CN215617652U - Cast iron pipe tapping is supplementary and installation device - Google Patents

Cast iron pipe tapping is supplementary and installation device Download PDF

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Publication number
CN215617652U
CN215617652U CN202122304075.7U CN202122304075U CN215617652U CN 215617652 U CN215617652 U CN 215617652U CN 202122304075 U CN202122304075 U CN 202122304075U CN 215617652 U CN215617652 U CN 215617652U
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China
Prior art keywords
pipe
pipe plug
punching
gas pipeline
screw rod
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CN202122304075.7U
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Chinese (zh)
Inventor
朱涛
朱伟
卢赟
刘斌
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Shanghai Energy Construction Group Co ltd
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Shanghai Energy Construction Group Co ltd
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Abstract

The utility model discloses a cast iron pipe tapping assisting and installing device, which comprises a puncher, a punching base, a pipe plug installer and a pipe plug, wherein the puncher is arranged on the pipe plug installer; the punching base comprises a base fixing flange; the punching base is fixed on the outer wall of the gas pipeline by arranging a plurality of chains surrounding the gas pipeline on a base fixing flange; the pipe plug mounting device comprises a pipe plug outer sleeve, a pipe plug inner sleeve and a pipe plug screw rod which are connected in sequence in a threaded manner; the end part of the pipe plug screw rod facing the gas pipeline is provided with a pipe plug; the pipe plug comprises a tensioning screw rod, a rubber gasket, a lower fastener and an upper fastener; the lower fastener is a pipe fitting, and the part which is eccentric from the long-length central position is hinged with the tensioning screw rod; the upper fastener is in a tubular structure, an inner hole is an internal thread, the shape of the upper fastener is matched with that of the inner hole of the pipe plug inner sleeve, which is close to the gas pipeline, and the upper fastener is in a polygonal structure and is connected with the pipe plug inner sleeve sliding pair. The utility model can improve the construction efficiency and reduce the construction cost under the condition of ensuring the safety.

