CN204344547U - Multifunction hydraulic power station - Google Patents
Multifunction hydraulic power station Download PDFInfo
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- CN204344547U CN204344547U CN201420629645.7U CN201420629645U CN204344547U CN 204344547 U CN204344547 U CN 204344547U CN 201420629645 U CN201420629645 U CN 201420629645U CN 204344547 U CN204344547 U CN 204344547U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Abstract
The utility model relates to a kind of multifunction hydraulic power station, primarily of two pump groups, electric control boxs, hand-operated direction valve, one-way valve, relief valve, accumulator, hand reducing pressure pressure adjustment relief valve, normally closed solenoid valve, normally open solenoid valve, stop valve, high pressure oil output terminal, automatic controller form.This hydraulic power station, on the basis possessing original function, overcome the shortcoming and defect of former hydraulic power station, add and regulate arbitrarily oil pressure for load provides, control best torque, energy storage apparatus, multi-functionally to switch, the function such as unloaded delayed startup, automatically controls, easy and simple to handle, saving electric energy more than 50%.The utility model can provide hydraulic power for multiple oil drilling tool, also can provide hydraulic power, reach energy-conservation for high pressure liquid force feed need be leaned on to be other industry of other Hydraulic power tools of medium, effect that accumulation of energy, moment of torsion are controlled.
Description
Technical field
The utility model relates to oil recovery, the gas production machinery of oil drilling, specifically a kind ofly provides the equipment of hydraulic power for oil drilling tool.
Background technique
The major function of hydraulic power station is for oil drilling tool (as drill pipe tong, sleeve power tongs) provides hydraulic power.Drilling tool is for drilling rod or sleeve pipe provide the device unloading tubing string screw thread.
Conventional hydraulic power station, entirety is oil tank overhead type structure, and it is primarily of fuel tank, a pump group and pump group electric control box composition, and pump group is placed in fuel tank bottom.This pump group is formed by connecting by before and after low pressure ball valve, filter cleaner, plunger pump, motor, and motor provides driving power for plunger pump.Hydraulic oil in fuel tank, under the control of the start-stop push button of electric control box, is exported as load drilling tool provides driving power by connecting line by pump group.
Conventional hydraulic power station for load hydraulic power is provided time, the size of load torque controls by operator entirely, so require higher to the technical capability of operator, too increases the stress of operator.Nonetheless, still can not avoid the excessive or too small situation of load torque occurs, being difficult to the quality of proof load---moment of torsion when namely drilling rod or sleeve pipe unloading tubing string screw thread is excessive or too small, causes product disqualification rate high, and even damages---phenomenon of bad tubing string screw thread is namely turned round because moment of torsion is excessive; Because electric control box controls by start-stop button, there is the off time of more than 60% (tempus intercalare pump group is still in the operating mode of no-load running) in the course of the work, pump group is caused always to be in ceaselessly among running state, especially summer, hydraulic fluid temperature is high, not only waste of energy is serious, and because of hydraulic oil long for without hindrance cycle time, hydraulic oil quick heating, poor stability.
Model utility content
For overcoming the shortcoming and defect that conventional hydraulic power station exists, the purpose of this utility model is: provide a kind of and can be that load regulates arbitrarily oil pressure, controls best torque, accumulating energy-saving, multi-functionally to switch, unloaded delayed startup, automatically control, save the novel hydraulic power station of energy consumption.
the utility model is achieved in that
The multifunctional solution pressure power station of the utility model; there are fuel tank 1, No. 1 pump group and No. 1 pump group electric control box; No. 1 pump group is placed in fuel tank 1 bottom; this No. 1 pump group is formed by connecting by before and after the first low pressure ball valve 2, first filter cleaner 4, first plunger pump 6, first motor 8, and the first motor 8 provides driving power for the first plunger pump 6; When the first air-break switch QF1 and the 3rd air-break switch QF3 close a floodgate, the first control switch QT1 and the first hand-operated direction valve 18 be placed in manual operating mode, by manual hand manipulation for load provides hydraulic power simultaneously.
Of the present utility modelly to it is characterized in that: have No. 2 pump groups; There are the first hand-operated direction valve 18 and the second hand-operated direction valve 19, first one-way valve 20, second one-way valve 22, the 3rd one-way valve 21 and the 4th one-way valve 23, accumulator 28, hand reducing pressure pressure adjustment relief valve 29, first normally closed solenoid valve 31 and the second normally closed solenoid valve 32, first normally open solenoid valve 10 and the second normally open solenoid valve 11, first stop valve 25, second stop valve 26 and the 3rd stop valve 33; There is automatic controller;
Described No. 1 pump group and No. 2 pump groups, be parallel relationship, the two structure is identical;
No. 1 pump group is connected with the first hand-operated direction valve 18, this first hand-operated direction valve 18 is connected with two one-way valves more respectively, wherein the first one-way valve 20 is connected to high pressure oil output terminal 34, second 22 points, one-way valve two-way connects, one road connects accumulator 28 after being connected to stop valve 25 again, another road divides again two-way to connect: the first via arrives fuel tank 1 through the second stop valve 26, second tunnel is after high pressure filter 27, two-way is divided to connect again: the first via is connected to merge after the 3rd stop valve 33 is connected through hand reducing pressure pressure adjustment relief valve 29 with the second tunnel and connected after the first normally closed solenoid valve 31 connects, finally export from high pressure oil output terminal 34,
The output terminal of described No. 1 pump group first plunger pump 6, be connected in parallel the first pressure transmitter 12, the pressure signal of this first pressure transmitter 12 induction, after being delivered to the input end of the first digital display control instrument 36, by the first digital display control instrument 36 output terminal output control automatically signal, control the start and stop of the first A.C. contactor KM1 of main circuit in the first explosion-proof electric control box 14 again, realize the start and stop automatically controlling No. 1 pump group;
First normally open solenoid valve 10, first relief valve 16 and No. 1 pump group are connected in parallel between fuel tank 1 and the first hand-operated direction valve 18, realize unloaded delayed startup and the ultrahigh pressure automatic overflow of No. 1 pump group;
No. 2 pump groups are connected with the second hand-operated direction valve 19; this second hand-operated direction valve 19 is connected with two one-way valves more respectively; wherein the 3rd one-way valve 21 is connected to the 23 points of two-way connections of high pressure oil output terminal the 34, four one-way valve: a road connects accumulator 28 after being connected to the first stop valve 25 again; Another road divides again two-way to connect: the first via arrives fuel tank 1 through the second stop valve 26; second tunnel is after high pressure filter 27; two-way is divided to connect again: the first via is connected to merge after the 3rd stop valve 33 is connected through hand reducing pressure pressure adjustment relief valve 29 with the second tunnel and connected after the second normally closed solenoid valve 32 connects, and finally exports from high pressure oil output terminal 34;
