Stainless steel corrugated hose for connecting gas appliance with rear main valve of gas meter

Abstract

The utility model discloses a stainless steel corrugated hose for connecting a gas appliance with a rear main valve of a gas meter, which is arranged between the gas main valve behind the gas meter and the gas appliance, and a threaded connection cap in rotary pair connection with a hose body is arranged close to one end connected with the gas main valve. Fixing is realized by screwing an internal thread of the threaded connection cap and an external thread at the corresponding end of the gas main valve; the end, connected with the gas main valve, of the pipe body comprises a connecting pipe extending towards the interior of the gas main valve in the axial direction. The outer wall of the connecting pipe comprises a sealing block which is shaped like a head-removed cone; the outer diameter of the sealing block is reduced along with reduction of the distance between the sealing block and the gas main valve, the outer diameter of the minimum position is smaller than the inner diameter of the gas main valve, and the outer diameter of the maximum position is larger than the inner diameter of the gas main valve. According to the utility model, the problem of air leakage in the connection of the traditional hose and the valve is solved, the problem of increasing the inspection amount during security check work is solved, the time and labor cost required by installation are reduced, and the installation efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to gas appliance connection technical field, especially stainless steel corrugated hose for gas appliance and gas meter rear total valve connection. BACKGROUND

[0002] In the gas supply system, the safety and reliable connection between the gas appliance and the gas pipeline is very important, which is directly related to the user's life and property safety and the stability of gas supply. With the increasing popularity of gas use, higher requirements are put forward for the performance and connection mode of the gas appliance connection hose.

[0003] At present, in the field of gas appliance connection, the traditional gas appliance connection hose has obvious disadvantages when connecting with the valve. The traditional connection mode usually needs to use copper external thread joint and copper union to realize the butt joint of the hose and the valve. Although this connection mode can meet the basic connection requirements to a certain extent, it brings many problems.

[0004] From the connection structure, when using copper external thread joint and copper union for connection, multiple pipeline interfaces will be formed between the hose and the valve. Each interface is a potential leakage point, and as the number of interfaces increases, the risk of gas leakage also increases. Gas leakage not only causes waste of energy, but more seriously, once the leaked gas reaches a certain concentration, it is easy to cause explosion, fire and other serious safety accidents when encountering ignition sources such as open flame or electric spark, which poses a great threat to the life and property safety of users.

[0005] From the perspective of safety inspection, the existence of multiple pipeline interfaces means that the security personnel need to check more parts when conducting safety inspection, and the inspection workload increases significantly. This leads to the fact that in actual operation, security personnel need to check the sealing performance and connection firmness of each interface one by one, which not only consumes a lot of time and manpower, but also may cause some interfaces to be missed due to the complexity of the inspection work, resulting in the inability to discover potential safety hazards in time.

[0006] Therefore, how to solve the problem of using copper external thread joint and copper union in the connection of traditional hose and valve, which causes multiple pipeline interfaces between them, thereby increasing the risk of gas leakage and the inspection workload during security inspection, reducing the time and labor cost required for installation, and improving the installation efficiency has become a technical problem that technicians in this field need to solve urgently. INVENTION CONTENTS

[0007] In view of the above defects of the prior art, the utility model provides a stainless steel corrugated hose for connecting a gas appliance and a gas meter rear total valve, which achieves the purpose of.

[0008] In order to achieve the above object, the utility model discloses a stainless steel corrugated hose for gas appliance and gas meter rear total valve connection is set between the gas total valve and gas appliance after the gas meter, is equipped with a thread connection cap of rotary pair connection between the pipe body in the one end close to the gas total valve connection, realizes the fixation through the internal thread of thread connection cap and the external thread of the corresponding one end of gas total valve.

[0009] Among them, the one end of the pipe body and the gas total valve connection includes the connecting pipe that extends to the gas total valve inside along the axial direction;

[0010] The outer wall of the connecting pipe includes a sealing block of headless conical shape;

[0011] The outer diameter of the sealing block decreases with the distance between the gas total valve, and the outer diameter of the minimum is less than the inner diameter of the gas total valve, and the outer diameter of the maximum is greater than the inner diameter of the gas total valve.

[0012] Preferably, the gas appliance is gas stove, gas stove and / or gas water heater.

[0013] Preferably, the pipe body, the outer wall of the one end close to the gas total valve connection is equipped with a circle of outwardly extending outer flange structure;

[0014] The inner hole of the thread connection cap is equipped with a circle of inwardly extending inner flange structure on the side away from the gas total valve corresponding to the outer flange structure, and the rotary pair connection is formed by clamping the inner flange structure on the side away from the gas total valve of the outer flange structure and the pipe body.

[0015] More preferably, a tubular sealing pipe is arranged outside the connecting pipe in the thread connection cap;

[0016] The outer diameter of the sealing pipe is not greater than the small diameter of the internal thread of the thread connection cap, the inner diameter is not less than the maximum outer diameter of the sealing block, and a sealing ring is arranged at the one end towards the gas total valve, and a reset spring is arranged between the one end away from the gas total valve and the inner flange structure.

