CN2356336Y - Automatic control torque instrument for hydraulic power oil pipe clamp - Google Patents
Automatic control torque instrument for hydraulic power oil pipe clamp Download PDFInfo
- Publication number
- CN2356336Y CN2356336Y CN 98242561 CN98242561U CN2356336Y CN 2356336 Y CN2356336 Y CN 2356336Y CN 98242561 CN98242561 CN 98242561 CN 98242561 U CN98242561 U CN 98242561U CN 2356336 Y CN2356336 Y CN 2356336Y
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- hydraulic power
- circuit
- chip microcomputer
- hydraulic
- control torque
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- Expired - Fee Related
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Abstract
The utility model provides an automatic control torque instrument for a pair of hydraulic power pincers. A pressure sensor connected with the input end of an A/D converter is arranged on a hydraulic oil cylinder of a pair of hydraulic power oil pipe pincers. The output end of the A/D converter is connected to an SCM which is connected with a switch circuit. A contact switch in the switch circuit is connected with a venting valve which is connected in parallel with a hydraulic motor arranged in a hydraulic pressure oil circuit. The SCM is also connected with a display, a displacement sensor, an alarm circuit and a printer. The utility model can control torque of the hydraulic power oil pipe pincers automatically. The operation is accurate, stable and reliable. The defects that an oil pipe is too tight, or too loose, or is buckled wrongly, etc. when the oil pipe threads are screwed tightly are avoided.
Description
The utility model relates to a kind of automaton, especially for the moment of torsion automaton of hydraulic power tubing tongs.
The hydraulic power tubing tongs that is used for oil field loading and unloading oils well casing male screw, it mainly is made up of main pincers, back-up tong, oil motor, hydraulic jack and pillar guide rod, and its power that adopts oil motor to provide is tightened the screw thread of multiple-tubing string or demolition by root by main pincers and back-up tong.The hydraulic power tubing tongs is twisted and to be pulled that power is big, efficient is high, but the control of its moment of torsion is generally adopted surplus valve, is realized indirectly by manually-operated, in the course of the work, particularly when threaded together, easily produce tension, cross pine and thread alternating (the but silk that is commonly called as) phenomenon, and cause oil pipe to come off in the down-hole, cause human and material resources and economic loss.For this reason, the someone has invented application number and is: the 97235655.x name is called: the hydraulic power tongs torque control valve.Though it can be controlled operation torque, the corresponding relation of charge oil pressure and moment of torsion is nonlinearities change, and can not accurately control the size of its moment of torsion, and the often adjustment of specified operation torque value, thereby very inconvenient in use.
The purpose of this utility model is to provide a kind of and can realizes accurately the moment of torsion of hydraulic power tubing tongs, the automatic automatic control torque instrument of controlling of hydraulic power tubing tongs.
Technical solution of the present utility model is: it mainly is made up of pressure transducer, A/D transducer, single-chip microcomputer, control circuit and venting valve; Pressure transducer is loaded on the hydraulic jack of hydraulic power tubing tongs, and pressure transducer links to each other with the input end of A/D transducer, and the output terminal of A/D transducer is connected on the single-chip microcomputer; Single-chip microcomputer is connected to the on-off circuit that links to each other with solenoid valve, and solenoid valve links to each other with the venting valve that oil motor in the hydraulic power tubing tongs hydraulic circuit is in parallel.
Single-chip microcomputer is connected to display through driving circuit.
Hydraulic power tubing tongs master clamps on the caliper at 2-8mm place, the rotary chuck outside displacement transducer is housed, and above-mentioned displacement transducer also links to each other with single-chip microcomputer;
Be connected to the warning circuit of forming by audio oscillator circuit and amplifying circuit on the single-chip microcomputer.
Single-chip microcomputer is connected to printer through high-speed register.
The utility model compared with prior art, it can realize control automatically to the moment of torsion of hydraulic power tubing tongs, its work is accurate, stable, reliable, easy to use, overcome the hydraulic power tubing tongs and tension, weak point such as pine excessively when tightening tubing thread, have occurred, and can in time differentiate thread alternating, avoided human and material resources and economic loss.
Description of drawings:
Fig. 1 is the structural representation of the utility model embodiment;
Fig. 2 is the fundamental diagram of the utility model embodiment.
