CN113623630A - Boiler steam closed circulation system - Google Patents
Boiler steam closed circulation system Download PDFInfo
- Publication number
- CN113623630A CN113623630A CN202110723330.3A CN202110723330A CN113623630A CN 113623630 A CN113623630 A CN 113623630A CN 202110723330 A CN202110723330 A CN 202110723330A CN 113623630 A CN113623630 A CN 113623630A
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- Prior art keywords
- water
- boiler
- water storage
- storage tank
- pipeline
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B33/00—Steam-generation plants, e.g. comprising steam boilers of different types in mutual association
- F22B33/18—Combinations of steam boilers with other 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
- F22B37/26—Steam-separating arrangements
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- 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
- F22D11/02—Arrangements of feed-water pumps
- F22D11/06—Arrangements of feed-water pumps for returning condensate to boiler
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Water Supply & Treatment (AREA)
- Steam Or Hot-Water Central Heating Systems (AREA)
Abstract
The invention discloses a boiler water vapor closed circulation system, which comprises a boiler, wherein the boiler is provided with a steam outlet and a water inlet, the steam outlet is positioned at the top of the boiler, the steam outlet and the water inlet form a closed loop through a pipeline, and a heat equipment and a pump cavitation erosion prevention device are sequentially arranged on the pipeline from the steam outlet to the water inlet; the invention changes the heat exchange mode of the traditional boiler, the heat utilization equipment and the boiler form a closed circulation loop, the working procedures are reduced, the condensed and refluxed water after heat exchange enters the boiler again for reciprocating heating, the water loss is avoided, and the heat loss is reduced by the closed loop.
Description
Technical Field
The invention relates to the field of water vapor circulation, in particular to a boiler water vapor closed circulation system.
Background
The existing system for performing heat exchange by using boiler water vapor has low heat utilization rate and large water resource waste, so a new boiler water vapor system is needed to be designed for heat exchange.
Disclosure of Invention
In order to solve the problems, the invention provides a boiler water vapor closed circulating system which has the advantages that water vapor after heat exchange is collected by using a closed loop, and water dispersion and heat loss are prevented.
The technical scheme of the invention is as follows:
a closed circulation system for water vapor of a boiler comprises the boiler, wherein the boiler is provided with a steam outlet and a water inlet, the steam outlet is positioned at the top of the boiler, the steam outlet and the water inlet form a closed loop through a pipeline, and a heat device and a pump cavitation prevention device are sequentially arranged on the pipeline from the steam outlet to the water inlet.
The working principle of the technical scheme is as follows:
the boiler heats water to 190-203 ℃, the water vapor passes through heat utilization equipment from a pipeline, the temperature is always and spontaneously transferred from a high-temperature object to a low-temperature object according to a second law of thermodynamics, namely the water vapor of the heat utilization equipment finishes heat exchange, the water vapor with the reduced temperature is condensed and reflows, and enters the boiler again for cyclic heating to generate steam after passing through the pump cavitation prevention device.
The invention changes the heat exchange mode of the traditional boiler, the heat utilization equipment and the boiler form a closed circulation loop, the working procedures are reduced, the condensed and refluxed water after heat exchange enters the boiler again for reciprocating heating, the water loss is avoided to the maximum extent, and the heat loss is reduced by the closed loop.
In a further technical scheme, prevent pump cavitation erosion device includes two water storage tanks, one of them the water storage tank passes through the pipeline and is connected with steam outlet, another the water storage tank passes through the pipeline and is connected with the water inlet, two the pipeline intercommunication is passed through to the bottom of water storage tank, and one of them water storage tank is close to one side at top and is equipped with the outlet duct, another water storage tank is passed and extends to its bottom to the one end of outlet duct.
The water vapor after heat exchange by the heat equipment is condensed and flows back to liquid, and the other part of the water vapor still exists in a mode of overheating, namely the water enters the water storage tanks in a gas state and a liquid state, the bottoms of the two water storage tanks are communicated to form a communicating vessel, so that the water levels in the two water storage tanks are ensured to be the same, the liquid water enters the water storage tanks and then is stored in the water storage tanks, and the gas water enters the bottom of the other water storage tank through the gas outlet pipe to be condensed and flows back; through two water storage tanks and the outlet duct, gaseous and liquid water is separated out, prevents simultaneously that vapor from directly getting into the pump and producing cavitation in the pump.
In a further technical scheme, the top of the water storage tank is provided with an air release port.
Set up the gas release mouth, be convenient for emit the gas in the water storage tank, avoid inside atmospheric pressure too high to cause the potential safety hazard.
