Photovoltaic string telescoping current measurement device

Abstract

The utility model discloses a photovoltaic group string telescopic current measuring equipment, including the cooperation connection of clamp ammeter and digital display meter, and the clamp ammeter is installed on telescopic insulating pole. When measuring work, personnel need not frequently move ladder and climb up and down, and only need telescopic pole to reach the cable of different height and different position. Can fast, continuously to the measurement of multiple string component, especially in the area of component layout dense, and efficiency promotes several times. And need not to climb ladder or support, fundamentally eliminated the risk of falling from height, and the security is high.

Description

Technical Field

[0001] This application relates to the field of current measurement equipment, and more particularly to a photovoltaic string extension current measurement device. Background Technology

[0002] In recent years, with the rapid development of new energy, mountain photovoltaics has also gradually grown and expanded. By installing photovoltaic power generation systems on mountainous or hilly terrain, it utilizes idle land resources in the mountains to generate solar energy, and is an important part of green energy construction in recent years.

[0003] In practical applications, clamp meters are typically used to measure the current in the cables of photovoltaic strings. The clamp head of the clamp meter is a magnetic iron core with an air gap in it, where a Hall element is placed. When the clamp head clamps the current-carrying conductor, the magnetic field generated by the conductor is focused by the iron core and passes through the Hall element in the air gap. The greater the current in the conductor, the stronger the magnetic field, and the higher the voltage generated by the Hall element. The internal circuitry of the instrument accurately measures this Hall voltage, linearly converts it into the corresponding current value, and finally displays it on the screen via a digital display.

[0004] However, when measuring cable current, traditional clamp meters require maintenance personnel to have close contact with the positive and negative cables of each component. In mountainous environments, the climbing and moving involved makes this work very slow. Furthermore, the frequent use of ladders (especially A-frame ladders) on uneven terrain greatly increases the risk of ladder slippage and personnel falls, posing a significant safety hazard in maintenance work. This also increases troubleshooting time and power loss during maintenance, affecting the normal operation of the entire power generation equipment. Therefore, further improvements are warranted. Utility Model Content

[0005] In order to overcome the shortcomings of the prior art, this utility model provides a photovoltaic string expansion current measuring device to solve the problems in the prior art.

[0006] The photovoltaic string expansion current measuring device provided in this application adopts the following technical solution: A photovoltaic string telescopic current measuring device includes a clamp meter and a digital display meter, wherein the clamp meter is mounted on a telescopic insulating rod.

[0007] By adopting the above technical solution, personnel do not need to frequently move ladders or climb up and down during measurement work; they can simply use an extendable pole to reach cables at different heights and locations. Multiple strings of components can be measured quickly and continuously, especially in areas with dense component layouts, increasing efficiency several times over. Furthermore, the elimination of ladders or supports fundamentally eliminates the risk of falls from heights, ensuring high safety.

[0008] Optionally, the clamp meter has a first connector formed at its bottom, and the retractable insulating rod has a second connector formed at its head. The clamp meter and the retractable insulating rod are connected through the first connector and the second connector, and the first connector and the second connector are detachably connected.

[0009] By adopting the above technical solution, this detachable installation method allows the clamp meter to be installed on the telescopic insulating rod for use; when not in use, the clamp meter can be detached for easy carrying.

[0010] Optionally, the first connector and the second connector are connected by a thread.

[0011] Optionally, the first connector and the second connector are connected by a snap-fit ​​connection.

[0012] Optionally, the first connector is square-shaped, and the second connector has a square groove formed inside. The first connector can be slidably plugged into the square groove inside the second connector. A pair of latches are symmetrically arranged on the left and right sides of the first connector. Hidden openings are formed on both sides of the first connector. The two latches are respectively installed in the hidden openings on both sides, and the two latches can be pressed inward to retract or automatically popped out after being released. The square groove of the second connector has symmetrically formed slots on the left and right sides that engage and lock with the latches in the first connector. When retracted, the latches can be unlocked in the slots. When popped out, the latches can be inserted and locked in the slots.

[0013] Optionally, the latch includes a latch portion, a button portion, and a connecting portion connecting the latch portion and the button portion; the latch portion is used to engage and lock with the bayonet; a horizontal groove is formed in the first connector, the latch is slidably installed in the horizontal groove through the button portion, and a spring is also installed in the horizontal groove to push the latch outward.

[0014] Optionally, the head of the retractable insulating rod is also equipped with a cap for sealing the second connector, and the cap is suspended from the head of the retractable insulating rod by a rope.

[0015] By adopting the above technical solution, since workers need to climb mountains for extended periods during mountain operations, the retractable insulating rod can be used independently after the clamp meter is removed. For example, it can be used as a hiking stick to assist workers in climbing, thus realizing the versatility of the retractable insulating rod. At this time, a cap can be used to seal the second connector for protection, preventing it from easily deforming or being damaged.

[0016] In summary, this application includes at least one of the following beneficial technical effects: 1. Maintenance personnel can operate from a flat and safe ground throughout the entire process without climbing ladders or scaffolds, fundamentally eliminating the risk of falls from heights. This aligns with the safety production principle of "if it can be on the ground, don't climb high; if it can be online, don't cut off the power," ensuring inherent safety and eliminating the risk of climbing heights. 2. Personnel do not need to frequently move ladders or climb up and down; they can reach cables at different heights and locations simply by using an extension pole. Multiple strings of components can be measured quickly and continuously, especially in areas with dense component layouts, increasing efficiency several times over and significantly improving measurement efficiency. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of a photovoltaic string expansion current measuring device of this application.

[0018] Figure 2 This is an enlarged structural schematic diagram of the connection between the clamp meter and the retractable insulating rod in Embodiment 1 of this application.

[0019] Figure 3 This is an enlarged structural schematic diagram of the connection between the clamp meter and the retractable insulating rod in Embodiment 2 of this application.

[0020] Figure 4 yes Figure 3 Enlarged view of section A in the middle.

[0021] Explanation of reference numerals in the attached figures: 1. Clamp meter; 2. Digital display meter; 3. Telescopic insulating rod; 4. First connector; 41. Concealed opening; 42. Horizontal groove; 5. Second connector; 45. Square groove; 52. Bayonet; 6. Tongue; 61. Tongue part; 62. Button part; 63. Connecting part; 7. Spring; 8. Cap; 9. Rope. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] This utility model provides a photovoltaic string expansion current measuring device.

[0024] Example 1: Reference Figure 1 A photovoltaic string telescopic current measuring device includes a clamp meter 1 and a digital display meter 2 used in conjunction, with the clamp meter 1 mounted on a telescopic insulating rod 3.

[0025] In traditional work methods, firstly, due to complex terrain and steep slopes, personnel movement and equipment transport are difficult, making traditional measurement methods time-consuming and labor-intensive. Secondly, to adapt to slopes, avoid obstructions, or maximize area utilization, the supports are usually high, requiring climbing for measurements. Thirdly, frequent use of ladders (especially A-frame ladders) on rugged mountainous terrain greatly increases the risk of ladder slippage and personnel falls, posing a significant safety hazard in maintenance work. Fourthly, traditional clamp meters require maintenance personnel to have close contact with the positive and negative cables of each component for measurement; in mountainous environments, climbing and moving make this work very slow and inefficient.

[0026] In this application, the clamp meter 1 is mounted on a retractable insulating rod 3. Firstly, maintenance personnel can operate from a flat, safe surface without climbing ladders or supports, fundamentally eliminating the risk of falls from heights. This aligns with the safety principle of "if it can be on the ground, don't climb high; if it can be online, don't cut off power," ensuring inherent safety and eliminating the risk of height-related risks. Secondly, personnel do not need to frequently move ladders or climb up and down; they can simply extend the rod to reach cables at different heights and locations. This allows for rapid and continuous measurement of multiple cable strings, especially in areas with densely packed cable layouts, increasing efficiency several times over and significantly improving measurement efficiency.

[0027] Reference Figure 2 In this embodiment, the bottom of the clamp meter 1 is formed with a first connector 4, and the head of the retractable insulating rod 3 is formed with a second connector 5. The clamp meter 1 and the retractable insulating rod 3 are connected through the first connector 4 and the second connector 5, and the first connector 4 and the second connector 5 are detachably connected.

[0028] Specifically, the first connector 4 and the second connector 5 are threaded together, with the first connector 4 having an external thread and the second connector 5 having an internal thread adapted for the connection. This allows for a threaded connection after mating, forming a detachable connection. With this detachable installation method, the clamp meter 1 is mounted on the retractable insulating rod 3 for use; when not in use, the clamp meter 1 can be detached for easy carrying.

[0029] Example 2: Reference Figure 3 and Figure 4 The difference between this embodiment and embodiment 1 is that the connection method between the first connector 4 and the second connector 5 is different.

[0030] In this embodiment, the first connector 4 and the second connector 5 are connected by a snap-fit ​​mechanism.

[0031] Reference Figure 3 and Figure 4 Specifically, the first connector 4 is square-shaped, and the second connector 5 has a square groove 45 formed inside. The first connector 4 can be slidably plugged into the square groove 45 inside the second connector 5. A pair of latches 6 are symmetrically arranged on the left and right sides of the first connector 4. Hidden openings 41 are formed on both sides of the first connector 4. The two latches 6 are respectively installed in the hidden openings 41 on both sides, and the two latches 6 can be pressed inward to retract or automatically popped outward after being released. The square groove 45 of the second connector 5 has symmetrically formed locking slots 52 on the left and right sides that engage and lock with the latches 6 in the first connector 4. When retracted, the latches 6 can be unlocked in the locking slots 52, and when popped out, the latches 6 can be inserted and locked in the locking slots 52.

[0032] Specifically, the latch 6 includes a latch portion 61, a button portion 62, and a connecting portion 63 connecting the latch portion 61 and the button portion 62; the latch portion 61 is used to engage and lock with the bayonet 52; a horizontal groove 42 is formed in the first connector 4, and the latch 6 is slidably installed in the horizontal groove 42 through the button portion 62. A spring 7 is also installed in the horizontal groove 42 to push the latch 6 outward.

[0033] When the clamp meter 1 is installed on the retractable insulating rod 3, the first connector 4 of the clamp meter 1 is inserted into the square slot 45 in the second connector 5. At this time, the two latches 6 are pressed inward and retracted until the first connector 4 is in place. Then, under the action of the spring 7, the latches 6 are ejected outward, and the latch portion 61 of the latches 6 engages with the latch slot 52, forming a locked connection. When removing the clamp meter 1, press the button portion 62 in the latches 6 inward to retract the latches 6 in whole, causing the latch portion 61 of the latches 6 to disengage from the latch slot 52, and the clamp meter 1 can be easily pulled out.

[0034] In this embodiment, a cap 8 is also installed at the head of the telescopic insulating rod 3 to cover the second connector 5, and the cap 8 is suspended at the head of the telescopic insulating rod 3 by a rope 9.

[0035] Because workers need to climb mountains for extended periods during mountain operations, the retractable insulating rod 3 can be used independently after the clamp meter 1 is removed. For example, it can be used as a hiking stick to assist workers in climbing, thus achieving the versatility of the retractable insulating rod 3. At this time, a cap 8 can be used to seal the second connector 5 for protection, preventing it from easily deforming or being damaged.

[0036] The foregoing description of specific exemplary embodiments of the present invention is for illustrative and explanatory purposes. These descriptions are not intended to limit the present invention to the precise forms disclosed, and it is obvious that many changes and variations can be made based on the above teachings. Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the present invention and are not intended to limit the invention. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. The purpose of selecting and describing exemplary embodiments is to explain the specific principles of the present invention and its practical application, so that those skilled in the art, after reading this specification, can make modifications, substitutions, variations, and various choices and changes to the embodiments as needed without departing from the principles and spirit of the present invention, provided that such modifications, substitutions, variations, and choices and changes are within the scope of the claims of the present invention and are protected by patent law.

Claims

1. A photovoltaic string expansion current measuring device, characterized in that: Includes a clamp meter (1) and a digital display meter (2), wherein the clamp meter (1) is mounted on a retractable insulating rod (3); The clamp meter (1) has a first connector (4) formed at its bottom, and the retractable insulating rod (3) has a second connector (5) formed at its head. The clamp meter (1) and the retractable insulating rod (3) are connected by the first connector (4) and the second connector (5), and the first connector (4) and the second connector (5) are detachably connected.

2. The photovoltaic string expansion current measuring device according to claim 1, characterized in that: The first connector (4) and the second connector (5) are connected by a thread.

3. The photovoltaic string expansion current measuring device according to claim 1, characterized in that: The first connector (4) and the second connector (5) are connected by a snap-fit ​​mechanism.

4. The photovoltaic string expansion current measuring device according to claim 3, characterized in that: The first connector (4) is square-shaped, and the second connector (5) has a square groove (45) formed inside. The first connector (4) can be slidably plugged into the square groove (45) inside the second connector (5). A pair of latches (6) are symmetrically arranged on the left and right sides of the first connector (4). Hidden openings (41) are formed on both the left and right sides of the first connector (4). The two latches (6) are respectively installed in the hidden openings (41) on both sides. The two latches (6) can be pressed inward to retract or automatically popped out after being released. The square groove (45) of the second connector (5) has symmetrically formed slots (52) on the left and right sides that engage and lock with the latches (6) in the first connector (4). When retracting, the latches (6) can be unlocked in the slots (52). When popping out, the latches (6) can be inserted and locked in the slots (52).

5. A photovoltaic string expansion current measuring device according to claim 4, characterized in that: The latch (6) includes a latch portion (61), a button portion (62), and a connecting portion (63) connecting the latch portion (61) and the button portion (62); the latch portion (61) is used to engage and lock with the bayonet (52); a horizontal groove (42) is formed in the first connector (4), and the latch (6) is slidably installed in the horizontal groove (42) through the button portion (62). A spring (7) is also installed in the horizontal groove (42) for pushing the latch (6) outward.

6. The photovoltaic string expansion current measuring device according to claim 4, characterized in that: The head of the telescopic insulating rod (3) is also equipped with a cap (8) for sealing the second connector (5), and the cap (8) is suspended from the head of the telescopic insulating rod (3) by a rope (9).

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