Power sensor for power monitoring

Abstract

The invention relates to the technical field of power monitoring equipment, and discloses a power sensor for power monitoring, which comprises a base, the top of the base is fixedly connected with a lower mutual inductor, and the top of the lower mutual inductor is provided with an upper mutual inductor; through the arrangement of the positioning assembly, the position of the power transmission line can be synchronously adjusted in the limiting process of the mutual inductor body under the mutual cooperation of the positioning assembly and the auxiliary assembly, and the power transmission line can be clamped by adjusting two symmetrically arranged mounting blocks and a telescopic bag; it is guaranteed that the power transmission line is located in the center of the inner hole of the mutual inductor body, and the monitoring effect on the power transmission line is effectively improved; the problem that according to an existing power sensor for power monitoring, due to the fact that a power transmission line is affected by gravity, the power transmission line droops to make contact with the bottom of a center hole of a current transformer, and the monitoring accuracy of the current transformer on the power transmission line is affected is solved.

Description

Technical Field

[0001] The present invention belongs to the technical field of power monitoring equipment, and in particular relates to a power sensor for power monitoring. Background Art

[0002] Current transformers (CT) are mainly used in single-phase circuits, usually used to convert high current into low current signals that can be safely measured. They are usually used as part of a metering or protection device to measure current and monitor overload conditions in circuits. Three-phase current transformers (Three-Phase CT) are mainly used in three-phase circuits. Since a three-phase system contains three current phases, a three-phase current transformer can measure and monitor three current phases at the same time, and is used for metering, protection, and control applications in three-phase power systems.

[0003] After searching, a Chinese patent discloses a current transformer (Announcement No. CN214624638U). This patented technology can improve the sealing of the current transformer, achieve good waterproof and dustproof effects, and reduce the overall volume of the current transformer. However, the current transformer needs to place the line at the center of the transformer during the process of monitoring the current of the transmission line. After the current transformer is installed in the existing method, the transmission line itself is affected by gravity, which will cause the transmission line to sag and contact the bottom of the center hole of the current transformer, which will affect the accuracy of the current transformer in monitoring the transmission line. Therefore, a person skilled in the art provides a power sensor for power monitoring to solve the problems raised in the above background technology) Summary of the invention

[0004] 1. Technical issues to be resolved

[0005] In view of the shortcomings of the prior art, the present invention provides an electric power sensor for power monitoring, which has the advantage of being able to adjust the position of the monitored transmission line, and solves the problem that the transmission line itself is affected by gravity, causing the transmission line to sag and contact the bottom of the center hole of the current transformer, thereby affecting the accuracy of the current transformer in monitoring the transmission line.

[0006] (II) Technical solution

[0007] In order to achieve the above-mentioned purpose of being able to adjust the position of the monitored power transmission line, the present invention provides the following technical solutions:

[0008] A power sensor for power monitoring, comprising:

[0009] A base, the top of which is fixedly connected to a lower mutual inductor, the top of which is provided with an upper mutual inductor, and a mutual inductor body is formed between the lower mutual inductor and the upper mutual inductor;

[0010] A limiting mechanism, wherein the limiting mechanism comprises a positioning component arranged inside the transformer body, and an auxiliary component is arranged on the surface of the transformer body;

[0011] Among them, the positioning assembly includes two groups of mounting blocks, a mounting plate, and a telescopic bag. The two groups of mounting blocks are slidably connected to the inside of the transformer body. The number of mounting blocks in each group is two, and the two mounting blocks are symmetrically distributed. The mounting plate is fixedly connected to the surface of the mounting block, and the mounting plate is slidably connected to the inner wall of the transformer body. The opposite sides of the two mounting blocks are embedded with telescopic bags.

[0012] As a preferred solution of the power sensor for power monitoring described in the present invention: a gas storage cavity is opened inside the transformer body, and an extrusion plate is slidably connected to the inner wall of the gas storage cavity, and carbon dioxide gas is filled between the side of the extrusion plate close to the mounting plate and the inside of the gas storage cavity, and a connecting rod is fixedly connected to the surface of the extrusion plate, and the other end of the connecting rod passes through the transformer body and is fixedly connected to the surface of the mounting plate.

