JP2014500423A - Mobile testing machine for servo system of hydraulic actuator of turbine steam valve - Google Patents

Abstract

The present invention is a test apparatus for testing valves including a hydraulic actuator (cylinder) provided for adjusting and opening / closing a steam turbine valve, and a hydraulic servo valve for driving the hydraulic actuator. During the power plant inspection work, the hydraulic system is stopped and the turbine hydraulic system cannot be checked or operated when the hydraulic supply is interrupted. Disclosed is a mobile test machine for a hydraulic system servo system of a turbine steam valve for fault diagnosis and performance inspection. The present invention provides a steam valve hydraulic actuator for a turbine power generation facility and a mobile test machine for a servo system for a hydraulic actuator for a turbine steam valve for determining the quality of the valve.
[Selection] Figure 3a

Description

  The present invention relates to a testing machine for testing hydraulic systems (hydraulic actuators, dump valves, hydraulic servo valves and shut-off valves) of nuclear power plants and thermal power plants. A testing device for testing valves including a hydraulic actuator (cylinder) provided for adjusting and opening / closing a turbine valve and a hydraulic servo valve for driving the hydraulic actuator, and for inspection of a power plant Turbine steam for pre-failure diagnosis and performance inspection before separation of hydraulic actuators in a turbine hydraulic system improved in that inspection and operation of the turbine hydraulic system is impossible when the hydraulic supply is interrupted during (Overhaul) The present invention relates to a mobile testing machine for a servo system of a hydraulic actuator for a valve.

  In general, as shown in FIG. 1, a nuclear power plant is large and includes a steam generator 1 centered on a nuclear reactor, a turbine 2 that is supplied with steam to drive the generator, a generator system 3, and a cooling system. 4, and the amount of power generation is adjusted by operating a steam valve 5 that adjusts the amount of steam supplied to the turbine 2. Here, the steam valve 5 is driven by a hydraulic actuator system 10 of a turbine steam valve to supply steam to the turbine 2 and shut off when the turbine 2 is tripped.

  As shown in FIG. 2, the hydraulic actuator system 10 for the turbine steam valve includes the hydraulic signal line 12 of the emergency stop system 17 (EMERGENCY TRIP SYSTEM) and the hydraulic signal line of the overspeed prevention system 16 (OVER SPEED TRIP SYSTEM). 13 is connected to the hydraulic actuator system 10 of the turbine steam valve, and these hydraulic signals are used as hydraulic supply and cutoff signals for the main hydraulic supply line 15 of the hydraulic actuator.

  On the other hand, when a trip occurs in the power generation turbine system, the signal pressure supply (hydraulic pressure) is shut off, the main hydraulic pressure supply line 15 of the turbine steam valve hydraulic actuator 10 is shut off, and the turbine steam valve hydraulic actuator system 10 When the operation is stopped, the steam supplied to the turbine is shut off to obtain the safety of the turbine system.

  Thus, the signal of the hydraulic signal line 12 of the emergency stop system 17 and the signal of the hydraulic signal line 13 of the overspeed prevention system 16 are transmitted via the emergency stop solenoid valve 19 attached to the hydraulic actuator 10 of the turbine steam valve. , Acting as a hydraulic signal to the quick oil drain device 21 inside the hydraulic actuator 20 and the main hydraulic supply shutoff valve 11 of the hydraulic actuator system 10 of the turbine steam valve. This signal is supplied to the main hydraulic pressure supply line 15 from the drive servo valve 22 of the hydraulic actuator 20, thereby supporting the rapid oil drain device 21, and the hydraulic oil in the hydraulic actuator 20 is rapidly discharged. Avoid draining oil.

  On the other hand, when the electrical signal due to various abnormalities in the turbine system or the rotational speed of the turbine exceeds the specified speed, the emergency stop valve 18 is operated by the operation of the overspeed prevention system 16 and the hydraulic actuator 20 of the turbine steam valve is operated. The supplied hydraulic signal is cut off, the hydraulic pressure in the hydraulic actuator 20 is quickly drained, and the hydraulic actuator 20 moves backward to shut off the steam supply to the turbine, and the drive servo valve 22 and the main hydraulic pressure supply are cut off. The valve 11 is activated to cut off the hydraulic pressure supply of the main hydraulic pressure supply line 15 supplied to the drive servo valve 22.

  As described above, the hydraulic actuator of the turbine steam valve plays a very important role in the power generation system of the power plant, and is responsible for the safety of the entire system.

  On the other hand, the turbine 2 (especially a steam turbine) usually has a plurality of steam valves 5, and the steam valves are very important in power generation facilities, such as supplying and shutting off steam to the turbine, or functioning to bypass the turbine. It is a device that plays a role.

  Thus, conventionally, a hydraulic supply device for checking and testing valves of a hydraulic actuator system of a steam turbine and a test device using the same have been used. As an example, Patent Document 1 (Title: Hydraulic Valve) Performance testing apparatus and method).

  However, since the conventional test apparatus is provided as a fixed facility inside the power plant, there is a problem that it requires a large installation area and is inefficient in terms of cost. In addition, since the hydraulic supply of the hydraulic system is interrupted at the time of inspection in the conventional test equipment, the troublesomeness that the corresponding parts must be separated from the power generation facility for inspection, and the separated parts have the test equipment. Since it has to be moved to a specific place, there are problems such as inefficiency such as high time and cost.

  Turbine steam valve hydraulic systems, unlike general industrial machinery, have no downtime and are used for a very long time. The system must be inspected and repaired, and the performance must be inspected to determine whether to continue using it. Therefore, there is a need for a mobile testing machine that can be downsized and ensure mobility so that it is easy to access the test object for pre-failure diagnosis and performance inspection before separation of hydraulic actuators in the turbine hydraulic system. Has been.

Korean Patent Registration No. 555344

[Disclosure of the Invention]

  The present invention has been made in order to solve the above-described problem, and in a state where a hydraulic generator (hydraulic system) of a hydraulic actuator that is a core device of power generation equipment is stopped, the hydraulic pressure in the turbine hydraulic system is It is possible to determine whether or not to maintain a hydraulic actuator by using a hydraulic generator for movement for pre-failure diagnosis and performance inspection before separating the actuator. The purpose is to provide a mobile tester for servo system of hydraulic actuator of turbine steam valve that can guarantee the maintenance quality.

  According to an embodiment of the present invention for achieving the above object, a hydraulic actuator for a turbine steam valve for determining the quality of a hydraulic actuator and a valve provided in a turbine power generation facility is movable for a servo system. A testing machine comprising a testing machine main body, a hydraulic pump for supplying test oil to the valve, and a hydraulic hose reel connected to the hydraulic pump for supplying hydraulic pressure to the valve and capable of adjusting its length Provided with a hydraulic pressure generating means, a moving means provided at a lower part of the main body of the tester, for freely moving the main body of the tester, and an operation switch for driving the tester, provided on the main body of the tester. Electrically connected to the test device drive panel, the test physical quantity display panel that is installed close to the test device drive panel and displays the test physical quantity, and the test device drive panel and the test physical quantity display panel. Is, the information of each experimental subject into data, to provide a hydraulic working machine mobile tester for servo system control measurement box and comprising a turbine steam valve to display it.

  It further includes a simulated servo cylinder provided at the upper end of the tester main body for performing a simulated test of the hydraulic actuator of the turbine steam valve.

  The simulated servo cylinder is driven by a single acting cylinder system.

  The control measurement box further includes a table that is foldably provided on a side surface of the tester main body and is provided via a cylinder that is supported on one side of the tester main body. And a portable computer is provided.

  The test physical quantity display panel is provided with a main oil amount display device of the test oil, a servo valve leakage oil amount display device, and a test pressure display device, and these display devices are diagrammed by a drive circuit and displayed on the front of the panel. Is done.

