CN218761802U - A hydraulic underwater mechanical pipe clip - Google Patents

Abstract

The utility model relates to a hydraulic underwater mechanical pipe clamp, which is provided with a pipe clamp main body, an opening and closing device, a fastening device and a sealing device; the pipe clamp main body is of a cylindrical structure and consists of two semi-cylindrical semi-main bodies, and a bolt sleeve, a top plate, a radial bolt and a hydraulic opening and closing device are arranged outside the semi-main bodies; the inner wall is provided with axial and circumferential sealing strips; two axial ends of the pipe clamp main body are respectively provided with a semicircular tightening flange, and the two tightening flanges are provided with axial fixing bolts, nuts and dust rings; the tightening flange is also provided with a locking bolt, and the bottom of the pipe clamp main body is provided with a base; the pipe clamp main body is also provided with a hoisting device and a sacrificial anode. The utility model is used for the maintenance engineering of pipeline under water, it is more convenient, more work-saving, more efficient advantage to have perfect structure, installation maintenance operation, can conveniently connect shutoff and perfect maintenance with revealing or damaged pipeline fast, guarantees the normal operating of pipeline.

Description

A hydraulic underwater mechanical pipe clip

technical field

The utility model relates to the technical field of maintenance equipment for underwater pipelines, in particular to a hydraulic underwater mechanical pipe clamp, which is an important equipment widely used in quick repair operations for pipelines such as transporting oil and gas.

Background technique

The total length of submarine pipelines laid by China National Offshore Oil Corporation has exceeded 2000km, and many pipelines have been in operation for a long time. Since the 1990s, submarine pipeline damage accidents have increased year by year. This situation not only affects offshore oil and gas production, but also costs tens of millions of dollars to repair. There are many reasons for damage to submarine pipelines, such as cracking, leakage, disconnection, etc. The common ones are material defects, various corrosions, weld defects, and external damage such as anchor dragging. If it is not repaired in time, it will cause major accidents such as production stoppage or environmental pollution.

Pipe clamp is an important equipment in pipeline maintenance or replacement construction, and it plays an important role in connecting pipeline repair pipelines. In pipeline maintenance or construction operations, there are two types of pipe clips that are usually used: glue injection pipe clips and pipe clips without hydraulic cylinders. But there is very big defect in these two forms: 1. it is very time-consuming and laborious to inject glue, also has the risk of uneven glue injection when injecting. ②The pipe clamp without hydraulic cylinder cannot be operated quickly and flexibly, the clamping fixation is poor, and it cannot be conveniently operated remotely or underwater. ③ The sealing parts of the existing pipe clamps are poor in firmness and cannot be sealed better, and the service life is short. Therefore, there is an urgent need to improve the existing pipe clip technology, improve performance and quality, and better meet the needs of a large number of underwater pipeline repair projects.

Utility model content

The purpose of the utility model is to solve the above-mentioned technical problems, and to provide a hydraulic underwater mechanical pipe clip, which adopts a hydraulic opening and closing structure, tight fixing and more efficient sealing. It has the advantages of perfect structure, more convenient installation and maintenance operations, more labor-saving, and more efficient. It can quickly and conveniently connect, block and repair leaked or damaged pipelines, and can ensure the normal operation of pipelines for a longer period of time. run.

In order to achieve the above object, the utility model adopts the following technical solutions:

A hydraulic underwater mechanical pipe clip device, which is provided with a pipe clip main body, an opening and closing device, a fastening device, and a sealing device, and is characterized in that: the pipe clip main body is a cylindrical structure with two ends open, and It consists of two semi-cylindrical semi-mains that are convenient to open and close. On the outer walls of the upper and lower sides of the semi-mains, there are fixed bolt sleeves and top plates for connecting and fixing the two semi-mains. The sleeve is provided with a row of mounting bolts. There are radial screw holes with threads inside, the top plate is set at the inner end of the sleeve, and radial bolts matching the screw holes of the sleeve are provided; There are semi-circular ring-shaped sealing strips respectively, and the two sides of the sealing strips are respectively provided with metal wrapping angles to increase the strength of the sealing strips; an axial sealing strip is respectively provided on the inner side of the upper and lower axial edges of the two halves of the main body; forming a pipe clip The two halves of the main body have the same structure as above and are arranged symmetrically. The two halves of the main body share a set of upper and lower radial bolts for the connection and fixing of the two halves of the main body; The opening and closing device, the opening and closing device is two groups of hydraulic type, which are respectively arranged on the outer walls of the left and right axial ends of the two halves of the main body, each group is provided with a hydraulic cylinder, and the two ends of each hydraulic cylinder: one end of the cylinder body and the outer end of the piston are respectively flexibly connected to the upper end of a leg, and the lower end of each leg is respectively fixed on the upper edge of the outer wall corresponding to the two semi-main bodies. The connection method is: when the piston of the hydraulic cylinder stretches out, the two legs When the piston is retracted, the two legs will be retracted, so as to realize the opening and closing operation of the two halves of the main body from the upper part; in addition, there are two clamping flanges at the two axial ends of the main body of the tube clamp. The two top tight flanges are composed of two semi-circular half-flanges. There are multiple axial screw holes in the semi-circular wall of each half-flange. The number and position of the screw holes are the same as those in the main body of the pipe clamp. The axial screw holes set on the left and right end surfaces correspond to each other, and a corresponding number of axial fixing bolts and nuts are provided. The fixing bolts and nuts penetrate and fix the axial screw holes on the half flange and the main body of the pipe clamp. inside, so that the half flange and the main body of the pipe clamp are fixed together; a semi-annular dust-proof ring is provided on the inner wall of the half flange; the two half flanges at each end of the main body of the pipe clamp have the same structure as above, and are arranged symmetrically ; On the outer walls of the upper and lower joints of the two half-flanges, a locking bolt is respectively provided, and the locking bolt is composed of a bolt seat with holes arranged on the outer walls of the two half-flanges and a through bolt The locking bolt locks and fixes the two half-flanges into a complete top-tightening flange. The above-mentioned structures of the top-tightening flanges at both ends of the main body of the pipe clamp are the same and symmetrically arranged; the main body of the above-mentioned pipe clamp The above-mentioned sleeve, top plate and radial bolts and the tightening flanges at both ends of the main body constitute the fastening device; the above-mentioned annular sealing strip, axial sealing strip and dust ring constitute the sealing device.

The utility model further implements, perfects and the supplementary scheme of optimization is:

A pressure test hole and a pressure gauge for testing the internal pressure and sealing effect of the pipe clamp main body are arranged on the side wall of the pipe clamp main body.

A locating pin is arranged on the merged contact surface of the two half-flanges of the top-tightening flange. The groove and the protrusion should fit together to ensure that the two half-flanges are accurately merged and fixed.

There is also a T-shaped bolt on the sleeve on the outer wall of the main body of the pipe clamp. The T-shaped bolt vertically extends into the threaded hole on the sleeve, and its lower end is pressed against the radial bolt, and it is stuck or released. Radial bolts, lock them before the radial bolts are tightened to prevent the radial bolts from falling out.

A sacrificial anode is provided on the outer wall of the main body of the tube card to prolong the service life of the tube card.

A hoisting device consisting of hoisting rings is provided on the outer wall of the main body of the pipe clamp.

At the bottom of the clamping flange, a fixing seat for integrally fixing the pipe clip is provided.

The working principle of the utility model: firstly, according to the diameter of the pipeline to be repaired and the length of the damaged position, select a pipe clip with a suitable diameter and axial length. It is necessary to completely cover the damaged part of the pipeline. Then use the lifting device to wrap the pipe clip on the repaired part of the pipe and keep it concentric with the pipe. Through the hydraulic opening and closing device and the use of positioning pins, the main body can be more accurately closed to an accurate state. By turning the T-shaped bolts, the locked radial bolts are loosened, and then the radial bolts on both sides are tightened to push the bolt sleeve and the top plate to complete the connection of the main body of the pipe clamp. Tighten the radial bolts and at the same time make the axial sealing strip complete the axial sealing. Tighten the axial ends of the main body of the pipe clamp and tighten the axial bolts and nuts of the flange. The fastening flange is closely connected with the main body of the pipe clamp, so that the circumferential sealing strips on both sides of the main body are compressed and deformed, forming extrusion with the pipe. , to complete the ring to seal action. The metal corner sealing strip protects the sealing strip from being cut. The bottom fixing device is convenient for placing the pipe clips. After the above operations are completed, the pressure test is carried out through the pressure test device to check the sealing performance. Sacrificial anodes can increase the life of the tube card. The dustproof ring can effectively prevent the entry of dust and sand from affecting the sealing of the pipe clamp.

The beneficial effect of a hydraulic underwater mechanical pipe clamp of the utility model:

1. Multiple split and block designs, easy to manufacture, convenient to store and transport, and low cost.

2. The design of fastening parts is perfect, the overall combination of pipe clips is firm, and the repair quality is good.

3. The design of sealing parts is reasonable, and the sealing effect is good, which ensures the perfection of pipeline maintenance.

4. Equipped with a hydraulic opening and closing device with reasonable structural design, it is easy to operate and high in efficiency, and can realize remote and automatic control operation through hydraulic pipelines. Save manpower and material resources, high maintenance efficiency;

5. The sealing strip with metal corners is used to prevent the sealing strip from being cut off and affect the sealing effect and service life;

6. The use of sacrificial anodes greatly increases the life of the pipe clamp; the use of dust-proof rings can prevent the entry of sand and dust and affect the sealing. The design of the entire pipe clamp structure is well-designed and perfect.

Description of drawings

Fig. 1 is a three-dimensional structure schematic diagram of the present utility model.

Fig. 2 is a schematic view of the axial section structure of the utility model.

Fig. 3 is a schematic diagram of the three-dimensional structure of the utility model in axial section.

Fig. 4 is a schematic diagram of an axially sectional three-dimensional exploded structure of the present invention.

FIG. 5 is a schematic diagram of an enlarged structure of part A in FIG. 4 .

Fig. 6 is a schematic diagram of the end face structure of the utility model.

Detailed ways

Below in conjunction with accompanying drawing, a kind of hydraulic type underwater mechanical pipe clamp of the utility model is described.

