Split type electric leakage detection device and detection method

Abstract

The invention relates to a split type electric leakage detection device and a detection method, the device adopts a design of multiple detection chucks, each detection chuck is of an independent structure, and is provided with a respective clamping mechanism and a current sensing element, so that an operator can flexibly select a proper chuck according to the actual arrangement of a wire, and the detection efficiency is improved. The arrangement distance and the arrangement mode between the wires are not limited, so that the operation convenience is greatly improved; and each detection chuck is detachably connected with the meter body, so that maintenance and replacement are facilitated, an operator does not need to adjust the whole device, and the skill requirement on the operator is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of electrical safety detection, and more specifically, to a split type leakage detection device and a detection method. Background Art

[0002] With the increase of electrical safety awareness, leakage detection devices play an important role in household and industrial electricity safety. At present, most leakage detection devices adopt an integrated design, which is difficult to adapt to the arrangement of wires with different spacings. The operation is complicated and has high technical requirements, resulting in insufficient flexibility in use. For example, a portable leakage detection device with patent publication number CN 214669523 U discloses a detection device with such a problem; to meet this demand, a new type of leakage detection device is urgently needed to more effectively detect leakage. Summary of the invention

[0003] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a split leakage detection device and a detection method to solve the problems existing in the above-mentioned background technology.

[0004] The above technical objectives of the present invention are achieved through the following technical solutions: a split type leakage detection device, comprising: a meter body, a first detection chuck, a second detection chuck, a third detection chuck and a fourth detection chuck; the first detection chuck, the second detection chuck, the third detection chuck and the fourth detection chuck are respectively detachably connected to the meter body; the meter body is provided with: a first sensor corresponding to the first detection chuck, a second sensor corresponding to the second detection chuck, a third sensor corresponding to the third detection chuck, a fourth sensor corresponding to the fourth detection chuck, a sampling resistor, a high-precision analog-to-digital converter for converting electrical signals into digital signals and a microcontroller for processing and transmitting the digital signals of the high-precision analog-to-digital converter; when the first detection chuck is in contact with the meter body, When the first detection chuck is connected, the first detection chuck is electrically connected to the detection end of the first sensor; when the second detection chuck is connected to the watch body, the second detection chuck is electrically connected to the detection end of the second sensor; when the third detection chuck is connected to the watch body, the third detection chuck is electrically connected to the detection end of the third sensor; when the fourth detection chuck is connected to the watch body, the third detection chuck is electrically connected to the detection end of the fourth sensor; the output end of the first sensor, the output end of the second sensor, the output end of the third sensor and the output end of the fourth sensor are electrically connected to the sampling resistor respectively; the sampling resistor is electrically connected to the high-precision analog-to-digital converter; the high-precision analog-to-digital converter is electrically connected to the microcontroller.

[0005] Optionally, the first detection chuck includes: a first insulating operating rod, a first mounting seat, a first connecting end, a first clamping ring, a second clamping ring for cooperating with the first clamping ring to clamp a wire, a first elastic clamping claw, a second elastic clamping claw for cooperating with the first elastic clamping claw to make the clamped wire be in the middle position between the first clamping ring and the second clamping ring, a first locking buckle, a first locking block for cooperating with the first locking buckle to lock the relative position of the first clamping ring and the second clamping ring, and a first mutual inductance for sensing the current of the clamped wire; the first insulating operating rod is fixedly connected to one end of the first mounting seat; the first connecting end is fixedly connected to the first mounting seat; the first connecting end is detachably connected to the meter body; when the first connecting end is connected to the meter body, the first connecting end is electrically connected to the first sensor; the The first clamp ring and the second clamp ring are rotatably connected to the other end of the first mounting seat respectively; when the first clamp ring and the second clamp ring are in a closed state, a first detection cavity for clamping and accommodating the wire to be tested is formed; the first mutual inductance is fixedly connected to the first clamp ring and the second clamp ring respectively; the first mutual inductance is electrically connected to the first connecting end; one end of the first elastic clamping claw is slidably connected to the first clamp ring, and the other end is placed in the first detection cavity; one end of the second elastic clamping claw is slidably connected to the second clamp ring, and the other end is placed in the first detection cavity; the first locking buckle is fixedly connected to the first clamp ring; the first locking block is fixedly connected to the second clamp ring; the first locking block can be engaged with the first locking buckle; when the first locking block and the first locking buckle are engaged, the first clamp ring and the second clamp ring are in a closed and relatively static state.

[0006] Optionally, the second detection chuck includes: a second insulating operating rod, a second mounting seat, a second connecting end, a third clamping ring, a fourth clamping ring for cooperating with the third clamping ring to clamp a wire, a third elastic clamping claw, a fourth elastic clamping claw for cooperating with the third elastic clamping claw to make the clamped wire be in the middle position between the third clamping ring and the fourth clamping ring, a second locking buckle, a second locking block for cooperating with the second locking buckle to lock the relative position of the third clamping ring and the fourth clamping ring, and a second mutual inductance for sensing the current of the clamped wire; the second insulating operating rod is fixedly connected to one end of the second mounting seat; the second connecting end is fixedly connected to the second mounting seat; the second connecting end is detachably connected to the meter body; when the second connecting end is connected to the meter body, the second connecting end is electrically connected to the second sensor; the The third clamp ring and the fourth clamp ring are rotatably connected to the other end of the first mounting seat respectively; when the third clamp ring and the fourth clamp ring are in a closed state, a second detection cavity for clamping and placing the wire to be tested is formed; the second mutual inductor is fixedly connected to the third clamp ring and the fourth clamp ring respectively; the second mutual inductor is electrically connected to the second connecting end; one end of the third elastic clamping claw is slidably connected to the third clamp ring, and the other end is placed in the second detection cavity; one end of the fourth elastic clamping claw is slidably connected to the fourth clamp ring, and the other end is placed in the second detection cavity; the second lock buckle is fixedly connected to the third clamp ring; the second locking block is fixedly connected to the fourth clamp ring; the second locking block can be engaged with the second lock buckle; when the second locking block and the second lock buckle are in an engaged state, the third clamp ring and the fourth clamp ring are in a closed and relatively static state.

[0007] Optionally, the third detection chuck includes: a third insulating operating rod, a third mounting seat, a third connecting end, a fifth clamping ring, a sixth clamping ring for cooperating with the fifth clamping ring to clamp a conductor, a fifth elastic clamping claw, a sixth elastic clamping claw for cooperating with the fifth elastic clamping claw to make the clamped conductor be in the middle position between the fifth clamping ring and the sixth clamping ring, a third locking buckle, a third locking block for cooperating with the third locking buckle to lock the relative position of the fifth clamping ring and the sixth clamping ring, and a third mutual inductance for sensing the current of the clamped conductor; the third insulating operating rod is fixedly connected to one end of the third mounting seat; the third connecting end is fixedly connected to the third mounting seat; the third connecting end is detachably connected to the meter body; when the third connecting end is connected to the meter body, the third connecting end is electrically connected to the third sensor; The fifth clamp ring and the sixth clamp ring are rotatably connected to the other end of the third mounting base respectively; when the fifth clamp ring and the sixth clamp ring are in a closed state, a third detection cavity for clamping and placing the wire to be tested is formed; the third mutual inductance is fixedly connected to the fifth clamp ring and the sixth clamp ring respectively; the third mutual inductance is electrically connected to the third connecting end; one end of the fifth elastic clamping claw is slidably connected to the fifth clamp ring, and the other end is placed in the third detection cavity; one end of the sixth elastic clamping claw is slidably connected to the sixth clamp ring, and the other end is placed in the third detection cavity; the third lock buckle is fixedly connected to the fifth clamp ring; the third locking block is fixedly connected to the sixth clamp ring; the third locking block can be engaged with the third lock buckle; when the third locking block and the third lock buckle are in an engaged state, the fifth clamp ring and the sixth clamp ring are in a closed and relatively static state.

[0008] Optionally, the fourth detection chuck includes: a fourth insulating operating rod, a fourth mounting seat, a fourth connecting end, a seventh clamping ring, an eighth clamping ring for cooperating with the seventh clamping ring to clamp a wire, a seventh elastic clamping claw, an eighth elastic clamping claw for cooperating with the seventh elastic clamping claw to make the clamped wire be in the middle position between the seventh clamping ring and the eighth clamping ring, a third locking buckle, a fourth locking block for cooperating with the fourth locking buckle to lock the relative position of the seventh clamping ring and the eighth clamping ring, and a fourth mutual inductance for sensing the current of the clamped wire; the fourth insulating operating rod is fixedly connected to one end of the fourth mounting seat; the fourth connecting end is fixedly connected to the fourth mounting seat; the fourth connecting end is detachably connected to the meter body; when the fourth connecting end is connected to the meter body, the fourth connecting end is electrically connected to the fourth sensor; The seventh clamp ring and the eighth clamp ring are rotatably connected to the fourth mounting seat respectively; when the seventh clamp ring and the eighth clamp ring are in a closed state, a fourth detection cavity for clamping and placing the wire to be tested is formed; the fourth mutual inductor is fixedly connected to the seventh clamp ring and the eighth clamp ring respectively; the fourth mutual inductor is electrically connected to the fourth connecting end; one end of the seventh elastic clamping claw is slidably connected to the seventh clamp ring, and the other end is placed in the fourth detection cavity; one end of the eighth elastic clamping claw is slidably connected to the eighth clamp ring, and the other end is placed in the fourth detection cavity; the fourth lock buckle is fixedly connected to the seventh clamp ring; the fourth locking block is fixedly connected to the eighth clamp ring; the fourth locking block can be engaged with the fourth lock buckle; when the fourth locking block and the fourth lock buckle are in an engaged state, the seventh clamp ring and the eighth clamp ring are in a closed and relatively static state.

[0009] Optionally, the meter body is further provided with: a liquid crystal display screen for displaying detection data; the liquid crystal display screen is fixedly connected to the meter body; and the liquid crystal display screen is electrically connected to the microcontroller.

[0010] Optionally, the watch body is also provided with: a power supply module and a solar charging panel; the solar charging panel is detachably connected to the watch body; the power supply module is detachably connected to the watch body; the power supply module is electrically connected to the high-precision analog-to-digital converter and the microcontroller respectively; the solar panel is electrically connected to the power supply module.

[0011] Optionally, the meter body is further provided with: an adjusting member for adjusting the resistance of the sampling resistor; the adjusting member is rotatably connected to the meter body; the adjusting member is electrically connected to the sampling resistor; the resistance of the sampling resistor is 0.001Ω~0.01Ω.

[0012] Optionally, it is also provided with: an alarm module; the alarm module is detachably connected to the title; the alarm module is electrically connected to the microcontroller; when it is detected that the leakage current exceeds a set threshold, the alarm module emits an audible and visual alarm to prompt the operator.

[0013] A detection method including the above-mentioned split leakage detection device comprises the following steps: S1, connecting the first detection chuck, the second detection chuck, the third detection chuck and the fourth detection chuck to the meter body, and adjusting the sampling resistance through the adjustment member on the meter body; S2, sequentially hooking the first detection chuck, the second detection chuck, the third detection chuck and the fourth detection chuck onto the conductor of the circuit to be detected; S3, the first detection chuck, the second detection chuck, the third detection chuck and the fourth detection chuck transmit the current signal to the sampling resistor, and the high-precision analog-to-digital converter sequentially receives the current signal of the first detection chuck, the current signal of the second detection chuck, the current signal of the third detection chuck and the current signal of the fourth detection chuck passing through the sampling resistor; S4, the high-precision analog-to-digital converter converts the current signal of the first detection chuck, the current signal of the second detection chuck, the current signal of the third detection chuck and the current signal of the fourth detection chuck into digital signals in sequence and transmits them to the microcontroller; S5. The microcontroller receives the digital signal and processes it to obtain the current data of each line on the detection circuit, and compares it with the set threshold value; if it is higher than the set threshold value, it is determined to be a leakage, the data is displayed on the LCD screen, and the alarm module is controlled to emit an audible and visual alarm to prompt the operator; if it is lower than the set threshold value, it is determined to be a normal operation, and the data is displayed on the LCD screen.

[0014] In summary, the present invention has the following beneficial effects: 1. The device adopts a multi-detection chuck design. Each detection chuck is an independent structure with its own clamping mechanism and current sensing element, so that the operator can flexibly select the appropriate chuck according to the actual arrangement of the wires, without being limited to the arrangement spacing and arrangement method between the wires, which greatly improves the convenience of operation; each detection chuck is detachably connected to the meter body for easy maintenance and replacement. The operator does not need to adjust the entire device, which reduces the skill requirements for the operator.

[0015] 2. The device integrates a high-precision analog-to-digital converter, which can convert analog signals into digital signals with high resolution, providing guarantee for subsequent data processing and display; at the same time, the low-resistance sampling resistor (0.001Ω~0.01Ω) effectively reduces the signal loss, thereby improving the detection accuracy.

[0016] 3. The device is equipped with a display and alarm mechanism, which displays the detection data in real time through the LCD screen. When the leakage current exceeds the set threshold, the alarm module can send out an audible and visual alarm to prompt the operator, thereby improving the safety and convenience of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the main structure assembly of the present invention; Figure 2 It is a schematic diagram of the specific structure of the meter body of the present invention; Figure 3 is a schematic diagram of the specific structure of the first detection chuck of the present invention; Figure 4 It is a flow chart of the steps of the detection method in the present invention.

[0018] In the figure: 1. meter body; 2. first detection chuck; 21. first insulating operating rod; 22. first mounting seat; 23. first connecting end; 24. first clamp ring; 241. first locking buckle; 25. second clamp ring; 251. first locking block; 26. first elastic clamping claw; 27. second elastic clamping claw; 28. first mutual inductance; 29. ​​first detection cavity; 3. second detection chuck; 4. third detection chuck; 5. fourth detection chuck; 6. solar charging panel; 7. adjustment member; 8. alarm module; 9. LCD display. DETAILED DESCRIPTION

[0019] In order to make the purpose, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings. Several embodiments of the present invention are shown in the accompanying drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein.

[0020] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal connection of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances. The terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features.

[0021] In the present invention, unless otherwise clearly specified and limited, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, the first feature being "above", "above" and "above" the second feature includes the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature includes the first feature being directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature. The terms "vertical", "horizontal", "left", "right", "above", "below" and similar expressions are for illustrative purposes only, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0022] The present invention is described in detail below in conjunction with the accompanying drawings and embodiments.

[0023] The present invention provides a split type leakage detection device, such as Figure 1 As shown, it comprises: a watch body 1, a first detection chuck 2, a second detection chuck 3, a third detection chuck 4 and a fourth detection chuck 5; the first detection chuck 2, the second detection chuck 3, the third detection chuck 4 and the fourth detection chuck 5 are respectively detachably connected to the watch body 1; the watch body 1 is provided with: a first sensor corresponding to the first detection chuck 2, a second sensor corresponding to the second detection chuck 3, a third sensor corresponding to the third detection chuck 4, a fourth sensor corresponding to the fourth detection chuck 5, a sampling resistor, a high-precision analog-to-digital converter for converting electrical signals into digital signals and a microcontroller for processing and transmitting the digital signals of the high-precision analog-to-digital converter; when the first detection chuck 2 is connected to the watch body 1, the first detection The measuring chuck 2 is electrically connected to the detection end of the first sensor; when the second detecting chuck 3 is connected to the meter body 1, the second detecting chuck 3 is electrically connected to the detection end of the second sensor; when the third detecting chuck 4 is connected to the meter body 1, the third detecting chuck 4 is electrically connected to the detection end of the third sensor; when the fourth detecting chuck 5 is connected to the meter body 1, the third detecting chuck 4 is electrically connected to the detection end of the fourth sensor; the output end of the first sensor, the output end of the second sensor, the output end of the third sensor and the output end of the fourth sensor are electrically connected to the sampling resistor respectively; the sampling resistor is electrically connected to the high-precision analog-to-digital converter; the high-precision analog-to-digital converter is electrically connected to the microcontroller.

[0024] In the first embodiment, the first detection chuck 2, the second detection chuck 3, the third detection chuck 4 and the fourth detection chuck 5 are detachably connected to the meter body 1, so that the leakage detection device is not limited to the arrangement of the wires of the circuit to be tested, and can be adapted to wires with different spacings and different wire diameters. At the same time, each detection chuck is equipped with a sensor. Compared with the traditional method of detecting three-phase four-wires at the same time, this method of detecting each line of the three-phase four-wire separately can make the detected data have smaller errors and higher accuracy; a high-precision analog-to-digital converter is integrated inside the device, which can convert analog signals into digital signals with high resolution, providing guarantee for subsequent data processing and display; the microcontroller processes and analyzes the digital signal to obtain the detection data.

[0025] Optionally, the first sensor, the second sensor, the third sensor and the fourth sensor mentioned above may be sensors capable of detecting current magnitude, such as Hall effect sensors, current sensors, etc. In this embodiment, Hall effect sensors are used.

[0026] Optionally, the meter body 1 is also provided with an extended sensor and a corresponding extended interface, and a fifth detection chuck can be added on the basis of the four detection chucks to meet other wiring methods, such as a three-phase five-wire wiring method, to further meet the adaptation of different usage scenarios.

[0027] Optionally, the shell of the meter body 1 is made of insulating material, such as polyvinyl chloride (PVC) or epoxy resin. In this embodiment, polyvinyl chloride (PVC) is selected, which has good insulation properties, ensuring that current will not leak through the shell, ensuring the safety of operators, and at the same time, it is difficult to cause aging and embrittlement problems after long-term use. The meter body 1 itself is light in weight, which is convenient for operators to carry and operate.

