CN220490316U - Testing device for gas tightness test of GIS casting pressure vessel - Google Patents

Testing device for gas tightness test of GIS casting pressure vessel Download PDF

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Publication number
CN220490316U
CN220490316U CN202322157243.3U CN202322157243U CN220490316U CN 220490316 U CN220490316 U CN 220490316U CN 202322157243 U CN202322157243 U CN 202322157243U CN 220490316 U CN220490316 U CN 220490316U
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China
Prior art keywords
helium
ball valve
gis
testing
transition
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Active
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CN202322157243.3U
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Chinese (zh)
Inventor
安凯
孙大永
刘童
姜丽丽
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Zhongke Lixiang Technology Co ltd
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Zhongke Lixiang Technology Co ltd
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E30/00Energy generation of nuclear origin
    • Y02E30/30Nuclear fission reactors

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  • Examining Or Testing Airtightness (AREA)

Abstract

The utility model discloses a testing device for testing the air tightness of a GIS casting pressure container, which comprises a vacuum box, a vacuum pump and a helium detection device, wherein a ball valve is arranged at the air inlet end of the vacuum pump in a communicated manner, a transition cylinder is arranged on the ball valve in a communicated manner, a corrugated pipe is arranged on the transition cylinder in a communicated manner, the corrugated pipe is connected with the vacuum box in a communicated manner through a connecting pipe, the helium detection device is connected with the transition cylinder in a communicated manner through a hose, and a miniature ball valve is arranged between the hose and the transition cylinder. The utility model adopts helium gas to be filled into the casting shell, the vacuum box is connected with the vacuum pump, so that the vacuum box is under negative pressure, the anti-air-intake ball valve is closed, the pneumatic helium detection mass spectrometer is used for setting leak detection values, and when the casting shell is defective and leakage occurs, the helium detection mass spectrometer is used for detecting that the leak detection values exceed the standard leak detection values in real time, an alarm sound is generated; when the alarm does not appear after the stability is carried out for 5min, the leak detection is qualified; the leakage detection device has high sensitivity to leakage detection, and can effectively ensure the leakage detection qualification rate of batch products during batch inspection.

Description

Testing device for gas tightness test of GIS casting pressure vessel
Technical Field
The utility model relates to the technical field of airtight test equipment, in particular to a test device for testing the air tightness of a GIS casting pressure container.
Background
GIS is an important device for ensuring the safe operation of a power system, and mainly comprises electric elements such as a breaker, a disconnecting switch, a bus and the like. GIS typically employ high pressure SF6 gas as its insulating medium and an aluminum alloy housing as its enclosure. Generally, the nominal SF6 inflation design pressure of the GIS is 0.5-0.7MPa.
The gas tightness requirement of the GIS casting pressure vessel is limited, the annual leakage rate is less than 5 per mill, the SF6 internal inflation leakage detection is adopted before the current improvement, the cost is high, and the leakage detection period is long.
Disclosure of Invention
The utility model aims to provide a testing device for testing the air tightness of a GIS casting pressure container.
In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows: the utility model provides a testing arrangement of GIS casting pressure vessel gas tightness inspection, includes vacuum chamber, vacuum pump and helium detection device, the ball valve is installed in the inlet end intercommunication of vacuum pump, and the transition section of thick bamboo is installed to the intercommunication on the ball valve, and the bellows is installed to the intercommunication on the transition section of thick bamboo, is connected through the connecting pipe intercommunication between bellows and the vacuum chamber, the helium detection device is connected with the transition section of thick bamboo intercommunication through the hose, install miniature ball valve between hose and the transition section of thick bamboo, the helium detection device is used for detecting helium concentration.
Preferably, the upper end and the lower end of the ball valve are fixedly provided with transition sealing ring plates, and the upper end and the lower end of the ball valve are in sealing connection with the transition cylinder and the air inlet end of the vacuum pump through the transition sealing ring plates.
Preferably, the helium detection apparatus is a helium detection mass spectrometer.
Preferably, the joints of the connecting pipe, the corrugated pipe, the transition barrel, the hose and the ball valve are all sealed through O-shaped sealing rings.
Preferably, the helium detection device is connected with an alarm through a PLC.
Preferably, an opening is arranged at the front side of the vacuum box, a sliding door is arranged in the opening, and the sliding door and the opening are sealed through a sealing rubber ring.
Compared with the prior art, the utility model has the advantages that:
the utility model adopts helium gas to be filled into the casting shell, the vacuum box is connected with the vacuum pump, so that the vacuum box is under negative pressure, the anti-air-intake ball valve is closed, the pneumatic helium detection mass spectrometer is used for setting leak detection values, and when the casting shell is defective and leakage occurs, the helium detection mass spectrometer is used for detecting that the leak detection values exceed the standard leak detection values in real time, an alarm sound is generated; when the alarm does not appear after the stability is carried out for 5min, the leak detection is qualified;
the leakage detection device has high sensitivity to leakage detection, and can effectively ensure the leakage detection qualification rate of batch products during batch inspection.
Drawings
In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a block diagram of a testing device for testing the tightness of a GIS casting pressure vessel.
In the figure: 1 vacuum box, 2 vacuum pump, 3 helium detection device, 31 hose, 4 connecting pipe, 5 bellows, 6 transition section of thick bamboo, 7 ball valves, 71 transition seal ring plate, 8 miniature ball valves.
Description of the embodiments
The preferred embodiments of the present utility model will be described in detail below with reference to the accompanying drawings so that the advantages and features of the present utility model can be more easily understood by those skilled in the art, thereby making clear and defining the scope of the present utility model.
Referring to fig. 1, the utility model provides a testing device for testing the air tightness of a GIS casting pressure container, which comprises a vacuum box 1, a vacuum pump 2 and a helium detection device 3, wherein a ball valve 7 is arranged at the air inlet end of the vacuum pump 2 in a communicating way, a transition cylinder 6 is arranged on the ball valve 7 in a communicating way, a corrugated pipe 5 is arranged on the transition cylinder 6 in a communicating way, the corrugated pipe 5 is connected with the vacuum box 1 in a communicating way through a connecting pipe 4, the helium detection device 3 is connected with the transition cylinder 6 in a communicating way through a hose 31, a miniature ball valve 8 is arranged between the hose 31 and the transition cylinder 6, and the helium detection device 3 is used for detecting the concentration of helium.
In this embodiment, the upper and lower ends of the ball valve 7 are fixedly provided with a transition sealing ring plate 71, and the upper and lower ends of the ball valve 7 are in sealing connection with the transition cylinder 6 and the air inlet end of the vacuum pump 2 through the transition sealing ring plate 71.
In this embodiment, the helium detecting device 3 is a helium detecting mass spectrometer, and can accurately detect the concentration of helium.
Further, in this embodiment, the joints of the connection pipe 4, the bellows 5, the transition tube 6, the hose 31, and the ball valve 7 are all sealed by O-rings.
Further, for the condition that the staff foundry goods can be reminded to the first time, in this embodiment, helium detection apparatus 3 is connected with the alarm through PLC.
Further, in order to avoid air leakage of the vacuum box 1, in this embodiment, an opening is provided at the front side of the vacuum box 1, a sliding door is installed in the opening, and the sliding door is sealed with the opening by a sealing rubber ring.
The specific operation steps are as follows: helium is filled into the casting shell, the internal pressure value of the helium reaches 0.5Mpa, the helium is kept stand for three minutes and then is moved into the matched vacuum box 1, the vacuum box 1 and the vacuum pump 2 are connected, the micro ball valve 8 is closed to seal the hose 31, the internal pressure of the vacuum box 1 reaches negative pressure, and the stable pressure increase is less than 0.2pa/min; closing the anti-ball valve 7 and opening the ball valve 8 to enable the hose 31 to be communicated, starting the helium detection mass spectrometer, setting a leak detection value, and sending out an alarm sound when the helium detection mass spectrometer detects that the leak detection value exceeds the standard leak detection value in real time when the inside of the casting shell is defective; and when the alarm does not appear after the stability is carried out for 5min, the leak detection is qualified.
Although the embodiments of the present utility model have been described with reference to the accompanying drawings, the patentees may make various modifications or alterations within the scope of the appended claims, and are intended to be within the scope of the utility model as described in the claims.

Claims (6)

1. The utility model provides a testing arrangement of GIS casting pressure vessel gas tightness inspection which characterized in that: the helium detector comprises a vacuum box, a vacuum pump and a helium detector, wherein a ball valve is installed at the air inlet end of the vacuum pump in a communicating manner, a transition barrel is installed on the ball valve in a communicating manner, a corrugated pipe is installed on the transition barrel in a communicating manner, the corrugated pipe is connected with the vacuum box in a communicating manner through a connecting pipe, the helium detector is connected with the transition barrel in a communicating manner through a hose, a miniature ball valve is installed between the hose and the transition barrel, and the helium detector is used for detecting helium concentration.
2. The test device for testing the tightness of the GIS casting pressure vessel according to claim 1, wherein: the upper end and the lower end of the ball valve are fixedly provided with transition sealing ring plates, and the upper end and the lower end of the ball valve are in sealing connection with the transition cylinder and the air inlet end of the vacuum pump through the transition sealing ring plates.
3. The test device for testing the tightness of the GIS casting pressure vessel according to claim 1, wherein: the helium detection device is a helium detection mass spectrometer.
4. The test device for testing the tightness of the GIS casting pressure vessel according to claim 1, wherein: the joints of the connecting pipe, the corrugated pipe, the transition barrel, the hose and the ball valve are all sealed through O-shaped sealing rings.
5. The test device for testing the tightness of the GIS casting pressure vessel according to claim 1, wherein: the helium detection device is connected with an alarm through a PLC.
6. The test device for testing the tightness of the GIS casting pressure vessel according to claim 1, wherein: the front side of the vacuum box is provided with an opening, a sliding door is arranged in the opening, and the sliding door and the opening are sealed through a sealing rubber ring.
CN202322157243.3U 2023-08-11 2023-08-11 Testing device for gas tightness test of GIS casting pressure vessel Active CN220490316U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202322157243.3U CN220490316U (en) 2023-08-11 2023-08-11 Testing device for gas tightness test of GIS casting pressure vessel

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202322157243.3U CN220490316U (en) 2023-08-11 2023-08-11 Testing device for gas tightness test of GIS casting pressure vessel

Publications (1)

Publication Number Publication Date
CN220490316U true CN220490316U (en) 2024-02-13

Family

ID=89829692

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202322157243.3U Active CN220490316U (en) 2023-08-11 2023-08-11 Testing device for gas tightness test of GIS casting pressure vessel

Country Status (1)

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CN (1) CN220490316U (en)

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