CN112460084B - Temporary pump station hydraulic system for debugging engineering high-level equipment and debugging method - Google Patents
Temporary pump station hydraulic system for debugging engineering high-level equipment and debugging method Download PDFInfo
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- CN112460084B CN112460084B CN202011279398.9A CN202011279398A CN112460084B CN 112460084 B CN112460084 B CN 112460084B CN 202011279398 A CN202011279398 A CN 202011279398A CN 112460084 B CN112460084 B CN 112460084B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
- F15B11/08—Servomotor systems without provision for follow-up action; Circuits therefor with only one servomotor
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
- F15B13/025—Pressure reducing valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B19/00—Testing; Calibrating; Fault detection or monitoring; Simulation or modelling of fluid-pressure systems or apparatus not otherwise provided for
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
- F15B21/04—Special measures taken in connection with the properties of the fluid
- F15B21/041—Removal or measurement of solid or liquid contamination, e.g. filtering
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
- F15B21/04—Special measures taken in connection with the properties of the fluid
- F15B21/042—Controlling the temperature of the fluid
- F15B21/0423—Cooling
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Abstract
The invention relates to a temporary pump station hydraulic system for debugging engineering high-level equipment, which comprises a pump control system, a debugging constant pressure module and a backflow pressure reducing system, wherein the pump control system, the debugging constant pressure module and the backflow pressure reducing system are connected in series, the pump control system controls the opening and closing of a main oil way, the debugging constant pressure module adjusts the flow and the pressure of a branch oil way, and the backflow pressure reducing system stabilizes the pressure of an oil return pipe. The invention has low cost, simple components and high automation degree, and can meet the requirement of simultaneously debugging and using multiple devices.
Description
Technical Field
The invention relates to the technical field of hydraulic pressure, in particular to a temporary pump station hydraulic system for debugging engineering high-level equipment.
Background
Metallurgical construction and industrial construction are not separated from various large-scale equipment. The hydraulic technology is superior to the hydraulic technology in that the advantages of higher power-weight ratio, quick response, stable operation, lubricating equipment in work and the like occupy the field, so that modern engineering equipment is almost hydraulic driving equipment. With reference to large hydraulic drives, the cooling system has to be lifted, which is almost a standard fit for large hydraulic equipment. Therefore, after the engineering equipment is installed in place, the temporary hydraulic station and the cooling station are generally used for connection debugging, and the hydraulic system designed for the body equipment is used before joint debugging or formal use after confirmation. Therefore, the invention is necessary to provide a hydraulic system with dual purposes of shoulder pressure oil and a cooling system for a temporary pump station. In engineering construction, a simple pump and a common stop valve are used as an oil source, namely, the pump and the common stop valve participate in monomer debugging, although the cost is low, the applicability is not high, and only one type of pump source is suitable for one type or two types of equipment. On the whole, the simple pump source is high in debugging cost, and much cost is wasted. Another problem is that the installation positions of the engineering equipment are different, some installation elevations can reach six meters, seventy meters and even more than one hundred meters, in the process of debugging the multiple equipment, the actual supply pressure and the required pressure of the equipment with larger height difference are inconsistent, and the damage to the equipment is obvious. In the market, no temporary pump station for debugging large-scale equipment has been researched specially.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a hydraulic system of a temporary pump station for debugging engineering high-level equipment, wherein the two-purpose systems are respectively provided with an automatic flow system, and the simultaneous debugging and use of multiple equipment can be met.
In order to solve the technical problem, the invention is realized as follows:
the utility model provides a temporary pump station hydraulic system for debugging of engineering high-order equipment which characterized in that: the device comprises a pump control system, a debugging constant pressure module and a backflow pressure reducing system, wherein the pump control system, the debugging constant pressure module and the backflow pressure reducing system are connected in series, the pump control system controls the opening and closing of a main oil way, the debugging constant pressure module adjusts the flow and the pressure of a branch oil way, and the backflow pressure reducing system stabilizes the pressure of an oil return pipe.
