WO2017020573A1 - Heat storage unit with safety device for solar water heater - Google Patents
Heat storage unit with safety device for solar water heater Download PDFInfo
- Publication number
- WO2017020573A1 WO2017020573A1 PCT/CN2016/073903 CN2016073903W WO2017020573A1 WO 2017020573 A1 WO2017020573 A1 WO 2017020573A1 CN 2016073903 W CN2016073903 W CN 2016073903W WO 2017020573 A1 WO2017020573 A1 WO 2017020573A1
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- WIPO (PCT)
- Prior art keywords
- heat storage
- storage element
- pressure relief
- storage unit
- water heater
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S60/00—Arrangements for storing heat collected by solar heat collectors
- F24S60/10—Arrangements for storing heat collected by solar heat collectors using latent heat
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S80/00—Details, accessories or component parts of solar heat collectors not provided for in groups F24S10/00-F24S70/00
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- 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
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/40—Solar thermal energy, e.g. solar towers
Definitions
- the utility model relates to the technical field of solar water heaters, in particular to a solar water heater heat storage unit with a safety device.
- Phase change heat storage solar water heaters use phase change heat storage materials to store solar energy. Due to the large heat storage density of phase change materials, this type of solar water heater does not need a hot water storage tank, is small in size, convenient to install, and fresh and hygienic. It is a new energy-saving and environmentally friendly product with great market prospects. Similar to traditional solar water heaters, such products also have problems of excessive temperature and pressure of heat storage medium caused by environment and use, especially when the house has not been delivered or is unoccupied for a long time, there is no source of tap water, and the water heater is in the air. Conditions, excessive pressure and temperature can easily lead to safety hazards.
- phase change heat storage solar water heaters use T/P valves, radiators or sunshades to control internal temperature or pressure.
- these measures can only control the temperature of the heat storage medium (phase change material) and the heat exchange medium (water), or can only control the pressure of the heat exchange medium, and cannot directly control the pressure of the heat storage medium (phase change material).
- the pressure in the sealed heat storage unit will inevitably rise gradually, which may cause damage to the container and leakage of the heat storage material, resulting in a decrease in heat storage performance of the device and a safety hazard.
- the purpose of the utility model is to provide a solar water heater heat storage unit with safety device which has the advantages of safety and reliability, small loss of heat storage medium, simple installation and the like in order to overcome the defects of the prior art mentioned above.
- a solar water heater heat storage unit with a safety device comprising a heat storage element and a pressure relief valve, wherein the heat storage element is provided with a phase change heat storage material, and the storage One end of the heat element is provided with a pressure relief hole, and the pressure relief valve is fixed at one end of the heat storage element and communicates with the inside of the heat storage element through the pressure relief hole.
- One end of the heat storage element is provided with a sealing flange, and the pressure releasing hole is disposed at an upper part of the sealing flange, And the opening of the pressure relief hole inside the sealing flange of the heat storage element is above the liquid level of the heat storage material when in use.
- the pressure relief hole is inclined at an upper portion of the sealing flange, and an inner opening of the pressure relief hole (ie, an opening near a side of the heat storage material) is located at a top end of the minimum outer diameter portion of the sealing flange.
- the pressure relief hole is perpendicular to the surface of the sealing flange.
- a shielding member is disposed in the heat storage element near the pressure relief hole.
- the medium discharged at this time is actually a gas-liquid mixture, especially when the material liquid surface is close to the inner opening of the pressure relief hole, and contains more heat storage material.
- the installation of the shielding member can play a certain role in gas-liquid separation and reduce the loss of the heat storage material. At the same time, this also prevents the discharged heat storage material from affecting the normal use of the safety valve.
- the shielding member is a notched metal piece having a diameter slightly smaller than the inner diameter of the heat storage element, mounted on one side of the sealing flange, and when installed, the notch faces downward and is immersed in the heat storage material.
- the shielding member is a U-shaped capillary copper tube welded to the inner opening of the pressure relief hole, and the top of the U-shaped capillary copper tube is adjacent to the inner wall of the top of the heat storage element, and the opening faces and is close to the inner surface of the sealing flange.
- the heat storage element (1) is provided with a heat exchange tube support piece with a vent hole. Processing the vent hole on the support sheet can make the gas flow in the heat storage element smooth, and the gas in the heat storage material rises above the liquid level in time. This facilitates the discharge of the safety valve as a primary pressure medium.
