CN214944456U - Steam turbine lubricating oil tank plugging device - Google Patents
Steam turbine lubricating oil tank plugging device Download PDFInfo
- Publication number
- CN214944456U CN214944456U CN202121538752.5U CN202121538752U CN214944456U CN 214944456 U CN214944456 U CN 214944456U CN 202121538752 U CN202121538752 U CN 202121538752U CN 214944456 U CN214944456 U CN 214944456U
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- oil tank
- sealing
- end cover
- plugging device
- cover
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- Expired - Fee Related
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Abstract
The utility model relates to a turbine lubricating oil tank plugging device, which comprises a sealing end cover, an O-shaped ring, a handhole cover, a pneumatic sealing mechanism, a pressure measuring controller, a compressed air pipe and a pressure measuring probe; the sealing end cover is installed by using a bolt hole of an oil pump motor on the oil tank and is in contact sealing with the oil tank through an O-shaped ring; the hand hole cover is in threaded connection with the sealing end cover, and the hand hole cover and the sealing end cover are sealed by an O-shaped ring; the sealing end cover is provided with a pneumatic sealing mechanism, the air cylinder is connected with a pressure measuring controller through a compressed air pipe, and the pressure measuring controller is provided with a pressure measuring probe connected to the inside of the oil tank. The utility model discloses a steam turbine lubricating oil tank plugging device can effectively seal the hole of oil pump motor shaft coupling department to can detect the inside negative pressure value size of plugging device, so that drop into the pneumatic seal of second floor automatically, guarantee lubricating oil and outside air's complete isolation, prevent that dust, granule from getting into the inside oil that influences of oil tank.
Description
Technical Field
The utility model relates to a plugging device field, concretely relates to turbine lubricating oil tank plugging device.
Background
The lubricating oil system of the steam turbine is used for reducing friction between a bearing moving part and a bearing static part in the operation of a unit and simultaneously takes away heat generated by the friction, is an indispensable important part in a thermal power plant, and is related to the safe and stable operation of the steam turbine and auxiliary equipment. The oil quality of the lubricating oil is particularly critical, and the deterioration of the oil quality can reduce the lubricating performance, accelerate the aging of lubricating parts and seriously affect the normal operation of a unit.
When the lubricating oil system operates, the inside of the oil tank is usually in a negative pressure state. The lubricating oil pump is a submerged long-shaft pump, and an oil pump motor is installed on the oil tank shell. The couplings of the pump and the motor are embedded in the oil tank, and ventilation holes are formed in the periphery of the couplings so that heat generated by blast friction of the couplings can be taken away through negative pressure in the oil tank. However, when the oil pump motor needs to be overhauled when the lubricating oil system runs, the hole at the position of the coupler is exposed outside, and often, the hole can only be simply shielded, and a large amount of dust and particles enter the oil tank for a long time, so that the oil quality of the lubricating oil is greatly influenced.
SUMMERY OF THE UTILITY MODEL
The utility model aims at the not enough of above-mentioned prior art, provide a turbine lubricating oil tank plugging device.
In order to solve the technical problem, the utility model provides a technical scheme is:
a turbine lubricating oil tank plugging device comprises a sealing end cover, an O-shaped ring, a hand hole cover, a pneumatic sealing mechanism, a pressure measurement controller, a compressed air pipe and a pressure measurement probe; the sealing end cover is mounted by using a bolt hole of an oil pump motor on an oil tank, and is in contact sealing with the oil tank through an O-shaped ring; the hand hole cover is in threaded connection with the sealing end cover, and the hand hole cover and the sealing end cover are sealed by an O-shaped ring; the pneumatic sealing mechanism is composed of an air cylinder, a piston, a spring, a connecting rod, a connecting pin and a coupler vent hole sealing gasket, the lower end of the piston is connected with the piston rod and is arranged in the air cylinder, the spring is sleeved on the piston rod, the lower end of the piston rod penetrates through the air cylinder and is connected with the first connecting rod through the connecting pin, and the other end of the first connecting rod is installed on the sealing gasket connecting rod on the inner side wall of the oil tank through the connecting pin; the air cylinder is connected with a pressure measuring controller through a compressed air pipe, and the pressure measuring controller is provided with a pressure measuring probe connected to the inside of the oil tank.
The handhole cover is removed when the sealing end cover is installed and disassembled so as to reduce the pressure difference between the inside and the outside of the sealing end cover and facilitate installation.
Furthermore, the hand hole cover is provided with a hanging ring, so that the hand hole cover and the sealing end cover can be conveniently and integrally hoisted and carried.
When the internal pneumatic seal fails, the hand hole cover can be detached to be manually adjusted and repaired, or the pneumatic seal can be directly and manually put into operation.
Furthermore, a sealing gasket is arranged on the outer side of the sealing gasket connecting rod.
Furthermore, the upper end of the sealing gasket connecting rod is connected with a second connecting rod through a connecting pin, and the upper end of the second connecting rod is installed at the sealing end cover.
After the sealing end cover is installed, the pressure measuring probe is used for detecting the negative pressure value inside the sealing end cover, when the negative pressure reaches a higher set value, the controller can introduce compressed air into the upper cavity of the air cylinder, the compressed air overcomes the spring force to close the pneumatic sealing mechanism, and the oil tank plugging device forms secondary sealing.
Further, the pneumatic sealing mechanism is also sealed by an O-shaped ring at the assembly position of the compressed air and the sealing end cover.
Furthermore, the sealing gasket of the ventilation hole of the coupler and the O-shaped ring are made of nitrile rubber, so that the oil resistance is good.
Has the advantages that:
the utility model discloses a steam turbine lubricating oil tank plugging device can effectively seal the hole of oil pump motor shaft coupling department to can detect the inside negative pressure value size of plugging device, so that drop into the pneumatic seal of second floor automatically, guarantee lubricating oil and outside air's complete isolation, prevent that dust, granule from getting into the inside oil that influences of oil tank.
Drawings
FIG. 1: and (3) a structural schematic diagram of a closed state of a lubricating oil tank plugging device of the steam turbine.
FIG. 2: the structure schematic diagram of the opening state of the lubricating oil tank plugging device of the steam turbine.
FIG. 3: the structure schematic diagram is overlooked when the turbine lubricating oil tank plugging device is closed.
FIG. 4: the structure of the handhole cover is shown schematically.
FIG. 5: the partial enlarged view of the device for plugging the lubricating oil tank of the steam turbine.
In the figure: 1-sealing end cover, 2-O-shaped ring, 3-hand hole cover, 4-pressure measuring controller, 5-compressed air pipe, 6-pressure measuring probe, 7-bolt hole, 8-air cylinder, 9-piston, 10-spring, 11-first connecting rod, 12-connecting pin, 13-sealing gasket connecting rod, 14-second connecting rod, 15-sealing gasket, 16-coupler vent hole, 17-lifting ring, 18-oil tank shell, 19-hand hole cover mounting thread and 20-piston rod.
Detailed Description
The present invention will be described in further detail with reference to specific examples, which are provided for illustration only and are not intended to limit the scope of the present invention. In the description of the present invention, it should be noted that:
the terms "upper, lower, inner and outer" and the like refer to orientations and positional relationships illustrated in the drawings, which are used for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention.
Furthermore, terms such as "first, second, or third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. In the present invention, unless expressly stated or limited otherwise, terms such as "mounted, connected" are to be understood in a broad sense, for example: can be fixedly connected, detachably connected or integrally connected; they may be mechanically, electrically, or directly connected, or indirectly connected through intervening media, or may be interconnected between two elements.
The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to specific situations.
The utility model provides a turbine lubricating oil tank plugging device, which comprises a sealing end cover 1, an O-shaped ring 2, a hand hole cover 3, a pneumatic sealing mechanism, a pressure measuring controller 4, a compressed air pipe 5 and a pressure measuring probe 6; the sealing end cover 1 is installed by using a bolt hole 7 of an oil pump motor on an oil tank, and the sealing end cover 1 is in contact sealing with the oil tank through an O-shaped ring 2; the hand hole cover 3 is in threaded connection with the sealing end cover 1, and the hand hole cover and the sealing end cover are sealed by an O-shaped ring 2; and a pneumatic sealing mechanism is arranged on the sealing end cover 1.
The pneumatic sealing mechanism consists of an air cylinder 8, a piston 9, a spring 10, a connecting rod, a connecting pin 12 and a coupler vent hole sealing gasket 15, wherein the lower end of the piston 9 is connected with a piston rod 20 and is arranged in the air cylinder 8, the spring 10 is sleeved on the piston rod 20, the lower end of the piston rod 20 penetrates through the air cylinder 8 and then is connected with a first connecting rod 11 through the connecting pin 12, and the other end of the first connecting rod 11 is arranged on a sealing gasket connecting rod 13 on the inner side wall of the oil tank through the connecting pin 12; the air cylinder 8 is connected with a pressure measuring controller 4 through a compressed air pipe 5, and the pressure measuring controller 4 is provided with a pressure measuring probe 6 connected to the inside of the oil tank.
The handhole cover 3 is removed when the sealing end cover 1 is installed and disassembled so as to reduce the pressure difference between the inside and the outside of the sealing end cover 1 and facilitate installation.
Preferably, the hand hole cover 3 is provided with a hanging ring 17, so that the hand hole cover 3 and the sealing end cover 1 can be lifted and transported integrally.
When the internal pneumatic seal fails, the handhole cover 3 can be detached to be manually adjusted and repaired, or the pneumatic seal is directly and manually put in.
In the embodiment, the outside of the gasket connecting rod 13 is provided with a gasket 15.
In the embodiment, the upper end of the sealing gasket connecting rod 13 is connected with the second connecting rod 14 through the connecting pin 12, and the upper end of the second connecting rod 14 is installed at the sealing end cover 1.
After the sealing end cover 1 is assembled, the pressure measuring probe 6 is used for detecting the negative pressure value inside the sealing end cover, when the negative pressure reaches a higher set value, the controller can lead compressed air into the upper cavity of the air cylinder 8, the compressed air overcomes the force of the spring 10 to close the pneumatic sealing mechanism, and the oil tank plugging device forms secondary sealing.
In the embodiment, the pneumatic sealing mechanism is also sealed by the O-ring 2 at the assembly of the compressed air and the sealing end cover 1.
In the embodiment, the sealing gasket 15 of the ventilation hole of the coupler and the O-shaped ring 2 are made of nitrile rubber, so that the oil resistance is good.
The above description is only the preferred embodiment of the present invention, and is not intended to limit the present invention in any form, and any skilled person familiar with the art will not depart from the technical scope of the present invention, and the technical spirit of the present invention will be any simple modification, equivalent replacement, and improvement made by the above embodiments, and the like, all still belong to the technical scope of the present invention.
Claims (7)
1. The utility model provides a turbine lubricating oil tank plugging device which characterized in that: the device comprises a sealing end cover, an O-shaped ring, a handhole cover, a pneumatic sealing mechanism, a pressure measurement controller, a compressed air pipe and a pressure measurement probe; the sealing end cover is mounted by using a bolt hole of an oil pump motor on an oil tank, and is in contact sealing with the oil tank through an O-shaped ring; the hand hole cover is in threaded connection with the sealing end cover, and the hand hole cover and the sealing end cover are sealed by an O-shaped ring; the pneumatic sealing mechanism is composed of an air cylinder, a piston, a spring, a connecting rod, a connecting pin and a coupler vent hole sealing gasket, the lower end of the piston is connected with the piston rod and is arranged in the air cylinder, the spring is sleeved on the piston rod, the lower end of the piston rod penetrates through the air cylinder and is connected with the first connecting rod through the connecting pin, and the other end of the first connecting rod is installed on the sealing gasket connecting rod on the inner side wall of the oil tank through the connecting pin; the air cylinder is connected with a pressure measuring controller through a compressed air pipe, and the pressure measuring controller is provided with a pressure measuring probe connected to the inside of the oil tank.
2. The turbine lubricant oil tank plugging device of claim 1, wherein: the hand hole cover is provided with a hanging ring, so that the hand hole cover and the sealing end cover can be conveniently and integrally hoisted and carried.
3. The turbine lubricant oil tank plugging device of claim 1, wherein: and a sealing gasket is arranged on the outer side of the sealing gasket connecting rod.
4. The turbine lubricant oil tank plugging device of claim 1, wherein: the upper end of the sealing gasket connecting rod is connected with a second connecting rod through a connecting pin, and the upper end of the second connecting rod is installed at the sealing end cover.
5. The turbine lubricant oil tank plugging device of claim 1, wherein: after the sealing end cover is installed, the pressure measuring probe is used for detecting the negative pressure value inside the sealing end cover, when the negative pressure reaches a higher set value, the controller can introduce compressed air into the upper cavity of the air cylinder, the compressed air overcomes the spring force to close the pneumatic sealing mechanism, and the oil tank plugging device forms secondary sealing.
6. The turbine lubricant oil tank plugging device of claim 1, wherein: the pneumatic sealing mechanism is also sealed by an O-shaped ring at the assembly position of the compressed air and the sealing end cover.
7. The turbine lubricant oil tank plugging device according to any one of claims 1 to 6, wherein: the sealing gasket of the ventilation hole of the coupler and the O-shaped ring are made of nitrile rubber, and oil resistance is good.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121538752.5U CN214944456U (en) | 2021-07-07 | 2021-07-07 | Steam turbine lubricating oil tank plugging device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121538752.5U CN214944456U (en) | 2021-07-07 | 2021-07-07 | Steam turbine lubricating oil tank plugging device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214944456U true CN214944456U (en) | 2021-11-30 |
Family
ID=79073708
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121538752.5U Expired - Fee Related CN214944456U (en) | 2021-07-07 | 2021-07-07 | Steam turbine lubricating oil tank plugging device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214944456U (en) |
-
2021
- 2021-07-07 CN CN202121538752.5U patent/CN214944456U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| 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: 20211130 |