CN212928194U - Vacuum suction system based on preposed dehumidification device - Google Patents
Vacuum suction system based on preposed dehumidification device Download PDFInfo
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- CN212928194U CN212928194U CN202020701506.6U CN202020701506U CN212928194U CN 212928194 U CN212928194 U CN 212928194U CN 202020701506 U CN202020701506 U CN 202020701506U CN 212928194 U CN212928194 U CN 212928194U
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- vacuum pumping
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- 238000007791 dehumidification Methods 0.000 title claims abstract description 21
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 23
- 238000005086 pumping Methods 0.000 claims abstract description 22
- 239000000203 mixture Substances 0.000 claims abstract description 20
- 238000001816 cooling Methods 0.000 claims description 14
- 238000011144 upstream manufacturing Methods 0.000 claims description 3
- 238000000926 separation method Methods 0.000 abstract description 3
- 239000007789 gas Substances 0.000 description 7
- 239000012224 working solution Substances 0.000 description 4
- 239000007788 liquid Substances 0.000 description 3
- 238000004134 energy conservation Methods 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 239000000567 combustion gas Substances 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000002209 hydrophobic effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 230000001502 supplementing effect Effects 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Abstract
The utility model belongs to the technical field of gas separation, in particular to a vacuum pumping system based on a preposed dehumidifier, which comprises a condenser, wherein the top of the condenser is connected with the vacuum pumping system through a gas-steam pipeline, the dehumidifier is additionally arranged on the gas-steam pipeline and is positioned between the condenser and the vacuum pumping system, the dehumidifier is also connected with the bottom of the condenser through a drain pipeline, and the drain pipeline is provided with a drain; and after the gas-steam mixture in the condenser enters the vacuum suction device through the dehumidification device, removing water vapor in the gas-steam mixture, and enabling the water vapor to flow back to the condenser through a drainage pipeline and be discharged from the bottom of the condenser. The utility model discloses the effectual moisture of getting rid of the gas-vapor mixture smuggleing secretly among the vacuum pumping system prevents that the impeller from producing and hits the water phenomenon, prevents simultaneously that water ring vacuum pump from producing cavitation, has avoided because the pump body vibration problem that hits water phenomenon and cavitation and arouse to make the efficiency of vacuum pump promote.
Description
Technical Field
The utility model belongs to the technical field of gaseous separation, especially, relate to a vacuum suction system based on leading dehydrating unit.
Background
Under the great trend of energy conservation and emission reduction, the energy-saving potential of a thermal power plant is certainly excavated, and a vacuum system serving as one of main thermodynamic systems of the thermal power plant has large influence on the energy consumption of a unit, generally, the heat consumption of the thermal power plant is about 1% when the vacuum of the unit is reduced by 1KPa, and the influence on the coal consumption is about 3 g/kWh.
Because the vacuum system of the power plant is complex and large, the vacuum system of the power plant in actual operation can not reach the designed value. On the one hand, in complex vacuum systems, there are situations in which outside air leaks in, and on the other hand, the vacuum suction systems of the units have many problems during operation.
The water-ring vacuum pump has the advantages of high vacuum degree, low noise, energy conservation, simple structure, convenient maintenance and the like, and is widely applied to air extraction equipment of a high-capacity thermal power unit condensing system. Most of them are flat disc type. In actual operation, the flat disc type water ring vacuum pump mainly has the following problems: firstly, moisture carried by a steam-gas mixture in the condenser enters the vacuum pump, which can cause the water hammer phenomenon of the impeller and even can cause the extreme situation that the impeller has cracks or fractures. Secondly, when the running time of the vacuum pump is longer, the temperature of working liquid in the pump is increased by the entering hot steam along with the increase of the steam content in the steam-gas mixture in the pump, so that the working liquid is vaporized, and the vacuum pump generates cavitation. And thirdly, the body vibrates violently due to water hammer, rotor impeller cavitation and working liquid cavitation. And fourthly, energy consumption waste caused by high exhaust temperature of the vacuum pump due to the steam extraction gas-steam mixture.
The traditional vacuum pump working solution cooling scheme (such as a cooling water added refrigerating device scheme, a working solution added refrigerating device scheme, a water supplementing added refrigerating device scheme and the like) only focuses on treatment after the temperature of the working solution rises, does not essentially prevent and treat the temperature rise of the working solution, and has the key that one of the problems caused by excessive moisture carried in a vapor-gas mixture at a suction port of a vacuum pump cannot be effectively solved. In order to solve the problem, the utility model provides a vacuum suction system based on leading dehydrating unit.
SUMMERY OF THE UTILITY MODEL
The utility model provides a vacuum suction system based on leading dehydrating unit, aim at effectively gets rid of the vapor that vacuum suction system carried to the water hammer of vacuum pump is turbid in solving vacuum suction, and working fluid vaporization and pump body vibration scheduling problem, and then effectively improve the back of exerting oneself of pump, full play vacuum system's effect.
In order to achieve the above object, the utility model adopts the following technical scheme:
a vacuum pumping system based on a front-mounted dehumidification device comprises a condenser, wherein the top of the condenser is connected with the vacuum pumping device through a gas-steam pipeline, the dehumidification device is additionally arranged on the gas-steam pipeline and is positioned at the upstream of the vacuum pumping device, the dehumidification device is also connected with the bottom of the condenser through a drainage pipeline, and the drainage pipeline is provided with the steam trap;
and after the gas-steam mixture in the condenser enters the vacuum suction device through the dehumidification device, removing water vapor in the gas-steam mixture, and enabling the water vapor to flow back to the condenser through a drainage pipeline and be discharged from the bottom of the condenser.
Further, the dehumidifying device is one of a centrifugal dehumidifying device, a grid plate type dehumidifying device or a honeycomb type dehumidifying device.
Further, the condenser is one of a condenser of a wet cooling turbo generator set or a condenser of an air cooling unit, and the condenser of the air cooling unit comprises a condenser of a direct air cooling unit or a condenser of an indirect air cooling unit.
Furthermore, the number of the condensers is two or three, and the pressure of the condensers is equal backpressure or unequal backpressure.
Further, the vacuum pumping device is a device provided with a water ring vacuum pump.
Furthermore, a valve is arranged on the gas-steam pipeline.
Further, the steam trap is one of a mechanical type steam trap or a thermostatic type steam trap.
Compared with the prior art, the utility model discloses following beneficial effect has:
the utility model discloses an in the middle of the gas steam pipeline that condenser and vacuum suction device are connected, add dehydrating unit, the condenser combustion gas steam mixture, through dehydrating unit, dehydrating unit comes out the vapor separation in with the gas steam mixture, effectively gets rid of the vapor in the gas steam mixture of condenser, and the gas steam mixture after the dehumidification is discharged through vacuum suction device. The dehumidification device is also connected with the steam condenser through a drain pipeline, the drain pipeline is provided with the steam trap, and the water vapor removed by the dehumidification device flows back to the steam condenser through the drain pipeline and is discharged from the bottom of the steam condenser. Compared with the prior art, the utility model discloses the moisture that the effectual gas-steam mixture of getting rid of among the vacuum pumping system smugglied secretly prevents that the impeller from producing and hits the water phenomenon, prevents simultaneously that water ring vacuum pump from producing cavitation, has avoided because the pump body vibration problem that hits water phenomenon and cavitation and arouse to make the efficiency of vacuum pump promote.
Drawings
Fig. 1 is a schematic connection diagram of a vacuum pumping system based on a pre-dehumidification device.
Wherein: 1-a condenser; 2-a dehumidifying device; 3-vacuum suction device; 4-a steam trap; 5-a gas-steam pipeline; 6-a hydrophobic pipeline.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Example 1:
as shown in fig. 1, a vacuum pumping system based on a front-mounted dehumidifier includes a condenser 1, the top of the condenser 1 is connected to a vacuum pumping device 3 through a gas-steam pipeline 5, the dehumidifier 2 is added on the gas-steam pipeline 5, the dehumidifier 2 is located at the upstream of the vacuum pumping device 3, the dehumidifier 2 is further connected to the bottom of the condenser 1 through a drain pipeline 6, and the drain pipeline 6 is provided with a drain 4.
A valve is arranged between the condenser 1 and the dehumidifying device 2 and is used for controlling the inlet amount of the gas-steam mixture. The condenser 1 is a condenser of 2 direct air cooling units, the dehumidifier 2 is a centrifugal dehumidifier, and the vacuum pumping device 3 is internally provided with a water ring vacuum pump.
The utility model discloses an application principle does:
and the gas-steam mixture in the condenser 1 enters a gas-steam pipeline 5, water vapor in the gas-steam mixture is separated through the dehumidifying device 2, and the separated gas-steam mixture is continuously discharged through the vacuum suction device. The separated water vapor enters the condenser 1 through a steam trap on the steam trap pipeline and is discharged from the bottom of the condenser 1.
As other embodiments of the present invention:
the dehumidifier 2 can be one of a grid plate type dehumidifier or a honeycomb type dehumidifier, the condenser 1 can be three condenser of a wet cooling steam turbine generator unit or an indirect air cooling unit, and the pressure of the condenser is equal back pressure or unequal back pressure.
The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and its practical application, to thereby enable others skilled in the art to best understand and utilize the invention. The present invention is limited only by the claims and their full scope and equivalents.
Claims (7)
1. The utility model provides a vacuum pumping system based on leading dehydrating unit, includes condenser (1), vacuum pumping device (3), its characterized in that are connected through gas steam pipeline (5) in the top of condenser (1): a dehumidification device (2) is additionally arranged on the gas-steam pipeline (5), the dehumidification device (2) is positioned at the upstream of the vacuum suction device (3), the dehumidification device (2) is also connected with the bottom of the condenser (1) through a drainage pipeline (6), and a drainage device (4) is arranged on the drainage pipeline (6);
after the gas-steam mixture in the condenser (1) enters the vacuum suction device (3) through the dehumidification device (2), the water vapor in the gas-steam mixture is removed, and the water vapor flows back to the condenser (1) through the drainage pipeline (6) and is discharged from the bottom of the condenser (1).
2. The pre-dehumidification device-based vacuum pumping system as set forth in claim 1, wherein: the dehumidifying device (2) is one of a centrifugal dehumidifying device, a grid plate type dehumidifying device or a honeycomb type dehumidifying device.
3. The pre-dehumidification device-based vacuum pumping system as set forth in claim 1, wherein: the condenser (1) is one of a condenser of a wet-cooling turbo generator set or a condenser of an air cooling unit, and the condenser of the air cooling unit comprises a condenser of a direct air cooling unit or a condenser of an indirect air cooling unit.
4. The pre-dehumidification device-based vacuum pumping system as set forth in claim 1, wherein: the number of the condensers (1) is two or three, and the pressure of the condensers is equal or unequal.
5. The pre-dehumidification device-based vacuum pumping system as set forth in claim 1, wherein: the vacuum suction device (3) is a device provided with a water ring vacuum pump.
6. The pre-dehumidification device-based vacuum pumping system as set forth in claim 1, wherein: and a valve is arranged on the gas-steam pipeline (5).
7. The pre-dehumidification device-based vacuum pumping system as set forth in claim 1, wherein: the steam trap (4) is one of a mechanical type steam trap or a thermostatic type steam trap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020701506.6U CN212928194U (en) | 2020-04-30 | 2020-04-30 | Vacuum suction system based on preposed dehumidification device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020701506.6U CN212928194U (en) | 2020-04-30 | 2020-04-30 | Vacuum suction system based on preposed dehumidification device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212928194U true CN212928194U (en) | 2021-04-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020701506.6U Active CN212928194U (en) | 2020-04-30 | 2020-04-30 | Vacuum suction system based on preposed dehumidification device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212928194U (en) |
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2020
- 2020-04-30 CN CN202020701506.6U patent/CN212928194U/en active Active
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| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20240415 Address after: 100040 1515, Floor 15, Building 1, Yard 6, Yinhe Street, Shijingshan District, Beijing Patentee after: China Datang Corporation Science and Technology General Research Institute Ltd. Country or region after: China Patentee after: Datang (Beijing) Energy Technology Co.,Ltd. Address before: 100043 West District, building 18, Second District of Yuquan Xili, Shijingshan District, Beijing Patentee before: CHINA DATANG GROUP SCIENCE AND TECHNOLOGY RESEARCH INSTITUTE CO., LTD. THERMAL POWER TECHNOLOGY Research Institute Country or region before: China |