Valve gas leakage early warning device

Abstract

The utility model provides a valve gas leakage early warning device, and mainly relates to the field of gas pipeline leakage prevention equipment. A valve gas leakage early warning device comprises a sealing rubber ring and a shell. The gas valve has the advantages that the sealing rubber ring and the shell are arranged, the sealing ring is arranged on the periphery of the gas valve and used for preventing or delaying leakage and escape of gas leaked from a flange plate of the valve, a certain protection effect on personnel safety is achieved, the cavity is formed in the shell, and the gas concentration detector is arranged in the cavity, so that the safety of personnel is improved. The gas leakage amount and the leakage position are determined by arranging the gas pressure detector, and the gas pressure detector is arranged to warn a worker to handle in time, so that further leakage is prevented.

Description

Technical Field

[0001] The utility model mainly relates to the field of gas pipeline anti-leakage equipment, in particular to a valve gas leakage early warning device. Background Art

[0002] Most of the gas valve boxes installed in workshops and factories are used to transmit harmful gases, and most of the installed gas pipelines are toxic and harmful gases. If these gases escape into the air, they will pose a major threat to the life safety of the workers in the workshop. At present, these harmful gases are mainly monitored and detected by component detection. Specifically, detection points are established in the exhaust pipes above the gas valve box and in the environment. If the harmful gas components are detected to exceed the threshold, an alarm will be issued.

[0003] The gas components detected by the existing technology are all real-time, and the gas concentration is converted into electrical signals, and an alarm will be issued only after reaching a certain threshold. These electrical signals will not be accumulated, so if a long-term small-flow leakage occurs below the threshold, the alarm will not be triggered. In this case, there are certain safety hazards, and before the alarm, the gas components have already escaped into the air, polluting the air and affecting people. Therefore, it is necessary to provide a new gas leakage detection method to solve the above problems. Utility Model Content

[0004] In order to address the deficiencies in the prior art, the utility model provides a valve gas leakage warning device, the main effect of which is that a sealing rubber ring and a sealing shell are arranged around the flange interface of the valve that is prone to leakage, so as to further protect the middle interface part of the flange, and when the valve flange leaks, the speed of gas escape can be prevented or slowed down, and a gas detection device and an air pressure detection device are arranged inside the cavity of the shell, which can respond to the changes in gas concentration and air pressure inside the cavity when the valve flange leaks, and warn the staff to take corresponding measures for the flange to avoid further losses caused by the leakage.

[0005] In order to achieve the above purpose, the utility model is implemented through the following technical solutions:

[0006] A valve gas leakage warning device comprises a sealing rubber ring and a shell. The outer shell is sleeved on the outer surface of the sealing rubber ring, a plurality of gas concentration sensors are fixedly arranged around the inner periphery of the shell, and an air pressure sensor is fixedly arranged inside the shell.

[0007] Furthermore, the shell is divided into two parts, one end of the upper and lower parts of the shell is provided with a hinge, and the upper and lower parts of the shell are hinged by the hinge.

[0008] Furthermore, it is characterized in that rubber pads are fixedly provided on the flat surface parts at both ends of the upper and lower parts of the shell.

[0009] Furthermore, a fixing plate is fixedly provided at one end of the upper and lower parts of the shell, and a bolt hole is provided on the fixing plate.

[0010] Furthermore, threaded seats are fixedly provided on the upper and lower sides of the outer shell, threaded holes are provided on the threaded seats, and threaded rods can be provided inside the threaded holes to be threadedly connected thereto.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] 1. By further sealing and reinforcing the area around the flange interface, when leakage occurs at the flange interface, the speed at which harmful gases escape into the air can be prevented or slowed down, thus providing further protection for the staff.

[0013] 2. By setting up a cavity, a gas detector and a pressure detector inside the reinforced shell, the gas pressure and gas concentration can be detected when the valve flange leaks gas, and the staff can be alarmed to notify them to take further action.

[0014] 3. By setting up a hinged structure and a detachable handle, it is convenient for personnel to disassemble and assemble, reducing their work intensity. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the utility model;

[0016] Figure 2 It is a schematic diagram of the structure of the utility model;

[0017] Figure 3 It is a schematic diagram of the structure of the utility model;

[0018] Figure 4 The utility model is a schematic diagram of a cross-sectional structure.

[0019] The numbers shown in the accompanying drawings are: 1. sealing rubber ring; 2. housing; 3. gas concentration sensor; 4. air pressure sensor; 5. hinge; 6. rubber pad; 7. fixing plate; 8. bolt hole; 9. threaded seat; 10. threaded hole; 11. threaded rod. DETAILED DESCRIPTION

[0020] The utility model is further described in conjunction with the accompanying drawings and specific embodiments. It should be understood that these embodiments are only used to illustrate the utility model and are not used to limit the scope of the utility model. In addition, it should be understood that after reading the content taught by the utility model, those skilled in the art can make various changes or modifications to the utility model, and these equivalent forms also fall within the scope defined by this application.

[0021] Embodiment: A valve gas leakage warning device

[0022] like Figure 1-3 As shown, a valve gas leakage warning device, the specific structure of which includes:

[0023] A valve gas leakage warning device comprises a sealing rubber ring 1 and a shell 2. The sealing rubber ring 1 is sleeved on both sides of the valve flange and is used to cooperate with the shell 2 to further seal the valve flange so that it can prevent or delay its leakage when it leaks. The outer shell 2 is sleeved on the outside of the sealing rubber ring 1. The shape of the shell 2 matches the sealing rubber ring 1, and it is further reinforced and provided with a certain cavity. A plurality of gas concentration sensors 3 are fixedly arranged around the inside of the shell 2, and an air pressure sensor 4 is fixedly arranged inside the shell. Sensors are arranged in the cavity of the shell 2. The plurality of gas concentration sensors 3 are distributed around the inner cavity of the shell 2. When the valve flange leaks, the specific location of the leakage around the valve flange can be determined by analyzing the concentration difference detected by different sensors, so as to provide assistance to personnel for further processing. In addition, an air pressure sensor 4 is arranged, which can analyze and warn the change of air pressure inside the cavity of the shell 2 at the first time of leakage, so that the staff can handle it as soon as possible. The position of the leaking valve flange can also be determined at the fastest speed and specially processed.

[0024] The shell 2 is divided into two parts, the upper and lower parts of the shell 2 are an upper shell and a lower shell. A hinge 5 is fixed to the same end of the upper shell and the lower shell of the shell 2. The same end of the upper shell and the lower shell of the shell 2 is hinged by the hinge 5. The hinged form can make the installation and disassembly of the device shell more convenient.

[0025] Rubber pads 6 are fixedly provided on the two end plane parts of the upper shell and the lower shell of the shell 2. After the upper shell and the lower shell of the shell 2 are hinged and closed, the gap between the contact planes between the upper shell and the lower shell of the shell is sealed to prevent the gas inside the shell from escaping.

[0026] A fixing plate 7 is fixed to the non-hinged end of the upper shell and the lower shell of the shell 2. Bolt holes 8 are opened on the fixing plate 7. After the upper shell and the lower shell of the shell 2 are closed, the fixing plates are fixed with bolts to make the upper and lower parts of the shell 2 tightly combined to prevent gas leakage.

[0027] Threaded seats 9 are fixedly provided on the upper and lower sides of the outer shell 2. A threaded hole 10 is opened on the threaded seat 9. A threaded rod 11 can be provided inside the threaded hole 10 and threadedly connected thereto, so that the threaded rod 11 can be fixed on the outer shell 2, which is convenient for installation and disassembly of the device.

[0028] Working principle: When the device is in use, a sealing rubber ring 1 is preset on both sides of the valve flange, and a shell 2 corresponding to the shape of the sealing rubber ring 1 is set outside the sealing rubber ring 1. The shell 2 and the sealing rubber ring 1 are closely matched to prevent gas leakage inside the shell 2. The shell 2 is divided into an upper shell and a lower shell and hinged by a hinge 5, and a sealing device is set at the plane interface between the upper shell and the lower shell to prevent gas leakage in the gap between the upper shell and the lower shell of the shell 2. The hinged connection between the upper shell and the lower shell facilitates the installation and disassembly of the device. A plurality of gas seals are set inside the sealed cavity of the shell 2. The gas concentration sensor 3 can detect the gas concentration transported in the pipeline where the valve is located, and display its concentration by connecting to a display. The different concentrations detected by sensors at different positions can be used to determine the specific leakage position around the valve flange, which is convenient for the staff to deal with it at the first time. In addition, an air pressure sensor 4 is provided in the cavity inside the shell 2. When a leakage occurs in the valve flange, the air pressure of the cavity inside the shell 2 can be detected and an alarm can be connected to warn the staff at the first time to notify them to deal with it. A detachable handle is also provided on the periphery of the shell 2 to facilitate personnel to install and disassemble the device.

[0029] In the interpretation of the present invention, it should be noted that the terminology indicating the orientation is only for the convenience of description and understanding, and is not the only limitation on the installation position of the specific technical features, and does not exclude other possible installation methods.

[0030] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the utility model.

Claims

1. A valve gas leakage warning device, comprising a sealing rubber ring (1) and a housing (2), characterized in that: The outer shell (2) is sleeved on the outside of the sealing rubber ring (1), a plurality of gas concentration sensors (3) are fixedly arranged around the inside of the outer shell (2), and an air pressure sensor (4) is fixedly arranged inside the outer shell.

2. A valve gas leakage warning device according to claim 1, characterized in that: The outer shell (2) is divided into two equal parts, an upper part and an lower part. A hinge (5) is fixedly provided at one end of the upper and lower parts of the outer shell (2). The upper and lower parts of the outer shell (2) are hingedly connected via the hinge (5).

3. A valve gas leakage warning device according to claim 2, characterized in that: Rubber pads (6) are fixedly provided on the flat surface portions at both ends of the upper and lower parts of the housing (2).

4. A valve gas leakage warning device according to claim 1, characterized in that: A fixing plate (7) is fixedly provided at one end of the upper and lower parts of the housing (2), and a bolt hole (8) is provided on the fixing plate (7).

5. A valve gas leakage warning device according to claim 1, characterized in that: Threaded seats (9) are fixedly provided on the upper and lower exterior sides of the housing (2), a threaded hole (10) is provided on the threaded seat (9), and a threaded rod (11) may be provided inside the threaded hole (10) and threadedly connected thereto.

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