CN112963653A - In-service pipeline plugging and isolating device and motor control method thereof - Google Patents
In-service pipeline plugging and isolating device and motor control method thereof Download PDFInfo
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- CN112963653A CN112963653A CN202110141836.3A CN202110141836A CN112963653A CN 112963653 A CN112963653 A CN 112963653A CN 202110141836 A CN202110141836 A CN 202110141836A CN 112963653 A CN112963653 A CN 112963653A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
- F16L55/10—Means for stopping flow from or in pipes or hoses
- F16L55/11—Plugs
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/08—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors
- H02H7/085—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors against excessive load
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P1/00—Arrangements for starting electric motors or dynamo-electric converters
- H02P1/02—Details
- H02P1/04—Means for controlling progress of starting sequence in dependence upon time or upon current, speed, or other motor parameter
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P3/00—Arrangements for stopping or slowing electric motors, generators, or dynamo-electric converters
- H02P3/06—Arrangements for stopping or slowing electric motors, generators, or dynamo-electric converters for stopping or slowing an individual dynamo-electric motor or dynamo-electric converter
Abstract
The invention discloses an in-service pipeline plugging and isolating device and a motor control method thereof, and belongs to the technical field of long-distance oil and gas pipeline maintenance. The utility model provides an at labour pipeline shutoff isolating device, fix two sealed ball board subassemblies on the mount including mount and interval, every sealed ball board subassembly of group all includes sealed ball board, each sealed ball board is the annular structure of coaxial setting, the outer fringe of sealed ball board is the flexbile plate with pipeline inner wall interference seal fit, the inner edge of sealed ball board is in the same place with the sealed fixed mounting of mount, the mount is located sealed ball board subassembly inboard and has the sealing block, one side of mount is equipped with the motor, the drive shaft of motor passes the sealing block that is close to with the motor and is connected with the screw rod with the coaxial setting of sealed ball board, threaded assembly has the slider on the screw rod, be connected with brake assembly on the slider, brake assembly is including the brake block that is used for laminating on the pipeline inner wall, utilize brake block and pipeline inner wall to produce frictional force, ensure that pipeline shutoff isolating device.
Description
Technical Field
The invention relates to an in-service pipeline plugging and isolating device and a motor control method thereof, belonging to the technical field of long-distance oil and gas pipeline maintenance.
Background
In the field of long-distance oil and gas pipeline maintenance, a pipeline pressure tapping plugging technology is adopted as a common pipeline replacement method for a long time, but in the using process of the technology, a plugging tee joint is connected to an in-service pipeline in a welding mode and needs to be kept on the in-service pipeline for a long time, medium leakage risks exist in fillet welds and plugging sealing of the plugging tee joint and the in-service pipeline, and therefore an isolating device capable of temporarily plugging a specified position in the in-service pipeline is urgently needed, the problem that the plugging tee joint is left on the in-service pipeline is solved, and the medium leakage risk of the in-service pipeline is reduced.
Disclosure of Invention
The invention aims to provide an in-service pipeline plugging and isolating device which can be used for dismantling a plugging tee joint of a repaired and reconstructed pipeline section, so that the problem that the plugging tee joint is left on a in-service pipeline is solved, and the risk of medium leakage of the in-service running pipeline is reduced. Meanwhile, the invention also provides a motor control method of the in-service pipeline plugging and isolating device
The in-service pipeline plugging and isolating device adopts the following technical scheme: an in-service pipeline plugging and isolating device comprises a fixing frame and two sealing ball plate assemblies fixed on the fixing frame at intervals, wherein each sealing ball plate assembly comprises a sealing ball plate, each sealing ball plate is of a coaxially arranged annular structure, the outer edge of each sealing ball plate is a flexible plate in interference sealing fit with the inner wall of a pipeline, the inner edge of each sealing ball plate is fixedly and hermetically installed with the fixing frame, the fixing frame is positioned at the inner side of each sealing ball plate assembly and is provided with a sealing block, one side of the fixing frame is provided with a motor, the position of the motor, which is positioned outside the fixing frame, is connected with a battery and a control circuit bin, a driving shaft of the motor penetrates through the sealing block, which is adjacent to the motor, and is connected with a screw rod which is coaxially arranged with the sealing ball plates, the screw rod is driven by the motor to rotate, the screw rod is positioned, each brake component distributes on the different positions of mount periphery, and every brake component includes brake block and first connecting piece and the second connecting piece that one end all articulates on the brake block respectively, and the other end of first connecting piece articulates on the slider, and the other end of second connecting piece articulates on the mount, and each articulated shaft on first connecting piece and the second connecting piece all is perpendicular with the screw rod axis, and first connecting piece and second connecting piece all lie in same one side of slider, one side that the mount was kept away from to the brake block is equipped with the friction disc that is used for laminating to the pipeline inner wall.
The slider is fixed with the first engaging lug that slides on the mount, has the space that supplies first engaging lug to remove on the mount, first connecting piece articulates on first engaging lug, be fixed with the second engaging lug on the mount, the second connecting piece articulates on the second engaging lug.
The first connecting piece and the second connecting piece are both positioned on one side, away from the motor, of the sliding block.
The four brake assemblies are uniformly distributed on two sides of the fixing piece.
Each sealing ball plate component comprises four sealing ball plates arranged at intervals, and two sides of each sealing ball plate are fixedly connected with fixing plates respectively.
The sealing ball plate comprises a metal ring plate positioned in the middle, the flexible plate is a rubber plate fixed on the outer edge of the metal ring plate, and the interference magnitude between the sealing ball plate and the inner wall of the pipeline is 8-10%.
Be equipped with the supporting shoe that is used for supporting the screw rod tip in keeping away from the sealed piece of motor, be equipped with the tracker on keeping away from the sealed piece of motor, the tracker is located one side that the screw rod was kept away from to sealed piece.
The motor of the in-service pipeline plugging and isolating device adopts the following technical scheme: a motor control method of an in-service pipeline plugging and isolating device is carried out according to the following steps: (1) through the PC end control interface, the logic time value of the multi-way switch is set, and the logic time value is divided into four time units, which are detailed as follows: the method comprises the following steps that A, an adjustable logic time value is used for controlling a logic time value from a plug blocking isolation device to a motor power-on starting; the B adjustable logic time value is used for controlling the logic time value of the motor which is powered off and stops running when the motor is powered on and started, and the motor is prevented from being damaged due to too large overload current of the motor; thirdly, the method comprises the following steps: c, the adjustable logic time value is used for controlling the logic time value from the time when the motor is powered off to the time when the motor is powered on again, and the construction operation of disconnecting the old pipe from the new pipe is carried out within the time value; the D adjustable logic time value is used for controlling the logic time value of the third step when the motor is electrified and started and the motor is not electrified and stops running, and the motor is prevented from being damaged due to too large overload current of the motor;
the adjustable logic time value is set through a PC end program, converted by an analog-to-digital conversion circuit, coupled to an ultra-low frequency transmitting circuit and transmitted, received by a receiving circuit in a battery and control circuit bin and then executed by an executing mechanism;
(2) after the adjustable logic time value data of the multi-way switch is set by the PC end control interface, the data is transmitted to a receiving circuit end in the battery and control circuit bin, and a receiving signal enters a standby state after being converted and executed; after the receiving circuit executes the set command signal, the PC end gives out a trigger signal, the trigger signal is at least 4 paths, and the details of the trigger signal are as follows:
first, trigger signal IN 1: the signal is triggered by a start or operation key, the start or operation key is pressed, the in-service pipeline plugging isolation device starts to work according to A, B, C, D sequential four adjustable logic time values, firstly, the preset A adjustable logic time value is counted down, the pipe plugging operation of the in-service pipeline plugging isolation device is carried out in the time value section, the A adjustable logic time value is finished, and a motor power-on command is started, namely, the brake action is started;
the time value of the motor from starting/powering on to stopping/powering off is B adjustable logic time value; b, stopping the motor after the adjustable logical time value is finished, and then entering the adjustable logical time value C, wherein the time value section carries out construction operation of disconnecting the old pipe from connecting a new pipe;
c, after the logic time value is adjusted, the motor is electrified, when the motor is electrified, the motor is stopped, the value is a D value, and then the motor returns to the initial state to wait for triggering the command signal again;
triggering a signal IN2, wherein the signal is triggered by a pause function key, and corresponding actions are paused when the pause function key is pressed at any step IN the whole workflow;
triggering a signal IN3, wherein the signal is triggered by a continue/run function key, and corresponding actions can be continuously run when the continue/run function key is pressed IN a state that any step IN the whole workflow is suspended;
and triggering a signal IN4, wherein the signal is triggered by a next function key, and when the next function key is pressed at any step IN the whole work flow, the current step is directly cancelled and the next step is entered.
