Coiled tubing clamp device

Abstract

The utility model relates to the technical field of oil pipe hoisting, in particular to a coiled tubing pipe clamping device, a first clamping body and a second clamping body of the coiled tubing pipe clamping device are respectively provided with a lug seat and are connected through a connecting bolt, the connecting bolt comprises a screw rod section and a stop lever section which are vertically arranged, an opening groove is formed in the lug seat of the first clamping body, and the stop lever section is connected with the screw rod section. A bolt mounting hole is formed in a lug seat of the second clamping body, and the width of the open slot is smaller than the length of the stop lever section and larger than the width of the stop lever section; the stop lever section is provided with a stop position and an avoiding position within the rotating range, wherein the stop position is used for being matched with the lug of the first clamping body in a stop mode so that the connecting bolt can be tightened, and the avoiding position corresponds to the open groove so that the lug of the first clamping body can avoid the stop lever section through the open groove. When the pipe clamp is opened, the connecting bolt is loosened to be in a rotatable state so that the connecting bolt can rotate to the avoiding position, the requirement for opening the pipe clamp can be met, a large distance does not need to be formed between the stop lever section and the lug, and screwing operation is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of oil pipe hoisting, in particular to a continuous oil pipe clamping device. Background Art

[0002] Before operation, the detachable continuous tubing operation vehicle needs to pull the continuous tubing into the injection head. During this process, a crane needs to be used to adjust the pulling position. In order to prevent the continuous tubing from elastically shrinking back to the drum, a pipe clamp device is provided on the continuous tubing. For example, a continuous tubing pipe clamp device is disclosed in the Chinese utility model patent with authorization publication number CN205277334U and authorization publication date of June 1, 2016. Its left cone sleeve base and right cone sleeve base form left and right clamping bodies and are used to tightly hold the oil pipe. One end of the left cone sleeve base and the right cone sleeve base are hingedly connected, and the other end is fixed by a swing bolt in conjunction with a stop washer and a nut. The left cone sleeve base and the right cone sleeve base are respectively provided with an ear seat, and the left ear seat is provided with an open slot. One end of the swing bolt is hingedly connected to the open slot of the left ear seat, and the other end passes through the open slot of the right ear seat and is connected to the nut. By loosening the nut, the swing bolt can be rotated, thereby opening the left cone sleeve base and the right cone sleeve base. However, in order to prevent the stop washer from interfering with the right ear seat when the left cone sleeve base is opened relative to the right cone sleeve base, this connection structure using the swing bolt in conjunction with the stop washer and the nut requires the nut to be loosened to a position farther away from the right ear seat so that the stop washer can retreat to a sufficiently far distance from the right ear seat, thereby allowing the stop washer to completely clear the right ear seat when the swing bolt rotates relative to the right ear seat. In this way, when loosening the nut, more turns are required, which is time-consuming and inconvenient to operate. Utility Model Content

[0003] The utility model aims to provide a coiled tubing clamp device to solve the problem that the current coiled tubing clamp device requires a large number of turns of nuts to open or clamp the tubing, which causes inconvenience in operation.

[0004] The technical solution of the coiled tubing clamp device of the utility model is:

[0005] A coiled tubing clamp device includes a first clamping body and a second clamping body for clamping the coiled tubing. One end of the first clamping body and the second clamping body is hinged, and the other ends are respectively provided with ear seats and are fixedly connected by connecting bolts. The connecting bolt includes a screw rod section and a stop rod section with perpendicular extension directions. An opening groove is provided on the ear seat of the first clamping body, and a bolt mounting hole is provided on the ear seat of the second clamping body. The opening groove and the bolt mounting hole are used to install the screw rod section of the connecting bolt. The width of the opening groove is smaller than the length of the stop rod section and larger than the width of the stop rod section. The stop rod section has a stop position within its rotation range for engaging with the ear seat of the first clamping body to tighten the connecting bolt, and an avoidance position corresponding to the opening groove for the ear seat of the first clamping body to avoid the stop rod section through the opening groove when the first clamping body rotates relative to the second clamping body.