In a further technical scheme, the pipeline connection position of the water storage tank connected with the steam outlet is positioned on one side of the water storage tank close to the top, and the pipeline connection position of the water storage tank connected with the water inlet is positioned on one side of the water storage tank close to the bottom.
A pipe connection sets up in one side that the water storage tank is close to the top, makes things convenient for liquid water to separate through action of gravity and gaseous water, and another pipe connection sets up in one side that the water storage tank is close to the bottom, forms water pressure and makes liquid hydroenergy flow out from the water storage tank better.
In a further technical scheme, flow regulating valves are respectively arranged at the joints of the pipelines and the two water storage tanks.
The flow regulating valve is arranged, so that the water outlet quantity and the water inlet quantity of the water storage tank can be conveniently controlled.
In a further technical scheme, the volumes of the two water storage tanks are equal.
The volumes of the two water storage tanks are equal, so that the water levels in the two water storage tanks are consistent.
In a further technical scheme, the pipeline and the boiler are respectively provided with a water pump.
Through setting up the water pump, the water pump provides kinetic energy for the hydrologic cycle.
In a further technical scheme, a pressure relief valve is arranged on the pipeline.
The pressure relief valve is arranged on the pipeline, so that the pressure relief valve can be opened to relieve the pressure of the pipeline, and safety accidents caused by overhigh pressure in the pipeline are prevented.
In a further technical scheme, the system further comprises a controller, a liquid level sensor is arranged in the water storage tank, a signal output end of the liquid level sensor is connected with a signal input end of the controller, and a signal output end of the controller is connected with a signal input end of the water pump.
The lowest water level is set in the water storage tank, and when the water level in the water storage tank is reduced to the lowest water level, the controller controls the water pump to stop working, so that a part of reserved water level in the water storage tank is guaranteed all the time.
The invention has the beneficial effects that:
1. the invention changes the heat exchange mode of the traditional boiler, the heat utilization equipment and the boiler form a closed circulation loop, the working procedures are reduced, the condensed and refluxed water after heat exchange enters the boiler again for reciprocating heating, the water loss is avoided to the maximum extent, and the heat loss is reduced by the closed loop;
2. the gas-state water and the liquid-state water are separated through the two water storage tanks and the air outlet pipe, and meanwhile, the water vapor is prevented from directly entering the pump to generate cavitation erosion on the pump;
3. the air release port is arranged, so that air in the water storage tank can be conveniently released, and potential safety hazards caused by overhigh internal air pressure are avoided;
4. one pipeline joint is arranged on one side of the water storage tank close to the top, so that liquid water can be conveniently separated from gaseous water under the action of gravity, and the other pipeline joint is arranged on one side of the water storage tank close to the bottom, so that water pressure is formed, and liquid water can better flow out of the water storage tank;
5. the flow regulating valve is arranged, so that the water outlet quantity and the water inlet quantity of the water storage tank can be conveniently controlled;
6. the volumes of the two water storage tanks are equal, so that the water levels in the two water storage tanks are consistent;
7. the water pump is arranged to provide kinetic energy for water circulation;
8. the pressure relief valve is arranged on the pipeline, so that the pressure relief valve can be opened to relieve the pressure of the pipeline, and safety accidents caused by overhigh pressure in the pipeline are prevented;
9. the lowest water level is set in the water storage tank, and when the water level in the water storage tank is reduced to the lowest water level, the controller controls the water pump to stop working, so that a part of reserved water level in the water storage tank is guaranteed all the time.
Drawings
FIG. 1 is a schematic diagram of the overall structure of a closed water vapor circulation system of a boiler according to an embodiment of the present invention.
Description of reference numerals:
10. a boiler; 101. a steam outlet; 102. a water inlet; 11. a pipeline; 12. a heat-using device; 13. a water pump; 14. a pressure relief valve; 15. a flow regulating valve; 20. a water storage tank; 21. a pipeline; 22. an air outlet pipe; 23. and (4) an air release port.
Detailed Description
The embodiments of the present invention will be further described with reference to the accompanying drawings.
Example (b):
as shown in fig. 1, a closed water vapor circulation system of a boiler 10 includes a boiler 10, the boiler 10 is a sealed structure, the boiler 10 has a steam outlet 101 and a water inlet 102, the steam outlet 101 is located at the top of the boiler 10, the water inlet 102 is located at the top of the side wall of the boiler 10, the steam outlet 101 and the water inlet 102 form a closed loop through a pipeline 11, and a heat utilization device 12 and a pump cavitation erosion prevention device are sequentially arranged on the pipeline 11 from the steam outlet 101 to the water inlet 102, wherein the heat utilization device 12 of the present embodiment exchanges heat with the heat utilization device 12 in an indirect heat exchange manner, that is, a manner of utilizing latent heat of vaporization of water vapor and sensible heat of high-temperature condensed water.
The working principle of the technical scheme is as follows:
according to the requirements of the process and the equipment, the boiler 10 generates steam, taking a boiler of 1.25Mpa as an example, the temperature of the steam is 130-203 ℃, the steam passes through the heat utilization equipment 12 from the pipeline 11, the temperature is always and spontaneously transferred from a high-temperature object to a low-temperature object according to the second law of thermodynamics, namely, the steam of the heat utilization equipment 12 finishes heat exchange, the steam with the reduced temperature is condensed and reflows, passes through the pump cavitation prevention device and then enters the boiler 10 again for circulation and heating to generate the steam.
In this embodiment, through above-mentioned technical scheme, changed the mode of traditional boiler 10 heat exchange, will form inclosed circulation circuit with boiler 10 with hot equipment 12, reduced the process, the water of condensation backward flow after the heat exchange gets into boiler 10 reciprocating heating once more, and furthest has avoided the moisture to scatter and disappear, and through the mode of airtight return circuit, has reduced the heat and has scattered and disappear.
In another embodiment, as shown in fig. 1, the pump cavitation prevention device includes two water storage tanks 20, the two water storage tanks 20 are vertically placed on the ground, one of the water storage tanks 20 is connected with a steam outlet 101 through a pipeline 11, the other water storage tank 20 is connected with a water inlet 102 through a pipeline 11, the bottoms of the two water storage tanks 20 are communicated through a pipeline 21, the pipeline 21 is horizontally parallel to the ground, an air outlet pipe 22 is arranged on one side of one of the water storage tanks 20 close to the top, the air outlet pipe 22 is in an "L" shape, one end of the air outlet pipe 22 passes through the other water storage tank 20 and extends to the bottom thereof, and a gap is left between the end of the air outlet pipe 22 and the bottom of the water storage tank 20 to ensure that the condensed and refluxed water can flow into the bottom of the water storage tank 20.
In this embodiment, a part of the vapor after heat exchange by the heat utilization device 12 is condensed and returned to liquid, and the other part of the vapor still exists due to overheating, that is, the water enters the water storage tanks 20 in a gas state and a liquid state, and the bottoms of the two water storage tanks 20 are communicated to form a communicating vessel, so as to ensure that the water levels in the two water storage tanks 20 are the same, the liquid water enters the water storage tanks 20 and then is stored in the water storage tanks 20, and the gas water enters the bottom of the other water storage tank 20 through the gas outlet pipe 22 to be condensed and returned; through the two water storage tanks 20 and the air outlet pipe 22, water in gas and liquid states is separated, and meanwhile, water vapor is prevented from directly entering the pump to generate cavitation erosion on the pump.
In another embodiment, as shown in fig. 1, an air release opening 23 is formed in the top of one of the water storage tanks 20, the bottoms of the side walls of the two water storage tanks 20 are communicated to form a communicating vessel, and the air release opening 23 is formed in one bottom to release the pressure of the two water storage tanks 20.
In this embodiment, set up the gas release mouth 23, be convenient for emit the gas in the water storage tank 20, avoid inside atmospheric pressure too high to cause the potential safety hazard.
In another embodiment, as shown in fig. 1, the pipe 11 of the water storage tank 20 connected to the steam outlet 101 is located at the top side of the water storage tank 20, and the pipe 11 of the water storage tank 20 connected to the water inlet 102 is located at the bottom side of the water storage tank 20.
In this embodiment, a pipeline 11 junction sets up in one side that water storage tank 20 is close to the top, makes things convenient for liquid water to separate with gaseous water through the action of gravity, and another pipeline 11 junction sets up in one side that water storage tank 20 is close to the bottom, forms water pressure and makes liquid hydroenergy flow out from water storage tank 20 better.
In another embodiment, as shown in fig. 1, the connection between the pipeline 11 and the two water storage tanks 20 is provided with a flow control valve 15.
In this embodiment, the flow control valve 15 is provided to facilitate control of the water output and water input of the water storage tank 20.
In another embodiment, as shown in fig. 1, the volumes of the two water storage tanks 20 are equal.
In this embodiment, the volumes of the two water storage tanks 20 are equal to each other, so that the water levels in the two water storage tanks 20 are consistent.
