CN105465507A - Compression-type stainless-steel corrugated pipe for gas pipeline and assembly method of compression-type stainless-steel corrugated pipe - Google Patents
Compression-type stainless-steel corrugated pipe for gas pipeline and assembly method of compression-type stainless-steel corrugated pipe Download PDFInfo
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- CN105465507A CN105465507A CN201610021576.5A CN201610021576A CN105465507A CN 105465507 A CN105465507 A CN 105465507A CN 201610021576 A CN201610021576 A CN 201610021576A CN 105465507 A CN105465507 A CN 105465507A
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- bellows
- copper nut
- stainless steel
- nut
- corrugated stainless
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L19/00—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts
- F16L19/02—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member
- F16L19/0206—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member the collar not being integral with the pipe
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L33/00—Arrangements for connecting hoses to rigid members; Rigid hose connectors, i.e. single members engaging both hoses
- F16L33/26—Arrangements for connecting hoses to rigid members; Rigid hose connectors, i.e. single members engaging both hoses specially adapted for hoses of metal
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Joints With Pressure Members (AREA)
- Gasket Seals (AREA)
- Joints Allowing Movement (AREA)
- Rigid Pipes And Flexible Pipes (AREA)
Abstract
The invention discloses a compression-type stainless-steel corrugated pipe for a gas pipeline and an assembly method of the compression-type stainless-steel corrugated pipe. The stainless-steel corrugated pipe comprises a first copper nut, a tapered sealing washer, a male adapter, a short steel sleeve, a corrugated pipe, a covering layer, a long steel sleeve, a flat sealing washer and a second copper nut. When used for connecting a main gas pipeline and a gas cooker, the stainless-steel corrugated pipe has the advantages of being applicable to various pipeline connectors, convenient to mount and replace and simple in mounting and replacing step, providing a reliable locking force and a good sealing property, being firm, safe and effective in connection, resisting high and low temperature, having an attractive appearance, having the outer covering layer with good corrosion resistance and a long service life, and being capable of being used in combination with a threaded connector and a corrugated connector freely.
Description
Technical field
The present invention relates to a kind of bellows and assembling method thereof, particularly relate to a kind of compression type corrugated stainless steel tubing for gas pipeline and assembling method thereof.
Background technique
Gas appliance connection is exclusively used in bellows and connects combustion gas main line, and the flexible connecting lines of the sources of the gas such as transmission combustion gas, coal gas, liquefied petroleum gas or biogas and stationary gas kitchen range, it is very general in the prior art.Bellows adopts metal charge to make, there is the soft connecting tube of the metal material of helical fissure, bellows has certain flexibility and can arbitrarily bend and can not bend, and have the advantage of hard metal tubing concurrently, the installation of rubber pipe can not be produced and exchange inconvenience, can not under bending state easy some retardation, can not produce corrosion-resistant, easily aging, working life is short and easy occur leak phenomenon.
(1) structural imperfection of bellows in prior art:
But the bellows two ends used in prior art all adopt inipple mode or two ends all to adopt Green's joint style to connect combustion gas main line and gas range, although it is reliably easy to connect, thoroughly can stop leakage phenomenon, avoid causing accident potential that is poisoning, explosive incident because of gas leakage, but Placement underaction; Meanwhile, prior art can be tightly connected with the hard pipeline of steel or PVC material to make bellows, adopts the prefabricated joint of engineering in the market or adopts the joint of clamp sleeve, but said structure is at installation and functionally existing defects:
1. when the joint adopting engineering prefabricated:
See China Patent No. be " plug-in spiral corrugated metal flexible coupling pipe " of ZL97225276.2, ZL97225278.9 " spiral corrugated metal flexible coupling pipe " disclose structure and scheme that two kinds of processing have the soft connecting tube of spiral corrugated metal pipe, its two ends are welded with the thread connecting joint of metal; These three kinds relate to scheme and have employed corrugated metal tube body, there is certain flexibility can arbitrarily bend and can not bend, and it is convenient and reliable to be threaded, the phenomenon such as thoroughly can stop gas leakage, choke, leak, thus elimination causes accident potential that is poisoning, explosive incident because of gas leakage, practical effect is fine.But due in above-mentioned three kinds of technological schemes, the termination of corrugated flexible metal tube main body all must be welded with a metal joint, this just limits its length dimension, once determine just cannot change dispatching from the factory, more cannot carry out free cutting according to Len req at the scene.And various installation occasion of can not being used widely.
2. when adopting clamp sleeve joint:
See " a kind of linkage structure of bellows of improvement " that China Patent No. is ZL200810059270.4, this linkage structure comprises two liners and a nut, the inner side of liner has the shape matched with bellows outer surface, spiro cap is on bellows, nut is connected with adapter by screw thread, and the shade of nut is blocked in the end of above-mentioned liner.
