Indoor gas pipeline water-proof backflow prevention system

Abstract

The utility model discloses an indoor gas pipeline waterproof backflow system, include: gas meter, outlet pipe, intermediate pipe, connecting pipe and detection mechanism, the upper end fixed connection of gas meter has outlet pipe, the side of outlet pipe away from gas meter is provided with intermediate pipe, connecting pipe respectively, the upper end of intermediate pipe, connecting pipe is provided with detection mechanism for detecting the pressure inside pipe respectively, the utility model discloses be provided with detection mechanism for detecting the pressure inside pipe, when installing gas, through the observation detection mechanism, whether the device is misconnected to the detection of water supply pipeline, and is provided with two detection mechanisms, when misconnected to the water supply pipeline, can detect the position of water flow, alarm simultaneously, quick positioning water inlet position, facilitate the maintenance to pipeline, reduce the time -consuming of maintenance, through the mechanical logic of double -pressure detection point + gradient spring setting, realized low -cost, high reliability's water inlet positioning.

Description

Technical Field

[0001] This utility model relates to the field of waterproof backflow technology for gas pipelines, specifically an indoor gas pipeline waterproof backflow system. Background Technology

[0002] With the widespread use of natural gas, it has become an indispensable energy source in people's lives. However, this has also gradually exposed some indoor gas safety accidents. Among them, accidents caused by gas water heater installers mistakenly connecting the gas pipe to the water inlet pipe, resulting in water blockage, often occur. The pressure of tap water in a typical household is much greater than that of gas. A large amount of tap water enters the underground gas pipeline network through the indoor pipes, causing gas outages for a large number of users and even damaging gas equipment and facilities. Existing technology mainly uses check valves or gas meters to prevent gas backflow.

[0003] The existing device cannot detect the pressure inside the pipeline during use. During maintenance, multiple pipelines need to be disassembled and inspected one by one, which affects the maintenance work. Secondly, the check valve with waterproof backflow function has poor compatibility with gas pipelines. Utility Model Content

[0004] The purpose of this utility model is to provide a waterproof backflow system for indoor gas pipelines. By setting up two detection mechanisms, which can issue alarms, it is easy to remind maintenance personnel of the repair location and facilitate the maintenance work, thereby solving the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A waterproof backflow prevention system for indoor gas pipelines includes:

[0007] The gas meter includes a gas outlet pipe, an intermediate pipe, a connecting pipe, and a detection mechanism. The gas outlet pipe is fixedly connected to the upper end of the gas meter. An intermediate pipe and a connecting pipe are respectively installed on the side of the gas outlet pipe away from the gas meter. A detection mechanism for detecting the internal pressure of the pipeline is respectively installed at the upper end of the intermediate pipe and the connecting pipe.

[0008] Preferably, the detection mechanism includes a fixed tube, a piston, a limiting ring, a lifting rod, a spring, an adjusting component, and an alarm component. The upper ends of the intermediate tube and the connecting tube are respectively fixedly connected to the fixed tube. The pistons are slidably connected inside the two fixed tubes. The upper and lower ends of the pistons are provided with limiting rings, which are fixedly connected to the fixed tubes. The upper end of the piston is fixedly connected to the lifting rod. A spring is sleeved on the outside of the lifting rod. An adjusting component for adjusting the spring force is provided on the outside of the lifting rod. The upper ends of the two fixed tubes are provided with alarm components for reminding the operator.

[0009] Preferably, the adjusting assembly includes a lifting plate, a mounting plate, through holes, a fixing plate, and fixing bolts. The lifting plate is slidably connected inside both of the two fixing tubes. The lifting plate is slidably connected to the lifting rod. Two symmetrically distributed mounting plates are fixedly connected to the upper end of the lifting plate. Multiple through holes are evenly distributed inside the mounting plates. Two symmetrical fixing plates are fixedly connected to the upper ends of the two fixing tubes. Fixing bolts are provided inside the fixing plates. The fixing bolts contact the multiple through holes respectively.

[0010] Preferably, the alarm assembly includes a horizontal plate, a control button, an alarm light, and a battery. The upper ends of the two fixed tubes are fixedly connected to the horizontal plate, the lower end of the horizontal plate is fixedly connected to the control button, the upper end of the horizontal plate is fixedly connected to the alarm light, and the upper end of the horizontal plate is provided with two batteries for powering the alarm light.

[0011] Preferably, the gas meter is provided with an air inlet pipe at the upper end to control the gas intake of the gas meter.

[0012] Preferably, a check valve is provided between the outlet pipe and the intermediate pipe via a first flange and a second flange.

[0013] Preferably, a self-closing valve is provided between the intermediate pipe and the connecting pipe.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] 1. This utility model incorporates a detection mechanism for detecting the internal pressure of the pipeline. During gas pipeline installation, the detection mechanism can be observed to check whether the device has been mistakenly connected to a water supply pipeline. With two detection mechanisms, when mistakenly connected to a water supply pipeline, the position of the water flow can be detected, and an alarm can be triggered simultaneously. This allows for rapid location of the water inlet, facilitating pipeline maintenance and reducing maintenance time. Through the mechanical logic of dual pressure detection points and gradient spring settings, low-cost and highly reliable water inlet positioning is achieved.

[0016] 2. This utility model achieves a double-layer waterproof backflow effect by adopting a combination of "gas meter + anti-backflow check valve + self-closing valve". In the event that the self-closing valve fails to achieve waterproof backflow, the anti-backflow check valve provides a second layer of protection. It can also prevent water from entering the underground gas pipeline network and reduce the impact range of water blockage accidents. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model;

[0018] Figure 2 This is a schematic diagram showing the partial structure of this utility model;

[0019] Figure 3 This is a schematic diagram of the structure of the testing mechanism of this utility model;

[0020] Figure 4 This is a schematic diagram of the structure of the adjustment component of this utility model;

[0021] Figure 5 This is a schematic diagram of the alarm component of this utility model.

[0022] In the diagram: 1. Gas meter; 2. Inlet pipe; 3. Outlet pipe; 4. First flange; 5. Check valve; 6. Second flange; 7. Intermediate pipe; 8. Self-closing valve; 9. Connecting pipe; 10. Detection mechanism; 101. Fixed pipe; 102. Piston; 103. Limit ring; 104. Lifting rod; 105. Spring; 106. Adjusting assembly; 1061. Lifting plate; 1062. Mounting plate; 1063. Through hole; 1064. Fixed plate; 1065. Fixing bolt; 107. Alarm assembly; 1071. Horizontal plate; 1072. Control button; 1073. Alarm light; 1074. Battery. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figure 1-5 This utility model provides an indoor gas pipeline waterproof backflow system, including: a gas meter 1, a gas outlet pipe 3, an intermediate pipe 7, a connecting pipe 9, and a detection mechanism 10. The gas meter 1 is fixedly connected to the upper end of the gas outlet pipe 3. The intermediate pipe 7 and the connecting pipe 9 are respectively arranged on the side of the gas outlet pipe 3 away from the gas meter 1. The upper ends of the intermediate pipe 7 and the connecting pipe 9 are respectively provided with a detection mechanism 10 for detecting the internal pressure of the pipeline.

[0025] The detection mechanism 10 includes a fixed tube 101, a piston 102, a limiting ring 103, a lifting rod 104, a spring 105, an adjusting component 106, and an alarm component 107. The upper ends of the intermediate tube 7 and the connecting tube 9 are respectively fixedly connected to the fixed tube 101. The piston 102 is slidably connected inside both fixed tubes 101. The upper and lower ends of the piston 102 are provided with limiting rings 103, which are fixedly connected to the fixed tubes 101. The upper end of the piston 102 is fixedly connected to the lifting rod 104. The outer side of the lifting rod 104 is fitted with a spring 105. The outer side of the lifting rod 104 is provided with an adjusting component 106 for adjusting the elasticity of the spring 105. The upper ends of both fixed tubes 101 are provided with alarm components 107 for reminding the operator.

[0026] When the pressure inside the lower pipe is greater than the elastic force of the spring 105 on the piston 102, the piston 102 rises, which in turn drives the lifting rod 104 to rise, compressing the spring 105. The two limiting rings 103 limit the upper and lower ends of the piston 102 respectively, to prevent damage to the spring 105 and to prevent the piston 102 from detaching from the fixed pipe 101.

[0027] The adjustment assembly 106 includes a lifting plate 1061, a mounting plate 1062, a through hole 1063, a fixing plate 1064, and fixing bolts 1065. The lifting plate 1061 is slidably connected inside both fixing tubes 101. The lifting plate 1061 is slidably connected to the lifting rod 104. Two symmetrically distributed mounting plates 1062 are fixedly connected to the upper end of the lifting plate 1061. Multiple through holes 1063 are evenly distributed inside the mounting plates 1062. Two symmetrically distributed fixing plates 1064 are fixedly connected to the upper end of both fixing tubes 101. Fixing bolts 1065 are provided inside the fixing plates 1064. The multiple fixing bolts 1065 are in contact with the multiple through holes 1063 respectively.

[0028] By using fixing bolts 1065 to engage with through holes 1063 at different positions, the mounting plate 1062 is fixed at different heights. The mounting plate 1062 drives the lifting plate 1061 to rise and fall, which allows the lifting plate 1061 to compress the spring 105 to different degrees. This makes the elastic force of the spring 105 greater than the pressure of the gas on the piston 102, but less than the water pressure of the tap water. In a household setting, the tap water pressure (0.1-0.3 MPa) is much higher than the gas pressure (0.001-0.01 MPa).

[0029] The alarm assembly 107 includes a horizontal plate 1071, a control button 1072, an alarm light 1073, and a battery 1074. The upper ends of the two fixed tubes 101 are fixedly connected to the horizontal plate 1071, the lower end of the horizontal plate 1071 is fixedly connected to the control button 1072, the upper end of the horizontal plate 1071 is fixedly connected to the alarm light 1073, and the upper end of the horizontal plate 1071 is provided with two batteries 1074 for powering the alarm light 1073.

[0030] Control button 1072 controls the switch of alarm light 1073, and battery 1074 supplies power to alarm light 1073. A horizontal plate 1071 is used to install control button 1072, alarm light 1073, and battery 1074. The recommended model for control button 1072 is Schneider XB2-BS542C (waterproof and dustproof, IP65, 1NO contact, suitable for humid environments). The recommended model for alarm light 1073 is Werma 811.240 (explosion-proof, Ex II 2G, suitable for potentially hazardous gas leak areas). The recommended model for battery 1074 is EEMB ER14505M (3.6V lithium-ion battery, 10-year lifespan, suitable for low-power alarm circuits).

[0031] An air inlet pipe 2 is installed at the upper end of the gas meter 1 to control the air intake of the gas meter 1.

[0032] The intake pipe 2 is fixed to the upper end of the gas meter 1, and a valve is provided on the outside of the intake pipe 2. The gas enters the gas meter 1 by opening and closing the valve.

[0033] A check valve 5 is installed between the air outlet pipe 3 and the intermediate pipe 7 via the first flange 4 and the second flange 6.

[0034] A first flange 4 is fixedly connected to one side of the outlet pipe 3, and a second flange 6 is fixedly connected to the side of the intermediate pipe 7 near the outlet pipe 3. The check valve 5 is installed by cooperating with the flange on the check valve 5 through the first flange 4 and the second flange 6.

[0035] A self-closing valve 8 is installed between the intermediate pipe 7 and the connecting pipe 9.

[0036] For example, one side of the intermediate pipe 7 and the connecting pipe 9 are respectively connected to the self-closing valve 8 to install the self-closing valve 8.

[0037] The working principle of this utility model is as follows: During installation, the first flange 4 and the second flange 6 are matched with the flange on the check valve 5 to install the check valve 5. One side of the intermediate pipe 7 and the connecting pipe 9 are respectively connected to the self-closing valve 8 to install the self-closing valve 8. When it is mistakenly connected to the tap water pipe, when the pressure inside the lower pipe is greater than the elastic force of the spring 105, the piston 102 rises, which at the same time drives the lifting rod 104 to rise, compressing the spring 105. The lifting rod 104 contacts the control button 1072, and the control button 1072 controls the alarm light 1073 to sound an alarm, reminding that the pipe is installed incorrectly. At the same time, the check valve 5 and the self-closing valve 8 are closed to prevent water from entering the gas meter 1. When both alarm lights 1073 are lit, the sealing of the self-closing valve 8 needs to be checked.

