CN107515075B - Device for detecting ring sealing performance of graphite sealing ring - Google Patents
Device for detecting ring sealing performance of graphite sealing ring Download PDFInfo
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- CN107515075B CN107515075B CN201610431295.7A CN201610431295A CN107515075B CN 107515075 B CN107515075 B CN 107515075B CN 201610431295 A CN201610431295 A CN 201610431295A CN 107515075 B CN107515075 B CN 107515075B
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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
- G01M3/04—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
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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
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
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Abstract
The invention relates to a device for detecting the ring sealing performance of a graphite sealing ring, which is used for detecting the ring sealing performance of the graphite sealing ring to be detected, and comprises a base, a liner tube, a support ring, a pressing sleeve, an upper cover, a pressing block and a pressing plate, wherein the liner tube is sleeved in a cavity of the base and supported by the base, the support ring is positioned on the inner wall of the liner tube and is used for placing the graphite sealing ring to be detected, a step-shaped structure is arranged below the pressing sleeve, the support ring and the graphite sealing ring to be detected are pressed in the axial direction, the liner tube is pressed in the radial direction, the upper cover is placed on the pressing sleeve and is used for pressing the pressing sleeve, and the pressing block is used for pressing the upper cover; when the device uses, will await measuring the graphite sealing ring and place on the lock ring, will press the cover to push down lock ring and the graphite sealing ring that awaits measuring, will go up the upper cover and press the cover tightly, press the cover to compress tightly by the pressure piece, place the base and detect at the valve test bench, or detect pedestal connection blind plate. Compared with the prior art, the invention has the advantages of simple structure, convenient use, high detection accuracy, high detection efficiency and the like.
Description
Technical Field
The invention relates to a sealing performance detection device, in particular to a device for detecting the ring sealing performance of a graphite sealing ring.
Background
The graphite sealing ring is mainly used as a sealing assembly on a valve, for example, chinese patent CN 205155214U discloses a high-temperature-resistant upper-mounted ball valve which comprises a valve body, a sealing assembly, a spring seat, an adjusting nut, a valve seat and a valve core, wherein a first step, a second step and a third step are formed in the valve body, a fixed disc and the valve seat are mounted in the first step, the fixed disc is connected with the tail part of the valve seat through an anti-rotation pin, a cavity is formed between the valve seat and the valve body, a sealing assembly, a gasket, a spring seat and an adjusting nut are arranged in the cavity, the sealing assembly is mounted between the second step and the valve seat, the sealing assembly is composed of a plurality of compression-molded high-purity flexible graphite sealing rings, the gasket and the spring seat are mounted between the third step and the valve seat, the adjusting nut is in threaded connection with the valve seat, and a sealing surface of the head part of the valve seat is connected with the valve core. The flexible sealing ring is used in the upper-mounted ball valve disclosed by the patent to form a sealing assembly.
Because seal assembly is influencing the sealing performance of ball valve, and seal assembly many on the ball valve is all constituteed by flexible graphite sealing washer, consequently detects the sealing performance of graphite sealing washer, and at present detects the sealing performance of graphite sealing washer and carries out the leakproofness with the ball valve after assembling the graphite sealing washer on the ball valve again and detect, needs assemble and dismantle the ball valve like this, and detection efficiency is low.
Therefore, a device for detecting the ring sealing performance of the graphite sealing ring before the ball valve is assembled is lacked at present, so that the working efficiency is improved, and the assembling and disassembling times of the ball valve are reduced.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provide the device for detecting the ring seal performance of the graphite seal ring, which has the advantages of simple structure, convenience in detection and high detection accuracy.
The purpose of the invention can be realized by the following technical scheme:
the utility model provides a device for detecting graphite sealing ring seals performance detects the graphite sealing ring's that awaits measuring ring seals performance, the device includes:
a base: comprises a cavity body which is through from top to bottom, an upper connecting plate and a lower connecting plate which are positioned on the outer wall of the cavity body, and a supporting platform is arranged in the cavity body;
lining pipe: the liner tube is sleeved in the cavity of the base and supported by the supporting table of the base, and the inner wall of the liner tube is provided with the supporting table for supporting the supporting ring;
ring supporting: the graphite sealing ring to be tested is placed on the supporting table positioned on the inner wall of the liner tube;
pressing a sleeve: a step-shaped structure is arranged below the support ring, the support ring and the graphite sealing ring to be tested are pressed in the axial direction, and the liner tube is pressed in the radial direction;
an upper cover: the pressing sleeve is placed on the pressing sleeve and used for pressing the pressing sleeve;
briquetting: the lower end of the upper cover is pressed against the upper cover and is used for pressing the upper cover;
pressing a plate: the upper connecting plate is connected with the pressing block and is connected with the upper connecting plate of the base through an upper stud and an upper nut;
when the device uses, will await measuring the graphite sealing ring and place on the lock ring, will press the cover to push down lock ring and the graphite sealing ring that awaits measuring, will go up the upper cover and press the cover tightly, press the cover to compress tightly by the pressure piece, place the base and detect at the valve test bench, or detect pedestal connection blind plate.
The upper part of the liner tube is provided with a check ring, the check ring presses the liner tube in the axial direction, and the inner wall and the outer wall are respectively clung to the pressing sleeve and the base in the radial direction, so that the upper end and the lower end of the liner tube are respectively limited by the check ring and the supporting table of the base and are fixed in the vertical direction.
The upper surface of the support ring is provided with an inclined plane matched with the lower surface of the graphite sealing ring to be detected, and the graphite sealing ring to be detected is placed on the support ring during detection.
The inner wall of the liner tube is a smooth surface.
The outer wall of the liner tube is tightly attached to the inner wall of the base, and a second O-shaped ring is arranged at the contact part of the liner tube and the inner wall of the base.
The liner tube can be replaced to adapt to testing of balls with different specifications and matched valve seats.
And a third O-shaped ring is arranged at the contact part of the upper cover and the pressing sleeve.
The first use mode of the device is that when the base is placed on a valve test bed for detection, the lower connecting plate of the base is directly connected and fixed with the valve test bed, and the ring sealing performance of the graphite sealing ring to be detected is detected.
The device adopts a second use mode, namely when the base is connected with the blind plate to detect the ring sealing performance of the graphite sealing ring to be detected, the blind plate is connected with the lower connecting plate of the base through the lower stud and the lower nut, the blind plate, the inner wall of the base, the inner wall of the pressing sleeve and the lower side of the upper cover form a sealing cavity, and the blind plate is provided with an air inlet for introducing high-pressure air into the sealing cavity.
A first O-shaped ring is arranged at the joint of the blind plate and the base.
When the device is used in a second use mode, the upper nut is screwed, the graphite sealing ring to be detected is compressed to the required height through the pressing plate, the pressing block, the upper cover and the pressing sleeve, the required pressure is established in the sealing cavity through the air inlet and is kept for the specified time, then the leakage detection agent is coated above the check ring to detect the leakage condition, if the leakage detection agent at the check ring has bubbles, the sealing performance of the graphite sealing ring to be detected is poor, the requirement is not met, and if the leakage detection agent at the check ring has no bubbles, the sealing performance of the graphite sealing ring to be detected is better, and the detection requirement is met.
Compared with the prior art, the invention has the following advantages and beneficial effects:
1. the detection device is convenient to use, the ring sealing performance of the graphite sealing ring to be detected can be detected before the graphite sealing ring to be detected is assembled on the ball valve, and the tightness detection after the ball valve is assembled is not needed, so that the detection efficiency is greatly improved.
2. When the detection device is used, the graphite sealing ring to be detected is convenient to install, the detection can be carried out through the auxiliary valve test bed, and the ring sealing performance of the graphite sealing ring to be detected can be detected by introducing high-pressure gas through the blind plate.
Drawings
FIG. 1 is a schematic structural diagram of a detection device according to the present invention.
Reference numbers in the figures: 1. the device comprises a lower stud, 2, a lower nut, 3, a blind plate, 4, a first O-shaped ring, 5, a base, 6, a second O-shaped ring, 7, a liner tube, 8, a support ring, 9, a graphite sealing ring to be detected, 10, a pressing sleeve, 11, a third O-shaped ring, 12, an upper cover, 13, a retainer ring, 14, a pressing block, 15, a pressing plate, 16, an upper nut, 17, an upper stud, 18 and an air inlet.
Detailed Description
The invention is described in detail below with reference to the figures and specific embodiments.
Examples
A device for detecting the ring sealing performance of a graphite sealing ring is used for detecting the ring sealing performance of a graphite sealing ring 9 to be detected, as shown in figure 1, and comprises a base 5, a liner tube 7, a support ring 8, a pressing sleeve 10, an upper cover 12, a pressing block 14 and a pressing plate 15. The base 5 comprises a cavity which is through up and down, an upper connecting plate and a lower connecting plate which are positioned on the outer wall of the cavity, and a supporting platform is arranged in the cavity; the liner tube 7 is sleeved in the cavity of the base 5 and supported by the supporting table of the base 5, and the inner wall of the liner tube 7 is provided with the supporting table for supporting the supporting ring 8; the inner wall of the liner tube 7 is smooth. The outer wall of the liner tube 7 is closely attached to the inner wall of the base 5, and a second O-shaped ring 6 is arranged at the contact part of the liner tube 7 and the inner wall of the base 5. The liner can be replaced to adapt to testing of balls of different specifications and matched valve seats. A retainer ring 13 is arranged above the liner tube 7, the retainer ring 13 presses the liner tube 7 in the axial direction, and the inner wall and the outer wall of the liner tube 7 are respectively attached to the pressing sleeve 10 and the base 5 in the radial direction, so that the upper end and the lower end of the liner tube 7 are respectively limited by the retainer ring 13 and a support table of the base 5 and are fixed in the vertical direction. The support ring 8 is positioned on the support table on the inner wall of the liner tube 7 and is used for placing a graphite sealing ring 9 to be tested; the inclined plane matched with the lower surface of the graphite sealing ring 9 to be detected is arranged on the upper surface of the supporting ring 8, and the graphite sealing ring 9 to be detected is placed on the supporting ring 8 during detection. A step-shaped structure is arranged below the pressing sleeve 10, the support ring 8 and the graphite sealing ring 9 to be tested are pressed in the axial direction, and the liner tube 7 is pressed in the radial direction. The upper cover 12 is placed on the pressing sleeve 10 for pressing the pressing sleeve 10, and a third O-shaped ring 11 is arranged at the contact part of the upper cover 12 and the pressing sleeve 10. The pressing block 14 is connected with the pressing plate 15, and the lower end presses the upper cover 12 to press the upper cover 12; the pressing plate 15 is connected with the pressing block 14 and is connected with the upper connecting plate of the base 5 through an upper stud 17 and an upper nut 16.
The first application mode of this device is about to base 5 and places when valve test bench detects, directly is connected the lower connecting plate of base 5 with valve test bench fixedly, carries out the detection that awaits measuring 9 ring seal performances of graphite sealing ring.
This device second kind of using-way, be about to base 5 and blind plate 3 be connected and to await measuring the graphite sealing ring 9 ring seal performance detection time, blind plate 3 is connected with the lower connecting plate of base 5 through double-screw bolt 1 and lower nut 2 down, and the blind plate 3 is provided with first O shape circle 4 with base 5 junction. And the blind plate 3, the inner wall of the base 5, the inner wall of the pressing sleeve 10 and the lower side of the upper cover 12 enclose a sealed cavity, and an air inlet 18 for introducing high-pressure air into the sealed cavity is formed in the blind plate 3.
When the device is used in a second use mode, the nut is screwed, the graphite sealing ring 9 to be detected is compressed to the required height through the pressure plate 15, the pressure block 14, the upper cover 12 and the pressure sleeve 10, the required pressure is established in the sealing cavity through the air inlet 18 and is kept for the specified time, then the leakage detection agent is coated above the check ring 13 to detect the leakage condition, if the leakage detection agent at the position of the check ring 13 has bubbles, the sealing performance of the graphite sealing ring 9 to be detected is poor, the requirement is not met, and if the leakage detection agent at the position of the check ring 13 has no bubbles, the sealing performance of the graphite sealing ring 9 to be detected is better, and the detection requirement is met.
The embodiments described above are described to facilitate an understanding and use of the invention by those skilled in the art. It will be readily apparent to those skilled in the art that various modifications to these embodiments may be made, and the generic principles described herein may be applied to other embodiments without the use of the inventive faculty. Therefore, the present invention is not limited to the above embodiments, and those skilled in the art should make improvements and modifications within the scope of the present invention based on the disclosure of the present invention.
Claims (9)
1. The utility model provides a device for detecting graphite sealing ring seals performance detects the ring that awaits measuring graphite sealing ring (9) seals performance, its characterized in that, the device includes:
base (5): comprises a cavity body which is through from top to bottom, an upper connecting plate and a lower connecting plate which are positioned on the outer wall of the cavity body, and a supporting platform is arranged in the cavity body;
liner (7): the liner tube is sleeved in the cavity of the base (5) and supported by the supporting table of the base (5), and the inner wall of the liner tube (7) is provided with the supporting table for supporting the supporting ring (8);
support ring (8): the graphite sealing ring (9) to be tested is placed on the support table positioned on the inner wall of the liner tube (7);
pressing sleeve (10): a step-shaped structure is arranged below, the support ring (8) and the graphite sealing ring (9) to be tested are pressed in the axial direction, and the liner tube (7) is pressed in the radial direction;
upper cover (12): is arranged on the pressing sleeve (10) and is used for pressing the pressing sleeve (10);
briquette (14): is connected with the pressure plate (15), and the lower end of the pressure plate presses the upper cover (12) for pressing the upper cover (12);
platen (15): is connected with the pressing block (14) and is connected with an upper connecting plate of the base (5) through an upper stud (17) and an upper nut (16);
when the device is used, the graphite sealing ring (9) to be detected is placed on the supporting ring (8), the pressing sleeve (10) is pressed against the supporting ring (8) and the graphite sealing ring (9) to be detected, the upper cover (12) is pressed against the pressing sleeve (10), the pressing sleeve (10) is pressed by the pressing block (14), the base (5) is placed on the valve test bed to be detected, or the base (5) is connected with the blind plate (3) to be detected.
2. The device for detecting the ring sealing performance of the graphite sealing ring according to claim 1, wherein a retaining ring (13) is arranged above the liner tube (7), the retaining ring (13) axially presses the liner tube (7), and the inner wall and the outer wall of the liner tube (7) are respectively attached to the pressing sleeve (10) and the base (5) in the radial direction, so that the upper end and the lower end of the liner tube (7) are respectively limited by the retaining ring (13) and a supporting table of the base (5) and fixed in the vertical direction.
3. The device for detecting the ring sealing performance of the graphite sealing ring according to claim 1, wherein the upper surface of the supporting ring (8) is provided with an inclined surface matched with the lower surface of the graphite sealing ring (9) to be detected, and the graphite sealing ring (9) to be detected is placed on the supporting ring (8) during detection.
4. The device for detecting the ring sealing performance of the graphite sealing ring according to claim 1, wherein the inner wall of the liner tube (7) is smooth.
5. The device for detecting the ring sealing performance of the graphite sealing ring according to claim 1, wherein the outer wall of the liner tube (7) is closely attached to the inner wall of the base (5), and a second O-shaped ring (6) is arranged at the contact part of the liner tube (7) and the inner wall of the base (5).
6. The device for detecting the ring sealing performance of the graphite sealing ring according to claim 1, wherein a third O-shaped ring (11) is arranged at the contact part of the upper cover (12) and the pressing sleeve (10).
7. The device for detecting the ring sealing performance of the graphite sealing ring according to claim 1, wherein when the base (5) is placed on a valve test bed for detection, the lower connecting plate of the base (5) is directly connected and fixed with the valve test bed for detection of the ring sealing performance of the graphite sealing ring (9) to be detected.
8. The device for detecting the ring sealing performance of the graphite sealing ring according to claim 1, wherein when the pedestal (5) is connected with the blind plate (3) to detect the ring sealing performance of the graphite sealing ring (9) to be detected, the blind plate (3) is connected with a lower connecting plate of the pedestal (5) through a lower stud (1) and a lower nut (2), the blind plate (3), the inner wall of the pedestal (5), the inner wall of the pressing sleeve (10) and the lower side of the upper cover (12) form a sealing cavity, and the blind plate (3) is provided with an air inlet (18) for introducing high-pressure gas into the sealing cavity.
9. The device for detecting the ring sealing performance of the graphite sealing ring according to claim 8, wherein a first O-shaped ring (4) is arranged at the joint of the blind plate (3) and the base (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610431295.7A CN107515075B (en) | 2016-06-17 | 2016-06-17 | Device for detecting ring sealing performance of graphite sealing ring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610431295.7A CN107515075B (en) | 2016-06-17 | 2016-06-17 | Device for detecting ring sealing performance of graphite sealing ring |
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| Publication Number | Publication Date |
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| CN107515075A CN107515075A (en) | 2017-12-26 |
| CN107515075B true CN107515075B (en) | 2023-04-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610431295.7A Active CN107515075B (en) | 2016-06-17 | 2016-06-17 | Device for detecting ring sealing performance of graphite sealing ring |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109883614B (en) * | 2019-03-14 | 2024-02-27 | 上海市特种设备监督检验技术研究院 | Ball valve sealing seat test die and use method |
| CN111947851B (en) * | 2020-08-18 | 2022-07-08 | 濮阳市恒信橡塑有限公司 | Detection apparatus for high pressure seal circle |
| CN113514198A (en) * | 2021-07-30 | 2021-10-19 | 重庆川仪调节阀有限公司 | Flexible graphite sealing ring sealing performance experimental device and testing method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103091046A (en) * | 2012-11-13 | 2013-05-08 | 沈阳黎明航空发动机(集团)有限责任公司 | Motor graphite end face seal device seal test jig |
| CN103900768A (en) * | 2014-04-11 | 2014-07-02 | 苏州纽威阀门股份有限公司 | Multifunctional seal ring leakage detecting device |
| CN203948672U (en) * | 2014-07-15 | 2014-11-19 | 盐城思达德民力阀门有限公司 | A kind of Novel self sealing gate valve |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120261890A1 (en) * | 2011-04-18 | 2012-10-18 | Hageman David C | Pressure seal |
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2016
- 2016-06-17 CN CN201610431295.7A patent/CN107515075B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103091046A (en) * | 2012-11-13 | 2013-05-08 | 沈阳黎明航空发动机(集团)有限责任公司 | Motor graphite end face seal device seal test jig |
| CN103900768A (en) * | 2014-04-11 | 2014-07-02 | 苏州纽威阀门股份有限公司 | Multifunctional seal ring leakage detecting device |
| CN203948672U (en) * | 2014-07-15 | 2014-11-19 | 盐城思达德民力阀门有限公司 | A kind of Novel self sealing gate valve |
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| CN107515075A (en) | 2017-12-26 |
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