A cut-off valve leakage alarm device and a tobacco processing system

Abstract

The application belongs to the technical field of tobacco processing, and discloses a cut-off valve leakage alarm device and a tobacco processing system. The device comprises a valve detection module for detecting the expected opening and closing state of a liquid cut-off valve; and a main control module for detecting the running state of a steam device to control an alarm module to send a first alarm signal when the running state is a shutdown state and the expected opening and closing state is an open state. By monitoring the expected opening and closing state of the liquid cut-off valve and the running state of the steam device, and controlling the alarm module to send the first alarm signal when the running state is the shutdown state and the expected opening and closing state is the open state, the precise detection of the leakage of the liquid cut-off valve is realized, and timely alarm is given when leakage occurs.

Description

Technical Field

[0001] This application relates to the field of tobacco processing technology, and in particular to a shut-off valve leakage alarm device and a tobacco processing system. Background Technology

[0002] In the cigarette processing industry, the main energy source for the main equipment is saturated steam. After entering the cigarette-making workshop from the power plant, the saturated steam is controlled by a manual shut-off valve, which serves as the main valve for the main equipment requiring steam. However, because the main steam shut-off valve requires considerable force to open and close completely, it may not close tightly. Furthermore, due to wear and tear on the valve core, leaks may still occur even after it is fully closed. This not only wastes energy but also poses a risk of secondary damage to the equipment in the energy pipeline.

[0003] Therefore, existing technologies still need to be improved and enhanced. Summary of the Invention

[0004] This application provides a gate valve leakage alarm device and a tobacco processing system, which aims to solve the problem of easy leakage in manual gate valves in the prior art.

[0005] In a first aspect, embodiments of this application provide a shut-off valve leakage alarm device, comprising:

[0006] The system includes a data monitoring module, a valve detection module, a main control module, and an alarm module. The valve detection module is connected to the liquid shut-off valve and the main control module. The main control module is also connected to the steam equipment, the data monitoring module, and the alarm module. The data monitoring module is also connected to the steam equipment and the liquid shut-off valve.

[0007] The valve detection module is used to detect the expected opening and closing state of the liquid shut-off valve.

[0008] The main control module is used to detect the operating status of the steam equipment, and to control the alarm module to issue a first alarm signal when the operating status is a shutdown state and the expected opening / closing state is an open state.

[0009] In one embodiment, the data monitoring module is used to detect the target fluid at the inlet and outlet of the liquid shut-off valve to obtain fluid state data.

[0010] The main control module is used to calculate the actual opening and closing size of the liquid shut-off valve based on the fluid state data at the inlet and outlet.

[0011] The alarm module is also used to issue a second alarm signal when the operating state is the shutdown state and the actual opening and closing size is not greater than a preset minimum threshold.

[0012] In one embodiment, the shut-off valve leakage alarm device further includes: a fluid control module; the fluid control module is connected to the data monitoring module and the main control module;

[0013] The fluid control module is used to control the size of the target fluid at the outlet of the liquid shut-off valve according to the fluid control command transmitted by the main control module.

[0014] In one embodiment, the data monitoring module includes: a first data monitoring unit and a second data monitoring unit; the main control module and the liquid shut-off valve are respectively connected to the first data monitoring unit and the second data monitoring unit;

[0015] The first data monitoring unit is used to detect the target fluid at the inlet of the liquid shut-off valve and obtain first fluid state data; the second data monitoring unit is used to detect the target fluid at the outlet of the liquid shut-off valve and obtain second fluid state data, so that the main control module can determine the actual opening and closing size of the liquid shut-off valve based on the absolute difference between the first fluid state data and the second fluid state data.

[0016] In one embodiment, the first data monitoring unit includes: a first temperature sensor or a first pressure sensor; the first temperature sensor or the first pressure sensor is disposed at the inlet of the liquid shut-off valve;

[0017] The second data monitoring unit includes: a second temperature sensor or a second pressure sensor; the second temperature sensor or the second pressure sensor is disposed at the outlet of the liquid shut-off valve;

[0018] The first data monitoring unit and the second data monitoring unit are sensors of the same type.

[0019] In one embodiment, the alarm module is further configured to issue a first alarm signal when the operating state is a shutdown state, the fluid control module is a closed state, and the expected opening / closing state is an open state;

[0020] The alarm module is also used to issue a second alarm signal when the operating state is the shutdown state, the fluid control module is the off state, and the actual opening and closing size is not greater than a preset minimum threshold.

[0021] In one embodiment, the fluid control module includes: a proportional regulating valve; the proportional regulating valve is disposed after the second data monitoring unit in the data monitoring module; the proportional regulating valve is used to control the size of its own valve according to the fluid control command, so as to control the size of the target fluid at the outlet of the liquid shut-off valve.

[0022] In one embodiment, the valve detection module includes a valve detection switch disposed on the liquid shut-off valve; the alarm module includes an audible and visual alarm.

[0023] In one embodiment, the first alarm signal is an alarm signal emitted by the alarm module with yellow light and a first frequency; the second alarm signal is an alarm signal emitted by the alarm module with red light and a second frequency; wherein the second frequency is greater than the first frequency.

[0024] Secondly, embodiments of this application provide a tobacco processing system, including a steaming device, a liquid shut-off valve, and a shut-off valve leakage alarm device as described above; the shut-off valve leakage alarm device is connected to the liquid shut-off valve and the steaming device respectively.

[0025] Compared with the prior art, the present application provides a shut-off valve leakage alarm device and a tobacco processing system. The device monitors the expected opening and closing state of the liquid shut-off valve and the operating state of the steam equipment. When the operating state is a shutdown state and the expected opening and closing state is an open state, the device controls the alarm module to issue a first alarm signal, thereby achieving accurate detection of leakage of the liquid shut-off valve and timely alarming when leakage occurs. Attached Figure Description

[0026] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 A structural block diagram of the shut-off valve leakage alarm device provided in this application;

[0028] Figure 2 A schematic diagram of a gate valve leakage alarm device provided in this application;

[0029] Figure 3 This is another structural schematic diagram of the shut-off valve leakage alarm device provided in this application.

[0030] Reference numerals: 1-Stop valve leakage alarm device; 10-Data monitoring module; 11-First data monitoring unit; 12-Second data monitoring unit; 20-Liquid stop valve; 30-Valve detection module; 40-Main control module; 50-Alarm module; 60-Steam equipment; 70-Fluid control module. Detailed Implementation

[0031] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments.

[0032] The components of the embodiments of this application described and illustrated in the accompanying drawings can be arranged and designed in a variety of different configurations. Therefore, the following detailed description of the embodiments of this application provided in the drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0033] In the following text, the terms "comprising," "having," and their cognates, which may be used in various embodiments of this application, are intended only to indicate a particular feature, number, step, operation, element, component, or combination thereof, and should not be construed as primarily excluding the presence of one or more other features, numbers, steps, operations, elements, components, or combinations thereof, or adding the possibility of one or more combinations thereof. Furthermore, the terms "first," "second," "third," etc., are used only for distinguishing descriptions and should not be construed as indicating or implying relative importance.

[0034] Unless otherwise specified, all terms used herein (including technical and scientific terms) shall have the same meaning as commonly understood by one of ordinary skill in the art to which the various embodiments of this application pertain. Terms (such as those defined in commonly used dictionaries) shall be interpreted as having the same meaning as in their contextual meaning in the relevant technical field and shall not be construed as having an idealized or overly formal meaning, unless clearly defined in the various embodiments of this application.

[0035] This application provides a gate valve leakage alarm device and a tobacco processing system. The gate valve leakage alarm device detects the expected opening / closing state of the liquid gate valve and the operating status of the steam equipment. When the operating status is stopped and the expected opening / closing state is open, the alarm module issues a first alarm signal, achieving accurate and rapid leakage detection of the liquid gate valve and timely leakage warning, effectively avoiding energy waste.

[0036] The design scheme of the gate valve leakage alarm device is described below through some specific embodiments.

[0037] Please see Figure 1 This application provides a shut-off valve leakage alarm device 1, comprising:

[0038] The system includes a data monitoring module 10, a valve detection module 30, a main control module 40, and an alarm module 50. The valve detection module 30 is connected to the liquid shut-off valve 20 and the main control module 40, respectively. The main control module 40 is also connected to the steam equipment 60, the data monitoring module 10, and the alarm module 50, respectively. The data monitoring module 10 is also connected to the steam equipment 60 and the liquid shut-off valve 20, respectively.

[0039] The valve detection module 30 is used to detect the expected opening and closing state of the liquid shut-off valve 20.

[0040] The main control module 40 is used to detect the operating status of the steam equipment 60, so as to control the alarm module 50 to issue a first alarm signal when the operating status is the shutdown state and the expected opening / closing state is the open state.

[0041] The first alarm signal is a yellow light and a first frequency alarm signal emitted by alarm module 50. During cigarette processing in the tobacco industry, if steam equipment 60 starts or stops, the liquid shut-off valve 20 will be opened or closed synchronously (manually or automatically), meaning the operating state of liquid shut-off valve 20 is synchronized with the operating state of steam equipment 60. The main control module 40 includes a PLC (Programmable Logic Controller), a PID (Proportional-Integral-Derivative) controller, or an industrial computer, etc. The main control module 40 receives signals from other modules, performs calculations according to preset control logic, and outputs control signals to the alarm mechanism (such as alarm module 50). The main control module 40's functions include: centralized control and logical judgment of the entire system's temperature, pressure, valve status, etc.; realization of automated operation, safety interlocking, remote monitoring; and support for alarm, recording, and data communication functions.

[0042] The liquid shut-off valve 20 can be a manually operated shut-off valve, a type of valve whose valve core is controlled by manual operation (such as a handwheel or handle). The flow of fluid is controlled by the contact or separation between the valve core and the valve seat. The functions of the liquid shut-off valve 20 are: to act as the main switch in the system, used to cut off or open fluid flow; to provide physical isolation during maintenance, repair, or emergencies; and to be used in conjunction with electric / pneumatic actuators as a backup or safety isolation measure.

[0043] As an example, the implementation process of the shut-off valve leakage alarm device 1 is as follows:

[0044] In the cigarette processing process of the tobacco industry, when saturated steam (i.e. target liquid) is generated by steam equipment 60 in the power workshop, it is transported through pipelines and enters the tobacco processing workshop through the shut-off valve leakage alarm device 1.

[0045] First, the valve detection module 30 detects the expected opening and closing state of the valve core of the liquid shut-off valve 20 to detect whether the liquid shut-off valve 20 is in a closed or open state.

[0046] Then, the main control module 40 monitors the operating status of the steam equipment 60 (including start-up or shutdown). If the operating status of the steam equipment 60 is detected to be in a shutdown state and the expected opening / closing state of the liquid shut-off valve 20 is in an open state, that is, the steam equipment 60 is stopped and the liquid shut-off valve 20 is closed, then the alarm module 50 issues the first alarm information, such as issuing a yellow light and an alarm signal of the first frequency.

[0047] It is understood that this application detects the operating status of the steam equipment 60 and the expected opening and closing status of the liquid shut-off valve 20, and issues a first alarm message when the operating status is detected as a shutdown state and the expected opening and closing status is an open state, thereby achieving accurate monitoring of the leakage of the target liquid on the liquid shut-off valve 20 and providing timely leakage reminders, effectively avoiding energy waste.

[0048] In one embodiment, the data monitoring module 10 is used to detect the target fluid at the inlet and outlet of the liquid shut-off valve 20 to obtain fluid state data.

[0049] The main control module 40 is used to determine the actual opening and closing size of the liquid shut-off valve 20 based on the fluid state data at the inlet and outlet.

[0050] The alarm module 50 is also used to issue a second alarm signal when the operating state is stopped and the actual opening and closing size is not greater than the preset minimum threshold.

[0051] The second alarm signal is an alarm signal with red light and a second frequency emitted by the alarm module 50; wherein the second frequency is greater than the first frequency.

[0052] For example, firstly, the data monitoring module 10 detects the saturated steam in the inlet and outlet of the liquid shut-off valve 20 to obtain fluid state data. This data is then used by the main control module 40 to determine the actual opening and closing size of the liquid shut-off valve 20 based on the fluid state data at both ends of the liquid shut-off valve 20, thereby detecting whether the liquid shut-off valve 20 is actually leaking.

[0053] Then, if it is determined that the steam equipment 60 is in a stopped state, and the actual opening and closing size is not greater than the preset minimum threshold, that is, the steam equipment 60 is stopped and the target data detected by the sensors before and after the liquid shut-off valve 20 are not significantly different (not greater than the preset minimum threshold), that is, the steam equipment 60 is stopped but the liquid shut-off valve 20 is not closed (theoretically it should be closed), then the alarm module 50 issues a second alarm signal, such as issuing a red light and a second frequency (greater than the first frequency) alarm signal. Since a leak may occur at this time, a more urgent light warning and buzzer alarm are issued.

[0054] However, except for the two conditions of the machine being in a stopped state and the expected opening / closing state being open, and the machine being in a stopped state and the actual opening / closing size not exceeding the preset minimum threshold, the alarm module will not issue an alarm signal, but will only emit a green light.

[0055] In one implementation, the data monitoring module 10 includes: a first data monitoring unit 11 and a second data monitoring unit 12; the main control module 40 and the liquid shut-off valve 20 are respectively connected to the first data monitoring unit 11 and the second data monitoring unit 12.

[0056] The first data monitoring unit 11 is used to detect the target fluid at the inlet of the liquid shut-off valve 20 and obtain the first fluid state data; the second data monitoring unit 12 is used to detect the target fluid at the outlet of the liquid shut-off valve 20 and obtain the second fluid state data, so that the main control module 40 can determine the actual opening and closing size of the liquid shut-off valve 20 based on the absolute difference between the first fluid state data and the second fluid state data.

[0057] Exemplarily, after the target liquid is generated from the steam device 60, it is transported through a pipeline, passing successively through the first data monitoring unit 11, the liquid shut-off valve 20, and the second data monitoring unit 12. That is, the first data monitoring unit 11 is located at the inlet of the liquid shut-off valve 20, and the second data monitoring unit 12 is located at the outlet of the liquid shut-off valve 20. The first data monitoring unit 11 detects the target liquid in the inlet and outlet, and obtains the first fluid state data and the second fluid state data, so that the main control module 40 can determine the actual opening and closing size of the liquid shut-off valve 20 based on the absolute difference between the second fluid state data and the second fluid state data (for example, the determined value after subtracting the first fluid state data from the second fluid state data).

[0058] It is understandable that by monitoring the inlet and outlet of the liquid shut-off valve 20 separately, the difference between the two can be used to calculate whether there is a leak, thereby accurately and simply determining whether there is a leak in the liquid shut-off valve 20.

[0059] In one implementation method, see also Figure 2 The first data monitoring unit 11 includes a first temperature sensor or a first pressure sensor; the first temperature sensor or the first pressure sensor is installed at the inlet of the liquid shut-off valve 20.

[0060] The second data monitoring unit 12 includes a second temperature sensor or a second pressure sensor; the second temperature sensor or the second pressure sensor is located at the outlet of the liquid shut-off valve 20.

[0061] The first data monitoring unit 11 and the second data monitoring unit 12 are of the same type of sensor. The temperature sensor is usually a resistance temperature detector (RTD) (such as PT100) or a thermocouple, which measures the change in resistance or potential caused by temperature change and converts it into a temperature signal output. The functions of the temperature sensor are: to monitor the fluid temperature before it enters the shut-off valve in real time; to determine whether the system is within the normal operating temperature range; and to provide feedback to the control system under high or low temperature conditions to prevent abnormal operating conditions.

[0062] Exemplary, the first data monitoring unit 11 and the second data monitoring unit 12 can both be temperature sensors or pressure sensors (i.e., sensors of the same type). The temperature sensor is used to measure the temperature of the target fluid in the conduits before and after the liquid shut-off valve 20 to calculate the temperature change upstream and downstream of the liquid shut-off valve 20, thereby helping to determine whether the liquid shut-off valve 20 is leaking or not fully closed. Similarly, the pressure sensor is used to measure the hydraulic pressure of the target fluid in the conduits before and after the liquid shut-off valve 20 to calculate the pressure difference change upstream and downstream of the liquid shut-off valve 20, thereby indirectly determining whether it is fully closed.

[0063] The greater the absolute difference between the first fluid state data and the second fluid state data, the less leakage the liquid shut-off valve 20 exhibits. In other words, the greater the absolute value of the temperature or pressure change difference between the first data monitoring unit 11 and the second data monitoring unit 12, the less leakage the liquid shut-off valve 20 exhibits. Furthermore, since the pressure of a liquid is inversely proportional to its contact area at the same density, when the inlet area and depth are the same, a larger outlet (i.e., a larger contact area) results in a smaller pressure value, thus a smaller absolute pressure difference.

[0064] It is understandable that by measuring the changes in temperature or pressure before and after the liquid shut-off valve 20, it can be determined whether the liquid shut-off valve 20 is closed properly, thereby improving the accuracy and speed of leak detection.

[0065] In one implementation, the valve detection module 30 includes a valve detection switch disposed on the liquid shut-off valve 20; the alarm module 50 includes an audible and visual alarm.

[0066] The alarm module 50 is triggered by the signal sent by the controller to emit audible and visual or level signals to indicate abnormal conditions. This enables it to issue warnings when the system is abnormal (such as overheating, leakage, or valves not being closed properly), reminding operators to handle the situation in a timely manner, and supporting remote alarm signal output for centralized monitoring.

[0067] As an example, the valve detection switch can be a proximity switch (including inductive, capacitive, and magnetic types), installed on the liquid shut-off valve 20, to detect whether the manual shut-off valve handwheel has been rotated to the correct position (i.e., fully closed). The following example uses a magnetic proximity switch:

[0068] Install a metal block (or magnet) on the handwheel (or valve stem) of the shut-off valve and a proximity switch on the valve body or bracket; when the shut-off valve is rotated to the "closed position", the metal block (or magnet) is just close to the sensing area of ​​the proximity switch; when the proximity switch senses the metal block or magnet, it outputs a switching signal (such as high level or low level) to the controller (i.e., main control module 40).

[0069] Therefore, the setting of the valve detection switch can ensure that the shut-off valve is completely closed, prevent misoperation, provide feedback signals for the system control logic (detect the expected opening and closing state as one of the bases for the control alarm module 50 to issue an alarm), and improve the system safety and automation level.

[0070] The complete closure of the liquid shut-off valve 20 can also be detected through mechanical limit switches or encoder feedback. In mechanical limit switch detection, a mechanical limit switch (such as a microswitch) can be installed at the end of the valve's closing stroke. When the valve is fully closed, the valve stem or drive mechanism touches the limit switch, generating an electrical signal feedback. Mechanical limit switch detection has advantages such as simple structure, low cost, and suitability for manual or semi-automatic systems. However, it also has disadvantages such as easy wear, low accuracy, and unsuitability for high-precision or high-frequency operations.

[0071] The audible and visual alarm emits preset colored lights and alarms with preset response frequencies based on different leakage conditions. The alarm module 50 can also be a combination of an alarm light and an alarm relay; the alarm light emits preset colored lights based on different leakage conditions, and the alarm relay emits alarms with preset response frequencies based on different leakage conditions.

[0072] In one implementation method, see further. Figure 1 The shut-off valve leakage alarm device 1 also includes: a fluid control module 70; the fluid control module 70 is connected to the data monitoring module 10 and the main control module 40.

[0073] The fluid control module 70 is used to control the size of the target fluid at the outlet of the liquid shut-off valve 20 according to the fluid control command transmitted by the main control module 40.

[0074] As an example, in another embodiment of this application, a fluid control module 70 is further connected after the second data monitoring unit 12.

[0075] When the main control module 40 transmits the fluid control command to the fluid control module 70, the fluid control module 70 controls the size of the target fluid at the outlet of the liquid shut-off valve 20, thereby achieving further control over the size of the target fluid in the pipeline and effectively preventing leakage of the target fluid at the liquid shut-off valve 20.

[0076] In one implementation, the alarm module 50 is further configured to issue a first alarm signal when the operating state is a shutdown state, the fluid control module 70 is a closed state, and the expected opening / closing state is an open state.

[0077] The alarm module 50 is also used to issue a second alarm signal when the operating state is stopped, the fluid control module 70 is closed, and the actual opening and closing size is not greater than a preset minimum threshold.

[0078] In another embodiment, as an example, the fluid control module 70 is still present after acquiring the operating status, actual opening / closing size, and expected opening / closing state of the steam device 60 and the fluid control module 70:

[0079] If it is determined that the operating state of the steam equipment 60 is stopped, the fluid control module 70 is closed, and the expected opening / closing state of the liquid shut-off valve 20 is open, that is, the steam equipment 60 is stopped, the liquid shut-off valve 20 and the fluid control module 70 are both closed, then the alarm module 50 issues the first alarm signal. Similarly, it issues an alarm signal with yellow light and the first frequency.

[0080] If it is determined that the steam equipment 60 is in a stopped state, the fluid control module 70 is in a closed state, and the actual opening and closing size is not greater than the preset minimum threshold, that is, the steam equipment 60 is stopped, the fluid control module 70 is closed, and the fluid state data detected by the sensors before and after the liquid shut-off valve 20 are not much different (not greater than the preset minimum threshold), that is, at this time the steam equipment 60 is stopped and the fluid control module 70 is closed, but the liquid shut-off valve 20 is not closed (theoretically it should be closed), then the alarm module 50 issues a second alarm signal, that is, a red light and a second frequency alarm signal.

[0081] However, if neither of the above two conditions is met, the alarm module 50 will not issue an alarm signal; similarly, it will only emit a green light.

[0082] In one implementation method, see also Figure 3 The fluid control module 70 includes: a proportional control valve; the proportional control valve is located after the second data monitoring unit 12 in the data monitoring module 10; the proportional control valve is used to control the size of its own valve according to the fluid control command, so as to control the size of the target fluid at the outlet of the liquid shut-off valve 20.

[0083] By way of example, in another embodiment, the fluid control module 70 may be a proportional control valve. The proportional control valve controls the flow rate or pressure of the fluid by adjusting the opening of the valve core, the opening of which is controlled by an electrical signal (e.g., 4~20mA, 0~10V), and has continuously adjustable characteristics.

[0084] The function of proportional control valves is to precisely adjust fluid flow or pressure according to control signals; to achieve closed-loop control of system parameters such as pressure, temperature, and liquid level; and to play an important role in industrial processes that require precise control.

[0085] In one embodiment, this application also provides a tobacco processing system, including a steaming device 60, a liquid shut-off valve 20, and a shut-off valve leakage alarm device 1 as described above; the shut-off valve leakage alarm device 1 is connected to the liquid shut-off valve 20 and the steaming device 60 respectively.

[0086] As an example, the specific functions of the shut-off valve leakage alarm device 1 have already been described in detail above, and will not be repeated here.

[0087] In the several embodiments provided in this application, it should be understood that the disclosed apparatus and methods can also be implemented in other ways. The apparatus embodiments described above are merely illustrative; for example, the flowcharts and block diagrams in the accompanying drawings illustrate the architecture, functionality, and operation of possible implementations of apparatus, methods, and computer program products according to various embodiments of this application. In this regard, each block in a flowchart or block diagram may represent a module, segment, or portion of code containing one or more executable instructions for implementing a specified logical function. It should also be noted that, as an alternative implementation, the functions marked in the blocks may occur in a different order than those marked in the drawings. For example, two consecutive blocks may actually be executed substantially in parallel, and they may sometimes be executed in reverse order, depending on the functions involved. It should also be noted that each block in a block diagram and / or flowchart, and combinations of blocks in block diagrams and / or flowcharts, can be implemented using a dedicated hardware-based system that performs the specified function or action, or using a combination of dedicated hardware and computer instructions.

[0088] In addition, the functional modules or units in the various embodiments of this application can be integrated together to form an independent part, or each module can exist independently, or two or more modules can be integrated to form an independent part.

[0089] If the aforementioned functions are implemented as software functional modules and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or a part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a smartphone, personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of this application.

[0090] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application.

Claims

1. A leakage alarm device for a shut-off valve, characterized in that, include: The system includes a data monitoring module, a valve detection module, a main control module, and an alarm module. The valve detection module is connected to the liquid shut-off valve and the main control module. The main control module is also connected to the steam equipment, the data monitoring module, and the alarm module. The data monitoring module is also connected to the steam equipment and the liquid shut-off valve. The valve detection module is used to detect the expected opening and closing state of the liquid shut-off valve. The main control module is used to detect the operating status of the steam equipment, and to control the alarm module to issue a first alarm signal when the operating status is a shutdown state and the expected opening / closing state is an open state.

2. The shut-off valve leakage alarm device according to claim 1, characterized in that, The data monitoring module is used to detect the target fluid at the inlet and outlet of the liquid shut-off valve to obtain fluid state data. The main control module is used to calculate the actual opening and closing size of the liquid shut-off valve based on the fluid state data at the inlet and outlet. The alarm module is also used to issue a second alarm signal when the operating state is the shutdown state and the actual opening and closing size is not greater than a preset minimum threshold.

3. The shut-off valve leakage alarm device according to claim 2, characterized in that, Also includes: Fluid control module; the fluid control module is connected to the data monitoring module and the main control module; The fluid control module is used to control the size of the target fluid at the outlet of the liquid shut-off valve according to the fluid control command transmitted by the main control module.

4. The shut-off valve leakage alarm device according to claim 2, characterized in that, The data monitoring module includes: a first data monitoring unit and a second data monitoring unit; the main control module and the liquid shut-off valve are respectively connected to the first data monitoring unit and the second data monitoring unit; The first data monitoring unit is used to detect the target fluid at the inlet of the liquid shut-off valve and obtain first fluid state data; the second data monitoring unit is used to detect the target fluid at the outlet of the liquid shut-off valve and obtain second fluid state data, so that the main control module can determine the actual opening and closing size of the liquid shut-off valve based on the absolute difference between the first fluid state data and the second fluid state data.

5. The shut-off valve leakage alarm device according to claim 4, characterized in that, The first data monitoring unit includes: a first temperature sensor or a first pressure sensor; the first temperature sensor or the first pressure sensor is disposed at the inlet of the liquid shut-off valve; The second data monitoring unit includes: a second temperature sensor or a second pressure sensor; the second temperature sensor or the second pressure sensor is disposed at the outlet of the liquid shut-off valve; The first data monitoring unit and the second data monitoring unit are sensors of the same type.

6. The shut-off valve leakage alarm device according to claim 3, characterized in that, The alarm module is also used to issue a first alarm signal when the operating state is a shutdown state, the fluid control module is a closed state, and the expected opening / closing state is an open state; The alarm module is also used to issue a second alarm signal when the operating state is the shutdown state, the fluid control module is the off state, and the actual opening and closing size is not greater than a preset minimum threshold.

7. The shut-off valve leakage alarm device according to claim 3, characterized in that, The fluid control module includes: a proportional regulating valve; the proportional regulating valve is disposed after the second data monitoring unit in the data monitoring module; the proportional regulating valve is used to control the size of its own valve according to the fluid control command, so as to control the size of the target fluid at the outlet of the liquid shut-off valve.

8. The shut-off valve leakage alarm device according to claim 1, characterized in that, The valve detection module includes a valve detection switch, which is installed on the liquid shut-off valve; the alarm module includes an audible and visual alarm.

9. The shut-off valve leakage alarm device according to claim 6, characterized in that, The first alarm signal is an alarm signal emitted by the alarm module with yellow light and a first frequency; the second alarm signal is an alarm signal emitted by the alarm module with red light and a second frequency; wherein the second frequency is greater than the first frequency.

10. A tobacco processing system, characterized in that, The device includes a steam equipment, a liquid shut-off valve, and a shut-off valve leakage alarm device as described in any one of claims 1-9; the shut-off valve leakage alarm device is connected to the liquid shut-off valve and the steam equipment respectively.

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