Emergency cut-off valve with non-return function

Abstract

The utility model relates to the technical field of valves, and discloses an emergency cut-off valve with a non-return function, which comprises an electric valve, a first pipe connecting port and a second pipe connecting port are respectively integrally formed on two sides of the electric valve, an electric actuator is mounted at the top of the electric valve, a handle is mounted on the electric actuator, and a valve clack is connected to the bottom of the electric actuator. The valve clack is controlled by the electric actuator, the valve clack is arranged in the electric valve, an automatic module is installed on one side of the top of the electric actuator, a temperature sensing switch is installed in the automatic module, the temperature sensing switch is electrically connected with the electric actuator, the electric actuator is controlled by the temperature sensing switch, and a check plate is rotationally connected into the electric valve. According to the emergency cut-off valve with the non-return function, by arranging the temperature sensing switch and the toxic gas sensing switch, the cut-off valve can be automatically controlled, the emergency cut-off valve adapts to different operation scenes, and safety is ensured; and the signal transmission module is arranged to receive a remote control signal, so that remote control of the emergency cut-off valve is realized, and the operation convenience is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to emergency shut-off valve equipment field, concretely relates to an emergency shut-off valve with check function. BACKGROUND

[0002] In industrial production, emergency shut-off valve is an important safety device, which is used to quickly cut off fluid flow when leakage, fire or other emergency occurs. However, the existing emergency shut-off valve often lacks effective check function, which leads to the possibility of backflow of fluid after cutting off, causing safety hazards. Therefore, it is necessary to design a new type of emergency shut-off valve which can quickly cut off fluid in emergency and prevent backflow of fluid.

[0003] The patent document with patent number CN219366901U was granted on July 18, 2023. It discloses an electromagnetic type gas emergency shut-off valve with check function. The application includes a valve body, a valve cover is arranged on the valve body, a cut-off valve seat is arranged in the middle of the valve cover, a valve stem is connected to the cut-off valve seat, a flow channel is arranged in the middle of the valve body, a gas outlet is arranged on one side of the flow channel, a check plate is rotatably connected at the position of the gas outlet, and the check plate is hinged to the valve body. It has the following beneficial effects: this electromagnetic type gas emergency shut-off valve with check function can achieve double cut-off sealing effect, solving the problem of sealing.

[0004] From the above application, it can be seen that the existing emergency shut-off valve lacks automatic cut-off function, and the automation and remote operation ability is weak. Therefore, an emergency shut-off valve with check function is proposed. Utility model content

[0005] In order to solve the above technical problems, the purpose of the utility model is to provide an emergency shut-off valve with check function, which can automatically control the cut-off valve by setting temperature sensing switch and toxic gas sensing switch, adapt to different operation scenes and ensure safety; by setting signal transmission module, receiving remote control signal, realizing remote control of emergency shut-off valve, improving the convenience of operation.

[0006] In order to achieve the above purpose, the utility model provides the following technical scheme:

[0007] An emergency cut-off valve with check function, comprising: an electric valve, first and second pipe ports are integrally formed on both sides of the electric valve, an electric actuator is installed on the top of the electric valve, a handle is installed on the electric actuator, a valve flap is connected to the bottom of the electric actuator, the valve flap is controlled by the electric actuator, the valve flap is in the inside of the electric valve, the valve flap is between the first pipe port and the second pipe port, an automation module is installed on one side of the top of the electric actuator, a temperature sensing switch is installed in the automation module, the temperature sensing switch is electrically connected with the electric actuator, the electric actuator is controlled by the temperature sensing switch, a check plate is rotatably connected in the electric valve, wherein the electric actuator adopts a high-precision stepping motor or a servo motor, the position accuracy and speed control of the valve flap during opening and closing are ensured, and the position information of the valve flap is fed back in real time through the built-in position sensor, so that accurate control is realized.

[0008] Preferably, a toxic gas sensing switch is further installed in the automation module, the toxic gas sensing switch is connected in series with the temperature sensing switch, and the electric actuator is controlled by the toxic gas sensing switch.

[0009] Preferably, a signal transmission module is further installed on the electric actuator, and a signal output end of the signal transmission module is connected with a signal receiving end of a remote control end.

[0010] Preferably, a signal output end of the remote control end is connected with a signal receiving end of the signal transmission module, and the electric actuator is controlled by the signal transmission module.

[0011] Preferably, a first sealing gasket is arranged on one side of the first pipe port close to the check plate.

[0012] Preferably, the check plate comprises a torsion spring, a support rod and a pressing plate, the support rod is rotatably connected with the inner wall of the electric valve through the torsion spring, and the support rod is connected with the pressing plate to tightly contact the first pipe port.

[0013] Preferably, a second sealing gasket is arranged on one side of the pressing plate close to the first pipe port.

[0014] Preferably, a limiting block for limiting rotation of the handle is installed on the electric actuator.

[0015] Compared with the prior art, the utility model has the advantages that:

[0016] The utility model provides a kind of emergency stop valve with check function, by setting temperature sensing switch and toxic gas sensing switch, can independently control cut-off valve, adapt to different operating scenarios and ensure safety;By setting signal transmission module, receive remote control signal, realize the remote control of emergency stop valve, improve the convenience of operation;By setting multiple sealing washer, enhance sealing performance, ensure the sealing of check plate, reduce potential leakage.Combination of autonomous control and remote control, can rapidly cut off fluid flow in emergency, prevent accident expansion.At the same time, check function effectively prevents fluid backflow, further improves safety.The application of high-precision control, high-sensitivity sensing switch and senior encryption technology ensures the long-term stable operation of emergency stop valve in complex and changeable environment and the safety of data transmission.The design of remote control end makes operator not need to be on the scene to carry out valve control and state monitoring, greatly improves the convenience of operation. BRIEF DESCRIPTION OF DRAWINGS

[0017] One or more embodiments are illustrated by way of example in the figures that form a part of this patent document. These illustrative drawings are not necessarily drawn to scale, and the illustrations provided are selected and drawn in such a manner so as to provide clear and concise illustrations of the embodiments of the present application. An overall appreciation of the application can be gained by reference to the drawings.

[0018] Figure 1 It is a three-dimensional schematic view of the emergency stop valve with check function of the utility model;

[0019] Figure 2 It is a front view cross-sectional schematic view of the emergency stop valve with check function of the utility model;

[0020] Figure 3 It is Figure 2 A part of the enlarged view of

[0021] In the drawing: 10, electric valve;11, first connecting pipe opening;111, first sealing washer;12, second connecting pipe opening;20, electric actuator;21, valve flap;22, handle;23, automation module;24, limit block;30, check plate;31, torsional spring;32, support rod;33, pressing plate;34, second sealing washer. DETAILED DESCRIPTION

[0022] To make the purpose, technical scheme and advantages of the utility model more clear, below will combine the drawings to the each embodiment of the utility model detailedly elaborated. However, the ordinary skilled in the art can understand that in each embodiment of the utility model, in order to make reader better understand the present application and proposed many technical details. However, even if there is no these technical details and based on the various changes and modifications of each embodiment, the technical scheme claimed by each claim of the present application can be realized.

[0023] Referring to Figures 1-3 An emergency shut-off valve with a check function, comprising: an electric valve 10, the electric valve 10 is integrally formed with a first connecting pipe port 11 and a second connecting pipe port 12 on both sides, respectively, an electric actuator 20 is installed on the top of the electric valve 10, preferably, the electric actuator adopts a high-precision stepper motor or a servo motor to ensure the position accuracy and speed control of the valve disc during opening and closing, and the position information of the valve disc can be fed back in real time through the built-in position sensor (such as an encoder) to realize accurate control. A handle 22 is installed on the electric actuator 20, a limiting block 24 for limiting the rotation of the handle 22 is installed on the electric actuator 20, a valve disc 21 is connected to the bottom of the electric actuator 20, the valve disc 21 is controlled by the electric actuator 20, the valve disc 21 is inside the electric valve 10, the valve disc 21 is between the first connecting pipe port 11 and the second connecting pipe port 12, an automation module 23 is installed on one side of the top of the electric actuator 20, a temperature sensing switch is installed in the automation module 23, the temperature sensing switch is electrically connected with the electric actuator 20, the electric actuator 20 is controlled by the temperature sensing switch, a check plate 30 is rotatably connected inside the electric valve 10, a toxic gas sensing switch is also installed in the automation module 23, the toxic gas sensing switch is connected in series with the temperature sensing switch, the electric actuator 20 is controlled by the toxic gas sensing switch, which can sense the overflow of dangerous gas in the air and close the valve in time, a signal transmission module is also installed on the electric actuator 20, the signal output end of the signal transmission module is signal connected with the signal receiving end of the remote control end, the signal output end of the remote control end is signal connected with the signal receiving end of the signal transmission module, the electric actuator 20 is controlled by the signal transmission module, which can prompt the opening and closing of the valve to the remote control end and remotely control the opening and closing of the valve, a first sealing washer 111 is arranged on one side of the first connecting pipe port 11 close to the check plate 30, the check plate 30 comprises a torsion spring 31, a support rod 32 and a pressing plate 33, the support rod 32 is rotatably connected with the inner wall of the electric valve 10 through the torsion spring 31, the support rod 32 connects the pressing plate close to the first connecting pipe port 11, a second sealing washer 34 is arranged on one side of the pressing plate 33 close to the first connecting pipe port 11 to enhance the sealing performance.

[0024] In the above technical solution, the electric actuator adopts a high-precision stepper motor or a servo motor to ensure the position accuracy and speed control of the valve disc during opening and closing, and the position information of the valve disc can be fed back in real time through the built-in position sensor (such as an encoder) to realize accurate control of the position and speed of the valve disc, ensuring that the valve can be quickly and accurately closed in emergency shutdown to avoid fluid leakage. At the same time, when partial opening or flow adjustment is needed, fine adjustment can also be realized to meet different working condition requirements.

[0025] Preferably, in some embodiments, the check plate adopts a combination structure of torsion spring and support rod, and the automatic closing function is realized by the elastic force of the torsion spring; a plurality of sealing washers (such as fluororubber, polytetrafluoroethylene, etc.) are arranged between the pressing plate and the first connecting pipe port to enhance the sealing performance. This structure design enables the check plate to close quickly when the fluid pressure decreases, effectively preventing fluid backflow. The application of multiple sealing washers further improves the sealing effect and reduces the leakage problem caused by poor sealing.

[0026] Preferably, in some embodiments, the temperature sensing switch adopts a high-sensitivity thermistor or thermocouple, which can quickly respond to changes in environmental temperature; the toxic gas sensing switch adopts a high-selectivity gas sensor, which can accurately identify and measure the concentration of specific toxic gases. The high-sensitivity sensing switch can detect potential dangerous situations such as abnormal temperature rise or toxic gas leakage in advance, providing sufficient response time for emergency shutdown. At the same time, high reliability ensures long-term stable operation in harsh environments, reducing the risk of false alarms and missed reports.

[0027] Among them, the signal transmission module can choose a module that supports wired or wireless transmission, which can be selected according to the specific application scene, preferably using an industrial-level communication protocol (such as Modbus TCP / IP, OPC UA, etc.), to ensure the stability and reliability of data transmission. At the same time, the transmission data is encrypted using advanced encryption standards (such as AES-256) to prevent data leakage and tampering. The use of industrial-level communication protocols ensures the real-time and accuracy of data transmission, suitable for complex and variable industrial environments. The application of encryption technology further improves the security of data transmission, ensuring the integrity and confidentiality of remote control instructions.

[0028] Preferably, the remote control end adopts a dedicated industrial control computer, PLC (Programmable Logic Controller), human-machine interface (HMI) or smart phone, tablet computer and other mobile devices, which can display the opening and closing state of the valve, temperature, toxic gas concentration and other key parameters in real time. At the same time, it supports the sending and receiving of remote control instructions, as well as the query and export functions of historical data. Therefore, the operator can easily master the real-time state of the valve and respond quickly. The remote control function improves the convenience of operation and reduces the risk of on-site operation.

[0029] As shown in Figures 1-3 , the check plate is used to automatically close when the fluid pressure decreases to prevent fluid backflow, the temperature sensing switch and the toxic gas sensing switch monitor the temperature and the content of toxic gases in the air, and the valve is closed when the threshold is exceeded, the signal transmission module is used to check the valve state, and the valve is remotely cut off.

[0030] In conclusion, the emergency cut-off valve with the non-return function has the advantages that the temperature sensing switch and the toxic gas sensing switch are arranged, the cut-off valve can be automatically controlled, different operation scenes can be adapted and safety can be ensured, the signal transmission module is arranged, remote control signals are received, remote control of the emergency cut-off valve is realized, and the convenience of operation is improved, and the sealing performance is enhanced by arranging multiple sealing gaskets, the sealing of the non-return plate is ensured to be tight, and potential leakage is reduced.

[0031] Those skilled in the art can understand that the above-mentioned embodiments are specific examples for realizing the utility model, and in actual application, various changes can be made in form and details without departing from the spirit and scope of the utility model.

Claims

1. An emergency shut-off valve with a check function, characterized in that: include: An electric valve (10), wherein a first pipe connection port (11) and a second pipe connection port (12) are integrally formed on both sides of the electric valve (10), an electric actuator (20) is installed on the top of the electric valve (10), a handle (22) is installed on the electric actuator (20), a valve flap (21) is connected to the bottom of the electric actuator (20), the valve flap (21) is controlled by the electric actuator (20), the valve flap (21) is inside the electric valve (10), the valve flap (21) is between the first pipe connection port (11) and the second pipe connection port (12), and the electric actuator An automation module (23) is installed on one side of the top of the actuator (20), a temperature sensing switch is installed in the automation module (23), the temperature sensing switch is electrically connected to the electric actuator (20), the electric actuator (20) is controlled by the temperature sensing switch, and a check plate (30) is rotatably connected inside the electric valve (10); wherein the electric actuator (20) adopts a high-precision stepper motor or servo motor to ensure the position accuracy and speed control of the valve disc during the opening and closing process, and the position information of the valve disc is fed back in real time through the built-in position sensor to achieve precise control.

2. The emergency shut-off valve with a check function according to claim 1, characterized in that: A toxic gas sensing switch is also installed in the automation module (23). The toxic gas sensing switch is connected in parallel with the temperature sensing switch, and the electric actuator (20) is controlled by the toxic gas sensing switch.

3. The emergency shut-off valve with a check function according to claim 1, characterized in that: A signal transmission module is also installed on the electric actuator (20), and the signal output end of the signal transmission module is connected to the signal receiving end of the remote control end.

4. The emergency shut-off valve with a check function according to claim 3, characterized in that: The signal output end of the remote control end is signal-connected to the signal receiving end of the signal transmission module, and the electric actuator (20) is controlled by the signal transmission module.

5. The emergency shut-off valve with a check function according to claim 1, characterized in that: A first sealing gasket (111) is provided on one side of the first pipe connection port (11) close to the check plate (30).

6. The emergency shut-off valve with a check function according to claim 1, characterized in that: The check plate (30) comprises a torsion spring (31), a support rod (32) and a pressure plate (33); the support rod (32) is rotatably connected to the inner wall of the electric valve (10) via the torsion spring (31); and the support rod (32) is connected to the pressure plate and is in close contact with the first pipe port (11).

7. The emergency shut-off valve with a check function according to claim 6, characterized in that: A second sealing gasket (34) is provided on one side of the pressure plate (33) close to the first pipe connection port (11).

8. An emergency shut-off valve with a check function according to any one of claims 1 to 7, characterized in that: A limit block (24) for limiting the rotation of the handle (22) is installed on the electric actuator (20).

Images