CN115938185B - Power plant EH control system state overhauls training set - Google Patents

Abstract

The invention provides a power plant EH control system state maintenance training device, which comprises: the hydraulic oil station is used for conveying hydraulic oil with pressure to the actuator group and the emergency blocking device through a hydraulic oil pipeline. The actuating mechanism group includes the oil motor group, and the oil motor group includes: main valve oil engine, heat supply valve and valve oil engine. According to the state overhaul training device for the EH control system of the power plant, through the arrangement of each component in the simulated hydraulic oil station, hydraulic oil and pressure required by an actuating mechanism can be provided for the actuating mechanism through the device, so that normal work of the system can be conveniently completed by matching with the device, a simulated environment can be conveniently completed, and an overhaul training process of the system can be better completed, so that corresponding protection data can be conveniently provided for the subsequent system in actual work.

Description

Power plant EH control system state overhauls training set

Technical Field

The invention relates to the technical field of EH control systems of power plants, in particular to a state maintenance training device for an EH control system of a power plant.

Background

The EH system is an actuator of a control object, comprises a hydraulic motor for controlling a valve and an EH oil supply system for providing high-pressure fire-resistant oil for the hydraulic motor, and also comprises a critical interruption control block (electromagnetic valve), a diaphragm valve and other components for controlling the hydraulic motor to be turned off in an emergency, wherein the EH system has the functions of receiving an output instruction of the DEH control system, controlling the opening of an inlet valve of a steam turbine, changing the steam flow entering the steam turbine and meeting the requirements of the speed and load regulation of the steam turbine. Part of EH control systems exist in the existing power plant, the systems are assembled by a plurality of groups of different large-scale accessories, and corresponding assembly is required according to different assembly conditions in the actual use process, so that the training process of the whole system is often simulated through different accessories in a laboratory, but the accessories in the existing simulation mechanism are difficult to ensure the integrity and suitability of the simulation mechanism.

Therefore, we propose a power plant EH control system state maintenance training device.

Disclosure of Invention

Aiming at the defects of the prior art, the invention provides a power plant EH control system state maintenance training device, which solves the problems of low assembly efficiency and easy error caused by on-site debugging of data in the assembly of the existing system.

In order to solve the technical problems, the invention discloses a power plant EH control system state maintenance training device, which comprises:

the hydraulic oil station is used for conveying hydraulic oil with pressure to the actuator group and the emergency blocking device through a hydraulic oil pipeline.

Preferably, the actuator group includes an oil motor group, and the oil motor group includes: the main valve oil engine is used for controlling a main valve of the steam turbine, the valve oil engine is used for controlling a regulating valve of the steam turbine, the steam turbine is provided with a heat supply regulating valve, and the heat supply regulating valve oil engine is used for controlling the heat supply regulating valve.

Preferably, the actuator group includes: the control type actuating mechanism and the switch type actuating mechanism are arranged, and each integrated block of the actuating mechanism is provided with an unloading valve.

Preferably, the simulated hydraulic oil station comprises: oil tank, oil pump, control block, oil filter, overflow valve, EH terminal box, the oil-out of oil tank is connected the oil inlet of oil pump, the high-pressure oil header pipe is connected to the oil-out of oil pump, the high-pressure oil header pipe is connected with the overflow valve, be connected with the oil filter on the oil return pipeline of oil tank, install control block and EH terminal box on the oil tank, simulation hydraulic oil station still includes: standard equipment for alerting, indicating and controlling the relative oil pressure, oil temperature, oil level of a simulated hydraulic oil station.

Preferably, the oil supply device of the simulated hydraulic oil station comprises two main oil pumps and a cooling pump, wherein the specification of a power supply of the main oil pumps is 5.5KW, 380VAC and 50HZ three phases, and the specification of the power supply of the cooling pump is 1.5KW, 380VAC and 50HZ three phases; the oil pump output pressure of the simulated hydraulic oil station is set to be 0-21 MPa, the overflow valve works when the pressure of the high-pressure oil pipe reaches 17+/-0.2 MPa, and the simulated hydraulic oil station is provided with a test electromagnetic valve.

Preferably, the heat supply regulating valve adopts a rotary butterfly valve design.

Preferably, the method further comprises:

the counter is used for counting the working times of the simulated hydraulic oil station;

the first detection device is used for detecting the working parameters of the simulated hydraulic oil station, and the working parameters of the simulated hydraulic oil station comprise: the method comprises the steps of simulating output oil pressure of a hydraulic oil station, simulating return oil pressure of the hydraulic oil station and simulating oil temperature in an oil tank of the hydraulic oil station;

the timer is used for metering the starting time and the ending time of each work of the simulated hydraulic oil station;

the second detection device is used for detecting the working parameters of the corresponding execution device when the simulated hydraulic oil station works, and the execution device comprises: an actuator group and a critical shutoff device;

The first storage module is used for storing detection results of the counter, the first detection device, the timer and the second detection device;

the first evaluation device is used for periodically evaluating the state maintenance training device of the EH control system of the power plant, and evaluating the working reliability of the state maintenance training device of the EH control system based on the detection values of the counter, the first detection device, the timer and the second detection device in the preset time period and the historical detection values stored in the first storage module.

Preferably, the simulated hydraulic oil station further comprises: an oil temperature adjusting device, the oil temperature adjusting device comprising:

the refrigerator comprises an outer box body, wherein an inner box body is arranged in the outer box body, a temperature-adjusting water pipe is wound on the outer wall of the inner box body, the temperature-adjusting water pipe and a temperature-adjusting water tank form water circulation through a water pump, and the temperature-adjusting water tank is connected with a refrigerating device;

the outer wall of the inner box body is connected with a temperature detection device.

Preferably, the upper end of the outer box body is also connected with an oil inlet adjusting device, and the oil inlet adjusting device comprises:

the oil inlet shell fixedly penetrates through the upper end of the outer box body, the lower end of the oil inlet shell is provided with an oil outlet, and the oil outlet is communicated with an oil inlet at the upper end of the inner box body;

The inner lower end of the filter shell is connected with a filter screen;

the sealing seat is fixedly connected to the upper end of the inner box body and is communicated with an oil inlet at the upper end of the inner box body, and the upper end of the sealing seat is provided with a mounting groove which is used for mounting the lower end of the filter shell;

the matching sleeve is sleeved on the outer side of the sealing seat in a sliding manner, and a second matching surface is arranged on the outer side of the matching sleeve;

the two ends of the linear motor are respectively connected with the lower end of the oil inlet shell and the upper end of the matching sleeve;

the U-shaped seat is arranged with an opening facing the filtering shell, the upper horizontal section of the U-shaped seat is penetrated into the oil inlet outer shell in a sliding way, one side of the lower horizontal section of the U-shaped seat, which is close to the sealing seat, is provided with a first matching surface, the second matching surface is contacted with the first matching surface, the first matching surface and the second matching surface are both inclined surfaces, and the height of one side of the first matching surface, which is close to the sealing seat, is higher than the height of one side of the first matching surface, which is far away from the sealing seat;

the mounting plate, mounting plate fixed connection is on the last horizontal segment of U-shaped seat, fixedly connected with a plurality of horizontal oil feed poles on the mounting plate, the filtration shell outer wall sets up the confession the horizontal through-hole that horizontal oil feed pole got into.

