CN218493741U - Closed hydraulic drive double-acting efficient hydraulic pressure boosting water injection equipment - Google Patents

Abstract

The utility model belongs to the technical field of oil development equipment, concretely relates to high-efficient hydraulic pressure boost water injection equipment of closed hydraulic drive two effects of water injection well pressure boost, an exit of characterized by closed return circuit variable hydraulic pump is imported and exported and is connected through A work pipeline and one oil inlet and outlet of two effects of pressure boost cylinder, another import and export is connected through B work pipeline and another oil inlet and outlet of two effects of pressure boost cylinder, the inlet and outlet of last pressure boost cylinder and lower pressure boost cylinder at two effects of pressure boost cylinder are provided with drainage check valve and water inlet check valve respectively, be provided with drainage pressure gauge on drainage check valve outlet pipe way, steady voltage energy storage ware and drainage valve, the import of water inlet check valve is provided with water inlet filter, water inlet pressure table and inlet valve, be provided with two solenoid valve on the outlet pipe of pressure boost valve, the relief valve, the forced air cooling radiator, prevent backward flow check valve and return oil filter, the beneficial effects of the utility model are that, the structure is simplified, the switching-over impact has been eliminated, the stability of equipment operation has been improved.

Description

Closed hydraulic drive double-acting efficient hydraulic pressure boosting water injection equipment

Technical Field

The utility model belongs to the technical field of oil development equipment, concretely relates to high-efficient hydraulic pressure boost water injection equipment of closed hydraulic drive two effects of water injection well pressure boost water injection.

Background

In order to ensure that the oil field has continuous and stable yield and improve the final recovery ratio of the oil field, most oil fields adopt a water injection development mode, and the water injection well injects water into an oil layer to supplement energy so as to keep the formation pressure and realize yield increase and stability. Due to the fact that injection allocation of a plurality of water injection wells cannot be completed under the pressure of a water injection system due to the reasons of underground stratum structure, change of oil layer physical properties and crude oil physical properties, oil layer pollution blockage caused in the production process and the like, conventional acidizing and fracturing are adopted for stratum blockage removal, the effective period is short, construction cost is high, pressurized water injection is an effective method for solving the problems, and the oil field is generally augmented injection in a mode of increasing the pressure of a main line or a single well.

At present, supercharging water injection equipment mainly comprises a high-pressure multistage centrifugal pump and a high-pressure triple plunger pump, and has a plurality of problems in production and application, particularly as follows:

high-pressure multistage centrifugal pump: the high-pressure multistage centrifugal pump adopts a motor to drive an impeller shaft and a multistage impeller arranged on the impeller shaft to rotate at a high speed, and utilizes centrifugal force to pressurize and discharge water. The whole operating efficiency of multistage centrifugal pump is very low, and the efficiency of best operating mode point generally can not exceed 60%, and most efficiency is less than 40%, therefore power consumption is big, and the energy waste is very serious, simultaneously because structural constraint, a large amount of leakages easily appear in pump shaft mechanical seal department, causes environmental pollution, and multistage centrifugal pump only adapts to the clear water and increases annotates, increases annotates because of the easy emergence wearing and tearing and corrosion phenomenon of existence of granule nature sediment of oil field sewage, and the life-span shortens greatly, can not normal work even.

High-pressure triple plunger pump: the high-pressure three-plunger pump adopts a motor to drive a gear box or a large belt pulley to rotate at a high speed, and then the gear box or the large belt pulley drives a crankshaft to rotate to push a connecting rod and a plunger to reciprocate to suck and discharge liquid. The high-pressure three-plunger pump is influenced by the strength of a crankshaft, the diameter of a plunger is small, the diameter of the plunger is generally not larger than 70mm, in order to meet certain displacement, the stroke frequency of the plunger is very high and generally reaches 350-400 times/minute, a series of problems are brought to the plunger pump by the high stroke frequency, the vibration is large, the opening and closing collision of a pump valve is frequent, a bearing bush, the plunger and a filler are seriously abraded, the sealing water leakage is large, the faults are many, parts are frequently replaced in maintenance, the maintenance cost is very high, and particularly under the condition that the working pressure is larger than 25MPa, the vibration is severe and even the normal work cannot be realized due to the stress deformation of a machine body and the crankshaft.

High-pressure multistage centrifugal pump and high-pressure three plunger pump are because of the operating speed is high, and the operating noise is very big, and sound is sharp-pointed and harsh, and the operating noise generally exceeds 120 decibels, has seriously influenced daily managers's healthy.

Most of the oilfield injected water is sewage, the high-pressure multistage centrifugal pump and the high-pressure triple-plunger pump are not provided with a matched water leakage collecting and reinjecting system, and the sewage leaked at a sealing part is generally discharged at a nearby well site, so that the environmental pollution is very serious.

Disclosure of Invention

The to-be-solved technical problem of the utility model is to provide a big plunger long stroke low-stroke low noise high efficiency long-life is pollution-free and adopts high-efficient hydraulic drive's two high-efficient hydraulic pressure boost water injection equipment of closed hydraulic drive.

For overcoming the problems existing in the prior art, the utility model solves the problems that the technical proposal is that:

the closed type hydraulic drive double-acting high-efficiency hydraulic pressurizing water injection device comprises a fan, a leather bag placing box, a liquid level adjusting leather bag, a rocker, a pressing plate, an oil tank, an air inlet check valve, an oil tank safety valve I, a power motor, a closed loop variable hydraulic pump assembly, an A working pipeline, a B working pipeline, an A working pipeline pressure gauge, a B working pipeline pressure gauge, a flushing valve, a PLC control system, a double-acting pressurizing cylinder, a drainage check valve I, a drainage check valve II, a water inlet check valve I, a water inlet check valve II, a pressure stabilizing energy accumulator, a drainage valve, a bypass valve, a water inlet filter, a drainage pressure gauge, a water inlet pressure gauge, a water leakage collecting box, a lubricating system, a two-position two-way electromagnetic valve, a water leakage discharging system, a safety valve II, a safety valve III, an air cooling radiator I, an air cooling radiator II, an independent heat dissipation oil pump motor set, a backflow prevention check valve and a filter. The closed loop variable hydraulic pump assembly comprises a closed loop variable hydraulic pump, a control valve, an oil supplementing pump, a filter, an oil supplementing overflow valve, an oil supplementing working pressure gauge, a pressure cut-off valve, a first overpressure overflow valve, a second overpressure overflow valve, a first oil supplementing check valve and a second oil supplementing check valve. The flushing valve comprises a hydraulic control valve and a pressure maintaining valve. An inlet and an outlet of the closed loop variable hydraulic pump are connected with an oil inlet and an oil outlet of the double-acting pressurizing cylinder through the working pipeline A, and the other inlet and the outlet of the closed loop variable hydraulic pump are connected with the oil inlet and the oil outlet of the double-acting pressurizing cylinder through the working pipeline B. The water inlet and outlet I of the upper pressurizing cylinder barrel of the double-acting pressurizing cylinder is provided with a first drainage one-way valve and a first water inlet one-way valve, the water inlet and outlet II of the lower pressurizing cylinder barrel of the double-acting pressurizing cylinder is provided with a second drainage one-way valve and a second water inlet one-way valve, inlets of the first water inlet one-way valve and the second water inlet one-way valve are communicated through a third pipeline, the first drainage one-way valve and the second drainage one-way valve are communicated through a second pipeline, a drainage pressure gauge, a pressure-stabilizing energy accumulator and a drainage valve are arranged on the first drainage one-way valve and the second drainage one-way valve, and an outlet of the drainage valve is communicated with a water injection well. And the inlets of the water inlet one-way valve I and the water inlet one-way valve II are provided with a water inlet filter, a water inlet pressure gauge and a water inlet valve, the inlet of the water inlet valve is communicated with a water inlet pipeline, and a bypass valve is arranged between the inlets of the water inlet valve and the water discharge valve. And a two-position two-way electromagnetic valve, a safety valve II, an air-cooled radiator I, an anti-backflow one-way valve and an oil return filter are arranged on an outlet pipeline nine of the pressure stabilizing valve. The outlet of the oil pump of the independent heat dissipation oil pump motor set is provided with a second air-cooled radiator and a third safety valve, the inlet of the second air-cooled radiator is connected with the inlet of the third safety valve through a tenth pipeline, the outlet of the second air-cooled radiator is communicated with the inlet of the oil return filter, and the outlet of the third safety valve is communicated with the oil tank. The leather bag placing box is internally provided with a fan and a liquid level adjusting leather bag, the outlet of the fan is provided with a one-way valve, the outlet of the one-way valve is communicated with the liquid level adjusting leather bag, and the liquid level adjusting leather bag is communicated with an oil tank through a first pipeline. The side and the inside of the leather bag placing box are respectively provided with a rocker and a pressing plate. And a first oil tank safety valve is arranged on the oil tank. And a first liquid level sensor is arranged on the water leakage collecting box.

