CN213421158U - Heat exchange system of water heating type air heater - Google Patents
Heat exchange system of water heating type air heater Download PDFInfo
- Publication number
- CN213421158U CN213421158U CN202022429931.7U CN202022429931U CN213421158U CN 213421158 U CN213421158 U CN 213421158U CN 202022429931 U CN202022429931 U CN 202022429931U CN 213421158 U CN213421158 U CN 213421158U
- Authority
- CN
- China
- Prior art keywords
- water
- pipeline
- flue gas
- heat exchanger
- 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.)
- Expired - Fee Related
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 338
- 238000010438 heat treatment Methods 0.000 title claims abstract description 21
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 108
- 239000003546 flue gas Substances 0.000 claims abstract description 108
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 claims abstract description 45
- 230000001105 regulatory effect Effects 0.000 claims description 5
- 239000000126 substance Substances 0.000 claims description 5
- 238000000034 method Methods 0.000 abstract description 5
- 230000001502 supplementing effect Effects 0.000 description 16
- 238000007599 discharging Methods 0.000 description 10
- 239000000779 smoke Substances 0.000 description 6
- 239000002918 waste heat Substances 0.000 description 5
- 239000007789 gas Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000013589 supplement Substances 0.000 description 2
- 239000008400 supply water Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003517 fume Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 208000011580 syndromic disease Diseases 0.000 description 1
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
Abstract
The utility model belongs to the technical field of heat transfer device, concretely relates to hot-water heating formula air heater heat transfer system and control method thereof. The main water supply pipeline is connected to a primary flue gas heat exchanger, the primary flue gas heat exchanger is connected to an inlet pipeline of a fan heater, the inlet pipeline of the fan heater is respectively connected to a primary air fan heater and an air supply fan heater which are connected in parallel, and outlets of the primary air fan heater and the air supply fan heater are connected to a main water return pipeline in parallel; the main water return pipeline is connected to a heat supply network water return main pipe through a first water return pipeline; the main water return pipeline is connected to a heat supply network water supply main pipe through a second water return pipeline; the main water return pipeline is connected to the flue gas water-water heat exchanger through a third water return pipeline; the flue gas water-water heat exchanger is connected to a main water supply pipeline. When the air temperature requirement of the inlet of the fan is met, the water side supply mode and the water return mode of the air heater can be replaced, the restriction condition is low, and the form is diversified.
Description
Technical Field
The utility model belongs to the technical field of heat transfer device, concretely relates to hot-water heating formula air heater heat transfer system.
Background
The existing water heating type air heater heat exchange system has single water supply side and return water side, and cannot reasonably adjust the system according to the operating environment, requirements and water supply and return temperature; in addition, the air temperature at the inlet of the air heater cannot be guaranteed, the waste heat of exhaust smoke generated by the boiler cannot be effectively utilized, the idea of energy conservation and environmental protection is not practiced, and the operation efficiency of the unit is reduced.
SUMMERY OF THE UTILITY MODEL
In view of the defects of the prior art, the utility model provides a hot-water heating formula fan heater heat transfer system, its removable fan heater water side feed mode and return water mode when satisfying fan entry wind temperature requirement, restriction condition is low, and the form is diversified.
In order to achieve the above object, the utility model provides a technical scheme is a hot-water heating formula air heater heat transfer system, and it includes that first water supply line, second water supply line, third water supply line, total water supply line, one-level flue gas trade
A water line, a third water return line;
the chemical water replenishing pipeline is connected to the main water supply pipeline through a first water supply pipeline;
the heat supply network water supply mother pipe is connected to the main water supply pipeline through a second water supply pipeline;
an outlet main pipe of the heat supply network circulating pump is connected to a main water supply pipeline through a third water supply pipeline;
the main water supply pipeline is connected to a primary flue gas heat exchanger, the primary flue gas heat exchanger is connected to an inlet pipeline of the air heater,
the inlet pipeline of the air heater is respectively connected to the primary air heater and the air supply air heater which are connected in parallel, and the outlets of the primary air heater and the air supply air heater are connected to the total water return pipeline in parallel;
the main water return pipeline is connected to a heat supply network water return main pipe through a first water return pipeline;
the main water return pipeline is connected to a heat supply network water supply main pipe through a second water return pipeline;
the main water return pipeline is connected to the flue gas water-water heat exchanger through a third water return pipeline;
the flue gas water-water heat exchanger is connected to a main water supply pipeline.