[0013] Based on the above technical features: the movement of the mounting block is limited by the mounting plate, thereby improving the stability of the mounting block during movement, and in this process, the connecting rod can be driven to move the extrusion plate synchronously.

[0014] As a preferred solution of the power sensor for power monitoring described in the present invention: two symmetrically distributed connecting cavities are opened on the side of the mounting block away from the telescopic bag, and a conduit is arranged inside the connecting cavity, and the conduit is a hose material component.

[0015] Based on the above technical features: the conduit made of hose material can ensure good transportation of carbon dioxide gas during the movement of the installation block.

[0016] As a preferred solution of the power sensor for power monitoring described in the present invention: one end of the conduit passes through the mounting block and is connected to the adjacent telescopic bag, and the other end of the conduit passes through the connecting cavity and is connected to the adjacent air storage cavity.

[0017] Based on the above technical features: injecting squeezed carbon dioxide into the interior of the telescopic bag through a catheter can inflate the telescopic bag.

[0018] As a preferred solution of the power sensor for power monitoring described in the present invention: a sliding rod is fixedly connected to the surface of the mounting block, the other end of the sliding rod passes through the transformer body, and the cross-sectional shape of the sliding rod is T-shaped.

[0019] Based on the above technical features: the installation block can be driven to move synchronously by adjusting the slide bar.

[0020] As a preferred solution of the power sensor for power monitoring described in the present invention: the bellows is a rubber component, and a side of the bellows away from the mounting block is provided with anti-slip grooves.

[0021] Based on the above technical features: the anti-slip pattern is used to enhance the friction between the telescopic bag and the surface of the power transmission line, thereby enhancing the limiting effect.

[0022] As a preferred solution of the power sensor for power monitoring described in the present invention: the auxiliary component includes two groups of adjustment plates that are slidably connected to both sides of the transformer body, each group of adjustment plates has two adjustment plates, the two adjustment plates are symmetrically distributed, the cross-sectional shape of the adjustment plate is an arc shape, and an adjustment groove is provided on the side of the adjustment plate close to the transformer body, and the sliding rod is slidably connected to the inner wall of the adjacent adjustment groove.

[0023] Based on the above technical features: the adjustment slot is used to adjust the position of the slide bar, and the position of the adjustment slot can be adjusted by rotating the adjustment plate.

[0024] As a preferred solution of the power sensor for power monitoring described in the present invention: a limiting hole is opened on the side of the adjustment plate close to the transformer body, a trigger rod is provided on the inner wall of the limiting hole, the end of the trigger rod away from the transformer body passes through the adjustment plate, a connecting ring slidably connected to the inner wall of the limiting hole is fixedly connected to the surface of the trigger rod, an indication area is provided on the surface of the trigger rod, a second spring is fixedly connected to the side of the connecting ring away from the transformer body, and the other end of the second spring is fixedly connected to the inner wall of the limiting hole.

[0025] Based on the above technical features: the setting of the indicator area is used to assist the staff in judging whether the installation is in place, so as to avoid the situation where the installation is not in place and causes separation during use.

[0026] As a preferred solution of the power sensor for power monitoring described in the present invention: the distance between the end of the adjustment groove close to the limiting hole and the inner side of the connecting ring is smaller than the distance between the end of the adjustment groove away from the limiting hole and the inner side of the connecting ring.

[0027] Based on the above technical features: the inner wall of the adjusting groove is used to push the slide bar to achieve the effect of adjusting the position of the slide bar.

[0028] As a preferred solution of the power sensor for power monitoring described in the present invention: the auxiliary component also includes a limit rod slidably connected to the inner wall of the transformer body, a first spring is fixedly connected between one end of the limit rod and the inner wall of the transformer body, the other end of the limit rod passes through the transformer body, and a wedge surface is provided on the end of the limit rod away from the first spring.

