High-pressure grouting system
By designing a high-pressure grouting system in parallel with multiple grouting pumps, an efficient and safe grouting process is achieved by combining the electromagnetic reversing valve and the proximity switch, and the problems of pulse, resonance and operation troubles in the prior art are solved.
Patent Information
- Application Number
- CN202421554956.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-03
- Publication Date
- 2025-03-28
- Estimated Expiration
- 2034-07-03
AI Technical Summary
The existing high-pressure grouting pumps have pulses and resonance phenomena during the grouting process, and the operation of adjusting the grouting pressure and flow rate is troublesome, which poses safety hazards.
A high-pressure grouting system is designed, including multiple grouting pumps, hydraulic pumps, motors, control devices and slurry collecting block devices. Through the coordination of the electromagnetic reversing valve and proximity switch, the precise control of the slurry suction and slurry discharge time of the grouting pump is achieved to avoid resonance.
It realizes low-cost, high-efficiency, energy-saving large flow and high-pressure slurry output, avoids pulse and resonance phenomena, and improves construction safety.
Smart Images
Figure CN222686815U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of grouting engineering, in particular to a high-pressure grouting system. Background Art
[0002] As one of the important equipment of high-pressure jet grouting method, high-pressure grouting pump is required to output the required pressure and flow to meet the needs of engineering construction. With the rapid development of rotary jet grouting construction technology, the geological conditions are changing, and the pressure and flow output by the pump are also required to be adjusted with the changes in the geological environment.
[0003] At present, most of the existing high-pressure grouting pumps at home and abroad use plunger technology, that is, a motor or engine is used to drive a crankshaft structure, and one or more plungers are hung on the crankshaft. The rotation of the crankshaft drives the plunger to reciprocate, thereby achieving the purpose of suction and discharge, and pressurizing the slurry medium.
[0004] The existing high-pressure grouting pump has the advantages of simple structure, convenient operation, large grouting volume and high grouting pressure. However, there are pulses during the grouting process. If sand is accidentally mixed into the slurry, it is very easy to damage components such as pistons, sealing rings, cylinder walls, etc. When the flow rate is large, a lot of power is required for grouting. When the grouting pressure and flow rate need to be adjusted, the pressure and flow rate of the slurry pumped out are adjusted by manually replacing plungers of different sizes, which is troublesome, time-consuming and labor-intensive.
[0005] In the prior art, attempts have been made to use multiple grouting pumps to perform grouting simultaneously to achieve high-pressure and high-flow grouting construction. However, when multiple grouting pumps perform grouting suction and discharge operations at the same time, resonance will occur, thus causing great safety hazards.
[0006] Therefore, providing a high-pressure grouting system with a simple structure, easy operation and effective avoidance of resonance has become an urgent problem to be solved in the industry. Utility Model Content
[0007] In view of the above problems, one of the purposes of the utility model is to provide a high-pressure grouting system, which can solve the problems of pulse and resonance, and improve the existing equipment to achieve low-cost, high-efficiency, energy-saving large-flow, high-pressure slurry output.
[0008] In order to achieve the above purpose, the utility model provides the following technical solutions:
[0009] The utility model provides a high-pressure grouting system, comprising a plurality of grouting pumps, a plurality of hydraulic pumps, a plurality of motors, a control device, an electrical device and a grouting block device, wherein:
[0010] Both ends of the oil cylinder of each grouting pump are respectively provided with proximity switches, the electrical device is connected in communication with each proximity switch to detect the state of each proximity switch, and the electrical device is connected in communication with the control device to transmit the opening and closing information of each proximity switch;
[0011] The oil cylinder of each grouting pump is connected to a hydraulic pump, each hydraulic pump is connected to a motor, the control device is electrically connected to each motor to control the working state of each motor, an electromagnetic reversing valve is provided between the connected hydraulic pump and the oil cylinder of the grouting pump to switch the flow direction of the hydraulic oil in the oil cylinder of the grouting pump, and the control device is communicatively connected to each electromagnetic reversing valve, so as to control and change the slurry suction or slurry discharge operation of each grouting pump according to the opening and closing information of each proximity switch;
[0012] The high-pressure slurry discharge port of each grouting pump is connected to the slurry inlet of the slurry collecting block device through a high-pressure slurry outlet pipe, so as to transmit the high-pressure slurry discharged by several grouting pumps to the slurry collecting block device, and perform high-pressure grouting through the grouting port of the slurry collecting block device.