Temporary pump station hydraulic system for debugging engineering high-order equipment, its characterized in that: the pump control system comprises a pump, a motor, an oil absorption filter, a pressure gauge switch, a pressure gauge, a pilot overflow valve, a first electromagnetic directional valve and a second electromagnetic directional valve; the debugging constant-pressure module comprises three modules, wherein the module a comprises a third electromagnetic directional valve, a first flow regulating valve, a first pressure reducing valve, a first pressure gauge and a first temperature measuring instrument; the module b comprises a fourth electromagnetic directional valve, a second flow regulating valve, a second pressure reducing valve, a second pressure gauge and a second temperature measuring instrument; the module c comprises a fifth electromagnetic directional valve, a third flow regulating valve, a third pressure reducing valve, a third pressure gauge and a third temperature measuring instrument; the backflow pressure reduction system comprises a fourth thermometer and a fourth pressure reduction valve;
the pump is respectively connected with the oil absorption filter, the motor and the first electromagnetic directional valve, the overflow valve is connected with the pressure gauge switch and the pressure gauge, the first electromagnetic directional valve is respectively connected with the second electromagnetic directional valve, the third electromagnetic directional valve, the fourth electromagnetic directional valve and the fifth electromagnetic directional valve, the third electromagnetic directional valve is sequentially connected with the first flow regulating valve, the first pressure reducing valve, the first pressure gauge, the debugged system and the first temperature measuring instrument, the fourth electromagnetic directional valve is sequentially connected with the second flow regulating valve, the second pressure reducing valve, the second pressure gauge, the debugged system and the second temperature measuring instrument, and the fifth electromagnetic directional valve is sequentially connected with the third flow regulating valve, the third pressure reducing valve, the third pressure gauge, the debugged system and the third temperature measuring instrument; the debugged systems of the three modules are connected in parallel and then are sequentially connected with a fourth temperature measuring instrument and a fourth pressure reducing valve.
The debugging method of the hydraulic system of the temporary pump station for debugging the engineering high-level equipment is characterized by comprising the following steps: the pump control system is characterized in that a motor drives a pump to suck oil through an oil suction filter, a pilot operated overflow valve limits the highest working pressure of the system and plays roles of safety protection and overflow, a first electromagnetic directional valve is a main oil circuit switch, a second electromagnetic directional valve is a bypass valve to control the unloading of a main oil circuit, and a pressure gauge switch and a pressure gauge are used for measuring the pressure of the main oil circuit oil;
the debugging constant pressure module is a module system, the debugging constant pressure module has slightly different functions of elements when being used as a temporary oil source system and a temporary cooling system, the control system mechanisms are different, taking the module a as an example, the modules b and c are similar, and when the hydraulic system is used as the temporary oil source system, the flow of the first electric flow regulating valve regulating branch debugging oil path a is matched with the flow demand of the debugged system; the first pressure reducing valve is used for matching the pressure of the pressure reducing branch debugging oil way a with the pressure requirement of a debugged system; the first temperature measuring instrument is used for measuring the temperature of return oil after passing through a debugged system, and when the hydraulic system is used as a temporary cooling system, the first pressure reducing valve is used for reducing the pressure of the branch cooling passage a to be matched with the pressure requirement of the cooling system of the debugged system; the first temperature measuring instrument is used for measuring the temperature of the cooling medium passing through the debugged system, transmitting the temperature to the electronic control system, calculating the temperature rise of the system by the electronic control system, feeding back the temperature to the first electric flow regulating valve for acting, and realizing the purpose of automatically controlling the quantity of the cooling medium passing through so as to achieve the purpose that the system works in a specific and stable temperature environment. When a hydraulic system of debugged equipment is not connected into a module, the electromagnetic directional valve in the module disconnects a branch, and an interface is closed;
the backflow pressure reducing system is characterized in that the backflow pressure reducing system is used for preventing overlarge altitude difference between high-level equipment and a temporary oil source and overlarge pressure of an oil outlet in an oil return pipe, oil in a stirring oil tank splashes, bottom sediments float to reduce the service life of a filter, the service life of the system is shortened, so that a backflow pipe is adopted to be close to an outlet to arrange a pressure reducing valve to offset the high-level pressure difference, the pressure of the oil return pipe is stabilized, the valve adjusting pressure cannot be overlarge, the actual pressure difference is used as a standard, only the high-level pressure difference is offset, and extra backpressure cannot be generated on the system.
