CN205101050U - Prevent steam turbine axle gland leak -off device - Google Patents
Prevent steam turbine axle gland leak -off device Download PDFInfo
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- CN205101050U CN205101050U CN201520660637.3U CN201520660637U CN205101050U CN 205101050 U CN205101050 U CN 205101050U CN 201520660637 U CN201520660637 U CN 201520660637U CN 205101050 U CN205101050 U CN 205101050U
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- steam turbine
- gland
- seal system
- air
- gap location
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Abstract
The utility model relates to a prevent steam turbine axle gland leak -off device. Still there is not now a device of can fundamentally solving steam turbine axle gland leak -off problem. The utility model discloses prevent steam turbine axle gland leak -off device includes the steam turbine that is provided with gland seal system, and its characteristics are: still include the air compressor machine for storing highly -compressed air that the air compressor machine produced and the gas holder that carries out the steady voltage to highly -compressed air, being used for carrying on the air dryer of intensive drying to the highly -compressed air from gas holder output, it spout and forms the highly -compressed air field outside gland seal system to gland seal system to be used for locates the injector set with the bearing seal clearance that reaches the purpose that stops the sealed steam of gland seal system external leakage, gas holder and air compressor machine pass through the tube coupling, and air dryer and gas holder pass through the tube coupling, and bearing seal clearance department's injector set and air dryer pass through the tube coupling, and bearing seal clearance department injector set distributes near gland seal system. The utility model has the advantages of simple structure, fundamentally solves the problem of steam turbine axle gland leak -off.
Description
Technical field
The utility model relates to one and prevents turbine shaft leak sealing vapour device.
Background technique
Along with the continuous operation of thermal power generation unit, turbine shaft seal gap can be increasing, inside and outside shaft seal, Steam loss constantly increases, cause the situation that working medium runs off, vacuum declines, turbine efficiency is caused to decline, especially gland packing leakage can cause turbine shafting badly damaged to the pollution of turbo-engine lube, and produces serious accident.
At present, those skilled in the art are in order to solve the problem of turbine shaft leak sealing vapour, usually the mode that steam turbine gland system itself is improved all is adopted, if publication date is on 04 16th, 2014, publication number is in the Chinese patent of CN203547804U, disclose a kind of aeroseal formula steam turbine gland system, and publication date is on November 01st, 2006, publication number is in the Chinese patent of CN2833118, disclose a kind of gland seal circuit of steam turbine, all that steam turbine gland system itself is improved, cause the complex structure of steam turbine gland system, be difficult to carry out upgrading to the existing steam turbine using, also the problem fundamentally solving turbine shaft leak sealing vapour is difficult to.
Also do not have now a kind of structure simple, fundamentally can solve the device of turbine shaft leak sealing vapour problem.
Model utility content
The purpose of this utility model is to overcome above shortcomings in prior art, and provides a kind of structure simple, and reasonable in design, design is unique, and what fundamentally can solve turbine shaft leak sealing vapour problem prevents turbine shaft leak sealing vapour device.
The technical scheme in the invention for solving the above technical problem is: this prevents turbine shaft leak sealing vapour device from comprising the steam turbine being provided with gland seal system, its structural feature is: also comprise the air compressor for generation of high-pressure air, for storing high-pressure air that air compressor produces and high-pressure air being carried out to the gas holder of voltage stabilizing, for carrying out fully dry air drier to the high-pressure air exported from gas holder, for carrying out to the gland seal system of steam turbine jet and forming high-pressure air field to reach the shaft seal gap location nozzle sets of the object stoping the outside leakage sealed steam of gland seal system outside gland seal system, described gas holder is connected by pipeline with air compressor, described air drier is connected by pipeline with gas holder, described shaft seal gap location nozzle sets is connected by pipeline with air drier, described shaft seal gap location nozzle sets is distributed near the gland seal system of steam turbine, and this shaft seal gap location nozzle sets and gland seal system coordinate.
As preferably, the utility model also comprises valve, on the pipeline of described valve installation between air drier and shaft seal gap location nozzle sets.
As preferably, shaft seal gap location nozzle sets described in the utility model is distributed in the both sides of steam turbine, and this shaft seal gap location nozzle sets is positioned at nozzle quantity on the every side of steam turbine all in two or more.
As preferably, the quantity of valve described in the utility model is in two or more.
A kind of use described prevent turbine shaft leak sealing vapour device from carrying out prevent turbine shaft leak sealing vapour method, its feature is: described in prevent the step of turbine shaft leak sealing vapour method as follows: air compressor produces the pressurized air of high pressure, pressurized air is after the gas storage voltage stabilizing of gas holder and the abundant drying of air drier, by Pipeline transport to shaft seal gap location nozzle sets, carry out jet by shaft seal gap location nozzle sets to the gland seal system of steam turbine, thus form high-pressure air field outward at gland seal system, reach the object stoping the outside leakage sealed steam of gland seal system.
As preferably, shaft seal gap location nozzle sets described in the utility model is more than or equal to the vapor pressure in the gland seal system of steam turbine outward at the pressure of the high-pressure air field that gland seal system is formed.
As preferably, method described in the utility model prevents the steam in the gland seal system of steam turbine from leaking and leaks the lubricating oil system of rear steam contamination steam turbine, thus play and prevent from steam in steam turbine from leaking outside causing unnecessary steam to run off, prevent steam turbine vacuum from declining, improve safety in operation and the efficiency of steam turbine.
The utility model compared with prior art, have the following advantages and effect: 1, shaft seal gap location nozzle sets effectively stops steam in gland seal system to external leakage outward in the high_voltage isolation air field that the gland seal system of steam turbine produces, improve the sealing effect of gland seal system, overcome the Universal Problems that steam-turbine working medium runs off and vacuum declines, specifically avoid turbo-engine lube pollution problem; 2, relevant equipment purchasing and mounting cost low, reduce cost, be conducive to promotion and application; 3, input of the present utility model can improve the safe operating life of steam turbine and gland seal system, and improves the working efficiency of steam turbine; 4, structure is very simple, design is unique, the mode adopting the gland seal system outer high-pressure air field formed to be pushed down by the steam in gland seal system, not only reduces the performance requirement of steam turbine to gland seal system, and fundamentally solves the problem of turbine shaft leak sealing vapour; 5, can carry out upgrading at the steam turbine used to existing easily, expand applicable surface.
Accompanying drawing explanation
Fig. 1 is the structural representation preventing turbine shaft leak sealing vapour device in the utility model embodiment.
In figure: 1, air compressor; 2, gas holder; 3, air drier; 4, shaft seal gap location nozzle sets; 5, steam turbine.
Embodiment
Below in conjunction with accompanying drawing, also by embodiment, the utility model is described in further detail, and following examples are that the utility model is not limited to following examples to explanation of the present utility model.
Embodiment.
See Fig. 1, prevent turbine shaft leak sealing vapour device from comprising the steam turbine 5 being provided with gland seal system in the present embodiment, valve, for generation of the air compressor 1 of high-pressure air, for storing high-pressure air that air compressor 1 produces and high-pressure air being carried out to the gas holder 2 of voltage stabilizing, for carrying out fully dry air drier 3 to the high-pressure air exported from gas holder 2, for carrying out to the gland seal system of steam turbine 5 jet and forming high-pressure air field to reach the shaft seal gap location nozzle sets 4 of the object stoping the outside leakage sealed steam of gland seal system outside gland seal system.
Gas holder 2 in the present embodiment is connected by pipeline with air compressor 1, and air drier 3 is connected by pipeline with gas holder 2, and shaft seal gap location nozzle sets 4 is connected by pipeline with air drier 3.Shaft seal gap location nozzle sets 4 is distributed near the gland seal system of steam turbine 5, this shaft seal gap location nozzle sets 4 and gland seal system coordinate, when making shaft seal gap location nozzle sets 4 carry out jet to the gland seal system of steam turbine 5, high-pressure air field can be formed outward at gland seal system.On the pipeline of valve installation between air drier 3 and shaft seal gap location nozzle sets 4.
Under normal circumstances, in the present embodiment, shaft seal gap location nozzle sets 4 is distributed in the both sides of steam turbine 5, and this shaft seal gap location nozzle sets 4 is positioned at nozzle quantity on the every side of steam turbine 5 all in two or more; The quantity of valve is in two or more.
What in the present embodiment, use prevented turbine shaft leak sealing vapour device from carrying out prevents the step of turbine shaft leak sealing vapour method as follows: air compressor 1 produces the pressurized air of high pressure, pressurized air is after the gas storage voltage stabilizing of gas holder 2 and the abundant drying of air drier 3, by Pipeline transport to shaft seal gap location nozzle sets 4, carry out jet by shaft seal gap location nozzle sets 4 to the gland seal system of steam turbine 5, the general position of leaking vapour situation that mainly there will be in gland seal system is carried out jet, thus form high-pressure air field outward at gland seal system, reach the object stoping the outside leakage sealed steam of gland seal system.
Under normal circumstances, shaft seal gap location nozzle sets 4 is more than or equal to the vapor pressure in the gland seal system of steam turbine 5 outward at the pressure of the high-pressure air field that gland seal system is formed.
Prevent turbine shaft leak sealing vapour method from preventing the steam in the gland seal system of steam turbine 5 from leaking and leaking the lubricating oil system of rear steam contamination steam turbine 5 in the present embodiment, thus play and prevent from steam in steam turbine 5 from leaking outside causing unnecessary steam to run off, prevent steam turbine 5 vacuum from declining, improve safety in operation and the efficiency of steam turbine 5.
The turbine shaft leak sealing vapour device that prevents in the present embodiment produces high pressure dry air by setting up a set of air compressor system, form a high_voltage isolation air field outward to stop common gland seal system steam leakage phenomenon by shaft seal gap location nozzle sets 4 at the gland seal system of steam turbine 5, and Leakage prevention steam contamination steam turbine lubricant oil causes steam turbine major accident.
In addition, it should be noted that, the specific embodiment described in this specification, the shape, institute's title of being named etc. of its parts and components can be different, and the above content described in this specification is only to the explanation of the utility model structure example.The equivalence change that structure, feature and principle described in all foundation the utility model inventional idea are done or simple change, be included in the protection domain of the utility model patent.The utility model person of ordinary skill in the field can make various amendment or supplements or adopt similar mode to substitute to described specific embodiment; only otherwise depart from structure of the present utility model or surmount this scope as defined in the claims, protection domain of the present utility model all should be belonged to.
Claims (4)
1. one kind prevents turbine shaft leak sealing vapour device, comprise the steam turbine (5) being provided with gland seal system, it is characterized in that: also comprise the air compressor (1) for generation of high-pressure air, for storing high-pressure air that air compressor (1) produces and high-pressure air being carried out to the gas holder (2) of voltage stabilizing, for carrying out fully dry air drier (3) to the high-pressure air exported from gas holder (2), for carrying out to the gland seal system of steam turbine (5) jet and forming high-pressure air field outward to reach the shaft seal gap location nozzle sets (4) of the object stoping the outside leakage sealed steam of gland seal system at gland seal system, described gas holder (2) is connected by pipeline with air compressor (1), described air drier (3) is connected by pipeline with gas holder (2), described shaft seal gap location nozzle sets (4) is connected by pipeline with air drier (3), described shaft seal gap location nozzle sets (4) is distributed near the gland seal system of steam turbine (5), and this shaft seal gap location nozzle sets (4) and gland seal system coordinate.
2. according to claim 1ly prevent turbine shaft leak sealing vapour device, it is characterized in that: also comprise valve, on the pipeline of described valve installation between air drier (3) and shaft seal gap location nozzle sets (4).
3. according to claim 1ly prevent turbine shaft leak sealing vapour device, it is characterized in that: described shaft seal gap location nozzle sets (4) is distributed in the both sides of steam turbine (5), this shaft seal gap location nozzle sets (4) is positioned at nozzle quantity on the every side of steam turbine (5) all in two or more.
4. according to claim 2ly prevent turbine shaft leak sealing vapour device, it is characterized in that: the quantity of described valve is in two or more.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520660637.3U CN205101050U (en) | 2015-08-30 | 2015-08-30 | Prevent steam turbine axle gland leak -off device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520660637.3U CN205101050U (en) | 2015-08-30 | 2015-08-30 | Prevent steam turbine axle gland leak -off device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205101050U true CN205101050U (en) | 2016-03-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520660637.3U Active CN205101050U (en) | 2015-08-30 | 2015-08-30 | Prevent steam turbine axle gland leak -off device |
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| Country | Link |
|---|---|
| CN (1) | CN205101050U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111120022A (en) * | 2019-12-11 | 2020-05-08 | 福州和特新能源有限公司 | Device and method for preventing steam turbine shaft seal from leaking steam |
-
2015
- 2015-08-30 CN CN201520660637.3U patent/CN205101050U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111120022A (en) * | 2019-12-11 | 2020-05-08 | 福州和特新能源有限公司 | Device and method for preventing steam turbine shaft seal from leaking steam |
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