The double-acting booster cylinder comprises a first displacement sensor, an upper booster cylinder barrel, an upper plunger sealing body, an upper connecting cylinder barrel, a power hydraulic cylinder barrel, a lower connecting cylinder barrel, a lower plunger sealing body, a lower booster cylinder barrel and a first piston plunger assembly. Be provided with displacement sensor one at last pressure boost cylinder up end, displacement sensor one is provided with inlet outlet one through the interior jogged joint of the up end of screw thread with last pressure boost cylinder on the upper end excircle, is provided with the plunger seal in last pressure boost cylinder lower extreme hole, is provided with seal groove one, right groove two, the water catch bowl of leaking and lubricating oil sump oil groove two in the plunger seal hole. And a first water leakage port and a first lubricating oil inlet and outlet port are arranged on a flange seventh of the upper pressurizing cylinder barrel, the first water leakage port is communicated with the second water leakage collecting tank, and the first lubricating oil inlet and outlet port is communicated with the second lubricating oil collecting tank. A water inlet and outlet II is arranged on the excircle at the lower end of the lower pressurizing cylinder barrel, a lower plunger sealing body is arranged in an inner hole at the upper end of the lower pressurizing cylinder barrel, a sealing groove V, a righting groove V, a water leakage collecting groove I and a lubricating oil collecting groove I are arranged in the inner hole of the lower plunger sealing body, a water leakage outlet II and a lubricating oil inlet and outlet II are arranged on a flange eight of the lower pressurizing cylinder barrel, the water leakage outlet II is communicated with the water leakage collecting groove I, and the lubricating oil inlet and outlet II is communicated with the lubricating oil collecting groove I; the first water leakage port and the second water leakage port are communicated with the water leakage collecting box through a fifth pipeline. A leakage opening II is formed in the lower portion of the outer circle of the upper connecting cylinder barrel, and a sealing groove II and a centering groove III are formed in an inner hole of the lower end of the upper connecting cylinder barrel. A first leakage opening is formed in the lower portion of the outer circle of the lower connecting cylinder barrel, and a fourth sealing groove and a fourth righting groove are formed in an inner hole in the upper end of the lower connecting cylinder barrel. The outer circle of the first piston is provided with a third sealing groove and a first righting groove, the upper end of the first piston is provided with an upper plunger, the lower end of the first piston is provided with a lower plunger, and the first piston, the upper plunger and the lower plunger form a whole. A first magnetic ring is arranged in an inner hole in the upper end face of the upper plunger, and a first counter bore is formed in the center of the first magnetic ring. The upper pressurizing cylinder barrel and the upper connecting cylinder barrel are connected together in a centering mode through a flange seven and a flange six, the upper connecting cylinder barrel and the power hydraulic cylinder barrel are connected together in a centering mode through a flange five and a flange four, the power hydraulic cylinder barrel and the lower connecting cylinder barrel are connected together in a centering mode through a flange three and a flange two, and the lower connecting cylinder barrel and the lower pressurizing cylinder barrel are connected together in a centering mode through a flange one and a flange eight.

The lubricating system comprises a lubricating oil pump motor set, a liquid level sensor II and a lubricating oil tank. An oil pump outlet of the lubricating oil pump motor set is communicated with a lubricating oil inlet and outlet port II on a lower pressurizing cylinder barrel of the double-acting pressurizing cylinder, a pipeline IV, a lubricating oil inlet and outlet port I on an upper pressurizing cylinder barrel, a pipeline VII, a lubricating oil inlet and outlet port IV on a right pressurizing cylinder barrel of the drainage pressurizing cylinder assembly, a pipeline eleven, a lubricating oil inlet and outlet port III on a left pressurizing cylinder barrel of the drainage pressurizing cylinder assembly and a lubricating oil tank in sequence. And an outlet of the two-position two-way electromagnetic valve is communicated with the lubricating oil tank through a sixth pipeline.

The water leakage discharge system comprises a water leakage discharge power hydraulic station, an electromagnetic directional valve, a water discharge pressure cylinder assembly, a liquid inlet one-way valve I, a liquid inlet one-way valve II, a liquid discharge one-way valve I and a liquid discharge one-way valve II. The water leakage discharge power hydraulic station comprises an oil pump motor set, an oil absorption filter, a pressure sensor and an overflow valve. The outlets of the first liquid drainage check valve and the second liquid drainage check valve are communicated with a water inlet pipeline through a pipeline thirteen. Inlets of the first liquid inlet check valve and the second liquid inlet check valve are communicated with the water leakage collecting box through a fourteen pipeline. The port P of the electromagnetic directional valve is communicated with an oil pump outlet of an oil pump motor set through a pipeline eight, the port T is communicated with an oil tank, the port A is communicated with an oil inlet and outlet port IV on a left flange fourteen of a right connecting cylinder barrel of the drainage pressure cylinder assembly, and the port B is communicated with an oil inlet and outlet port III on a right flange eleven of the left connecting cylinder barrel of the drainage pressure cylinder assembly.

The drainage pressurizing cylinder assembly comprises a displacement sensor II, a left pressurizing cylinder barrel, a left plunger sealing body, a left connecting cylinder barrel, a hydraulic cylinder barrel, a right connecting cylinder barrel, a right plunger sealing body, a right pressurizing cylinder barrel and a piston plunger assembly II. A second displacement sensor is arranged on the left end face of the left pressurizing cylinder barrel, the second displacement sensor is connected with an inner hole of the left end face of the left pressurizing cylinder barrel through threads, a fourth water inlet and outlet is arranged on the outer circle of the left end, a left plunger sealing body is arranged in an inner hole of the right end of the left pressurizing cylinder barrel, a sixth sealing groove, a sixth righting groove, a fourth water leakage collecting groove and a fourth lubricating oil collecting groove are arranged in the inner hole of the left plunger sealing body, a fourth water leakage outlet and a third lubricating oil inlet and outlet are arranged on a flange nine of the left pressurizing cylinder barrel, the fourth water leakage outlet is communicated with the fourth water leakage collecting groove, and the third lubricating oil inlet and outlet is communicated with the fourth lubricating oil collecting groove; a third water inlet and outlet is formed in the outer circle of the right end of the right pressurizing cylinder barrel, a right plunger sealing body is arranged in the inner hole of the left end of the right pressurizing cylinder barrel, an eighth sealing groove, a seventh righting groove, a third water leakage collecting groove and a third lubricating oil collecting groove are formed in the inner hole of the right plunger sealing body, a third water leakage outlet and a fourth lubricating oil inlet and outlet are formed in a sixteen flange of the right pressurizing cylinder barrel, the third water leakage outlet is communicated with the three phases of the water leakage collecting groove, and the fourth lubricating oil inlet and outlet is communicated with the three phases of the lubricating oil collecting groove; the third water leakage port and the fourth water leakage port are communicated with the water leakage collecting box through a twelve pipeline. The lower part of the excircle of the left connecting cylinder barrel is provided with a leakage port IV, and a sealing groove ten and a righting groove ten are arranged in an inner hole at the right end. A leakage opening III is formed in the lower portion of the outer circle of the right connecting cylinder barrel, and a sealing groove nine and a righting groove eight are formed in an inner hole of the left end. The two outer circles of the piston are provided with a sealing groove seven and a righting groove nine, the left end of the piston is provided with a left plunger, the right end of the piston is provided with a right plunger, and the second piston, the left plunger and the right plunger form a whole. A magnetic ring II is arranged in an inner hole of the left end face of the left plunger, a counter bore II is arranged in the center, and the left pressurizing cylinder barrel and the left connecting cylinder barrel are connected together in a centering mode through a flange nine and a flange ten. The left connecting cylinder and the hydraulic cylinder are connected together in a centering way through a flange eleven and a flange twelve. The hydraulic cylinder barrel and the right connecting cylinder barrel are connected together in a centering way through a thirteen flange and a fourteen flange. The right connecting cylinder and the right pressurizing cylinder are connected together in a centering way through a flange fifteen and a flange sixteen.