In another embodiment, as shown in fig. 1, a water pump 13 is further disposed on the pipeline 11.
In this embodiment, by providing the water pump 13, the water pump 13 provides kinetic energy for water circulation.
In another embodiment, as shown in fig. 1, a pressure relief valve 14 is provided on the pipeline 11.
In this embodiment, a pressure relief valve 14 is arranged on the pipeline 11, so that the pressure relief valve 14 can be opened to relieve the pressure in the pipeline 11, and safety accidents caused by overhigh pressure in the pipeline 11 are prevented.
In another embodiment, the system further comprises a controller (not shown), a liquid level sensor (not shown) is arranged in the water storage tank 20, a signal output end of the liquid level sensor is connected with a signal input end of the controller, and a signal output end of the controller is connected with a signal input end of the water pump 13; the control program referred to in the present invention can be implemented by those skilled in the art according to the same principle of the existing program, and this part is not the innovation point of the present invention.
In this embodiment, set up minimum water level in the water storage tank 20, when the water level in the water storage tank 20 falls to minimum water level, the controller control water pump stop work guarantees to have partly reserved water level in the water storage tank 20 all the time.
The above-mentioned embodiments only express the specific embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention.
Claims (9)
1. The closed water vapor circulation system of the boiler is characterized by comprising the boiler, wherein the boiler is provided with a steam outlet and a water inlet, the steam outlet is positioned at the top of the boiler, the steam outlet and the water inlet form a closed loop through a pipeline, and a heat device and a pump cavitation prevention device are sequentially arranged on the pipeline from the steam outlet to the water inlet.
2. The closed circulation system of boiler water vapor according to claim 1, wherein the anti-pump cavitation device comprises two water storage tanks, one of the water storage tanks is connected with the vapor outlet through a pipeline, the other water storage tank is connected with the water inlet through a pipeline, the bottoms of the two water storage tanks are communicated through a pipeline, one side of one water storage tank close to the top is provided with an air outlet pipe, and one end of the air outlet pipe penetrates through the other water storage tank and extends to the bottom of the other water storage tank.
3. The closed circulation system for boiler water vapor as claimed in claim 1, wherein the top of the water storage tank is provided with a vent.
4. The closed circulation system for boiler water vapor as claimed in claim 2, wherein the pipe connection of the water storage tank connected with the vapor outlet is located at the side of the water storage tank near the top, and the pipe connection of the water storage tank connected with the water inlet is located at the side of the water storage tank near the bottom.
5. The closed circulating system of boiler water vapor according to claim 3, wherein the joints of the pipeline and the two water storage tanks are respectively provided with a flow regulating valve.
6. The closed circulation system for boiler water vapor as claimed in claim 2, wherein the volumes of the two water storage tanks are equal.
7. The closed circulation system for water vapor in a boiler as claimed in claim 2, wherein the pipeline and the boiler are respectively provided with a water pump.
8. The closed circulation system for water vapor in a boiler as claimed in claim 1, wherein a pressure relief valve is arranged on the pipeline.
9. The closed water vapor circulation system of a boiler as claimed in claim 7, further comprising a controller, wherein a liquid level sensor is arranged in the water storage tank, a signal output end of the liquid level sensor is connected with a signal input end of the controller, and a signal output end of the controller is connected with a signal input end of the water pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110723330.3A CN113623630B (en) | 2021-06-28 | 2021-06-28 | Boiler steam airtight circulation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110723330.3A CN113623630B (en) | 2021-06-28 | 2021-06-28 | Boiler steam airtight circulation system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113623630A true CN113623630A (en) | 2021-11-09 |
| CN113623630B CN113623630B (en) | 2023-07-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110723330.3A Active CN113623630B (en) | 2021-06-28 | 2021-06-28 | Boiler steam airtight circulation system |
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| CN (1) | CN113623630B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118089006A (en) * | 2024-04-19 | 2024-05-28 | 黑龙江省禄铭采暖设备有限责任公司 | Double-circulation hydrodynamic system for inside of electric drive boiler |
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2021
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| CN101196292A (en) * | 2007-12-19 | 2008-06-11 | 徐文忠 | Continuous full-automatic enclosed recovery system for high temperature condensate water |
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| CN118089006A (en) * | 2024-04-19 | 2024-05-28 | 黑龙江省禄铭采暖设备有限责任公司 | Double-circulation hydrodynamic system for inside of electric drive boiler |
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| Publication number | Publication date |
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| CN113623630B (en) | 2023-07-07 |
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