CN207817151U - A kind of motor-driven valve offline testing device - Google Patents
A kind of motor-driven valve offline testing device Download PDFInfo
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- CN207817151U CN207817151U CN201721603148.XU CN201721603148U CN207817151U CN 207817151 U CN207817151 U CN 207817151U CN 201721603148 U CN201721603148 U CN 201721603148U CN 207817151 U CN207817151 U CN 207817151U
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Abstract
The utility model discloses a kind of motor-driven valve offline testing devices, including：Three-phase circuit protection location, voltage transformation unit, three-phase circuit monitoring unit, commutation unit and time stroke test unit, wherein, three-phase circuit protection location includes the first output branch and the second output branch, three-phase circuit monitoring unit is set to the three-phase circuit protection location first and exports on the outlet line of branch, voltage transformation unit is arranged in series in the second output branch road, commutation unit and the time stroke test unit are connected in parallel between multiple output ends of voltage transformation unit, pass through said electric valve offline testing device, motor-driven valve to be tested is recorded to be converted to the stroke of full-gear by full off state and be converted to the stroke of full off state by full-gear, motor-driven valve is accurately tested by fully closed to standard-sized sheet and standard-sized sheet to the fully closed time by introducing the connecting terminal of external time tester quickly.
Description
Technical field
The utility model is related to the service technique fields of nuclear power station, and in particular to a kind of electrically operated valve off-line test device.
Background technology
Existing to test the work of electrically operated valve in two kinds of situation in nuclear power maintenance process, a kind of situation is spare electricity
Dynamic valve needs to test the time of electrically operated valve switch valve and valve rod travel before preparing to be installed to pipeline, motor-driven valve upstream
In the case of distribution board function whole is normal, need two people in motor-driven valve location, and motor-driven valve is on pipeline, test is electronic
Valve, and two people is needed to be contacted by phone and motor-driven valve location personnel at the distribution board of upstream, it is linked up caused by environmental disturbances
It is unsmooth, the operating status of motor-driven valve is controlled by operating the switch above distribution board, to achieve the purpose that test, and it is electronic
Valve site environment is complex, and many places are beside radioactivity pipeline, and there is also elevated pressures and temperature for some pipelines, and there are industry
Security risk and radiation risk need acquisition valve rod to be converted to standard-sized sheet shape by full off state when testing motor-driven valve on electronic valve body
The stroke of state and the stroke that full off state is converted to by full-gear, at the same time the operating personnel of distribution board need on distribution board
For motor-driven valve by fully closed to standard-sized sheet and standard-sized sheet to the fully closed time, which is all that tester listens distribution board with stopwatch with ear at present
Switch internal actuating of relay sound variation judges the actuation time of motor-driven valve.
Another situation is after carrying out Disintegration overhaul to electrically operated valve, it is also desirable to the time to electrically operated valve switch valve and valve
The throw of lever is tested, nuclear power plant shut down overhaul when, many electrically operated valves be required for carry out strip inspection, at present for
Test after motor-driven valve strip inspection is that motor-driven valve is first transported back scene to be attached to above pipeline, repeats the previous case and is surveyed
Examination, which, which needs distribution board service work is waited for all to terminate to reach normal work, adjusts and could carry out, if this kind of situation
It was found that motor-driven valve returns after dress there are exception, electrically operated valve must be transported back and be disintegrated again, can not only cause to increase work in this way
It measures, and the duration can be caused to lag, influence pipeline performance, it is final to influence unit progress.
In view of the above-mentioned problems, currently no effective solution has been proposed.
Utility model content
It for the defects in the prior art, can be to electricity the utility model discloses a kind of motor-driven valve offline testing device
Dynamic valve carries out off-line test, avoids the occurrence of that the testing time is inaccurate, is not easy to link up between tester in test process, workload
Big problem.
A kind of motor-driven valve offline testing device, including：Three-phase circuit protection location, voltage transformation unit, three-phase circuit monitoring are single
Member, commutation unit and time stroke test unit, wherein three-phase circuit protection location includes the first output branch and the second output
Branch, three-phase circuit monitoring unit are set to three-phase circuit protection location first and export on the outlet line of branch, voltage transformation unit
It is arranged in series in the second output branch road, commutation unit and time stroke test unit are connected in parallel on the multiple of the voltage transformation unit
Between output end.
