CN212722407U - Hydraulic pressure test device - Google Patents

Abstract

The utility model relates to a hydrostatic test device. The utility model aims at providing a hydrostatic test device. The technical scheme of the utility model is that: the utility model provides a hydrostatic test device for carry out hydrostatic test to cable junction structure, its characterized in that: have and be used for placing cable connection structure's experimental cavity, the round hole that can supply cable on the cable connection structure to wear out is seted up at the both ends of experimental cavity, and the experimental cavity outside corresponds the round hole and is fixed with circular rubber circle, and circular rubber circle center is equipped with the centre bore that can supply the cable to pass that corresponds with the round hole, install manometer and experimental ball valve on the experimental cavity. The utility model is suitable for a be located under water, and the cable intermediate head need bear the power transmission and distribution field of higher water pressure (P is less than or equal to 2.5 MPa).

Description

Hydraulic pressure test device

Technical Field

The utility model relates to a hydrostatic test device. The water pressure-resistant cable is suitable for the field of power transmission and distribution which is located underwater and the cable intermediate joint needs to bear higher water pressure (P is less than or equal to 2.5 MPa).

Background

In recent years, with the explosion of global industry, the field of underwater power transmission and distribution is rapidly developed. However, in the field of cable power transmission and distribution in deep water environment, the problem that the intermediate joint of the cable cannot bear high water pressure exists. Therefore, when cables are laid in the deep water environment, the whole cable is usually adopted to avoid the occurrence of a cable intermediate joint; when the cable laying distance is long, if the whole cable is adopted, certain difficulty exists in the links of cable production, transportation, laying and the like. In addition, the existing cable intermediate joint is also lack of a testing device which is simple to implement and has good pressure maintaining performance to carry out a hydraulic test.

Disclosure of Invention

The to-be-solved technical problem of the utility model is: in view of the above-mentioned problems, a hydrostatic test apparatus is provided.

The utility model adopts the technical proposal that: the utility model provides a hydrostatic test device for carry out hydrostatic test to cable junction structure, its characterized in that: have and be used for placing cable connection structure's experimental cavity, the round hole that can supply cable on the cable connection structure to wear out is seted up at the both ends of experimental cavity, and the experimental cavity outside corresponds the round hole and is fixed with circular rubber circle, and circular rubber circle center is equipped with the centre bore that can supply the cable to pass that corresponds with the round hole, install manometer and experimental ball valve on the experimental cavity.

The test chamber is provided with a large-caliber steel pipe, a flange connected with two ends of the large-caliber steel pipe and a flange cover.

A small-caliber steel pipe surrounding the round hole is fixed on the outer side of the test chamber, and the round rubber ring is positioned in the small-caliber steel pipe;

the outer end of the small-caliber steel pipe is provided with a pressing plate, a plurality of single-head screws are evenly arranged on the pressing plate in the circumferential direction, and the single-head screws are inserted into the small-caliber steel pipe and tightly press the outer edge of the circular rubber ring in the small-caliber steel pipe.

The utility model has the advantages that: the utility model discloses a hydrostatic test device simple structure, convenient to use, reliable, practicality are strong, compress tightly circular rubber circle outer fringe through clamp plate cooperation single-end screw rod to further compress tightly the clearance between circular rubber circle and the cable.

Drawings

Fig. 1 is a schematic structural view of a cable connection structure in an embodiment.

Fig. 2 is a schematic structural diagram of a waterproof pressure-bearing device in the embodiment.

Fig. 3 is a schematic sectional view of a waterproof pressure-bearing device in the embodiment.

FIG. 4 is a schematic structural view of a hydrostatic test apparatus according to an embodiment.

Detailed Description

This embodiment is for providing a cable junction structure, and two cables 1 link to each other through cable intermediate head 6, correspond this cable intermediate head 6 and be equipped with the waterproof pressure-bearing device of cable intermediate head 6, and this waterproof pressure-bearing device wraps cable intermediate head 6.

The waterproof pressure-bearing device in this example has a waterproof pressure-bearing shell which is divided into an upper half shell 301 and a lower half shell 302 which are symmetrical up and down in the diameter direction, and the upper half shell 301 and the lower half shell 302 are fixedly connected through a plurality of bolts 10.

In the embodiment, the two ends of the waterproof pressure-bearing shell in the length direction are provided with the inlet and outlet holes, and the shape and the size of the inlet and outlet holes are matched with the section of the cable 1. The waterproof pressure-bearing shell is in a structural form that the middle is large and the two ends are small in the length direction, and the diameter of the waterproof pressure-bearing shell from the middle to the two ends in the length direction is gradually reduced until the waterproof pressure-bearing shell is matched with the diameter of the cable 1.

In this embodiment, the upper half shell 301 of the waterproof pressure-bearing shell is provided with an exhaust hole 5 and a glue filling hole 7 which are communicated with the inside of the shell, and the exhaust hole 5 and the glue filling hole 7 are provided with hole covers 12.

In the embodiment, the waterproof sealant 4 can be filled into the waterproof pressure-bearing shell through the sealant filling hole 7, air in the waterproof pressure-bearing shell is discharged through the exhaust hole 5 during filling, and the waterproof sealant 4 is filled in the waterproof pressure-bearing shell and is solidified to cover the exhaust hole 5 and the sealant filling hole 7 through the hole cover 12.

In order to prevent the waterproof sealant 4 from overflowing from the waterproof pressure-bearing shell during the pouring operation of the waterproof sealant 4, a rubber plate 8 is disposed between the contact surfaces of the upper half shell 301 and the lower half shell 302 in this embodiment, and an O-shaped rubber ring 2 is sleeved on the cable 1 at a position corresponding to the inlet and outlet of the waterproof pressure-bearing shell.

The installation method of the cable 1 connection structure in this embodiment is as follows:

sleeving an O-shaped rubber ring 2 on the connecting ends of the two cables 1;

the connecting ends of the two cables 1 are connected through a cable intermediate joint 6;

an upper half shell 301 and a lower half shell 302 are installed corresponding to the connecting part of two cables 1, the upper half shell 301 and the lower half shell 302 are spliced to form a waterproof pressure-bearing shell for wrapping a cable intermediate joint 6, and the two cables 1 connected with the cable intermediate joint 6 respectively extend out of inlet and outlet holes at two ends of the waterproof pressure-bearing shell; meanwhile, the position of an O-shaped rubber ring 2 sleeved on the cable 1 is adjusted to a position corresponding to an upper outlet hole of the waterproof pressure-bearing shell;

the waterproof sealant 4 is filled into the waterproof pressure-bearing shell through a sealant filling hole 7 on the waterproof pressure-bearing shell;

after the waterproof sealant 4 is solidified, the hole cover 12 is used for covering the glue filling hole 7 and the exhaust hole 5 on the waterproof pressure-bearing shell.

The present embodiment is a hydrostatic test apparatus capable of performing a hydrostatic test on the cable connection structure in the present embodiment, and the hydrostatic test apparatus includes a test chamber formed by a large-diameter steel pipe 16 and a flange cover 18, wherein flanges 17 are formed at both ends of the large-diameter steel pipe 16 and are connected to the flange cover 18 through the flanges 17, and two connection holes are formed in an upper portion of the large-diameter steel pipe 16 for installing a pressure gauge 14 and a test ball valve 15. The center of the flange cover 18 is provided with a round hole, the outer side surface of the flange cover 18 is fixedly welded with a small-caliber steel pipe 20 surrounding the round hole, two circular rubber rings 19 are arranged in the small-caliber steel pipe 20 and close to the flange cover 18, and the center hole of each circular rubber ring 19 corresponds to the round hole in the flange cover 18.

In the embodiment, the outer end of the small-caliber steel pipe 20 is provided with a pressing plate 21, the pressing plate 21 is uniformly provided with a plurality of screw holes which are encircled into a circle, single-head screws 22 are arranged in the screw holes, the pressing plate 21 is inserted into the small-caliber steel pipe 20 through the single-head screws 22 on the pressing plate, the single-head screws 22 are uniformly distributed around the circular rubber ring 19 and press the outer edge of the circular rubber ring 19, and therefore, the gap between the circular rubber ring 19 and the cable 1 is further pressed.

The mounting method of the test device in this embodiment is as follows:

the connecting structure of the cable 1 is arranged in a large-caliber steel pipe 16;

connecting two ends of the large-caliber steel pipe 16 with flange covers 18 welded with small-caliber steel pipes 20 respectively;

then, the circular rubber ring 19 and the pressing plate 21 are inserted into the cables 1 at two ends of the connecting structure of the cables 1 and then put in place, and the single-end screw 22 on the pressing plate 21 is screwed into the small-caliber steel pipe 20 to a proper length so as to be in contact with the outer edge of the circular rubber ring 19 and tightly press the outer edge of the circular rubber ring 19;

and finally, fixing the pressure gauge 14 and the test ball valve 15 on the top of the large-caliber steel pipe 16.

And (4) performing a hydraulic test, and after the hydraulic test device is manufactured, further screwing the single-head screw 22 to the outer edge of the circular rubber ring 19 so as to tightly contact the two, thereby pressing the circular rubber ring 19 to achieve a sealing effect. And connecting a pressure test pump to the test ball valve 15, starting the pressure test pump to charge pressure water into the hydraulic test device, stopping charging water and maintaining the pressure for a specified time after the pressure shown by the pressure gauge 14 reaches the test pressure, and thus completing the hydraulic test.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (3)

1. The utility model provides a hydrostatic test device for carry out hydrostatic test to cable junction structure, its characterized in that: have and be used for placing cable connection structure's experimental cavity, the round hole that can supply cable on the cable connection structure to wear out is seted up at the both ends of experimental cavity, and the experimental cavity outside corresponds the round hole and is fixed with circular rubber circle, and circular rubber circle center is equipped with the centre bore that can supply the cable to pass that corresponds with the round hole, install pressure mark and experimental ball valve on the experimental cavity.

2. The hydrostatic test apparatus of claim 1, wherein: the test chamber is provided with a large-caliber steel pipe and flange covers connected with two ends of the large-caliber steel pipe.

3. The hydrostatic test apparatus according to claim 1 or 2, wherein: a small-caliber steel pipe surrounding the round hole is fixed on the outer side of the test chamber, and the round rubber ring is arranged in the small-caliber steel pipe;

the outer end of the small-caliber steel pipe is provided with a pressing plate, a plurality of single-head screws are evenly arranged on the pressing plate in the circumferential direction, and the single-head screws are inserted into the small-caliber steel pipe and tightly press the outer edge of the circular rubber ring in the small-caliber steel pipe.

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