[0028] Further, the first detection chuck 2 includes: a first insulating operating rod 21, a first mounting seat 22, a first connecting end 23, a first clamping ring 24, a second clamping ring 25 for cooperating with the first clamping ring 24 to clamp a wire, a first elastic clamping claw 26, a second elastic clamping claw 27 for cooperating with the first elastic clamping claw 26 to make the clamped wire be in the middle position between the first clamping ring 24 and the second clamping ring 25, a first locking buckle 241, a first locking block 251 for cooperating with the first locking buckle 241 to lock the relative position of the first clamping ring 24 and the second clamping ring 25, and a first mutual inductance 28 for sensing the current of the clamped wire; the first insulating operating rod 21 is fixedly connected to one end of the first mounting seat 22; the first connecting end 23 is fixedly connected to the first mounting seat 22; the first connecting end 23 is detachably connected to the meter body 1; when the first connecting end 23 is connected to the meter body 1, the first connecting end 23 is electrically connected to the first sensor; the first clamping The ring 24 and the second clamp ring 25 are rotatably connected to the other end of the first mounting seat 22 respectively; when the first clamp ring 24 and the second clamp ring 25 are in a closed state, a first detection cavity 29 for clamping and accommodating the wire to be tested is formed; the first mutual inductance 28 is fixedly connected to the first clamp ring 24 and the second clamp ring 25 respectively; the first mutual inductance 28 is electrically connected to the first connecting end 23; one end of the first elastic clamping claw 26 is slidably connected to the first clamp ring 24, and the other end is placed in the first detection cavity 29; one end of the second elastic clamping claw 27 is slidably connected to the second clamp ring 25, and the other end is placed in the first detection cavity 29; the first lock buckle 241 is fixedly connected to the first clamp ring 24; the first locking block 251 is fixedly connected to the second clamp ring 25; the first locking block 251 can be engaged with the first locking buckle 241; when the first locking block 251 and the first locking buckle 241 are engaged, the first clamp ring 24 and the second clamp ring 25 are in a closed and relatively static state.

[0029] In the first embodiment, the first operating lever is operated to achieve insulation isolation between the detection personnel and the phase line to be detected, thereby eliminating the potential safety hazard of electric shock to the detection personnel and improving the safety of the detection personnel; the first clamping ring 24 and the second clamping ring 25 are closed and cooperated to form an induction coil for detecting the wire, namely the first detection cavity 29, and the first mutual inductance 28 is arranged in the first detection cavity 29. The wire to be detected is placed in the first detection cavity 29, and the detection is achieved through the cooperation of the first mutual inductance 28 and the induction coil; the first elastic clamping claw 26 and the second elastic clamping claw 27 are cooperated The combination makes the wire always in the center position of the induction coil, so the detection effect is better and the error is smaller; the first connection end 23 is a wire for transmitting electrical signals, and the detected electrical signals are transmitted to the first sensor in the meter body 1 through the first connection end 23; during the detection process, in order to avoid the detection chuck from falling off due to environmental factors such as vibration, the first locking buckle 241 on the first clamp ring 24 and the first locking block 251 on the second clamp ring 25 are mutually engaged to realize the mutual fixation of the first clamp ring 24 and the second clamp ring 25, so as to prevent the detection chuck from falling off during the detection process.

[0030] Furthermore, the second detection chuck 3 includes: a second insulating operating rod, a second mounting seat, a second connecting end, a third clamping ring, a fourth clamping ring for cooperating with the third clamping ring to clamp a wire, a third elastic clamping claw, a fourth elastic clamping claw for cooperating with the third elastic clamping claw to make the clamped wire be in the middle position between the third clamping ring and the fourth clamping ring, a second locking buckle, a second locking block for cooperating with the second locking buckle to lock the relative position of the third clamping ring and the fourth clamping ring, and a second mutual inductance for sensing the current of the clamped wire; the second insulating operating rod is fixedly connected to one end of the second mounting seat; the second connecting end is fixedly connected to the second mounting seat; the second connecting end is detachably connected to the meter body 1; when the second connecting end is connected to the meter body 1, the second connecting end is electrically connected to the second sensor; The third clamp ring and the fourth clamp ring are rotatably connected to the other end of the first mounting seat 22 respectively; when the third clamp ring and the fourth clamp ring are in a closed state, a second detection cavity for clamping and placing the wire to be tested is formed; the second mutual inductor is fixedly connected to the third clamp ring and the fourth clamp ring respectively; the second mutual inductor is electrically connected to the second connecting end; one end of the third elastic clamping claw is slidably connected to the third clamp ring, and the other end is placed in the second detection cavity; one end of the fourth elastic clamping claw is slidably connected to the fourth clamp ring, and the other end is placed in the second detection cavity; the second lock buckle is fixedly connected to the third clamp ring; the second locking block is fixedly connected to the fourth clamp ring; the second locking block can be engaged with the second lock buckle; when the second locking block and the second lock buckle are in an engaged state, the third clamp ring and the fourth clamp ring are in a closed and relatively static state.

[0031] In the first embodiment, the second insulating operating rod is operated to achieve insulation isolation between the inspector and the phase line to be tested, thereby eliminating the potential safety hazard of electric shock to the inspector and improving the safety of the inspector; the third clamp ring and the fourth clamp ring are closed and cooperated to form an induction coil for detecting the wire, namely the second detection cavity, and the second mutual inductance is arranged in the second detection cavity, and the wire to be detected is placed in the second detection cavity, and the detection is achieved through the cooperation of the second mutual inductance and the induction coil; the third elastic clamping claw and the fourth elastic clamping claw cooperate to make the wire always in the center position of the induction coil, so that the detection effect is better and the error is smaller; the second connecting end is a wire for transmitting an electrical signal, and the detected electrical signal is transmitted to the second sensor in the meter body 1 through the second connecting end; during the detection process, in order to avoid the detection chuck from falling off due to environmental factors such as vibration, the second lock buckle on the third clamp ring and the second lock block on the fourth clamp ring are mutually engaged to achieve the mutual fixation of the third clamp ring and the fourth clamp ring to prevent the detection chuck from falling off during the detection process.

[0032] Further, the third detection chuck 4 includes: a third insulating operating rod, a third mounting seat, a third connecting end, a fifth clamping ring, a sixth clamping ring used to cooperate with the fifth clamping ring to clamp a wire, a fifth elastic clamping claw, a sixth elastic clamping claw used to cooperate with the fifth elastic clamping claw to make the clamped wire be in the middle position between the fifth clamping ring and the sixth clamping ring, a third locking buckle, a third locking block used to cooperate with the third locking buckle to lock the relative position of the fifth clamping ring and the sixth clamping ring, and a third mutual inductance for sensing the current of the clamped wire; the third insulating operating rod is fixedly connected to one end of the third mounting seat; the third connecting end is fixedly connected to the third mounting seat; the third connecting end is detachably connected to the meter body 1; when the third connecting end is connected to the meter body 1, the third connecting end is electrically connected to the third sensor; The fifth clamp ring and the sixth clamp ring are rotatably connected to the other end of the third mounting seat respectively; when the fifth clamp ring and the sixth clamp ring are in a closed state, a third detection cavity for clamping and placing the wire to be tested is formed; the third mutual inductance is fixedly connected to the fifth clamp ring and the sixth clamp ring respectively; the third mutual inductance is electrically connected to the third connecting end; one end of the fifth elastic clamping claw is slidably connected to the fifth clamp ring, and the other end is placed in the third detection cavity; one end of the sixth elastic clamping claw is slidably connected to the sixth clamp ring, and the other end is placed in the third detection cavity; the third lock buckle is fixedly connected to the fifth clamp ring; the third locking block is fixedly connected to the sixth clamp ring; the third locking block can be engaged with the third lock buckle; when the third locking block and the third lock buckle are in engaged state, the fifth clamp ring and the sixth clamp ring are in a closed and relatively static state.

[0033] In the first embodiment, the third insulating operating rod is operated to achieve insulation isolation between the inspector and the phase line to be tested, thereby eliminating the safety hazard of electric shock to the inspector and improving the safety of the inspector; the fifth clamp ring and the sixth clamp ring are closed and cooperated to form an induction coil for detecting the wire, namely the third detection cavity, and the third mutual inductance is arranged in the third detection cavity, and the wire to be detected is placed in the third detection cavity, and the detection is achieved by the cooperation of the third mutual inductance and the induction coil; the fifth elastic clamping claw and the sixth elastic clamping claw are cooperated to make the wire always in the center position of the induction coil, so that the detection effect is better and the error is smaller; the third connecting end is a wire for transmitting an electrical signal, and the detected electrical signal is transmitted to the third sensor in the meter body 1 through the third connecting end; during the detection process, in order to avoid the detection chuck from falling off due to environmental factors such as vibration, the third lock buckle on the fifth clamp ring and the third lock block on the sixth clamp ring are mutually engaged to achieve the mutual fixation of the fifth clamp ring and the sixth clamp ring, so as to prevent the detection chuck from falling off during the detection process.

[0034] Furthermore, the fourth detection chuck 5 includes: a fourth insulating operating rod, a fourth mounting seat, a fourth connecting end, a seventh clamping ring, an eighth clamping ring for cooperating with the seventh clamping ring to clamp a wire, a seventh elastic clamping claw, an eighth elastic clamping claw for cooperating with the seventh elastic clamping claw to make the clamped wire be in the middle position between the seventh clamping ring and the eighth clamping ring, a third locking buckle, a fourth locking block for cooperating with the fourth locking buckle to lock the relative position of the seventh clamping ring and the eighth clamping ring, and a fourth mutual inductance for sensing the current of the clamped wire; the fourth insulating operating rod is fixedly connected to one end of the fourth mounting seat; the fourth connecting end is fixedly connected to the fourth mounting seat; the fourth connecting end is detachably connected to the meter body 1; when the fourth connecting end is connected to the meter body 1, the fourth connecting end is electrically connected to the fourth sensor The seventh clamp ring and the eighth clamp ring are rotatably connected to the fourth mounting seat respectively; when the seventh clamp ring and the eighth clamp ring are in a closed state, a fourth detection cavity for clamping and placing the wire to be tested is formed; the fourth mutual inductor is fixedly connected to the seventh clamp ring and the eighth clamp ring respectively; the fourth mutual inductor is electrically connected to the fourth connecting end; one end of the seventh elastic clamping claw is slidably connected to the seventh clamp ring, and the other end is placed in the fourth detection cavity; one end of the eighth elastic clamping claw is slidably connected to the eighth clamp ring, and the other end is placed in the fourth detection cavity; the fourth lock buckle is fixedly connected to the seventh clamp ring; the fourth locking block is fixedly connected to the eighth clamp ring; the fourth locking block can be engaged with the fourth lock buckle; when the fourth locking block and the fourth lock buckle are in engaged state, the seventh clamp ring and the eighth clamp ring are in a closed and relatively static state.

[0035] In the first embodiment, the fourth insulating operating rod is operated to achieve insulation isolation between the detection personnel and the phase line to be detected, thereby eliminating the safety hazard of electric shock to the detection personnel and improving the safety of the detection personnel; the seventh clamp ring and the eighth clamp ring are closed and cooperated to form an induction coil for detecting the wire, namely the fourth detection cavity, and the fourth mutual inductance is arranged in the fourth detection cavity, and the wire to be detected is placed in the fourth detection cavity, and the detection is achieved by the cooperation of the fourth mutual inductance and the induction coil; the seventh elastic clamping claw and the eighth elastic clamping claw are cooperated to make the wire always in the center position of the induction coil, so that the detection effect is better and the error is smaller; the fourth connecting end is a wire for transmitting an electrical signal, and the detected electrical signal is transmitted to the fourth sensor in the meter body 1 through the fourth connecting end; during the detection process, in order to avoid the detection clamp falling off due to environmental factors such as vibration, the fourth lock buckle on the seventh clamp ring and the fourth lock block on the eighth clamp ring are mutually engaged to achieve the mutual fixation of the seventh clamp ring and the eighth clamp ring to prevent the detection clamp from falling off during the detection process.

[0036] Furthermore, the meter body 1 is also provided with: a liquid crystal display screen 9 for displaying detection data; the liquid crystal display screen 9 is fixedly connected to the meter body 1; and the liquid crystal display screen 9 is electrically connected to the microcontroller.

[0037] Specifically, the results of the processing and analysis by the microcontroller are visually displayed on the liquid crystal display screen 9 on the meter body 1, so that the operator can more intuitively judge whether there is a leakage phenomenon through the data.

[0038] Furthermore, the watch body 1 is also provided with: a power supply module and a solar charging panel 6; the solar charging panel 6 is detachably connected to the watch body 1; the power supply module is detachably connected to the watch body 1; the power supply module is electrically connected to the high-precision analog-to-digital converter and the microcontroller respectively; the solar panel is electrically connected to the power supply module.

[0039] Specifically, the high-precision analog-to-digital converter and the microcontroller are powered by a power supply module. The power supply module uses a detachable battery design and is provided with a charging interface. It can also be charged using a solar panel. Multiple charging methods enable the detection device to be applicable in various environments, further increasing the scene adaptability of the detection device.

[0040] Furthermore, the meter body 1 is also provided with: an adjusting member 7 for adjusting the resistance of the sampling resistor; the adjusting member 7 is rotatably connected to the meter body 1; the adjusting member 7 is electrically connected to the sampling resistor; the resistance of the sampling resistor is 0.001Ω~0.01Ω.

[0041] Specifically, the adjusting member 7 is designed as a rotary knob, and the operator can adjust the value of the sampling resistor by rotating the knob. During the rotation process, the adjusting member 7 changes the connection state with the sampling resistor through the potentiometer, thereby realizing the change of the resistance value; the resistance range of the sampling resistor is set to 0.001Ω~0.01Ω. The selection of this range is based on the actual needs of leakage detection, that is, too low a resistance value can minimize the loss of the current signal, thereby improving the detection accuracy of the signal.

[0042] In other embodiments, the adjustment member 7 may be connected to a microcontroller to control the setting of the sampling resistor through software, so as to more intelligently adapt to the leakage detection requirements in different scenarios.

[0043] Furthermore, an alarm module 8 is provided; the alarm module 8 is detachably connected to the title; the alarm module 8 is electrically connected to the microcontroller; when it is detected that the leakage current exceeds the set threshold, the alarm module 8 emits an audible and visual alarm to prompt the operator.

[0044] Specifically, the alarm module 8 is detachably connected to the meter body 1. This design allows the user to easily disassemble and replace the alarm module 8 when necessary, which is convenient for maintenance and repair; the alarm module 8 is usually equipped with an LED indicator and a buzzer; the LED light may use different colors or flashing modes in different states to indicate the operating status of the device; the alarm module 8 can provide instant sound and light signal feedback when the leakage current exceeds the set threshold, effectively reminding the operator to take timely countermeasures and reduce the probability of accidents.

[0045] In other embodiments, alarm selection functions may be added, such as different types of warning sounds, indicator light modes, etc., to further enhance the flexibility and personalization of the device and meet a variety of application scenarios.

[0046] A detection method including the above split leakage detection device, the steps of which are as follows: S1, connecting the first detection chuck 2, the second detection chuck 3, the third detection chuck 4 and the fourth detection chuck 5 to the meter body 1, and adjusting the sampling resistance through the adjustment member 7 on the meter body 1; S2, sequentially hang the first detection chuck 2, the second detection chuck 3, the third detection chuck 4 and the fourth detection chuck 5 on the conductor of the circuit to be detected; S3, the first detection chuck 2, the second detection chuck 3, the third detection chuck 4 and the fourth detection chuck 5 transmit the current signal to the sampling resistor, and the high-precision analog-to-digital converter sequentially receives the current signal of the first detection chuck 2, the current signal of the second detection chuck 3, the current signal of the third detection chuck 4 and the current signal of the fourth detection chuck 5 passing through the sampling resistor; S4, the high-precision analog-to-digital converter converts the current signal of the first detection chuck 2, the current signal of the second detection chuck 3, the current signal of the third detection chuck 4 and the current signal of the fourth detection chuck 5 into digital signals in sequence and transmits them to the microcontroller; S5, the microcontroller receives the digital signal and processes it to obtain the current data of each line on the detection circuit, and compares it with the set threshold value; if it is higher than the set threshold value, it is determined to be a leakage, the data is displayed on the LCD screen 9, and the alarm module 8 is controlled to emit an audible and visual alarm to prompt the operator; if it is lower than the set threshold value, it is determined to be a normal operation, and the data is displayed on the LCD screen 9.

[0047] In the specific implementation process, the first detection chuck 2, the second detection chuck 3, the third detection chuck 4 and the fourth detection chuck 5 are connected to the meter body 1, so that the first detection chuck 2 is connected to the first sensor, the second detection chuck 3 is connected to the second sensor, the third detection chuck 4 is connected to the third sensor, and the fourth detection chuck 5 is connected to the fourth sensor, and at the same time, the sampling resistor is adjusted to a suitable value through the adjustment member 7 on the meter body 1; The first detection chuck 2, the second detection chuck 3, the third detection chuck 4 and the fourth detection chuck 5 are respectively connected to the wires of the detection circuit. Taking the first detection chuck 2 as an example: The operator uses the insulating operating rod to bring the first detection clamp 2 close to the wire of the detection circuit, closes the first clamp ring 24 and the second clamp ring 25 to form an induction coil, so that the wire of the detection circuit is placed in the detection cavity, and at the same time, the first lock buckle 241 and the first lock block 251 are clamped to prevent the first clamp ring 24 and the second clamp ring 25 from separating and falling off during the detection process, resulting in inaccurate detection data. The current of the wire is detected by the cooperation of the first mutual inductance 28 and the induction coil, and the obtained electrical signal is transmitted to the sampling resistor of the meter body 1 through the first connecting terminal 23. The high-precision analog-to-digital converter receives the electrical signal after passing through the sampling resistor and quickly converts it into a digital signal. The microcontroller obtains data through analysis and compares it with the set threshold. If it is higher than the set threshold, it is determined to be leakage, and the data is displayed on the liquid crystal display screen 9, and the alarm module 8 is controlled to emit an audible and visual alarm to prompt the operator; if it is lower than the set threshold, it is determined to be normal operation, and the data is displayed on the liquid crystal display screen 9; the operation steps of the second detection clamp 3, the third detection clamp 4 and the fourth detection clamp 5 are all consistent with the above operation steps.

[0048] A split-type leakage detection device and detection method of the present invention adopts a multi-detection chuck design, each detection chuck is an independent structure, and has its own clamping mechanism and current sensing element, so that the operator can flexibly select a suitable chuck according to the actual arrangement of the wires, without being limited to the arrangement spacing and arrangement method between the wires, which greatly improves the convenience of operation; each detection chuck is detachably connected to the meter body 1, which is convenient for maintenance and replacement, and the operator does not need to adjust the entire device, which reduces the skill requirements for the operator.

[0049] The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A split leakage detection device, characterized in that: include: A meter body, a first detection chuck, a second detection chuck, a third detection chuck and a fourth detection chuck; The first detection chuck, the second detection chuck, the third detection chuck and the fourth detection chuck are respectively detachably connected to the meter body; The meter body is provided with: a first sensor corresponding to the first detection chuck, a second sensor corresponding to the second detection chuck, a third sensor corresponding to the third detection chuck, a fourth sensor corresponding to the fourth detection chuck, a sampling resistor, a high-precision analog-to-digital converter for converting electrical signals into digital signals, and a microcontroller for processing and transmitting the digital signals of the high-precision analog-to-digital converter; When the first detection chuck is connected to the meter body, the first detection chuck is electrically connected to the detection end of the first sensor; When the second detection chuck is connected to the meter body, the second detection chuck is electrically connected to the detection end of the second sensor; When the third detection chuck is connected to the meter body, the third detection chuck is electrically connected to the detection end of the third sensor; When the fourth detection chuck is connected to the meter body, the third detection chuck is electrically connected to the detection end of the fourth sensor; The output end of the first sensor, the output end of the second sensor, the output end of the third sensor and the output end of the fourth sensor are electrically connected to the sampling resistor respectively; the sampling resistor is electrically connected to the high-precision analog-to-digital converter; and the high-precision analog-to-digital converter is electrically connected to the microcontroller.

2. A split type leakage detection device according to claim 1, characterized in that: The first detection clamp comprises: a first insulating operating rod, a first mounting seat, a first connecting end, a first clamping ring, a second clamping ring used to cooperate with the first clamping ring to clamp a wire, a first elastic clamping claw, a second elastic clamping claw used to cooperate with the first elastic clamping claw to make the clamped wire be located in the middle position between the first clamping ring and the second clamping ring, a first locking buckle, a first locking block used to cooperate with the first locking buckle to lock the relative position of the first clamping ring and the second clamping ring, and a first mutual inductor used to sense the current of the clamped wire; The first insulating operating rod is fixedly connected to one end of the first mounting seat; The first connection end is fixedly connected to the first mounting seat; the first connection end is detachably connected to the meter body; when the first connection end is connected to the meter body, the first connection end is electrically connected to the first sensor; The first clamp ring and the second clamp ring are rotatably connected to the other end of the first mounting seat respectively; when the first clamp ring and the second clamp ring are in a closed state, a first detection cavity for clamping and accommodating the wire to be tested is formed; The first mutual inductor is fixedly connected to the first clamp ring and the second clamp ring respectively; the first mutual inductor is electrically connected to the first connection end; One end of the first elastic clamping claw is slidably connected to the first clamping ring, and the other end is placed in the first detection cavity; one end of the second elastic clamping claw is slidably connected to the second clamping ring, and the other end is placed in the first detection cavity; The first locking buckle is fixedly connected to the first clamping ring; the first locking block is fixedly connected to the second clamping ring; the first locking block can be engaged with the first locking buckle; when the first locking block and the first locking buckle are engaged, the first clamping ring and the second clamping ring are in a closed and relatively static state.

3. A split type leakage detection device according to claim 1, characterized in that: The second detection clamp comprises: a second insulating operating rod, a second mounting seat, a second connecting end, a third clamping ring, a fourth clamping ring used to cooperate with the third clamping ring to clamp a wire, a third elastic clamping claw, a fourth elastic clamping claw used to cooperate with the third elastic clamping claw to make the clamped wire be located in the middle position between the third clamping ring and the fourth clamping ring, a second locking buckle, a second locking block used to cooperate with the second locking buckle to lock the relative position of the third clamping ring and the fourth clamping ring, and a second mutual inductor used to sense the current of the clamped wire; The second insulating operating rod is fixedly connected to one end of the second mounting seat; The second connection end is fixedly connected to the second mounting seat; the second connection end is detachably connected to the meter body; when the second connection end is connected to the meter body, the second connection end is electrically connected to the second sensor; The third clamp ring and the fourth clamp ring are rotatably connected to the other end of the first mounting seat respectively; when the third clamp ring and the fourth clamp ring are in a closed state, a second detection cavity for clamping and accommodating the wire to be tested is formed; The second mutual inductor is fixedly connected to the third clamp ring and the fourth clamp ring respectively; the second mutual inductor is electrically connected to the second connection end; One end of the third elastic clamping claw is slidably connected to the third clamping ring, and the other end is placed in the second detection cavity; one end of the fourth elastic clamping claw is slidably connected to the fourth clamping ring, and the other end is placed in the second detection cavity; The second locking buckle is fixedly connected to the third clamp ring; the second locking block is fixedly connected to the fourth clamp ring; the second locking block can be engaged with the second locking buckle; when the second locking block and the second locking buckle are engaged, the third clamp ring and the fourth clamp ring are in a closed and relatively static state.

4. A split type leakage detection device according to claim 1, characterized in that: The third detection clamp comprises: a third insulating operating rod, a third mounting seat, a third connecting end, a fifth clamping ring, a sixth clamping ring used to cooperate with the fifth clamping ring to clamp a wire, a fifth elastic clamping claw, a sixth elastic clamping claw used to cooperate with the fifth elastic clamping claw to make the clamped wire be in the middle position between the fifth clamping ring and the sixth clamping ring, a third locking buckle, a third locking block used to cooperate with the third locking buckle to lock the relative position of the fifth clamping ring and the sixth clamping ring, and a third mutual inductor used to sense the current of the clamped wire; The third insulating operating rod is fixedly connected to one end of the third mounting seat; The third connection end is fixedly connected to the third mounting seat; the third connection end is detachably connected to the meter body; when the third connection end is connected to the meter body, the third connection end is electrically connected to the third sensor; The fifth clamp ring and the sixth clamp ring are rotatably connected to the other end of the third mounting seat respectively; when the fifth clamp ring and the sixth clamp ring are in a closed state, a third detection cavity is formed for clamping and accommodating the wire to be tested; The third mutual inductor is fixedly connected to the fifth clamp ring and the sixth clamp ring respectively; the third mutual inductor is electrically connected to the third connection end; One end of the fifth elastic clamping claw is slidably connected to the fifth clamping ring, and the other end is placed in the third detection cavity; one end of the sixth elastic clamping claw is slidably connected to the sixth clamping ring, and the other end is placed in the third detection cavity; The third locking buckle is fixedly connected to the fifth clamp ring; the third locking block is fixedly connected to the sixth clamp ring; the third locking block can be engaged with the third locking buckle; when the third locking block and the third locking buckle are engaged, the fifth clamp ring and the sixth clamp ring are in a closed and relatively static state.

5. A split type leakage detection device according to claim 1, characterized in that: The fourth detection chuck comprises: a fourth insulating operating rod, a fourth mounting seat, a fourth connecting end, a seventh clamping ring, an eighth clamping ring used to cooperate with the seventh clamping ring to clamp a wire, a seventh elastic clamping claw, an eighth elastic clamping claw used to cooperate with the seventh elastic clamping claw to make the clamped wire be in the middle position between the seventh clamping ring and the eighth clamping ring, a third locking buckle, a fourth locking block used to cooperate with the fourth locking buckle to lock the relative position of the seventh clamping ring and the eighth clamping ring, and a fourth mutual inductor used to sense the current of the clamped wire; The fourth insulating operating rod is fixedly connected to one end of the fourth mounting seat; The fourth connection end is fixedly connected to the fourth mounting seat; the fourth connection end is detachably connected to the meter body; when the fourth connection end is connected to the meter body, the fourth connection end is electrically connected to the fourth sensor; The seventh clamp ring and the eighth clamp ring are rotatably connected to the fourth mounting seat respectively; when the seventh clamp ring and the eighth clamp ring are in a closed state, a fourth detection cavity for clamping and accommodating the wire to be tested is formed; The fourth mutual inductor is fixedly connected to the seventh clamp ring and the eighth clamp ring respectively; the fourth mutual inductor is electrically connected to the fourth connection end; One end of the seventh elastic clamping claw is slidably connected to the seventh clamping ring, and the other end is placed in the fourth detection cavity; one end of the eighth elastic clamping claw is slidably connected to the eighth clamping ring, and the other end is placed in the fourth detection cavity; The fourth locking buckle is fixedly connected to the seventh clamp ring; the fourth locking block is fixedly connected to the eighth clamp ring; the fourth locking block can be engaged with the fourth locking buckle; when the fourth locking block and the fourth locking buckle are engaged, the seventh clamp ring and the eighth clamp ring are in a closed and relatively static state.

6. A split type leakage detection device according to claim 1, characterized in that: The meter body is also provided with: a liquid crystal display screen for displaying detection data; The liquid crystal display screen is fixedly connected to the meter body; the liquid crystal display screen is electrically connected to the microcontroller.

7. A split type leakage detection device according to claim 1, characterized in that: The meter body is also provided with: a power supply module and a solar charging panel; The solar charging panel is detachably connected to the meter body; the power supply module is detachably connected to the meter body; The power supply module is electrically connected to the high-precision analog-to-digital converter and the microcontroller respectively; and the solar panel is electrically connected to the power supply module.

8. A split type leakage detection device according to claim 1, characterized in that: The meter body is also provided with: an adjusting member for adjusting the resistance of the sampling resistor; The adjusting member is rotatably connected to the meter body; the adjusting member is electrically connected to the sampling resistor; The resistance of the sampling resistor is 0.001Ω~0.01Ω.

9. A split type leakage detection device according to claim 1, characterized in that: Also provided are: an alarm module; The alarm module is detachably connected to the title; The alarm module is electrically connected to the microcontroller; when it is detected that the leakage current exceeds a set threshold, the alarm module sends out an audible and visual alarm to prompt an operator.

10. A detection method based on the split type leakage detection device according to any one of claims 1 to 9, characterized in that: The steps include: S1, connecting the first detection chuck, the second detection chuck, the third detection chuck and the fourth detection chuck to the meter body, and adjusting the sampling resistance through the adjustment member on the meter body; S2, sequentially hooking the first detection chuck, the second detection chuck, the third detection chuck and the fourth detection chuck onto the conductor of the circuit to be detected; S3, the first detection chuck, the second detection chuck, the third detection chuck and the fourth detection chuck transmit the current signal to the sampling resistor, and the high-precision analog-to-digital converter sequentially receives the current signal of the first detection chuck, the current signal of the second detection chuck, the current signal of the third detection chuck and the current signal of the fourth detection chuck passing through the sampling resistor; S4, the high-precision analog-to-digital converter converts the current signal of the first detection chuck, the current signal of the second detection chuck, the current signal of the third detection chuck and the current signal of the fourth detection chuck into digital signals in sequence and transmits them to the microcontroller; S5. The microcontroller receives the digital signal and processes it to obtain the current data of each line on the detection circuit, and compares it with the set threshold value; if it is higher than the set threshold value, it is determined to be a leakage, the data is displayed on the LCD screen, and the alarm module is controlled to emit an audible and visual alarm to prompt the operator; if it is lower than the set threshold value, it is determined to be a normal operation, and the data is displayed on the LCD screen.

Images