[0017] More preferably, the outer wall of the sealing ring is provided with an annular fastening spring.

[0018] More preferably, the sealing ring is made of rubber material.

[0019] The utility model has the advantages of:

[0020] The utility model solves the problem that copper outer thread joint and copper friend are needed in the connection of traditional hose and valve, multiple pipeline interfaces appear between the two, thereby increasing the gas leakage risk, and the problem that the inspection amount is increased when security inspection is carried out, the time and manpower cost required for installation are reduced, and the installation efficiency is improved.

[0021] The threaded connection cap can rotate on the surface of the corrugated connection hose, the corrugated connection hose is directly installed at the gas valve interface by the threaded connection of the threaded connection cap and the gas valve, the complicated connection mode in the traditional connection mode is avoided, materials are saved, the connection interface is reduced, the gas leakage risk is reduced, and the number of interfaces that need to be safety checked is also reduced.

[0022] The utility model discloses a reset spring extrusion sealing pipe, the outer surface of connecting pipe is close to the inner wall of gas valve, realizes a certain degree of sealing, then sealing block stops gas valve, blocks the gap between gas valve and connecting pipe, and the sealing between the two is enhanced.

[0023] The utility model discloses a fastening spring elastic force effect makes sealing ring inner wall close to sealing block outer surface, further carries out the sealing between gas valve interface end and sealing pipe.

[0024] The multiple sealing protection mechanism of the utility model prevents gas leakage from different angles and different levels, greatly improves the safety of gas use, effectively avoids the safety accident caused by gas leakage, and guarantees the life and property safety of the user.

[0025] The utility model will be further explained in combination with the attached drawing to the conception, specific structure and the technical effect produced of the utility model, so that the purpose, characteristics and effect of the utility model can be fully understood. DRAWINGS

[0026] Figure 1 The structure schematic diagram of one embodiment of the utility model is shown.

[0027] Figure 2 The structure schematic diagram of the connecting pipe with sealing block in one embodiment of the utility model is shown.

[0028] Figure 3 The structure schematic diagram of the sealing pipe arranged between the threaded connection cap and the connecting pipe in one embodiment of the utility model is shown.

[0029] Figure 4 The sectional structure schematic diagram of the sealing pipe provided with fastening spring in one embodiment of the utility model is shown.

[0030] In the figure: 1, pipe body; 11, outer convex flange structure; 2, threaded connection cap; 21, inner convex flange structure; 3, gas main valve; 4, connecting pipe; 5, sealing block; 7, sealing pipe; 8, reset spring; 9, sealing ring; 10, fastening spring. DETAILED DESCRIPTION

[0031] EMBODIMENT

[0032] As shown in Figure 1 and Figure 2 , the stainless steel corrugated hose for connecting gas appliance and gas meter rear main valve is arranged between the gas meter rear main valve 3 and the gas appliance, and a threaded connection cap 2 connected with the pipe body 1 as a rotary pair is arranged at the end close to the gas meter rear main valve 3. The threaded connection cap 2 is fixed by screwing the inner thread of the threaded connection cap 2 with the outer thread of the corresponding end of the gas meter rear main valve 3.

[0033] The end of the pipe body 1 connected with the gas meter rear main valve 3 includes a connecting pipe 4 extending axially into the interior of the gas meter rear main valve 3.

[0034] The outer wall of the connecting pipe 4 includes a sealing block 5 in the shape of a truncated cone.

[0035] The outer diameter of the sealing block 5 decreases with the distance from the gas meter rear main valve 3, and the minimum outer diameter is smaller than the inner diameter of the gas meter rear main valve 3, and the maximum outer diameter is larger than the inner diameter of the gas meter rear main valve 3.

[0036] In actual application, by rotating the threaded connection cap 2, the threaded connection between the threaded connection cap 2 and the gas valve 3 is achieved, so that the threaded connection cap 2 is installed at the interface of the gas valve 3, and the pipe body 1 can be directly installed at the interface of the gas valve 3 through the threaded connection cap 2.

[0037] Generally, the two threaded connection caps 2 are respectively six-eighth internal thread and four-eighth internal thread, and the one connected with the gas valve 3 is the six-eighth internal thread type.

[0038] Through the above technical means, the material can be saved, the gas leakage risk can be reduced, and the number of interfaces that need to be safety checked can be reduced.

[0039] In some embodiments, the gas appliance is a gas stove, a gas stove, and / or a gas water heater.

[0040] In some embodiments, the pipe body 1 has an outer convex flange structure 11 extending outward on the outer wall of the end close to the gas meter rear main valve 3.

[0041] The inner hole of the threaded connection cap 2 is provided with a circle of inwardly extending inner flange structure 21 on the side opposite to the outer flange structure 11 of the gas total valve 3, and the inner flange structure 21 is clamped on the side of the outer flange structure 11 opposite to the gas total valve 3 to form a rotary pair connection with the pipe body 1.

[0042] As shown in Figure 3 some embodiments, a tubular sealing pipe 7 is arranged outside the connecting pipe 4 in the threaded connection cap 2;

[0043] The outer diameter of the sealing pipe 7 is not greater than the small diameter of the internal thread of the threaded connection cap 2, the inner diameter is not less than the maximum outer diameter of the sealing block 5, and a sealing ring 9 is arranged at the end facing the gas total valve 3, and a return spring 8 is arranged between the end away from the gas total valve 3 and the inner flange structure 21.

[0044] In actual application, the gas valve 3 is pressed against the sealing pipe 7 through the return spring 8, so that the sealing pipe 7 is pressed tightly against the port of the gas valve 3, the end of the connecting pipe 4 enters the inside of the gas valve 3, and the outer surface of the connecting pipe 4 is tightly attached to the inner wall of the gas valve 3, so that a certain sealing effect is achieved between the gas valve 3 and the connecting pipe 4, and then the sealing block 5 with a conical head is arranged against the end of the gas valve 3 to block the gap between the gas valve 3 and the connecting pipe 4, thereby enhancing the sealing between the gas valve 3 and the connecting pipe 4 and preventing gas leakage.

[0045] When the end of the gas valve 3 is pressed against the sealing pipe 7, the end of the sealing ring 9 protrudes slightly from the sealing pipe 7, so that the end of the gas valve 3 is pressed against the end of the sealing ring 9, thereby sealing between the gas valve 3 and the sealing pipe 7.

[0046] As shown in Figure 4 some embodiments, the outer wall of the sealing ring 9 is provided with an annular tightening spring 10.

[0047] While the sealing block 5 seals the interface end of the gas valve 3, the inner wall of the sealing ring 9 is tightly attached to the outer surface of the sealing block 5 under the elastic force of the tightening spring 10, thereby further sealing between the interface end of the gas valve 3 and the sealing pipe 7, thereby preventing gas leakage.

[0048] In some embodiments, the sealing ring 9 is made of rubber material.

[0049] The preferred embodiments of the present application are described in detail above. It should be understood that those skilled in the art can make many modifications and changes without creative labor based on the concept of the present application. Therefore, any technical solutions obtained by logical analysis, reasoning or limited experiments based on the existing technology within the concept of the present application shall be within the protection scope defined by the claims.

Claims

1. A stainless steel corrugated flexible hose for connecting a gas appliance to the main valve after a gas meter, located between the main gas valve (3) after the gas meter and the gas appliance, wherein a threaded connecting cap (2) is provided at the end near the connection with the main gas valve (3) and is connected to the hose body (1) in a rotating pair, and is fixed by tightening the internal thread of the threaded connecting cap (2) with the external thread of the corresponding end of the main gas valve (3); characterized in that, One end of the pipe body (1) connected to the gas main valve (3) includes a connecting pipe (4) extending axially into the gas main valve (3); The outer wall of the connecting pipe (4) includes a sealing block (5) in the shape of a headless cone; The outer diameter of the sealing block (5) decreases as the distance between it and the main gas valve (3) decreases, and the outer diameter at the minimum point is smaller than the inner diameter of the main gas valve (3), while the outer diameter at the maximum point is larger than the inner diameter of the main gas valve (3).

2. The stainless steel corrugated flexible hose for connecting a gas appliance to the main valve after the gas meter, as described in claim 1, is characterized in that... The gas appliances are gas stoves, gas furnaces, and / or gas water heaters.

3. The stainless steel corrugated flexible hose for connecting a gas appliance to the main valve after the gas meter, as described in claim 1, is characterized in that... The pipe body (1) has an outwardly extending flange structure (11) on the outer wall near the end connected to the main gas valve (3); The inner hole of the threaded connection cap (2) has an inwardly extending inner flange structure (21) on the side of the outer flange structure (11) facing away from the gas main valve (3). The inner flange structure (21) is connected to the pipe body (1) by clamping the outer flange structure (11) on the side facing away from the gas main valve (3).

4. The stainless steel corrugated flexible hose for connecting a gas appliance to the main valve after the gas meter, as described in claim 3, is characterized in that... Inside the threaded connector cap (2), a tubular sealing tube (7) is fitted outside the connecting tube (4); The outer diameter of the sealing tube (7) is no greater than the minor diameter of the internal thread of the threaded connection cap (2), and the inner diameter is no less than the maximum outer diameter of the sealing block (5). A sealing ring (9) is provided at one end facing the gas main valve (3), and a return spring (8) is provided between the end facing away from the gas main valve (3) and the inner flange structure (21).

5. The stainless steel corrugated flexible hose for connecting a gas appliance to the main valve after the gas meter, as described in claim 4, is characterized in that... The outer wall of the sealing ring (9) is provided with an annular fastening spring (10).

6. The stainless steel corrugated flexible hose for connecting a gas appliance to the main valve after the gas meter, as described in claim 4, is characterized in that... The sealing ring (9) is made of rubber material.

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