Intelligent hydraulic pressurization integrated control system

Abstract

An intelligent hydraulic pressurization integrated control system comprises a power distribution cabinet arranged on a base, a controller is arranged in the power distribution cabinet, and a displacement sensor, a pressure transmitter, a liquid level sensor and a temperature sensor are electrically connected to the controller so as to collect various types of electrical parameters to achieve intelligent control. The hydraulic pressurization process is monitored and adjusted in real time; the displacement sensor is arranged on the hydraulic cylinder and used for detecting the real-time position of the hydraulic piston in the operation process, meanwhile, the hydraulic piston is controlled to conduct reversing by setting the maximum position point and the minimum position point, and reciprocating motion of the hydraulic reciprocating pump is completed. The controller is connected with a display through a communication line, so that visual monitoring is carried out, and real-time remote monitoring of the operation process is realized; a driver is further arranged on the controller so as to transmit driving instructions to the variable hydraulic pump assembly, the hydraulic driving assembly and the heat dissipation assembly, and automatic intelligent pressurization from 0 to the maximum pressurization value is completed within the pressurization range of the device.

Description

Technical field:

[0001] The invention relates to an intelligent hydraulic pressure boosting integrated control system. Background technology:

[0002] Due to the changes in formation structure, reservoir properties and crude oil properties, as well as oil layer pollution and blockage caused by the production process, many water injection wells are unable to complete the injection volume under the pressure of the water injection system. Conventional acid fracturing is used to unblock the formation, but the effectiveness period is short and the construction cost is high.

[0003] In view of the above defects, conventional acid fracturing is often used to unblock the formation, but the overall effective period is short. If the pressure of the water injection trunk line is increased, it will lead to excessive construction difficulty and cost. Therefore, in order to increase the water injection pressure, it is necessary to install oilfield booster water injection equipment at the end of the oilfield water injection system to boost the pressure of a single well.

[0004] Most of the existing oilfield booster water injection equipment relies on on-site operation by staff. Manual operation will cause many operating errors, resulting in a low degree of automation control of the hydraulic booster equipment. At the same time, the working noise is too loud, leakage pollution is serious, and equipment maintenance is too frequent, thus failing to meet the actual production requirements of booster water injection. Summary of the invention:

[0005] The embodiment of the present invention provides an intelligent hydraulic booster integrated control system with reasonable structural design, adopts intelligent control and visual monitoring, realizes real-time remote monitoring of the operation process, can automatically detect and feedback the flow rate and the inlet and outlet water pressure, reduces the outlet pressure pulsation rate, and makes the output pressure stable. Under the condition of meeting a certain displacement, the movement speed of the piston in the left booster cylinder and the right booster cylinder is reduced by a large plunger with a long stroke and a low stroke frequency, thereby increasing the service life of the booster piston, the inlet and outlet check valve and the seal, extending the equipment maintenance period, reducing the labor intensity of maintenance personnel, increasing the continuous working time and the overall service life of the equipment, and integrating multiple categories of functions such as boost injection, safety protection, data acquisition, automatic control, and remote monitoring. The variable hydraulic pump assembly is used to drive and fully utilize the energy of the incoming water to push the pistons in the two parallel hydraulic cylinders to perform reciprocating motion for boosting, which greatly improves the transmission efficiency, reduces energy consumption and leakage pollution, and effectively reduces the vibration, impact and noise of the equipment during operation, thereby meeting the actual application requirements of boost water injection and solving the problems existing in the prior art.

[0006] The technical solution adopted by the present invention to solve the above technical problems is:

[0007] Intelligent hydraulic booster integrated control system, the control system comprises:

[0008] A power distribution cabinet is installed on a base. A controller is provided inside the power distribution cabinet. A displacement sensor, a pressure transmitter, a liquid level sensor, and a temperature sensor are electrically connected to the controller to collect various types of electrical parameters for intelligent control, and to monitor and adjust the hydraulic boosting process in real time.

[0009] The displacement sensor is installed on the hydraulic cylinder to detect the real-time position of the hydraulic piston during operation. At the same time, by setting the maximum and minimum position points, the hydraulic piston is controlled to reverse, completing the reciprocating motion of the hydraulic reciprocating pump. The pressure transmitter is installed on the liquid outlet pipe of the valve box to detect the liquid outlet pressure of the valve box. The liquid level sensor and the temperature sensor are installed in the fuel tank to detect the liquid level parameter and temperature parameter of the hydraulic oil in the fuel tank.

[0010] A display is connected to the controller via a communication line for visual monitoring, realizing real-time remote monitoring of the operation process. A driver is also provided on the controller to transmit drive instructions to the variable hydraulic pump assembly, the hydraulic drive assembly, and the heat dissipation assembly respectively, and to complete automatic intelligent boosting from 0 to the maximum boosting value within the equipment boosting range.

[0011] The variable hydraulic pump assembly, the hydraulic drive assembly, and the heat dissipation assembly are respectively installed on the base and cooperate with the control system. The variable hydraulic pump assembly is used to fully utilize the energy of water to push two reciprocating parallel-connected hydraulic cylinders for reciprocating motion boosting and eliminate hydraulic shock during the commutation process. The hydraulic drive assembly is used to provide hydraulic power for the variable hydraulic pump assembly. The heat dissipation assembly is used to reduce the working temperature rise of the equipment.

[0012] The variable hydraulic pump assembly includes a reciprocating pump for reciprocating motion boosting. The reciprocating pump includes two sets of parallel-connected valve boxes, a body, and connected hydraulic cylinders, and performs long-stroke reciprocating motion through a simplified structure with fewer positioning points to reduce the requirements for the processing accuracy of the hydraulic pump and improve the overall working efficiency of the hydraulic pump.

[0013] The hydraulic drive assembly includes a fuel tank and a constant power variable oil pump. The constant power variable oil pump is used to convert the mechanical energy of the motor into the pressure energy of hydraulic oil, and then convert the pressure energy of hydraulic oil into working hydraulic pressure energy through a hydraulic oscillator. The constant power variable oil pump is connected to the motor through a coupling. The inlet of the constant power variable oil pump is flexibly connected to the inlet oil filter at the outlet of the fuel tank, so that the hydraulic oil in the fuel tank enters the constant power variable oil pump after being filtered by the inlet oil filter. The outlet of the constant power variable oil pump is connected to a tubular one-way valve through a rubber hose.

[0014] The fuel tank is connected to a motor oil pump through an inlet oil filter; a tube-type check valve and a high-pressure oil filter are successively connected to the motor oil pump, and a bladder accumulator, a pilot-operated relief valve, and a first direct-acting relief valve are arranged at the rear end of the tube-type check valve; the bladder accumulator is used to absorb the pulsation and impact during the hydraulic commutation process; the high-pressure oil filter, the tube-type check valve, and the bladder accumulator are integrated into a hydraulic valve block, so that hydraulic oil enters the commutation valve block through the tube-type check valve and the high-pressure oil filter.

[0015] The commutation valve block includes an electro-hydraulic commutation valve, a pilot-operated relief valve, and a direct-acting relief valve. The A and B ports of the electro-hydraulic commutation valve are respectively connected to the rod chambers of two hydraulic cylinders.

[0016] Each valve box is respectively provided with a slurry inlet valve body seat and a slurry outlet valve body seat; between the two connected hydraulic cylinders, there are successively connected an oil suction filter, a first motor gear pump, a second direct-acting relief valve, a first tube-type check valve, and a second manual ball valve.

[0017] A hydraulic cylinder barrel, a hydraulic piston rod, and a cylinder sleeve are arranged in the hydraulic cylinder to control the reciprocating motion of the hydraulic cylinder; an oil suction filter, a second motor gear pump, and a second tube-type check valve are also arranged in the fuel tank to provide circulating hydraulic oil for the heat dissipation component and protect the heat dissipation component by the back pressure of the check valve.

[0018] An inlet liquid valve body, an inlet liquid valve seat, an outlet liquid valve body, and an outlet liquid valve seat are arranged in the valve box, and a valve body guide is arranged on the upper part of the inlet liquid valve body; a small gland, a small split bearing, and a small cylinder head are arranged above the valve box, a large gland, a large split bearing, and a large cylinder head are arranged on the side of the valve box, a valve body fixing plate is also arranged in the valve box, and a valve box support is arranged at the bottom of the valve box.

[0019] A piston is arranged in the hydraulic cylinder. The piston is connected to the hydraulic cylinder through a hydraulic mud rod and a hydraulic piston rod to cooperate with the piston rubber to form a sealing structure in the cylinder sleeve; hydraulic cylinder end covers are respectively arranged at both ends of the hydraulic cylinder barrel, and the rodless cavity end of the hydraulic cylinder is connected through a U-shaped oil pipe; under the action of the piston, the inlet liquid pressure medium transfers energy to the hydraulic piston rod, and the hydraulic piston rod transfers energy to another hydraulic piston rod through the hydraulic oil in the rodless cavity of the hydraulic cylinder and the U-shaped oil pipe, and then transfers it to the piston at the other end; a machine body support is arranged at the bottom of the machine body to support and protect the machine body.

[0020] An oil replenishing port and an exhaust hole are provided on the hydraulic cylinder end cover of the hydraulic cylinder. The oil replenishing port is used to replenish oil to the rodless cavity of the hydraulic cylinder via an electric oil pump; an electromagnetic valve is provided on the exhaust hole, and the electromagnetic valve is used to connect to the fuel tank. The working time is set via a controller, and the electromagnetic valve is regularly opened to discharge a part of the hydraulic oil in the rodless cavity of the hydraulic cylinder. The discharge volume is the volume of the hydraulic cylinder barrel corresponding to the difference between the maximum stroke and the minimum stroke of the displacement sensor provided on the hydraulic cylinder.

[0021] When the hydraulic cylinder needs to change the oil, the solenoid valve is automatically opened to return the hydraulic oil in the rodless cavity to the fuel tank, shortening the operating stroke of the hydraulic cylinder piston. When the stroke is shortened to the minimum stroke value, the solenoid valve is automatically closed and the electric oil pump is started to replenish oil to the rodless cavity of the hydraulic cylinder. The oil replenishment stops when the hydraulic piston stroke reaches the maximum stroke value.

[0022] The present invention adopts the above structure. The variable hydraulic pump assembly utilizes the energy of water to fully push two reciprocatingly moving and interconnected hydraulic cylinders arranged in parallel for pressurization and eliminate hydraulic shock during the commutation process; the hydraulic drive assembly provides hydraulic power for the variable hydraulic pump assembly; the control system collects various types of electrical parameters to achieve intelligent control, monitors and adjusts the hydraulic pressurization process in real time. Relying on the hydraulic pistons arranged in parallel, the liquid inlet pressure received by one piston is completely transmitted to the other piston, ensuring that the hydraulic pressurization range can be from 0 to the maximum, overcoming the strict limitation of the mechanical three-cylinder pump on the inlet and outlet pressure difference requirements, and realizing stepless injection between the inlet and outlet pressure differences from 0 to the maximum pressure difference; the heat dissipation assembly reduces the working temperature rise of the equipment, ensuring the continuous and stable operation of the equipment, and having the advantages of stability, practicality, precision and high efficiency. Description of the Drawings:

[0023] Figure 1 It is a structural schematic diagram of the present invention.

[0024] Figure 2 It is a hydraulic schematic diagram of the present invention.

[0025] Figure 3 For Figure 1 The top view of

[0026] Figure 4 It is a system block diagram of the present invention.

[0027] In the figure, 1 is the fuel tank, 2 is the inlet oil filter, 3 is the motor oil pump, 4 is the high-pressure oil filter, 5 is the bladder accumulator, 6 is the tube check valve, 7 is the pilot-operated relief valve, 8 is the first direct-acting relief valve, 9 is the electro-hydraulic directional valve, 10 is the return oil filter, 11 is the displacement sensor, 12 is the first manual ball valve, 13 is the hydraulic cylinder barrel, 14 is the hydraulic piston rod, 15 is the cylinder liner, 16 is the slurry inlet valve body seat, 17 is the slurry outlet valve body seat, 18 is the first suction oil filter, 19 is the first motor gear pump, 20 is the second direct-acting relief valve, 21 is the first tube check valve, 22 is the second manual ball valve, 23 is the second suction oil filter, 24 is the second motor gear pump, 25 is the second tube check valve, 26 is the air-cooled radiator. Detailed implementation method:

[0028] To clearly illustrate the technical features of this solution, the present invention will be elaborated in detail below through specific implementation methods and in conjunction with its attached drawings.

[0029] As Figures 1-4 shown in, the intelligent hydraulic pressure boosting integrated control system, the control system includes:

[0030] A power distribution cabinet arranged on the base, a controller is provided in the power distribution cabinet, and a displacement sensor, a pressure transmitter, a liquid level sensor and a temperature sensor are electrically connected to the controller to collect various types of electrical parameters to achieve intelligent control and perform real-time monitoring and adjustment on the hydraulic pressure boosting process;

[0031] The displacement sensor is arranged on the hydraulic cylinder to detect the real-time position during the operation of the hydraulic piston. At the same time, by setting the maximum and minimum position points, the hydraulic piston is controlled to reverse, completing the reciprocating motion of the hydraulic reciprocating pump; the pressure transmitter is arranged on the liquid outlet pipe of the valve box to detect the liquid outlet pressure of the valve box; the liquid level sensor and the temperature sensor are arranged in the fuel tank to detect the liquid level parameter and temperature parameter of the hydraulic oil in the fuel tank;

[0032] A display is connected to the controller via a communication line for visual monitoring, realizing real-time remote monitoring of the operation process; a driver is also provided on the controller to transmit drive instructions to the variable hydraulic pump assembly, the hydraulic drive assembly and the heat dissipation assembly respectively, and automatically and intelligently boost from 0 to the maximum boost value within the equipment boost range.

[0033] The variable hydraulic pump assembly, the hydraulic drive assembly and the heat dissipation assembly are respectively arranged on the base and cooperate with the control system to act; the variable hydraulic pump assembly is used to fully utilize the energy of water to push two parallel-connected and communicating hydraulic cylinders to perform reciprocating motion for boosting and eliminate the hydraulic shock during the reversing process; the hydraulic drive assembly is used to provide hydraulic power for the variable hydraulic pump assembly; the heat dissipation assembly is used to reduce the working temperature rise of the equipment;

[0034] The variable hydraulic pump assembly includes a reciprocating pump that performs reciprocating motion for pressurization. The reciprocating pump includes two sets of valve boxes, a body, and interconnected hydraulic cylinders arranged in parallel. It performs long-stroke reciprocating motion through a streamlined structure with fewer positioning points to reduce the requirements for the machining accuracy of the hydraulic pump and improve the overall working efficiency of the hydraulic pump.

[0035] The hydraulic drive assembly includes an oil tank and a constant-power variable oil pump. The constant-power variable oil pump is used to convert the mechanical energy of the motor into the pressure energy of hydraulic oil, and then convert the pressure energy of the hydraulic oil into working hydraulic pressure energy through a hydraulic oscillator. The constant-power variable oil pump is connected to the motor through a coupling. The inlet of the constant-power variable oil pump is flexibly connected to the inlet oil filter at the outlet of the oil tank, so that the hydraulic oil in the oil tank enters the constant-power variable oil pump after being filtered by the inlet oil filter. The outlet of the constant-power variable oil pump is connected to a tube-type one-way valve through a rubber hose.

[0036] The oil tank is connected to an electric oil pump through an inlet oil filter. A tube-type one-way valve and a high-pressure oil filter are successively connected to the electric oil pump. A bladder accumulator, a pilot-operated relief valve, and a first direct-acting relief valve are arranged at the rear end of the tube-type one-way valve. The bladder accumulator is used to absorb the pulsation and shock during hydraulic commutation. The high-pressure oil filter, the tube-type one-way valve, and the bladder accumulator are integrated into a hydraulic valve block, so that the hydraulic oil enters the commutation valve block through the tube-type one-way valve and the high-pressure oil filter.

[0037] The commutation valve block includes an electro-hydraulic commutation valve, a pilot-operated relief valve, and a direct-acting relief valve. The A and B ports of the electro-hydraulic commutation valve are respectively connected to the rod chambers of the two hydraulic cylinders.

[0038] Each valve box is respectively provided with a slurry inlet valve body seat and a slurry outlet valve body seat. An oil suction filter, a first motor gear pump, a second direct-acting relief valve, a first tube-type one-way valve, and a second manual ball valve are successively connected between the two interconnected hydraulic cylinders.

[0039] A hydraulic cylinder barrel, a hydraulic piston rod, and a cylinder liner are arranged in the hydraulic cylinder to control the reciprocating motion of the hydraulic cylinder. An oil suction filter, a second motor gear pump, and a second tube-type one-way valve are also arranged in the oil tank to provide circulating hydraulic oil for the heat dissipation assembly and protect the heat dissipation assembly by the backpressure effect of the one-way valve.

[0040] An inlet liquid valve body, an inlet liquid valve seat, an outlet liquid valve body, and an outlet liquid valve seat are arranged in the valve box. A valve body guide is arranged on the upper part of the inlet liquid valve body. A small gland, a small split bearing, and a small cylinder head are arranged above the valve box. A large gland, a large split bearing, and a large cylinder head are arranged on the side of the valve box. A valve body fixing plate is also arranged in the valve box, and a valve box support is arranged at the bottom of the valve box.

[0041] A piston is provided inside the hydraulic cylinder. The piston is connected to the hydraulic cylinder through a hydraulic mud rod and a hydraulic piston rod to cooperate with the piston rubber to form a sealing structure inside the cylinder sleeve. Hydraulic cylinder end covers are respectively provided at both ends of the hydraulic cylinder barrel. The rodless cavity end of the hydraulic cylinder is connected through a U-shaped oil guide pipe. Under the action of the piston, the incoming liquid pressure medium transmits energy to the hydraulic piston rod, and the hydraulic piston rod transmits energy to another hydraulic piston rod through the hydraulic oil in the rodless cavity of the hydraulic cylinder and the U-shaped oil guide pipe, and then transmits it to the piston at the other end. An organism support is provided at the bottom of the organism to support and protect the organism.

[0042] A oil replenishing port and an exhaust hole are provided on the hydraulic cylinder end cover of the hydraulic cylinder. The oil replenishing port is used to replenish oil to the rodless cavity of the hydraulic cylinder via a motor oil pump. An electromagnetic valve is provided on the exhaust hole. The electromagnetic valve is used to connect to the fuel tank, and the working time is set via a controller to regularly open the electromagnetic valve to discharge a part of the hydraulic oil in the rodless cavity of the hydraulic cylinder. The discharge amount is the volume of the hydraulic cylinder barrel corresponding to the difference between the maximum stroke and the minimum stroke of the displacement sensor provided on the hydraulic cylinder.

[0043] When the hydraulic cylinder needs to change the oil, the solenoid valve is automatically opened to return the hydraulic oil in the rodless cavity to the fuel tank, shortening the operating stroke of the piston of the hydraulic cylinder. When the stroke is shortened to the minimum stroke value, the solenoid valve is automatically closed and the motor oil pump is opened to replenish oil to the rodless cavity of the hydraulic cylinder. The oil replenishment stops when the hydraulic piston stroke reaches the maximum stroke value.

[0044] The working principle of the intelligent hydraulic boosting integrated control system in the embodiments of the present invention is as follows: By adopting intelligent control and visual monitoring, real-time remote monitoring of the operation process is realized, automatic detection and feedback of flow rate and inlet and outlet water pressure can be carried out, the outlet pressure pulsation rate is reduced, and the output pressure is made stable. Under the condition of meeting a certain displacement, the movement speed of the pistons in the left boosting cylinder and the right boosting cylinder is reduced by using large plungers with long strokes and low stroke frequencies, improving the service life of the boosting pistons, inlet and outlet liquid one-way valves and seals, extending the equipment maintenance period, reducing the labor intensity of maintenance personnel, increasing the continuous working time and overall service life of the equipment, and integrating multiple functions such as boosting injection, safety protection, data acquisition, automatic regulation, and remote monitoring into one. It is driven by a variable hydraulic pump assembly and makes full use of the energy of the incoming water to push the pistons in two parallel hydraulic cylinders to reciprocate for boosting, greatly improving the transmission efficiency, reducing energy consumption and leakage pollution, and effectively reducing the vibration, impact and noise during the operation of the equipment, so as to meet the actual application requirements of boosting water injection.

[0045] In the overall solution, it mainly includes a power distribution cabinet installed on a base. A controller is provided inside the power distribution cabinet. A displacement sensor, a pressure transmitter, a liquid level sensor, and a temperature sensor are electrically connected to the controller to collect various types of electrical parameters for intelligent control, and to monitor and adjust the hydraulic boosting process in real time. The displacement sensor is installed on the hydraulic cylinder to detect the real-time position of the hydraulic piston during operation. At the same time, by setting the maximum and minimum position points, the hydraulic piston is controlled to reverse, completing the reciprocating motion of the hydraulic reciprocating pump. The pressure transmitter is installed on the liquid outlet pipe of the valve box to detect the liquid outlet pressure of the valve box. The liquid level sensor and the temperature sensor are installed in the fuel tank to detect the liquid level parameter and temperature parameter of the hydraulic oil in the fuel tank. A display is connected to the controller via a communication line for visual monitoring, realizing real-time remote monitoring of the operation process. A driver is also provided on the controller to transmit drive instructions to the variable hydraulic pump assembly, the hydraulic drive assembly, and the heat dissipation assembly respectively, and to complete automatic intelligent boosting from 0 to the maximum boosting value within the equipment boosting range.

[0046] Aiming at the drawbacks existing in the prior art, this application applies the hydraulic transmission principle. It converts the high-speed rotational mechanical energy of the motor into the pressure energy of hydraulic oil through a constant power variable oil pump, and then the hydraulic oscillator directly converts the pressure energy of the hydraulic oil into the pressure energy of the working fluid through the piston. Thus, the traditional mechanical transmission chain is changed, the mechanical transmission links are reduced, and high-efficiency energy transfer is achieved. At the same time, an oil replenishment and drainage link is set up. When there is a leakage in the hydraulic piston seal, hydraulic oil can be replenished in time to ensure that the hydraulic piston stroke meets the actual use requirements. The hydraulic oil in the rodless cavity is replaced regularly to prevent the hydraulic oil in the rodless cavity from emulsifying and deteriorating due to long-term high pressure and high temperature work, and to prevent the high temperature of the hydraulic oil from damaging the hydraulic piston seal and affecting the transmission efficiency. A boosting plunger seal body is added. Once the seal groove is corroded and damaged, only the boosting plunger seal body can be replaced, effectively reducing the maintenance amount and operation cost of the equipment.

[0047] The boosting equipment corresponding to the control system can adjust the injection volume in real time. An electromagnetic flowmeter is installed at the outlet to automatically detect the flow rate and feedback it to the controller. The controller controls the injection operation frequency of the motor oil pump to realize real-time control and adjustment of the injection volume. The automatic closed-loop adjustment ensures that the equipment injects smoothly according to the preset displacement. An accumulator is installed and the inflation pressure is set according to the working pressure to reduce the outlet pressure pulsation rate and make the output pressure stable. By adopting intelligent control and visual monitoring, real-time remote monitoring and supervision of the operation process are realized, the equipment can be unattended on-site, and the management difficulty is reduced.

[0048] For the valve box of the supercharging device, there are a liquid inlet valve body, a liquid inlet valve seat, a liquid outlet valve body and a liquid outlet valve seat that are phase-configured. A valve body guide is provided on the upper part of the liquid inlet valve body; a small gland, a small slip and a small cylinder head are provided above the valve box, a large gland, a large slip and a large cylinder head are provided on the side of the valve box, a valve body fixing plate is also provided inside the valve box, and a valve box support is provided at the bottom of the valve box; a piston is provided inside the hydraulic cylinder, and the piston is connected to the hydraulic cylinder through a hydraulic mud rod and a hydraulic piston rod to cooperate with the piston rubber to form a sealing structure inside the cylinder sleeve; hydraulic cylinder end covers are respectively provided at both ends of the hydraulic cylinder barrel, and the rodless cavity end of the hydraulic cylinder is connected through a U-shaped oil guide pipe; under the action of the piston, the inlet liquid pressure medium transmits energy to the hydraulic piston rod, and the hydraulic piston rod transmits energy to another hydraulic piston rod through the hydraulic oil in the rodless cavity of the hydraulic cylinder and the U-shaped oil guide pipe, and then transmits it to the piston at the other end; a body support is provided at the bottom of the body to support and protect the body.