- the pressure relief valve is a pressure safety valve, and the opening pressure is not higher than the safe working pressure of the heat storage element, and is not lower than the saturated steam pressure when the phase change heat storage material is used.
- a method for installing a solar water heater heat storage unit with a safety device characterized in that a heat storage unit is horizontally or obliquely disposed in a solar heat collecting tube, and the pressure relief valve is opened upward and the inner side of the pressure relief hole is opened at the heat storage material Above the liquid level.
- the storage unit has an inclination angle of 0 to 90 degrees.
- the solar heat storage unit is provided with a safety device to prevent the internal pressure of the heat storage unit from exceeding the safe working pressure of the container, thereby ensuring long-term safe operation.
- the safety device only releases gas and a small amount of water vapor, which does not substantially cause loss of heat storage material.
- the heat storage unit has a simple structure, is convenient to install, and is easy to implement.
- Figure 1 is a schematic structural view of Embodiment 1 of the present invention.
- Figure 2 is a schematic structural view of Embodiment 2 of the present invention.
- FIG. 3 is a schematic structural view of a shielding member according to Embodiment 2 of the present invention.
- Figure 4 is a schematic structural view of Embodiment 3 of the present invention.
- the figures are: 1 heat storage component, 2 sealing flange, 3 through hole stud, 4 pressure relief valve, 5 solar collector tube, 6 heat exchange tube, 7 phase change heat storage material, 8 shielding parts, 9 pressure relief hole.
- the heat storage element 1 is a long cylindrical stainless steel container containing a certain amount of heat storage material 7 and a U-shaped heat exchange tube 6. One end of the cylindrical container is sealed with a flange 2.
- the flange 2 is in the shape of an end cap, and its maximum outer diameter is equal to the outer diameter of the heat storage element, and the minimum outer diameter is slightly smaller than the inner diameter of the heat storage element.
- the upper part of the outer surface of the flange 2 is provided with a slanted pressure relief hole, and the opening of the pressure relief hole inside the flange is located at the top end of the smallest outer diameter portion thereof.
- a through hole stud 3 is welded to the flange relief hole, and a pressure relief valve 4 is screwed thereon.
- the whole heat storage unit is inserted into the solar vacuum heat collecting tube 5, and the tail of the heat collecting tube is raised by 20 cm, and then placed in the sun to dry.
- the heat storage unit was exposed to air for 120 days without direct leakage of the heat storage material, but the weight loss was 35g, which proved that the internal pressure was mainly released in the form of exhaust gas.
- the relative weight loss of the heat storage material is less than 2%, and the heat storage capacity decreases little.
- the heat storage element 1 is a long cylindrical stainless steel container containing a certain amount of heat storage material 7 and a U-shaped heat exchange tube 6. One end of the cylindrical container is sealed with a flange 2.
- the flange 2 is in the shape of an end cap, and its maximum outer diameter is equal to the outer diameter of the heat storage element, and the minimum outer diameter is slightly smaller than the inner diameter of the heat storage element.
- the upper part of the outer surface of the flange is provided with a slanted pressure relief hole, and the opening of the pressure relief hole inside the flange is at the top end of the smallest outer diameter portion thereof.
- a metal sheet 8 having a notch is arranged near the flange 2.
- the diameter of the metal sheet 8 is slightly smaller than the inner diameter of the heat storage element, and has a gap with a certain width of the inner wall of the heat storage element, and the notch faces downward and is immersed in the heat storage material 7.
- Metal sheet 8 fixed On the U-shaped heat exchange tube 6.
- a through hole stud 3 is welded to the flange relief hole, and a pressure relief valve 4 is screwed thereon.
- the whole heat storage unit is inserted into the solar vacuum heat collecting tube 5, and the tail of the heat collecting tube is raised by 10 cm, and then placed in the sun to dry.
- the heat storage unit was exposed to air for 120 days without direct leakage of the heat storage material, but the weight loss was 24g, which proved that the internal pressure was mainly released in the form of exhaust gas.
- the relative weight loss of the heat storage material is less than 1%, and the heat storage capacity decreases little.
- the heat storage element 1 is a long cylindrical stainless steel container containing a certain amount of heat storage material 7 and a U-shaped heat exchange tube 6.
- One end of the cylindrical container is sealed with a flange 2.