The beneficial effects of the invention are: the hydraulic system can carry pressure oil and a cooling system. The dual-purpose system has respective automatic flow systems, and can meet the requirement of debugging and using multiple devices simultaneously. The system has low cost, simple components and high automation degree.
In engineering construction, a simple pump and a common stop valve are used as an oil source, namely, the pump and the common stop valve participate in monomer debugging, although the cost is low, the applicability is not high, and only one type of pump source is suitable for one type or two types of equipment. On the whole, the simple pump source is high in debugging cost, and much cost is wasted. The other is that the installation positions of the engineering equipment are different, some installation elevations can reach six meters, seventy meters or even one hundred meters, in the process of debugging the multiple equipment, the actual supply pressure and the required pressure of the equipment with large altitude difference are inconsistent, and the damage to the equipment is obvious. In the market, no temporary pump station for debugging large-scale equipment is specially researched, and a standard modular system for oil source and cooling can be used, and automatic control is realized. The invention fills the blank, reduces the debugging cost in the long run, can save the cost for construction enterprise units and owners, and increases the benefit.
Drawings
The invention is described in further detail below with reference to the following figures and embodiments:
FIG. 1 is a hydraulic system diagram of a temporary pump station hydraulic system for debugging engineering high-level equipment according to the invention;
FIG. 2 is a flow chart of the operation of the hydraulic system of the present invention as a temporary source system;
FIG. 3 is a flow chart of the operation of the hydraulic system of the present invention as a temporary cooling circuit system;
FIG. 4 is a state diagram of an electromagnet of the hydraulic system of the present invention having three sets of debugging constant pressure modules only enabling set a;
fig. 5 is a state diagram of the electromagnet of the hydraulic system provided with three groups of debugging constant pressure modules only starting the group a and the group b modules.
Detailed Description
As shown in fig. 1-5: a temporary pump station hydraulic system for debugging engineering high-level equipment comprises a pump control system, a debugging constant pressure module and a backflow pressure reduction system, wherein the pump control system, the debugging constant pressure module and the backflow pressure reduction system are connected in series, the pump control system controls the opening and closing of an oil way, and a centrifugal pump is driven by a three-phase asynchronous motor to supply pressure oil to the system; the pilot overflow valve controls the pressure flowing into the system and has the function of system safety protection; the pressure gauge switch and the pressure gauge are used for measuring the pressure value of the oil liquid at the outlet of the pump and used as a basis for judging whether the pressure requirement of the equipment is met; the two-position two-way electromagnetic directional valve of the main oil way is used for controlling the total on-off of the main oil way and the debugged system; the bypass oil way two-position two-way electromagnetic directional valve (bypass valve) is used for controlling unloading of the main oil way (comprising system unloading starting and system unloading after debugging is finished);
the debugging constant pressure module adjusts the flow and pressure of the branch oil circuit, and the electromagnetic directional valve plays a role in connecting and disconnecting the branch oil circuit of the system; the electric flow regulating valve regulates the flow of a branch oil path to be matched with the flow demand of a system connected with the branch to be debugged; the pressure reducing valve is used for adjusting the pressure of the branch oil path to be consistent with the pressure requirement of a system to be debugged connected with the branch; the pressure gauge is used for detecting a dynamic pressure value of the branched oil after being decompressed by the decompression valve and is used as a basis for matching with the pressure requirement of a connected system; the thermodetector only works when the system is used for a cooling system, measures the return oil temperature of the branch system, calculates the temperature rise of the system through the electronic control system, and feeds the temperature rise back to the action of the electric flow regulating valve, so that the purpose of automatically controlling the flow rate is achieved, and the system is ensured to work in a specific and stable temperature environment.
The pressure of the oil return pipe is stabilized by the backflow pressure reducing system, and after the high-rise equipment is debugged, the height difference of the backflow pipe is too large, so that the backflow pipe can impact an oil tank and stir deposited impurities at the bottom of the tank, and the service life of the filter is shortened. The pressure reducing valve is used for offsetting the backflow pressure difference and avoiding the occurrence of impact.
