Guide rail type electric energy meter with protection function and regulation and control method thereof

Abstract

The invention provides a guide rail type electric energy meter with a protection function and a regulation and control method thereof.The electric energy meter comprises a shell and a control panel installed in the shell, and the control panel is electrically connected with a display screen, a gas detection module, a temperature and gas pressure sensor module and a wire pressing assembly which are installed in the shell; a pressure release valve is also arranged on the shell; the cable pressing assembly comprises a fixed block installed in the shell, a movable block installed on the fixed block, a pressing block installed on the movable block and a supporting plate which fixes the pressing block and is installed in the shell, through the design of the cable pressing assembly, stable pressing of a cable is achieved, the problem of heating caused by virtual connection is avoided, and the service life of the cable is prolonged. Therefore, fire hazards caused by poor contact are effectively prevented. The design of the wire pressing assembly enables the cable to be placed in the U-shaped groove in a hidden manner while being pressed, thereby not only improving the safety of electrical connection, but also enhancing the insulation protection and concealment.

Description

Technical Field

[0001] The invention relates to a guide rail type electric energy meter with a protection function and a control method thereof, and in particular to the field of electric energy meters. Background Art

[0002] With the development of power systems and technological advancement, electric energy meters, as important metering equipment in power grids, not only need to have accurate metering functions, but also need to have certain protection performance to adapt to different usage environments.

[0003] Traditional electricity meters are relatively simple in design and usually only focus on basic electricity metering functions. However, in actual applications, especially in outdoor or industrial environments, electricity meters face more complex working conditions, such as extreme climates, corrosive gases, high voltages, etc., which will affect the normal operation of the electricity meters.

[0004] During the use of the electric energy meter, on the one hand, it is necessary to ensure that the electric energy meter can resist the influence of the external environment, such as dust and water resistance, and anti-electromagnetic interference; on the other hand, it is necessary to consider the internal safety of the electric energy meter, such as preventing failures caused by overheating of internal components or excessive pressure.

[0005] The connection between the cable and the electric energy meter usually relies on the traditional screw fixing method. Although this method is simple and easy to use, it has many problems in practical applications. When the cable is tightened by the screw, due to the lack of precise position control mechanism, the position of the cable at the connection point may not be fixed. Once it is loose, it is easy to form a poor contact, which will not only lead to unstable electrical connection, but also cause local heating due to increased resistance, and even cause fire accidents in severe cases.

[0006] In addition, the traditional screw tightening method has a significant problem, namely conductivity. If the cable is fixed directly by screws without proper insulation protection measures, then when the external environment changes or improper operation occurs, leakage accidents may occur. Especially in humid or dusty environments, exposed metal parts can easily become a safety hazard, posing a potential threat to the user's life and property. Summary of the invention

[0007] Purpose of the invention: One purpose is to propose a rail-type electric energy meter with a protective function to solve the above-mentioned problems existing in the prior art; a further purpose is to propose a control method for a rail-type electric energy meter with a protective function.

[0008] Technical solution: A guide rail type electric energy meter with protection function, comprising:

[0009] A housing, a control panel installed in the housing, the control panel being electrically connected to and installed in the housing are a display screen, a gas detection module, a temperature and pressure sensor module, and a wire pressing assembly, and the housing is also provided with a pressure relief valve;

[0010] The wire pressing assembly includes a fixed block installed in the housing, a moving block installed on the fixed block, a pressing block installed on the moving block, and a support plate that fixes the pressing block and is installed in the housing.

[0011] The movable block and the fixed block are provided with grooves penetrating the shell.

[0012] The moving block is provided with a pull rod passing through the housing, arc grooves and U-shaped grooves are provided on both sides of the groove of the moving block, a conductive pressure plate and a conductive pressure rod passing through the moving block and connected to the conductive plate pressure plate are provided in the groove of the moving block, a limit ring is sleeved on the conductive pressure rod, and a spring is provided between the limit ring and the moving block.

