalance stress.The hydraulic pressure press of processing transformer coil of the present invention all can be realized automatic control to the loading of winding coil, unloading, and efficiency improves greatly, saves again a large amount of manpowers simultaneously.
On return line 103, from entrance point, to outlet end installed in series in order, there are return check valve 28, tube still type water cooler 35 and return filter 50, return filter 50 places are provided with for measuring the differential pressure switch of return filter 50 two ends pressure reduction, the two ends of return filter 50 are connected by bypass oil pipe, are in series with the one-way valve that can allow hydraulic oil flow to fuel tank 1 on the bypass oil pipe at return filter 50 two ends.Tube still type water cooler 35 can be forced system oil return cooling, and the hydraulic oil being cooled is got back to fuel tank 1 after return filter 50 filters, to guarantee the clean of fluid.
Above-mentioned low pressure inlet oil filter 18 places are provided with for measuring the differential pressure switch of low pressure inlet oil filter 18 two ends pressure reduction, the two ends of low pressure inlet oil filter 18 are connected by bypass oil pipe, are in series with the one-way valve that can allow hydraulic oil flow to oil distributing pipe road 107 on the bypass oil pipe at low pressure inlet oil filter 18 two ends; High pressure inlet oil filter 19 places are provided with for measuring the differential pressure switch of high pressure inlet oil filter 19 two ends pressure reduction, the two ends of high pressure inlet oil filter 19 are connected by bypass oil pipe, are in series with the one-way valve that can allow hydraulic oil flow to oil distributing pipe road 107 on the bypass oil pipe at high pressure inlet oil filter 19 two ends.
Above-mentioned oil distributing pipe road 107 is connected with capsule-type accumulator 27 by accumulation of energy pipeline 124, and accumulation of energy pipeline 124 is provided with stop valve and relief valve 23, and the flow-off of relief valve 23 is connected with fuel tank 1 by pipeline.Capsule-type accumulator 27 is mainly used to stable system pressure, eliminates pulsation and absorbs hydraulic shock; 23 pairs of capsule-type accumulators 27 of relief valve play safety protection effect, and when system overpressure, relief valve 23 is opened automatically, and the pressure exceeding is laid down.Stop valve can facilitate maintenance and the replacing of capsule-type accumulator.
Above-mentioned fuel tank 1 is connected with the filler opening of gear pump 43 by emergent in-line 125, the inlet of emergent in-line 125 is provided with emergency line filter 49, the oil outlet of gear pump 43 is connected with the filler opening of emergent pipeline road 126, direct-acting overflow valve 47 is installed on emergent pipeline road 126 and can allows hydraulic oil flow to the emergent one-way valve 48 on oil distributing pipe road 107, the outlet of emergent pipeline road 126 is connected with oil distributing pipe road 107.Gear pump 43 does not use under normal circumstances, while only having catastrophic failure (such as power failure, high and low press pump group decompression etc.), need to by suppressing winding coil release time just use.
Embodiment recited above is described the preferred embodiment of the present invention; not scope of the present invention is limited; put mentally not departing from the present invention design; various distortion and improvement that the common engineers and technicians in related domain make technical solution of the present invention, all should fall in the definite protection domain of claims of the present invention.
