Double-wire intelligent integrated metering control box

Abstract

The invention belongs to the technical field of lubricating grease separation systems, and discloses a double-line intelligent integrated metering control box which comprises an oil collection block installed on a bottom plate in a stainless steel protection box, and a two-position three-way electric reversing valve A, a one-way throttle valve A, a flow meter A, a two-position three-way electric reversing valve B, a one-way throttle valve B and a flow meter B are integrally installed on the oil collection block; a port P of the two-position three-way electric reversing valve A and a port P of the two-position three-way electric reversing valve B are jointly connected with an oil supply pipe P; a port R of the two-position three-way electric reversing valve A and a port R of the two-position three-way electric reversing valve B are jointly connected with an oil return pipe R; oil outlet pressure measuring ports of the two two-position three-way electric reversing valves are respectively provided with a pressure sensor. An electrical control module is mounted on a box door of the stainless steel protection box; and a pluggable electrical coupler is mounted on the control box. The whole lubricating system is more flexible in oil supply, whether the distributor in the area where the metering control box supplies oil leaks or is blocked or not is monitored in real time, and the overall manufacturing cost is low.

Description

Technical Field

[0001] The invention belongs to the technical field of grease bleeding systems, and particularly relates to a two-line intelligent integrated metering control box. Background Technique

[0002] The two-line lubrication system is a most commonly used centralized lubrication system, which is still widely applied to equipment in various industries at present. The conventional two-line lubrication system has the advantages of simple system working principle, convenient system expansion, and the normal oil supply of other lubrication points in the system is not affected by the oil supply failure of a single lubrication point. However, it also has the following disadvantages: 1. The oil supply cycles of all distributors in the system are the same, and different oil supply cycles cannot be set for each distributor according to the working conditions of the lubrication points; 2. There is no electrical signal feedback for the operation of the distributor. Therefore, whether the distributor supplies oil normally needs to be confirmed by on-site inspection of the staff, which is time-consuming, laborious, and has great potential safety hazards. In many cases, problems with the lubrication system are not discovered until the equipment lubrication points fail due to lack of oil. And in many working conditions, the distributors are installed in harsh environments such as high temperature and high humidity, such as continuous casting and rolling mills, and it is impossible for personnel to enter for inspection when the equipment is working.

[0003] Although the current intelligent lubrication system can well solve the above problems, since an actuator and a detection element need to be set for each point of the intelligent lubrication system to achieve the purpose of single-point control and detection, the cost of the lubrication system is very high, and the requirements for the quality of personnel for system maintenance are also relatively high.

[0004] A two-line intelligent oil tank disclosed in the related reference document CN219160100U. Its combined two-line distributor includes a supply body, an intermediate lower body, the same number of upper distributors as the intermediate lower body, and an end body. The upper distributors are fixed on the intermediate lower body with screws. The distributor body of the upper distributor is provided with an oil supply piston cavity and a control piston cavity. The oil supply piston is installed in the oil supply piston cavity of the distributor body. A magnetic steel is installed at the right end of the oil supply piston. The magnetic switch is installed in the screw hole at the right end of the oil supply piston cavity of the distributor body. The control piston is installed in the control piston cavity of the distributor body and is sealed at both ends with screw plugs. The intermediate lower body is provided with an oil outlet and an oil inlet. It adopts a modular structure and can flexibly increase or decrease the number of distributor oil outlets, but the oil supply to the lubrication system is not very flexible. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide a two-line intelligent integrated metering control box that makes the oil supply of the entire lubrication system more flexible, can monitor in real time whether the distributors in the area supplied by the metering control box are leaking or blocked, and the overall cost is much lower than that of the intelligent lubrication system.

[0006] To solve the above technical problems, the present invention provides a dual-line intelligent integrated metering control box, which includes an oil collecting block installed on the inner bottom plate of a stainless steel protection box. An electro-pneumatic two-position three-way valve A, a one-way throttle valve A, a flowmeter A, an electro-pneumatic two-position three-way valve B, a one-way throttle valve B, and a flowmeter B are integrally installed on the oil collecting block. The P ports of the electro-pneumatic two-position three-way valve A and the electro-pneumatic two-position three-way valve B are jointly connected to the supply oil pipe P. The R ports of the electro-pneumatic two-position three-way valve A and the electro-pneumatic two-position three-way valve B are jointly connected to the return oil pipe R. A pressure sensor A is installed on the oil outlet pressure measuring port of the electro-pneumatic two-position three-way valve A, and a pressure sensor B is installed on the oil outlet pressure measuring port of the electro-pneumatic two-position three-way valve B. An electrical control module is installed on the door of the stainless steel protection box. A pluggable electrical connector is fixed on the bottom side plate of the stainless steel protection box.

[0007] By adopting the above technical solution, the control box is equipped with dual electro-pneumatic two-position three-way valves and pressure sensors. The original dual-line pipeline layout of the system can remain unchanged. A dual-line intelligent integrated metering control box is added to the main pipe leading to each lubrication sub-equipment, realizing zonal control of different lubrication sub-equipments. The oil supply interval time and the number of oil supply times for each zone can be set separately, making the oil supply of the entire lubrication system more flexible.

[0008] Preferably, a module protection cover is provided over the electrical control module. The module protection cover is installed on the box door, and an openable transparent cover is provided on the module protection cover.

[0009] By adopting the above technical solution, the module protection cover covers the electrical control module. The display operation screen can be viewed through the transparent cover, and the display operation screen can be operated by lifting the transparent cover.

[0010] Preferably, a flowmeter A and a one-way throttle valve A are installed in parallel behind the C port of the electro-pneumatic two-position three-way valve A. A pressure sensor A is installed on this C port. After the flowmeter A and the one-way throttle valve A are connected in parallel, they are connected to the main pipeline A. The P port of the electro-pneumatic two-position three-way valve A is connected to the supply oil pipe P, and the R port is connected to the return oil pipe R. The pressure sensor A is electrically connected to the electrical control module.

[0011] By adopting the above technical solution, the flowmeter A measures the lubricant supplied to the main pipeline A, and the cumulative flow and the single flow required for pressurizing the main pipeline A once are displayed on the electrical control module. Through the coordinated operation of the flowmeter A, the pressure sensor A, the electro-pneumatic two-position three-way valve A, and the electrical control module 4, intelligent monitoring and fault diagnosis of the dual-line lubrication system are realized, quickly distinguishing leakage and blockage, reducing the manual troubleshooting time, and improving the maintenance efficiency.

[0012] Preferably, a flowmeter B and a one-way throttle valve B are installed in parallel behind the C port of the two-position three-way electric reversing valve B, and a pressure sensor B is installed on the C port; the flowmeter B and the one-way throttle valve B are connected in parallel and then connected to the main pipeline B; the R port of the two-position three-way electric reversing valve B is connected to the return oil pipe R, and the P port is connected to the oil supply pipe P; the pressure sensor B is electrically connected to the electrical control module.

[0013] By adopting the above technical solution, the flowmeter B measures the lubricant supplied to the main pipeline B, and displays the cumulative flow and the single flow required for pressurizing the main pipeline B once on the electrical control module. Through the coordinated work of the flowmeter B, the pressure sensor B, the two-position three-way electric reversing valve B and the electrical control module, the intelligent monitoring and fault diagnosis of the double-line lubrication system are realized, the leakage and blockage can be quickly distinguished, the manual troubleshooting time is reduced, and the maintenance efficiency is improved.

[0014] Preferably, the two-position three-way electric reversing valve A, the two-position three-way electric reversing valve B and the electrical control module are electrically connected.

[0015] By adopting the above technical solution, the two-position three-way electric reversing valves A and B are electrically connected through the electrical control module, realizing the automatic control of the fluid flow direction, with rapid response, simple operation, and improved automation level of the system.

[0016] Preferably, the flowmeter A, the flowmeter B and the electrical control module are electrically connected.

[0017] By adopting the above technical solution, the electrical control module analyzes the flowmeter data in real time. When abnormal flow is detected, such as sudden drop in flow, overlimit, etc., the alarm mechanism is immediately triggered.

[0018] Preferably, the communication between the electrical control module and the external main control cabinet is in the powerbus communication mode.

[0019] By adopting the above technical solution, the electrical control module and the external main control cabinet adopt the powerbus communication mode, which is mature, reliable and has simple wiring.

[0020] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. The present invention is equipped with a double-line two-position three-way electric reversing valve and a pressure sensor. The original double-line pipeline layout of the system can remain unchanged. A double-line intelligent integrated metering control box is added to the main pipe leading to each lubrication sub-equipment, realizing the zoning control of different lubrication sub-equipments. The oil supply interval time and the number of oil supply times for each zone can be set separately, making the oil supply of the entire lubrication system more flexible.

[0021] 2. The flowmeter of the present invention measures the lubricant supplied to the main pipeline and displays the cumulative flow rate and the single - time flow rate required for pressurizing the main pipeline once on the electrical control module. Through the coordinated operation of the flowmeter, pressure sensor, two - position three - way electric reversing valve, and electrical control module, the intelligent monitoring and fault diagnosis of the dual - line lubrication system are realized, quickly distinguishing leakage and blockage, reducing the manual troubleshooting time, and improving the maintenance efficiency.

[0022] 3. The electrical interface of the present invention adopts a pluggable electrical connector. When upgrading the original dual - line lubrication system, the main control electric box in the corresponding area of the main pipeline is changed to this dual - line intelligent integrated metering control box, and only electrical wiring is required. The operation and maintenance of the system have little change compared with the original system, and the original maintenance personnel can quickly get started. There is no need to separately configure actuators for the distributors at each lubrication point, and the overall cost is much lower than that of the intelligent lubrication system. Therefore, it has a good market prospect. Brief Description of the Drawings

[0023] Figure 1 is a schematic diagram of the present invention with the cabinet door removed; Figure 2 is a sectional view of the present invention; Figure 3 is a schematic diagram of the principle of the present invention; Figure 4 is a schematic diagram of two two - position three - way electric reversing valves in parallel of the present invention.

[0024] Figure number: 1. High - pressure ball valve, 2. Return oil pipe R, 3. Supply oil pipe P, 4. Electrical control module, 5. Two - position three - way electric reversing valve A, 6. Pressure sensor A, 7. One - way throttle valve A, 8. Flowmeter A, 9. Main pipeline A, 10. One - way throttle valve B, 11. Flowmeter B, 12. Main pipeline B, 13. Pressure sensor B, 14. Two - position three - way electric reversing valve B, 15. Module protective cover, 16. Stainless - steel protective box, 17. Oil collecting block, 18. Pluggable electrical connector. Detailed Embodiment

[0025] As Figure 1 、 2 shown, a dual - line intelligent integrated metering control box, the oil collecting block 17 is fixedly installed on the inner bottom plate of the stainless - steel protective box 16. The two - position three - way electric reversing valve A5, one - way throttle valve A7, flowmeter A8, two - position three - way electric reversing valve B14, one - way throttle valve B10, and flowmeter B11 are all plate - type structures and are fixedly installed on the oil collecting block 17. The plate - type installation is adopted, with a compact structure, few leakage points, and convenient repair and replacement. The oil ports of each component inside the oil collecting block 17 are connected through flow - channel holes. As Figure 4As shown in the figure, the P ports of the two-position three-way electric changeover valve A5 and the two-position three-way electric changeover valve B14 are jointly connected to the oil supply pipe P3; the R ports of the two-position three-way electric changeover valve A5 and the two-position three-way electric changeover valve B14 are jointly connected to the return pipe R. A pressure measuring port communicating with the oil outlet C is provided on the two-position three-way electric changeover valve A5, and a pressure sensor A6 is installed. A pressure measuring port communicating with the oil outlet C is provided on the two-position three-way electric changeover valve B14, and a pressure sensor B13 is installed. The electrical control module 4 is installed on the door of the stainless steel protection box 16, and the module protection cover 15 is installed on the outer side of the door of the stainless steel protection box 16 to cover the display operation screen of the electrical control module 4. The module protection cover 15 is provided with an openable transparent cover. The display operation screen picture can be viewed through the transparent cover, and the display operation screen can be operated by lifting the transparent cover. The whole application of the present invention is integrally installed in the protection box, with good environmental adaptability, and can be used in open-air, dusty and other harsh working conditions. It is equipped with a double-way two-position three-way electric changeover valve and a pressure sensor, and the original double-line pipeline layout of the system can remain unchanged. A double-line intelligent integrated metering control box is added to the main pipe leading to each lubrication sub-equipment to realize zoning control of different lubrication sub-equipments. The oil supply interval time and the number of oil supply times of each zone can be set separately, making the oil supply of the whole lubrication system more flexible.

[0026] The two-position three-way electric changeover valve A5 and the two-position three-way electric changeover valve B14 both adopt an electric linear push rod motor as the actuator, with simple structure, large thrust and good reliability. When the electric linear push rod motor is energized forward, the push rod drives the valve core to extend, and the P port of the valve is connected to the C port. When the electric linear push rod motor is energized reversely, the push rod drives the valve core to retract, and the R port of the valve is connected to the C port.

[0027] The flow meters A8 and B11 are volumetric metering. The flow meters are provided with signal sending switches. Every time 1 ml of medium passes through, the signal sending switch emits 1 pulse signal.

[0028] An orderly high-pressure ball valve 1 is installed at the entrance of the return pipe R2 and is connected to the return oil port on the oil collecting block 17 through a connecting pipe. A high-pressure ball valve 1 is installed at the entrance of the oil supply pipe P3 and is connected to the oil supply port on the oil collecting block 17 through a connecting pipe. If the double-line intelligent integrated metering control box needs to be repaired online, the two high-pressure ball valves 1 can be directly closed, which will not affect the normal operation of other double-line intelligent integrated metering control boxes in the system.

[0029] The pluggable electrical connector 18 is fixedly installed on the bottom side plate of the stainless steel protective box 16. The external wiring of the electrical control module 4 is led to the fixed seat at one end of the pluggable electrical connector 18, and the control line connected from the main control cabinet is connected to the plug end of the pluggable electrical connector 18. When replacing the double-line intelligent integrated metering control box, there is no need to disassemble the circuit. Just unplug the plug of the pluggable electrical connector 18. After replacing the new double-line intelligent integrated metering control box, connect the plug of the pluggable electrical connector 18 to the fixed seat of the pluggable electrical connector 18 of the newly replaced control box, which is convenient for maintenance. When replacing the double-line intelligent integrated metering control box, there is no need to disassemble the circuit and no professional electrical personnel are required to participate.

[0030] As Figure 2 shown, the C port of the two-position three-way electric reversing valve A5 is installed with a flowmeter A8 and a one-way throttle valve A7 in parallel through a pipeline, and a pressure sensor A6 is installed at the pressure measuring port communicating with the oil outlet C; the flowmeter A8 and the one-way throttle valve A7 are connected in parallel and then communicated with the main pipeline A9; the P port of the two-position three-way electric reversing valve A5 is communicated with the oil supply pipe P3, and the R port is communicated with the return oil pipe R2; the pressure sensor A6 is electrically connected to the electrical control module 4. The flowmeter A8 measures the lubricant supplied to the main pipeline A9, and displays the cumulative flow and the single flow required for pressurizing the main pipeline A9 once on the electrical control module 4. Through the coordinated work of the flowmeter A8, the pressure sensor A6, the two-position three-way electric reversing valve A5 and the electrical control module 4, the intelligent monitoring and fault diagnosis of the double-line lubrication system are realized, the leakage and blockage are quickly distinguished, the manual troubleshooting time is reduced, and the maintenance efficiency is improved.

[0031] The C port of the two-position three-way electric reversing valve B14 is installed with a flowmeter B11 and a one-way throttle valve B10 in parallel through a pipeline, and a pressure sensor B13 is installed at the pressure measuring port communicating with the oil outlet C; the flowmeter B11 and the one-way throttle valve B10 are connected in parallel and then communicated with the main pipeline B12; the R port of the two-position three-way electric reversing valve B14 is communicated with the return oil pipe R2, and the P port is communicated with the oil supply pipe P3; the pressure sensor B13 is electrically connected to the electrical control module 4. The flowmeter B11 measures the lubricant supplied to the main pipeline B12, and displays the cumulative flow and the single flow required for pressurizing the main pipeline B12 once on the electrical control module 4. Through the coordinated work of the flowmeter B11, the pressure sensor B13, the two-position three-way electric reversing valve B14 and the electrical control module 4, the intelligent monitoring and fault diagnosis of the double-line lubrication system are realized, the leakage and blockage are quickly distinguished, the manual troubleshooting time is reduced, and the maintenance efficiency is improved.