  The tester body is provided with a carver for protecting the test physical quantity display panel and preventing the test oil from being scattered, and a display for displaying a device circuit inside the tester inside the carver. A panel is provided.

  The display panel includes a transparent display board on which device circuits are printed, and an LED module that is provided inside the display board and emits light to the display board under the control of a PCB.

  The main body of the tester is provided with a main power supply connecting part for controlling on / off, the main power supply connecting part is provided with a plurality of power supply parts, and an exposed surface of the power supply part is used for preventing reverse rotation of the electric motor and working. A protective cover is provided to prevent electric shock.

  According to the present invention, even when the hydraulic system of the hydraulic actuator is stopped during periodic maintenance and inspection of the power plant, the hydraulic actuator of the turbine steam valve is attached to the power generation system via the mobile tester. Testing and checking are possible, and testing and checking for valves (servo valves, shut-off valves, dump valves, etc.) that drive hydraulic actuators are possible. As a result, inefficient conventional problems caused by separating valves from equipment for inspection can be improved, maintenance time can be shortened, cost can be saved, and precision can be reduced. These tests have the effect of improving the performance reliability of the turbine steam valve hydraulic actuator and improving the maintenance quality after maintenance, and improving the operating efficiency of the power plant.

It is a systematic diagram of conventional nuclear power generation. It is a hydraulic system block diagram which shows the hydraulic system applied to the system of the conventional nuclear power generation. FIG. 3A is a configuration diagram illustrating a front view of a mobile test machine for a hydraulic actuator servo system of a turbine steam valve according to an embodiment of the present invention. FIG. 3 b is a configuration diagram showing a side view of a mobile tester for a hydraulic actuator servo system of a turbine steam valve according to an embodiment of the present invention. FIG. 3c is a block diagram showing a plan view of a mobile test machine for a hydraulic actuator servo system of a turbine steam valve according to an embodiment of the present invention. FIG. 3d is an internal configuration diagram showing the inside of a mobile tester for a hydraulic actuator servo system of a turbine steam valve according to an embodiment of the present invention. It is a block diagram which shows the structure of the single-piece test apparatus part of the main body upper part of the movable tester for hydraulic actuator servo systems of the turbine steam valve which concerns on one Embodiment of this invention. It is a block diagram which shows the test physical-quantity display panel of the mobile test machine for hydraulic actuator servo systems of the turbine steam valve which concerns on one Embodiment of this invention. It is a block diagram which shows the test machine driving | operation operation panel of the mobile test machine for hydraulic actuator servo systems of the turbine steam valve which concerns on one Embodiment of this invention. It is a block diagram which shows the structure of the hydraulic actuator simulation servo cylinder for the hydraulic actuator simulation test of the mobile tester for hydraulic actuator servo systems of the turbine steam valve concerning one Embodiment of this invention. It is a control block diagram of a mobile tester for a hydraulic actuator servo system of a turbine steam valve according to an embodiment of the present invention. It is a block diagram which shows the structure of the hydraulic actuator which concerns on one Embodiment of this invention. FIG. 10a is an exemplary view for explaining an operating state of the hydraulic actuator according to the embodiment of the present invention. FIG. 10 b is an exemplary view for explaining an operating state of the hydraulic actuator according to the embodiment of the present invention. FIG. 11 a is an exemplary view showing the internal end face configuration of the hydraulic actuator according to an embodiment of the present invention, the end face of the valve used, and the operating state of the valve. FIG. 11B is an exemplary view showing the internal end face configuration of the hydraulic actuator according to the embodiment of the present invention, the end face of the valve used, and the operating state of the valve. FIG. 12a is an exemplary diagram showing an internal end face configuration of a hydraulic actuator according to an embodiment of the present invention and a hydraulic circuit in a test state using the mobile test apparatus of the present invention. FIG. 12B is an exemplary diagram showing an internal end face configuration of a hydraulic actuator according to an embodiment of the present invention and a hydraulic circuit in a test state using the mobile test apparatus of the present invention. FIG. 13A is an exemplary diagram showing an internal end face configuration of a hydraulic actuator according to an embodiment of the present invention and a hydraulic circuit for an internal leakage test of the hydraulic actuator using a mobile test device. FIG. 13 b is an exemplary diagram showing a hydraulic circuit configuration of the hydraulic test apparatus according to the embodiment of the present invention. It is a state figure showing an internal oil leakage test of a shut-off valve concerning one embodiment of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS The safety device of the main power supply connection part of the mobile tester for hydraulic actuator servo systems of the turbine steam valve which concerns on one Embodiment of this invention is shown, (a) is a front view, (b) is a side view. It is a block diagram which shows realization of LED illumination of the system circuit block diagram which concerns on one Embodiment of this invention.

