CN101777405A - flowing water resistor and device for carrying out on-line insulation detection by using the same - Google Patents
flowing water resistor and device for carrying out on-line insulation detection by using the same Download PDFInfo
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- CN101777405A CN101777405A CN200910076180A CN200910076180A CN101777405A CN 101777405 A CN101777405 A CN 101777405A CN 200910076180 A CN200910076180 A CN 200910076180A CN 200910076180 A CN200910076180 A CN 200910076180A CN 101777405 A CN101777405 A CN 101777405A
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Abstract
The invention discloses a flowing water resistor and a device for carrying out on-line insulation detection by using the same, wherein the flowing water resistor comprises a carrier which is made of insulation materials, has a certain geometrical shape and is provided with a water inlet and a water outlet, and water resistance liquid continuously inflows from the water inlet and outflows from the water outlet at a certain flow velocity and flow; the on-line insulation detection device comprises a water cooling slot, a water tank with a water pump, a flowing water resistor, a high-voltage transformer, a voltage regulator, a control circuit and a current detection and alarm protection device, wherein the water cooling slot is connected with the water tank by the flowing water resistor; the connecting end of the flowing water resistor and the water tank is grounded; the input end of the voltage regulator is connected with an external power source, and the output end thereof is connected with the input end of the transformer; the output end of the transformer is connected with the water cooling slot by a high-tension cable; the current detection and alarm protection device is connected with the circuit between the voltage regulator and the high-voltage transformer; and the control circuit is connected with the voltage regulator and the current detection and alarm protection device.
Description
Technical field
The present invention relates to electricity (magnetic) line cable product insulation detection range, particularly relate to a kind of circulating water resistance and utilize this resistance the insulation property of electric wire goods to be carried out the device of online detection.
Background technology
The electricity of online production (magnetic) line cable goods by high temperature sintering after temperature higher, need send water-cooling groove usually to and cool off by cold water, then its insulation property are detected.Electricity (magnetic) line cable product insulated, and to detect be the important step that guarantees its product quality.The detection of insulating normally detects its insulation resistance.Insulation resistance is to power up to be pressed on dielectric, after finishing through the certain hour polarization process, flows through the resistance of the leakage current correspondence of dielectric.Insulation resistance is the leading indicator of reflection electric wire product insulation characterisitic, it has reflected that the electric wire product bears the size of electrical breakdown or thermal breakdown ability, all exists extremely close relation with insulation dielectric loss and insulating material progressively deterioration under in working order etc.The insulation resistance of electric wire product depends primarily on selected insulating material at present, but technological level is very big to the influence of insulation resistance, by detection to wire cable insulating resistance, can find the defective of technology, for the product of just producing, it is to judge one of important evidence that product quality changes that online insulation detects.
The method and apparatus that the online insulation of present domestic dispatch from foreign news agency (magnetic) line cable product detects, usually adopt with high-tension steel ball and contact with detected product surface, mode to the discharge of detected electricity (magnetic) line cable is carried out the online detection of insulation property, and there are the following problems for this method and apparatus:
Because high-tension steel ball is the some way of contact with contacting of detected electric wire, the detection so the steel ball discharge can only be insulated to the local contact point of electric wire is carried out the technological requirement that integral insulation detects and can not satisfy to electric wire; Do not put in place when sintering behind the wrapped copper bare wire of the surface insulation film of electric wire, tradition is with high-tension steel ball insulation detection method also can't judge;
Because carrying out the electric wire of online insulation detection moves during fabrication, so the two existed mantle friction when steel ball contacted with electric wire, this surface insulation film to line can cause wearing and tearing, surface to steel ball is also lossy, steel ball needs periodic the replacing, but also can leave over the electric wire goods of residue after detecting of trace.
Summary of the invention
The objective of the invention is to problem at the prior art existence, a kind of device that electricity (magnetic) line cable goods are insulated and detect is provided, can satisfy the technological requirement that electric wire is insulated comprehensively and detects, and avoid damaging the surface insulation film of test product.
Thinking of the present invention is: utilize water can conduct electricity and have this characteristic of certain resistance, directly in the water of cooling electric wire goods, apply specified high voltage, if the total output current of high-voltage mutual inductor is in rated range, the insulation property that test product is described meet the requirements, if total output current overruns, illustrate that the insulation property of this section test product are undesirable.During the on-line testing goods, water is evaporated in the time of can making the part cooling because of electric wire high temperature, electric wire in motion process also can be taken away water a part and have part water also can spill into water jacket from inside groove in addition, therefore needs constantly to replenish cold water by water replanishing device in water-cooling groove.Because the water in the water-cooling groove has been applied in high voltage, connects with water resistance (device) between water replanishing device and water-cooling groove, guarantees that the high-tension electricity in the tank can not work the mischief to staff and equipment.
For realizing goal of the invention, the present invention at first provides a kind of circulating water resistor, this circulating water resistor comprise make by insulating material, certain geometric shape is arranged and water inlet is arranged and the water resistance carrier of delivery port, and the water power blocking solution with controlled flow velocity and flow from water resistance carrier water inlet flow to continuously, water power blocking solution when delivery port flows out continuously in the carrier, described water power blocking solution is the electrolyte aqueous solution with the water-soluble formation of a certain proportion of electrolyte.
The shape of above-mentioned water resistance carrier can be as required or user's requirement typing, as shapes such as column type, rectangular build, U type, grooved, spiral casts.
For conductivity and the resistance value that makes the water power blocking solution meets the requirements, can be in the water liquid of water-cooling groove to add the NaCl of different content of 0.01%-30% or other by the requirement of design water power resistance water-soluble and do not have the soluble salt of harm people and product, be made into certain density electrolyte water liquid.Less demanding as test product, the also available running water of water power blocking solution is to reduce cost.
This circulating water resistance of invention has the connection in series-parallel characteristic of common solid-state resistance in circuit, but also has the flow behavior that common solid-state resistance does not have; The flowability of utilizing this water resistance to have both can obtain being similar to the circulating water resistance of constant-resistance value, also can obtain to become the circulating water resistance of resistance.
When the geometry of water resistance carrier and length, sectional area etc. regularly, under the constant situation of all conditions (as flow and flow velocity, temperature, electrolytical composition and the concentration etc. of water power blocking solution), the water power blocking solution is continuously flowed into from water inlet, flow out continuously from delivery port, draw the lead (lead is inner to be connected with liquid phase) that links to each other with external circuit at certain two position (as turnover, two ends, the mouth of a river) of carrier, energising when measuring the aqueous water resistance value as a result its value be similar to the constant-resistance value, the water resistor of this moment is the circulating water resistor of constant resistance;
On the basis of the circulating water resistor of the constant resistance of above-mentioned acquisition, by changing water power blocking solution one kind or multiple inside and outside factor and condition (as flow, the flow velocity of water power blocking solution, factors such as temperature, electrolytical composition and concentration) just can obtain to become the circulating water resistor of resistance.
For realizing goal of the invention, the present invention also provides a kind of circulating water resistor that utilizes to carry out online insulation detection device, this device comprises water-cooling groove, the water tank of band water pump, the circulating water resistor, high-tension transformer, voltage regulator, control circuit, current detecting and alarm protecting apparatus, wherein water-cooling groove is connected by the water tank of circulating water resistor with the band water pump, and the circulating water resistor is connected high-voltage conducting wires (high-voltage probe) with the link of water-cooling groove, and connect the output of high-tension transformer by this high-voltage conducting wires (high-voltage probe), the input of high-tension transformer connects the output of voltage regulator, and the outside power supply that provides is provided the input of voltage regulator; Current detecting and alarm protecting apparatus are connected with circuit between voltage regulator and the high-tension transformer; Control circuit is connected with voltage regulator by the pressure regulation drive circuit, and control circuit is connected with current detecting and alarm protecting apparatus.
The link of described circulating water resistor and water tank is provided with earth connection, and this device is when detecting, and this ground wire answers ground connection good.
Described circulating water resistor can be divided into into the water resistor again and go out water resistor according to their function, and water tank supplies water to water-cooling groove by the water inlet resistor, and the water in the water-cooling groove returns water tank by going out water resistor.
The double-deck groove of intake chamber and effluent trough is normally made, comprised to described water-cooling groove by metal material, be connected by metal between two-layer.
According to its insulating resistance value difference of detected product, need calculate and set water inlet resistor and the resistance value that goes out water resistor in advance, by setting the geometry of carrier, comprise length, sectional area etc., and flow and flow velocity, temperature, electrolytical composition and the concentration etc. of control water power blocking solution, can making into, the water resistor reaches set point with the resistance value that goes out water resistor.
The invention has the beneficial effects as follows: utilize aqueous water that omnibearing contact is carried out in the surface and the inner infiltration of test product, can carry out complete detection to the insulation property of electric wire goods, remedied prior art and can only carry out the defective of minor insulation Performance Detection, and can not cause wearing and tearing the test product surface to the electric wire goods; While is also detected the summing-up of front end operation (as the quality of sintering effect), utilizing circulating water resistance that the electric wire product is carried out online insulation detects, be that water cooling equipment and resistance test equipment are integrated dexterously with original two complete equipments, not only simplified equipment, saved the useful space of work-yard, and the isolation by circulating water resistance, guarantee that the high-tension electricity of online insulation checkout equipment output in tank can not work the mischief to staff and equipment.
Description of drawings
Fig. 1 is a column type water resistor structure chart
Fig. 2 is a spiral cast water resistor structure chart
Fig. 3 is a U type water resistor structure chart
Fig. 4 is a grooved water resistor structure chart
Fig. 5 uses the structured flowchart that the circulating water resistor carries out online insulation detection device
Fig. 6 is the structural representation of water-cooling groove
Fig. 7 is the circuit diagram of a kind of online insulation detection device embodiment
Fig. 8 is the circuit diagram of another kind of insulation detection device embodiment
Fig. 9 is the control panel schematic diagram at a kind of online insulation detection device
Embodiment
In order to make purpose of the present invention, technical scheme and advantage clearer, below in conjunction with drawings and Examples, to circulating water resistance of the present invention and use the device that this circulating water resistance carries out online resistance test and be further elaborated.Should be appreciated that embodiment described herein only in order to explanation the present invention, and be not used in qualification the present invention.
At first circulating water resistor of the present invention and acquisition mode thereof are described.
Usually employed resistance its resistance size no matter in circuit all is to occur with solid-state example, in hardware.Water is the solution of materials such as acid, alkali, salt (have other liquid object of the similar performance too) normally; Water is the transparency liquid of colorless and odorless at normal temperatures and pressures.Pure water has atomic weak conductive capability, be that its resistance value is very big, be approximately insulator, if the size of its resistance value also changes behind electrolyte of the same race of adding varying number level in pure water (as: carbonic acid that carbon dioxide forms in mineral matter, the dissolving atmosphere) or the multiple electrolyte, its conductive capability will change with its resistance change.
The NaCl (or other nontoxic and equipment, product, personnel and environment are not had a soluble salt of harm) that adds 0.01%-30% according to the designing requirement of circuit with running water is made into the electrolytical water of variable concentrations and can obtains the water power blocking solution at normal temperatures, can reduce manufacturing cost like this, and there is not an infection, (less demanding as test product, the water power blocking solution also can directly be used running water, to reduce cost).If obtain high-precision water power blocking solution, the NaCl (or other nontoxic and equipment, product, personnel and environment are not had a soluble salt of harm) that adds 0.01%-30% with pure water is made into the electrolytical water of variable concentrations and gets final product.
According to this characteristic, can and water inlet be arranged and the solid insulator goods of delivery port are made the carrier of water resistor with different geometric shapes, the geometry of carrier can be as required or according to user's requirement typing, as column type, rectangular build, U type, grooved, spiral cast etc.
