CN101270840A - Non-welding fabrication type fire-fighting spraying metal flexible pipe and production method - Google Patents
Non-welding fabrication type fire-fighting spraying metal flexible pipe and production method Download PDFInfo
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- CN101270840A CN101270840A CNA2008100530801A CN200810053080A CN101270840A CN 101270840 A CN101270840 A CN 101270840A CN A2008100530801 A CNA2008100530801 A CN A2008100530801A CN 200810053080 A CN200810053080 A CN 200810053080A CN 101270840 A CN101270840 A CN 101270840A
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Abstract
The invention relates to a non-welded assembly type of fire sprinkler metal hose and a manufacturing method. The middle of the hose is the corrugated segment; both ends of the hose are straight pipe segments; the end of the straight pipe segment is shaped into a 37 degrees cone surface; the external part of the straight pipe segment is sleeved with a nut; the 37 degrees cone surface at the end of the straight pipe segment is consistent with the 37 degrees cone surface of the nut; the spherical surfaces are mounted at the internal and external screw joints, which are screwed into the nuts to form the line contact and the sealing effect. The invention has the beneficial effects that the metal hose has the shock resistant performance which suits for the application in high frequency and low amplitude situations; the melting heat treatment improves the anti-corrosion capacity and suits for the situations with high chloride concentration; the union connection can be processed into various standard nuts which are in flexible connection with the customer pipeline; the flexible connection way and the easy on-site pipeline layout improve the working efficiency; the materials of the internal and external screw joints can be replaced arbitrarily, which saves the cost and suits for the situations below 1.6MPa; and the soft net and the internal and external rings are removed to further decrease the manufacturing cost.
Description
Technical field
The invention belongs to a kind of various water, feed channel inipple and preparation method thereof, especially relate to a kind of non-welding fabrication type fire-fighting spraying metal flexible pipe and making method.
Background technique
As everyone knows, flexible and efficient pipeline construction, solve displacement that a variety of causes of pipeline causes, solve various requirement such as Corrosion of Pipeline and improve constantly.Therefore, be suitable in the also continuous again innovation of product and development of various pipelines connections.The various joints that flexibly connect continue to bring out market, the modal flexible pipe that various nonmetallic material such as tetrafluoro flexible pipe, plastic-aluminum pipe, rubber pipe are arranged.But they all have deadly defect separately, wherein: and the material price costliness of tetrafluoro flexible pipe, cost height, generally speaking, can only use the environment below 180 degree Celsius; Easy to crack and do not have ductility when the plastic-aluminum canal curvature is big, at high temperature to use, its life-span significantly shortens; And rubber pipe is easily aging, particularly under the high temperature and the environment at open-air sunshine, its life-span significantly shortens, under some particular environment, as the casting machine of steel mill, the cooling system of ladle furnace, because its Environmental Conditions is extremely abominable, the high temperature splashes such as slag that the flexible pipe of nonmetallic material is very likely splashed scald and leak, and cause cooling system failure; And need requirement corrosion-resistant reliably, long service life for people, a lot of producers all adopt welding manner, though can realize the metallic seal Placement, but needing the high occasion of corrosion resistance, can only use all steel pipe fitting to weld, increased manufacture cost, under some particular environment, the weld bond place is vulnerable to corrosion and reveals; Simultaneously, because cold working and welding, and without melting heat treated flexible pipe admittedly, in the higher fluid pipeline of chloride ion content, reveal and very easily produce spot corrosion.
Also have, long-time bearing 1.6Mpa hydraulic pressure in the self-extinguishing spray system lateral of in the public building furred ceiling, installing, and contain in the tap water than high chloride ion, common pipe is produced corrosion, shorten pipeline life; Also have when building appearance malformation in various degree, rigidly connected pipeline can produce different Buckling stresses or flexural stress, because of being full of the water of certain pressure in the spray piping, its installing space is narrow and small, and this stress surpasses certain limit, gently then makes the furred ceiling distortion, heavy then pipeline takes place reveal, make troubles to the later maintenance maintenance, when serious, can cause bigger economic loss.
Summary of the invention
The objective of the invention is to overcome above-mentioned defective, a kind of non-welding fabrication type fire-fighting spraying metal flexible pipe and making method are provided, it is corrosion-resistant, ductility good, simple installation, efficiency of construction height.
The present invention is achieved by the following technical solutions: a kind of non-welding fabrication type fire-fighting spraying metal flexible pipe, comprise the stainless steel metal bellows, it is characterized in that: the stainless steel metal bellows comprises that crest and trough replace the bellows segment of moulding mutually, two ends of bellows segment have a straight length respectively, this straight length is isometrical with last trough of bellows segment substantially, and be extended formation, the port of this straight length is 37 ° of conical surface shapes, straight length outer cover loading nut, the 37 ° of conical surface shapes in the port of straight length and 37 ° of conical surfaces of nut match, in, male connection is provided with spherical shape, and it is screwed into nut, its sphere contacts with 37 ° of conical surfaces of nut just, form astragal contact, thereby reach sealing, the jointing side of female adapter and spraying head, it is longer to be processed as length, and offers several grooves in its periphery.
