CN201747362U - Detection device for mechanical tubing coupling - Google Patents

Abstract

The utility model provides a detection device for a mechanical tubing coupling, which comprises a body and detection mechanisms, wherein two groups of the detection mechanisms are arranged at the upper part and the lower part in the body, and each detection mechanism consists of three detection parts which are uniformly distributed along the circumferential direction of the body; and each detection part comprises a detection rolling wheel, a throttling shaft, jacking rods, a cylinder body and a reversing valve, wherein the detection rolling wheel is arranged at the inner end of the throttling shaft, the outer end of the throttling shaft is arranged in the cylinder body, a return spring of the throttling shaft is arranged between the outer end of the throttling shaft and the bottom of the cylinder body, a throttling hole is arranged at the center of the throttling shaft along the axial direction, the inner ends of the jacking rods are placed in the cylinder body, the outer ends of the jacking rods are connected with the reversing valve, an inner limiting boss and an outer limiting boss are arranged on the jacking rods arranged on two sides of the bottom of the cylinder body, and a return spring of the jacking rods is arranged between the inner limiting boss and the bottom of the cylinder body. The detection device is reasonable in structure, convenient in operation and accurate in detection results, and can realize automatic control of a blowout preventer in a well head device and improve the working efficiency of operation under pressure.

Description

Mechanical type tubing collar detection device

Technical field

The utility model relates to a kind of control device that is used for oil and gas wells in oil fields, particularly a kind of mechanical type tubing collar detection device that is applicable to Operating Pressure.

Background technology

Operating Pressure is meant the hydraulic oil well in not kill-job, not under the open flow situation, to oil pipe rise, under a kind of special operation mode.Adopt Operating Pressure, both can protect the expansion oil-gas Layer and avoid polluting, improving recovery ratio, can avoid the pollution of open flow again, meet the HSE requirement ground.The main device of Operating Pressure is annular preventer or ram preventer, and it deforms under the control of hydraulic coupling, thereby holds the oil pipe in the well tightly, realizes the sealing to well head.Because the box cupling diameter of oil pipe greater than caliber, during by force by preventer, can cause friction to tear to annular rubber core, makes the shortening in application life of glue core, increases cost of production, reduces operating efficiency.The effect of tubing collar detection device is, when tubing coupling during near preventer, sends and reports to the police or control signal, make preventer fast, open, to guarantee passing through smoothly of tubing coupling in good time.

The tubing collar detection device that uses is generally induction at present, owing to be subjected to the influence of factors such as the greasy dirt of the instantaneous unstability of outside power frequency supply and working site and metal material, thereby detecting error is bigger, reliability is lower, and this type of induction tubing collar detection device in use also need be paid close attention to explosion-proof safety problem.Chinese patent 200710010043.8 discloses a kind of mechanical pipe pole connecting hoop detecting apparatus for working with pressure, forms by housing, exploring block with near displacement transducer; One group of exploring block that is constituted by exploring block housing, detection wheel, roller axle, spacing ring, detection plunger, compression spring, regulating piston, plug respectively is set symmetrically in the left and right sides of housing, housing is provided with outward and is attached thereto that the displacement that connects transmits that bar, displacement transmit guide pad, sensor guide holder, sensor stand and near displacement transducer, the Sensor section outside is provided with protective cover, exploring block is connected and fixed by bolt, nut and housing and is one, and the sensor guide holder is connected with the exploring block housing with screw with support; The exploring block shell stops, survey on plunger, the regulating piston and be respectively equipped with sealing ring.During work, moving up and down of tubing coupling, drive detection wheel and drive detection plunger edge to moving, transmit guide pad and export detectable signal by displacement transmission bar, displacement near displacement transducer, realize sound and light alarm, thus for preventer under pressure balance control, open sealing pair by tubing coupling smoothly by a control signal is provided.Though this patent name is called mechanical type, it finally remains, and a control signal realizes by sending near displacement transducer, and bilateral symmetry formula structure, when departing from the well head center for oil pipe, still has detecting error.

The utility model content

For overcoming the deficiencies in the prior art part, the utility model provide a kind of rational in infrastructure, result of detection is accurate, the mechanical type tubing collar detection device of easy to operate, high efficiency.

The technical scheme that its technical problem that solves the utility model adopts is: comprise body and detection agency;

Described body all has the cylindrical shape of flange for two ends up and down, is provided with two groups of detection agencies set up and down in body;

Described detection agency is made of three exploring blocks, three exploring blocks circumferentially evenly distributing along body;

Described exploring block comprises detection wheel, throttling axle, throttling axle back-moving spring, push rod, push rod back-moving spring, cylinder body and reversal valve; Detection wheel is loaded on horizontally disposed throttling axle the inner versatilely, and the outer end of throttling axle places in the cylinder body, and is provided with throttling axle back-moving spring between the bottom of the outer end of throttling axle and cylinder body, and the center of throttling axle axially offers throttle orifice along it; The inner of push rod places in the cylinder body, and the outer end of push rod is connected with reversal valve; And on the push rod of cylinder base both sides, being provided with positive stop lug boss and outside positive stop lug boss, between interior positive stop lug boss and cylinder base, be provided with the push rod back-moving spring.

Above-mentioned throttling axle back-moving spring is nested with outside the push rod back-moving spring.

During work, at first the utility model is installed between the upper and lower annular preventer of well device, in the well liquid of band pressure by the throttle orifice on the throttling axle in cylinder body, throttling axle back-moving spring and throttling axle, push rod back-moving spring and push rod in the cylinder body all are in equilibrium state, and detection wheel contacts with the oil pipe external surface; Then that the reversal valve in the upper and lower two groups detection agency is in parallel by group separately, more respectively with the hydraulic system of upper and lower annular preventer communications and liaison mutually.Move upward in body with oil pipe and to be example, when tubing coupling touches the detection wheel of next group detection agency, detection wheel overcomes the elastic force of throttling axle back-moving spring and drives the axial movement outside of throttling, cause the volume of throttling axle in cylinder body to become big, while is owing to the throttling action of throttle orifice in the throttling axle, pressure in the cylinder body can temporarily raise, break the balance of push rod back-moving spring and push rod, push rod outwards motion acts on reversal valve, reversal valve then drives down annular preventer and opens, and tubing coupling is passed through smoothly; Behind tubing coupling detection wheel by next group detection agency, reversal valve then descends annular preventer to reset and cuts out under the effect of push rod back-moving spring and throttling axle back-moving spring and reset; When the last Xingqi tubing coupling of oil pipe continuation touched the detection wheel of last one group of detection agency, then operating principle was with above-mentioned.Because the utility model has adopted two groups of detection agencies, include three exploring blocks in every group of detection agency, three detection wheels be evenly distributed in body week upwards, even therefore oil pipe departs from the center in well head, also can guarantee the result's that surveys accuracy.

The beneficial effects of the utility model are: it is rational in infrastructure, and is easy to operate, and result of detection is accurate, has realized the automatic control of preventer in the wellhead assembly, has improved the operating efficiency of Operating Pressure greatly.

Description of drawings

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

Fig. 2 is the A-A sectional view of Fig. 1

Fig. 3 is the B-B sectional view of Fig. 2.

Among the figure: 1 is body, and 1-1 is a upper flange, and 1-2 is that lower flange, 2 is exploring block, and 2-1 is a detection wheel, 2-2 is a wheel shaft, and 2-3 is the throttling axle, and 2-31 is a throttle orifice, 2-32 is interior limited step, and 2-33 is outer limited step, and 2-4 is a mounting flange, 2-5 is a cylinder body, and 2-6 is a throttling axle back-moving spring, and 2-7 is a push rod, 2-71 is interior positive stop lug boss, and 2-72 is outer positive stop lug boss, and 2-8 is the push rod back-moving spring, 2-9 is a reversal valve, and 3 is oil pipe, and 3-1 is tubing coupling.

The specific embodiment

The utility model is described in further detail below in conjunction with accompanying drawing.

The mechanical type tubing collar detection device that the utility model comprises comprises body 1 and detection agency;

Two ends were respectively equipped with the cylindrical shape of upper flange 1-1 about described body 1 was, and were provided with two groups of detection agencies set up and down in body 1;

Described detection agency is made of three exploring blocks, three exploring blocks circumferentially evenly distributing along body;

Described exploring block comprises detection wheel 2-1, throttling axle 2-3, throttling axle back-moving spring 2-6, push rod 2-7, push rod back-moving spring 2-8, cylinder body 2-5 and reversal valve 2-9; Detection wheel 2-1 is loaded on the inner of horizontally disposed throttling axle 2-3 versatilely by wheel shaft 2-2, the outer end of throttling axle 2-3 is passed the mounting flange 2-4 that is fixed in body 1 outside and is placed in the cylinder body 2-5, on the throttling axle 2-3 of both sides, cylinder body 2-5 top, being respectively equipped with limited step 2-32 and outside limited step 2-33; Described cylinder body 2-5 is fixed on the mounting flange 2-4, and is provided with throttling axle back-moving spring 2-6 between the bottom of the outer end of throttling axle 2-3 and cylinder body 2-5, and the center of throttling axle 2-3 axially offers throttle orifice 2-31 along it; The inner of push rod 2-7 places in the cylinder body 2-5, and the outer end of push rod 2-5 is connected with reversal valve 2-9; And positive stop lug boss 2-71 and outer positive stop lug boss 2-72 in being provided with on the push rod 2-7 of cylinder body 2-5 two bottom sides are provided with push rod back-moving spring 2-8 between bottom positive stop lug boss 2-72 and the cylinder body 2-5 in this.Above-mentioned throttling axle back-moving spring 2-6 is nested with outside push rod back-moving spring 2-8.

During work, at first be installed on the utility model between the upper and lower annular preventer of well device by its upper flange 1-2, lower flange 1-2, in the well liquid of band pressure by the throttle orifice 2-31 on the throttling axle 2-3 in cylinder body 2-5, throttling axle back-moving spring 2-6 in the cylinder body 2-5 and throttling axle 2-3, push rod back-moving spring 2-8 and push rod 2-7 are in equilibrium state, and detection wheel 2-1 contacts with oil pipe 3 external surfaces; Then that the reversal valve 2-9 in the upper and lower two groups detection agency is in parallel by group, more respectively with the hydraulic system of upper and lower annular preventer communications and liaison mutually.Move upward in body with oil pipe 3 and to be example, when tubing coupling 3-1 touches the detection wheel 2-1 of next group detection agency, detection wheel 2-1 overcomes the elastic force of throttling axle back-moving spring 2-6 and drives throttling axle 2-3 and moves laterally, cause the volume of throttling axle 2-3 in cylinder body 2-5 to become big, simultaneously because the throttling action of the throttle orifice 2-31 on the throttling axle 2-3, pressure in the cylinder body 2-5 can temporarily raise, break the balance of push rod back-moving spring 2-8 and push rod 2-7, push rod 2-7 outwards motion acts on reversal valve 2-9, reversal valve 2-9 then drives down annular preventer and opens, and tubing coupling 3-1 is passed through smoothly; Behind tubing coupling 3-1 detection wheel 2-1 by next group detection agency, reversal valve 2-9 then descends annular preventer to reset and closes under the effect of push rod back-moving spring 2-8 and throttling axle back-moving spring 2-6 and reset; Up when oil pipe 3 continuation, when tubing coupling 3-1 touches the detection wheel 2-1 of one group of detection agency, then be the action that one group of detection agency repeats next group detection agency.In like manner, when oil pipe 3 is descending in body 1, then goes up the action earlier of one group of detection agency, and move behind next group detection agency.

Because the utility model has adopted two groups of detection agencies, include three exploring blocks in every group of detection agency, three detection wheel 2-21 be evenly distributed in body 1 week upwards, even therefore oil pipe 1 departs from the center in well head, also can guarantee the result's that surveys accuracy.

Claims (2)

1. mechanical type tubing collar detection device comprises body and detection agency; It is characterized in that: described body all has the cylindrical shape of flange for two ends up and down, is provided with two groups of detection agencies set up and down in body;

Described detection agency is made of three exploring blocks, three exploring blocks circumferentially evenly distributing along body;

Described exploring block comprises detection wheel, throttling axle, throttling axle back-moving spring, push rod, push rod back-moving spring, cylinder body and reversal valve; Detection wheel is loaded on horizontally disposed throttling axle the inner versatilely, and the outer end of throttling axle places in the cylinder body, and is provided with throttling axle back-moving spring between the bottom of the outer end of throttling axle and cylinder body, and the center of throttling axle axially offers throttle orifice along it; The inner of push rod places in the cylinder body, and the outer end of push rod is connected with reversal valve; And on the push rod of cylinder base both sides, being provided with positive stop lug boss and outside positive stop lug boss, between interior positive stop lug boss and cylinder base, be provided with the push rod back-moving spring.

2. mechanical type tubing collar detection device according to claim 1 is characterized in that: above-mentioned throttling axle back-moving spring is nested with outside the push rod back-moving spring.

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