CN204402966U - A kind of plug-in type inflation sealing strip - Google Patents
A kind of plug-in type inflation sealing strip Download PDFInfo
- Publication number
- CN204402966U CN204402966U CN201520020038.5U CN201520020038U CN204402966U CN 204402966 U CN204402966 U CN 204402966U CN 201520020038 U CN201520020038 U CN 201520020038U CN 204402966 U CN204402966 U CN 204402966U
- Authority
- CN
- China
- Prior art keywords
- sealing strip
- mouth
- plug
- female end
- inflatable chamber
- 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.)
- Expired - Fee Related
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- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The utility model relates to a kind of plug-in type inflation sealing strip, comprises inflatable chamber, and sealing strip is overall open circle structure; The two ends of sealing strip are respectively arranged with oedoeagus mouth and female end mouth; Described oedoeagus mouth can insert in female end mouth; The outer rim central authorities of sealing strip are provided with the pore with inflatable chamber UNICOM; The inner edge of inflatable chamber is provided with sealing surface, and outer rim is provided with stationary plane.The utility model, by the design of negative and positive port plug in construction, increases bond area when boning, and reduces bonding difficulty, improves and be once bonded to power, improve the sealability of sealing strip entirety; Pump shaft need not be sling when installing sealing strip by the utility model, and can directly change, installation and maintenance is very convenient.
Description
Technical field
The utility model relates to the gentle field of sealing technology of water-stop, is specifically related to a kind of plug-in type inflation sealing strip, is mainly used in nuclear power station sea water circulating pump at present, also extends on other similar main equipments while solution pump shaft water-stop.
Background technique
The extensive use in multiple machinery of inflation sealing strip product, but traditional sealing strip mostly is hollow closed type structure, large-scale machinery is particularly installed on nuclear power station sea water circulating pump and changes extremely inconvenient.On current sea water circulating pump, external similar products structure is mainly divided into two kinds: a kind of is hollow closed type structure, and another kind is Open architecture, and two ends are flat mouth, by heating stick high temperature bonding during use.The former, when installing and change, needs pump shaft and drive motor entirety to sling, according to statistics, often lift an average cost about 2,000,000, and during more gaining dress, this unit generation power can only drop to half under normal circumstances, causes great material resources to lose; The latter, when installing and change, requires adhesion technique extreme harsh, careless slightly, will dismantle heavily sticky.Sea water circulating pump is that China just started domestic main equipment in recent years, and safe and reliable seal fitting urgently occurs at home.
Summary of the invention
For solving the technical problem of existing existence, the purpose of this utility model is to provide a kind of plug-in type inflation sealing strip, solves current open sealing strip port bonding difficulty large, is bonded to power low; Installation and maintenance complex procedures, the technical problem that airtight and watertight is not good.
For achieving the above object, the technical solution of the utility model is:
A kind of plug-in type inflation sealing strip, described sealing strip is the open circle structure of hollow, comprises inflatable chamber, and the two ends of described sealing strip are respectively arranged with oedoeagus mouth and female end mouth; Described oedoeagus mouth can insert in female end mouth; The outer rim central authorities of described sealing strip are provided with the pore with inflatable chamber UNICOM; The inner edge of described inflatable chamber is provided with sealing surface, and outer rim is provided with stationary plane.
The section of described oedoeagus mouth and female end mouth is D font structure, and oedoeagus mouth (1) coordinates with female end mouth (2) plug-in type.
Described sealing strip section is D font structure.
The beneficial effects of the utility model are:
1. by the design of negative and positive port plug in construction, increasing bond area when boning, reducing bonding difficulty, improving and be once bonded to power;
2. pump shaft need not be sling when installing sealing strip, can directly change, installation and maintenance is very convenient;
3. the design of negative and positive port plug in construction increases bond area and Adhesion force, improves the sealability of sealing strip entirety;
4. the cross-sectional configuration of sealing strip ensure that sealing strip can be fixed on pump cover reliably, prevents pump shaft from rotating the eddy current produced and is pulled by sealing strip, and then " dying of a sudden illness " phenomenon occurs.
Accompanying drawing explanation
Fig. 1 is overall structure schematic diagram of the present utility model;
Fig. 2 is the A-A profile in Fig. 1, i.e. oedoeagus mouth schematic diagram;
Fig. 3 is the B-B profile in Fig. 1, i.e. female end mouth schematic diagram;
Fig. 4 is the C-C profile in Fig. 1;
In figure, 1-oedoeagus mouth, 2-female end mouth, 3-pore, 4-stationary plane, 5-sealing surface, 6-inflatable chamber.
Embodiment
Below in conjunction with accompanying drawing to the utility model further instruction, as Fig. 1, Fig. 2, shown in Fig. 3 and Fig. 4, a kind of plug-in type inflation sealing strip, described sealing strip is the open circle structure of hollow, comprise inflatable chamber 6, the two ends of described sealing strip are respectively arranged with positive port one and female end mouth 2; Described positive port one can insert in female end mouth 2; The outer rim central authorities of described sealing strip are provided with the pore 3 with inflatable chamber 6 UNICOM; The inner edge of described inflatable chamber 6 is provided with sealing surface 5, and outer rim is provided with stationary plane 4.
