KR102542489B1 - Pipeline cleaning apparatus with improved sealing power - Google Patents

Abstract

A pipe cleaning device with improved airtightness is disclosed. Conduit cleaning device with improved airtightness according to the present invention includes a connecting portion provided at both ends of a second flange coupled to a first flange on the side of a pipe buried in the ground, and a guide portion connected to the connecting portion and guiding pigs to be put in or discharged. one body; And coupled to at least one insertion groove formed along the circumferential direction on one surface opposite to the first flange of the second flange and spaced apart from each other in the radial direction, when the first flange and the second flange are coupled to the first flange. And a sealing unit for sealing between the second flange, the sealing unit has a central portion protruding outside the insertion groove and both ends in the width direction are inserted into the insertion groove, and as the pressurization and release of the pressurization, the center portion is inserted into the insertion groove and an elastic body having an elastic force reciprocating to the outside. And it is continuously formed on one side of the second flange along the circumferential direction, is disposed to cover the opening of the insertion groove, is coupled to the elastic body and interlocks with the elastic body, and when the first flange and the second flange are coupled, the first It includes a sealing member disposed between the flange and the second flange.

Description

Conduit cleaning device with improved airtightness {PIPELINE CLEANING APPARATUS WITH IMPROVED SEALING POWER}

The present invention relates to a pipe cleaning device with improved airtightness coupled to a pipe side buried in the ground.

In general, a water supply pipe buried in the ground undergoes a process of periodically removing foreign substances deposited therein using various types of washing devices. In this case, a method of washing the inside of the water supply pipe by putting a pig made of polyurethane (Poly Urethane) having excellent elasticity into the water supply pipe and moving the pig in the water supply pipe is used.

A conventional pipe cleaning device includes a pipe body having a flange coupled to a water supply pipe at both ends and having an inlet or outlet on one side, a pig inserted into the inlet or discharged from the outlet, and a cover installed in the inlet or outlet.

Such a conventional pipeline cleaning device inserts a pig into an inlet provided on one side, then blows compressed air or high-pressure pressurized water through the water supply pipe to move the pig along the water supply pipe and remove foreign substances deposited on the inner wall of the water supply pipe. Remove. Then, the pig moved along the water supply pipe is discharged through an outlet formed in another pipe body spaced a predetermined distance apart.

However, in coupling the pipe to the water pipe, a rubber packing is interposed between the flange of the water pipe and the flange of the pipe for sealing between the water pipe and the pipe, and there is a risk of leakage if the position of the rubber packing is incorrect However, there is a problem in that a lot of time is required for construction when the rubber packing is separated during the coupling of the water supply pipe and the pipe body.

Republic of Korea Patent Registration No. 10-1418958 (Announced on July 16, 2014)

Therefore, the technical problem to be solved by the present invention is to provide a pipe cleaning device with improved airtightness that can perform airtight construction and shorten construction time so that water leakage does not occur when coupling the pipe body to a pipe such as a water supply pipe.

According to one aspect of the present invention, a pipe body having a connecting portion provided at both ends of a second flange coupled to a first flange on the side of a pipe buried in the ground, and a guide portion connected to the connecting portion and guiding the pig to be put in or discharged. ; And coupled to at least one insertion groove formed along the circumferential direction on one surface of the second flange opposite to the first flange and spaced apart from each other in the radial direction, when the first flange and the second flange are coupled A sealing unit for sealing between the first flange and the second flange, wherein the sealing unit has a central portion protruding out of the insertion groove and both ends in the width direction are inserted into the insertion groove, pressurized and pressurized. An elastic body having an elastic force that reciprocates in and out of the insertion groove as the center is released; And it is continuously formed on one surface of the second flange along the circumferential direction, disposed so as to cover the opening of the insertion groove, coupled to the elastic body and interlocked with the elastic body, the first flange and the second flange When combined, a pipe cleaning device with improved airtightness including a sealing member disposed between the first flange and the second flange may be provided.

The sealing member is continuously formed on one surface of the second flange along the circumferential direction, is disposed to cover the opening of the insertion groove, is supported by the central portion of the elastic body, and the first flange and the second flange are A sealing body having one surface in close contact with the first flange and the other surface in close contact with the second flange when coupled; And it may include a coupling portion formed to extend and protrude from the center of the sealing body toward the center of the elastic body and coupled to the center of the elastic body.

The center of the elastic body is formed in the shape of twin peaks with an accommodation space formed at the center, the sealing body is supported by the twin peaks formed in the center of the elastic body, and the coupling part is press-fitted into the accommodation space formed in the center of the elastic body. It may include a protrusion formed to protrude outward at the end so that it is fitted.

The sealing body and the coupling part may include a core material (B) and a covering material (C) for sealing coated on the core material.

The core material (B) is one or two selected from steel or Mg, Ca, Al, Sn, Ti, Zr, Hf, Fe, Co, Ni and Cu amorphous metals. It is an alloy material of at least one kind, and the covering material for sealing is from the group consisting of rubber, teflon, silicone, polyamide, polyarylene ether, epoxy acrylate, non-conjugated polyene, polysiloxane, phenylene ether oligomer and styrene-butadiene block copolymer which one is selected; or a copolymer or blend of two or more.

The coating material for sealing (C) may be a blending copolymer of non-conjugated polyene, polysiloxane, and phenylene ether oligomer.

The non-conjugated polyene may be a compound represented by Formula 1 below, the polysiloxane may be a compound represented by Formula 2 below, and the phenylene ether oligomer may be a compound represented by Formula 3 below.

[Formula 1]

[Formula 2]

[Formula 3]

In the formula, R _a and R _b are the same as or different from each other, are each independently hydrogen or C _1-6 alkyl, R ₁ are each independently C _1-6 alkyl or a phenyl group; R ₂ is hydrogen or C _1-6 alkyl; R ₃ is C _1-10 alkyl or oxygen; R ₄ , R ₅ , R ₆ , R ₇ , R ₈ , R ₉ , R ₁₀ and R ₁₁ are the same as or different from each other, and are each independently hydrogen, halogen, C _1-6 alkyl or phenyl, wherein R ₄ , R ₅ , R ₆ , R ₇ , R ₈ , R ₉ , R ₁₀ and R ₁₁ are halogen; R ₁₂ is cyano, oxiranylmethyl or ethenylmethyl; Y is dimethylphenyl or trimethylphenyl; n is an integer from 0 to 10, p and q are integers from 0 to 10, and r and s are integers from 0 to 30.

An aramid fiber or aramid fabric layer may be further included between the core material (B) and the sealing covering material (C).

Doedoe installed on the outer surface of the second flange to be spaced apart from each other along the circumferential direction, protruding from the outer surface of the second flange in the direction of the first flange, the inner surface is aligned formed inclined with respect to the outer surface of the second flange The unit further includes, when the first flange and the second flange are coupled, the first flange is relative to the second flange in a state in which an outer surface of the first flange is in contact with an inner surface of the alignment unit. It is moved so that the positions of the first flange and the second flange may be mutually aligned.

In the embodiment of the present invention, by detachably coupling the sealing unit to the flange of the pipe body, it is possible to prevent the sealing unit from being moved or the sealing unit being separated while coupling the pipe and the pipe body, such as a water supply pipe. possible.

In addition, in the embodiment of the present invention, since the sealing unit is coupled to the flange of the pipe body side, it is possible to prevent the sealing unit from being separated while coupling the pipe and the pipe body, thereby reducing construction time.

In addition, in the embodiment of the present invention, it is possible to check whether the tightening force of the bolt is maintained uniformly over the entire flange by visually checking the position of the elastic body while coupling the pipe and the pipe body, such as a water supply pipe.

In addition, the embodiment of the present invention can easily and quickly align the pipe and the pipe body by providing an alignment unit on the flange of the pipe body side, thereby reducing work manpower and construction time.

1 is a combined perspective view showing a state in which a pipe cleaning device with improved airtightness according to the present invention is coupled to a pipe.
Figure 2 is an exploded perspective view showing a pipe cleaning device with improved airtightness according to the present invention.
3 is an enlarged cross-sectional view showing a state of use of an alignment unit according to the present invention.
Figure 4 (a) is an enlarged cross-sectional view showing the use state of the sealing unit and the elastic body when the elastic body is released in accordance with the present invention.
Figure 4 (b) is an enlarged cross-sectional view showing the use state of the sealing unit and the elastic body when the elastic body is pressed according to the present invention.
5 is a view showing the construction operation of the pipe cleaning device with improved airtightness according to the present invention.

In order to fully understand the present invention and the advantages in operation of the present invention and the objects achieved by the practice of the present invention, reference should be made to the accompanying drawings illustrating preferred embodiments of the present invention and the contents described in the accompanying drawings.

Hereinafter, the present invention will be described in detail by describing preferred embodiments of the present invention with reference to the accompanying drawings. Like reference numerals in each figure indicate like members.

1 is a combined perspective view showing a state in which a pipe line cleaning device with improved airtightness according to the present invention is coupled to a pipe, Figure 2 is an exploded perspective view showing a pipe line cleaning device with improved airtightness according to the present invention, and FIG. Fig. 4 (a) is an enlarged cross-sectional view showing the state of use of the sealing unit and the elastic body when the elastic body is released from pressure according to the present invention, and Fig. 4 (b) is an enlarged cross-sectional view showing the used state of the alignment unit according to the present invention. It is an enlarged cross-sectional view showing the use state of the sealing unit and the elastic body when the elastic body is pressed according to.