[0013] Therefore, the working process of each grouting pump is as follows: the motor drives the hydraulic pump, the hydraulic pump drives the oil cylinder of the grouting pump, and the oil cylinder of the grouting pump reciprocates to drive the slurry cylinder of the grouting pump. The grouting pump drives the slurry cylinder by the oil cylinder. The grouting pump has a low-pressure inlet and a high-pressure slurry discharge port. The high-pressure grouting system of the utility model is equipped with multiple motors, hydraulic pumps and grouting pumps. Each motor drives the hydraulic pump respectively, which drives the oil cylinder of the grouting pump respectively through pipelines and valves. The oil cylinder moves back and forth, which can drive the axis of the slurry cylinder of the grouting pump to move together, realizing slurry suction and discharge. Finally, multiple high-pressure slurries converge to the slurry collecting block device, and the slurry collecting block device with pressure-maintaining capability performs high-pressure grouting.
[0014] In some embodiments, the slurry collecting block device includes: a slurry collecting valve body, the four walls of the slurry collecting valve body are provided with a plurality of slurry inlets, each of the slurry inlet is provided with a one-way valve, one of the slurry inlets is connected to a high-pressure slurry discharge port of the grouting pump through a high-pressure slurry outlet pipe, thereby, the one-way valve is used to ensure that the slurry can only be output into the slurry collecting block device and cannot flow back to the grouting pump; a slurry main line is provided inside the slurry collecting valve body, each of the slurry inlets is connected to the slurry main line through a pipeline, a slurry pressure sensor is provided at the top of the slurry main line, and the grouting port is arranged at the bottom of the slurry main line.
[0015] In some embodiments, the high-pressure grouting system includes 2 to 10 grouting pumps, 2 to 10 hydraulic pumps and 2 to 10 motors. Specifically, the high-pressure grouting system includes 2 grouting pumps, 2 hydraulic pumps and 2 motors. Specifically, the high-pressure grouting system includes 3 grouting pumps, 3 hydraulic pumps and 3 motors. Specifically, the high-pressure grouting system includes 4 grouting pumps, 4 hydraulic pumps and 4 motors. Specifically, the high-pressure grouting system includes 5 grouting pumps, 5 hydraulic pumps and 5 motors, specifically, the high-pressure grouting system includes 6 grouting pumps, 6 hydraulic pumps and 6 motors, specifically, the high-pressure grouting system includes 7 grouting pumps, 7 hydraulic pumps and 7 motors, specifically, the high-pressure grouting system includes 8 grouting pumps, 8 hydraulic pumps and 8 motors, specifically, the high-pressure grouting system includes 9 grouting pumps, 9 hydraulic pumps and 9 motors, specifically, the high-pressure grouting system includes 10 grouting pumps, 10 hydraulic pumps and 10 motors.
[0016] In some embodiments, the control device sets the response time of the electromagnetic reversing valve according to the frequency of the grouting pump.
[0017] In some embodiments, each of the hydraulic pumps is provided with an oil inlet pipeline and an oil return pipeline.
[0018] In some embodiments, the low-pressure slurry inlet of each grouting pump is connected to the same slurry storage barrel or different slurry storage barrels, so that the high-pressure grouting system of the utility model can realize high-pressure grouting of the same slurry and mixed grouting of different slurries. When performing mixed grouting of different slurries, the proportion of different slurries can be achieved by controlling the number of grouting machines performing grouting of different slurries.
[0019] In some embodiments, all of the hydraulic pumps are connected to the same oil tank, where the hydraulic oil is stored and goes back and forth from. The oil tank is provided with an oil temperature sensor and a liquid level sensor, and each of the hydraulic pumps is provided with a pressure sensor.
[0020] In some embodiments, the control device adjusts the number of grouting pumps involved in grouting by starting the number of the motors.
[0021] In some embodiments, the control device sets the grouting time of each grouting pump through the electromagnetic reversing valve.
[0022] The utility model has at least the following beneficial effects: (1) It has a wide range of applications and can be used in a variety of fields requiring high-pressure injection, such as grouting, rotary jetting, fracturing, and emulsion injection; (2) The utility model uses a plurality of hydraulic reciprocating cylinders in parallel to drive the piston to achieve slurry suction and discharge and achieve large-flow, high-pressure slurry output; (3) It uses modern electronic control technology to control the switching of the hydraulic cylinders and a new confluence design to solve problems such as pulses and resonance. Since the number of parallel connections can be from 2 to more than 10, low-cost, high-efficiency, and energy-saving large-flow, high-pressure slurry output can be achieved; (4) An electromagnetic reversing valve is used to set the slurry discharge time of each grouting pump, and the slurry discharge delay time is set in turn according to the number and frequency of the participating grouting pumps to avoid resonance, thereby greatly improving construction safety. BRIEF DESCRIPTION OF THE DRAWINGS
[0023] Figure 1 The utility model shows an assembly schematic diagram of a high-pressure grouting system;
[0024] Figure 2 The utility model shows a schematic diagram of the assembly of the slurry collecting block device;
[0025] Description of reference numerals:
[0026] 1- grouting pump, 2- hydraulic pump, 3- electrical device, 4- slurry collecting block device, 40- slurry collecting valve body, 41- slurry inlet, 42- one-way valve, 43- slurry main line, 44- slurry pressure sensor, 45- grouting port. DETAILED DESCRIPTION
[0027] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0028] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the system or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first", "second", etc., are used to define components, only for the convenience of distinguishing the above components, and unless otherwise stated, the above terms have no special meaning and cannot be understood as indicating or implying relative importance.
[0029] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0030] As a non-limiting embodiment, Figure 1 As shown, the utility model provides a high-pressure grouting system, including six grouting pumps 1, six hydraulic pumps 2, six motors (not shown in the figure), a control device (not shown in the figure), an electrical device 3 and a slurry collecting block device 4, wherein proximity switches are respectively provided at both ends of the oil cylinder of each grouting pump 1, the electrical device is communicatively connected with each proximity switch, so that the state of each proximity switch can be detected, and the electrical device 3 is communicatively connected with the control device, so that the opening and closing information of each proximity switch can be transmitted to the control device.
[0031] The oil cylinder of each grouting pump 1 is connected to a hydraulic pump 2, and each hydraulic pump 2 is connected to a motor. The control device is electrically connected to each motor to control the working state of each motor. An electromagnetic reversing valve is arranged between the connected hydraulic pump 2 and the oil cylinder of the grouting pump 1, so that the electromagnetic reversing valve is used to switch the flow direction of the hydraulic oil in the oil cylinder of the grouting pump. The control device is communicatively connected to each electromagnetic reversing valve to control and change the slurry suction or discharge operation of each grouting pump according to the opening and closing information of each proximity switch.
[0032] The high-pressure slurry discharge port (not shown in the figure) of each grouting pump 1 is connected to the slurry inlet of the slurry collecting block device 4 through a high-pressure slurry outlet pipe, so that the high-pressure slurry discharged by the six grouting pumps is transmitted to the slurry collecting block device 4, and high-pressure grouting is carried out through the grouting port of the slurry collecting block device 4.
[0033] Therefore, the working process of each grouting pump is as follows: the motor drives the hydraulic pump, the hydraulic pump drives the oil cylinder of the grouting pump, and the oil cylinder of the grouting pump reciprocates to drive the slurry cylinder of the grouting pump. The grouting pump drives the slurry cylinder by the oil cylinder. The grouting pump has a low-pressure inlet and a high-pressure slurry discharge port. The high-pressure grouting system of the utility model is equipped with six motors, six hydraulic pumps and six grouting pumps. The six motors drive six hydraulic pumps respectively, which drive the oil cylinders of the six grouting pumps respectively through pipelines and valves. The oil cylinder moves back and forth, which can drive the shaft of the slurry cylinder of the grouting pump to move together, realizing slurry suction and slurry discharge. Finally, the six high-pressure slurries converge to the slurry collecting block device, and the slurry collecting block device with pressure-maintaining capability performs high-pressure grouting.
[0034] As another non-limiting embodiment, Figure 2 As shown, the slurry collecting block device 4 includes: a slurry collecting valve body 40, six slurry inlets 41 (three of which can be seen in the figure) are arranged on the four walls of the slurry collecting valve body, each slurry inlet 41 is provided with a one-way valve 42, and one slurry inlet 41 is connected to a high-pressure slurry discharge port of a grouting pump 1 through a high-pressure slurry outlet pipe, thereby, the one-way valve 42 is used to ensure that the slurry can only be output into the slurry collecting block device 4, and cannot flow back to the grouting pump. A slurry main line 43 is arranged inside the slurry collecting valve body 40, each slurry inlet 41 is connected to the slurry main line 43 through a pipeline, a slurry pressure sensor 44 is arranged at the top of the slurry main line 43, and a grouting port 45 is arranged at the bottom of the slurry main line 43.
[0035] It can be seen that the utility model connects the slurry of the six-way grouting pump to the slurry collecting block device 4 through six groups of high-pressure slurry outlet pipes, the electrical device detects the state of the proximity switch, and controls the reversing operation of each hydraulic cylinder through the control device, thereby achieving stable flow output and pressure output of the slurry. In actual work, by starting the appropriate number of motors, the number of hydraulic pumps working is adjusted, the number of grouting pumps participating in the work is controlled, and the appropriate function is achieved.