[0032] The two-position three-way electric reversing valve A5, the two-position three-way electric reversing valve B14 and the electrical control module 4 are electrically connected. Through the electrical control module 4, the two-position three-way electric reversing valve A5 and B14 are electrically connected to realize the automatic control of the fluid flow direction, with rapid response, simple operation and improved automation level of the system.

[0033] The flowmeter A8, the flowmeter B11 and the electrical control module 4 are electrically connected. The electrical control module 4 performs real-time analysis on the flowmeter data. When abnormal flow is detected, such as sudden flow drop, overlimit, etc., the alarm mechanism is immediately triggered.

[0034] Working principle: Each double-wire intelligent integrated metering control box is connected to the main control cabinet of the double-wire intelligent lubrication system through a bus control cable. The communication adopts the PowerBus communication method. The lubrication pumps in the lubrication system adopt the method of maintaining pressure for oil supply. The system operation can select "manual mode" and "automatic mode". Manual mode: Press the "Start" button on the display operation screen of the electrical control module 4 of the dual-line intelligent integrated metering control box. The electric linear push rod motor of the three-position two-way solenoid valve A5 is energized in the forward direction, and the push rod drives the valve core to extend. The P port and the C port of the valve are connected. The medium in the supply oil pipe P3 enters the flowmeter A8 through the three-position two-way solenoid valve A5. After being metered by the flowmeter A8, the medium enters the main pipeline A9 and is supplied to the dual-line distributor connected at the rear (at this time, the push rod of the electric linear push rod motor of the three-position two-way solenoid valve B14 is in the retracted state, the R port and the C port of the valve are connected, and the main pipeline B12 is connected to the return oil pipe R2 through the one-way valve inside the one-way throttle valve B10 and the three-position two-way solenoid valve B14 for unloading). When all the dual-line distributors at the rear act, the pressure of the supply oil pipe P3 continues to rise. When the pressure reaches the set pressure of the pressure sensor A6, the electrical control module 4 issues an instruction. The electric linear push rod motor of the three-position two-way solenoid valve A5 is energized in the reverse direction, and the push rod drives the valve core to retract. The R port and the C port of the valve are connected. The main pipeline A9 is connected to the return oil pipe R2 through the one-way valve inside the one-way throttle valve A7 and the three-position two-way solenoid valve A5 for unloading. At the same time, the electric linear push rod motor of the three-position two-way solenoid valve B14 is energized in the forward direction, and the push rod drives the valve core to extend. The P port and the C port of the valve are connected. The medium in the supply oil pipe P3 enters the flowmeter B11 through the three-position two-way solenoid valve B14. After being metered by the flowmeter B11, the medium enters the main pipeline B12 and is supplied to the dual-line distributor connected at the rear. When all the dual-line distributors at the rear act, the pressure of the supply oil pipe P3 continues to rise. When the pressure reaches the set pressure of the pressure sensor B13, the electrical control module 4 issues an instruction. The electric linear push rod motor of the three-position two-way solenoid valve B14 is energized in the reverse direction, and the push rod drives the valve core to retract. At the same time, the electric linear push rod motor of the three-position two-way solenoid valve A5 is energized in the forward direction, and the push rod drives the valve core to extend. The system repeats the above process, and the main pipelines A9 and B12 supply oil alternately until the "Stop" lubrication button is pressed on the display operation screen of the electrical control module 4. The electrical control module 4 controls the electric linear push rod motors of the three-position two-way solenoid valves A5 and B14 to be in the retracted state (both the main pipelines A9 and B12 are connected to the return oil pipe R2 for unloading). This mode is used during system debugging and maintenance.

