CN111023067A - Hot water circulating system - Google Patents
Hot water circulating system Download PDFInfo
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- CN111023067A CN111023067A CN201911268201.9A CN201911268201A CN111023067A CN 111023067 A CN111023067 A CN 111023067A CN 201911268201 A CN201911268201 A CN 201911268201A CN 111023067 A CN111023067 A CN 111023067A
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- hot water
- heat exchanger
- water
- outlet
- pipe
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B31/00—Modifications of boiler construction, or of tube systems, dependent on installation of combustion apparatus; Arrangements of dispositions of combustion apparatus
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B37/00—Component parts or details of steam boilers
- F22B37/02—Component parts or details of steam boilers applicable to more than one kind or type of steam boiler
- F22B37/34—Adaptations of boilers for promoting water circulation
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B37/00—Component parts or details of steam boilers
- F22B37/02—Component parts or details of steam boilers applicable to more than one kind or type of steam boiler
- F22B37/48—Devices for removing water, salt, or sludge from boilers; Arrangements of cleaning apparatus in boilers; Combinations thereof with boilers
- F22B37/54—De-sludging or blow-down devices
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Heat-Pump Type And Storage Water Heaters (AREA)
Abstract
The invention discloses a hot water circulating system, which comprises a hot water tank and a first water pump connected with the hot water tank, wherein the outlet end of the first water pump is sequentially connected with two hot water furnaces and a second water pump, and the outlet pipeline of the second water pump is connected with a first branch pipe and a second branch pipe; the first branch pipe is connected with at least one first heat exchanger, an outlet pipeline of the first heat exchanger is connected to a water inlet pipe of the water heater, the second branch pipe is connected with at least one second heat exchanger, and an outlet pipeline of the second heat exchanger is connected to a water inlet pipe of the water heater. The hot water circulating system provided by the invention adopts the two water heating furnaces which are connected in series, and the hot water is heated to the proper temperature by twice, so that the situation that a steam boiler is adopted for heating in the prior art is avoided, and the hot water heating operation is simpler and safer.
Description
Technical Field
The invention relates to the technical field of public engineering equipment, in particular to a hot water circulating system.
Background
In the strip steel pickling process, the pickling solution needs to be heated by using circulating hot water so as to maintain the pickling solution within a certain temperature range, and in the prior art, a steam boiler is usually adopted to generate steam to heat the circulating hot water. However, the steam boiler belongs to a pressure vessel and has certain safety hazards. Therefore, a hot water circulating system which is convenient to operate and runs safely is needed to heat the pickling solution, and the potential safety hazard in the running process is reduced.
It is seen that improvements and enhancements to the prior art are needed.
Disclosure of Invention
In view of the above disadvantages of the prior art, the present invention is directed to a hot water circulation system, which solves the technical problem of the prior art that a steam boiler is used in a hot water circulation system to heat circulating hot water.
In order to achieve the purpose, the invention adopts the following technical scheme:
a hot water circulating system comprises a hot water tank and a first water pump connected with the hot water tank, wherein the outlet end of the first water pump is sequentially connected with two hot water furnaces and a second water pump, and an outlet pipeline of the second water pump is connected with a first branch pipe and a second branch pipe; the first branch pipe is connected with at least one first heat exchanger, an outlet pipeline of the first heat exchanger is connected to a water inlet pipe of the water heater, the second branch pipe is connected with at least one second heat exchanger, and an outlet pipeline of the second heat exchanger is connected to a water inlet pipe of the water heater.
In the hot water circulating system, a first branch pipe is connected with two first heat exchangers in parallel, outlet pipelines of the two first heat exchangers are connected to a water inlet pipe of a water heater in parallel, and an inlet pipeline of each first heat exchanger is provided with a first inlet valve; the second branch pipe is connected with two second heat exchangers in parallel, outlet pipelines of the two second heat exchangers are connected to a water inlet pipe of the water heater in parallel, and a second inlet valve is arranged on an inlet pipeline of each second heat exchanger.
In the hot water circulation system, the two first heat exchangers and the two second heat exchangers are graphite heat exchangers.