1 to 4 (b), the pipe cleaning device 100 with improved airtightness according to the present invention is coupled to a pipe 10 such as a water supply pipe buried in the ground and has an inlet or outlet 119 on one side. The outer surface of the formed tube body 110, the cover 130 installed on the inlet or outlet 119 of the tube body 110 and covering the inlet or outlet 119, and the second flange 112 on the side of the tube body 110 An alignment unit 150 installed at a predetermined interval in the circumferential direction to align the positions of the first flange 11 on the pipe 10 side and the second flange 112 on the pipe body 110 side, When coupled to the second flange 112 of the pipe body 110 side coupled to the first flange 11 of the pipe 10 side and the pipe 10 and the pipe body 110 are coupled, the first flange 11 And a sealing unit 170 for sealing between the second flange (112).

In this embodiment, the pipe 10 is described by taking a water supply pipe buried in the ground as an example, but the scope of the present invention is not limited thereto, and any pipe 10 through which fluids such as water supply and gas pass can be used. possible.

The pipe body 110 according to this embodiment interconnects the pipes 10 disposed on both sides. The pipe body 110 has a connection part 111 interconnecting the pipes 10 buried in the ground disposed on both sides, and an inlet or outlet 119 connected to the connection part 111 and inputting or discharging pigs on one side. and includes a guide 118 for guiding input or output of pigs.

In this embodiment, the pipe 10 and the connecting portion 111 are bolted to each other with the first flange 11 on the pipe 10 side and the second flange 112 on the connecting portion 111 side. Accordingly, second flanges 112 coupled to the first flange 11 on the side of the pipe 10 are provided at both ends of the connecting portion 111, respectively.

And the guide part 118 is connected to the connection part 111 and is disposed long in the height direction. An inlet or outlet 119 through which pigs are put in or out is formed on the upper part of the guide part 118 to guide the inlet or outlet of pigs. In this embodiment, the guide part 118 is shown to be connected vertically to the connection part 111, but in order to facilitate the input and output of the pig, the guide part 118 can be connected to the connection part 111 with a gentle slope.

When two pipe bodies 110 are disposed at a predetermined interval with the pipe 10 interposed therebetween, the pig introduced into the inlet 119 of one pipe body 110 connects the pipe body 110 and the pipe 10. After being moved along, the inner walls of the tube bodies 110 and the pipe 10 are cleaned while being discharged through the outlet 119 of the remaining tube bodies 110.

Meanwhile, while washing the inner wall of the pipe 10, the cover 130 covering the inlet or outlet 119 of the guide part 118 is removed, and when the inner wall of the pipe 10 is cleaned, the cover 130 ) to cover the inlet or outlet 119 of the guide part 118 to prevent foreign substances from entering the tube body 110 and the pipe 10. In addition, although not shown, a ring to which a wire or the like used to lift the tube body 110 can be fastened may be installed on the cover 130 .

On the other hand, in order to couple the pipe body 110 to the pipe 10, the pipe body 110 is moved adjacent to the pipe 10 buried in the ground and a plurality of first bolt holes H1 formed in the first flange 11 and the positions of the plurality of second bolt holes H2 formed in the second flange 112 should be aligned.

Conventionally, it is not easy to align the first flange 11 and the second flange 112, so there is a problem in that a lot of manpower and time are required.

Therefore, in the present embodiment, it is possible to easily align the first flange 11 and the second flange 112 to reduce man-hours and time, and to accurately align the first flange 11 and the second flange 112. An alignment unit 150 is provided on the outer surface of the second flange 112 so as to be.

The alignment unit 150 according to the present embodiment quickly and accurately matches the positions of the pipe 10 and the pipe body 110 in coupling the pipe body 110 to the pipe 10 buried in the ground.

As shown in FIGS. 2 and 3 , a plurality of alignment units 150 are installed spaced apart from each other along the circumferential direction on the outer surface of the second flange 112 provided on the connection part 111 . In this embodiment, the alignment units 150 are shown to be installed on the outer surface of the second flange 112 at 90 degree intervals, but are not limited thereto and a plurality of alignment units 150 are installed on the outer surface of the second flange 112. can be installed at various angular intervals.

The alignment unit 150 protrudes from the outer surface of the second flange 112 toward the first flange 11 and has an inner surface 151 inclined with respect to the outer surface of the second flange 112 . That is, the inner surface 151 of the alignment unit 150 is inclined to be away from the center of the second flange 112 toward the end of the alignment unit 150 .

