CN111474081A - In-use insulator hydrophobicity detection device and parameter configuration method thereof - Google Patents
In-use insulator hydrophobicity detection device and parameter configuration method thereof Download PDFInfo
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Abstract
An in-use insulator hydrophobicity detection device and a parameter configuration method thereof belong to the field of insulator hydrophobicity detection. The device comprises a distance measuring module, a control module and a spraying module with adjustable spraying distance, wherein the spraying module with adjustable spraying distance comprises a direct-current spraying water gun with adjustable spraying angle, a spraying angle adjusting actuator and a constant-pressure flow-adjusting pumping assembly; the distance measuring module is used for measuring the spraying distance between a spraying port of the direct-current spraying water gun with an adjustable spraying angle and the hydrophobicity detection surface of the insulator, the input end of the control module is electrically connected with the distance measuring module in a corresponding mode, and the output end of the control module drives the spraying angle adjusting actuator and the constant-pressure flow adjusting pumping assembly through corresponding driving circuits respectively. The distance requirement for insulator hydrophobicity detection is loose.
Description
Technical Field
The invention relates to the technical field of insulator hydrophobicity detection, in particular to an insulator hydrophobicity detection device and a parameter configuration method thereof.
Background
The title guide for composite insulator use for AC overhead line with nominal voltage higher than 1000V, D L/T864-2004 appendix A, defines the measurement method and judgment criteria for hydrophobicity of insulator, and describes a water spray device for detecting hydrophobicity by water spray classification method.
Generally, the evaluation of the hydrophobic effect of the in-use insulator can guide the maintenance of the in-use insulator whose hydrophobic property does not meet the design requirement. For example, patent document CN205958027U discloses an insulator hydrophobicity online detection device based on the unmanned aerial vehicle technology, and specifically discloses an insulator hydrophobicity online detection device including an aerial detection part and a ground remote control part, where the space detection part includes a rotor unmanned aerial vehicle, the rotor unmanned aerial vehicle is provided with a carrying platform, a flight control system and an image acquisition device, the carrying platform is provided with a first control circuit, an automatic water spraying device, an auxiliary measurement device and a first wireless communication module, and the automatic water spraying device, the auxiliary measurement device and the first wireless communication module are all connected with the first control circuit; the ground remote control part comprises a liquid crystal display screen, a second control circuit, a second wireless communication module and a key, and the liquid crystal display screen, the second wireless communication module and the key are all connected with the second control circuit. This technical scheme carries insulator hydrophobicity on-line measuring device through unmanned aerial vehicle and realizes the water spray operation, but its water spray distance is unchangeable. In practical use, different voltages correspond to different electrical safety distances, so that the application range of the device is greatly limited.
Disclosure of Invention
The invention aims to provide an insulator hydrophobicity detection device and a parameter configuration method thereof, and aims to solve the technical problem that the existing insulator hydrophobicity detection device can only detect the hydrophobicity of an insulator at a detection distance between a preset spray nozzle and an insulator hydrophobicity detection surface.
In order to achieve the purpose of the invention, the following technical scheme can be selected according to the requirement:
an insulator hydrophobicity detection device for use comprises a distance measurement module, a control module and a spraying module with adjustable spraying distance, wherein the spraying module with adjustable spraying distance comprises a direct-current spraying water gun with adjustable spraying angle, a spraying angle adjusting actuator and a constant-pressure flow-adjusting pumping assembly, the spraying angle adjusting actuator is used for adjusting the spraying angle of the direct-current spraying water gun with adjustable spraying angle, and a water outlet of the constant-pressure flow-adjusting pumping assembly is communicated with a water inlet pipeline of the direct-current spraying water gun with adjustable spraying angle; the distance measuring module is used for measuring the spraying distance between a spraying port of the direct-current spraying water gun with the adjustable spraying angle and the hydrophobicity detection surface of the insulator, the input end of the control module is electrically connected with the distance measuring module in a corresponding mode, and the output end of the control module drives the spraying angle adjusting actuator and the constant-voltage flow-adjusting pumping assembly through corresponding driving circuits respectively.
Preferably, the constant pressure flow-regulating pumping assembly comprises a variable displacement pump.
Furthermore, the constant-pressure flow-regulating pumping assembly further comprises a pressure reducing valve, and the pressure reducing valve is used for keeping the pressure of a water inlet of the direct-current spraying water gun with the adjustable spraying angle stable.
Preferably, the direct current spray water gun with the adjustable spray angle selects a low-pressure direct current spray water gun with the adjustable spray angle, which has the functions of keeping the spray pressure unchanged and changing the flow along with the change of the spray angle.
Preferably, the device for detecting hydrophobicity of the in-use insulator further comprises an input module, and the input module is in wireless communication connection with the control module.
Preferably, the device for detecting hydrophobicity of the insulator further comprises an electrical safety feedback module for setting an alarm distance, the electrical safety feedback module is electrically connected with the input end of the control module, and the alarm distance is greater than the electrical safety distance.
Further, the electrical safety feedback module comprises at least one of a mutual inductor, a mutual capacitance and a magnetic field strength sensor.
The parameter configuration method of the insulator hydrophobicity detection device comprises the following steps:
step 1, measuring a spraying distance L between a spraying port of a direct-current spraying water gun with an adjustable spraying angle and an insulator hydrophobicity detection surface by using a distance measuring module;
step 2, adjusting a spray angle α of the direct-current spray water gun with the adjustable spray angle by using a spray angle adjusting actuator to enable the spray angle α to meet the requirement
Wherein α is a spray angle, R is a diameter of a wet spot sprayed on the hydrophobic detection surface by mist water flow, and L is a spray distance;
Q＝kd2+b
Wherein Q is the output flow; d is the diameter of the spray opening of the direct current spray water gun with the adjustable spray angle; k is a constant and b is a constant; t is the primary pumping output duration of the constant-pressure flow-regulating pumping assembly; v is the primary water spraying volume.
In an insulator hydrophobicity detection test, a piece of newspaper is erected at a position 25cm away from a nozzle of the water spraying device, the spraying direction is perpendicular to the newspaper, water is sprayed for 10-15 times, the water spraying frequency of one time per second is kept, the water spraying amount is 0.7-1 ml each time, the spraying angle is 50-70 degrees, and the water spraying device with the formed wet spot diameter being 25-35cm is suitable.
① for the atomizing nozzle, when the spray pressure changes, the atomizing fineness of the atomizing water flow can also change correspondingly, thereby affecting the consistency of the insulator hydrophobicity detection test, ② is equivalent to enlarging the diameter of the water outlet after enlarging the atomizing angle of the direct current spray water gun with the adjustable atomizing angle, and is equivalent to enlarging the pipeline flow of the direct current spray water gun with the adjustable atomizing angle and improving the pumping power of the variable pump in order to maintain the stability of the liquid flow pressure, and is equivalent to reducing the diameter of the water outlet after reducing the atomizing angle of the direct current spray water gun with the adjustable atomizing angle, and is equivalent to reducing the pipeline flow of the direct current spray water gun with the adjustable atomizing angle and reducing the pumping power of the variable pump in order to maintain the stability of the liquid flow pressure.
Compared with the prior art, the invention has the beneficial effects that:
1. the insulator hydrophobicity detection device can be used for detecting the hydrophobicity of insulators on towers, and particularly, according to the spraying distance between a spraying port of a direct-current spraying water gun with an adjustable spraying angle and an insulator hydrophobicity detection surface measured by a distance measurement module, a control module adjusts the spraying angle of the direct-current spraying water gun with the adjustable spraying angle by driving a spraying angle adjusting actuator, and adjusts the output flow of a constant-pressure flow-adjusting pumping assembly on the basis of maintaining the stable pressure of a water inlet of the direct-current spraying water gun with the adjustable spraying angle by driving a constant-pressure flow-adjusting pumping assembly, so that the wet spot area, the atomizing fineness and the atomizing density of atomized water flow at the insulator hydrophobicity detection surface meet the consistency requirement of insulator hydrophobicity detection. By adopting the structure, the distance requirement for the hydrophobicity detection of the insulator is looser.
2. The input module is in wireless communication connection with the control module, so that an operator can conveniently control the starting time of the hydrophobicity detection.
3. The electric safety feedback module can remind an operator when the insulator hydrophobicity detection device is located in a dangerous area, so that the operator can operate the insulator hydrophobicity detection device to enter the safe area, and the safety is good.
4. The parameter configuration method of the insulator hydrophobicity detection device is convenient for configuring the spray angle and the output flow of the constant-pressure flow-regulating pumping assembly according to the spray distance, can be stored in a computer readable medium as an insulator hydrophobicity detection program, and is operated by the control module, so that the water spraying process of the insulator hydrophobicity detection process can be conveniently completed.
Drawings
Fig. 1 is a schematic structural view of an apparatus for detecting hydrophobicity of an insulator in use according to the present invention.
The reference numbers show that 1-water tank, 2-constant pressure flow-regulating pumping component, 3-direct current spray water gun with adjustable spray angle, 31-spray angle regulating actuator, 4-distance measuring device, L1-closest spray distance and L2-farthest spray distance.
Detailed Description
The present invention is described below in terms of embodiments in conjunction with the accompanying drawings to assist those skilled in the art in understanding and implementing the present invention. Unless otherwise indicated, the following embodiments and technical terms therein should not be understood to depart from the background of the technical knowledge in the technical field.
First part of the invention
A spray module with adjustable spray distance, see fig. 1, comprises a direct-current spray water gun 3 with adjustable spray angle, a spray angle adjusting actuator 31 and a constant-pressure flow-adjusting pumping assembly 2. The water outlet of the constant-pressure flow-regulating pumping assembly 2 is communicated with the water inlet pipeline of the direct-current spray water gun 3 with an adjustable spray angle, and the spray angle adjusting actuator 31 is used for adjusting the spray angle of the direct-current spray water gun 3 with the adjustable spray angle. The dc spray gun 3 with adjustable spray angle further comprises an input module (not shown) according to the requirement.
Wherein, the spray angle adjustable direct current spray squirt 3 can adjust the spray angle of atomizing rivers. The direct current spray water gun with the adjustable spray angle can select a low-pressure direct current spray water gun with the adjustable spray angle, which has the functions of keeping the spray pressure unchanged and changing the flow along with the change of the spray angle.
The constant-pressure flow-regulating pumping assembly 2 can regulate output flow and maintain the output pressure of an output port of the constant-pressure flow-regulating pumping assembly to be constant. The main purpose is to make the passing flow of the DC spray water gun 3 with the adjustable spray angle and the spray diameter of the DC spray water gun 3 with the adjustable spray angle present the following relationship according to the spray diameter of the DC spray water gun 3 with the adjustable spray angle on the basis of maintaining the fluid pressure at the spray opening of the DC spray water gun 3 with the adjustable spray angle constant
Q＝kd2+b
In the formula, Q is the output flow of the constant-pressure flow-regulating pumping assembly, d is the diameter of a spray opening of the direct-current spray water gun with the adjustable spray angle, k is a constant, and b is a constant; wherein the constants k, b can be obtained by experiment.
Preferably, the constant-pressure flow-regulating pumping assembly 2 may include a variable pump, which is a delivery pump capable of regulating an output flow rate, to be distinguished from a delivery pump incapable of regulating an output flow rate.
Preferably, the constant pressure flow-regulating pumping assembly 2 may include a pressure reducing valve (not shown) for stabilizing a pressure at the water inlet of the direct current spray gun 3 with an adjustable spray angle. However, when the pressure reducing valve is added and the pressure reducing valve is activated, liquid flows out of the branch, and therefore the metering accuracy of the output flow of the variable displacement pump is affected. For this purpose, the constant-pressure flow-regulating pumping assembly 2 may include a delivery pump, a pressure reducing valve, a flow regulating valve and a flow meter, wherein an output port of the delivery pump is in pipeline communication with a high-pressure input port of the pressure reducing valve; the pressure stabilizing output port of the pressure reducing valve is communicated with the input port pipeline of the flow regulating valve; the output port of the flow control valve is communicated with the water inlet pipeline of the direct current spray water gun 3 with the adjustable spray angle, and the flow meter is arranged on the pipeline between the flow control valve and the direct current spray water gun 3 with the adjustable spray angle. The branch port of the pressure reducing valve is communicated with the water tank or is led out through a proper water outlet.
If the spraying module with the adjustable spraying distance further comprises an input module, the input module is coupled with the spraying angle adjusting actuator 31 to drive the spraying angle adjusting actuator 31 to adjust the spraying angle of the direct-current spraying water gun with the adjustable spraying angle. Spray angle adjustment executor 31 can include first the control unit, the step motor driver, closed loop step motor and first wireless communication module, first the control unit corresponds the electricity with the step motor driver and is connected, the step motor driver corresponds the electricity with closed loop step motor and is connected, first the control unit corresponds the electricity with first wireless communication unit and is connected, closed loop step motor adopts pole-penetrating type closed loop step motor, the epaxial key fixedly connected with worm wheel of spray angle adjustable direct current spraying squirt's spray angle regulation pivot, the worm wheel forms worm gear mechanism with pole-penetrating type closed loop step motor's screw rod cooperation. The organism of wearing rod-type closed loop step motor can with the wall body fixed connection of spray angle adjustable direct current spraying squirt, wear rod-type closed loop step motor's pole of wearing when rotating, drive worm wheel and spray angle regulation pivot to adjust the spray angle of spray angle adjustable direct current spraying squirt. The input module comprises a second control unit, a second wireless communication unit and an input unit, wherein the second control unit is respectively and correspondingly electrically connected with the second wireless communication unit and the input unit. The second wireless communication unit is in wireless communication connection with the first wireless communication unit. The first control unit and the second control unit can adopt single-chip microcomputers.
