KR101092761B1 - Improved Stainless Steel Pipe Including Slip-in Joint and Flexible Joint for Protective Box of Water Meter - Google Patents

Abstract

The present invention is a stainless steel pipe vertically connected to the water meter installed in the water meter protection tube, one end of the stainless steel pipe is formed a slip joint for connection with the pipe is buried in the basement, the stainless steel pipe The middle part is an integrated corrugated section steel pipe, which is a slip for the water meter protection tube of an improved structure composed of a corrugated section that prevents freezing caused by shrinkage and expansion of pipes and alleviates external shocks.

According to the present invention, it is easy to stretch pipes by using slip joints and corrugated joints to prevent breakage of water pipes due to loads and impacts of ground sedimentation or moving vehicles and freezing in winter, thereby preventing double damage and preventing slip joints and corrugated joints. Improve the performance of the joint is effective to prevent leakage.

Corrugated steel pipe, expansion joint, flexible joint, slip-in joint, water meter protection box, water meter, stainless steel pipe

Description

Improved Stainless Steel Pipe Including Slip-in Joint and Flexible Joint for Protective Box of Water Meter

The present invention relates to a slip-integral corrugated section steel pipe, and more particularly to a slip-integral corrugated section steel pipe that is vertically connected to the water meter (B) installed in the water meter protector (A).

As a result of the tap water quality test conducted by the Seoul Metropolitan Government in July 2006, there were several cases of water quality deterioration, such as severe pollution of galvanized steel pipes and PVC pipes. The cause of this is mixed by the leakage of galvanized steel pipe and PVC pipe or corrosion of the galvanized steel pipe, which is gradually changing the material of the water pipe to stainless steel material.

The water pipes for homes in general houses are installed in the main water pipes on the road, and they are installed in front of the fountains. The branched pipes are buried underground and enter the ground of the house and enter through the water meter guards. Piping to the room.

In this process, the problem part is branching of the pipe branch buried before the saddle fountain, and it is damaged by ground subsidence of the pipe buried underground, or vulnerable to the load and impact of the moving vehicle, Leakage in pipe joints due to repeated contraction and expansion even if the water supply pipe rupture due to winter freezing of the water supply pipe inside the water meter protection container and the discharge pipe passing through the water meter protection device or the insulation and protection of the water meter protection container are prevented. The back is a problem.

The present invention for improving the above problems is to prevent the leakage of the joint portion connected to the underground pipe and the leakage of the pipe joint portion due to the rupture or contraction and expansion of the water supply pipe due to winter freezing occurring in the pipe in the water meter protection tank In order to solve the problem of the present invention to provide a one-piece corrugated joint steel pipe that is a slip for the water meter protection tube of the improved structure.

The present invention is a stainless steel pipe vertically connected to the water meter installed in the water meter protection tube, one end of the stainless steel pipe is formed a slip joint for connection with the pipe is buried in the basement, the stainless steel pipe The middle part is composed of wrinkle nodes that prevent freezing and mitigate external shocks by shrinkage and expansion of pipes.

The slip joint is a slip joint body welded to the stainless steel pipe, a packing for preventing leakage from the outer surface of the pipe to be connected and the inner surface of the slip joint body, and a washer pressed with a uniform force to the packing; A fixed ring that limits the insertion length of the pipe to be inserted and connected, serves as a smooth entry and exit, and a dust stopper to prevent foreign substances from entering before use, and is coupled with the slip-in joint body and is compressed by the packing when tightened. A slip joint cover which maintains airtightness with the pipe, and is inserted between the fixing ring and the slip joint cover to prevent foreign substances from entering from the outside and to the fixing ring and slip joint cover when tightening the slip joint cover. It consists of an O-ring that cushions.