Furthermore, a first flue gas thermal circulation water pump and a second flue gas thermal circulation water pump which are connected in parallel are arranged on a pipeline of the main water supply pipeline connected to the primary flue gas heat exchanger.
Preferably, a regulating valve group is arranged on a pipeline from the first flue gas thermal circulation water pump and the second flue gas thermal circulation water pump which are connected in parallel to the first-stage flue gas heat exchanger.
Furthermore, a first fan air heater air release valve and a second fan air heater air release valve are respectively arranged on the primary air heater and the air supply air heater.
Furthermore, a bypass pipeline is arranged between the main water supply pipeline and the inlet pipeline of the air heater, and a bypass valve is arranged on the bypass pipeline.
Furthermore, a first valve, a water replenishing tank and a second valve are sequentially arranged on the first water supply pipeline.
Further, a third valve is arranged on the second water supply pipeline.
Further, a fourth valve is arranged on the third water supply pipeline.
Furthermore, the inlet pipeline of the air heater is connected to a main water return pipeline through a cross line, and a cross line valve is arranged on the cross line.
Further, a fifth valve is arranged on the first water return line; a sixth valve is arranged on the second water return pipeline; and a circulating water side water supply valve of the flue gas water-water heat exchanger is arranged on the third water return pipeline.
Furthermore, a condensed water inlet pipeline of the first low-pressure heater is connected to the flue gas water-water heat exchanger, and the flue gas water-water heat exchanger is connected to a condensed water inlet pipeline of the second low-pressure heater.
Furthermore, a pipeline pump is arranged on a pipeline of the first low-pressure heater condensed water inlet pipeline connected to the flue gas water-water heat exchanger.
Furthermore, a return water valve at the circulating water side of the flue gas water-water heat exchanger is arranged on a pipeline from the main water supply pipeline to the flue gas water-water heat exchanger.
Based on the utility model discloses a control method of hot-water heating formula air heater heat transfer system, including winter period control method, concrete step:
step 1: confirming that the heat supply network system is put into operation;
step 2: closing a water supplementing manual door of a water supplementing tank, the water supplementing tank to a water supplying manual door of the flue gas heat exchanger, closing a water supplying valve at the circulating water side of the flue gas water-water heat exchanger and a water returning valve at the circulating water side of the flue gas water-water heat exchanger, closing a water discharging valve of the primary flue gas heat exchanger, closing a cross-line valve, and opening a discharging valve of the primary flue gas heat exchanger, a total manual valve of an inlet of the fan heater and a discharging valve of the fan heater;
and step 3: slightly opening a water supply door and a water return door of the heat supply network to the flue gas heat exchanger; at the moment, the second water supply pipeline or the third water supply pipeline supplies water, and the first water return pipeline or the second water return pipeline returns water; the water supply line injects water into the system, and the air release valve of the primary flue gas heat exchanger and the air release valve of the fan air heater are closed after water breakthrough;
and 4, step 4: starting a flue gas circulating pump, adjusting the temperature of the primary flue gas heat exchanger by using an outlet adjusting valve group, and adjusting the outlet air temperature of each air heater by using a fan air heater return valve group.
