Intelligent valve with internal leakage diagnosis function

Abstract

The utility model provides a kind of intelligent valve with internal leakage diagnosis function, including the valve body between two adjacent pipes, valve body is equipped with valve plate;Valve plate extends out the valve body after one end and is connected with handle;It further includes: first temperature sensor, its probe is inserted into the pipeline in the one side of valve body, for detecting the medium temperature in this section pipeline;Second temperature sensor, its probe is inserted into the pipeline in the other side of valve body, for detecting the medium temperature in this section pipeline;Alarm device, it is equipped on the handle, respectively with first temperature sensor, second temperature sensor signal connection, for in the valve plate closed state, according to the detection value of first temperature sensor and second temperature sensor, judge the sealing property when valve plate is closed, and generate alarm instruction when judging as sealing abnormality.The utility model has temperature detection and sealing property monitoring dual function, greatly improves monitoring efficiency and reliability.

Description

Technical Field

[0001] This utility model relates to the field of valve technology, and in particular to an intelligent valve with internal leakage diagnosis function. Background Technology

[0002] Valves in pipeline systems primarily control the flow of fluids and regulate their flow rate. Traditional valves, such as butterfly valves and gate valves, are prone to internal leakage over long-term use due to factors such as wear and corrosion of seals or improper installation. These leaks are often difficult to detect in a timely manner, leading not only to energy waste and environmental pollution but also the potential for safety accidents.

[0003] Meanwhile, in existing technologies, temperature detection and seal monitoring are typically two separate systems, lacking an integrated solution. Temperature detection is mainly achieved through independent temperature sensors, while seal monitoring requires additional detection equipment, increasing system complexity and cost. Furthermore, traditional seal detection methods mostly require manual inspection or periodic maintenance, failing to achieve real-time monitoring and automatic alarms, resulting in problems such as untimely monitoring and low efficiency. Moreover, existing technologies fail to fully utilize and address the specific thermodynamic environment of the pipe sections where valves are located, especially in industrial scenarios such as heating and air conditioning systems, where many pipe loops possess significant and stable temperature differences during normal operation. Current technologies have not yet provided an integrated solution that cleverly utilizes this inherent temperature difference to achieve highly sensitive internal leak diagnosis.

[0004] Therefore, there is an urgent need for an integrated valve device that can simultaneously achieve temperature detection and real-time monitoring of sealing status to improve the safety, reliability, and economy of pipeline systems. Utility Model Content

[0005] The purpose of this invention is to overcome the above-mentioned shortcomings of the prior art and provide an intelligent valve with a simple structure, multiple functions, and internal leakage diagnosis function.

[0006] The technical solution of this utility model is: an intelligent valve with internal leakage diagnosis function, including a valve body disposed between two adjacent pipe sections, a valve plate disposed inside the valve body; one end of the valve plate extends out of the valve body and is connected to a handle; and further includes: The first temperature sensor has its probe inserted into the pipe on one side of the valve body to detect the temperature of the medium in that section of the pipe. The second temperature sensor has its probe inserted into the pipe on the other side of the valve body to detect the temperature of the medium in that section of the pipe. An alarm device is installed on the handle and is connected to the first temperature sensor and the second temperature sensor respectively. It is used to determine the sealing performance of the valve plate when it is closed based on the detection values ​​of the first temperature sensor and the second temperature sensor, and to generate an alarm command when the sealing is abnormal.

[0007] Furthermore, the alarm device includes an alarm and a microprocessor, with the first temperature sensor and the second temperature sensor connected to the input terminal of the microprocessor, and the output terminal of the microprocessor connected to the alarm.

[0008] Furthermore, the alarm device also includes a display screen for displaying the real-time temperature detection values ​​of the first temperature sensor and the second temperature sensor.

[0009] Furthermore, when the valve plate is open, the alarm device is only used to display the real-time temperature detection values ​​of the probes on both sides, and the alarm function is turned off; when the valve plate is closed, the alarm device is used to display the real-time temperature detection values ​​of the probes on both sides and automatically turns on the alarm function.

[0010] Furthermore, when the valve plate is closed, the microprocessor obtains the difference between the real-time temperature detection values ​​detected by the first temperature sensor and the second temperature sensor, compares the absolute value of the difference with a preset target difference, and if the absolute value of the difference is not less than the target difference, no alarm is required; otherwise, it is determined that there is a leak in the valve body, and the alarm is activated.

[0011] Furthermore, the pipe is an insulated pipe.

[0012] Furthermore, the valve body is installed on a pipe section with a detectable temperature difference between its upstream and downstream sides; wherein, When the valve plate is open, the temperature difference is determined by the system operating conditions; When the valve plate is closed and the seal is good, this temperature difference is established and maintained; When the valve plate is closed but a leak occurs, the temperature difference tends to disappear.

[0013] Furthermore, the valve body is installed in the insulated pipe between the energy output end and the energy consumption end of the system.

[0014] The beneficial effects of this utility model are: (1) By setting an alarm device on the handle of the valve body, the valve can achieve the dual functions of temperature detection and sealing monitoring without changing the structure of the valve body itself, which greatly simplifies the structure and greatly improves the efficiency of human-machine interaction. (2) By setting up a first temperature sensor, a second temperature sensor and an alarm device, the valve sealing status can be monitored in real time and online. This effectively overcomes the lag of traditional manual inspection and regular maintenance. It can detect internal leakage faults caused by wear or corrosion of the sealing parts in a timely manner, and avoid the continuous waste of energy and potential safety accidents caused by this. Once the temperature difference between the two sides of the valve approaches zero after the valve is closed, the system can automatically trigger an alarm. This fundamentally changes the backward method of relying on manual judgment and greatly improves the monitoring efficiency and reliability. It is especially suitable for early warning of internal leakage and real-time sealing monitoring of valves in systems such as district heating and central air conditioning in pipeline circuits with stable and significant temperature differences. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the valve structure according to an embodiment of the present utility model; Figure 2 This is a schematic diagram of the structure of the valve installed between two pipe sections in an embodiment of the present invention.

[0016] Explanation of reference numerals in the attached diagram: 1. Valve body; 2. First temperature sensor; 3. Second temperature sensor; 4. Alarm device; 5. Pipeline; 11. Valve plate; 12. Handle. Detailed Implementation

[0017] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0018] like Figure 1 and Figure 2 As shown: An intelligent valve with internal leakage diagnosis function includes a valve body 1 disposed between two adjacent pipe sections 5, and a valve plate 11 disposed inside the valve body 1; one end of the valve plate 11 extends out of the valve body and is connected to a handle 12, and the valve opening and closing is controlled by the handle 12; it also includes: The first temperature sensor 2 has its probe inserted into the pipe on one side of the valve body to detect the temperature of the medium in that section of the pipe. The second temperature sensor 3 has its probe inserted into the pipe on the other side of the valve body to detect the temperature of the medium in that section of the pipe. An alarm device 4 is mounted on the handle 12 and is connected to the first temperature sensor 2 and the second temperature sensor 3 respectively. It is used to determine the sealing performance of the valve plate when it is closed based on the detection values ​​of the first temperature sensor 2 and the second temperature sensor 3, and to generate an alarm command when the sealing is determined to be abnormal.

[0019] Specifically, the intelligent valve in this embodiment combines temperature detection and sealing monitoring functions, making it widely applicable in various scenarios. It can be used in air conditioning systems, domestic hot water systems, and various pipeline areas requiring temperature-controlled fluid transport and shut-off functionality. Its design relies on core theories such as fluid dynamics and heat transfer, enabling precise temperature control and monitoring of the sealing status, promptly detecting leakage problems in butterfly valves, gate valves, and other valves within the system. In this embodiment, the valve body 1 is preferably installed in the insulated pipeline between the energy output end and the energy consumption end of the system. For example, when the temperature-controlled fluid is transported along the insulated pipeline, the fluid temperature in the pipe section between the radiator and the heat source / cold source can remain constant, and the valve can be installed in this pipe section. When the valve is closed and properly sealed: one side of the valve (near the heat source / cold source side) maintains the heat source temperature, while the other side (near the radiator side) gradually cools due to natural heat dissipation, thus forming a stable temperature difference; however, when the valve is closed but leakage occurs: the constant-temperature fluid leaks from the high-pressure side to the low-pressure side, causing the temperatures on both sides to rapidly converge, and the temperature difference disappears. Therefore, the purpose of this application can only be achieved when the valve of this embodiment needs to be installed on a pipe section with a detectable temperature difference between its upstream and downstream sides and fully meets the following three conditions: ① When the valve plate is open, the temperature difference is determined by the system operating conditions; ② When the valve plate is closed and the seal is good, the temperature difference is established and maintained; ③ When the valve plate is closed but leakage occurs, the temperature difference tends to disappear.

[0020] In this embodiment, the alarm device 4 includes an alarm, a microprocessor, and a display screen. The first temperature sensor 2 and the second temperature sensor 3 are connected to the input of the microprocessor, and the output of the microprocessor is connected to the alarm and the display screen. Each probe of the first temperature sensor 2 and the second temperature sensor 3 is used to detect the real-time temperature of the medium inside the pipes 5 on both sides of the valve body, and sends the real-time temperature detection value to the microprocessor for display on the screen. The microprocessor calculates the difference between the real-time temperature detection values ​​detected by the first and second temperature sensors, compares the absolute value of the difference with a preset target difference, and if the absolute value of the difference is not less than the target difference, no alarm is needed; otherwise, it is determined that there is internal leakage in the valve body 1, and the alarm is activated. The specific determination method is as follows: When the valve is open (valve plate opens): alarm device 4 is only used to display the detected temperature of the temperature sensors on both sides, and the alarm function is turned off; When the valve is closed (valve plate closed): alarm device 4 displays the temperature on both sides simultaneously and automatically activates the alarm function.

[0021] When the valve is closed, its sealing performance can be judged by the temperature difference: When the seal is good: no fluid passes through the valve, the fluid in the two pipes 5 maintains a temperature difference, the alarm device 4 displays normal, that is, the absolute value of the difference is not less than the target difference; When the sealing is abnormal: fluid leaks from the valve, the fluid temperature on both sides gradually approaches the same, and the temperature difference approaches 0℃. At this time, the alarm device 4 detects the abnormal temperature difference and immediately triggers the alarm to remind the staff to deal with it in time.

[0022] In this embodiment, the alarm device 4 is installed on the handle 12. On the one hand, it does not occupy the space of the valve body 1 itself, that is, there is no need to install temperature sensors or the like inside the valve body. Without changing the structure of the valve body itself, the dual functions of valve temperature detection and sealing monitoring can be realized. On the other hand, it allows the display status to be directly visible, without the need to find additional monitoring points, which greatly improves the efficiency of human-computer interaction.

[0023] In this embodiment, the valve body 1 is installed between the two sections of insulated pipe because the core function of the insulated pipe is to minimize the heat exchange between the fluid inside the pipe and the external environment. This creates conditions for establishing and maintaining a stable and controllable temperature field on both sides of the valve.

[0024] In summary, this embodiment achieves real-time, online monitoring of valve sealing status, effectively overcoming the lag of traditional manual inspections and periodic maintenance. It can promptly detect internal leakage faults caused by wear or corrosion of seals, avoiding continuous energy waste and potential safety accidents. Once the temperature difference between the two sides of the valve approaches zero after it is closed, the system can automatically trigger an alarm, fundamentally changing the outdated method of relying on manual judgment, greatly improving monitoring efficiency and reliability. It is particularly suitable for systems such as district heating and central air conditioning, for early warning of internal leakage and real-time sealing monitoring of valves in pipeline circuits with stable and significant temperature differences.

Claims

1. An intelligent valve with internal leakage diagnosis function, comprising a valve body disposed between two adjacent pipe sections, wherein a valve plate is disposed within the valve body; one end of the valve plate extends out of the valve body and is connected to a handle; characterized in that, Also includes: The first temperature sensor has its probe inserted into the pipe on one side of the valve body to detect the temperature of the medium in that section of the pipe. The second temperature sensor has its probe inserted into the pipe on the other side of the valve body to detect the temperature of the medium in that section of the pipe. An alarm device is installed on the handle and is connected to the first temperature sensor and the second temperature sensor respectively. It is used to determine the sealing performance of the valve plate when it is closed based on the detection values ​​of the first temperature sensor and the second temperature sensor, and to generate an alarm command when the sealing is abnormal.

2. The intelligent valve with internal leakage diagnosis function according to claim 1, characterized in that, The alarm device includes an alarm and a microprocessor. The first temperature sensor and the second temperature sensor are connected to the input terminal of the microprocessor, and the output terminal of the microprocessor is connected to the alarm.

3. The intelligent valve with internal leakage diagnosis function according to claim 2, characterized in that, The alarm device also includes a display screen for displaying the real-time temperature detection values ​​of the first temperature sensor and the second temperature sensor.

4. The intelligent valve with internal leakage diagnosis function according to claim 3, characterized in that, When the valve plate is open, the alarm device is only used to display the real-time temperature detection values ​​of the probes on both sides, and the alarm function is turned off; when the valve plate is closed, the alarm device is used to display the real-time temperature detection values ​​of the probes on both sides and automatically turns on the alarm function.

5. The intelligent valve with internal leakage diagnosis function according to claim 4, characterized in that, When the valve plate is closed, the microprocessor obtains the difference between the real-time temperature detection values ​​detected by the first temperature sensor and the second temperature sensor, compares the absolute value of the difference with a preset target difference, and if the absolute value of the difference is not less than the target difference, no alarm is required; otherwise, it is determined that there is a leak in the valve body, and the alarm is activated.

6. The intelligent valve with internal leakage diagnosis function according to any one of claims 1 to 5, characterized in that, The pipeline is an insulated pipeline.

7. The intelligent valve with internal leakage diagnosis function according to any one of claims 1 to 5, characterized in that, The valve body is installed on a pipe section with a detectable temperature difference between its upstream and downstream sides; wherein, When the valve plate is open, the temperature difference is determined by the system operating conditions; When the valve plate is closed and the seal is good, this temperature difference is established and maintained; When the valve plate is closed but a leak occurs, the temperature difference tends to disappear.

8. The intelligent valve with internal leakage diagnosis function according to claim 7, characterized in that, The valve body is installed in the insulated pipe between the energy output end and the energy consumption end of the system.

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