Therefore, in order to couple the first flange 11 and the second flange 112, when the pipe 10 and the pipe body 110 are placed in place and the pipe body 110 is moved in the direction of the pipe 10, the first flange With the outer surface of (11) in contact with the inner surface (151) of the alignment unit (150), the first flange (11) is relatively moved in the direction of the second flange (112) so that the first flange (11) and the second flange are in contact with each other. The positions of (112) are mutually aligned.

In addition, when the first flange 11 and the second flange 112 are mutually coupled, airtightness must be maintained between the first flange 11 and the second flange 112 . To this end, in this embodiment, at least one sealing unit 170 detachably coupled to one surface of the second flange 112 opposite to the first flange 11 is provided.

The sealing unit 170 according to the present embodiment is not only used for sealing the pipe 10 buried in the ground and the pipe body 110 of the pipe cleaning device 100 with improved airtightness, but also the mutual coupling of the flanges and the sealing between the flanges. It can be used in any case as long as it is used for sealing.

2, 4 (a) and 4 (b), the sealing unit 170 is the first flange 11 when the first flange 11 and the second flange 112 are coupled And is interposed between the second flange 112 to seal between the first flange 11 and the second flange (112).

The sealing unit 170 is detachably coupled to the insertion groove 115 formed on one surface of the second flange 112, and when the first flange 11 and the second flange 112 are coupled, the first flange 11 ) and the second flange 112 are sealed.

In this embodiment, since the sealing unit 170 is coupled to one surface of the second flange 112, the position of the sealing unit 170 is prevented from being changed while the first flange 11 and the second flange 112 are coupled. It is possible to perform airtight construction and to prevent the sealing unit 170 from being separated, thereby reducing the number of man-hours and construction time.

In this embodiment, the insertion groove 115 is formed along the circumferential direction on one side of the second flange 112. And as shown in Figure 2, two insertion grooves 115 are spaced apart from each other in the radial direction.

In this embodiment, the insertion groove 115 is shown in a ring shape continuously formed along the circumferential direction on one side of the second flange 112, but the scope of the present invention is not limited thereto and the insertion groove 115 is an arc. It may be formed in a shape and spaced apart from one side of the second flange 112 along the circumferential direction.

Specifically, the sealing unit 170 has a central portion protruding outward from the insertion groove 115 and both ends in the width direction are inserted into the insertion groove 115, but pressurized and released, so that the central portion protrudes from the inside and outside of the insertion groove 115. An elastic body 171 having an elastic force reciprocating to the outside and continuously formed on one surface of the second flange 112 along the circumferential direction, disposed to cover the opening 116 of the insertion groove 115, and the elastic body 171 The sealing member 172 coupled to the elastic body 171 and interlocked and disposed between the first flange 11 and the second flange 112 when the first flange 11 and the second flange 112 are coupled. ).

The elastic body 171 may be a material having elastic force and capable of adjusting the elastic strength, and the scope of the present invention is not limited thereto, and any material having elastic force and capable of adjusting the elastic strength may be used.

In one embodiment of the present invention, the elastic body 171 may be made of a metal material, for example, a steel material or an amorphous metal material.

The amorphous metal material is one or two or more alloys selected from Mg-based, Ca-based, Al-based, Sn-based, Ti-based, Zr-based, Hf-based, Fe-based, Co-based, Ni-based, and Cu-based amorphous metals. can The type and content ratio of metals used in alloy manufacturing are related to the mechanical properties to be achieved and can be adjusted according to the desired strength and elasticity.

On the other hand, amorphous metal is produced by heating the metal to make it into a liquid state, and then rapidly cooling it at a fast cooling rate of 10 ⁵ to 10 ⁶ K/sec or more to solidify it. Unlike crystalline alloys, these amorphous alloys may have improved properties of high elasticity due to their structural characteristics in which atoms are randomly arranged, and exhibit rapid recovery after elastic deformation. In particular, since the elastic region is maintained even during large deformation or repeated deformation, surface defects do not occur, and the existing surface conditions can be maintained for a long time. For example, in a bending fatigue test, a zirconium-based amorphous metal specimen has better bending fatigue characteristics than a control SUS specimen. Specifically, in the bending fatigue test, the zirconium-based amorphous metal specimen according to the present invention exhibited deformation below the fatigue limit even in a repeated section in which deformation of the SUS specimen was confirmed to exceed the elastic limit, and it was confirmed that it had high elasticity and excellent fatigue characteristics. .

The surface of the metal material may be coated with a polymer selected from ultra-high molecular weight polyethylene (UHMWPE)-based resin, epoxy-based resin, polypropylene-based resin, urethane-based resin, acrylic resin, melamine-based resin, or combinations thereof. Since the polymer has excellent scratch resistance and exhibits high elasticity, it contributes to improving durability and elasticity of metal materials. The degree of elasticity and scratch resistance can be controlled by adjusting the content ratio of the resin added in the preparation of the polymer.

According to the present invention, the polymer may preferably be an ultra-high molecular weight polyethylene-based resin, a polypropylene-based resin, a melanin-based resin, or a combination thereof, particularly preferably a blending copolymer of an ultra-high molecular weight polyethylene-based resin and a melanin-based resin. In addition, the ratio of the ultra-high molecular weight polyethylene-based resin and the melanin-based resin may be added at 0.1 to 99.9% by weight: 99.9 to 0.1% by weight. In the case of coating with a blended copolymer of ultrahigh molecular weight polyethylene-based resin and melanin-based resin, it is particularly preferable because it has excellent scratch resistance even with a thin coating, improves elasticity of the elastic body, and has excellent indentation depth recovery rate.

The polymer may further include a dye, such as carbon black. Since the polymer coating layer to which carbon black is added tends to have a high indentation depth recovery rate and excellent scratch recovery properties compared to the polymer to which carbon black is not added, the high elasticity characteristics and durability of the elastic body 171 are improved.

In addition, the elastic body 171 may be formed in a ring shape or an arc shape to correspond to the ring-shaped or arc-shaped insertion groove 115 and coupled to the insertion groove 115 .

4 (a) and 4 (b), both ends in the width direction of the elastic body 171 have a shape bent toward the center to face each other, and the center of the elastic body 171 has an accommodation space in the center ( S) is formed in the shape of twin peaks (P). For example, the elastic body 171 may be formed in an “M” shape in which an accommodation space S is formed between twin rods P formed to have a rounded upper end. The elastic body 171 is formed symmetrically with respect to the center line in the width direction.

In addition, both ends of the elastic body 171 in the width direction are inserted into the insertion groove 115 and engaged with the opening 116 of the insertion groove 115, and the accommodation space S formed in the center of the elastic body 171 has a sealing ring to be described later. The coupling portion 176 of the member 172 is fitted.

As shown in FIG. 4 (a), when the central portion of the elastic body 171 is released, that is, before the first flange 11 and the second flange 112 are bolted together, or when the first flange 11 and the second flange 112 are 2 When no external force is applied to the center of the elastic body 171, such as when the bolted connection of the flange 112 is released, both ends in the width direction of the elastic body 171 are restored in a mutually approaching direction, and the center of the elastic body 171 is It protrudes to the outside of the insertion groove 115.

In addition, the width of the opening 116 of the insertion groove 115 such that both ends in the width direction of the elastic body 171 are engaged with the opening 116 of the insertion groove 115 in a state in which the central portion of the elastic body 171 is released ( W1) is formed smaller than the separation distance (W3) between both ends of the elastic body 171 in the width direction. And the width W2 of the bottom surface 117 of the insertion groove 115 is such that the center of the elastic body 171 is moved into the insertion groove 115 in a state in which the center of the elastic body 171 is pressed. ) is formed larger than the width W1 of the opening 116. For example, the insertion groove 115 may be formed in a trapezoidal shape in which the length of the upper side is smaller than the length of the lower side.

On the other hand, as shown in FIG. 4 (b), when the center of the elastic body 171 is pressed, that is, while the first flange 11 and the second flange 112 are bolted together, the center of the elastic body 171 When an external force is applied to, both ends in the width direction of the elastic body 171 contact the bottom surface 117 of the insertion groove 115 and are elastically deformed in a direction spaced apart from each other inside the insertion groove 115, and the elastic body 171 The center of the is moved to the inside of the insertion groove (115).

The sealing member 172 seals between the first flange 11 and the second flange 112 when the first flange 11 and the second flange 112 are bolted together.

The sealing member 172 is continuously formed on one surface of the second flange 112 along the circumferential direction, disposed to cover the opening 116 of the insertion groove 115, and supported by the central portion of the elastic body 171. And when the first flange 11 and the second flange 112 are coupled, one surface of the sealing member 172 opposite to the first flange 11 is in close contact with the first flange 11 and the other surface is the second flange. The sealing body 173 in close contact with (112) and the coupling part 176 formed to extend and protrude from the center of the sealing body 173 toward the center of the elastic body 171 and coupled to the center of the elastic body 171 include

The sealing body 173 is formed in a ring shape continuously formed on one surface of the second flange 112 along the circumferential direction. And since the sealing body 173 is disposed to cover the opening 116 of the insertion groove 115 formed on one surface of the second flange 112, the width W4 of the sealing body 173 is the opening of the insertion groove 115. It is formed larger than the width W1 of (116).

