Temperature monitoring type intelligent air valve

Abstract

The utility model relates to the technical field of water conveying pipeline systems, and discloses a temperature monitoring type intelligent air valve which comprises an air valve body, a first temperature sensing device, a second temperature sensing device and a control module. The first temperature sensing device is connected to the air valve body, and the sensing end of the first temperature sensing device is located in the valve cavity and used for detecting the temperature in the valve cavity of the air valve body. The second temperature sensing device is connected to the air valve body, and the sensing end of the second temperature sensing device is located outside the valve cavity and used for detecting the temperature outside the valve cavity of the air valve body. The control module is in communication connection with the first temperature sensing device and the second temperature sensing device. According to the intelligent air valve, the internal water temperature and the external air temperature can be detected, the condition of the environment where the air valve is located can be monitored in real time, the freezing risk possibly occurring in the air valve can be judged, early warning is given out, real-time remote monitoring is achieved, and freezing of the air valve can be effectively prevented and avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of water pipeline systems, and more specifically to a temperature monitoring type intelligent air valve. 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. Utility Model Content

[0004] The utility model provides a temperature monitoring type intelligent air valve, which solves the problem that the air valve is easy to freeze and crack in cold climate environment and cannot be monitored.

[0005] In order to achieve the above-mentioned purpose, the technical solution provided by the present utility model is:

[0006] A temperature monitoring intelligent air valve, characterized by comprising:

[0007] Air valve body;

[0008] a first temperature sensing device, wherein a sensing end of the first temperature sensing device is located inside the valve cavity of the air valve body and is used to detect the temperature inside the valve cavity;

[0009] a second temperature sensing device, wherein a sensing end of the second temperature sensing device is located outside the valve cavity and is used to detect the temperature outside the valve cavity;

[0010] The control module is communicatively connected to the first temperature sensing device and the second temperature sensing device respectively.

[0011] As a further improvement, the sensing end of the second temperature sensing device is arranged in the exhaust channel outside the valve cavity, and the second temperature sensing device is also used to detect the gas temperature during the exhaust process of the air valve body.

[0012] As a further improvement, the temperature-monitoring intelligent air valve further includes a third temperature sensing device, and the third temperature sensing device is communicatively connected to the control module.

[0013] As a further improvement, the temperature-monitoring intelligent air valve further includes an antifreeze device, which is communicatively connected to the control module.

[0014] As a further improvement, the antifreeze device is an electric heater provided on the outer wall of the valve body of the air valve body.

[0015] As a further improvement, the antifreeze device includes a solenoid valve and a micro-drain pipe, the micro-drain pipe is connected to the valve chamber, and the solenoid valve is connected to the micro-drain pipe.

[0016] Compared with the prior art, the technical solution provided by this utility model has the following beneficial effects:

[0017] 1. The temperature-monitoring intelligent air valve of the present invention detects the internal water temperature and external air temperature of the air valve body through the first temperature sensing device and the second temperature sensing device, and can monitor the environment in which the air valve is located in real time, judge the possible freezing risk in the air valve and issue an early warning, thereby realizing real-time remote monitoring and effectively preventing and avoiding freezing of the air valve.

[0018] 2. The intelligent air valve of the utility model can control the antifreeze device to protect the air valve through the control module and the antifreeze device when it automatically detects possible ice formation, eliminates the ice conditions, and prevents the air valve from freezing and cracking. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic structural diagram of a temperature monitoring intelligent air valve in an embodiment;

[0020] Figure 2 Schematic diagram of the structure of the temperature monitoring intelligent air valve in the embodiment applied to the valve well of the water pipeline.

[0021] Description of labels:

[0022] 1-air valve body; 11-valve body; 12-float valve core; 13-pipeline interface; 14-valve seat; 15-valve chamber; 16-intake and exhaust hood; 17-filter; 18-top cover; 19-exhaust channel; 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

[0023] 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.

[0024] The structures, proportions, sizes, etc. depicted in the drawings of this specification are only used to match the contents disclosed in this specification so as to facilitate understanding and reading by those 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, without affecting the efficacy and objectives that can be achieved by the present invention, should still fall within the scope of the technical contents disclosed in the present invention.

[0025] 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 to their relative relationships, without substantially changing the technical content, should also be considered as the scope of implementation of this utility model. 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.

[0026] 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.

[0027] like Figure 1-2 As shown, a temperature monitoring intelligent air valve of this embodiment includes an air valve body 1, a first temperature sensing device 2, a second temperature sensing device 4 and a control module 3. Among them:

[0028] The air valve body 1 includes a valve body 11, a valve seat 14, a float valve core 12 and a valve cover assembly. The lower end of the valve body 11 has a pipe interface 13 for connecting to a water supply pipeline. The valve seat 14 is fixedly connected to the valve body 11, and the float valve core 12 is arranged in a valve cavity 15 formed between the valve body 11 and the valve seat 14. The float valve core 12 can float up when the liquid level in the valve cavity 15 rises, and fall down when the liquid level drops. The valve cover assembly includes an air intake and exhaust hood 16, a filter screen 17 and a top cover 18. The air intake and exhaust hood 16 is fixed to the upper end of the valve seat 14. The filter screen 17 and the top cover 18 are fixed to the inner cavity of the air intake and exhaust hood 16 from bottom to top. The inner cavity between the top cover 18, the filter screen 17 and the air intake and exhaust hood 16 forms an exhaust channel 19 of the air valve body 1. During normal operation of the pipeline, the air valve body 1 is filled with water in the valve cavity 15, the float valve core 12 forms a sealing pair with the valve seat 14, and the float valve core 12 closes the intake and exhaust ports on the valve seat 14; when gas is generated in the pipeline, the float valve core 12 opens the intake and exhaust ports on the valve seat 14 to exhaust; when negative pressure is generated in the pipeline, the float valve core 12 opens the intake and exhaust ports on the valve seat 14 to inhale.

[0029] The first temperature sensing device 2 is a temperature sensor. When the intelligent air valve is used on a high-pressure water pipeline, a pressure-resistant temperature sensor can be used. The first temperature sensing device 2 is fixedly connected to the valve body 11 of the air valve body 1, with its sensing end located within the valve cavity 15. The first temperature sensing device 2 and the valve body 11 are sealed together, and the first temperature sensing device 2 is used to detect the temperature within the valve cavity 15 of the air valve body 1.

[0030] The second temperature sensing device 4 is also a temperature sensor. The second temperature sensing device 4 can use the same type of temperature sensor as the first temperature sensing device 4, or a different type of temperature sensor can be selected according to different installation environments. The second temperature sensing device 4 is fixedly connected to the top cover 18 of the air valve body 1, and its sensing end is located outside the valve cavity 15. The second temperature sensing device 4 is used to detect the temperature outside the valve cavity 15 of the air valve body 1.

[0031] The control module 3 is a control device with storage, computing, communication, and control functions, such as an RTU or PLC. The control module 3 can be fixedly mounted on the valve body 11 or independently installed in a control box. The control module 3 is in communication with the first temperature sensing device 2 and the second temperature sensing device 4. The control module 3 receives the output signals of the first temperature sensing device 2 and the second temperature sensing device 4, compares the detected temperature value with a preset threshold value, and determines whether there is a risk of icing on the air valve body 1.

[0032] According to the temperature monitoring intelligent air valve of the present embodiment described above, in a specific antifreeze application, it can be configured as follows:

[0033] The first temperature sensing device 2 detects the temperature of the water inside the valve cavity 15 and outputs a first detection signal. The control module 3 makes a judgment based on the received first detection signal. When the temperature inside the valve cavity 15 is lower than a preset first threshold, a first alarm signal is issued. For example, the first threshold can be set to 0.5°C. When the temperature sensor detects that the water temperature in the valve cavity 15 reaches 0.5°C, it indicates that there is a risk of freezing. The control module 3 communicates with the remote terminal to send the first alarm signal, which notifies the staff so that preventive measures can be taken in advance.

[0034] The second temperature sensing device 4 detects the gas temperature in the valve well 6 outside the valve chamber 15 and outputs a second detection signal. The control module 3 makes a judgment based on the received second detection signal. When the temperature in the valve well 6 is lower than the preset second threshold, the control module 3 issues a second alarm signal. The alarm informs the staff so that preventive measures can be taken in advance.

[0035] In a further embodiment, the second temperature sensing device 4 can also be used to detect the transient gas temperature of the air valve body 1 during exhaust. As a preferred solution, the second temperature sensing device 4 is fixedly mounted on the top cover of the air valve body 1, and the sensing end of the second temperature sensing device 4 is disposed in the exhaust passage 19 of the air valve body 1. The second temperature sensing device 4 detects the air temperature in the exhaust passage 19. For example, if the air temperature is below -5°C to -20°C, or if the temperature difference between the inside and outside of the air valve cavity 15 reaches a certain threshold, such as 25°C to 30°C, the instantaneous temperature of the exhaust gas can be calculated based on the gas state equation. This temperature can be recorded and stored by the control module 3 and used as a basis for judging the exhaust performance of the air valve body 1. It can also determine the impact of the large temperature difference generated during high-speed exhaust on the air valve components, which is beneficial for guiding or optimizing the design of the air valve body 1.

[0036] In this embodiment, the intelligent air valve further includes a third temperature sensing device 5, which is in communication with the control module 3 and is a temperature sensor. Figure 2 As shown, in actual applications, the third temperature sensing device 5 can be installed outside the valve well 6 of the intelligent air valve to detect the air temperature outside the valve well 6 and send a detection signal to the control module 3. The control module 3 compares the air temperature outside the valve well 6 with the air temperature inside the valve well 6 / the water temperature in the valve chamber 15 to calculate the temperature difference. Based on whether the temperature difference exceeds a preset value, it can be determined whether the insulation measures of the valve well 6 have failed or whether the seal of the valve well 6 is too tight, which may affect the normal intake and exhaust functions of the air valve. For example, when the temperature difference between the air temperature outside the valve well 6 and the air temperature inside the valve well 6 / the water temperature in the valve chamber 15 exceeds a preset value, the control module 3 sends a third alarm signal, which can serve as an early warning for monitoring the working environment status.

[0037] In this embodiment, to protect the air valve body 1 from ice formation and cracking, the temperature-monitoring intelligent air valve is further provided with an antifreeze device. The antifreeze device is in communication with the control module 3, and the control module 3 can control the activation or deactivation of the antifreeze device. When activated, the antifreeze device eliminates the conditions that could cause ice formation in the air valve chamber 15, thereby providing an antifreeze function. For example, the control module 3 can activate the antifreeze device when the control module 3 issues a first alarm signal, a second alarm signal, or a third alarm signal.

[0038] In this embodiment, the 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 chamber 15 of the air valve body 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 body 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 chamber 15 of the air valve body 1. Under the influence of the pipeline water pressure, the water in the water supply pipeline flows into the valve chamber 15 and is then discharged through the small-diameter micro-drain pipe 8, forming a flowing water flow, preventing the water in the valve chamber 15 from freezing.

[0039] A second embodiment of the antifreeze device is an electric heater disposed on the outer wall of the valve body 11 of the air valve body 1. The electric heater can be a heating cable wound around the outer wall of the valve body 11 of the air valve body 1, or it can be another electric heating device that covers the outer wall of the valve body 11 but does not obstruct the air valve body 1 from inhaling or exhaling. When the control module 3 activates the electric heater, it raises the water temperature in the air valve chamber 15, thereby preventing ice from forming.

[0040] 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.

[0041] 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 inventive purpose of the present invention, designs a structure and embodiment similar to the technical solution without inventiveness, they shall fall within the scope of protection of the present invention.

Claims

1. A temperature monitoring intelligent air valve, characterized by: include: Air valve body (1); a first temperature sensing device (2), wherein a sensing end of the first temperature sensing device (2) is located inside the valve cavity (15) of the air valve body (1) and is used to detect the temperature inside the valve cavity (15); a second temperature sensing device (4), wherein a sensing end of the second temperature sensing device (4) is located outside the valve cavity (15) and is used to detect the temperature outside the valve cavity (15); The control module (3) is communicatively connected to the first temperature sensing device (2) and the second temperature sensing device (4).

2. The temperature monitoring intelligent air valve according to claim 1, characterized in that: The sensing end of the second temperature sensing device (4) is arranged in the exhaust passage (19) outside the valve cavity (15), and the second temperature sensing device (4) is also used to detect the gas temperature during the exhaust process of the air valve body (1).

3. The temperature monitoring intelligent air valve according to claim 1, characterized in that: It also includes a third temperature sensing device (5), and the third temperature sensing device (5) is communicatively connected to the control module (3).

4. The temperature-monitoring intelligent air valve according to any one of claims 1 to 3, characterized in that: It also includes an antifreeze device, which is communicatively connected to the control module (3).

5. The temperature monitoring intelligent air valve according to claim 4, characterized in that: The antifreeze device is an electric heater arranged on the outer wall of the valve body (11) of the air valve body (1).

6. The temperature monitoring intelligent air valve according to claim 4, characterized in that: The antifreeze device comprises a solenoid valve (7) and a micro-drain pipe (8), wherein the micro-drain pipe (8) is connected to the valve chamber (15), and the solenoid valve (7) is connected to the micro-drain pipe (8).

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