CN206471023U - A kind of safe experience apparatus of high emulation step voltage - Google Patents
A kind of safe experience apparatus of high emulation step voltage Download PDFInfo
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- CN206471023U CN206471023U CN201620585575.9U CN201620585575U CN206471023U CN 206471023 U CN206471023 U CN 206471023U CN 201620585575 U CN201620585575 U CN 201620585575U CN 206471023 U CN206471023 U CN 206471023U
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Abstract
The utility model discloses a kind of safe experience apparatus of high emulation step voltage, provided with front end low-field electrode, rear end low-field electrode, high-field electrode, semi-conducting rubber pad, insulator foot, current-limiting resistance and AC power supply module；Semi-conducting rubber pad is laid on the top surface of insulator foot, front end low-field electrode, rear end low-field electrode and high-field electrode are installed between the bottom surface of semi-conducting rubber pad and the top surface of insulator foot, front end low-field electrode, rear end low-field electrode and high-field electrode are electrically connected with the leading section of the semiconductor board of semi-conducting rubber pad, rearward end and middle part respectively, front end low-field electrode and rear end low-field electrode are grounded respectively, high-field electrode is electrically connected with one end of current-limiting resistance, and the output head anode of AC power supply module is electrically connected with the other end of current-limiting resistance, negative pole of output end ground connection.The utility model can help the more real characteristic experienced to step voltage and understand study step voltage of user.
Description
Technical field
The utility model is related to a kind of safe experience apparatus of high emulation step voltage.
Background technology
So-called step voltage, when just referring to that earth fault occurs for electrical equipment, current potential point around place is entered in earth current
Voltage between the people of cloth area walking, its bipod.It is in its working environment to there is height for the practitioner of power industry more
Line ball road, therefore the safe experiential learning of step voltage is carried out to it, thing of being got an electric shock as caused by high-tension line short circuit grounding is avoided
Therefore, it appears it is particularly important.
Utility model content
Technical problem to be solved in the utility model is：A kind of safe experience apparatus of high emulation step voltage is provided.
Above-mentioned technical problem is solved, the technical scheme that the utility model is used is as follows：
A kind of safe experience apparatus of high emulation step voltage, it is characterised in that：Described high emulation step voltage peace
All experiment devices are provided with front end low-field electrode, rear end low-field electrode, high-field electrode, semi-conducting rubber pad, insulator foot, current limliting electricity
Resistance and AC power supply module；The semi-conducting rubber pad is by semiconductor board and the rubber layer group being coated on outside the semiconductor board
Into, the semi-conducting rubber pad is laid on the top surface of the insulator foot, the front end low-field electrode, rear end low-field electrode and
High-field electrode is installed between the bottom surface of the semi-conducting rubber pad and the top surface of the insulator foot, the front end low tension
Pole, rear end low-field electrode and high-field electrode respectively with the leading section of the semiconductor board of the semi-conducting rubber pad, rearward end and in
Portion is electrically connected, and the front end low-field electrode and rear end low-field electrode pass through the wired earth through the insulator foot, institute respectively
State high-field electrode to electrically connect with one end of the current-limiting resistance by the wire through the insulator foot, the AC power mould
The output head anode of block is electrically connected with the other end of the current-limiting resistance, negative pole of output end ground connection；The AC power supply module leads to
Cross the voltage-to-ground virtual value that the current-limiting resistance and high-field electrode be added in the middle part of the semiconductor board of the semi-conducting rubber pad small
In 10mA* ρ * L/s, the AC power supply module is by the current-limiting resistance and high-field electrode to the half of the semi-conducting rubber pad
The current effective value exported in the middle part of conductor plate is in 5mA between 10mA；Wherein, ρ, L and s are respectively the conductance of the semiconductor board
Rate, length and cross-sectional area.
As a kind of preferred embodiment of the present utility model, described AC power supply module is by step-up transformer and pressure regulation
Control cabinet is constituted；Input access 220V electric mains, output end and the original of the step-up transformer of the Regulation Control case
Side winding parallel connection, the two ends of the vice-side winding of the step-up transformer are the output head anode of the AC power supply module
And negative pole of output end.
As a kind of preferred embodiment of the present utility model, the described safe experience apparatus of high emulation step voltage is also
Edge handrail is thoroughly done away with provided with two；The two eradications edge handrail is each attached on the top surface of the insulator foot and respectively positioned at described half
The left and right sides position of conductor rubber blanket.
As a kind of preferred embodiment of the present utility model, set along the longitudinal direction on the top surface of the semi-conducting rubber pad
There are multiple foot print patterns；The distance between two neighboring described foot print patterns are 60cm.