- the flange 2 is in the shape of an end cap, and its maximum outer diameter is equal to the outer diameter of the heat storage element, and the minimum outer diameter is slightly smaller than the inner diameter of the heat storage element.
- the upper part of the outer surface of the flange opens a pressure relief hole perpendicular to the surface, and the pressure relief hole is welded with a U-shaped curved capillary copper tube 8 at the opening inside the flange, and the copper tube 8 is open to the inner wall of the top of the container, and the opening is facing and close The inner surface of the flange 2.
- a through hole stud 3 is welded to the flange relief hole, and a pressure relief valve 4 is screwed thereon.
- the whole heat storage unit is inserted into the solar vacuum heat collecting tube 5, and the tail of the heat collecting tube is raised by 7.5 cm, and then placed in the sun to dry.
- the heat storage unit was exposed to air for 120 days without direct leakage of the heat storage material, but the weight loss was 21 g, which proved that the internal pressure was mainly released in the form of exhaust gas.
- the relative weight loss of the heat storage material is less than 1%, and the heat storage capacity decreases little.
- the heat storage element (1) is provided with a heat exchange tube support piece with a vent hole. Processing the vent hole on the support sheet can make the gas flow in the heat storage element smooth, and the gas in the heat storage material rises above the liquid level in time. This facilitates the discharge of the safety valve as a primary pressure medium.
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- Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Heat-Pump Type And Storage Water Heaters (AREA)
Abstract
A heat storage unit with a safety device for a solar water heater comprises a heat storage element (1) and a pressure release valve (4). A phase-change heat storage material (7) is contained in the heat storage element (1). A pressure release hole (9) is provided at one end of the heat storage element (1). The pressure release valve (4) is fixed to one end of the heat storage element (1) and is communicated with the interior of the heat storage element (1) through the pressure release hole (9). The heat storage unit is horizontally or obliquely arranged in a solar heat collecting pipe (5), so that the pressure release valve (4) faces upwardly, and an opening at the inner side of the pressure release hole (9) is above the liquid surface height of the heat storage material (7). Internal pressure of the heat storage unit is controlled and operation safety is guaranteed by adding the pressure release valve (4) and using a simple and convenient installation method.
Description
本实用新型涉及一种太阳能热水器技术领域,尤其是涉及一种带安全装置的太阳能热水器储热单元。The utility model relates to the technical field of solar water heaters, in particular to a solar water heater heat storage unit with a safety device.
相变储热太阳能热水器采用相变储热材料储存太阳能。由于相变材料储热密度大,该类太阳能热水器无需储热水箱,体积小,安装方便,且出水新鲜卫生,是一种具有巨大市场前景的新型节能环保产品。与传统太阳能热水器类似,该类产品也存在由环境和使用所造成的储热介质温度、压力过高的问题,特别是在房屋尚未交付或长期无人居住时,没有自来水来源,热水器处于空晒条件,过高的压力和温度容易导致安全隐患。Phase change heat storage solar water heaters use phase change heat storage materials to store solar energy. Due to the large heat storage density of phase change materials, this type of solar water heater does not need a hot water storage tank, is small in size, convenient to install, and fresh and hygienic. It is a new energy-saving and environmentally friendly product with great market prospects. Similar to traditional solar water heaters, such products also have problems of excessive temperature and pressure of heat storage medium caused by environment and use, especially when the house has not been delivered or is unoccupied for a long time, there is no source of tap water, and the water heater is in the air. Conditions, excessive pressure and temperature can easily lead to safety hazards.
目前,相变储热太阳能热水器是通过T/P阀、散热器或遮阳帘来控制内部温度或压力的。然而,这些措施只能控制储热介质(相变材料)和换热介质(水)的温度,或只能控制换热介质的压力,并不能直接控制储热介质(相变材料)的压力。这样,在长期使用过程中,密闭的储热单元内的压力不可避免会逐渐升高,从而可能引起容器破损和储热材料泄漏,致使设备储热性能下降,并导致安全隐患。At present, phase change heat storage solar water heaters use T/P valves, radiators or sunshades to control internal temperature or pressure. However, these measures can only control the temperature of the heat storage medium (phase change material) and the heat exchange medium (water), or can only control the pressure of the heat exchange medium, and cannot directly control the pressure of the heat storage medium (phase change material). In this way, during long-term use, the pressure in the sealed heat storage unit will inevitably rise gradually, which may cause damage to the container and leakage of the heat storage material, resulting in a decrease in heat storage performance of the device and a safety hazard.
