CN201772579U - A kind of indirect cold storage water cold storage air conditioner - Google Patents
A kind of indirect cold storage water cold storage air conditioner Download PDFInfo
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- 238000001816 cooling Methods 0.000 claims description 41
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- 238000004378 air conditioning Methods 0.000 abstract description 14
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- 238000005057 refrigeration Methods 0.000 description 2
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Abstract
Description
技术领域technical field
本实用新型涉及空调制冷技术领域，特别是间接蓄冷的水蓄冷空调装置。The utility model relates to the technical field of air-conditioning and refrigeration, in particular to an indirect cold-storage water-storage air-conditioning device.
背景技术Background technique
随着经济的快速发展，我国电力需求量越来越大，电力供应高峰不足而低谷过剩的矛盾日益突出。目前现代城市的用电状况是，进入夏季电力负荷急剧增长，这是由于大量空调系统的运行占用了大量负荷。供电公司为了调节用电，在很多地区已经实行峰谷分时电价，电力部门运用价格杠杆引导用户合理用电、削峰填谷。蓄冷空调技术作为一种新型冷源形式，利用夜间电网低谷电蓄冷，在电网峰电时融冰供冷，移峰填谷，可以有效解决空调用电对电网负荷的冲击。同时蓄冷技术有利于降低系统的运行费用；还有助于调节送风温差，是一举多得的节能好举措。With the rapid development of the economy, my country's demand for electricity is increasing, and the contradiction of insufficient electricity supply at peaks and excess at valleys is becoming increasingly prominent. The current situation of electricity consumption in modern cities is that the electricity load increases sharply in summer, which is due to the operation of a large number of air-conditioning systems taking up a large amount of load. In order to regulate electricity consumption, power supply companies have implemented peak and valley time-of-use electricity prices in many areas, and the power sector uses price leverage to guide users to use electricity reasonably and cut peaks to fill valleys. As a new form of cold source, cold storage air-conditioning technology utilizes low-valley power grid electricity storage at night, melts ice for cooling when the grid power peaks, and shifts peaks to fill valleys, which can effectively solve the impact of air-conditioning power consumption on the grid load. At the same time, the cold storage technology is beneficial to reduce the operating cost of the system; it also helps to adjust the temperature difference of the air supply, which is a good measure of energy saving that kills multiple birds with one stone.
现有技术中，利用水的显热进行冷量储存的分层式水蓄冷技术已经比较成熟，国内有了许多实际运行的工程。例如中国专利号为200710028741.0的“直接供冷水蓄冷空调系统及其运行方法”和中国专利号为200520106645.X的“直接蓄冷间接放冷的水蓄冷系统”等，都是涉及水蓄冷的新技术。水蓄冷系统由于设计思路简单，可使用常规冷机，可利用消防水池，初投资较低，可用于现有常规空调系统的扩容或改造，故目前水蓄冷系统应用广泛。In the prior art, the stratified water cold storage technology that uses the sensible heat of water to store cold energy is relatively mature, and there are many projects in actual operation in China. For example, the Chinese Patent No. 200710028741.0 of "Direct Cooling Water Storage Air-Conditioning System and Its Operation Method" and the Chinese Patent No. 200520106645.X of "Water Cooling System with Direct Cold Storage and Indirect Release of Cooling" are all new technologies involving water cold storage. Due to the simple design concept, the water storage system can use conventional chillers and fire pools, and the initial investment is low. It can be used for expansion or transformation of existing conventional air conditioning systems. Therefore, water storage systems are widely used at present.
目前，水蓄冷系统一般有两种。一种是冷机和蓄冷槽都在板式换热器的一次侧，二次侧是冷冻水循环系统。它是通过板式换热器与二次用户侧隔开，一次侧是开式系统，二次侧是闭式系统，其优点是整个系统压力较小，安全稳定；缺点是板式换热器面积大，投资高，而且冷机直供时，需要通过板换，有传热损失，所以冷机的工作效率比较低，系统的经济性比较差。第二种水蓄冷系统是目前工程应用较多的一种系统，它是所谓半开半闭式的系统。冷机和蓄冷槽用电动阀门与二次侧隔开。当冷机直供时在二次用户侧、冷机蓄冷时在一次侧，蓄冷水槽通过板式换热器与二次用户侧交换冷量进行放冷。其优点是冷机直供时和蓄冷时没有板换损失，效率高；但是由于冷机是用阀门把二次侧和一次侧隔开的，工况的改变完全靠阀门转换，所以部分工况转换时阀门的一端是开式系统(蓄冷槽侧)、另一端是闭式系统，这两侧会有压力差，而且楼越高，压差越大，非常容易造成阀门内漏和电动执行机构损坏，严重的时候空调系统的水会全部泄到机房里来。At present, there are generally two types of water storage systems. One is that both the chiller and cold storage tank are on the primary side of the plate heat exchanger, and the secondary side is the chilled water circulation system. It is separated from the secondary user side by a plate heat exchanger. The primary side is an open system, and the secondary side is a closed system. The advantage is that the pressure of the entire system is small, safe and stable; the disadvantage is that the area of the plate heat exchanger is large , The investment is high, and when the chiller is directly supplied, it needs to be replaced through the plate, and there is heat transfer loss, so the working efficiency of the chiller is relatively low, and the economy of the system is relatively poor. The second type of water storage system is a system with more engineering applications at present, and it is a so-called half-open and half-closed system. The cold machine and cold storage tank are separated from the secondary side by electric valves. When the chiller is directly supplied by the secondary user side, and when the chiller is storing cold, it is on the primary side, and the cold storage water tank exchanges cooling capacity with the secondary user side through a plate heat exchanger for cooling. Its advantage is that there is no plate replacement loss when the chiller is directly supplied and cold storage, and the efficiency is high; but because the chiller uses a valve to separate the secondary side from the primary side, the change of working conditions depends entirely on the switching of the valve, so some working conditions When switching, one end of the valve is an open system (the cold storage tank side), and the other end is a closed system. There will be a pressure difference between the two sides, and the higher the building, the greater the pressure difference, which is very likely to cause internal leakage of the valve and electric actuators. In severe cases, all the water in the air conditioning system will leak into the machine room.
发明内容Contents of the invention
针对上述现有技术中存在的不足，本实用新型的目的是提供一种间接蓄冷的水蓄冷空调装置。它采用两个相互独立的系统，使制冷机既可以直供末端系统，又可以通过板式换热器来蓄冷，既避免了压差问题，又解决了制冷机直供时换热损失的问题，非常安全和稳定。Aiming at the deficiencies in the above-mentioned prior art, the purpose of this utility model is to provide a water-cooled storage air-conditioning device for indirect cold storage. It adopts two mutually independent systems, so that the refrigerator can directly supply the terminal system and store cold through the plate heat exchanger, which not only avoids the problem of pressure difference, but also solves the problem of heat exchange loss when the refrigerator is directly supplied. Very safe and stable.
为了达到上述发明目的，本实用新型的技术方案以如下三种方式实现：In order to achieve the above-mentioned purpose of the invention, the technical solution of the utility model is realized in the following three ways:
方案一：主机在蓄冷水槽下游的串联系统Option 1: A series system in which the main engine is downstream of the cold storage tank
一种间接蓄冷的水蓄冷空调装置，它包括开式的蓄放冷回路和闭式的循环冷冻水回路。其结构特点是，所述蓄放冷回路由蓄冷水槽、电动开关阀一、电动开关阀二、电动开关阀三、电动开关阀四、蓄放冷水泵和板式换热器的冷槽侧管路组成。蓄冷水槽中的上布水器分别与电动开关阀一和电动开关阀二相连接，蓄冷水槽中的下布水器分别与电动开关阀三和电动开关阀四相连接。电动开关阀二和电动开关阀四的另一侧管路相接并与蓄放冷水泵的入口相连，蓄放冷水泵的出口与板式换热器的冷槽侧管路入口相连，电动开关阀一和电动开关阀三的另一侧管路相接并与板式换热器的冷槽侧管路出口相连。所述循环冷冻水回路由板式换热器的冷机侧管路、电动开关阀五、电动开关阀七、电动开关阀八、电动开关阀九、电动调节阀、制冷机和循环冷冻水变频泵组成。板式换热器的冷机侧管路出水口依次经电动开关阀五、循环冷冻水变频泵、制冷机、电动开关阀七和电动开关阀八连接到板式换热器的冷机侧管路进水口。循环冷冻水变频泵的进口另经电动调节阀连接到电动开关阀七和电动开关阀八的接点，制冷机的蒸发器出口另连接用户侧供水，用户侧回水经电动开关阀九连接到板式换热器的冷机侧管路进水口。The utility model relates to an indirect cold storage water cold storage air conditioner, which includes an open cold storage and discharge circuit and a closed circulating frozen water circuit. Its structural feature is that the cold storage and discharge circuit is composed of a cold storage tank, an electric switch valve 1, an electric switch valve 2, an
方案2：主机在蓄冷水槽上游的串联系统Scheme 2: A series system in which the host is upstream of the cold storage tank
一种间接蓄冷的水蓄冷空调装置，它包括开式的蓄放冷回路和闭式的循环冷冻水回路。其结构特点是，所述蓄放冷回路由蓄冷水槽、电动开关阀一、电动开关阀二、电动开关阀三、电动开关阀四、蓄放冷水泵和板式换热器的冷槽侧管路组成。蓄冷水槽中的上布水器分别与电动开关阀一和电动开关阀二相连接，蓄冷水槽中的下布水器分别与电动开关阀三和电动开关阀四相连接。电动开关阀二和电动开关阀四的另一侧管路相接并与蓄放冷水泵的入口相连，蓄放冷水泵的出口与板式换热器的冷槽侧管路入口相连，电动开关阀一和电动开关阀三的另一侧管路相接并与板式换热器的冷槽侧管路出口相连。所述循环冷冻水回路由板式换热器的冷机侧管路、电动开关阀五、电动开关阀七、电动开关阀八、电动开关阀九、电动调节阀、制冷机和循环冷冻水变频泵组成。板式换热器的冷机侧管路出水口依次经电动开关阀八、电动开关阀七、循环冷冻水变频泵、制冷机和电动开关阀五连接到板式换热器的冷机侧管路进水口。制冷机的出口另经电动调节阀连接到电动开关阀七和电动开关阀八的接点，板式换热器的冷机侧管路出水口另经电动开关阀九连接用户侧供水，用户侧回水与循环冷冻水变频泵的进口相连。The utility model relates to an indirect cold storage water cold storage air conditioner, which includes an open cold storage and discharge circuit and a closed circulating frozen water circuit. Its structural feature is that the cold storage and discharge circuit is composed of a cold storage tank, an electric switch valve 1, an electric switch valve 2, an
方案3：主机与蓄冷水槽并联的系统Scheme 3: A system in which the main engine is connected in parallel with the cold storage tank
一种间接蓄冷的水蓄冷空调装置，它包括开式的蓄放冷回路和闭式的循环冷冻水回路。其结构特点是，所述蓄放冷回路由蓄冷水槽、电动开关阀一、电动开关阀二、电动开关阀三、电动开关阀四、蓄放冷水泵和板式换热器的冷槽侧管路组成。蓄冷水槽中的上布水器分别与电动开关阀一和电动开关阀二相连接，蓄冷水槽中的下布水器分别与电动开关阀三和电动开关阀四相连接。电动开关阀二和电动开关阀四的另一侧管路相接并与蓄放冷水泵的入口相连，蓄放冷水泵的出口与板式换热器的冷槽侧管路入口相连，电动开关阀一和电动开关阀三的另一侧管路相接并与板式换热器的冷槽侧管路出口相连。所述循环冷冻水回路由板式换热器的冷机侧管路、电动开关阀五、电动开关阀七、电动开关阀八、电动开关阀九、电动调节阀、制冷机、循环冷冻水变频泵和二次侧放冷变频泵组成。板式换热器的冷机侧管路出水口依次经电动开关阀七、循环冷冻水变频泵、制冷机和电动开关阀五连接到板式换热器的冷机侧管路进水口。用户侧回水与循环冷冻水变频泵的进口相连，用户侧回水另经二次侧放冷变频泵和电动开关阀八连接到板式换热器的冷机侧管路进水口。板式换热器的冷机侧管路出水口经电动调节阀与制冷机的出口相连，并经电动开关阀九连接用户侧供水。The utility model relates to an indirect cold storage water cold storage air conditioner, which includes an open cold storage and discharge circuit and a closed circulating frozen water circuit. Its structural feature is that the cold storage and discharge circuit is composed of a cold storage tank, an electric switch valve 1, an electric switch valve 2, an
本实用新型由于采用了上述三种结构方式，相当于在现有常规空调系统上并联一个开式的蓄放冷回路，通过阀门调节可以完成冷机蓄冷、冷槽放冷、冷机单供、联合供冷、边蓄变供等工况。本实用新型中的制冷机直供时没有板式换热器的换热损失，制冷机蓄冷时通过板式换热器间接蓄冷，有部分板换损失，但是整个装置运行稳定可靠。Because the utility model adopts the above three structural modes, it is equivalent to connecting an open cold storage and discharge circuit in parallel on the existing conventional air-conditioning system. Through the valve adjustment, it can complete the cold storage of the cold machine, the cooling of the cold tank, the single supply of the cold machine, Combined cooling, side storage and transformation for supply and other working conditions. When the refrigerator in the utility model is directly supplied, there is no heat exchange loss of the plate heat exchanger. When the refrigerator stores cold through the plate heat exchanger, there is some plate exchange loss, but the operation of the whole device is stable and reliable.
下面结合附图和具体实施方式对本实用新型作进一步说明。Below in conjunction with accompanying drawing and specific embodiment, the utility model is further described.
