CN202195907U

CN202195907U - Torque meter circuit of oil well casing tongs

Info

Publication number: CN202195907U
Application number: CN2011203367654U
Authority: CN
Inventors: 杨建�; 刘德全; 曹杰
Original assignee: TIANJIN FULANKE TECHNOLOGY TRADE CO LTD
Current assignee: TIANJIN FULANKE TECHNOLOGY TRADE CO LTD
Priority date: 2011-09-08
Filing date: 2011-09-08
Publication date: 2012-04-18
Anticipated expiration: 2021-09-08

Abstract

The utility model relates to a torque meter circuit of oil well casing tongs, which consists of an industrial personal computer and a slave computer. The industrial personal computer which serves as an upper computer is in communication connection with the slave computer which serves as a lower computer through an RS232 communication interface or an RS232/485 switching circuit interface. A slave computer circuit module is formed by connecting a C8051 single chip microcomputer respectively with an analog to digital (A/D) conversion circuit, a photoelectrical coupling circuit and a relay. The torque meter circuit is connected with a pressure transmitter through an input end of the A/D conversion circuit, is connected with a photoelectric encoder through a photoelectrical coupling circuit, and is connected with and controls a venting valve though the relay. The torque meter circuit has the advantages of integrating the functions of acquiring and displaying circuit field data in real time, processing data and printing reports, automatically saving buckled parameters, simultaneously displaying curves of time changes of torsion and number of turns on the same coordinate, enabling working conditions of construction to be more visual, ensuring that detection and control functions of a system are achieved, reserving space for expansion of future functions, and being convenient to carry and flexible to operate.

Description

Oil well casing pincers torque gauge circuit

Technical field

The utility model relates to oil drilling machinery monitoring equipment, particularly a kind of oil well casing pincers torque gauge circuit.

Background technology

Casing job is an important link in drilling operation course, and its operation quality quality directly influences casing threads quality of connection, oil recovery amount and oil well life-span etc.At present, the sleeve pipe of domestic use relatively mixes and because of sealing means, stop-leak compound, caliber specification, grade of steel model, the thick difference of arm, and it is also different that control screws torque value, screws torque value and crosses conference and rise and split screw thread or produce excessive stresses; Too small meeting causes the insufficient strength that is threaded, and causes poor sealing etc.The structure of existing casing tongs torque gauge is generally: 1. the error that pointer torsion gage demonstration dependence personal monitoring, record screw torque value is big, is accurately controlled by manual work and screws moment of torsion, and operating personnel must have certain experience and learning process to be competent at.2. single-chip microcomputer digital display structure only shows and writes down the torque value and the last button number of turns, screws moment of torsion by manual control, and operating personnel must have certain experience and learning process to be competent at, at the bottom of the automaticity.3. the complicated volume of upper and lower computer formation multiple power supplies electric power-feeding structure is big, and torsion number of turns curve corresponding relation is directly perceived, failure rate is high.Therefore, improving monitoring, record and the control automatization level that casing threads screws the moment of torsion journey of going into the well is the urgent problems that solve of needs.And at present domestic do not have as yet a kind ofly can reach real-time monitoring, show that corresponding hyperbolic curve and computer management are that the casing tongs torque gauge circuit of one occurs, and do not see that document has the report of technical article in this respect in real time yet.

Summary of the invention

The purpose of the utility model is exactly for overcoming the deficiency of prior art; Screw the urgent problem that solves of these needs of moment of torsion to monitoring, write down, control the casing threads of going into the well; Oil well casing pincers torque gauge circuit design scheme is provided; Make the casing tongs torque gauge integrate on-site data gathering demonstration, data processing, data management, casing job management, make the casing job process become the specialized management system, make it standardization, standardization.

The utility model is to realize through such technical scheme: oil well casing pincers torque gauge circuit; It is characterized in that; Be made up of industrial computer and slave, industrial computer is as host computer, is connected with communicating by letter as the slave of slave computer through RS232 communication interface or RS232/485 change-over circuit interface; The slave circuit module connects A/D change-over circuit, photoelectricity coupled circuit and relay respectively by the C8051 single-chip microcomputer and constitutes; The C8051 single-chip microcomputer connects pressure unit through the input end of A/D change-over circuit, connects photoelectric encoder through the photoelectricity coupled circuit, connects and the control venting valve through relay.

The beneficial effect of the utility model: oil well casing pincers torque gauge circuit makes PC from machine integrated, and is easy to carry, flexible operation; Real-time collection of field data and demonstration, data processing, report printing are gone up the button parameter in one, automatic storage; The time changing curve that on same coordinate, shows torsion, the number of turns simultaneously makes the construction operating mode more directly perceived; Make that to screw torque value just right; Automatically show the well type according to input working parameter, deep-seated is put under the prompting sleeve pipe; Be designed with manually, automatic switching control equipment improves system reliability and adapts to workman's operating habit; Use integrated box car to solve problems such as the loaded down with trivial details carrying inconvenience of on-the-spot installing/dismounting as platform; System has selected higher Hardware configuration for use, has guaranteed that system detects the realization of control function, and is that the space has been reserved in the expansion of function in future.

Description of drawings

Fig. 1, oil well casing pincers torque gauge circuit structure diagram;

Fig. 2, program flow diagram.

Embodiment

Understand the utility model for clearer, describe the utility model in detail in conjunction with accompanying drawing and embodiment:

Be made up of industrial computer and slave like Fig. 1, oil well casing shown in Figure 2 pincers torque gauge circuit, industrial computer is as host computer, is connected with communicating by letter as the slave of slave computer through RS232 communication interface or RS232/485 change-over circuit interface;

The slave circuit module connects A/D change-over circuit, photoelectricity coupled circuit and relay respectively by the C8051 single-chip microcomputer and constitutes; Input end through the A/D change-over circuit connects pressure unit, connects photoelectric encoder through the photoelectricity coupled circuit, connects and the control surplus valve through relay;

Gather hydraulic jack pressure by pressure unit, send the A/D change-over circuit to the 4-20mA current signal, the 4-20mA current signal converts digital signal into and sends the C8051 single-chip microcomputer to through A/D, is scaled torque value through SCM program;

Upper industrial computer software is set torsion in advance; When the detected torque value of slave reached the host computer setting value, host computer then sent instruction, and single-chip microcomputer is according to the instruction control actuating of relay, and then the work of control venting valve;

Gather the driving gearshaft revolution of casing tongs by photoelectric encoder; The photoelectric encoder output pulse signal is shaped as continuous square-wave signal through the photoelectricity coupled circuit and is transferred to single-chip microcomputer; Detain the number of turns on the single-chip microcomputer record sleeve pipe, this moment, the torsion and the number of turns showed correlation curve in real time by host computer.Its principal feature is following:

(1), native system is become by upper and lower mechanism and realizes integrated.

(2), native system integrates the real-time collection of field data and demonstration, data processing, report printing, comprehensive evaluation, makes casing job systematization, standardization, for estimating the casing job quality reliable foundation is provided.

(3), in real time show that sleeve pipe screws moment of torsion, screws the number of turns, dynamically show curve that sleeve pipe screws torque value and change with the number of turns, and sleeve pipe screw moment of torsion change curve in time.

(4) but, the measurement data long preservation, and can become the output of form and figure by printer prints.

(5), control automatically.In order to reach point-device final torque value, system adopts pressure hysteresis and screws moment of torsion calculates the accurate instantaneous moment of torsion, in order to open surplus valve, to make the very approaching control torque value that sets of the moment of torsion that finally reaches.

(6), easy and simple to handle.Under automatic control state, system can accomplish whole collecting works without any need for external condition; Under non-automatic control situation, whole system only needs the casing tongs operator to provide an end signal to get final product in the casing job process.

(7), this cover system is applicable to Chinese Win XP operating system at present, and Chinese and English interface is provided, the metric and English translation function can be used for external service.

Technical parameter:

(1), measurement range and permissible error:

Moment of torsion: 0～35kN.m error≤2% (measurement range can be selected);

The number of turns: 0～99.99 error≤0.1 circle;

(2), service condition:

Environment temperature :-10～+ 70 ℃;

Relative humidity :≤85%;

Power supply: single-phase AC 220V 50Hz;

Binding clip rotating speed :≤100r/min;

Power supply allows fluctuation range: 185～240V, 49～51Hz;

(3), the scope of application:

Be applicable to TQ-35, TQ-20, TQ-16, Ai Keer 13-3/8, Vad good fortune W16-25 jacket pipe wrench.

Oil well casing pincers torque gauge operation steps comprises:

1, under the situation of outage, connects host computer respectively, connects by box, photoelectric encoder, electromagnetic relief valve etc. with the signal cable line.Attention: signal wire is wanted overhead cabling, and adjustment signal wire length had both been crossed pine and also do not wanted tension, avoided in operation process, breaking signal cable.

2, detected pressures, moment of torsion, the number of turns three values, method is: at first start, selected project starts in program then and demarcates window;

3, pitcher pump is connected with the torque meter pouring orifice, oil is injected the pipeline of torque meter, torque value is risen more than 2kN.m; Stablize a value, reexamine number of turns value: the turning set pipe wrench, observe number of turns value and whether changing; If the number of turns value in the demarcation window is explained in proper working order changing; Otherwise should check whether photoelectric encoder, transmission shaft, set nut be good, and cable and plug have or not short circuit place, if any short circuit with open circuit, check out the position, up to good fault handling.

More than three numerical value detected close after, can operate as normal, with reference to the content in the software manual, carry out the parameter setting.

According to above-mentioned explanation, can realize the scheme of the utility model in conjunction with art technology.

Claims

1. oil well casing pincers torque gauge circuit is characterized in that, is made up of industrial computer and slave, and industrial computer is as host computer, is connected with communicating by letter as the slave of slave computer through RS232 communication interface or RS232/485 change-over circuit interface; The slave circuit module connects A/D change-over circuit, photoelectricity coupled circuit and relay respectively by the C8051 single-chip microcomputer and constitutes; The C8051 single-chip microcomputer connects pressure unit through the input end of A/D change-over circuit, connects photoelectric encoder through the photoelectricity coupled circuit, connects and the control venting valve through relay.