Self-compensating anti-deformation stainless steel corrugated pipe for gas appliance connection

Abstract

The utility model discloses a self-compensating anti-deformation stainless steel corrugated pipe for gas appliance connection, which comprises a corrugated pipe body and butt joint valve heads mounted at two ends of the corrugated pipe body, and the corrugated pipe body comprises a lining pipe, a metal braid layer and a stainless steel corrugated layer; according to the fuel gas stainless steel corrugated pipe, the metal braid layer serves as a middle layer, the pressure resistance of the fuel gas stainless steel corrugated pipe is improved, the situation of deformation caused by bending extrusion is avoided, in addition, the corrugated stainless steel corrugated layer can be stretched or shrunk according to use requirements, and therefore the fuel gas stainless steel corrugated pipe is convenient to use. The length self-compensation effect of the fuel gas stainless steel corrugated pipe is improved when the fuel gas stainless steel corrugated pipe is used, meanwhile, the butt joint sealing gasket and the anti-leakage sealing ring are adopted, the sealing performance of the butt joint end of the fuel gas stainless steel corrugated pipe is improved, the phenomenon of fuel gas leakage caused by dislocation butt joint is avoided, and the using safety of the fuel gas stainless steel corrugated pipe is guaranteed.

Description

Technical Field

[0001] The utility model belongs to the technical field of gas appliances, and in particular relates to a stainless steel bellows for connecting self-compensating and anti-deformation gas appliances. Background Art

[0002] Gas stainless steel bellows is a piping component widely used in gas transmission systems. Its excellent corrosion resistance, high temperature resistance, and flexibility ensure safe and stable gas delivery. Gas stainless steel bellows are corrugated stainless steel pipes used in gas transmission systems. They typically consist of a stainless steel bellows layer, an inner lining layer (such as polyethylene), and an outer covering layer (such as PVC or other weather-resistant plastic). This unique design ensures strength and corrosion resistance while also enhancing flexibility and adaptability.

[0003] In the prior art, for example, a Chinese utility model patent (application number 201620712138.9) discloses a stainless steel gas bellows structure comprising a stainless steel bellows with an outer diameter φ ranging from 12 to 20 mm, a wave pitch D ranging from 3.2 to 4.2 mm, and a thickness H ranging from 0.22 to 0.32 mm. The outer ring of the stainless steel bellows is sheathed with a plastic sleeve, the inner surface of which is provided with a plurality of axial ventilation grooves. By varying the wave pitch of the stainless steel bellows, the bending performance of the stainless steel bellows is significantly improved, making it less prone to cracking during use and reducing the probability of gas leakage due to bending fatigue.

[0004] However, the gas bellows disclosed in the above-mentioned prior art still has some defects. Specifically, the above-mentioned gas stainless steel bellows is prone to deformation due to bending and extrusion, and the surface of the stainless steel bellows is easily deformed. In addition, when the gas stainless steel bellows are used for docking, uneven docking is prone to occur, resulting in gas leakage, and lack of sealing effect, resulting in certain safety hazards of the gas stainless steel bellows after use. Utility Model Content

[0005] The purpose of the utility model is to provide a self-compensating and anti-deformation stainless steel bellows for connecting gas appliances, aiming to solve the problem that the above-mentioned gas stainless steel bellows are easily deformed due to bending and extrusion, and the phenomenon that uneven docking may occur when the gas stainless steel bellows are used for docking, resulting in gas leakage, lack of sealing effect, and certain safety hazards after use of the gas stainless steel bellows.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solution: a self-compensating and anti-deformation stainless steel bellows for connecting gas appliances, comprising a bellows body and butt valve heads mounted at both ends of the bellows body, wherein the bellows body comprises an inner liner, a metal braided layer, and a stainless steel corrugated layer;

[0007] The butt joint surface of the butt joint valve head is connected with a butt joint sealing gasket, the inner wall of the butt joint valve head is provided with a sealing groove, and an anti-leakage sealing ring is installed inside the sealing groove.

[0008] In order to improve the overall effect and toughness, as a self-compensating and anti-deformation stainless steel bellows for connecting gas appliances of the present invention, the inner lining pipe is located at the innermost part of the bellows body, and the inner lining pipe is made of polyethylene.

[0009] In order to improve the pressure resistance effect, as a preferred embodiment of the utility model of a self-compensating and anti-deformation stainless steel bellows for connecting gas appliances, the metal braided layer is composed of a stainless steel metal mesh.

[0010] In order to ensure the butt seal, the butt valve head is preferably provided with a groove near the butt sealing gasket in the butt valve head as a self-compensating and anti-deformation stainless steel bellows for connecting gas appliances of the present invention, and the butt sealing gasket is adapted to the groove at the butt end of the butt valve head.

[0011] In order to improve the sealing effect, as a preferred embodiment of the utility model of a self-compensating and anti-deformation stainless steel bellows for connecting gas appliances, the anti-leakage sealing ring is made of silicone material, and the cross-section of the anti-leakage sealing ring is T-shaped.

[0012] In order to facilitate the assembly of the anti-leakage sealing ring, as a preferred embodiment of the present invention, a stainless steel bellows for connecting a self-compensating and anti-deformation gas appliance is used, the surface size of the anti-leakage sealing ring is consistent with the inner wall size of the sealing groove.

[0013] In order to ensure that the anti-leakage sealing ring is installed firmly, as a preferred embodiment of the utility model of a stainless steel bellows for connecting a self-compensating and anti-deformation gas appliance, the cross section of the sealing groove is T-shaped.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] The utility model adopts a metal braided layer as an intermediate layer, thereby improving the pressure resistance of the gas stainless steel bellows and avoiding deformation due to bending and extrusion. In addition, the corrugated stainless steel corrugated layer can be stretched or contracted according to the needs of use, thereby improving the self-compensation effect of the length of the gas stainless steel bellows during use. At the same time, the butt sealing gasket and the anti-leakage sealing ring are adopted to improve the sealing of the butt end of the gas stainless steel bellows, avoid gas leakage due to misaligned docking, and ensure the safety of the gas stainless steel bellows. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0017] Figure 1 This is a schematic diagram of the overall assembly structure of a gas bellows stainless steel bellows for connecting self-compensating and anti-deformation gas appliances.

[0018] Figure 2 This is a schematic diagram of the butt sealing gasket connection structure for stainless steel bellows used to connect self-compensating and anti-deformation gas appliances.

[0019] Figure 3 This is a schematic diagram of the cross-sectional structure of the butt valve head of a stainless steel bellows used to connect self-compensating and anti-deformation gas appliances.

[0020] Figure 4 This is a schematic diagram of the exploded structure of the leak-proof sealing ring of the stainless steel bellows used to connect self-compensating and anti-deformation gas appliances.

[0021] Figure 5 This is a schematic diagram of the structure of a gas bellows that is a stainless steel bellows used to connect self-compensating and anti-deformation gas appliances.

[0022] In the figure: 1. Bellows body; 101. Lining pipe; 102. Metal braided layer; 103. Stainless steel corrugated layer; 2. Butt valve head; 3. Butt sealing gasket; 4. Anti-leakage sealing ring; 5. Sealing groove. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0024] See also Figure 1-5 The utility model provides the following technical solutions: a self-compensating and anti-deformation stainless steel bellows for connecting gas appliances, comprising a bellows body 1 and a butt valve head 2 installed at both ends of the bellows body 1, wherein the bellows body 1 comprises an inner liner 101, a metal braided layer 102, and a stainless steel corrugated layer 103;

[0025] A docking sealing gasket 3 is connected to the docking surface of the docking valve head 2 , a sealing groove 5 is opened on the inner wall of the docking valve head 2 , and an anti-leakage sealing ring 4 is installed inside the sealing groove 5 .

[0026] Preferably, the inner lining tube 101 is located at the innermost part of the corrugated tube body 1 and is made of polyethylene.

[0027] In specific use, by adopting the inner lining pipe 101 made of polyethylene, the bending toughness and service life of the gas stainless steel bellows are improved;

[0028] Preferably, the metal braided layer 102 is made of a stainless steel mesh.

[0029] During specific use, the use of the metal braided layer 102 can conveniently improve the pressure resistance and overall strength of the gas stainless steel bellows, thereby avoiding deformation due to extrusion and affecting the normal transmission of gas.

[0030] Preferably, a groove is provided on the butt joint valve head 2 near the butt joint sealing gasket 3 , and the butt joint sealing gasket 3 is matched with the groove on the butt joint end of the butt joint valve head 2 .

[0031] During specific use, by adopting the sealing gasket 3, the butt end of the gas stainless steel bellows can be sealed at the first level, thereby improving the safety of the gas stainless steel bellows.

[0032] Preferably, the anti-leakage sealing ring 4 is made of silicone material, and the cross section of the anti-leakage sealing ring 4 is T-shaped.

[0033] During specific use, the use of the anti-leakage sealing ring 4 facilitates secondary guarantee of the sealing performance of the docking valve head 2 to avoid gas leakage.

[0034] Preferably, the surface size of the anti-leakage sealing ring 4 matches the inner wall size of the sealing groove 5 .

[0035] During specific use, the anti-leakage sealing ring 4 is installed inside the sealing groove 5, which makes it convenient to assemble and replace the anti-leakage sealing ring 4.

[0036] Preferably, the cross section of the sealing groove 5 is T-shaped.

[0037] During specific use, the T-shaped sealing groove 5 is adopted to facilitate the stable installation of the anti-leakage sealing ring 4, avoid the occurrence of the wire falling off during installation, and improve the sealing performance of the gas stainless steel bellows.

[0038] The working principle of the present invention during specific use: first, by adopting the metal braided layer 102 as the middle layer, the pressure resistance of the gas stainless steel bellows is improved by the stainless steel metal mesh material, avoiding deformation during bending and extrusion. In addition, the corrugated stainless steel corrugated layer 103 can be stretched or shrunk according to the needs of use, thereby improving the self-compensation effect of the length of the gas stainless steel bellows during use. At the same time, the docking sealing gasket 3 is installed at the docking end of the docking valve head 2, and the anti-leakage sealing ring 4 is embedded in the sealing groove 5 inside the docking valve head 2, thereby improving the sealing of the docking end of the gas stainless steel bellows, avoiding gas leakage due to misaligned docking, and ensuring the safety of the use of the gas stainless steel bellows.

[0039] Finally, it should be noted that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein with equivalents. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A self-compensating, anti-deformation stainless steel bellows for connecting gas appliances, comprising a bellows body (1) and butt valve heads (2) mounted at both ends of the bellows body (1), characterized in that: The bellows body (1) comprises an inner lining tube (101), a metal braided layer (102) and a stainless steel corrugated layer (103); The butt joint surface of the butt joint valve head (2) is connected to a butt joint sealing gasket (3), the inner wall of the butt joint valve head (2) is provided with a sealing groove (5), and an anti-leakage sealing ring (4) is installed inside the sealing groove (5).

2. The self-compensating and anti-deformation stainless steel bellows for connecting gas appliances according to claim 1, characterized in that: The inner lining tube (101) is located at the innermost part of the corrugated tube body (1), and the inner lining tube (101) is made of polyethylene.

3. The self-compensating and anti-deformation stainless steel bellows for connecting gas appliances according to claim 1, characterized in that: The metal braided layer (102) is made of stainless steel metal mesh.

4. The self-compensating and anti-deformation stainless steel bellows for connecting gas appliances according to claim 1, characterized in that: The butt joint valve head (2) is provided with a groove near the butt joint sealing gasket (3), and the butt joint sealing gasket (3) is adapted to the groove at the butt joint end of the butt joint valve head (2).

5. The self-compensating and anti-deformation stainless steel bellows for connecting gas appliances according to claim 1, characterized in that: The anti-leakage sealing ring (4) is made of silicone material, and the cross section of the anti-leakage sealing ring (4) is T-shaped.

6. The self-compensating and anti-deformation stainless steel bellows for connecting gas appliances according to claim 1, characterized in that: The surface size of the anti-leakage sealing ring (4) matches the inner wall size of the sealing groove (5).

7. The self-compensating and anti-deformation stainless steel bellows for connecting gas appliances according to claim 1, characterized in that: The sealing groove (5) has a T-shaped cross section.

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