FR2533292A1 - DEVICE FOR HAMING A PIPE FOR COUPLING IT TO A PIPE SUPPORT DEVICE - Google Patents

Abstract

DEVICE FOR CLAMPING A PIPE FOR COUPLING TO A PIPE SUPPORT DEVICE. THE PIPE CLAMPING DEVICE 10 USED FOR COUPLING A PIPE 12 TO A PIPE SUPPORT DEVICE 14 INCLUDES A METAL CABLE 30 WOUND AROUND AT LEAST A PART OF THE PERIPHERAL WALL OF THE PIPE 12 FOR SUPPORTING THE LATTER, AND A TERMINAL ELEMENT 32 WHICH IS MOUNTED ON EACH END OF THE WIRE CABLE 30 AND THE EXTERNAL END OF WHICH CAN BE ASSEMBLED TO THE PIPE SUPPORT DEVICE 14.

Description

DEVICE FOR HAMING A PIPE FOR ACCOUPLER

HAS A PIPE SUPPORT DEVICE

  The present invention relates to a device for clamping a pipe, which is a device of a so-called non-monoblock fastening, for coupling a pipe to a pipe.

pipe support device.

  A large amount of piping is used especially in a chemical plant or nuclear power plant. The respective pipes are generally coupled to pipe support devices. Up to now, various types of pipe support devices have been developed. they use the so-called constant suspension system, the variable suspension system, the hydraulic pressure type damper,

  and the mechanical damper The pipe is coupled to the

  Positive pipe support by means of a mono-

  Block or Non-Monoblock Fastener FIG. 1 shows a typical non-monoblock fastener pipe clamping device, which includes a pair of pipe clamp strips 102 and a plurality of clamp bolts. 106 is clamped between the paired bands 102 by means of the clamping nuts 104. The clamped pipe 106 is coupled to a device (not shown) for supporting a pipe by a pipe clamping or clamping device 100. Although widely accepted, the conventional pipe clamping device 100 is still susceptible of many improvements With regard to the conventional pipe clamping belts 102 which are usually manufactured by a plate bending operation, it is difficult to adjust them to the outer periphery of the pipe 106 Even if the inner surface of the

  strips 102 is machined so that dimensional accuracy

  it is very difficult to adjust these bands on the outer periphery of the pipe because, in

  part, of the manufacturing tolerance of the pipe itself.

  Incomplete fitting of the strips on the pipe results in the local occurrence of exaggerated stresses in the strips and in the pipes themselves as a result of local contact between these strips and these pipes and also causes the appearance of a structural gap between This makes it difficult to maintain a structural integrity against eccentric loads. Various disadvantages arise when this pipe clamping device is applied specially, for example, to a damper such as A vibration dampener and an anti-seismic device The structural gap remaining between the pipe and the strips finally leads to a disappearance of the function of the support device. With regard to the conventional pipe-clamping band, the characteristics of this depends for a great deal on the flexural strength of the plate, this resistance leading to a greater increase in weight as a result, in part, an increase in size and

  the diameter of the strip and, in part, its

  This also communicates exaggerated concentrated stresses to the piping system, which

  decreases the rigidity of this system.

  This is why the subject of the present invention is

  a hose clamping device of non-fastening

  monobloc which has a simple structure and is used with a pipe support device and does not have the aforementioned drawbacks accompanying the conventional pipe-clamping device and may be used

with great security.

  To achieve the above-mentioned object, the pipe clamping device according to the present invention comprises: a cable wound tightly around at least a portion of the pipe for its support; and an intermediate coupling element assembled at one of its ends at both ends of the cable and connected at its other end to a support device

of pipe.

  A pipe support device made according to the

3 2533292

  The present invention is constructed to primarily support the weight of the pipe, includes a wire rope so as to eliminate the use of a clamping means or a rigid pipe clamping element. The invention has the following advantages: a rigid element for tightening or blocking a pipe is unnecessary, which saves the materials necessary for the manufacture of this element; it is not necessary for the pipe to be coupled to a pipe support device by means of such an element; the flexible wire rope is tightly mounted

  on the peripheral wall of the pipe, which automatically

  the uniform application of the mechanical stresses to the peripheral wall of the pipe and avoids the local application of an exaggerated stress to this pipe; a static friction appears permanently between the pipe and the wire rope, which eliminates the relative displacement. enter

this pipe and this cable.