In the hot water circulating system, the first water pump and the second water pump are both centrifugal pumps.
In the hot water circulating system, the two hot water furnaces are the same in specification, each hot water furnace comprises a shell, a burner, a hot water tank arranged in the shell, and a water inlet pipe and a water outlet pipe which are connected with the hot water tank, a steam pipe is arranged at the top of the hot water tank, and the steam pipe extends out of the shell upwards; the shell is also provided with a third heat exchanger, an exhaust fan and an induced draft fan; an inlet pipeline of the exhaust fan is communicated with the top of the inner cavity of the shell, and an outlet pipeline of the exhaust fan is connected to the inlet end of the first channel of the third heat exchanger; the outlet end of the first channel of the third heat exchanger is connected with a first exhaust pipeline; the inlet end of a second channel of the third heat exchanger is communicated with the atmosphere, the outlet end of the second channel of the third heat exchanger is connected to an induced draft fan through a second exhaust pipeline, and an outlet pipeline of the induced draft fan is connected to the combustor.
Has the advantages that:
compared with the prior art, the hot water circulating system provided by the invention has the advantages that two hot water furnaces are arranged in series, and hot water is heated to a proper temperature twice, so that the condition that a steam boiler is adopted for heating in the prior art is avoided, and the hot water heating operation is simpler and safer. Furthermore, two first heat exchangers are arranged in parallel, and two second heat exchangers are arranged in parallel, so that the standby function is achieved, and the hot water circulation quantity can be conveniently adjusted.
Drawings
Fig. 1 is a schematic diagram of the operation of the hot water circulation system provided by the present invention.
Fig. 2 is a schematic diagram of a structure of a water heater in the hot water circulation system provided by the invention.
Detailed Description
The present invention provides a hot water circulation system, and in order to make the objects, technical solutions and effects of the present invention clearer and clearer, the present invention will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1 and 2, the present invention provides a hot water circulation system. The direction of the hot water circulation flow is indicated by the arrows in fig. 1.
The hot water circulating system comprises a hot water tank 1 and a first water pump 2 connected with the hot water tank, the outlet end of the first water pump is sequentially connected with two hot water furnaces 3 and a second water pump 4, and the outlet pipeline of the second water pump 4 is connected with a first branch pipe 51 and a second branch pipe 52; the first branch pipe 51 is connected with at least one first heat exchanger 61, an outlet pipe of the first heat exchanger 61 is connected to an inlet pipe of the hot water boiler 1, the second branch pipe 52 is connected with at least one second heat exchanger 52, and an outlet pipe of the second heat exchanger 52 is connected to an inlet pipe 321 of the hot water boiler 1.
Specifically, the first branch pipe 51 is connected with two first heat exchangers 61 in parallel, outlet pipes of the two first heat exchangers 61 are connected to a water inlet pipe of the water heater 1 in parallel, and an inlet pipe of each first heat exchanger 61 is provided with a first inlet valve 71; the second branch pipe 52 is connected with two second heat exchangers 62 in parallel, outlet pipes of the two second heat exchangers 62 are connected to a water inlet pipe of the water heater 1 in parallel, and an inlet pipe of each second heat exchanger 62 is provided with a second inlet valve 72. The two first heat exchangers and the second heat exchanger are arranged in parallel, so that the standby function of the heat exchangers is achieved, and the normal operation of a hot water circulating system cannot be influenced even if one first heat exchanger or one second heat exchanger needs to be overhauled; the number of heat exchangers actually put into use can also be selected to adjust the amount of hot water circulation.
Preferably, both the two first heat exchangers 61 and the two second heat exchangers 62 are graphite heat exchangers. The graphite heat exchanger has good anti-corrosion effect, can be suitable for heat exchange of selected washing liquid and keeps long service life.
Preferably, the first water pump 2 and the second water pump 4 are both centrifugal pumps.
Preferably, the two water heaters 3 have the same specification, each water heater 3 comprises a housing 31, a burner (not shown), a hot water tank 32 disposed in the housing, and a water inlet pipe 321 and a water outlet pipe 322 connected to the hot water tank, and a steam pipe 323 is disposed on the top of the hot water tank, and the steam pipe 323 extends upward out of the housing; the shell is also provided with a third heat exchanger 34, an exhaust fan 35 and an induced draft fan 36; the inlet pipe 351 of the exhaust fan is communicated with the top of the inner cavity of the shell, and the outlet pipe 352 of the exhaust fan is connected to the inlet end of the first channel of the third heat exchanger 34; the outlet end of the first passage of the third heat exchanger is connected to a first exhaust duct 3412; the inlet end of the second channel of the third heat exchanger is communicated with the atmosphere, the outlet end of the second channel of the third heat exchanger is connected to an induced draft fan 36 through a second exhaust duct 3422, and an outlet duct 362 of the induced draft fan is connected to a burner for burning natural gas. Since the burner itself is prior art, the specific structure of the burner is not shown in the drawings, only a schematic view of the burner tip 33 thereof is shown. In practical applications, the casing 31 is usually made of a heat insulating material, so that the heat in the casing is prevented from being dissipated to the surrounding environment through the casing, and of course, a heat insulating layer may be disposed outside the casing to achieve the purpose of heat insulation. The side walls of the hot water tank are typically made of a refractory material.
When the water heater actually operates, the burner is connected with an external natural gas pipeline to ignite the burner; the induced draft fan and the exhaust fan are started, waste gas generated after combustion of natural gas in the shell has certain waste heat, the waste gas is pumped to the heat exchanger by the exhaust fan to be in air heat exchange, then the waste gas is discharged from the first exhaust pipeline of the third heat exchanger, and the air is pumped to the combustor by the induced draft fan after being heated in the heat exchanger to serve as combustion-supporting air, so that the combustion effect of the natural gas is improved. Even a small amount of steam generated during the operation of the water heater can be discharged through the steam pipe, in other words, the water heater is a normal pressure device rather than a pressure vessel.
The following brief description is made on the working principle: the hot water in the hot water tank is pumped to the first hot water furnace by the first water pump to be heated and heated, then flows into the second hot water furnace to be heated and heated again, and is pumped by the second water pump to be branched into the first branch pipe and the second branch pipe, the hot water in the first branch pipe returns to the hot water tank after passing through the first heat exchanger, and the hot water in the second branch pipe returns to the hot water tank after passing through the second heat exchanger, so that hot water circulation is formed. The pickling solution in the strip steel pickling device (not shown in the figure) is heated by heat exchange of the first heat exchanger and the second heat exchanger and then returns to the strip steel pickling device again, so that the pickling solution is maintained within a certain temperature range.
As can be seen from the above analysis, the hot water circulation system provided by the present invention mainly has the following advantages: (1) two water heating furnaces are arranged in series, and hot water is heated to a proper temperature twice, so that the situation that a steam boiler is adopted for heating in the prior art is avoided, and the hot water heating operation is simpler and safer. (2) Furthermore, two first heat exchangers are arranged in parallel, and two second heat exchangers are arranged in parallel, so that the standby function is achieved, and the hot water circulation quantity can be conveniently adjusted.
It should be understood that equivalents and modifications of the technical solution and inventive concept thereof may occur to those skilled in the art, and all such modifications and alterations should fall within the protective scope of the present invention.
Claims (5)
1. A hot water circulating system comprises a hot water tank and a first water pump connected with the hot water tank, and is characterized in that the outlet end of the first water pump is sequentially connected with two hot water furnaces and a second water pump, and the outlet pipeline of the second water pump is connected with a first branch pipe and a second branch pipe; the first branch pipe is connected with at least one first heat exchanger, an outlet pipeline of the first heat exchanger is connected to a water inlet pipe of the water heater, the second branch pipe is connected with at least one second heat exchanger, and an outlet pipeline of the second heat exchanger is connected to a water inlet pipe of the water heater.
2. The hot water circulation system according to claim 1, wherein the first branch pipe is connected with two first heat exchangers in parallel, outlet pipelines of the two first heat exchangers are connected with a water inlet pipe of the hot water boiler in parallel, and an inlet pipeline of each first heat exchanger is provided with a first inlet valve; the second branch pipe is connected with two second heat exchangers in parallel, outlet pipelines of the two second heat exchangers are connected to a water inlet pipe of the water heater in parallel, and a second inlet valve is arranged on an inlet pipeline of each second heat exchanger.
3. The hot water circulation system according to claim 2, wherein the two first heat exchangers and the two second heat exchangers are both graphite heat exchangers.
4. The hot water circulation system according to claim 3, wherein the first and second water pumps are each a centrifugal pump.
5. The hot water circulation system according to claim 1, wherein the two hot water boilers are identical in size, each hot water boiler comprises a housing, a burner, a hot water tank disposed in the housing, and a water inlet pipe and a water outlet pipe connected to the hot water tank, a steam pipe is disposed on a top of the hot water tank, and the steam pipe extends upward out of the housing; the shell is also provided with a third heat exchanger, an exhaust fan and an induced draft fan; an inlet pipeline of the exhaust fan is communicated with the top of the inner cavity of the shell, and an outlet pipeline of the exhaust fan is connected to the inlet end of the first channel of the third heat exchanger; the outlet end of the first channel of the third heat exchanger is connected with a first exhaust pipeline; the inlet end of a second channel of the third heat exchanger is communicated with the atmosphere, the outlet end of the second channel of the third heat exchanger is connected to an induced draft fan through a second exhaust pipeline, and an outlet pipeline of the induced draft fan is connected to the combustor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911268201.9A CN111023067A (en) | 2019-12-11 | 2019-12-11 | Hot water circulating system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911268201.9A CN111023067A (en) | 2019-12-11 | 2019-12-11 | Hot water circulating system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111023067A true CN111023067A (en) | 2020-04-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911268201.9A Pending CN111023067A (en) | 2019-12-11 | 2019-12-11 | Hot water circulating system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117481511A (en) * | 2023-08-03 | 2024-02-02 | 江门市美兹智能科技有限公司 | Multifunctional high-efficiency coffee machine |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101042259A (en) * | 2006-10-10 | 2007-09-26 | 许志治 | Step heating method of heat pump and its uses thereof for heat recovery hot-water boiler |
| CN202158652U (en) * | 2011-07-01 | 2012-03-07 | 吴勇 | High-efficient energy-saving water heater |
| JP2012241259A (en) * | 2011-05-23 | 2012-12-10 | Babcock Hitachi Kk | System for chemical cleaning within boiler unit |
| CN203546148U (en) * | 2013-10-18 | 2014-04-16 | 湖南湘投金天钛金属有限公司 | On-line temperature control system for acid-pickling solution |
| CN104236080A (en) * | 2013-06-19 | 2014-12-24 | 黄石鑫华轮毂有限公司 | Coating pretreatment hot-water circulating heating device for automobile hubs |
| CN208332662U (en) * | 2018-03-20 | 2019-01-04 | 北京中力创业机电设备有限公司 | Preheating type hot water boiler |
-
2019
- 2019-12-11 CN CN201911268201.9A patent/CN111023067A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101042259A (en) * | 2006-10-10 | 2007-09-26 | 许志治 | Step heating method of heat pump and its uses thereof for heat recovery hot-water boiler |
| JP2012241259A (en) * | 2011-05-23 | 2012-12-10 | Babcock Hitachi Kk | System for chemical cleaning within boiler unit |
| CN202158652U (en) * | 2011-07-01 | 2012-03-07 | 吴勇 | High-efficient energy-saving water heater |
| CN104236080A (en) * | 2013-06-19 | 2014-12-24 | 黄石鑫华轮毂有限公司 | Coating pretreatment hot-water circulating heating device for automobile hubs |
| CN203546148U (en) * | 2013-10-18 | 2014-04-16 | 湖南湘投金天钛金属有限公司 | On-line temperature control system for acid-pickling solution |
| CN208332662U (en) * | 2018-03-20 | 2019-01-04 | 北京中力创业机电设备有限公司 | Preheating type hot water boiler |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117481511A (en) * | 2023-08-03 | 2024-02-02 | 江门市美兹智能科技有限公司 | Multifunctional high-efficiency coffee machine |
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Application publication date: 20200417 |