CN215337905U - Cold-storage water/ice type steam-jet water ring vacuum unit - Google Patents
Cold-storage water/ice type steam-jet water ring vacuum unit Download PDFInfo
- Publication number
- CN215337905U CN215337905U CN202023049949.0U CN202023049949U CN215337905U CN 215337905 U CN215337905 U CN 215337905U CN 202023049949 U CN202023049949 U CN 202023049949U CN 215337905 U CN215337905 U CN 215337905U
- Authority
- CN
- China
- Prior art keywords
- water
- condenser
- cold
- pipeline
- tank
- 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.)
- Active
Links
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/14—Thermal energy storage
Landscapes
- Jet Pumps And Other Pumps (AREA)
Abstract
The utility model discloses a cold storage water/ice type steam injection water ring vacuum unit which comprises a condenser group and a cold storage tank arranged on the ground, wherein the condenser group is arranged on the cold storage tank, and a plurality of condensers are sequentially stacked in the vertical direction. All the condensers are connected in series in sequence through pipelines to form a gas circulation channel; the exhaust port of the condenser at the lowest layer is communicated with an external pipeline and used for exhausting gas to the atmosphere; and the spraying device in the uppermost condenser is communicated with the cold accumulation tank pipeline and is used for conveying cold water or ice water mixture in the cold accumulation tank to the spraying device. And between two adjacent condensers, the water outlet of the condenser on the upper layer is connected with the water inlet pipeline of the condenser on the lower layer, and is used for providing spraying water for the spraying device on the lower layer. By using the vacuum unit, a load platform is not required to be built, and the cost of millions of yuan is saved; and the cooling water is supplied to each condenser by adopting a low-temperature water and step water using mode at the temperature of 1-20 ℃, so that the energy-saving effect is obvious.
Description
Technical Field
The utility model belongs to the technical field of cold accumulation energy storage and vacuum acquisition, and particularly relates to a cold accumulation water/ice type steam jet water ring vacuum unit.
Background
The molten steel vacuum degassing device comprises an RH vacuum degassing furnace, a VD vacuum degassing furnace, a VOD vacuum degassing oxygen blowing furnace and a VC vacuum degassing casting furnace. The vacuum units matched with the molten steel vacuum degassing device are commonly adopted as follows: full steam injection vacuum unit, steam injection water ring vacuum unit and Roots mechanical vacuum unit.
The full steam injection vacuum unit has wide application and stable performance. But the consumption of steam and cooling water is large, the pollution of the cooling water is serious, and the investment of a turbid circulating water pool and an elevated platform is large. And for the steam jet water ring vacuum unit, the energy consumption is reduced to some extent because the water ring vacuum pump is adopted as the backing pump. The use effect is good in recent ten years, but the defects that the cooling water is seriously polluted and the investment of a turbid circulating water pool and an elevated platform is large are still not solved. The application of the Roots vacuum unit is gradually increased in recent years, the Roots vacuum unit is mainly driven by electric power, and high-pressure steam is not needed. But there are some uncertainties that are prone to failure, resulting in unstable vacuum performance.
The steam jet water ring vacuum unit has two forms of 4-stage jet and water ring pump and 3-stage jet and water ring pump. The difference lies in that a two-stage booster pump or a three-stage booster pump is arranged in front of a C1 condenser, the common point is that the water inlet temperature of the C1 condenser is 35 ℃, in most areas of China, the lowest temperature of circulating water obtained by cooling by a cooling tower in summer is about 35 ℃, and in some high-temperature and high-humidity areas, ice blocks are put into a cooling water pool in summer for cooling, so that the circulating water with the temperature of 35 ℃ is obtained, and the vacuum degree required by normal production is ensured.
For the C1 condenser with the inlet water temperature of 35 ℃, when the vacuum degree of the vacuum tank is 67Pa, the total compression ratio of the two-stage booster pump and the three-stage booster pump is completely the same, the consumption of steam and cooling water is not much different, and the consumption of steam and cooling water is large. At present, the total steam injection vacuum unit is at the vacuum degree of 67Pa, 800kg/hThe median of the international advanced energy consumption indexes is 28t/h of steam consumption (35 kg of steam per kilogram of dry air per unit consumption), and the quantity of cooling water is 1600m m3/h (unit consumption 2 m)3Cooling water/kg dry air), the steam jet water ring vacuum unit is 20t/h (25 kg steam per unit consumption), and the cooling water consumption is 1450m3H/h (unit consumption 1.8 m)3Cooling water/h).