The temperature measuring instrument only works when the system is used for a cooling system, is used for detecting the temperature of a main return pipe of the system, and is transmitted to the electronic control system to calculate whether the temperature rise of the whole hydraulic system is within the actual effective definition, so that the phenomenon that the average temperature rise is larger than the designed value and the cooling effect is lost is avoided.
The pump control system comprises a pump 1, a motor 2, an oil absorption filter 3, a pressure gauge switch 4, a pressure gauge 5, a pilot overflow valve 6, a first electromagnetic directional valve 7 and a second electromagnetic directional valve 8; the debugging constant-pressure module comprises three modules, wherein the module a comprises a third electromagnetic directional valve a1, a first electric flow regulating valve a2, a first pressure reducing valve a3, a first pressure gauge a4 and a first temperature measuring instrument a 5; the module b comprises a fourth electromagnetic directional valve b1, a second electric flow regulating valve b2, a second pressure reducing valve b3, a second pressure gauge b4 and a second temperature measuring instrument b 5; the module c comprises a fifth electromagnetic directional valve c1, a third electric flow regulating valve c2, a third pressure reducing valve c3, a third pressure gauge c4 and a third temperature measuring instrument c 5; the backflow pressure reduction system comprises a fourth temperature measuring instrument 9 and a fourth pressure reducing valve 10;
the pump is respectively connected with the oil absorption filter, the motor and the first electromagnetic directional valve, the overflow valve is connected with the pressure gauge switch and the pressure gauge, the first electromagnetic directional valve is respectively connected with the second electromagnetic directional valve, the third electromagnetic directional valve, the fourth electromagnetic directional valve and the fifth electromagnetic directional valve, the third electromagnetic directional valve is sequentially connected with the first flow regulating valve, the first pressure reducing valve, the first pressure gauge, the debugged system and the first temperature measuring instrument, the fourth electromagnetic directional valve is sequentially connected with the second flow regulating valve, the second pressure reducing valve, the second pressure gauge, the debugged system and the second temperature measuring instrument, and the fifth electromagnetic directional valve is sequentially connected with the third flow regulating valve, the third pressure reducing valve, the third pressure gauge, the debugged system and the third temperature measuring instrument; the debugged systems of the three modules are connected in parallel and then are sequentially connected with a fourth temperature measuring instrument and a fourth pressure reducing valve.
The temporary pump station hydraulic system for debugging the engineering high-level equipment comprises a pump control system, a debugging constant pressure module and a backflow pressure reduction system. The oil source can be used as a temporary oil source for debugging high-level engineering equipment and can also be used as a temporary cooling circulation system for debugging the engineering equipment.
The pilot operated overflow valve is used for system safety protection and overflow, the main oil path is provided with a two-position two-way normally open first electromagnetic directional valve as an oil path switch for pressing the main oil path, and the bypass is also provided with a two-position two-way normally open second electromagnetic directional valve (bypass valve) for controlling unloading of the main oil path (including system unloading starting and system unloading after debugging), and the bypass unloading is basically 0 backpressure.
And a pressure reducing valve is arranged at the position, close to the outlet, of the oil return pipe, so that the pressure of the oil return pipe is stabilized. The pressure of an oil outlet in the oil return pipe is too large due to the fact that the altitude difference between the high-level equipment and the temporary oil source or the temporary cooling pump station is too large, the phenomenon that oil in the oil tank splashes around due to impact and stirring of the oil in the outlet oil is avoided, and therefore bottom sediments are prevented from floating, the service life of the filter is shortened, and the whole service life of the system is shortened. The main oil return pipeline is provided with a temperature measuring instrument for detecting the temperature of the main oil return oil and transmitting the temperature to the electronic control system, and the electronic control system detects the temperature rise to ensure that the hydraulic system of the temporary pump station works within a designed heat dissipation power range.
As shown in fig. 1: the invention relates to a temporary pump station hydraulic system for debugging engineering high-level equipment, which comprises a pump control system, a debugging constant pressure module and a backflow pressure reduction system. The pump control system is characterized in that a motor 2 drives a pump 1 to suck oil through an oil suction filter 3, a pilot overflow valve 6 limits the highest working pressure of the system and plays roles of safety protection and overflow, a two-position two-way normally open first electromagnetic reversing valve 7 is a main oil way switch, a two-position two-way normally open second electromagnetic reversing valve 8 is used as a bypass valve to control unloading of a main oil way (including system unloading starting and system unloading after debugging is finished), and a pressure gauge switch 4 and a pressure gauge 5 are used for measuring the pressure of the main oil way.
The debugging constant pressure module is a module system, namely a package is formed into a module by similar structures, so that the connection mode is simplified, and the hydraulic system is convenient to understand and use. The debugging constant pressure module has slightly different functions of elements when being used as a temporary oil source system and a temporary cooling system, and has different control system mechanisms. This section, taking as an example the module a shown in fig. 1 (and similarly the modules b, c), consists of the following elements: a 1-two-position normally open third electromagnetic directional valve (branch debugging oil way a-way switch), a 2-first electric flow regulating valve, a 3-first reducing valve, a 4-branch debugging oil way a-way first pressure gauge and a 5-branch debugging oil way a-way first temperature measuring instrument. When the hydraulic system is used as a temporary oil source system, the first electric flow regulating valve a2 regulates the flow of a branch debugging oil path to be matched with the flow demand of a debugged system; the first pressure reducing valve a3 is used for matching the pressure of a pressure reducing branch debugging oil way a with the pressure requirement of a debugged system; the first temperature measuring instrument a5 is used for measuring the temperature of return oil after passing through a debugged system. When the hydraulic system is used as a temporary cooling system, the first pressure reducing valve a3 is used for reducing the pressure of the branch cooling passage a to match the pressure requirement of the cooling system of the debugged system; the first temperature measuring instrument a5 is used for measuring the temperature of the cooling medium passing through the debugged system, transmitting the temperature to the electronic control system, calculating the temperature rise of the system by the electronic control system, and feeding back the temperature to the first electric flow regulating valve a2 for realizing the purpose of automatically controlling the quantity of the cooling medium passing through, so as to achieve the purpose that the system works in a specific and stable temperature environment. When the hydraulic system of the debugged equipment is not accessed into the module, the interface is closed.
The backflow pressure reduction system comprises a 9-thermometer and a 10-pressure reduction valve. In order to prevent the overlarge height difference between the high-level equipment and the temporary oil source and the overlarge pressure of an oil outlet in the oil return pipe, the oil in the oil tank is stirred to splash, bottom sediments float to reduce the service life of a filter, and the service life of the system is shortened, so that a pressure reducing valve is arranged at a position close to an outlet of a return pipe to offset the high-level pressure difference, and the pressure of the oil return pipe is stabilized (the pressure regulated by the valve cannot be overlarge, the actual pressure difference is taken as the standard, only the high-level pressure difference is offset, and extra back pressure cannot be generated on the system).
Taking a module a connected to a hydraulic system of debugging equipment as an example, the specific working method when the hydraulic system is used as a temporary oil source system is as follows: as shown in fig. 2, a hydraulic system of a debugged device is connected to a standard debugging constant pressure module oil way; setting a pilot overflow valve 6 to set the maximum working pressure of a temporary pump station system, setting a main oil return circuit pressure reducing valve 10 to counteract the actual high-level pressure difference, and setting a first pressure reducing valve a3 communicated with an oil circuit of a standard debugging pressure-fixing module to be consistent with the pressure requirement of the accessed debugged equipment; pressing a start button, starting the electronic control system, and electrifying a two-position two-way third electromagnetic directional valve a1 on the standard debugging constant pressure module oil way (the standard debugging constant pressure module oil way is disconnected); inputting a flow demand value communicated with an oil way of the standard debugging constant pressure module, and automatically adjusting the corresponding position by the first electric flow adjusting valve a 2; the motor 2 is automatically started after 3 seconds of delay, and the unloading state lasts for 5 seconds (waiting for the set time for the oil supply of the system to be stable); the two-position two-way third electromagnetic directional valve a1 communicated with the oil way of the standard debugging constant-pressure module is powered off, and the second electromagnetic directional valve 8 of the bypass is powered on (pressure oil is obtained by a hydraulic system of debugged equipment); debugging equipment to be debugged; after debugging is finished, a finishing button is pressed, the two-position two-way electromagnetic directional valve 7 is powered on, the second electromagnetic directional valve 8 of the bypass is powered off, oil in a system oil way flows back to the oil tank due to the height difference, and the total oil return way pressure reducing valve 10 is adjusted to 0 (at the moment, the height difference is required to be utilized, so that the adjustment to 0 is realized); after 3 seconds, the motor loses power, and the pump stops pressurizing; and after the oil liquid in the debugging pipeline flows back, pressing a shutdown button, resetting all the electromagnets and finishing the work. The fourth temperature measuring instrument 9 is used for measuring the temperature of the total oil return pipeline when a plurality of modules are simultaneously connected into a plurality of hydraulic pipelines of debugged equipment, and the temperature is compared by an electronic control system to ensure that the hydraulic system of the whole temporary pump station works in the effective heat dissipation power determined in the design.
