CN115059910A - Device and method for controlling and optimizing drainage recovery of heat supply network - Google Patents
Device and method for controlling and optimizing drainage recovery of heat supply network Download PDFInfo
- Publication number
- CN115059910A CN115059910A CN202210735699.0A CN202210735699A CN115059910A CN 115059910 A CN115059910 A CN 115059910A CN 202210735699 A CN202210735699 A CN 202210735699A CN 115059910 A CN115059910 A CN 115059910A
- Authority
- CN
- China
- Prior art keywords
- drainage
- heat supply
- supply network
- water quality
- electric valve
- 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
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22D—PREHEATING, OR ACCUMULATING PREHEATED, FEED-WATER FOR STEAM GENERATION; FEED-WATER SUPPLY FOR STEAM GENERATION; CONTROLLING WATER LEVEL FOR STEAM GENERATION; AUXILIARY DEVICES FOR PROMOTING WATER CIRCULATION WITHIN STEAM BOILERS
- F22D1/00—Feed-water heaters, i.e. economisers or like preheaters
- F22D1/50—Feed-water heaters, i.e. economisers or like preheaters incorporating thermal de-aeration of feed-water
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22D—PREHEATING, OR ACCUMULATING PREHEATED, FEED-WATER FOR STEAM GENERATION; FEED-WATER SUPPLY FOR STEAM GENERATION; CONTROLLING WATER LEVEL FOR STEAM GENERATION; AUXILIARY DEVICES FOR PROMOTING WATER CIRCULATION WITHIN STEAM BOILERS
- F22D11/00—Feed-water supply not provided for in other main groups
- F22D11/006—Arrangements of feedwater cleaning with a boiler
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Water Supply & Treatment (AREA)
- Control Of Non-Electrical Variables (AREA)
Abstract
The invention provides a device and a method for controlling and optimizing drainage recovery of a heat supply network, wherein the device for controlling and optimizing drainage recovery of the heat supply network comprises a drainage pipe of the heat supply network, a drainage flash tank, a condenser, a fine processing device, a shaft seal heater, a low-pressure heater, a deaerator, a water feed pump, a high-pressure heater and an economizer, and electric valves controlled by an automatic drainage recovery control system are arranged on all pipelines. The heat supply network drainage recovery control optimization device has the advantages that the system can automatically adjust the drainage recovery amount of each of the condenser and the deaerator, the influence of unqualified drainage water on the water quality of feed water is reduced by matching the condenser and the deaerator, and the phenomena of corrosion and scaling of an evaporation section of a boiler, salt accumulation of blades of a steam turbine and the like caused by unqualified drainage of the heat supply network are effectively avoided. The heat supply network drainage recovery control optimization method provided by the invention has the advantages of safe and stable structural design and high automation degree, and effectively solves the problem that the water supply quality of a unit is influenced by the drainage recovery of the heat supply network at present.
Description
Technical Field
The invention relates to the technical field of water recovery, in particular to a device and a method for controlling and optimizing drainage recovery of a heat supply network.
Background
With the development of northern cities in China, the heat supply demand in winter is gradually increased. When the steam extraction flow of the heating unit is increased, the corresponding water drainage quantity is gradually increased. For a subcritical heat supply unit, drainage of a heat supply network heater can directly enter a deaerator to recover corresponding heat, but the problems of unqualified indexes such as water supply dissolved oxygen, hydrogen conductivity and the like can occur due to overlarge recovery amount.
For a supercritical heat supply unit, because a heat supply network heater is seasonally put in, a non-random unit continuously operates, the quality of the drained water at the initial stage of putting in is poor, and the quality of the drained water of the heat supply network heater has great influence on the quality of the supplied water of a boiler. Therefore, the reasonable recycling of the drainage water resource and the heat of the heat supply network heater is considered, and meanwhile, the qualified water quality of the water supply is ensured.
Although the prior art can carry out effective control to the hydrophobic quality of water of heat supply network, can't judge automatically whether drainage is all discharged, whether all retrieve to the condenser and handle, whether all retrieve to the oxygen-eliminating device and handle, whether carry out partly retrieve that the condenser is partly retrieved to the oxygen-eliminating device and handle. Therefore, in view of the above drawbacks, an apparatus and a method for controlling and optimizing the recovery of the drained water of the heat supply network are provided.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: at present, a drainage recovery system cannot be automatically controlled, and cannot automatically judge whether drainage is completely discharged or not, whether drainage is completely recovered to a condenser for treatment or not, whether drainage is completely recovered to a deaerator for treatment or not, and whether a part of drainage recovery condenser is executed or not, and a part of drainage recovery condenser is recovered to the deaerator for treatment or not.