Embodiment: Referring to the accompanying drawings, a hydraulic underwater mechanical pipe clamp, the present embodiment is a mechanical pipe clamp for repairing a submarine oil pipeline, the external diameter of the oil pipeline is 60cm, and the internal diameter of the pipe clamp in this embodiment is 60.2cm. There are pipe clip main body, opening and closing device, fastening device and sealing device. All metal parts are made of tool steel, and the seals are made of high-quality wear-resistant rubber. The main body of the pipe clamp is a cylindrical structure with openings at both ends. The main body is composed of two semi-cylindrical semi-main bodies 8, and the outer walls of the upper and lower sides of the semi-main body are fixedly provided with two semi-main bodies for connection and fixing. Bolt sleeve 4 and top plate 12, this sleeve is provided with the radial threaded hole 11 of a row of 6 installation bolts, the top plate is located at the inner end of the sleeve, and is provided with the screw hole corresponding to the sleeve. Matching 6 radial bolts 9; on the left and right circumferential edges of the inner walls of the two halves of the main body, semicircular annular sealing strips 14 are respectively provided, the sealing strips are provided with 3 parallel strips, and the two sides of the sealing strips are respectively provided with additional The stainless steel sheet wrapping angle 13 of sealing strip intensity; Also be provided with an axial sealing strip 15 on the inner side of the upper and lower axial edges of two halves of the main body respectively; The half main bodies share a set of upper and lower radial bolts, which are used to connect and fix the two half main bodies; the opening and closing device is provided on the outer wall of the axial upper edge of the two half main bodies, and the opening and closing device is two sets of hydraulic pressure. Type, respectively set on the outer walls of the left and right axial ends of the two halves of the main body, each group is provided with a hydraulic cylinder 1, and the two ends of each hydraulic cylinder: one end of the cylinder body and the outer end of the piston, are respectively movably connected to one leg 2 The upper end and the lower end of each leg are respectively fixed on the upper edge of the corresponding outer wall of the two semi-main bodies. The connection method is: when the piston of the hydraulic cylinder stretches out, push the two legs apart, and when the piston retracts inward, push the two legs apart. The legs are retracted, so as to realize the opening and closing operation of the two halves of the main body from the upper part; in addition, there are two tightening flanges 6 at the axial ends of the main body of the pipe clamp, and the two tightening flanges are two semicircular It is composed of circular half-flanges, and each half-flange has 9 axial screw holes in the semi-circular wall. Corresponding, and be provided with 9 fixing bolts and nuts 5, the fixing bolts and nuts penetrate and be fixed in the axial screw holes on the half flange and the main body of the pipe clamp, thereby fixing the half flange and the main body of the pipe clamp on the Together; on the inner wall of the half-flange, a half-ring dustproof ring 17 is provided; the two half-flanges at each end of the main body of the pipe clamp have the same structure as above, and are arranged symmetrically; on the two half-flanges, The outer wall at the lower seam is respectively provided with a locking bolt 16, which is composed of a bolt seat with holes arranged on the outer walls of the two half flanges and a bolt rod passing through the bolt seat. The two half-flanges are locked and fixed to form a complete top-tightening flange. The above-mentioned structures of the top-tightening flanges at both ends of the main body of the pipe clamp are the same and arranged symmetrically; the sleeve, top plate and radial bolts on the main body of the above-mentioned pipe clamp and The tightening flanges at both ends of the main body constitute the fastening device; the above-mentioned annular sealing strip, axial sealing strip and dust-proof ring constitute the sealing device.

In addition, a pressure test hole 10 and a pressure gauge for testing the internal pressure and sealing effect of the pipe clamp main body are provided on the side wall of the pipe clamp main body. A locating pin 20 is arranged on the merging contact surface of the two half-flanges of the top-tightening flange, and the locating pin is composed of a groove and a protrusion that coincide with each other. After the two half-flanges are combined, the The groove and the protrusion should match each other to ensure that the two half-flanges are accurately merged and fixed. T-shaped bolts 18 are also arranged on the sleeve on the outer wall of the main body of the pipe clamp. The T-shaped bolts extend vertically into the threaded holes on the sleeve, and their lower ends are pushed against the radial bolts to clamp or Release the radial bolts and lock them before the radial bolts are tightened to prevent the radial bolts from falling out. Three sacrificial anodes 19 are provided on the outer wall of the main body of the tube card to prolong the service life of the tube card. A hoisting device 3 composed of two hoisting rings is arranged on the outer wall of the main body of the pipe clamp. At the bottom of the main body of the pipe clip, a fixing seat 7 for integrally fixing the pipe clip is provided.

In the operation of this embodiment, the hydraulic oil pipe is used to inject hydraulic oil into the hydraulic oil cylinder, and the multi-block components of the pipe clamp: the connection and fastening operations of the two semi-main components forming the main body and the four components forming two tight flanges are smooth. Operated by underwater robots, the entire pipeline repair operation process is fast and efficient, and the repair quality is high.

It should be pointed out that on the basis of the basic structure of the utility model, some similar changes and improved technical solutions can also be made, but all should be within the scope of protection of this patent, and its products should be regarded as infringing products.

Claims (7)

1. The utility model provides a fluid pressure type is machinery pipe strap under water, is equipped with pipe strap main part, device, fastener, sealing device that open and shut, its characterized in that: the pipe clamp main body is of a cylindrical structure with openings at two ends, the main body is composed of two semi-cylindrical semi-main bodies (8) which are convenient to open and close, two bolt sleeves (4) and a top plate (12) which are used for connecting and fixing the semi-main bodies are fixedly arranged on the outer walls of the upper side and the lower side of the semi-main bodies, the sleeves are provided with a row of radial screw holes (11) which are provided with mounting bolts and are internally provided with threads, and the top plate is arranged at the inner end of the sleeve and is provided with radial bolts (9) matched with the screw holes of the sleeves; the left and right circumferential edges of the inner walls of the two half main bodies are respectively provided with a semicircular annular sealing strip (14), and the two side edges of the sealing strip are respectively provided with a metal wrap angle (13) for increasing the strength of the sealing strip; the inner sides of the upper and lower axial edges of the two half main bodies are respectively provided with an axial sealing strip (15); the two half main bodies forming the pipe clamp main body have the same structure and are symmetrically arranged, and the two half main bodies share a set of upper and lower radial bolts for connecting and fixing the two half main bodies; be equipped with on the outer wall at the axial of two halves main part border the device that opens and shuts, the device that should open and shut be two sets of fluid pressures, establish respectively on the axial of two halves main part about both ends outer wall, every group is equipped with a pneumatic cylinder (1), the both ends of every pneumatic cylinder: cylinder body one end and piston outer end, the upper end of landing leg (2) of swing joint respectively, the lower extreme of every landing leg is fixed respectively on the border on the outer wall that two half main parts correspond, and the connected mode is: when the piston of the hydraulic cylinder extends outwards, the two support legs are pushed away, and when the piston retracts inwards, the two support legs are retracted, so that the two half main bodies can be opened and closed from the upper parts; in addition, two axial ends of the pipe clamp main body are respectively provided with a jacking flange (6), the two jacking flanges are formed by two semicircular semi-flanges, the semicircular wall of each semi-flange is internally provided with a plurality of axial screw holes, the number and the positions of the screw holes correspond to the axial screw holes arranged on the left end surface and the right end surface of the pipe clamp main body, and the pipe clamp main body is provided with a corresponding number of axial fixing bolts and nuts (5), and the fixing bolts and the nuts penetrate into and are fixed in the axial screw holes on the semi-flanges and the pipe clamp main body, so that the semi-flanges and the pipe clamp main body are fixed together; a semi-annular dustproof ring (17) is arranged on the inner wall of the semi-flange; the two half flanges at each end of the pipe clamp main body have the same structure and are symmetrically arranged; the outer walls of the upper joint and the lower joint of the two half flanges are respectively provided with a locking bolt (16), the locking bolts are composed of bolt seats with holes arranged on the outer walls of the two half flanges and bolt rods penetrating through the bolt seats, the locking bolts lock and fix the two half flanges into a complete tightening flange, and the tightening flanges at the two ends of the pipe clamp main body have the same structure and are symmetrically arranged; the sleeve, the top plate, the radial bolt and the tightening flanges at the two ends of the main body form the fastening device; the annular sealing strip, the axial sealing strip and the dustproof ring form the sealing device.

2. The mechanical pipe clamp according to claim 1, wherein: and a pressure test hole (10) for testing the pressure and sealing effect in the pipe clamp main body and a pressure gauge are arranged on the side wall of the pipe clamp main body.

3. The mechanical pipe clamp according to claim 1, wherein: and after the two half flanges are combined, the groove and the lug are matched with each other to ensure that the two half flanges are accurately combined and fixed.

4. The mechanical pipe clamp according to claim 1, wherein: and a T-shaped bolt (18) is also arranged on the sleeve on the outer wall of the pipe clamp main body, vertically extends into the threaded hole on the sleeve, and the lower end of the T-shaped bolt is propped against the radial bolt to clamp or release the radial bolt and lock the radial bolt before the radial bolt is screwed and fixed so as to prevent the radial bolt from falling out.

5. The mechanical pipe clamp according to claim 1, wherein: and a sacrificial anode (19) for prolonging the service life of the pipe clamp is arranged on the outer wall of the pipe clamp main body.

6. The mechanical pipe clamp according to claim 1, wherein: and a hoisting device (3) consisting of hoisting rings is arranged on the outer wall of the pipe clamp main body.

7. The mechanical pipe clamp according to claim 1, wherein: the bottom of the pipe clamp main body is provided with a fixed seat (7) for integrally fixing the pipe clamp.

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