[0035] Automatic mode: Parameters such as "oil supply interval time", "oil supply monitoring time", and "number of cycles" of each dual-line intelligent integrated metering control box are preset on the main control cabinet of the lubrication system. When a certain dual-line intelligent integrated metering control box needs to supply oil after the set oil supply interval time, the main control cabinet issues a lubrication instruction. After the electrical control module 4 on the corresponding dual-line intelligent integrated metering control box receives the instruction, it controls the two-position three-way solenoid valve A5. The electric linear push rod motor is energized forward, and the push rod drives the valve core to extend, supplying oil to the main pipeline A9 (the push rod of the electric linear push rod motor of the two-position three-way solenoid valve B14 is in the retracted state, and the main pipeline B12 discharges to the return pipe R2). When all the dual-line distributors at the rear have operated, the pressure of the supply pipe P3 continues to rise. When the pressure reaches the set pressure of the pressure sensor A6, the electrical control module 4 issues an instruction, and the electric linear push rod motor of the two-position three-way solenoid valve A5 is energized reversely, and the push rod drives the valve core to retract, connecting the main pipeline A9 to the return pipe R2 for unloading. At the same time, the electric linear push rod motor of the two-position three-way solenoid valve B14 is energized forward, and the push rod drives the valve core to extend, supplying oil to the main pipeline B12. When all the dual-line distributors at the rear have operated, the pressure of the supply pipe P3 continues to rise. When the pressure reaches the set pressure of the pressure sensor B13, the system counts 1 oil supply time. The system repeats the above process, and the main pipelines A9 and B12 supply oil alternately. When the number of oil supply times reaches the preset number of cycles, this oil supply is completed. The electrical control module 4 controls the electric linear push rod motors of the two-position three-way solenoid valve A5 and the two-position three-way solenoid valve B14 to be in the retracted state (both the main pipeline A9 and the main pipeline B12 are connected to the return pipe R2 for unloading), and the system enters the interval timing. The system monitors the oil supply time of each dual-line intelligent integrated metering control box. The monitoring time is 1.5 times the time required for the dual-line intelligent integrated metering control box to work normally once. If the dual-line intelligent integrated metering control box fails to complete the oil supply within the set monitoring time, the main control cabinet issues a "oil supply delay" fault signal for this dual-line intelligent integrated metering control box.

[0036] When the dual-line intelligent integrated metering control box is working, the flowmeter A8 will measure the lubricant supplied to the main pipeline A9 and display the cumulative flow and the single flow required for pressurizing the main pipeline A9 once on the electrical control module 4. We can set an alarm value greater than this flow value according to this flow value. When the single flow recorded by the flowmeter reaches this value, the system issues a "leakage in main pipeline A" alarm, prompting the staff to check whether there is a leakage in the pipeline or distributor at the rear of the main pipeline A. Another alarm value less than this flow is set. When the single flow recorded by the flowmeter does not reach this value, the system issues a "blockage in main pipeline A" alarm, prompting the staff to check whether the pipeline at the rear of the main pipeline A is blocked or whether some oil supply points of the dual-line distributor do not supply oil.

[0037] Similarly, when the dual-line intelligent integrated metering control box is working, the flowmeter B11 will measure the lubricant supplied to the main pipeline B12, and display the cumulative flow and the single flow required for pressurizing the main pipeline B12 once on the electrical control module 4. We can set another alarm value greater than this flow value. When the single flow recorded by the flowmeter reaches this value, the system issues an alarm of "Leakage in the main pipeline B", prompting the staff to check whether there is a leakage in the pipeline or distributor at the rear of the main pipeline B. Set another alarm value less than this flow value. When the single flow recorded by the flowmeter does not reach this value, the system issues an alarm of "Blockage in the main pipeline B", prompting the staff to check whether the pipeline at the rear of the main pipeline B is blocked or whether some oil supply points of the dual-line distributor do not supply oil.

[0038] During normal operation, the throttle valves on the one-way throttle valve A7 and the one-way throttle valve B10 are in the closed state. If the flowmeter A8 or the flowmeter B11 fails during operation, to ensure the normal oil supply to the equipment at the rear of the dual-line intelligent integrated metering control box, the one-way throttle valve A7 and the one-way throttle valve B10 can be temporarily opened to directly connect the inlet and outlet ports of the flowmeter.

[0039] The customized electrical control module 4 with a screen adopts the powerbus communication method, intuitively displays the operating status of the dual-line intelligent integrated metering control box on-site, and can be manually operated and tested on-site. The communication between the electrical control module (4) and the external main control cabinet is a powerbus communication connection, realizing the sharing of a two-core bus for signals and power supply. Due to its non-polar wiring and arbitrary topology performance, it is mature, reliable, and the wiring is simple, avoiding wiring errors during construction, thus simplifying the construction design. The electrical control module 4 monitors the entire process. In addition to displaying the various parameters and fault alarm information mentioned above, it also monitors the temperature inside the dual-line intelligent integrated metering control box, the working current of the two linear push rod motors, etc. throughout the process, and issues corresponding fault prompts when the set value is exceeded, with a high degree of intelligence.