Taking a module a connected to a cooling system of debugging equipment as an example, the specific working method when the hydraulic system is used as a temporary cooling circulation system is as follows: as shown in fig. 3, a pipeline of a cooling system of a debugged device is connected to an oil way of a standard debugging constant-pressure module; the adjusting pilot overflow valve 6 sets the maximum working pressure of a temporary pump station system, the adjusting total oil return circuit pressure reducing valve 10 counteracts the actual high-level pressure difference, and the adjusting first pressure reducing valve a3 communicated with the oil circuit of the standard debugging pressure-fixing module is consistent with the pressure requirement of the cooling circulation system connected to the debugged equipment; pressing a start button, starting the electronic control system, and electrifying a two-position two-way electromagnetic directional valve a1 on the standard debugging constant-pressure module oil way (the standard debugging constant-pressure module cooling oil way is disconnected); inputting the working temperature value t of the debugged equipment, and starting the motor; the unloading state lasts for 5 seconds (waiting for the set time for the cooling oil supply to be stable); the two-position two-way electromagnetic reversing valve a1 communicated with the standard debugging constant pressure module oil way is powered off, and the second electromagnetic reversing valve 8 of the bypass is powered on (the debugged equipment cooling system obtains cooling oil); the first pressure gauge a4 displays the pressure of cooling oil at the inlet of a cooling system of a device to be debugged actually, the first temperature measurer a5 measures the temperature of the cooling oil passing through the debugged device, and compares the measured temperature with the temperature t input in the electronic control system to drive the first electric flow regulating valve a2, so that the measured temperature is consistent with the input temperature, and the purpose of automatic temperature control is achieved; after debugging is finished, a finishing button is pressed, the two-position two-way first electromagnetic directional valve 7 is powered on, the second electromagnetic directional valve 8 of the bypass is powered off, oil in a system cooling pipeline flows back to the oil tank due to the height difference, and the pressure reducing valve 10 of the main oil return circuit is adjusted to be 0 (at the moment, the height difference is required to be utilized, so that the adjustment is 0); after 3 seconds, the motor loses power, and the pump stops pressurizing; and after the oil liquid in the debugging pipeline flows back, pressing a shutdown button, resetting all the electromagnets and finishing the work. The fourth temperature measuring instrument 9 is used for measuring the temperature of the total oil return pipeline when a plurality of modules are simultaneously connected into a plurality of cooling pipelines of debugged equipment, and the temperature is compared by an electronic control system to ensure that the hydraulic system of the whole temporary pump station works in the effective heat dissipation power determined in the design.
The selection quantity of the standard constant pressure modules is comprehensively determined according to the quantity of equipment and pressure grade which need to be debugged on site, including various pressure losses and flow requirements.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (2)
1. The utility model provides a temporary pump station hydraulic system for debugging of engineering high-order equipment which characterized in that: the system comprises a pump control system, a debugging constant pressure module and a backflow pressure reducing system, wherein the pump control system, the debugging constant pressure module and the backflow pressure reducing system are connected in series, the pump control system controls the opening and closing of a main oil way, the debugging constant pressure module adjusts the flow and the pressure of a branch oil way, and the backflow pressure reducing system stabilizes the pressure of an oil return pipe;
the pump control system comprises a pump, a motor, an oil absorption filter, a pressure gauge switch, a pressure gauge, a pilot overflow valve, a first electromagnetic directional valve and a second electromagnetic directional valve; the debugging constant-pressure module comprises three modules, wherein the module a comprises a third electromagnetic directional valve, a first electric flow regulating valve, a first pressure reducing valve, a first pressure gauge and a first temperature measuring instrument; the module b comprises a fourth electromagnetic directional valve, a second electric flow regulating valve, a second pressure reducing valve, a second pressure gauge and a second temperature measuring instrument; the module c comprises a fifth electromagnetic directional valve, a third electric flow regulating valve, a third pressure reducing valve, a third pressure gauge and a third temperature measuring instrument; the backflow pressure reduction system comprises a fourth thermometer and a fourth pressure reduction valve;
the pump is respectively connected with the oil absorption filter, the motor and the first electromagnetic directional valve, the overflow valve is connected with the pressure gauge switch and the pressure gauge, the first electromagnetic directional valve is respectively connected with the second electromagnetic directional valve, the third electromagnetic directional valve, the fourth electromagnetic directional valve and the fifth electromagnetic directional valve, the third electromagnetic directional valve is sequentially connected with the first flow regulating valve, the first pressure reducing valve, the first pressure gauge, the debugged system and the first temperature measuring instrument, the fourth electromagnetic directional valve is sequentially connected with the second flow regulating valve, the second pressure reducing valve, the second pressure gauge, the debugged system and the second temperature measuring instrument, and the fifth electromagnetic directional valve is sequentially connected with the third flow regulating valve, the third pressure reducing valve, the third pressure gauge, the debugged system and the third temperature measuring instrument; the debugged systems of the three modules are connected in parallel and then are sequentially connected with a fourth temperature measuring instrument and a fourth pressure reducing valve.
2. The method for debugging the hydraulic system of the temporary pump station for debugging the engineering high-level equipment according to claim 1, wherein the method comprises the following steps: the pump control system is characterized in that a motor drives a pump to suck oil through an oil suction filter, a pilot overflow valve limits the highest working pressure of the system and plays roles of safety protection and overflow, a first electromagnetic directional valve is a main oil circuit switch, a second electromagnetic directional valve is a bypass valve to control unloading of a main oil circuit, and a pressure gauge switch and a pressure gauge are used for measuring the pressure of the main oil circuit oil;
the debugging constant pressure module is a module system, the debugging constant pressure module has slightly different element functions when being used as a temporary oil source system and a temporary cooling system, the control system mechanisms are different, taking the module a as an example, the debugging methods of the module b and the module c are the same as the module a, and when the hydraulic system is used as the temporary oil source system, the flow of the a way of the debugging branch debugging oil way of the first electric flow regulating valve is matched with the flow requirement of the debugged system; the first pressure reducing valve is used for matching the pressure of the pressure reducing branch debugging oil way a with the pressure requirement of a debugged system; the first temperature measuring instrument is used for measuring the temperature of return oil after passing through a debugged system, and when the hydraulic system is used as a temporary cooling system, the first pressure reducing valve is used for reducing the pressure of the branch cooling passage a to be matched with the pressure requirement of the cooling system of the debugged system; the first temperature measuring instrument is used for measuring the temperature of the cooling medium passing through the debugged system, transmitting the temperature to the electronic control system, calculating the temperature rise of the system by the electronic control system, and feeding back the temperature to the first electric flow regulating valve to realize the purpose of automatically controlling the quantity of the cooling medium passing through so as to achieve the purpose that the system works in a specific and stable temperature environment; when a hydraulic system of debugged equipment is not connected into a module, the electromagnetic directional valve in the module breaks a branch, and an interface is closed;
the backflow pressure reducing system is characterized in that the backflow pressure reducing system is used for preventing overlarge altitude difference between high-level equipment and a temporary oil source and overlarge pressure of an oil outlet in an oil return pipe, the oil in an oil tank is stirred to splash, bottom sediments float to reduce the service life of a filter, the service life of the system is shortened, so that a backflow pipe is adopted to be close to an outlet to arrange a pressure reducing valve to offset high-level pressure difference, the pressure of the oil return pipe is stabilized, the pressure adjusted by the valve cannot be overlarge, actual pressure difference is taken as the standard, only the high-level pressure difference is offset, and extra backpressure cannot be generated on the system.
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