The control method of the heat exchange system of the water heating type air heater also comprises a summer period control method, and comprises the following specific steps:
step 1: confirming that a condensate system of the flue gas water-water heat exchanger operates normally;
step 2: closing a condensate side water drain valve of the flue gas water-water heat exchanger, opening a gas drain valve, confirming that an inlet and an outlet of a condensate booster pump are closed, and closing a pneumatic regulating valve;
and step 3: slightly opening an inlet valve of the condensate booster pump to inject water into the system, and closing the air release valve after water is leaked;
and 4, step 4: confirming that the heat supply network water, namely the second water supply pipeline or the third water supply pipeline and the first water return pipeline or the second water return pipeline are closed; opening a cross-line valve and closing a general manual valve at the inlet of the air heater; opening an inlet and outlet door of the primary flue gas heat exchanger, closing a drain door of the primary flue gas heat exchanger, and opening a drain valve of the primary flue gas heat exchanger; opening a water supplementing manual door of a water supplementing tank, supplementing water to a normal position by the water supplementing tank, opening the water supplementing tank to supplement water to a water supplying manual door of the flue gas heat exchanger, opening a circulating water side water supplying valve and a circulating water side water returning valve of the flue gas water-water heat exchanger, and closing the water discharging valve after water meets;
and 5: starting a flue gas circulating pump, and adjusting the outlet water temperature of the primary flue gas heat exchanger by using an outlet adjusting valve;
step 6: and starting the condensate booster pump, and putting the flue gas water-water heat exchanger into operation.
To further explain the utility model, the system has three water supply paths, namely a first water supply line, a second water supply line and a third water supply line; the three routes return water are first return water pipeline, second return water pipeline, third return water pipeline respectively, and based on above water supply line and return water pipeline, this system has following operation mode:
in the first operation mode, when the first water supply pipeline is used as a water source, the return water can only return to the third water return pipeline to form a closed circulation operation mode due to the fact that the return water flows into the inlet through static pressure. In the case that the unit does not perform urban central heating and the fan heater with low ambient temperature needs to be put into operation, the circulating water of the original flue gas water-water heat exchanger is used as the heat source of the fan heater, and whether the condensed water side of the flue gas water-water heat exchanger is put into operation can be determined according to the return water temperature of the fan heater, so that the effective utilization of the waste heat of the discharged smoke is ensured.
In the second operation mode, when the second water supply pipeline is used as a water source, whether the backwater returns to the second backwater pipeline or the third backwater pipeline can be determined according to the backwater temperature of the air heater and the operation requirement. The second water supply pipeline is taken from the main water supply pipe of the heat supply network as a water source, so that the water source temperature of the fan air heater can be ensured in any state of the unit, and the air temperature of the inlet of the fan can be ensured. Even if the flue gas heat transfer system goes wrong and can not effectively utilize when discharging fume the waste heat, through opening the bypass valve, the second water supply pipe line also can guarantee through the bypass pipeline that the air heater normally drops into the operation.
In the third operation mode, when the third water supply pipeline is used as a water source, whether the backwater returns to the second backwater pipeline or the third backwater pipeline can be determined according to the backwater temperature of the air heater and the operation requirement. The third water supply pipeline is taken from the outlet main pipe of the circulating pump of the heating network as a water source, the water supply temperature of the third water supply pipeline is between the first water supply and the second water supply, the waste heat of the discharged smoke of the boiler can be effectively utilized, and the water source temperature of the fan air heater is ensured simultaneously, so that the air temperature of the inlet of the fan is ensured. (the use of a third water supply line as the water source is similar to the second water supply line except that the temperature of the circulating water being supplied is different).
The utility model discloses a characteristics explain:
1. the system is not influenced by the ambient temperature and can be put into use at any time when the unit requires.
2. The unit can guarantee fast that fan entry wind-warm syndrome is full of needs requirement when starting the machine under ambient temperature zero.
3. The boiler exhaust heat is reasonably utilized to heat the air heater to supply water, and the overall efficiency of the unit is improved.
4. The requirements of the steam type air heater on the warm pipe time required during initial feeding, the steam pressure required to be met, the drainage quality, the recovery mode and the like do not need to be considered, the feeding is not complicated, the operation and the adjustment are simple, and the equipment feeding and the maintenance cost are reduced.
5. The water supply can be switched by three paths through chemical water supply, a heat supply network water supply main pipe and a heat supply network circulating pump outlet main pipe, and the return water can return to the heat supply network water supply main pipe or the return water main pipe as required, and can also form closed circulation.
6. After the fan air heater is shut down, the system also keeps the original function of the flue gas water-water heat exchanger, and utilizes the waste heat of the flue gas to heat the condensed water in summer.
The utility model discloses beneficial effect: the water side supply mode and the water return mode of the air heater can be changed at any time according to requirements, the mode is diversified, the operation mode is more flexible, the overall utilization rate of the system is increased, and the unit efficiency is further improved.
Drawings
Fig. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the operation of the present invention;
FIG. 3 is a schematic view of the operation of the present invention during the winter period;
FIG. 4 is a schematic view of the operation of the present invention in summer;
in the figure: 1. a first water supply pipeline, 2, a second water supply pipeline, 3, a third water supply pipeline, 4, a total water supply pipeline, 5, a primary flue gas heat exchanger, 6, a heater inlet pipeline, 7, a heater outlet pipeline, 8, a total water return pipeline, 9, a first water return pipeline, 10, a second water return pipeline, 11, a third water return pipeline, 12, a chemical water supply pipeline, 13, a heat supply network water supply main pipe, 14, a heat supply network circulating pump outlet main pipe, 15, a primary heater, 16, an air supply heater, 17, a heat supply network water return main pipe, 18, a flue gas water-water heat exchanger, 19, a first flue gas heat circulation water pump, 20, a second flue gas heat circulation water pump, 21, a bypass pipeline, 22, a bypass valve, 23, a first valve, 24, a water supply tank, 25, a second valve, 26, a third valve, 27, a fourth valve, 28, a crossover line, 29, a crossover line valve, 30, a fifth valve, 31. the system comprises a sixth valve, a 32, a water supply valve at the circulating water side of the flue gas water-water heat exchanger, 33, #7 condensed water inlet pipeline, 34, #6 condensed water inlet pipeline, 35, a pipeline pump, 36, an adjusting valve group, 37, a return water valve at the circulating water side of the flue gas water-water heat exchanger, 38, a total manual valve at the inlet of the air heater, 39, a first return water valve group, 40, a second return water valve group, 41, a discharge valve of the first fan air heater, 42, a discharge valve of the second fan air heater, 43 and a discharge valve of the primary flue gas heat exchanger.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clear, the following description is made with reference to the accompanying drawings and specific examples.
Example 1
A water heating type air heater heat exchange system comprises a first water supply pipeline 1, a second water supply pipeline 2, a third water supply pipeline 3, a main water supply pipeline 4, a primary flue gas heat exchanger 5, an air heater inlet pipeline 6, an air heater outlet pipeline 7, a main water return pipeline 8, a first water return pipeline 9, a second water return pipeline 10 and a third water return pipeline 11;
the chemical makeup water line 12 is connected to the main water supply line 4 through the first water supply line 1;
the heat supply network water supply main pipe 13 is connected to the main water supply pipe 4 through the second water supply pipe 2;
the outlet main pipe 14 of the heat supply network circulating pump is connected to the main water supply line 4 through a third water supply line;
the main water supply pipeline 4 is connected to a primary flue gas heat exchanger 5, the primary flue gas heat exchanger 5 is connected to an inlet pipeline 6 of the air heater,
the inlet pipeline 6 of the air heater is respectively connected to the primary air heater 15 and the air supply air heater 16 which are connected in parallel, and the outlets of the primary air heater 15 and the air supply air heater 16 are connected to the total water return pipeline 8 in parallel;
the main water return pipeline 8 is connected to a heat supply network water return main pipe 17 through a first water return pipeline 9;
the main water return pipeline 8 is connected to a heat supply network water supply main pipe 13 through a second water return pipeline 10;
the main water return pipeline 8 is connected to a flue gas water-water heat exchanger 18 through a third water return pipeline 11;
the flue gas water-water heat exchanger 18 is connected to the mains water supply line 4.
Furthermore, a first flue gas thermal circulation water pump 19 and a second flue gas thermal circulation water pump 20 which are connected in parallel are arranged on a pipeline of the main water supply pipeline 4 connected to the first-stage flue gas heat exchanger 5.
And a regulating valve group 36 is arranged from the first flue gas thermal circulation water pump 19 and the second flue gas thermal circulation water pump 20 to the first-stage flue gas heat exchanger 5 which are connected in parallel.
Further, a first fan heater air release valve 41 and a second fan heater air release valve 42 are respectively arranged on the primary air heater 15 and the air supply air heater 16.
Furthermore, a bypass pipeline 21 is arranged between the main water supply pipeline 4 and the inlet pipeline 6 of the air heater, and a bypass valve 22 is arranged on the bypass pipeline 21.
Further, a first valve 23, a water replenishing tank 24 and a second valve 25 are sequentially arranged on the first water supply line 1.
Further, a third valve 26 is provided in the second water supply line 2.
Further, a fourth valve 27 is provided in the third water supply line 3.
Further, the inlet pipeline 6 of the air heater is connected to the total water return pipeline 8 through a crossover 28, and a crossover valve 29 is arranged on the crossover 28.
Further, a fifth valve 30 is arranged on the first return line 9; a sixth valve 31 is arranged on the second water return pipeline 10; and a circulating water side water supply valve 32 of the flue gas water-water heat exchanger is arranged on the third water return pipeline 11.
Further, a #7 low pressure heater condensed water inlet line 33 is connected to the flue gas water-water heat exchanger 18, and the flue gas water-water heat exchanger 18 is connected to a #6 low pressure heater condensed water inlet line 34.
Further, a tubing pump 35 is provided on the tubing of the #7 low pressure heater condensed water inlet line 33 connected to the flue gas water-water heat exchanger 18.
Further, a circulating water side water return valve 37 of the flue gas water-water heat exchanger is arranged on a pipeline from the main water supply pipeline 4 to the flue gas water-water heat exchanger 18.
The commissioning of the present example is explained:
as shown in fig. 3, the first case, the winter period.
Step 1: confirming that the heat supply network system is put into operation;
step 2: closing the water supplementing manual valve of the water supplementing tank, closing the water supplementing tank 24 to the water supplying manual valve (the second valve 25) of the flue gas heat exchanger, closing the water supplying valve 32 at the circulating water side of the flue gas water-water heat exchanger and the water returning valve 37 at the circulating water side of the flue gas water-water heat exchanger, closing the water discharging valve of the primary flue gas heat exchanger, closing the overline valve 29, and opening the air discharging valve 43 of the primary flue gas heat exchanger, the inlet general manual valve 38 of the fan heater and the air discharging valve (the air discharging valve 41 of the first fan heater and the air discharging valve 42 of the second fan heater).
And step 3: slightly opening the heat supply network to the water supply and return valves of the flue gas heat exchanger (the water supply valves are the third valve 26 and the fourth valve 27; the water return valves are the fifth valve 30 and the sixth valve 31); at this time, the second water supply line 2 or the third water supply line 3 supplies water, and the first water return line 9 or the second water return line 10 returns water. The water supply line injects water into the system, and the air release valve 43 of the primary flue gas heat exchanger and the air release valve of the fan heater (the air release valve 41 of the first fan heater and the air release valve 42 of the second fan heater) are closed after water breakthrough.
And 4, step 4: starting a flue gas circulating pump (a first flue gas thermal circulating water pump 19 or a second flue gas thermal circulating water pump 20), adjusting the temperature of the 5-stage flue gas heat exchanger by using an outlet adjusting valve group 36, and adjusting the outlet air temperature of each air heater by using a fan air heater return valve group (a first return valve group 39 and a second return valve group 40).
The second case, summer time, is shown in fig. 4.
Step 1: confirming that the condensate system of the flue gas water-water heat exchanger 18 is operating normally;
step 2: and closing a condensate side water drain valve of the flue gas water-water heat exchanger, opening a gas drain valve, confirming that an inlet and outlet of the condensate booster pump is closed, and closing a pneumatic regulating valve.
And step 3: slightly opening the inlet valve of the condensate booster pump to fill water into the system, and closing the air release valve after water is leaked.
And 4, step 4: the closing of the heat supply network water, i.e. the second water supply line 2 or the third water supply line 3 and the first water return line 9 or the second water return line 10 (to the flue gas heat exchanger supply water return gate) is confirmed. The crossover valve 29 is opened and the heater inlet main manual valve 38 is closed. The inlet and outlet doors of the primary flue gas heat exchanger 5 are opened, the drain door of the primary flue gas heat exchanger is closed, and the drain valve 43 of the primary flue gas heat exchanger is opened. And (3) opening a water supplementing tank water supplementing manual valve, supplementing water to a normal position by the water supplementing tank 24, opening the water supplementing tank 24 to supplement water to the smoke heat exchanger water supply manual valve (a second valve 25), opening a smoke water-water heat exchanger circulating water side water supply valve 32 and a smoke water-water heat exchanger circulating water side water return valve 37, and closing the water release valve after water breakthrough.
And 5: starting a flue gas circulating pump (a first flue gas thermal circulating water pump 19 or a second flue gas thermal circulating water pump 20), and adjusting the water outlet temperature of the primary flue gas heat exchanger 5 by using an outlet adjusting valve.
Step 6: the condensate booster pump is started and the flue gas water-water heat exchanger 18 is put into operation.
The above description is only for the preferred embodiment of the present invention, and not intended to limit the present invention in any way, and those skilled in the art can make various modifications, equivalent changes and modifications using the above-described technical content, all of which fall within the scope of the present invention.
Claims (9)
1. The utility model provides a hot-water heating formula air heater heat transfer system which characterized in that:
the system comprises a first water supply pipeline, a second water supply pipeline, a third water supply pipeline, a main water supply pipeline, a primary flue gas heat exchanger, a heater inlet pipeline, a heater outlet pipeline, a main water return pipeline, a first water return pipeline, a second water return pipeline and a third water return pipeline;
the chemical water replenishing pipeline is connected to the main water supply pipeline through a first water supply pipeline;
the heat supply network water supply mother pipe is connected to the main water supply pipeline through a second water supply pipeline;
an outlet main pipe of the heat supply network circulating pump is connected to a main water supply pipeline through a third water supply pipeline;
the main water supply pipeline is connected to a primary flue gas heat exchanger, the primary flue gas heat exchanger is connected to an inlet pipeline of the air heater,
the inlet pipeline of the air heater is respectively connected to the primary air heater and the air supply air heater which are connected in parallel, and the outlets of the primary air heater and the air supply air heater are connected to the total water return pipeline in parallel;
the main water return pipeline is connected to a heat supply network water return main pipe through a first water return pipeline;
the main water return pipeline is connected to a heat supply network water supply main pipe through a second water return pipeline;
the main water return pipeline is connected to the flue gas water-water heat exchanger through a third water return pipeline;
the flue gas water-water heat exchanger is connected to a main water supply pipeline.
2. The heat exchange system of the water heating type air heater according to claim 1, wherein: and the main water supply pipeline is connected to a pipeline of the primary flue gas heat exchanger and is provided with a first flue gas thermal circulation water pump and a second flue gas thermal circulation water pump which are connected in parallel.
3. The heat exchange system of the water heating type air heater according to claim 1, wherein: a regulating valve group is arranged on a pipeline from the first flue gas thermal circulation water pump and the second flue gas thermal circulation water pump which are connected in parallel to the first-stage flue gas heat exchanger; and the primary air heater and the air supply heater are respectively provided with a first fan heater air release valve and a second fan heater air release valve.
4. The heat exchange system of the water heating type air heater according to claim 1, wherein: a first valve, a water replenishing tank and a second valve are sequentially arranged on the first water supply pipeline; a third valve is arranged on the second water supply pipeline; and a fourth valve is arranged on the third water supply pipeline.
5. The heat exchange system of the water heating type air heater according to claim 1, wherein: the inlet pipeline of the air heater is connected to a main water return pipeline through a cross line, and a cross line valve is arranged on the cross line.
6. The heat exchange system of the water heating type air heater according to claim 1, wherein: a fifth valve is arranged on the first water return pipeline; a sixth valve is arranged on the second water return pipeline; and a circulating water side water supply valve of the flue gas water-water heat exchanger is arranged on the third water return pipeline.
7. The heat exchange system of the water heating type air heater according to claim 1, wherein: the first low-pressure heater condensed water inlet pipeline is connected to the flue gas water-water heat exchanger, and the flue gas water-water heat exchanger is connected to the second low-pressure heater condensed water inlet pipeline.
8. The heat exchange system of the water heating type air heater according to claim 7, wherein: and a pipeline pump is arranged on the pipeline of the first low-pressure heater condensed water inlet pipeline connected to the flue gas water-water heat exchanger.
9. The heat exchange system of the water heating type air heater according to claim 1, wherein: and a pipeline from the main water supply pipeline to the flue gas water-water heat exchanger is provided with a circulating water side water return valve of the flue gas water-water heat exchanger.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022429931.7U CN213421158U (en) | 2020-10-28 | 2020-10-28 | Heat exchange system of water heating type air heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022429931.7U CN213421158U (en) | 2020-10-28 | 2020-10-28 | Heat exchange system of water heating type air heater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213421158U true CN213421158U (en) | 2021-06-11 |
Family
ID=76248355
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022429931.7U Expired - Fee Related CN213421158U (en) | 2020-10-28 | 2020-10-28 | Heat exchange system of water heating type air heater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213421158U (en) |
-
2020
- 2020-10-28 CN CN202022429931.7U patent/CN213421158U/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101182940B (en) | Solar hot water supply system and heating means thereof | |
| CN203099961U (en) | Circulating water heat-supply system of thermal power plant | |
| CN107940439A (en) | A kind of boiler smoke heat energy recycling system | |
| CN108194052A (en) | A kind of mine water residual heat direct heating system | |
| CN207728346U (en) | A kind of mine water residual heat direct heating system | |
| CN214370493U (en) | Intelligent adjustment exhaust steam upgrading heat energy gradient utilization heating system | |
| CN213421158U (en) | Heat exchange system of water heating type air heater | |
| CN107152711B (en) | Multi-plant waste heat combined utilization system and method | |
| CN207394813U (en) | Low low-level (stack-gas) economizer Two-way Cycle heating system | |
| CN112146122A (en) | Heat exchange system of water heating type air heater and control method thereof | |
| CN213453819U (en) | Clean energy heating plant | |
| CN205079325U (en) | Hot water supply system of first kind and coupling of second class absorption heat pump | |
| CN211011462U (en) | System for utilize condensate water to improve air heater and adjust cold and hot overgrate air temperature | |
| CN110530029B (en) | Flue gas waste heat recovery system of hot water boiler | |
| CN205208536U (en) | Full load flue gas waste heat utilization system | |
| KR101866025B1 (en) | Heating and hot water device of the central type | |
| CN110645628A (en) | Water-saving and energy-saving heat supply and water replenishing system and using method thereof | |
| CN205448402U (en) | Full -automatic cooling / heat and heating water system of direct -fired machine and solar energy coupling | |
| CN114810242B (en) | Comprehensive utilization method and system for energy of back pressure turbine steam source | |
| CN210050877U (en) | Water-saving and energy-saving heat supply and water supply system | |
| CN201621682U (en) | Assembled steam system energy-saving device | |
| CN217538807U (en) | Condenser circulating water waste heat utilization equipment based on heat pump | |
| CN220379821U (en) | Heat supply network primary water return water waste heat utilization pipeline | |
| CN215491228U (en) | Steam condensate heat recovery unit | |
| CN218269023U (en) | Boiler blowdown drainage continuous-discharge and fixed-discharge working medium and heat comprehensive utilization system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| 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: 20210611 |