[0040] For a dual-line intelligent integrated metering control box in this application, the original dual-line pipeline layout of the system can remain unchanged. A dual-line intelligent integrated metering control box is added to the main pipe leading to each lubrication sub-equipment to achieve zonal control over different lubrication sub-equipments (the oil supply interval time and the number of oil supply times for each zone can be set separately), and the oil supply amounts of the two supply oil pipes in each zone are monitored in real time to monitor whether there is oil leakage or blockage in the pipelines and dual-line distributors in the area supplied by the metering control box. Through this application, the problems existing in the traditional dual-line lubrication system are effectively solved. Moreover, it is relatively convenient to transform the original dual-line lubrication system: the pump station and the main pipeline can both be reused, the main electric control box of the old distributor is upgraded, and this dual-line intelligent integrated metering control box is added in the corresponding area of the main pipeline. After electrical wiring, it can be done. The operation and maintenance of the system have not changed much compared with the original system, and the original maintenance personnel can quickly get started. There is no need to separately configure actuators for the distributors at each lubrication point, and the overall cost is much lower than that of the intelligent lubrication system. Therefore, it has a good market prospect.

[0041] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A double-line intelligent integrated metering control box, comprising an oil collecting block (17) installed on the inner bottom plate of a stainless steel protection box (16), characterized in that: An electric two-position three-way directional control valve A (5), a one-way throttle valve A (7), a flowmeter A (8), an electric two-position three-way directional control valve B (14), a one-way throttle valve B (10) and a flowmeter B (11) are integrally installed on the oil collecting block (17); the P ports of the electric two-position three-way directional control valve A (5) and the electric two-position three-way directional control valve B (14) are connected to the supply oil pipe P (3); the R ports of the electric two-position three-way directional control valve A (5) and the electric two-position three-way directional control valve B (14) are jointly connected to the return oil pipe R (2); a pressure sensor A (6) is installed on the oil outlet pressure measuring port of the electric two-position three-way directional control valve A (5), and a pressure sensor B (13) is installed on the oil outlet pressure measuring port of the electric two-position three-way directional control valve B (14); an electrical control module (4) is installed on the door of the stainless steel protective box (16); a pluggable electrical connector (18) is fixed on the bottom side plate of the stainless steel protective box (16).

2. The dual-line intelligent integrated metering control box according to claim 1, wherein: A module protective cover (15) is provided over the electrical control module (4), the module protective cover (15) is installed on the door, and an openable transparent cover is provided on the module protective cover (15).

3. The dual-line intelligent integrated metering control box according to claim 1, characterized in that: The flowmeter A (8) and the one-way throttle valve A (7) are installed in parallel behind the C port of the electric two-position three-way directional control valve A (5), and the pressure sensor A (6) is installed on this C port; after the flowmeter A (8) and the one-way throttle valve A (7) are connected in parallel, they are communicated with the main pipeline A (9); the P port of the electric two-position three-way directional control valve A (5) is communicated with the supply oil pipe P (3), and the R port is communicated with the return oil pipe R (2); the pressure sensor A (6) is electrically connected to the electrical control module (4).

4. A dual-line intelligent integrated metering control box according to claim 1, characterized in that: The flowmeter B (11) and the one-way throttle valve B (10) are installed in parallel behind the C port of the electric two-position three-way directional control valve B (14), and the pressure sensor B (13) is installed on this C port; after the flowmeter B (11) and the one-way throttle valve B (10) are connected in parallel, they are communicated with the main pipeline B (12); the R port of the electric two-position three-way directional control valve B (14) is communicated with the return oil pipe R (2), and the P port is communicated with the supply oil pipe P (3); the pressure sensor B (13) is electrically connected to the electrical control module (4).

5. A dual-line intelligent integrated metering control box according to claim 1, characterized in that: The electric two-position three-way directional control valve A (5), the electric two-position three-way directional control valve B (14) and the electrical control module (4) are electrically connected.

6. The dual-line intelligent integrated metering control box according to claim 1, characterized in that: The flowmeter A (8), the flowmeter B (11) and the electrical control module (4) are electrically connected.

7. A dual-line intelligent integrated metering control box according to any one of claims 1-6, characterized in that: The communication between the electrical control module (4) and the external main control cabinet is in the powerbus communication mode.

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