[0049] Two hydraulic cylinders are connected through a U-shaped oil guide pipe. The controller sets the maximum displacement distance and the minimum displacement distance of the displacement sensor. Before the equipment starts to run, the rodless cavities of the two hydraulic cylinders are filled with oil by an electric motor oil pump, so that the equipment is suitable for on-line supercharging injection, that is, the inlet of the injection pump is a medium with a certain pressure; the pressure medium transmits energy to the hydraulic piston rod through the piston, and the hydraulic piston rod transmits energy to another hydraulic piston rod through the hydraulic oil in the rodless cavity, and then transmits it to the piston at the other end.

[0050] Furthermore, an oil filling port and an exhaust hole are provided on the hydraulic cylinder end cover of the hydraulic cylinder. The oil filling port is used to fill the rodless cavity of the hydraulic cylinder through an electric motor oil pump; an electromagnetic valve is provided on the exhaust hole, and the electromagnetic valve is used to connect to the fuel tank. The working time is set through the controller, and the electromagnetic valve is regularly opened to discharge a part of the hydraulic oil in the rodless cavity of the hydraulic cylinder, and the discharge amount is the volume of the hydraulic cylinder barrel corresponding to the difference between the maximum stroke and the minimum stroke of the displacement sensor provided on the hydraulic cylinder; when the hydraulic cylinder needs to change the oil, the solenoid valve is automatically opened to return the hydraulic oil in the rodless cavity to the fuel tank, so that the operating stroke of the hydraulic cylinder piston becomes shorter. When the stroke is shortened to the minimum stroke value, the solenoid valve is automatically closed and the electric motor oil pump is started to fill the rodless cavity of the hydraulic cylinder with oil, and the oil filling stops when the hydraulic piston stroke reaches the maximum stroke value.

[0051] For a hydraulic drive assembly, including an oil tank and a constant power variable oil pump, the constant power variable oil pump is used to convert the mechanical energy of the motor into the pressure energy of the hydraulic oil, and then convert the pressure energy of the hydraulic oil into the working hydraulic pressure energy through a hydraulic oscillator; the constant power variable oil pump is connected to the motor through a coupling, and the inlet of the constant power variable oil pump is flexibly connected to the inlet oil filter at the outlet of the oil tank, so that the hydraulic oil in the oil tank enters the constant power variable oil pump after being filtered by the inlet oil filter; the outlet of the constant power variable oil pump is connected to a tube check valve through a rubber hose; the oil tank is connected to a motor oil pump through an inlet oil filter; a tube check valve and a high-pressure oil filter are successively connected to the motor oil pump, and a bladder accumulator, a pilot-operated relief valve and a first direct-acting relief valve are arranged at the rear end of the tube check valve; the bladder accumulator is used to absorb the pulsation and impact during the hydraulic commutation process; the high-pressure oil filter, the tube check valve and the bladder accumulator are integrated into a hydraulic valve block, so that the hydraulic oil enters the commutation valve block through the tube check valve and the high-pressure oil filter; the commutation valve block includes an electro-hydraulic commutation valve, a pilot-operated relief valve and a direct-acting relief valve, and the A and B ports of the electro-hydraulic commutation valve are respectively connected to the rod chambers of two hydraulic cylinders; a slurry inlet valve body seat and a slurry outlet valve body seat are respectively arranged in each valve box; an oil suction filter, a first motor gear pump, a second direct-acting relief valve, a first tube check valve and a second manual ball valve are successively arranged between the two connected hydraulic cylinders.

[0052] Further, a hydraulic cylinder barrel, a hydraulic piston rod and a cylinder liner are arranged in the hydraulic cylinder to control the reciprocating motion of the hydraulic cylinder; an oil suction filter, a second motor gear pump and a second tube check valve are also arranged in the oil tank to provide circulating hydraulic oil for the heat dissipation assembly and protect the heat dissipation assembly by using the back pressure of the check valve.

[0053] Generally speaking, the controller can be a PLC controller, which is a digital operation electronic system specially designed for application in an industrial environment. It uses a programmable memory to store instructions for performing operations such as logical operations, sequential control, timing, counting and arithmetic operations inside it, and controls various types of mechanical equipment or production processes through digital or analog inputs and outputs.

[0054] For the heat dissipation assembly of the present application, it includes a air-cooled radiator and a radiator circulation oil pump which are set in cooperation to ensure that the working temperature of the equipment is between +10°C and +70°C. During winter construction, due to the low outdoor temperature and the viscosity of the hydraulic oil, the commutation may be abnormal. If such a situation occurs, the relief valve should be opened first and the equipment should be run without load for a period of time. When the temperature of the hydraulic oil rises above +10°C, then normal operation can be carried out.

[0055] To further enhance the safety of the equipment, a safety valve is provided on the valve box. The safety valve has been adjusted at the factory and under normal circumstances, the operator is not allowed to turn its handle. If it is necessary to adjust its safety pressure, the following steps should be strictly followed: Start the oil pump; adjust the stroke of the displacement sensor to prevent the pump from reversing. While turning the handle of the safety valve, observe the system pressure gauge. When the pressure shown on the pressure gauge reaches the required pressure, tighten the locknut of the safety valve handle.

[0056] It should be specifically noted that when the pump of this application is operating normally, the relief valve should be closed to avoid the overflow of hydraulic oil through the relief valve, which may cause the hydraulic oil temperature to rise too fast and the pump stroke rate to decrease, resulting in pump shutdown or affecting the pump displacement; the circulating water in the spray pump water tank should be kept clean. If it is contaminated or there are sundries, the clean water should be replaced and the water tank should be cleaned in time to prevent the dirt from blocking the suction pipeline of the spray pump and causing damage to the pump.

[0057] In summary, the intelligent hydraulic boosting integrated control system in the embodiments of the present invention adopts intelligent control and visual monitoring, realizes real-time remote monitoring during the operation process, can automatically detect and feedback the flow rate and the water inlet and outlet water pressure, reduces the outlet pressure pulsation rate, makes the output pressure stable. Under the condition of meeting a certain displacement, by using large pistons with long strokes and low stroke rates, the movement speeds of the pistons in the left boosting cylinder and the right boosting cylinder are reduced, the service lives of the boosting pistons, the inlet and outlet check valves and the seals are improved, the equipment overhaul period is extended, the labor intensity of maintenance personnel is reduced, the continuous working time and the overall service life of the equipment are increased, and multiple functions such as boosting injection, safety protection, data acquisition, automatic regulation, and remote monitoring are integrated into one. It is driven by a variable hydraulic pump assembly and makes full use of the energy of the incoming water to push the pistons in two parallel cylinders to reciprocate for boosting, greatly improving the transmission efficiency, reducing energy consumption and leakage pollution, and effectively reducing the vibration, impact and noise during the operation of the equipment, so as to meet the actual application requirements of boosting water injection.

[0058] The above specific implementation manners cannot be used as a limitation to the protection scope of the present invention. For those skilled in the art of this technology, any alternative improvement or transformation made to the embodiments of the present invention falls within the protection scope of the present invention.

[0059] The details not described in the present invention are all well-known technologies to those skilled in the art of this technology.

Claims

1. Intelligent hydraulic booster integrated control system, characterized in that: The control system comprises: A power distribution cabinet is arranged on the base, and a controller is arranged in the power distribution cabinet. A displacement sensor, a pressure transmitter, a liquid level sensor and a temperature sensor are electrically connected to the controller to collect multiple types of electrical parameters to realize intelligent control and monitor and adjust the hydraulic boosting process in real time; The displacement sensor is arranged on the hydraulic cylinder to detect the real-time position of the hydraulic piston during operation, and at the same time controls the hydraulic piston to switch by setting the maximum and minimum position points to complete the reciprocating motion of the hydraulic reciprocating pump; the pressure transmitter is arranged on the outlet pipe of the valve box to detect the outlet pressure of the valve box; the liquid level sensor and temperature sensor are arranged in the oil tank to detect the liquid level parameters and temperature parameters of the hydraulic oil in the oil tank; A display is connected to the controller via a communication line for visual monitoring, realizing real-time remote monitoring of the operation process; a driver is also provided on the controller to transmit drive instructions to the variable hydraulic pump assembly, hydraulic drive component and heat dissipation component respectively, to complete automatic intelligent boosting from 0 to the maximum boost value within the boost range of the equipment.

2. The intelligent hydraulic booster integrated control system according to claim 1 is characterized in that: The variable hydraulic pump assembly, hydraulic drive assembly and heat dissipation assembly are respectively arranged on the base and cooperate with the control system; the variable hydraulic pump assembly is used to fully use the energy of water to drive two parallel and connected hydraulic cylinders to perform reciprocating motion to increase pressure and eliminate hydraulic shock during the switching process; the hydraulic drive assembly is used to provide hydraulic power for the variable hydraulic pump assembly; the heat dissipation assembly is used to reduce the working temperature rise of the equipment; The variable hydraulic pump assembly includes a reciprocating pump that performs reciprocating motion to increase pressure. The reciprocating pump includes two sets of parallel valve boxes, a body and a connected hydraulic cylinder. The streamlined structure with fewer positioning points performs long-stroke reciprocating motion to reduce the requirements for the hydraulic pump's processing accuracy and improve the overall working efficiency of the hydraulic pump.