Preferably, the filtering shell left and right sides symmetry sets up the connection recess, advances oil adjusting device and still two sets of stop device, stop device includes:

the limiting block is fixedly connected to the inner wall of the oil inlet shell, and a rotating groove is formed in the lower portion of the limiting block;

the upper part of the supporting rod is rotationally connected with the inner wall of the rotary groove, and a spring is fixedly connected between the supporting rod and the inner wall of the oil inlet shell;

and the limiting ball is fixedly connected to the lower end of the supporting rod and is used for being connected into the connecting groove.

Preferably, a hydraulic oil pipe network of the power plant EH control system state maintenance training device is divided into a plurality of first areas, each first area at least comprises a key hydraulic oil pipeline, and each key hydraulic oil pipeline is a sub-area;

the power plant EH control system state maintenance training device further includes: the hydraulic oil pipe network evaluation device, hydraulic oil pipe network evaluation device includes:

the detection module is used for detecting key hydraulic oil pipeline parameters in each subarea, and the key hydraulic oil pipeline parameters comprise: hydraulic oil pressure, hydraulic oil temperature and hydraulic oil flow rate of key parts of the hydraulic oil pipeline;

The second storage module stores: the position of each first area and each sub-area, the starting use time of the key hydraulic oil pipeline, and the historical abnormal information and the abnormal influence level of the key hydraulic oil pipeline, wherein the historical abnormal information comprises the historical abnormal frequency;

the first evaluation module is used for determining the actual evaluation value of each subarea based on the detection module and the second storage module;

for the actual evaluation value of the ith sub-zone of the L-th first zone, M is the number of key parts of the ith sub-zone of the L-th first zone, N is the number of key hydraulic oil pipeline parameters of the ith sub-zone of the L-th first zone,the detection value of the h key hydraulic oil pipeline parameter of the j key part of the ith sub-area of the L first area is +.>A reference value of the h key hydraulic oil pipeline parameter of the j key part of the ith sub-zone of the L first zone,/for the h key hydraulic oil pipeline parameter of the j key part of the ith sub-zone of the L first zone>Detection value of h key hydraulic oil pipeline parameter of j-1 th key part of the ith sub-area of the L th first area, +.>The detection value of the h key hydraulic oil pipeline parameter of the j+1th key position of the ith sub-region of the L first region, wherein the j-1th key position, the j key position and the j+1th key position are adjacent key positions; / >An abnormal influence level for the ith sub-area of the L-th first area, +.>Abnormal frequency of the ith sub-region which is the L-th first region; />For the current duration of the hydraulic oil line used corresponding to the ith sub-zone of the L-th first zone,/-, for example>The current rated total use time length of the hydraulic oil pipeline corresponding to the ith sub-area of the L-th first area is longer;

the second evaluation module is used for determining evaluation values of the first areas based on the first evaluation module;

for the evaluation value of the L-th first region, W is the number of sub-regions in the L-th first region, +.>For the actual evaluation value of the ith sub-area of the L-th first area, +.>A reference evaluation value for the ith sub-region of the L-th first region;

a ranking module for ranking the evaluation values of the respective first areas from large to small;

the display unit is used for displaying the ordering result of the ordering module and the position of the corresponding first area.

The beneficial effects of the invention are as follows: according to the state maintenance training device for the EH control system of the power plant, through the arrangement of each component in the simulated hydraulic oil station, hydraulic oil and pressure required by an actuating mechanism can be provided for the actuating mechanism through the simulation device, so that the normal work of the system can be conveniently completed by matching with the simulation device, the simulation environment can be conveniently completed, the maintenance training process of the system can be better completed, corresponding protection data can be conveniently provided for the subsequent system in actual work, and the situations of low assembly efficiency and easiness in error caused by the fact that the data need to be debugged on site when the existing system is assembled are avoided; meanwhile, the critical interruption system can prevent the steam turbine from serious damage accidents caused by the abnormal operation of part of equipment during the operation of the steam turbine.

The technical scheme of the invention is further described in detail through the drawings and the embodiments.

Drawings

The accompanying drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate the invention and together with the embodiments of the invention, serve to explain the invention. In the drawings:

FIG. 1 is a schematic block diagram of the structure of the present invention;

FIG. 2 is a schematic diagram of a simulated hydraulic oil station according to the present invention;

FIG. 3 is a schematic diagram of a hydraulic system of a control actuator according to the present invention;

FIG. 4 is a schematic diagram of a switch-type actuator according to the present invention;

FIG. 5 is a schematic diagram of a critical shut-off device according to the present invention;

FIG. 6 is a schematic diagram of a heating control valve and a heating control valve oil engine according to the present invention;

FIG. 7 is a schematic diagram of a hydraulic system of a switch-type actuator according to the present invention;

fig. 8 is a schematic structural view of an embodiment of an oil temperature adjusting apparatus of the present invention;

FIG. 9 is an enlarged schematic view of the structure at A in FIG. 8;

fig. 10 is an enlarged schematic view of the heat dissipating device of fig. 8.

In the figure: 100. a hydraulic pump station; 101. an oil tank; 102. a control block; 103. an oil pump; 104. an oil filter; 200. a critical shut-off device; 2001. a critical intercept control block; 300. heating regulating valve and heating regulating valve oil engine; 1. a second cylinder; 2. a hydraulic manifold block; 3. an unloading valve; 4. an oil feed stop valve; 5. AST check valve; 6. an oil return check valve; 7. two-position two-way electromagnetic valve; 8. a terminal block; 9. oil return; 10. shielding oil; 11. a quick unloading valve; 12. LVDT secondary instrument; 13. DEH valve position command signal; 14. a servo amplifier; 15. high-pressure oil supply; 16. a stop valve; 17. a filter element; 18. a first cylinder; 19. testing an electromagnetic valve; 20. a heat sink; 201. a heat radiation box; 202. a first rotating shaft; 203. a first bevel gear; 204. a fixed block; 205. a worm; 206. a second bevel gear; 207. a worm wheel; 208. a first connecting rod; 209. a second connecting rod; 2010. a third connecting rod; 2011. a connection housing; 2012. a moving plate; 2013. a fan blade; 2014. an electric conductor; 2020. a magnet; 21. an oil inlet adjusting device; 211. an oil feed housing; 212. a filter housing; 213. a matching sleeve; 214. a linear motor; 215. a first matching surface; 216. a second matching surface; 217. a mounting groove; 218. a U-shaped seat; 219. a mounting plate; 2120. a horizontal oil feed rod; 2121. a limiting block; 2122. a support rod; 2123. a limit ball; 2124. a filter screen; 2125. a sealing seat; 2126. a horizontal through hole; 2127. a connection groove; 23. an outer case; 24. an inner case; 25. a temperature regulating water pipe; 26. an electro-hydraulic converter.

Detailed Description

The preferred embodiments of the present invention will be described below with reference to the accompanying drawings, it being understood that the preferred embodiments described herein are for illustration and explanation of the present invention only, and are not intended to limit the present invention.