Therefore, when the sealing body 173 is coupled to the first flange 11 and the second flange 112, one surface opposite to the first flange 11 is in close contact with the first flange 11 and the second flange 112 The other surface opposite to ) is in close contact with the second flange 112 to seal between the first flange 11 and the second flange 112 .

The coupling part 176 is protruded from the center of the other surface of the sealing body 173 toward the center of the elastic body 171 . And the coupling part 176 is press-fitted into the accommodation space S formed in the center of the elastic body 171 and fitted.

As described above, since the center of the elastic body 171 is formed in the shape of a double rod (P) with an accommodation space (S) formed in the center, the end of the coupling part 176 is press-fitted into the accommodation space (S) and coupled to each other by being fitted. . At this time, a protrusion 177 protruding outward is formed at the end of the coupling portion 176 to prevent the end of the coupling portion 176 from being separated from the accommodation space (S).

As described above, since the coupling part 176 is press-fitted into the accommodation space S formed in the center of the elastic body 171, the other surface of the sealing body 173 is formed by the twin bar P formed in the center of the elastic body 171. supported

On the other hand, the sealing body 173 and the coupling part 176 constituting the sealing member 172 may be composed of a core material (B) having elasticity and a covering material (C) for sealing coated on the core material (B).

The core material (B) serves to maintain the shape of the sealing body 173 and the coupling part 176, and the core material (B) has elasticity, and any material that can adjust the elastic strength can be used. In one embodiment of the present invention, the core material (B) may be a metal material, for example, it may be a steel material or an amorphous metal.

The steel material may be a known steel material having elasticity, and the amorphous metal material may be Mg-based, Ca-based, Al-based, Sn-based, Ti-based, Zr-based, Hf-based, Fe-based, Co-based, Ni-based and It may be one or two or more alloys selected from Cu-based amorphous metals. The type and content ratio of metals used in alloy manufacturing are related to the mechanical properties to be achieved and can be adjusted according to the desired strength and elasticity. Advantages of the amorphous metal material are as presented above.

Sealing coating material (C) is any one selected from the group consisting of rubber, teflon, silicone, polyamide, polyarylene ether, epoxy acrylate, non-conjugated polyene, polysiloxane, phenylene ether oligomer and styrene-butadiene block copolymer ; or a copolymer or blend of two or more.

In one embodiment of the present invention, the coating material for sealing (C) may be a blending copolymer of non-conjugated polyene, polysiloxane and phenylene ether oligomer.

The non-conjugated polyene is a compound represented by the following formula (1)

[Formula 1]

In the formula, R _a and R _b are the same as or different from each other, each independently represent hydrogen or C _1-6 alkyl, and n is an integer from 0 to 10.

The polysiloxane is a compound represented by Formula 2 below,

[Formula 2]

In the formula, R ₁ is each independently a C _1-6 alkyl or phenyl group; R ₂ is hydrogen or C _1-6 alkyl; R ₃ is C _1-10 alkyl or oxygen; p and q are integers from 0 to 10.

The phenylene ether oligomer is a compound represented by Formula 3 below,

[Formula 3]

R ₄ , R ₅ , R ₆ , R ₇ , R ₈ , R ₉ , R ₁₀ and R ₁₁ are the same as or different from each other, and are each independently hydrogen, halogen, C _1-6 alkyl or phenyl, wherein R ₄ , R ₅ , R ₆ , R ₇ , R ₈ , R ₉ , R ₁₀ and R ₁₁ are halogen;

R ₁₂ is cyano, oxiranylmethyl or ethenylmethyl;

Y is dimethylphenyl or trimethylphenyl;

r and s are integers from 0 to 30.

In one embodiment of the present invention, the covering material (C) for sealing may include 5 to 89.9% by weight of non-conjugated polyene, 5 to 89.9% by weight of polysiloxane, and 5 to 89.9% by weight of phenylene ether oligomer.

When the sealing coating material (C) is a blended copolymer of non-conjugated polyene, polysiloxane, and phenylene ether oligomer, it has excellent heat resistance, acid resistance, and resistance to heat resistance, excellent long-term stability, and excellent elastic resilience compared to conventional silicone rubber. It is particularly preferable as a covering material for the sealing member.

As other components, additives may be further included to control mechanical properties such as elasticity, tensile strength, tensile breaking strength, and abrasion resistance of the covering material. Examples of additives include reinforcing agents such as carbon black, silicic acid, silica, and inorganic fillers; emollient; anti-aging agent; processing aid; A crosslinking agent and the like may be included, and a known compound for preparing a conventional elastic polymer may be used.