Claims (5)
1. can process the hydraulic pressure press of transformer coil, comprise frame, worktable, it is characterized in that: also comprise fuel tank (1), fuel tank (1) is connected with the filler opening of constant flow paddle pump (12) by low pressure in-line (100), the inlet of low pressure in-line (100) is provided with low pressure line coarse-grain filtering device (6), low pressure in-line (100) has low pressure butterfly valve (7) and low pressure compensator (8) from entrance point to outlet end installed in series in order, the oil outlet of described constant flow paddle pump (12) is connected with the filler opening of low-pressure oil delivery pipe road (101), there is low pressure inlet oil filter (18) on low-pressure oil delivery pipe road (101) and can allows hydraulic oil flow to the low pressure check valve (40) of outlet end to outlet end installed in series in order from entrance point, the pipeline section being positioned on low-pressure oil delivery pipe road (101) between low pressure inlet oil filter (18) and low pressure check valve (40) is connected with the filler opening of low pressure oil extraction pipeline (102), on low pressure oil extraction pipeline (102), be in series with the low pressure lotus electromagnetic relief valve (21) of often starting discharging, the oil outlet of low pressure oil extraction pipeline (102) is connected with the oil inlet end of return line (103), the oil outlet on described low-pressure oil delivery pipe road (101) by oil distributing pipe road (107) respectively with the filler opening of the first servo hydraulic cylinder system, the filler opening of the second servo hydraulic cylinder system, the filler opening of the 3rd servo hydraulic cylinder system is connected with the filler opening of the 4th servo hydraulic cylinder system,
Described fuel tank (1) is connected with the filler opening of high-pressure shaft to quantitative plunger pump (14) by high pressure in-line (104), the inlet of high pressure in-line (104) is provided with pressure duct coarse-grain filtering device (41), high pressure in-line (104) has pressure ball valve (9) and high pressure compensator (10) from entrance point to outlet end installed in series in order, described high-pressure shaft is connected with the filler opening of high-pressure pipeline road (105) to the oil outlet of quantitative plunger pump (14), there is high pressure inlet oil filter (19) on high-pressure pipeline road (105) and can allows hydraulic oil flow to the high pressure one-way valve (20) of outlet end to outlet end installed in series in order from entrance point, the pipeline section being positioned on high-pressure pipeline road (105) between high pressure inlet oil filter (19) and high pressure one-way valve (20) is connected with the filler opening of high pressure oil extraction pipeline (106), on high pressure oil extraction pipeline (106), be in series with the pilot-operated proportional relief valve (22) with external amplification board, the oil outlet of high pressure oil extraction pipeline (106) is connected with the oil inlet end of return line (103), the oil outlet on described high-pressure pipeline road (105) by described oil distributing pipe road (107) respectively with the filler opening of described the first servo hydraulic cylinder system, the filler opening of described the second servo hydraulic cylinder system, the filler opening of described the 3rd servo hydraulic cylinder system is connected with the filler opening of described the 4th servo hydraulic cylinder system,
Described the first servo hydraulic cylinder system comprises the first servo hydraulic cylinder (331), the first in-line (108), the first return line (109) and the first normal close type 3-position 4-way electrohydraulic control (311), the filler opening of the first servo hydraulic cylinder system is the filler opening of the first in-line (108), on the first in-line (108), be in series with the first high pressure filter (561) that band stops up warning function, the oil outlet of the first in-line (108) is connected with the oil-feed port P of described the first normal close type 3-position 4-way electrohydraulic control (311), the filler opening of the first return line (109) is connected with the drain tap T of the first normal close type 3-position 4-way electrohydraulic control (311), the oil outlet of the first return line (109) is connected with the oil inlet end of described return line (103), the hydraulic fluid port A of described normal close type 3-position 4-way electrohydraulic control (311) is connected with the lower active chamber of described the first servo hydraulic cylinder (331) by first time active chamber pipeline road (110), first valve (291) that contends with is installed on first time active chamber pipeline road (110), first valve (291) that contends with has the unidirectional logical oily path of lower active chamber to the first servo hydraulic cylinder (331), on first time active chamber pipeline road (110), be positioned at the first pipeline contending with between valve (291) and the lower active chamber of described the first servo hydraulic cylinder (331) and be provided with the first lower pressure sensor (326), on first time active chamber pipeline road (110), being positioned at described the first normal close type 3-position 4-way