CN212512563U - Evaporation condensing type vacuum unit - Google Patents
Evaporation condensing type vacuum unit Download PDFInfo
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- CN212512563U CN212512563U CN201922264296.9U CN201922264296U CN212512563U CN 212512563 U CN212512563 U CN 212512563U CN 201922264296 U CN201922264296 U CN 201922264296U CN 212512563 U CN212512563 U CN 212512563U
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Abstract
The utility model relates to an evaporation condensing vacuum unit, the import that includes evaporative condenser (1) communicates to the main pipeline through the isolating valve, and the export of evaporative condenser (1) communicates to the air inlet of air-cooled roots vacuum pump (2) through gas accuse valve, the gas outlet of air-cooled roots vacuum pump (2) communicates to the upper portion air inlet of deareator (5) through interstage heat exchanger (3) and water ring vacuum pump (4), and concatenates the check valve on the pipeline between interstage heat exchanger (3) and water ring vacuum pump (4), and it has the broken empty valve to peg graft on the pipeline between interstage heat exchanger (3) and water ring vacuum pump (4), and the working solution inlet of above-mentioned water ring vacuum pump (4) is linked together through the lower part liquid outlet of working solution cooler (6) and deareator (5). The utility model relates to an evaporation condensing vacuum unit, it can effectually separate the vapor in the pipeline.
Description
Technical Field
The utility model relates to an evaporation condensing type vacuum unit.
Background
At present, in systems such as power generation of a thermal power plant and the like, high-temperature water vapor discharged after power generation of a steam turbine unit is condensed only by an evaporative condenser; in practical use, the structure not only has high energy consumption, but also has poor condensation effect, thereby causing higher back pressure in the pipeline and hindering the improvement of the power generation efficiency, and therefore a brand new vacuum condensation system is urgently needed to solve the problems.
Disclosure of Invention
An object of the utility model is to overcome above-mentioned not enough, provide an evaporation condensing vacuum unit, it can effectually separate the vapor in the pipeline.
The purpose of the utility model is realized like this:
an evaporation condensing vacuum unit comprises an evaporative condenser, wherein the inlet of the evaporative condenser is communicated to a main pipeline through an isolation valve, the outlet of the evaporative condenser is communicated to the air inlet of an air-cooled Roots vacuum pump through an air control valve, the air outlet of the air-cooled Roots vacuum pump is communicated to the upper air inlet of a gas-water separator through an interstage heat exchanger and a water ring vacuum pump, a check valve is connected in series with a pipeline between the interstage heat exchanger and the water ring vacuum pump, a vacuum breaking valve is connected in an inserting mode with the pipeline between the interstage heat exchanger and the water ring vacuum pump, and a working liquid inlet of the water ring vacuum pump is communicated with a lower liquid outlet of the gas-water separator.
The utility model relates to an evaporation condensing vacuum unit, the bottom liquid outlet of an evaporative condenser is communicated to the cooling liquid inlet of an interstage heat exchanger after passing through a cooling water pump and a filter, and the cooling liquid outlet of the interstage heat exchanger is communicated to the liquid inlet of a working liquid cooler through a pipeline; and a liquid outlet of the working liquid cooler is communicated with a liquid inlet at the bottom of the evaporative condenser.
The utility model relates to an evaporation condensing vacuum unit, evaporative condenser, air-cooled roots vacuum pump, interstage heat exchanger, water ring vacuum pump, deareator and working solution cooler all install in the shell body, and be provided with drain, moisturizing mouth and air inlet on the shell body, the air inlet is linked together through the import of isolation valve and evaporative condenser, and the moisturizing mouth is linked together through the moisturizing mouth of moisturizing valve with deareator, and deareator's bottom drain is linked together through pipeline and drain.
