Hydraulic control automatic pressurization system and pressurization method

Abstract

The hydraulic control automatic pressurization system comprises a water supply system, a reversing system and a liquid supply system, the liquid supply system comprises two liquid inlets / outlets which are respectively communicated with a high-pressure oil outlet, and the water supply system is communicated with the liquid supply system through the reversing system; the two liquid inlets / outlets communicate with first liquid paths correspondingly, the two first liquid paths communicate with a second liquid path jointly, the second liquid path communicates with a high-pressure oil outlet, and liquid drainage one-way valves are installed on the two first liquid paths and can control the Z cavity or the U cavity to communicate with the second liquid path. Static-pressure water enters and exits from the X cavity and the Y cavity in a circulating and reciprocating mode automatically, then liquid suction and liquid drainage are conducted automatically, the column lifting device can work in a narrow space under a mine conveniently, the traditional mode that the flowing direction of the static-pressure water is frequently replaced manually is replaced, column lifting work is facilitated, reversing of the static-pressure water is more accurate, and the working efficiency of the column lifting device is improved. And the column lifting efficiency and the automation degree of the column lifting device are improved.

Description

Technical Field

[0001] The invention relates to the technical field of hydraulic machinery, and in particular to a hydraulically controlled automatic pressure-increasing system and a pressure-increasing method. Background Art

[0002] With the continuous increase in energy demand, the coal mining industry has achieved rapid development. During the mining process, temporary supports are usually used for support and protection of equipment. In addition to coal mining, temporary supports are also used in the maintenance of underground tunnels in coal mines, mining of corner coal, emergency rescue and other working conditions. The most commonly used form is the front exploration beam, but this method has the disadvantages of small bearing capacity and low support strength. Therefore, in order to improve the support strength and ensure the support effect under the mine, the current temporary support mostly adopts the form of single hydraulic support, and the lifting of the hydraulic support usually adopts a column lifter. The liquid injected into the hydraulic support needs to be pressurized so that the liquid can have the pressure to lift the hydraulic support. During the pressurization, the hydraulic support is lifted by a hydraulic column lifter. Static water is often used as a source of power to pressurize the emulsion circulation and add it to the hydraulic support. When the emulsion circulation is pressurized, a reversing valve is required to control the flow direction of the static water. However, the existing reversing valve is usually manually controlled. The staff observes the water outlet of the overflow port of the reversing valve and switches the reversing valve to control the connection between the static water and different cavities of the booster cylinder. This manual control method has many disadvantages. On the one hand, the space underground in the mine is small and it is not easy for the staff to operate. On the other hand, the water flow at the overflow port must be observed. If the observation is not timely, the problem of not being able to switch in time will occur. There is a large error in the switching time, and the emulsion outlet end is cut off, which affects the normal use of the hydraulic pipeline and reduces the efficiency of the column lifting. Summary of the invention

[0003] In order to solve the problems existing in the existing column lifter when the hydraulic column is lifted, the present invention provides a hydraulically controlled automatic pressure increasing system and a pressure increasing method.

[0004] The technical solution of the present invention is as follows:

[0005] A hydraulically controlled automatic boosting system comprises a water supply system, a reversing system and a liquid supply system, wherein the liquid supply system comprises two liquid inlets / outlets respectively connected to a high-pressure oil outlet, and the water supply system is connected to the liquid supply system through the reversing system;

[0006] A fluid supply system, comprising a booster cylinder group, wherein the booster cylinder group comprises a master cylinder, and the two ends of the master cylinder are symmetrically connected to a first sub-cylinder and a second sub-cylinder, two fluid inlet / outlet ports are respectively opened at one end of the first sub-cylinder and the second sub-cylinder away from the master cylinder, a first piston is arranged in the master cylinder, and the first piston divides the master cylinder into an X chamber and a Y chamber, a second piston is arranged in the first sub-cylinder and the second sub-cylinder, and the two second pistons respectively form a Z chamber and a U chamber with the two fluid inlet / outlet ports, and the first piston is connected to the two second pistons via a piston rod;

[0007] The water supply system comprises a first water supply pipeline, wherein one end of the first water supply pipeline is connected to a static pressure water source, and the other end of the first water supply pipeline is connected to a reversing system;

[0008] A reversing system, comprising a touch switch, a three-position four-way hydraulically controlled reversing valve group and a hydraulically controlled two-way lock, wherein two water outlet holes of the three-position four-way hydraulically controlled reversing valve group are respectively connected to the second water supply pipeline, and the two second water supply pipelines are both connected to the X cavity and the Y cavity through the hydraulically controlled two-way lock, and the hydraulically controlled two-way lock and the X cavity and the Y cavity can control the water discharge of the two. Two groups of touch switches are provided, which are symmetrically installed on both sides of the main cylinder, and the water inlets of the two are connected to the first water supply pipeline through the third water supply pipeline, and the water outlets are respectively connected to the two pilot holes of the three-position four-way hydraulically controlled reversing valve group through the fourth water supply pipeline, and the control end of the touch switch extends into the main cylinder, and the first piston can collide with the control end to control the third water supply pipeline to be connected to the first water supply pipeline;

[0009] The two inlet / outlet ports are respectively connected to a first liquid circuit, and the two first liquid circuits are commonly connected to a second liquid circuit, the second liquid circuit is connected to a high-pressure oil outlet, and the two first liquid circuits are installed with a liquid discharge check valve, which can control the Z cavity or the U cavity to be connected to the second liquid circuit;

[0010] The two first liquid paths are respectively connected to the third liquid path, and the two third liquid paths are commonly connected to the emulsion supply system, and the two third liquid paths are both connected to a liquid suction one-way valve, which can control the emulsion supply system to be connected to the Z cavity or the U cavity.

[0011] In order to improve the boosting performance of the booster pump group and increase the pressure of the emulsion pumped out of the Z cavity and the U cavity, the cylinder diameters of the first auxiliary cylinder and the second auxiliary cylinder are consistent, and both are smaller than the cylinder diameter of the main cylinder.

[0012] The specific design of the touch switch is that the touch switch includes a housing, a sleeve is installed at one end of the housing, and the sleeve is installed on the side of the master cylinder, and the control end is a push rod, which passes through the sleeve to the master cylinder;

[0013] A water inlet cylinder is installed at the other end of the shell, and the water inlet at the water inlet cylinder is connected to the third water supply pipeline. A water outlet is provided on the side of the shell for connecting to the fourth water supply pipeline. A block is provided in the shell near the side of the water outlet near the water inlet cylinder, and a water hole is horizontally provided on the block to connect the water inlet and the water outlet;

[0014] A movable rod is horizontally slidably arranged in the water hole, and a blocking bead is installed at one end of the movable rod close to the water inlet cylinder to block the water hole. The movable rod extends toward one side of the push rod, and the push rod can push the movable rod to move toward the water inlet cylinder through an elastic component, and can be reset through the elastic component.

[0015] In order to make the movable rod more stable when moving, the movable rod includes a thin rod end with a diameter smaller than the water hole and a thick rod end with a diameter larger than the water hole, and a limiting cylinder for limiting the thick rod end is provided in the shell, and the thick rod end is slidably connected to the inner ring of the limiting cylinder.

[0016] The specific design of the elastic component is that the elastic component includes a push rod horizontally slidably arranged in the shell, and one end of the push rod extends into the sleeve, and the push rod can push the push rod to slide in the horizontal direction;

[0017] The inner wall of the shell is provided with a circular ring, and the push rod is slidably arranged with the inner wall of the circular ring. The outer edge surface of the push rod is installed with a limiting ring, and a first spring is arranged between the limiting ring and the convex ring.

[0018] In order to facilitate the automatic resetting of the movable rod, a water inlet chamber connected to the water inlet is opened in the water inlet cylinder, a second spring is arranged in the water inlet chamber, and a sliding seat is connected to one end of the second spring close to the stop bead, a horizontal through hole is opened in the sliding seat, and the stop bead can be moved to abut against the sliding seat.

[0019] In order to control the input of static water and the entire booster system, a main switch valve is provided on the first water supply pipeline, and the main switch valve is provided before the three-position four-way hydraulically controlled reversing valve group;

[0020] A fifth water supply pipeline is connected between one of the fourth water supply pipelines and the third water supply pipeline on the same side, and a first start-up switch valve is provided on the fifth water supply pipeline, and a second start-up switch valve is provided on the fourth water supply pipeline.

[0021] The specific design of the emulsion supply system is that a sixth water supply pipeline is connected between the first water supply pipeline and the second liquid circuit, and a water supply one-way valve is arranged on the pipeline. The emulsion supply system includes a liquid distribution valve, and the water inlet end of the liquid distribution valve is connected to the sixth water supply pipeline, the oil inlet end is connected to the emulsified oil tank, the liquid outlet end is connected to the emulsion tank, and the two third liquid circuits are both connected to the emulsified oil tank.

[0022] In order to filter the static pressure water added to the boosting system and to monitor the liquid pressure at the water inlet and oil outlet at all times, a liquid inlet filter is installed on the first water supply pipeline at the rear end of the static pressure water source, and the first water supply pipeline is connected to a liquid inlet pressure gauge, and the second liquid pipeline is connected to a liquid outlet pressure gauge.

[0023] A hydraulically controlled automatic pressurization method, using the hydraulically controlled automatic pressurization system, comprises the following steps:

[0024] S1: Start of automatic boost system;

[0025] The static pressure water source is started to provide static pressure water for the first water supply pipeline, and the main switch valve and the first start switch valve are started at the same time. The static pressure water enters the three-position four-way hydraulic control reversing valve group, and the static pressure water enters the Y cavity from the second water supply pipeline connected to the Y cavity, closes the first start switch valve, and starts the second start switch valve;

[0026] S2: Z cavity aspirates liquid, U cavity drains liquid;

[0027] The static pressure water pushes the first piston to move continuously to the left until the touch switch on the X chamber side is triggered. The static pressure water enters the touch switch on the X chamber side from the first water supply pipeline through the third water supply pipeline, and enters the three-position four-way hydraulic control reversing valve group through the fourth water supply pipeline. The static pressure water is controlled to enter the X chamber through the second water supply pipeline connected to the X chamber, pushing the first piston to move rightward, and the emulsion is sucked into the Z chamber. At the same time, the emulsion in the U chamber flows through the first liquid path and the second liquid path and is discharged at the high-pressure oil outlet;

[0028] S3: U cavity aspirates liquid, Z cavity drains liquid;

[0029] The static pressure water pushes the first piston to move continuously to the right until the touch switch on the side of the Y cavity is triggered. The static pressure water enters the touch switch on the side of the Y cavity from the first water supply pipeline through the third water supply pipeline, and enters the three-position four-way hydraulic control reversing valve group through the fourth water supply pipeline. The static pressure water is controlled to enter the Y cavity through the second water supply pipeline connected to the Y cavity, pushing the first piston to move to the left, and the emulsion is sucked into the U cavity. At the same time, the emulsion in the Z cavity flows through the first liquid path and the second liquid path and is discharged at the high-pressure oil outlet;

[0030] S4: Repeat steps S2-S3 to cyclically pressurize the emulsified oil through the Z chamber and the U chamber and then transport it to the high-pressure oil outlet for discharge.

