JPS59194193A - Clamping device for tubular member - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] The present invention is a clamp bin for holding a tubular member. Guso V is busy.

Clamping devices have long been used in oil and natural gas wells to hold and support ripples.

Clamps are well casings (wttll eαsings)
) and well rise pipe Cw#rl witty) and support Te,
Holds a row of pipes suspended in open valves installed in or removed from a well and drills a row of drills during well drilling.
g) It is used for holding etc. however,
Known prior art devices do not allow the clamped tubular member to be clamped against the clamping device while the tubular member is securely clamped at the same time.

In order to securely grip the shaped member, a button is provided.
Known prior art devices generally include multiple shows having vertically splined and horizontally splined heads. Grip the surface of the tubular member to prevent both rotational and longitudinal movement. Once the force applied to the tubular member is large enough to cause rotational or longitudinal movement, the splined jaw head will cause damage to the surface of the tubular 1” material. It will be.

Other known prior art clamping devices include continuous smooth gripping surfaces. Such devices do not allow longitudinal movement of the tubular member while it is securely gripped.

According to the invention, the clamping device comprises a tubular member. The device applies a uniform radial clamping load to the tubular member while allowing the tubular member to move longitudinally with a predetermined force.

In certain embodiments of the invention, the clamping device comprises three
two clamp members, each of which is rigidly attached and the other two clamp members are loosely hinged to the first clamp member. A fluorine liner for gripping the tubular members is provided on each of the clamp members. Each liner exerts a concentrated gripping force on the tubular member.

and a plurality of axially disposed ribs providing water drainage channels.

During sweeping, adjacent clamp members are bolted together to close the clamping device around the tubular member. In order to apply a predetermined axial load on the tubular member, the port 1d is tightened to a predetermined torque or a predetermined gap is obtained between the clamping member and the surface of the tubular member (tightnn). Closing the clamp around the tubular member compresses the lip of the liner by about 20 degrees.

Each of the clamp members is rigid.

And the liner is preferably made of a resilient material. As the clamping device is tightened firmly against one of the tubular members, all deflections of the tubular member Cdefl
) is absorbed by the liner.

The other two clamp members are hinged to the first clamp member, but not loosely hinged. Toggle handle locking structure (scrttwlatch loc)
A King 5 structure is used to hold the entire clamping device around the tubular member. The locking structure may include a structure for locking a toggle knob or a screw latch in a closed position.

The clamping device of the present invention applies a relatively predictable radial load to the tubular member. Thus, a more predictable longitudinal force is exerted in the longitudinal direction of the tubular member relative to the clamping device! It is necessary to calculate τh.

When the magnitude of the longitudinal force applied to the tubular member exceeds a predetermined value, the tubular member is allowed to slide through the resilient liner. This prevents forces greater than a predetermined value from being applied to the clamping device and its supporting structure, thereby preventing the clamping device from being applied.

Prevents damage to the support 114 structure and tubular members.

The invention will be further described with reference to the accompanying drawings. Referring to the accompanying drawings, particularly FIGS. 1 and 2, a clamping 1t10 is arranged around the circumference of the tubular member 12. As shown in FIG.

The clamping device 10 includes a support structure 14. and a central clamp member 16 firmly connected to first and second side clamp members 18 and 20. Clamping members 16% 18 and 20 are disposed adjacently four quarters of the tubular member 12, with each clamping member engaging an angular segment of the member of approximately 120°. 11 In the shown position A and V (in this case, the valley clamp member d) fits approximately 120° of the 〒-shaped member.

lj2 (/) In a preferred configuration (Se1: not shown), the clamping members 161. holds.Other variations will be obvious to the challenger.

Liner elements 22.24 and 26 are supported by clamp members 16.18 and 20, respectively.

A liner element, preferably made of a resilient material, is included in the annular region between the sleeve member 12 and the clamp members 16, 18 and 20. Each of them arranges the tubular member at a distance from the clamp member.

The side clamps h(, members 18 and 20 are each loosely hinged to the central clamp member 16r).

In the embodiment shown, the central clamp member 16 includes a gusset (gqbttsgt) 28 at each of its ends.
．． 28' is supported. The bin 30.30' is supported by side clamping members 18.20 at its end adjacent to the central clamping member 16. Bin 30.30' (shown in FIG. 5) is cut out from set 28.28' (shown in FIG. 4).
tion). When so accommodated, the gusset and bin essentially form a loose hinge that allows the side clamp members 18 and 20 to be opened wide for insertion of the tubular member 12.

The clamping members 16, 18, 20 each have a plurality of bolts 3
2. Each bolt 32 is threadedly secured to a nut 34.

Referring to FIG. 3, the liner elements 22 support plate 4
2 is illustrated in cross section attached to FIG. Liner element 22 includes a plurality of lip elements 36 and a plurality of surface portions 40. The centers of the lip elements 36 that are in momentary contact are spaced apart from each other by a distance X. The approximate hit of each rep element 36 is indicated by the reference letter Y. In the case of Woo 4 shown, the X' to Y ratio lri is approximately 2 to 1. liner element 24
and 26 are substantially the same as liner element 22.

In operation, the hinged side clamp members 18 and 20 are swung open (svJ91.ng
(opttn) allows the clamping device 10 to receive the tubular member 12; Side clamp member 18
．． 20 is then rocked closed.

Their j (F contact ends are loosely bolted together. The one contact end of the side clamp member 18 and the center clamp member 16 and the fourteen contact ends of the side clamp member 20 and the center clamp member 16 are each loosely bolted.) are mutually tightened.

-17- The bolts 32 and 34 are then tightened to close the clamp members 16, 18 and 20 around the tubular member 12. As the bolts are tightened, the liner elements 22.24 and 2 disposed between the tubular member 12 and the clamping members 16.1°8 and 20
6 is compressed.

To apply a predetermined axial load to the tubular member 12, the nuts and bolts are tightened to a predetermined torque or until a predetermined clearance is obtained between the clamping member and the tubular member. Preferably, the lip elements 36 of the liner elements 22, 24 and 26 are compressed by about 2(l) when a predetermined torque or predetermined clearance is obtained.

Lip element 36 included in liner elements 22, 24 and 26
applies a concentrated gripping force to the tubular member 12 when the clamping device is clamped (sscu de 11) around the tubular member. When so tightened, the surfaces of tubular member 12 and lip element 36 and surface portions 40 of liner elements 22, 24, 26 define a number of water drainage channels.

Clamp members 16, 18 and 20 are preferably dimensioned relative to the outer housing of tubular member 12 such that tightening of ports 32 applies a substantially uniform radial load to layered member 12. The three-piece clamping member design of the present invention undesirably deflects the liner element radially at three uniformly spaced locations around the layered member. Mosquito large ohu radia fiv (0ff-r) inside the liner side
The radial) angle is less than 50°, while that with the two-piece clamp member structure extends at 90°.

Referring to Figures 6A+, B and 0, another embodiment of the clamping device according to the present invention is illustrated.

The illustrated uniformly includes a screw latch locking structure with a T-handle 50 threadably engaged by member 52. Member 52 is pivotally connected to a plate 56 provided on clamp member 18 by a pivot pin 54 .

The clamp member 18 is a bit member 64 and the clamp member 1
6, and the clamp member 20
is hingedly attached to the clamp member 16 by a pin member 66.

In operation, clamp members 16, 18 and 20 are positioned around tubular member 12 and T-handle 5
0 and member 52 are pinned to pin pin 54 such that a surface 62 included in the T-handle is adjacent to a surface 1f 160 included on gusset 58 supported on clamp member 20.
is pivoted around M. This is best illustrated in Figure 6B. T-handle 50 is then rotated to increase its threaded engagement with member 52, thereby closing the clamping device around tubular member 20 as shown in FIGS. 6B and 6C.

When the clamping device is in the closed position about the T-shaped member 12, the holes provided in the locking plates 68 and 70 supported on the clamping members 18 and 20, respectively, are closed. Then install a suitable locking bin (
(not illustrated) can be extended through aligned holes itC in plates 68 and 70 to lock the cypress fingers in the closed position.

FAT A-7B and 7C In another case, the clamping fitting according to the present invention includes a toggle handle locking structure. The illustrated embodiment has a toggle handle 80 torsionally engaged to a handle member 82. The handle member 82 is a pivot member 9
It is pivotally and retractably connected to a plate 88 supported on the clamp member 18 at 0.0.

The toggle link 84 is connected to the handle member 8 by a pivot member 96.
It is pivotably connected to 2 by a pivot.

Toggle link 84 includes an end member 86 that engages a surface of plate 92 supported on clamp member 20 at the operating promontory. This is best shown in Figures 7B and 7C. A suitable locking structure (
(not shown).

The embodiment shown in Figures 6 and 7 reduces installation time by eliminating the need for bolting. Furthermore, the embodiment of FIGS. 6 and 7 can be operated by one person and without the use of tools such as wrenches and pliers.

The principles, preferred embodiments and modes of operation of the invention have been elucidated in the foregoing description. The invention is not to be construed as limited to the particular form 1cPlj disclosed. This is because they are considered to be more illustrative than limiting. Modifications and alterations may be made by those skilled in the art without departing from the essence of the invention.

[Brief explanation of the drawing]

11th F+ is the freezing of the tubular member arranged in the vertical direction (
(partially cutaway side view of the clamping device according to the invention shown in place, FIG.
Figure 4 is a top view of the clamping device shown in Figure 1 and Figure 2. Fig. 5 is a plan view of a pin used in the clamping device shown in Figs. 1 and 2. i% 6 Figures A, B and 0 are top views of the clamping device according to the invention with four screw latch locking parts. It is a top view of the clamping device according to the invention. In the figure, 10... clamping device. 12... tubular member, 14... support structure, 16...
- Center clamp member, 18... first side clamp member, 20... second side clamp member, 22.24.
26...φ liner essential system. 28.28'...Gusset, 30,30' ・
...Bin, 36...Rip element, 50...T-handle, 54...G & Notton, 58...Gusset, 6
4.66...-Pivot member, 68°70... Locking plate, 80... Toggle handle, 84...
It's a toggle link. Now・φ

Claims (1)

Claims: 1. The relative relationship between the tubular member and the clamping device is adapted to be connected to a support structure and when a longitudinally directed force of a predetermined magnitude is applied thereto. A clamping device adapted to receive and movably retain a tubular member to permit longitudinal movement, the clamping device being adapted to receive and movably retain a tubular member such that each liner element engages at least a portion of the tubular member. multiple liner elements. a plurality of clamp members each having a structure adapted to receive one of the plurality of liner elements, and a structure for coupling the clamp members in kJ contact, the structure comprising: means for closing the clamping device about the tubular member, the means for closing the plurality of clamping members and the plurality of liners to apply substantially different radial ramming forces to the tubular member; A clamping device comprising said structure adapted to cooperate with an element. 2. Nuclear? ! The clamp member is. each comprising a central clamp member and first and second side clamp members. The clamping device is adapted to engage a portion of the tubular member when in the closed position. The central clamp member is adapted to be rigidly connected to the support structure, and each of the clamp members has first and second ends, and a second side of the first side F clamp member is adapted to be rigidly connected to the support structure. The end portion is disposed adjacent to the first end portion of the central clamping member, and the second end portion 41 of the central clamping member is located adjacent to the first end portion of the second side clamping member.
A clamping device according to claim 1, wherein the clamping device is arranged adjacent to the end. 3. Coupling adjacent clamp members!
3. The first side clamp state (the second part of the material)
t'A' and the 84b1 end of the central clamp member, and the center clamp layer, the second end of the lumber, and the second end of the second clamp member. Connect the first force part with a hinge>+
3. The clamping device according to claim 2, comprising: a fl body. 4. The means for closing the second end of the first side clamp member and the first end of the center clamp member at t? The first installation for connecting 115g is a means. b! the second end of the center clamp member and the first end of the second side clamp member; 51 The second attachment for constant connection is with means. Claim 2, wherein the third attachment includes means for fixedly securing the first end of the first side clamping member and the second end of the second side clamping member. clamping device. 5. The clamping device of claim 1, wherein each of said liner elements includes means for applying a concentrated gripping force to an outer surface of said tubular member. 6. Claims wherein each of said liner elements comprises a plurality of longitudinally disposed lip elements enclosing a surface portion and said means for applying a concentrated force protruding from said surface portion. Clamping device as described in Clause 5. 7. The clamping device of claim 6, wherein adjacent lip elements are spaced apart from each other by a distance substantially equal to the width of one lip element. & the surface portions of the plurality of longitudinally disposed lip elements and the plurality of liner elements cooperate with the outer surface of the vertical member? Know and define the drainage channel of W number. In silk mating with a QB-shaped member having an outer surface. A clamping device according to claim 6 h1; ζ.). 9. Each of the four liner elements includes a plurality of lip portions, the edges of the lip portions being arranged substantially parallel to the longitudinal axis of the clamping device,
The clamping device described in Section 1 of Disciple. 10. Patent ii, wherein each of the liner elements comprises an elastic body.
The clamping device according to item 9 in the range #; 11. The lip portion of the liner trough is adapted to be compressed when the substantially uniform radial clamping force is applied to the tubular member. clamping device. 12. supporting the tubular member relative to the support structure; 5- And as a device for retaining it movably. a central clamp member adapted to be rigidly connected to the support structure and adapted to engage a portion of the tubular member; first and second side clamp members, each of the first and second members being disposed proximate to the center clamp member; a structure for coupling adjacent clamp members with first and second side clamp members adapted to engage a portion of a tubular member, the first and second side clamp members being adjacent; a structure including means for retaining the clamping member in a position m disposed such that when a longitudinally directed force of a predetermined magnitude is applied a concentrated radial force is applied to the tubular member; Applying a gripping force, the relative length between the tubular member and the device 6 - Direction - IlV! IF: each clamping member includes a liner element having a convolution to hold the tubular member in a manner that allows the clamping member to hold the tubular member in a manner that allows the clamping member to retain the tubular member in a manner that allows for 13. Support the ・shaped member also against the unsupported/finger body, and;
If (two clamps for movably holding the clamp member), the clamp member is adapted to be fixedly held in the support structure by 4 points, and one of the tubular a center clamp adapted to engage a portion of the member; first and second side clamp members, the valleys of the side clamp members being attached to the cough center clamp member; first and second side clamp members disposed and each adapted to engage a portion of the tubular member; the side clamp members loosely coupling the member to the central clamp member; a structure included on the clamp member to securely couple the side clamp member and the center clamp member; and a structure included on the clamp member to securely couple the side clamp member and the center clamp member. a first lychee element, a second liner element and a third liner element included on the side clamp member, the second side clamp member and the center clamp member, each liner element having a longitudinal dimension of a predetermined size; said 1-shaped member so as to apply a concentrated radial clamping force on said tubular member to permit relative longitudinal movement between said tubular member and said clamping device when a directed force is applied thereto; said clamping device comprising said liner ligature adapted to retain said liner ligature. 14. said means for closing comprising a locking structure included on said first and second side clamp members; 15. The clamping device according to claim 2. 15. The locking structure is pivotably disposed on the first and second F clamp portions of the clamp, and is also adapted to prevent the engaged blood from entering the clamping device. Claims comprising: a structure having a spacing/finger body and a second locking surface included on the second side clamp member and adapted to lock onto the six sides of the lance. Clamping → positioning according to claim 14. 16. Claim 15, wherein the structure pivotally connected to the first side clamp member) at the lf>i axis includes a 7"-handle member. 17. The clamping device of claim 15, wherein the structure pivotally connected to the first side clamp member includes a todal member.