WO2018023821A1

WO2018023821A1 - Hot-cast splicing element

Info

Publication number: WO2018023821A1
Application number: PCT/CN2016/094087
Authority: WO
Inventors: 赵龙
Original assignee: 深圳朝伟达科技有限公司
Priority date: 2016-08-04
Filing date: 2016-08-09
Publication date: 2018-02-08
Also published as: CN106287057A

Abstract

A hot-cast splicing element (A) comprises: a first splicing element (A1) and a second splicing element (A2), wherein, the first splicing element (A1) comprises a first opening (4); a first flange (1), the first flange (1) being of two pairs in the opposite direction and being fixed by screws and nuts (2); a seal (3) installed on an inner wall of the first splicing element (A1) and the second splicing element (A2) for interconnecting the first splicing element (A1) and the second splicing element (A2) in a liquid seal state; a drill (D) that receives an axis of the first opening (4) and strides over an axis of a main line (B) and is finally positioned at or near an axis plane passing through the main line (B), together with the first opening (4) and an intact second flange (6) provided at the outer side of the first opening (4), for movably fixing a shutter device (C). The splicing element can work under any pressure under the condition that the main line does not stop working, and is cost saving.

Description

Hot casting type splicing piece

Technical field

The invention relates to a splicing mechanism, in particular to a hot-cast type branching splicing piece, thereby connecting a branching line to a splicing piece for completing the splicing of the main line.

Background technique

At present, a well-known method for connecting a branch line to a main line containing a fluid is to use a bypass line to connect the two end points of the main line to each other, and to close and remove the two points during the construction process. Between the main line sections, then install a T-line between the two points so that the branch line is connected to the T-line. There are many problems in the technology of the county. For example, the work of the bypass is very large, and the work of the main road needs to be stopped during the connection process, and the excavation work needs to be carried out in a large range, which is time-consuming and labor-intensive. high.

The prior art has three hot-cast branching methods that alleviate the above problems:

(1) The method described in Fig. 1 is suitable for the case where the pressure is low, the connecting member A' having the sliding shutters is mounted on the main line B, and the drilling is performed by the drilling machine of the drilling machine D', thereby connecting to the connecting member A', then close the blinds, use the connecting pipe E' instead of the drilling machine D', the connecting pipe E' connects the branching line E to the connecting piece A', as shown in Figure 2, of course, the method is executed in a certain order Strict requirements on the process, otherwise the pipeline leakage will be higher, the final connection work of the method is large, if the final seal test is carried out under the pressure of the transfer fluid, then it can not be tested, or it is difficult to provide High reliability test results;

(2) The method shown in Fig. 3 is suitable for the case of high pressure, the connecting piece A' has no sliding shutters, and the two-way opening and closing device with strong resistance to pressure, such as the valve C', is used, and FIG. 1 The method is implemented in the same manner and in sequence. The disadvantage of the method is that the valve C' completes the two-way opening and closing function, and is bound to be at the intersection of the nodes, thereby bringing great difficulty to the maintenance of the pipeline;

(3) The method of the present invention is shown in Fig. 4, in which the branching connector OA is installed, including the hole receiving opening O4, And an outlet O5 for connecting the branching lines E, the two openings O4 and O5 having axes that intersect each other at an angle. After the branch line E is connected to the outlet O5, the bore OD is fixed to the bore receiving opening O4 by the louver device C, after which the outer wall of the opposite side of the main line B and the outlet O5 is staged by the drilling apparatus O9 of the drilling machine OD, This establishes the communication between the main line B and the branch line E. Thereafter, the shutter device C is removed and the bore receiving opening O4 is closed. The method can perform the branching communication method in different directions, and at the same time, the airtightness test can be performed using a pressure higher than the flow pressure in the main pipe, but the work of cutting off the outer wall is far from the intersection line of the main line B. a position of the plane, so the stage of initially cutting the front section of the hole O9 is easy to slide out of the plane where the main pipe B is located, and a large force is applied along the side direction, so that the shape of the cut cut is desired Greatly different.