The double-acting pressure cylinder is driven by a closed loop variable hydraulic pump assembly, and a flushing valve is arranged between the working pipeline A and the working pipeline B.

One or more double-acting pressure cylinders may be connected in parallel.

The double-acting pressure cylinder can be placed vertically or horizontally.

Is provided with a water leakage collecting box and a water leakage discharge system.

The oil tank adopts a closed oil tank, the height of the liquid level in the oil tank is adjusted through the contraction and expansion of the volume of the liquid level adjusting leather bag, and the volume of the liquid level adjusting leather bag is set by a fan, a rocker and a pressing plate.

Compared with the prior art, the beneficial effects of the utility model are that: the closed loop variable hydraulic pump assembly is adopted for driving, the energy of water is fully utilized, the piston plunger assembly in the double-acting pressurizing cylinder is pushed to reciprocate up and down to suck and discharge the liquid for pressurizing, the transmission efficiency is greatly improved, the energy consumption is reduced, the movement speed of the piston plunger assembly in the double-acting pressurizing cylinder is reduced through a large plunger long stroke and low stroke frequency under the condition of meeting a certain displacement, the service lives of the piston plunger assembly, the liquid inlet and discharge one-way valve and a sealing element are prolonged, the overhaul period of equipment is prolonged, the labor intensity of maintenance personnel is reduced, the continuous use working time and the whole service life of the equipment are prolonged, the closed loop variable hydraulic pump assembly is adopted for driving, the hydraulic impact in the reversing process is thoroughly eliminated, and the vibration, the impact and the noise of the equipment in the operation process are effectively reduced. Compared with a supercharging multistage centrifugal pump, the energy-saving pump can save energy by 30-40%, compared with a supercharging plunger pump, the energy-saving pump can save energy by 15-20%, compared with the supercharging multistage centrifugal pump, the maintenance period can be improved by 3-5 times, compared with a supercharging three-plunger pump, the maintenance period can be improved by 5-10 times, compared with the supercharging plunger pump and the supercharging multistage centrifugal pump, the noise can be reduced by 1/3, a water leakage collecting box and a water leakage discharging system are arranged, leaked sewage can be pumped into an incoming water pipeline, the pollution of the leaked water to the environment is thoroughly avoided, and the high efficiency, the energy conservation, the green and the environmental protection are realized.

Drawings

FIG. 1 is a schematic diagram of the present invention;

FIG. 2 is a block diagram of a double-acting pressurized cylinder;

fig. 3 is a schematic diagram of a water leakage discharge system and a structure diagram of a water drainage pressure cylinder assembly.

In the figure, 1-a fan, 2-a leather bag placing box, 3-a liquid level adjusting leather bag, 4-a rocker, 5-a pressure plate, 6-an oil tank, 7-an air inlet check valve, 8-a pipeline I, 9-an oil tank safety valve I, 10-a power motor, 11-a closed loop variable hydraulic pump assembly, 12-a closed loop variable hydraulic pump, 13-a control valve, 14-an oil supplementing pump, 15-a filter, 16-an oil supplementing overflow valve, 17-an oil supplementing working pressure gauge, 18-a pressure cut-off valve, 19-a working pipeline, 20-an overpressure overflow valve I, 21-an overpressure overflow valve II, 22-an oil supplementing check valve I, 23-an oil supplementing check valve II, 24-a working pipeline pressure gauge, 25-a hydraulic control valve and 26-a pressure stabilizing valve, 27-a flush valve, 28-a PLC control system, 29-B working pipeline pressure gauge, 30-a pressure sensor, 31-an overflow valve, 32-an oil absorption filter, 33-an oil pump motor set, 34-a water leakage discharge power hydraulic station, 35-an oil inlet/outlet port I, 36-an oil inlet/outlet port II, 37-a lubricating oil inlet/outlet port I, 38-a water leakage port I, 39-a double-acting pressure cylinder, 40-a water inlet/outlet port I, 41-a water discharge one-way valve I, 42-a water inlet one-way valve I, 43-a water discharge pressure gauge, 44-a pipeline II, 45-a pipeline III, 46-a pipeline IV, 47-a pressure stabilizing accumulator, 48-a water discharge valve, 49-a water injection well, 50-a water inlet pressure gauge, 51-a bypass valve, 52-a water inlet pipeline, 53-water inlet valve, 54-water inlet filter, 55-water inlet one-way valve two, 56-water discharge one-way valve two, 57-water inlet and outlet two, 58-lubricating oil inlet and outlet two, 59-water leakage two, 60-pipeline five, 61-water leakage collection box, 62-lubricating system, 63-lubricating oil tank, 64-liquid level sensor one, 65-lubricating oil pump motor set, 66-liquid level sensor two, 67-pipeline six, 68-pipeline seven, 69-pipeline eight, 70-two-position two-way electromagnetic valve, 71-water leakage discharge system, 72-B working pipeline, 73-pipeline nine, 74-safety valve two, 75-air cooling radiator one, 76-independent heat dissipation oil pump motor set, 77-backflow prevention one-way valve, 78-pipeline ten, 79-safety valve three, 80-air cooling radiator two, 81-filter, 82-lower pressurizing cylinder, 83-water leakage collection tank one, 84-lubricating oil collection tank one, 85-flange one, 86-lower plunger oil, 87-water inlet one, 88-lower sealing body, 90-two, 90-cylinder, 90-upper cylinder, 96-upper plunger displacement sensor, 99-hydraulic pressure collection tank, 99-two, 99-piston displacement sensor, 99-upper plunger displacement sensor, 99-hydraulic cylinder, 80-oil collection tank, 80-oil pump motor set, 99-return tank, 80-return oil pump motor set, and hydraulic pressure collection tank 100-hydraulic pressure collection tank, 105-a magnetic ring I, 106-an upper plunger, 107-a sealing groove I, 108-a flange seven, 109-a centering groove II, 110-a centering groove III, 111-a sealing groove II, 112-a sealing groove III, 113-a piston plunger assembly I, 114-a sealing groove IV, 115-a centering groove IV, 116-a lower plunger, 117-a centering groove V, 118-a flange eight, 119-a sealing groove V, 120-a displacement sensor II, 121-a magnetic ring II, 122-a left plunger, 123-a sealing groove six, 124-a flange nine, 125-a lubricating oil inlet/outlet three, 126-a flange ten, 127-a centering groove six, 128-an inlet/outlet three, 129-a flange eleven, 130-a flange twelve, 131-a sealing groove seven, 132-a piston plunger assembly II, 133-a flange thirteen, 134-fourteen flanges, 135-four oil inlet and outlet ports, 136-right plunger, 137-righting groove seven, 138-fifteen flanges, 139-four lubricating oil inlet and outlet ports, 140-sixteen flanges, 141-eight sealing grooves, 142-right pressurizing cylinder barrel, 143-three water inlet and outlet ports, 144-drainage pressurizing cylinder assembly, 145-three water leakage port, 146-three water leakage water collecting groove, 147-three lubricating oil collecting groove, 148-right plunger sealing body, 149-right connecting cylinder barrel, 150-three leakage port, 151-eight righting groove, 152-nine sealing groove, 153-hydraulic cylinder barrel, 154-righting groove nine, 155-piston two, 156-ten sealing groove, 157-righting groove ten, 158-four leakage port, 159-left connecting cylinder barrel, 160-left plunger sealing body, 161-lubricating oil collecting tank four, 162-water leakage collecting tank four, 163-water leakage port four, 164-counter bore two, 165-water inlet/outlet port four, 166-left pressurizing cylinder barrel, 167-liquid discharge check valve one, 168-liquid inlet check valve one, 169-pipeline eleven, 170-pipeline twelve, 171-liquid discharge check valve two, 172-liquid inlet check valve two, 173-pipeline thirteen, 174-pipeline fourteen and 175-electromagnetic reversing valve.

Detailed Description

The following detailed description of the preferred embodiments of the present invention will be made with reference to the accompanying drawings.

As shown in figure 1, the closed type hydraulic drive double-acting efficient hydraulic pressurizing water injection device comprises a fan (1), a leather bag placing box (2), a liquid level adjusting leather bag (3), a rocker (4), a pressing plate (5), an oil tank (6), an air inlet one-way valve (7), an oil tank safety valve I (9), a power motor (10), a closed loop variable hydraulic pump assembly (11), an A working pipeline (19), a B working pipeline (72), an A working pipeline pressure gauge (24), a B working pipeline pressure gauge (29), a flushing valve (27), a PLC control system (28), a double-acting pressurizing cylinder (39), a drainage one-way valve I (41), a drainage one-way valve II (56), a water inlet one-way valve I (42), a water inlet one-way valve II (55), a pressure stabilizing energy accumulator (47), a drainage valve (48), a bypass valve (51), a water inlet valve (53), a water inlet filter (54), a drainage pressure gauge (43), a water inlet pressure gauge (50), a water leakage collection box (61), a lubricating system (62), a two-way electromagnetic valve (70), a two-way electromagnetic valve (71), a water leakage discharge system (74), a three-independent hydraulic motor (74), a first heat radiator (79), a first air radiator (air radiator), a second radiator (80), a second radiator), a cold radiator (80), a cold radiator (air radiator), a cold radiator, A backflow prevention check valve (77) and an oil return filter (81).

As shown in fig. 1, the closed-loop variable displacement hydraulic pump assembly (11) comprises a closed-loop variable displacement hydraulic pump (12), a control valve (13), an oil supplementing pump (14), a filter (15), an oil supplementing overflow valve (16), an oil supplementing working pressure gauge (17), a pressure cut-off valve (18), a first overpressure overflow valve (20), a second overpressure overflow valve (21), a first oil supplementing check valve (22) and a second oil supplementing check valve (23).

As shown in fig. 1, the flush valve (27) includes a pilot operated valve (25) and a pressure maintaining valve (26).

As shown in fig. 1 and fig. 2, one inlet and outlet of the closed loop variable hydraulic pump (12) is connected with a second oil inlet and outlet (36) of the double-acting pressurizing cylinder (39) through a working pipeline A (19), and the other inlet and outlet is connected with a first oil inlet and outlet (35) of the double-acting pressurizing cylinder (39) through a working pipeline B (72); a first water inlet and outlet (40) of an upper pressurizing cylinder barrel (103) of the double-acting pressurizing cylinder (39) is provided with a first water discharge check valve (41) and a first water inlet check valve (42), a second water inlet and outlet (57) of a lower pressurizing cylinder barrel (82) of the double-acting pressurizing cylinder (39) is provided with a second water discharge check valve (56) and a second water inlet check valve (55), inlets of the first water inlet check valve (42) and the second water inlet check valve (55) are communicated through a third pipeline (45), the first water discharge check valve (41) and the second water discharge check valve (56) are communicated through a second pipeline (44), a second water discharge pressure gauge (43), a pressure stabilizing energy accumulator (47) and a second water discharge valve (48) are arranged on the second outlet pipeline (44) of the first water discharge check valve (41) and the second water discharge check valve (56), and an outlet of the second water discharge valve (48) is communicated with a water injection well (49); the inlets of the water inlet one-way valve I (42) and the water inlet two-way valve II (55) are provided with a water inlet filter (54), a water inlet pressure gauge (50) and a water inlet valve (53), the inlet of the water inlet valve (53) is communicated with a water inlet pipeline (52), and a bypass valve (51) is arranged between the inlet of the water inlet valve (53) and the inlet of the water drain valve (48).

As shown in fig. 1, a two-position two-way solenoid valve (70), a safety valve two (74), an air-cooled radiator one (75), a backflow-preventing one-way valve (77) and an oil return filter (81) are arranged on an outlet pipeline nine (73) of the pressure maintaining valve (26).

As shown in figure 1, an air-cooled radiator II (80) and a safety valve III (79) are arranged at the outlet of an oil pump of an independent heat-radiating oil pump motor set (76), the inlet of the air-cooled radiator II (80) is connected with the inlet of the safety valve III (79) through a pipeline ten (78), the outlet of the air-cooled radiator II (80) is communicated with the inlet of an oil return filter (81), and the outlet of the safety valve III (79) is communicated with an oil tank (6).

As shown in figure 1, a fan (1) and a liquid level adjusting leather bag (3) are arranged in a leather bag placing box (2), a one-way valve (7) is arranged at the outlet of the fan (1), the outlet of the one-way valve (7) is communicated with the liquid level adjusting leather bag (3), and the liquid level adjusting leather bag (3) is communicated with an oil tank (6) through a first pipeline (8).

As shown in figure 1, a rocker (4) and a pressure plate (5) are respectively arranged on the side surface and the inner part of a leather bag placing box (2) and used for adjusting the volume of a liquid level adjusting leather bag (3), and a first oil tank safety valve (9) is arranged on an oil tank (6).

As shown in figure 1, a first liquid level sensor (64) is arranged on the leaked water collecting box (61).

As shown in fig. 1, a hydraulic component of a closed hydraulic drive double-acting high-efficiency hydraulic pressurizing water injection device is specifically disclosed in the following embodiments: the leather bag placing box (2) adopts a box body with the length of 550mmX, the width of 1100mmX and the height of 1200 mm; the oil tank (6) adopts a tank body with the length of 1250mmX, the width of 1100mmX and the height of 1200 mm; the power motor (10) adopts an explosion-proof 6-pole motor with the power of 15kw and the rated rotating speed of 975 revolutions per minute; the closed loop variable hydraulic pump assembly (11) adopts a closed variable hydraulic pump with the specification model number of A4VG56EP 4D; the flushing valve (27) adopts a flushing valve with the specification model number of A2FM 56; the water inlet pressure gauge (50) and the water discharge pressure gauge (43) adopt digital display pressure transmitters with the specification model of HSTL-800 and the measuring range of 0-40 MPa; the water inlet one-way valve I (42), the water inlet one-way valve II (55), the drainage one-way valve I (41) and the drainage one-way valve II (56) adopt sealing units with the valve ball diameter of 50mm and the valve seat outer diameter of 65mmX, inner diameter of 40mmX and height of 20 mm; the pressure-stabilizing energy accumulator (47) adopts a bag type energy accumulator with the specification model number of NXQ-40/31.5-F and the outer diameter of D299; the two-position two-way electromagnetic valve (70) adopts a normally closed two-position two-way electromagnetic valve with the specification model of LSV2-08-2 NCS; the second safety valve (74) and the third safety valve (79) adopt a tubular one-way valve with the specification model of S25A22B, a certain back pressure is set to be used as the safety valves, and the first air-cooled radiator (75) and the second air-cooled radiator (80) adopt the specification model of DXT-5; the motor of the independent heat dissipation oil pump motor set (76) adopts an explosion-proof 6-pole motor with the power of 1.5kw and the rated rotating speed of 975 revolutions per minute, and the oil pump adopts a gear pump with the specification model of CBKEC-F44-AF phi R; the oil return filter (81) adopts a WY series magnetic oil return filter with the specification model of WY-A500 multiplied by 10Q 2Y; the anti-backflow check valve (77) adopts a tubular check valve with the specification model number of S25A 22B; the fan (1) adopts a fan with the specification and model number of HG-250-B; the liquid level adjusting leather bag (3) adopts a leather bag with the specification model of 40L-740-299-NBR and the capacity of 40L; the first liquid level sensor (64) adopts a liquid level sensor with specification model number of EA-M0300-NA-DW 02-A01.