  An intermediate coupling element is provided for coupling between the wire rope and the pipe support device by mounting a socket-shaped end element on each end of the wire rope. This end element is provided at its outer end with a through hole Wire rope

  is coupled to the hose support device by the

  The intermediate element of accou-

  the type mentioned above can be easily

  manufactured and mounted on the pipe support device.

  Another preferred type of intermediate coupling element used in a pipe clamping device which is coupled to a damper comprises a hollow intermediate assembly mounted on the desired part of the pipe, a terminal element which is mounted on each end of the wire rope and is threaded at its outer end portion, and a nut screwable to said threaded outer end portion The threaded rod extends through a guide plate of the hollow intermediate assembly and is assembled with a spherical or circular seat and a nut at its other end When a nut is properly screwed on the Eiletées rods disposed at both ends of the wire rope, the pipe held between the wire rope and the intermediate assembly is closely attached to said assembly Intermediate The rigidity of the hose enclosure can be adjusted according to the types of dampers used in regulating

  the clamping force of the wire rope using the nut.

  A pipe can easily be coupled by a pipe support device by means of a through-hole formed in the end portion of the intermediate assembly although it is more complicated than the first embodiment.

  does not include an intermediate set, the mode of

  Figure 7 does not have the disadvantages mentioned below, which is encountered in the conventional clamping or clamping device. This is so because, in this embodiment, the wire rope is firmly mounted. on the periphery

  outside the pipe, which avoids the appearance of

  exaggerated localities in the pipe as those encountered in the conventional device and that maintains the structural integrity through the braking function of the wire rope without putting into play the sliding against the eccentric loads If, for such a non-monoblock fastener, a high rigidity is necessary vis-à-vis the direction in which the support device is mounted, is carried out the conventional device for clamping pipe so as to increase the thickness

  of the pipe clamping band With the device

  In the present invention, the rigidity of this device can be increased by increasing the tensile force of the wire rope without the need to increase its weight as is the case in the conventional device. The present invention will now be described with reference to the accompanying drawings, in which Figure 1 illustrates one of the conventional devices for clamping or clamping pipe; Figure 2 shows a pipe coupled to a pipe support device by means of a clamping or pipe clamping device according to a first embodiment of the invention; Figure 3 is a side view of the pipe clamping device of Figure 2 mounted on a pipe; Figure 4 shows the pipe clamping device of Figure 2 wrapped around the pipe about one-quarter turn for its support;

  Figure 5 shows a turnbuckle mounted on the end

  outer mating device or pipe clamping device;

  Figure 6 shows a terminal arranged at the end of

  outer member of the clamping device or pipe clamp of FIG. 2; Figure 7 shows a device for clamping or clamping pipe according to a second embodiment of the invention; Figure 8 is a side view of the pipe clamping or clamping device of Figure 7; Fig. 9 shows a hose clamping or clamping device according to another embodiment of the invention, which embodiment is adapted to couple a hose to two hose support devices; and

  Figure 10 shows the state in which the provision

  The squeezing device or pipe clamp of the present invention is applied to the bent or bent portion of the pipe. Referring to FIG. 2, a device 10 for clamping a pipe according to a first embodiment of the present invention will now be described, this device coupling a pipe 12 to a device 14 for supporting a pipe. -pipe

  is a spring suspension device of the variable type.

  The pipe support device 14 is mounted on a support structure 16 of a building. The pipe support device 14 comprises a turnbuckle 22 resiliently supported by a spring attached to the main body 18; a coupling rod 24 extending downwardly from the turnbuckle 22;

  a coupling clip 26 mounted on the end

  lower half of the coupling rod 24; and

  an axle 28 mounted in the coupling clip 26.

  The pipe clamping device 10 of FIG. 2 according to the first embodiment uses a wire rope 30 whose bottom portion is closely pressed against substantially three quarters of the peripheral wall of the pipe 12 and an intermediate coupling element 31. for coupling the wire rope 30 to the coupling rod-24 of the hose support device 14. In the first embodiment of FIG. 2, the intermediate coupling element 31 comprises a bushing-shaped terminal element 32 mounted on Each end of the wire rope 30 A through hole 34 is drilled in the outer end of the end members 32 The coupling clip 26 and the end members 32 are mutually joined The pin 28 passes through the hole 34 thus allowing the pipe 12 to be supported solidly

  from the bottom side of the pipe support device.

  The pipe clamping device 10 of FIG. 2 according to the first embodiment of the present invention is free of the band 102 (pipe clamping figure 1 (which requires precise machining at a high price) and can be manufactured The other advantages of the pipe clamping device 10 of FIG. 2 are that if the wire rope 30 has a certain margin of length, the pipe 12 can be securely mounted on the support device 14. hose, even when the outside diameter of the pipe 12 varies somewhat, even if the vertical position is slightly modified, the pipe 12 can be maintained at a designated height by means of the turnbuckle 22, the flexible wire rope 30 can be pressed almost uniformly against the peripheral wall of the pipe-12; the application to a pipe of exaggerated stresses which could result from the nonuniform clamping of the pipe 106 by the pipe clamping band 102 (see FIG. Another advantage of the device of the present invention is that the pipe 12 can be mounted on the pipe support device 14 with great ease. The reason for this ease is that through the use of the device According to the first embodiment of the present invention, the pipe coupling 12 is obtained by coupling the pipe 12 to the pipe suspension device 14 simply by pressing the wire rope 30 against the lower part of the pipe. peripheral wall of the pipe 12 and by assembling the sleeve-shaped end element 32 with the coupling clip 26 disposed at the lower end of the coupling rod 24 of the pipe support device 14. In a conventional pipe clamping device of FIG. 1, a pipe 106 is clamped between a pair of pipe clamping strips 102 and is held securely in place by three bolts. Therefore, when installing a large amount of pipe as is the case in large installations, the pipe clamping device of the present invention considerably reduces the time required to connect the piping. to the support structure 16, which contributes

  considerably reduce the cost price of the plant

lation -

  Fig. 3 is a side view showing the lower part of the coupling rod 24 of Fig. 2, the pipe clamping device 10 and a portion of the pipe 12. Fig. 3 clearly indicates the manner in which the fastening The coupling member 26 disposed at the lower end of the coupling rod 24 is assembled with the end member 32 mounted on both ends of the wire rope 30. As can be seen in FIG. 3, the coupling clip 26 is provided at one of its ends with a U-shaped block 26a and one of the end elements 32 is provided in a manner similar to one of its ends with a U-shaped block 32a. Terminal-shaped terminal element 32 is

  provided at one of its ends with a block 32 d dish L'at-

  coupling spot 26 and the end members 32 are mutually coupled by the U-shaped blocks 26a, 32a and the flat block 32b by means of the pin 28 which passes through the hole (not shown) passing through said blocks 26 a,

32a, 32b.

  The method by which the pipe 12 is supported by means of the wire rope 30 illustrated in FIGS. 2 and 3 can find wide application. However, when it is necessary to effectively remove the axial displacement of the pipe 12 coming from, for example, dilation or concentration of elements

  associated with the pipe 12 due to changes in temperature

  If this occurs, the wire rope 30 must be wrapped around the pipe 12 one or more times. In addition, it is also advisable to insert a plate-shaped pad (not shown) which is intended to generate friction

  important against the wire rope 30 and the pipe 12.

  The turnbuckle 40 shown in FIG. 5 makes it possible to easily couple the rod 24 and the end elements 32, which

  this stem and these terminal elements are close to one -

  on the other side or strongly away from each other In addition, when it is not necessary to rigidly define

  the position in which the pipe 12 is suspended from the

  4, the coupling rod 24 and the wire rope 30 can be mutually coupled by means of the simple means shown in FIG. 6. In this case, the outer end of the wire rope 30 is provided with a annular element 44 formed of a lug and a fixing bracket A lug 46 forming part of said annular element 44 is coupled, for example, to a hook (not shown) disposed at the lower end of the rod

coupling 24.

