Leak-proof fastening device of gas meter connector

Abstract

The utility model relates to the technical field of fuel gas conveying, in particular to a leakproof fastening device of a fuel gas meter connector, which comprises a half-pipe female head and a half-pipe male head, first sealing gaskets are fixedly mounted at the side ends of the half-pipe female head and the half-pipe male head, second sealing gaskets are fixedly mounted on the half-pipe female head and the half-pipe male head, and the half-pipe female head and the half-pipe male head are fixedly connected with the half-pipe female head and the half-pipe male head. A third sealing gasket is fixedly installed in each half-pipe female head, a fourth sealing gasket is fixedly installed on each half-pipe male head, an elastic film is fixedly installed in each half-pipe female head, a warning block is slidably installed in each half-pipe female head, and the two half-pipe female heads and the two half-pipe male heads are fixedly connected through bolts. When leakage or disconnection occurs at the connecting position, due to the sealed space formed by the half-pipe female head and the half-pipe male head, gas cannot be directly leaked into air when leakage occurs at the connecting position, and the effect of avoiding gas leakage at the connecting position is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to gas delivery technical field, especially relate to a kind of anti-leakage fastening device of gas meter joint. BACKGROUND

[0002] Because gas itself has the characteristics of flammable, explosive, therefore it is crucial to ensure the sealing and connection stability of gas meter joint, so the sealing and connection stability of gas meter joint must be highly valued, effective technical means and measures are taken to ensure its safety and reliability;In practical application, the anti-leakage fastening device of gas meter joint usually needs the following technologies:

[0003] 1, reliable sealing structure, for example, use high-quality rubber sealing ring, sealing gasket etc., fill the gap between joint and pipeline, prevent gas leakage;

[0004] 2, strong fastening components, such as high-strength bolts, nut combination, can provide enough fastening force, ensure that joint connection is tight;

[0005] 3, anti-rust and corrosion treatment, such as using galvanizing, chrome plating and other surface treatment process, prolong the service life of device, ensure its performance stability.

[0006] The existing gas meter is installed, usually with wrench to install gas meter and gas pipe, then in the place where connection thread, need to wind appropriate raw material band, so that the connection can be sealed better, prevent gas leakage.

[0007] But in the process of implementing the above technical scheme, it is found that at least the following technical problems exist: after long time use or affected by external environment, gas meter joint and pipeline connection place can be loose due to vibration or thermal expansion and contraction, leading to sealing performance decline, serious time can also lead to joint and pipeline disengagement, prone to gas leakage risk. INVENTION CONTENTS

[0008] In view of the deficiencies of prior art, the utility model provides an anti-leakage fastening device of gas meter joint, solves the technical problems that after long time use or affected by external environment, gas meter joint and pipeline connection place can be loose due to vibration or thermal expansion and contraction, leading to sealing performance decline, serious time can also lead to joint and pipeline disengagement, prone to gas leakage risk.

[0009] To achieve the above purpose, the utility model is realized by the following technical schemes:

[0010] The utility model provides a kind of gas meter joint's anti-leakage fastening device, including half pipe female head and half pipe male head, the side end of half pipe female head and half pipe male head is fixedly installed with first sealing pad, the top of half pipe female head and half pipe male head is fixedly installed with second sealing pad, the inside of half pipe female head is fixedly installed with third sealing pad, fourth sealing pad is fixedly installed on half pipe male head, the inside of half pipe female head is fixedly installed with elastic film, warning block is slidably installed in the inside of half pipe female head, two half pipe female heads, two half pipe male heads are fixedly connected by bolt.

[0011] Preferably: half pipe male head is evenly provided with sliding slot.

[0012] Preferably: sliding slot is slidably installed with sliding plate.

[0013] Preferably: the top of sliding plate is evenly fixedly installed with limit pin.

[0014] Preferably: the bottom of sliding plate is evenly fixedly installed with slide rod.

[0015] Preferably: spring is installed on the outer side wall of slide rod.

[0016] Preferably: limit sleeve is fixedly installed on half pipe female head.

[0017] Preferably: the both ends of half pipe female head and half pipe male head are slidably installed with limit plate.

[0018] Compared with prior art, the utility model has the beneficial effects that:

[0019] I, half pipe female head, half pipe male head are titanium alloy material, have excellent corrosion resistance, and the coefficient of thermal expansion is low and is not easy to occur thermal expansion and contraction;First sealing pad, second sealing pad, third sealing pad and fourth sealing pad are fluorine rubber material, have excellent heat resistance, oil resistance, acid and alkali resistance, good elasticity, the coefficient of thermal expansion is low and is not easy to occur thermal expansion and contraction;Half pipe female head and half pipe male head form a sealed chamber (if necessary, can be daubed sealant between pipeline and second sealing pad), when the connection place leaks or disconnects, half pipe female head and half pipe male head still connect the pipeline of both ends of connection place, can avoid half pipe female head, half pipe male head directly separate, and because the sealed space formed by half pipe female head, half pipe male head, therefore, when the connection place leaks, gas also will not directly leak to air, reaches the effect that can avoid the gas leakage of connection place.

[0020] II. Due to the connection between the gas meter and the gas supply pipeline, the diameter is larger than the pipeline diameter, so it cannot be directly fitted in, so it is necessary to first butt joint the two half pipe female heads from above the connection, and then fix them from both ends of the half pipe female head through bolt and nut, so that the two half pipe female heads can be tightly fitted together, then butt joint the two half pipe male heads from above the connection, and then fix them from both ends of the half pipe male head through bolt and nut, so that the two half pipe male heads can be tightly fitted together, then butt joint the assembled half pipe female head and the assembled half pipe male head, so that the half pipe female head and the half pipe male head rotate relative to each other, so that the half pipe female head and the half pipe male head can be screwed together, achieving the effect of convenient installation.

[0021] III. When the half pipe female head and the half pipe male head are connected, the sliding plate will be pushed into the limiting sleeve under the elastic force of the spring, which can prevent the half pipe female head and the half pipe male head from rotating relative to each other due to vibration, and then the two limiting plates are slidably inserted into the two ends of the half pipe female head and the half pipe male head, which can prevent the bolts and nuts from moving to both sides due to vibration, avoiding the instability of the device caused by vibration, and achieving the effect of improving the stability of the device. BRIEF DESCRIPTION OF DRAWINGS

[0022] The above description is only a summary of the technical scheme of the present application. In order to more clearly understand the technical means of the present application, and can be implemented in accordance with the content of the specification, the following will be described in detail with the preferred embodiments of the present application and with the help of the drawings.

[0023] Figure 1 is the warning block structure diagram of the present application;

[0024] Figure 2 is the explosion structure diagram of the present application;

[0025] Figure 3 is the half pipe female head cross-sectional structure diagram of the present application;

[0026] Figure 4 is the half pipe male head cross-sectional structure diagram of the present application;

[0027] Figure 5 is the sliding chute structure diagram of the present application.

[0028] Legend: 1, half pipe female head; 2, half pipe male head; 3, first sealing gasket; 4, second sealing gasket; 5, third sealing gasket; 6, fourth sealing gasket; 7, elastic film; 8, warning block; 9, bolt; 11, sliding chute; 12, sliding plate; 13, limiting pin; 14, sliding rod; 15, spring; 16, limiting sleeve; 17, limiting plate. DETAILED DESCRIPTION

[0029] The application embodiment provides a leakage-proof fastening device for a gas meter joint, effectively solves the technical problem that the joint between the gas meter and the pipeline may be loosened due to vibration or thermal expansion and contraction after long-term use or under the influence of external environment, leading to a decline in sealing performance, and even causing the joint and the pipeline to be separated, and the risk of gas leakage, the half pipe female head and the half pipe male head are made of titanium alloy material, have excellent corrosion resistance, and have a low coefficient of thermal expansion and are not prone to thermal expansion and contraction, the first sealing gasket, the second sealing gasket, the third sealing gasket and the fourth sealing gasket are made of fluororubber material, have excellent heat resistance, oil resistance, acid and alkali resistance, good elasticity, and a low coefficient of thermal expansion and are not prone to thermal expansion and contraction, a sealed chamber is formed between the half pipe female head and the half pipe male head (sealing glue can be applied between the pipeline and the second sealing gasket if necessary), when leakage or disconnection occurs at the joint, the half pipe female head and the half pipe male head can still connect the pipelines at both ends of the joint, direct disconnection of the half pipe female head and the half pipe male head can be avoided, and since a sealed space is formed by the half pipe female head and the half pipe male head, when leakage occurs at the joint, gas will not directly leak into the air, the effect of avoiding gas leakage at the joint is achieved, since the joint between the gas meter and the gas supply pipeline is larger than the diameter of the pipeline and cannot be directly fitted into the pipeline, the two half pipe female heads are first butted from above the joint, then fixed from both ends of the half pipe female head by means of bolts and nuts, so that the two half pipe female heads can be tightly attached together, then the two half pipe male heads are butted from above the joint, then fixed from both ends of the half pipe male head by means of bolts and nuts, so that the two half pipe male heads can be tightly attached together, then the assembled half pipe female head and the assembled half pipe male head are butted, the half pipe female head and the half pipe male head are relatively rotated, and the half pipe female head and the half pipe male head are threadedly connected together, the effect of facilitating installation is achieved, after the half pipe female head and the half pipe male head are connected, the sliding plate will be pushed to insert the limiting pin into the limiting sleeve under the elastic force of the spring, direct relative rotation between the half pipe female head and the half pipe male head due to vibration can be avoided, then the two limiting plates are slidably inserted into both ends of the half pipe female head and the half pipe male head, the bolts and the nuts can be prevented from moving to both sides due to vibration, the problem that the device is unstable in connection due to vibration is avoided, and the effect of improving the stability of the device in operation is achieved.

