Intelligent air valve temperature monitoring antifreeze system

Abstract

The present invention relates to the technical field of water pipeline systems, and discloses an intelligent air valve temperature monitoring and antifreeze system, comprising an air valve, a first temperature sensing device, and a control module; the air valve is installed in a valve well of a water pipeline; the sensing end of the first temperature sensing device is located inside the valve cavity of the air valve, for detecting the temperature of the water inside the valve cavity and outputting a first detection value; the control module is in communication with the first temperature sensing device, and the control module makes a judgment based on the received first detection value, and issues a first alarm signal when the temperature inside the valve cavity is lower than a preset first threshold value. The system issues an alarm when the water temperature in the valve cavity of the monitored air valve is lower than a certain value, which can remind staff to perform emergency treatment on the air valve node in the valve well in advance to prevent the air valve from freezing and cracking.

Description

Technical Field

[0001] The present invention relates to the technical field of water pipeline systems, and more particularly to an intelligent air valve temperature monitoring and antifreeze system. Background Art

[0002] In long-distance water pipelines in northern China and other cold climate regions, air valves are installed in remote areas and buried deep within valve wells. Outdoor temperatures can reach several degrees below zero. Even with insulation in the valve wells, temperatures inside can still drop to several degrees below zero. The water in the pipes inside the wells can reach near-zero temperatures, making them prone to freezing and cracking. This can cause the air valves to malfunction, often unnoticed.

[0003] Some air valves in the prior art may have temperature sensors installed inside, but they do not have antifreeze monitoring and warning functions and antifreeze functions, and can only be used to reflect the temperature of the air valve and the water hammer in the pipeline on site. For example, in the Chinese patent application with patent publication number CN115596922A, a liquid pipeline pressure exhaust valve is disclosed, in which a display screen is also provided on the outer side of the lower liquid accumulation cavity in the valve body, and a temperature sensor and a pressure sensor for detecting temperature and pressure are also provided in the inner cavity of the lower liquid accumulation cavity, and the temperature sensor and pressure sensor are electrically connected to the display screen respectively. Through the temperature sensor and pressure sensor provided in the lower liquid accumulation cavity, the temperature and pressure in the lower liquid accumulation cavity can be detected and reflected. When the pressure is too high, the pressing rod is operated by hand, and the pressing rod can drive the exhaust rod to move, thereby manually exhausting the gas, eliminating safety hazards, and thus preventing safety accidents. Summary of the Invention

[0004] The present invention provides an intelligent air valve temperature monitoring and antifreeze system, which solves the problem that air valves are prone to freezing and cracking in cold climates and cannot be monitored.

[0005] In order to achieve the above object, the technical solution provided by the present invention is:

[0006] An intelligent air valve temperature monitoring and antifreeze system, characterized by comprising:

[0007] Air valve;

[0008] a first temperature sensing device, whose sensing end is arranged inside the valve cavity of the air valve, for detecting the temperature of the medium inside the valve cavity and outputting a first detection value;

[0009] The control module is in communication with the first temperature sensing device, performs a judgment based on the received first detection value, and issues a first alarm signal when the first detection value is lower than a preset first threshold value.

[0010] As a further improvement, the intelligent air valve temperature monitoring and antifreeze system also includes a second temperature sensing device. The air valve is installed in the valve well of the water pipeline. The second temperature sensing device is used to detect the temperature in the valve well outside the valve cavity and output a second detection value; the control module is communicatively connected with the second temperature sensing device, and the control module makes a judgment based on the received second detection value. When the second detection value is lower than a preset second threshold, the control module issues a second alarm signal.

[0011] As a further improvement, the intelligent air valve temperature monitoring and antifreeze system also includes a third temperature sensing device, which is used to detect the temperature outside the valve well and output a third detection value; the control module is communicatively connected to the third temperature sensing device, and the control module performs a joint comparison and judgment based on the received third detection value and the first detection value and / or the second detection value. When the temperature difference exceeds a preset third threshold value, the control module issues a third alarm signal.

[0012] As a further improvement, the sensing end of the second temperature sensing device is arranged in the exhaust channel outside the valve cavity of the air valve, and the second temperature sensing device is also used to detect the gas temperature during the exhaust process of the air valve and output a fourth detection value; the control module calculates the instantaneous temperature value of the gas during the exhaust process based on the received fourth detection value, records and stores it, and outputs the instantaneous temperature value of the gas.

[0013] As a further improvement, the intelligent air valve temperature monitoring and antifreeze system also includes an antifreeze device, which is communicatively connected to the control module; the control module is communicatively connected to the remote control terminal, and when the control module receives a first action instruction from the remote control terminal, the antifreeze device is controlled to start working; when the control module receives a second action instruction from the remote control terminal, the antifreeze device is controlled to stop working.

[0014] As a further improvement, the intelligent air valve temperature monitoring and antifreeze system also includes an antifreeze device, which is communicatively connected to the control module; when the first detection value is lower than a preset first threshold, the control module controls the antifreeze device to start working.

[0015] As a further improvement, the intelligent air valve temperature monitoring and antifreeze system also includes an antifreeze device, which is communicatively connected to the control module; when the second detection value is lower than a preset second threshold, the control module controls the antifreeze device to start working.

[0016] As a further improvement, the intelligent air valve temperature monitoring and antifreeze system further includes an antifreeze device, which is communicatively connected to the control module; when the temperature difference exceeds a preset third threshold, the control module controls the antifreeze device to start working.

[0017] As a further improvement, the intelligent air valve temperature monitoring and antifreeze system, the antifreeze device includes a solenoid valve and a micro-drain pipe, the micro-drain pipe is connected to the valve cavity of the air valve, and the solenoid valve is connected to the micro-drain pipe to open and close the micro-drain pipe.

[0018] As a further improvement, in the intelligent air valve temperature monitoring and antifreeze system, the antifreeze device is an electric heater provided on the outer wall of the valve body of the air valve.

[0019] Compared with the prior art, the technical solution provided by the present invention has the following beneficial effects:

[0020] 1. In the solution of the present invention, the temperature of the medium in the valve cavity of the air valve is detected by the first temperature sensing device. The control module monitors that the temperature of the medium in the valve cavity is lower than a certain value and issues an alarm, which can remind the staff to carry out emergency treatment of the air valve node in the valve well in advance to prevent the air valve from freezing and cracking.

[0021] 2. In the solution of the present invention, joint monitoring is performed through various temperature sensing devices inside the air valve, outside the air valve, and outside the valve well. It is not only possible to predict in advance whether there is a risk of freezing at the air valve node, but also to judge whether the insulation measures of the valve well are effective, and whether the sealing of the valve well is too tight and may affect the normal intake and exhaust function of the air valve.

[0022] 3. In the solution of the present invention, when there is an early warning of possible freezing, anti-freezing measures can be applied to the air valve through the anti-freezing device, which can be controlled automatically or remotely, and can effectively avoid the problem of ice and cracking of the air valve.

[0023] 4. In the solution of the present invention, a second temperature sensing device is arranged in the exhaust channel of the air valve through the sensing end, which can monitor the transient temperature during the exhaust process of the air valve, record and store it, and output the transient temperature curve, which can be used to judge the exhaust performance of the air valve, and whether the large temperature difference generated during high-speed exhaust will affect the air valve components, which is beneficial to guide or optimize the design of the air valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 Schematic diagram of the structure of the intelligent air valve temperature monitoring and antifreeze system in an embodiment of the present invention;

[0025] Figure 2This is a first antifreeze application flow chart of the intelligent air valve temperature monitoring and antifreeze system in an embodiment of the present invention;

[0026] Figure 3 This is a second antifreeze application flow chart of the intelligent air valve temperature monitoring antifreeze system in an embodiment of the present invention;

[0027] Figure 4 This is a flow chart of monitoring the instantaneous exhaust temperature of the intelligent air valve temperature monitoring and antifreeze system in an embodiment of the present invention;

[0028] Figure 5 This is a flow chart of the third antifreeze application of the intelligent air valve temperature monitoring antifreeze system in an embodiment of the present invention.

[0029] Description of labels:

[0030] 1-air valve; 2-first temperature sensing device; 3-control module; 4-second temperature sensing device; 5-third temperature sensing device; 6-valve well; 7-solenoid valve; 8-micro-drain pipe. DETAILED DESCRIPTION

[0031] In order to further understand the content of the present invention, the present invention is described in detail with reference to the accompanying drawings and embodiments.

[0032] The structures, proportions, sizes, etc. depicted in the drawings of this specification are only used to match the contents disclosed in the specification so as to facilitate understanding and reading by persons familiar with this technology. They are not intended to limit the conditions under which the present invention can be implemented and therefore have no substantive technical significance. Any structural modifications, changes in proportional relationships, or adjustments in size should still fall within the scope of the technical contents disclosed in the present invention without affecting the effects and objectives that can be achieved by the present invention.

[0033] At the same time, the terms such as "upper", "lower", "left", "right", and "middle" cited in this specification are only for the convenience of description and are not intended to limit the scope of implementation. Changes or adjustments in their relative relationships should also be considered as the scope of implementation of the present invention without substantially changing the technical content. In addition, in addition to being used to indicate orientation or positional relationships, some of the above terms may also be used to express other meanings. For example, the term "upper" may also be used to indicate a certain dependency or connection relationship in certain circumstances. For those of ordinary skill in the art, the specific meanings of these terms in this application can be understood according to the specific circumstances.

[0034] It should be noted that the terms "first," "second," and the like in the specification and claims of this application and the accompanying drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate, for the purposes of describing the embodiments of the present application herein.

[0035] like Figure 1 As shown, an intelligent air valve temperature monitoring and antifreeze system according to an embodiment of the present invention is mainly used to intelligently monitor the working status and working environment of the air valve 1 in the valve well 6, including temperature monitoring, antifreeze warning, working environment status judgment, and control and execution of antifreeze measures.

[0036] Reference Figure 2 This embodiment of the present invention provides an intelligent air valve temperature monitoring and antifreeze system, comprising an air valve 1, a first temperature sensing device 2, and a control module 3. The air valve 1 is installed in a valve well 6 of a water pipeline. The first temperature sensing device 2 has a sensing terminal located within the valve chamber of the air valve 1, configured to detect the temperature of the water within the valve chamber and output a first detection value. The control module 3 is in communication with the first temperature sensing device 2 and determines based on the received first detection value. When the first detection value, i.e., the temperature within the valve chamber, falls below a preset first threshold, the control module 3 issues a first alarm signal.

[0037] During the monitoring process, the medium flowing through the water pipeline is generally a liquid or some liquid-solid mixture. To facilitate the explanation of the technical solution of the present invention, the following example uses water as the medium. Whether the water in the valve chamber of air valve 1 freezes will directly affect the operation of air valve 1. Since air valve 1 is installed at a higher position than the water pipeline, the water temperature in the valve chamber of air valve 1 will also be lower than the water temperature in the water pipeline. The first temperature sensing device 2 can be a pressure-resistant temperature sensor, and the control module 3 can be a control device with storage, computing, communication, and control functions, such as an RTU or PLC. The specific configuration of the system can be: for example, a first threshold value can be set to 0.5°C. When the temperature sensor detects that the water temperature in the valve chamber reaches 0.5°C, it indicates that there is a risk of freezing. The control module 3 communicates with the remote terminal and sends a first alarm signal, which notifies the staff and allows for preventive measures in advance.

[0038] Reference Figure 3In this embodiment, the intelligent air valve temperature monitoring and antifreeze system further includes a second temperature sensing device 4, which is used to detect the temperature in the valve well 6 outside the valve chamber and output a second detection value; the control module 3 is communicated with the second temperature sensing device 4, and the control module 3 makes a judgment based on the received second detection value. When the second detection value, i.e., the temperature in the valve well 6, is lower than a preset second threshold value, the control module 3 issues a second alarm signal.

[0039] The second temperature sensing device 4 is a temperature sensor installed on the air valve 1, which mainly detects the gas temperature in the valve well 6. When the air temperature is lower than the set value, it indicates that the ambient temperature in the valve well 6 is too low and there is a risk of freezing. The control module 3 sends an alarm accordingly to provide early warning.

[0040] In a further embodiment, specifically, the sensing end of the second temperature sensing device 4 is arranged in the exhaust passage outside the valve cavity of the air valve 1, referring to Figure 4 The second temperature sensing device 4 is also used to detect the gas temperature during the exhaust process of the air valve 1 and output a fourth detection value; the control module 3 calculates the instantaneous temperature value of the gas during the exhaust process based on the received fourth detection value, records and stores it, and outputs the instantaneous temperature value of the gas.

[0041] The air temperature in the exhaust passage of the air valve 1 is detected by the second temperature sensing device 4. The control module can calculate the instantaneous temperature of the exhaust gas based on the gas state equation, record and store it through the control module 3, and output the instantaneous temperature value of the gas. The temperature curve formed by the instantaneous temperature value of the gas can be used as analytical data. The instantaneous temperature value of the gas during exhaust can be used to more accurately calculate the exhaust volume of the air valve 1 and serve as a basis for judging the exhaust performance of the air valve 1. In addition, the instantaneous temperature value of the gas can also determine the impact of the large temperature difference generated during high-speed exhaust on the components of the air valve 1, which is beneficial for guiding or optimizing the design of the air valve 1. For example, if the air temperature is lower than -5℃ to -30℃, or the temperature difference between the inside and outside of the valve cavity of the air valve 1 reaches a certain threshold, such as 25℃ to 50℃, the low-temperature gas may damage the components of the air valve 1, and materials with better antifreeze properties need to be used.

[0042] Reference Figure 5 In this embodiment, the intelligent air valve temperature monitoring and antifreeze system further includes a third temperature sensing device 5, which is used to detect the temperature outside the valve well 6 and output a third detection value; the control module 3 is communicatively connected to the third temperature sensing device 5, and the control module 3 performs a joint comparison and judgment based on the received third detection value and the first detection value and / or the second detection value. When the temperature difference exceeds a preset third threshold value, the control module 3 issues a third alarm signal.

[0043] The third temperature sensing device 5 is specifically a temperature sensor arranged outside the valve well 6. The third temperature sensing device 5 can detect the temperature of the external environment. When the control module 3 compares the third detection value with the first detection value and / or the second detection value, it can calculate the temperature difference between the temperature inside and outside the valve well 6 or the temperature difference between the water temperature in the valve cavity of the air valve 1 and the temperature inside and outside the valve well 6. Based on this, it can be judged whether the insulation measures of the valve well 6 have failed, and whether the sealing of the valve well 6 is too tight and may affect the normal intake and exhaust function of the air valve 1. Therefore, the control module 3 sends out a third alarm signal which can be used as an early warning for monitoring the working environment status.

[0044] Through the various detection and warning schemes described above, in order to more quickly and conveniently protect the air valve 1 from ice formation and cracking, the intelligent air valve temperature monitoring and antifreeze system provided in this example further comprises an antifreeze device, which is in communication with the control module 3 and is activated or deactivated by the control module 3. When activated, the antifreeze device can eliminate the conditions that cause ice formation in the valve cavity of the air valve 1, thereby achieving an antifreeze function.

[0045] The method for determining whether the antifreeze device is activated can be the same as the method for determining whether the control module 3 issues the first alarm signal, the second alarm signal, or the third alarm signal. Therefore, the communication connection between the control module 3 and the antifreeze device in this embodiment can be configured as follows:

[0046] When the first detection value, i.e., the temperature inside the valve cavity, is lower than a preset first threshold, the control module 3 controls the antifreeze device to start working;

[0047] When the second detection value, i.e., the temperature in the valve well 6, is lower than a preset second threshold, the control module 3 controls the antifreeze device to start working;

[0048] When the temperature difference between the inside and outside air temperature of the valve well 6 or the temperature difference between the water temperature in the valve cavity of the air valve 1 and the inside and outside air temperature of the valve well 6 exceeds a preset third threshold, the control module 3 controls the antifreeze device to start working.

[0049] In some other embodiments, the control module 3 is in communication with a remote control terminal. When the control module 3 receives a first action instruction from the remote control terminal, it controls the antifreeze device to start working; and when the control module 3 receives a second action instruction from the remote control terminal, it controls the antifreeze device to stop working. Thus, when a staff member receives an alarm, the staff member can remotely control whether to start or stop the antifreeze device.

[0050] In this embodiment, a first embodiment of the antifreeze device includes a solenoid valve 7 and a micro-drain pipe 8. The micro-drain pipe 8 is connected to the valve cavity of the air valve 1. The solenoid valve 7 is connected to the micro-drain pipe 8 to open and close the micro-drain pipe 8. When the antifreeze device is activated, the control module 3 controls the solenoid valve 7 to open. Because the air valve 1 is installed at a higher height than the water supply pipeline, the water temperature in the water supply pipeline is higher than the water temperature in the valve cavity of the air valve 1. Under the influence of the pipeline water pressure, the water in the water supply pipeline flows into the valve cavity of the air valve 1 and is then discharged through the small-diameter micro-drain pipe 8, forming a flowing water flow, preventing the water in the valve cavity from freezing.

[0051] A second embodiment of the antifreeze device is an electric heater installed on the outer wall of the valve body of the air valve 1. The electric heater can be a heating cable wrapped around the outer wall of the air valve 1, or it can be another electric heating device that covers the outer wall of the air valve 1 but does not hinder the air valve 1 from inhaling or exhaling. When the control module 3 controls the electric heater to start operating, the electric heater can increase the water temperature in the valve chamber of the air valve 1, thereby preventing ice from forming.

[0052] It is worth noting that the antifreeze device only provides specific antifreeze measures. Here, the specific structure of the antifreeze device is no longer exhaustively listed. As long as the system solution of the present invention can protect the air valve 1 from freezing when starting up, other antifreeze devices made based on the prior art do not require creative work and should be considered to be within the scope of protection of the present invention.

[0053] The terms "installed," "disposed," "equipped with," and "connected" as used herein should be interpreted broadly. For example, they may refer to fixed connections, removable connections, or integral structures; mechanical connections or electrical connections; direct connections, indirect connections through an intermediary, or internal communication between two devices, elements, or components. Those skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances.

[0054] The above is a schematic description of the present invention and its embodiments, which is not restrictive. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. Therefore, if a person skilled in the art is inspired by this and, without departing from the purpose of the present invention, designs a structure and embodiment similar to this technical solution without inventiveness, they shall fall within the scope of protection of the present invention.

Claims

1. Intelligent air valve temperature monitoring and antifreeze system, characterized by: include: Air valve (1); A first temperature sensing device (2), the sensing end of which is arranged inside the valve cavity of the air valve (1), and is used to detect the temperature of the medium inside the valve cavity and output a first detection value; a second temperature sensing device (4), the second temperature sensing device (4) being used to detect the temperature in the valve well (6) outside the valve cavity and output a second detection value; a third temperature sensing device (5), the third temperature sensing device (5) being used to detect the temperature outside the valve well (6) and output a third detection value; The control module (3) is in communication with the first temperature sensing device (2), the second temperature sensing device (4), and the third temperature sensing device (5), and makes a judgment based on the received first detection value. When the first detection value is lower than a preset first threshold value, a first alarm signal is issued. The control module (3) makes a joint comparison and judgment based on the received third detection value and the first detection value and / or the second detection value. When the temperature difference exceeds a preset third threshold value, the control module (3) issues a third alarm signal.

2. The intelligent air valve temperature monitoring and antifreeze system according to claim 1 is characterized by: The air valve (1) is installed in the valve well (6) of the water pipeline; The control module (3) performs a judgment based on the received second detection value, and when the second detection value is lower than a preset second threshold, the control module (3) issues a second alarm signal.

3. The intelligent air valve temperature monitoring and antifreeze system according to claim 2 is characterized by: The sensing end of the second temperature sensing device (4) is arranged in the exhaust passage outside the valve cavity of the air valve (1), and the second temperature sensing device (4) is further used to detect the gas temperature during the exhaust process of the air valve (1) and output a fourth detection value; The control module (3) calculates the instantaneous temperature value of the gas during the exhaust process based on the received fourth detection value, records and stores the value, and outputs the instantaneous temperature value of the gas.

4. The intelligent air valve temperature monitoring and antifreeze system according to any one of claims 1 to 3, characterized in that: It also includes an antifreeze device, which is in communication with the control module (3); The control module (3) is in communication connection with a remote control terminal, and controls the antifreeze device to start working when the control module (3) receives a first action instruction from the remote control terminal; and controls the antifreeze device to stop working when the control module (3) receives a second action instruction from the remote control terminal.

5. The intelligent air valve temperature monitoring and antifreeze system according to claim 1, further comprising an antifreeze device, wherein the antifreeze device is communicatively connected to the control module (3); When the first detection value is lower than a preset first threshold value, the control module (3) controls the antifreeze device to start working.

6. The intelligent air valve temperature monitoring and antifreeze system according to claim 2 is characterized by: It also includes an antifreeze device, which is in communication with the control module (3); When the second detection value is lower than a preset second threshold value, the control module (3) controls the antifreeze device to start working.

7. The intelligent air valve temperature monitoring and antifreeze system according to claim 1 is characterized by: It also includes an antifreeze device, which is in communication with the control module (3); When the temperature difference exceeds a preset third threshold, the control module (3) controls the antifreeze device to start working.

8. The intelligent air valve temperature monitoring and antifreeze system according to any one of claims 6-7, characterized in that: The antifreeze device comprises a solenoid valve (7) and a micro-drain pipe (8), wherein the micro-drain pipe (8) is communicated with the valve cavity of the air valve (1), and the solenoid valve (7) is connected to the micro-drain pipe (8) to open and close the micro-drain pipe (8).

9. The intelligent air valve temperature monitoring and antifreeze system according to any one of claims 5 to 7, characterized in that: The antifreeze device is an electric heater arranged on the outer wall of the valve body of the air valve (1).

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