WO2018023822A1

WO2018023822A1 - Hot-cast branching method using hot-cast assembly component

Info

Publication number: WO2018023822A1
Application number: PCT/CN2016/094088
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: CN106224674A

Abstract

A hot-cast branching method using a hot-cast assembly component, comprising the following steps: (a) installing a hot-cast assembly component (A); (b) pre-installing a branch line (E) to a second outlet (5) and installing a shutter device (8); (c) installing an assembling device (C) to a drill head-receiving first opening (4); (d) performing fluid tightness testing; (e) a drill head (D) cutting a peripheral wall (10) and a subsequent peripheral wall (11) of a main pipeline (B), and a nut (14) passing through a first through hole (12); (f) switching off a drilling saw (9), the assembling device (C) and the drill bit (D); (g) connecting a blocking piston mounting device (F) to the assembling device (C), and switching on; (h) removing the assembling device (C), and partially connecting a flange plug to the assembly component (A); (i) performing gas purification. The method achieves connecting a branch pipeline to a main pipeline without causing downtime for the main pipeline, and is capable of operating under any pressure, thereby reducing connection operation workload, facilitating maintenance and upkeep, and reducing costs.

Description

Method for hot-casting branching using hot-casting splicing piece

Technical field

The invention relates to a branching method, in particular to a method for branching a practical hot-cast type branching splicing component, thereby connecting the branching pipeline to the main line to complete the splicing.

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 method for hot-casting branching using a hot-cast splicing member (A) comprising the steps of: (1) mounting a hot-cast splicing member on a main line; (2) passing A series of branch lines are pre-mounted to the second outlet to lay a newly installed part, wherein the branch line pressure is relatively high, providing a drain pipe and installing a shutter device at a midpoint of the new installation portion; (3) installing the shutter device Receiving a first opening to the drill bit; (4) performing a fluid tightness test on the entire new mounting portion including the splicing piece; (5) fixing the drill bit to the splicing device, opening the splicing device to enable the boring saw to pass through the first The opening moves forward into the interior of the splicing piece and cuts off the peripheral wall of the main line and the subsequent peripheral wall to form a first perforation and a second perforation, after which the nut penetrates to the side opposite the bore receiving the first opening (6) taking out the drilling saw, closing the splicing device, and removing the drill bit; (7) connecting the first and second blocking piston mounting devices to the position of the drill bit D on the splicing device, opening the closing device C, The first blocking piston (15), which is divided into meshes, is then mounted to the first perforation opposite the first opening by the use of a nut (14); (8) the splicing device is removed and the flange plug is first The splice members on the outer side of the piston are partially connected; (9) in the case where the shutter device is closed during the step, the gas purging through the new mounting portion is performed by the shutter device.

Preferably, the hot-cast splicing member comprises: a first splicing member and a second splicing member mounted on a periphery of the main line, the first splicing member including a first opening for receiving and installing the drill bit through the opening and closing shutter a device to allow the bit to move toward and from the main line, the second splice comprising a second outlet connected to the branch line; the first flange, the first flange being two pairs, in opposite directions, using screws and nuts Fixed; a seal mounted on the inner walls of the first and second splicing members for interconnecting the first and second splicing members in a liquid-tight state; the drill bit receiving the shaft of the first opening and crossing the main line The shaft, which is 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, provides a second flange for the movable fixed shutter arrangement.

Preferably, the shutter device is located away from the intersection of the lines.

Preferably, the order of execution of steps (2) and (3) may be reversed or may be performed simultaneously.

Preferably, if the step (4) seal test uses a pressure greater than the fluid pressure in the main line, then the flange plug is connected in step (3) instead of the splicing device, and the splicing device is replaced with a flange plug after the test is completed. head.

Preferably, the boring saw comprises a plurality of axial directions and presents pores arranged in an outward direction on the wall thereof so as not to reduce the amount of liquid transport during the puncturing operation, the main line and the new mounting portion are mutually penetrated by the second perforations Communication is made between the second perforations and the second outlet, and when the transfer liquid is at a higher pressure, the shutter device on the new mounting portion is closed to purify the gas upstream of the discharge pipe.

Preferably, the first and second blocking pistons may be placed in the grid defined by the first opening by the nut being placed in the bore.

Preferably, the bore receiving first opening defines a groove running along the warp and then along the periphery, and the first and second blocking pistons having the protruding end fall and reverse so that the protruding end engages the groove therein The third blocking piston is then fixed.

Preferably, the first blocking piston is mounted directly to the main line and adjacent the inside of the splicing member to prevent random circumferential movement of the splicing piece along the main line.

Preferably, the branching method is suitable for pipelines, especially where the main line is installed underground, and only a small portion of the bottom surface can be excavated, as well as for pipelines on the ground or above the ground.

The hot-casting branching method 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 showing a heat-cast type branching splicing member in accordance with a third preferred embodiment of the present invention;

9 to 11 show how a branching method according to a preferred embodiment of the present invention is performed, wherein FIG. 9 is a general block diagram, and FIGS. 10 and 11 are cross-sectional views of basic components;

12 and 13 are front elevational views of two different blocking pistons in accordance with a 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 seal 3 installed in the inner wall of the splicing elements A1 and A2 will be in a liquid-tight shape The splicing pieces A1, A2 are connected 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 branching method embodiment of the present invention:

The description is made in order, in which the splicing piece A of Fig. 5 and Fig. 6 is used, and the steps of the method are as follows:

(1) Mounting the splicing piece A on the main line B;

(2) The newly installed portion Y is laid by pre-installing a series of branch lines E to the outlet 5, wherein the pressure is relatively high, and it is desirable to be able to provide the drain pipe 7 and install the shutter device 8 at the midpoint position of the new mounting portion Y. The position of the shutter device 8 is preferably remote from the intersection of the line and its maintenance can be convenient. get on;

(3) mounting the shutter device 8 to the drill receiving opening 4;

Note that the order of execution of steps (2) and (3) may be reversed or may be performed simultaneously.

(4) Performing a fluid tightness test on the entire new mounting portion Y including the splicing piece A, which can be achieved using a pressure greater than the fluid pressure in the main line B and which is more satisfactory, in order to perform the test In step (3), connect the flange plug instead of the splicing device C. In this case, replace the splicing device with a flange plug after the test is completed;

(5) Fixing the drill bit D to the splicing device C, opening the splicing device C so that the boring saw 9 can move forward through the opening 4 into the inside of the splicing piece A, and cut off the peripheral wall 10 of the main line B and thereafter The peripheral wall 11 thus forms

perforations

12 and 13. The boring saw 9 includes a plurality of axial directions and presents pores arranged in an outward direction on its wall such that the arrangement does not reduce the amount of liquid transfer during the puncturing operation. The main line B and the new mounting portion Y communicate with each other through the perforations 13, and the perforations 13 and the outlets 5 are opposite in direction. When the transfer liquid is at a higher pressure, the shutter device 8 on the new mounting portion Y is closed to enable purging of the gas upstream of the drain pipe 7. After the perforating operation, the nut 14 penetrates into the interior of the perforation 12 opposite the bore receiving opening 4;

(6) taking out the boring saw 9, closing the splicing device C, and removing the drill bit D;

(7) connecting the first and second blocking pistons 15, 15' mounting device F to the splicing device C, the position of the drill bit D as shown in Fig. 10, opening the splicing device C, and then using the nut 14 to be divided into nets a first blocking piston 15 of the grid is mounted in the opposite perforation 12 of the bore receiving opening 4;

(8) removing the splicing device C and connecting the flange plug to the splicing piece A outside the first blocking piston 15, as shown in FIG. 11;

(9) Gas purification through the new mounting portion Y is performed by the shutter device 8 (only in the case where the shutter device 8 is closed during the above step (5)).

According to Figures 12 and 13, the second colored piston 15' can be placed in the grid defined by the bore receiving opening by the nut 4a due to the variety of closures under the action of the first blocking piston 15. In another variation as shown in Figure 13, the bore receiving opening 4 defines a recess 4b that runs along the warp and then along the periphery, And the third blocking piston 15" having the protruding end 17 falls and reverses, so that the protruding end 17 engages the groove 4b therein to fix the third blocking piston 15". However, the blocking piston 15 mounted directly on the main line B is effective 11 to prevent random encircling movement of the splicing A along the main line B, which is now near the inside of the splicing piece A.

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 method for hot-casting branching using a hot-cast splicing member (A), comprising the steps of:

S1 mounts the hot-cast splicing piece (A) on the main line (B);

S2 lays a newly installed part (Y) by pre-installing a series of branch lines (E) to the second outlet (5), wherein the branch line pressure is relatively high, providing a drain pipe (7) and in the new installation part (Y) a shutter device (8) at a midpoint position;

S3 mounting the shutter device (8) to the drill bit receiving the first opening (4);

S4 performs a fluid tightness test on the entire new mounting portion (Y) including the splicing member (A);

S5 fixes the drill bit (D) to the splicing device (C) and opens the splicing device (C) so that the boring saw (9) can move forward through the first opening (4) into the splicing piece (A), And cutting the peripheral wall (10) of the main line (B) and the subsequent peripheral wall (11) to form a first perforation (12) and a second perforation (13), after the perforating operation, the nut (14) penetrates into the drill The hole receives the inside of the first through hole (12) on the opposite side of the first opening (4);

S6 takes out the drilling saw (9), closes the splicing device (C), and removes the drill bit (D);

S7 connects the first and second blocking piston (15, 15") mounting devices (F) to the position of the drill bit (D) on the splicing device (C), opens the splicing device (C), and then uses the nut (14) a first blocking piston (15) divided into a grid is mounted into the first perforation (12) opposite the first receiving opening (4) of the bore;

S8 removes the splicing device (C) and connects the flange plug to the splicing piece (A) portion outside the first blocking piston (15);

S9 In the case where the shutter device (8) is closed during the above step (5), gas cleaning through the new mounting portion (Y) is performed by the shutter device (8).
A method of thermally casting a branch using a hot-cast splicing member (A) according to claim 1, wherein said hot-cast splicing member (A) comprises:

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 method of hot-casting branching using a hot-cast splicing member (A) according to claim 1, characterized in that the shutter means (8) are located away from the intersection of the lines.
A method for hot-casting branching using a hot-cast splicing member (A) according to claim 1, wherein the steps (2) and (3) are performed in the reverse order or can be simultaneously performed .
A method of hot-casting branching using a hot-cast splicing member (A) according to claim 1, wherein if the sealing test in the step (4) uses a fluid in the main line (B) For pressure greater pressure, connect the flange plug in step (3) instead of the splicing device (C) and replace the splicing device (C) with a flange plug after the test is completed.
A method for hot-casting branching using a hot-cast splicing member (A) according to claim 1, characterized in that the boring saw (9) comprises a plurality of axial directions and is presented on the wall thereof a fine hole arranged in an outward direction so as not to reduce the amount of liquid transfer during the perforating operation, the main line (B) and the new mounting portion (Y) communicating with each other through the second perforation (13) The second perforation (13) is opposite to the second outlet (5) and is closed when the transport liquid is at a higher pressure. The shutter device (8) on the newly installed portion (Y) thereby purifies the gas passing upstream of the drain pipe (7).
A method of hot-casting branching using a hot-cast splicing member (A) according to claim 1, wherein said first and second blocking pistons (15, 15') are passed through a nut ( 4a) The drilled hole is placed in the grid defined by the first opening (4).
A method of hot-casting branching using a hot-cast splicing member (A) according to claim 1, wherein the bore receives the first opening (4) along the warp and then along the periphery a running groove (4b), and the first and second blocking pistons (15, 15") having the protruding end (17) are dropped and reversed so that the protruding end (17) engages the groove therein ( 4b) Further fixing the third blocking piston (15").
A method of hot-casting branching using a hot-cast splicing member (A) according to claim 1, wherein the damming piston (15) is directly mounted on the main line (B) and adjacent to the splicing member ( The inner side of A) prevents random wraparound movement of the splicing piece (A) along the main line (B).
A method for hot-casting branching using a hot-cast splicing member (A) according to claim 1, wherein the method is suitable for installation of a pipeline, in particular a main line (B), underground, and only In the case where a small portion of the bottom surface can be excavated, the same applies to the pipeline on the ground or above the ground.