CN214534734U - Electric valve control instrument - Google Patents
Electric valve control instrument Download PDFInfo
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- CN214534734U CN214534734U CN202120448917.3U CN202120448917U CN214534734U CN 214534734 U CN214534734 U CN 214534734U CN 202120448917 U CN202120448917 U CN 202120448917U CN 214534734 U CN214534734 U CN 214534734U
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Abstract
The utility model discloses an electric valve controller, which comprises a main circuit, a control circuit and a feedback circuit, wherein the control circuit and the feedback circuit are respectively connected in parallel on the main circuit, and the main circuit is used for realizing the positive and negative rotation of a motor; the control circuit is used for realizing the control of the opening and closing of the electric valve; the feedback circuit is used for indicating the state and the opening and closing state of the electric valve, and the electric valve has the advantages that the state and the opening moment or the closing moment state of the electric valve at a certain moment can be visually seen; the labor intensity of operators is reduced; the automatic adjustment of the power phase sequence can be realized.
Description
Technical Field
The utility model relates to the technical field of valves, especially, relate to an electrically operated valve controller.
Background
In various nuclear power stations, thermal power stations, hydropower stations and large-scale factories, the electric valve is used as important equipment in the system and provides no or no guarantee for normal operation of the system. After the disassembly and maintenance work of the electric valve controlled by the DCS in the nuclear power station is finished, the quality re-identification is executed by an electric test of an operator, due to the design reason, the electric valve cannot be operated on the spot, the main control operator must operate on a computer operation interface through a human interface and a machine interface, a great number of operation tasks are executed during the overhaul of the operators, the operation of the valve is considered in time, the quality re-identification work of the valve is difficult to be smoothly executed, the field operation time of the maintenance personnel is prolonged, and the irradiation dose of the personnel is increased.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an electrically operated valve control appearance through increase the pilot lamp on feedback circuit for show each state, can realize the affirmation to electrically operated valve real-time status, reduced operating personnel's task volume.
The utility model discloses a following technical scheme realizes:
an electric valve controller comprises a main circuit, a control circuit and a feedback circuit, wherein the control circuit and the feedback circuit are respectively connected in parallel on the main circuit, and the main circuit is used for realizing forward and reverse rotation of a motor; the control circuit is used for realizing the control of the opening and closing of the electric valve; the feedback circuit is used for indicating the state of the electric valve and the opening and closing state.
Traditional nuclear power station needs the operation personnel to appraise the electronic product once more to motorised valve disintegration maintenance completion back, but can only operate at computer operation interface through operating personnel, has increased operating personnel's brain hole intensity, the utility model provides an electrically operated valve control appearance can instruct the indicating circuit of electrically operated valve state through increasing in the control appearance, realizes the convenient appraisal to the electrically operated valve.
Preferably, the main circuit comprises three-phase terminals L1, L2, L3 and a neutral terminal, the three-phase terminals L1, L2 and L3 are respectively connected in series with an ac contactor 1KM and an ac contactor 2KM through wires, and then are connected to a voltage input terminal of a main motor M3, and the terminal L1 is connected in series with a current transformer and then is connected to the ac contactor 1 KM.
Preferably, the control circuit comprises a first indicator light, a valve opening circuit, a valve closing circuit, the valve opening circuit and the valve closing circuit which are connected in parallel to the main circuit, and the valve opening circuit and the valve closing circuit are connected through an intermediate relay connected in parallel.
Preferably, the control circuit further comprises a timer and a milliammeter, the timer and the milliammeter are connected to the main circuit in parallel, the timer is used for timing valve opening time or valve closing time, and the milliammeter is used for measuring a current signal in the feedback circuit.
Preferably, the control circuit further comprises a first indicator light connected in parallel to the main circuit, and the first indicator light is used for indicating the power supply state.
Preferably, the D31 port and the D30 port of the feedback circuit are both connected with the motor, and the feedback circuit is connected with the main circuit through a rectifier; the feedback circuit comprises a stroke circuit, a limit circuit, a control circuit, a second indicating circuit, a third indicating circuit, a fourth indicating circuit and a fifth indicating circuit, the stroke circuit, the limit circuit, the control circuit, the second indicating circuit, the third indicating circuit, the fourth indicating circuit and the fifth indicating circuit are connected in parallel, and the second indicating circuit is used for indicating that the opening of the electric valve is finished; the third indicating circuit is used for indicating that the electric valve has an opening moment fault; the fourth indicating circuit is used for indicating the closing of the electric valve; and the fifth indicating circuit is used for indicating that the electric valve has a torque-off fault.
Preferably, the second indicating circuit comprises a second indicating lamp for indicating the opening state of the electric valve; the third indicating circuit comprises a third indicating lamp, and the third indicating lamp is used for indicating the opening torque fault state of the electric valve; the fourth indicating circuit comprises a fourth indicating lamp for indicating the closing state of the electric valve; the fifth indicator circuit includes a fifth indicator light for indicating the electric valve off-torque fault condition.
Preferably, the electric valve controller further comprises a control box, a display screen group, a display lamp group, a switch group and a button group are arranged on the control box, the display screen group is arranged at the top of one side of the control box, the display lamp group is arranged below the display screen group, the switch group is arranged below the display lamp group, the button group is arranged below the switch group, and a power input port, a power output port and a control line output port are further arranged at the bottom of the control box.
Compared with the prior art, the utility model, following advantage and beneficial effect have:
1. through the electric valve control instrument provided by the application, the state and the opening torque or closing torque state of the electric valve at a certain moment can be visually seen by arranging the indicating lamp;
2. through the electric valve control instrument provided by the application, the labor intensity of operators is reduced;
3. through the electric valve control instrument provided by the application, the automatic adjustment of the power phase sequence can be realized.
Drawings
The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principles of the invention. In the drawings:
FIG. 1 is a schematic circuit diagram of a control instrument
FIG. 2 is a schematic diagram of a control circuit
FIG. 3 is a schematic diagram of a feedback circuit
FIG. 4 is a schematic diagram of a main circuit
FIG. 5 is a detailed diagram of a control circuit
FIG. 6 is a detailed diagram of a feedback circuit
FIG. 7 is a schematic view of a control box
Reference numerals:
1-a current display screen; 2-valve position display screen; 3-timing display screen; 4-power supply display lamp; 5-turning on a torque alarm display lamp; 6-turning off the moment alarm display lamp; 7-stroke/torque control change-over switch; 8-automatic phase modulation switch; 9-valve closing button; 10-timer reset button; 11-stop button; 12-valve-opening button; 13-a power switch; 14-a control switch; 15-valve open position display lamp; 16-valve closed position display lamp; 17-power input port; 18-power output port; 19-control line output port.
Detailed Description
To make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the following examples and drawings, and the exemplary embodiments and descriptions thereof of the present invention are only used for explaining the present invention, and are not intended as limitations of the present invention.
Example one
The embodiment discloses an electric valve controller, as shown in fig. 1, which comprises a main circuit, a control circuit and a feedback circuit, wherein the control circuit and the feedback circuit are respectively connected in parallel on the main circuit, and the main circuit is used for realizing forward and reverse rotation of an electric motor; the control circuit is used for realizing the control of the opening and closing of the electric valve; the feedback circuit is used for indicating the state of the electric valve and the opening and closing state.
The electric valve is opened or closed by controlling the switch in the control circuit, and when the control circuit is opened or closed by the switch, the corresponding feedback circuit displays according to the body of the electric valve.
As shown in fig. 4, the main circuit includes three-phase terminals L1, L2, L3 and a zero line terminal, the three-phase terminals L1, L2 and L3 are respectively connected in series with an ac contactor 1KM and an ac contactor 2KM through wires, and then are connected to a voltage input terminal of a main motor M3, the terminal L1 is connected in series with a current transformer and then is connected to the ac contactor 1KM, an external power supply is connected to a power switch 1QF of the controller through a three-phase five-wire cable, and the ac contactor 1KM and the 2KM control the motor M of the valve electric device to realize forward and reverse rotation to open and close the valve. The motor running current is measured and displayed by a current transformer TA to a digital display type ammeter PA.
As shown in fig. 2, the control circuit includes a first indicator light, a valve opening circuit, a valve closing circuit, the valve opening circuit and the valve closing circuit all connected in parallel to the main circuit, and the valve opening circuit and the valve closing circuit are connected through an intermediate relay connected in parallel.
And (3) closing the control switch 2QF, switching on the power supply indicating loop, lighting the power supply indicating lamp 1 and displaying that the power supply is normal.
The working principle of valve opening is as follows:
in fig. 5, when the valve opening start button 2SB is pressed, the coil of the ac contactor 1KM is energized and attracted, and 1KM (5-7) is closed to form self-locking, thereby ensuring that the valve opening loop is continuously energized. The conducting loop is as follows: l3 → 2QF → 1SB → 2SB (1KM 5-7) → 2KM (7-9) → 1KA (9-11) → 2KA (11-13 → 6KA (13-15) → 1KM (coil) → N.
When the valve is opened in place, the open stroke microswitch (D16-D17) in the figure 6 is closed, the 1KA coil of the direct current relay is electrified, the 1KA normally closed contact (9-11) in the figure 5 is disconnected, the 1KM coil is electrified, the 1KM normally open contact in the figure 1 is disconnected, the motor M stops rotating, meanwhile, the 1KA normally open contact (1-5) in the figure 6 is closed, the open indicator lamp 2HL is lightened, and the valve is displayed to be opened in place.
If the normally closed contacts (D8-D9) of the torque-opening switch in the figure 6 are turned off due to the jamming of the valve and the like in the opening process, the 2KA coil is powered off, the 2KA normally open contacts (11-13) in the figure 5 are turned off, the 1KM coil is powered off, and the motor M stops rotating, so that the equipment is effectively protected. Meanwhile, the 2KA normally-closed contacts (1-7) in the graph 6 are closed again from the open state, the indicator lamp 3HL is lightened, and the opening moment is displayed for alarming.
Action principle when closing the valve:
when a valve closing starting button 3SB is pressed, a coil of the alternating current contactor 2KM is electrified and attracted, and a normally open contact (5-19) of the 2KM is closed to form self locking, so that a valve closing loop is ensured to be continuously electrified. The conducting loop is as follows: l3 → 2QF → 1SB → 3SB (2KM5-19) → 1KM (19-21) → 3KA (21-23) → 4KA (23-25) → 7KA (25-27) → 2KM coil → N.
If the electric valve is in a stroke control mode, the switch 2K in fig. 6 is closed before the electric operation. When the valve is electrically closed in place, the closing stroke switch (D20-D21) is closed, the 3KA coil is electrified, the 3KA (21-23) in the figure 5 is disconnected, the 2KM coil is not electrified, and the motor M stops rotating. Meanwhile, the 3KA normally open contacts (1-9) in FIG. 6 are closed, the closing indication loop forms a passage through the 5KA contacts (9-11), the closing indication lamp 4HL is lightened, and the valve is displayed to be closed in place.
If the normally closed contacts (D12-D13) of the off-torque switch in the figure 6 are disconnected due to the fact that a valve is jammed in the closing process, the 4KA coil is powered off, the 4KA normally open contacts (23-25) in the figure 5 are disconnected, the 2KM coil is powered off, the 2KM normally open contact in the figure 4 is disconnected, the motor M stops rotating protection equipment, meanwhile, the 4KA normally closed contacts (1-13) in the figure 6 are closed, an off-torque alarm indicator lamp 5HL is lightened, and off-torque alarm is displayed.
If the electric valve is in the torque control mode, the switch 2K in fig. 6 is turned off before the electric operation. When the valve is electrically closed in place, the 5KA normally-closed contacts (21-23) in the graph 5 are closed, the 2 normally-open contacts (9-11) and (13-15) connected in parallel in the closing stroke indication and closing moment alarm indication loop in the graph 6 are in an open state, and the 5KA normally-closed contacts (21-23) and the 3KA normally-closed contacts (21-23) in the graph 5 are connected in parallel, so that the purpose that the 3KA (21-23) is not disconnected when the closing stroke micro switch (D20-D21) is closed to enable the valve closing loop to lose power is mainly guaranteed, the valve closing loop can be disconnected only when the closing moment switch (D12-D13) acts, and the requirement of moment control is met.
In the closed stroke indication loop of fig. 6, the functions of the contacts of 4KA and 5KA in parallel are as follows: and during torque control, the 5KA normally-open contacts (9-11) are disconnected, and the 4KA normally-closed contacts (9-11) are also in a disconnected state. Therefore, when the closing travel switch (D20-D21) is closed, the 3KA coil is electrified to work, the closing travel indicator lamp 4HL cannot form a passage when the 3KA normally-open contact (1-9) is closed, the 4KA coil is deenergized when the closing torque switch (D12-D13) is operated, the 4KA normally-closed contact (9-11) is restored to be closed, the closing travel indicator circuit can form a passage, the closing valve indicator lamp 4HL is lightened, and the valve is closed in place.
In the torque-off alarm circuit of fig. 6, the contacts 3KA and 5KA are connected in parallel and have the following functions: during torque control, the 5KA normally open contacts (13-15) are disconnected, as the closing travel switches (D20-D21) are closed when the valve is closed in place, the 3KA coil is electrified, the 3KA normally closed contacts (13-15) are disconnected, the closing torque switches (D12-D13) are disconnected at the moment, the 4KA coil is electrified, the 4KA normally closed contacts (1-9) are closed again, the indicator lamp 5HL forms a closed loop, and the closing torque alarm cannot be displayed. And in the valve closing process, if jamming occurs and the like, because the closing stroke is not in place, the closing stroke micro switch (D20-D21) is not closed, the 3KA normally closed contacts (13-15) are in a closed state, the closing torque switch (D12-D13) acts at the moment, the 4KA coil loses power, the 4KA normally closed contacts (1-9) are restored to be closed, the indicator lamp 5HL is lightened, and the closing torque is displayed for alarming.
The control circuit further comprises a timer and a milliammeter, the timer and the milliammeter are connected to the main circuit in parallel, the timer is used for timing valve opening time or valve closing time, and the milliammeter is used for measuring current signals in the feedback circuit.
The working principle of the timer is as follows:
in fig. 5, the switch 2QF is closed, and the timer is powered on to enter a state to be timed. When the valve is opened, the 1KM normally open point is closed, the timer starts to time, and after the valve is opened in place, the 1KM is disconnected, the time is stopped and the numerical value is kept. Manually pressing 4SB clears the timer. When the valve is closed, the 2KM normally-open point is closed, the timer starts to time, and after the valve is closed in place, the 2KM is disconnected, the time is stopped and the numerical value is kept.
The control circuit further comprises a first indicator light which is connected to the main circuit in parallel and is used for indicating the power supply state.
As shown in fig. 3, a D31 port and a D30 port of a feedback circuit are both connected with the motor, and the feedback circuit is connected with the main circuit through a rectifier; the feedback circuit comprises a stroke circuit, a limit circuit, a control circuit, a second indicating circuit, a third indicating circuit, a fourth indicating circuit and a fifth indicating circuit, the stroke circuit, the limit circuit, the control circuit, the second indicating circuit, the third indicating circuit, the fourth indicating circuit and the fifth indicating circuit are connected in parallel, and the second indicating circuit is used for indicating that the opening of the electric valve is finished; the third indicating circuit is used for indicating that the electric valve has an opening moment fault; the fourth indicating circuit is used for indicating the closing of the electric valve; and the fifth indicating circuit is used for indicating that the electric valve has a torque-off fault.