In addition, the descriptions of the "first," "second," and the like, herein are for descriptive purposes only and are not intended to be specifically construed as order or sequence, nor are they intended to limit the invention solely for distinguishing between components or operations described in the same technical term, but are not to be construed as indicating or implying any relative importance or order of such features. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, technical solutions and technical features between the embodiments may be combined with each other, but it is necessary to base that a person skilled in the art can implement the combination of technical solutions, when the combination of technical solutions contradicts or cannot be implemented, should be considered that the combination of technical solutions does not exist, and is not within the scope of protection claimed by the present invention.

Embodiment 1, an embodiment of the present invention provides a power plant EH control system status maintenance training device, as shown in fig. 1 to 7, including:

The hydraulic oil station simulation system comprises a hydraulic oil station simulation system, an execution mechanism group and a critical blocking device, wherein the hydraulic oil station simulation system is used for conveying hydraulic oil with pressure to the execution mechanism group and the critical blocking device through a hydraulic oil pipeline.

The actuating mechanism group includes the oil motor group, the oil motor group includes: the main valve oil engine is used for controlling a main valve of the steam turbine, the valve oil engine is used for controlling a regulating valve of the steam turbine, the steam turbine is provided with a heat supply regulating valve, and the heat supply regulating valve oil engine is used for controlling the heat supply regulating valve. The simulated hydraulic oil station is used for providing power oil of the oil motor unit. Wherein, each component of the invention can be installed on the corresponding bracket according to the need; the pipeline of the invention is correspondingly provided with pipeline accessories;

preferably, from a type perspective, the actuator group comprises: the control type actuating mechanism (also called servo type) and the switch type actuating mechanism, wherein an unloading valve is arranged on each integrated block of the actuating mechanism (further, when a steam turbine fails and needs to be stopped rapidly, the safety system acts to lose critical oil, the quick unloading valve is opened to release the pressure oil in the lower cavity of the piston of the oil engine rapidly, and the corresponding valve is closed rapidly under the action of spring force), and the switch type actuating mechanism is fixedly arranged on a valve spring control seat; wherein the valve opening is driven by the fire-resistant oil pressure and the closing is by the spring force on the actuating seat. The hydraulic cylinder is connected with a control block, and a stop valve, a quick unloading valve, a check valve and the like are arranged on the control block. With the addition of different additional components, two basic forms of actuating mechanisms (namely a switch type actuating mechanism and a control type actuating mechanism) can be formed; in addition, when the engine is closed quickly, in order to keep the impact stress of the steam valve disc and the valve seat within an allowable range, a hydraulic buffer device is adopted at the tail part of the engine piston, so that the main part of the accumulated kinetic energy can be converted into the energy of fluid at the last moment of impact.

Wherein, as shown in fig. 4, the switch-type actuating mechanism is formed by a second cylinder 1 and a hydraulic integrated block 2, the hydraulic integrated block 2 is provided with a two-position two-way electromagnetic valve 7, a quick unloading valve 11, an oil inlet stop valve 4, an AST check valve 5 and an oil return check valve 6, (the hydraulic integrated block 2 is used for installing and connecting all used components together and is also a connecting piece of all electric joints and hydraulic interfaces), a piston rod and a valve rod (therefore, the piston is used for driving the valve rod to move correspondingly when moving, the oil motor is in single-side action, the thrust of the valve is opened, the valve is closed and the spring force is closed), and the emergency shutoff system is formed by a emergency control block 2001 (also called an electromagnetic valve assembly) with four automatic shut-off electromagnetic valves (20/AST) and two overspeed protection control valves (20/OPC), a pressure switch and the like;

it should be noted that, the two-position two-way electromagnetic valve 7 is used for remotely closing each valve to perform a periodic valve rod activity test, when the electromagnetic valve acts, it rapidly leaks out critical interruption oil 10 inside the oil engine, so as to cause the rapid unloading valve 11 to act;

The unloading valve 3 is a valve that can unload the hydraulic pump under a certain condition; the unloading valve 3 is usually an overflow valve with a two-position two-way valve (usually an electromagnetic valve), and is used for setting the main pressure of a system (an oil pump) when the unloading valve is not unloaded, and pressure oil directly returns to an oil tank when the unloading valve is in an unloading state (the action is converted by the two-position two-way valve), so that the pressure of the oil pump is reduced to be approximately zero, thereby realizing some loop control, prolonging the service life of the oil pump and reducing the power consumption;

the oil inlet stop valve 4 can control the advancing state of the oil path according to signals provided by the switch type actuating mechanism so as to supply oil to the oil path according to requirements;

the arrangement of the oil return check valve 6 can ensure that the mechanism is in a forward oil delivery state, so that the condition of oil return 9 in the oil delivery process is avoided;

the AST check valve 5 can correspondingly monitor the state of the oil return 9 under the critical condition, so that accidents caused by the oil return 9 are avoided;

the terminal strip 8 is an insulating component for bearing a plurality of or a plurality of groups of mutually insulated terminal assemblies and fixing a supporting piece, and can connect circuits of the on-screen equipment and the off-screen equipment, so as to play a role in signal (current and voltage) transmission, thereby achieving the effects of attractive wiring, convenient maintenance, mainly firm connection between remote lines and convenient construction and maintenance.

Preferably, the simulated hydraulic oil station comprises: oil tank, oil pump, control block, oil filter, overflow valve, EH terminal box, the oil-out of oil tank is connected the oil inlet of oil pump, the high-pressure oil header is connected to the oil-out of oil pump, the high-pressure oil header is connected with the overflow valve, be connected with the oil filter on the oil return line of oil tank, install control block and EH terminal box (electrical apparatus case, be equipped with binding post row, pressure switch etc.) on the oil tank, simulation hydraulic oil station still includes: standard equipment for alerting, indicating and controlling the relative oil pressure, oil temperature, oil level of a simulated hydraulic oil station. The simulated hydraulic oil station comprises a self-circulation oil filtering system, specifically, after a period of machine set operation, EH oil quality is deteriorated, and the machine set has to be stopped for oil circulation again to meet the oil quality requirement. In order not to influence the normal permission of the unit, the self-circulation oil filtering system is arranged, an oil pump sucks EH oil from an oil tank, and the EH oil is filtered by a filter and then returns to the oil tank; wherein, the control block processing can install the relevant valve of the analog hydraulic oil station;

preferably, the oil supply device of the simulated hydraulic oil station comprises two main oil pumps and a cooling pump, wherein the specification of a power supply of the main oil pumps is 5.5KW, 380VAC and 50HZ three phases, and the specification of the power supply of the cooling pump is 1.5KW, 380VAC and 50HZ three phases; the oil pump output pressure of the simulated hydraulic oil station is set to be 0-21 MPa, the overflow valve works when the pressure of the high-pressure oil pipe reaches 17+/-0.2 MPa, and the simulated hydraulic oil station is provided with a test electromagnetic valve. The pump output pressure can be set at random between 0 and 21MPa, the normal working pressure range of the state maintenance training device of the EH control system of the power plant is 11.0 to 15.0MPa, and the rated working pressure is 14.5MPa; after the oil pump is started, the oil pump supplies oil to a system (EH control system state maintenance training device) at a full flow rate of about 15 l/min, when the oil pressure reaches the rated pressure of 14.5MPa, the high-pressure oil pushes a control valve on the constant-pressure pump, the control valve operates a variable mechanism of the pump to reduce the output flow rate of the pump, when the output flow rate of the pump is equal to the oil flow rate of the system, the variable mechanism of the pump is maintained at a certain position, and the system is kept in a constant-pressure working state; when the system needs to increase or decrease the oil consumption, the pump can automatically change the output flow, and the oil pressure of the maintenance system is 14.5MPa. The overflow valve works when the pressure of the high-pressure oil pipe reaches 17+/-0.2 MPa; wherein, the overflow valve plays the overvoltage protection effect.

In this embodiment, it should be noted that the simulated hydraulic oil station is provided with a test solenoid valve (20/MPT) which can perform a remote control test on the backup oil pump start switch (63/MP). When the test solenoid valve acts, the high-pressure working oil way is drained. As the pressure decreases, the backup oil pump pressure switch (63/MP) contacts flip to start the backup oil pump. The test solenoid valve and the pressure switch are separated from the high-pressure oil main pipe by the throttle hole, so that the main pipe pressure is not affected during test. The test of the starting switch of the backup oil pump can also be performed by opening a manual normally-closed valve on site; the return oil of each actuating mechanism firstly passes through a 3-micrometer return oil filter through a pressure return pipe and then returns to the oil tank;

the simulated hydraulic station drives a high-pressure plunger pump by an alternating current motor, the fire-resistant oil in the oil tank is sucked through an oil pump suction filter screen, oil from an oil pump outlet flows into a high-pressure oil pipe through a pressure oil filter and a one-way valve, and the high-pressure fire-resistant oil is respectively sent to each executing mechanism and a critical blocking system (device) through pipelines.

In this embodiment, it should be noted that, the control type actuating mechanism is provided with a steam valve that can be installed at any position in the middle;

The control type actuating mechanism can proportionally adjust the steam inlet amount to meet the requirement, after the electric signal of the steam valve to be opened or closed after being processed by computer operation is amplified by the servo amplifier 14, the electric signal is converted into a hydraulic signal in the servo valve of the electro-hydraulic converter 26, so that the main valve of the servo valve moves, the hydraulic signal is amplified to control a channel of high-pressure oil, the high-pressure oil enters a lower cavity of a piston of the oil engine, the piston of the oil engine moves upwards to drive the steam valve to start, or the pressure oil is discharged from the lower cavity of the piston, and the piston moves downwards to close the steam valve by means of spring force. When the engine piston moves, a linear displacement sensor is driven at the same time, the mechanical displacement of the engine piston is converted into an electric signal, the electric signal is used as a negative feedback signal to be added with the signal processed by the computer, the polarities of the electric signal and the signal are opposite, the electric signal is actually subtracted, only after the primary input signal is added with the feedback signal, the signal input into the servo amplifier 14 is zero, the main valve of the servo valve returns to the middle position, the pressure of the working cavity of the engine is in a relative balance state, and the steam valve stops moving at the moment and is kept at a new working position;

In addition, each hydraulic integrated block 2 of the control type actuating mechanism is provided with an unloading valve 3, when the steam turbine fails and needs to be stopped rapidly, the safety system acts to lose critical interruption oil 10, the rapid unloading valve 11 is opened to rapidly release the pressure oil in the lower cavity of the piston of the oil engine, and the corresponding valve is closed rapidly under the action of spring force;

wherein, the oil return 9 means that the lubricating oil in the device is discharged to a corresponding position (such as a compressor), and the process can maintain the balance of the oil of the whole system;

the arrangement of the oil shielding and cutting-off device 10 can rapidly close oil when the system fails, so that the oil way of the whole system can be called urgently, and the condition that the influence of the failure is increased is avoided;

the quick unloading valve 11 is used for enabling pressure oil under a piston of the oil engine to be released through the quick unloading valve 11 after the emergency tripping and other devices act to enable the emergency quick oil-breaking oil-discharging pressure-losing when the unit fails and the emergency shutdown is needed, and at the moment, the control valve is closed no matter the signal output by the amplifier. When an emergency situation occurs in the unit or the running parameters of the unit exceed the limit values, the ETS device sends out an emergency stop signal;

the DHE is an adjusting controller under the working conditions of starting, stopping, normal running and accidents of the control system, and valve signals of the DHE are mainly used for outputting and reading corresponding signals so as to drive different valves to regulate and control oil ways in different states;

The servo amplifier 14 is a controller for controlling the servo motor, acts like a frequency converter on a common alternating current motor, belongs to a part of a servo system, is mainly applied to a high-precision positioning system, and generally controls the servo motor in three modes of position, speed and moment to realize high-precision positioning of a transmission system;

the filter core 17 can purify the liquid oil passing through, and the situation that impurities enter the system to cause the liquid oil to be impure is avoided.

In this embodiment, it should be noted that, in order to prevent a significant damage accident of the steam turbine caused by malfunction of some equipment during operation of the steam turbine, a critical shut-off device 200 is installed on the unit, and the main execution element of the critical shut-off device (system) is composed of a critical shut-off control block 2001 (also called a solenoid valve assembly) with four automatic shut-off solenoid valves (20/AST) and two overspeed protection control valves (20/OPC), and a pressure switch, etc., as shown in fig. 5; during normal operation, the four AST electromagnetic valves (20/AST) are energized and excited to be closed, so that an anti-oil drainage channel on an automatic stop emergency cut-off (AST) master pipe is closed, and the oil pressure of the lower cavity of the oil cylinder piston of the oil cylinder of the steam valve is built. When the electromagnetic valve is powered off and opened, the main pipe discharges oil, so that all the steam valves are closed to stop the steam turbine. The solenoid valves (20/AST) are arranged in series-parallel, so that multiple protections are provided. Each channel (1-3 or 2-4) can be tripped and stopped as long as one solenoid valve is operated. The danger of rejecting the trip is avoided to the maximum extent. Meanwhile, the reliability is improved, and any one of the four AST electromagnetic valves is damaged or malfunction does not cause shutdown;

Whereas OPC solenoid valves are overspeed protection control solenoid valves, they are controlled by the OPC portion of the DEH controller. When the engine runs normally, the two electromagnetic valves are in uncharged normally closed state, the release channel of the OPC master pipe oil is closed, the lower cavity of the engine oil cylinder piston of the adjusting steam valve and the reheating adjusting steam valve can establish oil pressure, and once the OPC control board acts, for example, when the rotating speed reaches 103% of rated rotating speed, the two electromagnetic valves are excited (electrified) to be opened, so that the OPC master pipe oil is released. Thus, the unloading valve 3 on the corresponding oil motor is quickly opened, so that the regulating steam valve and the reheating regulating steam valve are quickly closed;

in addition, the critical interruption control block mainly has the function of providing an interface between an automatic shutdown critical interruption (AST) and an Overspeed Protection Control (OPC) master pipe; six electromagnetic valves (four AST electromagnetic valves and two OPC electromagnetic valves) are arranged on the control block, two one-way valves are arranged in the control block, and necessary channels are processed in the control block to connect all elements. All orifices or through holes that must be drilled to connect the bores are plugged with plugs, each of which is sealed with an "O" ring; and two check valves are arranged between an automatic stop emergency shut-off (AST) oil circuit and an Overspeed Protection Control (OPC) oil circuit, and when an OPC electromagnetic valve is electrified and opened, the check valves maintain the oil pressure of AST, so that the main valve and the reheating main valve are kept fully open. When the rotating speed is reduced to the rated rotating speed, the OPC electromagnetic valve is powered off and closed, the regulating valve and the reheating regulating valve are opened again, so that the rotating speed is controlled by the regulating steam valve, the unit is maintained at the rated rotating speed, when the AST electromagnetic valve acts, the AST oil way oil pressure is reduced, the OPC oil way passes through the two one-way valves, the oil pressure is also reduced, and all the steam inlet valves are closed to stop.

In the embodiment, it is required to supplement that the heat supply regulating valve adopts a rotary butterfly valve design, the actuating mechanism adopts a gear rack mechanism to convert the linear motion of the oil cylinder into the rotary motion of the butterfly valve, and a moving sensor is arranged on a square box body of the actuating mechanism;

the motion sensor is used for detecting a valve position signal and transmitting the valve position signal to the servo valve plate card to form closed-loop control. And the oil is fed into the single side of the oil motor, the valve is reset by adopting a spring box, and when a signal of the servo valve is lost and the hydraulic oil is abnormal, the valve is ensured to be closed. Meanwhile, the valve regulating oil motor receives an OPC interruption signal, and when OPC oil pressure is interrupted, the unloading valve 3 is opened, and the butterfly valve regulating valve is quickly closed.

In this embodiment, it should be further described that a hydraulic oil pipeline is disposed between each component in the system, and the hydraulic oil pipeline is mainly connected to each hydraulic part sleeve, and is mainly composed of necessary components such as a high-pressure oil pipe (HP, AST, OPC, DP, DV) pipe joint, a sealing element, and the like.

The technical scheme has the following working principle and beneficial effects: according to the state maintenance training device for the EH control system of the power plant, through the arrangement of each component in the simulated hydraulic oil station, hydraulic oil and pressure required by an actuating mechanism can be provided for the actuating mechanism through the simulation device, so that the normal work of the system can be conveniently completed by matching with the simulation device, the simulation environment can be conveniently completed, the maintenance training process of the system can be well completed, corresponding protection data can be conveniently provided for the subsequent system in actual work, and the situations that the assembly efficiency is low and errors are easy to occur due to the fact that the data need to be debugged on site when the existing system is assembled are avoided; meanwhile, the critical interruption system can prevent the steam turbine from serious damage accidents caused by the abnormal operation of part of equipment during the operation of the steam turbine.

Embodiment 2, on the basis of embodiment 1, further includes:

the counter is used for counting the working times of the simulated hydraulic oil station;

the first detection device is used for detecting the working parameters of the simulated hydraulic oil station, and the working parameters of the simulated hydraulic oil station comprise: the output oil pressure of the simulated hydraulic oil station, the return oil pressure of the simulated hydraulic oil station and the oil temperature in the oil tank 101 of the simulated hydraulic oil station;

the timer is used for metering the starting time and the ending time of each work of the simulated hydraulic oil station;

the second detection device is used for detecting the working parameters of the corresponding execution device when the simulated hydraulic oil station works, and the execution device comprises: an actuator group and a emergency shutoff device 200;

the first storage module is used for storing detection results of the counter, the first detection device, the timer and the second detection device;

the first evaluation device is used for periodically evaluating the state maintenance training device of the EH control system of the power plant, and evaluating the working reliability of the state maintenance training device of the EH control system based on the detection values of the counter, the first detection device, the timer and the second detection device in the preset time period and the historical detection values stored in the first storage module.

For the evaluation value of the current evaluation, R is the number of operating parameters of the simulated hydraulic oil station, +.>Simulating the working times of the hydraulic oil station within a preset time length corresponding to the current evaluation>The actual detection value of the working parameter of the e-th simulated hydraulic oil station in the s-th working of the simulated hydraulic oil station is within the corresponding preset time length in the current evaluation; />The preset reference value (the average value of the corresponding historical detection values can be taken) of the working parameters of the e-th simulated hydraulic oil station when the s-th simulated hydraulic oil station works in the preset time corresponding to the current evaluation; />Simulating the actual detection value of the working parameter of the f execution device in the s-th working of the hydraulic oil station in the preset time corresponding to the current evaluation; />Simulating a preset reference value (which can be the average value of corresponding historical detection values) of the working parameters of the f execution device in the s-th working of the hydraulic oil station in the preset time period corresponding to the current evaluation; when the second time works, the main valve oil motor can work, and the working parameter of the f-th execution device is the f-th working parameter of the main valve oil motor; lg is the logarithm of base 10, < ->Simulating the working times of the hydraulic oil station in a preset time length corresponding to the current evaluation, and acquiring based on a counter; t is rated single average working time length of the simulated hydraulic oil station, and T is actual average working time length (acquired based on a timer) of each working of the simulated hydraulic oil station within a preset time length corresponding to the current evaluation; / >And->The method comprises the steps that a first coefficient and a second coefficient are respectively provided, wherein the value of the first coefficient is larger than 0 and smaller than 1, and the first coefficient is set by considering the influence of working parameters of a simulated hydraulic oil station on the whole overhaul training device; the second coefficient is set in consideration of the influence of the working parameters of the execution device on the whole overhaul training device.

When the evaluation value of the previous evaluation is not in the corresponding preset range, the operation of the overhaul training device is unreliable when the evaluation value of the previous evaluation is in the corresponding preset duration.

The beneficial effects of the technical scheme are as follows: the work of the overhaul and training device is evaluated periodically, so that the overhaul and training device works conveniently, and a user can be reminded of overhaul in time; and each time of evaluation, the comprehensive evaluation is not based on one time of work, but based on multiple times of work in continuous preset time length, so that the evaluation is more reliable; and during evaluation, the comparison of the actual detection value of the working parameter of the simulated hydraulic oil station and the corresponding preset reference value is considered, the comparison of the actual detection value of the working parameter of the simulated hydraulic oil station and the preset reference value is considered, and the influence of the working times and the single working time of the simulated hydraulic oil station in the preset time period is considered, so that the evaluation is more reliable.

Example 3, on the basis of example 1 or 2, the simulated hydraulic oil station further comprises: an oil temperature adjusting device, the oil temperature adjusting device comprising:

the refrigerator comprises an outer box body 23, an inner box body 24 is arranged in the outer box body 23, a temperature-adjusting water pipe 25 is wound on the outer wall of the inner box body 24, the temperature-adjusting water pipe 25 and a temperature-adjusting water tank form water circulation through a water pump, and the temperature-adjusting water tank is connected with a refrigerating device; the refrigeration device selects the type according to the actual requirement;

the outer wall of the inner box 24 is connected with a temperature detecting device.

The upper end of the outer box body 23 is also connected with an oil inlet adjusting device 21, and the oil inlet adjusting device 21 comprises:

the oil inlet housing 211, wherein the oil inlet housing 211 fixedly penetrates through the upper end of the outer box body 23, and the lower end of the oil inlet housing 211 is provided with an oil outlet which is communicated with an oil inlet at the upper end of the inner box body 24;

the filter shell 212, the filter screen is connected to the inner lower end of the filter shell 212;

the sealing seat 2125 is fixedly connected to the upper end of the inner box 24, the sealing seat 2125 is communicated with an oil inlet at the upper end of the inner box 24, an installation groove 217 is formed in the upper end of the sealing seat 2125, and the installation groove 217 is used for installing the lower end of the filter shell 212;

the matching sleeve 213 is sleeved on the outer side of the sealing seat 2125 in a sliding manner, and a second matching surface 216 is arranged on the outer side of the matching sleeve 213;

The two ends of the linear motor 214 are respectively connected with the lower end of the oil inlet housing 211 and the upper end of the matching sleeve 213;

the U-shaped seat 218, the opening of the U-shaped seat 218 is arranged towards the filtering shell 212, the upper horizontal section of the U-shaped seat 218 penetrates into the oil inlet shell 211 in a sliding manner, one side, close to the sealing seat 2125, of the lower horizontal section of the U-shaped seat 218 is provided with a first matching surface 215, the second matching surface 216 is contacted with the first matching surface 215, the first matching surface 215 and the second matching surface 216 are both inclined surfaces, and the height of one side, close to the sealing seat 2125, of the first matching surface 215 is higher than the height of one side, far from the sealing seat 2125, of the first matching surface 215;

the mounting plate 219, mounting plate 219 fixed connection is on the upper horizontal segment of U-shaped seat 218, fixedly connected with a plurality of horizontal oil feed pole 220 on the mounting plate 219, the filtration shell 212 outer wall sets up the confession horizontal oil feed pole 220 gets into horizontal through-hole 2226.

Optionally, the filter housing 212 is symmetrically provided with connection grooves 2127 on the left and right sides, and the oil inlet adjusting device 21 further comprises two groups of limiting devices, where the limiting devices include:

the limiting block 2121, wherein the limiting block 2121 is fixedly connected to the inner wall of the oil inlet housing 211, and a rotating groove is formed in the lower portion of the limiting block 2121;

The upper part of the supporting rod 2122 is rotationally connected with the inner wall of the rotating groove, and a spring is fixedly connected between the supporting rod 2122 and the inner wall of the oil inlet shell 211;

and a limit ball 2123 fixedly connected to the lower end of the support rod 2122, wherein the limit ball 2123 is used for being connected into the connecting groove 2127.

The oil temperature adjusting device of the invention can be independent of the oil tank or connected with the oil tank; the oil temperature adjusting device can be used for performing cooling treatment through the oil temperature adjusting device when return oil enters an oil tank;

the working principle and beneficial effects of the technical scheme are as follows: when the filter housing 212 is installed, the oil inlet housing 211 is opened, then the filter housing 212 is inserted into the installation groove 217, so that the outer side of the lower end of the filter housing 212 is sealed through the sealing seat 2125, the filter housing 212 is pressed downwards to drive the supporting rod 2122 to swing around the limiting block 2121, and when the filter housing 212 is lowered to a connection position with the sealing seat 2125, the limiting ball 2123 connected with the supporting rod 2122 can be connected into the connection groove 2127, and limiting of the filter housing 212 through the limiting ball 2123 and the supporting rod 2122 is realized; wherein, the filter shell 212 can be directly clamped or inserted with the seal seat 2125, and the filter shell 212 can be conveniently installed and replaced by being matched with the limiting device;

After the filter shell 212 is installed, the linear motor 214 is controlled to drive the matching sleeve 213 to move upwards, the left and right opposite U-shaped seats 218 can be made to approach each other through the matching of the first matching surface 215 and the second matching surface 216, so that the horizontal oil inlet rods 2120 connected with the U-shaped seats 218 are correspondingly inserted into the filter shell 212, wherein the horizontal oil inlet rods 2120 can be connected with oil return at different positions, oil return at different positions can be synchronously input into the filter shell 212 for filtering and then enter the inner box 24 for cooling, the U-shaped seats 218 and the horizontal oil inlet rods 2120 connected with the U-shaped seats can be symmetrically arranged on the front side and the rear side of the filter shell 212, oil return 9 at different directions can be conveniently entered into the filter shell 212, and the actual installation environment can more conveniently select which horizontal oil inlet rod 2120 enters the oil return 9.

An embodiment 4, on the basis of any one of embodiments 1 to 3, a hydraulic oil pipe network of a power plant EH control system state maintenance training device is divided into a plurality of first areas, each first area at least comprises a key hydraulic oil pipeline, and each key hydraulic oil pipeline is a sub-area;

the power plant EH control system state maintenance training device further includes: the hydraulic oil pipe network evaluation device, hydraulic oil pipe network evaluation device includes:

The detection module is used for detecting key hydraulic oil pipeline parameters in each subarea, and the key hydraulic oil pipeline parameters comprise: hydraulic oil pressure, hydraulic oil temperature and hydraulic oil flow rate of key parts of the hydraulic oil pipeline;

the second storage module stores: the position of each first area and each sub-area, the starting use time of the key hydraulic oil pipeline, and the historical abnormal information and the abnormal influence level of the key hydraulic oil pipeline, wherein the historical abnormal information comprises the historical abnormal frequency;

the first evaluation module is used for determining the actual evaluation value of each subarea based on the detection module and the second storage module;

for the actual evaluation value of the ith sub-zone of the L-th first zone, M is the number of key parts of the ith sub-zone of the L-th first zone, N is the number of key hydraulic oil pipeline parameters of the ith sub-zone of the L-th first zone,the detection value of the h key hydraulic oil pipeline parameter of the j key part of the ith sub-area of the L first area is +.>A reference value of the h key hydraulic oil pipeline parameter of the j key part of the ith sub-zone of the L first zone,/for the h key hydraulic oil pipeline parameter of the j key part of the ith sub-zone of the L first zone>Detection value of h key hydraulic oil pipeline parameter of j-1 th key part of the ith sub-area of the L th first area, +. >The detection value of the h key hydraulic oil pipeline parameter of the j+1th key position of the ith sub-region of the L first region, wherein the j-1th key position, the j key position and the j+1th key position are adjacent key positions; />An abnormal influence level for the ith sub-area of the L-th first area, +.>Abnormal frequency of the ith sub-region which is the L-th first region; />For the current duration of the hydraulic oil line used corresponding to the ith sub-zone of the L-th first zone,/-, for example>The current rated total use time length of the hydraulic oil pipeline corresponding to the ith sub-area of the L-th first area is longer; when the actual evaluation value of each subarea is not in the corresponding preset range, an alarm device is used for alarming and prompting the position of the corresponding subarea;

the second evaluation module is used for determining evaluation values of the first areas based on the first evaluation module;

for the evaluation value of the L-th first region, W is the number of sub-regions in the L-th first region, +.>For the actual evaluation value of the ith sub-area of the L-th first area, +.>A reference evaluation value for the ith sub-region of the L-th first region;

the sorting module is used for sorting the evaluation values of the first areas from large to small, and can carry out priority overhaul on the first areas with large evaluation values and needs key overhaul;

The display unit is used for displaying the ordering result of the ordering module and the position of the corresponding first area.

The beneficial effects of the technical scheme are as follows: dividing a hydraulic oil pipe network of an EH control system state maintenance training device of a power plant into a plurality of first areas, wherein each first area at least comprises a key hydraulic oil pipeline, each key hydraulic oil pipeline is a sub-area, and key hydraulic oil pipeline parameters in each sub-area are detected; then based on the comparison of the actual detection value and the reference value of the key hydraulic oil pipeline parameter in each subarea, the historical abnormal frequency, the abnormal influence level (the historical abnormal frequency is high, the abnormal influence level is large and needs to be detected in a key way) and the comparison of adjacent key parts, the specific evaluation of each key hydraulic oil pipeline is realized, so as to determine the actual state of each key hydraulic oil pipeline, and then when the actual evaluation value of each subarea is not in the corresponding preset range, an alarm device is used for alarming and prompting, and the position of the corresponding subarea is prompted, so that a user is reminded of overhauling the key hydraulic oil pipeline; and based on the evaluation value of the subareas in the first area, the evaluation value of the whole first area is determined, so that comprehensive evaluation of the whole first area is realized, and when the state of a single subarea is normal, but the state abnormality of the whole first area is considered (although a single pipeline is normal, the relevance among pipelines is considered, and the state of the whole first area needs to be considered), a user can be timely reminded of adjusting the overhaul training device.

Embodiment 5, on the basis of any one of embodiments 1 to 4, as shown in fig. 8 and 10, further includes a heat dissipating device 20, where the heat dissipating device 20 includes:

the heat dissipation box 201 is fixedly connected to the inner wall of the outer box body 23, and an opening is formed in one side, close to the inner box body 24, of the heat dissipation box 201; the first rotating shaft 202, two ends of which are respectively connected with inner walls of two opposite sides of the heat dissipation box 201 in a rotating way, a first driving device for driving the first rotating shaft 202 to rotate is arranged in the heat dissipation box 201, a plurality of fan blades 2013 are arranged on the first rotating shaft 202, and a first bevel gear 203 is also arranged on the first rotating shaft 202; a fixed block 204 fixedly connected to the inner wall of the heat dissipation box 201; the worm 205 is rotationally connected with the fixed block 204, a second bevel gear 206 is arranged at one end of the worm 205, and the first bevel gear 203 and the second bevel gear 206 are in meshed transmission; a worm wheel 207 rotatably connected to the heat dissipation case 201 through a rotation shaft provided up and down, and the worm 205 is engaged with the worm wheel 207 to be driven; a second connecting rod 209, a first end of which is rotatably connected to the upper side of the worm wheel 207, and a second end of the second connecting rod 209 is connected to a first end of a third connecting rod 2010; the connection housing 2011 is fixedly connected with the inner wall of the heat dissipation box 201, a movable plate 2012 is slidably connected in the connection housing 2011, one end of a first connection rod 208 is connected to the movable plate 2012, the other end of the first connection rod 208 penetrates out of the connection housing 2011 and is rotatably connected with the second end of the third connection rod 2010, a connection spring is connected between the movable plate 2012 and the inner wall of the connection housing 2011, an electric conductor is fixedly connected to the movable plate 2012, and a magnet 21 is connected in the connection housing 2011;

The electric conductor moves the magnetic induction line in the magnetic field of the cutting magnet 21 left and right, and generates induction current which is transmitted to the temperature detection device through a circuit to supply power.

The first driving device, the temperature detection device and the water pump are respectively and electrically connected with the controller;

the working principle and beneficial effects of the technical scheme are as follows: by controlling the first driving device, the first rotating shaft 202 and the fan blades 2013 on the first rotating shaft can be driven to rotate, so that air cooling and heat dissipation of the inner box 24 are realized; in the rotation process of the first rotating shaft 202, the worm 205 is driven to rotate by the meshing of the first bevel gear 203 and the second bevel gear 206, the worm 205 drives the worm wheel 207 to rotate, the worm wheel 207 rotates to drive the second connecting rod 209 connected with the worm wheel 207 to rotate, the second connecting rod 209 drives the movable plate 2012 and the conductor 2014 to move left and right through the third connecting rod 2010, the conductor 2014 moves the magnetic induction line in the magnetic field of the cutting magnet 21 left and right, and induction current is generated to be transmitted to the temperature detection device through a circuit to supply power; according to the technical scheme, the first driving device can realize air cooling and heat dissipation and power supply for the temperature detection device, and the water pump and the first driving device can be controlled to work according to the detection result of the temperature detection device.

It will be apparent to those skilled in the art that various modifications and variations can be made to the present invention without departing from the spirit or scope of the invention. Thus, it is intended that the present invention also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.

Claims (9)

1. A power plant EH control system status overhaul training device, comprising:

the hydraulic oil station simulation system comprises a hydraulic oil station simulation system, an execution mechanism group and a critical blocking device (200), wherein the hydraulic oil station simulation system conveys hydraulic oil with pressure to the execution mechanism group and the critical blocking device (200) through a hydraulic oil pipeline;

the power plant EH control system state maintenance training device further includes:

the counter is used for counting the working times of the simulated hydraulic oil station;

the first detection device is used for detecting the working parameters of the simulated hydraulic oil station, and the working parameters of the simulated hydraulic oil station comprise: the output oil pressure of the simulated hydraulic oil station, the return oil pressure of the simulated hydraulic oil station and the oil temperature in an oil tank (101) of the simulated hydraulic oil station;

the timer is used for metering the starting time and the ending time of each work of the simulated hydraulic oil station;

the second detection device is used for detecting the working parameters of the corresponding execution device when the simulated hydraulic oil station works, and the execution device comprises: an actuator group and a emergency shutoff device (200);

The first storage module is used for storing detection results of the counter, the first detection device, the timer and the second detection device;

the first evaluation device is used for periodically evaluating the state maintenance training device of the EH control system of the power plant, and evaluating the working reliability of the state maintenance training device of the EH control system based on the detection values of the counter, the first detection device, the timer and the second detection device in the preset time period and the historical detection values stored in the first storage module.

2. The power plant EH control system condition maintenance training apparatus of claim 1, wherein the actuator assembly includes an oil motor assembly, the oil motor assembly including: the main valve oil motor is used for controlling a main valve of the steam turbine, the valve oil motor is used for controlling a regulating valve of the steam turbine, the steam turbine is provided with a heat supply valve, and the heat supply valve oil motor is used for controlling the heat supply valve.

3. The power plant EH control system condition maintenance training apparatus of claim 1, wherein said actuator assembly comprises: the control type actuating mechanism and the switch type actuating mechanism are arranged, and each integrated block of the actuating mechanism is provided with an unloading valve (3).

4. The power plant EH control system condition maintenance training apparatus of claim 2, wherein said simulated hydraulic oil station comprises: oil tank (101), oil pump (103), control block (102), oil filter (104), overflow valve, EH terminal box, the oil-out of oil tank (101) is connected the oil inlet of oil pump (103), the high-pressure oil pipe is connected to the oil-out of oil pump (103), high-pressure oil pipe is connected with the overflow valve, be connected with oil filter (104) on the oil return line of oil tank (101), install control block (102) and EH terminal box on oil tank (101), simulation hydraulic oil station still includes: standard equipment for alerting, indicating and controlling the relative oil pressure, oil temperature, oil level of a simulated hydraulic oil station.