[0029] Based on the above technical features: during the rotation of the adjustment plate, the wedge surface of the limit rod can be squeezed to shrink it into the interior of the transformer body.

[0030] (III) Beneficial effects

[0031] Compared with the prior art, the present invention provides a power sensor for power monitoring, which has the following

[0032] Beneficial effects:

[0033] 1. By setting the positioning component, the position of the transmission line can be adjusted synchronously in the process of limiting the transformer body under the cooperation of the positioning component and the auxiliary component. The transmission line can be clamped by adjusting the two symmetrically arranged mounting blocks and the telescopic bag to ensure that the transmission line is located at the center of the inner hole of the transformer body, which effectively improves the monitoring effect of the transmission line. In addition, since the internal filling of the telescopic bag is carbon dioxide, it will not cause excessive extrusion and damage to the transmission line while ensuring a good fitting effect. When a fire occurs, the telescopic bag of the rubber material component can be damaged due to the open flame, so that the unfilled carbon dioxide can be discharged, thereby achieving the effect of delaying the fire.

[0034] 2. By setting up auxiliary components, the position of the upper transformer and the lower transformer can be quickly limited after they are closed. The operation is simple, and the indicator area on the trigger rod can assist the staff in judging whether the installation is in place, so as to avoid the influence of inadequate installation on the subsequent monitoring effect of the transmission line. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 It is a structural schematic diagram of the present invention;

[0036] Figure 2 It is a schematic diagram of separation of the upper mutual inductor and the lower mutual inductor of the present invention;

[0037] Figure 3 It is a schematic diagram of the connection between the positioning component and the auxiliary component of the present invention;

[0038] Figure 4 It is a partial cross-sectional view of the present invention;

[0039] Figure 5 for Figure 4 A magnified view of middle;

[0040] Figure 6 It is a schematic diagram of the distribution of the limit rod and the first spring of the present invention;

[0041] Figure 7 It is a schematic diagram of the opening of the adjustment slot of the present invention;

[0042] Figure 8 for Figure 7Enlarged view of B.

[0043] In the figure: 100, base; 110, lower mutual inductor; 120, upper mutual inductor; 200, limit mechanism; 210, positioning assembly; 2101, air storage chamber; 2102, extrusion plate; 2103, telescopic bag; 2104, slide bar; 2105, mounting block; 2106, guide tube; 2107, connecting rod; 2108, mounting plate; 220, auxiliary assembly; 2201, first spring; 2202, limit rod; 2203, adjustment plate; 2204, adjustment slot; 2205, limit hole; 2206, trigger rod; 2207, indication area; 2208, second spring; 2209, connecting ring. DETAILED DESCRIPTION

[0044] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0045] See also Figure 1-8 The present invention provides a technical solution: a power sensor for power monitoring, comprising:

[0046] A base 100, a lower mutual inductor 110 is fixedly connected to the top of the base 100, an upper mutual inductor 120 is arranged on the top of the lower mutual inductor 110, and a mutual inductor body is formed between the lower mutual inductor 110 and the upper mutual inductor 120;

[0047] The limiting mechanism 200 includes a positioning component 210 disposed inside the transformer body, and an auxiliary component 220 is disposed on the surface of the transformer body;

[0048] Among them, the positioning assembly 210 includes two groups of mounting blocks 2105, a mounting plate 2108, and a telescopic bag 2103. The two groups of mounting blocks 2105 are slidably connected to the inside of the transformer body. The number of mounting blocks 2105 in each group is two, and the two mounting blocks 2105 are symmetrically distributed. The mounting plate 2108 is fixedly connected to the surface of the mounting block 2105, and the mounting plate 2108 is slidably connected to the inner wall of the transformer body. The opposite sides of the two mounting blocks 2105 are embedded with telescopic bags 2103.

[0049] See also Figure 1-5A gas storage cavity 2101 is provided inside the transformer body, and an extrusion plate 2102 is slidably connected to the inner wall of the gas storage cavity 2101. Carbon dioxide gas is filled between the side of the extrusion plate 2102 close to the mounting plate 2108 and the inside of the gas storage cavity 2101. A connecting rod 2107 is fixedly connected to the surface of the extrusion plate 2102, and the other end of the connecting rod 2107 passes through the transformer body and is fixedly connected to the surface of the mounting plate 2108.

[0050] Two symmetrically distributed connecting cavities are provided on one side of the mounting block 2105 away from the telescopic bag 2103 , and a conduit 2106 is provided inside the connecting cavity. The conduit 2106 is a member made of a hose material.

[0051] One end of the conduit 2106 passes through the mounting block 2105 and is connected to the adjacent telescopic bag 2103 , and the other end of the conduit 2106 passes through the connecting cavity and is connected to the adjacent air storage cavity 2101 .

[0052] A sliding rod 2104 is fixedly connected to the surface of the mounting block 2105 , and the other end of the sliding rod 2104 passes through the transformer body, and the cross-section of the sliding rod 2104 is T-shaped.

[0053] The telescopic bag 2103 is a rubber component, and a side of the telescopic bag 2103 away from the mounting block 2105 is provided with anti-slip grooves.

[0054] The specific transformer body is an open-close transformer, which can be easily installed and monitored for transmission lines by opening and closing;

[0055] The transmission line to be monitored is placed inside the lower transformer 110 and the upper transformer 120 is closed. The following description is based on the working principle of the mounting block 2105 of the upper transformer 120. The working principle of the mounting block 2105 on the lower transformer 110 is the same, but the driving direction is opposite.

[0056] By pulling the slide bar 2104 downward, the mounting block 2105 can be driven to move downward synchronously, and in this process, the mounting plate 2108 connected thereto can be driven to move synchronously, and the mounting plate 2108 is set to guide the mounting block 2105 when it moves, so that its movement is more stable. In the process of the movement of the mounting plate 2108, the connecting rod 2107 can be driven to move synchronously, thereby driving the extrusion plate 2102 to move downward along the inner wall of the gas storage chamber 2101, and at this time, the carbon dioxide stored in the gas storage chamber 2101 can be squeezed, and the squeezed carbon dioxide can be injected into the interior of the telescopic capsule 2103 through the conduit 2106 and inflate the telescopic capsule 2103. Through the synchronous movement of the two symmetrically arranged telescopic capsules 2103 and the mounting block 2105, the power transmission line to be monitored can be located at the center of the inner hole of the transformer body, thereby improving the accuracy of monitoring, and the anti-slip pattern set on the surface of the telescopic capsule 2103 can increase the friction with the surface of the transmission line, thereby enhancing the limiting effect, and avoiding the monitoring data error caused by position offset during use;

[0057] When a fire occurs in the transmission line, since the bellows 2103 is made of rubber material, open flames will cause damage to the bellows 2103. At this time, the carbon dioxide used to inflate the bellows 2103 can be discharged from the inside of the bellows 2103 due to the damage to the bellows 2103, thereby reducing the oxygen content in the surrounding environment, achieving the effect of delaying the fire or even extinguishing the fire, and buying precious time for subsequent fire-fighting remedial measures.

[0058] See also Figure 1 , Figure 2 , Figure 6 , Figure 7 and Figure 8 The auxiliary component 220 includes two groups of adjustment plates 2203 that are slidably connected to both sides of the transformer body, each group of the adjustment plates 2203 has two adjustment plates 2203 that are symmetrically distributed. The cross-sectional shape of the adjustment plate 2203 is an arc shape. An adjustment groove 2204 is provided on one side of the adjustment plate 2203 close to the transformer body, and the sliding rod 2104 is slidably connected to the inner wall of the adjacent adjustment groove 2204.

[0059] A limiting hole 2205 is provided on the side of the adjustment plate 2203 close to the transformer body, and a trigger rod 2206 is provided on the inner wall of the limiting hole 2205. The end of the trigger rod 2206 away from the transformer body passes through the adjustment plate 2203, and a connecting ring 2209 slidably connected to the inner wall of the limiting hole 2205 is fixedly connected to the surface of the trigger rod 2206. An indicating area 2207 is provided on the surface of the trigger rod 2206. A second spring 2208 is fixedly connected to the side of the connecting ring 2209 away from the transformer body, and the other end of the second spring 2208 is fixedly connected to the inner wall of the limiting hole 2205.

[0060] The distance between one end of the adjusting groove 2204 close to the limiting hole 2205 and the inner side of the connecting ring 2209 is smaller than the distance between one end of the adjusting groove 2204 far from the limiting hole 2205 and the inner side of the connecting ring 2209 .

[0061] The auxiliary component 220 also includes a limit rod 2202 slidably connected to the inner wall of the transformer body, a first spring 2201 is fixedly connected between one end of the limit rod 2202 and the inner wall of the transformer body, the other end of the limit rod 2202 passes through the transformer body, and a wedge surface is provided at one end of the limit rod 2202 away from the first spring 2201.

[0062] The slide bar 2104 can be adjusted by using the adjustment slot 2204 by rotating the adjustment plate 2203. Since the distance between the end of the adjustment slot 2204 close to the limiting hole 2205 and the inner side of the connecting ring 2209 is smaller than the distance between the end of the adjustment slot 2204 far from the limiting hole 2205 and the inner side of the connecting ring 2209, the inner wall of the adjustment slot 2204 can be used to squeeze the slide bar 2104 downward during the rotation of the adjustment plate 2203, thereby achieving the effect of driving the mounting block 2105 to move downward and cooperating with the positioning assembly 210 to achieve the bulging of the telescopic bag 2103 without separate operation. In addition, during the movement of the adjustment plate 2203, the wedge surface of the limiting rod 2202 on the moving path can be squeezed so that the limiting The rod 2202 can be compressed and retracted into the interior of the transformer body, and in the process, the first spring 2201 can be squeezed until the limit hole 2205 moves to the limit rod 2202. Under the action of the first spring 2201, the limit rod 2202 can be driven to insert into the interior of the limit hole 2205 and push the trigger rod 2206 to pass through the adjustment plate 2203 until the indication area 2207 passes through the adjustment plate 2203 as a whole, indicating that the two are connected in place. At this time, the surface of the limit rod 2202 is used to limit the inner wall of the limit hole 2205 to prevent the adjustment plate 2203 from resetting, and at the same time, the upper transformer 120 and the lower transformer 110 are limited. The effect of limiting the position ensures that the transformer body is well limited.

[0063] Working principle: Place the transmission line to be monitored on the inner side of the lower transformer 110 and close the upper transformer 120, then rotate the adjustment plate 2203 to adjust the slide bar 2104 using the adjustment slot 2204. During this process, the inner wall of the adjustment slot 2204 can be used to squeeze the slide bar 2104 downward, thereby driving the mounting block 2105 to move downward. Cooperate with the positioning component 210 to bulge the telescopic bag 2103, so as to achieve the use of the bulged telescopic bag 2103 to adjust and limit the position of the transmission line, ensure that the transmission line is located at the center of the inner hole of the transformer body, improve the accuracy of monitoring, and do not need to be operated separately. In addition, during the movement of the adjustment plate 2203, the upper transformer 120 and the lower transformer 110 can be limited at the same time, ensuring a good limit of the closure of the transformer body.

[0064] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0065] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A power sensor for power monitoring, characterized in that: include: A base (100), wherein a lower mutual inductor (110) is fixedly connected to the top of the base (100), an upper mutual inductor (120) is arranged on the top of the lower mutual inductor (110), and a mutual inductor body is formed between the lower mutual inductor (110) and the upper mutual inductor (120); A limiting mechanism (200), the limiting mechanism (200) comprising a positioning component (210) arranged inside a transformer body, and an auxiliary component (220) is arranged on the surface of the transformer body; The positioning assembly (210) comprises two groups of mounting blocks (2105), a mounting plate (2108), and a telescopic capsule (2103); the two groups of mounting blocks (2105) are both slidably connected to the interior of the transformer body; each group of mounting blocks (2105) comprises two mounting blocks, and the two mounting blocks (2105) are symmetrically distributed; the mounting plate (2108) is fixedly connected to the surface of the mounting block (2105); the mounting plate (2108) is slidably connected to the inner wall of the transformer body; and the telescopic capsule (2103) is embedded and installed on opposite sides of the two mounting blocks (2105).

2. The power sensor for power monitoring according to claim 1, characterized in that: An air storage cavity (2101) is provided inside the transformer body, and an extrusion plate (2102) is slidably connected to the inner wall of the air storage cavity (2101), and carbon dioxide gas is filled between the side of the extrusion plate (2102) close to the mounting plate (2108) and the inside of the air storage cavity (2101), and a connecting rod (2107) is fixedly connected to the surface of the extrusion plate (2102), and the other end of the connecting rod (2107) passes through the transformer body and is fixedly connected to the surface of the mounting plate (2108).

3. The power sensor for power monitoring according to claim 2, characterized in that: The mounting block (2105) is provided with two symmetrically distributed connection cavities on a side away from the telescopic bag (2103), and a conduit (2106) is provided inside the connection cavity. The conduit (2106) is a member made of a hose material.

4. The power sensor for power monitoring as claimed in claim 3, characterized in that: One end of the conduit (2106) passes through the mounting block (2105) and is connected to the adjacent telescopic bag (2103), and the other end of the conduit (2106) passes through the connecting cavity and is connected to the adjacent air storage cavity (2101).

5. The power sensor for power monitoring according to claim 1, characterized in that: A sliding rod (2104) is fixedly connected to the surface of the mounting block (2105), the other end of the sliding rod (2104) passes through the transformer body, and the cross-sectional shape of the sliding rod (2104) is T-shaped.

6. The power sensor for power monitoring according to claim 1, characterized in that: The telescopic bag (2103) is a rubber material component, and a side of the telescopic bag (2103) away from the mounting block (2105) is provided with anti-slip grooves.

7. The power sensor for power monitoring according to claim 5, characterized in that: The auxiliary component (220) comprises two groups of adjustment plates (2203) respectively connected in a sliding manner to the two sides of the transformer body, each group of the adjustment plates (2203) comprises two adjustment plates (2203), the two adjustment plates (2203) are symmetrically distributed, the cross-sectional shape of the adjustment plates (2203) is an arc shape, an adjustment groove (2204) is provided on one side of the adjustment plate (2203) close to the transformer body, and the sliding rod (2104) is connected in a sliding manner to the inner wall of the adjacent adjustment groove (2204).

8. The power sensor for power monitoring according to claim 7, characterized in that: A limiting hole (2205) is provided on a side of the adjustment plate (2203) close to the transformer body, a trigger rod (2206) is provided on the inner wall of the limiting hole (2205), an end of the trigger rod (2206) away from the transformer body passes through the adjustment plate (2203), a connecting ring (2209) slidably connected to the inner wall of the limiting hole (2205) is fixedly connected to the surface of the trigger rod (2206), an indicating area (2207) is provided on the surface of the trigger rod (2206), a second spring (2208) is fixedly connected to the side of the connecting ring (2209) away from the transformer body, and the other end of the second spring (2208) is fixedly connected to the inner wall of the limiting hole (2205).

9. The power sensor for power monitoring according to claim 8, characterized in that: The distance between the end of the adjusting groove (2204) close to the limiting hole (2205) and the inner side of the connecting ring (2209) is smaller than the distance between the end of the adjusting groove (2204) far from the limiting hole (2205) and the inner side of the connecting ring (2209).

10. The power sensor for power monitoring according to claim 9, characterized in that: The auxiliary component (220) also includes a limit rod (2202) slidably connected to the inner wall of the transformer body, a first spring (2201) is fixedly connected between one end of the limit rod (2202) and the inner wall of the transformer body, the other end of the limit rod (2202) passes through the transformer body, and a wedge surface is provided at one end of the limit rod (2202) away from the first spring (2201).

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