The section of described positive port one and female end mouth 2 is D font structure, and oedoeagus mouth coordinates with female end mouth plug-in type.
Described sealing strip section is D font structure.
The utility model inflation sealing strip, is embedded in the seal of pump shaft periphery, after pump shaft stops the rotation, certain pressurized air is filled with in sealing strip inside, make it expand, the sealing strip after expansion holds pump shaft tightly, prevents the press water of bottom by the gap of pump shaft and the pump housing is gushed.It is an open circular in a pre-installation, as shown in Figure 1; Be inserted in female end mouth 2 by positive port one during installation, be bonded to as a whole closed annulus by adhesive, its cross-sectional configuration is D font, and as shown in Figure 2, Figure 3 and Figure 4, wherein sealing surface 5 is adjacent to pump shaft after inflating; Sealing strip is fixed on pump shaft by gland by stationary plane 4; When pump shaft rotates, sealing surface 5 and pump shaft have certain interval, ensure that the press water of bottom can gush, above to reduce the frictional heat between pump shaft and packing; When pump shaft stops the rotation, the air flue of pressurized air on pump cover, valve enter sealing strip inside, fit tightly after making it expand with pump shaft, prevent the positions such as base pressure is waterborne gushes, the gear-box of corrosion water pump.Under the air pressure conditions of 0.2MPa, Expansion sealing band can seal the press water that 10 arrive 15m head, and pressurize 30min, has allowed the micro-leakage such as seepage, water clock, but has not allowed press water to gush out continuously; Under the air pressure conditions of 0.3MPa, Expansion sealing band can seal the press water that 20 arrive 25m head, and pressurize 30min, has allowed the micro-leakage such as seepage, water clock, but has not allowed press water to gush out continuously.Sealing strip two ends are respectively positive port one and female end mouth 2, are enclosed on pump shaft during installation by sealing strip, and negative and positive port is plugged in together, stick with glue agent to bond, suppress sealing strip after abundant bonding, under the air pressure conditions of 0.2Mpa, the pressure drop in its 30min is no more than 0.02Mpa.
Plug-in type inflation sealing strip of the present utility model, selects the rubber of sea water resistance performance and bond properties excellence as material of main part, through special compounding, makes material have excellent incompressible deformability and rebound elasticity.Sealing strip can hold pump shaft tightly, the press water of sealed bottom when inflating; Sealing strip can be kept in the center rapidly after venting, ensures that sealing surface 5 and pump shaft have certain interval, prevents pump shaft and sealing surface 5 to occur to rub the generation of phenomenon of even dying of a sudden illness.
Following table lists usability of the present utility model:
Open type structure of the present utility model makes will sea water circulating pump entirety not fallen when sealing strip is installed and change, and shortens engineering time and maintenance cost greatly; Its plug in construction increases bond area and Adhesion force, optimizes adhesion technique, improves sealing strip overall sealing performance.
The utility model can directly apply on Present Domestic Yangjiang, the red sea water circulating pump of nuclear power station along the river, also extends on other similar main equipments while solution pump shaft watertight.
Claims (3)
1. a plug-in type inflation sealing strip, comprises inflatable chamber (6), it is characterized in that: described sealing strip is overall open circle structure; The two ends of described sealing strip are respectively arranged with oedoeagus mouth (1) and female end mouth (2); Described oedoeagus mouth (1) can insert in female end mouth (2); The outer rim central authorities of described sealing strip are provided with the pore (3) with inflatable chamber (6) UNICOM; The inner edge of described inflatable chamber (6) is provided with sealing surface (5), and outer rim is provided with stationary plane (4).
2. plug-in type inflation sealing strip according to claim 1, is characterized in that: the section of described oedoeagus mouth (1) and female end mouth (2) is D font structure, and oedoeagus mouth (1) coordinates with female end mouth (2) plug-in type.
3. plug-in type inflation sealing strip according to claim 1, is characterized in that: described sealing strip section is D font structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520020038.5U CN204402966U (en) | 2015-01-13 | 2015-01-13 | A kind of plug-in type inflation sealing strip |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520020038.5U CN204402966U (en) | 2015-01-13 | 2015-01-13 | A kind of plug-in type inflation sealing strip |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204402966U true CN204402966U (en) | 2015-06-17 |
Family
ID=53426831
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520020038.5U Expired - Fee Related CN204402966U (en) | 2015-01-13 | 2015-01-13 | A kind of plug-in type inflation sealing strip |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204402966U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114427987A (en) * | 2020-09-28 | 2022-05-03 | 中国石油化工股份有限公司 | Rock core sealing and storing device, gas taking device and sampling method |
-
2015
- 2015-01-13 CN CN201520020038.5U patent/CN204402966U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114427987A (en) * | 2020-09-28 | 2022-05-03 | 中国石油化工股份有限公司 | Rock core sealing and storing device, gas taking device and sampling 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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150617 Termination date: 20220113 |