[0036] In this non-limiting embodiment, the electromagnetic reversing valve sets the delay time according to the frequency of the grouting pump, the proximity switch serves as a detection device, and the electromagnetic reversing valve serves as an execution device.
[0037] Therefore, the information high-pressure grouting system of the utility model connects the suction and discharge ports of multiple grouting pumps with high-pressure properties in parallel, and the discharge ports finally flow back into one path through pipelines, so as to achieve a larger flow rate of slurry output. When there is no convergence, it can be used as multiple high-pressure grouting pumps. It is flexible and applicable to a wide range of occasions, and does not require any modification to existing equipment. At the same time, the cooperation of proximity switches and electromagnetic reversing valves can also achieve the effect of avoiding resonance, greatly improving construction safety.
[0038] It can be seen that the utility model solves the resonance problem by controlling the time and sequence of slurry suction and discharge of each grouting pump. For example, the frequency of the high-pressure grouting pump is 30 times / minute, and each pump needs 2 seconds to suck and discharge slurry once. The program is set to control the slurry discharge time of each pump to an interval of 2 seconds / 6. For example, when the solenoid valve of pump No. 1 changes direction to discharge slurry, pump No. 2 will delay 2 / 6 seconds before discharging slurry, pump No. 3 will delay 4 / 6 seconds before discharging slurry, pump No. 4 will delay 6 / 6 seconds before discharging slurry, pump No. 5 will delay 8 / 6 seconds before discharging slurry, and pump No. 6 will delay 10 / 6 seconds before discharging slurry, and so on. The discharge cycle of 6 pumps is completed in 2 seconds, and the cycle is repeated, thereby achieving asynchronous discharge time and reducing the occurrence of resonance.
[0039] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the utility model.
Claims
1. A high pressure grouting system, characterized in that: It includes several grouting pumps, several hydraulic pumps, several motors, control devices, electrical devices and grouting block devices, among which: Both ends of the oil cylinder of each grouting pump are respectively provided with proximity switches, the electrical device is connected in communication with each proximity switch to detect the state of each proximity switch, and the electrical device is connected in communication with the control device to transmit the opening and closing information of each proximity switch; The oil cylinder of each grouting pump is connected to a hydraulic pump, each hydraulic pump is connected to a motor, the control device is electrically connected to each motor to control the working state of each motor, an electromagnetic reversing valve is provided between the connected hydraulic pump and the oil cylinder of the grouting pump to switch the flow direction of the hydraulic oil in the oil cylinder of the grouting pump, and the control device is communicatively connected to each electromagnetic reversing valve, so as to control and change the slurry suction or slurry discharge operation of each grouting pump according to the opening and closing information of each proximity switch; The high-pressure slurry discharge port of each grouting pump is connected to the slurry inlet of the slurry collecting block device through a high-pressure slurry outlet pipe, so as to transmit the high-pressure slurry discharged by several grouting pumps to the slurry collecting block device, and perform high-pressure grouting through the grouting port of the slurry collecting block.
2. The high pressure grouting system according to claim 1, characterized in that: The slurry collecting block device includes: a slurry collecting valve body, the four walls of the slurry collecting valve body are provided with a plurality of slurry inlets, each of the slurry inlet is provided with a one-way valve, one of the slurry inlets is connected with a high-pressure slurry discharge port of the grouting pump through a high-pressure slurry outlet pipe, a slurry main line is provided inside the slurry collecting valve body, each of the slurry inlets is connected with the slurry main line through a pipeline, a slurry pressure sensor is provided at the top of the slurry main line, and the grouting port is provided at the bottom of the slurry main line.
3. The high pressure grouting system according to claim 1, characterized in that: The high-pressure grouting system comprises 2 to 10 grouting pumps, 2 to 10 hydraulic pumps and 2 to 10 motors.
4. The high pressure grouting system according to claim 1, characterized in that: The control device sets the response time of the electromagnetic reversing valve according to the frequency of the grouting pump.
5. The high pressure grouting system according to claim 1, characterized in that: The low-pressure slurry inlet of each grouting pump is respectively connected to the same slurry storage barrel or different slurry storage barrels.
6. The high pressure grouting system according to claim 1, characterized in that: All the hydraulic pumps are connected to the same oil tank, on which an oil temperature sensor and a liquid level sensor are arranged, and each of the hydraulic pumps is provided with a pressure sensor.