The technical scheme adopted by the invention for solving the technical problems is as follows:
the device comprises a heat supply network drain pipe, a drain flash tank, a condenser, a fine processing device, a shaft seal heater, a low-pressure heater, a deaerator, a water feed pump, a high-pressure heater and an economizer;
the heat supply network drain pipe is connected with the drain flash tank through a drain discharge pipe, and a third electric valve is installed on the drain discharge pipe; the heat supply network drain pipe behind the connection part of the heat supply network drain pipe and the drain discharge pipe is connected with the condenser through a condenser drain pipe, an electric valve IV is arranged on the condenser drain pipe, and the condenser, the fine treatment device, the shaft seal heater, the low-pressure heater and the deaerator are sequentially connected through pipelines;
the heat supply network drain pipe behind the joint of the heat supply network drain pipe and the condenser drain pipe is connected with the deaerator, a first electric valve is installed on one section of the heat supply network drain pipe in front of the deaerator, the upper part of the deaerator is connected with an air extraction pipeline, a second electric valve is installed on the air extraction pipeline, the deaerator is connected with the water feed pump through a water feed pipe, and the water feed pump, the high-pressure heater and the economizer are sequentially connected through pipelines;
the water quality monitoring device comprises a heat supply network drainage pipe, a water economizer, a water quality monitoring instrument I, an electric valve II, an electric valve III and an electric valve IV, wherein the water supply network drainage pipe is arranged on the front section of the connection part of the heat supply network drainage pipe, the high-pressure heater and a pipeline between the coal economizers are provided with the water quality monitoring instrument II, the water quality monitoring instrument I, the electric valve II, the electric valve III and the electric valve IV are in communication connection with a drainage recovery automatic control system, and the drainage recovery automatic control system can control the water quality monitoring instrument I, the water quality monitoring instrument II, the electric valve I, the electric valve II, the electric valve III and the opening and closing degree of the electric valve IV.
Preferably, the first water quality monitoring instrument is any combination of a hardness analyzer, an all-iron analyzer, a hydrogen conductivity meter, a sodium meter and a silicon meter.
Preferably, the second water quality monitoring instrument is any combination of a hydrogen conductivity meter, a hardness analyzer, an oxygen meter, an all-iron analyzer, a copper analyzer, a sodium meter, a silicon meter, a chloride ion analyzer and a TOCi analyzer.
The utility model provides a device and a method for controlling and optimizing the drainage recovery of a heat supply network, wherein the method for controlling and optimizing the drainage recovery of the heat supply network comprises the following steps:
s1, the drainage water quality of the heat supply network does not meet the recovery of the condenser: the automatic drainage recovery control system controls to close the electric valve I and the electric valve IV, slightly open the electric valve II, open the electric valve III and drain the drainage recovery paper of the heat supply network in the drainage flash tank, and perform sewage disposal when the drainage pressure and temperature of the heat supply network in the drainage flash tank are recovered to normal temperature and normal pressure;
s2, the drainage water quality of the heat supply network meets the requirements of the condenser on the recovery water quality of the deaerator: the water quality monitoring instrument I monitors that at least one index does not meet the water quality requirement of the deaerator for recovering paper, the drainage recovery automatic control system controls to close the electric valve I and the electric valve III, slightly open the electric valve II, open the electric valve IV, recover the drainage of the heat supply network into the condenser, and then treat the drainage by the fine treatment device;
s3, the hydrophobic water quality of the heat supply network meets the requirement of the deaerator for recovery, and the water quality index of the water quality monitoring instrument II is completely qualified: the water quality monitoring instrument I monitors a water sample in the heat supply network drainage pipe, the hardness of the drainage of the heat supply network and the index of all iron are qualified, all the indexes of the water quality monitoring instrument I meet the water quality requirement of the water sample recovered to the deaerator, the drainage recovery automatic control system controls to close the electric valve III and the electric valve IV, slightly open the electric valve II, open the electric valve I, recover the drainage of the heat supply network to the deaerator, then convey the water supply pipe to the water supply pump, the high-pressure heater, the economizer and other thermal equipment, and monitor the water sample in front of the inlet of the economizer by the water quality monitoring instrument II to meet the standard water quality requirement;
s4, the drainage water quality of the heat supply network meets the requirement of the deaerator for recovery, but the water quality index of the water quality monitoring instrument II is not completely qualified: the water supply system is characterized in that a water supply network drainage pipe with certain pressure and flow is arranged in the water supply network drainage pipe, a water quality monitoring instrument monitors a water sample in the water supply network drainage pipe, the water hardness and the total iron index of the water supply network drainage pipe are qualified, all indexes monitored by the water quality monitoring instrument meet the requirement of recovering the water quality of the deaerator, an automatic drainage recovery control system controls and closes an electric valve III and an electric valve IV, a micro-valve is opened an electric valve II, the electric valve I is opened, the water supply network drainage pipe is recovered to the deaerator, and then the water supply pipe reaches a water supply pump, a high-pressure heater and coal economizer and other thermal equipment. At least one index of a water sample before the inlet of the economizer is monitored by the water quality monitoring instrument II and does not meet the standard requirement, at the moment, the drainage recovery automatic control system receives a signal of the water quality monitoring instrument II, and a part of heat supply network drainage is recovered to the condenser by opening the electric valve IV and adjusting the opening degree of the electric valve IV; and simultaneously, when the dissolved oxygen index in the water quality monitoring instrument II is unqualified, the opening degree of the electric valve II is enlarged, and all indexes of the water quality monitoring instrument II meet the standard requirements after the opening degrees of the electric valve IV and the electric valve II are adjusted.
The device has the advantages that partial indexes of the water quality of the drainage of the heat supply network can be monitored on line, and the test data can be recorded into a water quality monitoring instrument system after the test data is regularly tested when partial water vapor indexes have no online instrument, so that the system can automatically judge the problem of the drainage recovery scheme; the drain recovery automatic control system can automatically judge whether drain is completely discharged or not, whether all drain is completely recovered to a condenser for treatment or not, whether all drain is completely recovered to a deaerator for treatment or not, and whether a part of the drain is recovered and a part of the drain is recovered to the deaerator for treatment or not, so that the water quality requirement of feed water is met;
the system can automatically adjust the recovery amount of each drain of the condenser and the deaerator, and the synergistic effect of the condenser and the deaerator greatly reduces the influence of unqualified drain water quality on the water quality of the feed water, thereby effectively avoiding the phenomena of corrosion and scaling of the evaporation section of the boiler, salt accumulation of the blades of the steam turbine and the like caused by unqualified drain of the heat supply network to influence the water quality of the feed water. The heat supply network drainage recovery control optimization method provided by the invention has the advantages of safe and stable structural design and high automation degree, and effectively solves the problem that the water supply quality of a unit is influenced by the drainage recovery of the heat supply network at present.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic diagram of an overall assembly structure provided by an embodiment of the present invention;
FIG. 2 is a flow chart of the optimization of the drainage recovery control of the heat supply network provided by the embodiment of the invention;
in the figure: 1-heat supply network drain pipe, 2-electric valve I, 3-deaerator, 4-water supply pipe, 5-water supply pump, 6-high pressure heater, 7-economizer, 8-air exhaust pipeline, 9-electric valve II, 10-drainage discharge pipe, 11-electric valve III, 12-drainage flash tank, 13-condenser drain pipe, 14-electric valve IV, 15-condenser, 16-fine treatment device, 17-shaft seal heater, 18-low pressure heater, 19-water quality monitoring instrument I, 20-water quality monitoring instrument II and 21-drainage recovery automatic control system.
Detailed Description
The above-described scheme is further illustrated below with reference to specific examples. It is to be understood that these examples are for the purpose of illustrating the invention and are not to be construed as limiting the scope of the invention. The conditions used in the examples may be further adjusted according to the conditions of the particular manufacturer, and the conditions not specified are generally the conditions in routine experiments.