In one embodiment of the present invention, the reinforcing agent may be carbon black. Compared to the polymer without carbon black, the carbon black-added coating material showed excellent indentation depth recovery rate and showed deformation below the fatigue limit in the bending fatigue test.

In one embodiment of the present invention, R ₁₂ may be oxiranylmethyl, and in the case of oxiranylmethyl, compression set is low and long-term sealing property is excellent.

Meanwhile, an aramid fiber or an aramid fabric layer made of aramid fibers may be inserted between the core material (B) and the covering material (C) for sealing. The aramid fabric may have a surface modified with chlorosulfonated polyethylene so as to hybridize with the core material and the covering material. Insertion of the aramid fiber or aramid fabric layer may improve adhesion between the core material (B) and the sealing covering material (C), and improve elasticity and restoring force.

The aramid fibers may be single aramid yarns or aramid-carbon nanotube composite yarns made by twisting together aramid yarns and carbon nanotube fibers. In the case of aramid-carbon nanotube composite yarns, elasticity and elastic recovery are more excellent than when aramid yarns are used alone, which is preferable.

In particular, in combining the first flange 11 and the second flange 112, since the sealing body 173 should be disposed to cover the opening 116 of the insertion groove 115, the upper portion of the sealing body 173 In the case of bending downward by its own weight, since a lot of man-hours are required in combining the first flange 11 and the second flange 112, the inside of the sealing body 173 is maintained to maintain the shape of the sealing body 173. A core material (B) is provided.

In addition, since the coupling part 176 and the elastic body 171 are coupled to interlock the sealing member 172 and the elastic body 171, the coupling part 176 is prevented from being separated from the elastic body 171 and the coupling part 176 and In order to secure the coupling of the elastic body 171, a core material B is provided inside the coupling part 176.

Meanwhile, since the sealing member 172 and the elastic body 171 are coupled to each other, the sealing member 172 and the elastic body 171 are interlocked with each other. Looking at the state of the sealing member 172 and the elastic body 171 before and after the bolt coupling of the first flange 11 and the second flange 112 is as follows.

Figure 4 (a) shows the state of the sealing member 172 and the elastic body 171 before bolting the first flange 11 and the second flange 112, the coupling portion 176 of the sealing member 172 ) is fitted into the accommodation space (S) formed in the center of the elastic body (171) to constitute the sealing unit (170).

Since no external force is applied to the elastic body 171 before the first flange 11 and the second flange 112 are bolted together, the center of the elastic body 171 protrudes out of the insertion groove 115, and the sealing body interlocks therewith. (173) is also spaced from one side of the second flange (112). In this embodiment, before bolting the first flange 11 and the second flange 112, the cross-sectional shape of the sealing body 173 in the width direction is such that the central portion of the sealing body 173 protrudes toward the first flange 11. It was made to have a convex shape.

Figure 4 (b) shows the state of the sealing member 172 and the elastic body 171 when the first flange 11 and the second flange 112 are bolted together, the first flange 11 and the second When an external force is applied to the elastic body 171 by bolting the flange 112, both ends of the elastic body 171 in the width direction are in contact with the bottom surface 117 of the insertion groove 115, and mutual contact occurs inside the insertion groove 115. As the center of the elastic body 171 is moved to the inside of the insertion groove 115 as it is elastically deformed in the direction away from it, both ends of the sealing body 173 in the width direction are in close contact with one surface of the second flange 112 in conjunction therewith. As it develops in the width direction, one side of the sealing body 173 is in close contact with the first flange 11 and the other side is in close contact with the second flange 112 to seal between the first flange 11 and the second flange 112. let it

Conventionally, when the first flange 11 and the second flange 112 are bolted together, it is not possible to check the tightening state of the bolts, which causes leaks when the bolts are poorly tightened. Therefore, in this embodiment, in bolting the first flange 11 and the second flange 112, there is no leakage and the tightening force of the bolt is maintained uniformly throughout the first flange 11 and the second flange 112. It was possible to visually confirm that this was happening.

That is, when the plurality of bolts fastened to the first flange 11 and the second flange 112 are tightened to a certain pressure or more, the center of the elastic body 171 is moved into the insertion groove 115, and the sealing body ( 173) is in close contact with one surface of the second flange 112 while being developed in the width direction.

However, when the tightening force of the bolts does not reach a certain pressure in one area of the first flange 11 and the second flange 112, the center of the elastic body 171 does not move into the insertion groove 115 or the sealing body 173 is not fully developed, so the entire sealing body 173 does not come into close contact with one surface of the second flange 112. In this case, the operator can visually check the corresponding area and tighten the bolts so that the tightening force of the bolts in the corresponding area exceeds a certain pressure, so that the tightening force of all bolts exceeds a certain pressure, thereby preventing leakage.

