KR101634041B1 - Motor operated valve performance tester with LOCA chamber - Google Patents

Motor operated valve performance tester with LOCA chamber Download PDF

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Publication number
KR101634041B1
KR101634041B1 KR1020150055746A KR20150055746A KR101634041B1 KR 101634041 B1 KR101634041 B1 KR 101634041B1 KR 1020150055746 A KR1020150055746 A KR 1020150055746A KR 20150055746 A KR20150055746 A KR 20150055746A KR 101634041 B1 KR101634041 B1 KR 101634041B1
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KR
South Korea
Prior art keywords
valve
fluid
stem shaft
motor drive
chamber
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KR1020150055746A
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Korean (ko)
Inventor
방극진
정선철
박경흠
윤철환
김태환
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한국수력원자력 주식회사
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Priority to KR1020150055746A priority Critical patent/KR101634041B1/en
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Publication of KR101634041B1 publication Critical patent/KR101634041B1/en

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M99/00—Subject matter not provided for in other groups of this subclass
    • G01M99/008—Subject matter not provided for in other groups of this subclass by doing functionality tests
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K37/00—Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given
    • F16K37/0075—For recording or indicating the functioning of a valve in combination with test equipment
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L3/00—Measuring torque, work, mechanical power, or mechanical efficiency, in general
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
    • G01L5/12—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for measuring axial thrust in a rotary shaft, e.g. of propulsion plants
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M99/00—Subject matter not provided for in other groups of this subclass
    • G01M99/007—Subject matter not provided for in other groups of this subclass by applying a load, e.g. for resistance or wear testing

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)

Abstract

The present invention relates to a performance testing apparatus for a motor operated valve (MOV) driver having a LOCA chamber for testing the performance of an electric component installed in a power generation facility, and more particularly, The environmental conditions of simulated accident simulations are simulated by measuring the cycling aging test that verifies the reciprocating movement of the motor drive valve (MOV) actuator, the torque that verifies the torque, and the thrust that verifies the axial force. To a performance testing apparatus for a motor-driven valve driver having a locator chamber capable of performing a required performance test by installing a motor drive valve (MOV) driver in a locator chamber.
The present invention relates to a motor for driving a motor which is a test object which is provided in the inside of the rocker chamber 10 and is coupled to the stem shaft 15 and which is provided with a stem shaft 15, A torque meter (30) for measuring the torque of the stem shaft (15) which is electrically connected to the stem shaft (15) projected to the outside of the locker chamber (10) 30. A device for testing the performance of a motor driven valve actuator having a roccal chamber with a load applying means for engaging with a stem axis at a rear end of the stem for applying a load to the stem axis, A hydraulic cylinder 40 having a cylinder rod 41b in which a helical portion 16 is formed on one inner circumferential surface so that the shaft 15 is inserted and spirally engaged and the stem shaft 15 is driven in or out in accordance with forward and reverse rotation, A fluid line 42 connected to the hydraulic cylinder 40, A needle valve 44 formed on the phosphor 42 to open a flow path from the fluid tank 48 to the hydraulic cylinder 40, a flow control valve 46 installed to control the flow amount of the fluid, And a fluid tank (48) connected to the fluid line (42); The torque sensor 30 is connected to the motor drive valve (MOV) driver 20 and the torque meter 30 to cycle the operation time of the motor drive valve driver 20, And a measurement unit 25 for measuring the respective light sources and the like.

Description

[0001] The present invention relates to a motor-operated valve performance tester with a LOCA chamber,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for testing the performance of a motor operated valve (MOV) actuator having a LOCA chamber for testing the performance of an electric component installed in a power generation facility, (MOV) The cycling aging test that verifies the reciprocating motion of the actuator, the torque that verifies the torque, and the thrust that verifies the axial force. To a performance test apparatus for a motor-driven valve driver having a locator chamber capable of performing a required performance test by installing a motor drive valve (MOV)

Generally, among the facilities of nuclear power plants, various types of equipment such as pump drive motor, motor drive valve and air drive valve are installed in the fluid piping system which formed high temperature and high pressure. In order to maintain the structural inherent functions of the equipment, it is important for the safety operation of the power plant through rigorous device verification according to US Federal Regulatory Standards or Korea Nuclear Safety Act.

These valves are mechanical equipment designed to induce, start, shut off, mix, or control the flow of the process fluid, or to control the pressure and temperature of the fluid. When the valves are classified according to the drive source, (Power Operated Valve). The latter, POV, can be divided into an air driven valve and a motor driven valve (MOV) according to the energy source such as hydraulic pressure, pneumatic pressure and electricity. The motor drive valve driver is a device for generating a driving force for driving a valve by a motor and is connected to a stem of the valve in a state of being attached to the valve to close the valve or maintain a desired control opening degree.

