阅读说明：本技术 一种用于变压器油的过滤控制系统及其控制方法 (Filtering control system for transformer oil and control method thereof ) 是由 范琪 于 2021-08-13 设计创作，主要内容包括：本发明公开了一种用于变压器油的过滤控制系统及其控制方法,包括多个过滤箱、一个分类箱体、存放箱体和控制器,所述过滤箱的内部通过多个滤网将过滤箱内部纵向截开,组成过滤格,并且滤网由左往右,滤网的孔径依次减小,每个过滤格的上方装有液位检测传感器,最右侧的过滤格上装有管道,该管道与存放箱体相连,每个过滤格的上端装有伸缩装置,所述分类箱体的底部通过多根管道与每个过滤箱左侧过滤格相连,该管道上具有电磁阀,所述存放箱体通过管道与过滤箱最右侧的过滤格的底部相连,该控制系统能够将变压器油阶梯式结构过滤,将变压器油达到变压器所需要求。(The invention discloses a filtering control system for transformer oil and a control method thereof, which comprises a plurality of filter boxes, a classification box body, a storage box body and a controller, the interior of the filter box is longitudinally cut off through a plurality of filter screens to form filter grids, the filter screen is turned from left to right, the aperture of the filter screen is reduced in sequence, a liquid level detection sensor is arranged above each filter lattice, a pipeline is arranged on the rightmost filter lattice, the pipeline is connected with the storage box body, the upper end of each filter lattice is provided with a telescopic device, the bottom of the classification box body is connected with the left filter lattice of each filter box through a plurality of pipelines, the pipeline is provided with an electromagnetic valve, the storage box body is connected with the bottom of the rightmost filter lattice of the filter box through the pipeline, the control system can filter the stepped structure of the transformer oil, and the transformer oil can meet the requirements of the transformer.)

1. A filtering control system for transformer oil is characterized by comprising a plurality of filtering boxes, a classification box body, a storage box body and a controller, wherein the inside of each filtering box is longitudinally cut off from the inside of the filtering box through a plurality of filtering nets to form filtering grids, the filtering nets are turned from left to right, the pore diameters of the filtering nets are sequentially reduced, a liquid level detection sensor is arranged above each filtering grid, a pipeline is arranged on the rightmost filtering grid and is connected with the storage box body, a telescopic device is arranged at the upper end of each filtering grid, foam is arranged on a telescopic rod of the telescopic device, the foam is placed in the filtering nets under the action of the telescopic device, so that the liquid level of the transformer oil in the filtering grids is increased, the pressure at the bottom of the transformer oil is increased, the flow of the transformer oil filtered by the filtering nets is increased, the bottom of the classification box body is connected with the filtering grid on the left side of each filtering box body through a plurality of pipelines, the pipeline is provided with an electromagnetic valve, and the storage box body is connected with the bottom of the rightmost filter lattice of the filter box through the pipeline.

2. The filtration control system for transformer oil as claimed in claim 1, wherein the controller comprises an operation panel, a control chip, a digital output module, a signal detection module and a signal output module, the control chip is connected with the operation panel, the digital output module, the signal detection module and the signal output module, the operation panel has an operation interface, has operation buttons and can set parameters, the digital output module is connected with the solenoid valve, the signal detection module is connected with the liquid level detection sensor, and the signal output module is connected with the telescopic device.

3. The filtration control system for transformer oil as claimed in claim 2, wherein the liquid level detection sensor comprises a detection port capable of detecting the level value in each filter cell and a signal transmission port connected with the signal detection module of the controller through a connection line, so that the controller can detect the parameter value in the liquid level sensor.

4. The system of claim 2, wherein the telescopic device comprises an electromagnetic telescopic device and a telescopic rod, wherein the telescopic rod is installed in the electromagnetic telescopic device, the electromagnetic telescopic device has a power input end and a control end, the power input end is connected to a power supply through a connecting wire, and the control end is connected to the digital output module of the controller through a connecting wire, so that the controller can automatically operate the telescopic rod of the telescopic device to extend.

5. The filtration control system for transformer oil as claimed in claim 2, wherein the solenoid valve comprises a valve body and a solenoid coil, wherein the solenoid coil is mounted on the valve body, and operates the valve body by turning on the solenoid coil, and the solenoid coil is connected with the digital output module of the controller through a connection line, so that the controller can automatically operate the solenoid valve.

6. The control method of a filtration control system for transformer oil according to any one of claims 1 to 5, characterized in that:

the method comprises the following steps: setting a liquid level range value of the transformer oil in each filter grid in each filter box in the controller, and placing the transformer oil in the classification box body;

step two: running each electromagnetic valve of the pipeline at the bottom of the classification box body through a controller to enable the transformer oil of the classification box body to be injected into the leftmost filter cell in the filter box, and placing the transformer oil in the leftmost filter cell in the filter box;

step three: when the transformer oil in the leftmost filter cell reaches the upper limit value of the liquid level range value set by the controller, the controller closes the electromagnetic valve at the bottom of the classification box body, so that the transformer oil in the classification box body stops being injected into the filter box;

step four: after the transformer oil in the leftmost filtering grid is filtered by the filter screen, the overall liquid level is reduced, the controller operates the telescopic device at the position, so that foam at the top of the telescopic device is placed in the transformer oil, the liquid level of the transformer oil is raised, and the upper limit value of the liquid level of the filtering grid set by the controller is reached;

step five: after the transformer oil in the leftmost filter cell of the filter tank reaches the lower limit value of the liquid level range value set by the controller, the controller opens the electromagnetic valve at the bottom of the classification tank body so that the transformer oil in the classification tank body is injected into the filter tank

Step six: after the transformer oil passes through the second filter cell, repeating the third step and the fourth step until the transformer oil reaches the rightmost filter cell of the filter box;

step seven: after the transformer oil reaches the rightmost filter lattice of the filter box, the filtered transformer oil is injected into the storage box body through the bottom pipeline.

Technical Field

The invention belongs to the technical field of electric power, and relates to a filtering control system for transformer oil and a control method thereof.

Background

A transformer is a device that changes an alternating voltage using the principle of electromagnetic induction, and main components are a primary coil, a secondary coil, and an iron core (magnetic core). The main functions are voltage transformation, current transformation, impedance transformation, isolation, voltage stabilization (magnetic saturation transformer) and the like. The transformer can be divided into a power transformer and a special transformer (an electric furnace transformer, a rectification transformer, a power frequency test transformer, a voltage regulator, a mining transformer, an audio transformer, a medium-frequency transformer, a high-frequency transformer, an impact transformer, an instrument transformer, an electronic transformer, a reactor, a mutual inductor and the like) according to the application.

Because the transformer during operation can produce higher temperature, the inside transformer oil that all uses of present most transformers cools off, but at long-time during operation, impurity in the inside transformer oil of transformer, go down for a long time, not only can cause the cooling effect variation, serious can cause the inside power equipment of transformer to damage, so need filter transformer oil.

Disclosure of Invention

In order to solve the problems, the invention provides a filtering control system for transformer oil and a control method thereof.

The invention provides a filtering control system for transformer oil, which comprises a plurality of filtering boxes, a classification box body, a storage box body and a controller, wherein the interior of each filtering box is longitudinally cut off through a plurality of filtering nets to form filtering grids, the filtering nets are turned from left to right, the pore diameters of the filtering nets are sequentially reduced, a liquid level detection sensor is arranged above each filtering grid, a pipeline is arranged on the rightmost filtering grid and is connected with the storage box body, a telescopic device is arranged at the upper end of each filtering grid, foam is arranged on a telescopic rod of the telescopic device, the foam is placed in the filtering nets under the action of the telescopic device, so that the liquid level of the transformer oil in the filtering grids is raised, the pressure at the bottom of the transformer oil is increased, the flow of the transformer oil filtered through the filtering nets is increased, the bottom of the classification box body is connected with the filtering grids on the left side of each filtering box through a plurality of pipelines, the pipeline is provided with an electromagnetic valve, and the storage box body is connected with the bottom of the rightmost filter lattice of the filter box through the pipeline.

Further the controller includes operating panel, control chip, digital output module, signal detection module and signal output module, control chip links to each other with operating panel, digital output module, signal detection module and signal output module, operating panel has operation interface, has operating button and can set up the parameter, digital output module links to each other with the solenoid valve, signal detection module links to each other with the level detection sensor, signal output module links to each other with the telescoping device.

The liquid level detection sensor further comprises a detection port and a signal transmission port, the detection port can detect the liquid level value in each filter cell, and the signal transmission port is connected with a signal detection module of the controller through a connecting wire, so that the controller can detect the parameter value in the liquid level sensor.

Further the telescoping device includes electromagnetic telescoping device and telescopic link, and wherein the telescopic link is installed in the electromagnetic telescoping device, and this electromagnetic telescoping device has power input end and control end, power input end passes through the connecting wire and inserts the power, and the control end passes through the connecting wire and links to each other with the digital output module of controller, makes the telescopic link that the controller can the automatic operation telescoping device stretch out.

The electromagnetic valve further comprises a valve body and an electromagnetic coil, wherein the electromagnetic coil is installed on the valve body, the valve body is operated by conducting the electromagnetic coil, and the electromagnetic coil is connected with the digital quantity output module of the controller through a connecting wire, so that the controller can automatically operate the electromagnetic valve.

The control method for the filtering control system of the transformer oil comprises the following steps:

the method comprises the following steps: setting a liquid level range value of the transformer oil in each filter grid in each filter box in the controller, and placing the transformer oil in the classification box body;

step two: running each electromagnetic valve of the pipeline at the bottom of the classification box body through a controller to enable the transformer oil of the classification box body to be injected into the leftmost filter cell in the filter box, and placing the transformer oil in the leftmost filter cell in the filter box;

step three: when the transformer oil in the leftmost filter cell reaches the upper limit value of the liquid level range value set by the controller, the controller closes the electromagnetic valve at the bottom of the classification box body, so that the transformer oil in the classification box body stops being injected into the filter box;

step four: after the transformer oil in the leftmost filtering grid is filtered by the filter screen, the overall liquid level is reduced, the controller operates the telescopic device at the position, so that foam at the top of the telescopic device is placed in the transformer oil, the liquid level of the transformer oil is raised, and the upper limit value of the liquid level of the filtering grid set by the controller is reached;

step five: after the transformer oil in the leftmost filter cell of the filter tank reaches the lower limit value of the liquid level range value set by the controller, the controller opens the electromagnetic valve at the bottom of the classification tank body so that the transformer oil in the classification tank body is injected into the filter tank

Step six: after the transformer oil passes through the second filter cell, repeating the third step and the fourth step until the transformer oil reaches the rightmost filter cell of the filter box;

step seven: after the transformer oil reaches the rightmost filter lattice of the filter box, the filtered transformer oil is injected into the storage box body through the bottom pipeline.

Drawings

FIG. 1 is a schematic diagram of the overall structure of a filtering control system for transformer oil according to the invention;

FIG. 2 is a schematic diagram of a filter box in the filter control system for transformer oil according to the present invention;

FIG. 3 is a schematic diagram of a control structure of a filtering control system for transformer oil according to the present invention;

fig. 4 is a schematic diagram of an embodiment of a filtration control system for transformer oil.

In the figure: 1. a filter box; 2. classifying the box body; 3. a storage box body; 4. a controller; 5. filtering with a screen; 6. a liquid level detection sensor; 7. a telescoping device; 8. foaming; 9. an electromagnetic valve.

Detailed Description

The following describes in detail an embodiment of the present invention, which is a filtration control system for transformer oil and a control method thereof, with reference to the accompanying drawings.

As shown in fig. 1, the invention provides a filtering control system for transformer oil, which comprises a plurality of filtering boxes 1, a classification box 2, a storage box 3 and a controller 4, as shown in fig. 2, the interior of the filtering box 1 is longitudinally cut off by a plurality of filtering nets 5 to form filtering grids, the filtering nets 5 sequentially decrease from left to right, a liquid level detection sensor 6 is arranged above each filtering grid, a pipeline is arranged on the rightmost filtering grid, the pipeline is connected with the storage box 3, an expansion device 7 is arranged at the upper end of each filtering grid, a foam 8 is arranged on an expansion link of the expansion device 7, the foam 8 is placed in the filtering nets 5 under the action of the expansion device 7, so that the liquid level of the transformer oil in the filtering grids is raised, the pressure at the bottom of the transformer oil is increased, and the flow rate of the transformer oil filtered by the filtering nets 5 is increased, the bottom of the classification box body 2 is connected with the left side filter lattice of each filter box 1 through a plurality of pipelines, an electromagnetic valve 9 is arranged on the pipeline, and the storage box body 3 is connected with the bottom of the rightmost filter lattice of the filter box 1 through a pipeline.

As shown in fig. 3, the controller 4 includes an operation panel, a control chip, a digital output module, a signal detection module and a signal output module, the control chip is connected to the operation panel, the digital output module, the signal detection module and the signal output module, the operation panel has an operation interface, has an operation button and can set parameters, the digital output module is connected to the electromagnetic valve 9, the signal detection module is connected to the liquid level detection sensor 6, and the signal output module is connected to the expansion device 7.

According to the above, the liquid level detection sensor 6 includes a detection port and a signal transmission port, the detection port can detect the level value in each filter cell, and the signal transmission port is connected to the signal detection module of the controller 4 through a connection line, so that the controller 4 can detect the parameter value in the liquid level sensor.

According to the above, wherein the telescoping device 7 includes the electromagnetic telescoping device 7 and the telescopic link, wherein the telescopic link is installed in the electromagnetic telescoping device 7, and this electromagnetic telescoping device 7 has power input end and control end, power input end passes through the connecting wire and inserts the power, and the control end passes through the connecting wire and links to each other with the digital output module of controller 4, makes controller 4 can the automatic operation telescoping device 7 the telescopic link stretch out.

According to the above, the electromagnetic valve 9 includes a valve body and an electromagnetic coil, wherein the electromagnetic coil is installed on the valve body, the valve body is operated by turning on the electromagnetic coil, and the electromagnetic coil is connected with the digital output module of the controller 4 through a connecting wire, so that the controller 4 can automatically operate the electromagnetic valve.

The control method for the filtering control system of the transformer oil comprises the following steps:

the method comprises the following steps: setting a liquid level range value of the transformer oil in each filter cell in each filter tank 1 in the controller 4, and placing the transformer oil in the classification tank body 2;

step two: the electromagnetic valves 9 of the pipelines at the bottom of the classification box body 2 are operated by the controller 4, so that the transformer oil of the classification box body 2 is injected into the leftmost filter cell in the filter box 1, and the transformer oil is placed in the leftmost filter cell in the filter box 1;

step three: when the transformer oil in the filter lattice on the leftmost side reaches the upper limit value of the liquid level range value set by the controller 4, the controller 4 closes the electromagnetic valve 9 at the bottom of the classification box body 2, so that the transformer oil in the classification box body 2 stops being injected into the filter box 1;

step four: after the transformer oil in the leftmost filtering grid is filtered by the filter screen 5, the overall liquid level is reduced, the controller 4 operates the telescopic device 7 at the position, so that the foam 8 at the top of the telescopic device 7 is placed in the transformer oil, the liquid level of the transformer oil is raised, and the upper limit value of the liquid level of the filtering grid set by the controller 4 is reached;

step five: after the transformer oil in the leftmost filter cell of the filter tank 1 reaches the lower limit value of the liquid level range value set by the controller 4, the controller 4 opens the electromagnetic valve 9 at the bottom of the classification tank body 2, so that the transformer oil in the classification tank body 2 is injected into the filter tank 1

Step six: after the transformer oil passes through the second filter cell, repeating the third step and the fourth step until the transformer oil reaches the rightmost filter cell of the filter box 1;

step seven: after the transformer oil reaches the rightmost filter lattice of the filter tank 1, the filtered transformer oil is injected into the storage tank body 3 through a bottom pipeline.

The controller 4 conveys the transformer oil in the classification box body 2 to each filter tank 1 through a pipeline, and the transformer oil is filtered through the filter tanks 1.

As shown in fig. 4, the transformer oil is explained in detail below according to an embodiment of three filter compartments.

The three filter lattices are respectively a first filter lattice, a second filter lattice and a third filter lattice from left to right, and when a liquid level range value is set, the parameter values from left to right are integrally reduced. For example, the liquid level range of the first filter cell is 50 to 100, the liquid level range of the second filter cell is 50 to 80, and the third filter cell may not have a parameter value. The solenoid valve 9 of this rose box 1 of controller 4 operation and 2 pipe connections of categorised box makes in the transformer oil injection first filter lattice in categorised box 2, because there is impurity in the transformer oil, so transformer oil can slowly pass through filter screen 5 to make transformer oil pile up in first filter lattice, the transformer oil up to in the first filter lattice reaches 100 liquid level parameter values, controller 4 shut down solenoid valve 9, make transformer oil can't pour into first filter lattice into. After the transformer oil passes through the filter screen 5, the whole liquid level of the transformer oil in the first filter lattice is reduced, the controller 4 operates the expansion device 7 in the first filter lattice, the foam 8 of the expansion device 7 is placed in the transformer oil, and the liquid level in the first filter lattice is kept at a 100 liquid level parameter value. When the first filter lattice is lower than the liquid level of 50, the controller 4 resets the telescopic device 7, opens the electromagnetic valve 9 connected with the filter box 1 and the classification box body 2, and injects the transformer oil of the classification box body 2 into the first filter lattice. After the transformer oil is filtered, the liquid level in the first filter lattice is wholly reduced, the second filter lattice is raised, but because the demand for filtering the transformer oil, the liquid level of the transformer oil in the first filter lattice is always higher than the liquid level of the second transformer oil. Transformer oil filters check after the second, and whole liquid level is less than first filter check, is higher than the third filter check, and after the transformer oil liquid level that the second filtered check was higher than 80, the solenoid valve 9 that this rose box 1 was connected will be closed to controller 4, avoids the second to filter check liquid level too high, and transformer oil in the second filter check gets into the third filter check after meticulous filter screen 5. After the liquid level of the second filter grid is lower than 50, the controller 4 operates the telescopic device 7 where the second filter grid is located, so that the liquid level in the second filter grid is kept at 80. The third filter lattice is the last filter lattice, and the transformer oil that gets into this filter lattice need not to filter, directly passes through the pipeline, pours into and deposits in the box 3.

Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting the same. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.