The stainless steel pipe and the slip joint body are connected by welding, and the outside of the slip joint body is formed with a fixed hexagon nut fixing with a pipe wrench and the slip joint cover when the slip joint is fastened. And a hollow having the same shape as the packing shape is formed in the slip joint body so that the packing is tightly inserted, and the packing is formed with a rubber material and has the same hollow as the outer diameter of the pipe to be inserted. The length of is more than 15mm, the inclined surface such as the inclination angle of the slip joint body hollow is formed on the outer portion of the packing, the fixing ring is a conical column-shaped fixing ring body of the hollow inside, the connection of the pipe Consists of steel balls that define the insertion length and serve as a smooth entry and exit of the pipe, The gap ring groove is formed in the stationary ring body for smooth entry and exit of the pipe to be inserted and inserted. The steel ball is made of stainless steel, and a plurality of grooves are formed in the inner middle circumference of the stationary ring body. 2/5 to 3/5 is inserted into the thickness of the fixing ring body without protruding, and 2/5 to 3/5 of the remaining balls are formed to protrude into the fixing ring body to be inserted into the groove of the pipe to be inserted. It should be able to, the outside of the slip joint cover is formed a hex nut for rotating the pipe wrench when the coupling and disassembly, the inside of the slip joint cover screw portion for coupling with the slip joint body, the washer The washer jaw is installed, the inclined fixing ring insertion hole is installed the fixing ring and the O-ring jaw is formed is formed.

The corrugation node has a nominal diameter 13mm ~ 30mm has 15 acids, the nominal diameter 40mm ~ 50mm can be solved by the integrated corrugated joint steel pipe, which is a slip for the water meter protection barrel having a structure of 20 acids.

According to the present invention, it is easy to stretch pipes by using slip joints and corrugated joints to prevent breakage of water pipes due to loads and impacts of ground sedimentation or moving vehicles and freezing in winter, thereby preventing double damage and preventing slip joints and corrugated joints. Improve the performance of the joint is effective to prevent leakage.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

1 is an overall assembly perspective view of an integrated corrugated knotted steel pipe of the improved water meter meter tube according to an embodiment of the present invention, Figure 2 is a slip meter of the water meter meter tube of the improved structure according to an embodiment of the present invention Figure 3 is an overall exploded view of the integral corrugated steel pipe, Figure 3 is a slip joint assembly and exploded view of the integral corrugated steel pipe of the water meter protection cylinder slip of the improved structure according to an embodiment of the present invention, Figure 4 is an embodiment of the present invention Slip joint body detail of the integrally pleated knuckle node of the water meter protection cylinder slip of the improved structure according to the example, Figure 5 is an integrated pleated node of the water meter protection passage slip of the improved structure according to an embodiment of the present invention 6 is a packing detail view of a steel pipe, and FIG. 6 is a detail of a fixing ring of a unitary corrugated joint steel pipe which is a slip for a water meter protection tube of an improved structure according to an embodiment of the present invention. 7 is a detailed view of the slip joint cover of the integral corrugated joint steel pipe of the water meter protection cylinder slip of the improved structure according to an embodiment of the present invention, Figure 8 is a diagram of the improved structure according to an embodiment of the present invention A detailed cross-sectional view in which a pipe is inserted into a slip joint of a slip-integral corrugated steel pipe for measuring device protection, and FIG. 9 is a crimp node of a slip-integral corrugated steel pipe for water meter protection tube of an improved structure according to an embodiment of the present invention. Fig. 10 is an overall view of the connector attachment of the integrated corrugated section steel pipe of the improved water meter protection tube slip according to the second embodiment of the present invention, and Fig. 11 is a water meter protection of the improved structure of the present invention. Exemplary use diagram for the water metering cylinder of the unitary corrugated section steel pipe which is a general slip.

As shown in FIG. 1, the present invention is a stainless steel pipe (C) vertically connected to a water meter (B) installed in a water meter protection tube (A), and buried underground at one end of the stainless steel pipe (C). Slip joint (1) is formed for the connection with the incoming pipe, and the middle portion of the stainless steel pipe (C) as a wrinkle node (2) to prevent the freezing by the expansion and contraction of the pipe and to mitigate the external impact It is composed.

The wrinkle node (2) is formed in one or two places, depending on the purpose of use is used to select one or two places, when the pipe is short, the one-piece wrinkle that is a slip for the water meter protection tube usually formed with one wrinkle node (2) Knurled steel pipe is used, and when the pipe is long, one-piece corrugated knurled steel pipe, which is a slip for the water meter protection tube with two corrugated knots, is used. When using two places, the range of contraction and expansion is wide.

In the construction method of the integral corrugated nodule steel pipe which is a slip for the water meter protection tube, it is preferable that the corrugated node 2 is installed instead of the elbow at the place where the direction is always changed from the vertical pipe to the horizontal pipe, and there are two corrugated nodes 2 In case of using integral corrugated steel pipe which is slip for water meter protection tube, one place is installed in vertical pipe part.

As shown in FIG. 2, the exploded perspective view of the present invention improves the performance of the slip joint by reinforcing the fixing ring 14 and the body O-ring 18, etc., and standardizing the design reflecting the strength of the crease 2. Its elasticity improves the response range for contraction and expansion.

As shown in FIG. 3, the slip joint 1 includes a slip joint body 11 welded to the stainless steel pipe C, an outer surface of a pipe to be connected, and an inner surface of the slip joint body 11. Packing (12) to prevent leakage from the, Washer (13) for pressing the packing with a uniform force, and the connection ring (14) to limit the insertion length of the pipe to be inserted and to serve as smooth entry and exit and Dust joint 15 for preventing foreign matter from entering before use, the slip joint cover coupled to the slip joint body 11 and maintains the airtightness of the pipe connected by pressing the packing 12 when tightening ( 16) and inserted between the fixing ring 14 and the slip joint cover 16 to prevent foreign substances from entering from the outside and slip-in with the fixing ring 14 when the slip joint cover 16 is tightened. Buffer to cushion joint cover 16 It consists of 17, and the slip of the joint body 11, the body O-ring 18 as a dual device for preventing leakage in the gap between the inner and packing.

As shown in FIG. 4, the slip joint body 11 is connected to the stainless steel pipe C and the slip joint body 11 by welding 115.

On the outside of the slip joint body 11, a fixed hexagon nut 111 for fixing with a pipe wrench or the like and a male thread portion 112 coupled to the slip joint cover 16 are formed when the slip joint is fastened. A hollow 113 having the same shape as the packing 12 is formed in the slip joint body 11 so that the packing is tightly inserted, and the body does not fall down when the body o-ring 18 is installed. O-ring jaw 116 is formed.

Since the hollow 113 is to be inserted closely with the packing 12, the inclined surface 114 should be the same angle as the inclined surface 122 of the packing 12.

As shown in FIG. 5, the packing 12 is formed of a rubber material such as butyl rubber and is formed with a hollow 121 that is the same as the outer diameter of the pipe P, and the length d of the hollow is 15 mm or more. The outer surface of the packing is formed with an inclined surface 122 such as an inclination angle of the hollow joint body 113 of the slip joint body 11.

The packing 12 may have a close contact angle (a °) of 20 ° to 50 ° and a thickness (d) of 15 mm or more of the inclined surface 122 to correspond to expansion and contraction without leakage.

As shown in Figure 6, the ring 14 is a conical column-shaped fixed ring body 141 is hollow inside, and the steel ball to limit the insertion length of the pipe is inserted and inserted and smoothly entering and leaving the pipe 142.

The fixing ring body 141 is formed with a clearance groove 143 for smooth entry and exit of the pipe is inserted into the gap.

The steel balls 142 are made of stainless steel, and are formed in plural in the inner middle circumference of the fixed ring body, and do not protrude to the outside of the fixed ring body 141 but have a thickness of 2 in the fixed ring body 141. / 5 to 3/5 is inserted, and 2/5 to 3/5 of the remaining balls are formed to protrude into the fixing ring body 141 so as to be caught in the groove P1 of the pipe P to be inserted. The pipe (P) to be inserted is not allowed to proceed anymore, and it is not completely assembled to prevent it from being fully contacted with the packing 12.

The fixing ring body 141 and the steel ball 142 is molded to be integrally formed to prevent the steel ball 142 from being separated from the fixed ring body 141 is a preferred manufacturing method.

As shown in FIG. 7, a hexagon nut part 165 is formed at the outside of the slip joint cover 16 to rotate with a pipe wrench at the time of coupling and disassembly, and inside the slip joint cover 16. A screw part 161 for coupling with the slip joint body 11, a washer jaw 162 in which the washer 13 is installed, and an inclined fixing ring insertion hole in which the fixing ring 14 is installed 163. ) And the O-ring jaw 164 on which the O-ring 17 is installed is formed.

Insert a pipe to thread the threaded portion 161 of the slip joint cover 16 and the male threaded portion 112 of the slip joint body 11 to match the threaded portion, and rotate the hexagon nut portion 165 with a pipe wrench. When tightened, the packing 12 contracts and comes into close contact with the outer diameter of the pipe, and the packing 12 comes into close contact with the hollow 113 of the slip joint body 11 so that even when there is pressure when the tap water is drawn in, the outer diameter of the pipe However, no leakage occurs in the slip joint body (11).

As shown in FIG. 8, the pipe P inserted into the slip joint 1 is connected so that the installation position or function of each component of the slip joint 1 can be seen at a glance. It is shown in cross section.

By reinforcing the fixing ring 14 and the body O-ring 18 and the like, it is visible that the performance of the slip-in fastener is improved.

When the pipe is inserted, the slip joint cover 16 and the threaded joint of the slip joint body 11 are fitted to each other, and the hexagonal nut 165 is rotated with a pipe wrench to tighten the packing 12 so that the pipe is contracted. The packing 12 is in close contact with the hollow 113 of the slip joint body 11 and the leakage is also prevented in the body o-ring 18 so that the pipe may have a pressure when the tap water is drawn in. It can be seen visually that the leakage of the outer diameter or the slip joint body 11 can be prevented from occurring.

As shown in FIG. 9, the corrugated node 2 prevents breakage and freezing of the water supply pipe due to the vehicle moving load by preventing the pipe joint or the pipe rupture when the pipe is contracted and expanded, and prevents earthquake or ground subsidence. It can withstand strong external pressure or impact, and its excellent expansion and bending action makes it unnecessary for pipe fittings such as elbows, so that the connection can be minimized, so there is almost no leakage and defect rate. Economical cost is reduced, and stainless steel pipe material is used for durability and corrosion resistance, so there is no concern about rust and it is hygienic.

As described below, by designing and reflecting the strength of the wrinkled node 2, the elasticity was improved to increase the response range for shrinkage and expansion.

The wrinkled node 2 has 15 peaks 21 having a nominal diameter D of 13 mm to 30 mm and a 20 peak 21 having a nominal diameter D of 40 mm to 50 mm.

The length (L) of the wrinkle node (2) is nominal diameter (D) 13mm is 70mm ~ 90mm, nominal diameter (D) 20mm ~ 25mm is 110mm ~ 130mm, nominal diameter (D) 30mm is 133mm ~ 173mm, nominal The diameter (D) of 40 mm to 50 mm is 205 mm to 245 mm.

Tube thickness (t) before forming the corrugation node (2) is nominal diameter (D) 13mm is 0.72mm ~ 0.88mm, nominal diameter (D) 20mm ~ 25mm is 0.90mm ~ 1.10mm, nominal diameter (D) 30mm ~ 50mm is 1.08mm ~ 1.32mm.

The table above shows the following.

Title
diameter Straight skin thickness (t) Crease Length (L) (mm) arithmetic
(dog) Remarks Standard dimension Tolerance Standard dimension Tolerance 13A 0.8 ± 0.08 80 ± 10 15 20A 1.0 ± 0.10 120 ± 10 15 25A 1.0 ± 0.10 120 ± 10 15 30A 1.2 ± 0.12 153 ± 20 15 40A 1.2 ± 0.12 225 ± 20 20 50 A 1.2 ± 0.12 225 ± 20 20

As shown in FIG. 10, the connector 3 may be formed at the other end of the stainless steel pipe C for the convenience of the piping on the water meter B side.

The connector 3 has a left joint 31 welded to the stainless steel pipe C, a right joint 32 connected to a water meter pipe, and between the left joint 31 and a right joint 32. The packing 33 which is inserted and prevents leakage, and the left junction 31 and the right junction 32 are bonded to each other and the surface of the packing 33 is in close contact with the left junction 31 and the right junction 32 It consists of a tightening nut 34 to prevent leakage, and the left joint portion 31 has a structure in which a hexa nut 311 is fixed to the pipe when the pipe is fastened.

If the stainless steel pipe (C) to the other end of the connector (3) is integrated with the integrated unit of the corrugated section of the water meter protection tube slip water meter protection tube can be connected to the pipe simply.

As shown in FIG. 11, the water meter cylinder of the red-lined dotted line is an exemplary view for use in the water metering cylinder of the integrated corrugated section steel pipe of the water meter protective tube of the improved structure of the present invention as shown in FIG. 11. Slip-in integral corrugated steel pipe.

11-1 shows an example of the use of an integrated corrugated knuckle steel pipe with an improved structure having a single wrinkled node, and FIG. 11-2 shows an improved structure of a water meter protected case having two wrinkled nodes. As an example of the use of the slip-in integral corrugated steel pipe, the construction method of the slip-integral corrugated steel pipe for water meter protection tube is preferably installed in place of the elbow in place of the elbow where the direction changes from the vertical pipe to the horizontal pipe. .

According to the present invention as described above, the breakage of the water supply pipe caused by the load and impact of ground subsidence or moving vehicle and the freezing of the winter can be easily expanded and expanded by using slip joints and wrinkled joints, thereby preventing double damage and slip-in. Improve the performance of joints and wrinkled joints to prevent leakage of the joints.

1 is a perspective view of the entire assembly of the integral pleated knuckle steel pipe for the water meter protection tube slip of the improved structure according to an embodiment of the present invention

Figure 2 is an overall exploded view of the integral wrinkled steel pipe of the water meter protection cylinder slip of the improved structure according to an embodiment of the present invention

3 is an assembly and exploded view of the slip joint of the water-integrated pleated knuckle steel pipe of the improved water meter protection container according to an embodiment of the present invention

Figure 4 is a detailed view of the slip joint body of the water-integrated slip-integral corrugated joint steel pipe of the improved structure according to an embodiment of the present invention

Figure 5 is a packing detail of the slip-integral corrugated steel pipe of the water meter protection barrel of the improved structure according to an embodiment of the present invention

Figure 6 is a detailed view of the fixed ring of the integral wrinkled steel pipe of the water meter protection tube slip of the improved structure according to an embodiment of the present invention

Figure 7 is a detailed view of the slip joint cover of the slip-in integral corrugated steel pipe of the water meter protection barrel of the improved structure according to an embodiment of the present invention

8 is a detailed cross-sectional view of the pipe inserted into the slip joint of the integral corrugated joint steel pipe of the water meter protection cylinder slip of the improved structure according to an embodiment of the present invention

9 is a detailed view of the wrinkle node of the integral wrinkled steel pipe of the water meter protection tube slip of the improved structure according to an embodiment of the present invention

10 is an overall view of the connector attachment of the integrated pleated knuckle steel pipe slip-in for the water meter protection tube of the improved structure according to the second embodiment of the present invention

11 is an exemplary view of the use of the water metering cylinder of the integrated unit of wrinkled knotted steel pipe of the water meter protection tube of the improved structure of the present invention.

<Description of Signs of Major Parts in Drawings>

A: water meter protection container B: water meter

C: Stainless steel pipe D: Nominal diameter

d: hollow length P: pipe to be inserted

P1: Home

1: slip joint 11: slip joint body

111: fixed hexagon nut 112: male thread

113: hollow 114: inclined surface

115: welding 116: body O-ring chin

12: packing 121: hollow

122: inclined surface 13: washer

14: fixed ring 141: fixed ring body

142: steel ball 143: play groove

15: dust cover 16: slip joint cover

161: screw portion 162: washer jaw

163: fixing ring insertion hole 164: O-ring chin

165: hexagonal nut 17: O-ring

18: body O-ring (18) 2: wrinkle wrinkle

21: acid 3: connector

31: left junction 311: hexa nut

32: right junction 33: packing

34: Tightening Nut

Claims (5)

In the stainless steel pipe (C) connected vertically to the water meter (B) installed in the water meter protective casing (A), One end portion of the stainless steel pipe (C) is formed with a slip joint (1) for connection with the pipe embedded in the basement, and the middle part of the stainless steel pipe (C) to prevent freezing by shrinkage expansion of the pipe And a wrinkle node (2) to alleviate external shocks, The slip joint 1 is a packing for preventing leakage from the slip joint body 11 welded to the stainless steel pipe C, the outer surface of the pipe to be connected and the inner surface of the slip joint body 11 ( 12), the washer 13 for pressing the packing with uniform force, the fixing ring 14 for limiting the insertion length of the pipe to be inserted and the guide role, and the dust stopper to prevent foreign substances from entering before use ( 15), a slip joint cover (16) coupled with the slip joint body (11) and retaining airtightness with the pipe connected by pressing the packing (12) when tightened, and the fixing ring (14); An O-ring inserted between the slip joint cover 16 to prevent foreign substances from entering from the outside and cushioning the fixing ring 14 and the slip joint cover 16 when the slip joint cover 16 is tightened. Consists of 17, The stainless steel pipe (C) and the slip joint body 11 is connected by welding, On the outside of the slip joint body 11 is formed a fixed hexagon nut 111 for fixing with a pipe wrench when the slip joint is fastened and a male thread portion 112 coupled with the slip joint cover 16, A hollow 113 having the same shape as the packing 12 is formed in the slip joint body 11 so that the packing is inserted therein. The packing 12 is formed of a rubber material and is formed with a hollow 121 is the same as the outer diameter of the pipe is inserted, the inclined surface such as the inclination angle of the slip joint body 11 hollow 113 in the outer portion of the packing ( 122) is formed, The fixing ring 14 is composed of a conical column-shaped fixing ring main body 141 and a steel ball 142 to limit the insertion length of the pipe to be inserted and serves as a guide of the pipe, The stationary ring body 141 is formed with a clearance groove 143 of the pipe is inserted and inserted, The steel balls 142 are made of stainless steel, and are formed in plural in the inner middle circumference of the fixed ring body, and do not protrude to the outside of the fixed ring body 141. / 5 to 3/5 is inserted, and 2/5 to 3/5 of the remaining balls are formed to protrude into the fixing ring body 141 to be caught in the groove of the pipe to be inserted, On the outside of the slip joint cover 16, a hexagon nut part 165 is formed to rotate with a pipe wrench at the time of coupling and disassembly. The slip joint cover 16 has a threaded portion 161 for coupling with the slip joint body 11, a washer jaw 162 in which the washer 13 is installed, and the fixing ring 14. The inclined fixing ring insertion hole 163 is installed and the O-ring jaw 164 is installed, the O-ring 17 is formed, The wrinkled node (2) has a nominal diameter (D) 13mm ~ 30mm has 15 peaks 21, the nominal diameter (D) 40mm ~ 50mm is a structure of the improved structure having 20 peaks (21) Slip-in integrated corrugated steel pipe The method of claim 1, The length (L) of the wrinkle node (2) is nominal diameter (D) 13mm is 70mm ~ 90mm, nominal diameter (D) 20mm ~ 25mm is 110mm ~ 130mm, nominal diameter (D) 30mm is 133mm ~ 173mm, nominal Diameter (D) 40mm ~ 50mm is 205mm ~ 245mm, Tube thickness (t) before forming the corrugation node (2) is nominal diameter (D) 13mm is 0.72mm ~ 0.88mm, nominal diameter (D) 20mm ~ 25mm is 0.90mm ~ 1.10mm, nominal diameter (D) 30mm ~ Slip-in integral corrugated steel pipe for water meter protection tube of improved structure, characterized in that 50mm is 1.08mm ~ 1.32mm The method of claim 1, Slip-integrated corrugated section steel pipe for improved water meter protection tube of the improved structure, characterized in that the body O-ring 18 is further installed as a double device for preventing leakage in the gap between the slip joint body 11 and the packing. The method of claim 1, The packing 12 has a close contact angle (a) of 20 ° ~ 50 °, the thickness of the hollow length (d) is an integrated pleated knuckle tube of water meter protection tube slip of the improved structure, characterized in that composed of more than 15mm The method of claim 1, The connector 3 is formed at the other end of the stainless steel pipe (C), The connector 3 has a left joint 31 welded to the stainless steel pipe C, a right joint 32 connected to a water meter pipe, and between the left joint 31 and a right joint 32. The packing 33 which is inserted and prevents leakage, and the left junction 31 and the right junction 32 are coupled to each other so that the surface of the packing 33 is in close contact with the left junction 31 and the right junction 32. And a tightening nut 34 to prevent leakage, and the left joint portion 31 has a hexanut 311 formed therein to fix the pipe when the pipe is fastened. Integral Corrugated Steel Pipe

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