As shown in fig. 1 and 2, the double-acting pressure cylinder (39) comprises a first displacement sensor (104), an upper pressure cylinder (103), an upper plunger sealing body (98), an upper connecting cylinder (97), a power hydraulic cylinder (91), a lower connecting cylinder (88), a lower plunger sealing body (86), a lower pressure cylinder (82) and a first piston plunger assembly (113).

As shown in fig. 1 and 2, a first displacement sensor (104) is arranged on the upper end face of an upper pressurizing cylinder barrel (103), the first displacement sensor (104) is connected with an inner hole of the upper end face of the upper pressurizing cylinder barrel (103) through threads, a first water inlet and outlet (40) is arranged on the excircle of the upper end, an upper plunger sealing body (98) is arranged in an inner hole at the lower end of the upper pressurizing cylinder barrel (103), and a first sealing groove (107), a second righting groove (109), a second water leakage collecting groove (101) and a second lubricating oil collecting groove (100) are arranged in the inner hole of the upper plunger sealing body (98); a first water leakage port (38) and a first lubricating oil inlet/outlet port (37) are arranged on a seventh flange (108) of the upper pressurizing cylinder barrel (103), the first water leakage port (38) is communicated with a second water leakage collecting tank (101), and the first lubricating oil inlet/outlet port (37) is communicated with a second lubricating oil collecting tank (100).

As shown in fig. 1 and 2, a water inlet and outlet II (57) is arranged on the excircle of the lower end of the lower pressurizing cylinder barrel (82), a lower plunger sealing body (86) is arranged in an inner hole of the upper end, a sealing groove fifth (119), a righting groove fifth (117), a water leakage collecting tank I (83) and a lubricating oil collecting tank I (84) are arranged in an inner hole of the lower plunger sealing body (86), a water leakage outlet II (59) and a lubricating oil inlet and outlet II (58) are arranged on a flange eighth (118) of the lower pressurizing cylinder barrel (82), the water leakage outlet II (59) is communicated with the water leakage collecting tank I (83), and the lubricating oil inlet and outlet II (58) is communicated with the lubricating oil collecting tank I (84); the first water leakage port (38) and the second water leakage port (59) are communicated with a water leakage collecting box (61) through a pipeline five (60).

As shown in fig. 2, a second leakage port (96) is arranged at the lower part of the outer circle of the upper connecting cylinder barrel (97), and a second sealing groove (111) and a third righting groove (110) are arranged in the inner hole at the lower end.

As shown in FIG. 2, a first leakage opening (87) is arranged at the lower part of the excircle of the lower connecting cylinder barrel (88), and a fourth sealing groove (114) and a fourth righting groove (115) are arranged in the inner hole at the upper end.

As shown in fig. 2, a third sealing groove (112) and a first righting groove (92) are arranged on the excircle of the first piston (93), an upper plunger (106) is arranged at the upper end, a lower plunger (116) is arranged at the lower end, and the first piston (93), the upper plunger (106) and the lower plunger (116) form a whole; a first magnetic ring (105) is arranged in an inner hole of the upper end face of the upper plunger (106), and a first counter bore (102) is arranged in the center.

As shown in figure 2, an upper pressurizing cylinder barrel (103) and an upper connecting cylinder barrel (97) are connected together in a centering way through a flange seven (108) and a flange six (99), the upper connecting cylinder barrel (97) and a power hydraulic cylinder barrel (91) are connected together in a centering way through a flange five (95) and a flange four (94), the power hydraulic cylinder barrel (91) and a lower connecting cylinder barrel (88) are connected together in a centering way through a flange three (90) and a flange two (89), and the lower connecting cylinder barrel (88) and a lower pressurizing cylinder barrel (82) are connected together in a centering way through a flange one (85) and a flange eight (118).

As shown in fig. 2, the piston (93) is slidably fitted in the bore of the power hydraulic cylinder (91), the upper plunger (106) is slidably fitted in the bores of the upper connecting cylinder (97) and the upper plunger seal body (98), and the lower plunger (116) is slidably fitted in the bores of the lower connecting cylinder (88) and the lower plunger seal body (86).

Referring to fig. 1 and 2, a particular embodiment of a double-acting pressure cylinder (39):

the upper pressurizing cylinder barrel (103) and the lower pressurizing cylinder barrel (82) adopt hydraulic cylinder barrels with the inner diameter of 260mm, the outer diameter of 320mm and the length of 520mm.

The upper connecting cylinder barrel (97) and the lower connecting cylinder barrel (88) adopt hydraulic cylinder barrels with the inner diameter of 290mm, the outer diameter of 335mm and the length of 380 mm.

The power hydraulic cylinder (91) is a hydraulic cylinder with the inner diameter of 300mm, the outer diameter of 345mm and the length of 560 mm.

The first piston plunger assembly (113) adopts a hollow plunger with the outer diameter of 299mm and the thickness of 120mm, and the upper plunger (106) and the lower plunger (116) adopt the hollow plunger with the inner diameter of 210mm, the outer diameter of 250mm and the length of 840 mm.

As shown in fig. 1, the lubrication system (62) includes a lubricant pump motor set (65), a second liquid level sensor (66) and a lubricant tank (63).

Referring to fig. 1, one embodiment of a lubrication system (62): an oil pump motor set of the lubricating system (62) adopts a rotor oil pump motor set with the specification model number of ZCB-1.2 and the power of 120 w; the second liquid level sensor (66) adopts a liquid level sensor with the specification model of EA-M0300-NA-DW 02-A01.

As shown in fig. 1, 2 and 3, an oil pump outlet of the lubricating oil pump motor group (65) is sequentially communicated with a lubricating oil inlet/outlet port two (58) on a lower pressurizing cylinder barrel (82) of the double-acting pressurizing cylinder (39), a pipeline four (46), a lubricating oil inlet/outlet port one (37) on an upper pressurizing cylinder barrel (103), a pipeline seven (68), a lubricating oil inlet/outlet port four (139) on a right pressurizing cylinder barrel (142) of the drainage pressurizing cylinder assembly (144), a pipeline eleven (169), a lubricating oil inlet/outlet port three (125) on a left pressurizing cylinder barrel (166) of the drainage pressurizing cylinder assembly (144) and a lubricating oil tank (63).

As shown in figure 1, an outlet of the two-position two-way electromagnetic valve (70) is communicated with the lubricating oil tank (63) through a pipeline six (67).

As shown in fig. 1, when the lubricating oil liquid level in the lubricating oil tank (63) is lower than the set liquid level of the PLC, the liquid level sensor II (66) sends a signal to control the two-position two-way electromagnetic valve (70) to be powered on and opened, lubricating oil is supplemented into the lubricating oil tank (63) from the oil tank (6), when the lubricating oil liquid level in the lubricating oil tank (63) is higher than the set liquid level of the PLC, the liquid level sensor II (66) sends a signal to control the two-position two-way electromagnetic valve (70) to be powered off and closed, and lubricating oil is stopped being supplemented into the lubricating oil tank (63) from the oil tank (6).

Referring to fig. 1 and 3, the leakage water discharge system (71) comprises a leakage water discharge power hydraulic station (34), an electromagnetic directional valve (175), a discharge pressure cylinder assembly (144), a first liquid inlet check valve (168), a second liquid inlet check valve (172), a first liquid discharge check valve (167) and a second liquid discharge check valve (171).

As shown in figure 1, the leakage water discharge power hydraulic station (34) comprises an oil pump motor set (33), an oil suction filter (32), a pressure sensor (30) and an overflow valve (31).

Referring to fig. 1, a specific embodiment of a power hydraulic station (34) for discharging leaked water: the motor adopts an explosion-proof 6-pole motor with the power of 1.5kw and the rated rotating speed of 975 revolutions per minute; the oil pump adopts a Roots gear pump with the specification model number of 01ZAG16C 442D; the oil absorption filter (32) adopts an oil absorption filter with the specification model of WU-63 multiplied by 80-J; the pressure sensor (30) adopts a digital display pressure transmitter with the specification model of HSTL-800 and the measuring range of 0-40 MPa; the overflow valve (31) adopts an inserted direct-acting overflow valve with the specification model number of DBDS6K 10B/315.

As shown in the figures 1 and 3, the outlets of the first liquid discharge check valve (167) and the second liquid discharge check valve (171) are communicated with the water inlet pipeline (52) through a pipeline thirteen (173), and the inlets of the first liquid inlet check valve (168) and the second liquid inlet check valve (172) are communicated with the water leakage collecting box (61) through a pipeline fourteen (174).

As shown in the figures 1 and 3, a P port of the electromagnetic directional valve (175) is communicated with an oil pump outlet of an oil pump motor set (33) through a pipeline eight (69), a T port is communicated with an oil tank (6), an A port is communicated with an oil inlet and outlet port four (135) on a left flange fourteen (134) of a right connecting cylinder barrel (149) of a drainage pressure cylinder assembly (144), and a B port is communicated with an oil inlet and outlet port three (128) on a right flange eleven (129) of a left connecting cylinder barrel (159) of the drainage pressure cylinder assembly (144).

As shown in fig. 3, the drainage pressure cylinder assembly (144) comprises a second displacement sensor (120), a left pressure cylinder (166), a left plunger sealing body (160), a left connecting cylinder (159), a hydraulic cylinder (153), a right connecting cylinder (149), a right plunger sealing body (148), a right pressure cylinder (142) and a second piston plunger assembly (132).

As shown in fig. 3, a second displacement sensor (120) is arranged on the left end face of the left pressurizing cylinder barrel (166), the second displacement sensor (120) is connected with an inner hole on the left end face of the left pressurizing cylinder barrel (166) through a thread, a fourth water inlet and outlet (165) is arranged on the excircle of the left end, a left plunger sealing body (160) is arranged in an inner hole on the right end of the left pressurizing cylinder barrel (166), a sixth sealing groove (123), a sixth centralizing groove (127), a fourth water leakage collecting groove (162) and a fourth lubricating oil collecting groove (161) are arranged in the inner hole of the left plunger sealing body (160), a fourth water leakage outlet (163) and a third lubricating oil inlet and outlet (125) are arranged on a ninth flange (124) of the left pressurizing cylinder barrel (166), the fourth water leakage outlet (163) is communicated with the fourth water leakage collecting groove (162), and the third lubricating oil inlet and outlet (125) is communicated with the fourth lubricating oil collecting groove (161).

As shown in fig. 1 and 3, a water inlet and outlet third (143) is arranged on the outer circle of the right end of the right pressurizing cylinder barrel (142), a right plunger sealing body (148) is arranged in the inner hole of the left end, a sealing groove eighth (141), a righting groove seventh (137), a water leakage collecting groove third (146) and a lubricating oil collecting groove third (147) are arranged in the inner hole of the right plunger sealing body (148), a water leakage outlet third (145) and a lubricating oil inlet and outlet fourth (139) are arranged on a flange sixteen (140) of the right pressurizing cylinder barrel (142), the water leakage outlet third (145) is communicated with the water leakage collecting groove third (146), and the lubricating oil inlet and outlet fourth (139) is communicated with the lubricating oil collecting groove third (147); the third water leakage port (145) and the fourth water leakage port (163) are communicated with the water leakage collecting box (61) through a pipe twelve (170).

As shown in fig. 3, a leakage port four (158) is arranged at the lower part of the outer circle of the left connecting cylinder barrel (159), and a sealing groove ten (156) and a righting groove ten (157) are arranged in the inner hole at the right end.

As shown in fig. 3, a third leakage port (150) is arranged at the lower part of the outer circle of the right connecting cylinder barrel (149), and a ninth sealing groove (152) and an eighth righting groove (151) are arranged in the inner hole at the left end.

As shown in fig. 3, a sealing groove seven (131) and a righting groove nine (154) are arranged on the excircle of the second piston (155), a left plunger (122) is arranged at the left end, a right plunger (136) is arranged at the right end, and the second piston (155), the left plunger (122) and the right plunger (136) form a whole; a second magnetic ring (121) is arranged in an inner hole of the left end face of the left plunger (122), and a second counter bore (164) is formed in the center of the second magnetic ring.

As shown in fig. 3, the left pressurizing cylinder (166) and the left connecting cylinder (159) are connected together in a centering way through a flange nine (124) and a flange ten (126); the left connecting cylinder barrel (159) and the hydraulic cylinder barrel (153) are connected together in a centering way through an eleven flange (129) and an twelve flange (130); the hydraulic cylinder (153) and the right connecting cylinder (149) are connected together in a centering way through a thirteen flange (133) and a fourteen flange (134); the right connecting cylinder (149) and the right pressurizing cylinder (142) are connected together in a centering way through a flange fifteen (138) and a flange sixteen (140).

As shown in FIG. 3, the second piston (155) is slidably fitted in the inner bore of the hydraulic cylinder (153), the left plunger (122) is slidably fitted in the right end inner bore of the left connecting cylinder (159) and the inner bore of the left plunger sealing body (160), and the right plunger (136) is slidably fitted in the left end inner bore of the right connecting cylinder (149) and the inner bore of the right plunger sealing body (148).

Referring to fig. 1 and 3, when the water level in the water leakage collection box (61) is higher than the liquid level set by the PLC, the first liquid level sensor (64) sends a signal to control the oil pump motor set (33) in the water leakage discharge power hydraulic station (34) to start working, the second displacement sensor (120) controls the electromagnetic directional valve (175) to change direction at the set position, the high-pressure oil drives the water drainage pressurizing cylinder assembly (144) to reciprocate, suck and discharge liquid, the leaked water in the water leakage collection box (61) is discharged into the water inlet pipeline (52) through a pipeline thirteen (173), when the water level in the water leakage collection box (61) is lower than the liquid level set by the PLC, the first liquid level sensor (64) sends a signal to control the oil pump motor set (33) and the electromagnetic directional valve (175) in the water leakage discharge power hydraulic station (34) to stop working, the oil pump motor set (33) and the electromagnetic directional valve (175) in the water leakage discharge power hydraulic station (34) are restarted after the leaked water leakage collection box (61) reaches the liquid level set by the PLC, and the action of the second liquid level is repeated.

Referring to fig. 1 and 3, a specific embodiment of the leakage water discharge system (71) is shown: the electromagnetic reversing valve (175) adopts a single electromagnet two-position four-way one-way valve with the specification model number of 4WE6D61B/CG24N9Z 5L; the diameters of valve balls of the liquid inlet one-way valve I (168), the liquid inlet one-way valve II (172), the liquid discharge one-way valve I (167) and the liquid discharge one-way valve II (171) are 15.88mm, and the size of a valve seat is a sealing unit with the outer diameter of 20mmX, the inner diameter of 11.68mmX and the height of 12.05 mm.

Referring to fig. 3, one embodiment of a drain cylinder assembly (144): left pressure boost cylinder (166) and right pressure boost cylinder (142) adopt the internal diameter to be 61mm, the external diameter is 100mm, length is 300mm, the flange external diameter is 165 mm's cylinder, left side is connected cylinder (159) and right side and is connected cylinder (149) and adopt the internal diameter to be 83mm, external diameter 105mm, length is 205mm, one end flange external diameter is 165mm, the other end flange external diameter is 175 mm's cylinder, hydraulic cylinder (153) adopt the internal diameter to be 100mm, the external diameter is 120mm, length is 300mm, the flange external diameter is 175 mm's cylinder, piston plunger assembly two (132) adopt the piston external diameter to be 100mm, thickness is 65mm, the external diameter of left plunger (122) and right plunger (136) is 60mm, length is 520mm.

As shown in figure 1, the double-acting booster cylinder (39) is driven by a closed loop variable hydraulic pump assembly (11), and a flushing valve (27) is arranged between a working pipeline A (19) and a working pipeline B (72).

As in fig. 1, the double-acting pressure cylinders (39) may be connected in parallel one or more.

As in fig. 1, the double-acting pressure cylinder (39) may be placed upright or flat.

As shown in FIG. 1, a leakage water collecting tank (61) and a leakage water discharging system (71) are provided.