The linkage structure of above-mentioned bellows utilizes liner to withhold on bellows, and bellows can not be deviate from; Then utilize nut to block liner, after nut is connected with adapter, just makes bellows be fixedly connected with adapter.Seal ring set between adapter and bellows can play the effect of sealing, occurs leakage phenomenon to prevent joint.
There is provided coupling mechanism force insecure situation because the limit stoper of bellows when installing exists, if operator are excessive force when locking, the limit stoper utilizing and coordinate with the single crest shape of bellows may be damaged, cause position-limit mechanism to fracture or the single crest gross distortion of bellows, cause enough coupling mechanism forces cannot being provided and causing leakage.In order to the part of repairing damage need excise relevant bellows crest, effect and efficiency are installed in impact thus.Simultaneously because seal face when bellows is produced may exist sharp burrs or fast mouth situation, easily cause when applying excessive helical pressure to it or repeatedly compressing corrugated pipe end plane to cut Sealing, cause Sealing to damage and affect the sealing effect of bellows.
(2) the assembling method defect of bellows structure in prior art:
1. for the assembling method of engineering preparation joint:
See " plug-in spiral corrugated metal flexible coupling pipe " that China Patent No. is ZL97225276.2, ZL97225278.9's " spiral corrugated metal flexible coupling pipe " mount scheme of disclosed two kinds of corrugated metal pipes, the first adopts corrugated metal pipe and connecting head welding fabrication, recycling connecting head is threaded with coupling nut, the extruding of both utilizations makes therebetween seal ring deform on fixing Green's joint again, this assembling mode adopts and is welded to connect corrugated metal pipe and connecting head, number of assembling steps is loaded down with trivial details, high to welding requirements for avoiding welding the overlap caused, the second is after metal bellows two ends socket coupling nut, again metal bellows is welded with adpting flange, adpting flange has boss, utilizing the boss of adpting flange to coordinate with fuel tube street corner makes seal ring therebetween deform, this assembling mode adopts and is welded to connect metal bellows and adpting flange, number of assembling steps is loaded down with trivial details, coupling nut is caused to rotate inconvenience for avoiding welding the overlap caused, therefore high to welding requirements, and coupling nut rotation on metal bellows can cause it to the wearing and tearing of metal bellows, reduce the life-span.
2. for the assembling method of clamp sleeve joint:
It is the mount scheme of " a kind of linkage structure of bellows of improvement " disclosed bellows of ZL200810059270.4 see China Patent No., it is first set with on bellows by nut, again two panels liner is sleeved on the outer surface of bellows, the inner side of liner has the shape matched with bellows outer surface, utilize the screw-thread fit of pipe joint and nut, the shade of nut is made to be blocked in the end of above-mentioned liner, and then fixing bellows, if operator are excessive force when locking, the limit stoper utilizing and coordinate with the single crest shape of bellows may be damaged, position-limit mechanism is caused to fracture or the single crest gross distortion of bellows, cause enough coupling mechanism forces cannot being provided and causing leakage.
(3) other defect of bellows in prior art:
1. when the two ends of bellows all adopt same joint:
The two ends of metal bellows of the prior art all adopt the joint of identical type, but when combustion gas main line and gas range use different types of joint between the two, can cause the inconvenience that bellows connects.What what such as combustion gas main line adopted being inipple and gas range adopted is Green's joint, then cannot directly use metal bellows of the prior art to connect both.Only there are the two ends of bellows to adopt mounting type during same tip to have introduction in prior art, also do not adopt the mounting type of different joint to provide enlightenment to bellows two ends.
2. when bellows does not have coating:
The outside of metal bellows of the prior art lacks coating, outside the metal section branch of bellows is exposed to, affects attractive in appearance, metallic member so also can be made to corrode it by extraneous medium effect, can be hurt simultaneously, easily cause leakage accident by extraneous sharp weapon.Only do not adopt the mounting type of peripheral coating to have introduction to bellows in prior art, do not adopt the mounting type of peripheral coating to provide enlightenment to bellows yet.
Owing to there is above-mentioned defect in prior art, market in urgent need is a kind of is applicable to pipelines interface, have improve operator installation efficiency, reliably coupling mechanism force is provided and reduces the seal leakage situation that the damage of Sealing is caused and to occur and safer, effectively and there is corrugated stainless steel tubing and the assembling method thereof of outside coating.
Summary of the invention
The object of this invention is to provide a kind of compression type corrugated stainless steel tubing for gas pipeline and assembling method thereof, the shortcoming of above-mentioned prior art can be overcome, to existing different types of joint, there is applicability widely, reach good dismounting efficiency, be connected firmly, the effects such as long service life.
For achieving the above object, the invention provides following technological scheme: a kind of assembling method of the compression type corrugated stainless steel tubing for gas pipeline, described corrugated stainless steel tubing comprises: the first copper nut, cone seal packing ring, male connection, short steel bushing, bellows, coating, long steel bushing, flat gasket circle and the second copper nut; Described corrugated stainless steel tubing adopts following steps assembling: 1) described bellows adopts 304 Stainless Steel Bands of 0.2mm thickness to be welded into pipe, the equidistant corrugated body of formation rule after post forming is carried out to pipe, namely the bellows segment be positioned in the middle part of described bellows is formed, the diameter of described bellows is 13mm, the pitch of waves is 3mm, crest height is 1.7mm, carries out solution treatment to its surface, makes the inside and outside light of described bellows; 2) the described coating of cylindrical shape is set on the outer surface of described bellows segment of described bellows uniformly; 3) described short steel bushing is ladder bushing shape, described short steel bushing is inserted in from the straight length of the one end being positioned at described pipe, make its smaller diameter end be set in the straight length of described bellows, its larger diameter end is connected with the bellows segment of described bellows and partly covers described coating; 4) described long steel bushing is ladder bushing shape, described long steel bushing is inserted in from the straight length of the other end being positioned at described pipe, make its smaller diameter end be set in the straight length of the other end of described bellows, its larger diameter end is connected with the other end of the bellows segment of described bellows and partly covers described coating; 5) one end of described male connection is tubular, the other end is outer-hexagonal nut shape, the straight length direction of the other end of described male connection from one end of described pipe is inserted in, makes it rotatable and the smaller diameter end being set in described short steel bushing that can move axially; 6) described second copper nut is outer-hexagonal nut shape and has axial tubular boss, is inserted in the straight length direction of described tubular boss from the other end of described pipe, makes it rotatable and the smaller diameter end being set in described long steel bushing that can move axially; 7) process the straight length of two on described pipe, one end formation port part has the stepped openings section that diameter becomes large gradually, and the other end forms port part and has radial outstanding flange; 8) described cone seal packing ring is placed on described first copper nut inner, described first copper nut utilizes screw-thread fit to make to engage with one end of described male connection; 9) described flat gasket circle is placed on described second copper nut inner, with described lip fits; 10) corrugated stainless steel tubing forming finished product is detected, and packaging warehouse-in.
Preferably, carry out hermetic seal test to finished product bellows, test pressure is 0.3Pma/1min; Described coating is PVC protective layer.
Preferably, described flat gasket circle is processed into u-shaped by natural rubber, and interior warp is 12mm, and external diameter is 18.5mm, and thickness is 3mm, and smooth surface is complete.
Preferably, described first copper nut adopts HPb59-1 brass to be finish-machined to the nut that specification is M18, and guarantee that cone seal packing ring precision abuts in the first shape counterface, Nickel Plating Treatment is carried out on surface, wear resistant corrosion resistant.
Preferably, described second copper nut adopts HPb59-1 brass to be finish-machined to the nut that specification is G1/2, and Nickel Plating Treatment is carried out on surface, wear resistant corrosion resistant.
Carry out the corrugated stainless steel tubing assembled according to the assembling method of the compression type corrugated stainless steel tubing for gas pipeline, comprising: the first copper nut, cone seal packing ring, male connection, short steel bushing, bellows, coating, long steel bushing, flat gasket circle and the second copper nut; Described first copper nut is outer-hexagonal nut shape, connecting tube interface and described male connection, and its one end connecting described male connection has internal thread; The barrel of described male connection one end has the outside thread engaged with the internal thread of described first copper nut; Described cone seal packing ring is arranged between described first copper nut and described male connection; The smaller diameter end of described short steel bushing and the other end of described male connection are slidably connected; The smaller diameter end of described long steel bushing and one end of described second copper nut are slidably connected, and the length of the smaller diameter end of described long steel bushing is greater than the length of the smaller diameter end of described short steel bushing; The described tubular boss of described second copper nut is positioned at one end of described second copper nut and is slidably located in the smaller diameter end of described long steel bushing, and the other end of described second copper nut has internal thread, for connecting another kind of pipe joint; It is inner that described flat gasket circle is arranged on described second copper nut.
Preferably, the stepped openings section of described bellows is arranged between described cone seal packing ring and described male connection; The flange that the radial direction of described bellows is outstanding is arranged between described second copper nut and described flat gasket circle.
Preferably, the annular seal packing ring of described cone seal packing ring to be section be isosceles trapezoid; Described flat gasket circle is the rectangular U-shaped seal washer of section.
Preferably, the inside of described first copper nut has the first shape counterface coordinated with described cone seal packing ring, and described shape counterface connects the inwall of two different inner diameters of described first copper nut; The tubular one end of described male connection has the junction plane coordinated with described cone seal cast; Utilize the screw-thread fit of described first copper nut and described male connection to make described conical seal ring produce resiliently deformable, make it seal and be fixed on Green's interface of pipeline.
Preferably, the inside of described second copper nut has the second shape counterface that the flange-shape of giving prominence to the radial direction of described bellows coordinates, and described second shape counterface connects the inwall of two different inner diameters of described second nut; Another surface of the flange that the radial direction of described bellows is given prominence to coordinates with described flat gasket circle; Second copper nut utilizes internal thread to be connected with the threaded coupling of pipeline, and the flange utilizing the radial direction of described threaded coupling and described bellows outstanding makes described flat gasket circle produce resiliently deformable reaches sealing effect.
The invention provides a kind of compression type corrugated stainless steel tubing for gas pipeline and assembling method thereof, this bellows is used to connect combustion gas main line and gas range, there is applicable pipelines interface, installation is with exchange convenience and operational sequence is succinct, there is provided coupling mechanism force reliable sealing performance good, be connected firmly safe and effective, high-low temperature resistant, beautiful shape, there is outside coating corrosion resistance and good, long service life, can effectively prevent damaged by rats or extraneous sharp weapon from scratching, can use by independent assortment with threaded coupling and Green's interface, there is length, short steel bushing can in case get rusty and ensure that nut slides thereon and improve dismounting efficiency.
Accompanying drawing illustrates:
Fig. 1 is a kind of for the compression type corrugated stainless steel tubing of gas pipeline and the structural representation of assembling method thereof;
Fig. 2 is a kind of enlarged view for the compression type corrugated stainless steel tubing of gas pipeline and the bellows of assembling method thereof;
Fig. 3 is a kind of enlarged view of the end, one end for the compression type corrugated stainless steel tubing of gas pipeline and the bellows of assembling method thereof;
Fig. 4 is a kind of enlarged view of the other end end for the compression type corrugated stainless steel tubing of gas pipeline and the bellows of assembling method thereof;
Fig. 5 is a kind of schematic diagram of the bellows segment for the compression type corrugated stainless steel tubing of gas pipeline and the bellows of assembling method thereof;
Fig. 6 is a kind of schematic diagram of the cone seal packing ring for the compression type corrugated stainless steel tubing of gas pipeline and the bellows of assembling method thereof;
Fig. 7 is a kind of schematic diagram of the first copper nut for the compression type corrugated stainless steel tubing of gas pipeline and the bellows of assembling method thereof;
Fig. 8 is a kind of schematic diagram of the second copper nut for the compression type corrugated stainless steel tubing of gas pipeline and the bellows of assembling method thereof;
Fig. 9 is a kind of schematic diagram of the male connection for the compression type corrugated stainless steel tubing of gas pipeline and the bellows of assembling method thereof;
Figure 10 is a kind of schematic diagram of the short steel bushing for the compression type corrugated stainless steel tubing of gas pipeline and the bellows of assembling method thereof;
Figure 11 is a kind of schematic diagram of the long steel bushing for the compression type corrugated stainless steel tubing of gas pipeline and the bellows of assembling method thereof.
Embodiment:
For making object of the invention process, technological scheme and advantage clearly, below in conjunction with the accompanying drawing in the embodiment of the present invention, the technological scheme in the embodiment of the present invention is further described in more detail.In the accompanying drawings, same or similar label represents same or similar element or has element that is identical or similar functions from start to finish.Described embodiment is the present invention's part embodiment, instead of whole embodiments.Be exemplary below by the embodiment be described with reference to the drawings, be intended to for explaining the present invention, and can not limitation of the present invention be interpreted as.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.Below in conjunction with accompanying drawing, embodiments of the invention are described in detail.
In describing the invention; it will be appreciated that; term " " center ", " longitudinal direction ", " transverse direction ", "front", "rear", "left", "right", " vertically ", " level ", " top ", " end " " interior ", " outward " etc. instruction orientation or position relationship be based on orientation shown in the drawings or position relationship; be only the present invention for convenience of description and simplified characterization; instead of instruction or imply indication device or element must have specific orientation, with specific azimuth configuration and operation, therefore can not be interpreted as limiting the scope of the invention.
In the present invention one broad embodiment, for an assembling method for the compression type corrugated stainless steel tubing of gas pipeline, described corrugated stainless steel tubing comprises: the first copper nut, cone seal packing ring, male connection, short steel bushing, bellows, coating, long steel bushing, flat gasket circle and the second copper nut; Described corrugated stainless steel tubing adopts following steps assembling: 1) described bellows adopts 304 Stainless Steel Bands of 0.2mm thickness to be welded into pipe, the equidistant corrugated body of formation rule after post forming is carried out to pipe, namely the bellows segment be positioned in the middle part of described bellows is formed, the diameter of described bellows is 13mm, the pitch of waves is 3mm, crest height is 1.7mm, carries out solution treatment to its surface, makes the inside and outside light of described bellows; 2) the described coating of cylindrical shape is set on the outer surface of described bellows segment of described bellows uniformly; 3) described short steel bushing is ladder bushing shape, described short steel bushing is inserted in from the straight length of the one end being positioned at described pipe, make its smaller diameter end be set in the straight length of described bellows, its larger diameter end is connected with the bellows segment of described bellows and partly covers described coating; 4) described long steel bushing is ladder bushing shape, described long steel bushing is inserted in from the straight length of the other end being positioned at described pipe, make its smaller diameter end be set in the straight length of the other end of described bellows, its larger diameter end is connected with the other end of the bellows segment of described bellows and partly covers described coating; 5) one end of described male connection is tubular, the other end is outer-hexagonal nut shape, the straight length direction of the other end of described male connection from one end of described pipe is inserted in, makes it rotatable and the smaller diameter end being set in described short steel bushing that can move axially; 6) described second copper nut is outer-hexagonal nut shape and has axial tubular boss, is inserted in the straight length direction of described tubular boss from the other end of described pipe, makes it rotatable and the smaller diameter end being set in described long steel bushing that can move axially; 7) process the straight length of two on described pipe, one end formation port part has the stepped openings section that diameter becomes large gradually, and the other end forms port part and has radial outstanding flange; 8) described cone seal packing ring is placed on described first copper nut inner, described first copper nut 1 utilizes screw-thread fit to make to engage with one end of described male connection 3; 9) described flat gasket circle is placed on described second copper nut inner, with described lip fits; 10) corrugated stainless steel tubing forming finished product is detected, and packaging warehouse-in.
Carry out the corrugated stainless steel tubing assembled according to the assembling method of the compression type corrugated stainless steel tubing for gas pipeline, comprising: the first copper nut, cone seal packing ring, male connection, short steel bushing, bellows, coating, long steel bushing, flat gasket circle and the second copper nut; Described first copper nut is outer-hexagonal nut shape, connecting tube interface and described male connection, and its one end connecting described male connection has internal thread; The barrel of described male connection one end has the outside thread engaged with the internal thread of described first copper nut; Described cone seal packing ring is arranged between described first copper nut and described male connection; The smaller diameter end of described short steel bushing and the other end of described male connection are slidably connected; The smaller diameter end of described long steel bushing and one end of described second copper nut are slidably connected, and the length of the smaller diameter end of described long steel bushing is greater than the length of the smaller diameter end of described short steel bushing; The described tubular boss of described second copper nut is positioned at one end of described second copper nut and is slidably located in the smaller diameter end of described long steel bushing, and the other end of described second copper nut has internal thread, for connecting another kind of pipe joint; It is inner that described flat gasket circle is arranged on described second copper nut.
Use the compression type corrugated stainless steel tubing for gas pipeline of the application, this bellows is used to connect combustion gas main line and gas range, there is applicable pipelines interface, installation is with exchange convenience and operational sequence is succinct, , there is provided coupling mechanism force reliable sealing performance good, be connected firmly safe and effective, high-low temperature resistant, beautiful shape, there is outside coating corrosion resistance and good, long service life, can effectively prevent damaged by rats or extraneous sharp weapon from scratching, can use by independent assortment with threaded coupling and Green's interface, there is length, short steel bushing can in case get rusty and ensure that nut slides thereon and improve dismounting efficiency.
As shown in Figure 1, for an assembling method for the compression type corrugated stainless steel tubing of gas pipeline, described corrugated stainless steel tubing comprises: the first copper nut 1, cone seal packing ring 2, male connection 3, short steel bushing 4, bellows 5, coating 6, long steel bushing 7, flat gasket circle 8 and the second copper nut 9.
Described corrugated stainless steel tubing adopts following steps assembling: 1) described bellows 5 adopts 304 Stainless Steel Bands of 0.2mm thickness to be welded into pipe, the equidistant corrugated body of formation rule after post forming is carried out to pipe, namely the bellows segment be positioned in the middle part of described bellows 5 is formed, the diameter of described bellows 5 is 13mm, the pitch of waves is 3mm, crest height is 1.7mm, carries out solution treatment to its surface, makes the inside and outside light of described bellows 5; 2) the described coating 6 of cylindrical shape is set in uniformly on the outer surface of described bellows segment of described bellows 5; 3) described short steel bushing 4 is in ladder bushing shape, described short steel bushing 4 is inserted in from the straight length of the one end being positioned at described pipe, make its smaller diameter end be set in the straight length of described bellows 5, its larger diameter end is connected with the bellows segment of described bellows 5 and partly covers described coating 6; 4) described long steel bushing 7 is in ladder bushing shape, described long steel bushing 7 is inserted in from the straight length of the other end being positioned at described pipe, make its smaller diameter end be set in the straight length of the other end of described bellows 5, its larger diameter end is connected with the other end of the bellows segment of described bellows 5 and partly covers described coating 6; 5) one end of described male connection 3 is tubular, the other end is outer-hexagonal nut shape, the straight length direction of the other end of described male connection 3 from one end of described pipe is inserted in, makes it rotatable and the smaller diameter end being set in described short steel bushing 4 that can move axially; 6) described second copper nut 9 is outer-hexagonal nut shape and has axial tubular boss, the straight length direction of described tubular boss from the other end of described pipe is inserted in, makes it rotatable and the smaller diameter end being set in described long steel bushing 7 that can move axially; 7) process the straight length of two on described pipe, one end formation port part has the stepped openings section that diameter becomes large gradually, and the other end forms port part and has radial outstanding flange; 8) described cone seal packing ring 2 is placed on described first copper nut 1 inner, described first copper nut 1 utilizes screw-thread fit to make to engage with one end of described male connection 3; 9) described flat gasket circle 8 is placed on described second copper nut 9 inner, with described lip fits; 10) corrugated stainless steel tubing forming finished product is detected, and packaging warehouse-in.
Carry out hermetic seal test to finished product bellows, test pressure is 0.3Pma/1min; Described coating 6 is PVC protective layer.
Described flat gasket circle 8 is processed into u-shaped by natural rubber, and interior warp is 12mm, and external diameter is 18.5mm, and thickness is 3mm, and smooth surface is complete.
Described first copper nut 1 adopt HPb59-1 brass to be finish-machined to nut that specification is M18, guarantee that cone seal packing ring 2 precision abuts in the first shape counterface, Nickel Plating Treatment is carried out on surface, wear resistant corrosion resistant.
Described second copper nut 9 adopt HPb59-1 brass to be finish-machined to nut that specification is G1/2, Nickel Plating Treatment is carried out on surface, wear resistant corrosion resistant.
As Figure 1-10 shows, carry out the corrugated stainless steel tubing assembled according to the assembling method of the compression type corrugated stainless steel tubing for gas pipeline, comprising: the first copper nut 1, cone seal packing ring 2, male connection 3, short steel bushing 4, bellows 5, coating 6, long steel bushing 7, flat gasket circle 8 and the second copper nut 9; Described first copper nut 1 is outer-hexagonal nut shape, connecting tube interface and described male connection 3, and its one end connecting described male connection 3 has internal thread; The barrel of described male connection 3 one end has the outside thread engaged with the internal thread of described first copper nut 1; Described cone seal packing ring 2 is arranged between described first copper nut 1 and described male connection 3; The smaller diameter end of described short steel bushing 4 and the other end of described male connection 3 are slidably connected; The smaller diameter end of described long steel bushing 7 and one end of described second copper nut 9 are slidably connected, and the length of the smaller diameter end of described long steel bushing 7 is greater than the length of the smaller diameter end of described short steel bushing 4; The described tubular boss of described second copper nut is positioned at one end of described second copper nut 9 and is slidably located in the smaller diameter end of described long steel bushing 7, and the other end of described second copper nut 9 has internal thread, for connecting another kind of pipe joint; It is inner that described flat gasket circle 8 is arranged on described second copper nut 9.
The stepped openings section of described bellows 5 is arranged between described cone seal packing ring 2 and described male connection 3; The flange that the radial direction of described bellows 5 is outstanding is arranged between described second copper nut 9 and described flat gasket circle 8.
Described cone seal packing ring 2 for section be the annular seal packing ring of isosceles trapezoid; Described flat gasket circle 8 is the rectangular U-shaped seal washer of section.
The inside of described first copper nut 1 has the first shape counterface coordinated with described cone seal packing ring 2, and described shape counterface connects the inwall of two different inner diameters of described first copper nut 1; Described tubular one end of male connection 3 has the junction plane coordinated with described conical seal ring 2 shape; Utilize described first copper nut 1 to make described conical seal ring 2 produce resiliently deformable with the screw-thread fit of described male connection 3, make it seal and be fixed on Green's interface of pipeline.
The inside of described second copper nut 9 has the second shape counterface that the flange-shape of giving prominence to the radial direction of described bellows 5 coordinates, and described second shape counterface connects the inwall of two different inner diameters of described second nut 9; Another surface of the flange that the radial direction of described bellows 5 is given prominence to coordinates with described flat gasket circle 8; Second copper nut 9 utilizes internal thread to be connected with the threaded coupling of pipeline, and the flange utilizing the radial direction of described threaded coupling and described bellows 5 outstanding makes described flat gasket circle 8 produce resiliently deformable reaches sealing effect.
Finally it is to be noted: above embodiment only in order to technological scheme of the present invention to be described, is not intended to limit.Although with reference to previous embodiment to invention has been detailed description, those of ordinary skill in the art is to be understood that: it still can be modified to the technological scheme described in foregoing embodiments, or carries out equivalent replacement to wherein portion of techniques feature; And these amendments or replacement, do not make the essence of appropriate technical solution depart from the spirit and scope of various embodiments of the present invention technological scheme.
Claims (10)
1. for an assembling method for the compression type corrugated stainless steel tubing of gas pipeline, described corrugated stainless steel tubing comprises: the first copper nut (1), cone seal packing ring (2), male connection (3), short steel bushing (4), bellows (5), coating (6), long steel bushing (7), flat gasket circle (8) and the second copper nut (9); It is characterized in that: described corrugated stainless steel tubing adopts following steps assembling:
1) described bellows (5) adopts 304 Stainless Steel Bands of 0.2mm thickness to be welded into pipe, the equidistant corrugated body of formation rule after post forming is carried out to pipe, namely the bellows segment being positioned at described bellows (5) middle part is formed, the diameter of described bellows (5) is 13mm, the pitch of waves is 3mm, crest height is 1.7mm, carries out solution treatment to its surface, makes the inside and outside light of described bellows (5);
2) the described coating (6) of cylindrical shape is set on the outer surface of the described bellows segment of described bellows (5) uniformly;
3) described short steel bushing (4) is in ladder bushing shape, described short steel bushing (4) is inserted in from the straight length of the one end being positioned at described pipe, make its smaller diameter end be set in the straight length of described bellows (5), its larger diameter end is connected with the bellows segment of described bellows (5) and partly covers described coating (6);
4) described long steel bushing (7) is in ladder bushing shape, described long steel bushing (7) is inserted in from the straight length of the other end being positioned at described pipe, make its smaller diameter end be set in the straight length of the other end of described bellows (5), its larger diameter end is connected with the other end of the bellows segment of described bellows (5) and partly covers described coating (6);
5) one end of described male connection (3) is tubular, the other end is outer-hexagonal nut shape, the straight length direction of the other end of described male connection (3) from one end of described pipe is inserted in, makes it rotatable and the smaller diameter end being set in described short steel bushing (4) that can move axially;
6) described second copper nut (9) has axial tubular boss in outer-hexagonal nut shape, the straight length direction of described tubular boss from the other end of described pipe is inserted in, makes it rotatable and the smaller diameter end being set in described long steel bushing (7) that can move axially;
7) process the straight length of two on described pipe, one end formation port part has the stepped openings section that diameter becomes large gradually, and the other end forms port part and has radial outstanding flange;
8) described cone seal packing ring (2) is placed on described first copper nut (1) inner, described first copper nut (1) utilizes screw-thread fit to make to engage with one end of described male connection (3);
9) described flat gasket circle (8) is placed on described second copper nut (9) inner, with described lip fits;
10) corrugated stainless steel tubing forming finished product is detected, and packaging warehouse-in.
2. the assembling method of a kind of compression type corrugated stainless steel tubing for gas pipeline according to claim 1, it is characterized in that: carry out hermetic seal test to finished product bellows, test pressure is 0.3Pma/1min; Described coating (6) is PVC protective layer.
3. the assembling method of a kind of compression type corrugated stainless steel tubing for gas pipeline according to claim 2, it is characterized in that: described flat gasket circle (8) is processed into u-shaped by natural rubber, and interior warp is 12mm, and external diameter is 18.5mm, thickness is 3mm, and smooth surface is complete.
4. the assembling method of a kind of compression type corrugated stainless steel tubing for gas pipeline according to claim 3, it is characterized in that: described first copper nut (1) adopts HPb59-1 brass to be finish-machined to the nut that specification is M18, guarantee that cone seal packing ring (2) precision abuts in the first shape counterface, Nickel Plating Treatment is carried out on surface, wear resistant corrosion resistant.
5. the assembling method of a kind of compression type corrugated stainless steel tubing for gas pipeline according to claim 4, it is characterized in that: described second copper nut (9) adopts HPb59-1 brass to be finish-machined to the nut that specification is G1/2, Nickel Plating Treatment is carried out on surface, wear resistant corrosion resistant.
6. carry out the corrugated stainless steel tubing assembled according to the assembling method of the compression type corrugated stainless steel tubing for gas pipeline according to claim 1, comprising: the first copper nut (1), cone seal packing ring (2), male connection (3), short steel bushing (4), bellows (5), coating (6), long steel bushing (7), flat gasket circle (8) and the second copper nut (9); Described first copper nut (1) in outer-hexagonal nut shape, connecting tube interface and described male connection (3), its one end connecting described male connection (3) has internal thread; The barrel of described male connection (3) one end has the outside thread engaged with the internal thread of described first copper nut (1); Described cone seal packing ring (2) is arranged between described first copper nut (1) and described male connection (3); The smaller diameter end of described short steel bushing (4) and the other end of described male connection (3) are slidably connected; The smaller diameter end of described long steel bushing (7) and one end of described second copper nut (9) are slidably connected, and the length of the smaller diameter end of described long steel bushing (7) is greater than the length of the smaller diameter end of described short steel bushing (4); The described tubular boss of described second copper nut (9) is positioned at one end of described second copper nut (9) and is slidably located in the smaller diameter end of described long steel bushing (7), the other end of described second copper nut (9) has internal thread, for connecting another kind of pipe joint; It is inner that described flat gasket circle (8) is arranged on described second copper nut (9).
7. a kind of assembling method according to the compression type corrugated stainless steel tubing for gas pipeline according to claim 6 carries out the corrugated stainless steel tubing assembled, it is characterized in that: the stepped openings section of described bellows (5) is arranged between described cone seal packing ring (2) and described male connection (3); The flange that the radial direction of described bellows (5) is outstanding is arranged between described second copper nut (9) and described flat gasket circle (8).
8. a kind of assembling method according to the compression type corrugated stainless steel tubing for gas pipeline according to claim 7 carries out the corrugated stainless steel tubing assembled, it is characterized in that: described cone seal packing ring (2) for section be the annular seal packing ring of isosceles trapezoid; Described flat gasket circle (8) is the rectangular U-shaped seal washer of section.
9. a kind of assembling method according to the compression type corrugated stainless steel tubing for gas pipeline according to claim 8 carries out the corrugated stainless steel tubing assembled, it is characterized in that: the inside of described first copper nut (1) has the first shape counterface coordinated with described cone seal packing ring (2), and described shape counterface connects the inwall of two different inner diameters of described first copper nut (1); Described male connection (3) tubular one end has the junction plane coordinated with described conical seal ring (2) shape; Utilize described first copper nut (1) to make described conical seal ring (2) produce resiliently deformable with the screw-thread fit of described male connection (3), make it seal and be fixed on Green's interface of pipeline.
10. a kind of assembling method according to the compression type corrugated stainless steel tubing for gas pipeline according to claim 9 carries out the corrugated stainless steel tubing assembled, it is characterized in that: the inside of described second copper nut (9) has the second shape counterface that the flange-shape of giving prominence to the radial direction of described bellows (5) coordinates, and described second shape counterface connects the inwall of two different inner diameters of described second nut (9); Another surface of the flange that the radial direction of described bellows (5) is given prominence to coordinates with described flat gasket circle (8); Second copper nut (9) utilizes internal thread to be connected with the threaded coupling of pipeline, and the flange utilizing the radial direction of described threaded coupling and described bellows (5) outstanding makes described flat gasket circle (8) produce resiliently deformable reaches sealing effect.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108317319A (en) * | 2018-04-04 | 2018-07-24 | 南京知行管业有限公司 | A kind of corrugated flexible hose fastener |
| CN110230741A (en) * | 2019-07-11 | 2019-09-13 | 芜湖泰和管业股份有限公司 | A kind of bellows of the hard seal nipple unit of corrugated stainless steel tubing and the application connector |
| CN110542121A (en) * | 2018-05-29 | 2019-12-06 | 青岛海尔智慧厨房电器有限公司 | Connection structure and gas-cooker |
| CN111185755A (en) * | 2020-01-22 | 2020-05-22 | 温州职业技术学院 | Gas pipeline assembly assembling equipment |
| CN111396655A (en) * | 2020-03-18 | 2020-07-10 | 北京市自来水集团禹通市政工程有限公司 | Quick change-over joint |
| CN111457173A (en) * | 2020-05-25 | 2020-07-28 | 重庆共启科技有限公司 | Compression type stainless steel corrugated pipe for gas pipeline and assembling method thereof |
| CN113714685A (en) * | 2021-07-27 | 2021-11-30 | 常州市镭烁光电科技有限公司 | Corrugated pipe welding device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108317319A (en) * | 2018-04-04 | 2018-07-24 | 南京知行管业有限公司 | A kind of corrugated flexible hose fastener |
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| CN110230741A (en) * | 2019-07-11 | 2019-09-13 | 芜湖泰和管业股份有限公司 | A kind of bellows of the hard seal nipple unit of corrugated stainless steel tubing and the application connector |
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| CN111396655A (en) * | 2020-03-18 | 2020-07-10 | 北京市自来水集团禹通市政工程有限公司 | Quick change-over joint |
| CN111457173A (en) * | 2020-05-25 | 2020-07-28 | 重庆共启科技有限公司 | Compression type stainless steel corrugated pipe for gas pipeline and assembling method thereof |
| CN113714685A (en) * | 2021-07-27 | 2021-11-30 | 常州市镭烁光电科技有限公司 | Corrugated pipe welding device |
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| CN105465507B (en) | 2017-09-29 |
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