The electrolyte of the same race that contains variable concentrations or the multiple electrolytical aqueous solution are flow to from water inlet continuously, flow out, just can obtain the various circulating water resistors that are lower than the different resistance values of pure water resistance from delivery port.Draw the lead (lead is inner to be connected with liquid phase) that links to each other with external circuit at certain two position (multi-section position) of carrier, measure its resistance value, this resistance value is the resistance of this circulating water resistor.As embodiment, as Fig. 1, Fig. 2, Fig. 3, shown in Figure 4, be respectively column type, U type, grooved, spiral cast circulating water resistor, 1 is water inlet among the figure, and 2 is delivery port, and 3 for measuring the lead of circulating water resistance value, and arrow indicates the direction of Inlet and outlet water.
The flow of water power blocking solution and flow velocity can be controlled, and when when determining the resistance of water resistor, the water power blocking solution is flow to by certain flow velocity and flow and flow out.
Material according to carrier can be divided into flexible and rigidity water resistance (device), the water resistor of making as carrier as the high pressure resistant insulation material of easy deformation such as rubber and nylon hose all belongs to flexible water resistance (device) class, it is convenient to technology arrangement and installation, and the water resistance of making as carrier as the high pressure resistant insulation material of setting such as pottery, resin and glass (device) belongs to rigidity water resistance (device) class.
The resistance size of water resistance is except outside the Pass having with electrolytical content and material composition, and is also relevant with distance, the geometry (length, sectional area etc.) of water resistance carrier and the temperature of water etc. of two lead-in wires.Aqueous water resistance has the connection in series-parallel characteristic of common solid-state resistance in circuit, but also has the flow behavior that common solid-state resistance does not have; The flowability of utilizing aqueous water resistance to have both can obtain being similar to the mobile liquid water resistance of constant-resistance value, also can obtain to become the mobile liquid water resistance of resistance.
Whether be divided into circulating water resistor and non-current water resistor again according to carrier inside water power blocking solution with the convection current of outside water power blocking solution, as: the import and export water pipe made from a solid insulator of the same size, under the constant situation of all conditions (as flow and flow velocity, temperature, electrolytical composition and the concentration etc. of water power blocking solution), the water power blocking solution is continuously flowed into from the water pipe import, flow out continuously from pipe outlet, such water resistance (device) but belong to circulating water resistance (device) class, genus non-current water resistance (device) except that this type of.
When the geometry of water resistance carrier and length, sectional area etc. regularly, under the constant situation of all conditions (as flow and flow velocity, temperature, electrolytical composition and the concentration etc. of water power blocking solution), the water power blocking solution is continuously flowed into from the water pipe import, flow out continuously from pipe outlet, switch at the import and export two ends of water pipe when measuring the aqueous water resistance value as a result that its value is similar to the constant-resistance value, the water resistor of this moment is the circulating water resistor of constant resistance.
If will obtain to become the circulating water resistance (device) of resistance, as long as one of its inside and outside the factor of water liquid by the change water resistance and condition (as the factors such as flow, flow velocity, temperature, electrolytical composition and concentration of water) are just can obtain.
Describe the present invention in detail below in conjunction with drawings and Examples and use the device that the circulating water resistor carries out online insulation property detection.
Shown in Figure 5, be to use the structured flowchart that the circulating water resistor carries out a kind of embodiment of the device that online insulation detects, it comprises: water-cooling groove 4, the water tank 6 of band water pump, circulating water resistor 7 and 8, high-tension transformer 10, voltage regulator 9, control circuit, current detecting and alarm protecting apparatus 12, wherein water-cooling groove 4 is connected with the water tank 6 of band water pump with 8 by circulating water resistor 7, and the circulating water resistor is connected high-voltage conducting wires (high-voltage probe) 11 with the link of water-cooling groove, and connect the output of high-tension transformers (because water-cooling groove is that metal material is made by this high-voltage conducting wires (high-voltage probe) 11, high-voltage conducting wires shown in the figure (high-voltage probe) is connected the bottom of water-cooling groove, effect is equal to the link that is connected water resistor and water-cooling groove), the input of high-tension transformer connects the output of voltage regulator, and the outside power supply that provides is provided the input of voltage regulator; Current detecting and alarm protecting apparatus 12 are connected with circuit between voltage regulator and the high-tension transformer; This device also is provided with control circuit, and it is connected with voltage regulator by the pressure regulation drive circuit, and control circuit is connected with current detecting and alarm protecting apparatus.Control circuit and with the connecting circuit of miscellaneous part be known current techique, so not shown among the figure to control circuit.In addition, this device also can connect remote data-interface 13, and the data that online insulation detects are passed through computer network.
The each several part function of checkout gear is as follows: water-cooling groove 4, after the insulated wire 5 of online production is sintered, enter the cooling of lowering the temperature in the cold water wherein, and detect with being with high-tension aqueous medium that insulated wire is carried out online insulation simultaneously; The water tank 6 of band water pump, it provides cooling water by water pump to water-cooling groove, reclaims water of radiation, and with its cooling, recycles; The circulating water resistor, connect water tank and water-cooling groove, it carries out high voltage to the water resistance of equipotential high voltage in the water-cooling groove by high value and isolates, comprise into water resistor 7 and go out water resistor 8, water in the water tank 6 enters water-cooling groove by water inlet resistor 7, water in the water-cooling groove 4 returns water tank by going out water resistor 8, and water inlet resistor 7, the link that goes out water resistor 8 and water tank 6 are provided with earth connection, for guaranteeing safety, with the ground wire reliable ground, the Inlet and outlet water that can guarantee water tank 6 is a safe water; Voltage regulator 9 is connected by switch with the input of high-tension transformer, and it can be according to the insulating requirements of test product, by the high voltage that panel input button operation is artificially regulated and the control high-tension transformer is exported of control circuit; High-tension transformer 10, its output output provides online insulation to detect needed high-tension electricity; High-voltage conducting wires (high-voltage probe) 11, its high voltage equipotential with high-tension transformer 10 outputs is delivered in the water-cooling groove water liquid; Current detecting and alarm protecting apparatus 12, the leakage current in the testing circuit is in case exist its insulation resistance of insulated wire after being sintered to fail to reach specification requirement, leakage current surpasses set point, then send alarm signal, and disconnect the power supply of whole device, up to artificially it being recovered; Remote data-interface 13, it can send expert office to handle by computer network the data that online insulation detects; As preserve printing etc.
Fig. 6 is the structural representation of water-cooling groove 4, and described water-cooling groove 4 is double-deck grooves that comprise intake chamber 14 and effluent trough 15 of being made by metal material, links to each other by metal between two-layer, and its water inlet 16 connects water inlet resistors, and delivery port 17 connects water resistor.Arrow indicates the direction of Inlet and outlet water among the figure.Can make intake chamber be higher than effluent trough, help boiler water circulation like this.
Described water inlet resistor 7 and what go out that water resistor 8 adopts is circulating water resistor provided by the invention.Its geometry can be as required, adopts Fig. 1 certain shape in Fig. 4, also can adopt other shapes.Its resistance can be set in advance, and definite method of resistance is carried out according to the aforementioned circulating water method of resistor that provides.In the present embodiment, its resistance can be able to be set at more than 10 megaohms.
The height of described water tank is usually less than the height of described water-cooling groove, and the water that helps in the water-cooling groove returns water tank naturally by return pipe.If the interpolation suction pump, the height that also can make water tank usually above or equal the height of described water-cooling groove, just increase equipment cost.
The water of water tank and water-cooling groove is the water power blocking solution that is made into by the NaCl of 0.01%-30% (or other nontoxic and equipment, product, personnel and environment are not had a soluble salt of harm).
The circulating water resistor that adopts in the above-mentioned execution mode is similar to constant-resistance value circulating water resistor, and its main circuit principle as shown in Figure 7.
Among Fig. 7: T1---voltage regulator T2---current transformer (or using other current sensing means) T3---high-tension transformer R0---current-limiting resistance R1---water inlet resistor (equivalence) resistance R 2---goes out the insulation resistance K----controlled switch of the online test product of water resistor (equivalence) resistance R 3---
According to main circuit schematic diagram 7 as can be known, when K gets electric closure, voltage regulator T1 is transferred to required voltage, high-tension transformer T3 rises to voltage the rated power frequency withstand voltage value of online test product standard code thereupon, under the conditions such as normal current and environment, water inlet resistor (equivalence) resistance value R1, the insulating resistance value R3 that goes out water resistor (equivalence) resistance value R2 and online test product is changeless substantially, that is: pass through R1, the electric current I 1 of R2, the Leakage Current I3 of I2 and R3 also is changeless substantially, output current I0=I1+I2+I3 is considered as constant, and input current Ii also is a constant.The output signal of current transformer T2 is normally exported.When quality problems appear in the insulation of the somewhere of online test product; this locates the very little of its insulating resistance value R3 change; the leakage current I3 that flows through dielectric becomes big; it will cause input current Ii to amplify; the output signal of current transformer T2 is also amplified; cause controlled switch K automatic disconnection immediately, and shut down, report to the police, thereby the online insulation that realizes the electric wire product detects.
It more than is the water resistor parallel circuits.Wherein, output current I0 also can be changed into the direct current mode and exports.Current sensing means also can be set the high pressure output current loop of main circuit is detected the control that realizes K switch, reach the effect of shutting down and reporting to the police equally, realize that the online insulation of electric wire product detects.
The course of work of above-mentioned online insulation detection device is as follows: after online electric wire goods line is spent above high temperature sintering by 300, after other operation processing, usually be sent to the water-cooling groove cooling and the detection of insulating at last, water pump in the water tank is started working simultaneously, but the cooling water of water tank is sent in the water-cooling groove by its water inlet resistor according to water power blocking solution flow behavior, the cooling processing of lowering the temperature of the insulated wire behind the high temperature sintering; Utilize the height of water of water-cooling groove and water tank, the water of water-cooling groove is got back in the water tank by going out water resistor; Isolate because the water-in and water-out resistor carries out high voltage to the water resistance of equipotential high voltage in the water-cooling groove by high value, and the link of water-in and water-out resistor and water tank is provided with earth connection and reliable ground, the water that can guarantee water tank is safe water.In the specific operation process, can start working a period of time at water pump, after 2 seconds, specification requirement difference according to its insulation resistance of different product, the regulation voltage controller, the output voltage of voltage controller is given the input of high-tension transformer, produces the required high voltage of detection test product by the high-tension transformer transformation at the output of high-tension transformer, and connect the water-cooled metal groove by high-voltage probe, make that the water power blocking solution is in the high pressure equipotential in the groove; High-tension scope can be adjusted between 0-50KV according to the requirement of withstand voltage of test product.Preestablish the maximum of the leakage current that allows to flow through dielectric; it is alarm current; detect by current detecting equipment; when leakage current surpasses setting; according to circuit diagram shown in Figure 7; electric current in the circuit of former limit will amplify and surpass set point with many times electric current; current detecting equipment detects leakage current and surpasses set point; alarm protecting apparatus carries out sound and/or red alarm; and cut off the general supply of all working equipment immediately, only in the artificial function of determining that fault could normal restorer after getting rid of.This on-line measuring device also is provided with remote data-interface function, the data that online insulation detects can be sent expert office carry out online in real time by computer network and handle; Also can preserve operations such as printing to data.
In the concrete testing process, when electric wire goods to be detected being immersed in the water liquid of water-cooling groove, should be with the exposed end good earth of tested wire cable goods.
Control circuit and current detecting and alarm protecting apparatus etc. that above-mentioned online insulation detection device is used all are universal circuit and equipment; belong to known technology; adopt the general purpose control circuit board as control circuit; current detecting and warning device can adopt the AI601 type high-performance current/voltage/power measurement instruments on the market; be conspicuous to those skilled in the art, be not described in detail at this.
As another kind of embodiment, the online insulation detection device that the present invention can provide another kind to utilize the circulating water resistor, it realizes that by the series circuit of water resistor the insulation property of electric wire product detect, its circuit diagram is as shown in Figure 8.
Among Fig. 8: the insulation resistance K----controlled switch of water (equivalence) the resistance R 2---test product in T1---voltage regulator T2---current transformer (or using other current sensing means) the T3---high-tension transformer R0---current-limiting resistance R1---pond
As shown in Figure 8, this circuit is the water resistance series circuit, can be applicable to the detection of insulating in the pond of filling the water power blocking solution of the whole sinking of Manufactured electric wire or cable product.R1 is very little under the normal power-up situation, and the insulation resistance R2 of test product is very big, and the leakage current I0 that flows through dielectric is very little.The output signal of current transformer T2 (or using other current sensing means) is normally exported.When quality problems appear in the insulation of the somewhere of test product; this locates the very little of its insulating resistance value R2 change; the leakage current I0 that flows through dielectric becomes big; it will cause input current Ii to amplify; the output signal of current transformer T2 is also amplified; cause controlled switch K automatic disconnection immediately, and shut down, report to the police, thereby realize electric wire or the whole resistance test of cable product.
Current sensing means also can be set the high pressure output current loop of main circuit is detected the control that realizes K switch, reach the effect of shutting down and reporting to the police equally, realize that the online insulation of electric wire product detects.
Its operation of checkout gear of the present invention can be undertaken by the guidance panel that is connected with control circuit.Fig. 9 is the guidance panel schematic diagram of a kind of embodiment of on-line measuring device, among Fig. 9:
High pressure display instrument: show current voltage, unit: KV
The electric leakage display instrument: show current primary leakage electric current, the mA of unit when being converted to secondary current, gets final product divided by 45.
Start: by this button, test starting.
Stop: by this button, test stops.
Boost: by this button, output voltage rises.
Step-down: by this button, output voltage descends.
Reset:, eliminate and report to the police by this button.
Suddenly stop: by this button, all outputs stop, and other button is invalid.
Alarming layer lamp 18: device stops or blinking red lamp when reporting to the police, green light flicker during operate as normal, and leakage current and set point exceed certain limit but do not reach when reporting to the police, and amber light glimmers.
Rotation alarm lamp 19: equipment breaks down or leakage current when surpassing higher limit or protective cover and opening, the action of rotation alarm lamp, and stop all outputs.
Its method of operation is as follows:
Check the water route.When sending electricity, go out pump working, regulate the discharge of water intaking valve, owe the water conservancy project work, during outage, close water intaking valve, in case leaked water in case go out water pump.
During by ' shutdown ' button, no high pressure in the blinking red lamp, this time slot.
During by ' startup ' button, the equipment operate as normal, the green light flicker, the groove inner high voltage is an instrument show value (unit: KV).
As when occurring reporting to the police, the revolving light action, no high pressure in the blinking red lamp, this time slot, and send alarm sound; By ' resetting ' button, report to the police and eliminate.
According to the technological requirement of test product, by the output voltage values of ' boosting ' or ' step-down ' button conditioning equipment.
The setting of alarm current: every kind of test product all has different alarm current values, and concrete establishing method is as follows:
Voltage is adjusted to desirable value;
Test product is in tank the time, and current value A1 this moment is write down in start;
Alarm current is made as ' A1+10 ', promptly on original basis, adds 10.
Circulating water resistor of the present invention and use the online insulation detection device of this resistor, by the ingenious high water resistant resistor (circulating water resistor) that designed, make the isolator of water by the high water resistant resistor of water-cooling groove flow back into to become again behind the water tank water that people and equipment can be used safely.The present invention has changed traditional granule steel ball and insulated wire surface used and has contacted, and is the defective that medium can only carry out the online detection of minor insulation performance to the mode of insulated wire discharge with the air; And this equipment adopts the aqueous water resistor in parallel with the insulation resistance of insulated wire and utilize aqueous water that the surperficial omnibearing penetrating power of test product has been finished the online detection of insulation property of insulated wire, has remedied the detection defective of original technology.It is that water cooling equipment and online insulation checkout equipment are integrated effectively with original two complete equipments, has saved the useful space of work-yard.And this equipment has remote data-interface function, is fit to online modern production field management.In a word, this equipment unique design theory and method are industry initiative, and it has brought huge social benefit and economic benefit.
More than specific embodiments of the invention are described and illustrate it is exemplary that these embodiment should be considered to it, and be not used in and limit the invention, the present invention should make an explanation according to appended claim.
Claims (10)
1. circulating water resistor, it is characterized in that: described circulating water resistor comprise make by insulating material, certain geometric shape is arranged and water inlet is arranged and the water resistance carrier of delivery port, and the water power blocking solution flows to, is arranged in the water power blocking solution of carrier continuously from the carrier water inlet when delivery port flows out continuously; Described water power blocking solution is the electrolyte aqueous solution of the water-soluble formation of a certain proportion of electrolyte.
2. circulating water resistor according to claim 1 is characterized in that: described water resistance carrier be shaped as column type, or rectangular build, or U type, or grooved, or spiral cast.
3. circulating water resistor according to claim 1 is characterized in that: the concentration of described electrolyte aqueous solution is 0.01%-30%, and electrolyte is a soluble salt.
4. circulating water resistor according to claim 1, it is characterized in that: the resistance of described circulating water resistor be the water power blocking solution from water resistance carrier water inlet flow to continuously, when delivery port flows out continuously, draw the inner lead that is connected with the water resistance liquid phase at certain two position of its carrier, the lead measured resistance value that links to each other with external circuit.
5. circulating water resistor according to claim 4, it is characterized in that: when the geometry of carrier and flow through water inlet and the flow of the water power blocking solution of delivery port, flow velocity, temperature, electrolytical composition and concentration when constant, the resistance of water resistor is the constant-resistance value; When one or more factors changed in flow, flow velocity, temperature, electrolytical composition and the concentration of water power blocking solution, the resistance of water resistor was for becoming resistance.
6. one kind is utilized circulating water resistance to carry out the device that online insulation detects, it is characterized in that: this device comprises water-cooling groove, the water tank of band water pump, the circulating water resistor, high-tension transformer, voltage regulator, control circuit, current detecting and alarm protecting apparatus, wherein water-cooling groove is connected by the water tank of circulating water resistor with the band water pump, and the circulating water resistor is connected high-voltage conducting wires (high-voltage probe) with the link of water-cooling groove, and connect the output of high-tension transformer by this high-voltage conducting wires (high-voltage probe), the input of high-tension transformer connects the output of voltage regulator, and the outside power supply that provides is provided the input of voltage regulator; Current detecting and alarm protecting apparatus are connected with circuit between voltage regulator and the high-tension transformer; Control circuit is connected with voltage regulator by the pressure regulation drive circuit, and control circuit is connected with current detecting and alarm protecting apparatus.
7. device according to claim 6 is characterized in that: the link of described circulating water resistor and water tank is provided with earth connection.
8. according to claim 6 or 7 described devices, it is characterized in that: described circulating water resistor comprises into the water resistor and goes out water resistor, and the water in the water tank enters water-cooling groove by the water inlet resistor, and the water in the water-cooling groove returns water tank by going out water resistor.
9. according to claim 6 or 7 described devices, it is characterized in that: described water-cooling groove is a double-deck groove of being made, comprised intake chamber and effluent trough by metal material, links to each other by metal between two-layer.
10. according to claim 6 or 7 described devices, it is characterized in that: the height of described water tank is lower than the height of described water-cooling groove.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2009100761800A CN101777405B (en) | 2009-01-13 | 2009-01-13 | flowing water resistor and device for carrying out on-line insulation detection by using the same |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2009100761800A CN101777405B (en) | 2009-01-13 | 2009-01-13 | flowing water resistor and device for carrying out on-line insulation detection by using the same |
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| CN101777405A true CN101777405A (en) | 2010-07-14 |
| CN101777405B CN101777405B (en) | 2011-09-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2009100761800A Expired - Fee Related CN101777405B (en) | 2009-01-13 | 2009-01-13 | flowing water resistor and device for carrying out on-line insulation detection by using the same |
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| CN102798779A (en) * | 2012-08-06 | 2012-11-28 | 北京长峰广播通讯设备有限责任公司 | Water load body used for power source debugging, and water load body system |
| CN105467221A (en) * | 2016-01-18 | 2016-04-06 | 中国工程物理研究院流体物理研究所 | On-line measurable adjustable water resistor suitable for Blumlein pulse forming line, and method |
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| CN112652432B (en) * | 2020-12-21 | 2021-11-02 | 华中科技大学 | Forced circulation cooling pipeline type water resistance device |
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