[0006] Beneficial effects: The present utility model is improved based on the coiled tubing clamp device in the prior art. When the connecting bolt is rotated so that the stop rod section intersects with the opening groove, the stop rod section can be in stop cooperation with the ear seat of the first clamping body. By screwing the connecting nut and cooperating with the stop rod section, the ear seats of the two clamping bodies are fixedly connected, so that the two clamping bodies clamp the coiled tubing; when the connecting nut is loosened and the connecting bolt is rotated so that the width direction of the stop rod section is consistent with the width direction of the opening groove, the ear seat of the first clamping body can avoid the stop rod section through the opening groove, so that the first clamping body can rotate relative to the second clamping body, and the clamp device is opened to loosen the coiled tubing; in this way, when the clamp needs to be opened, only the connecting bolt needs to be loosened so that the connecting bolt can be rotated to the avoidance position where the stop rod section corresponds to the opening groove, which can meet the rotation of the first clamping body relative to the second clamping body to open the clamp, without the need to form a large distance between the stop rod section and the corresponding ear seat, which is beneficial to reducing the number of screwing turns and facilitating the operation.

[0007] Further, a connecting nut is threadedly connected to the part of the screw rod section that passes through the bolt mounting hole and is far from the opening groove.

[0008] Beneficial effects: The connecting nut is used in cooperation with the connecting bolt to fix the two clamping bodies together, which is convenient for loosening the connecting bolt by screwing the connecting nut and is convenient for operation.

[0009] Further, a stop rotation groove is provided at the opening on the side of the opening groove facing away from the bolt mounting hole. The stop rotation groove intersects with the opening groove, and the stop rod section is inserted into the stop rotation groove to stop the rotation of the stop rod section.

[0010] Beneficial effects: The stop rotation groove and the stop rod section form a stop rotation cooperation, which is convenient for the screwing operation of the connecting nut.

[0011] Further, a limiting sunk groove is provided on the side surface of the ear seat of the first clamping body facing away from the bolt mounting hole. The stop rotation groove and the opening groove are both opened at the bottom of the limiting sunk groove, and an activity space for the stop rod section to rotate is provided in the limiting sunk groove.

[0012] Beneficial effects: The limiting sinking groove can be used to limit the rotation range of the retaining rod section, which is beneficial for rotating the retaining rod section of the connecting bolt to the corresponding position.

[0013] Furthermore, the bolt mounting hole is a tapered hole.

[0014] Beneficial effects: The connecting bolt can be relatively deflected to avoid the ear seat of the first clamping body.

[0015] Furthermore, the aperture of the tapered hole gradually increases in the direction towards the opening groove.

[0016] Beneficial effects: The larger aperture of the tapered hole faces the opening groove, which is convenient for guiding the connecting bolt to be inserted into the bolt mounting hole through the opening groove.

[0017] Furthermore, a lifting ring is provided on the second clamping body.

[0018] Beneficial effects: By setting the lifting ring on the second clamping body, after loosening the connecting nut, the first clamping body can be opened under the action of its own weight.

[0019] Furthermore, the lifting ring is welded to the second clamping body.

[0020] Beneficial effects: Using a fixed lifting ring can prevent the pipe clamp from shaking and squeezing the hand when the hand grabs the lifting ring to carry the pipe clamp device.

[0021] Furthermore, clamping grooves are respectively provided on the first clamping body and the second clamping body to form an oil pipe clamping hole, and at least one end of the first clamping body and the second clamping body along the axial extension direction of the oil pipe clamping hole is provided with a retaining edge.

[0022] Beneficial effects: The retaining edge can be used to form a stable blocking fit with the clamping point set at the drum, avoiding the retraction of the coiled tubing.

[0023] Furthermore, slip jaws are respectively provided on the opposite sides of the first clamping body and the second clamping body.

[0024] Beneficial effects: The slip jaws are convenient for tightly holding the coiled tubing, and the use is reliable. Brief Description of the Drawings

[0025] Figure 1 It is the front view of Embodiment 1 of the coiled tubing pipe clamp device of the present utility model;

[0026] Figure 2 It is Figure 1 The side view (partially sectioned at the connecting bolt) of the pipe clamp device in

[0027] Figure 3 It is Figure 1 The first-direction sectional view of the pipe clamp device in

[0028] Figure 4 The top view (partial section of the lifting ring) of the pipe clamp device in Figure 1 ;

[0029] Figure 5 The second-direction sectional view of the pipe clamp device in Figure 1 ;

[0030] Figure 6 The structural schematic diagram of one side of the first ear seat facing away from the second ear seat in Figure 2 ;

[0031] In the figure: 1. First clamping body; 11. First retaining edge; 12. First jaw; 13. First screw; 14. First ear seat; 2. Second clamping body; 21. Second retaining edge; 22. Second jaw; 23. Second screw; 24. Opening slot; 25. Anti-rotation slot; 26. Limit sunk slot; 27. Second ear seat; 3. Lifting ring; 4. Connecting bolt; 41. Stop rod section; 42. Screw rod section; 5. Connecting nut; 6. Rotating shaft; 7. Stop pin. Specific embodiments

[0032] Embodiment 1 of the coiled tubing pipe clamp device of the present utility model:

[0033] In this embodiment, the two clamping bodies are fixedly connected by a T-shaped bolt in cooperation with an opening slot and a bolt mounting hole. When the connecting bolt is rotated so that the stop rod section intersects with the opening slot, the stop rod section can be in stop cooperation with the ear seat of the first clamping body. By screwing the connecting nut in cooperation with the stop rod section, the ear seats of the two clamping bodies are fixedly connected, so that the two clamping bodies hold the coiled tubing tightly; when the connecting nut is loosened and the connecting bolt is rotated so that the width direction of the stop rod section is consistent with the slot width direction of the opening slot, the ear seat of the first clamping body can avoid the stop rod section through the opening slot, so that the first clamping body can rotate relative to the second clamping body, and the pipe clamp device can be opened to loosen the coiled tubing; thus, when it is necessary to open the pipe clamp, only the connecting bolt needs to be loosened so that the connecting bolt can be rotated to the avoidance position corresponding to the opening slot of the stop rod section, which can meet the rotation of the first clamping body relative to the second clamping body to open the pipe clamp, and it is not necessary to form a large distance between the stop rod section and the corresponding ear seat, which is beneficial to reducing the number of screwing turns and facilitating the screwing operation.

[0034] As Figure 1 shown, the coiled tubing pipe clamp device includes a first clamping body 1 and a second clamping body 2 arranged up and down. The first clamping body 1 and the second clamping body 2 are used to hold the coiled tubing tightly. One end of the first clamping body 1 and the second clamping body 2 is hinged, and the other end is fixedly connected by a connecting bolt 4 and a connecting nut 5. By loosening the bolt nut, the first clamping body 1 can be opened relative to the second clamping body 2 to install the pipe clamp device onto the coiled tubing or remove it from the connecting tubing.

[0035] AsFigure 1 、 Figure 2 、 Figure 3 、 Figure 4 As shown, the first clamping body 1 comprises a semi-circular main body, hinged ears on both ends of the main body, and first ear seats 14. The second clamping body 2 comprises a semi-circular main body, hinged seats on both ends of the main body, and second ear seats 27. Clamping grooves are respectively provided on the main body of the first clamping body 1 and the main body of the second clamping body 2. The two clamping grooves face each other, forming a tubing clamping hole for clamping the coiled tubing when the first clamping body 1 and the second clamping body 2 are aligned. The axis of the tubing clamping hole extends in the front-to-back direction. The walls of the clamping grooves are provided with mounting grooves. The mounting grooves on the first clamping body 1 and the second clamping body 2 respectively contain first and second slips 12 and 22. The mounting grooves limit the position of the slips, facilitating secure installation of the slips. The first and second slips 12 and 22 are both arc-shaped and protrude from the mounting grooves, so as to clamp the outer circumference of the coiled tubing when the first and second clamping bodies 1 and 2 are aligned. The first slip 12 is fixed to the main body of the first clamping body 1 by a first screw 13, and the second slip 22 is fixed to the main body of the second clamping body 2 by a second screw 23. Both the first screw 13 and the second screw 23 are countersunk screws and two are provided respectively to ensure that the slips are securely fixed.

[0036] The hinged lug of the first clamping body 1 is hinged to the hinged base of the second clamping body 2. The hinged base is provided with a hinge slot for the hinged lug to extend into. The two side walls of the hinge slot and the hinged lug are provided with through holes for the rotation shaft 6 to pass through. The rotation shaft 6 has a stopper at one end and a stop pin 7 at the other end to prevent the rotation shaft 6 from falling off. The first clamping body 1 and the second clamping body 2 are hingedly connected by the rotation shaft 6, and the hinge axis extends in the front-to-back direction.

[0037] like Figure 2 、 Figure 4 、 Figure 5 、 Figure 6 As shown, the first ear seat 14 is provided with an open slot 24, which is vertically continuous and faces the side away from the clamping slot. The open slot 24 has a slot width and a slot depth. The slot width is the dimension of the open slot 24 in the front-to-back direction, and the slot depth is the dimension of the open slot 24 in the left-to-right direction. The second ear seat 27 is provided with a bolt mounting hole corresponding to the open slot 24. The bolt mounting hole is a through-hole for the connecting bolt to pass through. The open slot 24 and the bolt mounting hole are used to pass the connecting bolt 4, which cooperates with the connecting nut 5 to securely connect the first ear seat 14 to the second ear seat 27.

[0038] The connecting bolt 4 is a T-shaped bolt, including a screw section 42 and a block rod section 41 with a vertical extension direction. The screw section 42 of the connecting bolt 4 is inserted into the opening groove 24 and the bolt mounting hole, and the screw section 42 extends upward through the bolt mounting hole for threaded connection with the connecting nut 5. The block rod section 41 is used to form a stop fit with the side of the first ear seat 14 facing away from the second ear seat 27, so that when the connecting nut 5 is screwed, the first ear seat 14 and the second ear seat 27 are fixed together through the cooperation between the connecting nut 5 and the block rod section 41.

[0039] After loosening the connecting nut 5, the connecting bolt 4 can rotate. Within its rotational range, the connecting bolt 4 has a stopping position and an escape position. The width of the opening slot 24 is smaller than the length of the barrier segment 41 but larger than the width of the barrier segment 41, and the depth of the opening slot 24 is greater than the length of the barrier segment 41. When the connecting bolt 4 is in the stopping position, the length of the barrier segment 41 is perpendicular to the depth of the opening slot 24, that is, it is aligned with the width of the opening slot 24. This allows the longer portions of the barrier segment 41 located on either side of the opening slot 24 to be caught by the edge of the lower opening of the opening slot 24. When the connecting bolt 4 is in the escape position, the length of the barrier segment 41 is aligned with the depth of the opening slot 24, that is, it is perpendicular to the width of the opening slot 24. At this point, the first lug 14 can clear the barrier segment 41 of the connecting bolt 4 through the opening slot 24, preventing interference between the first lug 14 and the barrier segment 41 when the first clamping body 1 rotates relative to the second clamping body 2 to open the pipe clamp. In this way, when loosening the connecting nut 5 , the connecting bolt can be loosened by a relatively small number of turns to a state where it can rotate, so that the opening slot 24 can avoid the blocking rod section 41 .

[0040] A limiting recess 26 is provided on the lower side of the first ear seat 14 facing away from the second ear seat 27. The limiting recess 26 is generally circular and allows the blocking rod segment 41 to rotate within the limiting recess 26. A rotation-stopping groove 25 is provided at the bottom of the limiting recess 26, and an opening groove 24 is also provided at the bottom of the limiting recess 26. The rotation-stopping groove 25 and the opening groove 24 are arranged perpendicularly and intersectingly. The rotation-stopping groove 25 allows the blocking rod segment 41 to extend into the blocking groove 25, and the rotation-stopping groove 25 and the blocking rod segment 41 form a rotation-stopping fit, facilitating the screwing operation of the connecting nut 5.

[0041] The bolt mounting hole on the second lug seat 27 is a tapered hole so that the connecting bolt 4 can be relatively deflected to make way for the first lug seat 14 for easy operation. The diameter of the tapered hole gradually increases in the direction close to the opening slot 24, which is convenient for guiding the connecting bolt to be installed.

[0042] like Figure 1 、 Figure 2As shown in the figure, a lifting ring 3 is provided on the main body of the second clamping body 2. The lifting ring 3 is vertically arranged with the second ear seat 27. By arranging the lifting ring 3 on the second clamping body 2, when the lifting ring 3 is in a suspended state, after loosening the connecting nut 5, the first clamping body 1 can be opened under its own weight, which is convenient for operation. The lifting ring 3 is welded to the second clamping body 2 to form a fixed lifting ring. When a person grabs the lifting ring 3 to carry the pipe clamp device, it can prevent the pipe clamp from shaking and squeezing the hand.

[0043] At one end of the first clamping body 1 and the second clamping body 2 along the axial extension direction of the oil pipe clamping hole, a first stop edge 11 and a second stop edge 21 are respectively provided. The first stop edge 11 and the second stop edge 21 are respectively semi-circular rings, so as to form a stop disc after the first clamping body 1 and the second clamping body 2 are closed. By using the stop disc, it is convenient to form a stable stop fit with the clamping point set at the connecting oil pipe drum, and prevent the coiled tubing from retracting.

[0044] By using the T-shaped connecting bolt to cooperate with the opening slot, the bolt mounting hole and the nut, the quick loading and unloading of the pipe clamp can be realized. Only need to loosen a few threads of the connecting nut, and rotate the T-shaped end of the connecting bolt to directly open it. The fixed lifting ring makes it safer, more convenient, faster and more efficient when towing or fixing the oil pipe. By forming a stop disc, a larger contact area can be formed with the corresponding clamping point, and the stop is stable. The structure is simple and practical, which improves the operation safety and operation efficiency.

[0045] Embodiment 2 of the coiled tubing pipe clamp device in the present utility model:

[0046] This embodiment provides a different form of the first ear seat from Embodiment 1. The difference between this embodiment and Embodiment 1 is that in Embodiment 1, a rotation stop groove is provided at the opening on the side of the first ear seat facing away from the bolt mounting hole of the opening slot. In this embodiment, no rotation stop groove is provided, and the stop rod section of the connecting bolt is stopped from rotating by a wrench tool.

[0047] Embodiment 3 of the coiled tubing pipe clamp device in the present utility model:

[0048] This embodiment provides a different form of the first ear seat from Embodiment 1. The difference between this embodiment and Embodiment 1 is that in Embodiment 1, a limiting sunk groove is provided on the side surface of the first ear seat facing away from the bolt mounting hole. The rotation stop groove and the opening slot are both opened at the bottom of the limiting sunk groove, and an activity space for the rotation of the stop rod section is provided in the limiting sunk groove. In this embodiment, no limiting sunk groove is provided, and the lower side surface of the first ear seat is a plane.

[0049] Embodiment 4 of the coiled tubing pipe clamp device in the present utility model:

[0050] This embodiment provides a form of bolt mounting hole setting different from that of Embodiment 1. The difference between this embodiment and Embodiment 1 is that the bolt mounting hole in Embodiment 1 is a tapered hole. In this embodiment, the bolt mounting hole is an equal-diameter hole.

[0051] Embodiment 5 of the coiled tubing clamp device in the present utility model:

[0052] This embodiment provides a form of bolt mounting hole setting different from that of Embodiment 1. The difference between this embodiment and Embodiment 1 is that the diameter of the tapered hole in Embodiment 1 gradually increases in the direction towards the opening groove. In this embodiment, the diameter of the tapered hole gradually increases in the direction away from the opening groove.

[0053] Embodiment 6 of the coiled tubing clamp device in the present utility model:

[0054] This embodiment provides a form of lifting ring setting different from that of Embodiment 1. The difference between this embodiment and Embodiment 1 is that a lifting ring is provided on the second clamping body in Embodiment 1. In this embodiment, the lifting ring is provided on the first clamping body.

[0055] Embodiment 7 of the coiled tubing clamp device in the present utility model:

[0056] This embodiment provides a form of lifting ring setting different from that of Embodiment 1. The difference between this embodiment and Embodiment 1 is that the lifting ring is welded to the second clamping body in Embodiment 1. In this embodiment, the lifting ring is hinged to the second clamping body.

[0057] Embodiment 8 of the coiled tubing clamp device in the present utility model:

[0058] This embodiment provides a form of clamping body setting different from that of Embodiment 1. The difference between this embodiment and Embodiment 1 is that at least one end of the first clamping body and the second clamping body in Embodiment 1 along the axial extension direction of the tubing clamping hole is provided with a retaining edge. In this embodiment, no retaining edge is provided on the clamping body, and only the end face of the clamping body forms a retaining fit with the corresponding clamping point.

[0059] Embodiment 9 of the coiled tubing clamp device in the present utility model:

[0060] This embodiment provides a form of clamping body setting different from that of Embodiment 1. The difference between this embodiment and Embodiment 1 is that slip jaws are respectively provided on the opposite sides of the first clamping body and the second clamping body in Embodiment 1. In this embodiment, no slip jaws are provided on the clamping body, and the coiled tubing is directly clamped by the groove wall of the clamping groove.

[0061] Embodiment 10 of the coiled tubing clamp device in the present utility model:

[0062] This embodiment provides a form of bolt mounting holes different from that of Embodiment 1. The difference between this embodiment and Embodiment 1 is that the bolt mounting holes in Embodiment 1 are through holes for the connecting bolts to pass through, and a connecting nut is threadedly connected to the part of the screw rod section of the connecting bolt that passes through the bolt mounting hole and is away from the opening groove. In this embodiment, there is no connecting nut and anti-rotation groove, the bolt mounting hole is a threaded hole, and the screw rod section of the connecting bolt is threadedly connected to the threaded hole, and the connecting bolt is tightened by screwing the blocking rod section.

[0063] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still make modifications to the technical solutions described in the foregoing embodiments without creative efforts, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A coiled tubing clamp device, comprising a first clamping body and a second clamping body for clamping the coiled tubing, wherein one end of the first clamping body and the second clamping body are hinged, and the other end of each clamping body is provided with an ear seat and fixedly connected by a connecting bolt, wherein: The connecting bolt includes a screw segment and a baffle segment with a perpendicular extension direction. An open groove is provided on the ear seat of the first clamping body, and a bolt mounting hole is provided on the ear seat of the second clamping body. The open groove and the bolt mounting hole are used to install the screw segment of the connecting bolt. The groove width of the open groove is smaller than the length of the baffle segment and larger than the width of the baffle segment. The baffle segment has a stopping position within its rotation range for cooperating with the ear seat of the first clamping body to tighten the connecting bolt, and an avoidance position for corresponding to the opening groove so that the ear seat of the first clamping body passes through the opening groove to avoid the baffle segment when the first clamping body is opened relative to the second clamping body.

2. The coiled tubing clamp device according to claim 1, characterized in that: A connecting nut is threadedly connected on a portion of the screw rod segment that passes through the bolt mounting hole and is away from the opening slot.

3. The coiled tubing clamp device according to claim 2, characterized in that: A rotation-stopping groove is provided at the opening of the opening groove on one side facing away from the bolt mounting hole. The rotation-stopping groove is cross-arranged with the opening groove, and the blocking rod segment is inserted into the rotation-stopping groove to stop the blocking rod segment from rotating.

4. The coiled tubing clamp device according to claim 3, characterized in that: A limiting groove is provided on one side of the ear seat of the first clamping body facing away from the bolt mounting hole. The anti-rotation groove and the opening groove are both opened at the bottom of the limiting groove. A movable space for the blocking rod segment to rotate is provided in the limiting groove.

5. The coiled tubing clamp device according to claim 2, 3 or 4, characterized in that: The bolt mounting holes are tapered.

6. The coiled tubing clamp device according to claim 5, characterized in that: The diameter of the tapered hole gradually increases toward the opening groove.

7. The coiled tubing clamp device according to claim 1, 2, 3 or 4, characterized in that: The second clamping body is provided with a hanging ring.

8. The coiled tubing clamp device according to claim 7, characterized in that: The lifting ring is welded to the second clamping body.

9. The coiled tubing clamp device according to claim 1, 2, 3 or 4, characterized in that: The first clamping body and the second clamping body are respectively provided with clamping grooves to enclose the oil pipe clamping hole. At least one end of the first clamping body and the second clamping body along the axis extension direction of the oil pipe clamping hole is provided with a blocking edge.

10. The coiled tubing clamp device according to claim 1, 2, 3 or 4, characterized in that: Slips are respectively provided on opposite sides of the first clamping body and the second clamping body.

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