CN210091879U - Transformer on-load tap-changer insulating oil live replacement and purification system - Google Patents
Transformer on-load tap-changer insulating oil live replacement and purification system Download PDFInfo
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- CN210091879U CN210091879U CN201921453828.7U CN201921453828U CN210091879U CN 210091879 U CN210091879 U CN 210091879U CN 201921453828 U CN201921453828 U CN 201921453828U CN 210091879 U CN210091879 U CN 210091879U
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Abstract
The utility model discloses a transformer on-load tap-changer insulating oil live replacement and purification system, which comprises an oil discharge component and an oil supplement component; the oil discharging assembly comprises an oil discharging pipe and a waste oil storage tank, and the oil supplementing assembly comprises a finished oil storage tank and a vacuum tank; an oil supply pipe is arranged between the output end of the product oil storage tank and the input end of the vacuum tank, the output end of the vacuum tank is connected with an oil supplementing pipe connected with an oil inlet of the switch oil conservator, an oil supplementing pump is arranged on the oil supplementing pipe, and a filtering mechanism for filtering oil is arranged on the oil supplementing pipe; the oil supplementing pump and the oil discharging pump are also connected with a controller. Insulating oil liquid needing to be replaced in the switch oil chamber can be quantitatively extracted when the oil discharge pump operates; store in the finished product oil storage tank of mend oily subassembly fluid accessible supply oil pipe input vacuum tank, again by vacuum tank with fluid through mend in oil pipe input switch conservator, still accessible filter mechanism filters purification to fluid when the oil supply, adopt the mode of uninterrupted power supply replacement fluid can improve fluid replacement efficiency.
Description
Technical Field
The utility model relates to an electric wire netting technical field, concretely relates to transformer on-load tap-changer insulating oil electrification replacement and clean system.
Background
An on-load tap changer is a switching device that provides a constant voltage to a transformer when the load changes. The basic principle is to realize the switching between taps in the transformer winding under the condition of ensuring that the load current is not interrupted, thereby changing the number of turns of the winding, namely the voltage ratio of the transformer, and finally realizing the purpose of voltage regulation.
After the transformer is operated, the on-load tap-changer is in a dynamic operation state, and the phenomena of electric arc and transition resistance heating are generated when the on-load tap-changer switches gears. Insulating oil in the on-load tap-changer needs arc extinguishing and heat dissipation, and the oil quality degradation speed is very fast. Therefore, it is necessary to discharge "dead oil" in the on-load tap changer in time.
The national electric power industry standard DL/T574-95 on-load tap changer operation maintenance guide rules stipulate: the on-load tap-changer is required to be uncovered for cleaning or oil filtering for 1 time every 1-2 years or when the tap change is 5000-10000 times or the breakdown voltage is lower than 25KV, and the tap-changer with frequent tap change operation in operation is recommended to adopt electrified oil filtering or install an online oil purifier. An electrified replacement and purification system for insulating oil of an on-load tap-changer of a transformer aims to solve the problem that oil product reduction cannot be effectively and immediately treated during the operation of the switch. There is no power failure opportunity if the insulating oil in the switch room is completely replaced. If on-line oil filtering is selected, because a large amount of particles accumulated in long-term operation cannot be immediately processed to be in a qualified state in a short time, the unqualified oil is recycled instead, and the probability of failure of the switch due to unqualified oil flow is increased.
SUMMERY OF THE UTILITY MODEL
Aiming at the defects in the prior art, the utility model aims to provide a transformer on-load tap-changer insulating oil live replacement and purification system, which can replace and purify the insulating oil in the on-load tap-changer with high efficiency; the specific technical scheme is as follows:
the live replacement and purification system for the insulating oil of the on-load tap-changer of the transformer comprises an oil discharge assembly and an oil supplement assembly; the oil drain assembly comprises an oil drain pipe and a waste oil storage tank, the input end of the oil drain pipe is communicated with an oil outlet of the switch oil chamber, the output end of the oil drain pipe is communicated with the input end of the waste oil storage tank, and an oil drain pump for pumping oil is arranged on the oil drain pipe; the oil supplementing assembly comprises a product oil storage tank and a vacuum tank; an oil supply pipe is arranged between the output end of the product oil storage tank and the input end of the vacuum tank, the output end of the vacuum tank is connected with an oil supplementing pipe connected with an oil inlet of the switch oil conservator, an oil supplementing pump is arranged on the oil supplementing pipe, and a filtering mechanism for filtering oil is arranged on the oil supplementing pipe; the oil supplementing pump and the oil discharging pump are also connected with a controller.
In the technical scheme: the live replacement and purification system for the insulating oil of the on-load tap-changer of the transformer can replace or purify the insulating oil under the condition of no power failure; the insulating oil is replaced by the oil discharging component and the oil supplementing component. Specifically, a waste oil storage tank of the oil drain assembly is connected to an oil outlet of the switch oil chamber through an oil drain pipe, and insulating oil needing to be replaced in the switch oil chamber can be quantitatively extracted when the oil drain pump operates; similarly, oil stored in a finished oil storage tank of the oil supplementing assembly can be input into a vacuum tank through an oil supply pipe, the vacuum tank can discharge bubbles and the like in the oil, the oil is input into a switch oil conservator through the oil supplementing pipe by the vacuum tank, and the oil can be filtered and purified through a filtering mechanism during oil supply so as to remove impurities and moisture; in the oil liquid replacement process, the oil discharge amount of the oil discharge pump and the oil supplement amount of the oil supplement pump can be controlled through the controller, and the automation degree of oil liquid replacement is improved. The mode of replacing oil without power interruption can improve the oil replacement efficiency, and the normal operation of the on-load tap-changer of the transformer is not influenced.
The preferable technical scheme is characterized in that the filtering mechanism comprises an impurity removal filter and a water removal filter which are connected in series on the oil supplementing pipe, and the impurity removal filter and the water removal filter are positioned between the oil supplementing pipe and the vacuum tank corresponding to the oil supplementing pump; and the impurity removal filter is close to one side of the oil replenishing pump, and a pressure sensor and a pressure gauge are arranged on the impurity removal filter.
The preferable technical scheme is characterized in that an oil drain pipe valve and an oil drain port valve are arranged on the oil drain pipe, the oil drain pipe valve is positioned between the oil drain pump and the input end of the oil drain pipe, and the oil drain port valve is positioned between the oil drain pump and the output end of the oil drain pipe.
The preferable technical scheme is characterized in that a communicating pipe is further connected between the oil drain pipe corresponding to the oil drain port valve and the oil drain pump in a branching mode, the communicating pipe is further communicated with one side of the output end of the oil supply pipe, and a communicating valve is arranged on the communicating pipe.
Preferably, the vacuum tank further includes an oil supply valve for supplying oil to the vacuum tank, the oil supply valve being provided on an input side of the oil supply pipe.
The preferable technical scheme is characterized in that a liquid level meter is arranged in the vacuum tank, and a liquid level switch is further arranged in the vacuum tank.
The preferable technical scheme is characterized in that the vacuum tank is connected with a vacuum pump, and the vacuum pump is connected with a vacuum switch.
The preferable technical scheme is characterized in that an oil outlet valve is arranged on one side of the output end of the oil supplementing pipe.
The optimized technical scheme is characterized in that an oil outlet of the switch oil chamber is connected with an oil discharge tee joint, an oil inlet of the switch oil conservator is connected with an oil supplementing tee joint, a first output port of the oil discharge tee joint is connected with an input end of an oil discharge pipe, and a first input port of the oil supplementing tee joint is connected with an output end of an oil supplementing pipe; and a second output port of the oil discharge tee joint is communicated with a second input port of the oil supplement tee joint.
