CN2276988Y

CN2276988Y - On-line detector for length of oil pipe

Info

Publication number: CN2276988Y
Application number: CN96240807U
Authority: CN
Inventors: 石玉华; 曲礼洲
Original assignee: OIL EXTRACTION TOOLS PLANT MUDANJIANG CITY
Current assignee: OIL EXTRACTION TOOLS PLANT MUDANJIANG CITY
Priority date: 1996-09-16
Filing date: 1996-09-16
Publication date: 1998-03-25
Anticipated expiration: 2006-09-16

Abstract

The utility model discloses an on-line detector for the length of an oil pipe, which is composed of a wellhead device, cables and a metering device. The utility model is characterized in that a number sensor and a photoelectric counter are arranged in the wellhead device, an oil scraper and a positioning device are fixed on the upper part of the wellhead device, and a magnet wheel mechanism is arranged below the positioning device; an optical scale disk, a magnet wheel and a magnet are coaxially fixed on the shaft of the magnet wheel mechanism, the outer end of the optical scale disk is arranged in the photoelectric counter, and a support frame is fixed at the outer side of the magnet wheel. The utility model has novel structural design, and can measure the length of oil pipes on line and record the number of the oil pipes during the pipe sinking work in oilfields so the precision is high so as to ensure the quality of construction and the favorable completion of construction design.

Description

The tubing length on-line detector

The utility model relates to a kind of detecting instrument, particularly a kind of tubing length on-line detector.

In the field operation of oil field, always there is an important problems, that is exactly that oil pipe is arrived the predetermined degree of depth down, and this just needs to measure the length of oil pipe.At present the method that adopts is to carry out manual measurement with meter ruler, carries out under the harsh climate environment in the open air often owing to measure, and mistake takes place unavoidably, in addition amount wrong radical.In order to address this problem, in construction, have to send two groups of personnel to measure at twice, if the coming to the same thing of twice measurement, just this would allow construction.Precision is difficult to guarantee in measuring process, so that influenced construction quality, and also working environment is arduous, and great amount of manpower has been wasted in workman's duplication of labour.

The purpose of this utility model just is to provide a kind of mechanical, tubing length on-line detector that can carry out accurate long range measurements.

Technical solution of the present utility model is: be made up of wellhead assembly and metering device, adopt cable that both are coupled together, metering device is made up of power supply and single-chip microcomputer etc., be provided with the radical sensor in the wellhead assembly, be fixed with protruding key in the lower end of radical sensor and be provided with photoelectric counter, top at wellhead assembly is fixed with oil wiper, is fixed with locator below oil wiper, is provided with magnet-wheel mechanism below locator; Coaxial photoetching scale, magnet-wheel and the magnet of being fixed with on the axle of magnet-wheel mechanism, the two ends of photoetching scale place in the photoelectric counter, and the outside of magnet-wheel is fixed with support.

The utility model structure design novelty, be skillfully constructed, can be when the lowering-in operation of oil field on-line measurement tubing length and write down the radical of pipe, has higher certainty of measurement, can guarantee finishing smoothly of construction quality and working design, simultaneously alleviate working strength of workers greatly, avoided workman's the duplication of labour, saved manpower; The utility model has cable weak point, lightweight characteristics owing to used portable apparatus.

Below in conjunction with accompanying drawing and most preferred embodiment content of the present utility model is further elaborated.

Fig. 1 is a structural representation of the present utility model;

Fig. 2 is the structural representation of wellhead assembly in the utility model;

Fig. 3 is the structural representation of magnet-wheel mechanism.

With reference to accompanying drawing, the utility model is made up of wellhead assembly 1 and metering device 3, adopts cable 2 to couple together between the two, and metering device 3 is made up of several servo control mechanisms such as power supply, single-chip microcomputer and printers.In wellhead assembly 1, be provided with radical sensor 4, the lower end of radical sensor 4 is fixed with protruding key 41, and be provided with photoelectric counter 8, be used to write down the oil pipe radical, protruding key 41 can insert in the photoelectric counter 8, be fixed with oil wiper 7 on the top of wellhead assembly 1, be used to remove the greasy dirt of oil pipe external surface; Below oil wiper 7, be fixed with locator 6, be used for alleviating rocking of oil pipe; Below locator 6, be provided with magnet-wheel mechanism 5.On the axle 51 of magnet-wheel mechanism 5, coaxial photoetching scale 52 and magnet-wheel 54, the magnet 55 of being fixed with, magnet-wheel 54 can be done nonslipping rolling along the oil pipe external surface, photoetching scale 52 is in the form of annular discs, on periphery, be processed with the hole or the groove of light-permeable, its outer end places in the photoelectric counter 53 that is oppositely arranged, but the angular displacement of photoelectric counter 53 recording light dials 52, and generation pipe range pulse signal is passed to metering device 3; The outside of magnet-wheel 54 is fixed with support 56, and it can guarantee that magnet-wheel contacts with oil pipe and keeps the translation of magnet-wheel mechanism.Outer end at locator 6, oil wiper 7 and support 56 is provided with spring, contacts with oil pipe so that guarantee them.

When using this instrument, wellhead assembly can place on the wellhead flange 9, and oil pipe 10 passes and G.I.H in the middle of wellhead assembly.The utility model operating principle is as follows: magnet-wheel is done fricton-tight rolling along oil pipe in the oil pipe dropping process, the scale of photoetching simultaneously also rotates thereupon, on the dish owing to have aperture or groove, when turning over photoelectric counter, can make light by and make it produce the pipe range pulse signal, pass to metering device; Down the time, the slips on the oil pipe is pressed on the radical sensor soon for oil pipe, the protruding key of lower end is moved down in the insertion photoelectric counter block light path, makes photoelectricity radical signal of its generation, and also passes to metering device.Single-chip microcomputer in the metering device is handled, is added up pipe range signal and radical signal, finally can the length of every oil pipe and the radical of cumulative length and pipe be printed by servo control mechanism such as printer, thus the order of accuarcy of detection construction quality and working design.

Claims

1, a kind of tubing length on-line detector, by wellhead assembly (1), cable (2) and metering device (3) are formed, cable (2) couples together wellhead assembly (1) and metering device (3), metering device (3) is made up of power supply and single-chip microcomputer etc., it is characterized in that being provided with in the wellhead assembly (1) radical sensor (4), be fixed with protruding key (41) in the lower end of radical sensor (4) and be provided with photoelectric counter (8), be fixed with oil wiper (7) on the top of wellhead assembly (1), be fixed with locator (6) in the below of oil wiper (7), be provided with magnet-wheel mechanism (5) in the below of locator (6); On the axle (51) of magnet-wheel mechanism (5), coaxial photoetching scale (52) and magnet-wheel (54), the magnet (55) of being fixed with, the outer end of photoetching scale (52) places in the photoelectric counter (53), and the outside of magnet-wheel (54) is fixed with support (56).