CN109374322B - Water chilling unit testing device with heat recovery function - Google Patents
Water chilling unit testing device with heat recovery function Download PDFInfo
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- CN109374322B CN109374322B CN201811129878.XA CN201811129878A CN109374322B CN 109374322 B CN109374322 B CN 109374322B CN 201811129878 A CN201811129878 A CN 201811129878A CN 109374322 B CN109374322 B CN 109374322B
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Abstract
Description
技术领域technical field
本发明涉及热泵机组测试技术领域，尤其是一种测试带热回收功能的冷水机组测试装置。The invention relates to the technical field of heat pump unit testing, in particular to a testing device for a chiller unit with a heat recovery function.
背景技术Background technique
冷水机组的冷却水放出的热量通常被冷却塔排向周围环境中,对需要用热的场所如宾馆、工厂、医院等来说是一种巨大的浪费,同时给周围环境带来一定的废热污染。而热回收技术就是通过一定的方式将冷水机组运行过程中排向外界的大量废热回收再利用,作为用户的最终热源或初级热源,用于空调水或风的预热、工业用水加热等,既可节约能源,又可减少设备运行费用和噪声,缩短冷却塔、冷却泵运行时间，而且热回收既可减少运行费用又可减少环境污染,达到节能减排的目标。现有的测试冷水机组测试装置还不能实现上述目标，因此急需一种测试带热回收功能的冷水机组测试装置。The heat released by the cooling water of the chiller is usually discharged to the surrounding environment by the cooling tower, which is a huge waste for places that need heat, such as hotels, factories, hospitals, etc. . The heat recovery technology is to recycle and reuse a large amount of waste heat discharged to the outside during the operation of the chiller in a certain way, as the final heat source or primary heat source of the user, used for preheating air-conditioning water or wind, heating industrial water, etc. It can save energy, reduce equipment operating costs and noise, shorten the operating time of cooling towers and cooling pumps, and heat recovery can reduce operating costs and environmental pollution, achieving the goal of energy conservation and emission reduction. The existing testing device for testing chillers cannot achieve the above goals, so a testing device for testing chillers with heat recovery function is urgently needed.
发明内容SUMMARY OF THE INVENTION
为了克服上述现有技术存在的不足，为此，本发明提供一种测试带热回收功能的冷水机组测试装置。In order to overcome the above-mentioned deficiencies in the prior art, the present invention provides a test device for a chiller with a heat recovery function.
为实现上述目的，本发明采用以下技术方案：To achieve the above object, the present invention adopts the following technical solutions:
一种测试带热回收功能的冷水机组测试装置，包括与蒸发器相连接的蒸发器侧循环管路、与冷凝器相连接的冷凝器侧循环管路，所述蒸发器侧循环管路与冷凝器侧循环管路通过第一兑水循环管路连通，本装置还包括与热回收器相连接的热回收器侧循环管路，热回收器侧循环管路与热回收器形成闭式循环，该装置还包括第二兑水循环管路，所述热回收器侧循环管路与外部冷源、或与蒸发器侧循环管路、或与冷凝器侧循环管路通过第二兑水循环管路连通。A test device for testing a chiller with a heat recovery function, comprising an evaporator-side circulation pipeline connected to an evaporator, a condenser-side circulation pipeline connected to a condenser, and the evaporator-side circulation pipeline is connected to the condenser. The circulation pipeline on the side of the heat recovery device is communicated through the first water mixing circulation pipeline, and the device also includes a circulation pipeline on the side of the heat recovery device connected with the heat recovery device. The device further includes a second water mixing circulation pipeline, the heat recovery side circulation pipeline is communicated with the external cold source, or with the evaporator side circulation pipeline, or with the condenser side circulation pipeline through the second water mixing circulation pipeline.
优化的，所述蒸发器侧循环管路、冷凝器侧循环管路、热回收器侧循环管路上均设置有使蒸发器、冷凝器、热回收器水循环的泵体，第二兑水循环管路与蒸发器侧循环管路、冷凝器侧循环管路、热回收器侧循环管路连接点均设置在相应循环管路内泵体入口处的管路上。Optimized, the evaporator side circulation pipeline, condenser side circulation pipeline, and heat recovery side circulation pipeline are all provided with a pump body that circulates water in the evaporator, condenser, and heat recovery device, and the second water mixing circulation pipeline. The connection points with the evaporator side circulation pipeline, the condenser side circulation pipeline and the heat recovery device side circulation pipeline are all arranged on the pipeline at the inlet of the pump body in the corresponding circulation pipeline.
优化的，所述蒸发器侧循环管路、冷凝器侧循环管路、热回收器侧循环管路上均设置有测循环管路上流量的流量计，所述流量计均设置在相应循环管路内泵体出口处的管路上。Preferably, the evaporator side circulation pipeline, the condenser side circulation pipeline, and the heat recovery device side circulation pipeline are all provided with flowmeters for measuring the flow on the circulation pipelines, and the flowmeters are all set in the corresponding circulation pipelines. on the line at the pump outlet.
优化的，所述蒸发器侧循环管路、冷凝器侧循环管路、热回收器侧循环管路上分别对应设置有测量蒸发器、冷凝器、热回收器的进水端处温度和出水端处温度的温度计。Preferably, the evaporator side circulation pipeline, the condenser side circulation pipeline, and the heat recovery device side circulation pipeline are respectively set to measure the temperature at the water inlet end and the water outlet end of the evaporator, the condenser, and the heat recovery device. temperature thermometer.
优化的，所述蒸发器侧循环管路、冷凝器侧循环管路、热回收器侧循环管路上均设置有测循环管路上控制流量的控制阀，且分别为冷水阀、冷却水阀、热回收水阀。Optimized, the evaporator side circulation pipeline, condenser side circulation pipeline, and heat recovery device side circulation pipeline are all provided with control valves for measuring the flow on the circulation pipeline, and are respectively a cold water valve, a cooling water valve, and a heat recovery valve. Recovery valve.
优化的，所述第二兑水循环管路包括第二驱动支路和第二回流管路，第二驱动支路上设置有第一水泵，第一水泵的输入端为第二驱动支路的输入端；Preferably, the second water mixing circulation pipeline includes a second drive branch and a second return pipeline, the second drive branch is provided with a first water pump, and the input end of the first water pump is the input end of the second drive branch ;
当第二兑水循环管路连接在热回收器侧循环管路与冷凝器侧循环管路之间时，第二驱动支路的输入端与热回收器侧循环管路连接，输出端与冷凝器侧循环管路连接，水通过第二回流管路从冷凝器侧循环管路输出至热回收器侧循环管路中，第二回流管路与热回收器侧循环管路连接点相对于第二驱动支路输入端与热回收器侧循环管路连接点靠近热回收器的输出端，第二驱动支路输出端与冷凝器侧循环管路连接点相对于第二回流管路与冷凝器侧循环管路连接点靠近相应的冷凝器的输出端；When the second water mixing circuit is connected between the heat recovery side circulation pipe and the condenser side circulation pipe, the input end of the second driving branch is connected with the heat recovery device side circulation pipe, and the output end is connected with the condenser side circulation pipe. The side circulation pipeline is connected, and the water is output from the condenser side circulation pipeline to the heat recovery device side circulation pipeline through the second return pipeline. The connection point between the input end of the drive branch and the circulation line on the heat recovery side is close to the output end of the heat recovery device, and the connection point between the output end of the second drive branch and the circulation line on the condenser side is opposite to the second return line and the condenser side. The connection point of the circulation pipeline is close to the output end of the corresponding condenser;
当第二兑水循环管路连接在热回收器侧循环管路与蒸发器侧循环管路之间时，第二驱动支路的输入端与热回收器侧循环管路连接，输出端与蒸发器侧循环管路连接，水通过第二回流管路从蒸发器侧循环管路输出至热回收器侧循环管路中，第二回流管路与热回收器侧循环管路连接点相对于第二驱动支路输入端与热回收器侧循环管路连接点靠近热回收器的输出端，第二驱动支路输出端与蒸发器侧循环管路连接点相对于第二回流管路与蒸发器侧循环管路连接点靠近蒸发器的输出端。When the second water mixing circuit is connected between the heat recovery side circulation pipe and the evaporator side circulation pipe, the input end of the second driving branch is connected with the heat recovery side circulation pipe, and the output end is connected with the evaporator The side circulation pipeline is connected, and the water is output from the evaporator side circulation pipeline to the heat recovery side circulation pipeline through the second return pipeline. The connection point between the second return pipeline and the heat recovery side circulation pipeline is opposite to the second The connection point between the input end of the drive branch and the circulation line on the heat recovery side is close to the output end of the heat recovery device, and the connection point between the output end of the second drive branch and the circulation line on the evaporator side is opposite to the second return line and the evaporator side. The recycle line connection point is close to the output of the evaporator.
优化的，第一兑水循环管路包括第一驱动支路和第一回流管路，第一驱动支路上设置有冷却兑水泵，冷却兑水泵的输入端为第一驱动支路的输入端，第一驱动支路的输入端与冷凝器侧循环管路连接，输出端与蒸发器侧循环管路连接，水通过第一回流管路从蒸发器侧循环管路输出至冷凝器侧循环管路中，第一回流管路与冷凝器侧循环管路连接点相对于第一驱动支路输入端与冷凝器侧循环管路连接点靠近冷凝器的输出端，第一驱动支路输出端与蒸发器侧循环管路连接点相对于第一回流管路与蒸发器侧循环管路连接点靠近蒸发器的输出端。Preferably, the first water mixing circulation pipeline includes a first driving branch and a first return pipeline, a cooling water pump is arranged on the first driving branch, and the input end of the cooling water pump is the input end of the first driving branch, and the first driving branch is provided with a cooling water pump. The input end of a drive branch is connected to the condenser side circulation line, the output end is connected to the evaporator side circulation line, and the water is output from the evaporator side circulation line to the condenser side circulation line through the first return line , the connection point between the first return line and the condenser side circulation line is close to the output end of the condenser relative to the connection point between the input end of the first drive branch and the condenser side circulation line, and the output end of the first drive branch is connected to the evaporator The connection point of the side circulation line is close to the output end of the evaporator relative to the connection point of the first return line and the evaporator side circulation line.
优化的，蒸发器侧循环管路、冷凝器侧循环管路、热回收器侧循环管路上的泵体分别为冷水泵、冷却水泵、热回收水泵，且均为变频水泵。Optimized, the pump bodies on the evaporator side circulation pipeline, the condenser side circulation pipeline, and the heat recovery side circulation pipeline are the cold water pump, the cooling water pump, and the heat recovery water pump respectively, and they are all variable frequency water pumps.
优化的，装置还包括第三兑水循环管路，第三兑水循环管路包括第三驱动支路和第三回流管路，第三驱动支路上设置有冷却加水泵，冷却加水泵的输入端为第三驱动支路的输入端，冷却加水泵的输出端与冷凝器侧循环管路连接点设置在热回收水泵入口处的管路上，即冷凝器的输出端与冷却水泵之间的管路上，冷却加水泵的输出端与冷凝器侧循环管路连接点靠近冷却水泵的入口处，第三回流管路与冷凝器侧循环管路连接点靠近冷凝器的输出端。Optimized, the device further includes a third water mixing circulation line, the third water mixing circulation line includes a third driving branch and a third return line, and a cooling and adding water pump is arranged on the third driving branch, and the input end of the cooling and adding water pump is: The input end of the third drive branch, the connection point between the output end of the cooling and adding water pump and the circulation pipeline on the condenser side is set on the pipeline at the inlet of the heat recovery pump, that is, on the pipeline between the output end of the condenser and the cooling water pump, The connection point between the output end of the cooling water pump and the condenser side circulation pipeline is close to the inlet of the cooling water pump, and the connection point between the third return line and the condenser side circulation pipeline is close to the output end of the condenser.
本发明的优点在于：The advantages of the present invention are:
(1)本发明为热回收器设置单独的管路和设备，可以满足带热回收功能的冷水机组的模拟实验，可以进行部分热回收及全热回收的模拟实验。(1) The present invention provides a separate pipeline and equipment for the heat recovery device, which can meet the simulation experiment of the chiller with heat recovery function, and can carry out the simulation experiment of partial heat recovery and full heat recovery.
(2)本发明通过热回收加水泵控制上游冷源输入量对进入热回收器中的水降温，以此模拟进出热回收器热水的流量、温度等参数对带热回收功能的冷水机组进行测试。(2) The present invention controls the input of the upstream cold source to cool the water entering the heat recovery device through the heat recovery pump and controls the temperature of the water entering the heat recovery device, so as to simulate the flow, temperature and other parameters of the hot water entering and leaving the heat recovery device. test.
(3)本发明设置第二兑水循环管路，将热回收器侧循环管路内的高温水和冷凝器侧循环管路内的冷却水进行换热，简化了整体装置的冷却方案。或者将热热回收器侧循环管路内的高温水和蒸发器侧循环管路内的低温水进行换热，降低了第一水泵的运行流量和整体能耗。(3) The present invention is provided with a second water mixing circulating pipeline to exchange heat between the high temperature water in the circulating pipeline on the heat recovery side and the cooling water in the circulating pipeline on the condenser side, which simplifies the cooling scheme of the overall device. Alternatively, the high-temperature water in the circulation pipeline on the side of the heat heat recovery device and the low-temperature water in the circulating pipeline on the evaporator side are heat-exchanged, thereby reducing the operating flow and overall energy consumption of the first water pump.
(4)本发明中第一兑水循环管路和第二兑水循环管路中，第一驱动支路与第一回流管路交叉设置、第二驱动支路与第二回流管路交叉设置，这样可以使得测试装置获得更大的换热温差。(4) In the present invention, in the first water mixing circulation pipeline and the second water mixing circulation pipeline, the first driving branch and the first return pipeline are arranged to intersect, and the second driving branch and the second return pipeline are arranged to intersect, so that The test device can obtain a larger heat exchange temperature difference.
附图说明Description of drawings
图1为本发明实施例1中一种测试带热回收功能的冷水机组测试装置的结构示意图。FIG. 1 is a schematic structural diagram of a test device for testing a chiller with a heat recovery function in Embodiment 1 of the present invention.
图2为本发明实施例2中一种测试带热回收功能的冷水机组测试装置的结构示意图。FIG. 2 is a schematic structural diagram of a test device for testing a chiller with a heat recovery function in Embodiment 2 of the present invention.
图3为本发明实施例3中一种测试带热回收功能的冷水机组测试装置的结构示意图。3 is a schematic structural diagram of a test device for testing a chiller with a heat recovery function in Embodiment 3 of the present invention.
图中标注符号的含义如下：The meanings of the symbols in the figure are as follows:
1-1-冷水泵 1-2-冷却水泵 1-3-热回收水泵 1-4-冷却兑水泵1-1-Cold water pump 1-2-Cooling water pump 1-3-Heat recovery water pump 1-4-Cooling mixing water pump
1-5-冷却加水泵 1-6-第一水泵1-5-Cooling water pump 1-6-First water pump
2-1-冷水阀 2-2-冷却水阀 2-3-热回收水阀2-1-Cold water valve 2-2-Cooling water valve 2-3-Heat recovery water valve
3-1-冷水流量计 3-2-冷却水流量计 3-3-热回收水流量计3-1-Cold water flowmeter 3-2-Cooling water flowmeter 3-3-Heat recovery water flowmeter
4-1-蒸发器 4-2-冷凝器 4-3-热回收器4-1-Evaporator 4-2-Condenser 4-3-Heat Recovery
T1-蒸发器进水温度计 T2-蒸发器出水温度计T1-evaporator inlet water thermometer T2-evaporator outlet water thermometer
T3-冷凝器进水温度计 T4-冷凝器出水温度计T3-Condenser inlet water thermometer T4-Condenser outlet water thermometer
T5-热回收器出水温度计 T6-热回收器进水温度计T5-outlet water thermometer of heat recovery device T6-heat recovery device inlet water thermometer
具体实施方式Detailed ways
实施例1Example 1
如图1所示，一种测试带热回收功能的冷水机组测试装置，包括与蒸发器4-1相连接的蒸发器侧循环管路、与冷凝器4-2相连接的冷凝器侧循环管路、与热回收器4-3相连接的热回收器侧循环管路、第一兑水循环管路、第二兑水循环管路、第三兑水循环管路。蒸发器4-1与蒸发器侧循环管路、冷凝器4-2与冷凝器侧循环管路、热回收器侧循环管路与热回收器4-3均形成闭式循环。所述蒸发器侧循环管路与冷凝器侧循环管路通过第一兑水循环管路连通，所述热回收器侧循环管路与外部冷源通过第二兑水循环管路连通，冷凝器侧循环管路与外部冷源通过第三兑水循环管路连通。As shown in Figure 1, a test device for testing a chiller with heat recovery function includes an evaporator side circulation pipe connected to the evaporator 4-1 and a condenser side circulation pipe connected to the condenser 4-2. Road, the heat recovery device side circulation pipeline connected with the heat recovery device 4-3, the first water mixing cycle pipeline, the second water mixing cycle pipeline, and the third water mixing cycle pipeline. The evaporator 4-1 and the evaporator side circulation pipeline, the condenser 4-2 and the condenser side circulation pipeline, and the heat recovery side circulation pipeline and the heat recovery device 4-3 all form a closed cycle. The evaporator side circulation pipeline is communicated with the condenser side circulation pipeline through the first water exchange circulation pipeline, the heat recovery side circulation pipeline is communicated with the external cold source through the second water exchange circulation pipeline, and the condenser side circulation pipeline The pipeline is communicated with the external cold source through the third water mixing circulation pipeline.
蒸发器侧循环管路从蒸发器4-1输出端到输入端的方向上依次设置有蒸发器出水温度计T2、冷水泵1-1、冷水阀2-1、冷水流量计3-1、蒸发器进水温度计T1；The evaporator side circulation pipeline is provided with the evaporator outlet water thermometer T2, the cold water pump 1-1, the cold water valve 2-1, the cold water flowmeter 3-1, the evaporator inlet water thermometer T1;
冷凝器侧循环管路从冷凝器4-2输出端到输入端的方向上依次设置有冷凝器出水温度计T4、冷却水泵1-2、冷却水阀2-2、冷却水流量计3-2、冷凝器进水温度计T3；The condenser side circulation pipeline is provided with the condenser outlet water thermometer T4, the cooling water pump 1-2, the cooling water valve 2-2, the cooling water flow meter 3-2, the condenser water flow meter 3-2, Inlet water thermometer T3;
热回收器侧循环管路从热回收器4-3的输出端到输入端的方向上依次设置有热回收器出水温度计T5、热回收水泵1-3、热回收水阀2-3、热回收水流量计3-3、热回收器进水温度计T6。The heat recovery unit side circulation pipeline is sequentially provided with heat recovery unit outlet water thermometer T5, heat recovery water pump 1-3, heat recovery water valve 2-3, heat recovery water Flow meter 3-3, heat recovery device inlet water thermometer T6.
冷水泵1-1、冷却水泵1-2、热回收水泵1-3均为变频水泵。Cold water pump 1-1, cooling water pump 1-2, and heat recovery water pump 1-3 are variable frequency water pumps.
第一兑水循环管路包括第一驱动支路和第一回流管路，第一驱动支路上设置有冷却兑水泵1-4，冷却兑水泵1-4的输入端为第一驱动支路的输入端，第一驱动支路的输入端与冷凝器侧循环管路连接，输出端与蒸发器侧循环管路连接，水通过第一回流管路从蒸发器侧循环管路输出至冷凝器侧循环管路中，第一回流管路与冷凝器侧循环管路连接点相对于第一驱动支路输入端与冷凝器侧循环管路连接点靠近冷凝器4-2的输出端，第一驱动支路输出端与蒸发器侧循环管路连接点相对于第一回流管路与蒸发器侧循环管路连接点靠近蒸发器4-1的输出端。The first water mixing circulation pipeline includes a first driving branch and a first return pipeline. The first driving branch is provided with a cooling water pump 1-4, and the input end of the cooling water pump 1-4 is the input of the first driving branch. The input end of the first drive branch is connected to the condenser side circulation line, the output end is connected to the evaporator side circulation line, and the water is output from the evaporator side circulation line to the condenser side circulation line through the first return line In the pipeline, the connection point between the first return line and the condenser side circulation line is closer to the output end of the condenser 4-2 than the connection point between the input end of the first drive branch and the condenser side circulation line. The connection point between the output end of the circuit and the circulation line on the evaporator side is closer to the output end of the evaporator 4-1 than the connection point between the first return line and the circulation line on the evaporator side.
第二兑水循环管路包括第二驱动支路和第二回流管路，第二驱动支路上设置有第一水泵1-6，第一水泵1-6的输入端为第二驱动支路的输入端。第一水泵1-6的输出端与热回收器侧循环管路连接点设置在热回收水泵1-3入口处的管路上，即热回收器4-3的输出端与热回收水泵1-3之间的管路上。在该实施例中，第一水泵1-6的输出端与热回收器侧循环管路连接点靠近热回收水泵1-3的入口处，第二回流管路与热回收器侧循环管路连接点靠近热回收器4-3的输出端。The second water mixing circulation pipeline includes a second driving branch and a second return pipeline. The second driving branch is provided with a first water pump 1-6, and the input end of the first water pump 1-6 is the input of the second driving branch end. The connection point between the output end of the first water pump 1-6 and the circulation pipeline on the side of the heat recovery pump is set on the pipeline at the inlet of the heat recovery pump 1-3, that is, the output end of the heat recovery device 4-3 and the heat recovery pump 1-3 on the pipeline in between. In this embodiment, the connection point between the output end of the first water pump 1-6 and the circulation pipeline on the heat recovery side is close to the inlet of the heat recovery water pump 1-3, and the second return pipeline is connected with the circulation pipeline on the heat recovery side. point near the output of heat recovery 4-3.
第三兑水循环管路包括第三驱动支路和第三回流管路，第三驱动支路上设置有冷却加水泵1-5，冷却加水泵1-5的输入端为第三驱动支路的输入端，冷却加水泵1-5的输出端与冷凝器侧循环管路连接点设置在热回收水泵1-3入口处的管路上，即冷凝器4-2的输出端与冷却水泵1-2之间的管路上。在该实施例中，冷却加水泵1-5的输出端与冷凝器侧循环管路连接点靠近冷却水泵1-2的入口处，第三回流管路与冷凝器侧循环管路连接点靠近冷凝器4-2的输出端。The third water mixing circulation pipeline includes a third drive branch and a third return pipeline. The third drive branch is provided with a cooling water pump 1-5, and the input end of the cooling water pump 1-5 is the input of the third drive branch The connection point between the output end of the cooling water pump 1-5 and the circulation pipeline on the condenser side is set on the pipeline at the inlet of the heat recovery water pump 1-3, that is, the output end of the condenser 4-2 and the cooling water pump 1-2 are connected. on the pipeline between. In this embodiment, the connection point between the output end of the cooling water pump 1-5 and the condenser side circulation pipeline is close to the inlet of the cooling water pump 1-2, and the connection point between the third return line and the condenser side circulation pipeline is close to the condensation point output of device 4-2.
通过控制第一水泵1-6将冷源的能量传递给进入热回收器4-3的循环热水(高温水)，使循环热水的温度达到所设定的模拟实验的要求；通过热回收水泵1-3，将循环热水送入热回收器4-3模拟热回收循环；蒸发器4-1产生的冷水(低温水)通过冷水泵1-1完成冷水循环，冷凝器4-2产生的冷却水(中温水)通过冷却水泵1-2完成冷却水循环，冷水和冷却水之间设置冷却兑水泵1-4，将部分冷却水兑入冷水循环，维持冷水循环中蒸发器4-1的输入端的水温，冷却水循环中剩余的热量由冷源水平衡。通过第一水泵1-6控制上游冷源输入量对进入热回收器侧循环管路中的水降温，以此模拟进出热回收器4-3热水的流量、温度等参数对带热回收功能的冷水机组进行测试。By controlling the first water pump 1-6, the energy of the cold source is transferred to the circulating hot water (high temperature water) entering the heat recovery device 4-3, so that the temperature of the circulating hot water reaches the set simulation experiment requirements; The water pump 1-3 sends the circulating hot water to the heat recovery device 4-3 to simulate the heat recovery cycle; the cold water (low temperature water) produced by the evaporator 4-1 completes the cold water cycle through the cold water pump 1-1, and the condenser 4-2 produces The cooling water (medium temperature water) is completed by the cooling water pump 1-2, and the cooling water pump 1-4 is set between the cold water and the cooling water, and part of the cooling water is mixed into the cold water circulation to maintain the evaporator 4-1 in the cold water circulation The water temperature at the input end, the remaining heat in the cooling water circulation is balanced by the cold source water. The first water pump 1-6 is used to control the input of the upstream cold source to cool the water entering the circulation pipeline on the side of the heat recovery device, so as to simulate the flow, temperature and other parameters of the hot water entering and leaving the heat recovery device 4-3. The chiller was tested.
通过控制冷水泵1-1、冷却水泵1-2、热回收水泵1-3的输出，分别调节各自循环的水流量，循环水流量分别由冷水流量计3-1、冷却水流量计3-2、热回收水流量计3-3测量；通过控制冷却加水泵1-5所附带的变频器的输出调节冷凝器4-2进水温度，通过控制第一水泵1-6所附带的变频器的输出调节热回收器4-3进水温度，通过控制冷却兑水泵1-4所附带的变频器的输出，调节蒸发器4-1进水温度。By controlling the outputs of the cold water pump 1-1, the cooling water pump 1-2 and the heat recovery water pump 1-3, the circulating water flow is adjusted respectively. The circulating water flow is determined by the cold water flowmeter 3-1 and the cooling water flowmeter 3-2 respectively. , measure the heat recovery water flow meter 3-3; adjust the inlet water temperature of the condenser 4-2 by controlling the output of the frequency converter attached to the cooling water pump 1-5, and control the temperature of the frequency converter attached to the first water pump 1-6. The output adjusts the inlet water temperature of the heat recovery device 4-3, and adjusts the inlet water temperature of the evaporator 4-1 by controlling the output of the frequency converter attached to the cooling water pump 1-4.
实施例2Example 2
如图2所示，一种测试带热回收功能的冷水机组测试装置，包括与蒸发器4-1相连接的蒸发器侧循环管路、与冷凝器4-2相连接的冷凝器侧循环管路、与热回收器4-3相连接的热回收器侧循环管路、第一兑水循环管路、第二兑水循环管路、第三兑水循环管路。蒸发器4-1与蒸发器侧循环管路、冷凝器4-2与冷凝器侧循环管路、热回收器侧循环管路与热回收器4-3均形成闭式循环。所述蒸发器侧循环管路与冷凝器侧循环管路通过第一兑水循环管路连通，所述热回收器侧循环管路与冷凝器侧循环管路通过第二兑水循环管路连通，冷凝器侧循环管路与外部冷源通过第三兑水循环管路连通。As shown in Figure 2, a test device for testing a chiller with heat recovery function includes an evaporator-side circulation pipe connected to the evaporator 4-1 and a condenser-side circulation pipe connected to the condenser 4-2 Road, the heat recovery device side circulation pipeline connected with the heat recovery device 4-3, the first water mixing cycle pipeline, the second water mixing cycle pipeline, and the third water mixing cycle pipeline. The evaporator 4-1 and the evaporator side circulation pipeline, the condenser 4-2 and the condenser side circulation pipeline, and the heat recovery side circulation pipeline and the heat recovery device 4-3 all form a closed cycle. The evaporator side circulation pipeline and the condenser side circulation pipeline are communicated through the first water exchange circulation pipeline, and the heat recovery side circulation pipeline and the condenser side circulation pipeline are communicated through the second water exchange cycle pipeline, and the condensation The device-side circulating pipeline is communicated with the external cold source through the third water mixing circulating pipeline.
蒸发器侧循环管路从蒸发器4-1输出端到输入端的方向上依次设置有蒸发器出水温度计T2、冷水泵1-1、冷水阀2-1、冷水流量计3-1、蒸发器进水温度计T1；The evaporator side circulation pipeline is provided with the evaporator outlet water thermometer T2, the cold water pump 1-1, the cold water valve 2-1, the cold water flowmeter 3-1, the evaporator inlet water thermometer T1;
冷凝器侧循环管路从冷凝器4-2输出端到输入端的方向上依次设置有冷凝器出水温度计T4、冷却水泵1-2、冷却水阀2-2、冷却水流量计3-2、冷凝器进水温度计T3；The condenser side circulation pipeline is provided with the condenser outlet water thermometer T4, the cooling water pump 1-2, the cooling water valve 2-2, the cooling water flow meter 3-2, the condenser water flow meter 3-2, Inlet water thermometer T3;
热回收器侧循环管路从热回收器4-3的输出端到输入端的方向上依次设置有热回收器出水温度计T5、热回收水泵1-3、热回收水阀2-3、热回收水流量计3-3、热回收器进水温度计T6。The heat recovery unit side circulation pipeline is sequentially provided with heat recovery unit outlet water thermometer T5, heat recovery water pump 1-3, heat recovery water valve 2-3, heat recovery water Flow meter 3-3, heat recovery device inlet water thermometer T6.
冷水泵1-1、冷却水泵1-2、热回收水泵1-3均为变频水泵。Cold water pump 1-1, cooling water pump 1-2, and heat recovery water pump 1-3 are variable frequency water pumps.
第一兑水循环管路包括第一驱动支路和第一回流管路，第一驱动支路上设置有冷却兑水泵1-4，冷却兑水泵1-4的输入端为第一驱动支路的输入端，第一驱动支路的输入端与冷凝器侧循环管路连接，输出端与蒸发器侧循环管路连接，水通过第一回流管路从蒸发器侧循环管路输出至冷凝器侧循环管路中，第一回流管路与冷凝器侧循环管路连接点相对于第一驱动支路输入端与冷凝器侧循环管路连接点靠近冷凝器4-2的输出端，第一驱动支路输出端与蒸发器侧循环管路连接点相对于第一回流管路与蒸发器侧循环管路连接点靠近蒸发器4-1的输出端。The first water mixing circulation pipeline includes a first driving branch and a first return pipeline. The first driving branch is provided with a cooling water pump 1-4, and the input end of the cooling water pump 1-4 is the input of the first driving branch. The input end of the first drive branch is connected to the condenser side circulation line, the output end is connected to the evaporator side circulation line, and the water is output from the evaporator side circulation line to the condenser side circulation line through the first return line In the pipeline, the connection point between the first return line and the condenser side circulation line is closer to the output end of the condenser 4-2 than the connection point between the input end of the first drive branch and the condenser side circulation line. The connection point between the output end of the circuit and the circulation line on the evaporator side is closer to the output end of the evaporator 4-1 than the connection point between the first return line and the circulation line on the evaporator side.
第二兑水循环管路包括第二驱动支路和第二回流管路，第二驱动支路上设置有第一水泵1-6，第一水泵1-6的输入端为第二驱动支路的输入端。第二驱动支路的输入端与热回收器侧循环管路连接，输出端与冷凝器侧循环管路连接，水通过第二回流管路从冷凝器侧循环管路输出至热回收器侧循环管路中，第二回流管路与热回收器侧循环管路连接点相对于第二驱动支路输入端与热回收器侧循环管路连接点靠近热回收器4-3的输出端，第二驱动支路输出端与冷凝器侧循环管路连接点相对于第二回流管路与冷凝器侧循环管路连接点靠近相应的冷凝器4-2的输出端。The second water mixing circulation pipeline includes a second driving branch and a second return pipeline. The second driving branch is provided with a first water pump 1-6, and the input end of the first water pump 1-6 is the input of the second driving branch end. The input end of the second drive branch is connected to the circulation line on the heat recovery side, and the output end is connected to the circulation line on the condenser side. In the pipeline, the connection point between the second return line and the circulation line on the side of the heat recovery device is close to the output end of the heat recovery device 4-3 relative to the connection point between the input end of the second drive branch and the circulation line on the side of the heat recovery device. The connection point between the output end of the second drive branch and the condenser side circulation line is closer to the output end of the corresponding condenser 4-2 than the connection point between the second return line and the condenser side circulation line.
第三兑水循环管路包括第三驱动支路和第三回流管路，第三驱动支路上设置有冷却加水泵1-5，冷却加水泵1-5的输入端为第三驱动支路的输入端，冷却加水泵1-5的输出端与冷凝器侧循环管路连接点设置在热回收水泵1-3入口处的管路上，即冷凝器4-2的输出端与冷却水泵1-2之间的管路上。在该实施例中，冷却加水泵1-5的输出端与冷凝器侧循环管路连接点靠近冷却水泵1-2的入口处，第三回流管路与冷凝器侧循环管路连接点靠近冷凝器4-2的输出端。The third water mixing circulation pipeline includes a third drive branch and a third return pipeline. The third drive branch is provided with a cooling water pump 1-5, and the input end of the cooling water pump 1-5 is the input of the third drive branch The connection point between the output end of the cooling water pump 1-5 and the circulation pipeline on the condenser side is set on the pipeline at the inlet of the heat recovery water pump 1-3, that is, the output end of the condenser 4-2 and the cooling water pump 1-2 are connected. on the pipeline between. In this embodiment, the connection point between the output end of the cooling water pump 1-5 and the condenser side circulation pipeline is close to the inlet of the cooling water pump 1-2, and the connection point between the third return line and the condenser side circulation pipeline is close to the condensation point output of device 4-2.
本实施例通过第一水泵1-6将热回收器4-3的出水与冷凝器4-2的出水进行换热，达到能量回收的目的，可以避免实施例1中由于热回收器4-3和冷凝器4-2能量分配不同对整个装置运行的影响。In this embodiment, the first water pump 1-6 exchanges heat between the effluent water of the heat recovery device 4-3 and the effluent water of the condenser 4-2, so as to achieve the purpose of energy recovery. The effect of different energy distribution with condenser 4-2 on the operation of the whole device.
实施例3Example 3
如图3所示，一种测试带热回收功能的冷水机组测试装置，包括与蒸发器4-1相连接的蒸发器侧循环管路、与冷凝器4-2相连接的冷凝器侧循环管路、与热回收器4-3相连接的热回收器侧循环管路、第一兑水循环管路、第二兑水循环管路、第三兑水循环管路。蒸发器4-1与蒸发器侧循环管路、冷凝器4-2与冷凝器侧循环管路、热回收器侧循环管路与热回收器4-3均形成闭式循环。所述蒸发器侧循环管路与冷凝器侧循环管路通过第一兑水循环管路连通，所述热回收器侧循环管路与蒸发器侧循环管路通过第二兑水循环管路连通，冷凝器侧循环管路与外部冷源通过第三兑水循环管路连通。As shown in Figure 3, a test device for testing a chiller with heat recovery function includes an evaporator-side circulation pipe connected to the evaporator 4-1 and a condenser-side circulation pipe connected to the condenser 4-2 Road, the heat recovery device side circulation pipeline connected with the heat recovery device 4-3, the first water mixing cycle pipeline, the second water mixing cycle pipeline, and the third water mixing cycle pipeline. The evaporator 4-1 and the evaporator side circulation pipeline, the condenser 4-2 and the condenser side circulation pipeline, and the heat recovery side circulation pipeline and the heat recovery device 4-3 all form a closed cycle. The evaporator side circulation pipeline is communicated with the condenser side circulation pipeline through the first water exchange circulation pipeline, and the heat recovery device side circulation pipeline and the evaporator side circulation pipeline are communicated through the second water exchange cycle pipeline, and the condensation The device-side circulating pipeline is communicated with the external cold source through the third water mixing circulating pipeline.
蒸发器侧循环管路从蒸发器4-1输出端到输入端的方向上依次设置有蒸发器出水温度计T2、冷水泵1-1、冷水阀2-1、冷水流量计3-1、蒸发器进水温度计T1；The evaporator side circulation pipeline is provided with the evaporator outlet water thermometer T2, the cold water pump 1-1, the cold water valve 2-1, the cold water flowmeter 3-1, the evaporator inlet water thermometer T1;
冷凝器侧循环管路从冷凝器4-2输出端到输入端的方向上依次设置有冷凝器出水温度计T4、冷却水泵1-2、冷却水阀2-2、冷却水流量计3-2、冷凝器进水温度计T3；The condenser side circulation pipeline is provided with the condenser outlet water thermometer T4, the cooling water pump 1-2, the cooling water valve 2-2, the cooling water flow meter 3-2, the condenser water flow meter 3-2, Inlet water thermometer T3;
热回收器侧循环管路从热回收器4-3的输出端到输入端的方向上依次设置有热回收器出水温度计T5、热回收水泵1-3、热回收水阀2-3、热回收水流量计3-3、热回收器进水温度计T6。The heat recovery unit side circulation pipeline is sequentially provided with heat recovery unit outlet water thermometer T5, heat recovery water pump 1-3, heat recovery water valve 2-3, heat recovery water Flow meter 3-3, heat recovery device inlet water thermometer T6.
冷水泵1-1、冷却水泵1-2、热回收水泵1-3均为变频水泵。Cold water pump 1-1, cooling water pump 1-2, and heat recovery water pump 1-3 are variable frequency water pumps.
第一兑水循环管路包括第一驱动支路和第一回流管路，第一驱动支路上设置有冷却兑水泵1-4，冷却兑水泵1-4的输入端为第一驱动支路的输入端，第一驱动支路的输入端与冷凝器侧循环管路连接，输出端与蒸发器侧循环管路连接，水通过第一回流管路从蒸发器侧循环管路输出至冷凝器侧循环管路中，第一回流管路与冷凝器侧循环管路连接点相对于第一驱动支路输入端与冷凝器侧循环管路连接点靠近冷凝器4-2的输出端，第一驱动支路输出端与蒸发器侧循环管路连接点相对于第一回流管路与蒸发器侧循环管路连接点靠近蒸发器4-1的输出端。The first water mixing circulation pipeline includes a first driving branch and a first return pipeline. The first driving branch is provided with a cooling water pump 1-4, and the input end of the cooling water pump 1-4 is the input of the first driving branch. The input end of the first drive branch is connected to the condenser side circulation line, the output end is connected to the evaporator side circulation line, and the water is output from the evaporator side circulation line to the condenser side circulation line through the first return line In the pipeline, the connection point between the first return line and the condenser side circulation line is closer to the output end of the condenser 4-2 than the connection point between the input end of the first drive branch and the condenser side circulation line. The connection point between the output end of the circuit and the circulation line on the evaporator side is closer to the output end of the evaporator 4-1 than the connection point between the first return line and the circulation line on the evaporator side.
第二兑水循环管路包括第二驱动支路和第二回流管路，第二驱动支路上设置有第一水泵1-6，第一水泵1-6的输入端为第二驱动支路的输入端。第二驱动支路的输入端与热回收器侧循环管路连接，输出端与蒸发器侧循环管路连接，水通过第二回流管路从蒸发器侧循环管路输出至热回收器侧循环管路中，第二回流管路与热回收器侧循环管路连接点相对于第二驱动支路输入端与热回收器侧循环管路连接点靠近热回收器4-3的输出端，第二驱动支路输出端与蒸发器侧循环管路连接点相对于第二回流管路与蒸发器侧循环管路连接点靠近蒸发器4-1的输出端。The second water mixing circulation pipeline includes a second driving branch and a second return pipeline. The second driving branch is provided with a first water pump 1-6, and the input end of the first water pump 1-6 is the input of the second driving branch end. The input end of the second drive branch is connected to the circulation line on the heat recovery side, and the output end is connected to the circulation line on the evaporator side. Water is output from the circulation line on the evaporator side to the heat recovery side circulation line through the second return line In the pipeline, the connection point between the second return line and the circulation line on the side of the heat recovery device is close to the output end of the heat recovery device 4-3 relative to the connection point between the input end of the second drive branch and the circulation line on the side of the heat recovery device. The connection point between the output end of the second drive branch and the evaporator side circulation line is closer to the output end of the evaporator 4-1 than the connection point between the second return line and the evaporator side circulation line.
第三兑水循环管路包括第三驱动支路和第三回流管路，第三驱动支路上设置有冷却加水泵1-5，冷却加水泵1-5的输入端为第三驱动支路的输入端，冷却加水泵1-5的输出端与冷凝器侧循环管路连接点设置在热回收水泵1-3入口处的管路上，即冷凝器4-2的输出端与冷却水泵1-2之间的管路上。在该实施例中，冷却加水泵1-5的输出端与冷凝器侧循环管路连接点靠近冷却水泵1-2的入口处，第三回流管路与冷凝器侧循环管路连接点靠近冷凝器4-2的输出端。The third water mixing circulation pipeline includes a third drive branch and a third return pipeline. The third drive branch is provided with a cooling water pump 1-5, and the input end of the cooling water pump 1-5 is the input of the third drive branch The connection point between the output end of the cooling water pump 1-5 and the circulation pipeline on the condenser side is set on the pipeline at the inlet of the heat recovery water pump 1-3, that is, the output end of the condenser 4-2 and the cooling water pump 1-2 are connected. on the pipeline between. In this embodiment, the connection point between the output end of the cooling water pump 1-5 and the condenser side circulation pipeline is close to the inlet of the cooling water pump 1-2, and the connection point between the third return line and the condenser side circulation pipeline is close to the condensation point output of device 4-2.
本实施例通过第一水泵1-6将将热回收器4-3的出水和蒸发器4-1出水进行换热，达到能量回收的目的，同时由于热回收器4-3出水和蒸发器4-1出水之间是整个装置温差最大之处，同样的换热量只需要更小的第一水泵1-6运行流量，降低了整体装置运行能耗。In this embodiment, the first water pump 1-6 exchanges heat between the effluent from the heat recovery device 4-3 and the effluent from the evaporator 4-1 to achieve the purpose of energy recovery. The temperature difference between -1 and the effluent is the largest in the entire device. The same heat exchange only requires a smaller operating flow of the first water pump 1-6, which reduces the overall energy consumption of the device.
以上仅为本发明创造的较佳实施例而已，并不用以限制本发明创造，凡在本发明创造的精神和原则之内所作的任何修改、等同替换和改进等，均应包含在本发明创造的保护范围之内。The above are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention shall be included in the present invention. within the scope of protection.
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