The utility model relates to an evaporation condensing type vacuum unit, evaporative condenser includes the casing, the casing mid-mounting has the heat exchanger, the casing bottom is provided with the basin, and the liquid outlet and the inlet of evaporative condenser bottom are linked together with the basin through the pipeline respectively, the part that the conch wall of casing is located between heat exchanger and the basin is provided with the air inlet window, the fan has been set to the embedding on the top conch wall of casing, and the shower is located between fan and the heat exchanger, be provided with a plurality of shower nozzles towards the heat exchanger on the shower, the circulating pump has been worn to connect on the pipeline between shower and the basin.
The utility model relates to an evaporation condensing type vacuum unit, the heat exchanger contains preceding cavity and back cavity, be connected with many cooling pipes between the preceding tube sheet of preceding cavity and the back tube sheet of back cavity, be provided with preceding tube sheet baffle in the preceding cavity and separate preceding cavity for two upper and lower cavities, be provided with back tube sheet baffle in the back cavity and separate back cavity for two upper and lower cavities, the steam inlet of installation is linked together with the lower cavity of preceding cavity on the preceding cavity, the condensate outlet of installation is linked together with the lower cavity of back cavity on the back cavity, and the condensate outlet communicates to the condensate tank, and the condensate tank bottom communicates to the basin through the condensate pump, be provided with a plurality of through-holes on the back tube sheet baffle, the last cavity of evacuation interface and preceding cavity of installation on the preceding cavity is linked together.
Compared with the prior art, the beneficial effects of the utility model are that:
the utility model discloses an evaporative condenser + air-cooled roots vacuum pump are the main pump + use the water ring pump as backing pump series connection mode, carry out supercooling condensation to mixing water vapor from the evaporative condenser gas vent to the vacuum pump entry and separate 90% water vapor, higher vacuum state in the evaporation condenser than in the natural formation pipeline, make before the vacuum pump guarantee higher pressure differential with the evaporative condenser and overcome the resistance, improve the mobility of saturated humid air, discharge fast in the evaporative condenser, reduce the space that occupies, improve evaporative condenser heat transfer ability, promote the space that improves the vacuum, reduce the end difference. The mixed gas which is condensed and supercooled and occupies a small amount of water vapor enters the inlet of the vacuum machine to be compressed for multiple times, and then the mixed gas is condensed and separated from the water vapor and discharged, so that the unit not only can greatly improve the ultimate vacuum degree of the pump set, improve the suction efficiency of the pump set and reduce the power consumption, but also can improve the efficiency of the high-efficiency vacuum pump set to about 90% from 30% of the original water ring vacuum pump and reduce the running current by about 60-70%. And the backpressure can be reduced by not less than 500pa under the same operation condition of the steam turbine and the cold end, and the method is the most cost-effective choice compared with other vacuum pump transformation projects.
Drawings
Fig. 1 is a block diagram of an evaporation condensing vacuum unit of the present invention.
Wherein:
the system comprises an evaporative condenser 1, an air-cooled Roots vacuum pump 2, an interstage heat exchanger 3, a water ring vacuum pump 4, a gas-water separator 5 and a working liquid cooler 6;
a sewage discharge port 101 and a water replenishing port 102.
Detailed Description
Referring to fig. 1, the utility model relates to an evaporation condensing vacuum unit, the import that includes evaporative condenser 1 communicates to the main pipeline through the isolating valve, and evaporative condenser 1's export communicates to the air inlet of air-cooled roots vacuum pump 2 through the gas accuse valve, the gas outlet of air-cooled roots vacuum pump 2 communicates to the upper portion air inlet of gas-water separator 5 through interstage heat exchanger 3 and water ring vacuum pump 4, and concatenates the check valve on the pipeline between interstage heat exchanger 3 and water ring vacuum pump 4, pegs graft on the pipeline between interstage heat exchanger 3 and water ring vacuum pump 4 and have the rupture valve, and the working solution inlet of above-mentioned water ring vacuum pump 4 is linked together through working solution cooler 6 and gas-water separator 5's lower part liquid outlet;
further, a liquid outlet at the bottom of the evaporative condenser 1 is communicated to a cooling liquid inlet of the interstage heat exchanger 3 after passing through a cooling water pump and a filter, and a cooling liquid outlet of the interstage heat exchanger 3 is communicated to a liquid inlet of the working liquid cooler 6 through a pipeline; the liquid outlet of the working liquid cooler 6 is communicated with the liquid inlet at the bottom of the evaporative condenser 1; therefore, the water condensed in the evaporative condenser 1 and entering the water tank at the bottom of the evaporative condenser is recycled, and water resources are saved;
further, the evaporative condenser 1, the air-cooled roots vacuum pump 2, the interstage heat exchanger 3, the water ring vacuum pump 4, the gas-water separator 5 and the working liquid cooler 6 are all installed in an outer shell, a sewage outlet 101, a water replenishing port 102 and an air inlet are formed in the outer shell, the air inlet is communicated with an inlet of the evaporative condenser 1 through an isolation valve, the water replenishing port 102 is communicated with a water replenishing port of the gas-water separator 5 through a water replenishing valve, and a sewage outlet at the bottom of the gas-water separator 5 is communicated with the sewage outlet 101 through a pipeline;
further, the evaporative condenser 1 is based on the invention patent CN201710835959.0 of the company, the evaporative condenser 1 and the evaporative condenser 1 comprise a shell, a heat exchanger is installed in the middle of the shell, a water tank is arranged at the bottom of the shell, an air inlet window is arranged at the part, located between the heat exchanger and the water tank, of the shell wall of the shell, a fan is embedded on the top shell wall of the shell, a spray pipe is located between the fan and the heat exchanger, a plurality of spray heads facing the heat exchanger are arranged on the spray pipe, and a circulating pump is connected to a pipeline between the spray pipe and the water tank in a penetrating manner; when the cooling device works, cooling water in the water tank is pumped to the spray head through the circulating pump, then is sprayed onto the heat exchanger to cool steam in the water tank, and is cooled by cooling air sucked through the air inlet window in the falling process and then falls into the water tank; meanwhile, the heat exchanger comprises a front cavity and a rear cavity, a plurality of cooling pipes are connected between a front pipe plate of the front cavity and a rear pipe plate of the rear cavity, a front pipe plate partition plate is arranged in the front cavity to divide the front cavity into an upper cavity and a lower cavity, a rear pipe plate partition plate is arranged in the rear cavity to divide the rear cavity into an upper cavity and a lower cavity, a steam inlet arranged on the front cavity is communicated with the lower cavity of the front cavity, a condensed water outlet arranged on the rear cavity is communicated with the lower cavity of the rear cavity, a plurality of through holes are formed in the rear pipe plate partition plate, and a vacuumizing interface arranged on the front cavity is communicated with the upper cavity of the front cavity; during the use, steam gets into the lower chamber of preceding cavity via steam inlet, the condensation in the cooling calandria of below afterwards, the lower chamber of cavity is discharged via the condensate outlet after the comdenstion water gets into, steam after the condensation gets into the upper chamber of cavity behind via the through-hole on the back tube sheet baffle, then get into the upper chamber of preceding cavity and take out via the evacuation interface after the cooling calandria that is located the top condenses once more, whole in-process secondary condensation, the effect of condensation has been guaranteed, and the straight play mode of conventional, can make the steam for getting rid of moisture also taken out, can't reach the effect of ideal, and in this patent, utilize the gyration of two baffles realization air current, make steam can directly not take out via the evacuation mouth, the effect of condensation has been guaranteed.
In addition: it should be noted that the above-mentioned embodiment is only a preferred embodiment of the present patent, and any modification or improvement made by those skilled in the art based on the above-mentioned conception is within the protection scope of the present patent.
Claims (5)
1. The utility model provides an evaporation condensing vacuum unit which characterized in that: the system comprises an inlet of an evaporative condenser (1) communicated to a main pipeline through an isolation valve, an outlet of the evaporative condenser (1) communicated to an air inlet of an air-cooled Roots vacuum pump (2) through an air control valve, an air outlet of the air-cooled Roots vacuum pump (2) communicated to an upper air inlet of a gas-water separator (5) through an interstage heat exchanger (3) and a water ring vacuum pump (4), a check valve is connected in series on the pipeline between the interstage heat exchanger (3) and the water ring vacuum pump (4), a breaking valve is inserted in the pipeline between the interstage heat exchanger (3) and the water ring vacuum pump (4), and a working liquid inlet of the water ring vacuum pump (4) is communicated with a lower liquid outlet of the gas-water separator (5) through a working liquid cooler (6).
2. An evaporative condensing vacuum unit as defined in claim 1, wherein: a liquid outlet at the bottom of the evaporative condenser (1) is communicated to a cooling liquid inlet of the interstage heat exchanger (3) after passing through a cooling water pump and a filter, and a cooling liquid outlet of the interstage heat exchanger (3) is communicated to a liquid inlet of the working liquid cooler (6) through a pipeline; the liquid outlet of the working liquid cooler (6) is communicated with the liquid inlet at the bottom of the evaporative condenser (1).
3. An evaporative condensing vacuum unit as defined in claim 1, wherein: the evaporative condenser (1), the air-cooled Roots vacuum pump (2), the interstage heat exchanger (3), the water ring vacuum pump (4), the gas-water separator (5) and the working liquid cooler (6) are all installed in the outer shell, a sewage outlet (101), a water replenishing port (102) and an air inlet are formed in the outer shell, the air inlet is communicated with an inlet of the evaporative condenser (1) through an isolation valve, the water replenishing port (102) is communicated with the water replenishing port of the gas-water separator (5) through a water replenishing valve, and a sewage outlet in the bottom of the gas-water separator (5) is communicated with the sewage outlet (101) through a pipeline.
4. An evaporative condensing vacuum unit as defined in claim 2, wherein: the evaporative condenser (1) comprises a shell, a heat exchanger is arranged in the middle of the shell, a water tank is arranged at the bottom of the shell, a liquid outlet and a liquid inlet at the bottom of the evaporative condenser (1) are respectively communicated with the water tank through pipelines, an air inlet window is arranged on the part, located between the heat exchanger and the water tank, of the shell wall of the shell, a fan is embedded on the top shell wall of the shell, a spray pipe is located between the fan and the heat exchanger, a plurality of spray heads facing the heat exchanger are arranged on the spray pipe, and a circulating pump penetrates through the pipeline between the spray pipe and the water tank.
5. The evaporative condensing vacuum unit as defined in claim 4, wherein: the heat exchanger contains preceding cavity and back cavity, be connected with many cooling calandrias between the preceding tube sheet of preceding cavity and the back tube sheet of back cavity, be provided with preceding tube sheet baffle in the preceding cavity and separate preceding cavity for two upper and lower cavities, be provided with back tube sheet baffle in the back cavity and separate back cavity for two upper and lower cavities, the steam inlet of installation is linked together with the lower cavity of preceding cavity on the preceding cavity, the condensate outlet of installation is linked together with the lower cavity of back cavity on the back cavity, and the condensate outlet communicates to the condensate tank, and the condensate tank bottom communicates to the basin through the condensate pump, be provided with a plurality of through-holes on the back tube sheet baffle, the evacuation interface of installation is linked together with the upper cavity of preceding cavity on the preceding cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922264296.9U CN212512563U (en) | 2019-12-16 | 2019-12-16 | Evaporation condensing type vacuum unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922264296.9U CN212512563U (en) | 2019-12-16 | 2019-12-16 | Evaporation condensing type vacuum unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212512563U true CN212512563U (en) | 2021-02-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922264296.9U Active CN212512563U (en) | 2019-12-16 | 2019-12-16 | Evaporation condensing type vacuum unit |
Country Status (1)
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|---|---|
| CN (1) | CN212512563U (en) |
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2019
- 2019-12-16 CN CN201922264296.9U patent/CN212512563U/en active Active
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