CN114131070A - Straight pipe tensioner for high-pressure manifold - Google Patents

Abstract

The invention relates to a straight pipe tensioner for a high-pressure manifold, which comprises a middle shaft, wherein two movable blocks are connected to the middle shaft, a tensioning connecting rod is hinged between the movable blocks, the middle shaft is a double-threaded screw rod, the movable blocks are respectively in threaded connection with two threaded parts of the middle shaft, one end of the middle shaft is connected with a driving shaft, and the driving shaft is connected with a driving motor; one purpose of the invention is that the driving motor drives the double-end screw to rotate, the movable blocks can approach each other to drive the tensioning connecting rod to expand the inner wall of the tensioning pipeline to the periphery, and compared with the method of directly pulling the middle shaft along the axial direction, the end part of the pipeline cannot be overstocked and damaged, and the safety in the use process is greatly improved.

Description

Straight pipe tensioner for high-pressure manifold

Technical Field

The invention relates to the field of pipeline equipment, in particular to a straight pipe tensioner for a high-pressure manifold.

Background

The manifold is a combination formed by a plurality of pipelines which are intersected. The manifold comprises gate valves, pipelines, pipe fittings, pressure gauges, electronic sensing, hydraulic control systems and other fittings. One such is a high pressure manifold.

In the process of processing or installing the high-pressure manifold, the pipeline needs to be clamped, an internal expansion type tensioning mechanism is a typical form of pipeline operation, the main structure of the internal expansion type tensioning mechanism is that a mechanism capable of growing in the pipeline is installed on a middle shaft, and as shown in an invention patent with the publication number of CN102785087A, the middle shaft pulls a movable block to enable tensioning connecting rods on the periphery to expand outwards so as to tension the inner wall of the pipeline and realize the clamping and fixing of the pipeline. However, since one end of the device needs to be clamped to one end of the pipeline and then tightened, the end part of the pipeline wall is easily crushed due to overlarge stress, and the use is inconvenient.

Therefore, a new straight pipe tensioner for a high pressure manifold is needed to solve the above problems.

Disclosure of Invention

The invention aims to solve the problem that the existing straight pipe tensioner for the high-pressure manifold is easy to cause pipeline damage.

According to one aspect of the invention, the straight pipe tensioner for the high-pressure manifold comprises a middle shaft, wherein two movable blocks are connected to the middle shaft, a tensioning connecting rod is hinged between the movable blocks, the middle shaft is a double-threaded screw rod, the movable blocks are respectively in threaded connection with two threaded portions of the middle shaft, one end of the middle shaft is connected with a driving shaft, and the driving shaft is connected with a driving motor.

Through this scheme, driving motor drive double threaded screw rotates, and the movable block can be close to each other thereupon to the drive rises and tightly connects the connecting rod to expand all around and rise the tight pipeline inner wall, compares in direct axial pulling axis along, can not cause the overstock damage to the tip of pipeline, has improved the security in the use greatly.

Preferably, the outer portion of the driving shaft is sleeved with a fixing sleeve, the fixing sleeve is rotatably connected with the driving shaft, and the fixing sleeve is fixedly connected with one of the movable blocks.

Through this scheme, handheld fixed cover can be fixed the position and the rotatory angle of this device, avoids this device to follow driving motor's rotation and follow the commentaries on classics.

Preferably, the drive shaft with the axis passes through the spline and is connected, fixed cover with the movable block passes through the detachable fixed connection of bolt.

Through this scheme, make things convenient for the dismantlement of drive shaft and fixed cover to the maintenance is maintained to the convenience.

Preferably, the tensioning connecting rod comprises end rods on two sides and a tensioning rod in the middle, the end rods are hinged to the tensioning rod, and a tensioning plate is arranged on the outer side of the tensioning rod.

Through this scheme, the area of contact of the setting that rises the tight board of rising can increase with the straight tube inner wall to avoid crowded hindering the pipeline inner wall, further improve the protection effect to the straight tube inner wall.

Preferably, the tensioning plate is arc-shaped and is connected with the tensioning rod through a spherical hinge.

Through this scheme, what curved rises the tight board of rising can be better laminates with the pipeline inner wall, and the mode that the ball pivot is connected moreover can make the shape that rises the tight board adaptation pipeline inner wall that rises, avoids the pipeline inner wall damage that the deviation of angle caused.

The tension device has the technical effects that the structure is simple, and compared with the traditional tension device, the end part and the inner wall of the pipeline can be better protected, so that the use safety is improved.

Other features of the present invention and advantages thereof will become apparent from the following detailed description of exemplary embodiments thereof, which proceeds with reference to the accompanying drawings.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description, serve to explain the principles of the invention.

Fig. 1 is a schematic structural diagram of a position of a tensioner for detecting a high-pressure manifold straight pipe according to an embodiment of the invention.

Fig. 2 is a schematic view of the position structure of the tension link in fig. 1.

Fig. 3 is a side view of the tension link of fig. 2.

Fig. 4 is a schematic view of the position structure of the fixing sleeve and the driving shaft in fig. 1.

Detailed Description

Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that: the relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise.

The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses.

Techniques and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail, but are intended to be considered a part of the specification where appropriate.

In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

Examples

As shown in fig. 1 to 4, the straight pipe tensioner for a high-pressure manifold in this embodiment includes a central shaft 110, two movable blocks 120 are connected to the central shaft 110, a tensioning connecting rod 130 is hinged between the movable blocks 120, the central shaft 110 is a double-threaded screw, the movable blocks 120 are respectively screwed to two threaded portions of the central shaft 110, one end of the central shaft 110 is connected to a driving shaft 141, and the driving shaft 141 is connected to a driving motor (not shown in the drawings).

Through this embodiment, driving motor drive double threaded screw rotates, and movable block 120 can be close to each other thereupon to drive tight connecting rod 130 and expand the tight pipeline 200 inner wall that rises all around, compare in direct axial pulling axis, can not cause overstock damage to the tip of pipeline 200, improved the security in the use greatly.

In this embodiment or other embodiments, a fixing sleeve 142 is sleeved outside the driving shaft 110, the fixing sleeve 142 is rotatably connected to the driving shaft 141, and the fixing sleeve 142 is fixedly connected to one of the movable blocks 120. The handheld fixed sleeve 142 can fix the position and the rotating angle of the device, and the device is prevented from rotating along with the rotation of the driving motor.

In this embodiment or other embodiments, the driving shaft 141 is connected to the middle shaft 110 through a spline, and the fixing sleeve 142 is detachably and fixedly connected to the movable block 120 through a bolt. The disassembly of the driving shaft 141 and the fixing sleeve 142 is facilitated, thereby facilitating the maintenance and repair.

In this embodiment or other embodiments, the tension link 130 includes two end rods 131 and a middle tension rod 132, the end rods 131 are hinged to the tension rod 132, and a tension plate 133 is disposed outside the tension rod 132. The arrangement of the tension plate 133 can increase the contact area with the inner wall of the straight pipe, so as to avoid crushing the inner wall of the pipeline 200, and further improve the protection effect on the inner wall of the straight pipe.

In this embodiment or other embodiments, the tension plate 133 has an arc shape, and the tension plate 133 is connected to the tension rod 132 by a ball hinge. The curved tensioning plate 133 can be better attached to the inner wall of the pipeline 200, and the tensioning plate 133 can adapt to the shape of the inner wall of the pipeline 200 in a spherical hinge connection mode, so that the damage to the inner wall of the pipeline caused by the deviation of the angle is avoided.

The technical effect of this embodiment lies in, this device simple structure, compares in traditional tensioning ware, the security of using is improved to protection pipeline's that can be better tip and inner wall.

Although some specific embodiments of the present invention have been described in detail by way of illustration, it should be understood by those skilled in the art that the above illustration is only for the purpose of illustration and is not intended to limit the scope of the invention. It will be appreciated by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the invention. The scope of the invention is defined by the appended claims.

Claims (5)

1. A straight pipe tensioner for a high-pressure manifold comprises a middle shaft, wherein two movable blocks are connected to the middle shaft, and a tensioning connecting rod is hinged between the movable blocks.

2. The straight pipe tensioner as claimed in claim 1, wherein a fixing sleeve is sleeved on an outer portion of the driving shaft, the fixing sleeve is rotatably connected to the driving shaft, and the fixing sleeve is fixedly connected to one of the movable blocks.

3. The straight pipe tensioner as claimed in claim 2, wherein the driving shaft is connected to the middle shaft by a spline, and the fixing sleeve is detachably fixed to the movable block by a bolt.

4. The straight pipe tensioner as claimed in claim 1, wherein the tension link comprises two end rods and a middle tension rod, the end rods are hinged to the tension rod, and a tension plate is disposed outside the tension rod.

5. The straight pipe tensioner as claimed in claim 4, wherein the tension plate is arc-shaped and is connected to the tension rod via a ball joint.

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