RU2208157C1 - Guide device for logging cable or wire-rope - Google Patents

Abstract

FIELD: materials-handling machines, particularly, improvement of their units; applicable in well servicing in mining industry for lowering and hoisting of various downhole instruments and devices in hydrodynamic and geophysical researches, and in other industries where materials-handling machines are used. SUBSTANCE: guide device includes bearing member, side limiters, cable vertical limiter, holding-suspending unit, roller-type support with grooves on roller external surface and special groove. Said support is made in form of a row of roller packs each of which is axle- bearing-roller located in direction of cable or wire-rope movement over curved path of lifting-lowering type. Special groove is made in form of recess formed by side walls of side limiters and supporting surfaces or roller packs. Bearing member simultaneously serves as side limiters whose shape is upper part of semicircle periphery. Mounting holes for roller packs are made over central part of limiters. EFFECT: facilitated manufacture of guide unit with improved its dimensions and weight, reduced specific metal content by a factor of 2 and more. 4 cl, 2 dwg

Description

 The invention relates to hoisting-and-transport mechanisms, namely, to the improvement of their components, and can be used for servicing wells in the extractive industries for lowering and lifting various downhole tools and devices for hydrodynamic and geophysical studies.

 Known guide device for cables, cables - block balance [Reference geophysics. T. 2, Moscow, 1961, p. 679, 687, 690], used to direct the geophysical cable into the well. It consists of a roller along which the cable is routed into the well, and a suspension frame for the roller mounted above the wellhead and consisting of a support for the axis of the roller, a base, cheeks - side stops for the roller, a holder holding the axis of the roller, an arm for mounting the sensor cable tension.

 The disadvantages of this device are cumbersome and massive. Its dimensions are 1400 x 670 mm.

 Also known devices used in lifting and transport equipment [patent RU 2149820, IPC B 66 C 23/88; textbook for technical schools. Hoisting and transport devices, Moscow: Mechanical Engineering, 1967, p. 23-27; Encyclopedic reference book. Engineering. T. 9, M .: Engineering literature, 1950, p. 794; US patent 5645269 A, IPC B 66 D 1/00]. These devices are used to maintain cables, ropes, cables and the direction of their movement and have a supporting frame or housing, one or more enclosed roller blocks with ring grooves and streams on the rims of the rollers for reliable placement of the cable, rope, cable, axis, bearings rolling.

 The disadvantages of the above devices are the complexity of the design and maintenance, bulkiness, metal consumption and a large mass.

 Also known is a guide device from a roller system placed in a structure [patent RU 2173365, IPC D 07 B 7/12]. In this design, the roller system provides the movement of the steel rope along a variable curved path. Guides - support rollers are located on the periphery of round rotors and are bent around by a movable rope.

 The disadvantage of this device is the large size and complexity of the design.

 It is also known a guiding device from a system of rollers placed in the installation [patent RU 2150025, IPC F 04 B 47/02], designed to lift oil from wells. It consists of two guide rollers located on a mounting rack, fixedly mounted on the foundation.

 The disadvantage of this device is its large size and metal consumption.

 A rope guiding device is also known [patent RU 2120911, IPC B 66 D 1/36] related to hoisting-and-transport mechanisms. The guide device of the ropes contains a frame on which two pairs of rollers mounted one above the other are mounted. A groove is made on the supporting surfaces of the rollers.

 The disadvantages of the device include massive structure.

 Also known are devices for guiding, feeding cables, cables. ropes and other long lengthy bodies [patent US 5573226, IPC B 66 D 3/08; patent GB 2296230, IPC B 66 F 19/00]. The devices contain units with several supporting guide rollers, caged, mounted on a supporting frame or housing.

 The disadvantages of the structures in the examples are also cumbersome, massive and restrictions on the implementation of supporting or supporting functions.

 Closest to the claimed device for routing cables or cables is the device [Roller guide upper MP-001.5V. Passport. Manufacturer ZAO "Geophysical company DELTA-LOT", Saratov, 1999], consisting of a supporting frame-base, on which a roller-type support is mounted with one support roller and a groove-stream formed on its support surface as a side cable stopper , axle with bearings, suspension holder assembly, vertical cable stop, roller stream cleaning assembly. When the traction element moves along the roller, it moves without unwanted displacement to the left or right.

 This guiding device is rather bulky and has a large mass (about 50 kg), which complicates the operation of the nodes of lifting machines and mechanisms at a height when the responsible assembly is located in the upper part of the lifting device, which makes it necessary to take additional measures for the reliability of the entire lifting equipment as a whole. This significantly increases the cost of work and reduces its degree of safety. In addition, the implementation of the device is technologically difficult.

 The device is also metal-intensive. The support roller is cast and represents a massive, one-piece massive support structure, the mass of which, for example, for a roller with a circumference of 1.5 meters is about 25 kg.

 The objective of the proposed solution is to increase the manufacturability of the manufacturing of the guide unit while improving its dimensions and weight - reducing the metal consumption by two or more times.

 The essence of the invention lies in the fact that in the guiding device for a geophysical cable or cable, including a supporting element, side stops, a vertical cable stop, a suspension holder assembly, a roller type support with grooves on the outer surface of the rollers and a stream, the support is made in the form of a number of roller packages, each of which is an axis-bearing-roller, placed in the direction of movement of the cable or cable along a curved trajectory of the "rise-descent" type, and the stream is made in the form of a groove formed by the side cheeks and supporting surfaces of roller packages, the bearing element serving simultaneously as side stops, the shape of which is the upper part of the periphery of the semicircle, along the length of which mounting holes for roller packages are made along their central part.