Further, in above-mentioned technical proposal, three-phase circuit protection location includes the first output line, the second output line and the
Three output lines, wherein the first output line, the second output line and third output line constitute the first output branch, the second output line and
Third output line constitutes the second output branch.
Further, voltage transformation unit includes：Transformer, rectifier bridge, filter capacitor and the first rectifier diode；Wherein, become
The input terminal of depressor is connect with the second output branch of three-phase protective unit, and the output end of transformer and the input terminal of rectifier bridge connect
It connects, filter capacitor is connected in parallel between two output ends of rectifier bridge, and the first rectifier diode is connected in the output end of rectifier bridge
An output end on；The output end of rectifier bridge is the output end of voltage transformation unit.
Further, voltage transformation unit further includes：
What concatenated first current-limiting resistance and the first light emitting diode, the first current-limiting resistance and the first light emitting diode were constituted
Whole, commutation unit and time stroke test unit are parallel relationship.
Further, commutation unit includes：Coil, normally open push button switch and the normally closed push button switch of first contactor,
In, after normally open push button switch is in parallel with the normally opened contact of first contactor, coil and normally closed push button switch with first contactor
Series connection, the normally-closed contact of first contactor are series at the first output line.
Further, time stroke test unit includes：Valve opening test circuit and pass valve test circuit；
Wherein, valve opening test circuit includes valve opening button switch and is tested back with the concatenated valve opening of valve opening button switch
Road, valve opening test loop include series connection forming circuit with lower part：The coil of second contactor, the normally closed of third contactor are touched
Point, the normally-closed contact of second contactor, the second light emitting diode, the second current-limiting resistance, external testing time power input terminal
Normally closed test connecting terminal is limited with valve opening, wherein one end of valve opening button switch is connected to an output end of voltage transformation unit,
The other end is connected between external testing time power input terminal and the normally closed test connecting terminal of valve opening limit, second contactor
Normally opened contact be series at first output line.
Further, valve opening test circuit further includes third current-limiting resistance, third light emitting diode, and valve opening limits normally opened survey
It tries a little and the coil of the first relay；
Wherein, after third current-limiting resistance and third light emitting diode are connected, second contactor and third contactor are connected in parallel on
Normally-closed contact both ends；After valve opening limits the coil series connection of normally opened test contacts and the first relay, it is connected in parallel on the first current limliting
The whole both ends that resistance and the first light emitting diode are constituted, the normally-closed contact of the first relay are connected on valve opening and limit normally closed survey
It tries between line terminals and second contactor.
Further, above-mentioned test device according to the present utility model, close valve test circuit include close valve button switch with
And with close valve button switch concatenated passs valve test circuit, it includes the third contactor that series connection is formed into a loop to close valve test circuit
It is coil, the normally-closed contact of second contactor, the normally-closed contact of third contactor, the 4th light emitting diode, the 4th current-limiting resistance, outer
Portion's testing time power input terminal and pass valve limit normally closed test contacts, wherein the one end for closing valve button switch is connected to change
An output end of unit is pressed, the other end, which is connected to external testing time power input terminal and closes valve, limits normally closed test contacts
Between, the normally opened contact of third contactor is series at first output line.
Further, above-mentioned test device according to the present utility model, close valve test circuit further include the 5th current-limiting resistance,
5th light emitting diode closes the normally opened test contacts of valve limit and the second relay；
Wherein, after the 5th current-limiting resistance and the 5th light emitting diode are connected, it is connected in parallel on the coil and second of third contactor
The both ends of the normally-closed contact of contactor close after valve limits the coil series connection of normally opened test contacts and the second relay and are connected in parallel on valve opening
The whole both ends of normally opened test contacts and the first relay composition are limited, the normally-closed contact of the second relay, which is connected on, closes valve limit
Between the normally closed test connecting terminal in position and third contactor.
Further, above-mentioned test device according to the present utility model further includes between valve opening circuit and pass valve circuit
By the second rectifier diode access internal auxiliary power supply terminal.
It is using the advantages of the technical solution of the utility model：
On the one hand：Electrically operated valve off-line test device compact is easy to install, the side easy to operate during testing motor-driven valve
Just, three-phase dynamic electricity cable need to be only connected to the electrically operated valve off-line test device by user, then by the electrically operated valve off-line test
The output power cable of device and corresponding limit switch signal cable are connected to the required electrically operated valve debugged, so that it may to pass through this
Electrically operated valve off-line test device operates motor-driven valve, to achieve the purpose that off-line test electrically operated valve, whole process one
Individual can complete, and reduce manpower consumption and the workload of operation process, reduce the complexity of test job, and keep away
Exempt from that industrial premises is gone to operate the industry security risk brought.
On the other hand, time stroke test unit is by valve opening circuit, close diode indicator light in valve circuit light and
Extinguish, record motor-driven valve acquisition valve rod is converted to the stroke of full-gear by full off state and is converted to fully closed shape by full-gear
The stroke of state, by introduce external time tester connecting terminal quickly by accurately test motor-driven valve by it is fully closed to standard-sized sheet with
Standard-sized sheet is to the fully closed time, to solve that the testing time is inaccurate, the undesirable situation of telephonic communication.
Description of the drawings
Fig. 1 is a kind of motor-driven valve offline testing device circuit diagram of the utility model embodiment.
Specific implementation mode
Technical solutions of the utility model are described in detail below in conjunction with attached drawing, following embodiment is only used for more
It the technical solution of the utility model is clearly demonstrated, therefore is intended only as example, and the utility model cannot be limited with this
Protection domain.
In the embodiments of the present invention, a kind of motor-driven valve offline testing device is provided, including：Three-phase circuit is protected
Unit, voltage transformation unit, three-phase circuit monitoring unit, commutation unit and time stroke test unit, wherein three-phase circuit protection is single
Member includes the first output branch and the second output branch, and it is defeated that three-phase circuit monitoring unit is set to three-phase circuit protection location first
On the outlet line of out branch, voltage transformation unit is arranged in series in the second output branch road, commutation unit and time stroke test list
Member is connected in parallel between multiple output ends of the voltage transformation unit, and the first output branch is used to power for measured device.Second is defeated
Out branch is then depressured by voltage transformation unit, is powered later for commutation unit and time stroke test unit.
Fig. 1 is a kind of motor-driven valve offline testing device circuit diagram of the utility model embodiment.
Further, in conjunction with Fig. 1, in above-mentioned technical proposal, three-phase circuit protection location includes the first output line U, second
Output line V and third output line W, wherein the first output line U, the second output line V and third output line W constitute the first output branch
Road, meanwhile, the second output line V and third output line W constitute the second output branch.
Further, above-mentioned voltage transformation unit includes：Transformer T, be made of four rectifier diodes D6, D7, D8, D9 it is whole
Flow bridge, filter capacitor C and the first rectifier diode D10；Wherein, the second output of the input terminal of transformer and three-phase protective unit
Branch (including second output line V and third output line W) connects, and the output end of transformer and the input terminal of rectifier bridge connect, filter
Wave capacitance C is connected in parallel between two output ends of rectifier bridge, and the first rectifier diode D10 is connected in the output end of rectifier bridge
On one output end；The output end of rectifier bridge is the output end of voltage transformation unit.
Further, above-mentioned voltage transformation unit further includes：
Concatenated first current-limiting resistance R1 and the first light emitting diode D10, the first current-limiting resistance R1 and the first light-emitting diodes
Entirety, commutation unit and the time stroke test unit that pipe D10 is constituted are parallel relationship.
Further, commutation unit includes：Coil K0, normally open push button switch 1 and the normally closed push button switch of first contactor
2, wherein after normally open push button switch 1 is in parallel with first contactor normally opened contact K0', the first contactor K0 with first contactor
It connects with normally closed push button switch 2, the first contactor normally-closed contact K0 " of the coil K0 of first contactor is series at the first output
Line.
Further, time stroke test unit includes：Valve opening test circuit and pass valve test circuit；
Wherein, valve opening test circuit includes valve opening button switch 3 and is tested back with the concatenated valve opening of valve opening button switch
Road, valve opening test loop include series connection forming circuit with lower part：Coil K1, the third contactor of second contactor are normally closed to be touched
Point K2 ", second contactor normally-closed contact K1 ", the second light emitting diode D4, the second current-limiting resistance R4, external testing time power supply
Input terminal 8 and valve opening limit normally closed test connecting terminal P8, P10, wherein one end of valve opening button switch is connected to transformation list
One output end of member, the other end is connected to external testing time power input terminal 8 and valve opening limits normally closed test terminals
Between sub- P8, P10, the second contactor normally opened contact K1' of second contactor K1 is series at first output line.
Further, valve opening test circuit further includes third current-limiting resistance R2, third light emitting diode D2, and valve opening limit is normal
Open the coil K3 of test contacts P4, P6 and the first relay；
Wherein, after third current-limiting resistance R2 and third light emitting diode D2 connects, it is connected in parallel on the coil K1 of second contactor
With the both ends of third contactor normally-closed contact K2 "；Valve opening limits the coil string of normally opened test contacts P4, P6 and the first relay K3
After connection, be connected in parallel on the whole both ends that the first current-limiting resistance R1 and the first light emitting diode D1 are constituted, the first relay it is normally closed
Contact K0 " is connected on valve opening and limits between normally closed test connecting terminal P8, P10 and the coil K1 of second contactor.
Further, above-mentioned test device according to the present utility model, close valve test circuit include close valve button switch 4 with
And with close valve button switch concatenated passs valve test circuit, it includes the third contactor that series connection is formed into a loop to close valve test circuit
Coil K2, the normally-closed contact K1 " of second contactor, the normally-closed contact K2 " of third contactor, the 4th light emitting diode D5, the 4th
Current-limiting resistance R5, external testing time power input terminal 9 and pass valve limit normally closed test contacts P9, P11, wherein close valve and press
One end of button switch 4 is connected to an output end of voltage transformation unit, and the other end is connected to external testing time power input terminal 9
And between closing normally closed test contacts P9, P11 of valve limit, the normally opened contact K2' of third contactor is series at first output line.
Further, above-mentioned test device according to the present utility model, it further includes the 5th current-limiting resistance to close valve test circuit
R3, the 5th light emitting diode D3, valve limit normally opened test contacts P5, P7 and the second relay K4 are closed；
Wherein, after the 5th current-limiting resistance R3 and the 5th light emitting diode D3 series connection, be connected in parallel on third contactor coil K2 and
Coil K4 " the strings that valve limits normally opened test contacts P5, P7 and the second relay are closed at the both ends of second contactor normally-closed contact K1 "
Whole two that valve opening limits the relay coil K3 compositions of normally opened test contacts P4, P6 and the first relay are connected in parallel on after connection
End, the normally-closed contact K4 " of the second relay, which is connected on, closes the line that valve limits normally closed test connecting terminal P5, P7 and third contactor
It encloses between K2.
Further, above-mentioned test device according to the present utility model further includes between valve opening circuit and pass valve circuit
By the second rectifier diode D11 access internal auxiliary power supplies terminal 7.
Further, three-phase circuit monitoring unit includes：At least one set of current transformer and ammeter, wherein in Fig. 1 institutes
In the embodiment shown, including 3 groups of current transformers and ammeter, the Current Transmit 1 and the ammeter T1 connect, institute
State Current Transmit 2 and ammeter T2 series connection, the Current Transmit 3 and ammeter T3 series connection, above-mentioned electricity
Current transformer CT1, CT2 and CT3 are socketed in respectively on outlet line U, V and W of the first output branch, to incude main electricity
The electric current of each outlet line of road protection location.In other cases, main circuit monitoring unit can otherwise with master
The outlet line of circuit protection unit connects, the connecting terminal drawn with the electric current on inductive output circuit, the first outlet line
P1, P2, P3 are used to power for motor-driven valve to be tested.
The application method of motor-driven valve offline testing device is discussed in detail below in conjunction with above-mentioned apparatus.
Entire test process must all monitor whether the reading of tri- ammeters of T1, T2, T3 is consistent, if any relatively large deviation,
It must stop immediately and check reason.
The limit switch of motor-driven valve is closed type：
The first step verifies limit switch type and wiring：To verify be closed type valve opening limit switch a access p8,
p10；The pass valve limit switch b of closed type is accessed into p9, p11 again；Motor-driven valve power cable to be debugged is accessed into p1, p2, p3 afterwards.
Second step, power transmission confirm that voltage transformation unit is available：External three-phase dynamic electricity source is linked into the motor-driven valve off-line test
Device, closes breaker 5, and transformer T obtains electric, and rectification filtering circuit obtains electric, and voltage adds to D1 through R1, and power supply indicator D1 is by point
Bright, voltage transformation unit is working properly.
Third walks, and it is consistent with phase needed for motor-driven valve to be debugged to verify power phase：Motor-driven valve to be debugged is adjusted to manually
Intermediate any position, does not touch limit switch, presses valve opening button switch 3, motor-driven valve traffic direction is observed, if the motor-driven valve
Valve run toward closing direction, which proves to differ using the actually required phase of valve of power phase and motor-driven valve now
It causes, needs to be adjusted, then stop pressing switch button 3, press commutation button 1, first contactor K0 obtains electric actuation, K0 at this time
Normally closed point K0 " is disconnected, and opened point K0', which is closed, completes power supply commutation.
4th step tests the fully closed stroke and time to standard-sized sheet of motor-driven valve：By ShiShimonoseki valve button switch 4, third contactor
Coil K2 be attracted, the normally closed point K2 " of third contactor is disconnected, opened point K2' is closed, while the 5th diode D3 is lit, electricity
The valve of dynamic valve is run towards closing direction, and until closing valve limit switch b actions, the circuits K2 are cut off at this time, and normally closed point K2 " is closed
It closes, opened point K2' disconnections, the valve of motor-driven valve is out of service, while the 4th diode D5 is lit.At this time done on valve rod
Good label, then external valve opening position time collection point p12 and p13 are accessed into timer -- unidirectional relay-protection tester, wherein
P12 and p13 is connected in parallel on the both ends of the normally opened contact K1' of second contactor, then unidirectional relay-protection tester is adjusted a 48V
DC voltage turns off output after mixing up, by 48V cathode access internal auxiliary power supply terminal 7, and anode is accessed external testing
Time power input terminal 8 checks that all wiring are normal, starts unidirectional relay-protection tester, and second contactor K1 obtains electric suction
It closing, the normally closed point K1 " of second contactor is disconnected, and opened point K1' is closed, and motor-driven valve starts from closed positions toward evolution to operation,
Timing starts, until the valve opening limit switch a actions of motor-driven valve, the coil K1 dead electricity release of second contactor, second contactor
Normally closed point K1 " be closed, opened point K1' is disconnected, and the second diode D4 is lit, and timing stops, at this time the timer record time
As the time required to the entire stroke of motor-driven valve valve opening, valve rod position out of service at this time is with the length initially to make marks
The entire stroke length of electrically operated valve, if there is deviation that can be adjusted by adjusting the position of limited block, until entire data are in core
It is considered as qualification in power station operation program claimed range.
5th step, debugging motor-driven valve standard-sized sheet to fully closed stroke and time.Press valve opening button switch 3, second contactor
Coil K1 obtain electric, the normally closed point K1 " of second contactor is disconnected, opened point K1' is attracted, while third diode D2 is lit, electricity
The valve of dynamic valve is run towards valve opening position, and until valve opening travel switch a is acted, the circuits K1 are cut off at this time, and second contactor is normal
Close point K1 " is closed, opened point K1' is disconnected, and the valve of motor-driven valve is out of service, while the second diode D4 is lit.At this time
Being marked on valve rod, then external closing direction time collection point p14 and p15 accessed into timer -- unidirectional relay protection is surveyed
Instrument is tried, wherein p14 and p15 are connected in parallel on the both ends of third contactor normally opened contact K2', then unidirectional relay-protection tester is adjusted
One 48V DC voltage turns off output after mixing up, by 48V cathode access internal auxiliary power supply terminal 7, and anode is accessed
External testing time power input terminal 9 checks that all wiring are normal, starts unidirectional relay-protection tester, third contactor
Coil K2 obtain electric actuation, the normally closed point K2 " of third contactor is closed, opened point K2' is disconnected, and motor-driven valve starts from open position toward closing
Direction is run, and timing starts, and until motor-driven valve valve opening limit switch b is acted, the coil K2 dead electricity of third contactor discharges, third
The normally closed point K2 " of contactor K2 are closed, opened point K2' is disconnected, and diode D5 is lit, and timing stops, at this time when timer record
Between be valve rod position out of service at this time the time required to motor-driven valve closes the entire stroke of valve, i.e. with the length that initially makes marks
Stroke of valve length is entirely closed for electrically operated valve.If having deviation that can be adjusted by adjusting the position of limited block, until entirely counting
It is considered as qualification according in nuclear power station operation program claimed range.
The limit switch of motor-driven valve is open type：
The first step verifies limit switch type and wiring：The c accesses of valve opening limit switch p4, p6 for open type will be verified；
The pass valve limit switch d of open type is accessed into p5, p7 again；Motor-driven valve power cable to be debugged is accessed into p1, p2, p3 afterwards.
Second step, power transmission confirm that voltage transformation unit is available：After having executed the first step, then external three-phase dynamic electricity source passed through 6
It is linked into the motor-driven valve off-line test device, closes breaker 5, transformer T obtains electric, and rectification filtering circuit obtains electric, and voltage adds through R1
To D1, power supply indicator D1 is lit, and voltage transformation unit is working properly.
Third walks, and it is consistent with phase needed for electrically operated valve to be debugged to verify power phase：Motor-driven valve to be tested is adjusted manually
To intermediate any position, limit switch is not touched, presses valve opening button switch 3, observes the valve traffic direction of motor-driven valve, if
The valve of the motor-driven valve is run toward closing direction, which proves to use power phase and the actually required phase of motor-driven valve not now
Unanimously, it needing to be adjusted, then stops pressing switch button 3, press commutation button 1, first contactor K0 obtains electric actuation at this time,
The normally closed point K0 " of K0 are disconnected, and opened point K0', which is closed, completes power supply commutation.
4th step tests the fully closed stroke and time to standard-sized sheet of motor-driven valve:By ShiShimonoseki valve button switch 4, third contactor
Coil K2 be attracted, the normally closed points of third contactor K2 " disconnect, and third contactor K2' opened points are attracted, while diode D3 is by point
Bright, the valve of motor-driven valve is run towards closing direction, until closing stroke of valve switch " d actions, the coil K4 of the second relay obtain it is electric,
Normally closed point K4 is disconnected, and the circuits K2 are cut off at this time, and the valve of motor-driven valve is out of service, while the 4th diode D5 is lit.This
When marked on valve rod, then external valve opening position time collection point p12 and p13 are accessed into timer -- unidirectional relay is protected
Tester is protected, then unidirectional relay-protection tester is adjusted into a 48V DC voltage, output is turned off after mixing up, by the 48V cathode
Anode access external testing time power input terminal 8 is checked that all wiring are normal by with accessing internal auxiliary power supply terminal 7,
Start unidirectional relay-protection tester, the coil K1 of second contactor obtains electric actuation, and the normally closed point K1 " of second contactor is disconnected, often
K1' closures are prescribed, motor-driven valve starts from closed positions toward evolution to operation, and timing starts, until motor-driven valve valve opening limit switch c
Action, the coil K1 dead electricity release of second contactor, the normally closed point K1 " of second contactor is closed, opened point K1' is disconnected, and the two or two
Pole pipe D4 is lit, and timing stops, and the timer record time is the entire stroke required time of motor-driven valve valve opening at this time, at this time valve
Bar position out of service is the entire stroke length of electrically operated valve with the length initially to make marks.If there is deviation that can pass through tune
The position of whole limited block is adjusted, until entire data are considered as qualification in nuclear power station operation program claimed range.