electrohydraulic control (311) and the first pipeline contending with between valve (291) is connected with the oil inlet end of return line (103) by being in series with the pipeline of No. 1 position bi-bit bi-pass solenoid directional control valve (391), the hydraulic fluid port B of described normal close type 3-position 4-way electrohydraulic control (311) passes through active chamber pipeline road (111) on first and is connected with the upper active chamber of described the first servo hydraulic cylinder (331), on first, active chamber pipeline road (111) is provided with the first upward pressure sensor (321), cylinder body and the frame of described the first servo hydraulic cylinder (331) are fixedly linked, in the cylinder body of the first servo hydraulic cylinder (331), be provided with the first displacement transducer (371), the first displacement transducer (371) can be measured the movement of cylinder block position of the first servo hydraulic cylinder (331), and analog electric signal is passed to electric control system,
The described first control port that contends with valve (291) is connected with active chamber pipeline road (111) on described first by pipeline;
Described the second servo hydraulic cylinder system comprises the second servo hydraulic cylinder (332), the second in-line (112), the second return line (113) and the second normal close type 3-position 4-way electrohydraulic control (312), the filler opening of the second servo hydraulic cylinder system is the filler opening of the second in-line (112), on the second in-line (112), be in series with the second high pressure filter (562) that band stops up warning function, the oil outlet of the second in-line (112) is connected with the oil-feed port P of described the second normal close type 3-position 4-way electrohydraulic control (312), the filler opening of the second return line (113) is connected with the drain tap T of the second normal close type 3-position 4-way electrohydraulic control (312), the oil outlet of the second return line (113) is connected with the oil inlet end of described return line (103), the hydraulic fluid port A of described the second normal close type 3-position 4-way electrohydraulic control (312) is connected with the lower active chamber of described the second servo hydraulic cylinder (332) by second time active chamber pipeline road (114), second valve (292) that contends with is installed on second time active chamber pipeline road (114), second valve (292) that contends with has the unidirectional logical oily path of lower active chamber to the second servo hydraulic cylinder (332), on second time active chamber pipeline road (114), be positioned at the second pipeline contending with between valve (292) and the lower active chamber of described the second servo hydraulic cylinder (332) and be provided with the second lower pressure sensor (327), on second time active chamber pipeline road (114), being positioned at described the second normal close type 3-position 4-way electrohydraulic control (312) and the second pipeline contending with between valve (292) is connected with the oil inlet end of return line (103) by being in series with the pipeline of No. 2 position bi-bit bi-pass solenoid directional control valves (392), the hydraulic fluid port B of described the second normal close type 3-position 4-way electrohydraulic control (312) passes through active chamber pipeline road (115) on second and is connected with the upper active chamber of described the second servo hydraulic cylinder (332), on second, active chamber pipeline road (115) is provided with the second upward pressure sensor (322), cylinder body and the frame of described the second servo hydraulic cylinder (332) are fixedly linked, in the cylinder body of the second servo hydraulic cylinder (332), be provided with second displacement sensor (372), second displacement sensor (372) can be measured the movement of cylinder block position of the second servo hydraulic cylinder (332), and analog electric signal is passed to electric control system,
The described second control port that contends with valve (292) is connected with active chamber pipeline road (115) on described second by pipeline;
Described the 3rd servo hydraulic cylinder system comprises the 3rd servo hydraulic cylinder (333), the 3rd in-line (116), the 3rd return line (117) and the 3rd normal close type 3-position 4-way electrohydraulic control (313), the filler opening of the 3rd servo hydraulic cylinder system is the filler opening of the 3rd in-line (116), on the 3rd in-line (116), be in series with the third high press filtration device (563) that band stops up warning function, the oil outlet of the 3rd in-line (116) is connected with the oil-feed port P of described the 3rd normal close type 3-position 4-way electrohydraulic control (313), the filler opening of the 3rd return line (117) is connected with the drain tap T of the 3rd normal close type 3-position 4-way electrohydraulic control (313), the oil outlet of the 3rd return line (117) is connected with the oil inlet end of described return line (103), the hydraulic fluid port A of described the 3rd normal close type 3-position 4-way electrohydraulic control (313) is connected with the lower active chamber of described the 3rd servo hydraulic cylinder (333) by the 3rd time active chamber pipeline road (118), the 3rd valve (293) that contends with is installed on the 3rd time active chamber pipeline road (118), the 3rd valve (293) that contends with has the unidirectional logical oily path of lower active chamber to the 3rd servo hydraulic cylinder (333), on the 3rd time active chamber pipeline road (118), be positioned at the 3rd pipeline contending with between valve (293) and the lower active chamber of described the 3rd servo hydraulic cylinder (333) and be provided with the 3rd lower pressure sensor (328), on the 3rd time active chamber pipeline road (118), being positioned at described the 3rd normal close type 3-position 4-way electrohydraulic control (313) and the 3rd pipeline contending with between valve (293) is connected with the oil inlet end of return line (103) by being in series with the pipeline of No. 3 position bi-bit bi-pass solenoid directional control valves (393), the hydraulic fluid port B of described the 3rd normal close type 3-position 4-way electrohydraulic control (313) passes through active chamber pipeline road (119) on the 3rd and is connected with the upper active chamber of described the 3rd servo hydraulic cylinder (333), on the 3rd, active chamber pipeline road (119) is provided with the 3rd upward pressure sensor (323), cylinder body and the frame of described the 3rd servo hydraulic cylinder (333) are fixedly linked, in the cylinder body of the 3rd servo hydraulic cylinder (333), be provided with triple motion sensor (373), triple motion sensor (373) can be measured the movement of cylinder block position of the 3rd servo hydraulic cylinder (333), and analog electric signal is passed to electric control system,
The described the 3rd control port that contends with valve (293) is connected with active chamber pipeline road (119) on the described the 3rd by pipeline;
Described the 4th servo hydraulic cylinder system comprises the 4th servo hydraulic cylinder (334), the 4th in-line (120), the 4th return line (121) and the 4th normal close type 3-position 4-way electrohydraulic control (314), the filler opening of the 4th servo hydraulic cylinder system is the filler opening of the 4th in-line (120), on the 4th in-line (120), be in series with the 4th high pressure filter (564) that band stops up warning function, the oil outlet of the 4th in-line (120) is connected with the oil-feed port P of described the 4th normal close type 3-position 4-way electrohydraulic control (314), the filler opening of the 4th return line (121) is connected with the drain tap T of the 4th normal close type 3-position 4-way electrohydraulic control (314), the oil outlet of the 4th return line (121) is connected with the oil inlet end of described return line (103), the hydraulic fluid port A of described the 4th normal close type 3-position 4-way electrohydraulic control (314) is connected with the lower active chamber of described the 4th servo hydraulic cylinder (334) by the 4th time active chamber pipeline road (122), the 4th valve (294) that contends with is installed on the 4th time active chamber pipeline road (122), the 4th valve (294) that contends with has the unidirectional logical oily path of lower active chamber to the 4th servo hydraulic cylinder (334), on the 4th time active chamber pipeline road (122), be positioned at the 4th pipeline contending with between valve (294) and the lower active chamber of described the 4th servo hydraulic cylinder (334) and be provided with the 4th lower pressure sensor (329), on the 4th time active chamber pipeline road (122), being positioned at described the 4th normal close type 3-position 4-way electrohydraulic control (314) and the 4th pipeline contending with between valve (294) is connected with the oil inlet end of return line (103) by being in series with the pipeline of No. 3 position bi-bit bi-pass solenoid directional control valves (394), the hydraulic fluid port B of described the 4th normal close type 3-position 4-way electrohydraulic control (314) passes through active chamber pipeline road (123) on the 4th and is connected with the upper active chamber of described the 4th servo hydraulic cylinder (334), on the 4th, active chamber pipeline road (123) is provided with the 4th upward pressure sensor (324), cylinder body and the frame of described the 4th servo hydraulic cylinder (334) are fixedly linked, in the cylinder body of the 4th servo hydraulic cylinder (334), be provided with the 4th displacement transducer (374), the 4th displacement transducer (374) can be measured the movement of cylinder block position of the 4th servo hydraulic cylinder (334), and analog electric signal is passed to electric control system,
The described the 4th control port that contends with valve (294) is connected with active chamber pipeline road (123) on the described the 4th by pipeline;
Described return line (103) is upper has return check valve (28), tube still type water cooler (35) and return filter (50) from entrance point to outlet end installed in series in order, return filter (50) is located to be provided with for measuring the differential pressure switch of return filter (50) two ends pressure reduction, the two ends of return filter (50) are connected by bypass oil pipe, on the bypass oil pipe at return filter (50) two ends, are in series with the one-way valve that can allow hydraulic oil flow to described fuel tank (1).
2. the hydraulic pressure press of processing transformer coil according to claim 1, it is characterized in that described low pressure inlet oil filter (18) locates to be provided with for measuring the differential pressure switch of low pressure inlet oil filter (18) two ends pressure reduction, the two ends of low pressure inlet oil filter (18) are connected by bypass oil pipe, are in series with the one-way valve that can allow hydraulic oil flow to described oil distributing pipe road (107) on the bypass oil pipe at low pressure inlet oil filter (18) two ends; Described high pressure inlet oil filter (19) is located to be provided with for measuring the differential pressure switch of high pressure inlet oil filter (19) two ends pressure reduction, the two ends of high pressure inlet oil filter (19) are connected by bypass oil pipe, are in series with the one-way valve that can allow hydraulic oil flow to described oil distributing pipe road (107) on the bypass oil pipe at high pressure inlet oil filter (19) two ends.
3. the hydraulic pressure press of processing transformer coil according to claim 2, it is characterized in that described oil distributing pipe road (107) is connected with capsule-type accumulator (27) by accumulation of energy pipeline (124), accumulation of energy pipeline (124) is provided with stop valve and relief valve (23), and the flow-off of relief valve (23) is connected with described fuel tank (1) by pipeline.
4. according to the hydraulic pressure press of the transformer coil processed described in claim 1 or 2 or 3, it is characterized in that described fuel tank (1) is connected with the filler opening of gear pump (43) by emergent in-line (125), the inlet of emergent in-line (125) is provided with emergency line filter (49), the oil outlet of described gear pump (43) is connected with the filler opening of emergent pipeline road (126), on emergent pipeline road (126), direct-acting overflow valve (47) is installed and can allows hydraulic oil flow to the emergent one-way valve (48) on described oil distributing pipe road (107), the outlet of emergent pipeline road (126) is connected with oil distributing pipe road (107).
5. the hydraulic pressure press of processing transformer coil according to claim 4, the bottom that it is characterized in that described fuel tank (1) is provided with internal thread fuel outlet ball valve (2), the level meter (3) showing with temperature is installed on the sidewall of fuel tank (1), the top of fuel tank (1) is provided with the fluid level transmitter (4) with analog signal output, fuel tank (1) is provided with hydraulic air filter (5), bimetallic thermometer (11) with double switch amount, fluid level controller (55) with double switch amount, with simulation output, can monitor in real time temperature transmitter (51) and bar type magnetic filter (52) that the interior oil temperature of fuel tank (1) changes.
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| CN201210314012.2A CN103671313B (en) | 2012-08-30 | 2012-08-30 | The hydraulic pressure press of transformer coil can be processed |
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| CN106438520A (en) * | 2016-12-17 | 2017-02-22 | 中国重型机械研究院股份公司 | Cooling bed lifting hydraulic synchronous control device |
| CN110307199A (en) * | 2018-03-27 | 2019-10-08 | 比亚迪股份有限公司 | A kind of hydraulic control system |
| CN113123766A (en) * | 2021-05-11 | 2021-07-16 | 姜经志 | Energy-saving and environment-friendly high-reliability pump control hydraulic system of hydraulic pumping unit |
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