Such motor-operated valve actuators must maintain their original properties during the life of the design in the operating environment of the valve being used, and performance testing is required to test these performance before manufacturing or delivery of the valve. In particular, safety-related motor drive valve actuators used in special environments such as nuclear power plants require environment qualification in order to maintain the inherent functions of the LOC (Loss Of Coolant Accident: LOCA) have.

Most motor-operated valves are manufactured by dividing into valve bodies and valve actuators, and the valve bodies applied to the same valve actuators at actual use sites may vary depending on the field.

The performance test of these motor drive valve actuators is based on the cycling aging test that verifies the opening and closing operation status of the motor drive valve (MOV), the measurement of the force applied to the valve stem, It was necessary to develop a facility capable of testing the performance of the motor-operated valve under the LOCA environment condition in order to evaluate whether or not the drive valve would be operated.

Korean Patent Registration No. 10-0963283 (June 4, 2010). Korean Registered Patent No. 10-0332576 (Apr. 1, 2002).

SUMMARY OF THE INVENTION Accordingly, the present invention has been developed in view of the above-described conventional necessity, and it is an object of the present invention to provide a motor control apparatus and a control method thereof that expose a motor drive valve actuator to a LOCA condition, And to provide a performance testing device for a motor-driven valve driver having a locator chamber capable of measuring a thrust and verifying whether the measured result is appropriate for a required performance criterion of a motor drive valve.

According to an aspect of the present invention, there is provided a motor control apparatus comprising a rotor chamber having a stem shaft protruding outwardly on one side thereof, a motor drive valve driver provided inside the rotor chamber and coupled to the stem shaft, And a load applying means for applying a load to the stem shaft at a rear end of the torque meter and coupled to the stem shaft, the torque meter including a torque sensor for measuring a torque of the stem shaft that is electrically connected to a stem shaft protruded to the outside of the torque meter, Wherein the load applying means comprises a cylinder rod in which a spiral portion is formed on one inner circumferential surface so that the stem shaft is inserted and spirally engaged and in which the stem axis is drawn or drawn in accordance with forward and reverse rotation A fluid line connected to the hydraulic cylinder, a fluid line formed on the fluid line, A needle valve for opening a flow path to flow into the hydraulic cylinder from a nozzle, a flow control valve provided for controlling a flow amount of the fluid, and a fluid tank connected to the fluid line; And a measuring unit connected to the motor drive valve driver and the torque meter for measuring rotational torque and thrust, respectively, through cycling with the operation time of the motor drive valve actuator, and current and voltage information applied to the motor drive valve.

The apparatus for testing the performance of a motor-driven valve actuator having a rocker chamber according to the present invention is characterized in that the torque generated in the system axis of the motor-operated valve (MOV) under the LOCA test condition, It is possible to measure the thrust of the motor drive valve by applying the required load to the stem shaft through the flow rate control, as well as to check the cycling test that applies the reciprocating motion of the valve.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a side sectional view showing a performance testing apparatus of a motor-driven valve actuator having a locator chamber according to the present invention,
2 is a circuit configuration diagram of a load applying means which is a substantial part of the present invention;
3 is an operational state view of the cylinder rod in accordance with the rotation of the stem shaft in the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings, but the present invention is not limited thereto. Various modifications may be made without departing from the technical scope and spirit of the present invention.

As shown in FIGS. 1 to 3, the apparatus for testing the performance of a motor-operated valve driver having a locator chamber according to the present invention includes a motor drive valve (MOV) driver, a LOCA It is a test device for measuring the torque and thrust of motor drive valve actuators under test conditions.

The present invention relates to a motor for driving a motor which is a test object which is provided inside a rocker chamber 10 and is coupled to the stem shaft 15 and which is provided with a stem shaft 15, A torque meter (30) for measuring the torque of the stem shaft (15) which is electrically connected to the stem shaft (15) projected to the outside of the locker chamber (10) 30. A device for testing the performance of a motor driven valve actuator having a roccal chamber with a load applying means for engaging with a stem axis at a rear end of the stem for applying a load to the stem axis, A hydraulic cylinder 40 having a cylinder rod 41b in which a helical portion 16 is formed on one inner circumferential surface so that the shaft 15 is inserted and spirally engaged and the stem shaft 15 is driven in or out in accordance with forward and reverse rotation, A fluid line 42 connected to the hydraulic cylinder 40, A needle valve 44 formed on the phosphor 42 to open a flow path from the fluid tank 48 to the hydraulic cylinder 40, a flow control valve 46 installed to control the flow amount of the fluid, And a fluid tank (48) connected to the fluid line (42); The rotational torque and the thrust force are transmitted to the motor drive valve driver 20 and the torque meter 30 through cycling with the operating time of the motor drive valve driver 20 and current and voltage information applied to the motor drive valve 20 And a measuring unit 25 for measuring the temperature.

