Fuel gas overflowing automatic cut-off device

Abstract

The utility model provides a fuel gas overflowing automatic cut-off device, and belongs to the technical field of fuel gas safety equipment. The automatic cutting-off device for fuel gas overflowing comprises a first protective cover, a second protective cover, a fuel gas pipeline, a pressure sensor, an electromagnetic valve, an ultrasonic flow sensor, a transverse plate, a pull strip, a spring and an insertion rod, and the first protective cover and the second protective cover are both arranged on the fuel gas pipeline in a clamped mode; according to the gas overflowing automatic cut-off device, the pressure in the gas pipeline is subjected to overpressure protection through the pressure sensor, manual operation or remote control is not needed, and gas can be cut off through the electromagnetic valve; and the pressure sensor, the electromagnetic valve and the ultrasonic flow sensor are subjected to dustproof and anti-collision protection through the first protective cover and the second protective cover, so that the use safety of the pressure sensor, the electromagnetic valve and the ultrasonic flow sensor is improved, and better use experience is brought to a user.

Description

Technical Field

[0001] The present application relates to the technical field of gas safety equipment, and in particular to a gas over-flow automatic cut-off device. Background Art

[0002] Gas equipment and pipelines are important facilities to ensure reliable gas supply in cities. They transport combustible media and are widely distributed, involving the gas consumption of thousands of households. Gas equipment and pipelines are distributed in various locations in the city, covering a wide area, including high-pressure stations and pipelines in the suburbs, gas overhead pipes and risers in high-rise buildings or multi-story buildings, regional pressure regulating stations set up beside municipal roads, and building pressure regulating boxes set up in residential areas, as well as SCADA systems for monitoring gas equipment and pipelines. At present, gas cut-off ball valves are often used to protect gas pipelines from overcurrent. However, since their use requires manual direct operation or remote control, when operators find that the pipeline operation indicators exceed the standard, the abnormal gas operation may have formed a certain scale, and the response time is long. At the same time, once there is a problem with remote control, it is easy to cause greater losses and casualties. In addition, there is a lack of dust and anti-collision protection for the gas cut-off ball valve. Due to the diverse installation environments of the gas cut-off ball valve, there is a situation where the gas cut-off ball valve is damaged, which reduces the safety of the use of the gas cut-off ball valve and brings a bad user experience. Utility Model Content

[0003] In order to make up for the above shortcomings, the present application provides a gas overflow automatic cut-off device, which aims to improve the current overflow protection of gas pipelines using gas cut-off ball valves. However, since its use requires direct manual operation or remote control, when the operator finds that the pipeline operation indicators exceed the standard, the abnormal gas operation may have formed a certain scale, and the time required for response is relatively long. At the same time, once there is a problem with the remote control, it is easy to cause greater losses and casualties. In addition, there is a lack of dust and anti-collision protection for the gas cut-off ball valve. Due to the diverse installation environments of the gas cut-off ball valve, there is a possibility of damage to the gas cut-off ball valve, which reduces the safety of the use of the gas cut-off ball valve.

[0004] This application is implemented as follows:

[0005] The present application provides a gas over-flow automatic cut-off device, comprising a first protective cover, a second protective cover, a gas pipeline, a pressure sensor, a solenoid valve, an ultrasonic flow sensor, a horizontal plate, a pull bar, a spring and a plug rod, wherein the first protective cover and the second protective cover are both clamped on the gas pipeline, and the first protective cover is hinged on the second protective cover;

[0006] The pressure sensor, the solenoid valve and the ultrasonic flow sensor are all arranged on the gas pipeline, and the pressure sensor and the ultrasonic flow sensor are both electrically connected to the solenoid valve. The cross plate is fixed on the outer wall of the second protective cover, the spring is fixed between the cross plate and the pull rod, one end of the insertion rod is fixed on the pull rod, the insertion rod passes through the spring, and the insertion rod also passes through the first protective cover and the second protective cover.

[0007] In one embodiment of the present application, a connecting flange is further included, and the connecting flange is fixed to the end of the gas pipeline.

[0008] In one embodiment of the present application, a sealing gasket is further included, and the sealing gasket is arranged between the first protective cover and the second protective cover.

[0009] In one embodiment of the present application, a sealing ring is further included, and the sealing ring is sleeved on the gas pipeline. The sealing ring is also arranged on the first protective cover and the second protective cover.

[0010] In one embodiment of the present application, a plurality of springs are provided, and the plurality of springs are linearly and equidistantly arranged on the cross plate.

[0011] In one embodiment of the present application, a through hole is formed on both the first protective cover and the second protective cover, and the insertion rod passes through the through hole.

