CN113690000A - Dry-type sleeve paste injection process - Google Patents
Dry-type sleeve paste injection process Download PDFInfo
- Publication number
- CN113690000A CN113690000A CN202110782831.9A CN202110782831A CN113690000A CN 113690000 A CN113690000 A CN 113690000A CN 202110782831 A CN202110782831 A CN 202110782831A CN 113690000 A CN113690000 A CN 113690000A
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- CN
- China
- Prior art keywords
- dry
- sleeve
- leakage
- casing pipe
- outer sleeve
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B19/00—Apparatus or processes specially adapted for manufacturing insulators or insulating bodies
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B17/00—Insulators or insulating bodies characterised by their form
- H01B17/26—Lead-in insulators; Lead-through insulators
- H01B17/28—Capacitor type
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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
- H01F27/02—Casings
- H01F27/04—Leading of conductors or axles through casings, e.g. for tap-changing arrangements
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Insulating Bodies (AREA)
Abstract
The invention discloses a dry-type sleeve paste injection process, which comprises the steps of sequentially carrying out compressed gas pressurization and pressure maintaining, leakage detection and leakage repair, vacuum pressure maintaining, leakage detection and leakage repair on an assembled dry-type sleeve, pressurizing mixed gas, covering, pressure maintaining, leakage detection and leakage repair, vacuumizing the dry-type sleeve, and injecting paste. The paste injection process provided by the invention can obviously improve the quality control level of the dry-type casing pipe product and the qualification rate of the dry-type casing pipe product, reduce the paste injection cost, ensure the stable and reliable operation of the dry-type casing pipe and further reduce the product operation and maintenance cost.
Description
Technical Field
The invention relates to a dry-type sleeve paste injection process, and belongs to the field of electricity.
Background
With the promotion and rapid development of power transmission and transformation technologies, the requirements of China on the quality, safety and reliability of high-voltage power equipment are increasingly promoted. The dry-type sleeve is continuously promoted to be applied to a power system by virtue of excellent fireproof and explosion-proof performances of the dry-type sleeve. The dry type sleeve is an oilless product, the inner core is made of flame-retardant insulating materials, the risk of combustion and explosion is avoided, the transformer fire cannot be caused when the sleeve fails, and the composite outer sleeve dry type sleeve is used, so that secondary damage to peripheral equipment cannot be caused when the sleeve fails; the fireproof and explosion-proof performance of the dry-type sleeve has important significance for reducing the fire of the transformer.
The insulation between the dry-type sleeve capacitor core and the hollow composite outer sleeve or the porcelain outer sleeve adopts a mode of filling power cable insulating paste. The quality of the process for filling the power cable insulation paste seriously affects the product quality of the dry-type sleeve, and a stable, safe and reliable insulation paste injection process is urgently needed to improve the product quality and the safe and reliable performance of the dry-type sleeve.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides the dry-type sleeve paste injection process, which can obviously improve the control level of the quality of the dry-type sleeve product and the qualification rate of the dry-type sleeve product, reduce the paste injection cost, ensure the stable and reliable operation of the dry-type sleeve and further reduce the product operation and maintenance cost.
The technical scheme adopted by the invention is as follows:
a dry-type sleeve paste injection process comprises the following steps:
the method comprises the following steps: the integral assembly of the sleeve is completed according to requirements;
step two: compressed air is filled into the space between the dry capacitor core and the outer sleeve of the dry sleeve to reach the technological requirement pressure value;
step three: maintaining the pressure of the compressed air in the dry-type sleeve and searching a leakage point; if no missing point exists, the next step is carried out; if the leakage point exists, the leakage point is repaired, if the casing pipe needs to be reassembled after the leakage is repaired, the first step and the subsequent operation are carried out, and if the casing pipe does not need to be reassembled, the second step and the subsequent operation are carried out;
step four: vacuumizing the space between the dry capacitor core and the outer sleeve of the dry sleeve to the vacuum degree required by the process;
step five: maintaining the pressure of the vacuum in the dry sleeve and performing vacuum leakage detection; if no missing point exists, the next step is carried out; if the leakage point exists, the leakage point is repaired, if the casing pipe needs to be reassembled after the leakage is repaired, the first step and the subsequent operation are carried out, and if the casing pipe does not need to be reassembled, the second step and the subsequent operation are carried out;
step six: filling mixed gas into the space between the dry capacitor core and the outer sleeve of the dry sleeve to reach the technological requirement pressure value;
step seven: covering the outer sleeve of the dry-type sleeve, and after covering is finished, maintaining pressure of mixed gas in the dry-type sleeve and detecting leakage of the covered sleeve; if no missing point exists, the next step is carried out; if the leakage point exists, the leakage point is repaired, if the casing pipe needs to be reassembled after the leakage is repaired, the operation in the step one and the subsequent operation are returned, and if the casing pipe does not need to be reassembled, the operation in the step two and the subsequent operation are returned;
step eight: vacuumizing the space between the dry capacitor core and the outer sleeve of the dry sleeve to the vacuum degree required by the process;
step nine: injecting power cable insulating paste into a space between a dry capacitor core and an outer sleeve of the dry sleeve;
step ten: and carrying out factory test on the dry-type sleeve.
Preferably, the outer sleeve is a hollow composite outer sleeve or a ceramic outer sleeve.
Further preferably, the mixed gas in the sixth step and the seventh step is formed by mixing nitrogen and hydrogen.
Further preferably, in the second step, the water content of the compressed air is measured before the compressed air is filled, so that the water content is within the process requirement range.
The invention has the beneficial effects that:
the paste injection process of the dry-type casing pipe can obviously improve the quality control level of the dry-type casing pipe product and the qualification rate of the dry-type casing pipe product, reduce the paste injection cost, ensure the stable and reliable operation of the dry-type casing pipe and further reduce the product operation and maintenance cost.
Detailed Description
The present invention will be described in detail with reference to the following examples.
The embodiment is a dry-type sleeve paste injection process, which comprises the following steps:
the method comprises the following steps: the integral assembly of the sleeve is completed according to requirements;
step two: compressed air is filled into the space between the dry capacitor core and the outer sleeve of the dry sleeve to reach the technological requirement pressure value;
step three: maintaining the pressure of the compressed air in the dry-type sleeve and searching a leakage point; if no missing point exists, the next step is carried out; if the leakage point exists, the leakage point is repaired, if the casing pipe needs to be reassembled after the leakage is repaired, the first step and the subsequent operation are carried out, and if the casing pipe does not need to be reassembled, the second step and the subsequent operation are carried out;
step four: vacuumizing the space between the dry capacitor core and the outer sleeve of the dry sleeve to the vacuum degree required by the process;
step five: maintaining the pressure of the vacuum in the dry sleeve and performing vacuum leakage detection; if no missing point exists, the next step is carried out; if the leakage point exists, the leakage point is repaired, if the casing pipe needs to be reassembled after the leakage is repaired, the first step and the subsequent operation are carried out, and if the casing pipe does not need to be reassembled, the second step and the subsequent operation are carried out;
step six: filling mixed gas into the space between the dry capacitor core and the outer sleeve of the dry sleeve to reach the technological requirement pressure value;
step seven: covering the outer sleeve of the dry-type sleeve, and after covering is finished, maintaining pressure of mixed gas in the dry-type sleeve and detecting leakage of the covered sleeve; if no missing point exists, the next step is carried out; if the leakage point exists, the leakage point is repaired, if the casing pipe needs to be reassembled after the leakage is repaired, the operation in the step one and the subsequent operation are returned, and if the casing pipe does not need to be reassembled, the operation in the step two and the subsequent operation are returned;
step eight: vacuumizing the space between the dry capacitor core and the outer sleeve of the dry sleeve to the vacuum degree required by the process;
step nine: injecting power cable insulating paste into a space between a dry capacitor core and an outer sleeve of the dry sleeve;
step ten: and carrying out factory test on the dry-type sleeve.
Preferably, the outer sleeve is a hollow composite outer sleeve or a ceramic outer sleeve.
Further preferably, the mixed gas in the sixth step and the seventh step is formed by mixing nitrogen and hydrogen.
Further preferably, in the second step, the water content of the compressed air is measured before the compressed air is filled, so that the water content is within the process requirement range.
The paste injection process of the dry-type casing pipe can obviously improve the quality control level of the dry-type casing pipe product and the qualification rate of the dry-type casing pipe product, reduce the paste injection cost, ensure the stable and reliable operation of the dry-type casing pipe and further reduce the product operation and maintenance cost.
The above description is only a preferred embodiment of the present patent, and it should be noted that, for those skilled in the art, several modifications and decorations can be made without departing from the inventive concept, and these modifications and decorations should also be regarded as the protection scope of the present patent.
Claims (4)
1. A dry-type sleeve paste injection process is characterized in that: the method comprises the following steps:
the method comprises the following steps: the integral assembly of the sleeve is completed according to requirements;
step two: compressed air is filled into the space between the dry capacitor core and the outer sleeve of the dry sleeve to reach the technological requirement pressure value;
step three: maintaining the pressure of the compressed air in the dry-type sleeve and searching a leakage point; if no missing point exists, the next step is carried out; if the leakage point exists, the leakage point is repaired, if the casing pipe needs to be reassembled after the leakage is repaired, the first step and the subsequent operation are carried out, and if the casing pipe does not need to be reassembled, the second step and the subsequent operation are carried out;
step four: vacuumizing the space between the dry capacitor core and the outer sleeve of the dry sleeve to the vacuum degree required by the process;
step five: maintaining the pressure of the vacuum in the dry sleeve and performing vacuum leakage detection; if no missing point exists, the next step is carried out; if the leakage point exists, the leakage point is repaired, if the casing pipe needs to be reassembled after the leakage is repaired, the first step and the subsequent operation are carried out, and if the casing pipe does not need to be reassembled, the second step and the subsequent operation are carried out;
step six: filling mixed gas into the space between the dry capacitor core and the outer sleeve of the dry sleeve to reach the technological requirement pressure value;
step seven: covering the outer sleeve of the dry-type sleeve, and after covering is finished, maintaining pressure of mixed gas in the dry-type sleeve and detecting leakage of the covered sleeve; if no missing point exists, the next step is carried out; if the leakage point exists, the leakage point is repaired, if the casing pipe needs to be reassembled after the leakage is repaired, the operation in the step one and the subsequent operation are returned, and if the casing pipe does not need to be reassembled, the operation in the step two and the subsequent operation are returned;
step eight: vacuumizing the space between the dry capacitor core and the outer sleeve of the dry sleeve to the vacuum degree required by the process;
step nine: injecting power cable insulating paste into a space between a dry capacitor core and an outer sleeve of the dry sleeve;
step ten: and carrying out factory test on the dry-type sleeve.
2. The dry casing paste injection process according to claim 1, wherein the outer sleeve is a hollow composite outer sleeve or a porcelain outer sleeve.
3. The dry sleeve paste injection process according to claim 1, wherein the mixed gas in the sixth and seventh steps is a mixture of nitrogen and hydrogen.
4. The dry sleeve paste injection process according to claim 1, wherein the water content of the compressed air is measured before the compressed air is filled in the second step, so that the water content is within the process requirement range.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110782831.9A CN113690000B (en) | 2021-07-12 | 2021-07-12 | Dry-type sleeve paste injection process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110782831.9A CN113690000B (en) | 2021-07-12 | 2021-07-12 | Dry-type sleeve paste injection process |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113690000A true CN113690000A (en) | 2021-11-23 |
| CN113690000B CN113690000B (en) | 2023-04-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110782831.9A Active CN113690000B (en) | 2021-07-12 | 2021-07-12 | Dry-type sleeve paste injection process |
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| Country | Link |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013045397A1 (en) * | 2011-09-26 | 2013-04-04 | Alstom Technology Ltd | Method for filling gas-insulated electrical equipment |
| CN107932811A (en) * | 2017-11-24 | 2018-04-20 | 苏州翰为电气科技有限公司 | A kind of dry sleeve insulator vacuum aerating running gate system and its pouring procedure |
| CN207446035U (en) * | 2017-09-20 | 2018-06-05 | 沈阳和新套管有限公司 | A kind of gas mixing device of dry sleeve filler |
| CN112327091A (en) * | 2020-10-12 | 2021-02-05 | 广东电网有限责任公司广州供电局 | Dry-type sleeve testing method |
-
2021
- 2021-07-12 CN CN202110782831.9A patent/CN113690000B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013045397A1 (en) * | 2011-09-26 | 2013-04-04 | Alstom Technology Ltd | Method for filling gas-insulated electrical equipment |
| CN207446035U (en) * | 2017-09-20 | 2018-06-05 | 沈阳和新套管有限公司 | A kind of gas mixing device of dry sleeve filler |
| CN107932811A (en) * | 2017-11-24 | 2018-04-20 | 苏州翰为电气科技有限公司 | A kind of dry sleeve insulator vacuum aerating running gate system and its pouring procedure |
| CN112327091A (en) * | 2020-10-12 | 2021-02-05 | 广东电网有限责任公司广州供电局 | Dry-type sleeve testing method |
Non-Patent Citations (1)
| Title |
|---|
| 谢俊文等: "SF_6气体变压器用干式套管试验研究", 《电工技术》 * |
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| Publication number | Publication date |
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| CN113690000B (en) | 2023-04-11 |
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