WO2010041881A2

WO2010041881A2 - Bellows flexible tube for absorbing pump vibration

Info

Publication number: WO2010041881A2
Application number: PCT/KR2009/005756
Authority: WO
Inventors: 김만중
Original assignee: Kim Man Jung
Priority date: 2008-10-10
Filing date: 2009-10-08
Publication date: 2010-04-15
Also published as: WO2010041881A3; KR100932463B1

Abstract

The present invention deals with a bellows flexible tube for pump vibration absorption, comprising a connection plate member having an overall plate shape wherein, to firmly join a plate member with a bellows member, a through hole is formed in the center, and a clamping hole is formed wherethrough a guide bolt may penetrate at a location separated from the through hole by a certain interval, the through hole is formed in a two-ended structure to have a seating face, and an installation groove is formed in the through hole where the end of the bellows member is located; a bellows member having an overall tube shape wherein wrinkles of wave form are repeated; an upper rubber pad and a lower rubber pad located in the clamping hole of the connection plate member; a guide bolt that passes through the lower rubber pad, the lower connection plate member, the upper connection plate member and the upper rubber pad, and has a screw part formed on its upper external diameter and a bolt head formed on its bottom; a nut that screws onto the screw part of the guide bolt at the top of the upper rubber pad; and an upper combination member and a lower combination member that have an overall tube shape with a through hole formed in the center and are formed in a two-ended structure wherein the cross-section of the internal diameter corresponds to the through hole of said upper connection plate member and lower connection plate member so that there is a seating face.

Description

Bellows Expansion Tubes for Absorbing Pump Vibration

The present invention relates to a bellows stretch pipe for absorbing pump vibration, and more particularly, to a technology for firmly joining members while preventing corrosion or breakage of a welded portion because it is not joined by a plate member and a bellows welding.

Generally, various pipes such as cold and hot water transport pipes and waste water discharge pipes are piped in a building, and the pipes are connected to a pump in a machine room, and fluid is transferred to each floor by the operation of the pump. On the other hand, there is a risk that the connection between the various piping pipes of the building and the discharge port of the pump is easily broken by the vibration generated while the pump is operating.

In the case of a multi-storey building, a vertical pipe is erected vertically to supply fluid to each floor and discharge the fluid, and the lower end thereof is connected to the discharge port of the pump. It is stretched by thermal deformation according to temperature and temperature changes, and the height of the building is slightly lowered by gravity, causing deformation in the longitudinal direction.

Therefore, in order to prevent breakage of the connection part caused by the vibration of the pump applied to the connection part between the pipe pipe and the pump or the expansion deformation caused by the length deformation of the granular pipe, the expansion pipe is stretched between the pipe and the pump discharge port to prevent it. Is installing.

Hereinafter, a flexible tube according to the related art will be described with reference to FIGS. 6 and 7.

FIG. 6 is a half sectional view of a flexible tube according to the prior art, and FIG. 7 is an enlarged view of a main portion of part A of FIG.

As shown in FIG. 6, the flexible pipe 1 according to the related art has a first through hole 11 through which a fluid can pass, and is connected to the discharge port side of the pump and has a first connection plate. Member 10; The second connecting plate member 20 is spaced apart from the first connecting plate 10, and the second connecting hole 21 through which a fluid can pass is formed in the body, and connected to each piping pipe of the building. )Wow; A bellows member 30 having corrugated corrugations formed repeatedly, one end of which is fixed to the first connection plate member 10 and the other end of which is fixed to the second connection plate member 20; Composed through the first and second connection plate members (10, 20) is composed of a stretch guide bar member 40 for guiding it during the stretching action of the bellows member (30).

The elastic guide bar member 40 has a head 51 having a diameter larger than the diameter of the body at one end thereof, and a thread is formed on the outer circumferential surface of the end to form the first and second

connection plate members

10 and 20. A guide bolt 50 formed of a bolt portion 52 penetrating through and coupled to protrude an end portion thereof; A nut member 60 screwed to the protruding end of the guide bolt 50; A rubber pad 81 mounted between the nut member 60 and the first connecting plate 10 or the second connecting plate 20; The pad cap 82 is formed to cover the upper portion of the rubber pad 81 and is mounted between the rubber pad 81 and the nut member 60.

In addition, the rubber pad 81 and the pad cap 82 are also mounted to the head 51 of the guide bolt 50 so that the bellows member 30 can cushion the shock generated when the bellows member 30 is stretched.

That is, when the first and second

connection plate members

10 and 20 are connected to the discharge port side pipe of the pump and the pipe pipe of the building by flange coupling, respectively, the first and second

connection plate members

10 and 20 are mounted between the first and second

connection plate members

10 and 20. The bellows member 30 is stretched according to the vibration generated during the operation of the pump and the length deformation of the piping pipe, and absorbs the vibration and the length deformation.

Meanwhile, as shown in FIG. 7, both ends of the bellows member 30 are welded to and fixed to inner surfaces of the first and second through

holes

11 and 21 of the first and second

connection plate members

10 and 20. have.

However, as described above, since the bellows member is directly welded to and fixed to the first and second connection plate members, the first and second connection plate members are thermally deformed or the material is weak due to the high heat generated during welding. There is a distraction that changes.

In order to prevent such a problem, a technique of manufacturing the first and second connection plate members made of a special alloy material which does not deform even in high heat generated during welding and is resistant to corrosion from a highly corrosive fluid has been proposed, but this technique increases the manufacturing cost. It causes. In addition, since the bellows member is directly welded to the first and second connection plate members, the flow generated during the stretching action is directly transmitted to the fixed part, thereby easily breaking during use.

The present invention is derived to solve the problems according to the prior art described above, and does not rely on welding to join the connection plate member, the bellows member and the upper coupling member, so that corrosion of the welded portion may be caused by the joining using welding. To provide a technique for preventing or damage.

In order to achieve the above object, the pump vibration absorbing bellows expansion pipe according to an embodiment of the present invention, the upper connection plate having a plate shape with a through hole formed in the center, spaced apart a predetermined distance from the lower portion of the upper connection plate And a lower connection plate formed to correspond to the upper connection plate, installed between the upper connection plate and the lower connection plate, and installed in the bellows member having a tubular shape in which corrugations are repeated and the through hole of the upper connection plate. And an upper coupling member and a lower coupling member mounted in the through hole of the lower connection plate.

In the present invention, the through hole of the upper connecting plate member and the lower connecting plate member is formed in a two-stage structure is mounted on the upper coupling table or the upper coupling table; And an installation groove in which an end of the bellows member is located.

In the present invention, the upper coupling member and the lower coupling member is formed in a two-stage structure, the cross section of the outer diameter corresponding to the through-holes of the upper connecting plate member and the lower connecting plate member to form a seating surface seated on the seat Can be.

In addition, in the present invention, the outer diameters of both ends of the bellows member are located in the installation grooves of the upper connecting plate member and the lower connecting plate member, and the upper connecting member and the lower connecting member are connected to the upper connecting plate member and the lower connecting member through an adhesive means. It can be bonded to the plate member.

In the present invention, the upper connecting plate member and the lower connecting plate member is formed with a fastening hole for penetrating the guide bolt at a position spaced apart from the through hole by a predetermined interval, the upper connecting plate member and the lower connecting plate member A first guide part may be further formed on the seating plate, and a second guide part corresponding to the first guide part may be further formed on the seating surfaces of the upper coupling member and the lower coupling member.

In an embodiment of the present invention, the upper rubber pad and the lower rubber pad may be further disposed on the upper part of the fastening hole of the upper connection plate member and the lower part of the fastening hole of the lower connection plate member.

In the present invention, the Velcro member is made of stainless steel, upper connecting plate member, lower connection In addition, in the present invention, the upper and lower connecting plate, the bellows member is Teflon coated or the upper and lower connecting plate is anodizing according to the purpose Can be processed. The plate member may be formed of aluminum.

According to another embodiment of the present invention, both ends of the bellows member is formed of a horizontal bending portion and a vertical bending portion, the horizontal bending portion is in contact with the seating plate, the vertical bending portion is fitted into the installation groove, or the horizontal The bent portion may contact the seating plate, and the vertical bent portion may contact the outer diameters of the upper coupling member and the lower coupling member.

According to the present invention, by fitting the connection plate member, the bellows member, and the upper coupling member by fitting and using an adhesive, it is possible to prevent corrosion or breakage of the welded portion which may be caused by the bonding using welding.

On the other hand, since the bellows member is made of stainless steel, it is effective in preventing corrosion.

In particular, even if the plate, the bellows member is Teflon-coated or the plate is anodized according to the purpose and exposed to seawater, there is an effective effect to prevent corrosion.

1 is a perspective view of a flexible tube according to a first embodiment of the present invention.

2 is an exploded side cross-sectional view of FIG.

