Unlock instant, AI-driven research and patent intelligence for your innovation.

Stainless steel corrugated hose for connecting gas appliance

A technology for gas appliances and corrugated hoses, which is applied to hose connection devices, pipes/pipe joints/fittings, manufacturing tools, etc., can solve problems such as increasing on-site installation safety hazards, loosening of Green joint interfaces, and increasing installation costs. The effect of overcoming the sealing inspection, solving the technical difficulty and reducing the overall cost

Active Publication Date: 2019-07-12
浙江圣字管业股份有限公司
View PDF7 Cites 9 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of this method is: the technical requirements for girth welding are high, and leakage will occur if the girth welding is not up to standard; and welding tools need to be carried during on-site installation, which increases the safety hazards of on-site installation and increases the installation cost
[0006] In addition, the traditional interface structure mostly adopts the in-line structure. After the Green connector is inserted, it relies on the friction force between the plug-in sealing sleeves to keep locked. The connection between the green joint and the stainless steel bellows joint is loose or even separated, resulting in gas leakage

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Stainless steel corrugated hose for connecting gas appliance
  • Stainless steel corrugated hose for connecting gas appliance
  • Stainless steel corrugated hose for connecting gas appliance

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment 1

[0039] Reference Figure 1 to Figure 5 The shown stainless steel bellows with an improved structure includes a stainless steel bellows 1, a plug-in interface and a threaded interface. The plug-in interface and the threaded interface are respectively arranged at both ends of the stainless steel bellows 1. The plug-in interface includes a fixing nut 27 and a screw connection. A rotating nut 2, a reinforced snap ring 3 and a plug-in seal ring 4. The threaded interface includes a second rotating nut 5 and a flat gasket seal ring 6. Both ends of the stainless steel bellows 1 are tightly connected for the first rotating nut 2 and The necked flange 7 sleeved by the second rotating nut 5, the outer side of the stainless steel bellows 1 is wrapped with a coating layer 26 made of soft material, the fixed nut 27 is detachably connected with the first rotating nut 2, and the plug-in seal ring 4 It is located on the inner side of the fixing nut 27 and both ends are respectively pressed again...

specific Embodiment 2

[0054] The difference from the first embodiment is that, in addition to the threaded connection between the upper connecting portion 10 and the lower connecting portion, it can also be connected by such as Figure 5 to Figure 8 The solution shown is realized. Specifically, two arc-shaped sliding grooves 14 inclined upward along the cylindrical wall are symmetrically provided on the outer wall of the upper connecting portion 10, and the upper and lower ends of each arc-shaped sliding groove 14 are respectively provided with vertical downwards. The bottom of the notch 15 is connected to the lower side of the lower connecting portion 9, and the cylindrical wall of the upper connecting portion 10 is embedded with two cylindrical pins 17 slidingly fitted with the arc-shaped sliding groove 14, and a fixing nut 27 and the lower connecting portion 9 are provided with an upwardly extending annular receiving groove 18, the depth of the annular receiving groove 18 is less than the height o...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to the field of gas appliance connecting pipes, in particular to a stainless steel corrugated hose for connecting a gas appliance. The stainless steel corrugated hose comprises astainless steel bellows, a plug-in interface and a threaded interface; the put-in interface comprises a fixing nut, a first rotary nut, a reinforcing snap ring and a put-in seal ring; the threaded interface comprises a second rotary nut and a flat gasket seal ring; both ends of the stainless steel bellows are tightly connected with necking flanges; a coating made of soft materials wraps the stainless steel bellows; a tooling withdrawal groove is arranged on the inner wall of the second rotary nut, so that a safety risk of welding operation during installing on site is eliminated; the neckingflanges after tightening have high stiffness and cannot distort when holding force is large, so that the shortcoming of poor sealing of the elastic reinforcing ring in a traditional structure is overcome; and the use of accessories is reduced without adding a sealing ring near a tail hole of the first rotary nut, so that the comprehensive cost is reduced, and the production efficiency is improved.

Description

Technical field [0001] The invention relates to the field of connecting pipes for gas appliances, in particular to a stainless steel corrugated hose for connecting gas appliances. Background technique [0002] Stainless steel bellows are widely used to connect gas appliances and gas pipelines. Stainless steel bellows are usually composed of three parts: the inner tube of the bellows, the rubber sleeve and the joint body. Among them, the rubber sleeve is wrapped around the outside of the inner tube of the bellows. The inner tube of the tube is protected, and the joint body is arranged at the end of the inner tube of the bellows. [0003] In the survival and manufacturing of stainless steel bellows, the installation of the joint body is the most critical, and the installation form of the joint body directly affects the sealing performance of the stainless steel bellows in use. The joint body usually includes a rotating nut, a fixed nut and a sealing ring. The rotating nut is sleeved...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): F16L33/28F16L33/18F16L33/01F16L33/26B23P11/00
CPCB23P11/00F16L33/01F16L33/18F16L33/26F16L33/28
Inventor 胡熙存张申正
Owner 浙江圣字管业股份有限公司