CN206338194U - A kind of cooling device for cooling water ring vacuum pumps - Google Patents
A kind of cooling device for cooling water ring vacuum pumps Download PDFInfo
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- CN206338194U CN206338194U CN201621313658.9U CN201621313658U CN206338194U CN 206338194 U CN206338194 U CN 206338194U CN 201621313658 U CN201621313658 U CN 201621313658U CN 206338194 U CN206338194 U CN 206338194U
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- 238000001816 cooling Methods 0.000 title claims abstract description 23
- 239000000498 cooling water Substances 0.000 title claims description 19
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 153
- 238000004378 air conditioning Methods 0.000 description 15
- 238000005086 pumping Methods 0.000 description 4
- 230000000087 stabilizing effect Effects 0.000 description 4
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- 229910052719 titanium Inorganic materials 0.000 description 3
- 239000010936 titanium Substances 0.000 description 3
- 230000007423 decrease Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 239000010962 carbon steel Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000013535 sea water Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000008400 supply water Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
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Abstract
本实用新型涉及一种用于冷却水环式真空泵的冷却装置，包括3组冷水机组、分水器、集水器、冷冻水泵组；3组冷水机组的出口均通过管道与分水器的入口相接，分水器的出口通过管道与水环式真空泵的入口相接，水环式真空泵的出口通过管道与集水器的入口相接，集水器的出口通过管道与冷冻水泵组的入口相接，冷冻水泵组的出口通过管道与3组冷水机组的入口相接。本实用新型能保证进入水环式真空泵的工作水保持较低温度，属于发电厂的技术领域。
The utility model relates to a cooling device for cooling a water ring vacuum pump, which comprises 3 sets of water chillers, a water separator, a water collector, and a chilled water pump group; the outlets of the 3 sets of water chillers all pass through the pipes and the inlets of the water separators The outlet of the water separator is connected to the inlet of the water ring vacuum pump through the pipe, the outlet of the water ring vacuum pump is connected to the inlet of the water collector through the pipe, and the outlet of the water collector is connected to the inlet of the chilled water pump group through the pipe. Connected, the outlet of the chilled water pump group is connected to the inlet of the three groups of chillers through pipes. The utility model can ensure that the temperature of the working water entering the water ring vacuum pump is kept relatively low, and belongs to the technical field of power plants.
Description
技术领域technical field
本实用新型涉及发电厂相关的技术领域，尤其涉及一种用于冷却水环式真空泵的冷却装置。The utility model relates to the technical field related to power plants, in particular to a cooling device for cooling a water ring vacuum pump.
背景技术Background technique
水环式真空泵具有抽气量大、能耗小、水质损失少、安全可靠、自动化程度高等优点，因此在发电厂中得到广泛使用。水环式真空泵的泵体中装有适量的水作为工作水，水环式真空泵靠泵腔容积的变化实现吸气、压缩和排气的功能。水环式真空泵的抽气能力直接影响凝汽器内空气的聚集程度，而水环式真空泵的抽气能力主要受工作水温度的影响。The water ring vacuum pump has the advantages of large pumping capacity, low energy consumption, less water quality loss, safety and reliability, and high degree of automation, so it is widely used in power plants. The pump body of the water ring vacuum pump is equipped with an appropriate amount of water as working water, and the water ring vacuum pump realizes the functions of suction, compression and exhaust by changing the volume of the pump chamber. The pumping capacity of the water ring vacuum pump directly affects the degree of air accumulation in the condenser, while the pumping capacity of the water ring vacuum pump is mainly affected by the temperature of the working water.
目前发电厂中多采用主机循环冷却水来冷却水环式真空泵内的工作水。主机循环水温度根据地区、冷却方式的差异各有不同。但在夏季，大部分地区循环水温度能达到25℃以上。因此在夏季工况，真空泵的运行情况比较恶劣。此外，如果主机循环冷却水采用海水，真空泵的换热管还需采用钛管。At present, the circulating cooling water of the main engine is mostly used in power plants to cool the working water in the water ring vacuum pump. The temperature of the circulating water of the main engine varies according to the region and the cooling method. But in summer, the temperature of circulating water in most areas can reach above 25°C. Therefore, in summer conditions, the operation of the vacuum pump is relatively poor. In addition, if the circulating cooling water of the main engine uses seawater, the heat exchange tube of the vacuum pump must also use titanium tubes.
当发电厂的机组在夏季工况运行时，由于夏季环境温度高，发电厂的主机循环水入口温度可达到33℃，仍采用主机循环水冷却的方法效果普遍很差，工作水的温度普遍超高，导致水环式真空泵的抽气能力严重下降，使空气在凝汽器内积累，导致凝汽器的真空度下降，从而严重影响发电厂机组的热经济性。When the unit of the power plant is operating in summer, due to the high ambient temperature in summer, the inlet temperature of the circulating water of the main engine in the power plant can reach 33°C, and the cooling effect of the main engine circulating water is generally poor, and the temperature of the working water generally exceeds High, leading to a serious decline in the pumping capacity of the water ring vacuum pump, causing air to accumulate in the condenser, resulting in a decrease in the vacuum degree of the condenser, which seriously affects the thermal economy of the power plant unit.
