RU2272262C1 - Device for measuring torsion torque - Google Patents

Abstract

FIELD: engineering of force-measuring equipment, possible use for measuring torsion torque in force transmissions of drilling plant rotors.

SUBSTANCE: device for measuring torque has mechanism for transforming torque to hydraulic pressure, including shaft with profiled head, within channels of which floating pistons are positioned, and body, wherein stops are positioned interacting with pistons, while floating pistons are positioned axially and made in form of springs, connected to stops by means of additional ball pushers, abutting on ring-shaped surfaces of conic recesses respectively in stops and pistons, with possible continuous operation of device at spring-ball sleeve mode in direct and reverse movement directions for increased precision of device calibration and damped rotor shaft oscillations during generator of torsion torque.

EFFECT: maintained power transmission onto rotor shaft, improved device calibration precision, possible utilization of device in broad ranges of torsion torques, improved reliability, safety, simplified maintenance, damped rotor shaft oscillations.

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Description

The invention relates to the field of power engineering and can be used to measure torque in power transmissions of rotors of drilling rigs.

A known device for measuring torque (AS USSR No. 96281, MKI G 01 L 3/14, 10.30.50), containing a torque transducer into axial force and a hydraulic mass dose, which does not provide the required measurement accuracy. The disadvantage of this meter is the inability to measure alternating torque.

The closest technical solution to the present invention is a device for measuring torque (AS USSR No. 6748353, MKI G 01 L 3/24, 08/05/79), containing a mechanism for converting torque into a hydraulic signal, made in the form of a leading a shaft with a figured head, in the tangential channels of which the pistons are placed, and a driven shaft with a housing in which the stops interacting with the pistons are placed, and a measuring system. Its disadvantage is the inability to ensure accurate calibration of the device, the absence of damping of torsional vibrations, the limitation of the measurement of alternating torque due to the critical pressure and its own large weight, which increases the difficulty of installation, maintenance and the danger of operation.

The present invention solves the problem of providing power transfer to the rotor shaft, increasing the accuracy of calibration of the device, the possibility of using it in a wide range of torques, increasing the reliability of the device, safety, ease of maintenance, as well as damping the vibrations of the rotor shaft.

The problem is solved in that in a torque meter containing a mechanism for converting torque into hydraulic pressure, including a shaft with a figured head, in the channels of which floating pistons are placed, and a housing in which the stops interacting with the pistons are placed, according to the invention, floating pistons are placed axially and made in the form of springs connected with stops by means of additional ball pushers resting on the annular surfaces of the conical holes, respectively, in the stops and pistons, with the possibility of ensuring the operation of the device in the mode of a spring-ball coupling in the forward and reverse directions of movement to increase the accuracy of calibration of the device and damping oscillations of the rotor shaft when converting torque.

Figure 1 shows a General view of a torque meter, a longitudinal section; figure 2 is a section aa in figure 1.

The torque meter contains a housing with a gear sprocket 1, stops 2, a shaft 3 with a figure head with splines 4 and a flange in the middle 5, radial pins 6 connecting the gear sprocket 1 with stops 2, two floating pistons 7, made in the form of springs (for example, slotted), placed axially on both sides of the flange 5 and connected to the flange 5 by means of axial pins 8, conical holes 9 made in equal numbers on the end surfaces of the stops 2 and pistons 7, in which the ball pushers 10 are located, the channel 11 through which supper-ball mechanism, including stops 2, piston springs 7 and ball pushers 10, hydraulically connected with a communication line with secondary devices (not shown). The working cavity of the meter is sealed with O-rings 12 and 13 mounted on the piston springs 7. From falling out, the radial pins 6 are secured by slotted springs 14. The shaft 3 can rotate relative to the housing 1 by a certain angle determined by the compression of the piston-spring 7.

The principle of operation of the torque meter is as follows. The hydraulic system of the meter is pre-filled with a working fluid, which is indicator in this case, with a small initial pressure, which is necessary to select backlash and create a prestressed state of the meter. Under the action of torque, the housing 1 through the stops 2 and ball pushers 10 acts on the piston springs 7 located on the side of the force, which, moving in the axial direction, increase the pressure of the working fluid, then the force from the fluid pressure through the meter shaft 3 and Slots 4 are transmitted to the rotor shaft, bringing it into rotation. At the same time, the pressure of the working fluid, proportional to the transmitted torque, is transmitted through the channels 11 and the signal line to the secondary devices for visual control and registration on the chart form. The operation of the torque meter during the reversal of the rotor occurs in a similar manner.

The present invention, in comparison with the prototype, provides the expansion of the technological capabilities of the device due to the shape of the piston holes and conical stops, the execution of pistons in the form of a spring and the use of additional ball pushers, which makes it possible to calibrate the device and measure alternating torque with the necessary accuracy, to increase the reliability of the device for by reducing the fluid pressure and damping the oscillations of the rotor shaft when converting torque and m Jet be used in the petroleum engineering, oil production in power transmissions rigs rotors I and II category.

Claims (1)

A torque meter comprising a mechanism for converting torque to hydraulic pressure, including a shaft with a figured head, in the channels of which floating pistons are placed, and a housing in which stops interacting with the pistons are placed, characterized in that the floating pistons are axially arranged and made in the form springs connected to the stops by means of additional ball pushers resting on the annular surfaces of the conical holes in the stops and pistons, respectively, with the possibility of providing Ota apparatus spring-ball coupling mode in the forward and reverse directions of movement to improve accuracy of the calibration device and quenching oscillations in the rotor shaft torque conversion.

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