[0031] The beneficial effects of the present invention are as follows: the present invention is a hydraulically controlled automatic pressurizing system and a pressurizing method, firstly, through the static water injection system, the emulsion sucked in by the booster cylinder group can be released to the high-pressure oil outlet after being pressurized, and the outlet can be connected to the oil inlet position of the hydraulic support through a device such as a liquid injection gun, thereby realizing the jacking function of the hydraulic support; secondly, different from the existing hydraulic column lifter, after water is supplied to the booster cylinder group, the present solution can make the static water enter the X cavity or the Y cavity through the setting of the three-position four-way hydraulically controlled reversing valve group and the hydraulically controlled two-way lock, so as to push the first piston to move back and forth, and then drive the two second pistons to circulate The ring sucks and discharges liquid from the Z cavity and the U cavity, thereby pressurizing the emulsion. In conjunction with the movement of the first piston, it reciprocates and touches the push rods of the two touch switches, which can automatically control the three-position four-way hydraulically controlled reversing valve group and the hydraulically controlled two-way lock to change the flow direction of the static water, automatically realizing the reciprocating circulation of the static water in and out of the X cavity and the Y cavity, thereby automatically sucking and discharging liquid, making it convenient for the column lifter to work in the narrow space under the mine, replacing the traditional manual frequent change of the flow direction of the static water, facilitating the column lifter work, making the reversal of the static water more accurate, and improving the efficiency of the column lifter and the degree of automation of the column lifter. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] By reading the detailed description of the preferred embodiment below, the scheme and advantages of the present application will become clear to those skilled in the art. The accompanying drawings are only for the purpose of illustrating the preferred embodiment and are not to be considered as limiting the present invention.

[0033] In the attached picture:

[0034] Figure 1 It is a schematic diagram of the structure of the present invention (system static state);

[0035] Figure 2 It is a schematic diagram of the touch switch structure;

[0036] Figure 3 This is a schematic diagram of the emulsion supply system;

[0037] Figure 4 It is a schematic diagram of the structure of the present invention (step S1 static pressure water and emulsion flow diagram);

[0038] Figure 5 It is a schematic diagram of the structure of the present invention (step S2 static pressure water and emulsion flow diagram);

[0039] Figure 6 It is a schematic diagram of the structure of the present invention (step S3 static pressure water and emulsion flow diagram);

[0040] 1. Liquid inlet / outlet; 2. High-pressure oil outlet; 3. Main cylinder; 4. First auxiliary cylinder; 5. Second auxiliary cylinder; 6. First piston; 7. X chamber; 8. Y chamber; 9. Second piston; 10. Z chamber; 11. U chamber; 12. Piston rod; 13. First water supply pipeline; 14. Static pressure water source; 15. Touch switch; 1501. Shell; 1502. Sleeve; 1503. Push rod; 1504. Water inlet cylinder; 1505. Water inlet; 1506. Water outlet; 1507. Stopper; 1508. Water hole; 1509. Movable rod; 1510. Stopper bead; 1511. Limiting cylinder; 1512. Push rod; 1513. Ring; 1514. Limiting ring; 1515. First spring; 1516. Water inlet chamber; 1517. Second Spring; 1518, slide seat; 1519, through hole; 16, three-position four-way hydraulically controlled reversing valve group; 17, hydraulically controlled two-way lock; 18, second water supply pipeline; 19, third water supply pipeline; 20, fourth water supply pipeline; 21, first liquid circuit; 22, second liquid circuit; 23, discharge check valve; 24, third liquid circuit; 25, emulsion supply system; 2501, liquid distribution valve; 2502, emulsified oil tank; 2506, emulsion tank; 26, liquid suction check valve; 27, main switch valve; 28, fifth water supply pipeline; 29, first start switch valve; 30, second start switch valve; 31, sixth water supply pipeline; 32, water supply check valve; 33, liquid inlet filter; 34, liquid inlet pressure gauge; 35, liquid outlet pressure gauge; 36, high and low pressure mixing valve. DETAILED DESCRIPTION

[0041] The exemplary embodiments of the present disclosure will be described in more detail below in conjunction with the accompanying drawings. It should be noted that these embodiments are provided to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art. The present disclosure can be implemented in various forms and should not be limited by the embodiments described herein.

[0042] Example

[0043] like Figure 1-6 A hydraulically controlled automatic pressurizing system is shown, comprising a water supply system, a reversing system and a liquid supply system, wherein the liquid supply system comprises two liquid inlets / outlets 1, wherein the liquid inlets / outlets 1 can inhale and discharge emulsified oil and are respectively connected to high-pressure oil outlets 2, wherein the high-pressure oil outlets 2 are connected to devices such as a liquid injection gun, and the rear end is connected to the oil inlet position of the hydraulic support, and can add emulsion into the hydraulic support for lifting the support, wherein the water supply system is connected to the liquid supply system through the reversing system, and the three systems are connected through a plurality of water circuits and liquid circuits, and the water supply system and the reversing system can be controlled through the control of a plurality of valves, so that static pressure water can circulate to pressurize the pressurizing end of the liquid supply system.

[0044] The liquid supply system includes a booster cylinder group as the main component for sucking and discharging liquid. Specifically, the booster cylinder group includes a main cylinder 3, and the two ends of the main cylinder 3 are symmetrically connected to the first sub-cylinder 4 and the second sub-cylinder 5. Two inlet / outlet ports 1 are respectively opened at the first sub-cylinder 4 and the second sub-cylinder 5 at one end away from the main cylinder 3. A first piston 6 is arranged in the main cylinder 3, and the first piston 6 divides the main cylinder 3 into an X chamber 7 and a Y chamber 8. The two chambers are mainly used for the suction and discharge of static pressure water to provide power for the movement of the first piston 6. A second piston 9 is arranged in the first sub-cylinder 4 and the second sub-cylinder 5, and the two second pistons 9 A Z chamber 10 and a U chamber 11 are formed between the two liquid inlet / outlet ports 1 respectively, and the two chambers are mainly used to suck in and discharge the emulsion. The first piston 6 is connected to the two second pistons 9 by a piston rod 12, and the length of the piston rod 12 should be set to ensure that when the first piston 6 moves to abut against the inner wall of the main cylinder 3, the second piston 9 abuts against the inner wall of the auxiliary cylinder or has not moved to the position where the inner wall is abutted. The cylinder diameters of the first auxiliary cylinder 4 and the second auxiliary cylinder 5 are consistent, and both are smaller than the cylinder diameter of the main cylinder 3, so that when the first piston 6 drives the second piston 9 to move, the suction and pressure of the two auxiliary cylinders can be increased.

[0045] On the basis of the above system, the automatic boosting system also includes a water supply system, which provides static water for the system's boosting and emulsion configuration steps, and specifically includes a first water supply pipeline 13, and one end of the first water supply pipeline 13 is connected to a static water source 14, and in order to filter the static water, a liquid inlet filter 33 is installed on the first water supply pipeline 13 at the rear end of the static water source 14, and the other end is connected to the reversing system, and static water is provided to the main cylinder 3 through the reversing system, and the static water is used as the driving force of the reversing system to realize the cyclic switching water supply to the X chamber 7 and the Y chamber 8, and a main switch valve 27 is provided on the first water supply pipeline 13 before the reversing system, and a liquid inlet pressure gauge 34 is connected to the first water supply pipeline 13 before the main switch valve 27 to monitor the pressure of the static water inlet end.

[0046] In this embodiment, the reversing system in the system is used to circulate the static pressure water into the X chamber 7 and the Y chamber 8 of the master cylinder 3. Specifically, the reversing system includes a touch switch 15, a three-position four-way hydraulically controlled reversing valve group 16 and a hydraulically controlled two-way lock 17. The three are connected through a water pipeline. The two water outlets of the three-position four-way hydraulically controlled reversing valve group 16 are respectively connected to the second water supply pipeline 18, and the two second water supply pipelines 18 are connected to the X chamber 7 and the Y chamber 8 through the hydraulically controlled two-way lock 17. Through the setting of the three-position four-way hydraulically controlled reversing valve group 16, it can be circulated and separated. The two second water supply pipelines 18 are connected, and then the static pressure water is controlled to circulate into the X cavity 7 and the Y cavity 8. The hydraulically controlled two-way lock 17 and the X cavity 7 and the Y cavity 8 can control the water discharge from the two. The hydraulically controlled two-way lock 17 adopts existing components and can realize the cyclic water discharge from the X cavity 7 and the Y cavity 8. When the static pressure water enters the X cavity 7 or the Y cavity 8 through the second water supply pipeline 18, the static pressure water can be used as a driving force for the hydraulically controlled two-way lock 17, and then the end of the hydraulically controlled two-way lock 17 connected to the Y cavity 8 or the X cavity 7 is connected, so that the cavity opposite to the water inlet cavity 1516 is discharged.

[0047] On the basis of the above structure, the three-position four-way hydraulically controlled reversing valve group 16 mainly controls the circulation of the first water supply pipeline 13 and is connected to the second water supply pipeline 18 connected to the X chamber 7 or the Y chamber 8 separately, and the power for driving the reversing of the three-position four-way hydraulically controlled reversing valve group 16 is realized by the touch switch 15, and the touch switch 15 is provided with two groups, which are symmetrically installed on both sides of the main cylinder 3, and the water inlets 1505 of the two are connected to the first water supply pipeline 13 through the third water supply pipeline 19, and the static pressure water can enter the touch switch 15 through the third water supply pipeline 19, and the water outlet 1506 is connected to the two pilot holes of the three-position four-way hydraulically controlled reversing valve group 16 through the fourth water supply pipeline 20, and the inlet 1506 of the touch switch 15 is connected to the second pilot hole 1506 of the three-position four-way hydraulically controlled reversing valve group 16 through the fourth water supply pipeline 20. The connection between the water inlet 1505 and the water outlet 1506 is mainly achieved through the control end, which extends into the master cylinder 3, and the first piston 6 can contact the control end to control the third water supply pipeline 19 to be connected with the first water supply pipeline 13, and the first piston 6 can cyclically contact the control ends of the two touch switches 15, and then circulate the two third water supply pipelines 19 to be connected with the first water supply pipeline 13 separately. After the connection, the two third water supply pipelines 19 circulate into the two fourth water supply pipelines 20, and then circulate into the two pilot holes of the three-position four-way hydraulically controlled reversing valve group 16, thereby realizing the control of the three-position four-way hydraulically controlled reversing valve group 16 to circulate and connect the first water supply pipeline 13 with the second water supply pipeline 18.

[0048] Specifically, combined Figure 2The touch switch 15 includes a housing 1501, one end of which is mounted with a sleeve 1502, the sleeve 1502 and the housing 1501 are threadedly mounted, and the sleeve 1502 is mounted on the side of the master cylinder 3, the control end is a push rod 1503, which penetrates the sleeve 1502 into the master cylinder 3, and the end of the sleeve 1502 away from the housing 1501 can limit the push rod 1503 to prevent the push rod 1503 from completely moving out of the sleeve 150 2. During the sliding process, the first piston 6 can push the push rod 1503 to move in the direction of moving out of the master cylinder 3, and a water inlet cylinder 1504 is installed at the other end of the housing 1501, and the water inlet 1505 at the water inlet cylinder 1504 is connected to the third water supply pipeline 19. The side of the housing 1501 is provided with a water outlet 1506 for connecting to the fourth water supply pipeline 20. The static pressure water enters at the water inlet 1505 and flows out at the water outlet 1506;

[0049] In order to realize the connection and disconnection of the water inlet 1505 and the water outlet 1506 controlled by the push rod 1503, a block 1507 is provided in the shell 1501 on the side of the water outlet 1506 close to the water inlet cylinder 1504, and the block 1507 can block the shell 1501. However, in order to allow the static pressure water to pass through, the block 1507 is horizontally provided with a water hole 1508, which can connect the water inlet 1505 and the water outlet 1506, and a movable rod 1509 is horizontally slidably provided in the water hole 1508, and a blocking bead 1510 is installed on the end of the movable rod 1509 close to the water inlet cylinder 1504, which can block the water hole 1508. 09 can drive the blocking column to leave the water hole 1508, so that the blocking column releases the blockage of the water hole 1508, and then the water inlet 1505 and the water outlet 1506 are connected. Secondly, the movable rod 1509 extends toward the side of the push rod 1503, and the push rod 1503 can push the movable rod 1509 to move toward the water inlet cylinder 1504 through the elastic component, and can be reset through the elastic component. Through the setting of the push rod 1503 and the elastic component, the push rod 1503 can push the movable rod 1509 to drive the blocking column to move, and when the first piston 6 releases the resistance to the push rod 1503, the elastic component can drive the push rod 1503 to reset.

[0050] Moreover, the movable rod 1509 includes a thin rod end with a smaller diameter than the water hole 1508 and a thick rod end with a larger diameter than the water hole 1508, and a limiting cylinder 1511 for limiting the thick rod end is arranged in the shell 1501, and the thick rod end is slidingly connected to the inner circle of the limiting cylinder 1511, so that when the movable rod 1509 moves, the thick rod end can slide along the limiting cylinder 1511, and static pressure water passes through the gap between the thin rod end and the water hole 1508.

[0051] Specifically, the elastic component specifically includes a push rod 1512 which is horizontally slidably arranged in the shell 1501, and one end of the push rod 1512 extends into the sleeve 1502. The push rod 1503 can push the push rod 1512 to slide in the horizontal direction, and then the push rod 1512 can push the movable rod 1509 to move. The inner wall of the shell 1501 is provided with a ring 1513, and the push rod 1512 is slidably arranged with the inner wall of the ring 1513. A limiting ring 1514 is installed on the outer edge surface of the push rod 1512, and a first spring 1515 is arranged between the limiting ring 1514 and the convex ring. Through the setting of the first spring 1515, the limiting ring 1514 can be abutted against the sleeve 1502. When the push rod 1512 moves, the limiting ring 1514 compresses the first spring 1515. After the push on the push rod 1512 is released, the first spring 1515 can drive the push rod 1512 to reset, and then push the push rod 1503 to reset, and in order to facilitate the reset of the movable rod 1509, a water inlet chamber 1516 connected with the water inlet 1505 is opened in the water inlet cylinder 1504, and a second spring 1517 is arranged in the water inlet chamber 1516, and the second spring 1517 is connected with a slide seat 1518 at one end close to the blocking bead 1510, and the slide seat 1518 is provided with a horizontal through hole 1519 to ensure that static pressure water can pass through, and the blocking bead 1510 can move to abut against the slide seat 1518, that is, the push rod 1512 can push the movable rod 1509 to drive the blocking column and the slide seat 1518 to abut against each other, and then compress the second spring 1517. After the thrust is removed, the second spring 1517 can push the blocking column and the movable rod 1509 to reset and block the water hole 1508.

[0052] It should be noted that when the first piston 6 pushes the push rod 1503 to the left or right to move to the extreme position, it should not exceed the connection end of the second water supply pipeline 18 and the hydraulically controlled two-way lock 17 with the master cylinder 3, so as to avoid obstruction to the water outlet or water inlet position and ensure the normal water inlet and outlet of the X chamber 7 and the Y chamber 8 of the master cylinder 3.

[0053] In this embodiment, as part of the liquid supply system, the two inlet / outlet ports 1 are respectively connected to the first liquid path 21, mainly due to the inlet and outlet oil of the Z cavity 10 and the U cavity 11, and the two first liquid paths 21 are commonly connected to the second liquid path 22, and a discharge check valve 23 is provided on the two first liquid paths 21, so that the emulsified oil can only flow from the first liquid path 21 to the second liquid path 22, and the second liquid path 22 is connected to the high-pressure oil outlet 2, so that the emulsified oil enters the injection gun and other devices through the high-pressure oil outlet 2, and In order to monitor the oil pressure at the outlet, the second liquid circuit 22 is connected to a liquid outlet pressure gauge 35, and in order to facilitate the provision of emulsion, the two first liquid circuits 21 are respectively connected to the third liquid circuit 24, and the two third liquid circuits 24 are commonly connected to the emulsion supply system 25. The dotted line part related to it in the figure refers to the same pipeline or component on the left and right, and the two third liquid circuits 24 are connected to a liquid suction one-way valve 26, so that the emulsified oil can only flow from the supply system to the U cavity 11 or the Z cavity 10.

[0054] Moreover, a sixth water supply pipeline 31 is connected between the first water supply pipeline 13 and the second liquid pipeline 22, and a water supply check valve 32 is provided on the pipeline, which can provide static pressure water for the pressurized emulsion, and a high-low pressure mixing valve 36 is provided at the connection end with the second liquid pipeline 22, which can reduce the impact of the high pressure of the liquid on the equipment through static pressure water. Figure 3 The emulsion supply system 25 includes a liquid dispensing valve 2501, which adopts existing components, and the water inlet end of the liquid dispensing valve 2501 is connected to the sixth water supply pipeline 31 to provide static pressure water for the configuration of emulsified oil, the oil inlet end is connected to the emulsified oil tank 2502 to provide emulsified oil for the configuration of emulsified oil, the liquid outlet end is connected to the emulsion tank 2506, and the two third liquid paths 24 are both connected to the emulsified oil tank 2502. When the Z cavity 10 or the U cavity 11 absorbs liquid, liquid is supplied through the third liquid path 24 and the first liquid path 21.

[0055] It should be noted that in order to provide an initial driving force so that the entire automatic boosting system enters a cycle, a fifth water supply pipeline 28 is connected between one of the fourth water supply pipelines 20 and the third water supply pipeline 19 on the same side, and a first starting switch valve 29 is provided on the fifth water supply pipeline 28, and a second starting switch valve 30 is provided on the fourth water supply pipeline 20. When boosting is required, the first starting switch valve 29 is started and the second starting switch valve 30 is closed, so that the static pressure water can enter the three-position four-way hydraulically controlled reversing valve group 16 through the fifth water supply pipeline 28, and then the first starting switch valve 29 is closed, and the second starting switch valve 30 is opened, and the static pressure water enters the Y chamber 8, driving the first piston 6 to move to start the cycle.

[0056] The above is a detailed description of the composition of the hydraulically controlled automatic boosting system. The following is a description of the boosting method associated with the system.

[0057] A hydraulically controlled automatic pressurization method, using the hydraulically controlled automatic pressurization system in this embodiment, comprises the following steps:

[0058] S1: Combination Figure 4 ,The dashed arrows in the figure are the flow directions of the static water and the emulsified oil ,and the start-up of the automatic supercharging system is the prerequisite for the ,opening cycle of the entire automatic supercharging system;

[0059] The static pressure water source 14 is started, and the static pressure water is filtered through the liquid inlet filter 33 to provide static pressure water for the first water supply pipeline 13. At the same time, the main switch valve 27 and the first starting switch valve 29 are started, and the second starting switch valve 30 is closed. The static pressure water flows through the fifth water supply pipeline 28 and enters the three-position four-way hydraulically controlled reversing valve group 16. The static pressure water drives the three-position four-way hydraulically controlled reversing valve group 16 to connect the second water supply pipeline 18 connected to the Y chamber 8 with the first water supply pipeline 13. The static pressure water enters the Y chamber 8, and the startup of the automatic boosting system is completed. At this time, the first starting switch valve 29 is closed and the second starting switch valve 30 is started.

[0060] S2: Combination Figure 5 , the Z cavity 10 absorbs liquid, and the U cavity 11 discharges liquid, that is, the side of the entire system connected to the Z cavity 10 is for the action of sucking the emulsion, and the side connected to the U cavity 11 is for the action of discharging the emulsion.

[0061] The static pressure water in S1 pushes the first piston 6 to move continuously to the left until it triggers the touch switch 15 on the side of the X chamber 7, that is, pushes the push rod 1503 to move, and then pushes the movable rod 1509 to drive the blocking bead 1510 to move, so that the water inlet 1505 and the water outlet 1506 of the touch switch 15 are connected, and the static pressure water enters the touch switch 15 on the side of the X chamber 7 from the first water supply pipeline 13 through the third water supply pipeline 19, and enters the three-position four-way hydraulic control reversing valve group 16 at the water outlet 1506 through the fourth water supply pipeline 20. The controlled static pressure water enters into the X chamber 7 through the second water supply pipe 18 connected with the X chamber 7, pushing the first piston 6 to move to the right. At this time, the touch switch 15 on the left side automatically resets to the closed state. At the same time, the second piston 9 on the left side moves to the right, and the emulsion is sucked into the Z chamber 10. The second piston 9 on the right side moves forward. The emulsion in the U chamber 11 flows through the first liquid path 21 and the second liquid path 22 and is discharged at the high-pressure oil outlet 2. It enters into the hydraulic support through the connected injection gun and other devices for jacking operation, completing the right-side discharge cycle of the automatic booster system.

[0062] S3: Combination Figure 6 The U cavity 11 absorbs liquid, and the Z cavity 10 discharges liquid, that is, the side of the entire system connected to the Z cavity 10 is for discharging the emulsion, and the side connected to the U cavity 11 is for sucking the emulsion.