Described stainless steel metal bellows is a C shape bellows.
The soft net of cylindrical metal that described stainless steel metal bellows overcoat is woven into by wire.
The soft net of described metal is the soft net of stainless steel metal.
Ring in the suit one of described stainless steel metal bellows straight length bottom, outer shroud is sleeved on outside the interior ring, and is in ring and the outer shroud, locked fixing by interior ring and the soft net radial direction pressurization of outer hoop in the end of the soft net of metal embeds.
Described stainless steel metal bellows adopts SUS304 or SUS316L stainless steel material.
Described stainless steel metal bellows is latus rectum 20mm, 25mm, random lengths.
The making method of above-mentioned non-welding fabrication type fire-fighting spraying metal flexible pipe is characterized in that: it may further comprise the steps:
(1), the stainless steel sheet material is become hollow tube-shape stainless steel straight tube through welding of longitudinal seam, as pipe;
(2), the stainless steel straight tube takes roll extrusion continuously shaped for stainless steel C shape bellows, press the certain-length cut-out, and two ends are cold worked into the straight length isometrical with last trough;
(3), through the 950-1100 degree, 13-15 minute, the solid melting heat of 450 rev/mins of high temperature of rotating speed was handled;
(4), the cooling 20-30 minute, make temperature by the 950-1100 degree reduce to 60 the degree below;
(5), be inserted in interior ring, be installed on the straight length bottom, be inserted in soft net of metal and outer shroud more successively, adopt the mechanical compaction mode at straight length, the soft net of metal is locked fixing to soft net internal diameter direction by interior ring and outer shroud;
(6), cut out and to remove the soft net of two ends excess metal, be inserted in 37 ° of conic nut;
(7), adopt mechanical stitch enlarging mode, a part of straight length of stainless steel metal bellows is processed into 37 ° conical surface shape; 37 ° of conical surfaces of 37 ° of conical surface shapes of straight length and nut match;
(8), the internal and external screw thread joint is processed into spherical shape, and it is screwed into nut, its sphere contacts with 37 ° of conical surfaces of nut just, form astragal contact, thereby reach sealing, the jointing side of female adapter and spraying head, it is long slightly to be processed as length, and offers several grooves in its periphery.
The invention has the beneficial effects as follows:
1, owing to the non-welded structure of employing, well solved because the localized heat that welds Stainless Steel Flexible Hose and the generation of stainless steel soft net influences, thereby to the corrosion resistance of product and the adverse effect of vibration strength generation.Therefore, be adapted at using under the vibrations occasion of some typical high frequency low-amplitudes, as: the connection of outlet such as water pump, air compressor.
2, because flange-connection stainless steel metal flexible pipe has passed through after solid melting heat handles, make its metal structure return to the austenitic state before the processing, can effectively improve the anti-corrosion capacity of himself, be particularly suitable for using in the higher occasion of chlorine ion concentration.
3, owing to adopt the connection pattern of union, the thread standard of the internal and external screw thread joint that is connected with client's pipeline can be processed into the screw thread of various standards, as: canalis spinalis screw thread made in Great Britain, american standard screw thread etc. are connected with client's pipeline flexibly.
4, owing to adopted the mode that is flexible coupling of flange-connection stainless steel metal flexible pipe, allow the on-the-spot pipe arrangement of various pipelines become simply, improved working efficiency greatly.
5, owing to adopt metallic hose, can be used as the displacement absorber element of various device, pipeline.
6, owing to the material of internal and external screw thread joint can be changed arbitrarily according to Environmental Conditions, in the serious occasion of flow-induced corrosion, can only the internal and external screw thread joint be changed to stainless steel, and nut still uses the straight carbon steel material, both realize all steel connection, saved cost again.
7, lower at pressure, during as the following applications of 1Mpa, can remove soft net and inner and outer rings, further reduce manufacture cost, for the client provides high-quality, the cheap joint that is flexible coupling.
8, C shape bellows has high voltage bearing characteristics, and has certain ductility, and feed consumption is few, low cost of manufacture.
Description of drawings
Accompanying drawing 1 is the embodiments of the invention structural representations.
Among the figure: 1, male connection, 2, nut, 3, outer shroud, 4, interior ring, 5, the stainless steel metal bellows, 6, the soft net of stainless steel metal, 7, female adapter.
Embodiment
Below in conjunction with embodiment a kind of non-welding fabrication type fire-fighting spraying metal flexible pipe of the present invention and making method are elaborated.
With example the structure of non-welding fabrication type fire-fighting spraying metal flexible pipe of the present invention once is described below, please refer to the explanatory drawing of appended drawing: Fig. 1 for the major component of the non-welding fabrication type fire-fighting spraying metal flexible pipe of example 1, constituting of the non-welding fabrication type fire-fighting spraying metal bellows 5 of this example 1 comprises that crest and trough replace the formed C-shaped bellows segment mutually, the end of bellows segment has a straight length, this straight length is isometrical with last trough of bellows segment substantially, and be extended formation, the port of this straight length is 37 ° of conical surface shapes, straight length outer cover loading nut 2,37 ° of conical surfaces of 37 ° of conical surface shapes in the port of straight length and nut 2 match, the spray jointing that has internal thread, male connection 7,1 is provided with the spherical shape of certain size, it is screwed into nut 2, its sphere contacts with 37 ° of stainless steel conical surfaces that process just, form astragal contact, thereby reach sealing; Wherein, the jointing side of female adapter and spraying head, design length is longer, process several grooves 8, be used with the installation jig of special use, can be fixed in the paying on the keel of building furred ceiling easily, groove is used to adjust its position up and down, so that it is neat to make spraying head expose the height of furred ceiling.
At pressure during greater than the above applications of 1Mpa, at stainless steel metal bellows 5 overcoats by the soft net 6 of cylindric stainless steel metal that wire is woven into, the axial elongation distortion that prevents the stainless steel metal bellows owing to bear internal pressure; And protect the stainless steel metal bellows to a certain extent; Straight length bottom suit one interior ring 4, outer shroud 3 is sleeved on bellows segment and straight length joint, and is in ring 4 and the outer shroud 3, locked fixing to the pressurization of net radial direction in the end of the soft net 6 of stainless steel metal embeds.
Described stainless steel metal bellows adopts SUS304 or SUS316L stainless steel material.
Described stainless steel metal bellows can be made latus rectum 20mm, 25mm, random lengths.
Above-mentioned non-welding fabrication type fire-fighting spraying metal flexible pipe making method is,
(1), the stainless steel sheet material is become hollow tube-shape stainless steel straight tube through welding of longitudinal seam, as pipe;
(2), the stainless steel straight tube takes roll extrusion continuously shaped for stainless steel C shape metal bellows, press the certain-length cut-out, and two ends are cold worked into the straight length isometrical with last trough;
(3), spend 15 minutes time, the solid melting heat processing of 450 rev/mins of high temperature of rotating speed through 1000;
(4), the cooling 25 minutes, make temperature by 1000 the degree reduce to 50 the degree;
(5), be inserted in interior ring, be installed on the straight length bottom, be inserted in soft net of stainless steel metal and outer shroud more successively, adopt the mechanical compaction mode at straight length, the soft net of stainless steel metal is locked fixing to soft net internal diameter direction by interior ring and outer shroud;
(6), cut out and to remove the soft net of the unnecessary stainless steel metal in two ends, be inserted in 37 ° of conic nut;
(7), adopt mechanical stitch enlarging mode, a part of straight length of stainless steel metal bellows is processed into 37 ° conical surface shape; 37 ° of conical surfaces of 37 ° of conical surface shapes of straight length and nut match;
(8), the internal and external screw thread joint is processed into spherical shape, inipple is screwed into nut, its sphere contacts with 37 ° of conical surfaces of nut just, form astragal contact, thereby reach sealing, internal thread connects to having the spray jointing of internal thread, the jointing side of it and spraying head, design length is longer, process several grooves 8, be used, can be fixed in the paying on the keel of building furred ceiling easily with the installation jig of special use, groove is used to adjust its position up and down, so that it is neat to make spraying head expose the height of furred ceiling.
Lower at pressure, during as the following applications of 1.6Mpa, remove soft net and inner and outer rings, further reduce manufacture cost, for the client provides high-quality, the cheap joint that is flexible coupling.
Above-mentioned flexible pipe allows working pressure for being no more than 2.5Mpa.
Installation method is: according to the actual conditions of pipeline, select this product of suitable length, when actual pipe distribution operation, earlier 1 cun male connection is backed out, connect with pipeline, nut and male connection are screwed up with a wrench gets final product the root field condition again, suitable crooked bellows, make 1/2 cun tapped spray jointing vertical, this joint is put in the special-purpose U type jig, after the groove of selection proper height and the boss of jig coincide with furred ceiling, itself and pair keel are close to, wedge shaped plate near paying the keel side, is inserted in the U type jig, and is seated, under furred ceiling, accomplish fluently spraying head then, finish installation.
As mentioned above, flange-connection stainless steel metal flexible pipe related to the present invention is not limited to the form of exemplifying embodiment, and the change in the invention basic principle scope of putting down in writing in not breaking away from content of the patent includes in the present invention.
Claims (8)
1, a kind of non-welding fabrication type fire-fighting spraying metal flexible pipe, comprise the stainless steel metal bellows, it is characterized in that: the stainless steel metal bellows comprises that crest and trough replace the bellows segment of moulding mutually, two ends of bellows segment have a straight length respectively, this straight length is isometrical with last trough of bellows segment substantially, and be extended formation, the port of this straight length is 37 ° of conical surface shapes, straight length outer cover loading nut, the 37 ° of conical surface shapes in the port of straight length and 37 ° of conical surfaces of nut match, in, male connection is provided with spherical shape, and it is screwed into nut, its sphere contacts with 37 ° of conical surfaces of nut just, form astragal contact, thereby reach sealing, the jointing side of female adapter and spraying head, it is longer to be processed as length, and offers several grooves in its periphery.
2, a kind of non-welding fabrication type fire-fighting spraying metal flexible pipe according to claim 1 is characterized in that: described stainless steel metal bellows is a C shape bellows.
3, a kind of non-welding fabrication type fire-fighting spraying metal flexible pipe according to claim 1 is characterized in that: the soft net of cylindrical metal that described stainless steel metal bellows overcoat is woven into by wire.
4, a kind of non-welding fabrication type fire-fighting spraying metal flexible pipe according to claim 4 is characterized in that: the soft net of described metal is the soft net of stainless steel metal.
5, a kind of non-welding fabrication type fire-fighting spraying metal flexible pipe according to claim 1, it is characterized in that: ring in the suit one of described stainless steel metal bellows straight length bottom, outside encircling in outer shroud is sleeved on, it is in ring and the outer shroud, locked fixing in the end of the soft net of metal embeds by interior ring and the soft net radial direction pressurization of outer hoop.
6, a kind of non-welding fabrication type fire-fighting spraying metal flexible pipe according to claim 1 is characterized in that: described stainless steel metal bellows adopts SUS304 or SUS316L stainless steel material.
7, a kind of non-welding fabrication type fire-fighting spraying metal flexible pipe according to claim 1 is characterized in that: described stainless steel metal bellows is latus rectum 20mm, 25mm, random lengths.
8, the making method of the described non-welding fabrication type fire-fighting spraying metal flexible pipe of a kind of claim 1, it is characterized in that: it may further comprise the steps:
(1), the stainless steel sheet material is become hollow tube-shape stainless steel straight tube through welding of longitudinal seam, as pipe;
(2), the stainless steel straight tube takes roll extrusion continuously shaped for stainless steel C shape bellows, press the certain-length cut-out, and two ends are cold worked into the straight length isometrical with last trough;
(3), through the 950-1100 degree, 13-15 minute, the solid melting heat of 450 rev/mins of high temperature of rotating speed was handled;
(4), the cooling 20-30 minute, make temperature by the 950-1100 degree reduce to 60 the degree below;
(5), be inserted in interior ring, be installed on the straight length bottom, be inserted in soft net of metal and outer shroud more successively, adopt the mechanical compaction mode at straight length, the soft net of metal is locked fixing to soft net internal diameter direction by interior ring and outer shroud;
(6), cut out and to remove the soft net of two ends excess metal, be inserted in 37 ° of conic nut;
(7), adopt mechanical stitch enlarging mode, a part of straight length of stainless steel metal bellows is processed into 37 ° conical surface shape; 37 ° of conical surfaces of 37 ° of conical surface shapes of straight length and nut match;
(8), the internal and external screw thread joint is processed into spherical shape, the internal and external screw thread joint is screwed into nut, its sphere contacts with 37 ° of conical surfaces of nut just, form astragal contact, thereby reach sealing, the jointing side of female adapter and spraying head, it is long slightly to be processed as length, and offers several grooves in its periphery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100530801A CN101270840A (en) | 2008-05-12 | 2008-05-12 | Non-welding fabrication type fire-fighting spraying metal flexible pipe and production method |
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| CNA2008100530801A CN101270840A (en) | 2008-05-12 | 2008-05-12 | Non-welding fabrication type fire-fighting spraying metal flexible pipe and production method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108468905A (en) * | 2018-05-24 | 2018-08-31 | 海宁市晟达消防设备有限公司 | A kind of nipple for connecting fire fighting device |
| CN110274109A (en) * | 2019-06-28 | 2019-09-24 | 秦皇岛市泰德管业科技有限公司 | A kind of novel spraying metal flexible pipe |
-
2008
- 2008-05-12 CN CNA2008100530801A patent/CN101270840A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108468905A (en) * | 2018-05-24 | 2018-08-31 | 海宁市晟达消防设备有限公司 | A kind of nipple for connecting fire fighting device |
| CN110274109A (en) * | 2019-06-28 | 2019-09-24 | 秦皇岛市泰德管业科技有限公司 | A kind of novel spraying metal flexible pipe |
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Open date: 20080924 |