5. The power plant EH control system state maintenance training apparatus according to claim 4, wherein said oil supply apparatus of said simulated hydraulic oil station includes two main oil pumps and a cooling pump, and the power supply of said main oil pumps has a specification of 5.5KW, 380VAC, 50HZ three phases, and the power supply of said cooling pump has a specification of 1.5KW, 380VAC, 50HZ three phases; the oil pump output pressure of the simulated hydraulic oil station is set to be 0-21 MPa, the overflow valve works when the pressure of the high-pressure oil pipe reaches 17+/-0.2 MPa, and the simulated hydraulic oil station is provided with a test electromagnetic valve (19); the heat supply regulating valve adopts a rotary butterfly valve design.

6. The power plant EH control system condition maintenance training apparatus of claim 1, wherein the simulated hydraulic oil station further comprises: an oil temperature adjusting device, the oil temperature adjusting device comprising:

the refrigerator comprises an outer box body (23), wherein an inner box body (24) is arranged in the outer box body (23), a temperature-adjusting water pipe (25) is wound on the outer wall of the inner box body (24), the temperature-adjusting water pipe (25) and a temperature-adjusting water tank form water circulation through a water pump, and the temperature-adjusting water tank is connected with a refrigerating device;

the outer wall of the inner box body (24) is connected with a temperature detection device.

7. The power plant EH control system state maintenance training device according to claim 6, wherein the upper end of the outer box (23) is further connected with an oil inlet adjusting device (21), and the oil inlet adjusting device (21) comprises:

the oil inlet shell (211), the oil inlet shell (211) fixedly penetrates through the upper end of the outer box body (23), and an oil outlet is arranged at the lower end of the oil inlet shell (211) and is communicated with an oil inlet at the upper end of the inner box body (24);

the filter comprises a filter shell (212), wherein a filter screen is connected to the inner lower end of the filter shell (212);

the sealing seat (2125), the sealing seat (2125) is fixedly connected to the upper end of the inner box body (24), the sealing seat (2125) is communicated with an oil inlet at the upper end of the inner box body (24), an installation groove (217) is formed in the upper end of the sealing seat (2125), and the installation groove (217) is used for installing the lower end of the filter shell (212);

The matching sleeve (213) is sleeved on the outer side of the sealing seat (2125) in a sliding manner, and a second matching surface (216) is arranged on the outer side of the matching sleeve (213);

the two ends of the linear motor (214) are respectively connected with the lower end of the oil inlet housing (211) and the upper end of the matching sleeve (213);

the U-shaped seat (218), the opening of the U-shaped seat (218) faces the filtering shell (212), the upper horizontal section of the U-shaped seat (218) penetrates into the oil inlet shell (211) in a sliding mode, one side, close to the sealing seat (2125), of the lower horizontal section of the U-shaped seat (218) is provided with a first matching surface (215), the second matching surface (216) is in contact with the first matching surface (215), the first matching surface (215) and the second matching surface (216) are both inclined surfaces, and the height of one side, close to the sealing seat (2125), of the first matching surface (215) is higher than the height of one side, far away from the sealing seat (2125), of the first matching surface (215);

the installation board (219), installation board (219) fixed connection is on the last horizontal segment of U-shaped seat (218), fixedly connected with a plurality of horizontal oil feed pole (220) on installation board (219), filter shell (212) outer wall setting confession horizontal through-hole (2226) that horizontal oil feed pole (220) got into.

8. The power plant EH control system state maintenance training device according to claim 7, wherein the filtering shell (212) is symmetrically provided with connecting grooves (2127) on the left and right sides, the oil inlet adjusting device (21) is further provided with two groups of limiting devices, and the limiting devices comprise:

The limiting block (2121), wherein the limiting block (2121) is fixedly connected to the inner wall of the oil inlet shell (211), and a rotating groove is formed in the lower portion of the limiting block (2121);

the upper part of the supporting rod (2122) is rotationally connected with the inner wall of the rotating groove, and a spring is fixedly connected between the supporting rod (2122) and the inner wall of the oil inlet shell (211);

and the limiting ball (2123) is fixedly connected to the lower end of the supporting rod (2122), and the limiting ball (2123) is used for being connected into the connecting groove (2127).

9. The power plant EH control system state maintenance training device according to claim 1, wherein the hydraulic oil pipe network of the power plant EH control system state maintenance training device is divided into a plurality of first areas, each first area at least comprises a key hydraulic oil pipeline, and each key hydraulic oil pipeline is a sub-area;

the power plant EH control system state maintenance training device further includes: the hydraulic oil pipe network evaluation device, hydraulic oil pipe network evaluation device includes:

the detection module is used for detecting key hydraulic oil pipeline parameters in each subarea, and the key hydraulic oil pipeline parameters comprise: hydraulic oil pressure, hydraulic oil temperature and hydraulic oil flow rate of key parts of the hydraulic oil pipeline;

The second storage module stores: the position of each first area and each sub-area, the starting use time of the key hydraulic oil pipeline, and the historical abnormal information and the abnormal influence level of the key hydraulic oil pipeline, wherein the historical abnormal information comprises the historical abnormal frequency;

the first evaluation module is used for determining the actual evaluation value of each subarea based on the detection module and the second storage module;

for the actual evaluation value of the ith sub-zone of the L-th first zone, M is the number of key parts of the ith sub-zone of the L-th first zone, N is the number of key hydraulic oil pipeline parameters of the ith sub-zone of the L-th first zone,the detection value of the h key hydraulic oil pipeline parameter of the j key part of the ith sub-area of the L first area is +.>A reference value of the h key hydraulic oil pipeline parameter of the j key part of the ith sub-zone of the L first zone,/for the h key hydraulic oil pipeline parameter of the j key part of the ith sub-zone of the L first zone>Detection value of h key hydraulic oil pipeline parameter of j-1 th key part of the ith sub-area of the L th first area, +.>The detection value of the h key hydraulic oil pipeline parameter of the j+1th key position of the ith sub-region of the L first region, wherein the j-1th key position, the j key position and the j+1th key position are adjacent key positions; / >An abnormal influence level for the ith sub-area of the L-th first area, +.>Abnormal frequency of the ith sub-region which is the L-th first region; />For the current duration of the hydraulic oil line used corresponding to the ith sub-zone of the L-th first zone,/-, for example>The current rated total use time length of the hydraulic oil pipeline corresponding to the ith sub-area of the L-th first area is longer;

the second evaluation module is used for determining evaluation values of the first areas based on the first evaluation module;

for the evaluation value of the L-th first region, W is the number of sub-regions in the L-th first region, +.>For the actual evaluation value of the ith sub-area of the L-th first area, +.>A reference evaluation value for the ith sub-region of the L-th first region;

a ranking module for ranking the evaluation values of the respective first areas from large to small;

the display unit is used for displaying the ordering result of the ordering module and the position of the corresponding first area.