[0012] The beneficial effects of the present application are as follows: the present application obtains a gas overflow automatic cut-off device through the above-mentioned design. When in use, the pressure sensor monitors the pressure in the gas pipeline in real time. When the pressure sensor monitors that the pressure in the gas pipeline has reached a set maximum value, the pressure sensor feeds back a signal to the control terminal, and the control terminal cuts off the upstream gas to protect downstream instruments, meters and equipment and reduce response time. The ultrasonic flow sensor monitors the gas flow through the gas pipeline in real time. When the ultrasonic flow sensor monitors that the gas flow has reached a set maximum value, the ultrasonic flow sensor transmits a signal to the solenoid valve and the control terminal, and the solenoid valve is closed. In addition, the first protective cover and the second protective cover provide dust and collision protection for the pressure sensor, the solenoid valve and the ultrasonic flow sensor. When When the pressure sensor, solenoid valve and ultrasonic flow sensor need to be repaired, pull the pull rod to make the end of the rod leave the first protective cover, open the second protective cover, and then you can repair the pressure sensor, solenoid valve and ultrasonic flow sensor. The automatic gas overflow cut-off device uses the pressure sensor to protect the pressure in the gas pipeline from overpressure, and the solenoid valve and ultrasonic flow sensor protect the gas from overflow. The solenoid valve can be used to cut off the gas flow without manual operation or remote control. In addition, the pressure sensor, solenoid valve and ultrasonic flow sensor are protected from dust and collision by the first and second protective covers, which improves the safety of the pressure sensor, solenoid valve and ultrasonic flow sensor, and brings a better user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions of the implementation methods of the present application, the drawings required for use in the implementation methods will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0014] Figure 1 It is a schematic diagram of the three-dimensional structure of a gas over-flow automatic cut-off device provided in an embodiment of the present application;

[0015] Figure 2 A diagram showing the relationship between the gas pipeline, pressure sensor, solenoid valve and ultrasonic flow sensor provided in the embodiment of the present application;

[0016] Figure 3 A diagram showing the relationship between the gas pipeline, the gasket and the sealing ring provided in the embodiment of the present application;

[0017] Figure 4 A schematic diagram of the three-dimensional structure of the second protective cover, cross plate, pull rod, spring and insertion rod provided in an embodiment of the present application.

[0018] In the figure: 110 - first protective cover; 120 - second protective cover; 130 - gas pipeline; 140 - pressure sensor; 150 - solenoid valve; 160 - ultrasonic flow sensor; 170 - connecting flange; 180 - sealing gasket; 190 - sealing ring; 191 - horizontal plate; 192 - pull rod; 193 - spring; 194 - plug rod; 195 - through hole. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solutions and advantages of the implementation methods of this application clearer, the technical solutions in the implementation methods of this application will be clearly and completely described below in conjunction with the drawings in the implementation methods of this application. Obviously, the described implementation methods are part of the implementation methods of this application, not all of the implementation methods. Based on the implementation methods in this application, all other implementation methods obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0020] Example

[0021] See also Figure 1 - Figure 4 The present application provides a technical solution: a gas over-flow automatic cut-off device, comprising a first protective cover 110, a second protective cover 120, a gas pipeline 130, a pressure sensor 140, a solenoid valve 150, an ultrasonic flow sensor 160, a cross plate 191, a pull bar 192, a spring 193 and a plug 194, the first protective cover 110 and the second protective cover 120 are both clamped on the gas pipeline 130, and also include a connecting flange 170, the connecting flange 170 is fixed to the end of the gas pipeline 130, and the setting of the connecting flange 170 facilitates the installation of the gas pipeline 130 on the docking pipeline, The first protective cover 110 is hinged on the second protective cover 120, and further includes a sealing gasket 180, which is arranged between the first protective cover 110 and the second protective cover 120. The setting of the sealing gasket 180 makes the sealing between the first protective cover 110 and the second protective cover 120 better. It also includes a sealing ring 190, which is sleeved on the gas pipeline 130. The sealing ring 190 is also arranged on the first protective cover 110 and the second protective cover 120. The setting of the sealing ring 190 makes the sealing between the first protective cover 110, the second protective cover 120 and the gas pipeline 130 better.

[0022] The pressure sensor 140, the solenoid valve 150 and the ultrasonic flow sensor 160 are all arranged on the gas pipeline 130. The pressure sensor 140 and the ultrasonic flow sensor 160 are both electrically connected to the solenoid valve 150. The cross plate 191 is fixed on the outer wall of the second protective cover 120. The spring 193 is fixed between the cross plate 191 and the pull rod 192. There are multiple springs 193. The multiple springs 193 are linearly equidistantly arranged on the cross plate 191. The multiple springs 193 make the first protective cover 110 and the second protective cover 120 more firmly fixed together. One end of the insertion rod 194 is fixed on the pull rod 192. The insertion rod 194 penetrates the spring 193. The insertion rod 194 also penetrates the first protective cover 110 and the second protective cover 120. The first protective cover 110 and the second protective cover 120 are both provided with a through hole 195. The insertion rod 194 penetrates the through hole 195. The setting of the through hole 195 facilitates the insertion rod 194 to pass through the first protective cover 110 and the second protective cover 120.

[0023] Specifically, the working principle of the gas overflow automatic cut-off device is as follows: when in use, the pressure sensor 140 monitors the pressure in the gas pipeline 130 in real time. When the pressure sensor 140 detects that the pressure in the gas pipeline 130 reaches the set maximum value, the pressure sensor 140 feeds back a signal to the control terminal, and the control terminal cuts off the upstream gas to protect the downstream instruments, meters and equipment and reduce the response time. The ultrasonic flow sensor 160 monitors the gas flow flowing through the gas pipeline 130 in real time. When the ultrasonic flow sensor 160 detects that the gas flow reaches the set maximum value, the ultrasonic flow sensor 160 transmits a signal to the solenoid valve 150 and the control terminal, and the solenoid valve 150 is closed. In addition, the first protective cover 110 and the second protective cover 120 provide dust and collision protection for the pressure sensor 140, the solenoid valve 150 and the ultrasonic flow sensor 160. When the pressure sensor 140 and the solenoid valve 150 need to be closed, the ultrasonic flow sensor 160 and the solenoid valve 150 are closed. When repairing the gas pipeline 130 and the ultrasonic flow sensor 160, pull the pull bar 192 to make the end of the insertion rod 194 leave the first protective cover 110, open the second protective cover 120, and then you can repair the pressure sensor 140, the solenoid valve 150 and the ultrasonic flow sensor 160. The automatic gas overflow cut-off device protects the pressure in the gas pipeline 130 from overpressure through the pressure sensor 140, and the solenoid valve 150 and the ultrasonic flow sensor 160 protect the gas from overflow. The solenoid valve 150 can be used to cut off the gas flow without manual operation or remote control. In addition, the pressure sensor 140, the solenoid valve 150 and the ultrasonic flow sensor 160 are protected from dust and collision by the first protective cover 110 and the second protective cover 120, thereby improving the safety of the pressure sensor 140, the solenoid valve 150 and the ultrasonic flow sensor 160, and bringing a better use experience to the user.

[0024] It should be noted that the specific models and specifications of the pressure sensor 140, the solenoid valve 150 and the ultrasonic flow sensor 160 need to be selected and determined according to the actual specifications of the device, etc. The specific selection calculation method adopts the existing technology in this field, so it will not be described in detail.

[0025] The power supply and principles of the pressure sensor 140 , the solenoid valve 150 , and the ultrasonic flow sensor 160 are clear to those skilled in the art and will not be described in detail herein.

[0026] The above description is only an embodiment of the present application and is not intended to limit the scope of protection of the present application. For those skilled in the art, the present application may have various changes and variations. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application should be included in the scope of protection of the present application. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.

Claims

1. A gas over-current automatic cut-off device, characterized in that: The invention comprises a first protective cover (110), a second protective cover (120), a gas pipeline (130), a pressure sensor (140), a solenoid valve (150), an ultrasonic flow sensor (160), a transverse plate (191), a pull bar (192), a spring (193) and a plug rod (194); the first protective cover (110) and the second protective cover (120) are both mounted on the gas pipeline (130); and the first protective cover (110) is hinged on the second protective cover (120); The pressure sensor (140), the solenoid valve (150) and the ultrasonic flow sensor (160) are all arranged on the gas pipeline (130); the pressure sensor (140) and the ultrasonic flow sensor (160) are both electrically connected to the solenoid valve (150); the cross plate (191) is fixed on the outer wall of the second protective cover (120); the spring (193) is fixed between the cross plate (191) and the pull rod (192); one end of the insertion rod (194) is fixed on the pull rod (192); the insertion rod (194) passes through the spring (193); and the insertion rod (194) also passes through the first protective cover (110) and the second protective cover (120).

2. A gas over-flow automatic cut-off device according to claim 1, characterized in that: It also includes a connecting flange (170), wherein the connecting flange (170) is fixed to the end of the gas pipeline (130).

3. A gas over-flow automatic cut-off device according to claim 1, characterized in that: It also includes a sealing gasket (180), wherein the sealing gasket (180) is disposed between the first protective cover (110) and the second protective cover (120).

4. A gas over-flow automatic cut-off device according to claim 1, characterized in that: It also includes a sealing ring (190), which is sleeved on the gas pipeline (130). The sealing ring (190) is also arranged on the first protective cover (110) and the second protective cover (120).

5. A gas over-flow automatic cut-off device according to claim 1, characterized in that: A plurality of the springs (193) are provided, and the plurality of the springs (193) are linearly and equidistantly arranged on the transverse plate (191).

6. A gas over-flow automatic cut-off device according to claim 1, characterized in that: The first protective cover (110) and the second protective cover (120) are both provided with a through hole (195), and the insertion rod (194) passes through the through hole (195).

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