[0013] The pressing block is provided with a trapezoidal groove for adjusting the height of the conductive voltage rod, and the trapezoidal groove is also provided with a conductive sheet electrically connected to the control board;

[0014] The pressure relief valve comprises a bolt threadedly connected to the housing and a sealing ring sleeved on the bolt, wherein the bolt is provided with a plurality of air holes interconnected with each other.

[0015] In a further embodiment, the wire pressing assembly is provided in plurality, the moving block is slidably matched with the fixed block and the pressing block respectively, the bolt is threadedly connected with the housing, and the display screen is sealed with the housing.

[0016] In a further embodiment, the fixing block is connected to the outer shell by screws, the clamping block is connected to the support plate by screws, the outer shell is provided with a guide groove on the same side of the screw hole, and a buckle passing through the outer shell is provided in the guide groove.

[0017] In a further embodiment, the conductive voltage plate is placed in the groove, the conductive voltage plate is slidably matched with the moving block, the conductive voltage plate is fixedly connected to the conductive voltage rod, and the arc groove and the U-shaped groove are both connected to the groove.

[0018] In a further embodiment, the limiting ring is snap-fitted with the conductive voltage rod, and the conductive sheet is embedded in the trapezoidal groove.

[0019] In a further embodiment, the control panel includes a control panel for setting the operating parameters of the electric energy meter, a power module for providing a stable power supply to the electric energy meter, a communication module for remote data transmission, a metering module for calculating the electric energy consumption based on the current and voltage signals, a backup power supply for providing a starting power supply, and a signal processing module for performing preliminary processing of the current and voltage signals.

[0020] A control method for a rail-type electric energy meter with a protection function, used to implement the rail-type electric energy meter with a protection function, comprises the following steps:

[0021] First, align the guide groove in the housing with the guide rod installed at the set position, move the buckle to make the guide groove match the guide rod, loosen the buckle and lock the guide rod to fix the housing on the guide rod. When pressing the wire, insert the cable into the groove and contact the conductive pressure plate, and then push the pull rod to move the moving block on the fixed block. At this time, the grooves of the moving block and the fixed block will be misaligned, causing the cable to bend and hide in the U-shaped groove. When the moving block moves, the conductive pressure rod will move in the trapezoidal groove. During the movement, the conductive pressure rod drops to cause the conductive pressure plate to press the cable, so that the cable is bent and pressed tightly;

[0022] When the compressed cable needs to be removed, the pull rod is pulled. The conductive pressure rod moves along the direction of the trapezoidal groove under the action of the spring. At this time, the conductive pressure plate is lifted, and then the arc groove scoops up the bent cable, making it easy to remove the cable;

[0023] When the air tightness of the housing needs to be adjusted, the bolts are rotated so that the bolts squeeze the sealing ring and the sealing ring covers the through hole to complete the sealing of the housing;

[0024] When the pressure inside and outside the shell needs to be constant, the bolts are turned so that the sealing ring does not cover the through hole, thereby completing the semi-sealing of the shell;

[0025] The gas detection module collects the gas concentration value generated by the operation of the components inside the shell through the gas sensor, and sends the gas concentration value to the control board through the communication interface. At the same time, the temperature and pressure sensor module collects the temperature generated by the operation of the components inside the shell, as well as the air pressure data inside the shell, and sends the data to the control board through the communication interface. After the control board receives the concentration value, air pressure value, and temperature value of the current internal environment of the shell, it uses the temperature and pressure compensation formula:

[0026]

[0027] Where: M represents the molar mass of the gas, ppm represents the concentration of the gas, T represents the actual temperature during measurement, Ba represents the actual atmospheric pressure during measurement, 22.4 represents the volume of 1 mole of ideal gas under standard conditions, and 273 represents the absolute temperature under standard conditions;

[0028] Correct the gas concentration value of the current environment, and then transfer the processed gas concentration interface to the communication module to complete the real-time collection of the internal concentration value, air pressure value, and temperature value of the electric energy meter;

[0029] When the gas concentration exceeds the preset maximum safety alarm value, it indicates that the electric energy meter seal is faulty, and then shuts down the electric energy meter. At the same time, the reserve power supply is used to send the alarm signal generated by the fault to the communication module.