5th step, debugging motor-driven valve standard-sized sheet to fully closed stroke and time：Press valve opening button 3, the line of valve opening contactor
K1 is enclosed to be attracted, diode D2 is lit, and the valve of motor-driven valve is run towards valve opening position, until valve opening limit switch c is acted, first
The coil K3 of relay obtains electric, the normally closed point disconnections of K3 ", and the circuits K1 are cut off at this time, and the valve of motor-driven valve is out of service, diode
D4 is lit.It is at this time marked on valve rod, then external closing direction time collection point p14 and p15 is accessed into timing
Device -- unidirectional relay-protection tester, then unidirectional relay-protection tester is adjusted into a 48V DC voltage, it is turned off after mixing up defeated
Go out, by the 48V cathode, terminal 7 examines anode access external testing time power input terminal 9 with accessing internal auxiliary power supply
It is normal to look into all wiring, starts unidirectional relay-protection tester, the coil K2 of third contactor obtains electric actuation, and third contactor is normal
Close point K2 " is disconnected, opened point K2' is closed, and motor-driven valve starts to run from fully open position toward direction is closed, and timing starts, until electronic
Valve closes the d actions of valve limit switch, and the coil K2 dead electricity release of third contactor, the normally closed point K2 " of third contactor is closed, third connects
Tentaculum opened point K2' is disconnected, and the 4th diode D5 is lit, and timing stops, and the timer record time is that motor-driven valve closes at this time
The time required to the entire stroke of valve, valve rod position out of service, is that electrically operated valve is entire with the length initially to make marks at this time
Close stroke of valve length.If there is deviation that can be adjusted by adjusting the position of limited block, until entire data are run in nuclear power station
It is considered as qualification in program claimed range.
To sum up, by valve opening circuit in the utility model embodiment, lighting and putting out for diode indicator light in valve circuit is closed
It goes out, record motor-driven valve acquisition valve rod is converted to the stroke of full-gear by full off state and is converted to full off state by full-gear
Stroke, by introduce external time tester connecting terminal quickly by accurately test motor-driven valve by it is fully closed to standard-sized sheet and entirely
The fully closed time is reached, to solve that the testing time is inaccurate, the undesirable situation of telephonic communication.
Electrically operated valve off-line test device compact is easy to install, simple to operate during testing motor-driven valve, uses
Three-phase dynamic electricity cable need to be only connected to the electrically operated valve off-line test device by person, then by the output of the electrically operated valve off-line test device
Power cable and corresponding limit switch signal cable are connected to the required electrically operated valve debugged, so that it may to pass through the electrically operated valve
Off-line test device operates motor-driven valve, and to achieve the purpose that off-line test electrically operated valve, one people of whole process can
To complete, reduce the manpower consumption of operation process, and avoids industrial premises and operate the industry security risk brought.
In the specification of the utility model, numerous specific details are set forth.It is to be appreciated, however, that the reality of the utility model
Applying example can put into practice without these specific details.In some instances, well known method, knot is not been shown in detail
Structure and technology, so as not to obscure the understanding of this description.
Finally it should be noted that：Above example is only to illustrate the technical solution of the utility model, rather than its limitations；
Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should manage
Solution：It still can be with technical scheme described in the above embodiments is modified, either to which part or whole skills
Art feature carries out equivalent replacement；And these modifications or replacements, it does not separate the essence of the corresponding technical solution the utility model
The range of each embodiment technical solution should all cover in the claim of the utility model and the range of specification.
Claims (10)
1. a kind of motor-driven valve offline testing device, which is characterized in that including：Three-phase circuit protection location, voltage transformation unit, three-phase electricity
Road monitoring unit, commutation unit and time stroke test unit, wherein the three-phase circuit protection location includes the first output branch
Road and the second output branch, the three-phase circuit monitoring unit are set to the three-phase circuit protection location first and export branch
On outlet line, the voltage transformation unit is arranged in series in the second output branch road, the commutation unit and the time row
Journey test cell is connected in parallel between multiple output ends of the voltage transformation unit.
2. test device according to claim 1, which is characterized in that the three-phase circuit protection location includes the first output
Line, the second output line and third output line, wherein first output line, second output line and the third output line
The first output branch is constituted, second output line and the third output line constitute the second output branch.
3. test device according to claim 1 or 2, which is characterized in that the voltage transformation unit includes：Transformer, rectification
Bridge, filter capacitor and the first rectifier diode；Wherein, the of the input terminal of the transformer and the three-phase circuit protection location
Two output branch connections, the output end of the transformer are connect with the input terminal of the rectifier bridge, and the filter capacitor is connected in parallel on
Between two output ends of the rectifier bridge, first rectifier diode is connected to one in the output end of the rectifier bridge
On output end；The output end of the rectifier bridge is the output end of the voltage transformation unit.