[0038] By using the fixing bolts 1065 to cooperate with the through holes 1063 at different positions, the mounting plate 1062 is fixed at different heights. The mounting plate 1062 drives the lifting plate 1061 to rise and fall, so that the lifting plate 1061 can compress the spring 105 to different degrees, making the elastic force of the spring 105 greater than the pressure of the gas on the piston 102, and less than the water pressure of the tap water.

[0039] After correct installation, open the valve on the inlet pipe 2, and the gas enters the gas meter 1 and enters the gas terminal through the outlet pipe 3 and other pipelines.

[0040] The alarm light 1073 in this application is controlled automatically by the control button 1072. The control circuit of the control button 1072 can be implemented by simple programming by those skilled in the art, which is common knowledge in the field. Furthermore, this application is mainly used to protect the structure, shape and combination thereof, so the control method and circuit connection will not be explained in detail. The device is powered by a built-in power supply or an external power supply.

[0041] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A waterproof backflow system for indoor gas pipelines, characterized in that, include: The gas meter (1), gas outlet pipe (3), intermediate pipe (7), connecting pipe (9) and detection mechanism (10) are provided. The gas meter (1) is fixedly connected to the upper end of the gas outlet pipe (3). The gas outlet pipe (3) is provided with intermediate pipe (7) and connecting pipe (9) on the side away from the gas meter (1). The upper ends of intermediate pipe (7) and connecting pipe (9) are respectively provided with detection mechanism (10) for detecting the internal pressure of the pipeline. The detection mechanism (10) includes a fixed tube (101), a piston (102), a limiting ring (103), a lifting rod (104), a spring (105), an adjustment component (106), and an alarm component (107). The upper ends of the intermediate tube (7) and the connecting tube (9) are respectively fixedly connected to the fixed tube (101). The piston (102) is slidably connected inside the two fixed tubes (101). The upper and lower ends of the piston (102) are provided with limiting rings (103). The limiting rings (103) are fixedly connected to the fixed tubes (101). The upper end of the piston (102) is fixedly connected to the lifting rod (104). The outer side of the lifting rod (104) is fitted with a spring (105). The outer side of the lifting rod (104) is provided with an adjustment component (106) for adjusting the elastic force of the spring (105). The upper ends of the two fixed tubes (101) are provided with an alarm component (107) for reminding the operator.

2. The indoor gas pipeline waterproof backflow system according to claim 1, characterized in that, The adjustment assembly (106) includes a lifting plate (1061), a mounting plate (1062), a through hole (1063), a fixing plate (1064), and fixing bolts (1065). The lifting plate (1061) is slidably connected inside the two fixing tubes (101). The lifting plate (1061) is slidably connected to the lifting rod (104). The upper end of the lifting plate (1061) is fixedly connected to two symmetrically distributed mounting plates (1062). The interior of the mounting plates (1062) is provided with a plurality of evenly distributed through holes (1063). The upper ends of the two fixing tubes (101) are fixedly connected to two symmetrically distributed fixing plates (1064). The interior of the fixing plates (1064) is provided with fixing bolts (1065). The fixing bolts (1065) are respectively in contact with the plurality of through holes (1063).

3. The indoor gas pipeline waterproof backflow system according to claim 1, characterized in that, The alarm assembly (107) includes a horizontal plate (1071), a control button (1072), an alarm light (1073), and a battery (1074). The upper ends of the two fixed tubes (101) are fixedly connected to the horizontal plate (1071), the lower end of the horizontal plate (1071) is fixedly connected to the control button (1072), the upper end of the horizontal plate (1071) is fixedly connected to the alarm light (1073), and the upper end of the horizontal plate (1071) is provided with two batteries (1074) for powering the alarm light (1073).

4. The indoor gas pipeline waterproof backflow system according to claim 1, characterized in that, The gas meter (1) is provided with an air inlet pipe (2) at the upper end to control the gas intake of the gas meter (1).

5. The indoor gas pipeline waterproof backflow system according to claim 1, characterized in that, A check valve (5) is provided between the outlet pipe (3) and the intermediate pipe (7) via a first flange (4) and a second flange (6).

6. A waterproof backflow system for indoor gas pipelines according to claim 5, characterized in that, A self-closing valve (8) is provided between the intermediate pipe (7) and the connecting pipe (9).

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