High-precision electric power measurement ammeter suitable for complex load environment

Abstract

The invention discloses a high-precision electric power measurement ammeter suitable for a complex load environment, and relates to the technical field of electric power measurement. According to the invention, high-precision monitoring of the current is realized by using the polarization change of the magnetic field and the light caused by the current. The equipment structure adopts the effect of double magnetic fields, so that the stability is improved, external interference is reduced through a vacuum sealing environment, and the accuracy of a measurement result is ensured. Meanwhile, due to the modular design, the adaptability of the equipment in different environments is higher, and adjustment and maintenance are convenient. The electric power measurement ammeter has higher precision, stronger adaptability and longer service life, and is suitable for current monitoring of complex loads.

Description

Technical Field

[0001] The invention relates to the technical field of electric power measurement, and in particular to a high-precision electric power measurement meter suitable for complex load environments. Background Art

[0002] At present, in the field of electric power measurement, traditional current detection methods mainly rely on voltage, current sensors or Hall effect sensors. Although these methods can work effectively under normal conditions, they often cannot provide sufficient sensitivity and stability in complex environments or with high precision requirements. For example, voltage and current sensors are easily disturbed by ambient temperature, which affects the measurement accuracy. In order to improve the accuracy and stability of current measurement, most of them use multi-sensor redundant monitoring to measure electric power, but they still face the problem of poor environmental adaptability in practical applications. The disadvantages of the prior art include: the equipment structure is complex, the measurement accuracy is greatly affected by environmental factors, and it is difficult to achieve long-term high-precision current monitoring. Summary of the invention

[0003] In order to overcome the defects of the above-mentioned prior art, the present invention provides the following technical solutions: a high-precision electric power measurement meter suitable for complex load environments, comprising a conductive column, threaded holes are arranged at the axial positions of both ends of the conductive column, and welding connection disks are threadedly fixedly installed at both ends of the conductive column, and the two welding connection disks are fixedly connected to the wires of the required monitoring circuit by soldering; two O-shaped disks are embedded on both sides of the outer surface of the conductive column, the O-shaped disks are concentrically arranged with the conductive column, and the two O-shaped disks are conductively connected by a conductive wire, a coil is arranged in series in the conductive wire, two aerogel blocks are overhead at the axial center of the coil, and a permanent magnet block is fixedly installed between the two aerogel blocks; movable conductive plates are fixedly provided on the opposite back surfaces of the two aerogel blocks, and fixed conductive plates are coaxially provided on the sides of the two movable conductive plates.

[0004] Preferably, the two movable conductive plates are conductively connected via a conductive layer; the axial positions of the two aerogel blocks and the permanent magnet block are slidably sleeved on a ceramic slide rod, and the ceramic slide rod is insulated from the conductive layer.

[0005] Preferably, the ceramic slide bar is fixed on the rectangular frame, two fixed conductive plates are fixed at both ends of the ceramic slide bar, and the two fixed conductive plates are also fixedly matched with the rectangular frame, and a reset spring is fixedly provided between the opposite surfaces of each fixed conductive plate and the movable conductive plate. The elastic force of the two reset springs needs to be adjusted according to the actual installation angle (replace different reset springs), so that the permanent magnet block is located at the center of the coil and the elastic force of the two reset springs is the same.

[0006] Preferably, the return spring is arranged in a circle on the ceramic slide rod, wherein the coil is fixedly mounted on the rectangular frame; a sealed shell is arranged on the outer side of the conductive column, and the two ends of the sealed shell are fixedly sealed with the sealing side plates at both ends of the conductive column, so that the sealed shell and the two sealing side plates form an enclosed space, and the enclosed space is set in a vacuum.

[0007] Preferably, the rectangular frame is fixedly mounted on two parallel reinforced partitions, the two reinforced partitions are sleeved on the conductive posts, the two reinforced partitions are also fixedly matched with the inner wall of the sealed shell, and an indicator arrow is arranged on the outer surface of the sealed shell.

[0008] Preferably, an overhead frame is fixedly mounted on the inner wall of the sealed shell, a detection sealing cover is fixedly mounted on the overhead frame, and the detection sealing cover is also fixedly matched with the two reinforced partitions.

[0009] Preferably, a top cover plate and a bottom cover plate are fixedly mounted on the detection sealing cover, wherein the detection sealing cover is fixed between the opposite surfaces of the top cover plate and the bottom cover plate, and a plurality of magneto-optical glasses and vacuum tubes are arranged in a rectangular array inside the magneto-optical glass, and all the magneto-optical glasses and vacuum tubes are arranged in series through a trapezoidal reflector cross-end; A light emitter is fixedly arranged on the top cover plate, and a light receiving analyzer is fixedly arranged on the bottom cover plate, wherein the light emitted by the light emitter coincides with the axis of the first magneto-optical glass, and the light receiving analyzer is used for receiving the light emitted by the light emitter.

[0010] Preferably, all the trapezoidal reflectors are fixed on the opposite surfaces of the top cover plate and the bottom cover plate, wherein a pressure gauge is arranged inside the sealed housing to monitor the pressure inside the sealed housing.

[0011] Compared with the prior art, the present invention has the following beneficial effects: (1) The present invention accurately monitors the current inside the conductive column by measuring the change in capacitance between the fixed conductive plate and the movable conductive plate. Since the deformation of the reset spring is proportional to the current in the conductive column, the current can be accurately reflected. The change in capacitance is directly related to the displacement of the permanent magnet block, which is affected by the electromagnetic force, and the current can be efficiently monitored; (2) The present invention improves the stability of current measurement by arranging O-shaped disks at both ends of the conductive column and connecting coils, so that the magnetic field generated interacts with the magnetic field around the conductive column. The magnetic field generated by the coil enhances the motion response of the permanent magnet block, making the sensor more sensitive to current changes, thereby further improving the measurement accuracy; (3) The present invention utilizes a combination of magneto-optical glass and a vacuum tube to change the electronic arrangement of the lattice inside the magneto-optical glass to affect the polarization direction of the light, thereby increasing the propagation path of the light and improving the measurement sensitivity. By detecting the polarization angle through a light receiving analyzer, the change in the current in the conductive column can be more accurately judged, ensuring the high sensitivity of the measurement result; (4) The present invention adopts a sealed housing and vacuum environment design to reduce the interference of the external environment on the measurement result. The vacuum design of the enclosed space effectively isolates the impact of external pressure changes on the measuring device, thereby improving the reliability and accuracy of the device in complex environments; (5) The components such as the reset spring and optical elements in the present invention adopt a modular design and can be flexibly adjusted according to different application requirements. For example, by replacing different springs to adjust the elastic force of the reset spring to adapt to different installation angles, it is ensured that the device can work normally under various loads. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the arrow structure of the present invention.

[0013] Figure 2 It is a schematic diagram of the sealing shell structure of the present invention.

[0014] Figure 3 It is a schematic diagram of the conductive column structure of the present invention.

[0015] Figure 4 It is a schematic diagram of the coil structure of the present invention.

[0016] Figure 5 This is a schematic diagram of the internal structure of the detection sealing cover of the present invention.

[0017] Figure 6 This is the arrangement diagram of the magneto-optical glass and vacuum tube of the present invention.

[0018] In the figure: 101-sealed housing; 102-indicator arrow; 103-sealed side plate; 104-conductive column; 105-welding connection plate; 106-O-shaped plate; 107-reinforced partition; 108-rectangular frame; 109-overhead frame; 110-detection sealing cover; 111-conductive wire; 112-coil; 113-ceramic slide rod; 114-fixed conductive plate; 115-reset spring; 116-movable conductive plate; 117-aerogel block; 118-permanent magnet block; 119-conductive layer; 120-top cover plate; 121-bottom cover plate; 122-light receiving polarizer; 123-light transmitter; 124-trapezoidal reflector; 125-magneto-optical glass; 126-vacuum tube. DETAILED DESCRIPTION

[0019] The following is combined with Figure 1-6 , and further illustrate the technical solution of the present invention through specific implementation methods.

[0020] The present invention provides a high-precision electric power measurement meter suitable for complex load environments, comprising a conductive column 104, wherein threaded holes are arranged at the axial positions of both ends of the conductive column 104, and welding connection plates 105 are threadedly fixedly installed at both ends of the conductive column 104, and the two welding connection plates 105 are fixedly connected to the wires of the required monitoring circuit by soldering; two O-shaped disks 106 are embedded on both sides of the outer surface of the conductive column 104, the O-shaped disks 106 are concentrically arranged with the conductive column 104, and the two O-shaped disks 106 are conductively connected through a conductive wire 111, a coil 112 is arranged in series in the conductive wire 111, two aerogel blocks 117 are overhead arranged at the axial center of the coil 112, and a permanent magnet block 118 is fixedly installed between the two aerogel blocks 117; movable conductive plates 116 are fixedly arranged on the opposite back surfaces of the two aerogel blocks 117, and fixed conductive plates 114 are coaxially arranged on the sides of the two movable conductive plates 116.

[0021] The two movable conductive plates 116 are conductively connected through the conductive layer 119; the two aerogel blocks 117 and the permanent magnet block 118 are slidably sleeved on the ceramic slide bar 113 at the axial position, and the ceramic slide bar 113 is insulated and matched with the conductive layer 119. The ceramic slide bar 113 is fixed on the rectangular frame 108, and the two fixed conductive plates 114 are fixed at both ends of the ceramic slide bar 113, and the two fixed conductive plates 114 are also fixedly matched with the rectangular frame 108. A reset spring 115 is fixedly arranged between the opposite surfaces of each fixed conductive plate 114 and the movable conductive plate 116. The elastic force of the two reset springs 115 needs to be adjusted according to the actual installation angle (replacing different reset springs 115), so that the permanent magnet block 118 is located at the center of the coil 112, and the elastic force of the two reset springs 115 is the same. The reset spring 115 is arranged around the ceramic slide bar 113, wherein the coil 112 is fixedly mounted on the rectangular frame 108; a sealed housing 101 is arranged outside the conductive column 104, and the two ends of the sealed housing 101 are fixedly sealed with the two ends of the conductive column 104 by the fixed sealing side plates 103, so that the sealed housing 101 and the two sealed side plates 103 enclose a closed space, and the closed space is set in a vacuum. The rectangular frame 108 is fixedly mounted on two parallel reinforced partitions 107, and the two reinforced partitions 107 are sleeved on the conductive column 104. The two reinforced partitions 107 are also fixedly matched with the inner wall of the sealed housing 101, and an indicating arrow 102 is arranged on the outer surface of the sealed housing 101. An overhead frame 109 is also fixedly mounted on the inner wall of the sealed housing 101, and a detection sealing cover 110 is fixedly mounted on the overhead frame 109, and the detection sealing cover 110 is also fixedly matched with the two reinforced partitions 107.

[0022] A top cover plate 120 and a bottom cover plate 121 are fixedly mounted on the detection sealing cover 110, wherein the detection sealing cover 110 is fixed between the opposite surfaces of the top cover plate 120 and the bottom cover plate 121, a plurality of magneto-optical glasses 125 and vacuum tubes 126 are arranged in a rectangular array inside the magneto-optical glass 125, and all the magneto-optical glasses 125 and vacuum tubes 126 are arranged in series through a trapezoidal reflector 124 in a cross-end manner; a light emitter 123 is fixedly arranged on the top cover plate 120, and a light receiving polarizer 122 is fixedly arranged on the bottom cover plate 121, wherein the light emitted by the light emitter 123 coincides with the axis of the first magneto-optical glass 125, and the light receiving polarizer 122 is used to receive the light emitted by the light emitter 123. All the trapezoidal reflectors 124 are fixed on the opposite surfaces of the top cover plate 120 and the bottom cover plate 121, wherein a barometer is arranged inside the sealed housing 101 for monitoring the pressure inside the sealed housing 101.

[0023] When current passes through the conductive column 104, a magnetic field is generated around the conductive column 104, and the magnetic field passes through the axis of the coil 112 (the ratio of the detection sealing cover 110, the coil 112 and the conductive column 104 in the figure is not the actual size. For the convenience of description, the detection sealing cover 110 and the coil 112 in the figure are enlarged for display). At this time, the permanent magnet block 118 is subjected to magnetic force under the action of the magnetic field, thereby driving the aerogel block 117 to move, and the aerogel block 117 drives the movable conductive plate 116 to move. At this time, the two reset springs 115 will be deformed, and the distance between the fixed conductive plate 114 and the movable conductive plate 116 will change. Therefore, by measuring the distance between the fixed conductive plate 114 and the movable conductive plate 116, the distance between the fixed conductive plate 114 and the movable conductive plate 116 will change. The capacitance value between the conductive plates 116 can be used to determine the displacement of the permanent magnet 118. The displacement of the permanent magnet 118 reflects the deformation of the reset spring 115 (the reset spring 115 is insulated from the fixed conductive plate 114 and the movable conductive plate 116). The deformation of the reset spring 115 is proportional to the magnitude of the force applied. The force on the reset spring 115 comes from the magnetic force applied to the permanent magnet 118. The magnetic force applied to the permanent magnet 118 is proportional to the magnetic field strength around the conductive column 104. The magnetic field strength is proportional to the current in the conductive column 104. Therefore, the current inside the conductive column 104 can be monitored through the capacitance values ​​of the fixed conductive plate 114 and the movable conductive plate 116, thereby obtaining the power.

[0024] At the same time, O-shaped disks 106 are set at both ends of the conductive column 104. There will be a certain resistance on the conductive column 104 between the two O-shaped disks 106, so there will be a potential difference on the two O-shaped disks 106. At this time, part of the current will flow through the conductive wire 111, and then the coil 112 will generate magnetic force, which will also push the permanent magnet block 118 to move. Therefore, the permanent magnet block 118 will be affected by the dual effects of the magnetic field around the conductive column 104 and the magnetic field of the coil 112.

[0025] According to the actual situation, a suitable number of magneto-optical glasses 125 and vacuum tubes 126 are selected. The light emitted by the light emitter 123 enters the first magneto-optical glass 125 through polarization, and then is emitted from the other end of the magneto-optical glass 125 to the trapezoidal reflector 124. The light is reflected to the next vacuum tube 126 through the two reflective surfaces of the trapezoidal reflector 124, and then is captured by the vacuum tube 126 to the next trapezoidal reflector 124. This reciprocating reflection makes the propagation direction of the light inside all magneto-optical glasses 125 consistent, and the propagation direction of the light inside all vacuum tubes 126 is consistent. They are all consistent, and the axis of the magneto-optical glass 125 and the vacuum tube 126 are parallel to the direction of the surrounding magnetic field (almost). When the magnetic field around the conductive column 104 changes, the current passing through the conductive column 104 changes (power changes). Since the magnetic field passes through the magneto-optical glass 125, the polarization direction of the light will change (rotate along the axis of the magneto-optical glass 125, or the direction of the magnetic field). This is because after the magnetic field acts on the magneto-optical glass 125, the electrons in the lattice inside the magneto-optical glass 125 will be rearranged, thereby affecting the propagation of light. The propagation path length of the light is extended through multiple magneto-optical glasses 125, thereby increasing the sensitivity of the measurement. Finally, the light will be captured by the light receiving polarizer 122, and the light receiving polarizer 122 detects the polarization angle of the light to determine the magnitude of the current inside the conductive column 104.

Claims

1. A high-precision electric power measurement meter suitable for complex load environments, characterized by: The conductive column (104) comprises a conductive column (104), wherein threaded holes are provided at the axis positions of both ends of the conductive column (104), and welding connection plates (105) are threadedly fixedly installed at both ends of the conductive column (104), and the two welding connection plates (105) are fixedly connected to the wires of the required monitoring circuit by soldering; two O-shaped plates (106) are embedded on both sides of the outer surface of the conductive column (104), the O-shaped plates (106) are concentrically arranged with the conductive column (104), and the two O-shaped plates (106) are conductively connected by a conductive wire (111), a coil (112) is arranged in series in the conductive wire (111), and two aerogel blocks (117) are overheadly arranged at the axis center of the coil (112), and a permanent magnet block (118) is fixedly installed between the two aerogel blocks (117); The opposite back surfaces of the two aerogel blocks (117) are both fixedly provided with movable conductive plates (116), and the sides of the two movable conductive plates (116) are both coaxially provided with fixed conductive plates (114).

2. A high-precision electric power measurement meter suitable for complex load environments according to claim 1, characterized in that: The two movable conductive plates (116) are conductively connected via a conductive layer (119); the two aerogel blocks (117) and the permanent magnet block (118) are slidably sleeved on the ceramic slide rod (113) at the axial center position, and the ceramic slide rod (113) and the conductive layer (119) are insulated and matched.

3. A high-precision electric power measurement meter suitable for complex load environments according to claim 2, characterized in that: The ceramic slide bar (113) is fixed on the rectangular frame (108), and two fixed conductive plates (114) are fixed on both ends of the ceramic slide bar (113). The two fixed conductive plates (114) are also fixedly matched with the rectangular frame (108), and a return spring (115) is fixedly arranged between the opposite surfaces of each fixed conductive plate (114) and the movable conductive plate (116).

4. The high-precision electric power measurement meter suitable for complex load environments according to claim 3, characterized in that: A return spring (115) is arranged around the ceramic slide rod (113), wherein the coil (112) is fixedly mounted on the rectangular frame (108); a sealed housing (101) is arranged outside the conductive column (104), and the two ends of the sealed housing (101) are fixedly sealed with the sealed side plates (103) fixed at the two ends of the conductive column (104), so that the sealed housing (101) and the two sealed side plates (103) enclose a closed space, and the closed space is set in a vacuum.

5. The high-precision electric power measurement meter suitable for complex load environments according to claim 4, characterized in that: The rectangular frame (108) is fixedly mounted on two parallel reinforced partitions (107), the two reinforced partitions (107) are sleeved on the conductive pillars (104), the two reinforced partitions (107) are also fixedly matched with the inner wall of the sealed housing (101), and an indicator arrow (102) is provided on the outer surface of the sealed housing (101).

6. The high-precision electric power measurement meter suitable for complex load environments according to claim 5, characterized in that: An overhead frame (109) is also fixedly mounted on the inner wall of the sealed housing (101), a detection sealing cover (110) is fixedly mounted on the overhead frame (109), and the detection sealing cover (110) is also fixedly matched with the two reinforced partitions (107).

7. The high-precision electric power measurement meter suitable for complex load environments according to claim 6, characterized in that: A top cover plate (120) and a bottom cover plate (121) are fixedly mounted on the detection sealing cover (110), wherein the detection sealing cover (110) is fixed between opposite surfaces of the top cover plate (120) and the bottom cover plate (121), and a plurality of magneto-optical glasses (125) and vacuum tubes (126) are arranged in a rectangular array inside the magneto-optical glass (125), and all the magneto-optical glasses (125) and vacuum tubes (126) are arranged in series via a trapezoidal reflector (124) and cross-connected. A light emitter (123) is fixedly disposed on the top cover plate (120), and a light receiving analyzer (122) is fixedly disposed on the bottom cover plate (121), wherein the light emitted by the light emitter (123) coincides with the axis of the first magneto-optical glass (125), and the light receiving analyzer (122) is used to receive the light emitted by the light emitter (123).

8. The high-precision electric power measurement meter suitable for complex load environments according to claim 7, characterized in that: All the trapezoidal reflectors (124) are fixed on the opposite surfaces of the top cover plate (120) and the bottom cover plate (121), wherein a barometer is arranged inside the sealed housing (101) for monitoring the pressure inside the sealed housing (101).

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