The stem shaft 15 is provided at one end thereof in the interior of the locator chamber 10 and at the other end thereof through the locator chamber 10 so as to protrude outwardly and extended by a plurality of couplings, The torque meter 30 and the load applying means are electrically connected to the outer circumferential surface of the stem shaft 15 for the performance test of the stem 20.

In the present invention, the torque of the motor drive valve driver 20 is measured, and the measured result is used to evaluate whether or not the motor drive valve driver 20 normally operates under the actual operation conditions. For this purpose, 30 are electrically connected to the stem shaft 15 to measure the torque of the stem shaft 15.

The measured torque value can be confirmed by the tester through the measuring unit 25 connected to the torque meter 30. Since the motor driving valve driver 20 is also connected to the measuring unit 25, The control unit 25 measures the operation and the operation time and the rotation speed of the motor drive valve driver 20 as well as the current and voltage applied to the motor drive valve and measures the rotation torque of the torque meter 30 And is also connected to a pressure gauge 50 to be described later to convert the pressure value applied to the load together with the rotational torque to measure the thrust. Based on this, the motor drive valve driver 20 is normally operated under the actual operating conditions It is possible to evaluate whether or not it is possible.

2, the load applying unit applies a load to the stem shaft 15 by using the hydraulic pressure to test the performance of the motor drive valve driver 20. In this case, A cylinder 40, a fluid line 42, a needle valve 44, a flow control valve 46, and a fluid tank 48.

Wherein the fluid line 42 is arranged to be connected to the hydraulic cylinder 40 and the fluid tank 48 and the needle valve 44 is formed on the fluid line 42 to supply the fluid to the fluid tank 48, The flow control valve 46 is configured to open the flow path so as to be drawn into the hydraulic cylinder 40 and close the flow path so that the fluid is not drawn into the fluid tank 48 from the hydraulic cylinder 40, (Not shown), and is installed on the upper surface 42 to control the movement amount of the fluid drawn out from the hydraulic cylinder 40 and drawn into the fluid tank 48.

A spiral portion 16 having a thread at a predetermined pitch is formed on the outer circumferential surface of the end portion of the stem shaft 15 to which the load applying means is coupled for application of the load, and the spiral portion 16, the stem shaft 15 is inserted and coupled to the cylinder rod 40b in a spiral manner.

Accordingly, the cylinder rod 40b is pulled in or pulled out from the cylinder 40a in accordance with the forward / reverse rotation of the stem shaft 15, and the fluid is drawn out from the cylinder 40a in accordance with the pulling- When the fluid is drawn into the cylinder 40a, the fluid is drawn through the fluid line 42 through the needle valve 44 and the flow control valve 46. When the fluid is drawn out from the cylinder 40a The fluid does not move through the flow path provided in the needle valve 44 but only through the flow path in which the flow control valve 46 is provided.

At this time, pressure is applied during rotation of the stem shaft 15 by the fluid moving through the flow path provided with the flow control valve 46, and in particular, by adjusting the volume of the flow path by adjusting the flow control valve 46, And the thrust is measured by converting the rotational pressure applied to the stem shaft 15 to measure the performance of the motor drive valve driver 20. [

The fluid line 42 is connected to the cylinder 40a and the fluid tank 48 of the hydraulic cylinder 40 by one line and two first and second flow paths 42a and 42b are provided at the middle portion, A needle valve 44 is installed in the first flow path 42a and a flow control valve 46 is installed in the second flow path 42b.

The fluid line 42 is provided with a pressure gauge 50 at the front end of the flow control valve 46 to indicate the pressure of the fluid applied when the motor drive valve actuator 20 is operated. Is preferably connected to the measuring unit 25 so that the tester can monitor the pressure as well as the thrust to be converted into the pressure value.

In the meantime, the rocker chamber 10 of the present invention is designed to expose the motor-driven valve driver 20 to the design reference accident simulation environment as shown in FIG. 1, 10, a steam inlet 11 for introducing steam is provided at an upper portion of the upper portion of the steam generator 10, and a pressure control valve 12 is installed at the upper center to discharge pressure to the outside when the internal pressure rises above a set pressure have.

A water dispersing part 13 is installed on the upper side of the water distributing part 13 so as to adjust the internal humidity of the locating chamber 10 by spraying water with mist, and a drain port 14 is installed in the lower center.

The loca chamber 10 is tested by regulating the internal humidity using the water jet opening 13 at a certain high temperature through the inflow of steam.

According to the present invention configured as described above, the motor drive valve driver (20) is driven by the motor drive valve driver (20) in a state of being exposed to the simulated test environment conditions of the loca chamber (10) simulating a design basis accident simulation environment Torque, and thrust of the motor drive valve driver, thereby evaluating whether the motor drive valve driver maintains its proper function even under actual power plant design basis accident environment conditions.

10: LOCA chamber, 11: steam inlet,
12: pressure regulating valve, 13: water distributing part,
14: a drain, 15: a stem shaft,
16: spiral part, 20: motor drive valve actuator,
25: measuring section, 30: torque meter,
40: Hydraulic cylinder, 40a: Cylinder,
40b: cylinder rod, 42: fluid line,
42a: first flow path, 42b: second flow path,
44: Needle valve, 46: Flow control valve,
48: fluid tank, 50: pressure gauge.

Claims (4)

A motor drive valve actuator 20 which is provided inside the locator chamber 10 and is coupled to the stem shaft 15 and which is a test object; A torque meter 30 for measuring the torque of the stem shaft 15 which is electrically connected to the stem shaft 15 protruded to the outside of the locator chamber 10 and rotated, A device for testing the performance of a motor-driven valve actuator having a loz chamber with a load applying means for engaging a stem shaft (15) and applying a load to the stem shaft (15)
The load applying means is provided with a cylinder rod 40b in which a helical portion 16 is formed on one inner circumferential surface so that the stem shaft 15 is inserted and spirally engaged and the stem shaft 15 is moved in or out in accordance with forward and reverse rotation A fluid line 42 connected to the hydraulic cylinder 40 so as to allow the fluid to flow from the fluid tank 48 into the hydraulic cylinder 40; A needle valve 44 for opening the flow path, a flow control valve 46 for controlling the flow amount of the fluid, and a fluid tank 48 connected to the fluid line 42; The torque sensor 30 is connected to the motor drive valve (MOV) driver 20 and the torque meter 30 to cycle the operation time of the motor drive valve driver 20, And a measuring unit (25) for measuring the temperature of the fluid in the chamber (10). The method according to claim 1,
Wherein the fluid line (42) is provided with a pressure gauge (50) at the front end of the flow control valve (46) to indicate the pressure of fluid applied in operation of the motor drive valve actuator (20) Performance test equipment of motor drive valve actuators equipped with. The method according to claim 1,
The fluid line 42 is connected to the cylinder 40a and the fluid tank 48 of the hydraulic cylinder 40 by one line and has two first and second flow paths 42a and 42b at an intermediate portion thereof. Wherein a needle valve (44) is provided in the first flow path (42a) and a flow control valve (46) is provided in the second flow path (42b). The motor drive valve Actuator performance testing device. The method according to claim 1,
A spiral portion 16 having a thread at a predetermined pitch is formed on the outer circumferential surface of the end portion of the stem shaft 15 to which the load applying means is coupled and the spiral portion 16 is formed on the inner circumferential surface of the cylinder rod 40b And the stem shaft (15) is inserted and coupled to the cylinder rod (40b) in a spiral coupling manner.
KR1020150055746A 2015-04-21 2015-04-21 Motor operated valve performance tester with LOCA chamber KR101634041B1 (en)

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KR1020150055746A KR101634041B1 (en) 2015-04-21 2015-04-21 Motor operated valve performance tester with LOCA chamber

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KR1020150055746A KR101634041B1 (en) 2015-04-21 2015-04-21 Motor operated valve performance tester with LOCA chamber

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20210150819A (en) 2020-06-04 2021-12-13 김병국 apparatus for motor testing

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100332576B1 (en) 1999-09-29 2002-04-17 이종훈 Method for Determining Operability of Motor Operated Valves
JP2002365166A (en) * 2001-06-11 2002-12-18 Chubu Electric Power Co Inc Testing device and test method for electrically-driven actuator for valve opening/closing
KR200377628Y1 (en) * 2004-12-22 2005-03-14 한국수력원자력 주식회사 Valve performance tester
KR20090095908A (en) * 2008-03-06 2009-09-10 한국기계연구원 Apparatus for performance test of motor operated valve actuator
KR20090127664A (en) * 2008-06-09 2009-12-14 두산모트롤주식회사 Apparatus for load testing of actuator

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100332576B1 (en) 1999-09-29 2002-04-17 이종훈 Method for Determining Operability of Motor Operated Valves
JP2002365166A (en) * 2001-06-11 2002-12-18 Chubu Electric Power Co Inc Testing device and test method for electrically-driven actuator for valve opening/closing
KR200377628Y1 (en) * 2004-12-22 2005-03-14 한국수력원자력 주식회사 Valve performance tester
KR20090095908A (en) * 2008-03-06 2009-09-10 한국기계연구원 Apparatus for performance test of motor operated valve actuator
KR100963283B1 (en) 2008-03-06 2010-06-11 한국기계연구원 Apparatus for performance test of motor operated valve actuator
KR20090127664A (en) * 2008-06-09 2009-12-14 두산모트롤주식회사 Apparatus for load testing of actuator

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20210150819A (en) 2020-06-04 2021-12-13 김병국 apparatus for motor testing

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