Description

Cast iron pipe tapping is supplementary and installation device
Technical Field
The utility model relates to the technical field of gas pipeline maintenance, in particular to a cast iron pipe tapping assisting and installing device.
Background
Along with the continuous expansion of city scale, the original gas pipeline of cast iron material in city is being gradually replaced by the steel pipeline, simultaneously because old gas pipe transformation planning in city, dodge other important infrastructure construction in city and involve many reasons such as pipeline temporary relocation, can appear in the transformation, the in-process of relocation if construction such as pipeline scarf joint, these constructions need initiatively carry out trompil construction operation at the pipeline.
Need carry out artifical trompil (two per side) to the gas pipeline of inlaying the joint both sides during current inlaying and connect the construction, wherein the trompil far away apart from inlaying the joint plays the effect of diffusing the interior gas that is more than of pipeline, and the near trompil of distance inlaying the joint should be about the general unable complete closure scheduling problem of gate valve of lower reaches need block the equipment such as air pocket and block to wherein blocking and come gas.
However, in the prior art, in order to ensure the safety of the diffusion in the gas diffusion stage and prevent the problems of suffocation of personnel, gas explosion and the like, the cast iron pipe needs to be perforated in a fully closed state, the existing fully closed perforated operation equipment for the cast iron pipe is mostly disposable equipment, and the whole equipment needs to be left on the cast iron pipe after perforation.
Therefore, how to improve the construction efficiency and reduce the construction cost under the condition of ensuring the safety becomes a technical problem which needs to be solved urgently by technical personnel in the field.
SUMMERY OF THE UTILITY MODEL
In view of the above-mentioned defects of the prior art, the present invention provides a cast iron pipe tapping auxiliary and installation device, which aims to improve the construction efficiency and reduce the construction cost under the condition of ensuring the safety.
In order to achieve the purpose, the utility model discloses a cast iron pipe tapping auxiliary and mounting device, which comprises a puncher, a positioning device and a positioning device, wherein the puncher is arranged on the cast iron pipe tapping auxiliary and mounting device; the device also comprises a punching base, a pipe plug installer and a pipe plug;
the punching base comprises a base fixing flange, and a gas isolation pipe and a valve connecting pipe which are respectively connected with two sides of the base fixing flange and are coaxially arranged;
the punching base is fixed on the outer wall of the gas pipeline in a binding mode by arranging a plurality of chains surrounding the gas pipeline on the base fixing flange;
one end of the gas isolation pipe is of a concave structure matched with the outer wall of the gas pipeline, and the other end of the gas isolation pipe is connected with the base fixing flange;
the concave structure and the outer wall of the gas pipeline form air seal through a sealing structure;
the pipe plug installer comprises a pipe plug outer sleeve, a pipe plug inner sleeve and a pipe plug screw rod;
the size of the pipe plug outer sleeve is matched with that of the valve connecting pipe, the size of the pipe plug inner sleeve is smaller than that of the valve connecting pipe, and the size of the pipe plug screw is smaller than that of a hole formed in the gas pipeline by the puncher;
one end of the pipe plug outer sleeve is in threaded connection with the pipe plug inner sleeve in a threaded connection mode through a fixing plate;
one end of the pipe plug outer sleeve penetrates out of the corresponding fixing plate to serve as an inner sleeve driving end for applying rotary power, and the other end of the pipe plug outer sleeve extends out of the other end of the pipe plug outer sleeve along the length direction of the pipe plug outer sleeve;
the driving end of the inner sleeve is in threaded connection with the pipe plug screw rod in a threaded connection mode through a fixing plate;
one end of the pipe plug screw rod penetrates out of the corresponding fixing plate to serve as a pipe plug driving end for applying rotary power, and the other end of the pipe plug screw rod extends along the length direction of the pipe plug inner sleeve and extends out of the other end of the pipe plug inner sleeve;
the other end of the pipe plug screw is provided with a pipe plug;
the pipe plug comprises a tensioning screw rod, a rubber gasket, a lower fastener and an upper fastener;
the outer diameter of the tensioning screw rod is smaller than a hole formed in the gas pipeline by the puncher, one end, corresponding to the interior of the gas pipeline, of the tensioning screw rod is connected with the position, close to the middle part, of the lower fastening piece in a hinge connection mode, the other end of the tensioning screw rod is detachably connected with the pipe plug screw rod, and the rubber gasket and the upper fastening piece are arranged on the threaded portion;
the lower fastening piece is a rod piece with the outer diameter smaller than that of the tensioning screw rod, and the part which is eccentric from the long-length central position is hinged with the tensioning screw rod;
the rubber gasket is in interference fit with the threaded part and is sleeved on the threaded part through elasticity;
go up the fastener and be the tubular structure, the hole be with the internal thread that screw thread portion matches, the appearance with the stopcock inner skleeve is close to the hole of the other end of gas pipeline is assorted polygon structure, with for transition fit between the polygonal hole of stopcock inner skleeve, be and follow stopcock inner skleeve axis direction reciprocating motion's sliding pair is connected.
Preferably, the punching base is fixed on the outer wall of the gas pipeline in a binding manner by arranging three chains surrounding the gas pipeline on the base fixing flange;
chain connecting columns are arranged at the positions, closest to the two ends of the gas pipeline, of the base fixing flange and at the positions corresponding to the two sides of the gas pipeline;
the two chains are arranged at the positions, closest to the two ends of the gas pipeline, of the base fixing flange and are respectively connected with the corresponding chain connecting columns;
the chain set up in base mounting flange middle part position, both ends respectively with the base mounting flange corresponds two of gas pipeline both sides the chain spliced pole is connected.
Preferably, the puncher comprises a punching sleeve, and a punching screw and a punching valve which are arranged on the punching sleeve;
the side wall of the punching sleeve is provided with the punching valve, and one end of the punching sleeve is in threaded connection with the punching screw rod in a threaded connection mode through a fixing plate;
one end of the punching screw rod penetrates out of the corresponding fixing plate to serve as a punching driving end for applying rotary power, the other end of the punching screw rod extends out of the other end of the punching sleeve along the length direction of the punching sleeve to serve as a drilling end for arranging a drill bit;
when punching, the telescopic other end that punches with the valve connecting pipe is connected and is a straight line, the drill bit extends to along the axis and treats the trompil the outer wall of gas pipeline punches.
More preferably, the punching driving end is provided with a handle.
Preferably, the sealing structure comprises a rubber sealing gasket arranged in the concave structure;
the gas isolation pipe is hermetically sealed with the outer wall of the gas pipeline through the rubber sealing gasket.
More preferably, the gas isolation pipe is of a double-layer pipe structure;
the double-layer pipe structure comprises circular pipes, wherein the circular pipes are matched with the inner pipe and the outer pipe through two measuring rulers and are concentrically arranged; a plurality of sealing bolts parallel to the axis are arranged in an interlayer between the inner pipe and the outer pipe in a surrounding manner;
each sealing bolt's nut all is located base mounting flange orientation the one side of valve connecting pipe, the screw thread end all withstands rubber seal pad.
Preferably, one surface of the upper fastening piece, which is opposite to the outer side of the pipe plug inner sleeve, is provided with a limiting flange.
Preferably, the detachable connection between the tightening screw and the end of the pipe plug screw is a threaded hole connection, and the screwing direction of the threaded part of the tightening screw is the same as that of the pipe plug screw.
Preferably, a ball valve is arranged on the valve connecting pipe.
Preferably, the plug driving end and the inner sleeve driving end are both provided with handles.
The utility model has the beneficial effects that:
the utility model can improve the construction efficiency and reduce the construction cost under the condition of ensuring the safety.
The conception, the specific structure and the technical effects of the present invention will be further described with reference to the accompanying drawings to fully understand the objects, the features and the effects of the present invention.
Drawings
FIG. 1 is a schematic cross-sectional view illustrating a perforated base disposed on a gas pipeline according to an embodiment of the present invention.
Fig. 2 is a schematic structural diagram of a hole puncher in an embodiment of the utility model.
Fig. 3 is a schematic view showing the structure of the lower fastening member of the plug in an embodiment of the present invention after the lower fastening member has completely entered the gas pipe.
Fig. 4 is a partial schematic view showing a lower fastening member of a pipe plug before it enters a gas pipeline according to an embodiment of the present invention.
Fig. 5 is a partial schematic view of a lower fastener of a plug tube in an embodiment of the utility model from another perspective prior to entering a gas pipeline.
Fig. 6 shows a schematic exploded view of a plug in accordance with an embodiment of the present invention.
FIG. 7 is a schematic cross-sectional view along direction AA in FIG. 1 of the present invention.
Detailed Description
Examples
As shown in fig. 1 to 7, in practical application, the present invention is applied to a construction method of a cast iron pipe tapping auxiliary and installation device; the method comprises the following construction steps:
step 1, searching a gas pipeline 1 to be perforated;
step 2, excavating a covering layer above the gas pipeline 1;
step 3, installing a punching base at the position where the outer wall of the gas pipeline 1 needs to be punched;
the punching base comprises a base fixing flange 2, and a gas isolation pipe 3 and a valve connecting pipe 4 which are respectively connected with two sides of the base fixing flange 2 and are coaxially arranged;
the punching base is fixed on the outer wall of the gas pipeline 1 in a binding mode by arranging a plurality of chains 5 surrounding the gas pipeline 1 on a base fixing flange 2;
one end of the gas isolation pipe 3 is of a concave structure matched with the outer wall of the gas pipeline 1, and the other end of the gas isolation pipe is connected with the base fixing flange 2;
the concave structure forms air seal with the outer wall of the gas pipeline 1 through a sealing structure;
step 4, determining that the sealing structure forms air seal, and after each chain 5 is firmly bound, connecting the ball valve 22 on the valve connecting pipe 4 through a flange sheet;
step 5, arranging a puncher at the other end of the ball valve 22;
the puncher comprises a punching sleeve 14, a punching screw 15 and a punching valve 16, wherein the punching screw 15 and the punching valve 16 are arranged on the punching sleeve 14;
a punching valve 16 is arranged on the side wall of the punching sleeve 14, and one end of the punching sleeve is in threaded connection with the punching screw 15 through a fixing plate in a threaded connection mode;
one end of the punching screw 15 penetrates out of the corresponding fixing plate to serve as a punching driving end for applying rotary power, the other end of the punching screw extends out of the other end of the punching sleeve 14 along the length direction of the punching sleeve 14 to serve as a drilling end, and a drill bit 17 is arranged;
step 6, after the puncher is installed, connecting the punching valve 16 with a high-pressure nitrogen source, opening the ball valve 22, and filling nitrogen into the punching base and the puncher; when the oxygen content in the punching base is less than 2%, stopping injecting nitrogen, and closing the punching valve 16 to prepare for punching;
step 7, during punching, rotating a handle 18 at a punching driving end to enable a drill bit 17 to extend to the outer wall of the gas pipeline 1 to be punched along an axis, and drilling the outer wall of the gas pipeline 1 until the outer wall penetrates through the outer wall of the gas pipeline 1;
step 8, turning over the handle 18 at the punching driving end after the completion, closing the ball valve after the drill bit is withdrawn to the outer side of the ball valve 22, and dismantling the puncher;
step 9, installing a pipe plug on a pipe plug screw 8 of the pipe plug installer;
the pipe plug mounting device comprises a pipe plug outer sleeve 6, a pipe plug inner sleeve 7 and a pipe plug screw rod 8;
the size of the pipe plug outer sleeve 6 is matched with that of the valve connecting pipe 4, the size of the pipe plug inner sleeve 7 is smaller than that of the valve connecting pipe 4, and the size of the pipe plug screw rod 8 is smaller than that of a hole formed in the gas pipeline 1 by the puncher;
one end of the pipe plug outer sleeve 6 is in threaded connection with the pipe plug inner sleeve 7 through a fixing plate in a threaded connection mode;
one end of the pipe plug inner sleeve 7 penetrates out of the corresponding fixing plate to serve as an inner sleeve driving end for applying rotary power, and the other end of the pipe plug inner sleeve 7 extends out of the other end of the pipe plug outer sleeve 6 along the length direction of the pipe plug outer sleeve 6;
the driving end of the inner sleeve is in threaded connection with the pipe plug screw 8 through a fixing plate in a threaded connection mode;
one end of the pipe plug screw rod 8 penetrates out of the corresponding fixing plate to serve as a pipe plug driving end for applying rotary power, and the other end of the pipe plug screw rod extends along the length direction of the pipe plug inner sleeve 7 and extends out of the other end of the pipe plug inner sleeve 7;
the other end of the pipe plug screw rod 8 is provided with a pipe plug;
the pipe plug comprises a tensioning screw 9, a rubber gasket 10, a lower fastener 11 and an upper fastener 12;
the outer diameter of the tensioning screw 9 is smaller than a hole formed in the gas pipeline 1 by a puncher, one end corresponding to the interior of the gas pipeline 1 is connected with the middle part of the lower fastening piece 11 in a hinge connection mode, the other end of the tensioning screw is detachably connected with the pipe plug screw 8, and the thread part is provided with a rubber gasket 10 and an upper fastening piece 12;
the lower fastening piece 11 is a rod piece with the outer diameter smaller than that of the tensioning screw 9, and the part which is eccentric from the long center is hinged with the tensioning screw 9;
the rubber gasket 10 is in interference fit with the threaded part and is sleeved on the threaded part through elasticity;
the upper fastening piece 12 is of a tubular structure, an inner hole is an internal thread matched with the thread part, the shape of the upper fastening piece is a polygonal structure matched with the inner hole at the other end, close to the gas pipeline 1, of the pipe plug inner sleeve 7, the polygonal inner hole of the pipe plug inner sleeve 7 is in transition fit, and the upper fastening piece is connected with a sliding pair capable of moving in a reciprocating mode along the axial direction of the pipe plug inner sleeve 7;
after the installation is finished, the upper fastening piece 12 is used for restraining the lower fastening piece 11 and the tensioning screw 9 to be overlapped into a straight line;
step 10, mounting the plug installer on the punching base, and connecting the plug outer sleeve 6 with the valve connecting pipe 4 to form a straight line;
step 11, opening the ball valve 22, rotating the handle 18 on the driving end of the inner sleeve, and feeding the lower fastening piece 11 and the tensioning screw 9 which are overlapped into a straight line into a hole in the outer wall of the gas pipeline 1;
