CN205779047U - A kind of generator unit shaft envelope heater - Google Patents
A kind of generator unit shaft envelope heater Download PDFInfo
- Publication number
- CN205779047U CN205779047U CN201620459797.6U CN201620459797U CN205779047U CN 205779047 U CN205779047 U CN 205779047U CN 201620459797 U CN201620459797 U CN 201620459797U CN 205779047 U CN205779047 U CN 205779047U
- Authority
- CN
- China
- Prior art keywords
- heater
- differential pressure
- gland heater
- generator unit
- pressure transmitter
- 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
Links
Abstract
The utility model discloses a kind of generator unit shaft envelope heater, including gland heater, differential pressure transmitter and Electrically operated gate, differential pressure transmitter is arranged on the top of gland heater, and is connected with DCS control system；Electrically operated gate is arranged at gland heater condensed water gateway.Cannot automatically exit from when this utility model effectively solves existing gland heater internal hemorrhage due to trauma running, condense water gateway manually operated door manually from reach to close the most oversize can not be in time problem out of service for gland heater.
Description
Technical field
This utility model relates to generating set technical field, particularly relates to a kind of generator unit shaft envelope heater.
Background technology
Gland heater is to reclaim gland packing leakage and utilize its heat to carry out the device of heat-setting water, reduces energy loss, improves the heat exchanger of generatine set heat efficiency.
For a long time, due to aspects such as design, manufacture, installation and operations, the situation of heater leakage occurs repeatedly, and becomes the key factor affecting large-sized unit equivalent available factor.This not only affects the steady of large-sized unit and sends out, Man Fa, and because feed temperature declines, makes the thermal efficiency of whole unit reduce, and have impact on the normal performance of large-sized unit efficient low-consume superiority.
In the case of internal hemorrhage due to trauma occurs in gland heater, gland heater water level rises at short notice, it is impossible to realize automatically controlling gateway, pass door out of service.The water level of gland heater refers to the hydrophobic water level of gland heater.The gland heater upper shaft envelope back-steam mouth of pipe and the much the same height of extraction opening of axial sealing blower fan, if the water level of gland heater is too high, flood the extraction opening of blower fan, so axial sealing blower fan be possible to extract out be not gas but steam water interface, make axial sealing blower fan overload, will result in motor time serious and burn out.Simultaneously as axle envelope back-steam is dependent on interior and axle envelope back-steam mother's pipe the micro-pressure-difference of gland heater enters gland heater, if the water level of gland heater is too high, axle envelope back-steam will be made the most smooth, its pressure is made to raise, because being self sealss time more than unit 60% rated load, its steam loss is the most relevant with the power of unit, interior pressure is added without obvious relation with axle, therefore shaft seal overflow standing-meeting is opened greatly, so can increase the thermic load of condenser, if overflow station has reached full-gear, still can not maintain and gently then make axle envelope vapour direct-axis overflow to air, axle envelope vapour mother's pipe safety door action is will also cause time serious.
Utility model content
The purpose of this utility model is aiming at the situation of above-mentioned prior art, a kind of generator unit shaft envelope heater is provided, cannot automatically exit from when solving existing gland heater internal hemorrhage due to trauma running, condense water gateway manually operated door manually from reach to close the most oversize can not be in time problem out of service for gland heater.
The purpose of this utility model is achieved through the following technical solutions: a kind of generator unit shaft envelope heater, including gland heater, also including n platform differential pressure transmitter and m Electrically operated gate, described differential pressure transmitter is arranged on gland heater top, and be connected with DCS control system, n >=2；Described Electrically operated gate is arranged at gland heater condensed water entry and exit, m >=2.
Further, described differential pressure transmitter is differential pressure of water level transmitter.
Further, described differential pressure transmitter pick-up 4-20mA signal is to DCS control system.
The beneficial effects of the utility model are: realize during gland heater internal hemorrhage due to trauma the most out of service so that protecting equipment safety.The gland heater of generating set is in the case of there is internal hemorrhage due to trauma, and gland heater water level rises at short notice, can realize automatically controlling closedown gateway Electrically operated gate out of service in the short time.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of generator unit shaft of this utility model envelope heater.
Description of reference numerals: 1-gland heater, 2-differential pressure transmitter, 3-Electrically operated gate.
Detailed description of the invention
Below in conjunction with the accompanying drawings this utility model one generator unit shaft envelope heater is described further: this embodiment is merely to illustrate this utility model rather than limits scope of the present utility model, and those skilled in the art all fall within the application claims limited range to the amendment of the various equivalent form of values of the present utility model.
This utility model one generator unit shaft envelope heater, as it is shown in figure 1, include gland heater 1, also includes n platform differential pressure transmitter 2 and m platform Electrically operated gate 3, and described differential pressure transmitter 2 is arranged on the top of gland heater 1, and is connected with DCS control system；Described Electrically operated gate 3 is arranged at gland heater condensed water entry and exit, n >=2, m >=2.
Described differential pressure transmitter is differential pressure of water level transmitter；
Described differential pressure transmitter pick-up 4-20mA signal is to DCS system.
Two differential pressure of water level transmitters 2 are arranged on the top of gland heater 1; differential pressure transmitter 2 sends 4-20mA signal and carries out virtual protection to DCS system; when water level reach >=350mm time; gland heater 1 opens bypass Electrically operated gate 3; closing after time delay and condense water gateway Electrically operated gate 3, gland heater 1 automatically exits from running；
Use Yangzhou Bel's Electrically operated gate to substituted for the most behind the door, when gland heater 1 pass out of service gateway door, condensation water gateway Electrically operated gate 3 can be closed at short notice, while improve efficiency, also improve the safety of gland heater 1.
Claims (3)
1. a generator unit shaft envelope heater, including gland heater (1), it is characterised in that also wrap
Including n platform differential pressure transmitter (2) and m Electrically operated gate (3), described differential pressure transmitter (2) is arranged on axle envelope
The top of heater, and be connected with DCS control system, n >=2；Described Electrically operated gate is arranged on gland heater
At condensed water entry and exit, m >=2.
A kind of generator unit shaft envelope heater the most according to claim 1, it is characterised in that described
Differential pressure transmitter is differential pressure of water level transmitter.
A kind of generator unit shaft envelope heater the most according to claim 2, it is characterised in that institute
The differential pressure transmitter pick-up 4-20mA signal stated is to DCS control system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620459797.6U CN205779047U (en) | 2016-05-19 | 2016-05-19 | A kind of generator unit shaft envelope heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620459797.6U CN205779047U (en) | 2016-05-19 | 2016-05-19 | A kind of generator unit shaft envelope heater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205779047U true CN205779047U (en) | 2016-12-07 |
Family
ID=58116549
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620459797.6U Expired - Fee Related CN205779047U (en) | 2016-05-19 | 2016-05-19 | A kind of generator unit shaft envelope heater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205779047U (en) |
-
2016
- 2016-05-19 CN CN201620459797.6U patent/CN205779047U/en not_active Expired - Fee Related
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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: 20161207 Termination date: 20170519 |