The application of the spraying module with the adjustable spraying distance in the hydrophobicity detection of the insulator comprises the following steps:
adjusting the spray angle of the direct-current spray water gun with the adjustable spray angle according to the spray distance L so that the diameter of a wet spot of a fog-like water column sprayed from the direct-current spray water gun with the adjustable spray angle and falling on the detection surface of the insulator meets the requirement of hydrophobicity detection, wherein the calculation formula of the set spray angle α is as follows
Wherein α is a spray angle, R is a diameter of a wet spot sprayed on the hydrophobic detection surface by mist water flow, and L is a spray distance;
adjusting the output flow of the constant-pressure flow-regulating pumping assembly so that the atomization density of the atomized water flow sprayed from the spray opening of the direct-current spray water gun with the adjustable spray angle meets the hydrophobicity detection requirement; on the basis of maintaining the fluid pressure at the spray opening of the direct-current spray water gun 3 with the adjustable spray angle to be constant, according to the diameter of the spray opening of the direct-current spray water gun 3 with the adjustable spray angle, the output flow Q of the constant-pressure flow-adjusting pumping assembly and the diameter of the spray opening of the direct-current spray water gun 3 with the adjustable spray angle are in the following relation, so that the atomization fineness and the atomization density of atomized water flow sprayed from the spray opening of the direct-current spray water gun with the adjustable spray angle can meet the hydrophobic detection requirement
Q＝kd2+b
In the formula, Q is the output flow of the constant-pressure flow-regulating pumping assembly, d is the diameter of a spray opening of the direct-current spray water gun with an adjustable spray angle, k is a constant, and b is a constant;
when the water volume sprayed by the direct current spray water gun with the adjustable spray angle reaches the hydrophobicity detection water volume, the variable pump is closed or the water flow on the water inlet side of the direct current spray water gun with the adjustable spray angle is cut off. Generally, under the condition that the output flow Q of the constant-pressure flow-regulating pumping assembly is stable, the water volume sprayed by the direct-current spray water gun with the adjustable spray angle after the output time t of the constant-pressure flow-regulating pumping assembly reaches the hydrophobicity detection water volume. The calculation formula of the one-time output time t of the constant-pressure flow-regulating pumping assembly is
In the formula, t is the primary output duration of the constant-pressure flow-regulating pumping assembly, V is the primary water spraying volume, and Q is the output flow of the constant-pressure flow-regulating pumping assembly.
In an insulator hydrophobicity detection test, the time length of one-time output refers to the time length of the liquid continuously flowing out from the output port of the constant-pressure flow-regulating pumping assembly when the water volume V is sprayed once.
In the art, the following relationships exist for the motor power of the delivery pump, pump outlet pressure and flow rate
In the formula, W is the motor power, P is the pump outlet pressure, Q is the output flow, and mu is the motor efficiency.
That is, the pump outlet pressure can be maintained stable by changing the motor power and the output flow in proportion.
According to the invention, the spray angle of the direct-current spray water gun with the adjustable spray angle is adjusted according to the spray distance, so that the cross section area of the atomized water flow at the spray target surface can be set; the output flow of the constant-pressure flow-regulating pumping assembly is adjusted according to the spray angle of the direct-current spray water gun with the adjustable spray angle under the condition that the fluid pressure of the spray angle of the direct-current spray water gun with the adjustable spray angle is kept stable through the constant-pressure flow-regulating pumping assembly, and the consistency of the atomization fineness and the atomization density of the atomized water flow at the spray target surface can be kept. The hydrophobicity of the insulator arranged on the tower can be detected;
the input module is matched with the spray angle adjusting actuator, and the cross section area of the atomized water flow at the spray target surface is reduced conveniently by means of the human-computer interaction interface of the input module and the repeated reproducibility of the spray angle adjusting actuator, and the systematic error and the accidental error of the consistency process of the atomization fineness and the atomization density of the atomized water flow at the spray target surface are maintained.
The low-pressure direct-current spray water gun with the adjustable spray angle and the functions of keeping the spray pressure unchanged and changing the flow along with the change of the spray angle is matched with the constant-pressure flow-adjusting pumping assembly and the direct-current spray water gun with the adjustable spray angle, so that the consistency of the atomization fineness and the atomization density of atomized water flow at a spray target surface can be maintained conveniently.
The invention discloses an acquisition method of a spray angle, the output flow of a constant-pressure flow-regulating pumping assembly and the primary output duration of the constant-pressure flow-regulating pumping assembly in the process of applying a spray module with adjustable spray distance in an insulator hydrophobicity detection test, and is beneficial to a user to adjust the spray angle, the output flow of the constant-pressure flow-regulating pumping assembly and the primary output duration of the constant-pressure flow-regulating pumping assembly according to the spray distance.
Second part of the invention
An in-use insulator hydrophobicity detection device comprises a distance measurement module 4, a control module and a spraying module with adjustable spraying distance.
The spraying module with the adjustable spraying distance comprises a direct-current spraying water gun 3 with an adjustable spraying angle, a spraying angle adjusting actuator 31 and a constant-pressure flow-adjusting pumping assembly 2. The spray angle adjusting actuator 31 is used for adjusting the spray angle of the direct-current spray water gun 3 with the adjustable spray angle, and the water outlet of the constant-pressure flow-adjusting pumping assembly 2 is communicated with the water inlet pipeline of the direct-current spray water gun 3 with the adjustable spray angle.
Preferably, the spray angle adjusting actuator 31 may include a first control unit, a stepping motor driver, a closed-loop stepping motor and a first wireless communication module, the first control unit corresponds to the electric connection with the stepping motor driver, the stepping motor driver corresponds to the electric connection with the closed-loop stepping motor, the first control unit corresponds to the electric connection with the first wireless communication unit, the closed-loop stepping motor adopts a penetrating rod type closed-loop stepping motor, a worm wheel is fixedly connected to a spray angle adjusting rotating shaft key of the spray angle adjustable direct current spray water gun, and the worm wheel and a screw rod of the penetrating rod type closed-loop stepping motor are matched to form a worm gear mechanism. The organism of wearing rod-type closed loop step motor can with the wall body fixed connection of spray angle adjustable direct current spraying squirt, wear rod-type closed loop step motor's pole of wearing when rotating, drive worm wheel and spray angle regulation pivot to adjust the spray angle of spray angle adjustable direct current spraying squirt.
Wherein, ranging module 4 is used for measuring the spray distance of the nozzle of the adjustable direct current spray squirt of spray angle 3 and insulator hydrophobicity detection face, and control module's input corresponds the electricity with ranging module and is connected, and control module adjusts the actuating ware through the drive circuit drive spray angle with spray angle adjustment actuating ware adaptation, and control module is through the drive circuit drive constant voltage transfer pump sending subassembly with constant voltage transfer pump sending subassembly adaptation.
Preferably, the constant-pressure flow-regulating pumping assembly may include a variable pump, which is a delivery pump capable of regulating an output flow rate, to be distinguished from a delivery pump incapable of regulating an output flow rate.
Preferably, the constant pressure flow-regulating pumping assembly 2 may include a pressure reducing valve for stabilizing a pressure at a water inlet of the dc spray gun 3 whose spray angle is adjustable.
Preferably, the constant pressure flow-regulating pumping assembly may further include a pressure reducing valve (not shown) for stabilizing a pressure at the water inlet of the direct current spray water gun with an adjustable spray angle. However, when the pressure reducing valve is added and the pressure reducing valve is activated, liquid flows out of the branch, and therefore the metering accuracy of the output flow of the variable displacement pump is affected. For this purpose, the constant-pressure flow-regulating pumping assembly 2 may include a delivery pump, a pressure reducing valve, a flow regulating valve and a flow meter, wherein an output port of the delivery pump is in pipeline communication with a high-pressure input port of the pressure reducing valve; the pressure stabilizing output port of the pressure reducing valve is communicated with the input port pipeline of the flow regulating valve; the output port of the flow control valve is communicated with the water inlet pipeline of the direct current spray water gun 3 with the adjustable spray angle, and the flow meter is arranged on the pipeline between the flow control valve and the direct current spray water gun 3 with the adjustable spray angle. The branch port of the pressure reducing valve is communicated with the water tank or is led out through a proper water outlet.
Preferably, the direct current spray water gun with the adjustable spray angle selects a low-pressure direct current spray water gun with the adjustable spray angle, which has the functions of keeping the spray pressure unchanged and changing the flow along with the change of the spray angle.
Preferably, the device for detecting hydrophobicity of the in-use insulator further comprises an input module, the input module comprises a second control unit, a second wireless communication unit and an input unit, and the second control unit is electrically connected with the second wireless communication unit and the input unit correspondingly. The second wireless communication unit is in wireless communication connection with the first wireless communication unit. The first control unit and the second control unit can adopt single-chip microcomputers.
Preferably, the device for detecting hydrophobicity of the insulator further comprises an electrical safety feedback module for setting an alarm distance, the electrical safety feedback module is electrically connected with the input end of the control module, and the specification of the electrical safety feedback module is satisfied: the alarm distance is greater than the electrical safety distance. Wherein, the electric safety feedback module can select at least one of a mutual inductor, a mutual inductance capacitor or a magnetic field intensity sensor.
The parameter configuration method of the insulator hydrophobicity detection device comprises the following steps:
step 1, measuring a spraying distance L between a spraying port of a direct-current spraying water gun with an adjustable spraying angle and an insulator hydrophobicity detection surface by using a distance measuring module;
step 2, adjusting a spray angle α of the direct-current spray water gun with the adjustable spray angle by using a spray angle adjusting actuator to enable the spray angle α to meet the requirement
Wherein α is a spray angle, R is a diameter of a wet spot sprayed on the hydrophobic detection surface by mist water flow, and L is a spray distance;
Q＝kd2+b
Wherein Q is the output flow; d is the diameter of the spray opening of the direct current spray water gun with the adjustable spray angle; k is a constant and b is a constant; t is the primary pumping output duration of the constant-pressure flow-regulating pumping assembly; v is the primary water spraying volume.