[0030] Embodiment

[0031] As Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5As shown, the technical scheme in the embodiment of the application effectively solves the technical problem that the connection between the gas meter joint and the pipeline may be loosened due to vibration or thermal expansion and contraction after long-term use or under the influence of external environment, leading to a decrease in sealing performance, and in severe cases, the joint and the pipeline may be separated, which easily leads to the risk of gas leakage, and the general idea is as follows:

[0032] In view of the problems in the prior art, the utility model provides a kind of leakage-proof fastening device of gas meter joint, including half pipe female head 1 and half pipe male head 2, the side end of half pipe female head 1 and half pipe male head 2 is all fixedly installed with first sealing pad 3, and the upper of half pipe female head 1 and half pipe male head 2 is all fixedly installed with second sealing pad 4.

[0033] Third sealing pad 5 is fixedly installed in the inside of half pipe female head 1, fourth sealing pad 6 is fixedly installed on half pipe male head 2, elastic film 7 is fixedly installed in the inside of half pipe female head 1, warning block 8 is slidably installed in the inside of half pipe female head 1, two half pipe female heads 1, two half pipe male heads 2 are all fixedly connected by bolt 9, and sliding slot 11 is uniformly formed on half pipe male head 2.

[0034] Sliding plate 12 is slidably installed in the inside of sliding slot 11, limiting pin 13 is uniformly fixedly installed at the top of sliding plate 12, sliding rod 14 is uniformly fixedly installed at the bottom of sliding plate 12, spring 15 is installed on the outer side wall of sliding rod 14, limiting sleeve 16 is uniformly fixedly installed on half pipe female head 1, and limiting plate 17 is slidably installed at the two ends of half pipe female head 1 and half pipe male head 2.

[0035] Working principle:

[0036] The first step, the half pipe female head 1, the half pipe male head 2 is titanium alloy material, has excellent corrosion resistance, and the thermal expansion coefficient is low and not easy to occur thermal expansion and cold shrinkage; The first gasket 3, the second gasket 4, the third gasket 5 and the fourth gasket 6 are fluorine rubber material, have excellent heat resistance, oil resistance, acid and alkali resistance, good elasticity, low thermal expansion coefficient and not easy to occur thermal expansion and cold shrinkage; The elastic film 7 is made of silicone rubber material, has excellent sealing performance, high elasticity and good anti-aging characteristics; The warning block 8 is coated with paint on the surface; During installation, since the connection between the gas meter and the gas supply pipeline is larger than the diameter of the pipeline (gas meter pipeline and gas supply pipeline), it is necessary to first butt joint the two half pipe female heads 1 from above the connection, then fix them from both ends of the half pipe female head 1 by bolts 9 and nuts, so that the two half pipe female heads 1 can be tightly attached together, when the two half pipe female heads 1 are attached together, the first gasket 3 on the side end of the half pipe female head 1 will also be attached, the second gasket 4 on the half pipe female head 1 will also be attached to the outer wall of the gas meter pipeline, then the two half pipe male heads 2 are butt jointed from above the connection, then fixed from both ends of the half pipe male head 2 by bolts 9 and nuts, so that the two half pipe male heads 2 can be tightly attached together, when the two half pipe male heads 2 are attached together, the first gasket 3 on the side end of the half pipe male head 2 will also be attached, the second gasket 4 on the half pipe male head 2 will also be attached to the outer wall of the gas supply pipeline, then the two half pipe female heads 1 and the two half pipe male heads 2 are butt jointed, the half pipe female head 1 and the half pipe male head 2 are relatively rotated, the half pipe female head 1 and the half pipe male head 2 are threadedly connected together, after the half pipe female head 1 and the half pipe male head 2 are connected, the connection is wrapped inside, at the same time, the top end of the half pipe male head 2 will be attached to the third gasket 5, the bottom end of the half pipe male head 2 will be attached to the fourth gasket 6, so that a sealed cavity is formed between the half pipe female head 1 and the half pipe male head 2 (if necessary, sealant can be applied between the pipeline and the second gasket 4), when the connection leaks or is disconnected, the half pipe female head 1 and the half pipe male head 2 still connect the pipelines at both ends of the connection, which can avoid the half pipe female head 1 and the half pipe male head 2 from being directly disconnected, and since the half pipe female head 1 and the half pipe male head 2 form a sealed space, when the connection leaks, the gas will not directly leak into the air, when the gas enters the sealed cavity between the half pipe female head 1 and the half pipe male head 2, the pressure inside will increase, the elastic film 7 will deform under the action of the pressure, the elastic film 7 will lift the warning block 8 upwards, when the red warning block 8 is observed to pop out, it indicates that the connection between the gas meter and the gas supply pipeline has leaked, so that timely maintenance can be carried out.

[0037] Second, when the half pipe female head 1 and half pipe male head 2 are connected, the sliding plate 12 will be pushed by the spring 15 to insert the limiting pin 13 into the limiting sleeve 16, which can avoid the relative rotation between the half pipe female head 1 and half pipe male head 2 due to vibration (gas flow will cause a certain vibration of the pipeline), when it is needed to be disassembled, sliding the sliding plate 12 downward to make the limiting pin 13 leave the inside of the limiting sleeve 16, so that the half pipe female head 1 and half pipe male head 2 can be rotated, then sliding the two limiting plates 17 into the two ends of the half pipe female head 1 and half pipe male head 2, which can avoid the bolts 9 and nuts from moving to the two sides due to vibration.

[0038] Finally, it should be noted that: obviously, the above examples are only for clearly illustrating the utility model, and not limited to the implementation. For those skilled in the art, on the basis of the above description, other different forms of changes or variations can also be made. Here, it is not necessary and impossible to enumerate all the implementation. The obvious changes or variations derived therefrom are still within the scope of the utility model.

Claims

1. A leak-proof fastening device for a gas meter joint comprising a half female (1) and a half male (2), characterized in that, The side end of the half pipe female head (1) and the half pipe male head (2) is fixedly installed with a first sealing gasket (3), the upper end of the half pipe female head (1) and the half pipe male head (2) is fixedly installed with a second sealing gasket (4), the inside of the half pipe female head (1) is fixedly installed with a third sealing gasket (5), the half pipe male head (2) is fixedly installed with a fourth sealing gasket (6), the inside of the half pipe female head (1) is fixedly installed with a elastic film (7), the inside of the half pipe female head (1) is slidably installed with a warning block (8), the two half pipe female heads (1) and the two half pipe male heads (2) are fixedly connected through bolts (9).

2. A leak-proof fastening device for a gas meter joint as claimed in claim 1, characterized in that The half pipe male head (2) is uniformly provided with a sliding groove (11).

3. A leak-proof fastening device for a gas meter connection according to claim 2, characterized in that The sliding groove (11) is slidably installed with a sliding plate (12).

4. A leak-proof fastening device for a gas meter connection according to claim 3, characterized in that The top end of the sliding plate (12) is uniformly fixedly installed with a limiting pin (13).

5. A leak-proof fastening device for a gas meter connection according to claim 3, characterized in that The bottom end of the sliding plate (12) is uniformly fixedly installed with a sliding rod (14).

6. A leak-proof fastening device for a gas meter connection according to claim 5, characterized in that The outer side wall of the sliding rod (14) is installed with a spring (15).

7. A leak-proof fastening device for a gas meter connection as defined in claim 1, characterized in that The half pipe female head (1) is uniformly fixedly installed with a limiting sleeve (16).

8. A leak-proof fastening device for a gas meter connection as defined in claim 1, characterized in that The two ends of the half pipe female head (1) and the half pipe male head (2) are slidably installed with a limiting plate (17).

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