  With reference to FIG. 2, one of the types of the hose support device 14 is described. However, the hose support device 14 is not necessarily

  limited to this type but may be formed by any other structure

  By means of a variable suspension device, a constant suspension device, a rigid suspension device, a cable for securing the pipe 12 is generally formed by a metal cable in order to ensure mechanical strength and durability However, if necessary, the cable can be prepared using a non-metallic material such as

  example a fiber cable reinforced by resin -

  The hose clamping device of the present invention for coupling a hose 12 to a hose support device 14 comprises a cable tightly surrounding at least half of the peripheral wall of the hose 12 to support this hose and an element. terminal 32 mounted on each of the ends of the cable to effect the attachment of the cable to the pipe support device 14. Therefore, the above-mentioned pipe clamping device according to the present invention prevents the pipe 12 from being clamped by the pair of rigid bands 102 that

  includes the conventional pipe clamping device.

  Therefore, even if variations occur in the shape or measurements of the hose and the hose clamp, the cable of the invention may be

  fastened around the pipe with a substantially uniform force

  This prevents the local application of undue stress to the pipe. Furthermore, the pipe clamping device of the invention provides easy support for pipes of different diameters or non-circular straight sections. The invention which supports a hose by its pulling force can be manufactured with the smaller dimensions and lighter weight than the conventional hose clamping device and, more importantly, the cable can be manufactured easily it is necessary to use matrix, template, or

  other special machining devices.

  Referring now to FIG. 7, a pipe clamping device according to a second embodiment of the invention will now be described. The pipe clamp device 50 shown in FIG. 7 comprises a metal cable 30, an end element 52 mounted on each end of the metal cable 30 and an intermediate assembly 54 assembled with the two terminal elements

  The end element 52 is provided at its outer end with

  a threaded portion 56 extending upwards.

  The intermediate assembly 54 is mounted on the pipe 12 and comprises a curved plane 52 in contact with a portion of the peripheral wall of the pipe 12 and a pair of guide plates 70a and vertical holes or slots 60 in the form of U, spherical or circular seats 70b

  and a protrusion 62 extending upwardly from

  from the center point of the upper half-section of the outer peripheral wall-of the pipe 12

  intermediate 54 is mounted on a damper (not shown

  by means of an axis 72 will insert into a hole 64 formed at the end of the projection 62 to couple the pipe 12 and the pipe support device, the

  threaded portion 56 of the terminal element 52 of the metal cable

  30 in the hole 60 of the spherical or circular seat b of the intermediate assembly 54 so that it protrudes upwardly therefrom at this stage, the pipe 12 is placed between the wire rope 30 and 1 l intermediate assembly 54 The pipe 12 is tightened tightly against the intermediate assembly 54 by means of nuts 66, 68 and the threaded portion 56 The pipe 12 is coupled to the pipe support device (not shown) by mounting the intermediate assembly 54 on the pipe support device by means of an axis or pin 72 which is introduced into the above-mentioned hole 64 formed in the upper end of the projection 62 The end elements 52 of the wire rope 30, the nuts 66, 68 and the seat

  spherical or circular 70 b as well as the intermediate

  54 of Figure 7 correspond to the coupling element

  In the embodiment of FIG. 7, the pipe 12 is securely assembled to the intermediate assembly 54 by virtue of the curved plane 58 and the clamping force of the wire rope. 30, which has the advantage of preventing any undesirable relative displacement between the pipe 12 and the pipe clamping device. In the embodiment of FIG. 7, the wire rope 30 is surrounded around the peripheral wall. of the pipe 12 over approximately one and a half turn Depending on the various physical conditions of the pipe 12, including the cross-sectional shape of the latter and its load condition, the support of the pipe 12 may be provided by winding the wire rope 30 substantially around the lower half of the peripheral wall of the pipe 12 or, conversely, by winding the cable 30 several times around the peripheral wall of the pipe 12. In the embodiment of FIG. 7, the nuts 66, 68 screwed onto at least one of the threaded portions 56 of which the two end elements 52 of the metal cable 30 are provided can communicate with each other.

