CN217275669U - Online short-period condenser hot air maintenance system - Google Patents
Online short-period condenser hot air maintenance system Download PDFInfo
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- CN217275669U CN217275669U CN202220871753.XU CN202220871753U CN217275669U CN 217275669 U CN217275669 U CN 217275669U CN 202220871753 U CN202220871753 U CN 202220871753U CN 217275669 U CN217275669 U CN 217275669U
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Abstract
The utility model relates to a hot-blast maintenance system of online short period condenser. At present, after a unit is stopped, a hot water well of a condenser is automatically inspected, and accumulated water, sundries and rust sediments at the bottom of the condenser are found in the inspection for a long time. The utility model provides a hot-blast maintenance system of online short period condenser, includes hot-blast fan (8), hot-blast maintenance vacuum isolation valve (7) and hot-blast maintenance system pipeline (6), and hot-blast fan passes through hot-blast maintenance vacuum isolation valve and hot-blast maintenance system pipeline (6) and is connected with six sections steam extraction pipelines (2), and the hookup location is before six sections steam extraction electric butterfly valves (3), six sections steam extraction electric butterfly valves (3) are in the closed condition during the unit is stopped to be equipped with. And during the unit standby period, starting a hot air fan, starting a hot air maintenance vacuum isolation valve, providing hot air to the low-pressure cylinder and the steam side (1) of the condenser through a six-section steam extraction pipeline, and drying the low-pressure cylinder parts and the steam side of the condenser. The utility model discloses be applied to the thermal power field.
Description
Technical Field
The utility model relates to a hot-blast maintenance system of online short period condenser.
Background
The method is characterized in that the method is used for solving the problems that the thermal power generating units in the areas such as Chongqing and the like with high humidity all year round are influenced by the characteristics of small power grid capacity, more water and electricity, wave crest and wave trough difference and the like, and the number of times of long-time standby is more.
After the unit is stopped, the hot water well of the condenser is automatically checked, and accumulated water, sundries and rust sediments at the bottom of the condenser are found out in the checking process for a long time. Meanwhile, a large amount of desalted water is needed to wash rust and sediments of the condenser system in the starting process of the unit until the quality of condensed water is qualified, so that the desalted water consumption in the starting process is high.
Disclosure of Invention
The utility model aims at providing a hot-blast maintenance system of online short period condenser solves and causes condenser and low cylinder part corrosion quick problem among the prior art by the environment humidity and unit outage duration for a long time.
The above purpose is realized by the following technical scheme:
the utility model provides an online short-period condenser hot-blast maintenance system which constitutes and includes: the hot air fan is connected with the six-section steam extraction pipeline through the hot air maintenance system vacuum isolation valve and the hot air maintenance system pipeline, the connection position is in front of the six-section steam extraction electric butterfly valve, and the six-section steam extraction electric butterfly valve is in a closed state during the unit standby period;
the six-section steam extraction pipeline is connected with a drain pipeline, the drain pipeline is respectively connected with a front drain manual door of the six-section steam extraction electric door and a front drain pneumatic door of the six-section steam extraction electric door, and the hot air maintenance system of the condenser is used for a unit standby period.
Preferably, the hot air maintenance system is provided with a hot air maintenance branch pipe, a vacuum stop valve and a hot air fan.
Preferably, the condition of putting the hot air maintenance system into service is provided with the steam side bottom flushing and sundries cleaning of a condenser.
Preferably, the hot air maintenance system is provided with a device for periodically measuring the humidity at each air outlet (a steam side manhole door of the condenser and a low-pressure cylinder shaft seal) after being put into service.
Preferably, the hot air fan can adjust the temperature and the air quantity of the hot air outlet.
Preferably, the hot air maintenance system is provided with a vacuum stop valve for isolating the steam extraction pipeline during the operation of the unit.
The utility model has the advantages that:
1. the utility model provides a pair of online short period condenser hot-blast maintenance system, during the unit was equipped to, it is 120 ℃, hot-blast of wind pressure 0.1MPa to provide the temperature in to low pressure jar, the condenser from six sections steam extraction pipelines, carry out the drying to the condenser, the investment is little, reform transform for a short time, equipment operation is simple, the characteristics that the reliability is high, and can effectively reduce the corrosion speed of equipment such as low pressure jar, condensers, delay the degradation, the equipment life is prolonged, reduce demineralized water and consume, shorten the unit start-up time, practice thrift the station service electricity, create good economic benefits.
Description of the drawings:
fig. 1 is a hot air system diagram of the gland in the embodiment of the present invention.
In the figure: the device comprises a low-pressure cylinder and condenser steam side (1), a six-section steam extraction pipeline (2), a six-section steam extraction electric butterfly valve (3), a six-section steam extraction electric door front drainage manual door (4), a six-section steam extraction electric door front drainage pneumatic door (5), a hot air maintenance system pipeline (6), a hot air maintenance system vacuum isolation valve (7) and a hot air fan (8).
The specific implementation mode is as follows:
example 1:
the utility model provides a hot-blast maintenance system of online short period condenser which characterized in that: including hot air blower 8, hot-blast maintenance system vacuum isolation valve 7 and hot-blast maintenance system pipeline 6, hot air blower 8 is connected with six sections steam extraction pipelines 2 through hot-blast maintenance system vacuum isolation valve 7 and hot-blast maintenance system pipeline 6, hookup location is before six sections steam extraction electric butterfly valve 3, six sections steam extraction electric butterfly valve 3 are in the closed condition during the unit is stopped to be equipped with. The standby maintenance scheme comprises condenser steam side cleaning; the steam side cleaning device of the condenser is characterized in that when the temperature of the high-medium pressure outer cylinder is reduced to below 120 ℃, the bottom of the steam side of the condenser is washed, and impurities such as accumulated water, rust sediments and the like are cleaned. The standby maintenance scheme comprises hot air maintenance; when the temperature of the high-medium pressure outer cylinder is reduced to be lower than 80 ℃, the hot air fan 8 is started, the vacuum isolation valve 7 of the hot air maintenance system is started to provide hot air with the temperature of 120 ℃ and the pressure of 0.1MPa to the steam side 1 of the low-pressure cylinder and the condenser through the six-section steam extraction pipeline 2, the low-pressure cylinder parts and the steam side of the condenser are dried, and the corrosion rate of the parts in a drying area is effectively reduced. The hot air maintenance is provided with a main air outlet (a steam side manhole door of a condenser and a low-pressure cylinder shaft seal) for weekly checking of humidity; the hot air maintenance device can adjust the temperature and the air quantity of a hot air outlet, so that the relative humidity in the condenser is lower than 60%.
Example 2:
in this embodiment, as shown in fig. 1, an online short-period hot air maintenance system for a condenser includes a hot air blower 8, a hot air maintenance system vacuum isolation valve 7 and a hot air maintenance system pipeline 6, the hot air blower 8 is connected with a six-section steam extraction pipeline 2 through the hot air maintenance system vacuum isolation valve 7 and the hot air maintenance system pipeline 6, the connection position is in front of a six-section steam extraction electric butterfly valve 3, and the six-section steam extraction electric butterfly valve 3 is in a closed state during the unit shutdown.
As an optional implementation manner, the hot air maintenance system and the six-section steam extraction pipeline are provided with vacuum isolation valves, so that the event of unit vacuum leakage caused by imprecise hot air maintenance system in the six-section steam extraction under a low-load micro-negative pressure state can be effectively avoided.
As an optional embodiment, the operation conditions of the hot air maintenance system are provided with steam side bottom flushing of a condenser and impurity cleaning.
As an optional embodiment, after the hot air maintenance system is put into use, the humidity at each air outlet (a steam side manhole door of a condenser and a low-pressure cylinder shaft seal) is periodically measured.
As an optional implementation manner, the hot air fan can adjust the temperature and the air volume of the hot air outlet.
The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention.
Claims (2)
1. The utility model provides an online short-period condenser hot-blast maintenance system which constitutes and includes: hot-blast fan, hot-blast maintenance system vacuum isolation valve and hot-blast maintenance system pipeline, characterized by: the hot air fan is connected with the six-section steam extraction pipeline through a hot air maintenance system vacuum isolation valve and a hot air maintenance system pipeline, the connection position is in front of the six-section steam extraction electric butterfly valve, and the six-section steam extraction electric butterfly valve is in a closed state during the unit standby period;
the six sections of steam extraction pipelines are connected with a drainage pipeline, and the drainage pipeline is respectively connected with a front drainage manual door of the six sections of steam extraction electric doors and a front drainage pneumatic door of the six sections of steam extraction electric doors; and the six-section steam extraction pipeline is connected with the low-pressure cylinder and the steam side of the condenser.
2. The on-line short-cycle condenser hot air maintenance system according to claim 1, characterized in that: the six-section steam extraction pipeline provides hot air with the temperature of 120 ℃ and the pressure of 0.1MPa to the steam side of the low-pressure cylinder and the condenser.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220871753.XU CN217275669U (en) | 2022-04-15 | 2022-04-15 | Online short-period condenser hot air maintenance system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220871753.XU CN217275669U (en) | 2022-04-15 | 2022-04-15 | Online short-period condenser hot air maintenance system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217275669U true CN217275669U (en) | 2022-08-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220871753.XU Active CN217275669U (en) | 2022-04-15 | 2022-04-15 | Online short-period condenser hot air maintenance system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217275669U (en) |
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2022
- 2022-04-15 CN CN202220871753.XU patent/CN217275669U/en active Active
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