[Best Mode for Carrying Out the Invention]
Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying exemplary drawings.

  3a to 3d are configuration diagrams showing the configuration of a mobile tester for a hydraulic actuator servo system for a turbine steam valve according to an embodiment of the present invention.

  The mobile testing machine of the present invention uses a hydraulic hose reel 33a, 33b through a directional solenoid valve 32 to transmit hydraulic energy generated by a hydraulic pump 31 of a hydraulic generator 30 provided at the lower end to a test block (not shown). ) To supply hydraulic energy to the turbine steam valve hydraulic actuator 20 so that the turbine steam valve hydraulic actuator is installed in the power generation facility even when the system is shut down during periodic inspection. And inspections can be carried out.

  In order to proceed with the above test, a moving wheel 34 that is easy to move is provided at the lower part of the testing machine main body 45, and an operation switch for driving the testing machine is attached to the upper part of the testing machine main body 45. A panel 35, a test physical quantity display panel 36 for displaying the test physical quantity, and a servo simulation cylinder 37 for a hydraulic actuator simulation test are provided at the upper ends of the test machine main body 45, respectively.

  On the other hand, a foldable table 38 is provided on the right side of the testing machine main body 45, and the foldable table 38 is supported by a shoba 39 (pneumatic cylinder). The foldable table 38 is provided with a control measurement box 40 for test progress and data measurement. A portable computer 44 is mounted on the control measurement box 40, and a test display section of the portable computer 44. A test state and a test graph are displayed via 41.

  The control measurement box 40 is configured as a hard case so that it can be easily moved after the test, and can be moved to an adjacent space (office) after the test, and can output test analysis and test data. . In addition, when storing the folding table 38 after the test, there is an advantage that the folding table 38 can be stored in a state in which the handle 42 is pulled and folded on the side surface of the testing machine main body 45. In addition, a transparent reinforced acrylic cover 43 is provided to prevent the test oil body from scattering during the test. More specifically, the carver 43 is provided at the upper end of the tester main body 45 so as to be openable and closable.

  FIG. 4 is a configuration diagram showing a configuration of a single item test apparatus unit in the upper part of the main body of the movable tester for a hydraulic servo system according to one embodiment of the present invention.

  The mobile testing machine of the present invention has the following configuration so that a single product test (valve single test) such as the servo valve 22 (see FIG. 2) and the main hydraulic pressure supply cutoff valve 11 can be performed.

  That is, by separating the drive servo valve 22 of the hydraulic actuator system 10 of the turbine steam valve and attaching it to the test block 50 of the drive servo valve 22 of the hydraulic actuator 20, the function and performance of the drive servo valve 22 can be improved. It can be displayed on the portable computer 44. On the other hand, it is also possible to perform the internal leakage test by attaching the main hydraulic pressure supply cutoff valve 11 to the test block 51 in this manner.

  FIG. 5 is a configuration diagram showing a test physical quantity display panel of the mobile servo tester for a hydraulic servo system according to an embodiment of the present invention.

  The configuration of the test physical quantity display panel 36 includes a main oil amount display device 60, a hydraulic actuator display device (not shown), a servo valve leakage oil amount display device 61, test pressure display devices 62a, 62b, 62c, 62d, and the like. Is provided in front of the panel. Such a test physical quantity display panel 36 displays the physical quantity of the testing machine on the panel so that the user can easily grasp the test physical quantity of each component.

  FIG. 6 is a block diagram showing a test machine operation panel of a mobile test machine for a hydraulic servo system according to an embodiment of the present invention.

  As shown in FIG. 6, the test apparatus drive panel 35 includes an emergency stop button 70, an automatic / manual changeover switch 71, a main pressure indicator 72, an operating temperature indicator 73, an operation button 74, and a warning indicator lamp 75. Is done. As a result, the operator can easily control the apparatus through the test apparatus drive panel 35.

  FIG. 7 is a configuration diagram showing a configuration of a simulated servo cylinder for a simulation test of a hydraulic actuator of a mobile tester for a hydraulic actuator servo system of a turbine steam valve according to an embodiment of the present invention.

  A hydraulic servo simulator 37 according to an embodiment of the present invention is driven by a single-acting cylinder system by simulating a hydraulic actuator similar to a hydraulic actuator of a power plant. Will be restored. As shown in FIG. 4, a servo valve is mounted on the servo valve test block 50, the test block 50 and the simulated servo cylinder 37 are connected to a test apparatus port 81 by piping, and the simulated test proceeds. On the other hand, the spring 80 forms a load on the simulated servo cylinder 37 in the same manner as the hydraulic actuator of the power plant system, and the position sensor 82 is mounted for a servo valve position control test.

  FIG. 8 is a control block diagram of a hydraulic tester and a mobile tester for a hydraulic servo system according to an embodiment of the present invention.

  The control measurement box 40 of the mobile testing machine according to an embodiment of the present invention is provided with various sensor amplifiers 96 and a portable computer 44 at the upper end, and the portable computer 44 and the control PLC 95 are connected to the Ethernet. Information exchange is performed via (registered trademark) (Ethernet (registered trademark)) communication.

  FIG. 9 is a configuration diagram illustrating a configuration of a hydraulic actuator according to an embodiment of the present invention, and FIG. 10A illustrates an internal single surface and a hydraulic circuit of the hydraulic actuator according to an embodiment of the present invention. FIG. 10B is an exemplary view showing an internal end face of the hydraulic actuator according to the embodiment of the present invention and a state where the emergency stop solenoid valve is excited.

  9 to 10b show a state in which the main hydraulic signal line 15 and the emergency stop hydraulic signal line 12 are connected. As a result, when the emergency stop solenoid valve 19 is excited in a state where the hydraulic pressure is supplied to the main hydraulic pressure signal line 15 and the emergency stop hydraulic pressure signal line 12, the main hydraulic pressure supply cutoff valve 11 is opened and applied to the drive servo valve 22. Then, the servo valve is actuated to move the piston 90 of the hydraulic actuator 20.

  Thereby, the opening degree adjustment and interruption | blocking of the turbine steam valve connected with the other end of the hydraulic actuator 20 are made | formed. By adjusting the adjustment amount in such a manner, the power generation amount and the frequency (generally 60 Hz) can be controlled.

  FIG. 11a is an exemplary view showing an internal end face configuration of a hydraulic actuator according to an embodiment of the present invention and an end face of a valve to be used, and FIG. 11b is a turbine hydraulic operation according to an embodiment of the present invention. FIG. 12 a is an exemplary view showing the internal end face configuration of the motive and the end face of the valve to be used, and the operating state of the valve, and FIG. 12 a is an internal end face configuration of the hydraulic actuator according to an embodiment of the present invention; FIG. 12B is an exemplary diagram showing a test hydraulic circuit using the mobile test apparatus of the present invention, and FIG. 12B uses the internal end face configuration of the hydraulic actuator according to one embodiment of the present invention and the mobile test apparatus of the present invention. It is an illustration figure which shows the hydraulic circuit of the test state which was done.