  desired pulling force to the wire rope 30 to allow

  so to hose 12 to be assembled to the entire international

  The wire rope 30 having a low flexural stiffness can be easily bent around the peripheral wall of the tube 12 in a state pressed tightly against the peripheral wall, effectively suppressing the relative rotation of the pipe 12 and of the intermediate assembly-54 or their axial displacement. Fig. 9 shows a pipe clamping device according to a second embodiment of the present invention, this second embodiment being adapted for coupling to two pipe support devices. This arrangement is the same as that of Fig. 7. except for a pair of projections 62 and holes 64. Fig. 10 shows a hose clamp according to the present invention which, in addition to being applied to a straight portion of a hose, can be easily mounted on a bent portion of a pipe, which was not possible with the conventional pipe clamping device The arrangement of FIG. 10 is similar to

  the one represented on Figures 7 and 9.

  The wire rope 30 used in the pipe clamping device of FIGS. 7 and 8 has a high elasticity and maintains a pipe clamping force which can be annihilated as a result of sliding. If the number of turns around the pipe 12 is increased, the wire rope 30 eliminates the relative displacement between the pipe 12 and the pipe clamp resulting from the application of an eccentric load. Thus, the malfunction of the pipe support device is avoided.

formed by the ordinary damper.

  FIG. 8 shows a pipe 12 which has no particular coating. However, the pipe 12 may be of

  type which is coated with a heat-insulating layer.

  The intermediate assembly 54 used in the arrangement

  Figure 7 of the second embodiment of the present invention is formed of a pair of intermediate coupling plates 54a, 54b. The threaded portion 56 is mounted on a block. support 70 having guide plates 70a

  connecting said matched coupling plates 54a, 54b.

  The intermediate assembly 54 is mounted on the pipe support device (not shown) by means of an axis or pin 72 penetrating into a hole 64 formed in the end

  each of the paired coupling plates 54a, 54b.

Claims (8)

  Pipe clamping device (10) for coupling a pipe (12) to a pipe support device (14), characterized in that it comprises: a cable (30) wound tightly around at least a portion of the peripheral wall of the pipe (12) for supporting the pipe; and an intermediate coupling element (31) mounted at one of its ends on both ends of the cable (30) and fixed at its other end to the device (14). pipe support.   2 device (10) for clamping pipe according to claim 1, characterized in that said intermediate coupling element (31) is mounted on both ends of the cable (30) and is provided at its outer end with a terminal element (32) which can be   assembled to the hose support device (14).   Pipe clamping device (10) according to claim 2, characterized in that the cable (30) is a metal cable.   4 device (10) for clamping pipe according to claim 3, characterized in that the wire rope (30) has a length such that it can be   wrapped around only a part of the perimeter wall   lower phérique of the pipe (12).   Pipe clamping device (10) according to Claim 3, characterized in that the wire rope (30) is of such length that it can be wound at least once around the peripheral wall of the pipe (12).   Hose clamping device (10) according to claim 1, characterized in that the intermediate coupling element (31) comprises: a terminal element (52) mounted on each end of the wire rope (30) and provided with a threaded portion (56) 'and an intermediate assembly (54) including means (66,68,70) threadable to the threaded portion (56) of said end member (52) and a projection (62) for be coupled to the support device (14) of pipe.   Hose clamping device (50) according to claim 6, characterized in that the cable (30) is a metal cable.   8 device (50) for clamping pipe according to claim 7, characterized in that the wire rope (30) has a length such that it can be wound around only a portion of the peripheral wall of the pipe (12).   Pipe clamping device (50) according to claim 7, characterized in that the wire rope (30) is of such a length that it can be wound at least once around the peripheral wall. pipe (12).