Special hydraulic test blocking plate for steel skeleton composite pipe

Abstract

The utility model discloses a special water pressure test blocking plate for a steel skeleton composite pipe, which comprises a steel skeleton composite pipe body with a pipe wall thickening section at the end part, and a blocking plate for blocking the end part of the steel skeleton composite pipe body is arranged at the end part, close to the thickening section, of the steel skeleton composite pipe body. The peripheral face of the steel skeleton composite pipe body is sleeved with a locking sleeve piece making contact with the thickening section, and the locking sleeve piece and the blocking plate are connected through a plurality of fastening sleeve pieces. The tool is simple in structure, fast to manufacture and convenient to use, the tool can be recycled, the blocking plate can be fixed to the end of the steel skeleton composite pipe body through mutual matching of the locking sleeve piece and the fastening sleeve piece, and meanwhile follow-up replacement of the blocking plate is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of steam turbine installation in thermal power plants, and particularly relates to a special hydrostatic test plug for steel skeleton composite pipes. Background Technique

[0002] In recent years, the construction period of steam turbine installation work in thermal power generation construction projects has become increasingly tight, while the requirements for progress and quality have become higher and higher. During the process of meeting standards and striving for excellence, more and more attention is paid to fine construction, which puts higher and higher construction requirements on on-site operators. It forces construction workers to complete construction tasks in a timely and effective manner on the premise of safety and compliance. Since the hydrostatic test of steel skeleton composite pipes is an essential process in power station steam turbine installation, it takes a long time and consumes a lot of materials. Therefore, it is necessary to design a special hydrostatic test plug for steel skeleton composite pipes, which can not only reduce labor and material consumption, but also be recycled and reused after the project is completed, so as to achieve the purpose of reducing construction costs. Content of the Utility Model

[0003] The purpose of the utility model is to provide a special hydrostatic test plug for steel skeleton composite pipes to solve the problems raised in the above background technique.

[0004] To achieve the above purpose, the utility model provides the following technical solution: A special hydrostatic test plug for steel skeleton composite pipes, including a steel skeleton composite pipe body with a wall thickness thickening section at its end. A plug for blocking the end of the steel skeleton composite pipe body is provided at the end of the steel skeleton composite pipe body adjacent to the thickening section. A locking kit in contact with the thickening section is sleeved on the outer peripheral surface of the steel skeleton composite pipe body, and the locking kit and the plug are connected by a plurality of fastening kits.

[0005] As a further scheme of the utility model: A plurality of round holes are arranged along the annular edge of the end face of the plug, and a water-stop rubber gasket for connecting with the end face of the steel skeleton composite pipe body is provided on the end face of the plug.

[0006] As a further scheme of the utility model: The locking kit includes a pipe clamp, and the pipe clamp includes an upper clamping ring and a lower clamping ring symmetrically arranged on the outer peripheral surface of the steel skeleton composite pipe body. The upper clamping ring and the lower clamping ring are fixed on the outer peripheral surface of the steel skeleton composite pipe body by fasteners.

[0007] As a further scheme of the utility model: A plurality of through holes are arranged along the arc edge on the end faces of the upper clamping ring and the lower clamping ring, and through holes for the fasteners to pass through are opened on the upper clamping ring and the lower clamping ring.

[0008] As a further scheme of the utility model: The fastening kit includes a connecting bolt passing through the round hole, and one end of the connecting bolt sequentially passes through the round hole, the through hole from one side of the plug and is threadedly connected with a nut.

[0009] As a further solution of the present utility model: the length of the connecting bolt is greater than the length of the thickened section.

[0010] As a further solution of the present utility model: a step is formed at the initial part of the thickened section of the steel skeleton composite pipe body.

[0011] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0012] The overall structure of this application is simple, quick to manufacture, convenient to use, and the tool can be recycled. Through the mutual cooperation of the locking kit and the fastening kit, the plug plate can be fixed at the end of the steel skeleton composite pipe body, and at the same time, it is convenient to replace the plug plate later, avoiding fixing the plug plate at the end of the steel skeleton composite pipe body by hot melting, which takes a long time in the installation process and is rather cumbersome in the removal process. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is the overall structure schematic diagram of the present utility model;

[0014] Figure 2 is the structure schematic diagram of the fastening kit of the present utility model;

[0015] Figure 3 is the structure schematic diagram of the steel skeleton composite pipe body of the present utility model;

[0016] Figure 4 is the pipe clamp schematic diagram of the present utility model;

[0017] Figure 5 is the overall structure schematic diagram of the plug plate of the present utility model;

[0018] In the figure: 1, steel skeleton composite pipe body; 2, plug plate; 21, round hole; 22, water stop rubber gasket; 3, pipe clamp; 31, upper clamping ring; 32, lower clamping ring; 33, through hole; 34, through hole; 4, bolt; 5, threaded sleeve; 6, connecting bolt; 7, nut. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0020] Taking the hydrostatic test of steel-skeleton composite pipes in the plant area of a 1000MW thermal power construction project as an example, compared with using traditional hydrostatic test blind plates for the hydrostatic test of steel-skeleton composite pipes, this application can save about 100 traditional hydrostatic test blind plates, save about 200 man-days of labor, and the tools can be recycled to avoid waste.

[0021] Please refer to Figures 1-5 , in an embodiment of the present utility model, a special hydrostatic test blind plate for steel-skeleton composite pipes includes a steel-skeleton composite pipe body 1 with a wall thickness thickening section at its end. A blind plate 2 for sealing the end of the steel-skeleton composite pipe body 1 is provided at the end of the steel-skeleton composite pipe body 1 adjacent to the thickening section. A locking kit in contact with the thickening section is sleeved on the outer peripheral surface of the steel-skeleton composite pipe body 1, and the locking kit and the blind plate 2 are connected by a plurality of fastening kits.

[0022] Specifically, the blind plate 2 is made of steel. During the test, the water pressure is relatively high, and the blind plate 2 cannot be welded to the steel-skeleton composite pipe body 1. Under various adverse factors such as increasing the connection strength, by cleverly using the thickening section at the end of the steel-skeleton composite pipe body 1, the hydrostatic test blind plate is tightly buckled at the end of the steel-skeleton composite pipe to ensure the normal progress of the hydrostatic test of the steel-skeleton composite pipe. Moreover, the blind plate 2 is convenient for installation and disassembly, can be reused, and saves material costs. During the assembly process of the blind plate 2, the locking kit is first locked on the outer peripheral surface of the steel-skeleton composite pipe body 1, and then a plurality of fastening kits are passed through 2 and the locking kit and fastened, so that the position of the blind plate 2 seals the end of the steel-skeleton composite pipe body 1.

[0023] Please refer to Figure 5 , in one embodiment, in this embodiment, preferably, a plurality of round holes 21 are arranged along the annular edge of the end face of the blind plate 2. A water-stop rubber gasket 22 for connecting with the end face of the steel-skeleton composite pipe body 1 is provided on the end face of the blind plate 2. Further, the plurality of round holes 21 on the blind plate 2 are evenly distributed, and the inside of the round holes 21 is for the fastening kit to pass through. At the same time, the water-stop rubber gasket 22 is arranged between the steel-skeleton composite pipe body 1 and the blind plate 2, which can ensure that there is no water leakage at the connection during the hydrostatic test.

[0024] Please refer to Figures 3-4, in one embodiment, in this embodiment, preferably, the locking kit includes a pipe clamp 3. The pipe clamp 3 is a flange-type steel pipe clamp, and the flange-type steel pipe clamp can be made of Q235B sheet. The pipe clamp 3 includes an upper clamping ring 31 and a lower clamping ring 32 symmetrically arranged on the outer peripheral surface of the steel skeleton composite pipe body 1. The upper clamping ring 31 and the lower clamping ring 32 are fixed on the outer peripheral surface of the steel skeleton composite pipe body 1 through fasteners. A plurality of through holes 33 are arranged along the arc edges on the end faces of the upper clamping ring 31 and the lower clamping ring 32. The ends of the fastening kit can pass through the plurality of through holes 33 to fix the positions of the pipe clamp 3 and the plug plate 2. The inner diameters of the upper clamping ring 31 and the lower clamping ring 32 are adapted to the outer diameter of the steel skeleton composite pipe body 1. When the two are combined, they just clamp on the outer peripheral surface of the steel skeleton composite pipe body 1. Through holes 34 for fasteners to pass through are provided on both the upper clamping ring 31 and the lower clamping ring 32. Secondly, platforms extend outward at both ends of the upper clamping ring 31 and the lower clamping ring 32, and the through holes 34 are vertically arranged on the platforms to facilitate the fasteners to pass through the upper clamping ring 31 and the lower clamping ring 32 to stably connect the upper clamping ring 31 and the lower clamping ring 32 together.

[0025] Specifically, the fastener includes a bolt 4. The end of the bolt 4 can pass through the lower clamping ring 32 from the upper clamping ring 31 or pass through the upper clamping ring 31 from the lower clamping ring 32. Secondly, a threaded sleeve 5 is installed on the passing end of the bolt 4. The disassembly and assembly of the upper clamping ring 31 and the lower clamping ring 32 are realized by rotating the threaded sleeve 5. When the threaded sleeve 5 is rotated, the threaded sleeve 5 is rotated off the bolt 4 to remove the upper clamping ring 31 and the lower clamping ring 32. When the threaded sleeve 5 is rotated to contact the surface of the upper clamping ring 31 or the lower clamping ring 32, the upper clamping ring 31 and the lower clamping ring 32 can be tightly connected together.