发明内容Summary of the invention
本实用新型的目的就是为了克服上述现有技术存在的缺陷而提供一种具有安全可靠、储热介质损失小、安装简便等优点的带安全装置的太阳能热水器储热单元。The purpose of the utility model is to provide a solar water heater heat storage unit with safety device which has the advantages of safety and reliability, small loss of heat storage medium, simple installation and the like in order to overcome the defects of the prior art mentioned above.
本实用新型的目的可以通过以下技术方案来实现:一种带安全装置的太阳能热水器储热单元,包括储热元件和泄压阀,所述的储热元件内装有相变储热材料,且储热元件一端设有泄压孔,所述泄压阀固定在储热元件一端并通过泄压孔与储热元件内部联通。The purpose of the utility model can be achieved by the following technical solutions: a solar water heater heat storage unit with a safety device, comprising a heat storage element and a pressure relief valve, wherein the heat storage element is provided with a phase change heat storage material, and the storage One end of the heat element is provided with a pressure relief hole, and the pressure relief valve is fixed at one end of the heat storage element and communicates with the inside of the heat storage element through the pressure relief hole.
所述的储热元件一端设有密封法兰,所述的泄压孔设置在密封法兰的上部,
且泄压孔在储热元件密封法兰内侧的开口位于使用时储热材料的液面高度以上。One end of the heat storage element is provided with a sealing flange, and the pressure releasing hole is disposed at an upper part of the sealing flange,
And the opening of the pressure relief hole inside the sealing flange of the heat storage element is above the liquid level of the heat storage material when in use.
作为优选的技术方案,所述的泄压孔倾斜开设在密封法兰上部,且泄压孔的内侧开口(即靠近储热材料一侧的开口)位于密封法兰最小外径部分的顶端。As a preferred technical solution, the pressure relief hole is inclined at an upper portion of the sealing flange, and an inner opening of the pressure relief hole (ie, an opening near a side of the heat storage material) is located at a top end of the minimum outer diameter portion of the sealing flange.
或者,所述的泄压孔垂直于密封法兰表面。Alternatively, the pressure relief hole is perpendicular to the surface of the sealing flange.
作为优选的技术方案,所述的储热元件内靠近泄压孔处设有遮挡件。在安全阀开启时,内部介质经过泄压孔排出。此时排出的介质实际上是气液混合物,特别是在材料液面距泄压孔内侧开口较近时,含有较多储热材料。加装遮挡件可以起到一定的气液分离的作用,减少储热材料损失。同时,这也可以避免排出的储热材料影响安全阀的正常使用。As a preferred technical solution, a shielding member is disposed in the heat storage element near the pressure relief hole. When the safety valve is opened, the internal medium is discharged through the pressure relief hole. The medium discharged at this time is actually a gas-liquid mixture, especially when the material liquid surface is close to the inner opening of the pressure relief hole, and contains more heat storage material. The installation of the shielding member can play a certain role in gas-liquid separation and reduce the loss of the heat storage material. At the same time, this also prevents the discharged heat storage material from affecting the normal use of the safety valve.
所述的遮挡件为一带缺口的金属片,其直径略小于储热元件内径,安装在密封法兰一侧,且安装时,缺口朝下并浸没在储热材料中。The shielding member is a notched metal piece having a diameter slightly smaller than the inner diameter of the heat storage element, mounted on one side of the sealing flange, and when installed, the notch faces downward and is immersed in the heat storage material.
或者,所述的遮挡件为一U形毛细铜管,焊接在泄压孔的内侧开口处,U形毛细铜管顶部贴近储热元件顶部内壁,其开口朝向并贴近密封法兰内表面。Alternatively, the shielding member is a U-shaped capillary copper tube welded to the inner opening of the pressure relief hole, and the top of the U-shaped capillary copper tube is adjacent to the inner wall of the top of the heat storage element, and the opening faces and is close to the inner surface of the sealing flange.
作为优选的技术方案,所述的储热元件(1)内装有带通气孔的换热管支撑片。在支撑片上加工通气孔,可以使储热元件内的气体流动通畅,并使储热材料中的气体及时上升到液面以上。这有利于气体作为主要压力介质排出安全阀。As a preferred technical solution, the heat storage element (1) is provided with a heat exchange tube support piece with a vent hole. Processing the vent hole on the support sheet can make the gas flow in the heat storage element smooth, and the gas in the heat storage material rises above the liquid level in time. This facilitates the discharge of the safety valve as a primary pressure medium.
所述的泄压阀为压力安全阀,其开启压力不高于储热元件的安全工作压力,且不低于相变储热材料使用时的饱和蒸汽压力。The pressure relief valve is a pressure safety valve, and the opening pressure is not higher than the safe working pressure of the heat storage element, and is not lower than the saturated steam pressure when the phase change heat storage material is used.
一种带安全装置的太阳能热水器储热单元的安装方法,其特征在于,将储热单元水平或倾斜设置于太阳能集热管中,使泄压阀朝上及泄压孔的内侧开口在储热材料的液面高度以上。A method for installing a solar water heater heat storage unit with a safety device, characterized in that a heat storage unit is horizontally or obliquely disposed in a solar heat collecting tube, and the pressure relief valve is opened upward and the inner side of the pressure relief hole is opened at the heat storage material Above the liquid level.
所述的储热单元的倾斜角度为0~90度。The storage unit has an inclination angle of 0 to 90 degrees.
与现有技术相比,本实用新型具有如下优点:Compared with the prior art, the utility model has the following advantages:
(1)该太阳能储热单元带有安全装置,可防止储热单元内部压力超过容器的安全工作压力,从而保证其长期安全运行。(1) The solar heat storage unit is provided with a safety device to prevent the internal pressure of the heat storage unit from exceeding the safe working pressure of the container, thereby ensuring long-term safe operation.
(2)该安全装置只释放气体和少量水蒸汽,基本不导致储热材料的损失。(2) The safety device only releases gas and a small amount of water vapor, which does not substantially cause loss of heat storage material.
(3)该储热单元结构简单,安装方便,安装要求易于实现。
(3) The heat storage unit has a simple structure, is convenient to install, and is easy to implement.
图1为本实用新型实施例1的结构示意图;Figure 1 is a schematic structural view of Embodiment 1 of the present invention;
图2为本实用新型实施例2的结构示意图;Figure 2 is a schematic structural view of Embodiment 2 of the present invention;
图3为本实用新型实施例2中遮挡件的结构示意图;3 is a schematic structural view of a shielding member according to Embodiment 2 of the present invention;
图4为本实用新型实施例3的结构示意图;Figure 4 is a schematic structural view of Embodiment 3 of the present invention;
图中标识为:1储热元件,2密封法兰,3通孔螺柱,4泄压阀,5太阳能集热管,6换热管,7相变储热材料,8遮挡件,9泄压孔。The figures are: 1 heat storage component, 2 sealing flange, 3 through hole stud, 4 pressure relief valve, 5 solar collector tube, 6 heat exchange tube, 7 phase change heat storage material, 8 shielding parts, 9 pressure relief hole.
下面对本实用新型的实施例作详细说明,本实施例在以本实用新型技术方案为前提下进行实施,给出了详细的实施方式和具体的操作过程,但本实用新型的保护范围不限于下述的实施例。The embodiments of the present invention are described in detail below. The present embodiment is implemented on the premise of the technical solution of the present invention, and the detailed implementation manner and the specific operation process are given, but the protection scope of the present invention is not limited to the following. The embodiments described.
实施例1Example 1
储热元件1为一长圆筒形不锈钢容器,内装一定量的储热材料7,并设有U型换热管6。圆筒形容器一端以法兰2密封。法兰2为端盖形状,其最大外径等于储热元件外径,最小外径略小于储热元件内径。法兰2外表面上部开有倾斜的泄压孔,泄压孔在法兰内部的开口位于其最小外径部分的顶端。法兰泄压孔处焊有一通孔螺柱3,其上以螺纹连接方式安装一泄压阀4。整根储热单元插入太阳能真空集热管5中,并将集热管尾部抬高20cm后置于阳光下空晒。此储热单元空晒120天无储热材料直接泄漏现象,但失重35g,证明内部压力主要以排出气体形式得到释放。储热材料相对失重小于2%,储热能力下降很少。The heat storage element 1 is a long cylindrical stainless steel container containing a certain amount of heat storage material 7 and a U-shaped heat exchange tube 6. One end of the cylindrical container is sealed with a flange 2. The flange 2 is in the shape of an end cap, and its maximum outer diameter is equal to the outer diameter of the heat storage element, and the minimum outer diameter is slightly smaller than the inner diameter of the heat storage element. The upper part of the outer surface of the flange 2 is provided with a slanted pressure relief hole, and the opening of the pressure relief hole inside the flange is located at the top end of the smallest outer diameter portion thereof. A through hole stud 3 is welded to the flange relief hole, and a pressure relief valve 4 is screwed thereon. The whole heat storage unit is inserted into the solar vacuum heat collecting tube 5, and the tail of the heat collecting tube is raised by 20 cm, and then placed in the sun to dry. The heat storage unit was exposed to air for 120 days without direct leakage of the heat storage material, but the weight loss was 35g, which proved that the internal pressure was mainly released in the form of exhaust gas. The relative weight loss of the heat storage material is less than 2%, and the heat storage capacity decreases little.
实施例2Example 2
储热元件1为一长圆筒形不锈钢容器,内装一定量的储热材料7,并设有U型换热管6。圆筒形容器一端以法兰2密封。法兰2为端盖形状,其最大外径等于储热元件外径,最小外径略小于储热元件内径。法兰外表面上部开有倾斜的泄压孔,泄压孔在法兰内部的开口位于其最小外径部分的顶端。靠近法兰2处装有一带缺口的金属片8,金属片8的直径略小于储热元件内径,与储热元件内壁有一定宽度的缝隙,其缺口朝下并浸没在储热材料7中。金属片8固定
在U型换热管6上。法兰泄压孔处焊有一通孔螺柱3,其上以螺纹连接方式安装一泄压阀4。将整根储热单元插入太阳能真空集热管5中,并将集热管尾部抬高10cm后置于阳光下空晒。此储热单元空晒120天无储热材料直接泄漏现象,但失重24g,证明内部压力主要以排出气体形式得到释放。储热材料相对失重小于1%,储热能力下降很少。The heat storage element 1 is a long cylindrical stainless steel container containing a certain amount of heat storage material 7 and a U-shaped heat exchange tube 6. One end of the cylindrical container is sealed with a flange 2. The flange 2 is in the shape of an end cap, and its maximum outer diameter is equal to the outer diameter of the heat storage element, and the minimum outer diameter is slightly smaller than the inner diameter of the heat storage element. The upper part of the outer surface of the flange is provided with a slanted pressure relief hole, and the opening of the pressure relief hole inside the flange is at the top end of the smallest outer diameter portion thereof. A metal sheet 8 having a notch is arranged near the flange 2. The diameter of the metal sheet 8 is slightly smaller than the inner diameter of the heat storage element, and has a gap with a certain width of the inner wall of the heat storage element, and the notch faces downward and is immersed in the heat storage material 7. Metal sheet 8 fixed
On the U-shaped heat exchange tube 6. A through hole stud 3 is welded to the flange relief hole, and a pressure relief valve 4 is screwed thereon. The whole heat storage unit is inserted into the solar vacuum heat collecting tube 5, and the tail of the heat collecting tube is raised by 10 cm, and then placed in the sun to dry. The heat storage unit was exposed to air for 120 days without direct leakage of the heat storage material, but the weight loss was 24g, which proved that the internal pressure was mainly released in the form of exhaust gas. The relative weight loss of the heat storage material is less than 1%, and the heat storage capacity decreases little.
实施例3Example 3
储热元件1为一长圆筒形不锈钢容器,内装一定量的储热材料7,并设有U型换热管6。圆筒形容器一端以法兰2密封。法兰2为端盖形状,其最大外径等于储热元件外径,最小外径略小于储热元件内径。法兰外表面上部开一垂直于表面的泄压孔,泄压孔在法兰内部的开口处焊有一U形的弯曲毛细铜管8,铜管8开口在贴近容器顶部内壁,开口朝向并贴近法兰2内表面。法兰泄压孔处焊有一通孔螺柱3,其上以螺纹连接方式安装一泄压阀4。将整根储热单元插入太阳能真空集热管5中,并将集热管尾部抬高7.5cm后置于阳光下空晒。此储热单元空晒120天无储热材料直接泄漏现象,但失重21g,证明内部压力主要以排出气体形式得到释放。储热材料相对失重小于1%,储热能力下降很少。The heat storage element 1 is a long cylindrical stainless steel container containing a certain amount of heat storage material 7 and a U-shaped heat exchange tube 6. One end of the cylindrical container is sealed with a flange 2. The flange 2 is in the shape of an end cap, and its maximum outer diameter is equal to the outer diameter of the heat storage element, and the minimum outer diameter is slightly smaller than the inner diameter of the heat storage element. The upper part of the outer surface of the flange opens a pressure relief hole perpendicular to the surface, and the pressure relief hole is welded with a U-shaped curved capillary copper tube 8 at the opening inside the flange, and the copper tube 8 is open to the inner wall of the top of the container, and the opening is facing and close The inner surface of the flange 2. A through hole stud 3 is welded to the flange relief hole, and a pressure relief valve 4 is screwed thereon. The whole heat storage unit is inserted into the solar vacuum heat collecting tube 5, and the tail of the heat collecting tube is raised by 7.5 cm, and then placed in the sun to dry. The heat storage unit was exposed to air for 120 days without direct leakage of the heat storage material, but the weight loss was 21 g, which proved that the internal pressure was mainly released in the form of exhaust gas. The relative weight loss of the heat storage material is less than 1%, and the heat storage capacity decreases little.
所述的储热元件(1)内装有带通气孔的换热管支撑片。在支撑片上加工通气孔,可以使储热元件内的气体流动通畅,并使储热材料中的气体及时上升到液面以上。这有利于气体作为主要压力介质排出安全阀。The heat storage element (1) is provided with a heat exchange tube support piece with a vent hole. Processing the vent hole on the support sheet can make the gas flow in the heat storage element smooth, and the gas in the heat storage material rises above the liquid level in time. This facilitates the discharge of the safety valve as a primary pressure medium.
以上仅是本实用新型的优选实施方式,应当指出,对于本技术领域的普通技术人员来说,在不脱离本实用新型原理的前提下,还可以做出若干改进和润饰,这些改进和润饰也应视为本实用新型的保护范围。
The above is only a preferred embodiment of the present invention, and it should be noted that those skilled in the art can also make several improvements and retouchings without departing from the principles of the present invention. It should be considered as the scope of protection of the present invention.
Claims (9)
- 一种带安全装置的太阳能热水器储热单元,其特征在于,包括储热元件(1)和泄压阀(4),所述的储热元件(1)内装有相变储热材料(7),且储热元件(1)一端设有泄压孔(9),所述泄压阀(4)固定在储热元件(1)一端并通过泄压孔(9)与储热元件(1)内部联通。A solar water heater heat storage unit with a safety device, comprising: a heat storage element (1) and a pressure relief valve (4), wherein the heat storage element (1) is provided with a phase change heat storage material (7) And one end of the heat storage element (1) is provided with a pressure relief hole (9), and the pressure relief valve (4) is fixed at one end of the heat storage element (1) and passes through the pressure relief hole (9) and the heat storage element (1) Internal communication.
- 根据权利要求1所述的带安全装置的太阳能热水器储热单元,其特征在于,所述的储热元件(1)一端设有密封法兰(2),所述的泄压孔(9)设置在密封法兰(2)的上部,且泄压孔(9)在储热元件密封法兰(2)内侧的开口位于使用时储热材料(7)的液面高度以上。The solar water heater heat storage unit with safety device according to claim 1, characterized in that: one end of the heat storage element (1) is provided with a sealing flange (2), and the pressure relief hole (9) is arranged At the upper part of the sealing flange (2), the opening of the pressure relief hole (9) inside the heat storage element sealing flange (2) is above the liquid level of the heat storage material (7) at the time of use.
- 根据权利要求2所述的带安全装置的太阳能热水器储热单元,其特征在于,所述的泄压孔(9)倾斜开设在密封法兰(2)上部,且泄压孔(9)的内侧开口位于密封法兰(2)最小外径部分的顶端。The solar water heater heat storage unit with safety device according to claim 2, wherein the pressure relief hole (9) is inclined at an upper portion of the sealing flange (2) and the inner side of the pressure relief hole (9) The opening is located at the top end of the smallest outer diameter portion of the sealing flange (2).
- 根据权利要求2所述的带安全装置的太阳能热水器储热单元,其特征在于,所述的泄压孔(9)垂直于密封法兰(2)表面。The solar water heater heat storage unit with safety device according to claim 2, characterized in that the pressure relief hole (9) is perpendicular to the surface of the sealing flange (2).
- 根据权利要求2所述的带安全装置的太阳能热水器储热单元,其特征在于,所述的储热元件(1)内靠近泄压孔(9)处设有遮挡件(8)。The solar water heater heat storage unit with safety device according to claim 2, characterized in that a shielding member (8) is arranged in the heat storage element (1) near the pressure relief hole (9).
- 根据权利要求5所述的带安全装置的太阳能热水器储热单元,其特征在于,所述的遮挡件(8)为一带缺口的金属片,其直径小于储热元件内径,安装在密封法兰(2)一侧,且安装时,缺口朝下并浸没在储热材料(7)中。The solar water heater heat storage unit with safety device according to claim 5, wherein the shielding member (8) is a notched metal piece having a diameter smaller than an inner diameter of the heat storage element and mounted on the sealing flange ( 2) One side, and when installed, the notch faces downward and is immersed in the heat storage material (7).
- 根据权利要求5所述的带安全装置的太阳能热水器储热单元,其特征在于,所述的遮挡件(8)为一U形毛细铜管,焊接在泄压孔(9)的内侧开口处,U形毛细铜管顶部贴近储热元件(1)顶部内壁,其开口朝向并贴近密封法兰(2)内表面。The solar water heater heat storage unit with safety device according to claim 5, wherein the shielding member (8) is a U-shaped capillary copper tube welded to the inner opening of the pressure relief hole (9). The top of the U-shaped capillary copper tube is close to the top inner wall of the heat storage element (1), and its opening faces and is close to the inner surface of the sealing flange (2).
- 根据权利要求2所述的带安全装置的太阳能热水器储热单元,其特征在于,所述的储热元件(1)内装有带通气孔的换热管支撑片。The solar water heater heat storage unit with safety device according to claim 2, wherein the heat storage element (1) is provided with a heat exchange tube support piece with a vent hole.
- 根据权利要求1所述的带安全装置的太阳能热水器储热单元,其特征在于,所述的泄压阀(4)为压力安全阀,其开启压力不高于储热元件(1)的安全工作压力,且不低于相变储热材料(7)使用时的饱和蒸汽压力。 The solar water heater heat storage unit with safety device according to claim 1, wherein the pressure relief valve (4) is a pressure safety valve, and the opening pressure is not higher than the safe operation of the heat storage element (1). The pressure is not lower than the saturated vapor pressure when the phase change heat storage material (7) is used.
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CN204923511U (en) * | 2015-07-31 | 2015-12-30 | 江苏启能新能源材料有限公司 | Take safety device's solar water heater heat -retaining unit |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
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US4219072A (en) * | 1978-02-10 | 1980-08-26 | Barlow Donald W Sr | Phase change material heat exchanger |
CN101266077A (en) * | 2008-04-17 | 2008-09-17 | 林祥参 | Refracted light gathering, high-temperature thermal storage type solar boiler |
CN104034067A (en) * | 2014-04-28 | 2014-09-10 | 江苏恒星聚能能源科技有限公司 | Solar heat storage type vacuum heat pipe |
CN105020917A (en) * | 2015-07-31 | 2015-11-04 | 江苏启能新能源材料有限公司 | Solar water heater heat storage unit with safety device and installation method of heat storage unit |
CN204923511U (en) * | 2015-07-31 | 2015-12-30 | 江苏启能新能源材料有限公司 | Take safety device's solar water heater heat -retaining unit |
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2015
- 2015-07-31 CN CN201520570187.9U patent/CN204923511U/en active Active
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Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
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US4219072A (en) * | 1978-02-10 | 1980-08-26 | Barlow Donald W Sr | Phase change material heat exchanger |
CN101266077A (en) * | 2008-04-17 | 2008-09-17 | 林祥参 | Refracted light gathering, high-temperature thermal storage type solar boiler |
CN104034067A (en) * | 2014-04-28 | 2014-09-10 | 江苏恒星聚能能源科技有限公司 | Solar heat storage type vacuum heat pipe |
CN105020917A (en) * | 2015-07-31 | 2015-11-04 | 江苏启能新能源材料有限公司 | Solar water heater heat storage unit with safety device and installation method of heat storage unit |
CN204923511U (en) * | 2015-07-31 | 2015-12-30 | 江苏启能新能源材料有限公司 | Take safety device's solar water heater heat -retaining unit |
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