CN113464922A - High-level expansion tank with breather valve for electrode boiler - Google Patents
High-level expansion tank with breather valve for electrode boiler Download PDFInfo
- Publication number
- CN113464922A CN113464922A CN202110789885.8A CN202110789885A CN113464922A CN 113464922 A CN113464922 A CN 113464922A CN 202110789885 A CN202110789885 A CN 202110789885A CN 113464922 A CN113464922 A CN 113464922A
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- CN
- China
- Prior art keywords
- expansion tank
- breather valve
- limiting plate
- electrode boiler
- layer component
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- 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.)
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Classifications
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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
- F22B37/42—Applications, arrangements or dispositions of alarm or automatic safety devices
- F22B37/44—Applications, arrangements or dispositions of alarm or automatic safety devices of safety valves
- F22B37/446—Safety devices responsive to overpressure
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
- F24H9/20—Arrangement or mounting of control or safety devices
- F24H9/2007—Arrangement or mounting of control or safety devices for water heaters
- F24H9/2014—Arrangement or mounting of control or safety devices for water heaters using electrical energy supply
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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)
- Self-Closing Valves And Venting Or Aerating Valves (AREA)
Abstract
The invention discloses a high-level expansion tank with a breather valve for an electrode boiler, which comprises an expansion tank with a water inlet pipe at the lower end and an air vent at the upper end. A limiting plate is installed at the upper end of the expansion tank, and an alarm switch is installed on the limiting plate. An overflow water pipe positioned below the limiting plate is arranged on the side wall of the expansion tank; a breather valve is arranged in the expansion tank and used for isolating medium water in the expansion tank from outside air; the breather valve includes an upper member and a lower member with a hollow cavity in the form of a sealed cavity therebetween. And the outer side walls of the upper layer component and the lower layer component are respectively provided with a sealing ring. On the premise of meeting the communication between the expansion tank of the electrode boiler system and the atmosphere, the contact between oxygen and the medium water of the electrode boiler is isolated, and the problems of oxidation corrosion of the electrode boiler and increase of the conductivity of the medium water are avoided.
Description
Technical Field
The invention relates to a high-level expansion tank applied to a high-voltage electrode boiler system.
Background
The existing high-voltage electrode boiler systems are generally divided into pressure-bearing and normal-pressure boiler systems. The pressure-bearing electrode boiler has the explosion risk of water vaporization, and the production and installation process needs the supervision and inspection of boiler safety departments, and the related departments need to be reported for inspection every year. The normal pressure electrode boiler does not bear the system pressure, is safe, and does not need to be frequently subjected to supervision and inspection by related departments, so the normal pressure electrode boiler is preferably selected under the condition of allowable process conditions.
According to the national standard requirement, the normal pressure electrode boiler system needs to be directly communicated with the atmosphere, so an open type high-level expansion water tank is usually installed. However, the open high-level expansion water tank is directly communicated with the atmosphere, oxygen can enter the electrode boiler medium water system, so that the electrode boiler is oxidized and corroded, the service life of the electrode boiler is shortened, the conductivity of the electrode boiler medium water is increased, and the operation stability of the electrode boiler is influenced.
Disclosure of Invention
The invention aims to solve the technical problem of providing a high-position expansion tank with a breather valve for an electrode boiler, which is used for isolating oxygen from contacting with medium water of the electrode boiler on the premise of communicating the expansion tank of an electrode boiler system with the atmosphere, and avoiding the problems of oxidation corrosion of the electrode boiler and increase of the conductivity of the medium water.
The technical scheme of the invention is as follows:
the utility model provides a high-order expansion tank for electrode boiler and have breather valve, has the expansion tank that advances atmospheric including the lower extreme and go to the upper end, its characterized in that: a limiting plate is mounted at the upper end of the expansion tank, and an alarm switch is mounted on the limiting plate; an overflow water pipe positioned below the limiting plate is also arranged on the side wall of the expansion tank; a breather valve is arranged in the expansion tank and used for isolating medium water in the expansion tank from outside air; the breather valve comprises an upper layer member and a lower layer member, wherein a hollow cavity in the form of a sealed cavity is arranged between the upper layer member and the lower layer member; and the outer side walls of the upper layer component and the lower layer component are respectively provided with a sealing ring.
Preferably, the limiting plate is a carbon steel limiting plate, and the upper side of the breather valve is fixedly provided with a magnet.
Preferably, the height of the breather valve is not more than the height difference between the lower edge of the limiting plate and the upper edge of the overflow water pipe, so that the overflow water pipe can overflow when the breather valve leans against the limiting plate.
Preferably, the density of the breather valve is 0.8-1.0 times that of water.