The trigger signal has 6 paths, wherein 2 paths are used as standby trigger signals.
A. B, C, D four adjustable logic time values set the logic time value to the nearest second, with a maximum of 999 hours.
The invention has the beneficial effects that: when the pipeline plugging isolation device is used, the pipeline plugging isolation device is pushed to a specified position by the aid of the ball serving device, the screw is driven to rotate by the motor, the screw moves when rotating, the sliding block is driven to move by the sliding block, the first connecting piece is driven to move by the sliding block, when the first connecting piece moves towards the second connecting piece, the brake block moves upwards to be close to the inner wall of the pipeline, the brake block is attached to the inner wall of the pipeline, friction force is generated between the brake block and the inner wall of the pipeline to resist medium pressure, the pipeline plugging isolation device is ensured to stay at the specified position, the sealing ball plate on the pipeline plugging isolation device is in interference fit with the inner wall of the pipeline, the sealing ball plate is ensured to be sealed with the pipeline, medium in the pipeline is prevented. After the pipeline plugging isolation device stays in the pipeline, the plugging tee joint of the maintenance reconstruction pipeline section is removed, so that the leakage risk of the long oil and gas pipeline after maintenance is reduced; then through the reversal of motor control screw rod, with the quick deblocking of pipeline shutoff isolating device to realize the purpose of pipeline shutoff and deblocking.
The invention solves the problem that the plugging tee remains on the in-service pipeline to cause medium leakage risk and threaten the pipeline operation in the prior art, can solve the problem of pipe replacement for the long-distance oil and gas pipeline in rush maintenance, can ensure that the plugging tee does not remain on the in-service pipeline, and effectively ensures the operation safety of the in-service pipeline.
Drawings
FIG. 1 is a schematic diagram of an in-service pipeline plugging and isolating device according to an embodiment of the invention;
FIG. 2 is a motor control logic diagram of an in-service pipeline plugging and isolating device according to an embodiment of the invention;
fig. 3 is a motor circuit diagram of the in-service pipeline plugging and isolating device.
In the figure: 1-a fixed frame, 11-a sealing block, 2-a sealing ball plate component, 21-a sealing ball plate, 22-a fixed plate, 3-a motor, 4-a battery and control circuit bin, 5-a screw rod, 6-a sliding block, 7-a brake component, 71-a brake block, 72-a friction plate, 73-a first connecting piece, 74-a second connecting piece, 81-a first connecting lug, 82-a second connecting lug, 9-a supporting block and 10-a tracker.
Detailed Description
The invention is described in detail below with reference to the figures and specific embodiments.
The structure of the in-service pipeline plugging and isolating device is shown in figure 1, the in-service pipeline plugging and isolating device of the embodiment comprises a fixed frame 1 and two sealing ball plate assemblies 2 fixed on the fixed frame 1 at intervals, each sealing ball plate assembly 2 comprises a sealing ball plate 21, each sealing ball plate 21 is of a coaxially arranged annular structure, the outer edge of each sealing ball plate 21 is a flexible plate in interference sealing fit with the inner wall of a pipeline, the inner edge of each sealing ball plate 21 is fixedly and hermetically installed with the fixed frame 1, the fixed frame 1 is provided with a sealing block 11 at the inner side of the sealing ball plate assembly, one side of the fixed frame 1 is provided with a motor 3, the motor 3 is connected with a battery and control circuit bin 4 at the position outside the fixed frame 1, a driving shaft of the motor 3 penetrates through the sealing block 11 adjacent to the motor and is connected with a screw rod 5 coaxially arranged with the sealing ball plate 21, the, the screw rod 5 is located inside the mount 1 of below between two sealed ball board subassemblies 2, the screw thread is equipped with slider 6 on the screw rod 5, be connected with two at least brake assembly 7 on the slider 6, each brake assembly 7 distributes on the different positions of mount 1 periphery, every brake assembly 7 includes brake block 71 and first connecting piece 73 and second connecting piece 74 that one end all articulates on brake block 71 respectively, the other end of first connecting piece 73 articulates on slider 6, the other end of second connecting piece 74 articulates on mount 1, each articulated shaft on first connecting piece 73 and the second connecting piece 74 all is perpendicular with the screw rod 5 axis, first connecting piece 73 and second connecting piece 74 all are located the same one side of slider 6, one side that the mount 1 was kept away from to brake block 71 is equipped with friction disc 72 that is used for laminating to the pipeline inner wall. A first connecting lug 81 which slides on the fixed frame 1 is fixed on the sliding block 6, a space for the first connecting lug 81 to move is arranged on the fixed frame 1, the first connecting piece 73 is hinged on the first connecting lug 81, a second connecting lug 82 is fixed on the fixed frame 1, and the second connecting piece 74 is hinged on the second connecting lug 82. The first connecting piece 73 and the second connecting piece 74 are both positioned on the side of the sliding block 6 away from the motor 1. In this embodiment, there are four brake assemblies 7, and the four brake assemblies 7 are symmetrically distributed on the periphery of the fixing member 1.
Every sealed ball board subassembly 2 all includes the sealed ball board 21 that four intervals set up, and the fixed plate 22 of fixedly connected with respectively is in sealed ball board 21 both sides. The sealing ball plate 21 comprises a metal ring plate positioned in the middle, and the flexible plate is a rubber plate fixed on the outer edge of the metal ring plate. The interference magnitude between the sealing ball plate and the inner wall of the pipeline is 8-10 percent
Be equipped with the supporting shoe 9 that is used for supporting the screw rod 5 tip in keeping away from the sealed piece 11 of motor 1, be equipped with tracker 10 on keeping away from the sealed piece 11 of motor 1, tracker 10 is located the one side that screw rod 5 was kept away from to sealed piece 11.
When the pipe sealing device is used, after a pipe needing repairing is cut, the sealing isolation device is firstly pushed to a specified position in the pipe, the motor rotates forwards within a set time, the screw rod drives the sliding block to move, the sliding block moves to drive the first connecting sheet to move, when the first connecting sheet moves towards the second connecting sheet, the brake block moves upwards to be close to the inner wall of the pipe, the brake block is attached to the inner wall of the pipe, friction force is generated, the motor stops after the torque of the motor reaches a set value, the motor has a self-locking function, the friction force generated by attaching the brake assembly to the inner wall of the pipe resists the thrust generated by the pressure difference of media in front of and behind the sealing isolation device, the sealing isolation device is fixed to the specified position of the pipe, the media are prevented from overflowing by utilizing the sealing effect of the sealing ball plate and the inner wall of the pipe.
After the pipeline plugging isolation device stays in the pipeline, the plugging tee joint of the maintenance reconstruction pipeline section is removed, so that the leakage risk of the long oil and gas pipeline after maintenance is reduced; then through the reversal of motor control screw rod, with the quick deblocking of pipeline shutoff isolating device to realize the purpose of pipeline shutoff and deblocking.
The motor control logic of the in-service pipeline plugging and isolating device of the embodiment of the invention is shown in fig. 2, the circuit diagram of the motor is shown in fig. 3, and the motor control method of the in-service pipeline plugging and isolating device of the embodiment of the invention comprises the following steps: (1) through the PC end control interface, the logic time value of the multi-way switch is set, and the logic time value is divided into four time units, which are detailed as follows: the method comprises the following steps that A, an adjustable logic time value is used for controlling a logic time value from a plug blocking isolation device to a motor power-on starting; the B adjustable logic time value is used for controlling the logic time value of the motor which is powered off and stops running when the motor is powered on and started, and the motor is prevented from being damaged due to too large overload current of the motor; thirdly, the method comprises the following steps: c, the adjustable logic time value is used for controlling the logic time value from the time when the motor is powered off to the time when the motor is powered on again, and the construction operation of disconnecting the old pipe from the new pipe is carried out within the time value; the D adjustable logic time value is used for controlling the logic time value of the third step when the motor is electrified and started and the motor is not electrified and stops running, and the motor is prevented from being damaged due to too large overload current of the motor;
the adjustable logic time value is set through a PC end program, converted by an analog-to-digital conversion circuit, coupled to an ultra-low frequency transmitting circuit and transmitted, received by a receiving circuit in a battery and control circuit bin and then executed by an executing mechanism;
(2) after the adjustable logic time value data of the multi-way switch is set by the PC end control interface, the data is transmitted to a receiving circuit end in the battery and control circuit bin, and a receiving signal enters a standby state after being converted and executed; after the receiving circuit executes the set command signal, the PC end gives out a trigger signal, the trigger signal is at least 4 paths, and the details of the trigger signal are as follows:
first, trigger signal IN 1: the signal is triggered by a start or operation key, the start or operation key is pressed, the in-service pipeline plugging isolation device starts to work according to A, B, C, D sequential four adjustable logic time values, firstly, the preset A adjustable logic time value is counted down, the pipe plugging operation of the in-service pipeline plugging isolation device is carried out in the time value section, the A adjustable logic time value is finished, and a motor power-on command is started, namely, the brake action is started;
the time value of the motor from starting/powering on to stopping/powering off is B adjustable logic time value; b, stopping the motor after the adjustable logical time value is finished, and then entering the adjustable logical time value C, wherein the time value section carries out construction operation of disconnecting the old pipe from connecting a new pipe;
c, after the logic time value is adjusted, the motor is electrified, when the motor is electrified, the motor is stopped, the value is a D value, and then the motor returns to the initial state to wait for triggering the command signal again;
triggering a signal IN2, wherein the signal is triggered by a pause function key, and corresponding actions are paused when the pause function key is pressed at any step IN the whole workflow;
triggering a signal IN3, wherein the signal is triggered by a continue/run function key, and corresponding actions can be continuously run when the continue/run function key is pressed IN a state that any step IN the whole workflow is suspended;
and triggering a signal IN4, wherein the signal is triggered by a next function key, and when the next function key is pressed at any step IN the whole work flow, the current step is directly cancelled and the next step is entered.
As shown in fig. 2, there are 6 ways of trigger signals, of which 2 are standby trigger signals.
In the above steps, A, B, C, D the four adjustable logic time values set the logic time value to be accurate to seconds, and the maximum value is 999 hours.
The parts not involved in the present invention are the same as or can be implemented using the prior art.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It should be understood by those skilled in the art that the above embodiments do not limit the scope of the present invention in any way, and all technical solutions obtained by using equivalent substitution methods fall within the scope of the present invention.
Claims (10)
1. The utility model provides an in-service pipeline shutoff isolating device which characterized in that: the sealing device comprises a fixed frame and two sealing ball plate assemblies fixed on the fixed frame at intervals, wherein each sealing ball plate assembly comprises a sealing ball plate, each sealing ball plate is of a coaxially arranged annular structure, the outer edge of each sealing ball plate is a flexible plate in interference sealing fit with the inner wall of a pipeline, the inner edge of each sealing ball plate is fixedly and hermetically installed with the fixed frame, the fixed frame is positioned at the inner side of each sealing ball plate assembly and is provided with a sealing block, one side of the fixed frame is provided with a motor, the position of the motor, which is positioned outside the fixed frame, is connected with a battery and a control circuit bin, a driving shaft of the motor penetrates through the sealing block, which is adjacent to the motor, and is connected with a screw rod coaxially arranged with the sealing ball plates, the screw rod rotates under the driving of the motor, the screw rod is positioned in the fixed frame below the two sealing ball plate assemblies, every brake subassembly includes brake block and first connecting piece and the second connecting piece that one end all articulates on the brake block respectively, and the other end of first connecting piece articulates on the slider, and the other end of second connecting piece articulates on the mount, and each articulated shaft on first connecting piece and the second connecting piece all is perpendicular with the screw rod axis, and first connecting piece and second connecting piece all lie in same one side of slider, one side that the mount was kept away from to the brake block is equipped with the friction disc that is used for laminating to pipeline inner wall.
2. The in-service pipeline plugging and isolating device of claim 1, wherein: the slider is fixed with the first engaging lug that slides on the mount, has the space that supplies first engaging lug to remove on the mount, first connecting piece articulates on first engaging lug, be fixed with the second engaging lug on the mount, the second connecting piece articulates on the second engaging lug.
3. The in-service pipeline plugging and isolating device of claim 1, wherein: the first connecting piece and the second connecting piece are both positioned on one side, away from the motor, of the sliding block.
4. The in-service pipeline plugging and isolating device of claim 1, wherein: the four brake assemblies are uniformly distributed on two sides of the fixing piece.
5. The in-service pipeline plugging and isolating device of claim 1, wherein: each sealing ball plate component comprises four sealing ball plates arranged at intervals, and two sides of each sealing ball plate are fixedly connected with fixing plates respectively.
6. The in-service pipeline plugging and isolating device of claim 1, wherein: the sealing ball plate comprises a metal ring plate positioned in the middle, the flexible plate is a rubber plate fixed on the outer edge of the metal ring plate, and the interference magnitude between the sealing ball plate and the inner wall of the pipeline is 8-10%.
7. The in-service pipeline plugging and isolating device of claim 1, wherein: be equipped with the supporting shoe that is used for supporting the screw rod tip in keeping away from the sealed piece of motor, be equipped with the tracker on keeping away from the sealed piece of motor, the tracker is located one side that the screw rod was kept away from to sealed piece.
8. A motor control method of an in-service pipeline plugging and isolating device is characterized by comprising the following steps: (1) through the PC end control interface, the logic time value of the multi-way switch is set, and the logic time value is divided into four time units, which are detailed as follows: the method comprises the following steps that A, an adjustable logic time value is used for controlling a logic time value from a plug blocking isolation device to a motor power-on starting; the B adjustable logic time value is used for controlling the logic time value of the motor which is powered off and stops running when the motor is powered on and started, and the motor is prevented from being damaged due to too large overload current of the motor; thirdly, the method comprises the following steps: c, the adjustable logic time value is used for controlling the logic time value from the time when the motor is powered off to the time when the motor is powered on again, and the construction operation of disconnecting the old pipe from the new pipe is carried out within the time value; the D adjustable logic time value is used for controlling the logic time value of the third step when the motor is electrified and started and the motor is not electrified and stops running, and the motor is prevented from being damaged due to too large overload current of the motor;
the adjustable logic time value is set through a PC end program, converted by an analog-to-digital conversion circuit, coupled to an ultra-low frequency transmitting circuit and transmitted, received by a receiving circuit in a battery and control circuit bin and then executed by an executing mechanism;
(2) after the adjustable logic time value data of the multi-way switch is set by the PC end control interface, the data is transmitted to a receiving circuit end in the battery and control circuit bin, and a receiving signal enters a standby state after being converted and executed; after the receiving circuit executes the set command signal, the PC end gives out a trigger signal, the trigger signal is at least 4 paths, and the details of the trigger signal are as follows:
first, trigger signal IN 1: the signal is triggered by a start or operation key, the start or operation key is pressed, the in-service pipeline plugging isolation device starts to work according to A, B, C, D sequential four adjustable logic time values, firstly, the preset A adjustable logic time value is counted down, the pipe plugging operation of the in-service pipeline plugging isolation device is carried out in the time value section, the A adjustable logic time value is finished, and a motor power-on command is started, namely, the brake action is started;
the time value of the motor from starting/powering on to stopping/powering off is B adjustable logic time value; b, stopping the motor after the adjustable logical time value is finished, and then entering the adjustable logical time value C, wherein the time value section carries out construction operation of disconnecting the old pipe from connecting a new pipe;
c, after the logic time value is adjusted, the motor is electrified, when the motor is electrified, the motor is stopped, the value is a D value, and then the motor returns to the initial state to wait for triggering the command signal again;
triggering a signal IN2, wherein the signal is triggered by a pause function key, and corresponding actions are paused when the pause function key is pressed at any step IN the whole workflow;
triggering a signal IN3, wherein the signal is triggered by a continue/run function key, and corresponding actions can be continuously run when the continue/run function key is pressed IN a state that any step IN the whole workflow is suspended;
and triggering a signal IN4, wherein the signal is triggered by a next function key, and when the next function key is pressed at any step IN the whole work flow, the current step is directly cancelled and the next step is entered.
9. The motor control method of the in-service pipeline plugging and isolating device according to claim 8, wherein: the trigger signal has 6 paths, wherein 2 paths are used as standby trigger signals.
10. The motor control method of the in-service pipeline plugging and isolating device according to claim 8, wherein: A. b, C, D four adjustable logic time values set the logic time value to the nearest second, with a maximum of 999 hours.
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| GB201418539D0 (en) * | 2014-10-19 | 2014-12-03 | Synthotech Ltd | Apparatus and method |
| CN105576714A (en) * | 2016-01-04 | 2016-05-11 | 江苏科技大学 | Programmable logic controller (PLC)-based ship power allocation control device and control method |
| CN107631122A (en) * | 2017-09-25 | 2018-01-26 | 中国石油大学(华东) | A kind of novel intelligent plugging device |
| CN108194754A (en) * | 2017-12-20 | 2018-06-22 | 中冶天工集团有限公司 | A kind of temporary blocking device and method for blocking suitable for different-diameter pipeline |
| CN109506070A (en) * | 2018-12-25 | 2019-03-22 | 中北大学 | Fast self-locking plugging device in pipeline |
| CN210566959U (en) * | 2019-07-26 | 2020-05-19 | 中石化南京工程有限公司 | Novel plugging device for long oil and gas transmission pipeline |
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Application publication date: 20210615 |