Metal compensation hose with anti-corrosion layer

Abstract

The utility model discloses a metal compensation hose with an anticorrosive coating, which comprises a hose body, two ends of the hose body are respectively provided with a steel sleeve, each steel sleeve is provided with a nut for externally connecting a pipeline, the hose body is sequentially provided with a corrugated pipe, a woven mesh sleeve and a PVC (polyvinyl chloride) anticorrosive coating from inside to outside, the periphery of each steel sleeve is provided with a repairing component for repairing cracks, and the outer periphery of each steel sleeve is provided with an anti-corrosion layer. The repairing assembly moves in the axial direction of the pipe body and comprises a plurality of sector ring blocks, every two adjacent sector ring blocks are connected through a connecting piece, the connecting pieces are used for driving the two adjacent sector ring blocks to move towards the sides close to each other, leakage repairing pieces are arranged on the inner walls of the sector ring blocks, coating glue is arranged on the inner walls of the leakage repairing pieces, and the coating glue is arranged on the inner walls of the leakage repairing pieces. The leakage repairing piece has the advantages that the repairing assembly is moved to the crack in the axial direction of the pipe body, then the two sector ring blocks are driven by the connecting piece to move towards the sides close to each other, then the coating adhesive makes contact with the crack, and therefore the leakage repairing piece is pasted to the crack.

Description

Technical Field

[0001] The utility model relates to the technical field of pipelines, in particular to a metal compensating hose with an anti-corrosion layer. Background Art

[0002] The gas pipe is a special pipeline for transporting combustible gas. It is a metal gas pipe hose that replaces the traditional clip-on rubber hose. It can solve the defects of rubber hoses such as easy falling off, easy aging, easy insect damage, and short service life. The gas pipe has the characteristics of easy installation, reliable connection, corrosion resistance, no gas blockage, good flexibility, long service life, and can be bent arbitrarily without deformation or gas blocking. The surface soft protective layer material is safer, easier to clean, and beautiful.

[0003] After searching, a Chinese utility model patent (authorization announcement number: CN207213367U) provides a polyethylene gas pipe with anti-corrosion performance, including a gas pipe body, a steel pipe is arranged inside the gas pipe body, an epoxy layer is arranged on the outside of the steel pipe, a first adhesive layer is arranged on the outside of the epoxy layer, a moisture-proof interlayer is arranged on the outside of the first adhesive layer, a second adhesive layer is arranged on the outside of the moisture-proof interlayer, a high-density polyethylene layer is arranged on the outside of the second adhesive layer, an anti-corrosion layer is arranged on the surface of the high-density polyethylene layer, a water-blocking and anti-fouling layer is arranged on the outside of the anti-corrosion layer, and a high-temperature fire-proof layer is arranged on the outside of the water-blocking and anti-fouling layer.

[0004] The above-mentioned existing technology effectively solves the problems of poor corrosion resistance, low compressive strength, susceptibility to climate influence, and high temperature resistance of gas pipes by setting up epoxy layer, moisture-proof interlayer, anti-corrosion layer, water-blocking and anti-fouling layer and high-temperature fireproof layer.

[0005] However, since the gas pipe connecting the household gas pipeline and the underground gas pipeline is usually installed outdoors, the defect of the above-mentioned prior art is that: although it can solve the anti-corrosion problem, due to the many special situations that the gas pipe faces outdoors, the protective layer outside the gas pipe may be damaged or cracked, causing the steel pipe inside the gas pipe to be exposed, causing the steel pipe to be corroded, and thus there is a risk of gas leakage. Therefore, this shortcoming needs to be improved urgently. Utility Model Content

[0006] The purpose of the present invention is to solve the above problems. The present invention provides a metal compensating hose with an anti-corrosion layer, which has the advantage of being able to repair the compensating hose.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: comprising a pipe body, steel sleeves are installed at both ends of the pipe body, nuts for external pipes are installed on the steel sleeves, the pipe body is provided with a corrugated pipe, a woven mesh sleeve and a PVC anti-corrosion layer from the inside to the outside, a repair component for repairing cracks is provided on the outer periphery of the steel sleeve, the repair component moves along the axial direction of the pipe body, the repair component comprises a plurality of fan ring blocks, two adjacent fan ring blocks are connected by a connecting piece, the connecting piece is used to drive the two adjacent fan ring blocks to move toward each other, a leak-proof sheet is provided on the inner wall of the fan ring block, and a coating glue is provided on the inner wall of the leak-proof sheet.

[0008] Preferably, connecting plates are provided at both ends of the fan ring block, connecting holes are provided on the connecting plates, and the connecting parts include connecting rods, which are movably arranged in the connecting holes, and the connecting rods have a first end and a second end, and through holes are provided in the first end and the second end, a first connecting shaft is installed in the through hole of the first end, a first paddle is fixedly installed on the first connecting shaft, a second connecting shaft is installed in the through hole of the second end, a second paddle is fixedly installed on the second connecting shaft, a first protrusion is provided on the first paddle, and a second protrusion is provided on the second paddle.

[0009] Preferably, the first paddle is provided with a groove, and the second paddle is movably provided with a snap ring that is matched with the groove.

[0010] Preferably, a plurality of groups of symmetrical support plates are provided at both ends of the leak-proof plate, and the support plates are arranged on the inner wall of the fan ring block.

[0011] Preferably, the supporting piece is an arc-shaped piece.

[0012] Preferably, the supporting sheet is made of elastic material.

[0013] Preferably, the outer peripheries of the fan ring block, the support piece and the leak-proof piece are covered with a protective film.

[0014] Preferably, the protective film has an adhesive portion.

[0015] Preferably, the fan ring block and the leak-proof piece are detachably matched.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0017] The utility model provides a metal compensating hose with an anti-corrosion layer. The repair component is moved along the axial direction of the pipe body to the crack, and the two fan ring blocks are driven to move toward each other through the connecting piece, so that the coating glue contacts the crack, thereby pasting the leak-proof piece to the crack, thereby repairing the PVC anti-corrosion layer and preventing the internal stainless steel bellows from being corroded. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a cross-sectional structural diagram and a partially enlarged structural diagram of the compensation hose and repair assembly of the utility model;

[0019] Figure 2 This is a schematic diagram of the three-dimensional structure of the repair component of the utility model;

[0020] Figure 3 This is a schematic diagram of the top view of the repair component of the utility model;

[0021] Figure 4 This is a schematic diagram of the cross-sectional structure of the repair component of the utility model;

[0022] Figure 5 for Figure 4 Schematic diagram of the enlarged structure of A in the middle.

[0023] Description of the drawings: 1. Pipe body; 11. Bellows; 12. Braided mesh; 13. PVC anti-corrosion layer; 14. Steel sleeve; 15. Nut; 2. Repair assembly; 21. Fan ring block; 210. Connecting hole; 211. Connecting plate; 22. Sealing piece; 23. Coating glue; 24. Support sheet; 25. Protective film; 251. Adhesive part; 261. First paddle; 262. First protrusion; 263. Groove; 264. First connecting shaft; 27. Connecting rod; 271. Through hole; 281. Second paddle; 282. Second protrusion; 283. Snap ring; 284. Second connecting shaft. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0025] like Figure 1-Figure 5As shown, a metal compensation hose with an anti-corrosion layer includes a pipe body 1, steel sleeves 14 are installed at both ends of the pipe body 1, nuts 15 for external pipes are installed on the steel sleeves 14, and the body is provided with a bellows 11, a braided mesh sleeve 12 and a PVC anti-corrosion layer 13 from the inside to the outside. In this application, the bellows 11, the steel sleeve 14 and the braided mesh sleeve 12 are all made of stainless steel. A repair component 2 for repairing cracks is provided on the periphery of the steel sleeve 14. The repair component 2 moves along the axial direction of the pipe body 1. The repair component 2 includes a plurality of fan ring blocks 21. The fan ring blocks 21 in this application There are two shaped blocks, and the two adjacent fan ring blocks 21 are connected by a connecting piece. The connecting piece is used to drive the two adjacent fan ring blocks 21 to move toward each other. A patch 22 is provided on the inner wall of the fan ring block 21, and a coating glue 23 is provided on the inner wall of the patch 22. By moving the repair component 2 along the axial direction of the pipe body 1 to the crack, and then driving the two fan ring blocks 21 to move toward each other through the connecting piece, the coating glue 23 is brought into contact with the crack, thereby achieving the function of sticking the patch 22 to the crack, thereby achieving the function of repairing the PVC anti-corrosion layer 13.

[0026] Both ends of the sector ring block 21 are provided with connecting plates 211, and the connecting plates 211 are provided with connecting holes 210. The connecting parts include connecting rods 27, which are movably arranged in the connecting holes 210. The connecting rod 27 has a first end and a second end, and the first and second ends are provided with through holes 271. A first connecting shaft 264 is installed in the through hole 271 of the first end, and a first paddle 261 is fixedly installed on the first connecting shaft 264. A second connecting shaft 284 is installed in the through hole 271 of the second end, and a second paddle 281 is fixedly installed on the second connecting shaft 284. The first paddle 261 is provided with a first protrusion 262, and the second paddle 281 is provided with a second protrusion 282. The first protrusion 262 and the second protrusion 282 are semi-elliptical in the present application.

[0027] The first paddle 261 moves between a first position and a second position around the axial direction of the first connecting shaft 264. When the first paddle 261 moves to the second position, the apex of the first protrusion 262 on the first paddle 261 abuts against the connecting plate 211, thereby driving the entire fan ring block 21 to move along the axial direction of the connecting rod 27 toward the side close to the second end.

[0028] The second paddle 281 moves between a third position and a fourth position around the axial direction of the second connecting shaft 284. When the second paddle 281 moves to the fourth position, the apex of the second protrusion 282 on the second paddle 281 abuts against the connecting plate 211, thereby driving the entire fan ring block 21 to move along the axial direction of the connecting rod 27 toward the side close to the first end.

[0029] A groove 263 is defined on the first paddle 261 , and a snap ring 283 is movably defined on the second paddle 281 and is engaged with the groove 263 .

[0030] When the first paddle 261 is in the second position and the second paddle 281 is in the fourth position, the connecting plates 211 on the two fan ring blocks 21 are in abutment with each other, so that the leak-proof pieces 22 in the two fan ring blocks 21 can be bonded to the PVC anti-corrosion layer 13, thereby achieving the effect of repairing the cracks on the PVC anti-corrosion layer 13, and the snap ring 283 can be rotated to move into the groove 263, so as to keep the connecting plates 211 of the two fan ring blocks 21 always in an abutment state, so that the leak-proof piece 22 can be firmly attached to the cracks in the PVC anti-corrosion layer 13, thereby better achieving the repair effect.

[0031] Several groups of symmetrical support sheets 24 are provided at both ends of the leak-proof sheet 22. The support sheets 24 are arranged on the inner wall of the fan ring block 21. The support sheets 24 are made of elastic material and are arc-shaped sheets. The support sheets 24 can prevent the coating glue 23 from contacting the steel sleeve 14 or the PVC anti-corrosion layer 13 too early. Moreover, since the support sheets 24 are arc-shaped elastic sheets, they are more likely to deform, thereby not interfering with the contact between the coating glue 23 and the PVC anti-corrosion layer 13.

[0032] The outer periphery of the fan ring block 21, the support piece 24 and the leak-proof piece 22 is covered with a protective film 25, and the protective film 25 has an adhesive portion 251, through which the protective film 25 can be torn off. The protective film 25 prevents the coating glue 23 from being affected by external impurities.

[0033] During specific use, when cracks appear in the PVC anti-corrosion layer 13, the repair component 2 is moved along the axial direction of the pipe body 1 to the crack, and the protective film 25 is torn off at this time. The first paddle 261 is moved to the second position and the second paddle 281 is moved to the fourth position, so that the connecting plates 211 on the two fan ring blocks 21 are abutted and matched, and at this time the two fan ring blocks 21 are moved to the side close to the pipe body 1, so that the coating glue 23 on the leak-proof piece 22 is in contact with the PVC anti-corrosion layer 13 to achieve bonding. Since the support piece 24 is elastic, the retaining ring 283 is clamped into the groove 263, so that the elastic force generated by the reset of the support piece 24 can be prevented from pushing the two fan ring blocks 21 to move away from each other.

[0034] Further optimized, one end of the sealing piece 22 can be detachably engaged with the inner wall of the fan ring block 21. After the coating glue 23 of the sealing piece 22 is bonded to the PVC anti-corrosion layer 13, the two fan ring blocks 21 are moved away from each other by moving the first paddle 261 to the first position and the second paddle 281 to the third position, so that the sealing piece 22 is disengaged from the fan ring block 21, and the fan ring block 21 can be removed, which makes it more beautiful.

[0035] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0036] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A metal compensating hose with an anti-corrosion layer, comprising a pipe body (1), with steel sleeves (14) installed at both ends of the pipe body (1), and nuts (15) for connecting to external pipes installed on the steel sleeves (14), characterized in that: The pipe body (1) is provided with a corrugated pipe (11), a braided mesh sleeve (12) and a PVC anti-corrosion layer (13) in sequence from the inside to the outside. A repair component (2) for repairing cracks is provided on the outer periphery of the steel sleeve (14). The repair component (2) moves along the axial direction of the pipe body (1). The repair component (2) includes a plurality of fan ring blocks (21). Two adjacent fan ring blocks (21) are connected by a connecting piece. The connecting piece is used to drive the two adjacent fan ring blocks (21) to move toward each other. A leak patch (22) is provided on the inner wall of the fan ring block (21), and a coating glue (23) is provided on the inner wall of the leak patch (22).

2. The metal compensating hose with an anti-corrosion layer according to claim 1, characterized in that: Both ends of the fan ring block (21) are provided with connecting plates (211), and the connecting plates (211) are provided with connecting holes (210). The connecting members all include connecting rods (27), and the connecting rods (27) are movably arranged in the connecting holes (210). The connecting rods (27) have a first end and a second end, and the first and second ends are provided with through holes (271). A first connecting shaft (264) is installed in the through hole (271) of the first end, and a first paddle (261) is fixedly installed on the first connecting shaft (264). A second connecting shaft (284) is installed in the through hole (271) of the second end, and a second paddle (281) is fixedly installed on the second connecting shaft (284). The first paddle (261) is provided with a first protrusion (262), and the second paddle (281) is provided with a second protrusion (282).

3. The metal compensating hose with an anti-corrosion layer according to claim 2, characterized in that: The first paddle (261) is provided with a groove (263), and the second paddle (281) is movably provided with a snap ring (283) that is matched and connected with the groove (263).

4. The metal compensating hose with an anti-corrosion layer according to claim 1, characterized in that: A plurality of groups of symmetrical support pieces (24) are provided at both ends of the leak-proof piece (22), and the support pieces (24) are arranged on the inner wall of the fan ring block (21).

5. The metal compensating hose with an anti-corrosion layer according to claim 4, characterized in that: The supporting piece (24) is an arc-shaped piece.

6. The metal compensating hose with an anti-corrosion layer according to claim 5, characterized in that: The supporting sheet (24) is made of elastic material.

7. The metal compensating hose with an anti-corrosion layer according to claim 5, characterized in that: The outer peripheries of the fan ring block (21), the supporting piece (24) and the leak-proof piece (22) are covered with a protective film (25).

8. The metal compensating hose with an anti-corrosion layer according to claim 7, characterized in that: The protective film (25) has an adhesive portion (251).

9. The metal compensating hose with an anti-corrosion layer according to claim 1, characterized in that: The fan ring block (21) and the leak-proof piece (22) are detachably matched.

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