Below in conjunction with accompanying drawing the utility model and embodiment are described in further detail:
The utility model mainly is made up of pressure transducer Y1, displacement transducer Y2, A/D transducer, single-chip microcomputer, warning circuit, control circuit, venting valve 4, driving circuit, display, register and printer; Pressure transducer Y1 (adopts the Hui Sidun bridge pressure sensor, HM type sensor as Tianshen Electric Appliance Co., Ltd., Hefei City's production) is loaded on the hydraulic jack 7 of hydraulic power tubing tongs, and pressure transducer Y1 links to each other with the input end of A/D transducer (adopting ADC0804GAJF), and the output terminal of A/D transducer is connected to the P1 pin of the I/O interface of single-chip microcomputer; Above-mentioned single-chip microcomputer adopts the TA89C51 type; The T1 interface of single-chip microcomputer is connected to the on-off circuit of being made up of diode VD1, triode BG1, resistance R 1, relay J 1, the contact switch K of the relay J 1 in the said switching circuit links to each other with solenoid valve J2, and solenoid valve J2 links to each other with the venting valve 4 that oil motor M in the hydraulic circuit is in parallel.The proximity Hall switch that displacement sensing Y2 adopts Shanghai Tianrui instrument appliance company to produce, clamp 1 jaw rotary chuck edge hydraulic power tubing tongs master two Nd-Fe-B magnet steels 5 are housed symmetrically, on proximity Hall switch is loaded on and clamps 1 caliper apart from the power tubing tongs master of surging at neodymium iron iron boron magnet steel 5mm place, proximity Hall switch and link to each other with the RXD interface of single-chip microcomputer; The T1 interface of single-chip microcomputer is connected to the warning circuit of being made up of audio oscillator circuit and amplifying circuit.Above-mentioned audio oscillator circuit is made of resistance R 2, R3, capacitor C 1, C2, C3, HA17555 audio frequency oscillator; Above-mentioned amplifying circuit is made of resistance R 4, capacitor C 4, C5, C6, LM386 note amplifier and loudspeaker D.Single-chip microcomputer is connected to TPUP-A type miniprinter through high-speed register SN74LS273.Single-chip microcomputer through TMP82C79 programme diffusing opening, form driving circuit by SN74LS224, SN7LS138, DS75451 etc. and connect display.
The hydraulic power tubing tongs is when stubborn button work, two oil pipes 3,8 respectively by the main pincers 1 of hydraulic power tubing tongs, chuck clamping in the back-up tong 2, the power driven rotary that the rotary chuck of main pincers 1 is provided by the oil motor M in the hydraulic circuit, oil pipe 3 also rotates thereupon and progressively tightens mutually with oil pipe 8, two oil pipes 3, produce moment of torsion between 8 the screw thread, the afterbody twisting of back-up tong 2, spread out and connect the hydraulic jack 7 generation pressure that 6 pairs of pillar guide rods leading pincers 1 and back-up tong 2 are loaded on back-up tong 2 afterbodys, make the pressure transducer Y1 that is loaded on the hydraulic jack 7 obtain a pressure signal, this pressure signal also becomes the change feed signals of the 1-5V that changes with operation torque by pressure transducer Y1, becomes feed signals and is transformed into modulus signal through the A/D transducer and sends in the single-chip microcomputer; The programmable device of single-chip microcomputer is set the nominal torque value.When the real-time working moment of torsion reaches the nominal torque value, unit output control signal is delivered in the warning circuit, control signal produces alerting signal by the HA17555 audio frequency oscillator in the audio oscillator circuit, and the LM386 note amplifier that is coupled in the audio amplifier circuit through capacitor C 1 carries out the audio frequency amplification, be coupled on the loudspeaker D through capacitor C 4 again, realize audible alarm.Single-chip microcomputer outputs to control signal in the on-off circuit simultaneously, and this control signal makes triode BG1 conducting after resistance R 1 dividing potential drop, relay J 1 adhesive, and contact switch K closure makes solenoid valve J2 adhesive, and the unidirectional venting valve 4 that links to each other with solenoid valve J2 is opened.The hydraulic oil that enters oil motor M from oil inlet P enters oil return opening 0 from venting valve 4, and oil motor 4 runs out of steam, and the rotary chuck on the main pincers 1 stops operating, thereby reaches the purpose of automatic control torque.Simultaneously, single-chip microcomputer is transported to display with torque signal through driving circuit, demonstrates the real work torque value.When two oil pipes 3,8 when thread alternating occurring, though its operation torque reaches the nominal torque value, oil motor M quits work, but the rotating cycle of oil pipe 3 does not reach specified value, its distinguishing rule is: when rotary chuck drives oil pipe 3 rotations, be loaded on the also rotation thereupon of two Nd-Fe-B magnet steels of rotary chuck edge, the every Rotate 180 degree of Nd-Fe-B magnet steel, be loaded on main pincers 1 caliper and export a pulse signal apart from the Hall switch at Nd-Fe-B magnet steel 5mm place, this pulse signal is through single-chip microcomputer, driving circuit, driving display, demonstrate the number of turns of rotation, promptly the number of turns of buckleing on two oil pipes is discerned for the operator, whether reach specified going up and detain the number of turns, the thread alternating phenomenon whether occurs and determine.And single-chip microcomputer is transported to all running technology data in the TPUP-A printer through the SN74LS273 high-speed register, prints record, identifies construction quality for engineering technical personnel, and can make technology files and preserve.
The hydraulic power tubing tongs is when shackle is worked, and 6 pairs of hydraulic jacks 7 of pillar guide rod do not produce pressure, thereby will not control moment of torsion during shackle.
Claims (5)
1. the automatic control torque instrument of hydraulic power tubing tongs is characterized in that mainly being made up of pressure transducer, A/D transducer, single-chip microcomputer, control circuit and venting valve; Pressure transducer is loaded on the hydraulic jack of hydraulic power tubing tongs, and pressure transducer links to each other with the input end of A/D transducer, and the output terminal of A/D transducer is connected on the single-chip microcomputer; Single-chip microcomputer is connected to the on-off circuit that links to each other with solenoid valve, and solenoid valve links to each other with the venting valve that oil motor in the hydraulic circuit is in parallel.
2. the automatic control torque instrument of hydraulic power tubing tongs according to claim 1 is characterized in that single-chip microcomputer is connected to display through driving circuit.
3. the automatic control torque instrument of hydraulic power tubing tongs according to claim 1 and 2, the power tubing tongs master that it is characterized in that surging clamps on the caliper at 2-8mm place, the rotary chuck outside displacement transducer is housed, and above-mentioned displacement transducer also links to each other with single-chip microcomputer;
4. the automatic control torque instrument of hydraulic power tubing tongs according to claim 1 and 2 is characterized in that also being connected on the single-chip microcomputer warning circuit of being made up of audio oscillator circuit and amplifying circuit.
5. the automatic control torque instrument of hydraulic power tubing tongs according to claim 1 and 2 is characterized in that single-chip microcomputer is connected to printer through high-speed register.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98242561 CN2356336Y (en) | 1998-10-30 | 1998-10-30 | Automatic control torque instrument for hydraulic power oil pipe clamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98242561 CN2356336Y (en) | 1998-10-30 | 1998-10-30 | Automatic control torque instrument for hydraulic power oil pipe clamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2356336Y true CN2356336Y (en) | 1999-12-29 |
Family
ID=33989103
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 98242561 Expired - Fee Related CN2356336Y (en) | 1998-10-30 | 1998-10-30 | Automatic control torque instrument for hydraulic power oil pipe clamp |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2356336Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103323159A (en) * | 2013-07-01 | 2013-09-25 | 山东墨龙石油机械股份有限公司 | Checking method of oil casing screwing machine torque and checking device thereof |
| CN103335766A (en) * | 2013-06-07 | 2013-10-02 | 天津钢管集团股份有限公司 | Special-buckle petroleum casing coupling screwing information acquisition and processing system and torque calibration method |
| CN104791309A (en) * | 2015-03-17 | 2015-07-22 | 江苏中石机械有限公司 | Screw-on high-gear torque and low-gear torque control method of power tongs |
| CN112031682A (en) * | 2020-08-13 | 2020-12-04 | 无锡智瀚能源科技装备与服务有限公司 | Power tong control system, operation method thereof and workover rig comprising power tong control system |
-
1998
- 1998-10-30 CN CN 98242561 patent/CN2356336Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103335766A (en) * | 2013-06-07 | 2013-10-02 | 天津钢管集团股份有限公司 | Special-buckle petroleum casing coupling screwing information acquisition and processing system and torque calibration method |
| CN103323159A (en) * | 2013-07-01 | 2013-09-25 | 山东墨龙石油机械股份有限公司 | Checking method of oil casing screwing machine torque and checking device thereof |
| CN104791309A (en) * | 2015-03-17 | 2015-07-22 | 江苏中石机械有限公司 | Screw-on high-gear torque and low-gear torque control method of power tongs |
| CN112031682A (en) * | 2020-08-13 | 2020-12-04 | 无锡智瀚能源科技装备与服务有限公司 | Power tong control system, operation method thereof and workover rig comprising power tong control system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |