SU989646A1

SU989646A1 - Installation for winding power supply cable of well mechanism working device

Info

Publication number: SU989646A1
Application number: SU813300025A
Authority: SU
Inventors: Вячеслав Михайлович Александров; Альберт Александрович Каторгин
Priority date: 1981-03-27
Filing date: 1981-03-27
Publication date: 1983-01-15

Description

Изобретение относитс к оборудованию , обеспечивающему подачу и извлечение токоподвод щего кабел во врем спуско-подъемных операций, и может быть использовано, например, при работе с погружными забойными механизмами .The invention relates to equipment that provides the supply and removal of a lead-in cable during tripping, and can be used, for example, when working with submersible bottomhole mechanisms.

Известны устройства дл нгилотки кабел , содержащие размещенные на одной оси кабельный барабан и барабан дл т гового троса, в которых приводом вл етс груз, св занный через полиспастную систему и барабан дл т гового троса с рабочим органом. При спуске барабаны привод тс во вращение весом рабочего органа (разматывание кабел ), а при подъеме - грузом (наматывание кабел ) 1.Ngilot cable assemblies are known, comprising a cable drum and a cable pull drum arranged on a single axis, in which the drive is a load connected through a polyspast system and a cable pull rope to the tool. During the descent, the drums are rotated by the weight of the working body (cable unwinding), and when lifting, by a load (cable winding) 1.

Недостаток этих устройств состоит в том, что они делают практически невозможным проведение спуско-подъ- ; емных операций на достаточно большой глубине, так как в этом случ,ае ход полиспастной системы, вес груза должны быть весьма значительны, что в большинстве случаев невозможно по услови м эксплуатации крана, вследствие того, что использование груза приводит к смещению центра т жести крана, а перемещающийс груз вл етс источником дополнительной- опасности при эксплуатации устройства.The disadvantage of these devices is that they make it almost impossible to conduct a trip; operations at a sufficiently large depth, since in this case, the stroke of the polyspast system, the weight of the load must be very significant, which in most cases is impossible under the conditions of the crane operation, due to the fact that the use of the load leads to a shift of the center of gravity of the crane, and the moving load is a source of additional danger in the operation of the device.

Кроме того, необходимость разгрузки кабел при введении приводного механизма (подъем груза полиспаста при спуске рабочего органа) приводит к необходимости наличи т гового троса в скважине, что вызывает дополнительные трудности при эксплуатации.In addition, the need for unloading the cable when the drive mechanism is inserted (lifting the weight of the chain hoist during the descent of the working body) makes it necessary to have a pull wire in the well, which causes additional difficulties in operation.

10ten

Известны также устройства дл намотки кабел , в которых в качестве привода кабельного барабана используютс пружины сжати (раст жени )2j.Cable winding devices are also known in which compression (tension) springs 2j are used as cable drum drives.

Недостатками таких конструкций The disadvantages of such structures

15 вл ютс ограниченность хода пружины и наличие дополнительной разгрузки кабел .15 are limited spring travel and the presence of additional cable unloading.

Известно устройство дл намотки кабел питани скважинного забойного A device for winding the power cable downhole downhole

20 механизма, вход щего в комплект виброгрейфера модели УВ-30, включающее кабельный и тросовый барабаны, жестко закрепленные на общей оси, и их привод в виде системы спиральных пру25 жин (рессор), расположенных в корпусе кабельного барабана, при этом свободный конец т гового троса закреплен на забойном механизме | 3J.The 20 mechanism included in the kit of the vibration grinder of the model UV-30 includes cable and cable drums rigidly fixed on a common axis, and their drive is in the form of a system of spiral springs (springs) located in the housing of the cable drum, while the free end of the cable cable fixed on the bottomhole mechanism | 3J.

Claims

The design of the device is lighter and more productive than designs using a load as a drive; it has a slightly larger spring stroke than designs using a compression spring as a drive (stretching) The disadvantages of the known devices are the limited depth of the co-lift operations and the necessary availability traction cable in the well for the purpose of additional unloading of the power cable during cocking of the cable drum drive mechanism. Increasing the range of possible movements of the tool and eliminating the need for additional cable unloading. The goal is achieved by the device for winding the power cable of the working body of the borehole bottomhole mechanism suspended on a cargo cable containing a cable drum mounted on a common axis and a drum for hauling cable .and their drive, cable drum drive and cable haul drum are made in the form of an additional drum mounted on the frame for cable haul rope and block, installed on one axle with one-way clutch, while on the additional drum the end of the rope is fixed, and the unit is coupled with the cargo cord, which is pressed against it by means of two pressure rollers. Pz FIG. 1 shows a diagram of the proposed device; in fig. 2, node I in FIG. 1, in FIG. 3 is a view A of FIG.

2. In the lower part of the boom 1 of the crane are mounted on one axis cable drum 2 with cable 3 and drum 4 for haul cable 5. To the top of boom 1 a frame (not shown) is suspended, in which the blocks are fixed on one axis and the additional drum 7, on the additional drum 7, is attached the end of the haul cable 5. The additional drum 7 is coupled to the block 6 with one-way clutch, for example, using the ratchet mechanism 8, the Block 6 is conjugated by means of two pressure rollers 9 fixed on frame, with freight cable 10, which is connected with the crane winch (not shown for the lifting operation of the working body. The device works as follows. When the bottomhole mechanism is lowered by means of the crane winch, cable 3,. unwinds, rotates the cable drum 2 and strengthened with it the common axis of the drum 4 for the pull cable 5. The rotation of the drum 4 causes the pull cable 5 to be rewound onto it from the additional drum 7, which in this case rotates freely with respect to the block 6 due to the ratchet mechanism 8 in the direction corresponding to m unwinding the traction (rope 5, and thus, cable 3 does not experience additional load during the descent of the working body. When lifting the working body 11, the cargo cable 9 rotates the block 6, which, being pressed against it by the clamping rollers 10, together with it, thanks to the ratchet mechanism 8 rotates the additional drum 7. Rotation of the additional drum 7 in the direction corresponding to the Winding of the pull cable 5 causes the rotation of the drum 4 for the traction cable 5 and the cable drum 2 in. the direction corresponding to the winding of the cable 3, thereby performing synchronous with the working body the removal of the power cable

3. In the proposed device, the expansion of the range of possible movements of the working body is provided. The fact that the rotation of the cable drum is transmitted by a traction cable at any interval of the working body lifting does not impose any restrictions on the depth of the latter, as was the case in known devices where the tackle or spring stroke limited the depth of the possible movement of the working body. When operating the proposed device, additional unloading is not required. Since the cable is not fixed on the working device, as in the known devices, but on the additional drum, rewinding of the additional cable on the drum for the cable is performed without any efforts due to the unilateral action mechanism (for example, ). The invention The device for winding the power cable of the working body of the downhole mechanism, suspended on the cargo cable, contains a cable drum and a drum for the cable to be mounted on a common axis and their drive, in order to increase the efficiency of the design by expanding the range of possible displacements of the working orga, on and eliminating the need for additional cable unloading, drive