As shown in figure 1, the oil tank (6) adopts a closed oil tank, the height of the liquid level in the oil tank (6) is adjusted through the contraction and expansion of the volume of the liquid level adjusting leather bag (3), and the volume of the liquid level adjusting leather bag (3) is set through a fan (1), a rocker (4) and a pressing plate (5).

Like figure 1, adopt to seal the oil tank and can avoid taking place the condensation between cold air and the hot oil tank and produce the drop of water phenomenon, thoroughly stopped the comdenstion water of drop of water gathering to the pollution of hydraulic oil, adopt simultaneously to seal the oil tank and can prevent that dust and granular debris in the external environment from getting into the oil tank and polluting hydraulic oil, influence hydraulic components's life.

Claims (10)

1. The closed type hydraulic drive double-acting efficient hydraulic pressurizing water injection device is characterized by comprising a fan (1), a leather bag placing box (2), a liquid level adjusting leather bag (3), a rocker (4), a pressing plate (5), an oil tank (6), an air inlet one-way valve (7), an oil tank safety valve I (9), a power motor (10), a closed loop variable hydraulic pump assembly (11), an A working pipeline (19), a B working pipeline (72), an A working pipeline pressure gauge (24), a B working pipeline pressure gauge (29), a flushing valve (27), a PLC control system (28), a double-acting pressurizing cylinder (39), a drainage one-way valve I (41), a drainage two-way valve II (56), an water inlet one-way valve I (42), a water inlet two-way valve II (55), a pressure stabilizing energy accumulator (47), a drainage valve (48), a bypass valve (51), a water inlet valve (53), a water inlet filter (54), a drainage pressure gauge (43), a water inlet pressure gauge (50), a water leakage collecting box (61), a lubricating system (62), a two-way electromagnetic valve (70), a water leakage discharging system (71), a safety valve II (74), a three-way motor independent heat radiator (79), a heat radiator (80), a heat radiator and a radiator, A backflow prevention check valve (77) and a return oil filter (81); the closed loop variable hydraulic pump assembly (11) comprises a closed loop variable hydraulic pump (12), a control valve (13), an oil supplementing pump (14), a filter (15), an oil supplementing overflow valve (16), an oil supplementing working pressure gauge (17), a pressure cut-off valve (18), a first overpressure overflow valve (20), a second overpressure overflow valve (21), a first oil supplementing check valve (22) and a second oil supplementing check valve (23); the flushing valve (27) comprises a hydraulic control valve (25) and a pressure maintaining valve (26); an inlet and an outlet of one closed loop variable hydraulic pump (12) are connected with a second oil inlet and outlet (36) of the double-acting pressurizing cylinder (39) through a working pipeline A (19), and the other inlet and the outlet are connected with a first oil inlet and outlet (35) of the double-acting pressurizing cylinder (39) through a working pipeline B (72); a first water inlet and outlet (40) of an upper pressurizing cylinder barrel (103) of the double-acting pressurizing cylinder (39) is provided with a first water discharge check valve (41) and a first water inlet check valve (42), a second water inlet and outlet (57) of a lower pressurizing cylinder barrel (82) of the double-acting pressurizing cylinder (39) is provided with a second water discharge check valve (56) and a second water inlet check valve (55), inlets of the first water inlet check valve (42) and the second water inlet check valve (55) are communicated through a third pipeline (45), the first water discharge check valve (41) and the second water discharge check valve (56) are communicated through a second pipeline (44), a second water discharge pressure gauge (43), a pressure stabilizing energy accumulator (47) and a second water discharge valve (48) are arranged on the second outlet pipeline (44) of the first water discharge check valve (41) and the second water discharge check valve (56), and an outlet of the second water discharge valve (48) is communicated with a water injection well (49); the inlets of the water inlet one-way valve I (42) and the water inlet one-way valve II (55) are provided with a water inlet filter (54), a water inlet pressure gauge (50) and a water inlet valve (53), the inlet of the water inlet valve (53) is communicated with a water inlet pipeline (52), and a bypass valve (51) is arranged between the inlet of the water inlet valve (53) and the inlet of the water discharge valve (48); a two-position two-way electromagnetic valve (70), a safety valve II (74), an air-cooled radiator I (75), an anti-backflow one-way valve (77) and an oil return filter (81) are arranged on an outlet pipeline nine (73) of the pressure stabilizing valve (26); an outlet of an oil pump of the independent heat dissipation oil pump motor set (76) is provided with a second air-cooled radiator (80) and a third safety valve (79), an inlet of the second air-cooled radiator (80) is connected with an inlet of the third safety valve (79) through a tenth pipeline (78), an outlet of the second air-cooled radiator (80) is communicated with an inlet of an oil return filter (81), and an outlet of the third safety valve (79) is communicated with an oil tank (6); a fan (1) and a liquid level adjusting leather bag (3) are arranged in the leather bag placing box (2), a one-way valve (7) is arranged at the outlet of the fan (1), the outlet of the one-way valve (7) is communicated with the liquid level adjusting leather bag (3), and the liquid level adjusting leather bag (3) is communicated with an oil tank (6) through a pipeline I (8); a rocker (4) and a pressing plate (5) are respectively arranged on the side surface and the inner part of the leather bag placing box (2); a first oil tank safety valve (9) is arranged on the oil tank (6); a first liquid level sensor (64) is arranged on the water leakage collecting box (61).

2. The closed type hydraulic drive double-acting high-efficiency hydraulic pressurizing water injection device according to claim 1, wherein the double-acting pressurizing cylinder (39) comprises a first displacement sensor (104), an upper pressurizing cylinder barrel (103), an upper plunger sealing body (98), an upper connecting cylinder barrel (97), a power hydraulic cylinder barrel (91), a lower connecting cylinder barrel (88), a lower plunger sealing body (86), a lower pressurizing cylinder barrel (82) and a first piston plunger assembly (113); a first displacement sensor (104) is arranged on the upper end face of the upper pressurizing cylinder barrel (103), the first displacement sensor (104) is connected with an inner hole of the upper end face of the upper pressurizing cylinder barrel (103) through threads, a first water inlet and outlet (40) is arranged on the outer circle of the upper end, an upper plunger sealing body (98) is arranged in an inner hole of the lower end of the upper pressurizing cylinder barrel (103), and a first sealing groove (107), a second righting groove (109), a second water leakage collecting groove (101) and a second lubricating oil collecting groove (100) are arranged in the inner hole of the upper plunger sealing body (98); a first water leakage port (38) and a first lubricating oil inlet/outlet port (37) are arranged on a seventh flange (108) of the upper pressurizing cylinder barrel (103), the first water leakage port (38) is communicated with a second water leakage collecting tank (101), and the first lubricating oil inlet/outlet port (37) is communicated with a second lubricating oil collecting tank (100); a water inlet and outlet II (57) is arranged on the outer circle of the lower end of the lower pressurizing cylinder barrel (82), a lower plunger sealing body (86) is arranged in an inner hole of the upper end, a sealing groove fifth (119), a righting groove fifth (117), a water leakage water collecting tank I (83) and a lubricating oil collecting tank I (84) are arranged in an inner hole of the lower plunger sealing body (86), a water leakage outlet II (59) and a lubricating oil inlet and outlet II (58) are arranged on a flange eighth (118) of the lower pressurizing cylinder barrel (82), the water leakage outlet II (59) is communicated with the water leakage water collecting tank I (83), and the lubricating oil inlet and outlet II (58) is communicated with the lubricating oil collecting tank I (84); the first water leakage port (38) and the second water leakage port (59) are communicated with a water leakage collecting box (61) through a pipeline five (60); a second leakage opening (96) is formed in the lower portion of the outer circle of the upper connecting cylinder barrel (97), and a second sealing groove (111) and a third righting groove (110) are formed in an inner hole in the lower end of the upper connecting cylinder barrel; a first leakage opening (87) is formed in the lower portion of the outer circle of the lower connecting cylinder barrel (88), and a fourth sealing groove (114) and a fourth righting groove (115) are formed in an inner hole in the upper end of the lower connecting cylinder barrel; a third sealing groove (112) and a first righting groove (92) are formed in the excircle of the first piston (93), an upper plunger (106) is arranged at the upper end of the first piston, a lower plunger (116) is arranged at the lower end of the first piston, and the first piston (93), the upper plunger (106) and the lower plunger (116) form a whole; a first magnetic ring (105) is arranged in an inner hole of the upper end face of the upper plunger (106), and a first counter bore (102) is formed in the center; go up pressure cylinder (103) and last connecting cylinder (97) through flange seven (108) and flange six (99) centering link together, go up connecting cylinder (97) and power hydraulic cylinder (91) through flange five (95) and flange four (94) centering link together, power hydraulic cylinder (91) and lower connecting cylinder (88) are through flange three (90) and flange two (89) centering link together, lower connecting cylinder (88) and lower pressure cylinder (82) are through flange one (85) and flange eight (118) centering link together.