[0063] The static pressure water in S2 pushes the first piston 6 to move continuously to the right until the touch switch 15 on the side of the Y cavity 8 is triggered, pushing the push rod 1503 of the right touch switch 15, releasing the blockage of the blocking bead 1510, connecting the water inlet 1505 and the water outlet 1506 of the touch switch 15, and the static pressure water enters the touch switch 15 on the side of the Y cavity 8 from the first water supply pipeline 13 through the third water supply pipeline 19, and enters the three-position four-way hydraulic control reversing valve through the fourth water supply pipeline 20. The valve group 16 controls the static pressure water to enter the Y chamber 8 through the second water supply pipe 18 connected to the Y chamber 8, pushing the first piston 6 to move to the left, driving the two second pistons 9 to move to the left, and the emulsion is sucked into the U chamber 11. At the same time, the emulsion in the Z chamber 10 flows through the first liquid path 21 and the second liquid path 22 and is discharged at the high-pressure oil outlet 2, and finally enters the hydraulic support through the connected injection gun and other devices for jacking operation. At this point, the automatic boosting system completes a boosting cycle discharge of the emulsified oil.

[0064] S4: Repeat steps S2-S3, circulate the emulsified oil through the Z chamber 10 and the U chamber 11 to be pressurized and then transported to the high-pressure oil outlet 2 for discharge, and the emulsion circulates into the hydraulic support to lift the extended end of the hydraulic support until it rises to the required height, stop the static water supply of the static water source 14, and close the second starting switch valve 30 and the main switch valve 27.

Claims

1. A hydraulically controlled automatic boosting system, characterized in that: It comprises a water supply system, a reversing system and a liquid supply system, wherein the liquid supply system comprises two liquid inlet / outlet ports (1) respectively connected to a high-pressure oil outlet (2), and the water supply system is connected to the liquid supply system via the reversing system; A fluid supply system comprises a booster cylinder group, wherein the booster cylinder group comprises a main cylinder (3), and the two ends of the main cylinder (3) are symmetrically connected to a first auxiliary cylinder (4) and a second auxiliary cylinder (5), and two fluid inlet / outlet ports (1) are respectively opened at one end of the first auxiliary cylinder (4) and the second auxiliary cylinder (5) away from the main cylinder (3), and a first piston (6) is arranged in the main cylinder (3), and the first piston (6) divides the main cylinder (3) into an X chamber (7) and a Y chamber (8), and a second piston (9) is arranged in the first auxiliary cylinder (4) and the second auxiliary cylinder (5), and the two second pistons (9) respectively form a Z chamber (10) and a U chamber (11) between the two fluid inlet / outlet ports (1), and the first piston (6) and the two second pistons (9) are connected via a piston rod (12); The water supply system comprises a first water supply pipeline (13), wherein one end of the first water supply pipeline (13) is connected to a static pressure water source (14), and the other end is connected to a reversing system; A reversing system comprises a touch switch (15), a three-position four-way hydraulically controlled reversing valve group (16) and a hydraulically controlled two-way lock (17), wherein two water outlets of the three-position four-way hydraulically controlled reversing valve group (16) are respectively connected to a second water supply pipeline (18), and both second water supply pipelines (18) pass through the hydraulically controlled two-way lock (17) to communicate with an X cavity (7) and a Y cavity (8), and the hydraulically controlled two-way lock (17) is connected with the X cavity (7) and the Y cavity (8) to control water discharge from the two cavities, and the touch switch (15) is provided with two The control end of the touch switch (15) extends into the master cylinder (3), and the first piston (6) is able to abut against the control end to control the third water supply pipeline (19) to be connected to the first water supply pipeline (13); The two liquid inlet / outlet ports (1) are respectively connected to a first liquid path (21), and the two first liquid paths (21) are commonly connected to a second liquid path (22), the second liquid path (22) is connected to a high-pressure oil outlet (2), and the two first liquid paths (21) are provided with a liquid discharge check valve (23) capable of controlling the Z cavity (10) or the U cavity (11) to be connected to the second liquid path (22); The two first liquid paths (21) are respectively connected to a third liquid path (24), and the two third liquid paths (24) are commonly connected to an emulsion supply system (25), and both third liquid paths (24) are connected to a liquid suction one-way valve (26) capable of controlling the emulsion supply system (25) to be connected to the Z cavity (10) or the U cavity (11).

2. The hydraulically controlled automatic boosting system according to claim 1, characterized in that: The cylinder diameters of the first auxiliary cylinder (4) and the second auxiliary cylinder (5) are consistent, and both are smaller than the cylinder diameter of the main cylinder (3).

3. The hydraulically controlled automatic boosting system according to claim 1, characterized in that: The touch switch (15) comprises a housing (1501), a sleeve (1502) is installed at one end of the housing (1501), and the sleeve (1502) is installed on the side of the master cylinder (3), and the control end is a push rod (1503) that penetrates the sleeve (1502) to the inside of the master cylinder (3); A water inlet cylinder (1504) is installed at the other end of the shell (1501), and a water inlet (1505) at the water inlet cylinder (1504) is connected to a third water supply pipeline (19). A water outlet (1506) is provided on the side of the shell (1501) for connecting to a fourth water supply pipeline (20). A stopper (1507) is provided in the shell (1501) on the side of the water outlet (1506) close to the water inlet cylinder (1504), and a water hole (1508) is horizontally provided on the stopper (1507) so as to connect the water inlet (1505) and the water outlet (1506). A movable rod (1509) is horizontally slidably arranged in the water hole (1508), and a blocking bead (1510) is installed at one end of the movable rod (1509) close to the water inlet cylinder (1504) to block the water hole (1508). The movable rod (1509) extends toward one side of the push rod (1503), and the push rod (1503) can push the movable rod (1509) to move toward the water inlet cylinder (1504) through an elastic component, and can be reset through the elastic component.

