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
- Authority
- 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.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 29
- 238000002347 injection Methods 0.000 title claims abstract description 19
- 239000007924 injection Substances 0.000 title claims abstract description 19
- 238000001514 detection method Methods 0.000 claims abstract description 6
- 239000003990 capacitor Substances 0.000 claims description 16
- 239000007789 gas Substances 0.000 claims description 9
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 239000002131 composite material Substances 0.000 claims description 5
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 3
- 239000001257 hydrogen Substances 0.000 claims description 3
- 229910052739 hydrogen Inorganic materials 0.000 claims description 3
- 229910052757 nitrogen Inorganic materials 0.000 claims description 3
- 238000012360 testing method Methods 0.000 claims description 3
- 229910052573 porcelain Inorganic materials 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims 1
- 238000012423 maintenance Methods 0.000 abstract description 4
- 238000012797 qualification Methods 0.000 abstract description 4
- 238000003908 quality control method Methods 0.000 abstract description 3
- 238000009413 insulation Methods 0.000 description 3
- 239000000919 ceramic Substances 0.000 description 2
- 238000005034 decoration Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
-
- 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
-
- 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
-
- 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
-
- 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
Landscapes
- 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 |
Family
ID=78576956
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110782831.9A Active CN113690000B (en) | 2021-07-12 | 2021-07-12 | Dry-type sleeve paste injection process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113690000B (en) |
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》 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113690000B (en) | 2023-04-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101609102B (en) | Power frequency withstand voltage and partial discharge test terminal structure of medium-low voltage crosslinked cable | |
| CN105469957B (en) | Vacuum glue soaks fiber explosion-proof type Oil-impregnated Paper Condenser Bushing in History | |
| CN109768509B (en) | Elbow type joint special for electrified repair of power cable, repair device and method | |
| CN113690000B (en) | Dry-type sleeve paste injection process | |
| CN104362786A (en) | Insulation structure and method for 200-grade low-voltage motor loosely-embedded winding | |
| CN204142901U (en) | A kind of high voltage power cable test device | |
| CN205319004U (en) | Vacuum rubber soaks fibre explosion -proof type oil paper capacitance graded bushing | |
| CN109524218A (en) | A kind of explosion-proof casing of ultra-high/extra-high voltage gas-insulated transformer class with buffer air chamber | |
| CN209561165U (en) | An EHV/UHV gas insulated transformer type explosion-proof bushing adopting an isobaric isolation gas chamber | |
| CN109559879B (en) | Gas-insulated transformer sleeve with explosion-proof disaster-reducing function | |
| CN218585745U (en) | Coil cascade type 220kV environment-friendly explosion-proof current transformer | |
| CN108736407A (en) | Glue soaks fiber dry-type capacitance type GIS casings through walls | |
| CN103196638A (en) | Closed composite apparatus rationing leakage detecting method | |
| CN206740911U (en) | A kind of European plug cable voltage test tool of high pressure | |
| CN206432707U (en) | A kind of vacuum glue soaks fibers at low temperature superconductive current limiter dry sleeve | |
| CN204834173U (en) | Intelligent exhaust cable pyrocondensation cap | |
| CN111524659A (en) | Method for repairing unqualified insulation resistance of flexible mineral insulated metal sheathed cable | |
| CN209183345U (en) | A high-voltage lead wire insulation auxiliary device | |
| CN101577172B (en) | Stress cone type dry sleeve of transformer | |
| CN106710788A (en) | Oil immersed explosion-proof transformer for pit | |
| CN113340073B (en) | On-site drying method and drying system for epoxy impregnated paper transformer | |
| CN119132804A (en) | An inflatable transformer for offshore wind power tower nacelle and operation method thereof | |
| Xiu et al. | Analysis of 750kV Main Transformer High Voltage Side Bushing Faults Based on Multi-Detection Technology | |
| CN205122312U (en) | Glue and soak fibre dry -type GIS sleeve pipe | |
| CN218100936U (en) | Composite insulation capacitance type transformer bushing |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |