CN210106775U - Stainless steel corrugated pipe with threaded connector for gas appliance - Google Patents
Stainless steel corrugated pipe with threaded connector for gas appliance Download PDFInfo
- Publication number
- CN210106775U CN210106775U CN201920415944.3U CN201920415944U CN210106775U CN 210106775 U CN210106775 U CN 210106775U CN 201920415944 U CN201920415944 U CN 201920415944U CN 210106775 U CN210106775 U CN 210106775U
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- stainless steel
- flange
- corrugated
- necking
- nut
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Abstract
The utility model relates to a gas utensil connecting pipe technical field specifically, relates to a gas utensil is with nonrust corrugated steel pipe with hickey, adopts the throat flange of metal material to hold tightly corrugated steel pipe's coating layer, and the field installation need not to be equipped with welding tool, reduces the field installation cost, has removed the safety risk that needs the welding operation when the field installation: the shrunk necking flange has high rigidity and cannot be distorted and deformed when the holding force is large, and the defect of tightness check of the elastic material reinforced ring in the traditional structure is overcome; the tool withdrawal groove is formed in the nut in a machining mode, the flat gasket sealing ring is installed in the tool withdrawal groove, the joint of the gas pipeline and the nut can be tightly pressed to form the flat gasket sealing ring when in threaded connection, and the sealing performance is high.
Description
Technical Field
The utility model relates to a gas utensil connecting pipe technical field specifically, relates to a stainless steel corrugated pipe for gas utensil with hickey.
Background
The stainless steel corrugated pipe is widely used in connection of a gas appliance and a gas pipeline, and generally comprises a corrugated pipe inner pipe, a rubber sleeve and a joint body, wherein the rubber sleeve is wrapped outside the corrugated pipe inner pipe and used for protecting the corrugated pipe inner pipe, and the joint body is arranged at the end part of the corrugated pipe inner pipe.
In the survival and manufacture of the stainless steel corrugated pipe, the installation of the joint body is the most critical, and the installation form of the joint body directly influences the sealing performance of the stainless steel corrugated pipe in a use state. The joint connection form of the stainless steel corrugated pipe comprises a plug-in interface and a threaded interface. The threaded interface is sealed through threaded connection between the nut and the connected pipeline, and leakage is easy to generate if the threaded connection is loosened.
SUMMERY OF THE UTILITY MODEL
The utility model provides a gas apparatus is with stainless steel bellows with hickey to prior art not enough.
The utility model discloses a stainless steel corrugated pipe with a screwed joint for gas appliances, which comprises a stainless steel corrugated pipe, a coating layer and a nut, wherein the coating layer and the nut are coated outside the stainless steel corrugated pipe, the nut is sleeved at the end part of the stainless steel corrugated pipe, at least one complete wave trough is exposed outside the coating layer at the end part of the stainless steel corrugated pipe, the exposed part of the stainless steel corrugated pipe is sleeved with a necking flange which is tightly sleeved with the coating layer, the necking flange is made of metal material, the outer side of one end of the necking flange, which is far away from the coating layer, is provided with an outwardly protruded flange edge, the inner side of the necking flange is provided with an inner snap ring embedded into the wave trough of the stainless steel corrugated pipe at the position corresponding to the flange edge, the end part of one side of the necking flange, which is provided with the flange edge, the stainless steel corrugated pipe exposed outside the necking flange is pressed in the ring groove after, the diameter of the tail hole of the nut is smaller than that of the flange edge of the necking flange, a tool withdrawal groove is formed in the root of the thread in the nut in a machining mode, and a flat gasket sealing ring is installed in the tool withdrawal groove.
Preferably, a gap is arranged between the outer wall of the flat gasket sealing ring and the tool withdrawal groove.
Preferably, the outer diameter of the flat gasket seal ring is smaller than the small thread diameter of the nut.
Preferably, the outer wall of the flat gasket sealing ring is provided with a round angle.
Preferably, the outer diameter of the flat gasket seal ring is larger than the diameter of the flange edge of the necking flange.
Preferably, the exposed part of the stainless steel corrugated pipe comprises at least two complete wave crests, two ends of the exposed part respectively comprise half wave troughs, and the inner snap ring is embedded into one complete wave trough which is closest to the coating layer on the exposed part of the stainless steel corrugated pipe.
Preferably, the thickness of the stainless steel corrugated pipe exposed outside the necking flange after being flattened is larger than the depth of the annular groove.
Has the advantages that: the utility model discloses a coating layer of tight corrugated stainless steel pipe is embraced to throat flange of metal material, the interior snap ring of throat flange after the throat imbeds in the trough of the corrugated stainless steel pipe who exposes, in impressing the ring channel of throat flange front end after flattening through the exposed corrugated stainless steel pipe that will remain, realize the sealing between throat flange and the corrugated stainless steel pipe through the mode that compresses tightly bayonet seal cover after fixation nut and the rotatory locking of swivel nut, machine-shaping tool withdrawal groove in the nut, at the tool withdrawal inslot installation flat gasket sealing washer, gas pipeline's joint can compress tightly the flat gasket sealing washer when carrying out threaded connection with the nut, the leakproofness is strong.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:
fig. 1 is a schematic sectional structure view of a middle necking flange of the present invention;
FIG. 2 is a schematic view of a process flow for installing a reducing flange;
FIG. 3 is a schematic sectional view of the present invention;
description of reference numerals: the sealing structure comprises a stainless steel corrugated pipe 1, a coating layer 2, a nut 3, a tool withdrawal groove 3a, a necking flange 4, a flange edge 4a, an inner snap ring 4b, an annular groove 4c and a flat gasket sealing ring 5.
Detailed Description
In the following description, numerous implementation details are set forth in order to provide a more thorough understanding of the present invention. It should be understood, however, that these implementation details should not be used to limit the invention. That is, in some embodiments of the invention, details of these implementations are not necessary. In addition, some conventional structures and components are shown in simplified schematic form in the drawings.
In addition, the descriptions related to "first", "second", etc. in the present invention are only for description purposes, not specifically referring to the order or sequence, and are not intended to limit the present invention, but only to distinguish the components or operations described in the same technical terms, and are not to be construed as indicating or implying any relative importance or implicit indication of the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.
Fig. 1 shows the utility model discloses well throat flange 4's cross-sectional view, this throat flange 4 adopt the metal material that extensibility can be good, can not produce the phenomenon of fracture when the compression, and rigidity after the compression can reach the assurance. As shown in fig. 1, the left end of the throat flange 4 is extended with a flange 4a, the inner side of the throat flange 4 is provided with an inner snap ring 4b at a position corresponding to the flange 4a, and an annular groove 4c is provided at the end of the throat flange 4 on the side having the flange 4 a. The left side of the necking method is a tubular structure which is used for holding the coating layer 2 outside the stainless steel corrugated pipe 11 at a compression port.
As shown in fig. 2, the installation of the necking flange 4 comprises the following four steps:
step 1, peeling off the coating layer 2 with proper length, wherein three complete wave troughs are exposed after peeling off.
The size requirement of the necking flange 4 is as follows: a gap of 0.05-0.1 mm is left at one side between the inner diameter of the inner snap ring 4b and the outer diameter of the stainless steel corrugated pipe 1. So as to ensure that the necking flange 4 can be smoothly sleeved outside the coating layer 2 before compression and the inner snap ring 4b can not be blocked by the wave trough of the stainless steel corrugated pipe 1, and in addition, the inner snap ring 4b can be ensured to be embedded into the wave trough after the necking flange 4 is compressed. Because the necking flange 4 is made of metal, the size reduction amount after compression is smaller.
And 3, compressing the outline dimension of the necking flange 4 by adopting a necking die or a necking tool. After compression, the tubular part of the reducing flange 4 is held tightly with the coating 2, while the bottom of the inner ring is embedded into the wave trough of the corrugated stainless steel pipe 1. The necking flange 4 is made of metal with good extensibility, so that cracking cannot occur during compression, and the rigidity after compression can be guaranteed.
And 4, flattening the stainless steel corrugated pipe 1 remained outside the necking flange 4, wherein the flattened part of the stainless steel corrugated pipe 1 is pressed into the annular groove 4c of the necking flange 4. The depth of the annular groove 4c is at least smaller than the thickness of the two complete wave peaks, so that the thickness of the two wave peaks after being leveled is higher than that of the annular groove 4c, and further, after the fixing nut 3 and the rotating nut 3 are locked, the inserted sealing sleeve can compress the leveling part.
Referring to fig. 1 to 3, a stainless steel corrugated pipe 1 for a gas appliance with a threaded connector comprises a stainless steel corrugated pipe 1, a coating layer 2 coated outside the stainless steel corrugated pipe 1, and a nut 3, wherein the nut 3 is sleeved at an end of the stainless steel corrugated pipe 1, at least one complete wave trough of the end of the stainless steel corrugated pipe 1 is exposed outside the coating layer 2, a necking flange 4 tightly sleeved with the coating layer 2 is sleeved at an exposed part of the stainless steel corrugated pipe 1, the necking flange 4 is made of a metal material, an outwardly protruding flange edge 4a is arranged at an outer side of one end of the necking flange 4 far away from the coating layer 2, an inner snap ring 4b embedded into the wave trough of the stainless steel corrugated pipe is arranged at a position corresponding to the flange edge 4a on the inner side of the necking flange 4, an annular groove 4c is arranged at an end of one side of the necking flange 4 having the flange edge 4a, the stainless steel corrugated pipe 1 exposed outside the necking flange 4 is pressed in the annular groove, the tail hole of the nut 3 is in sliding fit with the outer wall of the necking flange 4, the diameter of the tail hole of the nut 3 is smaller than that of the flange edge 4a of the necking flange 4, a tool withdrawal groove 3a is formed in the root of the thread in the nut 3 in a machining mode, and a flat gasket sealing ring 5 is installed in the tool withdrawal groove 3 a.
A gap is arranged between the outer wall of the flat gasket sealing ring 5 and the tool withdrawal groove 3 a. A gap is reserved between the tool withdrawal groove 3a and the flat gasket sealing ring 5, so that the flat gasket sealing ring 5 can conveniently rotate along with the tightening force when being installed.
The outer diameter of the flat gasket seal ring 5 is smaller than the small diameter of the thread of the nut 3. To prevent the flat gasket 5 from being separated from the nut 3, since the flat gasket 5 is a rubber member, the flat gasket 5 can be fitted into the relief groove 3a by pressing.
The outer wall of the flat gasket sealing ring 5 is provided with a fillet. The fillet design facilitates the installation of the flat gasket seal ring 5, as the right-angled edges will cause a jam on the threads of the nut 3 during installation.
The outer diameter of the flat gasket seal ring 5 is larger than the diameter of the flange edge 4a of the necking flange 4. The diameter of the flat gasket sealing ring 5 is larger than that of the flange edge 4a, and when the flat gasket sealing ring 5 is extruded and deformed, the whole end face of the flange edge 4a can be completely covered, so that the sealing effect is better.
The exposed part of the stainless steel corrugated pipe 1 comprises at least two complete wave crests, two ends of the exposed part respectively comprise half wave troughs, and the inner snap ring 4b is embedded into the complete wave trough which is closest to the coating layer 2 on the exposed part of the stainless steel corrugated pipe 1.
The thickness of the stainless steel corrugated pipe 1 exposed outside the necking flange 4 after being flattened is larger than the depth of the annular groove 4 c.
The above description is only an embodiment of the present invention, and is not intended to limit the present invention. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.
Claims (7)
1. The utility model provides a gas is nonrust corrugated steel pipe (1) for apparatus with hickey, includes corrugated steel pipe (1), cladding at outside coated layer (2) of corrugated stainless steel pipe (1) and nut (3), and the tip at corrugated steel pipe (1) is established in nut (3) cover, its characterized in that: the end part of the stainless steel corrugated pipe (1) is provided with at least one complete wave trough which is exposed outside the coating layer (2), the exposed part of the stainless steel corrugated pipe (1) is sleeved with a necking flange (4) which is tightly sleeved with the coating layer (2), the necking flange (4) is made of metal material, the outer side of one end of the necking flange (4) far away from the coating layer (2) is provided with a flange edge (4a) which protrudes outwards, the inner side of the necking flange (4) and the position of the flange edge (4a) are provided with inner snap rings (4b) which are embedded into the wave trough of the stainless steel, the end part of one side of the necking flange (4) provided with the flange edge (4a) is provided with an annular groove (4c), the stainless steel corrugated pipe (1) exposed outside the necking flange (4) is pressed in the annular groove (4c) after being flattened, and the tail hole of the nut (3) is in sliding fit with the outer wall of the necking, the diameter of a tail hole of the nut (3) is smaller than that of a flange edge (4a) of the necking flange (4), a tool withdrawal groove (3a) is formed in the root of the thread in the nut (3) in a machining mode, and a flat gasket sealing ring (5) is installed in the groove of the tool withdrawal groove (3 a).
2. A stainless steel bellows (1) for gas appliances with threaded interface according to claim 1, characterized in that: a gap is arranged between the outer wall of the flat gasket sealing ring (5) and the tool withdrawal groove (3 a).
3. A corrugated stainless steel pipe (1) for gas appliances with threaded interface according to claim 2, characterized in that: the outer diameter of the flat gasket sealing ring (5) is smaller than the small diameter of the thread of the nut (3).
4. A corrugated stainless steel pipe (1) for gas appliances with threaded interface according to claim 3, characterized in that: the outer wall of the flat gasket sealing ring (5) is provided with a fillet.
5. A corrugated stainless steel pipe (1) for gas appliances with threaded interface according to claim 4, characterized in that: the outer diameter of the flat gasket sealing ring (5) is larger than the diameter of a flange edge (4a) of the necking flange (4).
6. A corrugated stainless steel pipe (1) for gas appliances with threaded interface according to any one of claims 1 to 5, characterized in that: the exposed part of the stainless steel corrugated pipe (1) comprises at least two complete wave crests, the two ends of the exposed part respectively comprise half wave troughs, and the inner snap ring (4b) is embedded into the complete wave trough which is closest to the coating layer (2) on the exposed part of the stainless steel corrugated pipe (1).
7. A corrugated stainless steel pipe (1) for gas appliances with threaded interface according to claim 6, characterized in that: the thickness of the stainless steel corrugated pipe (1) exposed outside the necking flange (4) after being punched is larger than the depth of the annular groove (4 c).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920415944.3U CN210106775U (en) | 2019-03-29 | 2019-03-29 | Stainless steel corrugated pipe with threaded connector for gas appliance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920415944.3U CN210106775U (en) | 2019-03-29 | 2019-03-29 | Stainless steel corrugated pipe with threaded connector for gas appliance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210106775U true CN210106775U (en) | 2020-02-21 |
Family
ID=69535531
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920415944.3U Expired - Fee Related CN210106775U (en) | 2019-03-29 | 2019-03-29 | Stainless steel corrugated pipe with threaded connector for gas appliance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210106775U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111633403A (en) * | 2020-06-18 | 2020-09-08 | 朋志鹏 | Semi-automatic assembly tool for necking flange of gas corrugated pipe |
-
2019
- 2019-03-29 CN CN201920415944.3U patent/CN210106775U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111633403A (en) * | 2020-06-18 | 2020-09-08 | 朋志鹏 | Semi-automatic assembly tool for necking flange of gas corrugated pipe |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200221 Termination date: 20210329 |
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| CF01 | Termination of patent right due to non-payment of annual fee |