3. The intelligent hydraulic booster integrated control system according to claim 2 is characterized in that: The hydraulic drive assembly includes an oil tank and a constant power variable oil pump, wherein the constant power variable oil pump is used to convert the mechanical energy of the motor into the pressure energy of the hydraulic oil, and then convert the pressure energy of the hydraulic oil into the working hydraulic pressure energy via the hydraulic oscillator; the constant power variable oil pump is connected to the motor through a coupling, and the oil inlet of the constant power variable oil pump is flexibly connected to the oil inlet filter at the outlet of the oil tank, so that the hydraulic oil in the oil tank enters the constant power variable oil pump after being filtered by the oil inlet filter; the oil outlet of the constant power variable oil pump is connected to the tubular one-way valve through a hose; The oil tank is connected to the motor oil pump through the oil inlet filter; the motor oil pump is connected with a tubular check valve and a high-pressure oil filter in sequence, and a bladder accumulator, a pilot relief valve and a first direct-acting relief valve are arranged at the rear end of the tubular check valve; the bladder accumulator is used to absorb pulsation and impact during the hydraulic reversing process; the high-pressure oil filter, the tubular check valve and the bladder accumulator are integrated into a hydraulic valve block, so that the hydraulic oil enters the reversing valve block through the tubular check valve and the high-pressure oil filter; The reversing valve block includes an electro-hydraulic reversing valve, a pilot relief valve, and a direct-acting relief valve. The A and B ports of the electro-hydraulic reversing valve are respectively connected to the rod chambers of the two hydraulic cylinders. Each valve box is respectively provided with a slurry inlet valve seat and a slurry outlet valve seat; between the two connected hydraulic cylinders are provided an oil suction filter, a first motor gear pump, a second direct-acting overflow valve, a first tubular one-way valve and a second manual ball valve which are connected in sequence.

4. The intelligent hydraulic booster integrated control system according to claim 3 is characterized in that: A hydraulic cylinder barrel, a hydraulic piston rod and a cylinder sleeve are arranged in the hydraulic cylinder to control the reciprocating motion of the hydraulic cylinder; a matching oil suction filter, a second motor gear pump and a second tubular one-way valve are also arranged in the oil tank to provide circulating hydraulic oil for the heat dissipation component and utilize the back pressure of the one-way valve to protect the heat dissipation component.

5. The intelligent hydraulic booster integrated control system according to claim 4 is characterized in that: A liquid inlet valve body, a liquid inlet valve seat, a liquid outlet valve body and a liquid outlet valve seat are arranged in the valve box, and a valve body guide is arranged on the upper part of the liquid inlet valve body; a small pressure cover, a small slip and a small cylinder cover are arranged above the valve box, a large pressure cover, a large slip and a large cylinder cover are arranged on the side of the valve box, a valve body fixing plate is also arranged in the valve box, and a valve box bracket is arranged at the bottom of the valve box; A piston is provided in the hydraulic cylinder, and the piston is connected to the hydraulic cylinder through a hydraulic mud rod and a hydraulic piston rod to cooperate with the piston rubber to form a sealing structure in the cylinder sleeve; hydraulic cylinder end covers are provided at both ends of the hydraulic cylinder barrel, and the rodless cavity ends of the hydraulic cylinder are connected through a U-shaped oil guide pipe; under the action of the piston, the liquid pressure medium transfers energy to the hydraulic piston rod, and the hydraulic piston rod transfers energy to another hydraulic piston rod through the hydraulic oil in the rodless cavity of the hydraulic cylinder and the U-shaped oil guide pipe, and then transfers it to the other end piston; a body bracket is provided at the bottom of the body for supporting and protecting the body.

6. The intelligent hydraulic booster integrated control system according to claim 5 is characterized in that: An oil replenishing port and an exhaust hole are provided on the hydraulic cylinder end cover of the hydraulic cylinder. The oil replenishing port is used to replenish oil to the rodless cavity of the hydraulic cylinder via the motor oil pump; an electromagnetic valve is provided on the exhaust hole. The electromagnetic valve is used to connect the oil tank. The working time is set by the controller. The electromagnetic valve is opened regularly to discharge a part of the hydraulic oil in the rodless cavity of the hydraulic cylinder. The discharge amount is the internal volume of the hydraulic cylinder barrel corresponding to the difference between the maximum stroke and the minimum stroke of the displacement sensor provided on the hydraulic cylinder; When the hydraulic cylinder needs to change the oil, the solenoid valve will automatically open to return the hydraulic oil in the rodless chamber to the oil tank, shortening the operating stroke of the hydraulic cylinder piston. When the stroke is shortened to the minimum stroke value, the solenoid valve will automatically close and the motor oil pump will be turned on to replenish oil in the rodless chamber of the hydraulic cylinder. When the oil is replenished to the maximum stroke value of the hydraulic piston, the oil replenishment will stop.

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