step 12, when the handle 18 on the driving end of the inner sleeve rotates still, the rubber gasket 10 is shown to be propped against the outer wall of the gas pipeline 1, and then the handle 18 on the driving end of the pipe plug is rotated, so that the lower fastening piece 11 and the tensioning screw 9 which are overlapped into a straight line further extend into the gas pipeline 1;
step 13, when the handle 18 on the driving end of the pipe plug is not rotated, the pipe plug screw 8 is shown to be propped against the upper fastening piece 12, the lower fastening piece 11 is completely inserted into the gas pipeline 1, the lower fastening piece 11 is hinged with the tensioning screw 9 from the center position of the deflection degree, and at the moment, the lower fastening piece is crossed with the tensioning screw 9;
14, reversing the handle 18 on the driving end of the pipe plug, and withdrawing the tensioning screw 9 outwards until the tensioning screw is clamped by the lower fastening piece 11;
step 15, rotating the handle 18 on the driving end of the pipe plug again, locking the upper fastening piece 12 to the tensioning screw 9, and enabling the rubber gasket 10 to cover and fill the gap between the tensioning screw 9 and the hole of the gas pipeline;
and step 16, dismantling all chains, removing the punching base and the pipe plug installer, and finishing construction.
According to the utility model, the punching base is fixed on the outer wall of the gas pipeline 1 in a binding manner through the chain 5, and the punching base can be recovered after construction is finished, so that the waste is reduced.
The leakage point on the gas pipeline 1 is blocked by the pipe plug installer and the pipe plug, so that the construction speed and the construction efficiency are improved.
In some embodiments, in step 3, the perforated base is fixed on the outer wall of the gas pipeline 1 in a binding manner by arranging three chains 5 around the gas pipeline 1 on the base fixing flange 2;
the positions of the base fixing flange 2, which are closest to the two ends of the gas pipeline 1, and the positions corresponding to the two sides of the gas pipeline 1 are provided with chain connecting columns 13;
among the three chains 5 surrounding the gas pipeline 1, two chains 5 are arranged at the positions of the base fixing flange 2 closest to the two ends of the gas pipeline 1 and are respectively connected with corresponding chain connecting columns 13;
one chain 5 is arranged in the middle of the base fixing flange 2, and two ends of the chain are respectively connected with two chain connecting columns 13 of the base fixing flange 2 corresponding to two sides of the gas pipeline 1.
In certain embodiments, in step 3, the sealing structure comprises a rubber gasket 19 disposed in a concave configuration;
the gas isolation pipe 3 is hermetically sealed with the outer wall of the gas pipeline 1 through a rubber gasket 19.
In certain embodiments, the gas isolation tube 3 is a double-layer tube structure;
the double-layer pipe structure comprises circular pipes which are matched with the inner pipe and the outer pipe through two measuring rulers and are concentrically arranged; a plurality of sealing bolts 20 parallel to the axis are arranged in an interlayer between the inner pipe and the outer pipe in a surrounding manner;
the nut of each sealing bolt 20 is located on the side of the base mounting flange 2 facing the valve connecting pipe 4, and the threaded end of each sealing bolt abuts against the rubber sealing pad 19.
In some embodiments, the upper fastener 12 is provided with a stop flange 21 on a side opposite the outside of the internal sleeve 7 of the plug.
In some embodiments, the removable connection of the tension screw 9 to the end of the plug screw 8 is a threaded hole connection;
the direction of rotation of the threaded portion of the tightening screw 9 is the same as the direction of rotation and pitch of the plug screw 8.
In some embodiments, after step 5 is completed, the method for detecting whether the hole puncher has leakage includes the following specific steps:
step 5.1, connecting external pressurized air to the perforating valve 16 to pressurize the inside of the perforating device;
step 5.2, after the pressure in the puncher is the same as the pressure in the gas pipeline 1, closing the punching valve 16 and installing a pressure gauge;
step 5.3, opening the punching valve 16 and the ball valve 22, and observing the change of the pressure gauge;
if the degree of the pressure gauge is reduced by less than 10% of the initial value within 2 hours, the perforating valve 16 is successfully installed; if not, re-executing the step 1 to the step 5 until the requirements are met;
and 5.4, after the installation is successful, closing the ball valve 22, and opening the punching valve 16 for pressure relief.
In certain embodiments, after step 16 is completed, a soap solution is applied over the upper fastener 12 and the rubber gasket 10; whether leakage exists is judged by observing whether bubbles are generated in the soap liquid.
The foregoing detailed description of the preferred embodiments of the utility model has been presented. It should be understood that numerous modifications and variations could be devised by those skilled in the art in light of the present teachings without departing from the inventive concepts. Therefore, the technical solutions available to those skilled in the art through logic analysis, reasoning and limited experiments based on the prior art according to the concept of the present invention should be within the scope of protection defined by the claims.

Claims (10)

1. The cast iron pipe tapping auxiliary and mounting device comprises a puncher; the device is characterized by also comprising a punching base, a pipe plug installer and a pipe plug;
the punching base comprises a base fixing flange (2), and a gas isolation pipe (3) and a valve connecting pipe (4) which are respectively connected with two sides of the base fixing flange (2) and are coaxially arranged;
the punching base is fixed on the outer wall of the gas pipeline (1) in a binding mode by arranging a plurality of chains (5) surrounding the gas pipeline (1) on the base fixing flange (2);
one end of the gas isolation pipe (3) is of an inwards concave structure matched with the outer wall of the gas pipeline (1), and the other end of the gas isolation pipe is connected with the base fixing flange (2);
the concave structure and the outer wall of the gas pipeline (1) form air seal through a sealing structure;
the pipe plug mounting device comprises a pipe plug outer sleeve (6), a pipe plug inner sleeve (7) and a pipe plug screw rod (8);
the size of the pipe plug outer sleeve (6) is matched with that of the valve connecting pipe (4), the size of the pipe plug inner sleeve (7) is smaller than that of the valve connecting pipe (4), and the size of the pipe plug screw rod (8) is smaller than a hole formed in the gas pipeline (1) by the puncher;
one end of the pipe plug outer sleeve (6) is in threaded connection with the pipe plug inner sleeve (7) in a threaded connection mode through a fixing plate;
one end of the pipe plug inner sleeve (7) penetrates out of the corresponding fixing plate to serve as an inner sleeve driving end for applying rotary power, and the other end of the pipe plug inner sleeve (7) extends out of the other end of the pipe plug outer sleeve (6) along the length direction of the pipe plug outer sleeve (6);
the driving end of the inner sleeve is in threaded connection with the pipe plug screw rod (8) in a threaded connection mode through a fixing plate;
one end of the pipe plug screw rod (8) penetrates out of the corresponding fixing plate to serve as a pipe plug driving end for applying rotary power, and the other end of the pipe plug screw rod extends along the length direction of the pipe plug inner sleeve (7) and extends out of the other end of the pipe plug inner sleeve (7);
the other end of the pipe plug screw rod (8) is provided with a pipe plug;
the pipe plug comprises a tensioning screw rod (9), a rubber gasket (10), a lower fastener (11) and an upper fastener (12);
the outer diameter of the tensioning screw rod (9) is smaller than a hole formed in the gas pipeline (1) by the puncher, one end, corresponding to the interior of the gas pipeline (1), of the tensioning screw rod is connected with the position, close to the middle, of the lower fastening piece (11) in a hinge connection mode, the other end of the tensioning screw rod is detachably connected with the pipe plug screw rod (8), and the rubber gasket (10) and the upper fastening piece (12) are arranged on the threaded portion;
the lower fastening piece (11) is a rod piece with the outer diameter smaller than that of the tensioning screw rod (9), and the part which is eccentric from the long-length center position is hinged with the tensioning screw rod (9);
the rubber gasket (10) is in interference fit with the threaded part and is sleeved on the threaded part through elasticity;
go up fastener (12) and be the tubular structure, the hole be with the internal thread that screw thread portion matches, the appearance with stopcock inner skleeve (7) are close to the hole of the other end of gas pipeline (1) is assorted polygonal structure, with for transition fit between stopcock inner skleeve (7) the polygonal hole, be and follow stopcock inner skleeve (7) axis direction reciprocating motion's sliding pair is connected.
2. The tapping assist and installation device for cast iron pipes as claimed in claim 1, wherein the tapping base is fixed to the outer wall of the gas pipe (1) in a binding manner by providing three chains (5) around the gas pipe (1) at the base fixing flange (2);
chain connecting columns (13) are arranged at the positions, closest to the two ends of the gas pipeline (1), of the base fixing flange (2) and corresponding to the two sides of the gas pipeline (1);
the two chains (5) are arranged at the positions, closest to the two ends of the gas pipeline (1), of the base fixing flange (2) and are respectively connected with the corresponding chain connecting columns (13);
one the chain (5) is arranged in the middle of the base fixing flange (2), and two ends of the chain are respectively connected with the two chain connecting columns (13) on two sides of the gas pipeline (1) corresponding to the base fixing flange (2).
3. The tapping assist and installation device for cast iron pipes as claimed in claim 1, wherein the puncher comprises a punching sleeve (14), and a punching screw (15) and a punching valve (16) provided on the punching sleeve (14);
the side wall of the punching sleeve (14) is provided with the punching valve (16), and one end of the punching sleeve is in threaded connection with the punching screw (15) in a threaded connection mode through a fixing plate;
one end of the punching screw rod (15) penetrates out of the corresponding fixing plate to serve as a punching driving end for applying rotary power, the other end of the punching screw rod extends out of the other end of the punching sleeve (14) along the length direction of the punching sleeve (14) to serve as a drilling end for arranging a drill bit (17);
when punching, the other end of the punching sleeve (14) is connected with the valve connecting pipe (4) to form a straight line, and the drill bit (17) extends to the outer wall of the gas pipeline (1) to be punched along the axis.
4. The tapping assist and installation device for cast iron pipes as claimed in claim 3, wherein the tapping driving end is provided with a handle (18).
5. The auxiliary and mounting device for tapping of cast iron pipes as claimed in claim 1, wherein said sealing structure comprises a rubber gasket (19) disposed in said internal concave structure;
the gas isolation pipe (3) is hermetically sealed with the outer wall of the gas pipeline (1) through the rubber sealing gasket (19).
6. The tapping assist and installation device for cast iron pipes as claimed in claim 5, wherein the gas insulated pipe (3) is a double-layer pipe structure;
the double-layer pipe structure comprises circular pipes, wherein the circular pipes are matched with the inner pipe and the outer pipe through two measuring rulers and are concentrically arranged; a plurality of sealing bolts (20) parallel to the axis are arranged in an interlayer between the inner pipe and the outer pipe in a surrounding manner;
each nut of the sealing bolt (20) is located on one side, facing the valve connecting pipe (4), of the base fixing flange (2), and the threaded end of each nut abuts against the rubber sealing gasket (19).
7. Tapping assist and installation device for cast iron pipes according to claim 1, characterized in that the upper fastening element (12) is provided with a stop flange (21) on the side opposite the outside of the plug inner sleeve (7).
8. The tapping assist and installation device for cast iron pipes as claimed in claim 1, wherein said detachable connection of said tension screw (9) to the end of said pipe plug screw (8) is a threaded hole connection, and the direction of rotation of said threaded portion of said tension screw (9) is the same as the direction of rotation of said pipe plug screw (8).
9. The tapping assist and installation device for cast iron pipes as claimed in claim 1, wherein the valve connecting pipe (4) is provided with a ball valve (22).
10. The device for assisting and installing tapping in cast iron pipes as claimed in claim 1, wherein the plug driving end and the inner sleeve driving end are provided with handles (18).
CN202122304075.7U 2021-09-23 2021-09-23 Cast iron pipe tapping is supplementary and installation device Active CN215617652U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202122304075.7U CN215617652U (en) 2021-09-23 2021-09-23 Cast iron pipe tapping is supplementary and installation device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202122304075.7U CN215617652U (en) 2021-09-23 2021-09-23 Cast iron pipe tapping is supplementary and installation device

Publications (1)

Publication Number Publication Date
CN215617652U true CN215617652U (en) 2022-01-25

Family

ID=79918874

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202122304075.7U Active CN215617652U (en) 2021-09-23 2021-09-23 Cast iron pipe tapping is supplementary and installation device

Country Status (1)

Country Link
CN (1) CN215617652U (en)

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