 In addition, a guiding device for a geophysical cable or cable is claimed, the difference of which is the presence of at least one cable or cable tension sensor while maintaining all the features of the claimed device.

 Another improvement of the inventive guide device is the connection of the above tension sensor, at least one of the elastically mounted roller packages.

 In addition, a variant of the improvement of the guide device for a geophysical cable or cable is claimed due to the presence of at least one linear motion sensor of the cable or cable connected to the roller package.

 The description of the proposed solution is illustrated by drawings, in which Fig. 1 is a general view of the guide device, in Fig. 2 it is with the side stop removed and a conditional section taken, where 1 is the housing, 2 is the holder-suspension assembly, 3 is the side housing limiter, 4 - roller package axis-bearing-support roller, 5 - axis of the roller package, 6 - bearing, 7 - support roller, 8 - cable, cable, 9 - cleaning unit of the creek of the roller, 10 - vertical stopper of the cable, cable, 11 - cheek lateral limiter, 12 - mounting holes, 13 - linear displacement sensor, 14 - sensor a tension 15 - bolt connection.

 The inventive device consists of a metal housing 1 composed of side stops 3 with cheeks 11 to prevent lateral displacements of the moving cable or cable. A vertical cable stop 10 prevents the cable from falling out of the guide groove. On the body, the mount of the suspension bracket 2 is rigidly fixed, as a rule, from above, connecting the guide device, for example, with a lifting tower, a rotary table, etc. The fastening elements of the housing of the guiding device are carried out by standard bolted connections 15 through the mounting holes 12. The roller packages 4 are arranged in such a way as to ensure smooth movement of the cable or cable 8 without its sharp excessive bending along the groove - by the handle, which are formed by the cheeks of the side stops 11 located opposite each other friend on the sides, and the supporting surfaces of the roller packages from the bottom. The holder-suspension assembly is placed along the axis of symmetry of the guiding device and moved outside the working area of the rewound object (cable, cable, etc.). To remove contaminants from the supporting surfaces of the roller bags, cleaning units 9, mechanically removing dirt, are fixed on the side stops next to each bag. The linear displacement sensor 13 and the tension sensor 14 are installed on the outside of the side stops.

 Inside the housing there is a clip of roller bags 4, consisting of an axis 5, rolling bearings 6 and support rollers 7, the number of which is usually 3 or more. Support rollers are made of corrosion-resistant high-strength alloys and have grooves on the working part to hold the rewindable object. Rolling bearings are sealed to protect against contamination. The number of packets is dictated by the specific operating conditions in specific operating conditions, including the weight load on the cable, the mechanical characteristics of the cable, etc. The roller packages are fastened in the guide device system by means of axles, the number of which is equal to the number of rollers placed around the circumference inside and oriented along the extended central part between the side stops. The formation of the axis-bearing-roller package is carried out before installation in a guiding device, in which these packages are installed in the mounting holes 12 located in the side stops of the housing. The holes are provided, as a rule, with the same pitch along the surface of the side stops and the same diameter.

 The operation of the device is as follows. A traction body - a cable or cable is laid in a groove - a stream of a guiding device. The device is fixed using the node of the holder-suspension, for example, on a lifting tower. The movement of the cable or cable is, for example, a winch. In this case, the cable or cable moves along the supporting surfaces of freely rotating roller packages along the groove of the stream, gradually changing the direction of its movement.

 The device, if necessary, is configured to measure the tension of the cable or cable, as well as to measure their linear movements.

 The inventive device can be performed with at least one roller package interacting with a tension sensor mounted on the housing, which is a force measuring element of the signal processing and registration system.

 It is possible to provide the claimed device with another sensor, at least one that is kinematically connected to one of the support rollers and serves to measure the linear movements of the cable or cable passed through the device, counting the number of revolutions of the roller.

 Reducing the metal consumption of the device is also achieved by the shape of the body in the form of curved forming surfaces on the periphery of the circle with large cut-out segments of remote areas and, therefore, metal, between which the working movement mechanism is placed in the form of a clip of support rollers.

 High strength requirements are achieved in the usual way - by fastening threaded bolt elements of various sizes depending on specific tasks, load capacity and reliability requirements, as well as by using materials that provide high strength for a long period of operation in any climatic conditions. This is achieved with the help of modern anti-corrosion and hard-to-abrade coatings on steel and other high-strength metals and alloys.

 The advantage of the claimed design is ease of implementation with high technology and their high repeatability, which ensures compliance with the requirements of the standard. This allows directly in the field to replace the failed part, which is impossible when working with a guide device, which is widely used at present and in a number of regions, is the only known one that solves this problem with one support roller.

Claims (4)

 1. A guide device for a geophysical cable or cable, including a supporting element, side stops, a vertical cable stop, a suspension holder assembly, a roller type support with grooves on the outer surface of the rollers and a stream, characterized in that the support is made in the form of a series of roller packages, each of which is an axis-bearing-roller, placed along the direction of movement of the cable or cable along a curved trajectory of the "rise-descent" type, and the brook is made in the form of a groove formed by the cheeks of the side stops and the supporting surfaces the rests of roller packages, and the bearing element serves simultaneously as side stops, the shape of which is the upper part of the periphery of the semicircle, along the length of which, along their central part, mounting holes are made for roller packages.  2. A guide device for a geophysical cable or cable according to claim 1, characterized in that it has at least one sensor for tensioning the cable or cable.  3. A guide device for a geophysical cable or cable according to claim 2, characterized in that the tension sensor is connected to at least one roller package with the possibility of elastic interaction with it.  4. The guide device for the geophysical cable or cable according to claim 1, characterized in that at least one linear sensor for moving the cable or cable is inserted into it, which is connected to one of the roller packages.

Images