  As shown in the drawings, the mobile testing machine of the present invention can be equipped with an emergency stop solenoid valve test block 101 and a shut-off valve test block 102 between a hydraulic actuator and a valve. The hydraulic signal line 12 and the main hydraulic signal line 15 are cut off, and the other ends of the hydraulic hose reels 33a and 33b (FIG. 13b) are connected to the test lines 104 and 105, and the hydraulic actuator is attached to the power generation system. It is possible to perform operation tests and inspections of hydraulic actuators.

  Further, when the emergency stop solenoid valve 19 is excited in the emergency stop valve 18, the signal hydraulic pressure opens the main hydraulic pressure supply cutoff valve 11, and the test hydraulic pressure is transmitted to the drive servo valve 22, which is driven by the control box of the test apparatus. By driving the servo valve 22, the hydraulic actuator can be inspected and tested in a state where the hydraulic actuator is attached to the power generation system through the hydraulic pressure transmitted from the test apparatus. The test data measured at this time is automatically stored in the portable computer 44.

  When conducting an internal leakage test of the quick oil discharge device 21 provided inside the hydraulic actuator, the emergency stop solenoid valve 19 is excited to form pressure in the actuator quick oil discharge device chamber 106, and then the shutoff valve. 103 is shut off, and after a certain period of time has elapsed, the amount of internal leakage of the rapid oil drainer 21 can be tested with the pressure drop amount of the pressure gauge 107.

  FIG. 13A is an exemplary diagram showing an internal end face configuration of a hydraulic actuator according to an embodiment of the present invention and a hydraulic circuit for an internal leakage test of the hydraulic actuator using a mobile test device. FIG. 14 is an exemplary diagram showing a hydraulic circuit configuration of a hydraulic test apparatus according to an embodiment of the present invention, and FIG. 14 is a state diagram showing an internal oil leakage test of a shutoff valve according to an embodiment of the present invention.

  After separating the servo valve 22 from the hydraulic actuator to be tested, an internal leakage test block 111 of the hydraulic actuator is attached to the mounting surface of the servo valve 22, and the test hydraulic signal line 112 is connected to supply the hydraulic pressure of the test apparatus. Then, after stopping at a certain time, the oil amount of the leaking oil amount meter 110 is read. This amount of leaked oil is automatically stored in the test apparatus portable computer 44.

  On the other hand, after connecting with the test apparatus test lines 104 and 105, the shutoff valves 121 and 122 are shut off, and after a predetermined time has elapsed, it is determined whether or not the leak has occurred due to the pressure drop measured at the pressure measurement ports 120 and 121. At this time, the measurement data is automatically stored in the portable computer 44.

  FIG. 15 is a front view of (a) and a side view of (b) showing a safety device for a main power supply connecting portion of a mobile tester for a hydraulic system servo system of a turbine steam valve according to an embodiment of the present invention. FIG. 16 is a block diagram showing the implementation of LED lighting in the system circuit configuration diagram according to one embodiment of the present invention.

  As shown in FIG. 15, the mobile tester of the present invention is provided with a main power supply connecting part 200 for turning on / off the power supply of the apparatus in the tester main body 45. More specifically, a finishing plate 205 is provided in the testing machine main body 45, a main power switch 202 is provided in the upper part, and a first power supply unit 200a and a second power supply unit 200b are formed respectively. Here, the first power supply unit 200a and the second power supply unit 200b are electrically connected to each other.

  On the other hand, a protective carver (not shown) is attached to the first power supply unit 200a and the second power supply unit 200b, so that an inadvertent electric shock accident can be prevented, and the operator can use the first power supply unit 200a ( After the electric plug is connected to the main power source 1), when the rotation direction of the motor is the reverse method, the electric plug is connected to the second power source unit 200b (main power source 2), so that the electric circuit breaker of the power supply unit After switching off, the rotation direction of the electric motor can be changed by switching and connecting the electric plugs without the trouble of changing the electric cable connecting terminals (3-phase, RST).

  On the other hand, as shown in FIG. 16, a display panel for displaying the apparatus circuits P1 and P2 inside the tester is provided inside the carver 43 (see FIG. 3b) of the mobile test apparatus of the present invention. More specifically, the display panel includes a transparent display panel 300 on which the device circuits P1 and P2 are printed, and an LED module 350 that is provided inside the display board 300 and irradiates the display panel 300 with light under the control of the PCB 500. It consists of.

  Although the present invention has been illustrated and described with respect to specific embodiments, the present invention is not limited to the embodiments described above, and any person having ordinary knowledge in the technical field to which the present invention pertains will be claimed. The present invention can be implemented with various modifications without departing from the spirit of the technical idea of the present invention described in the above.

  Thereby, the visibility of a display board can be improved, such as an operator being able to confirm the circuit system of a testing machine easily.

Claims (8)

A mobile tester for a hydraulic system servo system of a turbine steam valve for determining the quality of a hydraulic system and a valve provided in a turbine power generation facility,
The main body of the testing machine,
A hydraulic pump for supplying test oil to the valve; and a hydraulic pressure generating means connected to the hydraulic pump to supply hydraulic pressure to the valve and including a hydraulic hose reel capable of adjusting the length;
A moving means that is provided at a lower portion of the tester main body to freely move the tester main body;
A test apparatus drive panel provided in the test machine main body and provided with an operation switch for driving the test machine;
A test physical quantity display panel that is installed close to the test apparatus drive panel and displays a test physical quantity;
A hydraulic operation of the turbine steam valve, which is electrically connected to the test apparatus drive panel and the test physical quantity display panel, and includes a control measurement box for converting the test information of each valve into data and displaying the data. Mobile testing machine for motive servo system.   2. The hydraulic actuator servo of a turbine steam valve according to claim 1, further comprising a simulation servo cylinder provided at an upper end of the main body of the test machine for performing a simulation test of the hydraulic actuator of the turbine steam valve. Mobile testing machine for systems.   The mobile tester for a hydraulic system servo system for a turbine steam valve according to claim 2, wherein the simulated servo cylinder is driven by a single-acting cylinder system. The table further includes a table that is foldably provided on a side surface of the tester main body and is provided via a cylinder supported on one side of the tester main body,
The mobile tester for a hydraulic system servo system for a turbine steam valve according to claim 1, wherein the control measurement box and a portable computer are provided at an upper portion in a state where the table is provided. The test physical quantity display panel is:
The main oil amount indicator of the test oil, a servo valve leakage oil amount indicator, and a test pressure indicator are provided, and these indicators are represented by a drive circuit and displayed on the front of the panel. A mobile tester for a hydraulic actuator servo system for a turbine steam valve according to claim 1. The tester main body is provided with a cover for protecting the test physical quantity display panel and preventing scattering of the test oil,
The mobile tester for a hydraulic system servo system for a turbine steam valve according to claim 1, wherein a display panel for displaying a device circuit inside the tester is provided inside the carver. . The display panel is
The display device according to claim 6, further comprising: a transparent display panel on which device circuits are printed; and an LED module that is provided inside the display panel and irradiates light to the display board under the control of a PCB. Mobile testing machine for servo system of hydraulic actuator for turbine steam valve. The main body of the tester is provided with a main power supply connecting part for controlling on / off,
The main power connection unit includes a plurality of power supply units, and an exposed surface of the power supply unit is provided with a protective cover for preventing reverse rotation of the motor and preventing an electric shock of an operator. Mobile tester for hydraulic system servo system of turbine steam valve as described.

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