The insulator hydrophobicity detection device can be used for detecting the hydrophobicity of insulators on towers, and particularly, according to the spraying distance between a spraying port of a direct-current spraying water gun with an adjustable spraying angle and an insulator hydrophobicity detection surface measured by a distance measurement module, a control module adjusts the spraying angle of the direct-current spraying water gun with the adjustable spraying angle by driving a spraying angle adjusting actuator, and adjusts the output flow of a constant-pressure flow-adjusting pumping assembly on the basis of maintaining the stable pressure of a water inlet of the direct-current spraying water gun with the adjustable spraying angle by driving a constant-pressure flow-adjusting pumping assembly, so that the wet spot area, the atomizing fineness and the atomizing density of atomized water flow at the insulator hydrophobicity detection surface meet the consistency requirement of insulator hydrophobicity detection. By adopting the structure, the distance requirement for the hydrophobicity detection of the insulator is looser.
The input module is in wireless communication connection with the control module, so that an operator can conveniently control the starting time of the hydrophobicity detection.
The electric safety feedback module can remind an operator when the insulator hydrophobicity detection device is located in a dangerous area, so that the operator can operate the insulator hydrophobicity detection device to enter the safe area, and the safety is good.
The parameter configuration method of the insulator hydrophobicity detection device is convenient for configuring the spray angle and the output flow of the constant-pressure flow-regulating pumping assembly according to the spray distance, can be stored in a computer readable medium as an insulator hydrophobicity detection program, and is operated by the control module, so that the water spraying process of the insulator hydrophobicity detection process can be conveniently completed.
Third part of the invention
A method for detecting hydrophobicity of insulator in windless or breezy environment to prevent airflow disturbance from influencing the form of mist water flow comprises the following steps:
step 1, measuring a spraying distance L between a spraying port of a direct current spraying water gun with an adjustable spraying angle and an insulator hydrophobicity detection surface;
preferably, in the step 1, the spraying distance L is not less than the maximum effective hydrophobicity detecting distance of the direct-current spraying water gun with the adjustable spraying angle and is greater than the electrical safety distance, so that safety accidents caused by the detection of the hydrophobicity of the insulator can be avoided.
Preferably, the direct current spray water gun with the adjustable spray angle selects a low-pressure direct current spray water gun with the adjustable spray angle, which has the functions of keeping the spray pressure unchanged and changing the flow along with the change of the spray angle.
Step 2, adjusting the spray angle α of the direct current spray water gun with the adjustable spray angle to enable the spray angle α to meet the requirement
In the formula, α denotes a spray angle, R denotes a diameter of a wet spot formed by spraying a water mist on the water repellency detection surface, and L denotes a spray distance.
Q＝kd2+b
In the formula, Q is the flow of a water inlet; d is the diameter of the spray opening of the direct current spray water gun with the adjustable spray angle; k is a constant and b is a constant; t is the input duration of one pumping; v is the primary water spraying volume;
and 4, performing an insulator hydrophobicity detection test according to the configuration in the step 3.
The spray angle α of the direct-current spray water gun with the adjustable spray angle in the step 2 and the step 3 is related to the water inlet flow Q of the direct-current spray water gun with the adjustable spray angle, and the spray angle α of the direct-current spray water gun with the adjustable spray angle and the water inlet flow Q of the direct-current spray water gun with the adjustable spray angle are set according to the relation
The insulator hydrophobicity detection device comprises a distance measurement module, a control module and a spraying module with adjustable spraying distance, wherein the spraying module with adjustable spraying distance comprises a direct current spraying water gun with an adjustable spraying angle, a spraying angle adjusting actuator and a constant-pressure flow adjusting pumping assembly, the spraying angle adjusting actuator is used for adjusting the spraying angle of the direct current spraying water gun with the adjustable spraying angle, the water outlet of the constant-pressure flow adjusting pumping assembly is communicated with the water inlet pipeline of the direct current spraying water gun with the adjustable spraying angle, the distance measurement module is used for measuring the spraying distance L between the spraying port of the direct current spraying water gun with the adjustable spraying angle and the insulator hydrophobicity detection surface, the input end of the control module is correspondingly and electrically connected with the distance measurement module, the output end of the control module respectively drives the spraying angle adjusting actuator and the constant-pressure flow adjusting pumping assembly through corresponding driving circuits, the spraying angle adjusting actuator can adjust the spraying angle α of the direct current spraying water gun with the adjustable spraying angle, and the fineness of atomized water flow sprayed from the spraying port of the direct current spraying water gun with the adjustable spraying angle can be adjusted through the constant-pressure flow adjusting pumping assembly.
Preferably, the constant pressure, flow regulated pumping assembly may comprise a variable displacement pump.
Preferably, the constant-pressure flow-regulating pumping assembly may further include a pressure reducing valve for stabilizing a pressure at a water inlet of the direct-current spray water gun with the adjustable spray angle.
Preferably, the device for detecting hydrophobicity of the insulator further comprises an input module, and the input module is in wireless communication connection with the control module.
Preferably, insulator hydrophobicity detection device is in use still includes the electrical safety feedback module who is used for setting for the warning distance, electrical safety feedback module with control module's input electricity is connected, warning distance > electrical safety distance the spraying distance that distance measuring module measured is less than or equal to the biggest effective hydrophobicity detection distance of spraying module of spray distance adjustable, just when electrical safety feedback module did not send alarm signal, adjust the spray angle of spray angle adjustable direct current spraying squirt, so that follow spray angle adjustable direct current spraying squirt spun vaporific water column falls in the wet spot diameter of insulator detection face and satisfies the hydrophobicity and detects the requirement.
According to the invention, the direct-current spray water gun with the adjustable spray angle is used, the spray angle of the direct-current spray water gun with the adjustable spray angle is constructed, and the water inlet flow and the one-time pumping input duration of the direct-current spray water gun with the adjustable spray angle are adjusted under the condition of keeping the water inlet pressure of the direct-current spray water gun with the adjustable spray angle constant, so that water is sprayed on the hydrophobicity detection surface of the insulator under the condition of adjusting the distance between the spray opening and the hydrophobicity detection surface of the insulator, and the difficulty of hydrophobicity detection of the insulator (namely, the insulator arranged on a pole tower) is reduced.
The spraying distance L is not more than the maximum effective hydrophobicity detection distance of the direct-current spraying water gun with the adjustable spraying angle and is more than the electrical safety distance, so that the danger probability of hydrophobicity detection of the insulator can be reduced.
Fourth aspect of the invention
An in-use insulator hydrophobicity detection device comprises an aircraft and a remote controller which are connected through wireless communication, wherein a distance measurement module, a camera module, a control module, a spraying module with adjustable spraying distance and a water tank are installed on the aircraft, the spraying module with adjustable spraying distance comprises a direct-current spraying water gun with an adjustable spraying angle, a spraying angle adjusting actuator and a constant-pressure flow adjusting pumping assembly, the spraying angle adjusting actuator is used for adjusting the spraying angle of the direct-current spraying water gun with the adjustable spraying angle, a water outlet of the constant-pressure flow adjusting pumping assembly is communicated with a water inlet pipeline of the direct-current spraying water gun with the adjustable spraying angle, a water pumping port of the constant-pressure flow adjusting pumping assembly is used for submerging into a water body of the water tank, the distance measurement module is used for measuring the spraying distance between a spraying port of the direct-current spraying water gun with the adjustable spraying, the camera module is used for shooting the scene of the hydrophobicity detection surface of the insulator, the input end of the control module is correspondingly and electrically connected with the distance measurement module, and the output end of the control module respectively drives the spray angle adjusting actuator, the constant-voltage flow-regulating pumping assembly and the camera module through corresponding driving circuits.
Preferably, the direct current spray water gun with the adjustable spray angle selects a low-pressure direct current spray water gun with the adjustable spray angle, which has the functions of keeping the spray pressure unchanged and changing the flow along with the change of the spray angle.
Preferably, the constant pressure flow-regulating pumping assembly may comprise a variable displacement pump.
Preferably, the constant-pressure flow-regulating pumping assembly may further include a pressure reducing valve for stabilizing a pressure at a water inlet of the direct-current spray water gun with the adjustable spray angle.
Preferably, an electrical safety feedback module for setting an alarm distance can be further mounted on the aircraft, the electrical safety feedback module is correspondingly and electrically connected with the input end of the control module, and the alarm distance is greater than the electrical safety distance.
The use method of the device for detecting hydrophobicity of the insulator comprises the following steps:
step 1, operating an aircraft to approach an insulator hydrophobicity detection surface by using a remote controller, measuring a spray distance L between a spray nozzle of a direct-current spray water gun with an adjustable spray angle and the insulator hydrophobicity detection surface in real time, and operating the aircraft to hover when the spray distance L is smaller than the maximum effective hydrophobicity detection distance of a spray module with an adjustable spray distance and is larger than an electrical safety distance;
step 2, at said spray distance L at T1Duration (T)1The duration can be set according to needs, such as 3s, 10s and the like, and is mainly used for setting the starting mode of insulator hydrophobicity detection) to be kept unchanged, after the spraying distance L is smaller than the maximum effective hydrophobicity detection distance of the spraying module with the adjustable spraying distance, the control module adjusts the spraying angle α of the direct-current spraying water gun with the adjustable spraying angle and the output flow Q of the constant-pressure flow-adjusting pumping assembly and controls the primary output duration t of the constant-pressure flow-adjusting pumping assembly, and detects the hydrophobicity level of the insulator hydrophobicity detection surface according to an insulator hydrophobicity test water absorption analysis method, wherein the spraying angle α, the output flow Q and the primary output duration t of the constant-pressure flow-adjusting pumping assembly meet the requirements
Q＝kd2+b
Wherein α is a spray angle, R is the diameter of a wet spot sprayed on a hydrophobic detection surface by mist water flow, L is a spray distance, Q is an output flow, d is the diameter of a spray opening of a direct-current spray water gun with an adjustable spray angle, k is a constant, b is a constant, t is one-time output duration, and V is one-time spray volume;
and 3, after water is sprayed to the insulator hydrophobicity detection surface according to the water spraying grading method of the insulator hydrophobicity detection test, the control module controls the camera module to shoot the scene of the insulator hydrophobicity detection surface at the corresponding time.
The invention uses the aircraft to drive the distance measuring module, the camera module, the control module, the spraying module with adjustable spraying distance and the water tank to rise to proper positions, and uses the direct-current spraying water gun with adjustable spraying angle, the spraying angle adjusting actuator and the constant-pressure flow-adjusting pumping assembly to reduce the requirement on the distance between the insulator detection surface and the atomizing port in the insulator hydrophobicity detection test, thereby reducing the difficulty of adjusting the position of the aircraft and reducing the influence of water flow reaction force on the stability of the aircraft and the insulator hydrophobicity detection test in the insulator hydrophobicity detection process.
It should be understood that the first, second, third and fourth portions of the present invention have relevance, and the structure and the related description having the same technical terms can be used for explaining the concept and the protection scope of the same technical terms of another portion.
The invention is described in detail above with reference to the figures and examples. It should be understood that in practice it is not intended to be exhaustive of all possible embodiments, and the inventive concepts of the present invention are presented herein by way of illustration. Without departing from the inventive concept of the present invention and without any creative work, a person skilled in the art should, in all of the embodiments, make optional combinations of technical features and experimental changes of specific parameters, or make a routine replacement of the disclosed technical means by using the prior art in the technical field to form specific embodiments, which belong to the content implicitly disclosed by the present invention.
Claims (7)
1. The device for detecting hydrophobicity of the insulator in use is characterized by comprising a distance measuring module, a control module and a spraying module with adjustable spraying distance, wherein the spraying module with adjustable spraying distance comprises a direct-current spraying water gun with adjustable spraying angle, a spraying angle adjusting actuator and a constant-pressure flow-adjusting pumping assembly, the spraying angle adjusting actuator is used for adjusting the spraying angle of the direct-current spraying water gun with adjustable spraying angle, and a water outlet of the constant-pressure flow-adjusting pumping assembly is communicated with a water inlet pipeline of the direct-current spraying water gun with adjustable spraying angle; the distance measuring module is used for measuring the spraying distance between a spraying port of the direct-current spraying water gun with the adjustable spraying angle and the hydrophobicity detection surface of the insulator, the input end of the control module is electrically connected with the distance measuring module in a corresponding mode, and the output end of the control module drives the spraying angle adjusting actuator and the constant-voltage flow-adjusting pumping assembly through corresponding driving circuits respectively.
2. The in-use insulator hydrophobicity detecting apparatus of claim 1, wherein the constant voltage, flow-regulated pumping assembly comprises a variable displacement pump.
3. The insulator hydrophobicity detecting device as recited in claim 2, wherein the constant-pressure flow-regulating pumping assembly further comprises a pressure reducing valve, and the pressure reducing valve is used for keeping the pressure of a water inlet of the direct-current spray water gun with the adjustable spray angle stable.
4. The insulator hydrophobicity detecting device according to claim 1, wherein the dc spray gun with the adjustable spray angle is a low-pressure dc spray gun with an adjustable spray angle, which has a function of 'constant spray pressure and variable flow rate with change of spray angle'.
5. The hydrophobic detection device for the in-use insulator of claim 1, further comprising an electrical safety feedback module for setting an alarm distance, wherein the electrical safety feedback module is electrically connected with an input end of the control module, and the alarm distance is greater than the electrical safety distance.
6. The hydrophobic detection apparatus for an in-use insulator of claim 5, wherein the electrical safety feedback module comprises at least one of a mutual coil, a mutual capacitance, and a magnetic field strength sensor.
7. The method for configuring parameters of the device for detecting hydrophobicity of the insulator as claimed in claim 1, comprising the steps of:
step 1, measuring a spraying distance L between a spraying port of a direct-current spraying water gun with an adjustable spraying angle and an insulator hydrophobicity detection surface by using a distance measuring module;
step 2, adjusting a spray angle α of the direct-current spray water gun with the adjustable spray angle by using a spray angle adjusting actuator to enable the spray angle α to meet the requirement
Wherein α is a spray angle, R is a diameter of a wet spot sprayed on the hydrophobic detection surface by mist water flow, and L is a spray distance;
step 3, adjusting the output flow Q of the constant-pressure flow-regulating pumping assembly and setting a primary pumping output time length t to enable the output flow Q and the primary pumping output time length t to meet the requirement
Q＝kd2+b
Wherein Q is the output flow; d is the diameter of the spray opening of the direct current spray water gun with the adjustable spray angle; k is a constant and b is a constant; t is the primary pumping output duration of the constant-pressure flow-regulating pumping assembly; v is the primary water spraying volume.
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