DC transformer calibration lifting device
By designing a segmented power unit driven by an angle sensor and a control system on the DC transformer verification device, segmented control of speed during the equipment flip is realized, solving the impact force problem during the equipment flip in the prior art, and improving the Equipment safety and transportation efficiency.
Patent Information
- Application Number
- CN202110168005.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2021-02-07
- Publication Date
- 2024-12-24
- Estimated Expiration
- 2041-02-07
AI Technical Summary
The existing devices used for the verification equipment for the boost voltage DC transformer cannot effectively reduce the impact force when the equipment is flipped, and the equipment shell is a non-metallic material and cannot withstand excessive loads, resulting in the equipment being transported and tested. Vulnerable to damage.
A DC transformer verification lifting device is designed, using angle sensors to detect the angle between the axis and the horizontal direction of the equipment, and the speed is controlled in segments through the control system and power unit, and the equipment is flipped through the hydraulic cylinder and hydraulic station drive, and it is segmented. Provide power to reduce impact and avoid damage to the equipment.
The lifting device that controls the speed in segments can reduce impact during the flip process, avoid equipment damage, and improve transportation and testing efficiency and safety.
Smart Images
Figure CN112797287B_ABST
Abstract
Description
Technical Field
[0001] The invention belongs to the field of test devices, and in particular relates to a device used for Jusheng DC transformer calibration equipment. Background Art
[0002] In the UHV DC field test, the various equipment used are generally large and heavy, and require crane assistance. The on-site workers have high labor intensity and low efficiency. High-voltage DC transformer calibration equipment is generally high, and for ease of transportation, it is usually inverted. After the equipment arrives at the test site, it is lifted upright by hydraulic mechanisms, and then laid down after the test is completed.
[0003] Transformer calibration equipment is generally quite precise and needs to be protected from excessive impact. In addition, the equipment housing is generally made of non-metallic materials and cannot withstand excessive loads. However, existing devices for lifting transformer calibration equipment cannot achieve the function of preventing overshoot. Summary of the invention
[0004] The object of the present invention is to provide a DC transformer calibration lifting device which can lift a DC transformer calibration device by controlling the speed in sections, thereby making the DC transformer calibration device turn over smoothly and reducing the impact force received.
[0005] In order to achieve the above object, the technical solution adopted by the present invention is:
[0006] A DC transformer calibration lifting device is used to rotate an inverted DC transformer calibration device around a rotating shaft at its bottom end and lift the top end, thereby erecting the DC transformer calibration device. The DC transformer calibration lifting device includes an angle sensor for detecting the angle between the axis of the DC transformer calibration device and the horizontal direction and outputting a corresponding angle detection signal, a control system, a speed regulating valve controlled by the control system to be energized or de-energized based on the angle detection signal, an output unit for driving the DC transformer calibration device to rotate and lift, a power unit for providing the output unit with power of different speeds in sections based on the energization or de-energization of the speed regulating valve, and an electromagnetic valve controlled by the control system to be energized or de-energized based on the state of the power unit. The control system is respectively connected to the angle sensor, the speed regulating valve, the electromagnetic valve, and the power unit, and the electromagnetic valve is connected to the output unit.
[0007] The power unit includes a hydraulic station, and the output unit includes a hydraulic cylinder.
[0008] The range of the angle between the axis of the DC transformer calibration device and the horizontal direction [0°, 90°] is divided into three intervals of [0°, a°], (a°, b°), and [b°, 90°], a<b, when the angle between the axis of the DC transformer calibration device and the horizontal direction is in the interval [0°, a°], the power unit provides the output unit with power at a speed of A, when the angle between the axis of the DC transformer calibration device and the horizontal direction is in the interval (a°, b°), the power unit provides the output unit with power at a speed of B, when the angle between the axis of the DC transformer calibration device and the horizontal direction is in the interval [b°, 90°], the power unit provides the output unit with power at a speed of C, B>A, B>C.
[0009] a=5,b=81.
[0010] The angle sensor is arranged at the bottom end of the DC transformer calibration device.
[0011] Due to the application of the above technical solution, the present invention has the following advantages compared with the prior art: the present invention can reduce the impact force of the DC transformer calibration equipment during the flipping process by controlling the speed, thereby avoiding damage to the DC transformer calibration equipment during the jacking process. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Attached Figure 1 It is a schematic diagram of the DC transformer calibration lifting device of the present invention.
[0013] In the above figures: 1. Power unit; 2. Angle sensor; 3. Solenoid valve; 4. Speed regulating valve; 5. Output unit; 6. Platform; 7. Turning mechanism; 8. DC transformer calibration equipment. DETAILED DESCRIPTION
[0014] The present invention will be further described below in conjunction with the embodiments shown in the accompanying drawings.
[0015] Embodiment 1: As shown in the attached Figure 1 As shown, a DC transformer calibration lifting device is used to rotate an inverted DC transformer calibration device 8 around a rotating shaft at its bottom end and lift the top end (i.e., flip) so as to erect the DC transformer calibration device 8, comprising an angle sensor 2, a control system, a speed regulating valve 4, an output unit 5, a power unit 1 and a solenoid valve 3. The control system is respectively connected to the angle sensor 2, the speed regulating valve 4, the solenoid valve 3 and the power unit 1, and the solenoid valve 3 is connected to the output unit 5.
[0016] The angle sensor 2 is arranged at the bottom end of the DC transformer calibration device 8, and is used to detect the angle between the axis of the DC transformer calibration device 8 and the horizontal direction and output the corresponding angle detection signal to the control system. The control system controls the power on or off of the speed regulating valve 4 based on the angle detection signal. The output unit 5 is used to drive the DC transformer calibration device 8 to rotate and lift, and the power unit 1 provides different speed power to the output unit 5 in sections based on the power on or off of the speed regulating valve 4. The solenoid valve 3 is controlled by the control system to be powered on or off based on the state of the power unit 1. The power unit 1 includes a hydraulic station, and the output unit 5 includes a hydraulic cylinder.
[0017] The range of the angle between the axis of the DC transformer calibration device 8 and the horizontal direction [0°, 90°] is divided into three intervals of [0°, a°], (a°, b°), and [b°, 90°], a<b, and the second interval generally has a larger span. When the angle between the axis of the DC transformer calibration device 8 and the horizontal direction is in the interval [0°, a°], the power unit 1 provides the output unit 5 with power at a speed of A, when the angle between the axis of the DC transformer calibration device 8 and the horizontal direction is in the interval (a°, b°), the power unit 1 provides the output unit 5 with power at a speed of B, when the angle between the axis of the DC transformer calibration device 8 and the horizontal direction is in the interval [b°, 90°], the power unit 1 provides the output unit 5 with power at a speed of C, B>A, B>C. In this embodiment, a=5, b=81, and A=C. The angle value can be calculated only as an integer.
[0018] In the above scheme, a platform 6 can be set, and a flipping mechanism 7 that can be flipped can be set on the platform 6, and the DC transformer calibration device 8 can be set on the flipping mechanism 7, so that the power unit 1 and the drive unit drive the flipping of the flipping mechanism 7 to drive the DC transformer calibration device 8 to flip.
[0019] The hydraulic station starts, and the solenoid valve 3 is energized through the control system. The angle sensor 2 feeds back the angle of the DC transformer calibration device 8. If the angle is 0°~5°, the speed control valve 4 is energized. Through the regulating effect of the speed control valve 4, the output speed of the power unit 1 is reduced, and then the flipping speed of the DC transformer calibration device 8 is reduced. When the angle sensor 2 feeds back an angle value of 6°~80°, the speed control valve 4 loses power, the output speed of the power unit 1 is increased, and rapid flipping can be achieved. When the angle sensor 2 feeds back an angle value of 81°~90°, the speed control valve 4 is energized again. Through the regulating effect of the speed control valve 4, the output speed of the power unit 1 is reduced, and the flipping speed of the equipment is reduced.
[0020] In the above process, the speed regulating valve 4 is used to adjust the turning speed of the equipment near the starting and end points, and to increase the speed in the middle of the turning. This can ensure that there is no excessive impact force during the turning process of the equipment, and can also reduce the turning time and improve the on-site work efficiency.
[0021] The above embodiments are only for illustrating the technical concept and features of the present invention, and their purpose is to enable people familiar with the technology to understand the content of the present invention and implement it accordingly, and they cannot be used to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be included in the protection scope of the present invention.
Claims
1. A DC transformer calibration lifting device, used to rotate an inverted DC transformer calibration device around a rotating shaft at its bottom end and lift the top end, so as to erect the DC transformer calibration device, characterized in that: The DC transformer calibration lifting device includes an angle sensor for detecting the angle between the axis of the DC transformer calibration device and the horizontal direction and outputting a corresponding angle detection signal, a control system, a speed regulating valve controlled by the control system to be energized or de-energized based on the angle detection signal, an output unit for driving the DC transformer calibration device to rotate and lift, a power unit for providing the output unit with power of different speeds in sections based on the energization or de-energization of the speed regulating valve, and an electromagnetic valve controlled by the control system to be energized or de-energized based on the state of the power unit, wherein the control system is respectively connected to the angle sensor, the speed regulating valve, the electromagnetic valve, and the power unit, and the electromagnetic valve is connected to the output unit; The range of the angle between the axis of the DC transformer calibration device and the horizontal direction [0°, 90°] is divided into three intervals of [0°, a°], (a°, b°), and [b°, 90°], a<b, when the angle between the axis of the DC transformer calibration device and the horizontal direction is in the interval [0°, a°], the power unit provides the output unit with power at a speed of A, when the angle between the axis of the DC transformer calibration device and the horizontal direction is in the interval (a°, b°), the power unit provides the output unit with power at a speed of B, when the angle between the axis of the DC transformer calibration device and the horizontal direction is in the interval [b°, 90°], the power unit provides the output unit with power at a speed of C, B>A, B>C, A=C.
2. The DC transformer calibration lifting device according to claim 1 is characterized in that: The power unit includes a hydraulic station, and the output unit includes a hydraulic cylinder.
3. The DC transformer calibration lifting device according to claim 1 is characterized in that: a=5,b=81.
4. The DC transformer calibration lifting device according to claim 1, characterized in that: The angle sensor is arranged at the bottom end of the DC transformer calibration device.