4. The hydraulically controlled automatic pressure boosting system according to claim 3, characterized in that: The movable rod (1509) comprises a thin rod end with a diameter smaller than the water hole (1508) and a thick rod end with a diameter larger than the water hole (1508), and a limiting cylinder (1511) for limiting the thick rod end is arranged in the housing (1501), and the thick rod end is slidably connected to the inner ring of the limiting cylinder (1511).

5. The hydraulically controlled automatic pressure boosting system according to claim 4, characterized in that: The elastic component comprises a push rod (1512) horizontally slidably arranged in the housing (1501), and one end of the push rod (1512) extends into the sleeve (1502), and the push rod (1503) can push the push rod (1512) to slide in the horizontal direction; The inner wall of the housing (1501) is provided with a circular ring (1513), and the push rod (1512) is slidably arranged with the inner wall of the circular ring (1513); a limiting ring (1514) is installed on the outer edge surface of the push rod (1512), and a first spring (1515) is arranged between the limiting ring (1514) and the convex ring.

6. The hydraulically controlled automatic pressure boosting system according to claim 3, characterized in that: The water inlet cylinder (1504) is provided with a water inlet chamber (1516) which is connected to the water inlet (1505); a second spring (1517) is arranged in the water inlet chamber (1516); and a sliding seat (1518) is connected to one end of the second spring (1517) close to the retaining bead (1510); a horizontal through hole (1519) is provided on the sliding seat (1518), and the retaining bead (1510) can be moved to abut against the sliding seat (1518).

7. The hydraulically controlled automatic pressure boosting system according to claim 1, characterized in that: The first water supply pipeline (13) is provided with a main switch valve (27), and the main switch valve (27) is arranged before the three-position four-way hydraulically controlled reversing valve group (16); A fifth water supply pipeline (28) is connected between one of the fourth water supply pipelines (20) and the third water supply pipeline (19) on the same side, and a first start-up switch valve (29) is provided on the fifth water supply pipeline (28), and a second start-up switch valve (30) is provided on the fourth water supply pipeline (20).

8. The hydraulically controlled automatic pressure boosting system according to claim 1, characterized in that: A sixth water supply pipeline (31) is connected between the first water supply pipeline (13) and the second liquid pipeline (22), and a water supply one-way valve (32) is arranged on the pipeline. The emulsion supply system (25) comprises a liquid distribution valve (2501), and the water inlet end of the liquid distribution valve (2501) is connected to the sixth water supply pipeline (31), the oil inlet end is connected to the emulsified oil tank (2502), and the liquid outlet end is connected to the emulsified liquid tank (2506). The two third liquid pipelines (24) are both connected to the emulsified oil tank (2502).

9. The hydraulically controlled automatic pressure boosting system according to claim 1, characterized in that: A liquid inlet filter (33) is installed on the first water supply pipeline (13) at the rear end of the static pressure water source (14), and the first water supply pipeline (13) is connected to a liquid inlet pressure gauge (34), and the second liquid circuit (22) is connected to a liquid outlet pressure gauge (35).

10. A hydraulically controlled automatic pressurization method, characterized in that: The application of the hydraulically controlled automatic pressure boosting system according to any one of claims 1 to 9 comprises the following steps: S1: Start of automatic boost system; The static pressure water source (14) is started to provide static pressure water for the first water supply pipeline (13), and the main switch valve (27) and the first start switch valve (29) are started at the same time, and the static pressure water enters the three-position four-way hydraulic control reversing valve group (16), and the static pressure water enters the Y chamber (8) from the second water supply pipeline (18) connected to the Y chamber (8), the first start switch valve (29) is closed, and the second start switch valve (30) is started; S2: Z chamber (10) aspirates liquid, U chamber (11) discharges liquid; The static pressure water pushes the first piston (6) to move continuously to the left until the touch switch (15) on the side of the X chamber (7) is triggered. The static pressure water enters the touch switch (15) on the side of the X chamber (7) from the first water supply pipeline (13) through the third water supply pipeline (19), and enters the three-position four-way hydraulic control reversing valve group (16) through the fourth water supply pipeline (20). The static pressure water is controlled to enter the X chamber (7) through the second water supply pipeline (18) connected to the X chamber (7), pushing the first piston (6) to move rightward, and the emulsion is sucked into the Z chamber (10). At the same time, the emulsion in the U chamber (11) flows through the first liquid path (21) and the second liquid path (22) and is discharged at the high-pressure oil outlet (2); S3: The U cavity (11) absorbs liquid, and the Z cavity (10) discharges liquid; The static pressure water pushes the first piston (6) to move continuously to the right until the touch switch (15) on the side of the Y chamber (8) is triggered. The static pressure water enters the touch switch (15) on the side of the Y chamber (8) from the first water supply pipeline (13) through the third water supply pipeline (19), and enters the three-position four-way hydraulic control reversing valve group (16) through the fourth water supply pipeline (20). The static pressure water is controlled to enter the Y chamber (8) through the second water supply pipeline (18) connected to the Y chamber (8), pushing the first piston (6) to move leftward, and the emulsion is sucked into the U chamber (11). At the same time, the emulsion in the Z chamber (10) flows through the first liquid path (21) and the second liquid path (22) and is discharged at the high-pressure oil outlet (2); S4: Repeat steps S2-S3, and cyclically pressurize the emulsified oil through the Z chamber (10) and the U chamber (11) and then transport it to the high-pressure oil outlet (2) for discharge.

Images