CN219892965U - Voltage stabilizing compensation control system for power supply of tower crane - Google Patents
Voltage stabilizing compensation control system for power supply of tower crane Download PDFInfo
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- CN219892965U CN219892965U CN202321011424.9U CN202321011424U CN219892965U CN 219892965 U CN219892965 U CN 219892965U CN 202321011424 U CN202321011424 U CN 202321011424U CN 219892965 U CN219892965 U CN 219892965U
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- power supply
- voltage stabilizing
- control loop
- stabilizing device
- voltage
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- 230000000087 stabilizing effect Effects 0.000 title claims abstract description 37
- 238000000819 phase cycle Methods 0.000 claims description 10
- 238000012544 monitoring process Methods 0.000 claims description 3
- 238000009434 installation Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
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Abstract
The utility model discloses a power supply voltage stabilizing compensation control system of a tower crane, which comprises a control loop, a power supply for supplying power and a PLC (programmable logic controller), wherein a voltage stabilizing device is arranged between the control loop and the power supply, the voltage stabilizing device is electrically connected with the control loop, and the PLC is respectively electrically connected with the voltage stabilizing device and the control loop. The utility model improves the adaptability of the power supply system of the tower crane and ensures that the tower crane can work stably.
Description
Technical Field
The utility model belongs to the technical field of tower cranes, and relates to a power supply voltage stabilizing compensation control system of a tower crane.
Background
The tower crane is generally powered by adopting a three-phase five-wire system of 380V/50Hz, and the fluctuation range of the power supply at the upper part of the tower crane is within 380 V+/-10 percent according to the requirements of relevant national standards, but in the practical application situation, the voltage drop at the top of the tower crane is larger because the height of the tower crane is higher (generally more than 100 meters) and the power supply cable is longer; and the power supply fluctuation of the control system of the tower crane is larger because the fluctuation of the power supply of the construction site is larger.
When the tower crane exceeds a certain height, the sectional area of the power supply cable is required to be increased so as to reduce the resistance and the voltage drop loss, but the sectional area of the main cable is large, so that the cost is increased, the laying is difficult, and the installation efficiency is affected.
Disclosure of Invention
The utility model aims to overcome the defects in the prior art, and provides a power supply voltage stabilizing compensation control system for a tower crane, which improves the adaptability of a power supply system of the tower crane and ensures that the tower crane can stably work.
In order to achieve the above purpose, the utility model is realized by adopting the following technical scheme:
the utility model provides a tower power supply steady voltage compensation control system, includes control loop, is used for power supply's power and PLC controller, control loop with be equipped with voltage regulator between the power, voltage regulator with control loop electric connection, the PLC controller respectively with voltage regulator with control loop electric connection.
Optionally, a voltmeter for monitoring the voltage of the power grid is arranged between the voltage stabilizing device and the control loop, and the voltmeter is respectively and electrically connected with the voltage stabilizing device and the control loop.
Optionally, a protection circuit breaker for short-circuit and overload protection of the electric equipment is arranged between the voltmeter and the voltage stabilizing device, and the protection circuit breaker is respectively and electrically connected with the voltage stabilizing device and the voltmeter.
Optionally, a phase sequence relay for detecting a power supply phase sequence is arranged between the voltmeter and the control loop, and two ends of the phase sequence relay are respectively and electrically connected with the voltmeter and the control loop.
Optionally, a display is disposed on the PLC controller, and the display is electrically connected with the PLC controller.
Alternatively, the power supply is supplied by three-phase five-wire system 380V/50 Hz.
Optionally, the voltage of the voltage stabilizing device is set to 380v±10%.
Compared with the prior art, the utility model has the beneficial effects that:
the utility model provides a tower crane power supply voltage stabilizing compensation control system, which is used for detecting the quality of a power supply, regulating the voltage to be within an allowable range, stabilizing the power supply voltage, stabilizing and reliable operation of an electric control system, ensuring safe mechanism action and prolonging the service life of components;
the PLC is used for receiving the information such as voltage, current, frequency, current power load and the like sent by the voltage stabilizing device and controlling the control loop;
when the tower crane is too high, the pressure drop problem caused by the overlong cable can be avoided, so that the sectional area of the cable is not required to be enlarged, the cost is saved, and the cable is convenient to lay and fix.
Drawings
Fig. 1 is a schematic diagram of an embodiment of the present utility model.
Detailed Description
The utility model is further described below with reference to the accompanying drawings. The following examples are only for more clearly illustrating the technical aspects of the present utility model, and are not intended to limit the scope of the present utility model.
In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second", etc. may explicitly or implicitly include one or more such feature. In the description of the present utility model, unless otherwise indicated, the meaning of "a plurality" is two or more.
In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art in a specific case.
As shown in fig. 1, the power supply voltage stabilizing compensation control system of the tower crane comprises a control loop, a power supply for supplying power and a PLC controller, wherein a voltage stabilizing device is arranged between the control loop and the power supply, the voltage stabilizing device is electrically connected with the control loop, the PLC controller is electrically connected with the voltage stabilizing device and the control loop respectively, the voltage of the voltage stabilizing device is set to be 380 V+/-10%, and the power supply adopts a three-phase five-wire system for 380V/50Hz power supply; the voltage stabilizing device is used for detecting the quality of the power supply, and if the voltage is higher than or lower than a set value, the voltage can be regulated to be within an allowable range; the PLC controller can receive the information of voltage, current, frequency, current power load and the like sent by the voltage stabilizing device.
And a voltmeter for monitoring the voltage of the power grid is arranged between the voltage stabilizing device and the control loop, and the voltmeter is respectively and electrically connected with the voltage stabilizing device and the control loop.
The protection circuit breaker for short circuit and overload protection of electric equipment is arranged between the voltmeter and the voltage stabilizing device, and the protection circuit breaker is respectively and electrically connected with the voltage stabilizing device and the voltmeter.
A phase sequence relay for detecting the phase sequence of the power supply is arranged between the voltmeter and the control loop, and two ends of the phase sequence relay are respectively and electrically connected with the voltmeter and the control loop.
The PLC is provided with a display, and the display is electrically connected with the PLC; the display can display information such as voltage, current, frequency, current power load and the like.
When the voltage regulation device is applied, the voltage regulation device is added for installation, and the voltage, the frequency, the phase sequence and the like of the power grid are detected through the voltage regulation device, and when the voltage of the input end exceeds the allowable range or the voltage fluctuation is large, the voltage regulation and the voltage regulation control are automatically carried out, so that the voltage of the output end is ensured to meet the use requirement; when the voltage fluctuation is too large and exceeds the adjustable range, the system automatically alarms through the display, and the system power supply is cut off through the protection breaker, so that the safety of the tower crane is ensured.
The foregoing is merely a preferred embodiment of the present utility model, and it should be noted that modifications and variations could be made by those skilled in the art without departing from the technical principles of the present utility model, and such modifications and variations should also be regarded as being within the scope of the utility model.
Claims (7)
1. A power supply voltage stabilizing compensation control system of a tower crane is characterized in that: the power supply comprises a control loop, a power supply for supplying power and a PLC controller, wherein a voltage stabilizing device is arranged between the control loop and the power supply, the voltage stabilizing device is electrically connected with the control loop, and the PLC controller is electrically connected with the voltage stabilizing device and the control loop respectively.
2. The tower power supply voltage regulation and compensation control system of claim 1, wherein: and a voltmeter for monitoring the voltage of the power grid is arranged between the voltage stabilizing device and the control loop, and the voltmeter is respectively and electrically connected with the voltage stabilizing device and the control loop.
3. The tower power supply voltage regulation and compensation control system of claim 2, wherein: the protection circuit breaker for short circuit and overload protection of electric equipment is arranged between the voltmeter and the voltage stabilizing device, and the protection circuit breaker is respectively and electrically connected with the voltage stabilizing device and the voltmeter.
4. The tower power supply voltage regulation and compensation control system of claim 2, wherein: a phase sequence relay for detecting the phase sequence of the power supply is arranged between the voltmeter and the control loop, and two ends of the phase sequence relay are respectively and electrically connected with the voltmeter and the control loop.
5. The tower power supply voltage regulation and compensation control system of claim 1, wherein: the PLC is provided with a display, and the display is electrically connected with the PLC.
6. The tower power supply voltage regulation and compensation control system of claim 1, wherein: the power supply adopts a three-phase five-wire system 380V/50Hz to supply power.
7. The tower power supply voltage regulation and compensation control system of claim 1, wherein: the voltage of the voltage stabilizing device is set to be 380 V+/-10 percent.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2023207458034 | 2023-04-07 | ||
| CN202320745803 | 2023-04-07 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219892965U true CN219892965U (en) | 2023-10-24 |
Family
ID=88408764
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321011424.9U Active CN219892965U (en) | 2023-04-07 | 2023-04-28 | Voltage stabilizing compensation control system for power supply of tower crane |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219892965U (en) |
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2023
- 2023-04-28 CN CN202321011424.9U patent/CN219892965U/en active Active
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