CN113295020A - Online cleaning device for steam turbine condenser and using method thereof - Google Patents

Online cleaning device for steam turbine condenser and using method thereof Download PDF

Info

Publication number
CN113295020A
CN113295020A CN202110662647.0A CN202110662647A CN113295020A CN 113295020 A CN113295020 A CN 113295020A CN 202110662647 A CN202110662647 A CN 202110662647A CN 113295020 A CN113295020 A CN 113295020A
Authority
CN
China
Prior art keywords
condenser
liquid outlet
liquid inlet
pipe
cooling liquid
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.)
Pending
Application number
CN202110662647.0A
Other languages
Chinese (zh)
Inventor
韦冉
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Daye Special Steel Co Ltd
Original Assignee
Daye Special Steel Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Daye Special Steel Co Ltd filed Critical Daye Special Steel Co Ltd
Priority to CN202110662647.0A priority Critical patent/CN113295020A/en
Publication of CN113295020A publication Critical patent/CN113295020A/en
Pending legal-status Critical Current

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28B—STEAM OR VAPOUR CONDENSERS
    • F28B1/00—Condensers in which the steam or vapour is separate from the cooling medium by walls, e.g. surface condenser
    • F28B1/02—Condensers in which the steam or vapour is separate from the cooling medium by walls, e.g. surface condenser using water or other liquid as the cooling medium
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28G—CLEANING OF INTERNAL OR EXTERNAL SURFACES OF HEAT-EXCHANGE OR HEAT-TRANSFER CONDUITS, e.g. WATER TUBES OR BOILERS
    • F28G15/00—Details
    • F28G15/003—Control arrangements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28G—CLEANING OF INTERNAL OR EXTERNAL SURFACES OF HEAT-EXCHANGE OR HEAT-TRANSFER CONDUITS, e.g. WATER TUBES OR BOILERS
    • F28G9/00—Cleaning by flushing or washing, e.g. with chemical solvents

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Cleaning By Liquid Or Steam (AREA)

Abstract

The invention belongs to the technical field of on-line cleaning of condensers, and relates to an on-line cleaning device for a steam turbine condenser and a using method thereof. The steam turbine is connected with a plurality of condensers, each condenser is provided with a cooling liquid inlet and a cooling liquid outlet, and each cooling liquid inlet is connected to a cooling liquid inlet pipe through a cooling liquid inlet branch; the cleaning device comprises a water tank provided with cleaning liquid medicine; a liquid outlet of the water tank is connected with a main liquid inlet pipe, a dosing pump is arranged on the main liquid inlet pipe, the output end of the main liquid inlet pipe is connected with a plurality of liquid inlet branch pipes, each liquid inlet branch pipe is connected with a cooling liquid inlet branch pipe, and valves are arranged on the liquid inlet branch pipes; a liquid return port of the water tank is connected with a main liquid outlet pipe, the input end of the main liquid outlet pipe is connected with a plurality of liquid outlet branch pipes, each liquid outlet branch pipe is connected with a cooling liquid outlet branch pipe, and valves are arranged on the liquid outlet branch pipes. The cleaning device can be used for cleaning one condenser independently, and other condensers can work normally without influencing the operation of a steam turbine system.

Description

Online cleaning device for steam turbine condenser and using method thereof
Technical Field
The invention belongs to the technical field of on-line cleaning of condensers, and particularly relates to an on-line cleaning device for a steam turbine condenser and a using method thereof.
Background
In the normal production process of a power plant, strict standards are set for temperature control of various working media, and in order to meet the requirements of the production process, heat exchange devices are required to be added in various systems, and an oil cooler and a steam turbine condenser of an oil system achieve the purpose of controlling the temperature of various media through reverse and forward flow exchange of cold and hot media.
Because the cooling water of the condenser comes from the circulating water, the influence of the water quality is serious due to the scaling phenomenon of the pipe wall of the condenser due to long-period operation, the vacuum of a unit is greatly influenced, and the direct consequence is that the power generation load cannot come, the heat loss is increased, and the power generation efficiency is low. The cleaning of the condenser is carried out after the shutdown every time, which seriously influences the generated energy and the coal gas balance of the power plant and has large and wide influence range. And when the inner wall of the circulating cooling tube bundle of the condenser is seriously scaled, the tube bundle can be corroded and damaged, so that circulating water permeates and flows into boiler water, and potential safety hazards exist.
The existing shutdown is used for cleaning the condenser, the required time period is long, the cost is high, the labor intensity is high, and the generated energy is seriously influenced. And the disintegration cleaning process will have the following problems: during the disassembly and cleaning of the condenser, the system is free of standby condenser equipment, once the operating equipment has problems, the standby condenser cannot be switched into the system to operate in time, and hidden danger is brought to the stable operation of the unit; the condenser of current power plant adopts plate-type condenser more, and plate-type condenser is more strict to the installation technology requirement at the dismouting in-process, appears leaking the problem in between the heat transfer medium easily after the repacking, and on the other hand disintegrates and washs the condenser, can lead to the gasket between the condenser to damage, increases the cost of overhaul.
Therefore, there is a need to provide an improved solution to the above-mentioned deficiencies of the prior art.
Disclosure of Invention
The invention aims to provide an online cleaning device for a steam turbine condenser and a using method thereof, which at least solve the problems of long required time period, high cost, high labor intensity and the like when the existing device is shut down to clean the condenser.
In order to achieve the above purpose, the invention provides the following technical scheme:
an online cleaning device for a steam turbine condenser is characterized in that a plurality of condensers are connected to a steam turbine, each condenser is provided with a cooling liquid inlet and a cooling liquid outlet, each cooling liquid inlet is connected to a cooling liquid inlet pipe through a cooling liquid inlet branch, and each cooling liquid outlet is connected to a cooling liquid outlet pipe through a cooling liquid outlet branch;
the cleaning device comprises a water tank provided with cleaning liquid medicine;
a liquid outlet of the water tank is connected with a main liquid inlet pipe, and a dosing pump is arranged on the main liquid inlet pipe and used for pumping cleaning liquid medicine; the output end of the main liquid inlet pipe is connected with a plurality of liquid inlet branch pipes, each liquid inlet branch pipe is connected with a cooling liquid inlet branch pipe, and valves for controlling the on-off of pipelines are arranged on the liquid inlet branch pipes;
the liquid return port of the water tank is connected with a main liquid outlet pipe, the input end of the main liquid outlet pipe is connected with a plurality of liquid outlet branch pipes, each liquid outlet branch pipe is connected with a cooling liquid outlet branch pipe, and valves for controlling the on-off of the pipelines are arranged on the liquid outlet branch pipes.
According to the online condenser cleaning device, preferably, a water inlet valve for controlling the on-off of a pipeline is arranged on the main liquid inlet pipe; and a water return valve for controlling the on-off of the pipeline is arranged on the main liquid outlet pipe.
According to the online condenser cleaning device, preferably, two condensers are provided;
the liquid inlet branch pipes are provided with two, and the liquid outlet branch pipes are provided with two.
The online cleaning device for the condenser preferably comprises an on-off valve arranged on the cooling liquid inlet branch, and a connection point of the liquid inlet branch and the cooling liquid inlet branch is located between the on-off valve and the cooling liquid inlet.