3. The closed type hydraulic drive double-acting high-efficiency hydraulic pressurizing water injection device as claimed in claim 1, wherein the lubricating system (62) comprises a lubricating oil pump motor set (65), a second liquid level sensor (66) and a lubricating oil tank (63); an oil pump outlet of the lubricating oil pump motor group (65) is communicated with a lubricating oil inlet and outlet port II (58) on a lower pressurizing cylinder barrel (82) of the double-acting pressurizing cylinder (39), a pipeline IV (46), a lubricating oil inlet and outlet port I (37) on an upper pressurizing cylinder barrel (103), a pipeline VII (68), a lubricating oil inlet and outlet port IV (139) on a right pressurizing cylinder barrel (142) of the drainage pressurizing cylinder assembly (144), a pipeline eleven (169), a lubricating oil inlet and outlet port III (125) on a left pressurizing cylinder barrel (166) of the drainage pressurizing cylinder assembly (144) and a lubricating oil tank (63) in sequence; an outlet of the two-position two-way electromagnetic valve (70) is communicated with the lubricating oil tank (63) through a pipeline six (67).

4. The closed hydraulic drive double-acting high-efficiency hydraulic pressurizing water injection device according to claim 1, wherein the water leakage discharge system (71) comprises a water leakage discharge power hydraulic station (34), an electromagnetic directional valve (175), a water discharge pressurizing cylinder assembly (144), a first liquid inlet check valve (168), a second liquid inlet check valve (172), a first liquid discharge check valve (167) and a second liquid discharge check valve (171); the water leakage discharge power hydraulic station (34) comprises an oil pump motor set (33), an oil absorption filter (32), a pressure sensor (30) and an overflow valve (31); the outlets of the first liquid drainage check valve (167) and the second liquid drainage check valve (171) are communicated with the water inlet pipeline (52) through a pipeline thirteen (173); inlets of the first liquid inlet check valve (168) and the second liquid inlet check valve (172) are communicated with the water leakage collecting box (61) through a fourteen (174) pipeline; a P port of the electromagnetic directional valve (175) is communicated with an oil pump outlet of an oil pump motor set (33) through a pipeline eight (69), a T port is communicated with an oil tank (6), an A port is communicated with an oil inlet and outlet port four (135) on a left flange fourteen (134) of a right connecting cylinder barrel (149) of a drainage pressure cylinder assembly (144), and a B port is communicated with an oil inlet and outlet port three (128) on a right flange eleven (129) of a left connecting cylinder barrel (159) of the drainage pressure cylinder assembly (144).

5. The closed type hydraulic drive double-acting high-efficiency hydraulic pressurizing water injection device according to claim 4, wherein the water discharge pressurizing cylinder assembly (144) comprises a second displacement sensor (120), a left pressurizing cylinder (166), a left plunger sealing body (160), a left connecting cylinder (159), a hydraulic cylinder (153), a right connecting cylinder (149), a right plunger sealing body (148), a right pressurizing cylinder (142) and a second piston plunger assembly (132); a second displacement sensor (120) is arranged on the left end face of the left pressurizing cylinder barrel (166), the second displacement sensor (120) is connected with an inner hole of the left end face of the left pressurizing cylinder barrel (166) through threads, a fourth water inlet and outlet (165) is arranged on the outer circle of the left end, a left plunger sealing body (160) is arranged in an inner hole of the right end of the left pressurizing cylinder barrel (166), a sixth sealing groove (123), a sixth righting groove (127), a fourth water leakage collecting groove (162) and a fourth lubricating oil collecting groove (161) are arranged in the inner hole of the left plunger sealing body (160), a fourth water leakage outlet (163) and a third lubricating oil inlet and outlet (125) are arranged on a ninth flange (124) of the left pressurizing cylinder barrel (166), the fourth water leakage collecting groove (163) is communicated with the fourth water leakage collecting groove (162), and the third lubricating oil inlet and outlet (125) is communicated with the fourth lubricating oil collecting groove (161); a water inlet and outlet third (143) is arranged on the right-end excircle of the right pressurizing cylinder barrel (142), a right plunger sealing body (148) is arranged in a left-end inner hole, a sealing groove eighth (141), a righting groove seventh (137), a water leakage collecting groove third (146) and a lubricating oil collecting groove third (147) are arranged in a right plunger sealing body (148) inner hole, a water leakage outlet third (145) and a lubricating oil inlet and outlet fourth (139) are arranged on a flange sixteen (140) of the right pressurizing cylinder barrel (142), the water leakage outlet third (145) is communicated with the water leakage collecting groove third (146), and the lubricating oil inlet and outlet fourth (139) is communicated with the lubricating oil collecting groove third (147); the third water leakage port (145) and the fourth water leakage port (163) are communicated with the water leakage collecting box (61) through a pipeline twelve (170); a leakage port IV (158) is arranged at the lower part of the excircle of the left connecting cylinder barrel (159), and a sealing groove VI (156) and a righting groove VI (157) are arranged in an inner hole at the right end; a leakage port III (150) is arranged at the lower part of the outer circle of the right connecting cylinder barrel (149), and a sealing groove ninth (152) and a righting groove eighth (151) are arranged in the inner hole at the left end; a sealing groove seven (131) and a righting groove nine (154) are arranged on the excircle of the second piston (155), a left plunger (122) is arranged at the left end, a right plunger (136) is arranged at the right end, and the second piston (155), the left plunger (122) and the right plunger (136) form a whole; a magnetic ring II (121) is arranged in an inner hole of the left end face of the left plunger (122), a counter bore II (164) is arranged in the center, and the left pressurizing cylinder barrel (166) and the left connecting cylinder barrel (159) are connected together in a centering way through a flange nine (124) and a flange ten (126); the left connecting cylinder barrel (159) and the hydraulic cylinder barrel (153) are connected together in a centering way through an eleven flange (129) and an twelve flange (130); the hydraulic cylinder (153) and the right connecting cylinder (149) are connected together in a centering way through a thirteen flange (133) and a fourteen flange (134); the right connecting cylinder (149) and the right pressurizing cylinder (142) are connected together in a centering way through a flange fifteen (138) and a flange sixteen (140).

6. The closed hydraulic-driven double-acting high-efficiency hydraulic pressurizing water injection device according to claim 1, characterized in that the double-acting pressurizing cylinder (39) is driven by a closed-loop variable hydraulic pump assembly (11); a flushing valve (27) is arranged between the working pipeline A (19) and the working pipeline B (72).

7. Closed hydraulic-driven double-acting high-efficiency hydraulic pressure-boosting water injection equipment according to claim 1, characterized in that the double-acting pressure-boosting cylinders (39) can be connected in parallel one or more.

8. Closed type hydraulic drive double-acting high-efficiency hydraulic pressurizing water injection equipment according to claim 1, characterized in that the double-acting pressurizing cylinder (39) can be placed vertically or horizontally.

9. A closed hydraulically driven double-acting high-efficiency hydraulic pressurized water injection apparatus according to claim 1, characterized in that a leakage water collection tank (61) and a leakage water discharge system (71) are provided.

10. The closed hydraulic-driven double-acting high-efficiency hydraulic pressurizing water injection device according to claim 1, characterized in that the oil tank (6) is a closed oil tank, the height of the liquid level in the oil tank (6) is adjusted by the contraction and expansion of the volume of the liquid level adjusting leather bag (3), and the volume of the liquid level adjusting leather bag (3) is set by the fan (1), the rocker (4) and the pressure plate (5).

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