Convenient connecting device for gas meter and gas pipeline

Abstract

The utility model discloses a convenient connecting device for a gas meter and a gas pipeline, which belongs to the technical field of gas engineering and comprises a connecting pipe, the gas meter, the gas pipeline and a connecting sleeve, a fixing ring is fixedly connected to the center of the connecting pipe, and a group of first threaded holes distributed in an annular array are formed in each of the left end and the right end of the connecting pipe. A set of second threaded holes distributed in an annular array are formed in the connecting sleeve, matched positioning pins are jointly installed in the first threaded holes and the second threaded holes, an annular groove is formed in the connecting sleeve, an outer sealing ring is fixedly connected in the annular groove, and double sealing is achieved through a first elastic sealing ring and a second elastic sealing ring. The first elastic sealing ring conducts internal sealing on the connecting position through the elastic force of the compression spring, the second elastic sealing ring conducts external sealing through gas expansion of the annular elastic gas bag, the double-sealing design greatly improves the connecting sealing performance, and the gas leakage risk is effectively avoided; and safe and stable operation of the gas supply system is ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to a gas engineering technical field more specifically, relate to a convenient connecting device of gas meter and gas pipeline. BACKGROUND

[0002] In the gas supply system, the connection between the gas meter and the gas pipeline is a crucial link. The traditional connection methods mainly adopt welding, threaded connection or flange connection. However, these connection methods have many shortcomings in practical application.

[0003] Although the welding connection is firm, the construction process is complicated, the technical requirements for workers are high, and high temperature may be generated in the welding process, which causes certain thermal influence on the materials of the gas meter and the gas pipeline, and even may lead to the decline of material performance. In addition, the welding connection is difficult to repair and replace, which needs to cut off the gas supply and carry out complex disassembly work.

[0004] Although the threaded connection is simple to install, the sealing performance is relatively poor, and it is easy to be affected by temperature, pressure and other factors to cause leakage. In the long-term use process, the threaded connection may also increase the risk of gas leakage due to loosening.

[0005] Although the flange connection has good sealing performance, the structure is complex, and multiple bolts need to be fastened during installation, which is complicated and time-consuming. In addition, the flange connection occupies a large space, which may cause installation difficulties for the gas supply system with limited space.

[0006] With the progress of science and technology and the development of gas supply system, people have higher requirements for the connection between the gas meter and the gas pipeline. A connection device that can be quickly installed and disassembled with good sealing performance has become an urgent demand in the field of gas supply system. INVENTION CONTENTS

[0007] 1. Technical problem to be solved

[0008] In view of the problems existing in the prior art, the purpose of the utility model is to provide a convenient connecting device of gas meter and gas pipeline, which realizes double sealing through elastic sealing ring one and elastic sealing ring two. The elastic sealing ring one seals the connection internally by the elastic force of the compression spring, and the elastic sealing ring two seals externally by the gas expansion of the annular elastic air bag. This double sealing design greatly improves the sealing performance of the connection, effectively avoids the risk of gas leakage, and ensures the safe and stable operation of the gas supply system.

[0009] 2. Technical scheme

[0010] To solve the above problems, the utility model adopts the following technical scheme.

[0011] A convenient connecting device of gas meter and gas pipeline, including connecting pipe, the connecting pipe is fixedly installed with gas meter, and the gas meter extends into the connecting pipe, the left and right sides of the connecting pipe are provided with gas pipeline, the connecting sleeve is fixedly sleeved on one end of the connecting pipe close to the connecting pipe, the center of the connecting pipe is fixedly connected with the fixing ring, a group of annular array distribution screw holes one are opened in the left and right ends of the connecting pipe, a group of annular array distribution screw holes two are opened in the connecting sleeve, the matching positioning pin is jointly installed in the screw hole one and the screw hole two, the annular groove is opened in the connecting sleeve, and the outer sealing ring is fixedly connected in the annular groove.

[0012] Further, the left and right sides of the fixing ring are provided with moving rings, the compression spring is fixedly connected between the fixing ring and the moving ring, and the elastic sealing ring one is fixedly connected to the end of the moving ring away from the fixing ring. When the gas pipeline is installed, the compression spring is extruded, and then the elastic sealing ring one realizes good sealing effect of the connecting part by using the elastic force provided by the compression spring.

[0013] Further, the outer diameter of the connecting sleeve is consistent with the inner diameter of the connecting pipe, and the inner and outer diameters of the fixing ring, the moving ring and the elastic sealing ring one are consistent with the inner and outer diameters of the connecting sleeve.

[0014] Further, the connecting sleeve is fixedly connected with the positioning block outside one end close to the connecting pipe, and the positioning grooves matched with the positioning block are opened in the left and right ends of the connecting pipe. Through the cooperation of the positioning block and the positioning groove, the gas pipeline can be connected along the specified angle and path during installation, the alignment of the screw hole one and the screw hole two is ensured, and therefore the quick connection is realized.

[0015] Further, the outer sealing ring comprises the annular elastic air bag fixedly connected to the inner side of the annular groove, and the elastic sealing ring two is fixedly connected to the outer surface of the annular elastic air bag. The sealing of the outer side area of the connecting pipe and the connecting sleeve is realized by using the annular elastic air bag to apply pressure to the elastic sealing ring two, and the double sealing is realized in combination with the internal sealing at the position of the elastic sealing ring one, so that the leakage of gas is avoided while the quick connection is ensured.

[0016] Further, the pressure air bag is fixedly connected to the inner side of the screw hole two, the protective plate is fixedly connected to the outer surface of the pressure air bag, and the pressure air bag is communicated with the annular elastic air bag through the air pipe. When the positioning pin is screwed in, the protective plate is extruded, so that the gas in the pressure air bag enters the annular elastic air bag through the air pipe, the annular elastic air bag expands outward, and the elastic sealing ring two is tightly pressed to improve the sealing effect.

[0017] 3. Beneficial effects

[0018] Compared with the prior art, the utility model has the advantages of:

[0019] (1) the utility model discloses a double seal is realized through elastic sealing ring one and elastic sealing ring two. Elastic sealing ring one utilizes the elastic force of compression spring to carry out internal sealing to the connecting place, and elastic sealing ring two utilizes the gas expansion of annular elastic air bag to carry out external sealing, and this double seal design greatly improves the sealing performance of connection, effectively avoids the leakage risk of fuel gas, and ensures the safe and stable operation of fuel gas supply system.

[0020] (2) the utility model discloses the cooperation of positioning block and positioning groove realizes the quick alignment of connecting pipe and connecting sleeve, in the installation process, only need to be inserted after aligning positioning block and positioning groove, then overcome the elastic force of compression spring and extrude moving ring to the inside until threaded hole one and threaded hole two are aligned, finally, screw in the positioning pin, and the whole installation process is simple and quick, does not need complex operation steps and professional technical workers, greatly reduces installation cost and time cost. BRIEF DESCRIPTION OF DRAWINGS

[0021] Fig. 1 It is the structural schematic diagram of the utility model;

[0022] Fig. 2 It is the structural schematic diagram of the utility model connecting pipe part;

[0023] Fig. 3 It is the structural schematic diagram of the utility model outer sealing ring part.

[0024] Mark explanation in drawing:

[0025] 1, connecting pipe;2, gas meter;3, gas pipeline;4, connecting sleeve;5, positioning pin;6, outer sealing ring;601, annular elastic air bag;602, elastic sealing ring two;603, gas pipe;604, pressure air bag;605, protection plate;7, fixed ring;8, moving ring;9, elastic sealing ring one;10, compression spring;11, positioning block. DETAILED DESCRIPTION

[0026] The technical scheme in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model;Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments, based on the embodiments in the utility model, all other embodiments obtained by the ordinary skill in the art without creative labor belong to the protection scope of the utility model.

[0027] In the description of the utility model, it needs to explain, the term "upper", "lower", "internal", "external", "top / bottom end" and so on indicate the orientation or position relation is based on the orientation or position relation shown in the drawing, only for the convenience of describing the utility model and simplifying the description, and not indicate or imply that the device or element must have a particular orientation, construct and operate in a particular orientation, therefore cannot be understood as the limitation of the utility model. In addition, the term "first", "second" is only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0028] In the description of the utility model, it needs to explain, unless otherwise expressly provided and limited, the term "installation", "set with", "sleeve / interfacing", "connection" and so on, should be understood broadly, for example, "connection", can be fixed connection, can be detachable connection, or integrally connected, can be mechanical connection, can be electrical connection, can be directly connected, can be indirectly connected through intermediate medium, can be the communication inside two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0029] Example 1:

[0030] Please refer to Figs. 1-3 A kind of convenient connecting device of gas meter and gas pipeline, including connecting pipe 1, connecting pipe 1 is fixedly installed with gas meter 2, and gas meter 2 extends into connecting pipe 1, connecting pipe 1 left and right sides are provided with gas pipeline 3, and the end close to connecting pipe 1 of gas pipeline 3 is fixedly sleeved with connecting sleeve 4, the center of connecting pipe 1 is fixedly connected with fixed ring 7, and the left and right ends of connecting pipe 1 are each provided with a group of annular array distribution screw holes one, a group of annular array distribution screw holes two are opened in connecting sleeve 4, and the matching positioning pin 5 is installed in screw hole one and screw hole two, annular groove is opened in connecting sleeve 4, and outer sealing ring 6 is fixedly connected in annular groove.

[0031] Fixed ring 7 left and right sides are provided with moving ring 8, and compression spring 10 is fixedly connected between fixed ring 7 and moving ring 8, and the end away from fixed ring 7 of moving ring 8 is fixedly connected with elastic sealing ring one 9, when installing gas pipeline 3, compression spring 10 is extruded, and then the elastic sealing ring one 9 is realized good sealing effect at connecting place by using the elastic force provided by compression spring 10.

[0032] The outer diameter of connecting sleeve 4 is consistent with the inner diameter of connecting pipe 1, and the inner and outer diameters of fixed ring 7, moving ring 8 and elastic sealing ring one 9 are consistent with the inner and outer diameters of connecting sleeve 4.

[0033] The positioning block 11 is fixedly connected to the outside of the connecting sleeve 4 close to one end of the connecting pipe 1, and the connecting pipe 1 is provided with a positioning groove matched with the positioning block 11 at both ends, so that the connecting pipe 1 can be connected along a specified angle and path during installation of the gas pipeline 3, the alignment of the threaded hole one and the threaded hole two is ensured, and quick connection is realized.

[0034] The outer sealing ring 6 comprises a ring-shaped elastic air bag 601 fixedly connected to the inner side of the annular groove, and an elastic sealing ring two 602 is fixedly connected to the outer surface of the ring-shaped elastic air bag 601, the ring-shaped elastic air bag 601 is used for applying pressure to the elastic sealing ring two 602 to realize sealing of the outer side area of the connecting pipe 1 and the connecting sleeve 4, and the double sealing is realized in combination with the internal sealing at the elastic sealing ring one 9, so that the leakage of gas is avoided while the quick connection is ensured.

[0035] The threaded hole two is fixedly connected with a pressure receiving air bag 604, the pressure receiving air bag 604 is fixedly connected with a protective plate 605 on the outer surface, and the pressure receiving air bag 604 is communicated with the ring-shaped elastic air bag 601 through an air pipe 603, so that when the positioning pin 5 is screwed in, the protective plate 605 is extruded, the pressure receiving air bag 604 is indirectly acted on, the gas in the pressure receiving air bag 604 enters the ring-shaped elastic air bag 601 through the air pipe 603, the ring-shaped elastic air bag 601 is expanded outward, and the sealing effect is improved by abutting against the elastic sealing ring two 602.

