JP4969185B2 - Electric valve open / close test method - Google Patents

Description

The present invention relates to an electric valve opening / closing test method for an electric valve on the discharge side of a pump in a condensate system of a power plant.

  In the condensate system of a power plant, a pump is used to cool the steam used in the turbine with seawater in the condenser and to feed the condensed water returned to the water again to the deaerator. A motor-operated valve is provided on the discharge side of the pump. The motor-operated valve is fully opened when the pump is operated to supply water to the condensate system, and is fully closed by a pump stop command to stop supplying water to the condensate system. is doing.

By the way, the motor-operated valve needs to be disassembled and inspected periodically or as necessary. In overhaul, or replacing the torque switch or limit switch, but to work, such as ground glass, it is necessary to the tests after these operations.
Not applicable

  The motorized valves are overhauled and inspected periodically or as necessary, and the torque switch and limit switch are replaced, and the test is carried out after work such as rubbing. However, since the motorized valve at the pump outlet is turned on and off according to the operation / stop of the pump, there is no operation switch for opening and closing the motorized valve in the central control room or at the site, and the motorized valve cannot be opened or closed alone. .

Since the test of the electric valve had to be opened and closed in normal operation and the electric valve to set the same conditions in the control circuit, corresponding when the time condition setting is consuming, also abnormality occurs There was a risk of delay.

The present invention makes it possible to easily perform an open / close test of an electric valve without setting conditions,
In order to open and close the motor-operated valve provided on the discharge side of the pump, a plurality of switching contacts that are turned ON / OFF by a pump operation switch, and the operation auxiliary relay is excited or not activated by ON / OFF of the plurality of switching contacts. Each auxiliary machine breaker to be excited, a switching relay switch to be switched by each auxiliary machine breaker, a motorized valve opening / closing rotating machine that opens and closes a motorized valve to which electric power is supplied via the switching relay switch, and the motorized valve A motor-operated valve opening / closing circuit having a protection circuit that opens / closes the motor-operated valve with the motor-operated valve opening / closing rotating machine by actuating or de-energizing each auxiliary machine circuit breaker when an abnormality detection switch for detecting an abnormality of the motor operates In the above, a connection terminal connected to a contact corresponding to the motor-operated valve opening / closing circuit, a manual switch having a contact that is turned ON / OFF when performing a test, and the manual switch Using a test circuit provided with a test auxiliary relay to be electrified, connecting the connection terminal of the test circuit to a plurality of corresponding connection terminals of the motor-operated valve opening / closing circuit, Regardless of the pump operation switch of the electric valve opening / closing circuit, the manual switch is turned ON / OFF to activate or de-energize the auxiliary machine breakers via the test auxiliary relays. There is provided a motor-operated valve opening / closing test method in which the motor-operated valve opening / closing rotating machine for opening / closing the motor-operated valve is driven via the switching relay switch so that the motor-operated valve opening / closing test can be performed.
The connection terminal of the motor-operated valve opening / closing circuit of the present invention is housed in a female plug, the connection terminal of the test circuit is connected to a male plug, and the female plug and the male plug are combined during testing. An electric valve opening / closing test method is provided, wherein the test circuit is connected to the electric valve opening / closing circuit .

  The abnormality detection switch of the present invention has an open / close contact that turns ON / OFF when the motor-operated valve opening / closing rotating machine rises above the set temperature or exceeds the set torque, and excites / de-energizes the rotating machine open / close switch relay to test The rotating machine temperature switch auxiliary relay provides an electric valve open / close test device having an open / close contact that is excited when the contact of the abnormality detection switch is turned on and stops supplying power to the auxiliary machine breaker.

  The abnormality detection switch of the present invention is a rotary machine switch having an open / close contact that is turned on when the motor-operated valve opening / closing rotating machine rises to a set temperature or exceeds a set torque, and the test switch relay operates the abnormality detection switch. There is provided a motor-operated valve open / close test device having an open / close contact that operates and supplies power to an auxiliary machine breaker.

  In the present invention, the plurality of open / close contacts that are turned ON / OFF by the pump operation switch are the operation open / close contacts that are turned ON / OFF by the pump operation switch, and the motor-operated valve that is the pump open / close contact that is normally turned ON by the pump motor. An open / close test device is provided.

By connecting the connecting pin of the electric valves close circuit to corresponding connection terminals of the electric valve closing test equipment test circuit using an electric valve closing test method of the present invention, ON the auxiliary circuit breaker manually switch・ Because it is connected to the power supply circuit via the open / close contact, the auxiliary circuit breaker is excited regardless of the open / close contact that is turned ON / OFF by the pump operation switch provided in the motorized valve open / close circuit. Switch the relay switch to drive the motorized valve opening and closing rotator and test the motorized valve.

Therefore it is not necessary to open and close the electrically operated valve by setting the same conditions as during normal operation of the control circuit to the test of the electric valve, electric valve is overhauled according periodically or as necessary torque It is possible to easily test after changing the switch or limit switch, or after performing the work such as the arrangement.

Moreover, the motorized valve on / off test device using the motorized valve on / off test method of the present invention de-energizes the auxiliary circuit breaker if the manual switch is turned off even before the test temperature switching contact or torque switching contact is activated when an abnormality is felt. Can respond quickly.

The motor-operated valve opening / closing test apparatus using the motor- operated valve opening / closing test method of the present invention accommodates the connection terminals of the motor-operated valve opening / closing circuit and the test circuit in the male plug and the female plug, thereby further simplifying the labor during the test, In addition, erroneous wiring can be prevented.

An electric valve opening / closing test apparatus using the electric valve opening / closing test method of the present invention will be described with reference to FIGS.

FIG. 1 is a circuit diagram of an electric valve opening / closing circuit 5 to be tested by an electric valve opening / closing test apparatus using the electric valve opening / closing test method of the present invention.

  The motor-operated valve 1 is an outlet valve on the discharge side of a pump installed in the condensate system of the power plant, and is fully opened when water is supplied and fully closed when water is stopped. The motor-operated valve 1 opens when the motor-operated valve opening / closing rotator rotates forward, and closes when the motor-operated valve opening / closing rotating machine rotates in the reverse direction. The terminal plate 2 that supplies power to each winding uvw of the motor-operated valve opening / closing rotating machine that opens and closes the motor-operated valve is switched on when the first auxiliary machine breaker 88A is excited or the second auxiliary machine is shut off. It is connected to the bus 3 via a switching relay switch 88B-1 that is turned on when the machine 88B is excited and a fuse free breaker FFB. The bus 3 is supplied with three-phase AC power of 440 V and 60 Hz.

The electric valve opening / closing circuit 5 is connected to the bus 3 via a step-down transformer 6 and a fuse-free breaker FFB. The step-down transformer 6 is connected to the UW phase of the bus 3 and steps down the 440V power supplied from the bus 3 to 105V.

A torque switch that is one of the abnormality detection switches has torque switching contacts TLa, TLa, TLb, and TLb. It operates when an abnormal torque is generated when the motor-operated valve 1 is opened or closed. The torque switching contacts TLa and TLa that have been turned off are turned on, and the torque switching contacts TLb and TLb that have been turned on are turned off. When the torque switching contact TLa is turned on, the torque switch auxiliary relay 15 is excited and the contact TLX is turned on. In addition, the abnormality detection switch includes a rotating machine temperature switch 49 and its opening / closing contact 49Y. The open / close contact 49Y of the rotary machine temperature switch 49 is normally turned off, and is turned on when it is detected that the temperature exceeds a certain temperature. When the opening / closing contact 49Y of the rotating machine temperature switch is ON, the rotating machine temperature switch auxiliary relay 49X is excited, the temperature opening / closing contact 49X1 is turned OFF, and the temperature opening / closing contacts 49X2, 49X2 are turned ON. The operation opening / closing contact 3TX is turned ON when the condensate pump operation switch is set to the “RUN” position, and turned OFF when it is set to the “STOP” position.

The operation auxiliary relay 17 for the outlet valve of the condensate pump is used for an opening / closing command, and has an auxiliary opening / closing contact 3Xb that is turned OFF in reverse to the auxiliary opening / closing contact 3Xa that is turned ON when excited. One of the first auxiliary machine breakers 88A includes a temperature switching contact 49X1, a pump operation switch contact 3-A. It is connected to one terminal of the step-down transformer 6 via an operation switching contact 3TX that is opened and closed by a CP, an opening and closing contact 51X that opens and closes depending on the state of the condensate pump, pump switching contacts 52Z1 and 52Z2, and an auxiliary switching contact 3Xa of the operation auxiliary relay 17. It is connected.

The other terminal of the first auxiliary machine breaker 88A is connected to the other terminal of the step-down transformer 6 via the position detection switch hb and the torque switching contact TLb. One terminal of the second auxiliary circuit breaker 88B is connected to one terminal of the step-down transformer 6 via the temperature switching contact 49X1 and the auxiliary switching contact 3Xb of the operation auxiliary relay 17. The other terminal of the second auxiliary machine breaker 88B is connected to the other terminal of the step-down transformer 6 via the position detection switch la and the torque contact TLb.

The RED lamp R connected to the auxiliary transformer 8 is in the central control room and the local control center, and lights up red when the position detection switch is turned on when the motor-operated valve is fully open. GREEN lamp G connected to the auxiliary transformer 9 is a central control room and located on the local control center, green lights up when the electric valve is position detecting switch l b fully closed is activated ON. When an abnormality occurs, the rotating machine temperature switch 49 operates and the temperature switching contacts 49X2 and 49X2 of the rotating machine temperature switch auxiliary relay 49X are turned on, so that both the RED lamp R and the GREEN lamp G are lit.

The electrically operated valve opening / closing circuit 5 has connection terminals T212, T232, T242, T262, T312, T332, T342, and T362. A temperature switching contact 49X1 is connected to the connection terminal T212, and a temperature switching contact 49X2 of a rotating machine temperature switch auxiliary relay is connected to the connection terminals T232 and T262. The connection terminal T332 is connected to one end of the rotary machine temperature switch auxiliary relay 49X, and the connection terminal T362 is connected to the open / close contact 49Y of the rotary machine temperature switch 49.

  FIG. 2 is a circuit diagram of a test opening / closing device for testing the electric valve opening / closing circuit of FIG. It consists of two pairs of connection plugs 10 and 11, connection plugs 12 and 13, and a test machine main body 40 that form a male-female pair. The male plug 10 has connection terminals 211, 231, 241, and 261, and the female plug 11 that is paired therewith has connection terminals 212, 232, 242, and 262.

  The male plug 12 has connection terminals 311, 331, 341, and 361, and the female plug 13 that is paired therewith has connection terminals 312, 332, 342, and 362.

The test machine main body 40 has a test rotary machine temperature switch auxiliary relay 49Z that is excited when the open / close contact 49Y of the rotary machine temperature switch 49 provided in the electric valve switching circuit 5 is turned on. The manual switch has contacts 50X, 50Y, 55. When the manual switch is set to the “OFF” position, the contact 55 is turned OFF, the power is turned off, and all other than the “OFF” position are turned ON. The contacts 50X are turned on when the manual switch is set to the "open" position, and are turned off except for the "open" position. The contacts 50Y are turned on when the manual switch is set to the “closed” position, and are turned off except for the “closed” position.

The operation of the motor-operated valve opening / closing circuit tested with the motor-operated valve opening / closing test apparatus using the motor- operated valve opening / closing test method of the present invention will be described with reference to FIG. When the motor-operated valve 1 on the outlet side of the pump installed in the condensate system is in a normal state, the contact FFB-1 of the fuse-free breaker and the open / close contact 49Y of the rotating machine temperature switch are turned OFF, and the torque switch auxiliary relay 15 does not operate, the torque switching contact of the torque switch auxiliary relay is also turned OFF, the rotating machine temperature switch auxiliary relay 49X is in a non-excited state, the temperature switching contacts 49X2, 49X2 are turned OFF, and the temperature switching contact 49X1 is turned ON.

  The condensate pump is used to cool the steam used in the turbine with seawater in the condenser, and send the condensed water returned to the water to the deaerator. The capacity of the condensate pump used here is 560 t / h, and when the rated load (generator output [MWH]) is 1/2 or less, water is fed by one condensate pump (A machine) and rated load When 1/2 is exceeded, the second condensate pump (machine B) is started. In addition, a spare condensate pump (C machine) is provided to regularly switch between the regular machine and the spare machine.

  Initially, the condensate pumps of Aircraft A and Aircraft B are both stopped, and the motor-operated valve is fully closed. When the pump operation switch is set to the “running” position in order to start the condensate pump of the machine A, the pump breaker is turned “on” and the pump motor is put into operation.

The pump operation switch is returned from the “operation” position to the “automatic” position by the force of the spring, and the pump operation switch contact 3-A.CP is turned on. If the motor of the condensate pump of machine A is in a normal state, the switching contact 51X is turned on, and the pump switching contact 52Z1 is turned on when the condensate pump breaker of machine A is “on”. As a result, the electric power from the step-down transformer 6 operates the outlet valve of the condensing pump of the machine A via the temperature switching contact 49X1, the pump operation switch contact 3-A.CP, the operation switching contact 3TX, the switching contact 51X, and the pump switching contact 52Z1. This is supplied to the auxiliary relay 17 and the operation auxiliary relay 17 is excited.

When the operation auxiliary relay 17 is excited, the auxiliary opening / closing contact 3Xa is turned ON, the first auxiliary machine breaker 88A is excited, and the switching relay switch 88A-1 is switched to the ON side. On the other hand, when the operation auxiliary relay 17 is excited at this time, the auxiliary switching contact 3Xb is turned OFF so that the second auxiliary machine breaker 88B is not excited. (When one of the auxiliary switching contact 3Xa and the auxiliary switching contact 3Xb is turned on, the other is turned off so that the first auxiliary circuit breaker 88A and the second auxiliary circuit breaker 88B are excited simultaneously. Not to do that .)

Changeover relay switch 88A-1 is the power from the bus and subjected feeding each winding uvw by is switched to ON, and opening operation of the electric valve 1 rotates forward electric valve closing rotating machine.

  When the outlet valve is fully opened, the position detection switch hb is turned off, the first auxiliary machine breaker 88A is de-energized, the switching relay switch 88A-1 is switched to the OFF side, and the motor-operated valve opening / closing rotator of the motor-operated valve 1 is turned on. The power supply to each winding uvw is stopped, and the motor-operated valve opening / closing rotary machine stops.

Even if the condensate pump of the A machine is stopped, if the condensing pump of the B machine is operating, the pump opening / closing contact 52Z2 is turned ON, the operation auxiliary relay 17 is continuously excited, and the motor-operated valve 1 is held fully open. In this case current flows through the RED lamp R via the position detecting switch ha and torque switching contacts TLb to O N, indicating that the electric valve 1 lights red is fully open.

  When the condensate pump operation switch is set to the “stop” position in order to stop the condensate pump of the machine A, the operation opening / closing contact 3TX is turned off, the operation auxiliary relay 17 is de-energized, the auxiliary opening / closing contact 3Xa is turned off, and the auxiliary opening / closing is turned off. Contact 3Xb is turned ON. As a result, the first auxiliary machine breaker 88A is de-energized and the second auxiliary machine breaker 88B is excited.

  The second auxiliary machine breaker 88B is excited and switches the switching relay switch 88B-1 to the ON side. When the switching relay switch 88B-1 is switched to the ON side, the electric power from the bus is supplied to each winding uvw of the terminal plate 2 in the opposite phase to that described above, and the motor-operated valve opening / closing rotating machine is rotated in the reverse direction. Is closed. When the position detection switch la is turned off and the second auxiliary machine breaker 88B is de-energized, the switching relay switch 88B-1 is switched to the OFF side, and electric power is supplied to each winding uvw of the motor-operated valve opening / closing rotating machine of the motor-operated valve 1. Supply is stopped, and the motor-operated valve opening / closing rotator stops.

  At this time, a current flows in the GREEN lamp G via the position detection switch lb and the torque switching contact TLb, and the green lamp is lit to indicate that the motor-operated valve 1 is fully closed.

By the way, when the load is heavy and a current exceeding the rating flows, there is a differential pressure before and after the motorized valve, the tightening of the ground part is excessive and force is applied to the opening / closing operation, or the valve body and actuator are caught. When the excessive current flows through the motor-operated valve opening / closing rotating machine, the temperature rise is detected by Joule heat and the set value is set. When this occurs, the rotary machine temperature switch 49, which is one of the abnormality detection switches, operates, the rotary machine temperature switch open / close contact 49Y is turned on, the rotary machine temperature switch auxiliary relay 49X is excited, and the temperature open / close contact 49X1. Is turned OFF, and the first auxiliary machine breaker 88A or the second auxiliary machine breaker 88B that is excited at that time is immediately de-energized and protected.

When the temperature switching contacts 49X2 and 49X2 of the rotary machine temperature switch auxiliary relay 49X are turned ON, both the RED lamp R and the GREEN lamp G are lit to notify an abnormal state.

Similar to the rotary machine temperature switch 49 at the fully open position, fully closed position or intermediate position of the motor-operated valve 1, when a load is heavy and a current exceeding the rating flows, when there is a differential pressure before and after the motor-operated valve, If the tightening is excessive and force is applied to the opening / closing operation, or if the valve body or actuator is caught, if an abnormal torque is generated, the temperature of the coil of the motor-operated valve opening / closing rotary machine that is another abnormality detection switch relay operating the Torukusui' switch before the abnormally elevated. Thereby, the torque switching contact TLb that has been turned on is turned off, the torque switching contact TLa that has been turned off is turned on, and the torque switch auxiliary relay 15 is excited.

  The first auxiliary machine breaker 88A or the second auxiliary machine breaker 88B that is excited at that time is immediately de-energized and protected.

  It is necessary to test the motor-operated valve 1 after performing work such as disassembling and replacing the torque switch and limit switch regularly or as necessary.

To perform the test, the male plug and the female plug in the motor-operated valve switching circuit 5 are separated, and the female plug and the male plug of the test circuit are coupled to the separated male plug and female plug, respectively. The first auxiliary machine breaker 88A includes a test rotary machine temperature switch auxiliary relay on / off contact 49Z1, an on / off contact 55 that is turned on / off by a manual switch, an on / off contact 50X that is switched by a manual switch, a position detection switch hb, and a torque on / off contact TLb. To the step-down transformer 6. Therefore, there is no relation to the pump operation switch contact 3-A.CP, the operation opening / closing contact 3TX, the opening / closing contact 51X, the pump opening / closing contact 52Z1, the auxiliary opening / closing contact 3Xa, etc., and the first auxiliary machine breaker 88A is connected to the power circuit.

The second auxiliary circuit breaker 88B is also connected to the step-down transformer 6 via the test rotary machine temperature switch auxiliary relay switching contact 49Z1, the switching contact 55, the switching contact 50Y, the position detection switch la and the torque switching contact TLb.

To test the opening operation of the electric valve 1, the manual switch in the open position, when turning ON the switching contact 50X, test a roll temperature switch auxiliary relay switching contact, switching contact 55, via the switching contact 50X Electric power is supplied to the first auxiliary machine breaker 88A, the first auxiliary machine breaker 88A is excited, and the changeover relay switch 88A-1 is switched to the ON side. When the switching relay switch 88A-1 is switched to the ON side, power from the bus is supplied to each winding uvw of the terminal plate 2, and the motor-operated valve opening / closing rotating machine is rotated forward to open the motor-operated valve 1.

If the outlet valve is fully open in the normal state, the position detection switch hb is opened, the first auxiliary machine breaker 88A is de-energized , the switching relay switch 88A-1 is switched to the OFF side, and the motor-operated valve 1 is opened / closed. The supply of electric power to each winding uvw of the rotating machine is stopped, and the motor-operated valve opening / closing rotating machine stops.

  In order to test the closing operation of the motor-operated valve 1, the manual switch is set to the closed position, the switching contact 50X is turned OFF, and the switching contact 50Y is turned ON. As a result, the first auxiliary machine breaker 88A is de-energized, and power is supplied to the second auxiliary machine breaker 88B via the test rotary machine temperature switch auxiliary relay open / close contact 49Z1, the open / close contact 55, and the open / close contact 50Y. 2 The auxiliary machine breaker 88B is excited.

The second auxiliary machine breaker 88B is excited and switches the switching relay switch 88B-1 to the ON side. When the switching relay switch 88B-1 is switched to the ON side, power from the bus is supplied to each winding uvw in the opposite phase to that described above, and the motor-operated valve opening / closing rotating machine is rotated in reverse to close the motor-operated valve 1. . When the outlet valve is fully closed, the position detection switch la is turned off, the second auxiliary machine breaker 88B is de-energized , the switching relay switch 88B-1 is switched to the OFF side, and the motor-operated valve opening / closing rotator of the motor-operated valve 1 is turned on. The power supply to each winding uvw is stopped, and the motor-operated valve opening / closing rotary machine stops. At this time, a current flows through the GREEN lamp G via the position detection switch lb and the torque switching contact TLb of the torque switch, and it lights in green, indicating that the motor-operated valve 1 is fully closed.

  During the opening / closing operation (intermediate opening), the torque switch is forcibly operated to stop the motor, check the lamp display, and check the alarm output. Also, the fully open and fully closed position detection switches are forcibly operated to stop the motor and check the lamp display.

By the way, when testing, when the load is heavy and a current exceeding the rating flows, there is a differential pressure before and after the motorized valve , the tightening of the ground part is excessive, and force is applied to the opening / closing operation. If the actuator is caught, it will not open and close, so an excessive current will flow. If an excessive current flows to the motor-operated valve opening and closing rotator, a temperature rise will be detected by Joule heat, and if it exceeds the set value, the rotating machine temperature switch 49 will operate. Then, the on / off contact 49Y of the rotating machine temperature switch is turned on, whereby the testing rotating machine temperature switch auxiliary relay 49Z is excited, the testing rotating machine temperature switch auxiliary relay opening / closing contact 49Z1 is turned off, and the testing rotating machine temperature switch is turned on. The auxiliary relay switching contact 49Z2 is turned on. The first auxiliary machine breaker 88A or the second auxiliary machine breaker 88B that is excited at that time is immediately de-energized and protected. Thereby, it is detected that there is an abnormality in the electric valve opening / closing circuit or the like.

Similar to the rotary machine temperature switch 49 at the fully open position, fully closed position or intermediate position of the motor-operated valve 1, when a load is heavy and a current exceeding the rating flows, when there is a differential pressure before and after the motor-operated valve, when tightening force is applied to the excessive opening and closing operation increases, or when there is a catch on the valve body and actuator, Torukusui' switch before the temperature is abnormally elevated in abnormal torque is generated an electric valve closing rotating machine coils operate To do.

Thereby, the torque switching contact TLb that has been turned on is turned off, the torque switching contact TLa that has been turned off is turned on, and the torque switch auxiliary relay 15 is excited. The first auxiliary machine breaker 88A or the second auxiliary machine breaker 88B that is excited at that time is immediately de-energized.

  When an abnormality is found in the electric valve switching circuit 5 under test, the switching contact 55 is manually turned off even before the test rotating machine temperature switch auxiliary relay 49Z or the torque switch auxiliary relay 15 detects the abnormality. Thus, the first auxiliary machine breaker 88A or the second auxiliary machine breaker 88B can be immediately de-energized and quickly protected.

It is a motor-operated valve opening / closing circuit diagram which performs a test with the motor-operated valve opening / closing test apparatus of the present invention. It is a circuit diagram of the motor operated valve opening / closing test apparatus of the present invention. It is a circuit diagram which connected the motor operated valve opening / closing test apparatus of this invention to the motor operated valve switching circuit.

1 Motorized valve 3 Bus 5 Motorized valve switching circuit 6 Step-down transformer 8 Auxiliary transformer 15 Torque switch auxiliary relay 40 Test machine body 49 Rotating machine temperature switch 49Z Test rotating machine temperature switch auxiliary relay 49Z1 Test rotating machine temperature switch auxiliary relay switching contact 55 open / close contact 88A first auxiliary machine breaker 88B second auxiliary machine breaker

Claims (2)

For opening and closing the electric valve provided on the discharge side of the pump, a plurality of the switching contact to be ON · OFF at pump operating switches, operating auxiliary relay by ON · OFF of the plurality of switching contacts is energized or no Each auxiliary machine breaker to be excited, a switching relay switch to be switched by each auxiliary machine breaker, a motorized valve opening / closing rotating machine that opens and closes a motorized valve to which electric power is supplied via the switching relay switch, and the motorized valve A motor-operated valve opening / closing circuit having a protection circuit that opens / closes the motor-operated valve with the motor-operated valve opening / closing rotating machine by actuating or de-energizing each auxiliary machine circuit breaker when an abnormality detection switch for detecting an abnormality of the motor operates In
A connection terminal connected to a contact corresponding to the motor-operated valve opening / closing circuit, a manual switch having a contact that is turned ON / OFF when performing a test, and a test auxiliary relay energized by the manual switch are provided. obtained by using the test circuit,
Corresponding to connect to a plurality of connection terminals, ON · OFF the manual switch independently of the pump operating switch of the electric valve closing circuit during testing of the electric valve closing circuit to test the connection terminal of said test circuit to in the excitation or non-excitation of the respective auxiliary circuit breaker via an auxiliary relay for the test, the electric valve closing rotating machine for opening and closing the electric valve through the changeover relay switch of the electric valve closing circuit electric valve closing test method being characterized in that to allow the opening and closing test of the electric valve to drive the. The connection terminal of the electric valve closing circuit housed in the female plug, the connecting terminals of the test circuit is connected to a male plug, said combining the female plug and the male plug during Test Test The motor-operated valve opening / closing test method according to claim 1 , wherein a circuit is connected to the motor-operated valve opening / closing circuit .

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