As a kind of preferred embodiment of the present utility model, the semiconductor board of the semi-conducting rubber pad is partly led for rectangle
Body plate, the front end low-field electrode, rear end low-field electrode and high-field electrode are strip electrode.
It is used as a kind of preferred embodiment of the present utility model, the length of the semiconductor board of the semi-conducting rubber pad, width
Degree, thickness and resistivity are respectively 10cm, 2mm, 2cm and 1.25M Ω, the AC power supply module by the current-limiting resistance and
The voltage-to-ground virtual value that high-field electrode is added in the middle part of the semiconductor board of the semi-conducting rubber pad is less than 1000V, the exchange
The electric current that power module is exported by the current-limiting resistance and high-field electrode to the semiconductor board middle part of the semi-conducting rubber pad
Virtual value is 5mA to 10mA.
Compared with prior art, the utility model has the advantages that：
The utility model is capable of the step voltage distribution character after the simulated high-pressure line short of high emulation ground connection, and
And, the voltage with tingling sensation can be produced to user and the electric current for flowing into human body is ensured within safe range, and can profit
With the soil texture of environment where the rubber layer simulated high-pressure circuit of semi-conducting rubber pad, so as to help user more real
The characteristic of study step voltage is experienced and understood to step voltage.
Brief description of the drawings
The utility model is described in further detail with specific embodiment below in conjunction with the accompanying drawings：
Fig. 1 is the main structure diagram of the safe experience apparatus of high emulation step voltage of the present utility model；
Fig. 2 is the overlooking the structure diagram of the safe experience apparatus of high emulation step voltage of the present utility model.
Embodiment
As depicted in figs. 1 and 2, the safe experience apparatus of high emulation step voltage of the present utility model, edge is thoroughly done away with provided with two
Handrail 1, front end low-field electrode 2, rear end low-field electrode 9, high-field electrode 3, semi-conducting rubber pad 4, insulator foot 5, current-limiting resistance 6
And AC power supply module.
Above-mentioned semi-conducting rubber pad 4 is made up of rectangular shaped semiconductor plate and the rubber layer being coated on outside semiconductor board, rectangle
Length, width, thickness and the resistivity of semiconductor board are respectively 10cm, 2mm, 2cm and 1.25M Ω, are partly led so as to utilize
Body template die is intended the electrical resistivity property of soil, the texture of soil is simulated using rubber layer；Front end low-field electrode 2, rear end low-field electrode 9
It is strip electrode with high-field electrode 3, insulator foot 5 is placed on the ground and insulated with ground, and semi-conducting rubber pad 4 is laid on absolutely
On the top surface of edge base 5, front end low-field electrode 2, rear end low-field electrode 9 and high-field electrode 3 are installed in semi-conducting rubber pad 4
Between the top surface of bottom surface and insulator foot 5, front end low-field electrode 2, rear end low-field electrode 9 and high-field electrode 3 respectively with semiconductor
Leading section, rearward end and the middle part electrical connection of the semiconductor board of rubber blanket 4, front end low-field electrode 2 and rear end low-field electrode 9 are distinguished
One end that wire through insulator foot 5 and current-limiting resistance 6 are passed through by the wired earth through insulator foot 5, high-field electrode 3
Electrical connection, the output head anode of AC power supply module is electrically connected with the other end of current-limiting resistance 6, negative pole of output end is grounded；Exchange
The voltage-to-ground that power module is added in the middle part of the semiconductor board of semi-conducting rubber pad 4 by current-limiting resistance 6 and high-field electrode 3 is effective
Value is less than 1000V, and AC power supply module is by current-limiting resistance 6 and high-field electrode 3 in the middle part of the semiconductor board of semi-conducting rubber pad 4
The current effective value of output in 5mA between 10mA so that so that high-field electrode 3 is low with front end low-field electrode 2 and rear end respectively
Step voltage gradient is formed between piezoelectricity pole 9, to simulate the step voltage characteristic under true environment, also, AC power supply module
By current-limiting resistance 6 and electric current from high-field electrode 3 to output in the middle part of the semiconductor board of semi-conducting rubber pad 4 by semiconductor board to
Front end low-field electrode 2 and rear end low-field electrode 9 spread, and the voltage's distribiuting simulated after high-tension line short circuit grounding of authenticity is special
Property, and it is 1mA to flow into the maximum current of people foot, to ensure the use of the safe experience apparatus of this high emulation step voltage
The personal safety of person.Two eradication edge handrails 1 are each attached on the top surface of insulator foot 5 and respectively positioned at semi-conducting rubber pad 4
Left and right sides position.
Wherein, above-mentioned AC power supply module is made up of step-up transformer 7 and Regulation Control case 8；The input of Regulation Control case 8
The primary side winding terminated into 220V electric mains, output end and step-up transformer 7 is connected in parallel, the secondary of step-up transformer 7 around
The two ends of group are the output head anode and negative pole of output end of AC power supply module.
In addition, multiple foot print patterns 4a can be also set up on the top surface of above-mentioned semi-conducting rubber pad 4 along the longitudinal direction；Adjacent two
The distance between individual foot print patterns 4a is 60cm, in order to remind user's walking spacing.
Therefore, using the safe experience apparatus of high emulation step voltage of the present utility model, safety study body can be carried out
Test outer, step voltage gradient characteristics can also be analyzed, can be got an electric shock by the step voltage that undergoes, allow student's understanding across
The reason for principle, the easy place for producing step voltage, the step voltage of step voltage generation are got an electric shock, runs into how step voltage is come
Correctly area out of danger, helps student to grasp the method for correctly preventing step voltage, it is to avoid unnecessary electric shock accidents
Occur.
It should be noted that length, width, thickness and the resistivity of above-mentioned rectangular shaped semiconductor plate also can select other sizes
Specification, only need to ensure that AC power supply module is added in the semiconductor board of semi-conducting rubber pad 4 by current-limiting resistance 6 and high-field electrode 3
The voltage-to-ground virtual value at middle part be less than 10mA* ρ * L/s, wherein, ρ, L and s be respectively the semiconductor board electrical conductivity,
Length and cross-sectional area.
Wherein, above-mentioned voltage-to-ground virtual value is less than 10mA* ρ * L/s and current effective value in 5mA to taking between 10mA
It is worth scope, by being drawn by following thinking：
If the total current 10mA for flowing through semi-conducting rubber pad is designed, wherein respectively flowing 5mA to both sides.To ensure that voltage exists
In 60cm stride, there is enough voltage that electric current can be made to pour into human body, voltage is set to 200V, then the electricity in 200cm length
Pressure should be in 1000V.Then the resistance of semi-conducting rubber pad is 200k Ω.
If the thickness of semi-conducting rubber pad is 1cm, width is 0.5 meter, and length is 2 meters, according to formulaWherein ρ
For resistivity, L is that length, s are sectional area.ρ=R*S/L=0.2M*0.01*0.5/2=500 Europe rice.Reduction to 2mm it is thick,
2cm is wide, the measurement resistance in the test piece of 10cm length is the ÷ (0.002 × 0.02) of r=500 × 0.1=1.25M Ω.
If test piece is 3mm thick, resistance is 0.8M.The weight of semiconductor board is surveyed for 54kG (proportion 2.7) Human Tolerance
Examination, wearing can be with resistance to by more than 200V between the foot of socks two, and 120V stimulates very strong on 125V or so ankles barefoot.Whole plate glue 1
Rice * 0.02*6mi*2.7=324kG.
Power Management Design method.It is sufficient that electric power output voltage reaches 1000V, is easy to adjust, can will export transformation
Device is set as 250V:2000V.Due to there was only the output of 10mA electric currents, power only has 20W, so step-up transformer is held using 50VA
Amount.The minimum 200VA of pressure regulator pressure regulator.When the resistance string in 100k Europe is on output loop, it is ensured that maximum
Short circuit current flow be less than 10mA.Meter measurement output current can be connect on resistance, is 10mA during 1kV.
Semiconductor board computational methods.After equipment is powered, such as medium voltage is 1000V, average every on 4 meters of long rubber cushions
Rice, which has on 500V voltages, 60cm stride, 300V voltages.There should be enough tingling sensations.To ensure safety, glue is flowed to by high pressure
Electric current on pad is maintained at 5-10mA, and the width 10cm as shared by people's pin is calculated, and the maximum current for flowing into human body is 1mA.In this electricity
Flow down, the voltage's distribiuting on rubber cushion is substantially uniform, and it is exactly to be carried between the foot of human body two that stride, which is multiplied by voltage's distribiuting,
Voltage.
The utility model is not limited to above-mentioned embodiment, according to the above, according to the ordinary skill of this area
Knowledge and customary means, under the premise of the above-mentioned basic fundamental thought of the utility model is not departed from, the utility model can also be made
The equivalent modifications of other diversified forms, replace or change, all fall among protection domain of the present utility model.
Claims (5)
1. a kind of safe experience apparatus of high emulation step voltage, it is characterised in that：Described high emulation step voltage safety
Experience apparatus is provided with front end low-field electrode (2), rear end low-field electrode (9), high-field electrode (3), semi-conducting rubber pad (4), insulation
Base (5), current-limiting resistance (6) and AC power supply module；The semi-conducting rubber pad (4) is by semiconductor board and is coated on described half
Rubber layer composition outside conductor plate, the semi-conducting rubber pad (4) is laid on the top surface of the insulator foot (5), described
Front end low-field electrode (2), rear end low-field electrode (9) and high-field electrode (3) are installed in the bottom surface of the semi-conducting rubber pad (4)
Between the top surface of the insulator foot (5), the front end low-field electrode (2), rear end low-field electrode (9) and high-field electrode (3)
Leading section, rearward end and the middle part with the semiconductor board of the semi-conducting rubber pad (4) are electrically connected respectively, the front end low tension
Pole (2) and rear end low-field electrode (9) are respectively by the wired earth through the insulator foot (5), and the high-field electrode (3) is led to
The wire crossed through the insulator foot (5) is electrically connected with one end of the current-limiting resistance (6), the AC power supply module it is defeated
Go out proper pole electrically connected with the other end of the current-limiting resistance (6), negative pole of output end ground connection；The AC power supply module passes through institute
State the voltage-to-ground that current-limiting resistance (6) and high-field electrode (3) be added in the middle part of the semiconductor board of the semi-conducting rubber pad (4) effective
Value is less than 10mA* ρ * L/s, and the AC power supply module is by the current-limiting resistance (6) and high-field electrode (3) to the semiconductor
The current effective value exported in the middle part of the semiconductor board of rubber blanket (4) is in 5mA between 10mA；Wherein, ρ, L and s are respectively described
Electrical conductivity, length and the cross-sectional area of semiconductor board.
2. the safe experience apparatus of high emulation step voltage according to claim 1, it is characterised in that：Described alternating current
Source module is made up of step-up transformer (7) and Regulation Control case (8)；The input access 220V of the Regulation Control case (8) is handed over
Stream civil power, output end and the primary side winding of the step-up transformer (7) are connected in parallel, the secondary of the step-up transformer (7) around
The two ends of group are the output head anode and negative pole of output end of the AC power supply module.
3. the safe experience apparatus of high emulation step voltage according to claim 1, it is characterised in that：Described high emulation
The degree safe experience apparatus of step voltage is additionally provided with two eradication edge handrails (1)；The two eradication edge handrail (1) is each attached to described exhausted
It is located on the top surface of edge base (5) and respectively the left and right sides position of the semi-conducting rubber pad (4).
4. the safe experience apparatus of high emulation step voltage according to claim 1, it is characterised in that：The semiconductor rubber
Multiple foot print patterns (4a) are provided with the top surface of rubber cushion (4) along the longitudinal direction；Between the two neighboring foot print patterns (4a)
Distance is 60cm.
5. the safe experience apparatus of high emulation step voltage according to Claims 1-4 any one, it is characterised in that：
The semiconductor board of the semi-conducting rubber pad (4) is rectangular shaped semiconductor plate, the front end low-field electrode (2), rear end low-field electrode
And high-field electrode (3) is strip electrode (9).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620585575.9U CN206471023U (en) | 2016-06-14 | 2016-06-14 | A kind of safe experience apparatus of high emulation step voltage |
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| CN201620585575.9U CN206471023U (en) | 2016-06-14 | 2016-06-14 | A kind of safe experience apparatus of high emulation step voltage |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110648574A (en) * | 2019-09-30 | 2020-01-03 | 武汉大学 | Step voltage and contact voltage simulation experiment device and method |
| CN111239475A (en) * | 2020-02-24 | 2020-06-05 | 云南电网有限责任公司临沧供电局 | Method and system for alarming step voltage of power-frequency follow current fault of reinforced concrete pole tower |
-
2016
- 2016-06-14 CN CN201620585575.9U patent/CN206471023U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110648574A (en) * | 2019-09-30 | 2020-01-03 | 武汉大学 | Step voltage and contact voltage simulation experiment device and method |
| CN111239475A (en) * | 2020-02-24 | 2020-06-05 | 云南电网有限责任公司临沧供电局 | Method and system for alarming step voltage of power-frequency follow current fault of reinforced concrete pole tower |
| CN111239475B (en) * | 2020-02-24 | 2022-02-01 | 云南电网有限责任公司临沧供电局 | Method and system for alarming step voltage of power-frequency follow current fault of reinforced concrete pole tower |
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