CN207442679U - A kind of high voltage converter cooling system for power plant - Google Patents

A kind of high voltage converter cooling system for power plant Download PDF

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Publication number
CN207442679U
CN207442679U CN201720829956.1U CN201720829956U CN207442679U CN 207442679 U CN207442679 U CN 207442679U CN 201720829956 U CN201720829956 U CN 201720829956U CN 207442679 U CN207442679 U CN 207442679U
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CN
China
Prior art keywords
high voltage
voltage converter
condenser
cooling
cooling system
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN201720829956.1U
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Chinese (zh)
Inventor
薛贵平
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
DATANG TAIYUAN CO-GENERATION POWER PLANT
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DATANG TAIYUAN CO-GENERATION POWER PLANT
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Filing date
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Priority to CN201720829956.1U priority Critical patent/CN207442679U/en
Application granted granted Critical
Publication of CN207442679U publication Critical patent/CN207442679U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model discloses a kind of high voltage converter cooling systems for power plant, high voltage converter is installed in frequency conversion room, the heat generated in high voltage converter operation enters condenser into line replacement by ventilating duct, cold wind is sent out after circularly-supercharged wind turbine, cooling effect is played in such circular flow;Cooling water enters from the entrance of condenser, is flowed out from outlet, plays cold and hot metathesis.Extend the service life of high voltage converter, while play the effect of energy-saving, avoid more large power air-conditioned uses and further function as the effect of energy-saving, while greatly improve the operational reliability of frequency converter.

Description

A kind of high voltage converter cooling system for power plant
Technical field
The utility model is related to converter technology fields, particularly relate to a kind of high voltage converter cooling system for power plant System.
Background technology
High voltage converter is widely used in the production process of power plant and large-scale manufacturing enterprise, with Power Electronic Technique Rapid development, high-voltage large-capacity frequency converter gradually applied in Auxiliary Machinery of Power Plant equipment, in order to reduce station service power consumption rate, subtracted Few cost of electricity-generating, improves rate for incorporation into the power network competitiveness, and domestic thermal power plant uses high-voltage variable-frequency and variable-speed system energy saving to realize one after another.
High voltage converter can generate substantial amounts of thermal energy in the process of running, seriously affect its operational reliability and shorten change The service life of frequency device, taking the cooling provision of science is very important.High voltage converter plant capacity is larger, 4% work( Rate loss is mainly dissipated in form of heat among running environment.If it cannot timely and effectively solve the building ring of Transducer Room Border temperature problem will directly jeopardize the operational safety of transducer body;It is final excessively high because of temperature, cause frequency converter overheating protection Action tripping.To ensure that frequency converter has good running environment, it is necessary to which the temperature control of frequency converter and running environment is taken Measure.
The type of cooling of existing high voltage converter is cooled down using more large power air-conditioned long-times, uninterrupted operation, There are it is many shortcomings that:1) more large power air-conditioned costs are higher;2) more large power air-conditioned long-times, which run without interruption, produces Raw substantial amounts of power consumption;3) air-conditioning maintenance, maintenance workload and expense are larger, especially still require that the special of refrigeration in winter Repair, maintenance workload bigger under the method for operation.
Utility model content
The purpose of this utility model provides a kind of high voltage variable for power plant aiming at the situation of the above-mentioned prior art Frequency device cooling system, solution cool down the problems such as high voltage converter is costly, maintenance load is big with air-conditioning.
The purpose of this utility model is achieved through the following technical solutions:A kind of high voltage converter for power plant Cooling system, high voltage converter are installed in frequency conversion room, and the cooling system includes and the high voltage converter heat radiation air outlet The ventilating duct of connection, the condenser for being arranged on the ventilating duct and circularly-supercharged wind turbine, the circularly-supercharged assembling exist In ventilating duct below condenser.
Further, the condenser is water cooled condenser.
Further, the water cooled condenser is vertical shell-tube type, horizontal shell and tube type or sleeve type structure.
Further, the condenser includes cooling water intake and cooling water outlet, the cooling water intake The hydraulic pressure of water inlet be 0.2~0.3Mpa, inflow temperature≤33 DEG C.
Further, the cooling water intake 5 and cooling water outlet 4 are connected with the cooling tower of power plant.
The beneficial effects of the utility model are:Using the method for the physics of condenser heat exchange, the side cycled by ventilating duct The heat generated in formula displacement high voltage converter operation, extends the service life of high voltage converter, while plays energy-saving Effect avoids more large power air-conditioned uses and further functions as the effect of energy-saving, while greatly improves frequency converter Operational reliability.The technical solution is suitable for all high voltage converter cabinets, the other electric panel cabinets for being also easy to produce overheat.
Description of the drawings
Fig. 1 is a kind of high voltage converter schematic diagram of cooling system structure for power plant of the utility model;
Reference sign:1- high voltage converters, 2- ventilating ducts, 3- condensers, 4- cooling water outlets, 5- cooling waters The circularly-supercharged wind turbine of water inlet, 6-, 7- frequency conversion rooms.
Specific embodiment
The high voltage converter cooling system for power plant a kind of to the utility model, which is done, below in conjunction with the accompanying drawings further retouches It states:The embodiment is merely to illustrate the utility model rather than limitation the scope of the utility model, those skilled in the art couple The modification of the various equivalent forms of the utility model falls within the application scope as defined in the appended claims.
A kind of high voltage converter cooling system for power plant as shown in Figure 1 is installed on the frequency conversion room 7 in power plant Interior, medium-high voltage frequency converter 1 is installed in frequency conversion room 7, and 1 top of high voltage converter is equipped with heat radiation air outlet, one end of ventilating duct 2 It is connected with heat radiation air outlet, 2 other end of ventilating duct installs condenser 3, and condenser 3 is mounted on the opposite of high voltage converter 1 It is parallel with it.Circularly-supercharged wind turbine 6 is also mounted in ventilating duct 2 below condenser 3.The cold wind of circularly-supercharged wind turbine 6 goes out Mouthful (not shown) towards the lower part of high voltage converter 1 air inlet (not shown), so that the cold wind that circularly-supercharged wind turbine 6 is sent out can Directly to blow into high voltage converter 1.
The condenser 3 is water cooled condenser, is vertical shell-tube type, horizontal shell and tube type or sleeve type structure, due to water Specific heat be (specific heat capacity of water be 4.2*103 it is burnt/kilogram degree Celsius, the specific heat capacity of steam be 2.1*103 it is burnt/thousand Gram Jie's degree Celsius) thus it is more using water as cooling media.
The condenser 3 includes the cooling water intake 5 and cooling water outlet 4 that lead to 7 outside of frequency conversion room, the cooling The hydraulic pressure of the water inlet of water water inlet 5 be 0.2~0.3Mpa, inflow temperature≤33 DEG C.Cooling water intake 5 and cooling water outlet 4 connect with the cooling tower of power plant.
High voltage converter 1 is installed in frequency conversion room 7, and the heat that high voltage converter 1 generates in running is first by ventilating duct 2 It radiates, subsequently into condenser 3 into line replacement, using cold wind is sent out after circularly-supercharged wind turbine 6, so cycles at room temperature Cooling effect is played in operation;Cooling water enters from cooling water intake 5, is flowed out from cooling water outlet 4, plays cold and hot displacement and makees With.
The hot wind come out from high voltage converter 1, is connected to by air passage 2 in condenser 3, low by temperature in condenser 3 In 33 DEG C of cold water, hot wind transfers heat to cold water after cooling fin, becomes cold wind and is blown out from cooling fin, heat is followed Ring cooling water is taken away, and ensures that the indoor environment temperature of Frequency Converter Control is not higher than 40 DEG C.
Installation condenser 3 requires must be in closed environment, and in order to improve cooling effect, the space of placement devices is as far as possible It is small.The cooling water of condenser 3 is flowed into as industrial circulating water, which heats up in condenser 3, then flow into cooling tower and drop Temperature, the cooling water after cooling then flow into condenser 3, so can constantly recycle cooling water.To protect equipment, it is desirable that follow The pH value of ring water is neutrality, and the impurity of corrosion-free damage copper and iron, the hydraulic pressure of water inlet are generally 0.2~0.3Mpa, inflow temperature ≤33℃。
Equipment is mounted as a whole in high-pressure frequency-conversion switchgear house, using air passage 2 and the cabinet top heat radiation air outlet of high voltage converter 1 It is directly connected to, improves the equipment operating efficiency of condenser 3, at the hot gas directly cooling that can be discharged to high voltage converter 1 Reason.To get in after preventing 3 leak of condenser, drip water plate is provided in 4 side of water outlet of condenser 3;When leak or there is product During water, can directly it arrange to outdoor.
Cooling system is installed on high voltage converter, principle is simple, easily realizes, with obvious effects, low cost, has good Energy-saving effect, greatly save maintenance cost.Cooling system bulk cargo is installed on the frequency converters such as power plant's machine stove primary air fan, condensation pump It puts, works well, stable operation.

Claims (5)

1. a kind of high voltage converter cooling system for power plant is installed in the frequency conversion room (7) in power plant, feature exists In the cooling system includes the ventilating duct (2) being connected with the high voltage converter (1) heat radiation air outlet, is arranged on described lead to The condenser (3) in air passage (2) and circularly-supercharged wind turbine (6), the circularly-supercharged wind turbine (6) are mounted on condenser (3) below Ventilating duct (2) in.
2. high voltage converter cooling system according to claim 1, which is characterized in that the condenser (3) is water-cooled Condenser.
3. high voltage converter cooling system according to claim 2, which is characterized in that the water cooled condenser is vertical Shell-tube type, horizontal shell and tube type or sleeve type structure.
4. the high voltage converter cooling system according to Claims 2 or 3, which is characterized in that the condenser (3) includes cold But water water inlet (5) and cooling water outlet (4), the hydraulic pressure of the water inlet of the cooling water intake (5) is 0.2~0.3Mpa, Inflow temperature≤33 DEG C.
5. high voltage converter cooling system according to claim 4, which is characterized in that the cooling water intake (5) and Cooling water outlet (4) is connected with the cooling tower of power plant.
CN201720829956.1U 2017-07-11 2017-07-11 A kind of high voltage converter cooling system for power plant Expired - Fee Related CN207442679U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201720829956.1U CN207442679U (en) 2017-07-11 2017-07-11 A kind of high voltage converter cooling system for power plant

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201720829956.1U CN207442679U (en) 2017-07-11 2017-07-11 A kind of high voltage converter cooling system for power plant

Publications (1)

Publication Number Publication Date
CN207442679U true CN207442679U (en) 2018-06-01

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CN201720829956.1U Expired - Fee Related CN207442679U (en) 2017-07-11 2017-07-11 A kind of high voltage converter cooling system for power plant

Country Status (1)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113432474A (en) * 2021-07-06 2021-09-24 宋玉峰 Motor frequency converter with heat energy recovery mechanism and use method thereof

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113432474A (en) * 2021-07-06 2021-09-24 宋玉峰 Motor frequency converter with heat energy recovery mechanism and use method thereof

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CF01 Termination of patent right due to non-payment of annual fee
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Granted publication date: 20180601

Termination date: 20190711