附图说明Description of drawings
图1是本实用新型实施例一的结构示意图；Fig. 1 is the structural representation of the utility model embodiment one;
图2是本实用新型实施例二的结构示意图；Fig. 2 is the structural representation of the second embodiment of the utility model;
图3是本实用新型实施例三的结构示意图。Fig. 3 is a schematic structural view of
具体实施方式Detailed ways
实施例一Embodiment one
参看图1，本实用新型的主机在蓄冷水槽下游的串联系统包括：包括开式的蓄放冷回路和闭式的循环冷冻水回路。蓄放冷回路由蓄冷水槽1、电动开关阀一V1、电动开关阀二V2、电动开关阀三V3、电动开关阀四V4、蓄放冷水泵P1和板式换热器3的冷槽侧管路组成。蓄冷水槽1中的上布水器分别与电动开关阀一V1和电动开关阀二V2相连接，蓄冷水槽1中的下布水器分别与电动开关阀三V3和电动开关阀四V4相连接。电动开关阀二V2和电动开关阀四V4的另一侧管路相接并与蓄放冷水泵P1的入口相连，蓄放冷水泵P1的出口与板式换热器3的冷槽侧管路入口相连，电动开关阀一V1和电动开关阀三V3的另一侧管路相接并与板式换热器3的冷槽侧管路出口相连。循环冷冻水回路由板式换热器3的冷机侧管路、电动开关阀五V5、电动开关阀七V7、电动开关阀八V8、电动开关阀九V9、电动调节阀V6、制冷机4和循环冷冻水变频泵P2组成。板式换热器3的冷机侧管路出水口依次经电动开关阀五V5、循环冷冻水变频泵P2、制冷机4、电动开关阀七V7和电动开关阀八V8连接到板式换热器3的冷机侧管路进水口。循环冷冻水变频泵P2的进口另经电动调节阀V6连接到电动开关阀七V7和电动开关阀八V8的接点，制冷机4的蒸发器出口另连接用户侧供水，用户侧回水经电动开关阀九V9连接到板式换热器3的冷机侧管路进水口。Referring to Fig. 1, the series system of the host in the downstream of the cold storage water tank of the utility model includes: an open cold storage and discharge circuit and a closed circulating chilled water circuit. The cold storage and discharge circuit consists of cold storage tank 1, electric switch valve 1 V1, electric switch valve 2 V2,
本实用新型系统工作时，蓄冷工况下设计制冷机4出水温度为3℃、制冷机进水温度为8℃，蓄冷水槽1进水温度为4℃、蓄冷水槽1出水温度为11℃。放冷工况下设计制冷机4出水温度为7℃、制冷机4进水温度为12℃，蓄冷水槽1进水温度为11℃、蓄冷水槽1出水温度为4℃。这几个参数也可根据实际系统设计进行调整。When the system of the utility model is working, the water outlet temperature of the refrigerator 4 is designed to be 3°C, the inlet water temperature of the refrigerator is 8°C, the inlet water temperature of the cold storage tank 1 is 4°C, and the outlet water temperature of the cold storage tank 1 is 11°C under cold storage conditions. Under the cooling condition, the outlet water temperature of refrigerator 4 is designed to be 7°C, the inlet water temperature of refrigerator 4 is 12°C, the inlet water temperature of cold storage tank 1 is 11°C, and the outlet water temperature of cold storage tank 1 is 4°C. These parameters can also be adjusted according to the actual system design.
主机在蓄冷水槽1下游的串联系统共有四种运行工况，由智能控制系统进行整机控制，具体运行控制策略如下：There are four operating conditions in the series system of the main engine downstream of the cold storage water tank 1, and the whole machine is controlled by the intelligent control system. The specific operation control strategy is as follows:
模式1：制冷机蓄冷工况。Mode 1: Cooling storage working condition of the refrigerator.
电动开关阀一V1、电动开关阀三V3关闭，电动开关阀二V2、电动开关阀四V4开启，蓄放冷水泵P1开启。蓄冷水槽1上布水器经蓄放冷水泵P1与板式换热器3的水槽侧进水口相连，蓄冷水槽1下布水器与板式换热器3的水槽侧出水口相连，以达到蓄冷水槽1底部进4℃冷水，蓄冷水槽1上部出11℃温水的效果，在蓄放冷水泵P1循环下不断给蓄冷水槽1充冷.电动开关阀五V5、电动开关阀七V7、电动开关阀八V8开启，制冷机4供给3℃的冷水经过电动开关阀七V7、电动开关阀八V8，板式换热器3的冷机侧进出口后变成8℃，再经过电动开关阀五V5，循环冷冻水变频泵P2回到制冷机4。电动调节阀V6关闭，电动开关阀九V9关闭，不给用户供冷。Electric on-off valve one V1, electric on-off valve three V3 are closed, electric on-off valve two V2, electric on-off valve four V4 are turned on, and storage and discharge cold water pump P1 is turned on. The upper water distributor of cold storage tank 1 is connected to the side water inlet of
模式2：冷槽放冷工况。Mode 2: Cooling condition in the cold tank.
电动开关阀二V2、电动开关阀四V4关闭，电动开关阀一V1、电动开关阀三V3开启，蓄放冷水泵P1开启.蓄冷水槽1下布水器经蓄放冷水泵P1与板式换热器3的水槽侧进水口相连，蓄冷水槽1上布水器与板式换热器3的水槽侧出水口相连，以达到蓄冷水槽1底部供给4℃冷水，蓄冷水槽1上部回收11℃温水的效果，在蓄放冷水泵P1循环下不断取用蓄冷水槽1冷量。制冷机4关闭，从板式换热器3的冷机侧出口送出7℃冷冻水，经过电动开关阀五V5，循环冷冻水变频泵P2，停机的制冷机4，供给用户末端，末端的12℃回水经过电动开关阀九V9，回到板式换热器3的冷机侧进口。电动开关阀七V7、电动开关阀八V8关闭，电动调节阀V6关闭。Electric switching valve 2 V2, electric switching valve 4 V4 are closed, electric switching valve 1 V1,
模式3：冷机直供工况。Mode 3: The working condition of direct supply from the cold machine.
电动开关阀一V1、电动开关阀二V2、电动开关阀三V3、电动开关阀四V4关闭，蓄放冷水泵P1关闭，蓄冷回路停止运行。制冷机4供给7℃的冷水直接送到用户末端，12℃的回水经过电动开关阀九V9，电动开关阀八V8，全开的电动调节阀V6，最后经过循环冷冻水变频泵P2回到制冷机4。电动开关阀五V5、电动开关阀七V7关闭，制冷机4直供时不经过板式换热器3，减小了阻力损失，保障了高效运行。Electric on-off valve one V1, electric on-off valve two V2, electric on-off valve three V3, electric on-off valve four V4 are closed, the storage and discharge cold water pump P1 is closed, and the cold storage circuit stops running. Refrigerator 4 supplies 7°C cold water directly to the user end, 12°C return water passes through electric on-off valve nine V9, electric on-off valve eight V8, fully open electric regulating valve V6, and finally returns to Refrigerator 4. Electric on-off valve five V5 and electric on-off valve seven V7 are closed, and the direct supply of refrigerator 4 does not pass through
模式4：联合供冷工况。Mode 4: Combined cooling condition.
电动开关阀二V2、电动开关阀四V4关闭，电动开关阀一V1、电动开关阀三V3开启，蓄放冷水泵P1开启。蓄冷水槽1下布水器经蓄放冷水泵P1与板式换热器3的水槽侧进水口相连，蓄冷水槽1上布水器与板式换热器3的水槽侧出水口相连，在蓄冷水槽1供水温度逐渐升高的情况下，蓄冷水槽1底部供给大于4℃的冷水，蓄冷水槽1上部回收小于12℃温水，在蓄放冷水泵P1循环下取用蓄冷水槽1最后残余的冷量由于蓄冷水槽1供水温度升高，板式换热器3的制冷机4侧出口温度也将高于7℃，此时开启制冷机4，从板式换热器3出来的冷水经电动开关阀V5，循环冷冻水变频泵P2，进入制冷机4，经过二次降温后供出小于等于7℃的冷冻水，与过电动调节阀V6，电动开关阀七V7的旁通水混合后，供给用户7℃的冷冻水。用户12℃的回水，经过电动开关阀九V9回到板式换热器3的制冷机4侧进口。电动调节阀V6调节旁通流量，电动开关阀八V8关闭。Electric on-off valve two V2, electric on-off valve four V4 are closed, electric on-off valve one V1, electric on-off valve three V3 are turned on, and storage and discharge cold water pump P1 is turned on. The lower water distributor of cold storage tank 1 is connected to the water tank side water inlet of
上述四种工况的运行控制策略如表1所示。The operation control strategies of the above four working conditions are shown in Table 1.
表1Table 1
实施例二Embodiment two
参看图2，本实用新型的主机在蓄冷槽上游的串联系统包括：Referring to Fig. 2, the series system of the host in the upstream of the cold storage tank of the utility model includes:
开式的蓄放冷回路和闭式的循环冷冻水回路。蓄放冷回路与实施例一结构相同。循环冷冻水回路由板式换热器3的冷机侧管路、电动开关阀五V5、电动开关阀七V7、电动开关阀八V8、电动开关阀九V9、电动调节阀V6、制冷机4和循环冷冻水变频泵P2组成。板式换热器3的冷机侧管路出水口依次经电动开关阀八V8、电动开关阀七V7、循环冷冻水变频泵P2、制冷机4和电动开关阀五V5连接到板式换热器3的冷机侧管路进水口。制冷机4的出口另经电动调节阀V6连接到电动开关阀七V7和电动开关阀八V8的接点，板式换热器3的冷机侧管路出水口另经电动开关阀九V9连接用户侧供水，用户侧回水与循环冷冻水变频泵P2的进口相连。Open storage cold circuit and closed circulating chilled water circuit. The storage and release cold circuit has the same structure as that of the first embodiment. The circulating chilled water circuit is composed of the cold machine side pipeline of
本实用新型系统工作时，蓄冷工况下设计制冷机4出水温度3℃、制冷机4进水温度8℃，蓄冷水槽1进水温度4℃、蓄冷水槽1出水温度11℃。放冷工况下设计制冷机4出水温度7℃、制冷机4进水温度12℃，蓄冷水槽1进水温度11℃、蓄冷水槽1出水温度4℃。这几个参数也可根据实际系统设计进行调整。When the system of the utility model is working, the water outlet temperature of refrigerator 4 is designed to be 3°C, the inlet water temperature of refrigerator 4 is 8°C, the inlet water temperature of cold storage tank 1 is 4°C, and the outlet water temperature of cold storage tank 1 is 11°C under cold storage conditions. Under the cooling condition, the outlet water temperature of refrigerator 4 is designed to be 7°C, the inlet water temperature of refrigerator 4 is 12°C, the inlet water temperature of cold storage tank 1 is 11°C, and the outlet water temperature of cold storage tank 1 is 4°C. These parameters can also be adjusted according to the actual system design.
主机在蓄冷水槽1上游的串联系统共有四种运行工况，由智能控制系统进行整机控制，具体运行控制策略如下：There are four operating conditions in the series system upstream of the main engine in the cold storage tank 1, and the whole machine is controlled by the intelligent control system. The specific operation control strategy is as follows:
模式1：冷机蓄冷工况。Mode 1: Cooling machine cold storage working condition.
电动开关阀一V1、电动开关阀三V3关闭，电动开关阀二V2、电动开关阀四V4开启，蓄放冷水泵P1开启。蓄冷水槽1上布水器经蓄放冷水泵P1与板式换热器3的水槽侧进水口相连，蓄冷水槽1下布水器与板式换热器3的水槽侧出水口相连，以达到蓄冷水槽1底部进4℃冷水，蓄冷水槽1上部出11℃温水的效果，在蓄放冷水泵P1循环下不断给蓄冷水槽1充冷。电动开关阀五V5、电动开关阀七V7、电动开关阀八V8开启，制冷机4供给3℃的冷水经过电动开关阀五V5，进入板式换热器3的冷机侧后变成8℃，再经过电动开关阀八V8、电动开关阀七V7，循环冷冻水变频泵P2回到制冷机4。电动调节阀V6关闭，电动开关阀九V9关闭，不给用户供冷。Electric on-off valve one V1, electric on-off valve three V3 are closed, electric on-off valve two V2, electric on-off valve four V4 are turned on, and storage and discharge cold water pump P1 is turned on. The upper water distributor of cold storage tank 1 is connected to the side water inlet of
模式2：冷槽放冷工况。Mode 2: Cooling condition in the cold tank.
电动开关阀二V2、电动开关阀四V4关闭，电动开关阀一V1、电动开关阀三V3开启，蓄放冷水泵P1开启.蓄冷水槽1下布水器经蓄放冷水泵P1与板式换热器3的水槽侧进水口相连，蓄冷水槽1上布水器与板式换热器3的水槽侧出水口相连，以达到蓄冷水槽1底部供给4℃冷水，蓄冷水槽1上部回收11℃温水的效果，在蓄放冷水泵P1循环下不断取用蓄冷水槽1冷量。制冷机4关闭，从板式换热器3的冷机侧出口送出7℃冷冻水，经过电动开关阀九V9，供给用户末端，用户末端的12℃回水经过循环冷冻水变频泵P2，停机的制冷机4，电动开关阀五V5，回到板式换热器3的冷机侧进口。电动开关阀七V7、电动开关阀八V8关闭，电动调节阀V6关闭。Electric switching valve 2 V2, electric switching valve 4 V4 are closed, electric switching valve 1 V1,
模式3：冷机直供工况。Mode 3: The working condition of direct supply from the cold machine.
电动开关阀一V1、电动开关阀二V2、电动开关阀三V3、电动开关阀四V4关闭，蓄放冷水泵P1关闭，蓄冷回路停止运行.制冷机4供给7℃的冷水经过全开的电动调节阀V6，电动开关阀八V8、电动开关阀九V9，送到用户末端，12℃的回水经过循环冷冻水变频泵P2回到制冷机4。电动开关阀五V5、电动开关阀七V7关闭，制冷机4直供时不经过板式换热器3，减小了阻力损失，保障了高效运行。模式4：边蓄变供工况。Electric on-off valve 1 V1, electric on-off valve 2 V2, electric on-off
电动开关阀一V1、电动开关阀三V3关闭，电动开关阀二V2、电动开关阀四V4开启，蓄放冷水泵P1开启。蓄冷水槽1上布水器经蓄放冷水泵P1与板式换热器3的水槽侧进水口相连，蓄冷水槽1下布水器与板式换热器3的水槽侧出水口相连，以达到蓄冷水槽1底部进4℃冷水，蓄冷水槽1上部出11℃温水的效果，在蓄放冷水泵P1循环下不断给蓄冷水槽1充冷。制冷机4供给3℃的冷水一路经过电动开关阀五V5，进入板式换热器3的冷机侧后变成8℃，另一路流过由电动调节阀V6控制的旁通管路，经过电动开关阀八V8后与板式换热器3的8℃的出水混合后达到7℃，然后送到用户末端，12℃的回水经过循环冷冻水变频泵P2回到制冷机4。电动调节阀V6调节旁通流量，电动开关阀七V7关闭。这种工况适用于有夜间负荷，且量不大的情况。Electric on-off valve one V1, electric on-off valve three V3 are closed, electric on-off valve two V2, electric on-off valve four V4 are turned on, and storage and discharge cold water pump P1 is turned on. The upper water distributor of cold storage tank 1 is connected to the side water inlet of
上述四种工况的运行控制策略如表2所示。The operation control strategies of the above four working conditions are shown in Table 2.
表2Table 2
实施例三Embodiment three
参看图3，本实用新型的主机和蓄冷槽并联的系统包括：Referring to Fig. 3, the parallel system of the main engine and cold storage tank of the present invention includes:
开式的蓄放冷回路和闭式的循环冷冻水回路。蓄放冷回路与实施例一相同。循环冷冻水回路由板式换热器3的冷机侧管路、电动开关阀五V5、电动开关阀七V7、电动开关阀八V8、电动开关阀九V9、电动调节阀V6、制冷机4、循环冷冻水变频泵P2和二次侧放冷变频泵P3组成。板式换热器3的冷机侧管路出水口依次经电动开关阀七V7、循环冷冻水变频泵P2、制冷机4和电动开关阀五V5连接到板式换热器3的冷机侧管路进水口。用户侧回水与循环冷冻水变频泵P2的进口相连，用户侧回水另经二次侧放冷变频泵P3和电动开关阀八V8连接到板式换热器3的冷机侧管路进水口。板式换热器3的冷机侧管路出水口经电动调节阀V6与制冷机4的出口相连，并经电动开关阀九V9连接用户侧供水。Open storage cold circuit and closed circulating chilled water circuit. The cold storage and release circuit is the same as that in Embodiment 1. The circulating chilled water circuit consists of the chiller side pipeline of the
本实用新型系统工作时，蓄冷工况下设计制冷机4出水温度3℃、制冷机4进水温度8℃，蓄冷水槽1进水温度4℃、蓄冷水槽1出水温度11℃；放冷工况下设计制冷机4出水温度7℃、制冷机4进水温度12℃，蓄冷水槽1进水温度11℃、蓄冷水槽1出水温度4℃。这几个参数也可根据实际系统设计进行调整。When the system of the utility model is working, the outlet water temperature of refrigerator 4 is designed to be 3°C, the inlet water temperature of refrigerator 4 is 8°C, the inlet water temperature of cold storage tank 1 is 4°C, and the outlet water temperature of cold storage tank 1 is 11°C under cold storage working conditions; Under the following design, the outlet water temperature of refrigerator 4 is 7°C, the inlet water temperature of refrigerator 4 is 12°C, the inlet water temperature of cold storage tank 1 is 11°C, and the outlet water temperature of cold storage tank 1 is 4°C. These parameters can also be adjusted according to the actual system design.
主机和蓄冷水槽1并联的系统共有五种运行工况，由智能控制系统进行整机控制，具体运行控制策略如下：The parallel system of the main engine and cold storage water tank 1 has five operating conditions, and the whole machine is controlled by the intelligent control system. The specific operation control strategy is as follows:
模式1：冷机蓄冷工况。Mode 1: Cooling machine cold storage working condition.
电动开关阀一V1、电动开关阀三V3关闭，电动开关阀二V2、电动开关阀四V4开启，蓄放冷水泵P1开启。蓄冷水槽1上布水器经蓄放冷水泵P1与板式换热器3的水槽侧进水口相连，蓄冷水槽1下布水器与板式换热器3的水槽侧出水口相连，以达到蓄冷水槽1底部进4℃冷水，蓄冷水槽1上部出11℃温水的效果，在蓄放冷水泵P1循环下不断给蓄冷水槽1充冷。电动开关阀五V5、电动开关阀七V7开启，制冷机4供给3℃的冷水经过电动开关阀五V5，进入板式换热器3的冷机侧后变成8℃，再经过电动开关阀七V7，循环冷冻水变频泵P2回到制冷机4。电动调节阀V6关闭，电动开关阀八V8、电动开关阀九V9关闭，二次侧放冷变频泵P2关闭，不给用户供冷。模式2：冷槽放冷工况。Electric on-off valve one V1, electric on-off valve three V3 are closed, electric on-off valve two V2, electric on-off valve four V4 are turned on, and storage and discharge cold water pump P1 is turned on. The upper water distributor of cold storage tank 1 is connected to the side water inlet of
电动开关阀二V2、电动开关阀四V4关闭，电动开关阀一V1、电动开关阀三V3开启，蓄放冷水泵P1开启。蓄冷水槽1下布水器经蓄放冷水泵P1与板式换热器3的水槽侧进水口相连，蓄冷水槽1上布水器与板式换热器3的水槽侧出水口相连，以达到蓄冷水槽1底部供给4℃冷水，蓄冷水槽1上部回收11℃温水的效果，在蓄放冷水泵P1循环下不断取用蓄冷水槽1冷量。制冷机4关闭，从板式换热器3的冷机侧出口送出7℃冷冻水，经过电动开关阀九V9，供给用户末端，末端的12℃回水经过二次侧放冷变频泵P3，电动开关阀八V8，回到板式换热器3的冷机侧进口。电动开关阀五V5、电动开关阀七V7关闭，电动调节阀V6关闭，循环冷冻水变频泵P2关闭。蓄冷水槽1单供时不经过制冷机4，减少了阻力损失。Electric on-off valve two V2, electric on-off valve four V4 are closed, electric on-off valve one V1, electric on-off valve three V3 are turned on, and storage and discharge cold water pump P1 is turned on. The lower water distributor of cold storage tank 1 is connected to the side water inlet of
模式3：冷机直供工况。Mode 3: The working condition of direct supply from the cold machine.
电动开关阀一V1、电动开关阀二V2、电动开关阀三V3、电动开关阀四V4关闭，蓄放冷水泵P1关闭，蓄冷回路停止运行。制冷机4供给7℃的冷水经过全开的电动调节阀V6，电动开关阀九V9，送到用户末端，12℃的回水经过循环冷冻水变频泵P2回到制冷机4。电动开关阀五V5、电动开关阀七V7、电动开关阀八V8关闭，二次侧放冷变频泵P3关闭。冷机直供时不经过板式换热器3，减小了阻力损失，保障了高效运行。Electric on-off valve one V1, electric on-off valve two V2, electric on-off valve three V3, electric on-off valve four V4 are closed, the storage and discharge cold water pump P1 is closed, and the cold storage circuit stops running. Refrigerator 4 supplies 7°C cold water through the fully open electric control valve V6 and electric on-off valve Nine V9, and sends it to the user end, and 12°C return water returns to the refrigerator 4 through the circulating chilled water frequency conversion pump P2. Electric on-off valve five V5, electric on-off valve seven V7, electric on-off valve eight V8 are closed, and the secondary side cooling frequency conversion pump P3 is closed. The direct supply of the cold machine does not pass through the
模式4：联合供冷工况。Mode 4: Combined cooling condition.
电动开关阀二V2、电动开关阀四V4关闭，电动开关阀一V1、电动开关阀三V3开启，蓄放冷水泵P1开启，这样蓄冷水槽1下布水器经蓄放冷水泵P1与板式换热器3的水槽侧进水口相连，蓄冷水槽1上布水器与板式换热器3的水槽侧出水口相连，以达到蓄冷水槽1底部供给4℃冷水，蓄冷水槽1上部回收11℃温水的效果，在蓄放冷水泵P1循环下不断取用蓄冷水槽1冷量。制冷机4供给7℃的冷水经过电动调节阀V6，与从板式换热器3的冷机侧出口送出7℃冷冻水混合后，经过电动开关阀九V9送到用户末端，12℃的回水一路经过循环冷冻水变频泵P2回到制冷机4，另一路经过二次侧放冷变频泵P3和电动开关阀八V8，回到板式换热器3的冷机侧进口。电动开关阀五V5、电动开关阀七V7关闭。制冷机4和蓄冷水槽1供冷为并联流程，可以同时供冷，互不影响，更便于安排蓄冷策略。Electric on-off valve two V2, electric on-off valve four V4 are closed, electric on-off valve one V1, electric on-off valve three V3 are on, storage and discharge cold water pump P1 is on, so that the water distributor under cold storage tank 1 is exchanged with the plate type through the storage and discharge cold water pump P1 The water inlet of the water tank side of the
模式5：边蓄变供工况。Mode 5: side storage to power supply working condition.
电动开关阀一V1、电动开关阀三V3关闭，电动开关阀二V2、电动开关阀四V4开启，蓄放冷水泵P1开启，这样蓄冷水槽1上布水器经蓄放冷水泵P1与板式换热器3的水槽侧进水口相连，蓄冷水槽1下布水器与板式换热器3的水槽侧出水口相连，以达到蓄冷水槽1底部进4℃冷水，蓄冷水槽1上部出11℃温水的效果，在蓄放冷水泵P1循环下不断给蓄冷水槽1充冷。制冷机4供给3℃的冷水一路经过电动开关阀五V5，进入板式换热器3的冷机侧后变成8℃，另一路流过由电动调节阀V6控制的旁通管路后与板换8℃的出水混合后达到7℃，然后经过电动开关阀九V9送到用户末端，12℃的回水经过循环冷冻水变频泵P2回到制冷机4。电动调节阀V6调节旁通流量，电动开关阀七V7、电动开关阀八V8关闭，二次侧放冷变频泵P3关闭。这种工况适用于有夜间负荷，且量不大的情况。Electric on-off valve one V1, electric on-off valve three V3 are closed, electric on-off valve two V2, electric on-off valve four V4 are on, and storage and discharge cold water pump P1 is on, so that the water distributor on the cold storage tank 1 is exchanged with the plate type through the storage and discharge cold water pump P1. The side water inlet of the water tank of the
上述五种工况的运行控制策略如表3所示。The operation control strategies of the above five working conditions are shown in Table 3.
表3table 3
Claims (3)
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102226556A (en) * | 2011-04-29 | 2011-10-26 | 江苏辉煌太阳能股份有限公司 | Ice storage and cold accumulation conversion device |
| CN102345910A (en) * | 2010-08-06 | 2012-02-08 | 同方节能工程技术有限公司 | Water cool storage air conditioning system with indirect cool storage |
| CN104879865A (en) * | 2015-04-27 | 2015-09-02 | 仪征祥源动力供应有限公司 | Chilled water storage system suitable for transition seasons and winter |
| CN108917126A (en) * | 2017-03-29 | 2018-11-30 | 动态技术有限公司 | Air-conditioning system and air conditioning control method |
-
2010
- 2010-08-06 CN CN2010202837605U patent/CN201772579U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102345910A (en) * | 2010-08-06 | 2012-02-08 | 同方节能工程技术有限公司 | Water cool storage air conditioning system with indirect cool storage |
| CN102345910B (en) * | 2010-08-06 | 2013-12-25 | 同方节能工程技术有限公司 | Water cool storage air conditioning system with indirect cool storage |
| CN102226556A (en) * | 2011-04-29 | 2011-10-26 | 江苏辉煌太阳能股份有限公司 | Ice storage and cold accumulation conversion device |
| CN104879865A (en) * | 2015-04-27 | 2015-09-02 | 仪征祥源动力供应有限公司 | Chilled water storage system suitable for transition seasons and winter |
| CN104879865B (en) * | 2015-04-27 | 2017-12-26 | 仪征祥源动力供应有限公司 | A kind of chilled water storage system being adapted in transition season and winter operation |
| CN108917126A (en) * | 2017-03-29 | 2018-11-30 | 动态技术有限公司 | Air-conditioning system and air conditioning control method |
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