The invention has the positive effects that: when the electrode boiler normally works, the breather valve floats up and down along with the liquid level in the expansion tank, and the air is isolated from the contact with the medium water through the sealing ring. When the electrode boiler works abnormally, the pressure of the medium water fluctuates to push the breather valve to exceed the overflow water pipe and contact the alarm switch, and the alarm switch is conducted to send out an electric signal for alarm. And simultaneously the medium water flows out from the overflow water pipe. On the premise of meeting the requirement that an expansion tank of an electrode boiler system is communicated with the atmosphere, the breather valve isolates oxygen from contacting with the medium water of the electrode boiler, and avoids oxidation corrosion of the electrode boiler and increase of the conductivity of the medium water. And the working safety of the electrode boiler system and the expansion tank is ensured.
The breather valve is provided with a hollow cavity, and the structural design can ensure that the breather valve has enough height to install at least two sealing rings.
In the optimized technical scheme, the limiting plate is a carbon steel limiting plate, and a magnet is fixedly installed on the upper side of the breather valve. When the electrode boiler works abnormally, the magnet attracts the carbon steel limiting plate, the fixed breather valve does not descend any more, and simultaneously the medium water flows out of the overflow water pipe. The safety and the reliability of the system are further improved.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
Fig. 2 is a schematic structural diagram of a breather valve in an embodiment of the invention.
In the figure, 1: expansion tank, 1-1: inlet tube, 1-2: overflow water pipe, 1-3: limiting plate, 2: breather valve, 2-1: upper layer member, 2-1: lower layer member, 2-3: sealing ring, 2-4: magnet, 2-5: hollow cavity, 3: and an alarm switch.
Detailed Description
The invention is further illustrated by the following examples and figures.
Referring to fig. 1, the embodiment of the invention comprises an expansion tank 1 with a water inlet pipe 1-1 at the lower end, wherein the tank body of the expansion tank 1 is generally a 304 stainless steel cylindrical shell, and an elliptical seal head at the lower part is provided with the water inlet pipe 1-1. The upper end of the expansion tank 1 is communicated with the atmosphere and fixedly provided with limiting plates 1-3. And the limiting plates 1-3 are provided with an alarm switch 3. And overflow water pipes 1-2 positioned below the limiting plates 1-3 are also arranged on the side wall of the expansion tank 1.
The expansion tank 1 is internally provided with a breather valve 2 for isolating medium water in the expansion tank from outside air. As shown in figure 2, the breather valve 2 comprises an upper layer member 2-1 and a lower layer member 2-2, wherein a hollow cavity 2-5 is arranged between the upper layer member 2-1 and the lower layer member 2-2, and the hollow cavity 2-5 is a sealed cavity. The outer side walls of the upper layer member 2-1 and the lower layer member 2-2 are respectively provided with annular grooves and sealing rings 2-3 are installed in the annular grooves.
The height of the breather valve 2 is not more than the height difference between the lower edge of the limiting plate 1-3 and the upper edge of the overflow water pipe 1-2, so that the overflow water pipe 1-2 can overflow when the breather valve 2 leans against the limiting plate 1-3.
The breather valve 2 is generally made into a short cylinder by engineering plastics, the outer surface of the breather valve is provided with two rubber sealing rings, the breather valve is hollow, and the integral specific gravity of the breather valve 2 is equivalent to that of water, preferably 0.8-1.0 time of that of the water.
Because the whole specific gravity of the breather valve 2 is equal to that of water, the breather valve 2 floats up and down along with the liquid level in the expansion tank 1 when the electrode boiler works normally, and the air is isolated from contacting with the medium water through the sealing ring 2-3. When the electrode boiler works abnormally, the pressure of the medium water fluctuates to push the breather valve 2 to exceed the overflow water pipe 1-2 and to be in contact with the alarm switch 3, and the alarm switch 3 is conducted to send out an electric signal alarm. Simultaneously, medium water flows out from the overflow water pipe 1-2.
Furthermore, the limiting plates 1-3 are carbon steel limiting plates, the upper side of the breather valve 2 is fixedly provided with magnets 2-4, and the magnets 2-4 are generally permanent magnets. When the electrode boiler works abnormally, the pressure of the medium water fluctuates, when the breather valve 2 is pushed to exceed the overflow water pipe 1-2, the breather valve 2 is contacted with the alarm switch 3, the alarm switch 3 is conducted to send out an electric signal alarm, the magnet 2-4 attracts the carbon steel limiting plate, the fixed breather valve 2 does not descend any more, and the medium water flows out of the overflow water pipe 1-2.
Claims (4)
1. A high-order expansion tank for electrode boiler and with breather valve, includes that the lower extreme has inlet tube (1-1) and the upper end leads to atmospheric expansion tank (1), its characterized in that: a limiting plate (1-3) is mounted at the upper end of the expansion tank (1), and an alarm switch (3) is mounted on the limiting plate (1-3); an overflow water pipe (1-2) positioned below the limiting plate (1-3) is also arranged on the side wall of the expansion tank (1); a breather valve (2) is arranged in the expansion tank (1) and is used for isolating medium water in the expansion tank from outside air; the breather valve (2) comprises an upper layer component (2-1) and a lower layer component (2-2), and a hollow cavity (2-5) in the form of a sealed cavity is arranged between the upper layer component (2-1) and the lower layer component (2-2); the outer side walls of the upper layer component (2-1) and the lower layer component (2-2) are respectively provided with a sealing ring (2-3).
2. The high-level expansion tank with a breather valve for an electrode boiler according to claim 1, wherein: the limiting plate (1-3) is a carbon steel limiting plate, and the upper side of the breather valve (2) is fixedly provided with a magnet (2-4).
3. The high-level expansion tank with a breather valve for an electrode boiler according to claim 1 or 2, wherein: breathing
The height of the valve (2) is not more than the height difference between the lower edge of the limiting plate (1-3) and the upper edge of the overflow water pipe (1-2), so that the overflow water pipe (1-2) can overflow when the breather valve (2) leans against the limiting plate (1-3).
4. The high-level expansion tank with a breather valve for an electrode boiler according to claim 1 or 2, wherein: breathing
The density of the valve (2) is 0.8-1.0 times of that of water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110789885.8A CN113464922A (en) | 2021-07-13 | 2021-07-13 | High-level expansion tank with breather valve for electrode boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110789885.8A CN113464922A (en) | 2021-07-13 | 2021-07-13 | High-level expansion tank with breather valve for electrode boiler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113464922A true CN113464922A (en) | 2021-10-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110789885.8A Pending CN113464922A (en) | 2021-07-13 | 2021-07-13 | High-level expansion tank with breather valve for electrode boiler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113464922A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114857766A (en) * | 2022-05-11 | 2022-08-05 | 福建工程学院 | A volumetric pressure expansion tank |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201513614U (en) * | 2009-08-27 | 2010-06-23 | 俞国良 | Respiration valve used for chemical engineering storage tank |
| CN201875962U (en) * | 2010-01-19 | 2011-06-22 | 廊坊创意博能源有限公司 | Expansion tank |
| CN104676860A (en) * | 2013-12-03 | 2015-06-03 | 黑龙江融德建筑技术开发有限公司 | Expansion tank design |
| CN204399840U (en) * | 2015-01-05 | 2015-06-17 | 冀州市安全防爆器材有限责任公司 | Water tank enclosed oxygen isolation device |
| CN206338961U (en) * | 2016-12-28 | 2017-07-18 | 吉林省建筑科学研究设计院（吉林省建筑工程质量检测中心） | A kind of solar thermal collector efficiently, safe |
| CN207279001U (en) * | 2017-08-07 | 2018-04-27 | 宁波盾科新材料有限公司 | A kind of expansion gear with voltage stabilizing function |
| CN207350813U (en) * | 2017-10-26 | 2018-05-11 | 无锡佳豪手套有限公司 | A kind of expansion drum for boiler plant |
| CN209387223U (en) * | 2019-03-27 | 2019-09-13 | 泰安市泰晶电子科技有限公司 | A kind of breathing valve test device |
-
2021
- 2021-07-13 CN CN202110789885.8A patent/CN113464922A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201513614U (en) * | 2009-08-27 | 2010-06-23 | 俞国良 | Respiration valve used for chemical engineering storage tank |
| CN201875962U (en) * | 2010-01-19 | 2011-06-22 | 廊坊创意博能源有限公司 | Expansion tank |
| CN104676860A (en) * | 2013-12-03 | 2015-06-03 | 黑龙江融德建筑技术开发有限公司 | Expansion tank design |
| CN204399840U (en) * | 2015-01-05 | 2015-06-17 | 冀州市安全防爆器材有限责任公司 | Water tank enclosed oxygen isolation device |
| CN206338961U (en) * | 2016-12-28 | 2017-07-18 | 吉林省建筑科学研究设计院（吉林省建筑工程质量检测中心） | A kind of solar thermal collector efficiently, safe |
| CN207279001U (en) * | 2017-08-07 | 2018-04-27 | 宁波盾科新材料有限公司 | A kind of expansion gear with voltage stabilizing function |
| CN207350813U (en) * | 2017-10-26 | 2018-05-11 | 无锡佳豪手套有限公司 | A kind of expansion drum for boiler plant |
| CN209387223U (en) * | 2019-03-27 | 2019-09-13 | 泰安市泰晶电子科技有限公司 | A kind of breathing valve test device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114857766A (en) * | 2022-05-11 | 2022-08-05 | 福建工程学院 | A volumetric pressure expansion tank |
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Application publication date: 20211001 |
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