KR102058076B1 - safety blind cover having expansion joint - Google Patents

Abstract

The safety blender cover integrated expansion joint of the present invention is provided with a first and a second flange portion coupled to an end portion of an adjacent pipe, and the first and second flange portions are installed and expanded to absorb a displacement amount due to thermal expansion of a pipe. And a blind portion installed on at least one side of the first and second flange portions to block the flow of gas.

Description

Safety blind cover having expansion joint {safety blind cover having expansion joint}

The present invention relates to an expansion joint, and more particularly to a safety blender cover integral expansion joint having a blender that can block the flow of gas.

In general, pipelines installed in many fields such as furnaces, power plants, petrochemicals, refrigeration, metallurgy, nuclear power, air conditioning systems, aviation, construction, automobiles, water treatment, incinerators, etc. are thermally expanded according to the temperature of the fluid passing through the pipeline or the ambient temperature. In order to absorb this amount of thermal expansion, expansion joints are used in the pipeline.

An example of such an expansion joint is disclosed in Korean Patent Registration No. 0307307. Another example of a expansion joint is disclosed in registered utility model 0224032.

In addition, Korean Patent Registration No. 10-1170808 discloses an expansion joint.

The published expansion joint includes first and second coupling portions respectively engaging with end portions of adjacent pipes; A bellows interconnecting the first coupling portion and the second coupling portion; A bellows fixing part for fixing both ends of the bellows to the first coupling part and the second coupling part, respectively; And a position fixing part for preventing a variation in a gap between the first coupling part and the second coupling part due to thermal expansion of the bellows.

The Republic of Korea Patent Registration No. 101329983 is a corrugated pipe-type non-metallic expansion joint is published, the Republic of Korea Patent Publication No. 1020180019397 has an expansion joint. In addition, Korean Patent No. 101305472 discloses a pressure balance type expansion joint.

Conventional expansion joins configured as described above can absorb the expansion and contraction in the longitudinal direction of the pipe, but there is a risk of safety accident because it can not block the gas in an emergency.

Republic of Korea Patent Registration No. 0307307 Republic of Korea Patent Registration No. 101329983 Republic of Korea Patent Publication No. 1020180019397

The present invention is to solve the problems as described above, it is possible to absorb the amount of thermal expansion, that is, the amount of thermal expansion displacement due to thermal expansion, depending on the temperature of the fluid passing through the pipe or the surrounding temperature, the safety accident by blocking the gas in the emergency The purpose is to provide a safety blender cover integrated expansion joint that can be prevented.

Another object of the present invention to uniformly act on the bellows deformation force due to thermal expansion or contraction of the COG tube, LDG tube, BFG tube, blower tube, etc. so that the lifting and lowering of the blender cover for structural safety and gas blocking It is to provide an expansion joint with a safety blender cover integrated to prevent malfunction due to blocking by guiding.

According to an embodiment of the present invention, a safety blender cover integrated expansion joint is provided with first and second flange portions coupled to end portions of adjacent pipes, and the first and second flange portions are installed according to thermal expansion of a pipeline. It is characterized in that it comprises a stretchable portion for absorbing the displacement amount, and a blind portion provided on at least one side of the first and second flange portions to block the flow of gas.

In the present invention, the first and second flange portion is fixed to both ends of the first and the first pipe member is fixed to the first flange portion, one side is installed on the second flange portion so as to correspond to the first pipe member. A third pipe member provided between the second pipe member and the first and second pipe members, a first bellows portion provided at an end of the first pipe member and the third pipe member to connect them, and the third pipe member. A second bellows portion provided at the end of the pipe member and the second pipe member to connect the first bellows portion, and a first stretch limiting portion installed on the first pipe member and the third pipe member to define the stretch displacement of the first bellows; And a second expansion and limiting part installed on the intermediate ring member and the second pipe member to define the expansion and contraction displacement of the second bellows.

In addition, the elastic part has a first protective sleeve for supporting the first bellows to one side end is fixed to the face of the third pipe member extending to the inner peripheral surface side of the first pipe member, and one side on the inner peripheral surface of the second pipe member An end is fixed and has a second protective slide extending toward the inner peripheral surface side of the third pipe member to protect the second bellows.

The blind portion is provided with a blind sealing plate installed in the first flange portion, a blind connecting plate having a blind guide groove coupled with the blind sealing plate to guide and support the blind cover, and supported by the blind sealing plate and the blind connecting plate. And a guide frame having a blind cover guide part extending along the blind guide groove, a blind cover moving along the blind guide groove and the blind cover guide part to block the hollow part of the stretchable part, and the blind cover and the blind guide groove. An elevating driving portion for elevating along the cover guide portion is provided.

The safety blender cover integrated expansion joint of the present invention is installed between the tubes forming a pipeline for transporting gas or air having a high or low temperature to absorb thermal expansion due to thermal expansion or thermal contraction of the tubes. Supply can be cut off. In particular, since the gas supply is blocked by the blind cover, the structure is relatively simple, and the design freedom of the means for blocking can be increased.

In addition, since the expansion joint of the present invention is covered by protective sleeves on the inner circumferential surface of the bellows, it is possible to prevent the bellows from being damaged by the conveyed material or the uneven internal pressure that is carried on the gas.

1 is a perspective view of a safety blender cover integrated expansion joint according to the present invention,
2 is a cross-sectional view of the safety blender cover integrated expansion joint shown in FIG.
Figure 3 is a perspective view showing an extract of the stretch portion of the safety blender cover integrated expansion joint according to the present invention,
4 is a cross-sectional view of the expansion unit shown in FIG.

The safety blender cover integrated expansion joint according to the present invention is installed in various pipes for transferring hot gas, cold and hot air in the fields of blast furnace, power plant, petrochemical, metallurgical plant, nuclear power, etc. to absorb thermal expansion amount. One embodiment thereof is shown in FIGS. 1 to 3.

Referring to the drawings, the safety blender cover integrated expansion joint 10 according to the present invention is installed between the pipes constituting the pipe, the first and second flange portions 11, 12 for connection with the pipes It is provided between the first and second flanges (11, 12) is provided with a stretchable portion 20 for absorbing the displacement amount due to the thermal expansion of the pipe. In addition, the first flange 11 constituting the expansion and contraction portion 10 is provided with a blind portion 50 for blocking the flow of gas, cold and hot air in an emergency.

The operation of the safety blender cover integrated expansion joint 10 according to the present invention configured as described above will be described in more detail as follows.

The stretchable part 20 of the safety blender cover integrated expansion joint 10 according to the present invention is provided with one side of the first pipe member 21 in the first flange part 11, and coaxially with the first part. One side of the second pipe member 22 is installed at the two flange portions 12. A third pipe member 23 is coaxially installed with the first and second pipe members 21 and 22 between the first and second pipe members 21 and 22. Both ends of the first bellows 31 which can be stretched and coupled are joined to the outer circumferential surfaces of the corresponding ends of the first pipe member 21 and the third pipe member 23, so that the first and third pipe members 21 and 23 are coupled to each other. Are elastically connected, and end portions of the third pipe member 23 and the second pipe member 22 corresponding to each other are elastically connected to both ends of the second bellows 35.

And between the first tube member 21 and the third tube member 23 is provided with a first expansion limit portion 41 for limiting the amount of expansion and contraction of the first bellows, the third tube member 23 ) Between the second pipe member 22 and the second expansion and contraction portion 45 to limit the amount of expansion and displacement of the second bellows 35 is provided.

The first and second expansion limit portions 41 and 45 have substantially the same structure. The first expansion and contraction portion 41 includes a plurality of first and second holder members 42 and 43 at predetermined intervals along the circumferential direction on the outer circumferential surfaces of the first pipe member 21 and the third pipe member 23. ) Are installed to correspond to each other, and are fixed to the ends of the first and second holder members 42 and 43 by the first set bolt 44. The second expansion and contraction portion 45 includes a plurality of third and fourth holder members 46 installed at predetermined intervals along the circumferential direction on the outer circumferential surfaces of the second pipe member 22 and the third pipe member 23. ) 47 are installed to correspond to each other, and is fixed to the end of the second and third holder member 46, 47 by a second set bolt (48).

The first and second bellows 31 and 35 may be formed by bonding a plurality of sheets made of a fabric material to block high heat. And the bellows made of the fabric material may be installed a plurality of inner ring to take the form inside.

One end portion of the expansion and contraction portion 20 is fixed to an inner circumferential surface of the third pipe member 23 and extends toward an inner circumferential surface of the first pipe member to assist the first bellows 36. It is provided, one end is fixed to the inner surface of the second pipe member 22 and extending to the inner peripheral surface side of the third pipe member 23 is provided with a second protective sleeve 37 to protect the second bellows do.

On the other hand, the blind portion 50 is coupled to the first flange 11 to block the gas flowing through the integral expansion joint, an embodiment is shown in FIG.

Referring to the drawings, the blind part 50 is coupled to the blind sealing plate 51 installed on the first flange part 11 and the blind sealing plate 51 to guide the blind cover 70. A blind connection plate 52 having a blind guide groove 53 therein is formed. The blind sealing plate 51 and the blind connecting plate 52 have a structure in which through-holes 51a and 52a are connected to a hollow part through which gas of the stretchable part passes. The blind guide groove 53 is formed parallel to each other on the left and right sides, and is formed in an arc shape on the lower side. This arc-shaped shape is preferably formed with a radius larger than the radius of the hollow portion so that the blender cover 70 can block the hollow portion.

A guide frame 55 is installed on the blind sealing plate 51 and the blind connecting plate 52 which are coupled to each other. The guide frame 55 includes first and second frame members 55a and 55b installed at both sides of the blind sealing plate 51 and the braid connection plate 52, and the first and second frame members 55a. And a third frame member 55c provided at the upper end of the 55b.

In addition, a blind cover guide unit 60 is installed on the mutually corresponding sides of the first and second frame members 55a and 55b to guide the blind cover 70 that is elevated along the blind guide groove 53. . The blind cover guide part 60 includes a plurality of guide rollers 61 and 62 in contact with both sides of the blind cover 70 and arranged along the first and second guide frames 55a and 55b.

The guide frame 55 is provided with an elevating driving unit 75 for elevating the blind cover 70.
The elevating driving unit 75 includes a winch 76 installed on one side of the first or second frame members 55a and 55b and a pulley 77 installed on the third frame member 55c. . The rope 78 wound around the winch 76 is guided by guide rollers and is coupled to the upper portion of the blind cover 70 by the pulley 77. Therefore, according to the operation of the winch 76, the blind cover 70 is lowered or raised. The winch may be an electric or manual position. The descending of the blind cover 70 is made by its own weight.

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On the other hand, a limit stopper 80 is installed on the upper surface of the blind cover 70 to prevent the third frame member 53c from coming in contact with the blind cover 70 when raised.

Referring to the operation of the safety blender cover integrated expansion joint according to the present invention configured as described above are as follows.

The expansion joint 10 according to the present invention configured in accordance with the present invention is installed in a blower pipe, a COG pipe, an LDG pipe, a BFG pipe, or a hot gas flowing pipe for supplying hot air to a blast furnace of a steel mill, according to the thermal expansion of the pipe. It will absorb the amount of expansion and displacement.

A pipe for supplying hot air or gas to the second flange portion 12 and the first flange portion 11 of the expansion and contraction portion 20 is connected to form a single hot air pipe path.

In this state, when the tube is thermally expanded by the supply of hot air, the first tube member 21 connected to the first flange portion 11 and the second tube member 22 connected to the second flange portion 12 are connected to the first tube member 22. The relative movement relative to the tube member 21, respectively, is installed between the third tube member 23 and the first tube member 21 and the third tube member 23 and the second tube member 22 As the first and second bellows 31 and 35 are expanded and contracted, the displacement amount due to the thermal expansion of the pipe forming the pipe, that is, the blowing pipe, is absorbed as the first and second bellows 31 and 35 are expanded or expanded. At this time, the first protective sleeve 37 and the second tube member 22 which are installed on the third tube member 23 and extend toward the first tube member 21 are fixed to the third tube member 23. Since the second protective slide 38 extending to the inner circumferential surface is installed, the first and second bellows 31 and 35 are not exposed to the inner circumferential surface of the blower pipe passage, thereby preventing damage to the first and second bellows. Will be. In particular, since the first, second and third pipe members 21, 22, 23 are expanded and contracted within a limited range by the first and second expansion and contraction parts 41 and 45, the first and second protection slides ( It is possible to prevent the first and second bellows 31 and 35 from being exposed by the movement of the 36 and 37. That is, the first and second bellows 31 and 35 are deformed in the first, second, third and fourth holder members 42, 43 and 46 of the first and second elastic limiting portions 41 and 45. 47) within the elastic deformation range.

And when a relatively urgent situation occurs to block the flow of gas or control the amount of blowing, driving the winch 76 of the lifting drive unit 75 to release the rope 78 by the end of the rope 78 The blind cover 70 fixed to the lowered.

The blind cover 70 is guided by the guide rollers 61 and 62 of the blind cover guide part 60 installed on opposite sides of the first and second frame members 55a and 55b. By moving along the blind guide groove 53, the hollow portion in which gas flows is blocked. Therefore, the gas flow can be blocked or regulated along the pipeline where the suspension joint is installed.

The safety blender cover integrated expansion joint according to the present invention configured as described above is installed in a pipe line in which pipes are connected to easily absorb displacement caused by thermal expansion of the pipe, and is installed in the joint to block or control the flow of gas. Since it is possible to solve the problem of having to install a separate valve and expansion joint to block the gas as in the prior art.

Although the present invention has been described with reference to the embodiments shown in the drawings, this is merely exemplary, and it will be understood by those skilled in the art that various modifications and equivalent other embodiments are possible. Therefore, the true technical protection scope of the present invention will be defined by the technical spirit of the appended claims.

Claims (3)

The first and second flange portions 11 and 12 coupled to the ends of adjacent pipes, respectively, and the first and second flange portions 11 and 12 are installed and expanded to absorb the displacement amount due to thermal expansion of the pipeline. Section 20,
It is provided on at least one side of the first and second flanges 11 and 12, and has a blind portion 50 to block the flow of gas,
Both ends of the first and second flange portions 11 and 12 are fixed to the elastic portion 20, the first pipe member 21 is fixed to the first flange portion 11, the first pipe member ( The second pipe member 22 installed in the second flange portion 12 and the third pipe member 23 installed between the first and second pipe members 21 and 22 so as to correspond to 21. Equipped,
The first bellows portion 31 which is installed at the end of the first pipe member 21 and the third pipe member 23 and connects them, and the third pipe member 23 and the second pipe member 22 A first bellows portion 35 installed at an end and connecting the first bellows portion 35 and the first bellows member 21 and the third pipe member 23 to define a stretch displacement of the first bellows 31; The expansion and contraction part 41 and the second expansion and contraction part 45 are provided on the third pipe member 23 and the second pipe member 22 to limit the expansion and displacement of the second bellows 35. ,
The expansion and contraction portion 20 is a first auxiliary slide that is fixed to the inner surface of the third pipe member 23, one side end is extended to the inner peripheral surface side of the first pipe member 21 to assist the first bellows (31) 36 and a second auxiliary slide having one side end fixed to the inner circumferential surface of the second pipe member 22 and extending toward the inner circumferential surface of the third pipe member 23 to protect the second bellows 35 ( 37)
The blind portion 50 is coupled to the blind sealing plate 51 installed on the first flange portion 11 and the blind sealing plate 51 to guide and support the blind cover 70. 53, the first and second frame members 55a, which are supported on the blind connecting plate 52 and the blind sealing plate 51 and the blind connecting plate 52, respectively installed on the blind connecting plate 52. A guide frame 55 including a) 55b, a third frame member 55c installed on the first and second frame members 55a and 55b, and the first and second frame members 55a. A blind cover guide part 60 including guide rollers 61 and 62 installed on the blind guide groove 53 to extend along the blind guide groove 53, and the blind guide groove 53 and the blind cover guide. Move along the portion 60 to block the hollow portion of the stretchable portion 20 Is provided with a blind cover 70, and a lifting driver 75 to lift the blind cover 70 in accordance with the blind guide groove 53 and the blind cover guide portion 60,
The elevating driving unit 75 is installed on one side of the pulley 77 and the first or second frame members 55a and 55b installed on the third frame member 55c and supported by guide rollers. It includes a winch 76 having a winding rope 78 is fastened to the pulley 77, coupled to the upper portion of the braid cover 70,
Safety blind cover integrated expansion joint, characterized in that a limit switch 80 is installed on the upper surface of the blind cover 70 to prevent the third frame member (55c) in contact with the rise. delete delete

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