[0030] When the air pressure value exceeds the preset maximum safety alarm value, it will prompt that the pressure inside the electric energy meter exceeds the set value, and prompt to adjust the bolts to balance the air pressure inside and outside the shell, turn off the electric energy meter at the same time, and use the reserve power supply to send the alarm signal generated by the fault to the communication module;

[0031] When the temperature value exceeds the preset maximum safety alarm value, it indicates that the internal components of the electric energy meter are in an overload or fault state, and the electric energy meter is shut down. The reserve power supply is used to send the alarm signal generated by the fault to the communication module.

[0032] Beneficial effects: The present invention proposes a guide rail type electric energy meter with protective function and a control method thereof. Through the design of the wire pressing assembly, the cable is firmly pressed, the heating problem caused by virtual connection is avoided, and the fire hazard caused by poor contact is effectively prevented; the design of the wire pressing assembly enables the cable to be concealed in the U-shaped groove while being pressed, which not only improves the safety of the electrical connection, but also enhances the insulation protection and concealment; the shell provides overall structural support, protects the internal electronic components from the influence of the external environment, and enhances the protection performance through the sealing design; the control panel is responsible for receiving data from each module, and processing and making decisions; the display screen displays the working status and related information of the electric energy meter, which is convenient for users View and manage; the gas detection module monitors the gas concentration in the internal environment of the electricity meter to prevent safety problems caused by gas leakage; the temperature and pressure sensor module collects the temperature and pressure data inside the electricity meter, and assists the control board in determining whether measures need to be taken to adjust the working status; the wire pressing assembly includes a fixed block, a moving block, a clamping block, a support plate, a conductive plate, a conductive rod, a limit ring and a spring, which work together to firmly clamp the cable and ensure the safety and concealment of the cable connection; the pressure relief valve can adjust the pressure inside the electricity meter when necessary through the design of bolts and sealing rings, while maintaining good sealing to prevent the intrusion of external pollutants; the communication module realizes the remote data transmission function, which is convenient for remote monitoring and fault diagnosis. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a half-cutaway perspective schematic diagram of the electric energy meter of the present invention.

[0034] Figure 2 It is a three-dimensional diagram of the electric energy meter of the present invention.

[0035] Figure 3 It is a bottom view of the electric energy meter of the present invention.

[0036] Figure 4 It is a cross-sectional view of the screw hole of the electric energy meter of the present invention.

[0037] Figure 5 It is a schematic diagram of the compression block of the electric energy meter of the present invention.

[0038] Figure 6 It is a schematic diagram of the moving block of the electric energy meter of the present invention.

[0039] Figure 7 It is a schematic diagram of the fixing block of the electric energy meter of the present invention.

[0040] Figure 8 It is a half-section schematic diagram of the compression block of the electric energy meter of the present invention.

[0041] Fig. 9 It is a half-section schematic diagram of the moving block of the electric energy meter of the present invention.

[0042] Fig.10 It is a half-section schematic diagram of the fixing block of the electric energy meter of the present invention.

[0043] Fig.11 It is a half-section schematic diagram of the bolts of the electric energy meter of the present invention.

[0044] Fig.12 It is a structural block diagram of the control panel of the present invention.

[0045] The accompanying drawings are marked as follows: 1. housing; 11. display screen; 12. control panel; 13. support plate; 14. fixed block; 15. moving block; 16. clamping block; 17. through hole; 18. screw hole; 19. bolt; 20. sealing ring; 21. guide groove; 22. buckle; 151. pressure rod; 152. limiting ring; 153. spring; 154. conductive plate; 155. U-shaped groove; 156. arc groove; 157. pull rod; 161. trapezoidal groove; 191. air hole. DETAILED DESCRIPTION

[0046] In order to solve the problems existing in the prior art, the present invention realizes the protection of the electric energy meter and the insulation protection and concealment of the connection between the electric energy meter and the cable through a guide rail type electric energy meter with a protective function and a control method thereof.

[0047] The present invention will be further described in detail below through embodiments and in conjunction with the accompanying drawings.

[0048] In this application, we propose a guide rail type electric energy meter with a protection function and a control method thereof, wherein the guide rail type electric energy meter with a protection function includes:

[0049] A housing 1, a control panel 12 installed in the housing 1, the control panel 12 is electrically connected to and installed in the housing 1 a display screen 11, a gas detection module, a temperature and pressure sensor module and a wire crimping assembly, and the housing 1 is also provided with a pressure relief valve; the display screen 11 is sealed with the housing 1, and the control panel 12 includes a control panel for setting working parameters of the electric energy meter, a power module for providing a stable power supply to the electric energy meter, a communication module for remote data transmission, a metering module for calculating the electric energy consumption according to the current and voltage signals, a backup power supply for providing a starting power supply, and a signal processing module for performing preliminary processing on the current and voltage signals.

[0050] The crimping assembly is provided with multiple components, including a fixed block 14 installed in the shell 1, a moving block 15 installed on the fixed block 14, a clamping block 16 installed on the moving block 15, and a support plate 13 that fixes the clamping block 16 and is installed in the shell 1, the fixed block 14 is connected to the shell 1 by screws, the clamping block 16 is connected to the support plate 13 by screws, the shell 1 is provided with a guide groove 21 on the same side of the screw hole 18, and a buckle 22 that passes through the shell 1 is provided in the guide groove 21; the moving block 15 and the fixed block 14 are provided with grooves that penetrate the shell 1, and the moving block 15 is slidably matched with the fixed block 14 and the clamping block 16 respectively.

[0051] The moving block 15 is provided with a pull rod 157 passing through the shell 1, and arc grooves 156 and U-shaped grooves 155 are opened on both sides of the groove of the moving block 15. A conductive voltage plate 154 and a conductive voltage rod 151 passing through the moving block 15 and connected to the conductive plate pressure plate are provided in the groove of the moving block 15. A limiting ring 152 is sleeved on the conductive voltage rod 151, and a spring 153 is provided between the limiting ring 152 and the moving block 15. The conductive voltage plate 154 is placed in the groove, and the conductive voltage plate 154 is slidably matched with the moving block 15. The conductive voltage plate 154 is fixedly connected to the conductive voltage rod 151, and the arc groove 156 and the U-shaped groove 155 are both connected to the groove. The limiting ring 152 is snap-fitted with the conductive voltage rod 151, and the conductive sheet is embedded in the trapezoidal groove 161.

[0052] A trapezoidal groove 161 for adjusting the height of the conductive voltage rod 151 is provided in the clamping block 16, and a conductive sheet electrically connected to the control board 12 is also provided in the trapezoidal groove 161; the pressure relief valve includes a bolt 19 threadedly connected to the housing 1, and a sealing ring 20 sleeved on the bolt 19, the bolt 19 is threadedly connected to the housing 1, and the bolt 19 has a plurality of air holes 191 that are interconnected.

[0053] A control method for a rail-type electric energy meter with a protection function, used to implement the rail-type electric energy meter with a protection function, comprises the following:

[0054] First, align the guide groove 21 in the housing 1 with the guide rod installed at the set position, move the buckle 22 to make the guide groove 21 cooperate with the guide rod, release the buckle 22 and lock the guide rod to fix the housing 1 on the guide rod. When pressing the wire, insert the cable into the groove and contact the conductive voltage plate 154, and then push the pull rod 157 to move the moving block 15 on the fixed block 14. At this time, the grooves of the moving block 15 and the fixed block 14 will be misaligned, so that the cable will be bent and hidden in the U-shaped groove 155. When the moving block 15 moves, the conductive voltage rod 151 will move in the trapezoidal groove 161. During the movement, the conductive voltage rod 151 drops so that the conductive voltage plate 154 presses the cable, so that the cable is bent and pressed tightly;

[0055] When the compressed cable needs to be removed, the pull rod 157 is pulled, and the conductive pressure rod 151 moves along the direction of the trapezoidal groove 161 under the action of the spring 153. At this time, the conductive pressure plate 154 is lifted, and then the arc groove 156 scoops up the bent cable, making it easy to remove the cable;

[0056] When the air tightness of the housing 1 needs to be adjusted, the bolt 19 is rotated to squeeze the sealing ring 20, and the sealing ring 20 covers the through hole 17, so as to complete the sealing of the housing 1 and block the entry of gas;

[0057] When the pressure inside and outside the housing 1 needs to be constant, the bolt 19 is rotated so that the sealing ring 20 does not cover the through hole 17, thereby completing the semi-sealing of the housing 1 and preventing solid or liquid contaminants from entering;

[0058] The gas detection module collects the gas concentration value generated by the operation of the components inside the current shell 1 through the gas sensor, and sends the gas concentration value to the control board 12 through the communication interface. At the same time, the temperature and pressure sensor module collects the temperature generated by the operation of the components inside the current shell 1, as well as the air pressure data inside the shell 1, and sends the data to the control board 12 through the communication interface. After the control board 12 receives the concentration value, air pressure value, and temperature value of the current internal environment of the shell 1, it uses the temperature and pressure compensation formula:

[0059]

[0060] Where: M represents the molar mass of the gas, ppm represents the concentration of the gas, T represents the actual temperature during measurement, Ba represents the actual atmospheric pressure during measurement, 22.4 represents the volume of 1 mole of ideal gas under standard conditions (0°C, 101325Pa), and 273 represents the absolute temperature under standard conditions;

[0061] Correct the gas concentration value of the current environment, and then transfer the processed gas concentration interface to the communication module to complete the real-time collection of the internal concentration value, air pressure value, and temperature value of the electric energy meter;

[0062] When the gas concentration exceeds the preset maximum safety alarm value, it indicates that the electric energy meter seal is faulty, and then shuts down the electric energy meter. At the same time, the reserve power supply is used to send the alarm signal generated by the fault to the communication module.

[0063] When the air pressure value exceeds the preset maximum safety alarm value, it prompts that the pressure inside the electric energy meter exceeds the set value, and prompts to adjust the bolt 19 to balance the air pressure inside and outside the shell 1, and at the same time shut down the electric energy meter, and use the reserve power supply to send the alarm signal generated by the fault to the communication module;

[0064] When the temperature value exceeds the preset maximum safety alarm value, it indicates that the internal components of the electric energy meter are in an overload or fault state, and the electric energy meter is shut down. The reserve power supply is used to send the alarm signal generated by the fault to the communication module.

[0065] As described above, although the present invention has been shown and described with reference to specific preferred embodiments, it should not be construed as limiting the present invention itself. Various changes may be made to it in form and detail without departing from the spirit and scope of the present invention as defined in the appended claims.

Claims

1. A guide rail type electric energy meter with protection function, comprising: A housing, a control panel installed in the housing, the control panel being electrically connected to and installed in the housing are a display screen, a gas detection module, a temperature and pressure sensor module, and a wire pressing assembly, and the housing is also provided with a pressure relief valve; It is characterized in that the wire pressing assembly includes a fixed block installed in the shell, a moving block installed on the fixed block, a pressing block installed on the moving block, and a support plate that fixes the pressing block and is installed in the shell. The movable block and the fixed block are provided with grooves penetrating the shell. The moving block is provided with a pull rod passing through the housing, arc grooves and U-shaped grooves are provided on both sides of the groove of the moving block, a conductive pressure plate and a conductive pressure rod passing through the moving block and connected to the conductive plate pressure plate are provided in the groove of the moving block, a limit ring is sleeved on the conductive pressure rod, and a spring is provided between the limit ring and the moving block. The pressing block is provided with a trapezoidal groove for adjusting the height of the conductive voltage rod, and the trapezoidal groove is also provided with a conductive sheet electrically connected to the control board; The pressure relief valve comprises a bolt threadedly connected to the housing and a sealing ring sleeved on the bolt, wherein the bolt is provided with a plurality of air holes interconnected with each other.

2. A guide rail type electric energy meter with protection function according to claim 1, characterized in that: The wire pressing assembly is provided with a plurality of them, the moving blocks are respectively slidably matched with the fixed blocks and the pressing blocks, the bolts are threadedly connected with the housing, and the display screen is sealed with the housing.

3. The guide rail type electric energy meter with protection function according to claim 1, characterized in that: The fixing block is connected to the shell by screws, the pressing block is connected to the support plate by screws, the shell is provided with a guide groove on the same side of the screw hole, and a buckle passing through the shell is provided in the guide groove.

4. The guide rail type electric energy meter with protection function according to claim 1, characterized in that: The conductive voltage plate is placed in the groove, the conductive voltage plate is slidably matched with the moving block, the conductive voltage plate is fixedly connected with the conductive voltage rod, and the arc groove and the U-shaped groove are both connected with the groove.

5. The guide rail type electric energy meter with protection function according to claim 1, characterized in that: The limiting ring is buckled with the conductive voltage rod, and the conductive sheet is embedded in the trapezoidal groove.

6. The guide rail type electric energy meter with protection function according to claim 1, characterized in that: The control panel includes a control panel for setting the working parameters of the electric energy meter, a power module for providing a stable power supply to the electric energy meter, a communication module for remote data transmission, a metering module for calculating the electric energy consumption according to the current and voltage signals, a backup power supply for providing the starting power supply and a signal processing module for performing preliminary processing on the current and voltage signals.

7. A control method for a rail-type electric energy meter with a protection function, used to implement the rail-type electric energy meter with a protection function as described in any one of claims 1 to 6, characterized in that: The steps include: First, align the guide groove in the housing with the guide rod installed at the set position, move the buckle to make the guide groove match the guide rod, loosen the buckle and lock the guide rod to fix the housing on the guide rod. When pressing the wire, insert the cable into the groove and contact the conductive pressure plate, and then push the pull rod to move the moving block on the fixed block. At this time, the grooves of the moving block and the fixed block will be misaligned, causing the cable to bend and hide in the U-shaped groove. When the moving block moves, the conductive pressure rod will move in the trapezoidal groove. During the movement, the conductive pressure rod drops to cause the conductive pressure plate to press the cable, so that the cable is bent and pressed tightly; When the compressed cable needs to be removed, the pull rod is pulled. The conductive pressure rod moves along the direction of the trapezoidal groove under the action of the spring. At this time, the conductive pressure plate is lifted, and then the arc groove scoops up the bent cable, making it easy to remove the cable; When the air tightness of the housing needs to be adjusted, the bolts are rotated so that the bolts squeeze the sealing ring and the sealing ring covers the through hole to complete the sealing of the housing; When the pressure inside and outside the shell needs to be constant, the bolts are turned so that the sealing ring does not cover the through hole, thereby completing the semi-sealing of the shell; The gas detection module collects the gas concentration value generated by the operation of the components inside the shell through the gas sensor, and sends the gas concentration value to the control board through the communication interface. At the same time, the temperature and pressure sensor module collects the temperature generated by the operation of the components inside the shell, as well as the air pressure data inside the shell, and sends the data to the control board through the communication interface. After the control board receives the concentration value, air pressure value, and temperature value of the current internal environment of the shell, it uses the temperature and pressure compensation formula: Where: M represents the molar mass of the gas, ppm represents the concentration of the gas, T represents the actual temperature during measurement, Ba represents the actual atmospheric pressure during measurement, 22.4 represents the volume of 1 mole of ideal gas under standard conditions, and 273 represents the absolute temperature under standard conditions; Correct the gas concentration value of the current environment, and then transfer the processed gas concentration interface to the communication module to complete the real-time collection of the concentration value, air pressure value, and temperature value inside the electric energy meter; When the gas concentration exceeds the preset maximum safety alarm value, it indicates that the electric energy meter seal is faulty, and then shuts down the electric energy meter. At the same time, the reserve power supply is used to send the alarm signal generated by the fault to the communication module. When the air pressure value exceeds the preset maximum safety alarm value, it will prompt that the pressure inside the electric energy meter exceeds the set value, and prompt to adjust the bolts to balance the air pressure inside and outside the shell, turn off the electric energy meter at the same time, and use the reserve power supply to send the alarm signal generated by the fault to the communication module; When the temperature value exceeds the preset maximum safety alarm value, it indicates that the internal components of the electric energy meter are in an overload or fault state, and the electric energy meter is shut down. The reserve power supply is used to send the alarm signal generated by the fault to the communication module.

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