4. test device according to claim 3, which is characterized in that the voltage transformation unit further includes：
Concatenated first current-limiting resistance and the first light emitting diode, first current-limiting resistance and the first light emitting diode structure
At whole, described commutation unit and the time stroke test unit be parallel relationship.
5. test device according to claim 2, which is characterized in that the commutation unit includes：The line of first contactor
Circle, normally open push button switch and normally closed push button switch, wherein the normally opened contact of the normally open push button switch and the first contactor
After parallel connection, connect with the coil of the first contactor and the normally closed push button switch, the normally-closed contact of the first contactor
It is series at first output line.
6. test device according to claim 2, which is characterized in that the time stroke test unit includes：Valve opening is surveyed
It tries circuit and closes valve test circuit；
Wherein, the valve opening test circuit includes valve opening button switch and is tested with the concatenated valve opening of the valve opening button switch
Circuit, the valve opening test loop include series connection forming circuit with lower part：The coil of second contactor, third contactor
Normally-closed contact, the normally-closed contact of second contactor, the second light emitting diode, the second current-limiting resistance, external testing time power supply are defeated
Enter terminal and valve opening limits normally closed test connecting terminal, wherein one end of the valve opening button switch is connected to the transformation list
One output end of member, the other end is connected to the external testing time power input terminal and the valve opening limits normally closed test
Between connecting terminal, the normally opened contact of the second contactor is series at first output line.
7. test device according to claim 6, which is characterized in that the valve opening test circuit further includes third current limliting electricity
Resistance, third light emitting diode, valve opening limit the coil of normally opened test contacts and the first relay；
Wherein, after the third current-limiting resistance and the third light emitting diode are connected, it is connected in parallel on the line of the second contactor
The both ends of the normally-closed contact of circle and the third contactor；The valve opening limits normally opened test contacts and first relay
After coil series connection, the both ends of the voltage transformation unit are connected in parallel on, the normally-closed contact of first relay is connected on valve opening limit often
It closes between test connecting terminal and the second contactor.
8. test device according to claim 6, which is characterized in that the pass valve test circuit includes closing valve button switch
And with the concatenated pass valve test circuit of the pass valve button switch, for closing valve test circuit and including series connection forming circuit
The coil of three contactors, the normally-closed contact of second contactor, the normally-closed contact of third contactor, the 4th light emitting diode, the 4th
Current-limiting resistance, external testing time power input terminal and pass valve limit normally closed test contacts, wherein the pass valve button switch
One end be connected to an output end of the voltage transformation unit, the other end is connected to the external testing time power input terminal
And between the pass valve limits normally closed test contacts, the normally opened contact of the third contactor is series at first output line.
9. test device according to claim 8, which is characterized in that the pass valve test circuit further includes the 5th current limliting electricity
Resistance, the 5th light emitting diode close the coil that valve limits normally opened test contacts and the second relay；
Wherein, the 5th current-limiting resistance and the 5th light emitting diode series connection after, be connected in parallel on third contactor coil and
The both ends of the normally-closed contact of second contactor, the pass valve are connected in parallel on institute after limiting normally opened test contacts and the series connection of the second relay
State the whole both ends that valve opening limits normally opened test contacts and the first relay is constituted, the normally-closed contact string of second relay
Pass valve is associated in limit between normally closed test connecting terminal and the coil of the third contactor.
10. test device according to claim 5, which is characterized in that in valve opening circuit and close between valve circuit by the
Two rectifier diodes access internal auxiliary power supply ground terminal.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721603148.XU CN207817151U (en) | 2017-11-27 | 2017-11-27 | A kind of motor-driven valve offline testing device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201721603148.XU CN207817151U (en) | 2017-11-27 | 2017-11-27 | A kind of motor-driven valve offline testing device |
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| CN207817151U true CN207817151U (en) | 2018-09-04 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114459786A (en) * | 2022-01-18 | 2022-05-10 | 岭澳核电有限公司 | Off-line testing method and system for hydraulic system of steam turbine of nuclear power station |
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2017
- 2017-11-27 CN CN201721603148.XU patent/CN207817151U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114459786A (en) * | 2022-01-18 | 2022-05-10 | 岭澳核电有限公司 | Off-line testing method and system for hydraulic system of steam turbine of nuclear power station |
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