3 is a side cross-sectional view of the engagement of FIG.

Figure 4 is a side cross-sectional view of the coupling of the expansion tube according to the second embodiment of the present invention.

Figure 5 is a side cross-sectional view of the coupling of the expansion tube according to the third embodiment of the present invention.

Figure 6 is a half sectional view of a flexible tube according to the prior art.

FIG. 7 is an enlarged view illustrating main parts of part A of FIG. 6.

100: expansion pipe 110: upper connecting plate member

120: lower connecting plate member 130: bellows member

140: upper coupling member 145: lower coupling member

150: guide bolt

In the following, embodiments of the present invention are described with reference to the accompanying drawings.

In the following description of the present invention, if it is determined that detailed descriptions of related known functions or configurations may unnecessarily obscure the subject matter of the present invention, the detailed description will be omitted. In addition, the terms to be described later are terms set in consideration of functions in the present invention, and these terms may vary according to the intention or custom of the producer producing the product, and the definition of the terms should be made based on the contents throughout the present specification.

(First embodiment)

First, the bellows expansion pipe for absorbing the pump vibration according to the first embodiment of the present invention will be described with reference to the accompanying drawings.

Figure 1 is a perspective view of a flexible tube according to a first embodiment of the present invention, Figure 2 is an exploded side cross-sectional view of Figure 1, Figure 3 is a side cross-sectional view of FIG.

As shown, the pump vibration absorbing bellows expansion pipe 100 according to the first embodiment (100: for convenience of description below, unless otherwise stated, 'pump vibration absorbing bellows expansion pipe' is simply a 'expansion pipe' The main configuration of the present invention includes an upper connection plate member 110, a lower connection plate member 120, a bellows member 130, an upper coupling member 140, and a lower coupling member 145.

The upper connection plate member 110 has a plate shape in which a through hole 115 is formed in the center thereof. A fastening hole 119 for penetrating the guide bolt 150 is formed at a position spaced a predetermined distance from the through hole 115 of the upper connection plate member 110. The through hole 115 is formed in a two-stage structure, has a seating stand 111, and an installation groove 113 in which the end 131 of the bellows member 130 is positioned is formed. The seating stand 111 is formed with a guide groove 112 having an upper portion. The lower connection plate member 120 has a shape in which the upper connection plate member 110 is vertically symmetrical. The upper connection plate member 110 and the lower connection plate member 120 are formed of aluminum, and the bellows member is formed of stainless steel. Stainless steel is highly corrosion resistant but almost impossible to weld. However, since the present invention does not use a joining method by welding, a stainless steel material having excellent corrosion resistance and durability can be used.

The bellows member 130 has a tubular shape in which corrugations of corrugations are repeated as a whole. The upper rubber pad 153 is positioned above the fastening hole 119 of the upper connection plate member 110 and absorbs vibration generated during use of the expansion pipe 100. Since the structure and function of the lower rubber pad 154 is the same as the upper rubber pad 153, its detailed description is omitted.

The guide bolt 150 sequentially penetrates the lower rubber pad 154, the lower connecting plate member 120, the upper connecting plate member 110, and the upper rubber pad 153, and a thread 152 is formed at the upper outer diameter. And the bolt head 155 is formed at the bottom.

The nut 151 is screwed with the threaded portion 152 of the guide bolt 150 at the top of the upper rubber pad 153.

The upper coupling member 140 has a tubular shape in which a through hole 144 is formed in the center as a whole, and a cross section of an outer diameter is formed in a two-stage structure corresponding to the through hole 115 of the upper connection plate member 110. Has 141. The seating surface 141 may further include a guide protrusion 142 corresponding to the guide groove 112 of the upper connection plate member 110. As the guide groove 112 and the guide protrusion 142 are fitted to each other, the upper coupling member 140 and the upper connection plate may maintain a stable coupling position. The lower coupling member 145 has a shape in which the upper coupling member 140 is symmetric up and down.

Hereinafter, the assembly of the expansion tube according to the first embodiment will be described.

In the first step, the end 131 of the bellows member 130 is positioned in the installation groove 113 of the upper connection plate member 110 and the lower connection plate member 120.

In the second step, an adhesive is injected and fitted between the guide protrusion 142 of the upper coupling member 140 and the guide groove 112 of the upper connection plate member 110. The same operation is performed in the lower coupling member 145 and the lower connection plate member 120 in the same manner.

In a third step, the upper rubber pad 153 and the nut 151 are sequentially stacked on the upper part of the fastening hole 119, and the lower rubber pad 154 is lower than the fastening hole 129 of the lower connection plate member 120. In the state positioned at, through the guide bolts 150 to be coupled.

Second Embodiment

Hereinafter, a flexible tube according to a second embodiment of the present invention will be described with reference to FIG. 4.

As shown in FIG. 4, the expansion pipe 200 according to the second embodiment has a horizontal bending portion 231 and a vertical bending portion at both ends of the bellows member as compared with the expansion pipe 100 according to the first embodiment. It is substantially the same except that 232) is further formed.

That is, the horizontal bent portion 231 is in contact with the seat 211, the vertical bent portion 232 is in contact with the outer diameter of the upper coupling member 240.

By such a configuration, the contact area between the members becomes large, which enables a more stable coupling state to be maintained.

(Third Embodiment)

Hereinafter, a flexible pipe according to a third embodiment of the present invention will be described with reference to FIG. 5.

As shown in FIG. 5, the expansion pipe 300 according to the third embodiment has a horizontal bending portion 331 and a vertical bending portion at both ends of the bellows member as compared with the expansion pipe 100 according to the first embodiment. Are substantially the same except that 332) is further formed.

That is, the horizontal bent portion 331 is in contact with the seat 311, the vertical bent portion 332 is fitted into the installation groove 313.

The embodiments of the present invention have been described above with reference to the accompanying drawings.

However, it is to be noted that the present invention is not particularly limited only to the above-described embodiments, and that various modifications and changes can be made by those skilled in the art within the spirit and spirit of the appended claims as necessary.

Claims

An upper connection plate having a plate shape having a through hole formed at a center thereof;

A lower connection plate disposed below the upper connection plate at a predetermined interval and formed to correspond to the upper connection plate;

A bellows member disposed between the upper connection plate and the lower connection plate and having a tubular shape in which corrugations of corrugations are repeated;

And an upper coupling member mounted to the through hole of the upper connection plate and a lower coupling member mounted to the through hole of the lower connection plate.
According to claim 1, wherein the through hole of the upper connecting plate member and the lower connecting plate member is formed in a two-stage structure is mounted on the upper coupling table or the upper coupling table; And an installation groove in which an end of the bellows member is disposed, the bellows expansion pipe for absorbing the pump vibration.
The seating surface of claim 2, wherein the upper coupling member and the lower coupling member are formed in a two-stage structure in which cross-sections of outer diameters correspond to the through-holes of the upper connection plate member and the lower connection plate member. The formed bellows expansion pipe for absorbing pump vibration, characterized in that formed.
4. An outer diameter of both ends of the bellows member is located in an installation groove of the upper connecting plate member and the lower connecting plate member, and the upper connecting member and the lower connecting member are attached to the upper connecting plate member and the lower part through an adhesive means. A bellows expansion tube for absorbing pump vibration, which is joined to the connecting plate member.
According to claim 4, The upper connecting plate member and the lower connecting plate member is formed with a fastening hole for penetrating the guide bolt at a position spaced apart from the through hole by a predetermined interval,

A first guide part is further formed on the seating plate of the upper connection plate member and the lower connection plate member, and a second guide part corresponding to the first guide part is formed on the seating surfaces of the upper coupling member and the lower coupling member. A bellows expansion tube for absorbing the pump vibration, characterized in that further formed.
According to claim 5, Bellows expansion pipe for absorbing pump vibration, characterized in that it further comprises an upper rubber pad and a lower rubber pad positioned on the upper fastening hole of the upper connecting plate member and the lower of the fastening hole of the lower connecting plate member. .
According to any one of claims 1 to 6, wherein the upper connecting plate member, the lower connecting plate member, the bellows member, characterized in that the bellows member is formed of stainless steel material, pump vibration absorption bellows expansion pipe.
According to any one of claims 1 to 3, wherein both ends of the bellows member is formed of a horizontal bent portion and a vertical bent portion,

The horizontal bent portion is in contact with the seat, the vertical bent portion is fitted into the mounting groove, or the horizontal bent portion is in contact with the seat, the vertical bent portion is in contact with the outer diameter of the upper coupling member and the lower coupling member A bellows expansion tube for absorbing pump vibration, characterized in that.
The bellows-elastic pipe for absorbing pump vibration according to any one of claims 1 to 3, wherein the upper and lower connection plates and the bellows member are Teflon coated or anodized the upper and lower connection plates. .