Electric quantity isolation equipment with anti-thunder and anti-interference structure

Abstract

The utility model discloses an electric quantity isolation device with an anti-thunder anti-interference structure, which comprises a connecting seat, an isolator body, an anti-interference protective cover and an anti-thunder assembly, the isolator body is arranged on the upper end face of the connecting seat, and first threaded holes are formed below the front end and the rear end of the isolator body; the anti-interference protective cover is arranged on the outer surface of the isolator body, first bolts are arranged below the front end and the rear end of the anti-interference protective cover, and the lightning protection assemblies are arranged on the two sides of the wiring end respectively. According to the electric quantity isolation equipment with the anti-thunder and anti-interference structure, lightning stroke can cause short circuit of a line interface, electric spark generation and equipment damage, the electric spark generated at the line interface is blocked through the anti-thunder assembly, the electric spark is prevented from affecting surrounding equipment or circuits, chain damage of the electric spark generated by the lightning stroke to the equipment is avoided, and the service life of the equipment is prolonged. The anti-interference protective cover has good electromagnetic shielding performance, can effectively block external electromagnetic interference, and protects an internal circuit of the sensor from being interfered.

Description

Technical Field

[0001] The utility model relates to the technical field of electric quantity isolation sensors, in particular to electric quantity isolation equipment with an anti-lightning and anti-interference structure. Background Art

[0002] The electric quantity isolation sensor / transmitter is a small-volume, high-performance electric signal measurement component or module developed for the purpose of detecting (monitoring) electric quantity in engineering and improving the overall anti-interference ability of the system. The electric quantity isolation sensor / transmitter can isolate, measure and transform the electric parameters such as high current, high voltage, power, frequency, phase angle, electric degree, etc. on site, and can also isolate, amplify and transform various weak signals (such as various bridge signals), and after conditioning, transform them into analog signals such as voltage and electric rate that meet international standards or transform them into digital quantity, switch quantity status and other signal outputs.

[0003] For example, the patent document with application number 201510595501.3 discloses a power isolation sensor, including a PWM closed-loop modulation circuit, which is used to generate a PWM modulation signal based on a DC input signal and adopts closed-loop control: a transformer, which is used to couple the pulse width information in the PWM modulation signal to the PWM demodulation circuit; and a PWM demodulation circuit, which is used to demodulate the pulse width information to obtain and output a DC output signal. The power isolation sensor provided by the present invention adopts a closed-loop PWM modulation method to realize linear pulse width modulation of the DC input signal to the PWM modulation signal, thereby realizing high isolation of the power isolation sensor and improving the accuracy and reliability of the power isolation sensor.

[0004] Similar electrical isolation sensors will generate high-voltage pulses when lightning strikes, and the charge in the interface circuit will accumulate rapidly, causing the electric field strength to increase. When the electric field strength reaches a certain level, the molecules in the air will be excited and react chemically to form bright electric sparks. The energy and heat released are very large, which can instantly generate high temperature and high pressure, causing instantaneous destruction or damage to the interface circuit. The electric sparks will spread to surrounding equipment, causing greater losses. The electromagnetic field generated by the lightning strike will radiate and propagate in the form of electromagnetic waves, penetrating the air and objects, and affecting internal electronic components.

[0005] Therefore, in view of this, the existing structural deficiencies are studied and improved, and an electrical isolation device with a lightning and interference protection structure is proposed. Utility Model Content

[0006] The purpose of the utility model is to provide an electrical isolation device with an anti-lightning and anti-interference structure. When a lightning strike occurs, a high-voltage pulse will be generated, and the charge in the interface line will accumulate rapidly, resulting in an increase in the electric field strength. When the electric field strength reaches a certain level, the molecules in the air will be excited and chemically react to form bright electric sparks. The released energy and heat are very large, and high temperature and high pressure can be generated in an instant, causing instantaneous destruction or damage to the interface line. The electric sparks will spread to surrounding equipment, thereby causing greater losses. The electromagnetic field generated by the lightning strike will radiate and propagate in the form of electromagnetic waves, penetrating the air and objects, and affecting the internal electronic components.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an electrical isolation device with an anti-lightning and anti-interference structure, comprising a connecting seat, an isolator body, an anti-interference protective cover and a lightning protection component, the isolator body is arranged on the upper end surface of the connecting seat, and the lower ends of both sides of the isolator body are provided with wiring terminals, and first threaded holes are opened below the front and rear ends of the isolator body, the anti-interference protective cover is arranged on the outer surface of the isolator body, and first bolts are arranged below the front and rear ends of the anti-interference protective cover, and rotating pins are arranged above the two groups of the wiring terminals, and the lightning protection components are respectively arranged on both sides of the wiring terminals, and two groups of lightning protection components are provided.

[0008] Furthermore, the lightning protection assembly includes an upper shell, a line hole, a connecting plate, a second bolt, an insulating fireproof layer, a lower shell and a second threaded hole. The upper shell is connected to the two groups of rotating pins through a rotating shaft. A lower shell is arranged at the lower end of the upper shell. Line holes are arranged at the edges between the upper shell and the lower shell. Connecting plates are arranged on both sides of the upper shell and the lower shell, wherein the inner cavities of the two groups of connecting plates are arranged with second bolts, and the inner surfaces of the other two groups of connecting plates are opened with second threaded holes, and the inner surfaces of the upper shell and the lower shell are arranged with insulating fireproof layers.

[0009] Furthermore, the first bolt and the first threaded hole have the same diameter, and the first bolt is engaged with the first threaded hole by penetrating the anti-interference protective cover.

[0010] Furthermore, the bottom end surface of the upper shell body and the upper end surface of the lower shell body abut against each other, and every two groups of circuit holes form a complete group of circular holes.

[0011] Furthermore, the surface material of the insulating fireproof layer is silicone, and the surface material of the anti-interference protective cover is aluminum alloy.

[0012] Furthermore, the second bolt passes through the two groups of connecting plates in sequence, and the second bolt is engaged with the second threaded hole.

[0013] Compared with the prior art, the utility model has the following beneficial effects: lightning strikes can cause short circuits in line interfaces, generate electric sparks, and thus damage equipment. The lightning protection component can block the sparks generated at the line interfaces to prevent the sparks from spreading to surrounding equipment or circuits, thereby avoiding chain damage to equipment caused by the sparks generated by lightning strikes. The anti-interference protective cover has good electromagnetic shielding performance, can effectively block external electromagnetic interference, and protect the internal circuit of the sensor from interference. The specific contents are as follows:

[0014] It is equipped with a connecting socket, an isolator body and an anti-interference protective cover. The anti-interference protective cover made of aluminum alloy has good electromagnetic shielding performance, which can effectively isolate the interference of external lightning strikes or other electromagnetic waves on the internal circuit of the sensor, protect the electronic components inside the power isolation device from damage, and ensure that the sensor can still work normally in harsh environments.

[0015] A wiring terminal and a lightning protection component are provided. The upper shell and the lower shell form a group of protective structures, which cover the lines and interfaces at the wiring terminals to form an effective protective layer. The lines pass through the line holes and are connected to the wiring terminals of the equipment. One end of the line is limited and engaged with the second threaded hole in the connecting plate through a second bolt, so that the upper shell and the lower shell are fixed on both sides. The second bolt only needs to be rotated to install the second threaded hole in the inner cavity of the connecting plate to fix it. When a lightning strike occurs, the insulating fireproof layer in the protective structure composed of the upper shell and the lower shell plays a role in blocking electric sparks, preventing the electric sparks from spreading to surrounding equipment or circuits, thereby avoiding chain damage caused by lightning strikes. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a three-dimensional structural schematic diagram of an electric quantity isolation device with a lightning and interference prevention structure according to the utility model;

[0017] Figure 2 It is a three-dimensional structural schematic diagram of a connection terminal of an electric quantity isolation device with a lightning and interference prevention structure according to the utility model;

[0018] Figure 3 This is a schematic diagram of the expanded three-dimensional structure of an electric quantity isolation device with a lightning and interference prevention structure according to the utility model;

[0019] Figure 4 It is a schematic diagram of the cross-sectional three-dimensional structure of a lightning protection component of an electrical isolation device with an anti-lightning and anti-interference structure according to the utility model.

[0020] Figure 5 The utility model is a three-dimensional structural schematic diagram of an anti-interference protective cover of an electric quantity isolation device with an anti-lightning and anti-interference structure.

[0021] In the figure: 1. connecting seat; 2. isolator body; 3. wiring terminal; 4. first threaded hole; 5. anti-interference protective cover; 6. first bolt; 7. rotating pin; 8. lightning protection component; 801. upper shell; 802. line hole; 803. connecting plate; 804. second bolt; 805. insulating fireproof layer; 806. lower shell; 807. second threaded hole. DETAILED DESCRIPTION

[0022] The following is a further detailed description of the implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but cannot be used to limit the scope of the present invention.

[0023] like Figures 1 to 5 As shown, an electric quantity isolation device with an anti-lightning and anti-interference structure includes a connection seat 1, an isolator body 2, an anti-interference protective cover 5 and a lightning protection component 8. The isolator body 2 is arranged on the upper end surface of the connection seat 1. The isolator body 2 can isolate, measure and transform electrical parameters such as large current, high voltage, power, frequency, phase angle, and electrical degree on site. The connection seat 1 provides support and fixation for connecting the isolator body 2 and the external connection space to ensure the stability of the overall structure. The lower ends of both sides of the isolator body 2 are provided with wiring terminals 3. The wiring terminals 3 on both sides of the isolator body 2 are connected through lines. The anti-interference protective cover 5 is arranged on the outer surface of the isolator body 2. The surface material of the anti-interference protective cover 5 is aluminum alloy. The aluminum alloy material The anti-interference protective cover 5 has good electromagnetic shielding performance, can effectively isolate the interference of external lightning strikes or other electromagnetic waves on the internal circuit of the power isolation device, and protect the electronic components inside the power isolation device from damage. The anti-interference protective cover 5 is provided with a first bolt 6 below the front and rear ends, and the isolator body 2 is provided with a first threaded hole 4 below the front and rear ends. The first bolt 6 and the first threaded hole 4 have the same aperture size. The first bolt 6 penetrates the anti-interference protective cover 5 and engages with the first threaded hole 4. The first bolt 6 engages with the first threaded hole 4 of the isolator body 2, so that the anti-interference protective cover 5 can be fixed on the outer surface of the isolator body 2, thereby facilitating the anti-interference protective cover 5 to protect the isolator body 2;

[0024] The lightning protection components 8 are respectively arranged on both sides of the terminal 3. The lightning protection components 8 are provided with two groups. The lightning protection components 8 include an upper shell 801, a line hole 802, a connecting plate 803, a second bolt 804, an insulating fireproof layer 805, a lower shell 806 and a second threaded hole 807. Rotation pins 7 are arranged above the two groups of terminal 3. The upper shell 801 is connected to the two groups of rotation pins 7 through a rotating shaft. The upper shell 801 can be rotated between the two groups of rotation pins 7 through the rotating shaft, which is convenient for the operator to lift the upper shell 801 to install and replace the internal line. The lower end of the upper shell 801 is provided with a lower shell 8 06, the bottom end surface of the upper shell 801 and the upper end surface of the lower shell 806 are in contact with each other, and the upper shell 801 and the lower shell 806 form the shell of the lightning protection component 8, protecting the internal circuits and components from the external environment, and providing support and fixing functions. The edges between the upper shell 801 and the lower shell 806 are provided with circuit holes 802, and each two groups of circuit holes 802 form a complete set of circular holes. In this way, a set of circular holes formed by two groups of circuit holes 802 allows the circuit connection line to pass through the circuit holes 802 and connect to the terminal 3. Both sides of the upper shell 801 and the lower shell 806 are provided with connecting plates 803 , four groups of connecting plates 803 connect the upper shell 801 and the lower shell 806, appearing around them, to prevent this from happening. The inner cavities of two groups of connecting plates 803 are each provided with a second bolt 804, and the inner surfaces of the other two groups of connecting plates 803 are each provided with a second threaded hole 807. One group of connecting plates 803 of the upper shell 801 matches one group of connecting plates 803 of the lower shell 806, and the two groups of connecting plates 803 are combined together by passing through the second bolt 804. The second bolt 804 passes through the two groups of connecting plates 803 in turn, and the second bolt 804 meshes with the second threaded hole 807. The second bolt 804 is engaged with the second threaded hole 807, so that the second bolt 804 penetrates the connecting plate 803 of the upper shell 801, and then penetrates a set of connecting plates 803 that match the lower shell 806. Since the inner cavity of the lower shell 806 has the second threaded hole 807, the second bolt 804 is fixed to the inner cavity of the connecting plate 803 by rotating. The inner surfaces of the upper shell 801 and the lower shell 806 are both provided with an insulating fireproof layer 805. The surface material of the insulating fireproof layer 805 is silicone. The insulating fireproof layer 805 made of silicone can block the electric sparks caused by the short circuit of the line at the terminal 3 due to lightning strike.

[0025] In summary, if Figures 1 to 5As shown, the electric quantity isolation device with anti-lightning and anti-interference structure, the isolator body 2 is an electric quantity isolation device, which isolates, measures and transforms the electric parameters such as large current, high voltage, power, frequency, phase angle and electric degree on site, and the isolator body 2 is connected to the external device through the connecting seat 1. When a lightning strike occurs, the electromagnetic field generated by the lightning strike will radiate and propagate in the form of electromagnetic waves, penetrate the air and objects, and affect the surrounding electrical equipment and systems. The aluminum alloy anti-interference protective cover 5 physically protects the isolator body 2 and blocks the electromagnetic interference from the outside. The anti-interference protective cover 5 passes through the bottom of the front and rear ends through the first bolt 6, and is engaged with the first threaded hole 4 at the same position of the isolator body 2, so that the anti-interference protective cover 5 can be fixed;

[0026] When electric sparks occur, the upper shell 801 and the lower shell 806 in the lightning protection component 8 form a protective structure. Since the inner surface has an insulating fireproof layer 805, the insulating property and high temperature resistance of the silicone material are utilized to form an insulating barrier when electric sparks are generated by lightning strikes, thereby preventing the conduction of electric sparks and the transfer of heat, thereby preventing the electric sparks from causing damage to surrounding electrical equipment. When installing the line, only the two sets of second bolts 804 need to be rotated and removed along the threads of the second threaded holes 807 in the inner cavities of the two sets of connecting plates 803, so that the upper shell 801 and the lower shell 806 can be separated. The electrical circuit at the terminal 3 is connected and installed, and the circuit is placed in the circuit hole 802 located above the lower shell 806. When the installation or disassembly is completed, the upper shell 801 is rotated along the two sets of rotating pins 7 through the rotating shaft, so that the upper shell 801 can be abutted against the upper end surface of the lower shell 806, and then the second bolt 804 is rotated into the second threaded hole 807 in the same way to install and fix it. The circuit hole 802 at the lower edge of the upper shell 801 and the circuit hole 802 at the upper edge of the lower shell 806 are closed to form a complete set of circular hole structures, and the circuit is limited at the same time.

Claims

1. An electric quantity isolation device with an anti-lightning and anti-interference structure, comprising a connection seat (1), an isolator body (2), an anti-interference protective cover (5) and a lightning protection component (8), characterized in that: The isolator body (2) is arranged on the upper end surface of the connecting seat (1), the lower ends of both sides of the isolator body (2) are provided with wiring terminals (3), the front and rear ends of the isolator body (2) are provided with first threaded holes (4), the anti-interference protective cover (5) is arranged on the outer surface of the isolator body (2), the front and rear ends of the anti-interference protective cover (5) are provided with first bolts (6), the two groups of the wiring terminals (3) are provided with rotating pins (7), the lightning protection components (8) are respectively arranged on both sides of the wiring terminals (3), and two groups of the lightning protection components (8) are provided.

2. The electrical isolation device with lightning protection and interference prevention structure according to claim 1 is characterized in that: The lightning protection assembly (8) comprises an upper shell (801), a line hole (802), a connecting plate (803), a second bolt (804), an insulating fireproof layer (805), a lower shell (806) and a second threaded hole (807); the upper shell (801) is connected to the two groups of rotating pins (7) via a rotating shaft; a lower shell (806) is provided at the lower end of the upper shell (801); the upper shell (801) and the lower shell (806) are connected to each other. A circuit hole (802) is provided at the edge between them, and connecting plates (803) are provided on both sides of the upper shell (801) and the lower shell (806), wherein the inner cavities of the two groups of connecting plates (803) are provided with second bolts (804), and the inner surfaces of the other two groups of connecting plates (803) are provided with second threaded holes (807), and the inner surfaces of the upper shell (801) and the lower shell (806) are provided with insulating fireproof layers (805).

3. The electric quantity isolation device with lightning protection and interference prevention structure according to claim 2 is characterized in that: The first bolt (6) and the first threaded hole (4) have the same diameter, and the first bolt (6) penetrates the anti-interference protective cover (5) to engage with the first threaded hole (4).

4. The electric quantity isolation device with lightning protection and interference prevention structure according to claim 3 is characterized in that: The bottom end surface of the upper shell (801) and the upper end surface of the lower shell (806) are in contact with each other, and every two groups of circuit holes (802) form a complete group of circular holes.

5. The electric quantity isolation device with lightning protection and interference prevention structure according to claim 2 is characterized in that: The material of the surface of the insulating fireproof layer (805) is silica gel, and the material of the surface of the anti-interference protective cover (5) is aluminum alloy.

6. The electrical isolation device with lightning protection and interference prevention structure according to claim 3 is characterized in that: The second bolt (804) passes through the two groups of connecting plates (803) in sequence, and the second bolt (804) is meshed with the second threaded hole (807).

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