[0026] Please refer to Figures 1-5 , in one embodiment, in this embodiment, preferably, the fastening kit includes a connecting bolt 6 inserted into the round hole 21. One end of the connecting bolt 6 sequentially passes through the round hole 21 and the through hole 33 from one side of the plug plate 2 and is threadedly connected with a nut 7. Further, the threaded end of the connecting bolt 6 sequentially passes through the round hole 21 and the through hole 33 and a nut 7 is assembled at its end. By rotating the nut 7 to tighten the distance from the other end of the connecting bolt 6, the side wall of the pipe clamp 3 is clamped at the step formed at the initial part of the thickening section to ensure that the position of the plug plate 2 does not loosen.

[0027] Please refer to Figures 1-3 , in one embodiment, in this embodiment, preferably, the length of the connecting bolt 6 is greater than the length of the thickening section, so that the pipe clamp 3 can be fixed at the initial position of the thickening section.

[0028] Working principle and usage process of the utility model: First, put the upper clamping ring 31 and the lower clamping ring 32 on the initial position of the thickened section of the steel skeleton composite pipe body 1. Then, under the action of the bolt 4 and the threaded sleeve 5, the upper clamping ring 31 and the lower clamping ring 32 are tightened to fix their positions. Next, the threaded end of the connecting bolt 6 is sequentially passed through the round hole 21 and the through hole 33, and a nut 7 is assembled at its end. By rotating the nut 7, the distance from the other end of the connecting bolt 6 is tightened. In this way, the plug plate 2 presses the water stop rubber gasket 22 to be tightly connected with the steel skeleton composite pipe body 1, ensuring that there is no water leakage during the test water pressure. It is convenient to use, and the tool can be recycled to avoid waste.

[0029] Although this specification is described according to the embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0030] Therefore, the above description is only the preferred embodiment of the present application, and is not used to limit the scope of implementation of the present application; that is, all equivalent transformations made according to the scope of the claims of the present application are within the protection scope of the claims of the present application.

Claims

1. A special hydrostatic test plug for steel skeleton composite pipes, characterized in that, It includes a steel skeleton composite pipe body (1) with a thickened pipe wall section at its end. A plug plate (2) for blocking the end of the steel skeleton composite pipe body (1) is provided at the end of the steel skeleton composite pipe body (1) near the thickened section. A locking kit in contact with the thickened section is sleeved on the outer peripheral surface of the steel skeleton composite pipe body (1), and the locking kit and the plug plate (2) are connected by a plurality of fastening kits.

2. The special hydrostatic test plug for steel skeleton composite pipes according to claim 1, characterized in that, A plurality of round holes (21) are arranged along the circumferential edge of the end face of the plug plate (2), and a water stop rubber gasket (22) connected to the end face of the steel skeleton composite pipe body (1) is provided on the end face of the plug plate (2).

3. The special hydrostatic test plug for steel skeleton composite pipes according to claim 2, characterized in that, The locking kit includes a pipe clamp (3). The pipe clamp (3) includes an upper clamping ring (31) and a lower clamping ring (32) symmetrically arranged on the outer peripheral surface of the steel skeleton composite pipe body (1), and the upper clamping ring (31) and the lower clamping ring (32) are fixed on the outer peripheral surface of the steel skeleton composite pipe body (1) by fasteners.

4. The special hydrostatic test plug for steel skeleton composite pipes according to claim 3, characterized in that, A plurality of through holes (33) are arranged along the arc edge on the end faces of the upper clamping ring (31) and the lower clamping ring (32), and through holes (34) for the fasteners to pass through are formed on both the upper clamping ring (31) and the lower clamping ring (32).

5. The special hydrostatic test plug for steel skeleton composite pipes according to claim 4, characterized in that, The fastening kit includes a connecting bolt (6) inserted into the round hole (21), and one end of the connecting bolt (6) sequentially passes through the round hole (21) and the through hole (33) from one side of the plug plate (2) and is threadedly connected with a nut (7).

6. The special hydrostatic test plug for steel skeleton composite pipes according to claim 5, characterized in that, The length of the connecting bolt (6) is greater than the length of the thickened section.

7. The special hydrostatic test plug for steel skeleton composite pipes according to claim 1, wherein A step is formed at the initial part of the thickened section of the steel skeleton composite pipe body (1).

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