[0036] During connection, the positioning block 11 and the positioning groove are aligned and then inserted, the correct posture of the connecting pipe 1 and the connecting sleeve 4 during connection is ensured, the elastic force of the compression spring 10 is overcome, the moving ring 8 is extruded and moved inward, the threaded hole one and the threaded hole two are aligned, then the positioning pin 5 is screwed in and the protective plate 605 is extruded, the gas in the pressure receiving air bag 604 enters the ring-shaped elastic air bag 601 to make the ring-shaped elastic air bag 601 expand, and the elastic sealing ring two 602 is forced to abut against the inner wall of the connecting pipe 1, and the other side is connected in the same way, compared with the prior art, the elastic sealing ring one 9 is used for internally sealing the connection part by the elastic force of the compression spring 10, the elastic sealing ring two 602 is externally sealed by the gas expansion of the ring-shaped elastic air bag 601, the leakage of gas is avoided by double sealing, and the connection is convenient and quick.

[0037] The above is only a preferred specific embodiment of the utility model; however, the protection scope of the utility model is not limited to this. Any person skilled in the art can make equivalent replacement or change according to the technical scheme and improvement concept of the utility model within the technical range disclosed by the utility model, which should be covered in the protection scope of the utility model.

Claims

1. A convenient connection device between a gas meter and a gas pipeline, characterized in that: The system includes a connecting pipe (1), on which a gas meter (2) is fixedly installed and extends into the connecting pipe (1). Gas pipes (3) are provided on both the left and right sides of the connecting pipe (1). A connecting sleeve (4) is fixedly sleeved at one end of the gas pipe (3) near the connecting pipe (1). A fixing ring (7) is fixedly connected at the center of the connecting pipe (1). A set of threaded holes in an annular array is provided at both the left and right ends of the connecting pipe (1). A set of threaded holes in an annular array is provided on the connecting sleeve (4). Matching positioning pins (5) are installed in both threaded holes. An annular groove is provided on the connecting sleeve (4). An outer sealing ring (6) is fixedly connected in the annular groove.

2. The convenient connection device between a gas meter and a gas pipeline according to claim 1, characterized in that: The fixed ring (7) is provided with movable rings (8) on both the left and right sides. A compression spring (10) is fixedly connected between the fixed ring (7) and the movable ring (8). An elastic sealing ring (9) is fixedly connected to the end of the movable ring (8) away from the fixed ring (7).

3. The convenient connection device between a gas meter and a gas pipeline according to claim 2, characterized in that: The outer diameter of the connecting sleeve (4) is consistent with the inner diameter of the connecting pipe (1), and the inner and outer diameters of the fixing ring (7), the moving ring (8) and the elastic sealing ring (9) are consistent with the inner and outer diameters of the connecting sleeve (4).

4. The convenient connection device between a gas meter and a gas pipeline according to claim 1, characterized in that: The connecting sleeve (4) is fixedly connected to a positioning block (11) on the outer side of one end near the connecting pipe (1), and positioning grooves matching the positioning block (11) are opened at both ends of the connecting pipe (1).

5. A convenient connection device for a gas meter and a gas pipeline according to claim 1, characterized in that: The outer sealing ring (6) includes an annular elastic airbag (601) fixedly connected to the inner side of the annular groove, and an elastic sealing ring (602) is fixedly connected to the outer surface of the annular elastic airbag (601).

6. The convenient connection device between a gas meter and a gas pipeline according to claim 5, characterized in that: A pressure-bearing airbag (604) is fixedly connected to the inner side of the threaded hole, and a protective plate (605) is fixedly connected to the outer surface of the pressure-bearing airbag (604). The pressure-bearing airbag (604) is connected to the annular elastic airbag (601) through an air tube (603).

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