The output terminal of described No. 2 pump group second plunger pumps 7, be connected in parallel the second pressure transmitter 13, the pressure signal of this second pressure transmitter 13 induction, after being delivered to the input end of the second digital display control instrument 37, by the second digital display control instrument 37 output terminal output control automatically signal, control the start and stop of the second A.C. contactor KM2 of main circuit in the second explosion-proof electric control box 15 again, realize the start and stop automatically controlling No. 2 pump groups;
Second normally open solenoid valve 11, second relief valve 17 and No. 2 pump groups are connected in parallel between fuel tank 1 and the second hand-operated direction valve 19, realize unloaded delayed startup and the ultrahigh pressure automatic overflow of No. 2 pump groups;
Described automatic controller, between the plunger Pump and Electromotor being arranged on pump group, is made up of pressure transmitter and explosion-proof electric control box; This explosion-proof electric control box, is made up of main circuit and automatic control circuit, and main circuit and automatic control circuit are parallel relationship;
Described main circuit: be connected in series to be connected in series with the second air-break switch QF2, the second A.C. contactor KM2 and the second thermorelay FR2 by the first air-break switch QF1, the first A.C. contactor KM1 and the first thermorelay FR1 and jointly form;
Described automatic control circuit, by the 3rd air-break switch QF3, first DC relay KM3, second DC relay KM4, 3rd DC relay KM5 and the 4th DC relay KM6, first control switch QT1, second control switch QT2, 3rd control switch QT3 and the 4th control switch QT4, first button SB1, second button SB2, 3rd button SB3 and the 4th button SB4, first AC relay KM 1 and the second AC relay KM2, first time delay relay KT1 and the second time delay relay KT2, first normally open solenoid valve 10 and the second normally open solenoid valve 11, first normally closed solenoid valve 31 and the second normally closed solenoid valve 32, first digital display control instrument 36 and the second digital display control instrument 37, DC electrical source 38 is formed, the coil of DC relay and digital display control instrument are series relationship, the coil of the contact of DC relay and the control A.C. contactor of main circuit is series relationship, and the coil of the control A.C. contactor of time delay relay, normally open solenoid valve, normally closed solenoid valve and main circuit is parallel relationship,
Described accumulator 28, is made up of the accumulator steel cylinder of more than 2, in being connected in parallel, and the capsule of built-in inflated with nitrogen.The accumulation of energy principle of accumulator 28 is: when control switch is placed in automatic operating; accumulator 28 plays the effect of accumulation of energy; realize No. 1 pump group and No. 2 pump groups in the intervals of business time shut down---avoid the no-load running during working clearance, reach accumulation of energy and the energy-saving effect of multifunction hydraulic power station.
Pipeline between the first stop valve 25 and fuel tank 1 is provided with the second stop valve 26.
Pipeline between the first hand-operated direction valve 18 and the first stop valve 25 is provided with the second one-way valve 22; Pipeline between first hand-operated direction valve 18 and high pressure oil output terminal 34 is provided with the first one-way valve 20; The pipeline that pipeline between second hand-operated direction valve 19 and the first stop valve 25 is provided with between the 4th one-way valve 23, first hand-operated direction valve 18 and high pressure oil output terminal 34 is provided with the 3rd one-way valve 21.
On pipeline between high pressure filter 27 and high pressure oil output terminal 34, be provided with hand reducing pressure pressure adjustment relief valve 29, the 3rd stop valve 33 and the first normally closed solenoid valve 31 and the second normally closed solenoid valve 32 in parallel relationship, for load provides the driving power (high pressure oil) of various combination under different operating modes.
The working principle of the hydraulic power station of the utility model is: when the first hand-operated direction valve 18 (or second hand-operated direction valve 19), first control switch QT1 (or second control switch QT2) is placed in automatic operating: a kind of operating mode is, 3rd control switch QT3 (or the 4th control switch QT4) is placed in semi-automatic, first normally closed solenoid valve 31 (or second normally closed solenoid valve 32) is opened, accumulator 28 high pressure liquid force feed is opened through the first normally closed solenoid valve 31 (or second normally closed solenoid valve 32), accumulator 28 high pressure liquid force feed directly exports from high pressure oil output terminal 34 through the first normally closed solenoid valve 31 (or second normally closed solenoid valve 32), another kind of operating mode is, 3rd control switch QT3 (or the 4th control switch QT4) is placed in automatically, first normally closed solenoid valve 31 (or second normally closed solenoid valve 32) is closed, accumulator 28 high pressure liquid force feed is handled dynamic decompression pressure adjustment relief valve 29 and is reduced pressure after voltage-regulation voltage-stabilization, after manually opened 3rd stop valve 33, then export from high pressure oil output terminal 34, realize No. 1 pump group and No. 2 pump groups are semi-automatic and full automatic several functions is switched.
It is adjustable that the hydraulic power station of the utility model can realize output oil pressure size, and its method is:
When the first hand-operated direction valve 18 is placed in automatic operating, the first explosion-proof electric control box 14 first air-break switch QF1 and the 3rd air-break switch QF3 closes a floodgate, and the first air-break switch control switch QT1 is placed in automatic operating, and the 3rd control switch QT3 is placed in full-automatic operating mode;
When the second hand-operated direction valve 19 is placed in automatic operating, the second air-break switch QF2 and the 3rd air-break switch QF3 of the second explosion-proof electric control box 15 close a floodgate, and the second control switch QT2 is placed in automatic operating, and the 4th control switch QT4 is placed in full-automatic operating mode;
These two kinds full-automatic operating modes simultaneously or for the moment, output terminal is made to have the oil pressure of any modification stability of size according to load regulation hand reducing pressure pressure adjustment relief valve 29.
This hydraulic power station; the method realizing three-phase electricity input end default-phase protection function is: when the first air-break switch QF1, the second air-break switch QF2, the 3rd air-break switch QF3 close a floodgate; the three-phase electricity input end of L1, L2, L3 lacks a phase time arbitrarily; automatic controller all can not control No. 1 and the work of No. 2 pump groups, and No. 1 and No. 2 pump groups are in shutdown operating mode.
The method that this hydraulic power station pump group implements unloaded delayed startup is: when the first air-break switch QF1 and the 3rd air-break switch QF3 closes a floodgate; a kind of operating mode is that the first control switch QF1 is when being in automatic and manual operating mode; normally could close after the first normally open solenoid valve 10 that No. 1 pump group plunger pump exports needs the first time delay relay KT1 time delay to terminate, realize the unloaded delayed startup of No. 1 pump group; Another kind of operating mode is, when second air-break switch QF2 and the 3rd air-break switch QF3 closes a floodgate, when control switch QT2 is in automatic and manual operating mode, after the second normally open solenoid valve 11 that No. 2 pump group plunger pumps export needs the second time delay relay KT2 time delay to terminate, normally could close, realize the unloaded delayed startup of No. 2 pump groups.
Innovation of the present utility model is:
One. set up the accumulating energy-saving facility of power station
Increase and have 2-8 total capacity 50-200L accumulator 28, accumulator 28 is made up of 2-8 steel cylinder, this 2-8 accumulator steel cylinder is in being connected in parallel, steel cylinder is built with capsule, 2-6MPa inert nitrogen gas is filled in capsule, high pressure liquid force feed enters extruding in steel cylinder and is full of the capsule of nitrogen, and reach the object of the high pressure liquid force feed storing certain capacity, being embodied as load provides continuous print high pressure liquid force feed; When high-pressure and hydraulic oil pressure is not enough, in accumulator 28, supplement high pressure liquid force feed through No. 1 or No. 2 pump groups in time by automatic control system, because of time operating time much smaller than working clearance, it is more that motor is in standby time, finally reaches the object of accumulating energy-saving.
Two. set up hydraulic fluid pressure automatic controller
The utility model, in the traditional circuit realizing controlling to the pressure of hydraulic oil, adds the automatic controller be made up of pressure transmitter 12 and the first explosion-proof electric control box 14 and the second pressure transmitter 13 and explosion-proof electric control box 15.
That is: the first pressure transmitter 12 can sense the change in electric of hydraulic fluid pressure size, for the first digital display control instrument 36 provides the automatic control electric signal of input, reach the start and stop 24V VDC automatically controlling the first digital display control instrument 36 output terminal 8 foot, 24V VDC controls the start and stop of the first DC relay KM3 again, thus realizes the device that the first A.C. contactor KM1 controls the first motor M 1 start and stop automatically.
The effect of automatic controller, be allow the first motor M 1 and the 2nd M2 arrange at hydraulic oil upper and lower between work (according to the design of load actual conditions), and press load request preferably function selection between semi-automatic, full-automatic.During because stopping using load midway, motor quits work, and finally reaches the object of saving power---electric energy more than 50% can be saved; Meanwhile, the without hindrance cycle time of hydraulic oil reduces, and hydraulic oil heats up slow, and Security is good.
Three. set up the device that output oil pressure size regulates arbitrarily
Set up a hand reducing pressure pressure adjustment relief valve 29, be arranged between high pressure filter 27 and the 3rd stop valve 33, its effect manually regulates hand reducing pressure pressure adjustment relief valve 29 can regulation output oil pressure (this oil pressure is lower than the input end oil pressure) oil pressure that size is stable arbitrarily, and after set pressure because of the change of load produce abnormal pressure fluctuation as higher than during setting oil pressure value by pressure relief opening automatic overflow, ensure oil pressure reliable and stable; Output oil pressure corresponding according to torque value size adjustment in actual use, ensures that the Maximum Torque of each adjustment pressure back loading is equal.Advantage to alleviate skill set requirements to operator and attention, reduces rate of fault, ensure the load quality of drilling tool better.
Four. increase the switch function of several functions
Increase by the first hand-operated direction valve 18 and the second hand-operated direction valve 19 and the first normally closed solenoid valve 31, second normally closed solenoid valve 32.Hand-operated direction valve is arranged between plunger pump and accumulator and high pressure oil export, normally closed solenoid valve is arranged on high pressure filter 27 and high pressure oil exports between 34, Main Function is: hand-operated direction valve is placed in manual position, and function is substantially identical with former hydraulic power station function; First control switch QT1 and the second control switch QT2 is placed in automated location, by controlling different operating mode, can complete the what's new of first three items, and automatically the switching of semi-automatic and full-automatic output function.
Five. increase the automatic shutdown function of power station oil pressure maximum setting
By at primary power supply and access the 3rd DC relay KM5 and the 4th DC relay KM6 contact between the first control switch QT1 and the second control switch QT2, the oil pressure pressure signal sensed by the first pressure transmitter 12 and the second pressure transmitter 13 is transferred to the break-make that the first digital display control instrument 36 and the second digital display control instrument 37 control the 3rd DC relay KM5 and the 4th DC relay KM6 contact, when reaching the maximum oil pressure value of power station, (this value is close to the value of relief valve, be greater than the upper limit set value automatically controlled) effect of autostop, and be unlikely to the too high startup relief valve of oil pressure pressure (because the relief valve reliable overflow surely that differs causes system pressure too high), the integrity of better protective system.
Six. increase the unloaded delayed startup function of pump group
When whole power station is operated in manual operating mode, when pump group starts, hydraulic fluid pressure is zero, the same with the operating mode of former hydraulic power station.
When automatic operating: if the first motor M 1 is when automatic operating starts, first normally open solenoid valve 10 is in the condition that often goes into operation, hydraulic fluid pressure is zero, after the electrical signal that first pressure transmitter 12 is responded to is input to the first digital display control instrument 36, output terminal 8 pin of the first digital display control instrument 36 obtains+24V voltage and exports, make the first DC relay KM3 adhesive, the main electric shock adhesive of first DC relay KM3, first A.C. contactor KM1 adhesive and the first time delay relay KT1 are energized simultaneously, adhesive after 5-10 time delay second, + 24V direct current connects the first normally open solenoid valve 10, first normally open solenoid valve 10 cuts out, unloaded delayed startup completes, play the effect of protection pump group, when motor quits work, the first normally open solenoid valve 10 power-off, is in normally open again, periodic duty like this, and reach the function of the unloaded delayed startup of pump group, extend the service time of pump group, electric motor starting electric current is less.
Seven, representative
This multifunction hydraulic power station is representative one design, can design the hydraulic power station of various combination, to meet different load requests, accomplish practical function, save material according to practical application.
Eight, expansion
On this representative multifunction hydraulic power station basis, also can increase other function, as summer oil temperature higher than the automatic cooling function of setting value, winter, oil temperature was lower than the automatic heating function of setting value, hand-operated direction valve is designed to solenoid directional control valve, high pressure oil output terminal 34 normally closed solenoid valve of connecting can control to export high pressure oil output terminal automatically, hand reducing pressure pressure adjustment relief valve can set up many groups (according to practical application, different output oil pressures drives different drilling tools), hand reducing pressure pressure adjustment relief valve is if make automatic Regulation relief valve, just output oil pressure automatic control function can be realized.Finally realize computer Automatic Control multifunction hydraulic power station provides different driving power more system for overlapping load.
Compared with prior art, the beneficial effect had is the utility model:
1, output oil pressure size regulates arbitrarily: according to the size of load torque, calculate corresponding oil pressure, the output oil pressure of Manual adjustment pressure reducing pressure adjustment relief valve, just can meet the maximum of load or best torque, realize whole load torque equal, greatly reduce skill set requirements and the stress of operator.
2, energy saving device is increased: between working interval, accumulator oil pressure reaches the upper limit, and motor quits work (the general operation intermittent time is much larger than the operating time), estimates the electric energy of saving more than 50%.While reducing the machine operation time, also reduce the cycle time of hydraulic oil, make oil temperature lower, Security is higher.
3, increase energy storage apparatus: reduce delivery pressure pulsation, output oil pressure is stablized, and boosting slowly, fluctuate very little, also can ensure that motor reaches when arranging oil pressure CLV ceiling limit value, motor quits work (when working intermittently).
4, adopt the work of two-shipper pump group: original motor power, by 37KW, is adjusted to two 18.5KW motor, adopt two-shipper pump group structure, the work of unit pump group substantially can proof load requirement, can adopt the work of two-shipper pump group during special high moment of torsion huge discharge.Reduce on-the-spot electricity consumption total load, be beneficial to overhaul of the equipments (treats with), improve the integrity of equipment.
5, keep original function constant: to increase oil pressure and reach the protective function that the work of CLV ceiling limit value stopping pump group is set.
6, the unloaded delayed startup of pump group is increased: reduce electric motor starting electric current, improve the integrity of pump group, not fragile pump group.
7, three-phase electricity input end open-phase protection is possessed: better protection motor and automatic controller intact.
8, the oil pressure upper limit (maximum value) power-off protection: the oil pressure upper limit (maximum value) protection can be set by automatic controller before relief valve overflow; automatic out-of-work function and effect before can realizing the overflow of motor relief valve; substantially can not there is overflow phenomena in relief valve, system is safer.
The utility model is applicable to petroleum industry for multiple drilling tool provides hydraulic power, also can provide hydraulic power for other other Hydraulic power tools that to need by high pressure liquid force feed be medium, main purpose reaches energy-conservation, effect that accumulation of energy, moment of torsion are controlled.
Accompanying drawing explanation
Fig. 1 is structure and the hydraulic principle schematic diagram of the utility model multifunction hydraulic power station;
Fig. 2 is circuit structure and the electronic schematic diagram of the utility model multifunction hydraulic power station.
Embodiment
A kind of novel hydraulic power station of embodiment
The present embodiment completes by the design of two accompanying drawings:
Fig. 1 shows structure and the hydraulic work principle of the hydraulic power station of the present embodiment
As shown in Figure 1: 1 is fuel tank, 2 and 3 is low pressure ball valves, 4 and 5 is low pressure filter cleaners, 6 and 7 is plunger pumps, 8 is motor M 1 (explosion-proof), 9 is motor M 2 (explosion-proof), 10, 11 is normally open solenoid valves, 12 and 13 is electronic pressure transmitters, 14 and 15 is explosion-proof electric control boxes, 16 and 17 is relief valves, 18 and 19 is hand-operated direction valves, 20, 21, 22, 23 is one-way valves, , 25, 26 and 33 is stop valves, 27 is high pressure filters, 28 is accumulators, 29 is hand reducing pressure pressure adjustment relief valves, 31, 32 is normally closed solenoid valves, 24, 30 and 35 is pressure gauges, 34 is high pressure oil output terminals.
This multifunction hydraulic power station is that fuel tank is put, and pump group is placed in fuel tank bottom, and No. 1 pump group and No. 2 pump groups are parallel relationship;
At the output terminal of No. 1 pump group, the first via connects the first pressure transmitter 12, first explosion-proof electric control box 14, the pressure signal that first pressure transmitter 12 is responded to, after being delivered to the input end of the first digital display control instrument 36, controlled the start and stop of the A.C. contactor in explosion-proof electric control box 14 by the first digital display control instrument 36 output terminal, realize the start and stop of control No. 1 pump group; Second tunnel connects first and connects normally open solenoid valve 10, is connected to fuel tank 1, and the 3rd tunnel connects the first relief valve 16, is connected to fuel tank 1; 4th tunnel connects the first hand-operated direction valve 18, this hand-operated direction valve 18 is connected with two one-way valves more respectively: wherein the first one-way valve 20 is connected to high pressure oil output terminal 34, second 22 points, one-way valve two-way connects, and a road is connected to energy storage pressure table 24 and is connected accumulator 28 with after the first stop valve 25; Fuel tank 1 got back to by two tunnel second stop valves 26, after three path high pressure filters 27, is connected in parallel the first normally closed solenoid valve 31 and hand reducing pressure pressure adjustment relief valve 29, after connecting stop valve 33, then connects high pressure oil output terminal 34, exports.
At the output terminal of No. 2 pump groups, the first via connects the second pressure transmitter 13, second explosion-proof electric control box 15, the pressure signal that second pressure transmitter 13 is responded to, after being delivered to the input end of the second digital display control instrument 37, controlled the start and stop of the A.C. contactor in the second explosion-proof electric control box 15 by the second digital display control instrument 37 output terminal, realize the start and stop of control No. 2 pump groups; Second tunnel connects the second normally open solenoid valve 11, is connected to fuel tank 1; 3rd tunnel connects the second relief valve 17, is connected to fuel tank 1; 4th tunnel connects the second hand-operated direction valve 19, this hand-operated direction valve 19, be connected with two one-way valves respectively again: wherein the 3rd one-way valve 21 is connected to high oil pressure output terminal the 34, four one-way valve 23 point of three tunnel and connects: a road is connected to energy storage pressure table 24 and is connected accumulator 28 with after the first stop valve 25; Fuel tank 1 got back to by two tunnel second stop valves 26, and three tunnels, after high pressure filter 27, are connected in parallel the second normally closed solenoid valve 32 and hand reducing pressure pressure adjustment relief valve 29, after connecting the 3rd stop valve 33, then connects high pressure oil output terminal 34, exports.
The structure of the conventional hydraulic power station function shown in Fig. 1 is: the hydraulic oil in fuel tank 1 is by No. 1 pump group, manual position is placed in through the first hand-operated direction valve 18, connect the first one-way valve 20 and directly provide hydraulic power by high pressure oil output terminal 34 for load, realize conventional hydraulic power station function.
The structure that the hydraulic power station shown in Fig. 1 newly increases function is: when the first hand-operated direction valve 18 or the second hand-operated direction valve 19 are placed in automated location, hydraulic oil is by the first hand-operated direction valve 18 or the second hand-operated direction valve 19, through the second one-way valve 22 or the 4th one-way valve 23, through the first stop valve 25 to (as accumulation of energy high pressure liquid force feed) in accumulator 28, again after high pressure filter 27 (filtration), 2 kinds of operating modes are divided to export: a kind of operating mode is, high pressure liquid force feed is under semi-automatic operating mode, after being connected by semi-automatic operating conditions first normally closed solenoid valve 31 of automatic controller or the second normally closed solenoid valve 32, export high pressure liquid force feed, another kind of operating mode is, high pressure liquid force feed is under full-automatic operating mode, after hand reducing pressure pressure adjustment relief valve 29, manually opened 3rd stop valve 33, export high pressure liquid force feed, these the two kinds different way of outputs provide controlled output hydraulic pressure power for load, are reached for load accumulation of energy and provide the effect of best torque.
The first operating mode, function is identical with conventional hydraulic power station, increases oil pressure CLV ceiling limit value stoppage protection function.
When the first hand-operated direction valve 18 or the second hand-operated direction valve 19 are placed in manual position, the first control switch QT1 or the second control switch QT2 of the first explosion-proof electric control box 14 or the second explosion-proof electric control box 15 are placed in manual operating mode, can take the work of unit pump group.As output oil pressure and discharge capacity can not meet load request, take the work of unit pump group, increase oil pressure and the discharge capacity of hydraulic system, reach the control gear oil pressure upper limit and arrange and termination of pumping (this oil pressure upper limit arranges about lower than the adjusted value of the first relief valve 16 and the second relief valve 17).After output oil pressure drops to the lower limit of setting oil pressure, restart motor.Essence is the protective function increasing system oil pressure, substantially stops relief valve overflow phenomena, increases security of system.
The second operating mode: No. 1 or No. 2 semi-automatic operating modes of pump group, when the first hand-operated direction valve 18 or the second hand-operated direction valve 19 are in automated location, first control switch QT1 or the second control switch QT2 is placed in automatically, 3rd control switch QT3 or the 4th control switch QT4 is placed in semi-automatic, hydraulic oil is through the first hand-operated direction valve 18 or the second hand-operated direction valve 19, after second one-way valve 22 or the 4th one-way valve 23, one road binders stores in accumulator 28, one road binders is after the first normally closed solenoid valve 31 is connected, directly for load provides oil pressure from low to high, until termination of pumping when oil pressure reaches the best torque oil pressure value of setting, reach the operation of a load torque, next time is when need again operate, when during oil pressure termination of pumping, pressure release is to the oil pressure lower limit set, motor is restarted, periodic duty.
The third operating mode, No. 1 or No. 2 full-automatic operating modes of pump group, when the first hand-operated direction valve 18 or the second hand-operated direction valve 19 are in automated location, first control switch QT1 or the second control switch QT2 is placed in automatically, control switch QT3 or QT4 is placed in automatically, hydraulic oil is through the first hand-operated direction valve 18 or the second hand-operated direction valve 19, hydraulic oil is after the second one-way valve 22 or the 4th one-way valve 23, store in accumulator 28, the start and stop of motor are completely by the upper and lower set value calculation in automatically controlling, now the first normally closed solenoid valve 31 power-off is in closed operating mode, the high pressure oil that accumulator 28 stores is through hand reducing pressure pressure adjustment relief valve 29, after manually adjusting, the size of oil pressure is adjustable and stable, by the size of the technical requirements determination oil pressure of load, so the oil pressure after adjustment is exactly the best torque oil pressure of load, this optimum oil pressure energy is continual for a long time provides power for load, multifunction hydraulic power station is made to have the adjustable stable function of output oil pressure size, alleviate operator's working pressure, ensure the load quality of drilling tool.
By the description of above-mentioned three kinds of operating modes, first hand-operated direction valve 18 and the second hand-operated direction valve 19 and the first normally closed solenoid valve 31 and the second normally closed solenoid valve 32, hand reducing pressure pressure adjustment relief valve 29 with the use of, reach semi-automatic, full automatic multi-functionally to switch, the load for different demand provides multiple different hydraulic driving power.
Fig. 2 shows circuit structure and the working principle of the hydraulic power station of the present embodiment:
In Fig. 2, QF1, QF2 and QF3 are air-break switches, KM1 and KM2 is A.C. contactor, FR1 and FR2 is thermorelay, KM3, KM4, KM5 and KM6 are DC relay, QT1, QT2, QT3 and QT4 are control switches, SB1 and SB3 is start button, SB2 and SB4 is stop button, KT1 and KT2 is time delay relay, KA1 and KA2 AC relay, 36 and 37 is digital display control instruments, and 38 is DC electrical source, and FU is protective tube; Wherein M1 and M2 is motor, is the load of automatic controller.Composition; Because the High-Voltage Electrical Appliances part in dotted line frame belongs to high tension apparatus, to people easily produce electric shock and electrical equipment dodge quick-fried
Automatic controller is by the risk of the High-Voltage Electrical Appliances part in dotted line frame in figure and the low-voltage electrical apparatus part outside dotted line frame, so carry out explosiveproof isolation to the High-Voltage Electrical Appliances part in dotted line frame, and low-voltage electrical apparatus part can outside explosiveproof isolation, accomplish high low pressure isolation separately, support personnel and device security.
Automatic controller connects the first explosion-proof electric control box 14 by the first pressure transmitter 12 and is connected the second explosion-proof electric control box 15 with the second pressure transmitter 13 and forms.
First explosion-proof electric control box 14 and the second explosion-proof electric control box 15, be made up of other device in Fig. 2 except input end first pressure transmitter 12 and the first pressure transmitter 13 and load first motor M 1 and the second motor M 2, namely explosion-proof electric control box is made up of main circuit and automatic control circuit: main circuit, and by controlling, the air-break switch of pump group start and stop, A.C. contactor, thermorelay and load motor are in series, automatic control circuit, by the first air-break switch QF1, second air-break switch QF2 and the 3rd air-break switch QF3, first start button SB1 and the 3rd start button SB3, second stop button SB2 and the 4th stop button SB4, first AC relay KA1 and the second AC relay KA2, first DC relay KM3, second DC relay KM4, 3rd DC relay KM5 and the 4th DC relay KM6, first time delay relay KT1 and the second time delay relay KT2, first normally open solenoid valve 10 and the second normally open solenoid valve 11, first normally closed solenoid valve 31 and the second normally closed solenoid valve 32, first digital display control instrument 36 and the second digital display control instrument 37, 24V DC electrical source 38 is formed, in automatic control circuit, the 3rd air-break switch QF3 and 24V DC electrical source 38 are connected in series, first air-break switch QF1, device in second air-break switch QF2 and each control range of the 3rd air-break switch QF3 is in being connected in parallel.
The connection of the first explosion-proof electric control box 14 automatic control circuit: the first automatic control output end of control switch QT1 is directly connected with the 3rd control switch QT3 Automatic Control output terminal, the coil of the first DC relay KM3 is connect with the first digital display control instrument 36, the coil of the 3rd DC relay KM5 is connect with the first digital display control instrument 36, the coil of the first DC relay KM3 and the 3rd DC relay KM5 is in series connection, first AC relay KA1, the coil of the first time delay relay KT1 and the coil of the first A.C. contactor KM1 are parallel relationship, the electromagnetic coil of the first normally open solenoid valve 10 and the coil of the first time delay relay KT1 are in connecting, the electromagnetic coil of the first normally closed solenoid valve 31 and the coil of the first AC relay KA1 are in connecting.
In the start and stop of control No. 1 pump group: contact, the first control switch QT1 of the first the 3rd DC relay KM5 are placed in manually, the coil of the second stop button SB2, the first start button SB1, the first A.C. contactor KM1, the first thermorelay FR1 normally-closed contact be in being connected in series; Contact, the first control switch QT1 of the second the 3rd DC relay KM5 are placed in automatically, the 3rd control switch QT3 is placed in automatically, the coil of the first DC relay KM3, the first A.C. contactor KM1, thermorelay FR1 normally-closed contact be in being connected in series; The coil that contact, the first control switch QT1 of the third the 3rd DC relay KM5 are placed in automatically, the 3rd control switch QT3 is placed in semi-automatic, the first DC relay KM3, the first A.C. contactor KM1, the first thermorelay FR1 normally-closed contact are in being connected in series, and the coil of the first AC relay KA1 and the first DC relay KM3, the first A.C. contactor KM1, thermorelay FR1 normally-closed contact are in being connected in parallel.
(note: the second connection of explosion-proof electric control box 15 in automatic control circuit is identical with the first explosion-proof electric control box 14, does not repeat herein.)
3rd air-break switch QF3 is the low-voltage power supply switch of automatic controller, whole automatic controller need be powered simultaneously and could normally be worked by three-phase electricity, wherein the 3rd air-break switch QF3 control L1 phase line, for 24V DC electrical source provides 220 alternating current input power supplyings, the start and stop of the A.C. contactor KM1 of main circuit are completed by L2 phase L3 phase line, and main circuit controls the start and stop of A.C. contactor, need the 3rd air-break switch QF3 and L1 phase line energising and control in the whole nominal situation of device under just can complete start and stop operating mode, if three-phase electricity input end phase shortage, automatic controller then can not work, so possess input end default-phase protection function.
Automatic controller is arranged between the motor of Fig. 1 and plunger pump export, and by pressure transmitter, explosion-proof electric control box is formed.
The first pressure transmitter 12, first explosion-proof electric control box 14 that the working principle of described automatic controller is enumerated describes.
A kind of situation of automatic control is: the electric pressure signal that the first pressure transmitter 12 connected by the first plunger pump 6 output terminal is responded to, be delivered to the first digital display control instrument 36 input end, the output terminal of the first digital display control instrument 36 exports control signal and controls the first explosion-proof electric control box 14, final control No. 1 pump group automatic start-stop, reaches energy-conservation effect.
Automatic controller must under the 3rd air-break switch QF3 closes situation, and DC electrical source 38 provides 220V Ac by phase line L1, changes 18V low-voltage AC into through isolating transformer, after rectifying and wave-filtering voltage stabilizing, export+24V direct current; DC electrical source 38 is digital display control instrument, pressure transmitter, DC relay, and solenoid valve etc. provide low-voltage direct safety voltage.
Described automatic controller, a kind of situation is: 1 end of the first digital display control instrument 36 obtains+24V, after the grounding end of 2 termination 24V, first digital display control instrument 36 obtains electric normal work, by the various optimum configurations (mainly the optimum configurations of force value) of the first digital display control instrument 36, 8 foots of its digital display control instrument 36 are made to export+24 direct currents, its direct current 24V the 3rd DC relay KM5 coil obtains electric adhesive, main circuit is when the first air-break switch QF1 closes, L3 phase voltage delivers to the inlet side of the first control switch QT1 through the 3rd DC relay KM5 main contact (the 3rd DC relay KM5 coil obtains electric adhesive), 6 foots of the first digital display control instrument 36 export the presence or absence that the electric sensing electrical signal size by the first pressure transmitter 12 of+24V controls it automatically simultaneously, the break-make of the first DC relay KM3 is made to control the break-make of the L3 phase electricity of the first A.C. contactor KM1 coil, the size reaching the hydraulic oil that the first pressure transmitter 12 transmits controls the start and stop of the first A.C. contactor KM1, the i.e. automatic start-stop of automatic control motor (M1) 8 automatically.Finally realize the object that whole system controls automatically, reach energy-conservation effect.
First control switch QT1 has stopping, manual and automatic three kinds of operating modes, and the 3rd control switch QT3 has semi-automatic and full-automatic two kinds of operating modes.
When first control switch QT1 is placed in manual operating mode: electrical principle is identical with conventional hydraulic power station.
When first control switch QT1 is placed in and stops operating mode: whole automatic control system power-off quits work.
When first control switch QT1 is placed in and automatically starts building condition, there are two kinds of operating modes:
A kind of operating mode: the 3rd control switch QT3 is placed in semi-automatic operating mode, and the first AC relay KA1 adhesive, opens the first normally closed solenoid valve 31, high pressure liquid force feed to output terminal through the first normally closed solenoid valve 31, exports high pressure oil and completes---and realize semi-automatic function and control.
Open close (upper limit DC relay disconnects, and lower limit DC relay is connected) that the upper and lower of oil pressure controls to be controlled by the first pressure transmitter and the first digital display control instrument 36 first DC relay KM3 completes.
Another kind of operating mode: when the 3rd control switch QT3 is placed in full-automatic operating mode, the upper and lower of oil pressure controls by the output terminal of SC sigmal control first digital display control instrument 36 of the first pressure transmitter 12, control the open close of the first DC relay KM3 again, reach the open close of control first A.C. contactor KM1, realize the stop and start automatically controlling the first motor M 1, high pressure liquid force feed is after hand reducing pressure pressure adjustment relief valve 29, through stop valve 33 to output terminal, output size is stablized adjustable height force feed and is completed---and realize full-automatic function and control.
The main circuit working principle of described first explosion-proof electric control box 14: main circuit refers to that the first air-break switch QF1, the first A.C. contactor KM1 of the start and stop of control No. 1 pump group, the first thermorelay FR1 and load first motor M 1 are formed; First air-break switch QF1 is the power supply of control No. 1 pump group first motor M 1, and after the first air-break switch QF1 closes a floodgate, automatic control signal controls the start and stop of the first A.C. contactor KM1, directly controls the start and stop of the first motor M 1 through the first thermorelay FR1.
The automatic control circuit working principle of the first explosion-proof electric control box 14 is:
1: one of automatic control circuit operating mode is: the condition that various operating mode normally works, the 3rd air-break switch QF3 closes a floodgate, and provides 24V DC electrical source.At this moment the first pressure transmitter 12 senses that the oil pressure change that No. 1 pump group exports is sent as 4-20mA electrical signal, when oil pressure is in the upper range that the first digital display control instrument 36 first sets, the operating mode of the first digital display control instrument 36 is that 5 pin and 6 pin are connected, 3rd DC relay KM5 coil adhesive, after first air-break switch QF1 closes, first control switch QT1 inlet side obtains electric, tutorial light is bright, represent that the control circuit input voltage of automatic function is normal, first control switch QT1 and the 3rd control switch QT3 could normally work, manually, semi-automatic and full-automatic function could normal work.
2: two of automatic control circuit operating mode is: manual operating mode; first control switch QT1 and the 3rd control switch QT3 switch with the use of; as shown in Figure 2: the first control switch QT1 is under manual operating mode; after the first start button SB1; the adhesive after 5-10 seconds of first time delay relay; 24V direct current closes the first normally open solenoid valve 10 after prolonging the time relay through first, reach empty load of motor start normal after work with pressure (protection motor and plunger pump and system).When manual operating mode, system oil pressure controls the upper termination of pumping in limited time of oil pressure at the first digital display control instrument 36 first, and oil pressure, when dropping to lower limit, could start No. 1 pump group by the first start button SB1, stop button SB2 termination of pumping thereupon.
3: three of automatic control circuit operating mode is: semi-automatic operating mode, first control switch QT1 is placed in automatically and the 3rd control switch QT3 is placed in semi-automatic, first AC relay coil KA1 obtains electric adhesive, 24V direct current opens the first normally closed solenoid valve 31 after the first AC relay KA1 main contact, the high pressure liquid force feed Direct driver load of accumulator, oil pressure is in slow rising, until termination of pumping after reaching the upper limit set value of the second pilot pressure of the first digital display control instrument 36, oil pressure opens pump when dropping to the lower limit set value of the second pilot pressure, realize accumulation of energy semiautomatic control load, reach optimum load.
4: four of automatic control circuit operating mode is: automatic operating, 3rd control switch QT3 is placed in automatically, realize accumulation of energy, motor start and stop realize the first digital display control instrument 36 second control upper and lower and arrange rear automatic operation, accumulator oil pressure reduces pressure after pressure regulation through hand reducing pressure pressure adjustment relief valve 29, the high pressure liquid force feed control optimum load moment of torsion that large discharge is stable, realizes the object of Automatic Control best torque.
The features and application of the first digital display control instrument 36 in this automatic control circuit is as follows:
A: when 1 of the first digital display control instrument 36, 2 rectify really connection+24V direct current, the correct setting of the first digital display control instrument 36 firsts and seconds parameter, under terminal wiring exact connect ion, when the electrical signal that first pressure transmitter 12 is responded to correctly accesses 3 pin and 11 pin of the first digital display control instrument 36, when the oil pressure value of the first electronic pressure transmitter induction is less than the upper limit settings of the first control, 5 pin and 6 pin are connected, + 24V voltage makes direct current 24V the 3rd DC relay KM5 adhesive, 3rd DC relay KM5 main contact obtains electric, whole automatic control circuit is made to obtain L3 phase voltage, first control switch QT1 obtains L3 phase voltage, manually whole, semi-automatic and full-automatic normal work.As oil pressure pressure exceed the upper limit settings that system first controls time, 5 pin and 6 pin disconnect, the 3rd DC relay KM5 disconnection, whole automatic control circuit power-off, the protective function of Here it is maximum pressure setting.
B: when 1 of the first digital display control instrument 36, 2 rectify really connection+24V direct current, the correct setting of the first digital display control instrument 36 firsts and seconds parameter, under terminal wiring exact connect ion, when the electrical signal that first pressure transmitter 12 is responded to correctly accesses 3 pin and 11 pin of the first digital display control instrument 36, the oil pressure value of the first electronic pressure transmitter induction directly works between the second upper and lower settings controlled, realize motor when oil pressure reaches the upper limit settings of the second control to quit work, oil pressure drops to the electric motor starting work when the lower limit settings of the second control, realize the fully automatic working of oil pressure in setting range.
C: whole automatic control and system oil pressure upscale protection function are completed by the first digital display control instrument 36.This digital display control instrument 36 possesses the fundamental function of single-chip microcomputer, the practical application performance of this first digital display control instrument 36 automatic control function through a hundreds of SWP-C40 digital display control instrument in more than ten years is highly stable, simple to operate, oil pressure automatic control function can be realized completely.
This embodiment achieves the function of automatic controller: oil pressure upscale protection, input end open-phase protection, empty load of motor delayed startup, the control of manual, semi-automatic and full-automatic multi-functional and conversion.Have circuit simple, controlling functions is strong, with low cost, and technology maturation, high and low voltage electrical equipment such as to separate at the advantage.Provide low cost by the automatic control circuit of transmitter as control signal, the reference circuit of high stable for other are all kinds of, be applicable to applying.
Obviously, this embodiment of the present invention, is only for example of the present invention is clearly described, and is not the restriction to embodiments of the present invention.For those of ordinary skill in the field, other multi-form change and variations can also be made on the basis of the above description.Here cannot give exhaustive to all mode of executions.Every belong to technological scheme of the present invention the apparent change of amplifying out or variation be still in the row of protection scope of the present invention.
Claims (4)
1. multifunction hydraulic power station, there are fuel tank (1), No. 1 pump group and No. 1 pump group electric control box, No. 1 pump group is placed in fuel tank (1) bottom, this No. 1 pump group is formed by connecting by before and after the first low pressure ball valve (2), the first filter cleaner (4), the first plunger pump (6), the first motor (8), and the first motor (8) is that the first plunger pump (6) provides driving power, when the first air-break switch (QF1) and the 3rd air-break switch (QF3) close a floodgate, the first control switch (QT1) and the first hand-operated direction valve (18) be placed in manual operating mode, by manual hand manipulation for load provides hydraulic power simultaneously,
it is characterized in that: there are No. 2 pump groups, there are the first hand-operated direction valve (18) and the second hand-operated direction valve (19), first one-way valve (20), second one-way valve (22), 3rd one-way valve (21) and the 4th one-way valve (23), accumulator (28), hand reducing pressure pressure adjustment relief valve (29), first normally closed solenoid valve (31) and the second normally closed solenoid valve (32), first normally open solenoid valve (10) and the second normally open solenoid valve (11), first stop valve (25), second stop valve (26) and the 3rd stop valve (33), there is automatic controller,
No. 1 pump group and No. 2 pump groups, be parallel relationship, the two structure is identical;
No. 1 pump group is connected with the first hand-operated direction valve (18), this first hand-operated direction valve (18) is connected with two one-way valves more respectively, wherein the first one-way valve (20) is connected to high pressure oil output terminal (34), second one-way valve (22) point two-way connects, one road connects accumulator (28) after being connected to stop valve (25) again, another road divides again two-way to connect: the first via through the second stop valve (26) to fuel tank (1), second tunnel is after high pressure filter (27), two-way is divided to connect again: the first via is connected after the 3rd stop valve (33) is connected through hand reducing pressure pressure adjustment relief valve (29) with the second tunnel and merged connection after the first normally closed solenoid valve (31) connects, finally export from high pressure oil output terminal (34),
The output terminal of described No. 1 pump group first plunger pump (6), be connected in parallel the first pressure transmitter (12), the pressure signal that this first pressure transmitter (12) is responded to, after being delivered to the input end of the first digital display control instrument (36), by the first digital display control instrument (36) output terminal output control automatically signal, control the start and stop of first A.C. contactor (KM1) of main circuit in the first explosion-proof electric control box (14) again, realize the start and stop automatically controlling No. 1 pump group;
First normally open solenoid valve (10), the first relief valve (16) and No. 1 pump group are connected in parallel between fuel tank (1) and the first hand-operated direction valve (18), realize unloaded delayed startup and the ultrahigh pressure automatic overflow of No. 1 pump group;
No. 2 pump groups are connected with the second hand-operated direction valve (19); this second hand-operated direction valve (19) is connected with two one-way valves more respectively; wherein the 3rd one-way valve (21) is connected to high pressure oil output terminal (34), and the 4th one-way valve (23) point two-way connects: a road connects accumulator (28) after being connected to the first stop valve (25) again; Another road divides again two-way to connect: the first via through the second stop valve (26) to fuel tank (1); second tunnel is after high pressure filter (27); two-way is divided to connect again: the first via is connected after the 3rd stop valve (33) is connected through hand reducing pressure pressure adjustment relief valve (29) with the second tunnel and merged connection after the second normally closed solenoid valve (32) connects, and finally exports from high pressure oil output terminal (34);
The output terminal of described No. 2 pump group second plunger pumps (7), be connected in parallel the second pressure transmitter (13), the pressure signal that this second pressure transmitter (13) is responded to, after being delivered to the input end of the second digital display control instrument (37), by the second digital display control instrument (37) output terminal output control automatically signal, control the start and stop of second A.C. contactor (KM2) of main circuit in the second explosion-proof electric control box (15) again, realize the start and stop automatically controlling No. 2 pump groups;
Second normally open solenoid valve (11), the second relief valve (17) and No. 2 pump groups are connected in parallel between fuel tank (1) and the second hand-operated direction valve (19), realize unloaded delayed startup and the ultrahigh pressure automatic overflow of No. 2 pump groups;
Described automatic controller, between the plunger Pump and Electromotor being arranged on pump group, is made up of pressure transmitter and explosion-proof electric control box; This explosion-proof electric control box, is made up of main circuit and automatic control circuit, and main circuit and automatic control circuit are parallel relationship;
Described main circuit: be connected in series to be connected in series with the second air-break switch (QF2), the second A.C. contactor (KM2) and the second thermorelay (FR2) by the first air-break switch (QF1), the first A.C. contactor (KM1) and the first thermorelay (FR1) and form;
Described automatic control circuit, by the 3rd air-break switch (QF3), first DC relay (KM3), second DC relay (KM4), 3rd DC relay (KM5) and the 4th DC relay (KM6), first control switch (QT1), second control switch (QT2), 3rd control switch (QT3) and the 4th control switch (QT4), first button (SB1), second button (SB2), 3rd button (SB3) and the 4th button (SB4), first AC relay (KM 1) and the second AC relay (KM2), first time delay relay (KT1) and the second time delay relay (KT2), first normally open solenoid valve (10) and the second normally open solenoid valve (11), first normally closed solenoid valve (31) and the second normally closed solenoid valve (32), first digital display control instrument (36) and the second digital display control instrument (37), DC electrical source (38) is formed, the coil of DC relay and digital display control instrument are series relationship, the coil of the contact of DC relay and the control A.C. contactor of main circuit is series relationship, and the coil of the control A.C. contactor of time delay relay, normally open solenoid valve, normally closed solenoid valve and main circuit is parallel relationship.
2. multifunction hydraulic power station according to claim 1, is characterized in that: described accumulator (28), is made up of the accumulator steel cylinder of more than 2, in being connected in parallel, and the capsule of built-in inflated with nitrogen.
3. multifunction hydraulic power station according to claim 1, is characterized in that: the pipeline between the first stop valve (25) and fuel tank (1) is provided with the second stop valve (26).
4. multifunction hydraulic power station according to claim 1, is characterized in that: the pipeline between the first hand-operated direction valve (18) and the first stop valve (25) is provided with the second one-way valve (22); Pipeline between first hand-operated direction valve (18) and high pressure oil output terminal (34) is provided with the first one-way valve (20); Pipeline between second hand-operated direction valve (19) and the first stop valve (25) is provided with the 4th one-way valve (23), and the pipeline between the first hand-operated direction valve (18) and high pressure oil output terminal (34) is provided with the 3rd one-way valve (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420629645.7U CN204344547U (en) | 2014-10-29 | 2014-10-29 | Multifunction hydraulic power station |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420629645.7U CN204344547U (en) | 2014-10-29 | 2014-10-29 | Multifunction hydraulic power station |
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| CN204344547U true CN204344547U (en) | 2015-05-20 |
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| CN201420629645.7U Withdrawn - After Issue CN204344547U (en) | 2014-10-29 | 2014-10-29 | Multifunction hydraulic power station |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104389827A (en) * | 2014-10-29 | 2015-03-04 | 范清云 | Multifunctional hydraulic power station |
| CN110195821A (en) * | 2019-05-09 | 2019-09-03 | 中国飞机强度研究所 | A kind of hydraulic substation and magnetic valve controller |
-
2014
- 2014-10-29 CN CN201420629645.7U patent/CN204344547U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104389827A (en) * | 2014-10-29 | 2015-03-04 | 范清云 | Multifunctional hydraulic power station |
| CN110195821A (en) * | 2019-05-09 | 2019-09-03 | 中国飞机强度研究所 | A kind of hydraulic substation and magnetic valve controller |
| CN110195821B (en) * | 2019-05-09 | 2021-05-07 | 中国飞机强度研究所 | Hydraulic substation and electromagnetic valve control device |
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