CN201152172Y - Wellhead equipment pressure test pump set automatic control system - Google Patents
Wellhead equipment pressure test pump set automatic control system Download PDFInfo
- Publication number
- CN201152172Y CN201152172Y CNU2007200805379U CN200720080537U CN201152172Y CN 201152172 Y CN201152172 Y CN 201152172Y CN U2007200805379 U CNU2007200805379 U CN U2007200805379U CN 200720080537 U CN200720080537 U CN 200720080537U CN 201152172 Y CN201152172 Y CN 201152172Y
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- pump
- control system
- controller
- rcs
- robot control
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Abstract
The utility model discloses an automatic control system for the hydraulic test pump package of an oil gas wellhead device, which comprises a controller and a pressure sensor, wherein, the pressure sensor is arranged on a subject device, the signal output end of the pressure sensor is connected with the controller through conducting wires, the output end of the controller is connected with the pump package through conducting wires, the pump package comprises a filling pump and an inflator pump which are all provided with the enabling or stopping signal performers of pump motors, the motor of the filling pump is provided with a frequency transformator, the controller is provided with a control unit for a pump package separating and combining machine and a pump package rotating speed control unit, the output end of the control unit for the pump package separating and combining machine is respectively connected with the enabling or stopping signal performers of all the pump motors through the conducting wires, and the output end of the pump package rotating speed control unit is respectively connected with the frequency transformators of all filling pump motors through the conducting wires. The system controls the work procedures of the pump package, and accurately, reliably and fully satisfies the control requirements of the pump package.
Description
Technical field
The utility model relates to the robot control system(RCS) of petroleum gas well head equipment hydraulic test pump group, belongs to automation field.
Background technology
The well control device of oil, the natural gas well need carry out withstand voltage test, to check its safety.Well control device comprises wellhead assembly, throttle well killing manifold, pit shaft, blowout prevention pipeline, surface line etc.Existing test detection technique falls behind, and measuring means is incomplete, and testing equipment is simple and crude, for a long time, only wellhead assembly is tested detection, does not detect other well control device.Especially, when the full pit shaft hydrostatic test, because only with a pump pressurising, pump delivery is limited, so pressurising speed is slow, the time is long, experiment work efficient is low.For this reason, the applicant has invented a kind of pump group (separate case is applied for a patent), is constituted by many different pressurising pumps of row pressure, and wherein, what row pressure was the highest is inflator pump, and all the other are water pumps.But this pump group extension set is respectively to wellhead assembly, throttle well killing manifold, pit shaft, blowout prevention pipeline, surface line pressurising, but also parallel operation to accelerate pressurising speed, is shortened test period simultaneously to the pit shaft pressurising.The pump group to the process of pit shaft pressurising is: at the beginning of the pressurising, each water pump starts simultaneously, jointly to pit shaft draining pressurising, when borehole pressure reaches the specified output pressure of the minimum water pump of row pressure, this pump stops, and all the other water pumps work on, when borehole pressure reaches the specified output pressure of another water pump, this pump stops, and all the other water pumps work on; The rest may be inferred, up to borehole pressure near row pressure during the specified output pressure of high water pump, reduce the rotating speed of this pump motor, reduce discharge capacity, and the startup inflator pump, charge into compressed air to pit shaft simultaneously, with the final value of accurate control test pressure, when borehole pressure reached specified experimental pressure, water pump, air pump stopped simultaneously.Obviously, the course of work of this pump group is than single pump complexity, and existing single apparatus for controlling pump can not satisfy the control requirement of said pump group.
Summary of the invention
The purpose of this utility model provides a kind of automatic control system that the control of said pump group requires that satisfies.
Technical solution of the present utility model is:
A kind of robot control system(RCS) of well head equipment hydraulic test pump group comprises controller, pressure sensor; Described pressure sensor is arranged on the tested device, and the signal output part of this pressure sensor is by wire connection controller, and the output of described controller connects the pump group by lead; Described pump group comprises charging pump and inflator pump, all has the startup/stop signal actuator of pump motor, and wherein, the motor of charging pump has frequency converter; This controller has pump component, parallel operation control module and pump group rotary speed controling unit; The output of described pump component, parallel operation control module connects the startup/stop signal actuator of each pump motor respectively by lead, and the output of described pump group rotary speed controling unit connects the frequency converter of each pump motor respectively by lead.
Described controller is a digital controller.
Described digital controller be in single-chip microcomputer, PC, the PLC programmable controller any.
The startup of described pump motor/stop signal actuator is an A.C. contactor.
Described robot control system(RCS) also has the display that is used to show pressure and each pump operation state.
Described robot control system(RCS) also has the recorder that is used to write down test parameters.
Described robot control system(RCS) also has the memory that is used to store test parameters.
The useful technique effect of this control system:, accurately, reliably, satisfied the control requirement of pump group fully owing to adopt computer that the working programme of pump group is controlled.
Description of drawings
Fig. 1 is the structured flowchart of this control system
Fig. 2 is the controller architecture block diagram of this control system
Fig. 3 is a kind of circuit diagram of this control system, wherein:
Fig. 3-the 1st, relay control section circuit diagram
Fig. 3-the 2nd, the weak current part circuit diagram
The specific embodiment
Referring to Fig. 1: the hydraulic test pump group has three pumps, i.e. inflator pump and 1, No. 2 charging pump, delivery side of pump is communicated with tested device 8 by one way valve, charge into water and/air, make the pressure Pass Test requirement in the tested device 8.
This control system comprises controller 4, memory 1, display 2, recorder 3, pressure sensor 5.Pressure sensor 5 is installed on the outlet conduit of experimental rig, is used to detect test pressure, pressure signal is sent into controller 4 handle, and exports control signal corresponding by controller 4 to pump group motor again, and the duty of pump group motor is controlled.Memory 1 is connected with controller 4, is used to store the setting value and the control program of test pressure; Display 2 is connected with controller 4, pressure sensor 5, is used for the control signal of real-time display controller 4 outputs and the pressure signal of pressure sensor 5 outputs; Recorder 3 connects display 2, is used to write down the force value in the tested device 8.
Referring to Fig. 2: controller 4 has two control modules, i.e. pump component parallel operation control module 6 and pump group rotary speed controling unit 7.Pump component parallel operation control module 6 has three signal outputs, exports control signals to inflator pump and No. 1 charging pump, No. 2 charging pumps respectively, controls it and starts or stops.Pump group rotary speed controling unit 7 has two signal outputs, respectively to No. 1 charging pump, No. 2 charging pump motor frequency conversion device output control signals, the running speed of control pump motor.
Controller 4 adopts the PLC programmable controller, and also available single-chip microcomputer, PC, its software have pump component parallel operation control module 6, pump motor rotary speed controling unit 7.Require programming in advance according to control, input store 1 storage.
Referring to Fig. 3-1, Fig. 3-2, among the figure: M is the motor of pump, and FR is the motor frequency conversion device, and KM is an A.C. contactor, and KT is an auxiliary reclay, and PLC is a programmable controller.These all are conventional control elements, and the principle of this circuit is known for people, so needn't give unnecessary details.
Its course of work is, at the beginning of the pressurising, pressure in the tested device 8 is lower than setting pressure, 1, No. 2 charging pump starts simultaneously, jointly to pit shaft draining pressurising, when borehole pressure reaches the specified output pressure of No. 2 charging pumps, this pump stops automatically, No. 1 charging pump works on, when borehole pressure during near the specified output pressure of No. 1 charging pump (for example be set at specified output pressure 90%), controller output frequency conditioning signal, change the frequency of motor frequency conversion device, reduce the rotating speed of this pump motor, reduce discharge capacity (for example be set at rated discharge 30%), and start inflator pump, simultaneously charge into compressed air to pit shaft, with the final value of accurate control test pressure, when borehole pressure reaches specified experimental pressure, water pump, air pump stops simultaneously.
Claims (7)
1. a well head equipment hydraulic test pump group robot control system(RCS) comprises controller, pressure sensor; Described pressure sensor is arranged on the tested device, and the signal output part of this pressure sensor is by wire connection controller, and the output of described controller connects the pump group by lead; Described pump group comprises charging pump and inflator pump, all has the startup/stop signal actuator of pump motor, and wherein, the motor of charging pump has frequency converter; It is characterized in that: this controller has pump component, parallel operation control module and pump group rotary speed controling unit; The output of described pump component, parallel operation control module connects the startup/stop signal actuator of each pump motor respectively by lead, and the output of described pump group rotary speed controling unit connects the frequency converter of each pump motor respectively by lead.
2. well head equipment hydraulic test pump group robot control system(RCS) according to claim 1, it is characterized in that: described controller is a digital controller.
3. well head according to claim 2 equipment hydraulic test pump group robot control system(RCS) is characterized in that: described digital controller be in single-chip microcomputer, PC, the PLC programmable controller any.
4. well head equipment hydraulic test pump group robot control system(RCS) according to claim 1, it is characterized in that: the startup of described pump motor/stop signal actuator is an A.C. contactor.
5. well head equipment hydraulic test pump group robot control system(RCS) according to claim 1, it is characterized in that: described robot control system(RCS) also has the display that is used to show pressure and each pump operation state.
6. well head equipment hydraulic test pump group robot control system(RCS) according to claim 1, it is characterized in that: described robot control system(RCS) also has the recorder that is used to write down test parameters.
7. well head equipment hydraulic test pump group robot control system(RCS) according to claim 1, it is characterized in that: described robot control system(RCS) also has the memory that is used to store test parameters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200805379U CN201152172Y (en) | 2007-08-03 | 2007-08-03 | Wellhead equipment pressure test pump set automatic control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200805379U CN201152172Y (en) | 2007-08-03 | 2007-08-03 | Wellhead equipment pressure test pump set automatic control system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201152172Y true CN201152172Y (en) | 2008-11-19 |
Family
ID=40127851
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200805379U Expired - Lifetime CN201152172Y (en) | 2007-08-03 | 2007-08-03 | Wellhead equipment pressure test pump set automatic control system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201152172Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102734145A (en) * | 2012-07-02 | 2012-10-17 | 于明 | Wireless remote speed regulation system for sewage lifting pump |
-
2007
- 2007-08-03 CN CNU2007200805379U patent/CN201152172Y/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102734145A (en) * | 2012-07-02 | 2012-10-17 | 于明 | Wireless remote speed regulation system for sewage lifting pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20081119 |
|
| CX01 | Expiry of patent term |