In the above online cleaning device for the condenser, preferably, the cooling liquid outlet branch is provided with an on-off valve, and a connection point of the liquid outlet branch and the cooling liquid outlet branch is located between the on-off valve and the cooling liquid outlet.
In the above on-line condenser cleaning device, the PH of the cleaning solution is preferably in a range of 1.8 to 2.2.
The online condenser cleaning device preferably has a connection point between the main liquid inlet pipe and the liquid inlet branch pipe located in the middle of the two cooling liquid inlet branch pipes, and the two liquid inlet branch pipes have the same length.
In the above online cleaning device for the condenser, preferably, a connection point of the main liquid outlet pipe and the liquid outlet branch pipe is located between the two cooling liquid outlet branch pipes, and the two liquid outlet branch pipes have the same length.
The invention also provides a using method of the online cleaning device for the steam turbine condenser, wherein the cleaning device is the online cleaning device for the steam turbine condenser, and the using method comprises the following steps:
s1, only one condenser is cleaned each time, and the rest condensers work normally; a cooling liquid inlet branch connected with the condenser to be cleaned and a valve on a cooling liquid outlet branch are closed, and a liquid inlet branch pipe and a valve on a liquid outlet branch pipe communicated with the condenser to be cleaned are opened; the water inlet valve and the water return valve are opened;
a cooling liquid inlet branch connected with the normally working condenser and a on-off valve on a cooling liquid outlet branch are opened, and a liquid inlet branch pipe and a valve on a liquid outlet branch pipe communicated with the normally working condenser are closed;
s2, turning on a chemical feeding pump, enabling cleaning chemical to enter the condenser to be cleaned through a main liquid inlet pipe and a liquid inlet branch pipe, and then returning to a water tank through a liquid outlet branch pipe and a main liquid outlet pipe;
s3, supplementing cleaning liquid medicine into the water tank, keeping the pH value range of the cleaning liquid medicine between 1.8 and 2.2, sampling and analyzing the circulating cleaning liquid medicine, and finishing the medicine washing process when the hardness and turbidity value of the cleaning liquid medicine are not changed any more;
s4, opening on-off valves on a cooling liquid inlet branch and a cooling liquid outlet branch which are connected with the condenser to be cleaned, closing valves on a liquid inlet branch and a liquid outlet branch which are communicated with the condenser to be cleaned, closing the water inlet valve and the water return valve, and enabling the cleaned condenser to start to work normally;
and (5) circulating the steps S1-S4, and cleaning the rest condensers independently until all condensers are cleaned.
In the method for using the on-line cleaning device for the condenser, preferably, in step S3, after 5 to 8 hours of cyclic chemical washing, when the hardness and turbidity value of the cleaning chemical do not change any more, the chemical washing is ended, and the cleaning chemical is neutralized to be neutral by alkali and discharged;
and then adding clear water into the water tank, circularly flushing the condenser until the effluent is free from turbidity, and ending the drug washing process when the pH value of the effluent is neutral.
Has the advantages that:
the invention relates to an online cleaning device for a steam turbine condenser, wherein the output end of a main liquid inlet pipe is connected with a plurality of liquid inlet branch pipes, the input end of a main liquid outlet pipe is connected with a plurality of liquid outlet branch pipes, and a pair of liquid inlet branch pipes and the liquid outlet branch pipes are connected with a condenser; in addition, the communication and isolation between the condenser and a steam turbine system are controlled by controlling the opening and closing of an on-off valve on a cooling liquid inlet branch and a cooling liquid outlet branch which are connected with the same condenser; thereby realize that belt cleaning device washs a condenser alone, and other condensers can normally work, do not influence steam turbine system's operation, finally realize the online washing of condenser.
Drawings
Fig. 1 is a schematic structural diagram of an online condenser cleaning device (a steam turbine system is connected with two condensers) in an embodiment of the invention.
In the figure: 1. a water tank; 2. a dosing pump; 3. a main liquid inlet pipe; 4. a main liquid outlet pipe; 5. a water inlet valve; 6. a valve; 7. a liquid inlet branch pipe; 8. a cooling liquid inlet branch; 9. an on-off valve; 10. a condenser; 11. a cooling liquid outlet branch; 12. a water return valve; 13. a liquid outlet branch pipe; 14. a coolant outlet pipe; 15. and a cooling liquid inlet pipe.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments that can be derived by one of ordinary skill in the art from the embodiments given herein are intended to be within the scope of the present invention.
In the description of the present invention, the terms "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are for convenience of description of the present invention only and do not require that the present invention must be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. The terms "connected" and "connected" used herein should be interpreted broadly, and may include, for example, a fixed connection or a detachable connection; they may be directly connected or indirectly connected through intermediate members, and specific meanings of the above terms will be understood by those skilled in the art as appropriate.
The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings. It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
According to the embodiment of the invention, as shown in fig. 1, the invention provides an online cleaning device for a steam turbine condenser, wherein a plurality of condensers 10 are connected in a steam turbine system, each condenser 10 is provided with a cooling liquid inlet and a cooling liquid outlet, each cooling liquid inlet is connected to a cooling liquid inlet pipe 15 through a cooling liquid inlet branch 8, and each cooling liquid outlet is connected to a cooling liquid outlet pipe 14 through a cooling liquid outlet branch 11; the cleaning device comprises a water tank 1 provided with cleaning liquid medicine; a liquid outlet of the water tank 1 is connected with a main liquid inlet pipe 3, a dosing pump 2 is arranged on the main liquid inlet pipe 3, and the dosing pump 2 is used for pumping cleaning liquid medicine; the output end of the main liquid inlet pipe 3 is connected with a plurality of liquid inlet branch pipes 7, each liquid inlet branch pipe 7 is connected with a cooling liquid inlet branch pipe 8, and a valve 6 for controlling the on-off of a pipeline is arranged on each liquid inlet branch pipe 7; a liquid return port of the water tank 1 is connected with a main liquid outlet pipe 4, the input end of the main liquid outlet pipe 4 is connected with a plurality of liquid outlet branch pipes 13, each liquid outlet branch pipe 13 is connected with a cooling liquid outlet branch 11, and a valve 6 for controlling the on-off of a pipeline is arranged on each liquid outlet branch pipe 13.
A water inlet valve 5 for controlling the on-off of the pipeline is arranged on the main liquid inlet pipe 3; a water return valve 12 for controlling the on-off of the pipeline is arranged on the main liquid outlet pipe 4. When the cleaning device needs to be used, the water inlet valve 5 and the water return valve 12 are opened, when the cleaning device does not need to be used, the water inlet valve 5 and the water return valve 12 are closed, the water tank 1 and the dosing pump 2 are isolated from the condenser 10, when the condenser 10 needs to be cleaned again, the water inlet valve 5 and the water return valve 12 are opened, and the water tank 1 and the dosing pump 2 are connected with the condenser 10 needing to be cleaned.
In the present embodiment, two condensers 10 are provided; two liquid inlet branch pipes 7 are arranged, and two liquid outlet branch pipes 13 are arranged. In other embodiments, there may be a plurality of condensers 10 (e.g., 3, 4, 5, etc.), and the plurality of condensers 10 are arranged in parallel, in which case, the number of inlet branch pipes 7 and outlet branch pipes 13 is the same as that of condensers 10.
An on-off valve 9 is arranged on the cooling liquid inlet branch 8, and the connection point of the liquid inlet branch pipe 7 and the cooling liquid inlet branch 8 is positioned between the on-off valve 9 and the cooling liquid inlet. The cooling liquid outlet branch 11 is provided with an on-off valve 9, and the connection point of the liquid outlet branch 13 and the cooling liquid outlet branch 11 is positioned between the on-off valve 9 and the cooling liquid outlet. On cooling feed liquor branch road 8 and the cooling play liquid branch road 11 that link to each other through control and same condenser 10, opening and closing of on-off valve 9, control this condenser 10 and steam turbine system's intercommunication and isolation, and then be convenient for isolate single condenser 10 from steam turbine system, wash, when single condenser 10 washs, other condensers 10 can normally work, do not influence steam turbine system's operation.
The pH value of the cleaning solution is in the range of 1.8-2.2 (optionally, the pH value is 1.8, 1.9, 2.0, 2.1, 2.2, etc.). The PH value of the cleaning liquid medicine is kept acidic, so that the cleaning liquid medicine is guaranteed to have a good cleaning effect all the time, and the cleaning device is guaranteed to have high cleaning efficiency.
The connecting point of the main liquid inlet pipe 3 and the liquid inlet branch pipes 7 is positioned in the middle of the two cooling liquid inlet branch pipes 8, and the two liquid inlet branch pipes 7 are the same in length. The connecting point of the main liquid outlet pipe 4 and the liquid outlet branch pipes 13 is positioned between the two cooling liquid outlet branches 11, and the lengths of the two liquid outlet branch pipes 13 are the same. Every feed liquor branch pipe 7's length is the same, and every goes out liquid branch pipe 13's length the same to guarantee that the washing circuit of being connected between every condenser 10 and the belt cleaning device is all the same, and then can guarantee that each condenser 10 all has higher cleaning performance, and has the same cleaning time, thereby guarantee that each condenser 10 all has better cleaning efficiency.
The invention also provides a using method of the online cleaning device for the steam turbine condenser, the cleaning device is the online cleaning device for the steam turbine condenser 10, and the using method comprises the following steps:
s1, only one condenser 10 is cleaned each time, and the rest condensers 10 work normally; a cooling liquid inlet branch 8 connected with a condenser 10 to be cleaned and an on-off valve 9 on a cooling liquid outlet branch 11 are closed, and a liquid inlet branch pipe 7 and a valve 6 on a liquid outlet branch pipe 13 which are communicated with the condenser 10 to be cleaned are opened; the water inlet valve 5 and the water return valve 12 are opened; and a cooling liquid inlet branch 8 connected with a normal-working condenser 10 and an on-off valve 9 on a cooling liquid outlet branch 11 are opened, and a liquid inlet branch pipe 7 communicated with the normal-working condenser 10 and a valve 6 on a liquid outlet branch pipe 13 are closed.
S2, the chemical feeding pump 2 is turned on, cleaning chemical enters the condenser 10 to be cleaned through the main liquid inlet pipe 3 and the liquid inlet branch pipe 7, and then returns to the water tank 1 through the liquid outlet branch pipe 13 and the main liquid outlet pipe 4.
S3, supplementing cleaning liquid medicine into the water tank 1, keeping the pH value range of the cleaning liquid medicine between 1.8-2.2, performing cyclic medicine washing for 5-8 hours, sampling and analyzing the cyclic cleaning liquid medicine, and finishing the medicine washing process when the hardness and turbidity value of the cleaning liquid medicine are not changed any more; neutralizing the cleaning liquid medicine by alkali to be neutral and discharging. Then adding clear water into the water tank 1, circularly flushing the condenser 10 until the effluent is free from turbidity, and ending the drug washing process when the pH value of the effluent is neutral.
The scale in the condenser 10 is removed through the drug washing process, and then the residual cleaning liquid medicine in the condenser 10 is removed through water washing, so that the pipe wall of the condenser 10 is prevented from being corroded by the cleaning liquid medicine.
S4, opening a on-off valve 9 on a cooling liquid inlet branch 8 and a cooling liquid outlet branch 11 which are connected with the condenser 10 to be cleaned, closing a valve 6 on a liquid inlet branch pipe 7 and a liquid outlet branch pipe 13 which are communicated with the condenser 10 to be cleaned, closing a water inlet valve 5 and a water return valve 12, and enabling the condenser 10 which is cleaned to start to work normally.
And (5) circulating the steps S1-S4, and cleaning the rest condensers independently until all condensers are cleaned.
In summary, according to the technical scheme of the online cleaning device for the steam turbine condenser and the using method thereof provided by the invention, the plurality of condensers are arranged in the steam turbine system in parallel, and the online cleaning device isolates a single condenser from the steam turbine system, so that the cleaning of the single condenser is realized under the condition that the normal operation of the steam turbine system is not influenced.
A plurality of liquid inlet branch pipes are arranged on the main liquid inlet pipe, a plurality of liquid outlet branch pipes are arranged on the main liquid outlet pipe, and a pair of liquid inlet branch pipes and a pair of liquid outlet branch pipes are connected with a condenser; in addition, the communication and isolation between the condenser and a steam turbine system are controlled by controlling the opening and closing of an on-off valve on a cooling liquid inlet branch and a cooling liquid outlet branch which are connected with the same condenser; thereby realize that belt cleaning device washs a condenser alone, and other condensers can normally work, do not influence steam turbine system's operation, finally realize the online washing of condenser. And the cleaning circuit of being connected between every condenser and the belt cleaning device is the same for each condenser all has higher cleaning performance, and has the same cleaning time, thereby guarantees that each condenser all has better cleaning efficiency.
The above description is only exemplary of the invention and should not be taken as limiting the invention, as any modification, equivalent replacement, or improvement made within the spirit and principle of the invention is intended to be covered by the appended claims.

Claims (10)

1. An on-line cleaning device for a steam turbine condenser is characterized in that,
the steam turbine is connected with a plurality of condensers, each condenser is provided with a cooling liquid inlet and a cooling liquid outlet, each cooling liquid inlet is connected to a cooling liquid inlet pipe through a cooling liquid inlet branch, and each cooling liquid outlet is connected to a cooling liquid outlet pipe through a cooling liquid outlet branch;
the cleaning device comprises a water tank provided with cleaning liquid medicine;
a liquid outlet of the water tank is connected with a main liquid inlet pipe, and a dosing pump is arranged on the main liquid inlet pipe and used for pumping cleaning liquid medicine; the output end of the main liquid inlet pipe is connected with a plurality of liquid inlet branch pipes, each liquid inlet branch pipe is connected with a cooling liquid inlet branch pipe, and valves for controlling the on-off of pipelines are arranged on the liquid inlet branch pipes;
the liquid return port of the water tank is connected with a main liquid outlet pipe, the input end of the main liquid outlet pipe is connected with a plurality of liquid outlet branch pipes, each liquid outlet branch pipe is connected with a cooling liquid outlet branch pipe, and valves for controlling the on-off of the pipelines are arranged on the liquid outlet branch pipes.
2. The online cleaning device for the condenser according to claim 1, wherein a water inlet valve for controlling the on-off of a pipeline is arranged on the main liquid inlet pipe; and a water return valve for controlling the on-off of the pipeline is arranged on the main liquid outlet pipe.
3. The online cleaning device for the condenser according to claim 2, wherein two condensers are arranged;
the liquid inlet branch pipes are provided with two, and the liquid outlet branch pipes are provided with two.
4. The on-line cleaning device for the condenser according to claim 3, wherein the cooling liquid inlet branch is provided with an on-off valve, and a connection point of the liquid inlet branch and the cooling liquid inlet branch is located between the on-off valve and the cooling liquid inlet.
5. The online cleaning device for the condenser according to claim 3, wherein an on-off valve is arranged on the cooling liquid outlet branch, and a connection point of the liquid outlet branch and the cooling liquid outlet branch is located between the on-off valve and the cooling liquid outlet.
6. The on-line cleaning device for the condenser according to claim 1, wherein the pH value of the cleaning liquid is in a range of 1.8-2.2.
7. The online condenser cleaning device according to claim 3, wherein a connection point of the main liquid inlet pipe and the liquid inlet branch pipe is located between the two cooling liquid inlet branch pipes, and the two liquid inlet branch pipes are the same in length.
8. The online cleaning device for the condenser according to claim 3, wherein a connection point of the main liquid outlet pipe and the liquid outlet branch pipe is located between the two cooling liquid outlet branch pipes, and the two liquid outlet branch pipes are the same in length.
9. A using method of an online cleaning device for a steam turbine condenser is characterized in that the cleaning device is the online cleaning device for the steam condenser according to any one of claims 1 to 8, and the using method comprises the following steps:
s1, only one condenser is cleaned each time, and the rest condensers work normally; a cooling liquid inlet branch connected with the condenser to be cleaned and a valve on a cooling liquid outlet branch are closed, and a liquid inlet branch pipe and a valve on a liquid outlet branch pipe communicated with the condenser to be cleaned are opened; the water inlet valve and the water return valve are opened;
a cooling liquid inlet branch connected with the normally working condenser and a on-off valve on a cooling liquid outlet branch are opened, and a liquid inlet branch pipe and a valve on a liquid outlet branch pipe communicated with the normally working condenser are closed;
s2, turning on a chemical feeding pump, enabling cleaning chemical to enter the condenser to be cleaned through a main liquid inlet pipe and a liquid inlet branch pipe, and then returning to a water tank through a liquid outlet branch pipe and a main liquid outlet pipe;
s3, supplementing cleaning liquid medicine into the water tank, keeping the pH value range of the cleaning liquid medicine between 1.8 and 2.2, sampling and analyzing the circulating cleaning liquid medicine, and finishing the medicine washing process when the hardness and turbidity value of the cleaning liquid medicine are not changed any more;
s4, opening on-off valves on a cooling liquid inlet branch and a cooling liquid outlet branch which are connected with the condenser to be cleaned, closing valves on a liquid inlet branch and a liquid outlet branch which are communicated with the condenser to be cleaned, closing the water inlet valve and the water return valve, and enabling the cleaned condenser to start to work normally;
and (5) circulating the steps S1-S4, and cleaning the rest condensers independently until all condensers are cleaned.
10. The use method of the on-line cleaning device for the condenser according to claim 9, wherein in step S3, after 5-8 hours of cyclic drug washing, when the hardness and turbidity value of the cleaning drug solution are not changed any more, the drug washing is finished, and the cleaning drug solution is neutralized to be neutral by alkali and is discharged;
and then adding clear water into the water tank, circularly flushing the condenser until the effluent is free from turbidity, and ending the drug washing process when the pH value of the effluent is neutral.
CN202110662647.0A 2021-06-15 2021-06-15 Online cleaning device for steam turbine condenser and using method thereof Pending CN113295020A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202110662647.0A CN113295020A (en) 2021-06-15 2021-06-15 Online cleaning device for steam turbine condenser and using method thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202110662647.0A CN113295020A (en) 2021-06-15 2021-06-15 Online cleaning device for steam turbine condenser and using method thereof

Publications (1)

Publication Number Publication Date
CN113295020A true CN113295020A (en) 2021-08-24

Family

ID=77328337

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202110662647.0A Pending CN113295020A (en) 2021-06-15 2021-06-15 Online cleaning device for steam turbine condenser and using method thereof

Country Status (1)

Country Link
CN (1) CN113295020A (en)

Similar Documents

Publication Publication Date Title
CN102425778B (en) Process of carrying out low-temperature chemical cleaning passivation on thermal power plant boiler by utilizing EDTA (Ethylene Diamine Tetraacetic Acid)
CN114850148A (en) Online cleaning work system
CN216977575U (en) Online cleaning device for steam turbine condenser
CN113295020A (en) Online cleaning device for steam turbine condenser and using method thereof
CN210448129U (en) Online descaling methanol-water separation system in low-temperature methanol washing process
CN103851953B (en) Pipe heat exchanger independence low discharge cyclic chemical descaling method
CN109269344B (en) Online chemical cleaning liquid preparation system
CN111033121A (en) Double-loop nuclear reactor steam generating device with purging and draining system
CN201569201U (en) Circulating cooling water waste heat recovery device
CN210004374U (en) Thermal power plant deoxidization system
CN201964833U (en) On-line forced back flushing device for cooler
CN203820495U (en) Energy-saving deoxidation system of industrial boiler
CN216928051U (en) Spent fuel pool cooling and heating system
CN206817820U (en) A kind of twin-stage direct-heating-type sewage source heat pump unit
CN209877246U (en) Cooling system for purification workshop
CN221237853U (en) High-temperature gas cooled reactor secondary loop flushing system
CN218994131U (en) Intermittent polyester device process tower cooling water system
CN214638899U (en) Bottle washing and sterilization heat exchange integrated system
CN216667796U (en) Heat supply system
CN111197785B (en) Energy-saving heating device and using method
CN219169132U (en) Female tube replacement journey cleaning system in allied oneself with alkali production
CN221684528U (en) Boiler constant-drainage recycling system
CN220329501U (en) Circulating water oil cooler capable of being cleaned on line for thermal power plant
CN218993362U (en) Continuous waste water high-quality recovery system based on superheated steam purifier
CN216482378U (en) Circulating water system for thermal power plant

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination