CN220541798U - A low-pressure exhaust steam and condensate water thermal energy efficient utilization system - Google Patents

A low-pressure exhaust steam and condensate water thermal energy efficient utilization system Download PDF

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CN220541798U
CN220541798U CN202322216532.6U CN202322216532U CN220541798U CN 220541798 U CN220541798 U CN 220541798U CN 202322216532 U CN202322216532 U CN 202322216532U CN 220541798 U CN220541798 U CN 220541798U
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heat exchanger
steam
water
heat
condensed water
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申晓玥
申靖宇
南朋御
雷刚
申若飞
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Hangzhou Bili Energy Saving Technology Co ltd
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Hangzhou Bili Energy Saving Technology Co ltd
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Abstract

The utility model discloses a low-pressure exhaust steam and condensed water heat energy efficient utilization system, which comprises an input pipeline for inputting high-temperature condensed water, wherein the output end of the input pipeline is provided with a flash evaporator for separating water from the input high-temperature condensed water, the right side of the flash evaporator is provided with a heat exchange system for utilizing the heat energy of the high-temperature condensed water, the heat exchange system comprises a first heat exchanger for utilizing the low-pressure condensed water discharged by the flash evaporator, a second heat exchanger for utilizing flash steam and noncondensable steam discharged by the flash evaporator is arranged above the first heat exchanger, and the right side of the second heat exchanger is provided with a water tank matched with the first heat exchanger and the second heat exchanger. The utility model solves the problem of lower heat energy utilization efficiency of the traditional condensed water heat energy utilization system in the prior art. The utility model has the advantages of simple structure, convenient use, high heat utilization rate and the like.

Description

一种低压乏汽和冷凝水热能高效利用系统A low-pressure exhaust steam and condensate water thermal energy efficient utilization system

技术领域Technical field

本实用新型涉及一种高温冷凝水回收利用系统,更具体地说,涉及一种低压乏汽和冷凝水热能高效利用系统。The utility model relates to a high-temperature condensed water recovery and utilization system, and more specifically, to a low-pressure exhaust steam and condensed water thermal energy efficient utilization system.

背景技术Background technique

目前,中国专利网上公开了了一种废蒸汽及热水热能回收系统,公开号CN208410485U,包括:水汽分离器,与蒸汽排出管连接;废蒸汽及冷凝水收集装置,与水汽分离器的顶部的第一蒸汽出口连接;第一热水泵,与水汽分离器的底部的第一冷凝水出口连接,其中第一热水泵与废蒸汽及冷凝水收集装置连接;冷凝水罐,与第一热水泵连接,其中冷凝水罐的第二冷凝水出口与蒸汽排出管连接;其中,冷凝水罐与废蒸汽及冷凝水收集装置的底部的第三冷凝水出口连接,其中废蒸汽及冷凝水收集装置的顶部的第二蒸汽出口与第一水蒸气输送管连接。通过上述方式,本实用新型所公开的废蒸汽及热水热能回收系统可以回收泡沫成型机所排出的废蒸汽以及冷凝水,能够显著降低蒸汽消耗,并能够改善工作环境。Currently, a waste steam and hot water heat energy recovery system has been disclosed on China Patent Online, Publication No. CN208410485U, which includes: a water vapor separator connected to the steam discharge pipe; a waste steam and condensed water collection device connected to the top of the water vapor separator The first steam outlet is connected; the first hot water pump is connected to the first condensed water outlet at the bottom of the water vapor separator, wherein the first hot water pump is connected to the waste steam and condensed water collection device; the condensed water tank is connected to the first hot water pump , wherein the second condensed water outlet of the condensed water tank is connected to the steam discharge pipe; wherein the condensed water tank is connected to the third condensed water outlet at the bottom of the waste steam and condensed water collection device, wherein the top of the waste steam and condensed water collection device The second steam outlet is connected with the first steam delivery pipe. Through the above method, the waste steam and hot water heat energy recovery system disclosed in the present utility model can recover the waste steam and condensed water discharged from the foam molding machine, which can significantly reduce steam consumption and improve the working environment.

上述专利中的换热器和密闭蒸汽直接加热容器中排出的冷凝水含有大量不凝性气体、污染物和可利用的热能,直接排放会造成环境污染和能源浪费,冷凝水需要冷却后处理和排放。不凝性气体与冷凝水及闪蒸汽混合在一起,换热系数小,影响换热效率,因此冷凝水的热能利用率较低。冷凝水温度较高,在管道里是汽水混合物的状态,直接使用水泵输送水泵很快就会气蚀损坏。不适合远距离输送换热。The condensed water discharged from the heat exchanger and the sealed steam direct heating container in the above patent contains a large amount of non-condensable gases, pollutants and available heat energy. Direct discharge will cause environmental pollution and energy waste. The condensed water needs to be cooled and processed. emission. Non-condensable gas is mixed with condensed water and flash steam, and the heat transfer coefficient is small, which affects the heat exchange efficiency, so the heat energy utilization rate of the condensed water is low. The condensate water has a high temperature and is in the state of a mixture of steam and water in the pipeline. If the water pump is directly used to transport the water, the pump will soon be damaged by cavitation. Not suitable for long-distance heat transfer.

实用新型内容Utility model content

本实用新型为了克服现有技术中存在的传统的冷凝水热能利用系统的热能利用效率较低的问题,现提供具有较高热能利用率的优点的一种低压乏汽和冷凝水热能高效利用系统。In order to overcome the problem of low thermal energy utilization efficiency of the traditional condensate water thermal energy utilization system existing in the prior art, the utility model now provides a low-pressure exhaust steam and condensate water thermal energy efficient utilization system with the advantage of higher thermal energy utilization rate. .

本实用新型的一种低压乏汽和冷凝水热能高效利用系统,包括用于输入高温冷凝水的输入管道,所述的输入管道的输出端设有用于对输入的高温冷凝水进行水汽分离的闪蒸器,所述的闪蒸器的右侧设有用于利用高温冷凝水热能的换热系统,所述的换热系统包括用于利用闪蒸器排出的低压冷凝水的一号换热器,所述的一号换热器上方设有用于利用闪蒸器排出的闪蒸汽和不凝汽体的二号换热器,所述的二号换热器右侧设有与一号换热器和二号换热器配合使用的水箱。The utility model provides a low-pressure exhaust steam and condensate water thermal energy efficient utilization system, which includes an input pipe for inputting high-temperature condensed water. The output end of the input pipe is provided with a flash for water vapor separation of the input high-temperature condensed water. Evaporator, the right side of the flash evaporator is provided with a heat exchange system for utilizing the thermal energy of high-temperature condensed water. The heat exchange system includes a No. 1 heat exchanger for utilizing the low-pressure condensed water discharged from the flash evaporator. There is a No. 2 heat exchanger above the No. 1 heat exchanger for utilizing the flash steam and non-condensable gas discharged from the flash evaporator. On the right side of the No. 2 heat exchanger, there is a heat exchanger with the No. 1 heat exchanger and the No. 2 heat exchanger. Water tank used with heater.

作为优选,所述的输入管道的右侧输出端与闪蒸器的左侧输入端通过设置法兰相连接,所述的闪蒸器上端设有用于排出产生的闪蒸汽和不凝汽体的排出口,所述的闪蒸器下端设有用于排放产生的低压冷凝水的疏水口,所述的一号换热器的左侧输入端与闪蒸器的疏水口间通过设置疏水管道相连接,所述的二号换热器的左侧输入端与闪蒸汽的排出口间通过设置蒸汽管道相连接。Preferably, the right output end of the input pipe is connected to the left input end of the flash evaporator through a flange, and the upper end of the flash evaporator is provided with an outlet for discharging the generated flash steam and non-condensable gas. , the lower end of the flash evaporator is provided with a drain port for discharging the generated low-pressure condensate water, and the left input end of the No. 1 heat exchanger is connected to the drain port of the flash evaporator by a drain pipe. The left input end of the No. 2 heat exchanger is connected to the flash steam outlet through a steam pipe.

作为优选,所述的一号换热器下端的冷却水输入端与水箱左端的冷却水输出端间通过设置冷却管道和液压泵相连接,所述的一号换热器上端的冷却水输出端与二号换热器下端的冷却水输入端间通过设置输送管道相连接,所述的二号换热器上端的冷却水输出端与水箱上端的冷却水回流端间通过设置回流管道相连接。Preferably, the cooling water input end at the lower end of the No. 1 heat exchanger is connected to the cooling water output end at the left end of the water tank through a cooling pipe and a hydraulic pump, and the cooling water output end at the upper end of the No. 1 heat exchanger is connected. It is connected to the cooling water input end at the lower end of the No. 2 heat exchanger through a delivery pipe, and the cooling water output end at the upper end of the No. 2 heat exchanger is connected to the cooling water return end at the upper end of the water tank through a return pipe.

作为优选,所述的一号换热器右侧设有用于收集和排放经过换热后的冷凝水的排污总管,所述的一号换热器右端的输出端和二号换热器下端的输出端分别与排污总管的输入端通过设置管道和法兰相连接,所述的二号换热器上端设有开设有用于排放经过换热后不凝汽体的排汽口。Preferably, the right side of the No. 1 heat exchanger is provided with a sewage main pipe for collecting and discharging the condensed water after heat exchange. The output end of the right end of the No. 1 heat exchanger and the lower end of the No. 2 heat exchanger are The output end is respectively connected to the input end of the sewage main pipe through pipes and flanges. The upper end of the No. 2 heat exchanger is provided with a steam exhaust port for discharging non-condensable gas after heat exchange.

冷凝水进入换热器之前首先进行闪蒸,将水汽分离。热水集中在闪蒸器下部,汽体集中在闪蒸器上部。冷凝水量较小时,可以将管道放大,利用管道作为闪蒸器。一号换热器为水水换热器,安装在低位,安装高度低于闪蒸器下部出水口。闪蒸器下部的热水靠重力作用自然流入一号换热器,经过换热器出口排出。二号换热器为水汽换热器,安装在高位,安装高度高于闪蒸器上部出汽口。闪蒸汽和不凝气体从闪蒸器上部出汽口排出,进入二号换热器。蒸汽换热后冷凝成水,从疏水系统排出。不凝性气体冷却后不会冷凝成水,不凝性气体密度小,从二号换热器上部的排汽口排出。避免不凝性气体集中在换热器里影响换热效率。另外闪蒸汽和热水分离后,进入不同的换热器,换热效率大幅提升。水箱内的水首先通过水泵送进一号换热器换热,经过一号换热器换热后从上部出口再进入二号换热器换热,然后再回到水箱,热水供工艺使用。经过两级换热后,热水保持较高温度。冷凝水经过充分换热,温度大幅降低,排入排污总管,利用热能的同时避免高温冷凝水闪蒸汽无组织排放。Before the condensed water enters the heat exchanger, it is first flashed to separate the water vapor. Hot water is concentrated in the lower part of the flash evaporator, and steam is concentrated in the upper part of the flash evaporator. When the amount of condensed water is small, the pipeline can be enlarged and used as a flash evaporator. The No. 1 heat exchanger is a water-to-water heat exchanger, installed at a low position, and the installation height is lower than the water outlet at the bottom of the flash evaporator. The hot water in the lower part of the flash evaporator naturally flows into the No. 1 heat exchanger by gravity and is discharged through the heat exchanger outlet. The No. 2 heat exchanger is a water-vapor heat exchanger, installed at a high position, and the installation height is higher than the upper steam outlet of the flash evaporator. Flash steam and non-condensable gas are discharged from the upper steam outlet of the flash evaporator and enter the No. 2 heat exchanger. After heat exchange, the steam condenses into water and is discharged from the drainage system. The non-condensable gas will not condense into water after cooling. The non-condensable gas has a low density and is discharged from the exhaust port on the upper part of the No. 2 heat exchanger. Prevent non-condensable gas from concentrating in the heat exchanger and affecting heat exchange efficiency. In addition, after the flash steam and hot water are separated, they enter different heat exchangers, and the heat exchange efficiency is greatly improved. The water in the water tank is first sent to the No. 1 heat exchanger through the water pump for heat exchange. After heat exchange in the No. 1 heat exchanger, it enters the No. 2 heat exchanger from the upper outlet for heat exchange, and then returns to the water tank. The hot water is used for the process. . After two stages of heat exchange, the hot water maintains a higher temperature. After sufficient heat exchange, the temperature of the condensed water is greatly reduced and discharged into the sewage main pipe, which utilizes thermal energy while avoiding the unorganized discharge of high-temperature condensed water flash steam.

本实用新型具有以下有益效果:结构简单,使用方便,热能利用率高。The utility model has the following beneficial effects: simple structure, convenient use and high thermal energy utilization rate.

附图说明Description of drawings

附图1为本实用新型的结构示意图。Figure 1 is a schematic structural diagram of the utility model.

输入管道1,闪蒸器2,一号换热器3,二号换热器4,水箱5,排污总管6。Input pipe 1, flash evaporator 2, No. 1 heat exchanger 3, No. 2 heat exchanger 4, water tank 5, sewage main pipe 6.

具体实施方式Detailed ways

通过实施例,并结合附图,对本实用新型的技术方案作进一步具体的说明。The technical solution of the present utility model will be further described in detail through examples and in conjunction with the accompanying drawings.

实施例:根据附图1对本实用新型进行进一步说明,本例的一种低压乏汽和冷凝水热能高效利用系统,包括用于输入高温冷凝水的输入管道1,所述的输入管道1的输出端设有用于对输入的高温冷凝水进行水汽分离的闪蒸器2,所述的闪蒸器2的右侧设有用于利用高温冷凝水热能的换热系统,所述的换热系统包括用于利用闪蒸器2排出的低压冷凝水的一号换热器3,所述的一号换热器3上方设有用于利用闪蒸器2排出的闪蒸汽和不凝汽体的二号换热器4,所述的二号换热器4右侧设有与一号换热器3和二号换热器4配合使用的水箱5。Embodiment: The utility model will be further described according to the accompanying drawing 1. In this example, a low-pressure exhaust steam and condensed water thermal energy efficient utilization system includes an input pipe 1 for inputting high-temperature condensed water. The output of the input pipe 1 A flash evaporator 2 is provided at one end for water vapor separation of the input high-temperature condensed water. A heat exchange system for utilizing the thermal energy of the high-temperature condensed water is provided on the right side of the flash evaporator 2. The heat exchange system includes a The No. 1 heat exchanger 3 is used for the low-pressure condensate water discharged from the flash evaporator 2. A No. 2 heat exchanger 4 is provided above the No. 1 heat exchanger 3 for utilizing the flash steam and non-condensable gas discharged from the flash evaporator 2. There is a water tank 5 used in conjunction with the No. 1 heat exchanger 3 and the No. 2 heat exchanger 4 on the right side of the No. 2 heat exchanger 4.

所述的输入管道1的右侧输出端与闪蒸器2的左侧输入端通过设置法兰相连接,所述的闪蒸器2上端设有用于排出产生的闪蒸汽和不凝汽体的排出口,所述的闪蒸器2下端设有用于排放产生的低压冷凝水的疏水口,所述的一号换热器3的左侧输入端与闪蒸器2的疏水口间通过设置疏水管道相连接,所述的二号换热器4的左侧输入端与闪蒸汽的排出口间通过设置蒸汽管道相连接。The right output end of the input pipe 1 is connected to the left input end of the flash evaporator 2 through a flange. The upper end of the flash evaporator 2 is provided with an outlet for discharging the generated flash steam and non-condensable gas. , the lower end of the flash evaporator 2 is provided with a drain port for discharging the generated low-pressure condensed water, and the left input end of the No. 1 heat exchanger 3 is connected to the drain port of the flash evaporator 2 through a drain pipe. The left input end of the No. 2 heat exchanger 4 is connected to the discharge outlet of the flash steam through a steam pipe.

所述的一号换热器3下端的冷却水输入端与水箱5左端的冷却水输出端间通过设置冷却管道和液压泵相连接,所述的一号换热器3上端的冷却水输出端与二号换热器4下端的冷却水输入端间通过设置输送管道相连接,所述的二号换热器4上端的冷却水输出端与水箱5上端的冷却水回流端间通过设置回流管道相连接。The cooling water input end of the lower end of the No. 1 heat exchanger 3 is connected to the cooling water output end of the left end of the water tank 5 through a cooling pipe and a hydraulic pump. The cooling water output end of the upper end of the No. 1 heat exchanger 3 is connected. It is connected to the cooling water input end of the lower end of the No. 2 heat exchanger 4 through a delivery pipe, and a return pipe is provided between the cooling water output end of the upper end of the No. 2 heat exchanger 4 and the cooling water return end of the upper end of the water tank 5. connected.

所述的一号换热器3右侧设有用于收集和排放经过换热后的冷凝水的排污总管6,所述的一号换热器3右端的输出端和二号换热器4下端的输出端分别与排污总管6的输入端通过设置管道和法兰相连接,所述的二号换热器4上端设有开设有用于排放经过换热后不凝汽体的排汽口。The right side of the No. 1 heat exchanger 3 is provided with a sewage main pipe 6 for collecting and discharging the condensed water after heat exchange. The output end of the right end of the No. 1 heat exchanger 3 and the lower end of the No. 2 heat exchanger 4 The output end of the heat exchanger 4 is respectively connected to the input end of the sewage main pipe 6 through pipes and flanges. The upper end of the No. 2 heat exchanger 4 is provided with an exhaust port for discharging non-condensable gas after heat exchange.

以上所述仅为本实用新型的具体实施例,但本实用新型的结构特征并不局限于此,任何本领域的技术人员在本实用新型的领域内,所作的变化或修饰皆涵盖在本实用新型的专利范围之中。The above are only specific embodiments of the present utility model, but the structural features of the present utility model are not limited thereto. Any changes or modifications made by those skilled in the art in the field of the present utility model are covered by the present utility model. Within the scope of new patents.

Claims (4)

1. The utility model provides a low pressure exhaust steam and comdenstion water heat energy high efficiency utilization system, includes input pipeline (1) that is used for inputing high temperature comdenstion water, characterized by, the output of input pipeline (1) be equipped with flash vessel (2) that are used for carrying out water vapor separation to the high temperature comdenstion water of input, the right side of flash vessel (2) be equipped with the heat transfer system who is used for utilizing high temperature comdenstion water heat energy, heat transfer system including being used for utilizing flash vessel (2) exhaust low pressure comdenstion water first heat exchanger (3), first heat exchanger (3) top be equipped with be used for utilizing flash vessel (2) exhaust flash steam and noncondensable steam second heat exchanger (4), second heat exchanger (4) right side be equipped with first heat exchanger (3) and second heat exchanger (4) cooperation water tank (5).
2. The high-efficiency low-pressure exhaust steam and condensed water heat energy utilization system according to claim 1 is characterized in that the right side output end of the input pipeline (1) is connected with the left side input end of the flash evaporator (2) through a setting flange, the upper end of the flash evaporator (2) is provided with a discharge port for discharging generated flash steam and noncondensable steam, the lower end of the flash evaporator (2) is provided with a drain port for discharging generated low-pressure condensed water, the left side input end of the first heat exchanger (3) is connected with the drain port of the flash evaporator (2) through a setting drain pipeline, and the left side input end of the second heat exchanger (4) is connected with the discharge port of the flash steam through a setting steam pipeline.
3. The low-pressure exhaust steam and condensed water heat energy efficient utilization system according to claim 1 is characterized in that a cooling water input end of the lower end of the first heat exchanger (3) is connected with a cooling water output end of the left end of the water tank (5) through a cooling pipeline and a hydraulic pump, a cooling water output end of the upper end of the first heat exchanger (3) is connected with a cooling water input end of the lower end of the second heat exchanger (4) through a conveying pipeline, and a cooling water output end of the upper end of the second heat exchanger (4) is connected with a cooling water backflow end of the upper end of the water tank (5) through a backflow pipeline.
4. The low-pressure exhaust steam and condensed water heat energy efficient utilization system according to claim 1 is characterized in that a drain header pipe (6) for collecting and discharging condensed water subjected to heat exchange is arranged on the right side of the first heat exchanger (3), an output end of the right end of the first heat exchanger (3) and an output end of the lower end of the second heat exchanger (4) are connected with an input end of the drain header pipe (6) through a set pipeline and a flange respectively, and a steam outlet for discharging noncondensable steam after heat exchange is formed in the upper end of the second heat exchanger (4).
CN202322216532.6U 2023-08-17 2023-08-17 A low-pressure exhaust steam and condensate water thermal energy efficient utilization system Active CN220541798U (en)

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CN202322216532.6U CN220541798U (en) 2023-08-17 2023-08-17 A low-pressure exhaust steam and condensate water thermal energy efficient utilization system

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