In a specific embodiment, a heat supply network drainage recovery control optimization device is provided, and comprises a heat supply network drainage pipe 1, a drainage flash tank 12, a condenser 15, a fine processing device 16, a shaft seal heater 17, a low-pressure heater 18, a deaerator 3, a water feed pump 5, a high-pressure heater 6 and an economizer 7, wherein the heat supply network drainage pipe 1 is connected with the drainage flash tank 12 through a drainage discharge pipe 10, an electric valve III 11 is installed on the drainage discharge pipe 10, the heat supply network drainage pipe 1 behind the connection part of the heat supply network drainage pipe 1 and the drainage discharge pipe 10 is connected with the condenser 15 through a condenser drainage pipe 13, an electric valve IV 14 is installed on the condenser drainage pipe 13, and the condenser 15, the fine processing device 16, the shaft seal heater 17, the low-pressure heater 18 and the deaerator 3 are sequentially connected through pipelines;
the method comprises the following steps that a heat supply network drain pipe 1 behind the joint of a heat supply network drain pipe 1 and a condenser drain pipe 13 is connected with a deaerator 3, an electric valve I2 is installed on the heat supply network drain pipe 1 in the section in front of the deaerator 3, the upper portion of the deaerator 3 is connected with an air extraction pipeline 8, an electric valve II 9 is installed on the air extraction pipeline 8, the deaerator 3 is connected with a water feed pump 5 through a water feed pipe 4, and the water feed pump 5, a high-pressure heater 6 and an economizer 7 are sequentially connected through pipelines;
a first water quality monitoring instrument 19 is arranged on a heat supply network drain pipe 1 at the front section of the connection part of the heat supply network drain pipe 1 and the drain discharge pipe 10, a second water quality monitoring instrument 20 is arranged on a pipeline between the high-pressure heater 6 and the economizer 7, the first water quality monitoring instrument 19, the second water quality monitoring instrument 20, the first electric valve 2, the second electric valve 9, the third electric valve 11 and the fourth electric valve 14 are all in communication connection with a drain recovery automatic control system 21, and the drain recovery automatic control system 21 can control the opening and closing degrees of the first water quality monitoring instrument 19, the second water quality monitoring instrument 20, the first electric valve 2, the second electric valve 9, the third electric valve 11 and the fourth electric valve 14.
In this case, the first water quality monitoring instrument 19 is one or a combination of several of a hardness analyzer, an all-iron analyzer, a hydrogen conductivity meter, a sodium meter and a silicon meter. The second water quality monitoring instrument 20 is one or a combination of several of a hydrogen conductivity meter, a hardness analyzer, an oxygen meter, an all-iron analyzer, a copper analyzer, a sodium meter, a silicon meter, a chloride ion analyzer and a TOCi analyzer. The first water quality monitoring instrument 19 and the second water quality monitoring instrument 20 are used for monitoring various indexes in drainage of the heat supply network and sending monitoring results to the automatic drainage recovery control system 21, and when the automatic drainage recovery control system 21 receives signals from the first water quality monitoring instrument 19 and the second water quality monitoring instrument 20, the opening and closing degrees of the first water quality monitoring instrument 19, the second water quality monitoring instrument 20, the first electric valve 2, the second electric valve 9, the third electric valve 11 and the fourth electric valve 14 are controlled.
In a specific embodiment, a device and a method for controlling and optimizing the drainage recovery of a heat supply network are provided, wherein the method for controlling and optimizing the drainage recovery of the heat supply network comprises the following steps:
step one, the drainage water quality of a heat supply network does not meet the recovery of a condenser 15: the inside of the heat supply network drain pipe 1 is provided with heat supply network drainage with certain pressure and flow, the water quality monitoring instrument I19 monitors a water sample inside the heat supply network drain pipe 1, the water hardness and the total iron index of the heat supply network drainage are not all qualified, and the water quality requirement of the water sample recovered to the condenser 15 is not met. The automatic drainage recovery control system 21 receives a signal from the first water quality monitoring instrument 19, controls to close the electric valve I2 and the electric valve IV 14, slightly opens the electric valve II 9, opens the electric valve III 11, and discharges sewage when the drainage pressure and temperature of the heat supply network in the drainage flash tank 12 return to normal temperature and normal pressure;
step two, the drainage water quality of the heat supply network meets the requirements of the condenser 15 on recovery water quality and the deaerator 3 on recovery water quality: the inside of the heat supply network drain pipe 1 is provided with heat supply network drainage with certain pressure and flow, the water quality monitoring instrument I19 monitors a water sample inside the heat supply network drain pipe 1, the hardness and the total iron index of the heat supply network drainage are qualified, and the water quality requirement of the recovered paper deaerator 3 is met, but the water quality monitoring instrument I19 monitors that at least one index does not meet the water quality requirement of the recovered paper deaerator. The automatic drainage recovery control system 21 receives a signal from the first water quality monitoring instrument 19, controls to close the electric valve I2 and the electric valve III 11, slightly opens the electric valve II 9, opens the electric valve IV 14, recovers the drainage of the heat supply network into the condenser 15, and then processes the drainage by the fine processing device 16;
step three, the drainage water quality of the heat supply network meets the requirement of recovery of the deaerator 3, and the water quality index of the water quality monitoring instrument two 20 is completely qualified: the heat supply network drainage pipe 1 is internally provided with heat supply network drainage with certain pressure and flow, the water quality monitoring instrument I19 monitors a water sample in the heat supply network drainage pipe 1, the hardness and the total iron index of the heat supply network drainage are qualified, and the water quality monitoring instrument I19 monitors that all indexes completely meet the water quality requirement of being recovered to the deaerator 3. The automatic drainage recovery control system 21 receives a signal of the first water quality monitoring instrument 19, controls to close the electric valve III 11 and the electric valve IV 14, slightly opens the electric valve II 9, opens the electric valve I2, recovers drainage of a heat supply network into the deaerator 3, then leads a water supply pipe 4 to thermal equipment such as a water supply pump 5, a high-pressure heater 6 and an economizer 7, and monitors a water sample in front of an inlet of the economizer 7 by the second water quality monitoring instrument 20 to meet the standard water quality requirement;
step four, the drainage water quality of the heat supply network meets the recovery requirement of the deaerator 3, but the water quality index of the water quality monitoring instrument II 20 is not completely qualified: the water quality monitoring instrument I19 monitors all indexes to completely meet the water quality requirement of being recovered to the deaerator 3, the automatic control system 21 for drainage recovery controls the closing of the electric valve III 11 and the electric valve IV 14, the electric valve II 9 is opened slightly, the electric valve I2 is opened, the drainage of the heat supply network is recovered to the deaerator 3, and then the drainage of the heat supply network passes through the water supply pipe 4 to the water supply pump 5, the high-pressure heater 6, the economizer 7 and other thermal equipment. At least one index of the water sample before the inlet of the coal economizer 7 is monitored by the second water quality monitoring instrument 20 does not meet the standard requirement, at the moment, the automatic drainage recovery control system 21 receives a signal of the second water quality monitoring instrument 20, and a part of heat supply network drainage is recovered to the condenser 15 by opening the electric valve IV 14 and adjusting the opening degree of the electric valve IV; meanwhile, when the dissolved oxygen index in the second water quality monitoring instrument 20 is unqualified, the opening degree of the second electric valve 9 is increased, and all indexes of the second water quality monitoring instrument 20 meet the standard requirements after the opening degrees of the fourth electric valve 14 and the second electric valve 9 are adjusted.
In light of the foregoing description of the preferred embodiment of the present invention, many modifications and variations will be apparent to those skilled in the art without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.
Claims (4)
1. A heat supply network drainage recovery control optimization device is characterized by comprising a heat supply network drainage pipe (1), a drainage flash tank (12), a condenser (15), a fine treatment device (16), a shaft seal heater (17), a low-pressure heater (18), a deaerator (3), a water feed pump (5), a high-pressure heater (6) and an economizer (7);
the heat supply network drain pipe (1) is connected with the drain flash tank (12) through a drain discharge pipe (10), and an electric valve III (11) is installed on the drain discharge pipe (10); the heat supply network drain pipe (1) behind the joint of the heat supply network drain pipe (1) and the drain discharge pipe (10) is connected with the condenser (15) through a condenser drain pipe (13), an electric valve four (14) is installed on the condenser drain pipe (13), and the condenser (15), the fine treatment device (16), the shaft seal heater (17), the low-pressure heater (18) and the deaerator (3) are sequentially connected through pipelines;
the heat supply network drain pipe (1) is connected with the deaerator (3) at the position behind the connection position of the heat supply network drain pipe (1) and the condenser drain pipe (13), an electric valve I (2) is installed on the heat supply network drain pipe (1) at one section in front of the deaerator (3), the upper part of the deaerator (3) is connected with an air extraction pipeline (8), an electric valve II (9) is installed on the air extraction pipeline (8), the deaerator (3) is connected with the water feed pump (5) through a water feed pipe (4), and the water feed pump (5), the high-pressure heater (6) and the economizer (7) are sequentially connected through pipelines;
a first water quality monitoring instrument (19) is arranged on the heat supply network drain pipe (1) at the front section of the joint of the heat supply network drain pipe (1) and the drain discharge pipe (10), a second water quality monitoring instrument (20) is arranged on a pipeline between the high-pressure heater (6) and the economizer (7), the water quality monitoring instrument I (19), the water quality monitoring instrument II (20), the electric valve I (2), the electric valve II (9), the electric valve III (11) and the electric valve IV (14) are all in communication connection with a drainage recovery automatic control system (21), the drainage recovery automatic control system (21) can control the opening and closing degree of the first water quality monitoring instrument (19), the second water quality monitoring instrument (20), the first electric valve (2), the second electric valve (9), the third electric valve (11) and the fourth electric valve (14).
2. The device for controlling and optimizing the drainage recovery of the heat supply network as claimed in claim 1, wherein the first water quality monitoring instrument (19) is any combination of a hardness analysis instrument, an all-iron analysis instrument, a hydrogen conductivity meter, a sodium meter and a silicon meter.
3. The device for controlling and optimizing the drainage recovery of the heat supply network according to claim 1, wherein the second water quality monitoring instrument (20) is any combination of a hydrogen conductivity meter, a hardness analyzer, an oxygen meter, an all-iron analyzer, a copper analyzer, a sodium meter, a silicon meter, a chloride ion analyzer and a TOCi analyzer.
4. A method for controlling and optimizing drainage recovery of a heat supply network using the device for controlling and optimizing drainage recovery of a heat supply network according to any one of claims 1 to 3,
s1, the drainage water quality of the heat supply network does not meet the recovery of the condenser (15): the drainage system is characterized in that a drainage pipe (1) of the heat supply network has drainage with certain pressure and flow, a water quality monitoring instrument I (19) monitors a water sample in the drainage pipe (1) of the heat supply network, the drainage hardness and the total iron index of the heat supply network are not all qualified, an automatic drainage recovery control system (21) controls to close an electric valve I (2) and an electric valve IV (14), slightly open an electric valve II (9), open an electric valve III (11), recover paper from the drainage of the heat supply network in a drainage flash tank (12), and after the drainage pressure and the temperature of the heat supply network in the drainage flash tank (12) are recovered to normal temperature and normal pressure, sewage disposal is carried out;
s2, the drainage water quality of the heat supply network meets the requirements of the condenser (15) on the recovery water quality of the deaerator (3): the water quality monitoring instrument I (19) monitors that at least one index does not meet the water quality requirement of the deaerator (3) for recovering paper, the automatic drainage recovery control system (21) controls to close the electric valve I (2) and the electric valve III (11), slightly open the electric valve II (9), open the electric valve IV (14), recover the drainage of the heat supply network into the condenser (15), and then the drainage is treated by the fine treatment device (16);
s3, the drainage water quality of the heat supply network meets the requirement of recovering the deaerator (3), and the water quality index of the water quality monitoring instrument II (20) is completely qualified: the water quality monitoring instrument I (19) monitors that all indexes completely meet the water quality requirement of recovering to the deaerator (3), the automatic drainage recovery control system (21) controls to close the electric valve III (11) and the electric valve IV (14), slightly opens the electric valve II (9), opens the electric valve I (2), recovers the water in the deaerator (3), then leads the water supply pipe (4) to the water supply pump (5), the high-pressure heater (6) and the economizer (7) and other thermal devices, and monitors the water sample before the inlet of the economizer (7) by the water quality monitoring instrument II (20), the standard water quality requirement is met;
s4, the drainage water quality of the heat supply network meets the requirement of recovery of the deaerator (3), but the water quality index of the water quality monitoring instrument II (20) is not completely qualified: the utility model discloses a water heater, including heat supply network drain pipe, water quality monitoring instrument (19), drainage recovery automatic control system (21) control is closed three (11) of motorised valves and four (14) of motorised valves are opened a little electrically operated valve two (9) are opened electrically operated valve (2), and the drainage of heat supply network is retrieved to in deaerator (3), then the warp water supply pipe (4) extremely feed water pump (5), high pressure feed water heater (6) and thermal power equipment such as economizer (7). The water quality monitoring instrument II (20) monitors that at least one index of a water sample before the inlet of the economizer (7) does not meet the standard requirement, at the moment, the drainage recovery automatic control system (21) receives a signal of the water quality monitoring instrument II (20), and a part of heat supply network drainage is recovered to the condenser (15) by opening the electric valve IV (14) and adjusting the opening degree of the electric valve IV; and meanwhile, when the dissolved oxygen index in the water quality monitoring instrument II (20) is unqualified, the opening degree of the electric valve II (9) is increased, and all indexes of the water quality monitoring instrument II (20) meet the standard requirement after the opening degrees of the electric valve IV (14) and the electric valve II (9) are adjusted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210735699.0A CN115059910A (en) | 2022-06-27 | 2022-06-27 | Device and method for controlling and optimizing drainage recovery of heat supply network |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210735699.0A CN115059910A (en) | 2022-06-27 | 2022-06-27 | Device and method for controlling and optimizing drainage recovery of heat supply network |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115059910A true CN115059910A (en) | 2022-09-16 |
Family
ID=83202642
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210735699.0A Pending CN115059910A (en) | 2022-06-27 | 2022-06-27 | Device and method for controlling and optimizing drainage recovery of heat supply network |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115059910A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114941863A (en) * | 2022-05-12 | 2022-08-26 | 华能(大连)热电有限责任公司 | Heat supply network drainage grading recovery device and recovery method thereof |
-
2022
- 2022-06-27 CN CN202210735699.0A patent/CN115059910A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114941863A (en) * | 2022-05-12 | 2022-08-26 | 华能(大连)热电有限责任公司 | Heat supply network drainage grading recovery device and recovery method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN115059910A (en) | Device and method for controlling and optimizing drainage recovery of heat supply network | |
| CN216311356U (en) | Auxiliary steam condensation water recovery system for low-power operation stage of high-temperature reactor | |
| CN113606646B (en) | Automatic control system and method for drainage recovery of heat supply network | |
| CN216645950U (en) | Cooling system for starting boiler sampling device | |
| JPS6179905A (en) | Drain recovery system | |
| CN212157107U (en) | Take heat supply function's once-through boiler to start hydrophobic waste heat utilization equipment | |
| CN210951268U (en) | Automatic blowdown heat recovery system of steam boiler | |
| CN207819678U (en) | Automatic water replenishing system | |
| CN113294773A (en) | Condensate water and heat supply network hydrophobic water mixing system applied to cogeneration unit | |
| CN114034030A (en) | System and method applied to fixed-exhaust waste heat recovery of gas-fired boiler | |
| CN209605460U (en) | Originally water circulation cooling device | |
| CN108443861B (en) | Energy-saving device for eliminating back pressure of closed condensate water recovery system | |
| CN220017338U (en) | Deaerator exhaust steam recovery heating control device | |
| CN212535792U (en) | Hydrophobic recovery unit of steam turbine | |
| CN208122900U (en) | Draining system before a kind of high pressure bypass valve | |
| CN111664435A (en) | Drainage recovery system and method during boiler blowpipe period | |
| CN220287421U (en) | Steam condensate recovery system | |
| CN219177686U (en) | Waste heat recovery system of deoxidizing box of boiler | |
| CN113188181A (en) | Heating drainage recovery device | |
| CN219259647U (en) | Condensate polishing operation system of thermal power plant | |
| CN212841789U (en) | Heating network heater heating system with anti-vibration function | |
| CN216346217U (en) | System for be applied to gas boiler and decide row waste heat recovery | |
| CN215982826U (en) | Automatic control system for drainage recovery of heat supply network | |
| CN220417290U (en) | Deaerator exhaust steam recycling system | |
| CN220870848U (en) | Automatic recovery system of steam condensate |
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 |