RU208592U1 - Device for one-way transmission of torque - Google Patents

Abstract

The utility model relates to the oil and gas industry, namely to equip unloading units for submersible screw pumps for lifting formation fluid from oil wells. The technical result is to expand the functionality of the device for one-way transmission of torque due to the possibility of using it as a universal independent unit. housing, in the cavity of which on the drive shaft there are spring-loaded locking elements that interact with the hooks on the inner housing. The driven shaft is installed in the outer housing on the support. The drive shaft is made spring-loaded relative to the end piece. Blind threaded holes are made on the end surface of the connecting part. A ring limiting the reach of the locking elements is installed on the inner body. The locking elements are made in the form of dogs. The drive shaft and the driven shaft are splined. The driven shaft is connected to the inner housing by a spline connection. The supports are made in the form of radial plain bearings.

Description

The utility model relates to the oil and gas industry, namely, to equip unloading units for submersible screw pumps for lifting formation fluid from oil wells.

Devices for one-way transmission of torque are used to prevent reverse rotation and maintain the performance of screw pumps, with the wrong direction of rotation of the engine, as well as when transmitting torque.

Known is a device for one-way transmission of torque (according to patent RU 2672994), which is part of a device for unloading a screw submersible pump, containing an outer casing with a threaded connecting part, an end piece with a drive shaft mounted in it on a support, a driven shaft with an inner casing, in cavity of which spring-loaded locking elements are located on the drive shaft, interacting with the hooks on the inner housing. Its disadvantage is the impossibility of using the device for one-way transmission of torque as an independent, universal unit, which can be completed with various unloading devices of the screw submersible pump, since the lower nipple of the unloading device serves as a support for the driven shaft, which is a continuation of the drive shaft, providing a rigid connection.

The technical task of the utility model is the creation of a device for one-way transmission of torque, which is an independent unit, which can be completed with a device for unloading a screw submersible pump. The technical result is to expand the functionality of the device for one-way transmission of torque due to the possibility of using it as a universal, independent unit.

The technical result is achieved in a device for one-way transmission of torque, comprising an outer housing with a connecting part, an end piece with a drive shaft installed on a support, a driven shaft with an inner housing, in the cavity of which spring-loaded locking elements are located on the drive shaft, interacting with the hooks on an inner casing, characterized in that the driven shaft is mounted in the outer casing on a support. The drive shaft is made spring-loaded relative to the end piece. Blind threaded holes are made on the end surface of the connecting part. A ring limiting the overhang of the locking elements is installed on the inner body. The locking elements are made in the form of dogs. The drive shaft and the driven shaft are provided with splines. The driven shaft is spline-connected to the inner housing. Supports are made in the form of radial plain bearings.

The utility model is illustrated by drawings:

fig. 1 - device for one-way transmission of torque (section);

fig. 2 - connecting part of the outer casing;

fig. 3 - spring-loaded locking elements.

The device for one-way transmission of torque contains an outer cylindrical body 1 with a connecting part, which it is installed on the unloading device of the screw submersible pump. For this, threaded holes 2 are made on the end surface of the connecting part (Fig. 2), for example, the figure shows blind threaded holes 2, which allows the installation of a device for one-way transmission of torque using standard means, for example, threaded rods.

The outer casing 1 is threaded to the end piece 3. In the outer casing 1 and in the end piece, supports 4, 5 are installed for the driven and drive shafts 6, 7, respectively. Supports 4, 5 are made in the form of radial plain bearings (for example, from hard alloy, tungsten-cobalt alloy). The use of two supports 4, 5 as part of the device for one-way transmission of torque, allows to increase the functionality of the device for one-way transmission of torque, since it can be used as an independent unit, which can be completed with a device for unloading a screw submersible pump.

The driven shaft 6 is made with an inner housing 8 (cylindrical cup). They can be made in one piece (as shown in Fig. 1), or the driven shaft 6 can be spline-connected to the inner housing 8.

In the cavity of the inner housing 8, on the widening of the drive shaft 7, there are spring-loaded locking elements 9, which can be made in the form of pawls or cams. The drive shaft 7 is installed in the cavity of the inner housing 8 on a radial bearing 16, and is fixed in the axial direction by a cover 17.

The locking elements 9 interact with the hooks 10 on the inner housing 8, providing one-sided rotation of the driving and driven shafts 7, 6 relative to each other. The hooks 10 can be made in the form of grooves or in the form of through holes in the inner body 8. In the case of through holes, a ring 12 limiting the protrusion of the locking elements 9 can be installed on the inner body 8.

The drive shaft 7 can be made spring-loaded relative to the end piece 3: on the drive shaft 7, between the support 5 and the washer 14 with a retaining ring, a coil spring 13 is installed. The spring-loaded drive shaft 7 expands the functionality of the device for one-way transmission of torque, used as a universal, an independent unit, since it provides compensation for axial vibrations and shaft tolerances under loads in the line "device for unloading a screw submersible pump - a device for one-way transmission of torque - hydraulic protection". For connection with the unloading device of a submersible screw pump and with hydraulic protection, the driven and drive shafts 6, 7 are equipped with splines 11.

Claims (5)

1. A device for one-way transmission of torque, containing an outer housing with a connecting part, an end piece with a drive shaft installed on a support, a driven shaft with an inner housing, in the cavity of which spring-loaded locking elements are located on the drive shaft, interacting with the hooks on the inner housing , characterized in that the drive shaft and the driven shaft are provided with splines, the driven shaft is installed in the outer casing on a support, threaded holes are made on the end surface of the connecting part. 2. The device according to claim 1, characterized in that the drive shaft is spring-loaded relative to the end piece. 3. The device according to claim 1, characterized in that the locking elements are made in the form of dogs. 4. The device according to claim 1, characterized in that the driven shaft is connected to the inner housing by a splined connection. 5. The device according to claim 1, characterized in that the supports are made in the form of radial plain bearings.

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