Summary of the invention

It is an object of the present invention to provide a hot-cast type branching splicing member comprising: a first splicing member and a second splicing member mounted on a periphery of a main line, the first splicing member including a first opening for receiving and mounting the drill bit Passing through the opening and closing shutter device, thereby allowing the drill bit to move to and from the main line, the second splicing member includes a second outlet connected to the branch line; the first flange, the first flange is two pairs In the opposite direction, fixed by screws and nuts; the sealing member is mounted on the inner walls of the first and second splicing members for interconnecting the first and second splicing members in a liquid sealed state; the drill bit receives the first The axis of the opening and across the axis of the main line, finally positioned on or near the plane of the axis passing through the main line, together with the outer side of the first opening and the first opening providing a second flange for movement Fixed shutter device.

Preferably, the first splicing member and the second splicing member are welded together without using the first flange.

Preferably, the ends of the first splicing member and the second splicing member are tightly welded to the main line without using the sealing member.

Preferably, the first opening has an axis in or near the plane that passes through the axis of the main line.

Preferably, the second outlet has an axis opposite to the axis of the first opening received by the drill bit, the The inner diameter of the two outlets is equal or substantially equal to the main line and the branch line, and the axis of the second outlet is substantially in line with the first opening received by the drill bit at its base portion.

Preferably, there is a bend of any optional angle that provides a second outlet.

Preferably, the first outlet and the second outlet are connected to each other by flange or welding.

Preferably, a 90 degree curved branch pipe is also included, which is directly connected to the second outlet.

Preferably, the curved manifold has other angles other than 90 degrees.

Preferably, the curved branch tube is replaced with a T-shaped tube.

The hot-cast type branching and assembling piece provided by the invention can connect the branching pipeline to the main line without stopping the operation of the main line, and can work under any pressure, reduce the connection workload, and facilitate subsequent maintenance and Maintenance, reducing economic and time costs.

The above as well as other objects, advantages and features of the present invention will become apparent to those skilled in the <

DRAWINGS

Some specific embodiments of the present invention are described in detail below by way of example, and not limitation. The same reference numbers in the drawings identify the same or similar parts. Those skilled in the art should understand that the drawings are not necessarily drawn to scale. The objects and features of the present invention will become more apparent in consideration of the following description in conjunction with the accompanying drawings.

Figure 1-4 shows a prior art of a hot-cast type branching splicing piece, wherein Figure 1 is a partial cross-sectional view of the splicing piece, Figures 2 and 3 are a general block diagram of the splicing piece, and Figure 4 is a front view;

Figure 5 shows a front view of a hot-cast type branching splicing member in accordance with a preferred embodiment of the present invention;

Figure 6 shows a side view of a hot cast branching splicing member in accordance with a preferred embodiment of the present invention;

Figure 7 is a front elevational view of a hot-cast type branching splicing member in accordance with a second preferred embodiment of the present invention;

Figure 8 is a front elevational view of a heat-cast type branching splicing member in accordance with a third preferred embodiment of the present invention.

detailed description

First, the splicing method for the present invention will be described with reference to Figs. 5 to 8, which show the hot-cast splicing member A, including a pair of splicing members A1 and A2, which are mounted on the periphery of the main line B, through Two pairs of opposite flanges 1 are fixed for fixing the position, and the flange 1 is fixed by screws and nuts 2 or the like. The sealing members 3 installed in the inner walls of the splicing members A1 and A2 connect the splicing members A1, A2 in a liquid-tight state to each other. Instead of the use of screws and nuts 2, the splices A1 and A2 can be welded together without the flange 1 being omitted. Further, the end of the two splicing members can be tightly welded to the main line B. The sealing member 3 can also be omitted, as shown by the position 3' of Fig. 6. The splicing member A1 includes an opening 4 for receiving and mounting the drill bit D through the opening and closing shutter device C, such as a valve or the like, to allow the drill bit D to move toward and from the main line B. The opening 4 has an axis in or near the plane that passes through the axis of the main line B. The other splicing piece A2 includes an outlet 5 connected to the branch line E. The outlet 5 has a shaft opposite the shaft of the drill receiving opening 4, the shaft of the drill receiving opening 4 spanning the axis of the main line B and positioned in or near the plane passing through the axis of the main line B, together with the drill receiving opening 4 And the outer side of the opening is completely provided with a flange 6 for the movable shutter device C which can be moved.

The inner diameter of the outlet 5 is equal or substantially equal to the main line B and the branch line E. The axis of the outlet is substantially in line with the drill receiving opening 4 at its base portion.

Figures 7 and 8 show a second embodiment and a third embodiment A2' and A2" of other splicing members, including an elbow having any optional angle providing an outlet 5. Figure 7 shows the insertion into the sleeve end of the spur line E At the outlet 5, the device may be surrounded by other means, or alternatively, the outlets may be connected to each other by flange or welding. In addition, the 90 degree elbow E1 is shown as a branch pipe directly connected to the outlet 5. The elbow E1 may There are other angles other than 90 degrees, or a T-tube can be used instead.

The splicing A of the splicing elements A1, A2 is used, as shown in Figures 5 and 6, of course the same advantages can also be derived from the use of splicing A comprising splicing elements A1 and A2', as shown in Figure 7, or including splicing pieces The use of splicing A of A1 and A2" is shown in FIG.

The splicing element of the invention is especially suitable for pipelines, in particular main lines, which are installed underground, and only a small part of the bottom surface can be excavated, of course also for pipelines on the ground or above the ground.

The present invention has been described with reference to the specific illustrative embodiments, and is not limited by the scope of the appended claims. It will be appreciated by those skilled in the art that the embodiments of the invention can be modified and modified without departing from the scope and spirit of the invention.

Claims

A hot cast type splicing member (A) characterized by comprising:

The first splicing piece (A1) and the second splicing piece (A2) are mounted on the periphery of the main line (B), and the first splicing piece (A1) includes a first opening (4) for receiving and receiving the drill bit (D) Installed through the opening and closing shutter device (C) to allow the drill bit (D) to move toward and from the main line (B), the second splicing member (A2) including the second An outlet (5) connected to the branch line (E);

a first flange (1), the first flange (1) is two pairs, opposite directions, fixed by screws and nuts (2);

a sealing member (3) mounted on an inner wall of the first and second splicing members (A1, A2) for interconnecting the first and second splicing members (A1, A2) in a liquid sealed state;

a drill bit that receives the shaft of the first opening (4) and spans the axis of the main line (B), and is finally positioned on or near the axial plane of the main line (B), along with the first opening ( 4) and the outer side of the first opening (4) is completely provided with a second flange (6) for the movable fixed shutter device (C).
A heat-cast splicing member (A) according to claim 1, wherein said first splicing member (A1) and said second splicing member (A2) are welded together without using a first flange ( 1).
A heat-cast splicing member (A) according to claim 1, wherein the ends of said first splicing member (A1) and said second splicing member (A2) are tightly welded to the main line (B) The sealing element (3) is not used.
A heat-cast splicing member (A) according to claim 1, wherein said first opening (4) has an axis in or near a plane passing through said main line (B) The axis.
A heat-cast splicing member (A) according to claim 1, wherein said second outlet (5) has an axis opposite to the axis of said first opening (4) received by the drill bit, The inner diameter of the second outlet (5) is equal or substantially equal to the main line (B) and the branch line (E), and the axis of the second outlet (5) is substantially received at the base portion thereof with the drill bit. The first opening (4) is A line.
A heat-cast splicing member (A) according to claim 1, characterized by having an elbow providing any optional angle of said second outlet (5).
A hot-cast type splicing member (A) according to claim 1, wherein the first outlet (4) and the second outlet (5) are connected to each other by flange or welding. .
A heat-cast splicing member (A) according to claim 1, further comprising a 90-degree curved branch pipe (E1) directly connected to the second outlet (5).
A heat-cast splicing member (A) according to claim 8, characterized in that the curved branch pipe (E1) has other angles different from 90 degrees.
A heat-cast splicing member (A) according to claim 8, characterized in that the curved branch pipe (E1) is replaced with a T-shaped pipe.