The second indicating circuit comprises a second indicating lamp which is used for indicating the opening state of the electric valve; the third indicating circuit comprises a third indicating lamp, and the third indicating lamp is used for indicating the opening torque fault state of the electric valve; the fourth indicating circuit comprises a fourth indicating lamp for indicating the closing state of the electric valve; the fifth indicator circuit includes a fifth indicator light for indicating the electric valve off-torque fault condition.
Phase modulation circuit theory of operation:
in fig. 5, when the double-control change-over switch 1K is closed, the valve opening button 2SB is pressed when the valve is opened, the intermediate relay 6KA coil is powered on and closed, the 6KA normally open contact (5-7) is closed to form self-locking, the 6KA normally open contact (13-25) is closed to connect the alternating current contactor 2KM coil loop, the 2KM normally open contact is closed in fig. 4, the motor M is powered on to operate, and the valve is opened; the automatic adjustment of the power phase sequence is realized. The conducting loop is as follows: l3 → 2QF → 1SB → 2SB (6KA 5-7) → 2KM (7-9) → 1KA (9-11) → 2KA (11-13) → 6KA (13-25) → 7KA (25-27) → 2KM (coil) → N.
When the valve is closed, a valve closing button 3SB is pressed, a 7KA coil of the intermediate relay is electrified and closed, 7KA normally open contacts (5-19) are closed to form self locking, 7KA normally open contacts (13-25) are closed to be communicated with a loop of a coil of an alternating current contactor 1KM, a normally open contact 1KM in the figure 4 is closed, a motor M is electrified and operated, and the valve is closed;
the automatic adjustment of the power phase sequence is also realized. The conducting loop is as follows: l3 → 2QF → 1SB → 3SB (7KA5-19) → 1KM (19-21) → 3KA (21-23) → 4KA (23-25) → 7KA (13-25) → 6KA (13-15) → 1KM coil → N.
1KM (19-21), 2KM (7-9), 6KA (13-15) and 7KA (25-27) in the loop form an interlocking circuit, so that the 2KM loop of the AC contactor is automatically cut off when the AC contactor 1KM works; if the alternating current contactor 2KM works, the loop of the alternating current contactor 1KM is automatically cut off, so that short-circuit fault is prevented when the alternating current contactor works simultaneously.
The working principle of valve position feedback signal measurement is as follows:
the direct-current 24V voltage output by the switch power supply in fig. 6 is connected to the valve position feedback module through the terminals D30 and D31 of the valve electric device, and the current signal of the feedback module reflecting the real-time position of the valve is connected to the digital display milliammeter in fig. 5 through the terminals D32 and D33 for measurement and display.
Example II
The electric valve controller is optimized on the basis of the first embodiment, as shown in fig. 7, the electric valve controller further comprises a control box 20, wherein a display screen group, a display lamp group, a switch group and a button group are arranged on the control box, the display screen group is arranged at the top of one side of the control box 20, the display lamp group is arranged below the display screen group, the switch group is arranged below the display lamp group, the button group is arranged below the switch group, the bottom of the control box is also provided with a power input port 17, a power output port 18 and a control line output port 19, the display screen group comprises a current display screen 1, a valve position display screen 2 and a timing display screen 3, the display lamp group comprises a power display lamp 4, an opening moment alarm display lamp 5, an closing moment alarm display lamp 6, a valve opening position display lamp 15, a valve opening position display lamp 16-a valve closing position display lamp 16, the switch group comprises a power switch 13, a control switch 14, a change-over switch and a phase modulation switch, and the button group comprises a stop button 11, an open valve button 12, a close valve button 9 and a timer reset button 10.
The above-mentioned embodiments, further detailed description of the objects, technical solutions and advantages of the present invention, it should be understood that the above description is only the embodiments of the present invention, and is not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (8)
1. The electric valve controller is characterized by comprising a main circuit, a control circuit and a feedback circuit, wherein the control circuit and the feedback circuit are respectively connected in parallel on the main circuit, and the main circuit is used for realizing forward and reverse rotation of a motor; the control circuit is used for realizing the control of the opening and closing of the electric valve; the feedback circuit is used for indicating the state of the electric valve and the opening and closing state.
2. The electric valve controller of claim 1, wherein the main circuit comprises three-phase terminals L1, L2, L3 and a neutral terminal, the three-phase terminals L1, L2 and L3 are respectively connected with an ac contactor 1KM and an ac contactor 2KM in series through wires, and then are connected with a voltage input terminal of a main motor M3, and the terminal L1 is connected with a current transformer in series and then is connected with the ac contactor 1 KM.
3. The electric valve controller according to claim 2, wherein the control circuit comprises a first indicator light, a valve opening circuit, a valve closing circuit, the valve opening circuit and the valve closing circuit, which are connected in parallel to the main circuit, and the valve opening circuit and the valve closing circuit are connected through an intermediate relay connected in parallel.
4. The electrically operated valve controller of claim 3, wherein said control circuit further comprises a timer and a milliammeter, both of said timer and said milliammeter being connected in parallel to said main circuit, said timer being configured to time a valve opening time or a valve closing time, said milliammeter being configured to measure a current signal in said feedback circuit.
5. The electric valve controller as claimed in claim 4, wherein the control circuit further comprises a first indicator light connected in parallel to the main circuit, and the first indicator light is used for indicating the status of the power supply.
6. The electrically operated valve controller according to claim 1, wherein the D31 port and the D30 port of the feedback circuit are connected to the motor, and the feedback circuit is connected to the main circuit through a rectifier; the feedback circuit comprises a stroke circuit, a limit circuit, a control circuit, a second indicating circuit, a third indicating circuit, a fourth indicating circuit and a fifth indicating circuit, the stroke circuit, the limit circuit, the control circuit, the second indicating circuit, the third indicating circuit, the fourth indicating circuit and the fifth indicating circuit are connected in parallel, and the second indicating circuit is used for indicating that the opening of the electric valve is finished; the third indicating circuit is used for indicating that the electric valve has an opening moment fault; the fourth indicating circuit is used for indicating the closing of the electric valve; and the fifth indicating circuit is used for indicating that the electric valve has a torque-off fault.
7. The electric valve controller of claim 6, wherein the second indicating circuit comprises a second indicator light for indicating the opening state of the electric valve; the third indicating circuit comprises a third indicating lamp, and the third indicating lamp is used for indicating the opening torque fault state of the electric valve; the fourth indicating circuit comprises a fourth indicating lamp for indicating the closing state of the electric valve; the fifth indicator circuit includes a fifth indicator light for indicating the electric valve off-torque fault condition.
8. The electric valve controller according to any one of claims 1 to 7, further comprising a control box, wherein the control box is provided with a display panel set, a display lamp set, a switch set and a button set, the display panel set is disposed on a top of one side of the control box, the display lamp set is disposed below the display panel set, the switch set is disposed below the display lamp set, the button set is disposed below the switch set, and a power input port, a power output port and a control output port are further disposed on a bottom of the control box.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120448917.3U CN214534734U (en) | 2021-03-02 | 2021-03-02 | Electric valve control instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120448917.3U CN214534734U (en) | 2021-03-02 | 2021-03-02 | Electric valve control instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214534734U true CN214534734U (en) | 2021-10-29 |
Family
ID=78259629
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120448917.3U Active CN214534734U (en) | 2021-03-02 | 2021-03-02 | Electric valve control instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214534734U (en) |
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2021
- 2021-03-02 CN CN202120448917.3U patent/CN214534734U/en active Active
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