The utility model has the advantages that: the transformer on-load tap-changer insulating oil live replacement and purification system realizes the replacement of insulating oil through the oil discharge component and the oil supplement component, and can also filter and purify oil through the filtering mechanism during oil supply so as to remove impurities and moisture; in the oil liquid replacement process, the oil discharge amount of the oil discharge pump and the oil supplement amount of the oil supplement pump can be controlled through the controller, and the automation degree of oil liquid replacement is improved. The utility model discloses rational in infrastructure, simple to operate adopt the mode of uninterrupted power supply replacement fluid can improve fluid replacement efficiency to do not influence the transformer and have the normal operating of tapping switch that the on-load tapping switch can extensively be applicable to in the tapping switch of electric wire netting transformer deploys the installation.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below. Throughout the drawings, like elements or portions are generally identified by like reference numerals. In the drawings, elements or portions are not necessarily drawn to scale.
Fig. 1 is a schematic structural diagram of an on-load tap changer insulating oil live replacement and purification system of a transformer according to an embodiment.
Reference numerals: the device comprises a waste oil storage tank 1, an oil drain pipe 2, an oil drain valve 3, an oil drain port valve 4, an oil drain pump 5, a finished oil storage tank 6, a vacuum tank 7, an oil supply pipe 8, an oil supply valve 9, a water removal filter 10, an impurity removal filter 11, an oil supplement pump 12, an oil supplement pipe 13, an oil outlet valve 14, a liquid level meter 15, a liquid level switch 16, a vacuum pump 17, a vacuum switch 18, a communicating pipe 19, a communicating valve 20, an oil drain tee 21, an oil supplement tee 22, a switch oil chamber 23 and a switch oil conservator 24.
Detailed Description
Here, it is to be noted that the functions, methods, and the like related to the present invention are only conventional adaptive applications of the related art. Therefore, the present invention is an improvement of the prior art, which substantially lies in the connection relationship between hardware, not in the functions and methods themselves, that is, the present invention relates to a few functions and methods, but does not include the improvements proposed in the functions and methods themselves. The present invention is described for better illustration of the function and method for better understanding of the present invention.
Example one
As shown in fig. 1, in the first embodiment, the utility model provides a transformer on-load tap-changer insulating oil is electrified to be replaced and clean system can be under the prerequisite of guaranteeing system's pipeline vacuum and system uninterrupted power supply, mends switch conservator 24 with qualified oil, takes out the oil of the deposit degradation of the inside bottom of switch grease chamber 23 again simultaneously, realizes the indoor insulating oil of online replacement switch. The device specifically comprises an oil discharging assembly and an oil supplementing assembly; the oil drain assembly comprises an oil drain pipe 2 and a waste oil storage tank 1, the input end of the oil drain pipe 2 is communicated with an oil outlet of the switch oil chamber 23, the output end of the oil drain pipe 2 is communicated with the input end of the waste oil storage tank 1, and an oil drain pump 5 for pumping oil is arranged on the oil drain pipe 2; a waste oil storage tank 1 of the oil drain assembly is connected to an oil outlet of the switch oil chamber 23 through an oil drain pipe 2, and insulating oil liquid of the switch oil chamber 23 needing to be replaced can be quantitatively extracted when the oil drain pump 5 operates.
As shown in fig. 1, the oil replenishment assembly includes a product oil storage tank 6 and a vacuum tank 7; an oil supply pipe 8 is arranged between the output end of the product oil storage tank 6 and the input end of the vacuum tank 7, the output end of the vacuum tank 7 is connected with an oil supplementing pipe 13 connected with an oil inlet of a switch oil conservator 24, an oil supplementing pump 12 is arranged on the oil supplementing pipe 13, and a filtering mechanism for filtering oil is arranged on the oil supplementing pipe 13; the oil supplementing pump 12 and the oil discharging pump 5 are also connected with a controller. Oil stored in a finished oil storage tank 6 of the oil supplementing assembly can be input into a vacuum tank 7 through an oil supply pipe 8, bubbles and the like in the oil can be discharged from the vacuum tank 7, the oil is input into a switch oil conservator 24 through an oil supplementing pipe 13 by the vacuum tank 7, and the oil can be filtered and purified through a filtering mechanism during oil supply so as to remove impurities and moisture; in the oil liquid replacement process, the oil discharge amount of the oil discharge pump 5 and the oil supplement amount of the oil supplement pump 12 can be controlled through a controller, and a PLC (programmable logic controller) is preferably selected by the controller so as to improve the automation degree of oil liquid replacement. The mode of replacing oil without power interruption can improve the oil replacement efficiency, and the normal operation of the on-load tap-changer of the transformer is not influenced.
As shown in fig. 1, when the oil is replaced, the oil needs to be filtered and purified to further improve the quality of the oil. In the embodiment, the filtering mechanism comprises an impurity removal filter 11 and a water removal filter 10 which are connected in series on an oil supplementing pipe 13, wherein the impurity removal filter 11 and the water removal filter 10 are positioned between an oil supplementing pump 12 and a vacuum tank 7 corresponding to the oil supplementing pipe 13; and the impurity removing filter 11 is close to one side of the oil replenishing pump 12, and the impurity removing filter 11 is provided with a pressure sensor and a pressure gauge. Finished product fluid can be successively through water filter and edulcoration filter 11, can fully filter moisture and impurity in the finished product fluid, improves fluid replacement quality, and pressure sensor can detect the pressure in the filter to show through the manometer, the operating personnel of being convenient for inspect.
As shown in fig. 1, when the waste oil in the switch oil chamber 23 is extracted, the oil path between the oil drain pipe 2 and the switch oil chamber 23 needs to be opened and closed as required, in this embodiment, an oil drain pipe 2 valve and an oil drain port valve 4 are arranged on the oil drain pipe 2, the oil drain pipe 2 valve is located between the oil drain pump 5 and the input end of the oil drain pipe 2, and the oil drain port valve 4 is located between the oil drain pump 5 and the output end of the oil drain pipe 2. The valve of the oil drain pipe 2 and the oil drain valve 4 can control the on-off of an oil drain circuit, and after the valve of the oil drain pipe 2 and the oil drain valve 4 are opened, the oil drain pump 5 can draw oil to be replaced in an oil chamber.
As shown in fig. 1, when oil is supplied to the switching conservator 24, the product oil is supplied into the vacuum tank 7 through the oil supply pipe 8, and the oil supply valve 9 for supplying oil to the vacuum tank 7 is provided on the input end side of the oil supply pipe 8. The oil supply valve 9 can control the on-off of an oil path between the product oil storage tank 6 and the vacuum tank 7, and after the oil supply valve 9 is opened, the product oil in the product oil storage tank 6 is automatically input into the vacuum tank 7 under the vacuum action.
As shown in fig. 1, in order to facilitate control of the amount of oil introduced into the vacuum tank 7, a liquid level meter 15 is provided in the vacuum tank 7, and a liquid level switch 16 is provided in the vacuum tank 7. The liquid level meter 15 can detect the oil amount in the vacuum tank 7, after the oil reaches the control height of the liquid level meter 15, the liquid level switch 16 can control the oil circuit to be disconnected, so that the finished oil storage tank 6 stops supplying oil to the vacuum tank 7, and the model and the specification of the liquid level switch 16 and the liquid level meter 15 are selected as required.
As shown in fig. 1, during the oil replacement and purification process, it is necessary to ensure that the oil path is kept vacuum, and the vacuum tank 7 is connected with a vacuum pump 17, and the vacuum pump 17 is connected with a vacuum switch 18. The vacuum pump 17 can be vacuumed in the vacuum tank 7, and the vacuum pump 17 is controlled to run through the vacuum switch 18 when in use, so that the automation degree is improved, and the specification and the model of the vacuum pump 17 can be selected as required, which is not described herein again.
As shown in fig. 1, in the oil supplementing process, the purified oil is delivered into the switching oil conservator 24 through the oil supplementing pipe 13, and an oil outlet valve 14 is arranged on one side of the output end of the oil supplementing pipe 13. The oil outlet valve 14 can control the on-off of the oil path of the oil supplementing pipe 13, so that oil can be conveniently supplied to the oil conservator.
As shown in fig. 1, an oil outlet of a switch oil chamber 23 is connected with an oil drain tee 21, an oil inlet of a switch oil conservator 24 is connected with an oil supplementing tee 22, a first output port of the oil drain tee 21 is connected with an input end of an oil drain pipe 2, and a first input port of the oil supplementing tee 22 is connected with an output end of an oil supplementing pipe 13; and a second output port of the oil drain tee joint 21 is communicated with a second input port of the oil supplementing tee joint 22. The oil outlet of switch grease chamber 23 and the oil inlet of switch conservator 24 set up the tee bend and more conveniently connect various pipelines, and in this embodiment, each pipeline preferentially chooses transparent wire hose to connect for use, and the pipeline tip sets up DN type and connects continuously.
Example two
As shown in fig. 1, in some embodiments, when the entire system does not need to replace oil, the oil quality can be improved by purifying oil, and when the system is purified, an oil path between the switch oil chamber 23 and the switch oil conservator 24 needs to be communicated, in this embodiment, a communicating pipe 19 is further connected between the oil drain pipe 2 corresponding to the oil drain valve 4 and the oil drain pump 5, the communicating pipe 19 is further communicated with one side of the output end of the oil supply pipe 8, and a communicating valve 20 is arranged on the communicating pipe 19. The communicating pipe 19 can communicate the oil drain pipe 2 and the oil supply pipe 8, so that the oil drain pipe 2, the communicating pipe 19, the oil supply pipe 8 and the oil supply pipe 13 are communicated with an oil path between an oil chamber and an oil conservator, and oil can be filtered through the filtering mechanism. The whole system can realize the on-line circulation filtration of oil products in the switch oil chamber 23 and the switch oil conservator 24. During filtering, the communication valve 20, the oil drain valve 3 and the oil outlet valve 14 are opened, the oil supply valve 9 and the oil drain valve 4 are closed, and oil in the conservator and the oil chamber circularly flows and is filtered through the filtering mechanism.
In the specification of the present invention, a large number of specific details are explained. It can be understood, however, that embodiments of the invention may be practiced without these specific details. In some instances, well-known methods, systems, and techniques have not been shown in detail in order not to obscure an understanding of this description.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments can be modified, or some or all of the technical features can be equivalently replaced; such modifications and substitutions do not substantially depart from the scope of the embodiments of the present invention, and are intended to be covered by the claims and the specification.
Claims (9)
1. Electrified replacement of transformer on-load tap-changer insulating oil and clean system its characterized in that: comprises that
The oil drainage assembly: the oil drain assembly comprises an oil drain pipe (2) and a waste oil storage tank (1), the input end of the oil drain pipe (2) is communicated with an oil outlet of the switch oil chamber (23), the output end of the oil drain pipe (2) is communicated with the input end of the waste oil storage tank (1), and an oil drain pump (5) for pumping oil is arranged on the oil drain pipe (2);
an oil supplementing assembly: the oil supplementing assembly comprises a product oil storage tank (6) and a vacuum tank (7); an oil supply pipe (8) is arranged between the output end of the finished oil storage tank (6) and the input end of the vacuum tank (7), the output end of the vacuum tank (7) is connected with an oil supplementing pipe (13) connected with an oil inlet of a switch oil conservator (24), an oil supplementing pump (12) is arranged on the oil supplementing pipe (13), and a filtering mechanism for filtering oil is arranged on the oil supplementing pipe (13);
the oil supplementing pump (12) and the oil discharging pump (5) are also connected with a controller.
2. The live oil replacement and purification system for on-load tap-changer insulation of transformer of claim 1, characterized in that:
the filtering mechanism comprises an impurity removing filter (11) and a water removing filter (10) which are connected in series on an oil supplementing pipe (13), and the impurity removing filter (11) and the water removing filter (10) are positioned between an oil supplementing pump (12) and a vacuum tank (7) corresponding to the oil supplementing pipe (13); and the impurity removal filter (11) is close to one side of the oil replenishing pump (12), and a pressure sensor and a pressure gauge are arranged on the impurity removal filter (11).
3. The live oil replacement and purification system for on-load tap-changer insulation of transformer of claim 1, characterized in that:
be equipped with oil drain pipe (2) valve and oil drain port valve (4) on oil drain pipe (2), oil drain pipe (2) valve is located between oil drain pump (5) and oil drain pipe (2) input, oil drain port valve (4) are located between oil drain pump (5) and oil drain pipe (2) output.
4. The live oil replacement and purification system for on-load tap-changer insulation of transformer of claim 3, characterized in that:
the oil drain pipe (2) corresponds and still has a communicating pipe (19) between oil drain port valve (4) and oil drain pump (5), communicating pipe (19) still are linked together with oil feed pipe (8) output one side, be equipped with communicating valve (20) on communicating pipe (19).
5. The live oil replacement and purification system for on-load tap-changer insulation of transformer of claim 1, characterized in that:
and an oil supply valve (9) for supplying oil to the vacuum tank (7) is arranged on one side of the input end of the oil supply pipe (8).
6. The live oil replacement and purification system for on-load tap-changer insulation of transformer of claim 1, characterized in that:
a liquid level meter (15) for detecting the liquid level is arranged in the vacuum tank (7), and a liquid level switch (16) is further arranged in the vacuum tank (7).
7. The live oil replacement and purification system for on-load tap-changer insulation of transformer of claim 1, characterized in that:
the vacuum tank (7) is connected with a vacuum pump (17), and the vacuum pump (17) is connected with a vacuum switch (18).
8. The live oil replacement and purification system for on-load tap-changer insulation of transformer of claim 1, characterized in that:
and an oil outlet valve (14) is arranged on one side of the output end of the oil supplementing pipe (13).
9. The live oil replacement and purification system for on-load tap-changer insulation of transformer of claim 1, characterized in that:
an oil outlet of the switch oil chamber (23) is connected with an oil drain tee joint (21), an oil inlet of the switch oil conservator (24) is connected with an oil supplementing tee joint (22), a first output port of the oil drain tee joint (21) is connected with an input end of the oil drain pipe (2), and a first input port of the oil supplementing tee joint (22) is connected with an output end of the oil supplementing pipe (13); and a second output port of the oil discharge tee joint (21) is communicated with a second input port of the oil supplement tee joint (22).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921453828.7U CN210091879U (en) | 2019-09-03 | 2019-09-03 | Transformer on-load tap-changer insulating oil live replacement and purification system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921453828.7U CN210091879U (en) | 2019-09-03 | 2019-09-03 | Transformer on-load tap-changer insulating oil live replacement and purification system |
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| CN210091879U true CN210091879U (en) | 2020-02-18 |
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| CN201921453828.7U Active CN210091879U (en) | 2019-09-03 | 2019-09-03 | Transformer on-load tap-changer insulating oil live replacement and purification system |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111430114A (en) * | 2020-05-06 | 2020-07-17 | 广东电网有限责任公司 | Electrified oil filtering device and method for main transformer on-load switch |
| CN112342074A (en) * | 2020-12-21 | 2021-02-09 | 山东恒利热载体工程技术有限公司 | Regenerated base oil lubricating oil light-resistant and heat-stabilizing agent |
| CN112625781A (en) * | 2020-12-21 | 2021-04-09 | 山东恒利热载体工程技术有限公司 | Oil product light stabilizer |
| CN113903558A (en) * | 2021-08-18 | 2022-01-07 | 广西电网有限责任公司电力科学研究院 | Uninterrupted oil change and oil filtering device for on-load voltage regulating switch of main transformer |
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2019
- 2019-09-03 CN CN201921453828.7U patent/CN210091879U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111430114A (en) * | 2020-05-06 | 2020-07-17 | 广东电网有限责任公司 | Electrified oil filtering device and method for main transformer on-load switch |
| CN112342074A (en) * | 2020-12-21 | 2021-02-09 | 山东恒利热载体工程技术有限公司 | Regenerated base oil lubricating oil light-resistant and heat-stabilizing agent |
| CN112625781A (en) * | 2020-12-21 | 2021-04-09 | 山东恒利热载体工程技术有限公司 | Oil product light stabilizer |
| CN113903558A (en) * | 2021-08-18 | 2022-01-07 | 广西电网有限责任公司电力科学研究院 | Uninterrupted oil change and oil filtering device for on-load voltage regulating switch of main transformer |
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