In addition, since the pressure range in which the sealing body 173 is deployed can be adjusted according to the tightening force of the bolt by adjusting the elastic strength of the elastic body 171, it can be confirmed that the tightening force of the bolt is more than a certain pressure from the elastic strength of the elastic body 171. there is.

The construction operation of the pipe cleaning device 100 with improved airtightness according to the present invention configured as described above will be described as follows.

5 is a view showing the construction operation of the pipe cleaning device with improved airtightness according to the present invention.

As shown in FIG. 5 (a), the cover 130 is installed on the inlet or outlet 119 formed in the guide part 118, and sealing is made in the insertion groove 115 formed on one side of the second flange 112. Unit 170 is coupled. In addition, a plurality of alignment units 150 are installed on the outer surface of the second flange 112 to be spaced apart from each other in the circumferential direction. Then, the pipe body 110 to which the cover 130, the sealing unit 170, and the alignment unit 150 are coupled is positioned in the space between the pipes 10 buried in the ground.

On the other hand, unlike the above, after placing the pipe body 110 in which the cover 130 is installed in the space between the pipes 10 to be buried in the ground, the sealing unit 170 and the alignment unit 150 are installed in the second flange. (112) can also be installed.

And, as shown in FIG. 5 (b), the tube body 110 is moved in the direction of the pipe 10 in order to bolt-join the first flange 11 and the second flange 112. At this time, the outer surface of the first flange 11 is moved relative to the inner surface 151 of the plurality of alignment units 150 installed on the outer surface of the second flange 112 in a state of contact with the first flange 11 and the second flange 11. The two flanges 112 are mutually aligned.

And as shown in Figure 5 (c), in a state where the first flange 11 and the second flange 112 are mutually aligned, a bolt is formed on the second flange 112 from the other side of the second flange 112. Bolts are fastened by penetrating the second bolt hole H2 and the first bolt hole H1 formed in the first flange 11 . While bolting the first flange 11 and the second flange 112, the central portion of the elastic body 171 is pressed and moved into the insertion groove 115, and the sealing body 173 is of the second flange 112. It develops laterally on one side.

The operator checks the state in which the elastic body 171 is moved into the insertion groove 115 and the sealing body 173 is deployed on one side of the second flange 112, and the first flange 11 and the second flange 112 ) ensure that the tightening force of the bolt is maintained uniformly throughout.

As such, the present invention is not limited to the described embodiments, and it is obvious to those skilled in the art that various modifications and variations can be made without departing from the spirit and scope of the present invention. Therefore, such modifications or variations should be included within the scope of the claims of the present invention.

100: pipe cleaning device 110: pipe body
111: connection part 118: guide part
130: cover 150: alignment unit
170: sealing unit 171: elastic body
172: sealing member 173: sealing body
176: coupling part 177: protrusion

Claims (9)

A pipe body having a connection part having a second flange coupled to the first flange of the pipe side buried in the ground at both ends, and a guide part connected to the connection part and guiding the pig to be put in or discharged; and
Doedoe coupled to the insertion groove formed along the circumferential direction on one surface of the second flange opposite to the first flange, when the first flange and the second flange are coupled between the first flange and the second flange Including a sealing unit for sealing,
The sealing unit,
an elastic body having a central portion protruding outward from the insertion groove and having both ends in the width direction inserted into the insertion groove, and having an elastic force reciprocating in and out of the insertion groove as the central portion is pressed and released; and
It is continuously formed on one surface of the second flange along the circumferential direction, is disposed to cover the opening of the insertion groove, is coupled to the elastic body and interlocks with the elastic body, and the first flange and the second flange are coupled. In the case of being, it includes a sealing member disposed between the first flange and the second flange,
The sealing member,
It is continuously formed on one surface of the second flange along the circumferential direction, is disposed to cover the opening of the insertion groove, is supported by the central portion of the elastic body, and when the first flange and the second flange are coupled a sealing body having one surface in close contact with the first flange and the other surface in close contact with the second flange; and
Conduit cleaning device with improved airtightness including a coupling part formed to extend and protrude from the center of the sealing body toward the center of the elastic body and coupled to the center of the elastic body. According to claim 1,
The center of the elastic body is formed in the shape of twin peaks with an accommodation space formed in the center,
The sealing body is supported by a pair of rods formed in the center of the elastic body,
The coupling part includes a protrusion formed to protrude outward at an end so that it is press-fitted into the accommodation space formed in the center of the elastic body and fitted. According to claim 1,
The sealing body and the coupling part include a core material (B) and a sealing covering material (C) coated on the core material. delete delete delete delete delete delete

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