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that aiming at the defects of the prior art, the cold storage water/ice type steam injection water ring vacuum unit is provided, a load platform is not required to be built, and the cost of millions of yuan is saved; and the cooling water is supplied to each condenser by adopting a low-temperature water and step water using mode at the temperature of 1-20 ℃, so that the energy-saving effect is obvious.
In order to solve the technical problem, the utility model adopts the technical scheme that the cold storage water/ice type steam injection water ring vacuum unit comprises a condenser group and a cold storage tank for being placed on the ground, wherein the condenser group is arranged on the cold storage tank and consists of a plurality of condensers, and the plurality of condensers are sequentially stacked in the vertical direction.
Each condenser is a vacuum container and is provided with an air inlet, an air outlet, a water inlet and a water outlet; spraying devices are arranged in the spraying device.
The condenser at the uppermost layer is connected with the vacuum tank through a pipeline and used for inputting gas in the vacuum tank into the vacuum tank, and the condensers are sequentially connected in series through the pipeline to form a gas circulation channel; the exhaust port of the condenser at the lowest layer is communicated with an external pipeline and used for exhausting gas to the atmosphere; and the spraying device in the uppermost condenser is communicated with the cold accumulation tank pipeline and is used for conveying cold water or ice water mixture in the cold accumulation tank to the spraying device.
Between two adjacent condensers, the water outlet of the upper condenser is connected with the water inlet pipeline of the lower condenser for providing spraying water for the lower spraying device; or the water outlet of the condenser at the uppermost layer is connected with the water inlets of the condensers at other layers through pipelines and used for providing spraying water for the spraying devices at all layers; the condenser at the uppermost layer is removed, and the bottoms of the condensers at other layers are communicated with the cold accumulation tank and used for conveying the sprayed water to the cold accumulation tank.
The device also comprises refrigeration equipment for cooling the sprayed water in the cold storage tank to low-temperature water or ice-water mixture.
Further, the temperature of the low-temperature water or the ice-water mixture is 1-20 ℃.
Further, the refrigeration equipment comprises: the heat exchange pipe is used for being placed in the cold storage tank and cooling the sprayed water; the two ends of the refrigerant channel of the refrigerating machine are correspondingly connected with the two ends of the heat exchange tube to form a circulation loop for conveying the cooled refrigerant into the heat exchange tube; the two ends of the water channel are communicated with the cooling tower pipeline to form a circulation loop for cooling the refrigerant passing through the refrigerant channel.
And the cold energy storage tanks are communicated with the cold accumulation tank pipeline and used for storing and storing redundant low-temperature water or ice-water mixture in the cold tank.
Furthermore, two stages of booster pumps are connected in series between the vacuum tank and the condenser on the uppermost layer, and each booster pump is communicated with a steam distribution drum pipeline.
Furthermore, between two adjacent condensers, the connecting pipelines of the two condensing cavities of the upper-layer condenser are respectively connected with an injection pump, and each injection pump is communicated with the steam-distributing drum pipeline.
Furthermore, the bottom of the lowest condenser is communicated with the cold accumulation tank, and the cold accumulation tank is used as a water storage tank.
Furthermore, a water ring vacuum pump is arranged on a pipeline for communicating the exhaust port of the lowest condenser with the outside, and the pipeline is communicated with a water path of the water ring vacuum pump.
Further, in the condenser group, there are 3 condensers, including: the condenser C1, the condenser C2 and the condenser C3 are arranged vertically upwards and sequentially from top to bottom in a superposed mode, and the condenser C3 is arranged on the cold storage tank.
Furthermore, the exhaust port of the condenser C2 is communicated with the intake port of the condenser C3 through two parallel pipelines, and an S4A injection pump and an S4B injection pump are correspondingly connected to the two pipelines.
