CN201717088U - Reversing pipeline - Google Patents
Reversing pipeline Download PDFInfo
- Publication number
- CN201717088U CN201717088U CN201020187560XU CN201020187560U CN201717088U CN 201717088 U CN201717088 U CN 201717088U CN 201020187560X U CN201020187560X U CN 201020187560XU CN 201020187560 U CN201020187560 U CN 201020187560U CN 201717088 U CN201717088 U CN 201717088U
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- oil
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- load tap
- filter
- pipeline
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- 238000001914 filtration Methods 0.000 description 30
- 238000004891 communication Methods 0.000 description 8
- 238000012423 maintenance Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 238000000926 separation method Methods 0.000 description 5
- 238000012360 testing method Methods 0.000 description 5
- 239000012535 impurity Substances 0.000 description 4
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- 238000010586 diagram Methods 0.000 description 3
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- 230000001012 protector Effects 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 239000012491 analyte Substances 0.000 description 1
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- 230000033228 biological regulation Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
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- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
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- 230000003247 decreasing effect Effects 0.000 description 1
- 238000007872 degassing Methods 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000003203 everyday effect Effects 0.000 description 1
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- 238000012797 qualification Methods 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
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Abstract
The utility model discloses a reversing pipeline, which aims to solve the problem of the prior art that the pipeline connection is complicated. The reversing pipeline comprises a first input end, a second input end, a first output end, a second output end, a first valve, a second valve, a third valve and a fourth valve, wherein the first valve is connected between the first input end and the first output end; the second valve is connected between the second input end and the first output end; the third valve is connected between the first input end and the second output end; and the fourth valve is connected between the second input end and the second output end. The utility model can help to simplify the pipeline connection.
Description
Technical field
The utility model relates to field of mechanical technique, in particular to a kind of commutation pipeline.
Background technology
On load tap changer is the most frequent equipment of operation in each parts of transformer, and its each back transformer oil that switches may produce analyte and free carbon, causes transformer oil deterioration and decreasing insulating." operating shunting switch, when per 1～2 year or tap conversion 5000～10,000 time or oil breakdown voltage were lower than 25kV, the suspended core maintenance of uncapping of should having a power failure was cleaned and is changed oil or oil strain 1 time for DL/T574-95 " on load tap changer operating maintenance guide rule " regulation." this obviously contradicts with the basic demand of " prolonging the interruption maintenance cycle " in the electric power system.Therefore transportable transformer on-load tap-changer on-line oil filtering technology is arisen at the historic moment.
The on-load tap-changer on-line oil filtering technology is ripe relatively at present, but oil-filtering apparatus is the independent stationary formula, promptly an on-line oil filter is installed on permanent fixation ground on every on-load tap-changing transformer, there is special-purpose filter core this on-line oil filter inside, this device carries out the oil strain operation according to the rule that is provided with, for example every day oil strain 1 hour.Be in operation, in fact oil-filtering apparatus does not need to carry out frequent filter operation.On every on-load tap-changing transformer oil-filtering apparatus is installed, has been increased the cost that equipment drops on the one hand, oil-filtering apparatus itself also brings a large amount of maintenance works on the other hand.With Beijing is example, and at present Beijing major network main transformer is about 910,835 of oil immersed type on-load tap-changing transformers, and it is about 92% to account for sum, adopt the input of fixed on-line oil filter device of on-load tap-changer bigger, and the maintenance workload of equipment is also bigger.
In relevant technical scheme, the online oil filtration machine cost of on-load tap-changing transformer is higher and maintenance workload equipment is bigger, for this problem, effective solution is not proposed at present as yet, therefore the inventor has proposed a kind of portable oil-filtering apparatus, it has two links, before oil strain these two links is connected with the oil circuit two ends of on-load tap changers of transformers respectively.Therefore one of them link of this movable type oil-filtering apparatus should will should be connected with the oil circuit outlet of on-load tap changers of transformers as the link of input regularly as input.Because the oil circuit two ends of the on-load tap changers of transformers of different types are also inequality as the situation of oil circuit outlet or inlet, in a single day just need take reclosing apart so connect instead, it is comparatively loaded down with trivial details to work.
Have two inputs and equipment that have gas or liquid to pass through for other, need take apart during when the fixedly input misconnection of this equipment and to reconnect to the non-output of another equipment, complex operation, so the inventor has proposed a kind of commutation pipeline and solves this problem.
The utility model content
The purpose of this utility model is to provide a kind of commutation pipeline, need take the problem that reclosing causes complex operation apart when connecting with solution equipment under the situation of misconnection pipeline.
To achieve these goals, according to an aspect of the present utility model, provide a kind of commutation pipeline.
Commutation pipeline in the utility model comprises: first, second input and first, second output; First to fourth valve; Wherein, described first valve is connected between the described first input end and first output; Described second valve is connected between described second input and first output; Described the 3rd valve is connected between the described first input end and second output; Described the 4th valve is connected between described second input and second output.
Further, also wrap the 5th valve and the 6th valve, wherein, described the 5th valve and the series connection of the 6th valve; The free end of described the 5th valve and the 6th valve is connected with second output with described first output respectively; Described the 6th valve is a unidirectional valve.
Further, also comprise the 7th valve, described the 7th valve is connected between the described first input end and second input.
Use the technical solution of the utility model, by the connection of first to fourth valve between each input and output, make the input and the output of commutation pipeline to switch by the operation of valve, thereby can under the anti-situation of input termination, switch to correct direction, simplify the operation that pipeline connects.
Description of drawings
Accompanying drawing described herein is used to provide further understanding of the present utility model, constitutes the application's a part, and illustrative examples of the present utility model and explanation thereof are used to explain the utility model, do not constitute improper qualification of the present utility model.In the accompanying drawings:
Fig. 1 is according to the on-load tap changers of transformers oil-filtering apparatus flow chart among the utility model embodiment;
Fig. 2 is according to the flange plate structure schematic diagram in the on-load tap changers of transformers among the utility model embodiment.
Embodiment
Need to prove that under the situation of not conflicting, embodiment and the feature among the embodiment among the application can make up mutually.Describe the utility model below with reference to the accompanying drawings and in conjunction with the embodiments in detail.
Fig. 1 is the device part schematic diagram according to the charged oil strain of on-load tap changers of transformers among the utility model embodiment.
As shown in Figure 1, the device of the charged oil strain of on-load tap changers of transformers in the present embodiment comprises first transfer valve 11, coarse filter 12, oil pump 13, accurate filter 14, second transfer valve 15, and this device also comprises (not shown): first communication means and second communication means, they can be flanges, and the circle centre position of this flange has the conduit perpendicular to ring flange.First communication means can be respectively applied for the oil extraction outlet of on-load tap changers of transformers with second communication means and be connected with the oiling inlet.
In structure shown in Figure 1, oil is earlier by oil pump 13 and then by accurate filter 14.For this measure, below be described further again.For existing fixed formula oil-filtering apparatus, in the day-to-day operation of transformer, carry out filter operation often, make the interior oil of on load tap changer can keep the state that comparatively cleans, so oil pump is contained in after the filter core usually; And the oil-filtering apparatus in the present embodiment is primarily aimed at the on load tap changer that the long period do not carry out filter operation in realization, comprise more impurity (wherein comprising free carbon) in the oil in it, make the vicidity of oil increase, therefore mobile decline promptly use oil pump 13 to strengthen the flowability of oil after coarse filter 12.Simultaneously because 14 pairs of oil of accurate filter mobile has certain inhibition, therefore in general the oil pressure in the pipeline between oil pump 13 and the accurate filter 14 can increase, so can on this pipeline, install Pressure gauge M1 additional,, prevent that pipeline pressure is excessive and cause damage with the monitoring pipeline pressure.
Equally, because the oil-filtering apparatus in the present embodiment is at the more oil of impurity, so in realization, can adopt filter screen as main filtering material in the coarse filter 12, can adopt filter paper as main filtering material in the accurate filter 14, filter screen and filter paper cost are lower, can make the filter of big water environment capacity, make oil-filtering apparatus to carry out cleaning or change filter screen or filter paper again after the oil strain operation to a plurality of on load tap changeres.
As shown in Figure 1, can heater 16 be installed after accurate filter 14, be used for the oil that is filtered is heated, to improve its flowability.Particularly under the lower condition of temperature, use heater can significantly improve filter efficiency.Heater 16 is installed in after the accurate filter 14, can prevent that heater 16 is by the contaminating impurity in the oil.
Because filtering or transformer in service, produce the loss of oil inevitably, therefore in the present embodiment, can after accurate filter 14, install oil vessel 17 additional, under the situation that heater 16 is installed, oil vessel 17 can be installed after heater 16, store a certain amount of oil therein in advance, be used for that the loss of the oil in the on load tap changer is done one and replenish.The oil level of on load tap changer can be read by oil level indicator from it.Can after oil vessel 17, add oil loading pump 18, further strengthen the flowability of ducted oil, can install the 5th transfer valve 171 additional between oil vessel 17 and the oil pump 18, be used for sealing oil vessel 17.If oily not enough in the oil vessel 17 can inject oil by Fill valve 19; For unnecessary oil, can discharge by draining valve 20.
Oil-filtering apparatus in the present embodiment can comprise circulating valve 23 and unidirectional valve 24 as shown in Figure 1.Unidirectional valve 24 is in that to be subjected to bigger pressure for example open-minded automatically during 0.1Mpa, and all the other situations are next closes.If the viscosity of ducted oil is bigger, then under the effect of oil pump 13, may cause the damage of accurate filter 14.Therefore can install circulating valve 23 and unidirectional valve 24 additional, when the viscosity of ducted oil is big, because the barrier effect of accurate filter 14 increases, the pressure of ducted oil also increases, when pressure arrives certain value, unidirectional valve 24 is open-minded, and oil returns in the on load tap changer along circulating valve 23, unidirectional valve 24 and second transfer valve 15, thereby has guaranteed the safety of pipeline and accurate filter 14.Overpressure protector A1 can be installed after accurate filter 14, and its pressure in pipeline sends warning when exceeding standard.
Oil-filtering apparatus in the present embodiment can comprise intercommunication valve 25, the 3rd transfer valve 26, the 4th transfer valve 27 and coarse filter 28, and their connected mode as shown in Figure 1.As can be seen, if first transfer valve 11 and second transfer valve 12 are closed, and open the 3rd transfer valve 26 and the 4th transfer valve 27, oil in the on load tap changer is earlier through the 3rd transfer valve 26 so, obtaining getting back to the 4th transfer valve 27 after the filtration, at the pipeline that does not have unidirectional valve 24, circulating valve 23 and connect, perhaps under the situation that unidirectional valve 24 is closed, oil is by coarse filter 28.Can install Pressure gauge M2 and overpressure protector A2 equally additional, play with Pressure gauge M1 and overpressure protector A1 similarly acting on.
As shown in Figure 1, oil passes through triple valve 29 then through heater 16, or directly passes through triple valve 29 through after the accurate filter 14.Before oil-filtering apparatus in the present embodiment and on load tap changer are connected, earlier the oil that has been full of in the oil-filtering apparatus is tested, open intercommunication valve 25 this moment, make the transfer valve 11 of winning, second transfer valve 15 and the 3rd transfer valve 26, the 4th transfer valve 27 with respect to input I1 and I2 by short circuit, oil is first through piping P1 after passing through triple valve 29, through vacuum separation tank 21, carry out exhaust and drying, can utilize 30 pairs of oil of sampling valve to sample, connect with on load tap changer again after meeting the requirements, then oil through after the triple valve 29 through piping P2, can utilize 31 pairs of oil of sample valve to take a sample in the process of filtering, so that understand the effect of filtering, when the clean-up performance of oil is up to standard, stop to filter.
Fig. 2 is the flange plate structure schematic diagram of the oil-filtering apparatus among the utility model embodiment.
Below again the using method of the oil-filtering apparatus in the present embodiment is made an explanation.During oil-filtering apparatus in using present embodiment, earlier first communication means is connected with on load tap changer with second communication means.Ring flange in the present embodiment as shown in Figure 2, the hole 20 of strip wherein can adapt to the flange of various on load tap changer outlet valves.
Commutation pipeline in the present embodiment mainly is made up of first transfer valve 11, second transfer valve 15, the 3rd transfer valve 26 and the 4th transfer valve 27 and the pipeline that connects between them, and I1 point, I2 point and O1 point, O2 point are respectively as first, second input and first, second output of this commutation pipeline.As can be seen, first transfer valve 11 is connected between I1 point and the O1 point, and second transfer valve 15 is connected between I2 point and the O2 point, and the 3rd transfer valve 26 is connected between I2 point and the O1 point, and the 4th transfer valve 27 is connected between I1 point and the O2 point.
At oil-filtering apparatus with after on load tap changer is connected, on load tap changer according to different types, first communication means may be connected with the oiling inlet with the oil extraction outlet of on load tap changer respectively with second communication means, also may be connected with the oil extraction outlet with the oiling inlet of on load tap changer respectively.In the previous case, open first transfer valve 11 and second transfer valve 15, close the 3rd transfer valve 26 and the 4th transfer valve 27; Under latter event, open the 3rd transfer valve 26 and the 4th transfer valve 27, close first transfer valve 11 and second transfer valve 15.Dual mode all makes oil filter by coarse filter 12 earlier after deriving from load tap changer, entered accurate filter 14 by oil pump 13 then, finally be imported into the oiling inlet of on load tap changer through the oil of accurate filter 14 processing along pipeline.Before the oil on load tap changer filters, be full of oil in the oil-filtering apparatus in the present embodiment, and can have done above described test oil wherein.The test before or can use vent valve F1 and vent valve F2 to emit ducted gas in the test process.After test is finished, utilize triple valve 29, with oily import pipe P1, next the oil in the on load tap changer is filtered.In test or filter process, can use temperature controller 161 to monitor the work of heater 16, heater 16 when the temperature of oil is hanged down.
In addition, in that being filtered, the oil in the on load tap changer reaches a period of time, after feasible oil wherein comparatively cleans, first transfer valve 11, second transfer valve 15 and the 3rd transfer valve 26, the 4th transfer valve 27 can be switched, thereby the gateway of oil from load tap changer exchanged, and then the flow direction of oil in filter changed, this mode helps to remove by filter same direction and filters the impurity that is difficult to remove.
As can be seen from the above description, use the technical scheme of present embodiment, by the connection of first to fourth valve between each input and output, make the input and the output of commutation pipeline to switch by the operation of valve, thereby can under the anti-situation of input termination, switch to correct direction, simplify the operation that pipeline connects.
The above is a preferred embodiment of the present utility model only, is not limited to the utility model, and for a person skilled in the art, the utility model can have various changes and variation.All within spirit of the present utility model and principle, any modification of being done, be equal to replacement, improvement etc., all should be included within the protection range of the present utility model.
Claims (3)
1. a commutation pipeline is characterized in that, comprising:
First, second input and first, second output;
First to fourth valve; Wherein,
Described first valve is connected between the described first input end and first output;
Described second valve is connected between described second input and first output;
Described the 3rd valve is connected between the described first input end and second output;
Described the 4th valve is connected between described second input and second output.
2. commutation pipeline according to claim 1 is characterized in that, also wraps the 5th valve and the 6th valve, wherein,
Described the 5th valve and the series connection of the 6th valve;
The free end of described the 5th valve and the 6th valve is connected with second output with described first output respectively;
Described the 6th valve is a unidirectional valve.
3. commutation pipeline according to claim 1 and 2 is characterized in that, also comprises the 7th valve, and described the 7th valve is connected between the described first input end and second input.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020187560XU CN201717088U (en) | 2010-05-06 | 2010-05-06 | Reversing pipeline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020187560XU CN201717088U (en) | 2010-05-06 | 2010-05-06 | Reversing pipeline |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201717088U true CN201717088U (en) | 2011-01-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201020187560XU Expired - Lifetime CN201717088U (en) | 2010-05-06 | 2010-05-06 | Reversing pipeline |
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| Country | Link |
|---|---|
| CN (1) | CN201717088U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105632707A (en) * | 2015-12-27 | 2016-06-01 | 国家电网公司 | Oil inlet and outlet reversing structure for oil filtering machine of transformer |
-
2010
- 2010-05-06 CN CN201020187560XU patent/CN201717088U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105632707A (en) * | 2015-12-27 | 2016-06-01 | 国家电网公司 | Oil inlet and outlet reversing structure for oil filtering machine of transformer |
| CN105632707B (en) * | 2015-12-27 | 2017-08-01 | 国家电网公司 | A kind of transformer oil filter oil inlet and outlet commutating structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: STATE ELECTRIC NET CROP. Free format text: FORMER OWNER: BEIJING ELECTRIC POWER CORP. Effective date: 20130528 Owner name: BEIJING ELECTRIC POWER CORP. Effective date: 20130528 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 100031 XICHENG, BEIJING TO: 100031 DONGCHENG, BEIJING |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20130528 Address after: 100031 West Chang'an Avenue, Beijing, No. 86 Patentee after: State Grid Corporation of China Patentee after: Beijing Electric Power Corp. Address before: 100031 Beijing Qianmen West Street, Xicheng District, No. 41 Patentee before: Beijing Electric Power Corp. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20110119 |
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| CX01 | Expiry of patent term |