CN205401704U - Tubular structure of minor diameter is with locking formula fast -assembling sealing device - Google Patents
Tubular structure of minor diameter is with locking formula fast -assembling sealing device Download PDFInfo
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- CN205401704U CN205401704U CN201521071107.1U CN201521071107U CN205401704U CN 205401704 U CN205401704 U CN 205401704U CN 201521071107 U CN201521071107 U CN 201521071107U CN 205401704 U CN205401704 U CN 205401704U
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- hollow bolt
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Abstract
Tubular structure of minor diameter is with locking formula fast -assembling sealing device, 2 individual separation semi -ring (7) is installed on recess reducing section (12) of the tubular structure of minor diameter (1), erection joint round pin (6) is gone up to separation semi -ring (7), insert in limit collar (5) connecting pin (6), make limit collar (5) closely block on separation semi -ring (7), separation semi -ring (7) card can not become flexible on recess reducing section (12) of the tubular structure of minor diameter (1) and come off, the tubular structure of minor diameter (1) is supported on the step of tube socket (8) through separation semi -ring (7). Graphite seal ring (4) are installed and are being prevented between change (3) and limit collar (5), and silver -plated processing has been carried out on the surface of preventing change (3), and the surface is bright and clean, and hollow bolt (2) when tightening, can not drive to prevent change (3) and rotate, avoid driving graphite seal ring (4) and rotate and the sealed face of graphite seal ring (4) of having worn and torn.
Description
Technical field
This utility model belongs to sealing device field, and being specifically related to minor diameter tubular-shaped structures use can locking type quick assembling sealing device.
Background technology
Measure system due to nuclear reactor to need core exit temperature, reactor core neutron fluence rate or reactor core water level are measured; some primary coolant circuit pipes need reactor out temperature is measured, so being provided with the tubular-shaped structures part such as detector or protecting tube on reactor pressure vessel or on pipeline, the above parameter are measured.
For the tubular-shaped structures part such as detector or protecting tube, it is typically on pressure vessel or primary coolant circuit pipe and base is set, tubular-shaped structures part is inserted and positioned on base, sealing structure is set between tubular-shaped structures part and base, sealing structure widely used at present is generally divided into forced sealing and self-energized seal two kinds, forced sealing is by securing member and base threaded engagement, pretightning force is provided to compress the mode of metallic gasket, the resilience that the shortcoming of this structure is metallic gasket is general, along with reactor temperature and pressure changes, this sealing structure is easy to leakage occur；nullSelf-energized seal is generally adopted utilization and separates half ring bearing tubular-shaped structures part，Utilize hollow bolt to compress graphite-seal ring and form the mode of radial seal，The shortcoming of the method is when the laterally inserted reactor of tubular-shaped structures part or pipeline，Separate semi-ring easily to occur when mounted coming off，Need to use aid to avoid separating semi-ring to come off，Installation process is more complicated，And this sealing structure mainly ensures the sealing effectiveness of sealing medium graphite-seal ring according to the screw-down torque of hollow bolt，The thrust provided due to reality is bigger with theoretical thrust deviation，Easily there is the situation of excessive or very few compression in graphite-seal ring，Thus affecting sealing effectiveness，And have certain distance between the hollow bolt of this sealing structure and base，More difficult anti-loose structure part is set，When the water flow impact pressure of reactor heating and cooling or pipeline is bigger，Easily occur that the screw thread of hollow bolt relaxes，The decrement making graphite-seal ring reduces，The pretightning force of graphite-seal ring is substantially reduced，Occur the hidden danger of leakage.
Utility model content
The purpose of this utility model be in that to propose a kind of minor diameter tubular-shaped structures with can locking type quick assembling sealing device, for the tubular-shaped structures parts such as the detector introduced in reactor or in pipeline or protecting tube are sealed.
nullThe technical solution of the utility model is as follows: a kind of minor diameter tubular-shaped structures is used can locking type quick assembling sealing device，Including hollow bolt、Expansion controlling ring-shaped insert、Graphite-seal ring、Limit collar、Connecting pin、Separate semi-ring and locking pin，Separate semi-ring to be arranged in the groove undergauge section of minor diameter tubular-shaped structures，Separate and semi-ring is installed connecting pin，Connecting pin inserts in limit collar，Limit collar is made closely to be stuck on separation semi-ring，Separation semi-ring is stuck in will not loose or dislocation in the groove undergauge section of minor diameter tubular-shaped structures，Minor diameter tubular-shaped structures is bearing on the step of base by separating semi-ring，Graphite-seal ring is arranged between expansion controlling ring-shaped insert and limit collar，Hollow bolt and base compressed graphite sealing ring，So that graphite-seal ring is filled in the gap between minor diameter tubular-shaped structures and base，Thus defining sealing，And the flange face laminating of hollow bolt and base，Can accurately control the decrement of graphite-seal ring to ensure sealing property，Hollow bolt head has locking groove，Locking pin is arranged in locking groove.
The surface of described expansion controlling ring-shaped insert has carried out silver-plated process, any surface finish, when hollow bolt is tightened, expansion controlling ring-shaped insert will not be driven to rotate, it is to avoid drive graphite-seal ring to rotate and the sealing surface of the graphite-seal ring that worn and torn.
Described locking pin is fixed on base flange face by locking spotweld, and the rotation limiting hollow bolt loosens, it is to avoid hollow bolt occurs that screw thread relaxes.
Described hollow bolt provides pretightning force compressed graphite sealing ring with base by threaded engagement.
Remarkable result of the present utility model is in that: the flange face of hollow bolt and base is fitted, can accurately control the decrement of graphite-seal ring to reach the seal request of graphite-seal ring, avoid and only rely on screw-down torque and be difficult to ensure that sealing property, and it is provided with locking pin, loosen with the lax rotation caused of screw thread avoiding hollow bolt.By arranging connecting pin and the limit collar of interference fit to separating semi-ring, it is to avoid separate coming off and scuffing to sealing surface of semi-ring, and facilitate sealing structure and install.
Accompanying drawing explanation
Fig. 1 is that minor diameter tubular-shaped structures described in the utility model use can locking type quick assembling sealing device schematic diagram
Fig. 2 is the A direction view of Fig. 1
Fig. 3 is the BB view of Fig. 1
In figure: 1 minor diameter tubular-shaped structures；2 hollow bolts；3 expansion controlling ring-shaped inserts；4 graphite-seal rings；5 limit collars；6 connecting pins；7 separate semi-ring；8 bases；9 coolant media；10 locking pins；11 locking spotwelds；12 groove undergauge sections；13 locking grooves
Detailed description of the invention
Minor diameter tubular-shaped structures is with can locking type quick assembling sealing device, it is made up of hollow bolt (2), expansion controlling ring-shaped insert (3), graphite-seal ring (4), limit collar (5), connecting pin (6), separation semi-ring (7) and locking pin (10), achieving and sealed on base (8) by minor diameter tubular-shaped structures (1), specific implementation method is as follows:
As shown in drawings, 2 separate semi-ring (7) and are arranged on groove undergauge section (12) of minor diameter tubular-shaped structures (1), separate and semi-ring (7) installs connecting pin (6), connecting pin (6) inserts in limit collar (5), limit collar (5) is made closely to be stuck in separation semi-ring (7), separate semi-ring (7) be stuck in groove undergauge section (12) of minor diameter tubular-shaped structures (1) on will not loose or dislocation, minor diameter tubular-shaped structures (1) is bearing on the step of base (8) by separation semi-ring (7).Graphite-seal ring (4) is arranged between expansion controlling ring-shaped insert (3) and limit collar (5), the surface of expansion controlling ring-shaped insert (3) has carried out silver-plated process, any surface finish, when hollow bolt (2) is tightened, expansion controlling ring-shaped insert (3) will not be driven to rotate, it is to avoid drive graphite-seal ring (4) to rotate and the sealing surface of the graphite-seal ring that worn and torn (4).Hollow bolt (2) provides pretightning force compressed graphite sealing ring (4) with base (8) by threaded engagement, so that graphite-seal ring (4) is filled in the gap between minor diameter tubular-shaped structures (1) and base (8), thus defining sealing, and the flange face of hollow bolt (2) and base (8) fits, can accurately control the decrement of graphite-seal ring (4) to ensure sealing property, hollow bolt (2) head has locking groove (13), locking pin (10) is arranged in locking groove (13), and it is fixed on base (8) flange face by locking spotweld (11), the rotation limiting hollow bolt (2) loosens, screw thread relaxes to avoid hollow bolt (2) to occur.
During installation sealing structure, have only to insert and be bearing on the flange face of base (8) by the minor diameter tubular-shaped structures (1) having been charged into expansion controlling ring-shaped insert (3), graphite-seal ring (4), limit collar (5), connecting pin (6) and separation semi-ring (7), tighten hollow bolt (2) to fit to base (8), locking pin (10) is arranged in locking groove (13), and locking pin (10) and base (8) are carried out spot welding anti-loosening locking.
Claims (4)
- null1. a minor diameter tubular-shaped structures use can locking type quick assembling sealing device，It is characterized in that: include hollow bolt (2)、Expansion controlling ring-shaped insert (3)、Graphite-seal ring (4)、Limit collar (5)、Connecting pin (6)、Separate semi-ring (7) and locking pin (10)，Separate semi-ring (7) to be arranged on groove undergauge section (12) of minor diameter tubular-shaped structures (1)，Separate and semi-ring (7) installs connecting pin (6)，Connecting pin (6) inserts in limit collar (5)，Limit collar (5) is made closely to be stuck in separation semi-ring (7)，Separation semi-ring (7) is stuck in will not loose or dislocation on groove undergauge section (12) of minor diameter tubular-shaped structures (1)，Minor diameter tubular-shaped structures (1) is bearing on the step of base (8) by separating semi-ring (7)，Graphite-seal ring (4) is arranged between expansion controlling ring-shaped insert (3) and limit collar (5)，Hollow bolt (2) and base (8) compressed graphite sealing ring (4)，So that graphite-seal ring (4) is filled in the gap between minor diameter tubular-shaped structures (1) and base (8)，Thus defining sealing，And the flange face of hollow bolt (2) and base (8) fits，Can accurately control the decrement of graphite-seal ring (4) to ensure sealing property，Hollow bolt (2) head has locking groove (13)，Locking pin (10) is arranged in locking groove (13).
- 2. a kind of minor diameter tubular-shaped structures according to claim 1 is with can locking type quick assembling sealing device, it is characterized in that: the surface of described expansion controlling ring-shaped insert (3) has carried out silver-plated process, any surface finish, when hollow bolt (2) is tightened, expansion controlling ring-shaped insert (3) will not be driven to rotate, it is to avoid drive graphite-seal ring (4) to rotate and the sealing surface of the graphite-seal ring that worn and torn (4).
- 3. a kind of minor diameter tubular-shaped structures according to claim 1 is with can locking type quick assembling sealing device, it is characterized in that: described locking pin (10) is fixed on base (8) flange face by locking spotweld (11), the rotation limiting hollow bolt (2) loosens, it is to avoid hollow bolt (2) occurs that screw thread relaxes.
- 4. according to a kind of minor diameter tubular-shaped structures described in claim 1 with can locking type quick assembling sealing device, it is characterised in that: described hollow bolt (2) provides pretightning force compressed graphite sealing ring (4) with base (8) by threaded engagement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521071107.1U CN205401704U (en) | 2015-12-21 | 2015-12-21 | Tubular structure of minor diameter is with locking formula fast -assembling sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521071107.1U CN205401704U (en) | 2015-12-21 | 2015-12-21 | Tubular structure of minor diameter is with locking formula fast -assembling sealing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205401704U true CN205401704U (en) | 2016-07-27 |
Family
ID=56450460
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521071107.1U Active CN205401704U (en) | 2015-12-21 | 2015-12-21 | Tubular structure of minor diameter is with locking formula fast -assembling sealing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205401704U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105605347A (en) * | 2016-04-01 | 2016-05-25 | 中国核动力研究设计院 | Lockable quick-installation seal structure for small-diameter tubular structures |
| CN106895149A (en) * | 2015-12-21 | 2017-06-27 | 中国核动力研究设计院 | Minor diameter tubular-shaped structures are used can locking type quick assembling sealing device |
-
2015
- 2015-12-21 CN CN201521071107.1U patent/CN205401704U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106895149A (en) * | 2015-12-21 | 2017-06-27 | 中国核动力研究设计院 | Minor diameter tubular-shaped structures are used can locking type quick assembling sealing device |
| CN105605347A (en) * | 2016-04-01 | 2016-05-25 | 中国核动力研究设计院 | Lockable quick-installation seal structure for small-diameter tubular structures |
| CN105605347B (en) * | 2016-04-01 | 2018-01-02 | 中国核动力研究设计院 | Minor diameter tubular-shaped structures are used can locking type quick assembling sealing structure |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |