CN2835649Y - High power drilling pump driver - Google Patents
High power drilling pump driver Download PDFInfo
- Publication number
- CN2835649Y CN2835649Y CN 200520035187 CN200520035187U CN2835649Y CN 2835649 Y CN2835649 Y CN 2835649Y CN 200520035187 CN200520035187 CN 200520035187 CN 200520035187 U CN200520035187 U CN 200520035187U CN 2835649 Y CN2835649 Y CN 2835649Y
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- drilling pump
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- driving device
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Abstract
The utility model relates to a high-power drilling pump driving device which is mainly composed of a three-phase asynchronous motor, a speed regulating hydraulic coupling, a gear speed reducing device, a stepper motor driving device, a PLC, a high-power solid relay, etc., wherein a change pole motor is directly connected with the hydraulic coupling and coupling is connected with a drilling pump through the gear speed reducing device. A rotational speed setting device which is arranged in a drilling controlling chamber is regulated, and the rotational speed of the hydraulic coupling is controlled by controlling the connecting mode of a winding of the change pole motor and the displacement of a scoop tube of the hydraulic coupling through the PLC in order to control the rotational speed of the drilling pump. Compared with the traditional AC-SCR-DC and AC-AC variable frequency speed regulation, the high-power drilling pump driving device has the advantages of low cost, simple structure, convenient speed regulation easy maintenance, etc.
Description
Technical field
The utility model relates to a kind of high-power drilling pump drive unit, and this device can be as the driving of oil drilling pump.
Background technique
The driving problems of high-power drilling pump is the hot issue of petroleum drilling and mining industry research always, because power of slush pump is big, the scope of speed governing is wide, and the drilling pump operating conditions is abominable, operating mode is complicated, makes that the driving to drilling pump requires than higher in the well system.Drive forms such as Mechanical Driven, hydraulic driving, compound driving, AC-SCR-DC driving, the driving of AC-AC AC frequency conversion have been experienced in the driving of drilling pump.Up to the present, electricity drives the leading position that has occupied newly-built rig drive form, and the frequency conversion electricity drives the leading position that has occupied electric drive form owing to its good driving effect.But, because the first cost that drops into of frequency conversion electric driver is very high, and also higher to the requirement of technology, limited applying of frequency conversion electric driver.In addition, the higher harmonics that produces during frequency conversion drive causes very big interference to other electric equipments in well site.So, the research of high-power drilling pump drive form also is far from finishing, can not think that more popular frequency conversion drive is exactly best drive form at present.
The model utility content
The purpose of this utility model is to provide a kind of drilling pump drive unit that has stepless speed regulation cheaply, and the utility model drilling pump driving device structure is simple, and is with low cost.The specified jig frequency of drilling pump is 120 to dash/timesharing, and the efficient of system can reach more than 90%, and can carry out stepless speed regulation to drilling pump.Driving waits drive form to compare with the AC frequency conversion electricity with AC-SCR-DC, can save a large amount of costs of investment under the prerequisite that realizes identical function.
The technical solution of the utility model is: high-power drilling pump drive unit mainly is made up of pole-changing threephase asynchronous, variable speed fluid coupling, gear reducer, driving device for step-by-step, PLC, high power solid state relay etc.Pole-changing motor directly links to each other with fluid coupling, and fluid coupling links to each other with gear reducer, and gear reducer links to each other with drilling pump.Pole-changing motor can be realized two-stage or the above speed change of two-stage, and fluid coupling can be realized stepless speed regulation, like this two is joined together, and just can realize the stepless speed regulation to drilling pump.
This system adopts PLC to control.PLC links to each other with the high power solid state relay, and the high power solid state relay links to each other with pole-changing motor.Send the tach signal of drilling pump when the driller chamber after, what scope PLC at first judges this speed in, determines to select the number of pole-pairs of pole-changing motor then; After definite motor number of pole-pairs, because PLC links to each other with driving device for step-by-step, driving device for step-by-step links to each other with the fluid coupling scoop tube, and send signal by PLC this moment, and the displacement of control fluid coupling scoop tube reaches the rotating speed that needs.
This device and traditional AC-SCR-DC with AC-AC frequency control of motor speed compare, greatly reduce cost, and have simple in structurely, speed governing is convenient, is easy to advantages such as maintenance, has popularizing prospect preferably.
Description of drawings
Fig. 1 is the general principles figure of the high-power drilling pump drive unit of the utility model
Fig. 2, Fig. 3 are the pole-changing motor elementary diagrams of the high-power drilling pump drive unit of the utility model
Embodiment
Further specify the utility model below in conjunction with accompanying drawing.
Pole-changing motor (1) is connected with fluid coupling (2), and coupler is connected with drilling pump (4) by gear reducer (3), because the underpower of separate unit motor, so adopt two motors to drive drilling pump.
The double speed pole-changing motor has six tap U, V, W and R, S, T, is arranged in the connection box for motor (5).U, V, W link to each other with power supply (17) in low speed, and R, S, T are unsettled; U, V, W short circuit at a high speed, R, S, T link to each other with power supply (17).Specifically controlled by PLC (12): in low speed, PLC (12) sends signal (14), makes solid-state relay (8) get electric connection; In at a high speed, PLC (12) sends signal (15) and (16), makes solid-state relay (9) and (10) get.Its repeat circuit (9) makes pole-changing motor tap R, S, T connect power supply, and relay (10) makes tap U, V, W short circuit.
Variable speed fluid coupling (2) directly links to each other with pole-changing motor (1), and fluid coupling can be realized stepless speed regulation, and its speed governing is to lean on the displacement of scoop tube (6) to realize.In the process of speed governing, PLC (12) sends concrete rate signal (11), and driving device for step-by-step (7) is converted to displacement signal with signal (11) and promotes the position that scoop tube (6) reaches to be needed, thereby obtains needed output speed.
Rate setting signal is sent by the driller chamber, and signal is passed to PLC (12) through (13).
Entire work process is as follows: the driller sends the chamber rate signal → PLC and judges velocity magnitude scope → select the wiring of pole-changing motor → reach according to the displacement → drilling pump of the concrete size control scoop tube of the speed jig frequency of needs according to the magnitude range of speed.
Claims (3)
1, high-power drilling pump drive unit, mainly form by pole-changing threephase asynchronous (1), variable speed fluid coupling (2), gear reducer (3), driving device for step-by-step (7), PLC (12), high power solid state relay (8) (9) (10) etc., it is characterized in that, pole-changing motor (1) directly links to each other with fluid coupling (2), fluid coupling (2) links to each other with gear reducer (3), and gear reducer (3) links to each other with drilling pump (4).
2, high-power drilling pump drive unit according to claim 1 is characterized in that, PLC (12) links to each other with high power solid state relay (8) (9) (10), and high power solid state relay (8) (9) (10) links to each other with pole-changing motor (1).
3, high-power drilling pump drive unit according to claim 1 is characterized in that, links to each other with driving device for step-by-step (7) with PLC (12), and driving device for step-by-step (7) links to each other with fluid coupling scoop tube (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520035187 CN2835649Y (en) | 2005-08-19 | 2005-08-19 | High power drilling pump driver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520035187 CN2835649Y (en) | 2005-08-19 | 2005-08-19 | High power drilling pump driver |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2835649Y true CN2835649Y (en) | 2006-11-08 |
Family
ID=37300304
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520035187 Expired - Fee Related CN2835649Y (en) | 2005-08-19 | 2005-08-19 | High power drilling pump driver |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2835649Y (en) |
-
2005
- 2005-08-19 CN CN 200520035187 patent/CN2835649Y/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20061108 Termination date: 20090921 |