The utility model has the following advantages: (1) each condenser stacks in proper order in vertical direction, and the condenser of lower floor is placed on the cold-storage tank, has satisfied in vertical direction, and the unpowered transport of upper water to the lower floor no longer need build the load platform, has saved the cost of millions yuan. (2) The cooling water is supplied to each condenser by adopting a low-temperature water and step water using mode of 1-20 ℃, the total compression ratio of a booster pump in front of the uppermost condenser is reduced, the mixed gas discharged by an injection pump in front of the condenser is reduced, the steam consumption is reduced by about 60%, the cooling water consumption is reduced by about 70%, and the energy-saving effect is obvious. (3) The low-temperature water in the cold storage tank is used for carrying out primary heat exchange in the condenser at the uppermost layer, primary heat exchange water is conveyed to the condensers at other layers by parallel multi-way pipelines and is used as cooling water in the condensers at other layers, the cooling water is discharged into the cold storage tank after heat exchange, and forms a circulating closed loop, so that a huge turbid circulating water pool is cancelled, the investment cost is saved, and the pollution is also reduced. (4) The cold energy storage tank is arranged, so that cold can be stored at night in the valley, the solar energy storage tank works in the daytime, the peak clipping and valley filling are realized, low-price electric power is used, and the cost is saved.
Drawings
FIG. 1 is a schematic structural diagram of an energy storage type steam injection water ring vacuum unit according to the present invention;
wherein: 1. a vacuum tank; 2. a coarse dust collector; 3. a fine dust collector; 4. a master cut-off valve; 5, S1 booster pump; 6, S2 booster pump; S4B jet pump; 8. a valve; a C1 condenser; 10, S3 jet pump; 11. a first regulating valve; a C2 condenser; 13. a second regulating valve; 14. a valve; 15. an exhaust gas flow meter; 17. a water ring vacuum pump; 18. a cooling tower; 20. a refrigerator; 21. a refrigerant pump; 22. a coolant tank; 23. a water pump; 24, S4A jet pump; 25, C3 condenser; 26. a water pipe; 27. a cold storage tank; 28. a pipeline; 29. a steam-separating drum and 30-two pipelines.
Detailed Description
The utility model relates to an energy storage type steam injection water ring vacuum unit, as shown in figure 1, comprising: including condenser group with be used for placing in a cold storage tank 27 on ground, condenser group sets up on cold storage tank 27, and comprises a plurality of condensers, and a plurality of condensers stack in proper order in vertical direction. The condenser group is vertically arranged, and because each condenser has a certain height, water in the condenser is conveyed to the cold accumulation tank 27 through a pipeline under the action of gravity, and the cold accumulation tank 27 also serves as a height supporting table. The condenser set does not need to be additionally built on a bearing platform, the conventional flat condenser needs to be modified on a heavy-load platform with the height of 11 meters, and the required cost is millions of yuan. Therefore, the condenser set in the utility model can save cost of millions of yuan only by overloading one platform.
Each condenser is a vacuum container and is provided with an air inlet, an air outlet, a water inlet and a water outlet; each condenser is internally provided with a spraying device. The spraying device is used for spraying low-temperature water and is connected with the water inlet pipeline. The water inlet is generally arranged at the upper part or the middle part of each condenser. The water outlet is positioned at the lower part. The air inlet and the air outlet have no strict position requirement, and the air inlet is generally arranged in the middle, while the air outlet is arranged at the upper part.
The condenser at the uppermost layer is connected with the vacuum tank 1 through a pipeline and used for inputting the gas in the vacuum tank 1 into the vacuum tank, and the condensers are sequentially connected in series through the pipeline to form a gas circulation channel; and the exhaust port of the condenser at the lowest layer is communicated with an external pipeline and used for exhausting gas to the atmosphere. When the gas pipeline in the vacuum tank 1 is used for conveying, the pressure of the gas inlet is ensured to be satisfied when the gas pipeline reaches the gas inlet of the uppermost condenser.
Because the gas in the vacuum tank 1 is carried by the power steam to flow, when the gas reaches the uppermost condenser, the required compression ratio is reduced because low-temperature water is used as the spraying water for the uppermost condenser. And because each condenser pipeline is connected in series, the consumption of power steam before the condenser at the uppermost layer is reduced.
The spray device in the uppermost condenser is communicated with the cold accumulation tank 27 through a pipeline and is used for conveying the low-temperature water in the cold accumulation tank 27 to the spray device. The temperature of the low-temperature water is 1-20 ℃.
Between two adjacent condensers, the water outlet of the upper condenser is connected with the water inlet pipeline of the lower condenser for providing spraying water for the lower spraying device; or the water outlet of the condenser on the uppermost layer is connected with the water inlets of the condensers on other layers through pipelines and used for providing spraying water for the spraying devices on each layer; the condenser at the uppermost layer is removed, and the bottoms of the condensers at other layers are communicated with the cold accumulation tank 27 and used for conveying the sprayed water to the cold accumulation tank 27. The bottom of the lowermost condenser is communicated with a cold storage tank 27, and the cold storage tank 27 is used as a water storage tank. Vertical pipelines are arranged in the condensers of other layers to convey the sprayed water to the cold accumulation tank 27.
The temperature of the low-temperature water is 1-20 ℃, the water temperature generally rises by 5-10 after primary heat exchange, namely the water temperature after the primary heat exchange is about 6-30 ℃, so that the water after the primary heat exchange is ensured to be continuously used as the heat exchange water of the next condenser, and then the water after the primary heat exchange is conveyed to the spraying devices in other layers of condensers through parallel pipelines to be mixed and heat-exchanged with steam in the condensers of the layers. Only the condenser at the uppermost layer needs to input low-temperature water through a pipeline, and the low-temperature water is used in sequence according to gradient, so that the using amount of the low-temperature water is reduced.
In the operation of each of the above condensers, the low-temperature water in the cold storage tank 27 is used as cooling water, and the heat exchange is performed in the uppermost condenser, and the water for the heat exchange is sent to the other condensers in the respective layers in parallel by a plurality of pipelines, and is discharged into the cold storage tank 27 after the heat exchange. The cooling water forms a circulating closed loop, and the water after secondary heat exchange is cooled and then used as cooling water to be conveyed to the spraying device of the uppermost condenser through a pipeline again. Because a circulation loop is formed, the treatment capacity of the water after heat exchange is constant and cannot be increased along with the change of time, and a cooling water treatment tank does not need to be additionally arranged. And the precipitate in the heat-exchanged water settles to the bottom in the cold storage tank 27 and is periodically treated. The investment cost is saved, and the pollution is also reduced.
And the cooling device is used for cooling the sprayed water in the cold storage tank 27 to cold water or ice-water mixture. In the cold storage tank 27, due to the density difference between the cold water and the hot water, the cold water or the ice water mixture and the water after heat exchange are automatically layered in the cold storage tank 27 or are layered by arranging a partition plate, the cold water or the ice water mixture is positioned at the lower part in the cold storage tank 27, and the water after heat exchange is positioned at the upper part in the cold storage tank 27.
The refrigeration equipment comprises: the heat exchange tube comprises a snake-shaped part and a straight tube part, wherein the snake-shaped part is placed in the cold storage tank 27 to cool sprayed water.
The refrigerator 20 is provided with a refrigerant channel, two ends of which are correspondingly connected with two ends of the heat exchange tube to form a circulation loop for conveying the cooled refrigerant into the heat exchange tube; the two ends of the water channel are communicated with the cooling tower 18 pipeline to form a circulation loop for cooling the refrigerant passing through the refrigerant channel.
And the cold energy storage tanks are communicated with the cold accumulation tank 27 through pipelines. Since the electricity rate is low during the electricity consumption valley period in the evening, enough low-temperature water or ice-water mixture can be prepared by the refrigeration equipment and stored in a plurality of cold energy storage tanks during the period. During peak periods of electricity consumption, the refrigeration equipment stops working and uses stored cold water or ice-water mixtures. During peak periods of electricity consumption, the refrigeration equipment stops working and uses stored low temperature water or ice water mixture.
Two stages of booster pumps are connected in series between the vacuum tank 1 and the condenser on the uppermost layer, each booster pump is communicated with a steam distribution drum 29 through a pipeline, a steam source is stored in the steam distribution drum 29 and used as power steam to be mixed with gas led out from the vacuum tank 1, and the pressure is increased so as to carry the gas in the vacuum tank 1 to be led into the condenser on the uppermost layer. And between two adjacent condensers, connecting pipelines of the two condensers are respectively connected with an injection pump, and each injection pump is communicated with a pipeline of the steam-dividing drum 29. The temperature of the adopted cold water or ice water mixture is 1-20 ℃, so the pressure requirement of the inlet opening can be met after the two-stage booster pump is adopted for boosting, and the required steam pressure is lower than that of water at 35 ℃ at the temperature of 1-20 ℃, so that the steam consumption is reduced. And the connecting pipelines between the two adjacent condensers and between the exhaust port and the air inlet are respectively connected with an injection pump.
One embodiment of the present invention is shown in fig. 1, in a condenser group, there are 3 condensers, including: the condenser 9 of C1, the condenser 12 of C2 and the condenser 25 of C3 that are vertically upward, from top to bottom superpose and set up sequentially, the condenser 25 of C3 is placed on cold-storage tank 27, and communicate with cold-storage tank 27; each condenser is provided with an air inlet, an air outlet, a water inlet and a water outlet. The air inlet and the water inlet are both arranged on the upper part of the condenser, and each water inlet is communicated with the spraying device pipeline in the corresponding cavity. The exhaust port does not have a strict position requirement.
The water outlet of the condenser 9 of the C1 is communicated with the spraying devices of the condenser 12 of the C2 and the condenser 25 of the C3 in parallel; the spray water device of the condenser 9 of C1 is connected with the vacuum tank 1 by a pipeline, and the exhaust port of the spray water device is communicated with the air inlet pipeline of the condenser 12 of C2.
The exhaust port of the condenser 12 of C2 is connected to the air inlet pipeline of the condenser 25 of C3, and the water outlet thereof is communicated with the pipeline of the cold storage tank 27. The concrete mode is that a communicating pipe is vertically arranged at the bottom of the C2 condenser 12, the communicating pipe penetrates through the C3 condenser 25, the end part of the communicating pipe penetrates into the cold accumulation tank 27, and the bottom of the C3 condenser 25 is communicated with the cold accumulation tank 27.
In this embodiment, the condensers are stacked in order in the vertical direction, the condenser at the lowermost layer is placed on the cold storage tank 27, and each condenser and the cold storage tank 27 have a certain height, and the transportation of cold water in each layer of condenser is satisfied under the height of the condenser. The load platform for bearing the condenser and the cold accumulation tank 27 is not required to be built, and the cost is saved. The cost for constructing a load platform with the area of 300 square meters and the height of about 22 meters is about 200 tens of thousands.
The vacuum tank 1 is connected to the air inlet pipe of the condenser 9 of C1, and the two-stage booster pump, i.e., the S1 booster pump 5 and the S2 booster pump 6, are connected in series to the pipe. The S1 booster pump 5 and the S2 booster pump 6 are both connected with the steam-separating drum 29 through pipelines, and the steam source pipeline is conveyed to each booster pump to be used as power steam. The gas in the vacuum tank 1 sequentially passes through the coarse dust collector 2 and the fine dust collector 3, and the main stop valve 4 is installed at the outlet of the fine dust collector 3. Then, the gas passes through the S1 booster pump 5 and the S2 booster pump 6 in sequence, and in each booster pump, the gas is mixed with the motive steam and boosted, and is led out from the outlet of the S2 booster pump 6 to reach the gas pressure required by the inlet of the uppermost condenser.
The exhaust port of the condenser 25 of C3 is connected to the inlet line of each water ring vacuum pump 17, and is exhausted to the atmosphere through the exhaust line 16 via the water ring vacuum pump 17. An exhaust gas flowmeter 15 is provided in the extraction duct 16. The water path of the water ring vacuum pump is communicated with the upper part of the cold accumulation tank 27. The air exhaust capacity of the water ring vacuum pump 17 has a large relationship with the temperature of the inlet water, and low-temperature water is adopted to ensure that the water ring vacuum pump has better vacuum air exhaust capacity.
When the low-temperature water in the cold storage tank 27 is in operation, the low-temperature water is pumped into the top of the C1 condenser 9 through the water pump 23, is sprayed by the spraying device, is mixed with the gas and the power steam entering the C1 condenser 9, the temperature of the low-temperature water is slightly increased after condensation, and the low-temperature water is discharged from the bottom of the C1 condenser 9 in two paths. One path enters a spraying device of a C2 condenser 12 through a first regulating valve 11, and the other path enters a spraying device of a C3 condenser 25 through a second regulating valve 13, is mixed with mixed gas entering the C2 condenser 12 and the C3 condenser 25, and is condensed. Meanwhile, the water in the condenser 12 of the C2 enters the cold storage tank 27 through the water pipe 26, and the heat-exchanged water in the condenser 25 of the C3 directly flows into the cold storage tank 27. After the cold accumulation tank 27 is cooled, low-temperature water is obtained again and then pumped into the condenser 9 of C1, and the working process is repeated for recycling.
The water after the heat exchange in the cold storage tank 27 is cooled by refrigeration equipment, and the refrigeration equipment includes: and the heat exchange tube consists of a snake-shaped part and straight tube parts at two ends, and the snake-shaped part is used for being placed in the heat-exchanged water in the cold storage tank 27. The coolant tank 22 is disposed outside the cold storage tank 27, and has an outlet and an inlet, and the inlet is connected to one end of the heat exchange tube by a pipe. A refrigerating machine 20, the cooling inlet of which is communicated with the outlet pipeline of the refrigerant water tank 22, and the cooling outlet of which is communicated with the pipeline at the lower part of the cold accumulation tank 27, and is used for cooling the water after heat exchange to low-temperature water or ice and conveying the water to the lower part of the cold accumulation tank 27 through the pipeline; both ends of the cooling pipeline of the refrigerator 20 are connected with the cooling tower 16 by pipelines to form a loop.
The refrigerator 20 is a dual-operation refrigerator, and the refrigerator 20 may store sufficient low-temperature water or ice-water mixture for the cold storage tank 27. Can ensure the circulating low-temperature water consumption of a molten steel vacuum degassing device or the low-temperature water consumption in the daytime. And a plurality of cold energy storage tanks can be arranged, wherein each cold energy storage tank is a closed vacuum container and is also communicated with the pipeline in the cold accumulation tank 27, so that cold water or ice-water mixture in the cold accumulation tank 27 is conveyed and stored to each cold energy storage tank through the pipeline. Enough cold water or ice-water mixture is prepared at night when electricity is used in a valley, and the redundant cold water or ice-water mixture is stored in the cold energy storage tank. During daytime peak of electricity consumption, the stored cold water or ice-water mixture is used for peak clipping and valley filling, and low-price electric power is economical and practical.
The cold storage water/ice type steam jet water ring vacuum unit in the embodiment is used for treating molten steel, the molten steel vacuum degassing devices are various and comprise RH, VD, VOD, VC and the like, different molten steel vacuum degassing devices need vacuum tanks 1 with different structures and volumes according to different qualities of molten steel to be treated, and the vacuum tanks 1 are provided with covers which are closed. The cold storage tank 27 stores therein enough low-temperature water or ice-water mixed liquid.
The working process is as follows: the water ring vacuum pumps 17 are turned on, and the refrigerator 20 is turned on to lower the water in the cold storage tank 27 to the desired low temperature water. The molten steel ladle is suspended in the vacuum tank 1 and sealed. The respective condensers and the water ring vacuum pump 17 are first supplied with low-temperature water by a water pump 23. Valve 14 is then opened to bring the water ring vacuum pump 17 to the desired pressure. The S4A injector 24 and the S4B injector 7 were turned on to bring the pressure in the vacuum tank 1 to 8Kpa, and the S4B injector 7 was turned off. And (3) continuing to start the S3 jet pump, the S2 booster pump and the S1 booster pump 5 to enable the vacuum tank 1 to reach 67Pa, and keeping the vacuum degree of 67Pa for 10-30 minutes, at the moment, finishing the work of the molten steel vacuum degassing device, opening a vent valve on a pipeline between the vacuum tank 1 and the coarse dust collector 2, and then closing the S1 booster pump 5, the S2 booster pump 6, the S3 jet pump 10, the S4 jet pump 24, the valve 14, the water ring vacuum pump 17 and the water pump 23 in sequence.
In the molten steel vacuum degassing device processing procedure, the waste gas that produces at vacuum tank 1 has carried a lot of dusts secretly, and the temperature reaches about 1000 degrees, and they get into coarse dust remover 2 through two pipelines 30, and at first the waste gas is cooled down, and most millimeter level dust subsides in coarse dust remover 2 bottoms, and waste gas gets into smart dust remover 3, and a few millimeter level dust and most micron level dust are continued to be cooled down and subside in smart dust remover bottom. The rest of the micro-scale dust enters the S1 booster pump 5, the S2 booster pump 6 and the C1 condenser 9, is carried into the cold storage tank 27 by the low-temperature water, and is settled at the bottom and is periodically cleaned and discharged through a valve.
The most classical energy-saving theory of the steam jet vacuum unit is to arrange a condenser as soon as possible, and because the steam consumption of the C1 condenser is increased in a geometric progression according to the increase of the total compression ratio, the total compression ratio of the booster pump can be greatly reduced by arranging the C1 condenser by adopting low-temperature water, so that the steam consumption and the cooling water consumption are greatly reduced.
Claims (10)
1. The cold storage water/ice type steam injection water ring vacuum unit is characterized by comprising a condenser group and a cold storage tank (27) placed on the ground, wherein the condenser group is arranged on the cold storage tank (27) and consists of a plurality of condensers which are sequentially stacked in the vertical direction;
each condenser is a vacuum container and is provided with an air inlet, an air outlet, a water inlet and a water outlet; spraying devices are arranged in the spraying device;
the condenser at the uppermost layer is connected with the vacuum tank (1) through a pipeline and used for inputting gas in the vacuum tank (1) into the vacuum tank, and the condensers are sequentially connected in series through the pipeline to form a gas circulation channel; the exhaust port of the condenser at the lowest layer is communicated with an external pipeline and used for exhausting gas to the atmosphere;
the spraying device in the condenser at the uppermost layer is communicated with the cold storage tank (27) through a pipeline and is used for conveying cold water or ice water mixture in the cold storage tank (27) to the spraying device;
between two adjacent condensers, the water outlet of the upper condenser is connected with the water inlet pipeline of the lower condenser for providing spraying water for the lower spraying device; or the water outlet of the condenser on the uppermost layer is connected with the water inlets of the condensers on other layers through pipelines and used for providing spraying water for the spraying devices on each layer; the condenser at the uppermost layer is removed, and the bottoms of the condensers at other layers are communicated with the cold accumulation tank (27) and are used for conveying the sprayed water to the cold accumulation tank (27);
the system also comprises refrigeration equipment for cooling the sprayed water in the cold storage tank (27) to low-temperature water or ice-water mixture.
2. The cold-storage water/ice type steam injection water ring vacuum unit as claimed in claim 1, wherein the temperature of the low-temperature water or the ice-water mixture is 1-20 ℃.
3. A cold-storage water/ice type steam injection water ring vacuum unit as claimed in claim 2, wherein said refrigeration equipment comprises:
the heat exchange pipe is used for being placed in the cold storage tank (27) and cooling sprayed water;
the two ends of a refrigerant channel of the refrigerating machine (20) are correspondingly connected with the two ends of the heat exchange tube to form a circulation loop, and the refrigerating machine is used for conveying the cooled refrigerant into the heat exchange tube; the two ends of the water channel are communicated with a cooling tower (18) through pipelines to form a circulation loop for cooling the refrigerant passing through the refrigerant channel.
4. A cold-storage water/ice type steam injection water ring vacuum unit as claimed in claim 3, characterized by further comprising a plurality of cold energy storage tanks, each of which is in pipeline communication with the cold storage tank (27) for storing surplus low-temperature water or ice-water mixture in the cold storage tank (27).
5. The cold-storage water/ice type steam injection water ring vacuum unit as claimed in claim 4, wherein a two-stage booster pump is connected in series between the vacuum tank (1) and the condenser at the uppermost layer, and each booster pump is communicated with a pipeline of a steam-distributing drum (29).
6. The cold-storage water/ice type steam injection water ring vacuum unit as claimed in claim 5, wherein between two adjacent condensers, a jet pump is connected to each connecting pipeline of two condensing chambers of the upper condenser, and each jet pump is communicated with the pipeline of the steam-dividing drum (29).
7. A cold-storage water/ice type steam injection water ring vacuum unit as claimed in claim 5, characterized in that the bottom of the lowest condenser is connected to the cold-storage tank (27) and the cold-storage tank (27) is used as its water storage tank.
8. The cold-storage water/ice type steam injection water ring vacuum unit as claimed in claim 5, 6 or 7, wherein a water ring vacuum pump is disposed on a pipeline communicating the exhaust port of the lowest condenser with the outside, and the pipeline is communicated with a water channel of the water ring vacuum pump.
9. The cold-storage water/ice type steam injection water ring vacuum unit as claimed in claim 8, wherein in the condenser group, the number of the condensers is 3, comprising: the condenser comprises a C1 condenser (9), a C2 condenser (12) and a C3 condenser (25) which are vertically upwards and sequentially arranged from top to bottom in a superposed mode, wherein the C3 condenser (25) is arranged on the cold accumulation tank (27).
10. The cold-storage water/ice type steam injection water ring vacuum unit as claimed in claim 9, wherein the exhaust port of the C2 condenser (12) is connected with the intake port of the C3 condenser (25) through two parallel pipelines, and the two pipelines are correspondingly connected with the S4A injection pump (24) and the S4B injection pump (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023049949.0U CN215337905U (en) | 2020-12-17 | 2020-12-17 | Cold-storage water/ice type steam-jet water ring vacuum unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023049949.0U CN215337905U (en) | 2020-12-17 | 2020-12-17 | Cold-storage water/ice type steam-jet water ring vacuum unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215337905U true CN215337905U (en) | 2021-12-28 |
Family
ID=79545513
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023049949.0U Active CN215337905U (en) | 2020-12-17 | 2020-12-17 | Cold-storage water/ice type steam-jet water ring vacuum unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215337905U (en) |
-
2020
- 2020-12-17 CN CN202023049949.0U patent/CN215337905U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110455006B (en) | Waste heat recovery and energy cascade utilization coupling system of metallurgical oxygen plant | |
| CN205316560U (en) | Air conditioning system for data center that natural cooling and mechanical refrigeration are united | |
| CN206695421U (en) | LNG cold energy refrigerating circulatory devices | |
| CN108331618A (en) | A kind of 10MW compressed-air energy storages method and system | |
| CN201265955Y (en) | High temperature water heating system by waste heat recovery | |
| CN215337905U (en) | Cold-storage water/ice type steam-jet water ring vacuum unit | |
| CN112503987A (en) | Cold-storage water/ice type steam-jet water ring vacuum unit | |
| CN109990412B (en) | Data center air conditioning system combining mechanical refrigeration with natural cooling mode | |
| CN115369195B (en) | Waste heat recovery system of blast furnace slag flushing water and working method thereof | |
| CN217210021U (en) | Air separation pre-cooling system | |
| CN106352586A (en) | Double machine head heat source tower heat pump unit | |
| CN2916530Y (en) | Recovery of thermal-releasing ice cake making machine | |
| CN215724259U (en) | Cooling separation type evaporation cooling type air-cooled heat pump unit | |
| CN209848339U (en) | Waste heat pump concentration equipment | |
| CN206572983U (en) | A kind of temperature difference power cooling tower | |
| CN210242475U (en) | Vacuum pumping system capable of improving pumping capacity of vacuum pump | |
| CN101294502B (en) | Multifunctional vacuum firepower waterpower dual-power generation and water-lifting water distributing station | |
| CN209783040U (en) | Vacuum sublimation evaporation cold and heat energy separation heat supply or cold supply equipment | |
| CN209763383U (en) | Data center air conditioning system based on combination of natural cooling and mechanical refrigeration | |
| CN108120313A (en) | Integrated form circulating water cooling system and method | |
| CN110173312B (en) | Novel power plant cold end waste heat recycling system and method | |
| CN221408539U (en) | Energy storage power peak regulation system based on pumping storage and accompanying pressure storage | |
| CN220436840U (en) | Cascade utilizes ice making device of LNG cold energy | |
| CN205807620U (en) | A kind of circulating water heating system based on carbon dioxide heat-pump | |
| CN104913420A (en) | Novel inflatable chilled water storage system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |