CN203516717U - Sealing structure of Venturi tube - Google Patents
Sealing structure of Venturi tube Download PDFInfo
- Publication number
- CN203516717U CN203516717U CN201320535918.7U CN201320535918U CN203516717U CN 203516717 U CN203516717 U CN 203516717U CN 201320535918 U CN201320535918 U CN 201320535918U CN 203516717 U CN203516717 U CN 203516717U
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- CN
- China
- Prior art keywords
- venturi tube
- sealing
- pull bar
- crossbeam
- sealing cover
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Abstract
The utility model discloses a sealing structure of a Venturi tube. The sealing structure comprises a pull rod, a transverse beam and a sealing cover, wherein the transverse beam is movably arranged at the bottom end of the pull rod and can rotate around the pull rod, and the transverse beam is erected on the root portion of the Venturi tube; the sealing cover is arranged at the top of the pull rod in a sleeved mode and is horizontally located at the top port of the Venturi tube. The sealing structure further comprises a plurality of rubber cushions which are arranged between the transverse beam and the Venturi tube. One end, arranged at one end of the outside of the sealing cover in an extending mode, of the pull rod is provided with a small transverse hole. The sealing structure is simple, convenient to operate, capable of sealing the Venturi tube independently, and easy to fix and disassemble.
Description
Technical field
The utility model relates to boiler, pressurized container, nuclear power pressure equipment, particularly a kind of Venturi tube sealing configuration.
Background technique
Nuclear island primary device steam generator needs to carry out nitrogen-filled seal in shipping and transportation process, and first side and second side keep vacuum and after dew point meets the demands, toward steam generator the inside, be filled with nitrogen, make it keep 34.5kPa to the malleation of 68.9 kPa.The all adapters of steam generator must be appropriate with pipe cap or plug seal, because structure and the size of each adapter are all not identical, must adopt different mechanical seal modes.
Steam (vapor) outlet structure comprises 7 Venturi tubes; Venturi tube bore is less but structure is special; material is nickel-base alloy; shorter apart from steam (vapor) outlet heavy caliber end face, after nuclear power product completion, should not adopt again welding manner sealing, must adopt mechanical seal; conventional seals mode is as direct sealing heavy caliber end face seal weak effect; if respectively to Venturi tube sealing often installing and operation inconvenience during unloading, have to be difficult for arranging and fill nitrogen and pressure gauge connection, be difficult for line up and the shortcoming such as protect.
Model utility content
The purpose of this utility model is to provide a kind of Venturi tube sealing configuration, and this apparatus structure is simple, easy to operate, can each Venturi tube is independent sealed, and easily fixing, quick detachable.
In order to realize above object, the utility model is achieved through the following technical solutions:
A Venturi tube sealing configuration, for sealing Venturi tube, is characterized in, comprises:
Pull bar;
Crossbeam, it is movably arranged on pull bar bottom, and can rotate around pull bar, and this beam erection is at the root of described Venturi tube;
Sealing cover, it is nested with at pull bar top, and level is positioned at the top ports of Venturi tube.
This structure also comprises several rubber pads, and it is separately positioned between crossbeam and Venturi tube.
Outside one end that described pull bar extension is arranged on sealing cover is provided with horizontal aperture.
This structure also comprises sealing gasket, and it is arranged between sealing cover and the top ports of Venturi tube.
This structure also comprises threaded pipe and thread cap;
Described threaded pipe is welded on the outer middle side part of sealing cover;
Described thread cap is connected with threaded pipe and covers on the top of pull bar.
The utility model compared with prior art, has the following advantages:
1, the combination with pull bar, crossbeam, sealing cover realizes independently fixing and mechanical seal of the single venturi mouth of pipe.
2, crossbeam can freely be rotated and be realized assembling and unloading operation fast by bearing pin.
3, by independently thread cap and pad, realizing pretension fast operates.
4, crossbeam has been avoided contacting with the mouth of pipe by rubber pad, and soldering point is also arranged on non-mouth of pipe district.
5, realized external instrumentation tap has been set on sealing configuration, and do not affected sealing effect.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of Venturi tube sealing configuration of the utility model;
Fig. 2 is that the utility model utilizes Venturi tube sealing configuration application structure schematic diagram;
Fig. 3 is that the utility model utilizes Venturi tube sealing configuration application structure schematic diagram;
Fig. 4 is that the utility model utilizes Venturi tube sealing configuration application structure schematic diagram;
Fig. 5 is that the utility model utilizes Venturi tube sealing configuration application structure schematic diagram;
Fig. 6 is that the utility model utilizes Venturi tube sealing configuration application structure schematic diagram..
Embodiment
Below in conjunction with accompanying drawing, by describing a preferably specific embodiment in detail, the utility model is further elaborated.
As shown in Figure 1, a kind of Venturi tube sealing configuration, for sealing Venturi tube 1, comprises: pull bar 2; Crossbeam 3, it is movably arranged on pull bar 2 bottoms, and can be around pull bar 2 rotations, and this crossbeam 3 is erected at the root of described Venturi tube 1; Sealing cover 4, it is nested with at pull bar 2 tops, and level is positioned at the top ports of Venturi tube 1; Several rubber pads 5, it is separately positioned between crossbeam 3 and Venturi tube 1; Sealing gasket 6, it is arranged between sealing cover 4 and the top ports of Venturi tube 1; Threaded pipe 7 and thread cap 8; Described threaded pipe 7 is welded on the outer middle side part of sealing cover 4; Thread cap 8 is connected with threaded pipe 7 and covers on the top of pull bar 2; Outside one end that pull bar 2 extensions are arranged on sealing cover 4 is provided with horizontal aperture 21.
In this enforcement, need to seal 7 Venturi tubes 1, 7 sealing configurations that the utility model provides of corresponding employing, each pull bar 2 is as fixing and force structure, pull bar 2 connects a crossbeam 3 towards inner end by bearing pin 11, crossbeam 3 can be around bearing pin 11 activities, easy-to-operat, crossbeam 3 is as the fixing device of Venturi tube 1 root, on it, be screwed rubber pad 5 and avoid crossbeam contact Venturi tube 1 port, while sending into Venturi tube 1 port, crossbeam 3 can be presented and pull bar 2 parastates, send into rear cross beam 3 naturally droops with pull bar 2 and is 90 degree states under Action of Gravity Field.For convenience of operation, a horizontal aperture 21 is set towards outer end at pull bar 2, when pull bar 2 being stretched into mouth of pipe inside and carries out sealing cover 4 assembling and wait operation, can penetrate in horizontal aperture 21 and strain operation by cord or galvanized wire, when this device of unloading, can carry out similar operations equally, can effectively crossbeam 3 and pull bar 2 be fixed and be tightened up, prevent that pull bar 2 from falling into mouth of pipe inside simultaneously.
At the outer bore of Venturi tube 1, place seals by sealing cover 4 and sealing gasket 6, when nut 9 is tightened, sealing cover 4 and crossbeam 3 just can tighten up gradually and reach sealing effect, due to 7 Venturi tubes 1 have independently sealing configuration and bore little, it is best that sealing effect can reach.For avoiding the nitrogen that tightens up nut 9 places to reveal, at a threaded pipe 7 of sealing cover 4 center welding, and after thread cap 8 coordinates with threaded pipe 7, carry out seal weld and eliminate last leakage blind spot.For arranging, fill nitrogen interface and the manometric mouth of pipe, 2 air outlets need be set on sealing cover 4, and on thread cap 8, opening be set, welding ball valve joint is for extension instrument equipment.
An encapsulating method that utilizes Venturi tube sealing configuration, the method comprises:
Step 2, rotating tension bar 2 allow crossbeam 3 can freely hang down into pull bar 2 in vertical state, and make to be arranged on rubber pad 5 on crossbeam 3 towards Venturi tube 1 root (referring to Fig. 3);
Step 4, by galvanized wire and pull bar 2 fitting tights lids 4, and compresses operation at sealing cover 4 peripheries, nut 9 and pad 10 are carried out to pretension, fully contact venturi mouth of pipe exterior edge face is also stressed even to make sealing gasket 6, withdraws afterwards galvanized wire (referring to Fig. 5);
Step 5, thread cap 8 are entangled to sealing strip with threaded pipe 7 and assemble, and carry out seal weld at thread cap 8 and threaded pipe 7 assembling edge one circles, to there being the mouth of pipe of other interfaces can carry out other corresponding assembly manipulations (referring to Fig. 6).
In sum, a kind of Venturi tube sealing configuration of the utility model and encapsulating method, this apparatus structure is simple, easy to operate, can each Venturi tube is independent sealed, and easily fixing, quick detachable.
Although content of the present utility model has been done detailed introduction by above preferred embodiment, will be appreciated that above-mentioned description should not be considered to restriction of the present utility model.Those skilled in the art, read after foregoing, for multiple modification of the present utility model with to substitute will be all apparent.Therefore, protection domain of the present utility model should be limited to the appended claims.
Claims (5)
1. a sealing configuration for Venturi tube, for sealing Venturi tube (1), is characterized in that, comprises:
Pull bar (2);
Crossbeam (3), it is movably arranged on pull bar (2) bottom, and can be around pull bar (2) rotation, and this crossbeam (3) is erected at the root of described Venturi tube (1);
Sealing cover (4), it is nested with at pull bar (2) top, and level is positioned at the top ports of Venturi tube (1).
2. the sealing configuration of Venturi tube as claimed in claim 1, is characterized in that, also comprises several rubber pads (5), and it is separately positioned between crossbeam (3) and Venturi tube (1).
3. the sealing configuration of Venturi tube as claimed in claim 1, is characterized in that, outside one end that described pull bar (2) extension is arranged on sealing cover (4) is provided with horizontal aperture (21).
4. the sealing configuration of Venturi tube as claimed in claim 1, is characterized in that, also comprises sealing gasket (6), and it is arranged between sealing cover (4) and the top ports of Venturi tube (1).
5. the sealing configuration of Venturi tube as claimed in claim 1, is characterized in that, also comprises threaded pipe (7) and thread cap (8);
Described threaded pipe (7) is welded on the outer middle side part of sealing cover (4);
Described thread cap (8) is connected with threaded pipe (7) and covers on the top of pull bar (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320535918.7U CN203516717U (en) | 2013-08-30 | 2013-08-30 | Sealing structure of Venturi tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320535918.7U CN203516717U (en) | 2013-08-30 | 2013-08-30 | Sealing structure of Venturi tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203516717U true CN203516717U (en) | 2014-04-02 |
Family
ID=50375649
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320535918.7U Expired - Fee Related CN203516717U (en) | 2013-08-30 | 2013-08-30 | Sealing structure of Venturi tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203516717U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103410965A (en) * | 2013-08-30 | 2013-11-27 | 上海电气核电设备有限公司 | Venturi tube sealing structure and sealing method |
-
2013
- 2013-08-30 CN CN201320535918.7U patent/CN203516717U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103410965A (en) * | 2013-08-30 | 2013-11-27 | 上海电气核电设备有限公司 | Venturi tube sealing structure and sealing method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140402 Termination date: 20190830 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |