CN111828754A - Switching valve of transformer moisture absorber - Google Patents
Switching valve of transformer moisture absorber Download PDFInfo
- Publication number
- CN111828754A CN111828754A CN202010623141.4A CN202010623141A CN111828754A CN 111828754 A CN111828754 A CN 111828754A CN 202010623141 A CN202010623141 A CN 202010623141A CN 111828754 A CN111828754 A CN 111828754A
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- sealing
- cylinder
- connecting disc
- disc
- transformer
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L29/00—Joints with fluid cut-off means
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/08—Cooling; Ventilating
- H01F27/10—Liquid cooling
- H01F27/12—Oil cooling
- H01F27/14—Expansion chambers; Oil conservators; Gas cushions; Arrangements for purifying, drying, or filling
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Transformer Cooling (AREA)
Abstract
The invention relates to the field of transformers, in particular to a changeover valve of a moisture absorber of a transformer. The utility model provides a transformer moisture absorber switching valve, including first connection pad and second connection pad, connect through main connecting cylinder between first connection pad and the second connection pad, main connecting cylinder, it is provided with the hole of absorbing moisture all to correspond between first connection pad and the second connection pad, be provided with first sealed pad on the first connection pad, be provided with the sealed pad of second on the second connection pad, first sealed pad all includes sealed main part with the sealed pad of second, one side of sealed main part is provided with the snap ring, all be provided with the ring channel on first connection pad and the second connection pad, be provided with the pressurized cavity in the sealed main part, be provided with the inflation chamber in the snap ring, be connected through air guide channel between pressurized cavity and the inflation chamber. The invention can connect the new moisture absorber and the connecting pipe and has good sealing performance.
Description
Technical Field
The invention relates to the field of transformers, in particular to a changeover valve of a moisture absorber of a transformer.
Background
The moisture absorber for the transformer is mainly used for removing and drying impurities and moisture in air entering an oil conservator in the transformer due to the change of the temperature of the transformer oil so as to maintain the insulation strength of the transformer oil.
The oil conservator is used for adjusting the volume change of transformer oil under the condition of temperature change, when the oil temperature rises, the oil volume becomes large, the oil level on the oil conservator can rise, when the oil temperature falls, the oil volume becomes small, and the oil level of the oil conservator can fall. In order to ensure that the pressure in the oil tank is not too large, the upper layer gas of the oil storage cabinet is required to be communicated with the outside air during design, but when the humidity of the outside air is high, moisture can enter the oil storage cabinet to pollute the transformer oil, and when the water content exceeds a standard value of 20mg/L, the insulation performance of the transformer oil is reduced, poor consequences such as overproof dielectric loss and the like are caused, insulation breakdown is finally caused, serious safety accidents such as short circuit and the like are caused, therefore, a connecting pipe and a moisture absorber are arranged on the oil storage cabinet and are communicated with the outside air through the connecting pipe and the moisture absorber.
The national standard of moisture absorber DL/T1386-2014 implemented in 2015 is the moisture absorber selection guide rule, which specifies that the mounting size diameter of a moisture absorber connecting flange is 85mm, namely the hole pitch of the connecting flange is 6cm, the mounting size diameter of an old moisture absorber connecting flange in a transformer substation is 115mm, namely the hole pitch of the connecting flange is 8cm, the gap between the flange holes is larger than the national standard size of the moisture absorber, and the mounting size between the connecting pipe and a new moisture absorber is not matched due to the fact that the size of the flange hole in the connecting pipe is the same as the size of the flange hole in the old moisture absorber, the old moisture absorber is stopped, spare parts are few, the defect elimination quality is low, the defect frequency of the old moisture absorber is higher than that of the new moisture absorber, and the workload of power transformation operation and maintenance personnel is increased.
Therefore, it is very important to design a switching valve capable of connecting the new moisture absorber and the connecting tube.
Disclosure of Invention
The invention mainly aims to solve the problems and provides a changeover valve of a transformer moisture absorber, which can connect a novel moisture absorber and a connecting pipe and has good sealing performance.
The purpose of the invention is mainly realized by the following scheme: a changeover valve of a transformer moisture absorber comprises a first connecting disc and a second connecting disc, wherein the first connecting disc is used for being connected with a flange on the moisture absorber, the second connecting disc is used for being connected with the flange on the connecting tube, the first connecting disc and the second connecting disc are connected through a main connecting cylinder, moisture absorbing holes are correspondingly formed among the main connecting cylinder, the first connecting disc and the second connecting disc, a first sealing gasket matched with the flange on the moisture absorber is arranged on the first connecting disc, a second sealing gasket matched with the flange on the connecting tube is arranged on the second connecting disc, the first sealing gasket and the second sealing gasket respectively comprise a sealing main body, a clamping ring is arranged on one side of the sealing main body, annular grooves matched with the clamping ring are formed in the first connecting disc and the second connecting disc, a pressure is arranged in the sealing main body, and an expansion cavity is formed in the clamping ring, the air compression cavity is connected with the expansion cavity through an air guide channel, and the sealing main body is provided with a sealing ring corresponding to the moisture absorption hole. The first connecting disc is consistent with the design standard of a flange of the moisture absorber, the second connecting disc is consistent with the design standard of a flange of the connecting pipe, therefore, after two connecting discs are connected, the installation of a new moisture absorber is realized, the first connecting disc is connected with the second connecting disc through the main connecting cylinder, moisture absorbing holes are correspondingly arranged among the main connecting cylinder, the first connecting disc and the second connecting disc, a first sealing gasket matched with the flange on the moisture absorber is arranged on the first connecting disc, a second sealing gasket matched with the flange on the connecting pipe is arranged on the second connecting disc, the first sealing gasket and the second sealing gasket are same in structure, the first sealing gasket and the second sealing gasket respectively comprise a sealing main body, a clamping ring is arranged on one side of the sealing main body, annular grooves matched with the clamping ring are arranged on the first connecting disc and the second connecting disc, a pressure cavity is arranged in the sealing main body, and an expansion cavity is, the pressure air cavity is connected with the expansion cavity through the air guide channel, after the first connecting disc is connected with the flange of the moisture absorber or the second connecting disc is connected with the connecting pipe flange, the sealing main body is extruded, so that the air in the pressure air cavity enters the expansion cavity through the air guide channel, the expansion cavity expands and then drives the clamping ring to expand, so that the clamping ring tightly supports in the annular groove, thereby greatly improving the sealing effect after the installation of the switching valve, thereby preventing the moisture in the outside air from entering the oil conservator along the connecting pipe after passing through the gap, the corresponding moisture absorption hole in the sealing main body is provided with the sealing ring, the sealing ring is further arranged to improve the sealing effect, the sealing performance is excellent, the old moisture absorber can be replaced by a new moisture absorber through the switching valve, the spare of the new moisture absorber is sufficient, thereby the defect elimination quality is improved, and the defect elimination frequency is reduced.
Preferably, the first connecting disc is provided with a first connecting hole matched with the flange hole on the moisture absorber, and the second connecting disc is provided with a second connecting hole matched with the flange hole on the connecting pipe. The first connecting disc is provided with a first connecting hole matched with the flange hole on the moisture absorber, and the second connecting disc is provided with a second connecting hole matched with the flange hole on the connecting pipe, so that the mounting and the connection are facilitated.
Preferably, the sealing body is provided with an adjusting sheet. Be provided with the adjustment sheet in the sealed main part, the staff of being convenient for of setting up of adjustment sheet adjusts or changes sealed main part, and it is very convenient to adjust.
Preferably, the first sealing gasket and the second sealing gasket are both made of rubber materials. The first sealing gasket and the second sealing gasket are both made of rubber materials, and the rubber materials have good elasticity, are convenient to process and are low in production cost.
Preferably, the main connecting cylinder comprises a first connecting cylinder arranged on the first connecting disc and a second connecting cylinder arranged on the second connecting disc, an external thread section is arranged on the first connecting cylinder, and an internal thread section in threaded connection with the external thread section is arranged on the second connecting cylinder. The main connecting cylinder comprises a first connecting cylinder arranged on the first connecting disc and a second connecting cylinder arranged on the second connecting disc, an external thread section is arranged on the first connecting cylinder, an internal thread section in threaded connection with the external thread section is arranged on the second connecting cylinder, and therefore the main connecting cylinder is convenient to detach and replace individual parts, and replacement and overhaul efficiency is improved.
Preferably, the inner wall of the first connecting cylinder is provided with a sealing assembly used for opening or closing the moisture absorption hole according to the condition of being subjected to an external force, the sealing assembly comprises a plurality of elastic sealing plates, the inner wall of the second connecting cylinder is provided with a supporting cylinder, and the supporting cylinder is provided with a jacking cylinder matched with the elastic sealing plates. The inner wall of the first connecting cylinder is provided with a sealing assembly used for opening or closing the moisture absorption hole according to the condition of being subjected to external force, the sealing assembly comprises a plurality of elastic sealing plates, the inner wall of the second connecting cylinder is provided with a supporting cylinder, the supporting cylinder is provided with a jacking cylinder matched with the elastic sealing plates, when a worker separates the second connecting cylinder from the first connecting cylinder, the jacking cylinder is separated from the elastic sealing plates, so that the elastic sealing plates are not subjected to the external force, the elastic sealing plates are reset and stacked together under the action of self elasticity, the moisture absorption hole can be closed and blocked, and moisture in the outside air is prevented from entering the oil conservator when the worker replaces parts; when the staff installs new second connecting cylinder on first connecting cylinder, a jacking section of thick bamboo can support on elastic sealing plate gradually to open elastic sealing plate top, realize opening in hole that absorbs moisture, the operation is very simple, can not influence transformer equipment's normal operating.
Preferably, the elastic sealing plate is provided with an auxiliary pad. The elastic sealing plate is provided with an auxiliary pad, the auxiliary pad is arranged on one side, close to the side wall of the moisture absorption hole, of the elastic sealing plate, when the jacking cylinder drives the elastic sealing plate to deflect, the auxiliary pad can be abutted between the elastic sealing plate and the side wall of the moisture absorption hole, therefore, the elastic sealing plate is prevented from being irreversibly deformed, and the auxiliary pad can play a certain protection role.
Preferably, the first connecting cylinder is welded to the first connecting plate. The first connecting cylinder is welded on the first connecting disc, so that the connection is very firm and the service life is long.
Preferably, the second connecting cylinder is welded on the second connecting disc. The second connecting cylinder is welded on the second connecting disc, so that the connection is firm, and the service life is prolonged.
Therefore, the switching valve of the transformer moisture absorber has the following advantages: the novel moisture absorber is simple in structure, convenient and fast to use, good in sealing performance and long in service life, and can be connected with the novel moisture absorber and the connecting pipe.
Drawings
Fig. 1 is a front view of the present invention.
Figure 2 is a cross-sectional view of the present invention.
Fig. 3 is a top view of the present invention.
Illustration of the drawings: 1-a first connecting disc, 2-a second connecting disc, 3-a first connecting cylinder, 4-a second connecting cylinder, 5-a first sealing gasket, 6-a second sealing gasket, 7-a sealing body, 8-a snap ring, 9-an air compression cavity, 10-an air guide channel, 11-an expansion cavity, 12-a regulating sheet, 13-a first connecting hole, 14-a second connecting hole, 15-an external thread section, 16-an internal thread section, 17-an elastic sealing plate, 18-a jacking cylinder, 19-a supporting cylinder, 20-an auxiliary gasket, 21-an annular groove, 22-a sealing ring and 23-a moisture absorption hole.
Detailed Description
The technical scheme of the invention is further specifically described by the following embodiments and the accompanying drawings.
Example 1:
as shown in fig. 1, 2 and 3, a transformer moisture absorber switching valve comprises a first connecting disc 1 used for being connected with a flange on a moisture absorber and a second connecting disc 2 used for being connected with a flange on a connecting pipe, wherein the first connecting disc 1 is provided with a first connecting hole 13 matched with a flange hole on the moisture absorber, the second connecting disc 2 is provided with a second connecting hole 14 matched with a flange hole on the connecting pipe, the first connecting disc 1 is consistent with the design standard of a flange of the moisture absorber, the second connecting disc 2 is consistent with the design standard of a flange of the connecting pipe, so that after two connecting parts are connected, the installation of a new moisture absorber is realized, the first connecting disc 1 is connected with the second connecting disc 2 through a main connecting cylinder, moisture absorbing holes 23 are correspondingly arranged between the main connecting cylinder and the first connecting disc 1 as well as the second connecting disc 2, a first sealing gasket 5 matched with the flange on the moisture absorber is arranged on the first connecting disc 1, the second connecting disc 2 is provided with a second sealing gasket 6 matched with a flange on a connecting pipe, the first sealing gasket 5 and the second sealing gasket 6 have the same structure, the first sealing gasket 5 and the second sealing gasket 6 both comprise a sealing main body 7, one side of the sealing main body 7 is provided with a clamping ring 8, the first connecting disc 1 and the second connecting disc 2 are both provided with annular grooves 21 matched with the clamping ring 8, the sealing main body 7 is internally provided with a pressure air cavity 9, an expansion cavity 11 is arranged in the clamping ring 8, the pressure air cavity 9 is connected with the expansion cavity 11 through an air guide channel 10, when the first connecting disc 1 is connected with a flange of a moisture absorber or the second connecting disc 2 is connected with the flange of the connecting pipe, the sealing main body 7 is extruded, so that the air in the pressure air cavity 9 enters the expansion cavity 11 through the air guide channel 10, the expansion cavity 11 expands to drive the clamping ring 8 to expand, so that the clamping, thereby greatly improved the sealed effect after the switching valve installation, thereby prevent that moisture in the outside air from getting into the oil conservator along the connecting pipe after through the clearance in, it is provided with sealing ring 22 to correspond moisture absorption hole 23 on the sealed main part 7, sealing ring 22's setting has further improved sealed effect, sealing performance is splendid, can replace old money moisture absorber with new money moisture absorber through this switching valve, new money moisture absorber spare parts are sufficient, thereby improve the disappearance quality, reduce the disappearance frequency.
Be provided with adjustment sheet 12 on sealed main part 7, the staff of being convenient for of setting up of adjustment sheet 12 adjusts or changes sealed main part 7, and it is very convenient to adjust.
The first sealing gasket 5 and the second sealing gasket 6 are both made of rubber materials, and the rubber materials have good elasticity, are convenient to process and are low in production cost.
The main connecting cylinder comprises a first connecting cylinder 3 arranged on the first connecting disc 1 and a second connecting cylinder 4 arranged on the second connecting disc 2, an external thread section 15 is arranged on the first connecting cylinder 3, an internal thread section 16 in threaded connection with the external thread section 15 is arranged on the second connecting cylinder 4, and therefore the independent parts are conveniently detached and replaced, and replacement and overhaul efficiency is improved.
The inner wall of the first connecting cylinder 3 is provided with a sealing assembly used for opening or closing the moisture absorption hole 23 according to the condition of being subjected to external force, the sealing assembly comprises a plurality of elastic sealing plates 17, the inner wall of the second connecting cylinder 4 is provided with a supporting cylinder 19, the supporting cylinder 19 is provided with a jacking cylinder 18 matched with the elastic sealing plates 17, when a worker separates the second connecting disc 2 and the second connecting cylinder 4 from the first connecting cylinder 3, the jacking cylinder 18 is separated from the elastic sealing plates 17, so that the elastic sealing plates 17 are not subjected to the external force, the elastic sealing plates 17 are reset and stacked together under the action of the self elastic force, the moisture absorption hole 23 can be closed and blocked, and the moisture in the external air is prevented from entering the oil storage cabinet when the worker replaces parts; when the staff installs new second connecting cylinder 4 on first connecting cylinder 3, a jacking section of thick bamboo 18 can support on elastic sealing plate 17 gradually to push away elastic sealing plate 17, realize opening of hole 23 that absorbs moisture, the operation is very simple, can not influence transformer equipment's normal operating.
The elastic sealing plate 17 is provided with an auxiliary pad 20, the auxiliary pad 20 is arranged on one side of the elastic sealing plate 17 close to the side wall of the moisture absorption hole 23, when the jacking cylinder 18 drives the elastic sealing plate 17 to deflect, the auxiliary pad 20 can be abutted between the elastic sealing plate 17 and the side wall of the moisture absorption hole 23, so that the elastic sealing plate 17 is prevented from being irreversibly deformed, and the auxiliary pad 20 can play a certain protection role.
First connecting cylinder 3 welds on first connection pad 1, and second connecting cylinder 4 welds on second connection pad 2, and firm in connection has improved life.
It should be understood that this example is only for illustrating the present invention and is not intended to limit the scope of the present invention. Further, it should be understood that various changes or modifications of the present invention may be made by those skilled in the art after reading the teaching of the present invention, and such equivalents may fall within the scope of the present invention as defined in the appended claims.
Claims (9)
1. A changeover valve of a transformer moisture absorber is characterized by comprising a first connecting disc and a second connecting disc, wherein the first connecting disc is used for being connected with a flange on the moisture absorber, the second connecting disc is used for being connected with the flange on the connecting tube, the first connecting disc and the second connecting disc are connected through a main connecting cylinder, moisture absorbing holes are correspondingly formed among the main connecting cylinder, the first connecting disc and the second connecting disc, a first sealing gasket matched with the flange on the moisture absorber is arranged on the first connecting disc, a second sealing gasket matched with the flange on the connecting tube is arranged on the second connecting disc, the first sealing gasket and the second sealing gasket respectively comprise a sealing main body, a clamping ring is arranged on one side of the sealing main body, annular grooves matched with the clamping ring are formed in the first connecting disc and the second connecting disc, and a pressure air cavity is formed in the sealing main body, the clamp ring in be provided with the inflation chamber, the chamber of calming anger pass through the air guide channel and be connected with the inflation chamber between, sealed main part on correspond the hole that absorbs moisture and be provided with the sealing ring.
2. A transformer dehydrating breather switching valve as claimed in claim 1, wherein the first connecting plate is provided with a first connecting hole matching with the flange hole of the dehydrating breather, and the second connecting plate is provided with a second connecting hole matching with the flange hole of the connecting pipe.
3. The transformer dehydrating breather switching valve of claim 1, wherein the sealing body is provided with an adjustment tab.
4. The transformer dehydrating breather switching valve of claim 1, 2 or 3, wherein the first gasket and the second gasket are made of rubber material.
5. The transformer dehydrating breather switching valve of claim 1, 2 or 3, wherein the primary connecting cylinder comprises a first connecting cylinder disposed on the first connecting plate and a second connecting cylinder disposed on the second connecting plate, the first connecting cylinder is provided with an external thread section, and the second connecting cylinder is provided with an internal thread section in threaded connection with the external thread section.
6. The switching valve of transformer moisture absorber as claimed in claim 5, wherein the inner wall of the first connecting cylinder is provided with a sealing assembly for opening or closing the moisture absorbing hole according to the external force, the sealing assembly comprises a plurality of elastic sealing plates, the inner wall of the second connecting cylinder is provided with a supporting cylinder, and the supporting cylinder is provided with a jacking cylinder matched with the elastic sealing plates.
7. The adapter valve of claim 6, wherein said resilient sealing plate is provided with an auxiliary pad.
8. A transformer dehydrating breather switching valve as in claim 1, 2 or 3, wherein the first connecting cylinder is welded to the first connecting plate.
9. A transformer dehydrating breather switching valve as in claim 1, 2 or 3, wherein the second connecting cylinder is welded to the second connecting plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010623141.4A CN111828754B (en) | 2020-06-30 | 2020-06-30 | Switching valve of transformer moisture absorber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010623141.4A CN111828754B (en) | 2020-06-30 | 2020-06-30 | Switching valve of transformer moisture absorber |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111828754A true CN111828754A (en) | 2020-10-27 |
| CN111828754B CN111828754B (en) | 2021-11-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010623141.4A Active CN111828754B (en) | 2020-06-30 | 2020-06-30 | Switching valve of transformer moisture absorber |
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| CN (1) | CN111828754B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110121219A1 (en) * | 2007-08-21 | 2011-05-26 | Tyco Valves & Controls B.V. | Composite valve |
| CN204010930U (en) * | 2014-08-28 | 2014-12-10 | 广西电网公司桂林供电局 | A kind of transformer self-healing dehydrating breather |
| CN204315348U (en) * | 2015-01-21 | 2015-05-06 | 国家电网公司 | Moisture absorber of transformer |
| CN207195885U (en) * | 2017-08-20 | 2018-04-06 | 许月进 | The vapour cycle boiler hot-water pipeline high-sealability flange of double-work medium two |
| CN207961818U (en) * | 2018-02-12 | 2018-10-12 | 江苏唐刘兴东不锈钢有限公司 | A kind of steel flange |
| CN209839418U (en) * | 2019-04-25 | 2019-12-24 | 特业法兰管件有限公司 | Flange for high-temperature steam pipeline |
-
2020
- 2020-06-30 CN CN202010623141.4A patent/CN111828754B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110121219A1 (en) * | 2007-08-21 | 2011-05-26 | Tyco Valves & Controls B.V. | Composite valve |
| CN204010930U (en) * | 2014-08-28 | 2014-12-10 | 广西电网公司桂林供电局 | A kind of transformer self-healing dehydrating breather |
| CN204315348U (en) * | 2015-01-21 | 2015-05-06 | 国家电网公司 | Moisture absorber of transformer |
| CN207195885U (en) * | 2017-08-20 | 2018-04-06 | 许月进 | The vapour cycle boiler hot-water pipeline high-sealability flange of double-work medium two |
| CN207961818U (en) * | 2018-02-12 | 2018-10-12 | 江苏唐刘兴东不锈钢有限公司 | A kind of steel flange |
| CN209839418U (en) * | 2019-04-25 | 2019-12-24 | 特业法兰管件有限公司 | Flange for high-temperature steam pipeline |
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| Publication number | Publication date |
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| CN111828754B (en) | 2021-11-09 |
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