实用新型内容Utility model content
针对现有技术中存在的技术问题，本实用新型的目的是：提供一种用于冷却水环式真空泵的冷却装置，能保证进入水环式真空泵的工作水保持较低温度。Aiming at the technical problems in the prior art, the purpose of this utility model is to provide a cooling device for cooling the water ring vacuum pump, which can ensure that the working water entering the water ring vacuum pump maintains a relatively low temperature.
为了达到上述目的，本实用新型采用如下技术方案：In order to achieve the above object, the utility model adopts the following technical solutions:
一种用于冷却水环式真空泵的冷却装置，包括3组冷水机组、分水器、集水器、冷冻水泵组；3组冷水机组的出口均通过管道与分水器的入口相接，分水器的出口通过管道与水环式真空泵的入口相接，水环式真空泵的出口通过管道与集水器的入口相接，集水器的出口通过管道与冷冻水泵组的入口相接，冷冻水泵组的出口通过管道与3组冷水机组的入口相接。该冷却装置能使水环式真空泵的工作水保持较低温度，且同时提高了冷水机组的经济效益。A cooling device for cooling a water ring vacuum pump, comprising 3 sets of water chillers, a water separator, a water collector, and a chilled water pump set; the outlets of the three sets of water chillers are all connected to the inlets of the water separator through pipes, and the The outlet of the water collector is connected to the inlet of the water ring vacuum pump through the pipeline, the outlet of the water ring vacuum pump is connected to the inlet of the water collector through the pipeline, and the outlet of the water collector is connected to the inlet of the chilled water pump unit through the pipeline. The outlet of the water pump group is connected to the inlet of the three groups of chillers through pipes. The cooling device can keep the working water of the water ring vacuum pump at a lower temperature, and at the same time improve the economic benefit of the chiller.
进一步的是：所述的冷冻水泵组的数量有4组，每组冷冻水泵组均包括串联连接的冷冻水泵和差压式过滤型除垢器，4组冷冻水泵组并联连接在冷水机组和集水器之间的管道上。Further, there are 4 sets of chilled water pump sets, and each set of chilled water pump sets includes chilled water pumps and differential pressure filter type descalers connected in series, and 4 sets of chilled water pump sets are connected in parallel between the chilled water unit and the collector. on the pipes between the water tanks.
进一步的是：所述的冷水机组为空调主机。Further, the chiller is an air conditioner main unit.
进一步的是：在集水器和冷冻水泵组之间的管道上设有膨胀水箱。膨胀水箱起到稳压的作用，由集水器流过来的水压力不稳定，膨胀水箱可起到稳压作用。Further, an expansion tank is provided on the pipeline between the water collector and the chilled water pump unit. The expansion water tank plays the role of stabilizing the pressure. The pressure of the water flowing from the water collector is unstable, and the expansion tank can play the role of stabilizing the pressure.
进一步的是：所述的冷水机组包括冷凝器和蒸发器。Further, the chiller includes a condenser and an evaporator.
总的说来，本实用新型具有如下优点：In general, the utility model has the following advantages:
1.采用更低温度的空调冷冻水作为真空泵冷却水，极大降低了真空泵的最低吸入真空，即提高了真空泵的抽吸能力。1. The use of lower-temperature air-conditioning chilled water as the cooling water of the vacuum pump greatly reduces the minimum suction vacuum of the vacuum pump, that is, improves the suction capacity of the vacuum pump.
2.用更低温度的空调冷冻水作为真空泵冷却水，降低了真空泵的功耗，降低了厂用电率，提高电厂运行的经济型。2. Using chilled air-conditioning water with a lower temperature as the cooling water of the vacuum pump reduces the power consumption of the vacuum pump, lowers the power consumption rate of the plant, and improves the economical operation of the power plant.
3.空调冷冻水水质好，真空泵的换热器无需采用钛管等较贵材质。3. The chilled water of the air conditioner is of good quality, and the heat exchanger of the vacuum pump does not need to use expensive materials such as titanium tubes.
4.在过渡季和冬季空调系统较短的供冷期期间，能充分弥补空调主机低工况或停机工况时的不足，让冷水机组全年均达到满负荷运行，冷水机组利用率较高。4. During the short cooling period of the air-conditioning system in the transitional season and winter, it can fully make up for the shortage of the air-conditioning main engine in low working conditions or shutdown conditions, so that the chillers can reach full-load operation throughout the year, and the utilization rate of the chillers is high .
附图说明Description of drawings
图1是本实用新型的原理示意图。Fig. 1 is a schematic diagram of the principle of the utility model.
其中，1为冷水机组，2为分水器，3为水环式真空泵，4为集水器，5为冷冻水泵，6为差压式过滤型除垢器，7为膨胀水箱。Among them, 1 is the chiller, 2 is the water separator, 3 is the water ring vacuum pump, 4 is the water collector, 5 is the chilled water pump, 6 is the differential pressure filter type descaler, and 7 is the expansion tank.
具体实施方式detailed description
下面将结合附图和具体实施方式来对本实用新型做进一步详细的说明。The utility model will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.
结合图1所示，一种用于冷却水环式真空泵的冷却装置，包括3组冷水机组、分水器、集水器、冷冻水泵组；冷水机组、分水器、集水器、冷冻水泵组均属于现有的成熟技术，分水器和集水器均有多个入口和多个出口，分水器用于向各个设备供水，集水器用于收集各个设备的水。本实用新型中冷水机组的数量有3组，3组冷水机组的出口均通过管道与分水器的入口相接，3组冷水机组的出口处的管道汇聚在同一根管道上，即3根管道汇聚在同一根管道上。分水器的出口通过管道与水环式真空泵的入口相接，水环式真空泵的出口通过管道与集水器的入口相接，集水器的出口通过管道与冷冻水泵组的入口相接，冷冻水泵组的出口通过管道与3组冷水机组的入口相接。As shown in Figure 1, a cooling device for cooling water ring vacuum pumps, including 3 sets of water chillers, water separators, water collectors, and chilled water pumps; chillers, water separators, water collectors, and chilled water pumps The groups all belong to the existing mature technology. Both the water separator and the water collector have multiple inlets and multiple outlets. The water separator is used to supply water to each equipment, and the water collector is used to collect water from each equipment. There are 3 groups of chillers in the utility model, and the outlets of the 3 chillers are all connected to the inlet of the water separator through pipes, and the pipes at the outlets of the 3 chillers converge on the same pipe, that is, 3 pipes converge on the same pipe. The outlet of the water separator is connected to the inlet of the water ring vacuum pump through the pipe, the outlet of the water ring vacuum pump is connected to the inlet of the water collector through the pipe, and the outlet of the water collector is connected to the inlet of the chilled water pump group through the pipe. The outlet of the chilled water pump group is connected to the inlet of the three groups of chillers through pipes.
所述的冷冻水泵组的数量有4组，每组冷冻水泵组均包括串联连接的冷冻水泵和差压式过滤型除垢器，4组冷冻水泵组并联连接在冷水机组和集水器之间的管道上。即一组冷冻水泵组中，冷冻水泵和差压式过滤型除垢器串联连接；4组冷冻水泵组之间为并联连接，4组冷冻水泵组并联连接后设置在冷水机组和集水器之间的管道上。冷冻水泵用于提升水压，以克服系统管道内的压损。1组冷水机组对应1组冷冻水泵组，剩余的1组冷冻水泵组处于备用状态。There are 4 sets of chilled water pump sets, each set of chilled water pump sets includes chilled water pumps connected in series and differential pressure filter type descaling devices, and 4 sets of chilled water pump sets are connected in parallel between the chiller unit and the water collector on the pipeline. That is, in a group of chilled water pumps, the chilled water pump and the differential pressure filter type descaler are connected in series; the 4 sets of chilled water pumps are connected in parallel, and the 4 sets of chilled water pumps are connected in parallel and installed between the chiller and the water collector between pipes. Chilled water pumps are used to boost water pressure to overcome pressure losses in system piping. One chiller unit corresponds to one chilled water pump set, and the remaining chilled water pump set is in standby state.
所述的冷水机组为空调主机。The chiller is an air-conditioning host.
在集水器和冷冻水泵组之间的管道上设有膨胀水箱。膨胀水箱起到稳压的作用，由集水器流过来的水压力不稳定，膨胀水箱可起到稳压作用。An expansion tank is provided on the pipeline between the water collector and the chilled water pump unit. The expansion water tank plays the role of stabilizing the pressure. The pressure of the water flowing from the water collector is unstable, and the expansion tank can play the role of stabilizing the pressure.
所述的冷水机组包括冷凝器和蒸发器。The chiller includes a condenser and an evaporator.
使用本实用新型时，冷却水从冷水机组流出，然后流向分水器，分水器将冷却水分流向水环式真空泵，从而对水环式真空泵起到降温的作用，冷却后，水流流向集水器，然后再流向冷冻水泵组，最终流回冷水机组。When the utility model is used, the cooling water flows out from the chiller, and then flows to the water separator, and the water separator flows the cooling water to the water ring vacuum pump, thereby cooling the water ring vacuum pump. After cooling, the water flows to the water collection device, then flows to the chilled water pump group, and finally flows back to the chiller.
本实用新型采用空调冷冻水作为水环式真空泵的冷却水，由于一般发电厂主厂房、集控楼区域均设置中央空调冷水系统，空调主机采用水冷冷水机组，冷却媒质为空调冷冻水(温度为7～12℃)，而该参数冷却水刚好能满足冷却水环式真空泵的要求，且该空调冷冻水水质较好，水环式真空泵的换热器采用普通碳钢材质即可。利用已有的中央空调冷冻水作为水环式真空泵的冷却水，水环式真空泵被当做一个普通的空调系统末端，因此对整个空调系统均无任何影响，增设水环式真空泵冷却末端仅加大了冷水主机的容量，反而让冷水机组运行更加高效节能，且在过渡季和冬季空调系统较短的供冷期期间，也能充分弥补空调主机低工况或停机工况时的不足，让冷水机组全年均达到满负荷运行，冷水机组利用率较高。The utility model adopts air-conditioning chilled water as the cooling water of the water-ring vacuum pump. Since the general power plant main workshop and centralized control building areas are equipped with central air-conditioning chilling water systems, the air-conditioning host adopts water-cooled chillers, and the cooling medium is air-conditioning chilled water (temperature is 7～12℃), and the cooling water of this parameter can just meet the requirements of the cooling water ring vacuum pump, and the chilled water quality of the air conditioner is good, and the heat exchanger of the water ring vacuum pump can be made of ordinary carbon steel. Using the existing chilled water of the central air conditioner as the cooling water of the water ring vacuum pump, the water ring vacuum pump is regarded as an ordinary end of the air conditioning system, so it has no impact on the entire air conditioning system, and the addition of the cooling end of the water ring vacuum pump only increases The capacity of the chiller is increased, which makes the chiller run more efficiently and energy-saving, and during the short cooling period of the air-conditioning system in the transition season and winter, it can also fully make up for the shortage of the air-conditioning host in low or shutdown conditions, so that the chilled water The unit runs at full load throughout the year, and the utilization rate of the chiller is relatively high.
由于空调冷冻水温度较低，对应水环式真空泵的最低吸入真空(即极限抽吸真空压力)，约为2.1kPa(a)，极大的降低了水环式真空泵的最低吸入真空，相应降低了凝汽器的真空度，提高了机组的热经济性。采用更低温度的空调冷冻水作为真空泵冷却水，极大降低了真空泵的最低吸入真空，即提高了真空泵的抽吸能力。用更低温度的空调冷冻水作为真空泵冷却水，降低了真空泵的功耗，降低了厂用电率，提高电厂运行的经济型。空调冷冻水水质好，真空泵的换热器无需采用钛管等较贵材质。Due to the low temperature of the chilled water in the air conditioner, the minimum suction vacuum of the water ring vacuum pump (that is, the ultimate suction vacuum pressure) is about 2.1kPa(a), which greatly reduces the minimum suction vacuum of the water ring vacuum pump and correspondingly reduces The vacuum degree of the condenser is improved, and the thermal economy of the unit is improved. The use of lower-temperature air-conditioning chilled water as the cooling water of the vacuum pump greatly reduces the minimum suction vacuum of the vacuum pump, that is, improves the suction capacity of the vacuum pump. Using lower-temperature air-conditioning chilled water as vacuum pump cooling water reduces the power consumption of the vacuum pump, reduces the power consumption rate of the plant, and improves the economy of the power plant operation. The chilled water of the air conditioner is of good quality, and the heat exchanger of the vacuum pump does not need to use expensive materials such as titanium tubes.
上述实施例为本实用新型较佳的实施方式，但本实用新型的实施方式并不受上述实施例的限制，其他的任何未背离本实用新型的精神实质与原理下所作的改变、修饰、替代、组合、简化，均应为等效的置换方式，都包含在本实用新型的保护范围之内。The above-mentioned embodiment is a preferred implementation mode of the present utility model, but the implementation mode of the present utility model is not limited by the above-mentioned embodiment, and any other changes, modifications and substitutions made without departing from the spirit and principle of the present utility model , combination, and simplification, all should be equivalent replacement methods, and are all included in the protection scope of the present utility model.
Claims (5)
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| CN201621313658.9U CN206338194U (en) | 2016-12-01 | 2016-12-01 | A kind of cooling device for cooling water ring vacuum pumps |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111828321A (en) * | 2020-06-16 | 2020-10-27 | 华电电力科学研究院有限公司 | Working liquid cooling method for effectively improving working efficiency of vacuum pump |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111828321A (en) * | 2020-06-16 | 2020-10-27 | 华电电力科学研究院有限公司 | Working liquid cooling method for effectively improving working efficiency of vacuum pump |
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