Interlocking protection device and gas pipeline system

Abstract

The utility model discloses an interlocking protection device and a coal gas pipeline system, when a coal gas pipeline stops conveying coal gas, an electric butterfly valve at an inlet of the coal gas pipeline is firstly closed, and after the electric butterfly valve is closed, a coil of a first relay is electrified to close a loop through closing operation of a position switch; therefore, a control loop of the electric glasses valve can be operated, then the electric glasses valve can be operated, it is guaranteed that gas leakage does not occur when the glasses valve clamping device is loosened, correspondingly, when a gas pipeline conducts gas operation, the electric butterfly valve is closed in place, the control loop of the electric glasses valve can be operated to be powered on, and then the electric glasses valve can be operated. The safety accidents of gas leakage, fire explosion and gas poisoning are avoided in the process of opening the glasses valve clamping device for air entraining, the problem of gas leakage caused by direct operation of the electric glasses valve is effectively avoided when the valve group is not closed in place and misoperation occurs, and the operation safety is improved.

Description

Technical Field

[0001] The present application relates to the field of metallurgical control technology, and in particular to an interlocking protection device and a gas pipeline system. Background Art

[0002] Gas is the most common and main industrial product and raw material in the metallurgical industry. It is widely used in coking, ironmaking, steelmaking, energy, hot rolling, cold rolling and other units in the metallurgical industry. The gas used in the metallurgical industry mainly includes coke oven gas, blast furnace gas and converter gas. All kinds of gas contain carbon monoxide gas, which makes the gas flammable, explosive and poisonous. In the production process, unless otherwise specified, any gas equipment must maintain positive pressure operation. When it is difficult to maintain positive pressure when stopping production, the gas source should be reliably cut off and the internal gas should be blown clean. The gas supply stop operation is the most common operation process, but it is very easy to cause gas leakage and gas poisoning of personnel due to reasons such as lax valve closure and personnel misoperation. When the gas and air are mixed to the explosion limit, encountering a fire source will cause an explosion accident. In the current system, a partition device is usually installed on the gas pipeline before entering the workshop. The isolation device refers to a device that is installed on the gas pipeline to isolate the gas and has the function of reliably preventing the gas from leaking into the isolated area. Metallurgical enterprises currently use mostly combined isolation devices, which are generally composed of butterfly valves, gate valves, ball valves and other cutting devices and glasses valves, U / V-type water seals, etc. In order to reduce operational risks and reduce the labor intensity of employees, butterfly valves, gate valves, ball valves, glasses valves, etc. in gas pipelines are mostly changed to electric drives.

[0003] Metallurgical enterprises frequently shut down gas supply. In order to prevent gas poisoning caused by gas leakage due to lax valve closure and personnel misoperation during gas shutdown operations, Utility Model Content

[0004] In view of the defects existing in the prior art, the present application provides an interlocking protection device and a gas pipeline system to solve the problem of gas leakage in subsequent valve groups caused by improper closure or misoperation of the shut-off valve in the prior art.

[0005] The above-mentioned purpose of the present application is mainly achieved through the following technical solutions:

[0006] A interlocking protection device, the interlocking protection device includes a first control loop for connecting an electric butterfly valve, and a second control loop for connecting an electric spectacle valve. The first control loop includes a first relay and a position switch. The normally open contact of the first relay is connected between the zero line of the power supply and the normally open contact of the position switch, and the other end of the normally open contact of the position switch is connected to the live wire of the power supply. And the normally open contact of the first relay is connected to the second control loop, so that after the position switch is closed, the first relay is energized to form a closed loop to control the second control loop to operate the electric spectacle valve.

[0007] In an alternative embodiment, the second control loop includes a second relay, and the normally open contact of the second relay is connected between the zero line of the power supply and the normally open contact of the first relay.

[0008] In an alternative embodiment, the second control loop further includes a power switch, between the normally open contacts of the position switch, and the other end of the normally open contact of the position switch is connected to the normally open contact of the first relay.

[0009] In an alternative embodiment, the loop further includes a communication module, and the communication module is connected to the first relay and the position switch.

[0010] In an alternative embodiment, the communication module is connected to the second relay and the power switch.

[0011] In an alternative embodiment, the communication module includes a controller, and the controller is connected to the first relay and the position switch.

[0012] In an alternative embodiment, the controller is connected to the second relay and the power switch.

[0013] In an alternative embodiment, the voltage between the live wire and the zero line of the power supply is 220V.

[0014] In an alternative embodiment, multiple interlocking protection devices are provided and are used for being arranged at intervals in the gas pipeline system.

[0015] Based on the same inventive concept, the present application also provides a gas pipeline system, and the gas pipeline system includes the interlocking protection device as described above.

[0016] Compared with the prior art, the advantages of the present application are as follows:

[0017] In this application, the interlocking protection device includes a first control circuit for connecting an electric butterfly valve and a second control circuit for connecting an electric spectacle valve. The first control circuit includes a first relay and a position switch. The normally open contact of the first relay is connected between the zero line of the power supply and the normally open contact of the position switch, and the other end of the normally open contact of the position switch is connected to the live wire of the power supply. And the normally open contact of the first relay is connected to the second control circuit, so that after the position switch is closed, the first relay is energized to form a closed loop to control the second control circuit to operate the electric spectacle valve. When the gas pipeline stops the gas transmission operation, first close the electric butterfly valve at the inlet of the gas pipeline. After the electric butterfly valve is closed, through the closing operation of the position switch, the coil of the first relay is energized to form a closed loop, and then the control circuit of the electric spectacle valve can be operated, and then the electric spectacle valve can be operated, ensuring that there will be no gas leakage when the clamping device of the spectacle valve is loosened. Correspondingly, when the gas pipeline introduces gas, the electric butterfly valve must be closed in place before the control circuit of the electric spectacle valve can be energized and then the electric spectacle valve can be operated, ensuring that there will be no gas leakage during the process of opening the clamping device of the spectacle valve to introduce gas, thus avoiding safety accidents such as fire explosion and gas poisoning. When the valve group is not closed in place or there is a misoperation, it effectively avoids the gas leakage problem caused by directly operating the electric spectacle valve and improves the operation safety. Brief Description of the Drawings

[0018] In order to more clearly illustrate the technical solutions in the embodiments of this application, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of this application. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0019] Figure 1 It is a schematic diagram of the principle of the interlocking protection device provided by the embodiment of this application;

[0020] In the figure: 100, the first control circuit; 101, the first relay; 102, the position switch; 200, the second control circuit; 201, the second relay; 202, the power switch. Detailed Embodiments

[0021] The following further elaborates on the present utility model in conjunction with the drawings and specific embodiments. It should be noted here that the description of these embodiment modes is used to help understand the present utility model, but does not constitute a limitation to the present utility model. The specific structural and functional details disclosed herein are only used to describe the example embodiments of the present utility model. However, the present utility model can be embodied in many alternative forms and should not be construed as being limited to the embodiments described herein.

[0022] Such asFigure 1 As shown Figure 1 Figure 1 This is a schematic diagram of the principle of the interlocking protection device provided by the embodiment of the present application. An interlocking protection device includes a first control loop 100 for connecting an electric butterfly valve and a second control loop 200 for connecting an electric spectacle valve. The first control loop 100 includes a first relay 101 and a position switch 102. The normally open contact of the first relay 101 is connected between the zero line of the power supply and the normally open contact of the position switch 102, and the other end of the normally open contact of the position switch 102 is connected to the live wire of the power supply. And the normally open contact of the first relay 101 is connected to the second control loop 200, so that after the position switch 102 is closed, the first relay 101 is powered on and closed-loop to control the second control loop 200 to operate the electric spectacle valve.

[0023]

[0023] In an optional embodiment, the working principle of the interlocking protection device in the present application is as follows: The interlocking protection device includes a first control loop 100 for connecting an electric butterfly valve and a second control loop 200 for connecting an electric spectacle valve. The first control loop 100 includes a first relay 101 and a position switch 102. The normally open contact of the first relay 101 is connected between the zero line of the power supply and the normally open contact of the position switch 102, and the other end of the normally open contact of the position switch 102 is connected to the live wire of the power supply. And the normally open contact of the first relay 101 is connected to the second control loop 200, so that after the position switch 102 is closed, the first relay 101 is powered on and closed-loop to control the second control loop 200 to operate the electric spectacle valve. When the gas pipeline stops gas transmission operation, first close the electric butterfly valve at the inlet of the gas pipeline. After the electric butterfly valve is closed, through the closing operation of the position switch 102, the coil of the first relay 101 is powered on and closed-loop, and then the control loop of the electric spectacle valve can be operated, and then the electric spectacle valve can be operated, ensuring that there is no gas leakage when the clamping device of the spectacle valve is loosened. Correspondingly, when the gas pipeline introduces gas, the electric butterfly valve must be closed in place before the control loop of the electric spectacle valve can be powered on, and then the electric spectacle valve can be operated, ensuring that there is no gas leakage during the process of opening the clamping device of the spectacle valve to introduce gas, thus avoiding safety accidents such as fire explosion and gas poisoning. When the valve group is not closed in place or there is a misoperation, it effectively avoids the gas leakage problem caused by directly operating the electric spectacle valve and improves the operation safety.

[0024]

[0024] In an optional embodiment, the second control loop 200 includes a second relay 201, and the normally open contact of the second relay 201 is connected between the zero line of the power supply and the normally open contact of the first relay 101.

[0025] In an alternative embodiment, the second control loop 200 further includes a power switch 202, which is disposed between the normally open contacts of the position switch 102, and the other end of the normally open contacts of the position switch 102 is connected to the normally open contacts of the first relay 101.

[0026] In an alternative embodiment, the loop further includes a communication module, which is connected to the first relay 101 and the position switch 102.

[0027] In an alternative embodiment, the communication module is connected to the second relay 201 and the power switch 202.

[0028] In an alternative embodiment, the communication module includes a controller, which is connected to the first relay 101 and the position switch 102.

[0029] In an alternative embodiment, the controller is connected to the second relay 201 and the power switch 202.

[0030] During the control operation, the communication module can obtain the information of the first relay 101, the position switch 102, the second relay 201, and the power switch 202, and the controller can control the first relay 101, the position switch 102, the second relay 201, and the power switch 202 individually or in combination, so that the electric butterfly valve and the electric spectacle valve can cooperate to achieve stable and safe operation in different operation processes.

[0031] In an alternative embodiment, the voltage between the power live wire and the power neutral wire is 220V.

[0032] In an alternative embodiment, a plurality of interlock protection devices are provided and are used to be arranged at intervals in the gas pipeline system.

[0033] Based on the same inventive concept, the present application further provides a gas pipeline system, which includes the interlock protection device as described above. Specifically, in this gas pipeline system, except that the interlock protection device and related components adopt the technical solutions in the above embodiments, the structures, connection relationships, installation positions, etc. of other devices can refer to the relevant disclosures of the prior art and will not be elaborated here.

[0034] Since the electronic device introduced in this embodiment is the one adopted for implementing the information processing method in the embodiments of the present application, based on the information processing method introduced in the embodiments of the present application, those skilled in the art can understand the specific implementation manners and various variations of the electronic device in this embodiment. Therefore, the specific implementation of how this electronic device implements the method in the embodiments of the present application will not be described in detail herein. As long as the electronic device adopted by those skilled in the art to implement the information processing method in the embodiments of the present application falls within the scope of protection of the present application.

[0035] It should be understood that terms such as first and second are only used for distinguishing descriptions and cannot be construed as indicating or implying relative importance. Although terms such as first and second etc. may be used herein to describe various units, these units should not be limited by these terms. These terms are only used to distinguish one unit from another. For example, the first unit may be referred to as the second unit, and similarly, the second unit may be referred to as the first unit, without departing from the scope of the exemplary embodiments of the present invention.

[0036] It should be understood that the term "and / or" herein is merely a description of the association relationship between associated objects, indicating that three relationships may exist. For example, A and / or B may represent: A exists alone, B exists alone, and A and B exist simultaneously. The term " / and" herein describes another association relationship between associated objects, indicating that two relationships may exist. For example, A / and B may represent: A exists alone, and A and B exist alone. In addition, the character " / " herein generally represents that the associated objects before and after are in an "or" relationship.

[0037] It should be understood that in the description of the present invention, the orientation or positional relationship indicated by terms such as "upper", "vertical", "inner", "outer", etc. is the orientation or positional relationship when the disclosed product is in its usual placement, or the orientation or positional relationship commonly understood by those skilled in the art. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0038] In the description of the present invention, it should also be noted that unless otherwise clearly specified and limited, the terms "arranged", "installed", "connected" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be directly connected, or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0039] The terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments of the present utility model. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the terms "comprises", "comprising", "includes" and / or "including" when used herein specify the presence of the stated features, integers, steps, operations, units and / or components, and do not preclude the presence or addition of one or more other features, numbers, steps, operations, units, components and / or combinations thereof.

[0040] Specific details are provided in the following description to facilitate a complete understanding of the exemplary embodiments. However, those of ordinary skill in the art should understand that the exemplary embodiments may be implemented without these specific details. In other instances, well-known processes, structures and techniques have not been shown in unnecessary detail in order not to obscure the exemplary embodiments.

[0041] The above are only specific embodiments of the present application, enabling those skilled in the art to understand or implement the present application. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but rather to the broadest scope consistent with the principles and novel features claimed herein.

[0042] It should be noted that the information disclosed in the above background art section is only for enhancing the understanding of the background of the present disclosure, and thus may include information that does not constitute the prior art known to those of ordinary skill in the art.

Claims

1. A chain protection device, characterized in that, The interlock protection device includes a first control circuit for connecting an electric butterfly valve and a second control circuit for connecting an electric spectacle valve. The first control circuit includes a first relay and a position switch. The normally open contact of the first relay is connected between the zero line of the power supply and the normally open contact of the position switch, and the other end of the normally open contact of the position switch is connected to the live wire of the power supply. And the normally open contact of the first relay is connected to the second control circuit, so that after the position switch is closed, the first relay is energized to form a closed loop to control the second control circuit to operate the electric spectacle valve.

2. The chain protection device according to claim 1, characterized in that: The second control circuit includes a second relay, and the normally open contact of the second relay is connected between the zero line of the power supply and the normally open contact of the first relay.

3. The interlocking protection device according to claim 2, wherein: The second control circuit further includes a power switch, between the normally open contacts of the position switch, and the other end of the normally open contact of the position switch is connected to the normally open contact of the first relay.

4. The interlock protection device according to claim 3, characterized in that: The circuit further includes a communication module, and the communication module is connected to the first relay and the position switch.

5. The chain protection device according to claim 4, wherein: The communication module is connected to the second relay and the power switch.

6. The chain protection device according to claim 5, wherein: The communication module includes a controller, and the controller is connected to the first relay and the position switch.

7. The interlocking protection device according to claim 6, wherein: The controller is connected to the second relay and the power switch.

8. The chain protection device according to claim 1, characterized in that: The voltage between the live wire of the power supply and the zero line of the power supply is 220V.

9. The interlock protection device according to claim 1, wherein: A plurality of the interlock protection devices are provided and are used for being arranged at intervals in the gas pipeline system.

10. A gas pipeline system, characterized in that: The gas pipeline system includes the interlock protection device according to any one of claims 1-9.

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