[0027] The embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.
[0028] The design idea of the present invention is: the present invention converts the levelness in different directions under the high potential environment into light signals with different color differences, after performing color light synthesis, the levelness is characterized by the mixed light and transmitted by the optical fiber to the low potential end, through the light color- The levelness converter restores the mixed light to the levelness in different directions to realize the levelness measurement. The measuring device for realizing the above method is mainly composed of levelness-light color sensor and light color-levelness converter connection. The optical fibers, lenses, and floats that make up the levelness-light color sensor are all non-metallic insulating materials, and the interference of electric and magnetic fields under high potential environment will not affect it. Moreover, the sensor is small in size, only equivalent to a bubble level meter , It is convenient to install in the high potential parts of electrical equipment. The light color-levelness converter processes the optical signal transmitted from the high-potential end to the zero-potential end by the fiber with high insulation performance, and restores the mixed light to levelness through color light analysis and levelness calculation.
[0029] Based on the above design ideas, the levelness measuring device for high-potential components of electrical equipment of the present invention includes a levelness-light color sensor and a light color-levelness converter. Such as figure 1 As shown, the level-light color sensor includes a liquid storage cavity 6, an adjusting seat 10, a float 3, a beam splitting prism 9, a collimating lens 2, and a convex lens 5. The collimating lens includes a lower collimating lens and an upper collimating lens. The straight lenses are connected to the light color-levelness converter through the optical fiber 1 respectively. The specific installation relationship of the levelness-light color sensor is:
[0030] The liquid storage cavity 6 is installed on the adjusting seat 10. The liquid storage cavity 6 is composed of three branches and a central cavity connected to each other. The liquid storage cavity 6 is filled with a transparent liquid with good light permeability. The three branches can be The light provides the incident light path 7, which gradually narrows from the central cavity to the end, and the end is equipped with a collimating lens and provides incident light of different colors (for example, three branches, respectively, red, green, and blue). The floating ball 3 is a black light-shielding sphere, which floats above the liquid surface of the liquid storage cavity 6. The floating ball 3 can move freely in the central cavity and three branches of the liquid storage cavity according to the level change. When the floating ball 3 is in the central cavity, it blocks the vertical upward reflected light of each color. When the floating ball 3 is in the three branches, it blocks the monochromatic incident light in the horizontal direction of the corresponding branch. The dichroic prism 9 is a transparent hexagonal pyramid and is fixedly mounted under the central cavity. The upper collimating lens is installed on the upper fiber end of the float 3, the lower collimating lens is installed on the lower fiber end of the beam splitting prism 9, and the convex lens 5 includes an upper convex lens and a lower convex lens, which are respectively installed on the upper collimator Below the lens and above the lower collimating lens. The outer surface of the pyramid of the beam splitting prism reflects the incident light vertically upwards (partial reflection). The reflected light 4 that is not blocked by the float 3 enters the upper collimating lens above the liquid storage cavity 6 after being collected by the upper convex lens, and the other part enters the beam splitting prism The refracted light 8 inside 9 is totally reflected on the inner surface of the dichroic prism 9, propagates vertically downwards, and enters the lower collimating lens below the liquid storage cavity 6 after being collected by the lower convex lens. In order to achieve vertical upward partial reflection and downward total reflection, the angle A between the side surface of the dichroic prism 9 and the central axis should satisfy (n 1 , N 2 (Respectively the refractive index of liquid and pyramid):
[0031]
[0032] The two collimating lenses (the lower collimating lens and the upper collimating lens) of the levelness measuring device respectively transmit the downward trichromatic light and the upward trichromatic light not blocked by the floating ball to the remote light color-levelness converter, When the lower optical fiber returns white synthetic light, the device is in normal working condition. The conversion component first adjusts the intensity of the incident light according to the measured values of the three-color light under the collimating lens, so that the red, green, and blue light intensity returned by the lower fiber is equal (I R = I G = I B ), marked as I x; Then analyze the levelness of the equipment according to the light intensity of each color, and output the offset direction and angle.
[0033] The levelness measurement method of the present invention, such as figure 2 Shown: If the three-color light (red, green, and blue) returned by the upper fiber is marked as i R , I G , I B ) Satisfies i R ≈i G ≈i B <
[0034] Step 1. Fix the levelness-light color sensor on the electrical equipment that needs to detect the levelness, adjust the initial state of the device to the horizontal position through the adjusting seat, and convert the levelness-light color sensor and light color-levelness through the optical fiber The device is connected.
[0035] After the optical fiber connects the levelness-light-color sensor with the light-color-levelness converter, the sensor needs to be calibrated: turn on the light-color-levelness converter and check whether there is synthetic light return. If the optical fiber connects the levelness-light color sensor to the lower part of the optical fiber, the three colors of the combined light have the same intensity, indicating that the levelness-light color sensor and the light color-levelness converter are working normally, otherwise, use the light color-level to turn on The degree converter calibrates the device.
[0036] Step 2. Levelness-The upper and lower ends of the light color sensor can output three-color light mixed in different proportions according to different levelness, which is transmitted by the optical fiber and received by the light color-levelness converter, and finally the equipment levelness is performed according to the following steps monitor:
[0037] ⑴ If the levelness-the three colors of the synthetic light returned from the upper end of the light color sensor are balanced, and the light intensity is much lower than the lower light intensity, the device is in a horizontal position;
[0038] ⑵ If the levelness-the synthetic light intensity returned from the lower end of the light color sensor is unbalanced, and there is no change in the light intensity balance of the lower end fiber, the device is slightly tilted, and the light color-levelness converter automatically calculates the tilt angle direction and displays it;
[0039] (3) If the combined light intensity returned by the optical fiber at the upper and lower ends of the levelness-light color sensor is unbalanced and has the same obvious color cast, the device will be seriously tilted, and the light color-levelness converter will automatically calculate the tilt angle direction and display it , And an alarm signal is issued at the same time.
[0040] What is not mentioned in the present invention is applicable to the prior art.
[0041] It should be emphasized that the embodiments described in the present invention are illustrative rather than restrictive. Therefore, the present invention includes but is not limited to the embodiments described in the specific implementation manners. Anyone skilled in the art is based on the technology of the present invention. Other implementations derived from the solution also fall within the protection scope of the present invention.
