CN110986616A - Direct air cooling unit working medium recovery device and method - Google Patents
Direct air cooling unit working medium recovery device and method Download PDFInfo
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- CN110986616A CN110986616A CN201911125772.7A CN201911125772A CN110986616A CN 110986616 A CN110986616 A CN 110986616A CN 201911125772 A CN201911125772 A CN 201911125772A CN 110986616 A CN110986616 A CN 110986616A
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Abstract
The invention discloses a working medium recovery device and method for a direct air cooling unit, and relates to the technical field of working medium recovery of power systems; the device comprises a bypass pipeline, a bypass valve, a steam inlet pipe, a steam inlet valve, a steam outlet pipe, a steam outlet valve, a heat exchanger, a cooling water outlet pipe, a cooling water inlet pipe, a water treatment device, a stop valve, a water seal pipe and a drain pipe which are sequentially connected and communicated, wherein the steam inlet pipe, the heat exchanger and the steam outlet pipe are sequentially connected and communicated; the method comprises the steps of using the device, closing the bypass valve, opening the steam inlet valve, the steam outlet valve and the stop valve, allowing the mixed gas to enter the heat exchanger, cooling and condensing to form condensed water, and allowing the condensed water to enter the drain recovery device; the method realizes the improvement of the working medium recovery efficiency of the air cooling unit through a bypass pipeline, a bypass valve, a condensing device, a drain recovery device and the like.
Description
Technical Field
The invention relates to the technical field of working medium recovery of an electric power system, in particular to a working medium recovery device and method of a direct air cooling unit.
Background
The direct air cooling technology is used as a cold source cooling technology, has the advantages of water saving, economy, safety and reliability compared with the wet cooling technology, and has wider and wider development prospect in the face of the problem of increasingly short water resources.
The exhaust steam of the direct air cooling unit, namely the exhaust steam of the low-pressure cylinder, is subjected to surface heat exchange and cooling in the air cooling condenser ACC by virtue of the axial flow fan, and is condensed into water, and then the water returns to a hot well or a condensation water tank and then enters a thermodynamic system to perform thermodynamic cycle again. In the process of cooling and condensing the exhaust steam of the unit in the air-cooled condenser ACC, the vacuumizing system can extract non-condensing gas and a certain amount of steam from a mixed flow area of the air-cooled condenser ACC, namely the mixed flow area contains the steam, the non-condensing gas and the condensed water; particularly in the winter anti-freezing stage, in order to prevent the freezing phenomenon of the ACC, the mixed flow area requires higher steam content to ensure the operating temperature of the ACC and ensure that the freezing phenomenon does not occur in the operation of the ACC. The part of steam is discharged in a mixed form of condensed water and wet steam through an air extraction pipeline, a water ring vacuum pump and a steam-water separator, so that the steam is not beneficial to recovery, working medium waste is caused, the production cost of enterprises is increased, and the sewage discharge flow is increased; meanwhile, the temperature of the steam-gas mixture is higher, particularly in summer, the steam-gas mixture is mixed with the working fluid and heats the working fluid after entering the water ring vacuum pump, and the working fluid is over-high in temperature and easily causes cavitation of the water ring vacuum pump or insufficient output, so that the working efficiency of the water ring vacuum pump is reduced. Therefore, the working fluid is changed with water when the vacuum pump is in operation, so that the working temperature of the working fluid is reduced, and the working efficiency of the vacuum pump is improved. This also causes further waste of the working fluid.
Therefore, the steam-gas separation device can be developed for not only performing steam-gas separation on the steam-gas mixture extracted from the ACC mixed flow area of the air-cooling condenser, but also condensing and recovering a large amount of steam; meanwhile, the temperature of air entering the vacuum pump can be reduced, and the working medium recovery system of the air cooling unit is necessary to avoid the adverse effect of high-temperature mixture on the work of the water ring vacuum pump.
Problems with the prior art and considerations:
how to solve the technical problem of improving the working medium recovery efficiency of the air cooling unit.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a working medium recovery device and method for a direct air cooling unit, and the working medium recovery efficiency of the air cooling unit is improved through a bypass pipeline, a bypass valve, a condensing device, a drain recovery device and the like.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows: a working medium recovery device of a direct air cooling unit comprises a bypass pipeline, a bypass valve and a condensing device which are arranged on the bypass pipeline, and a drain recovery device which is arranged on the condensing device, wherein the condensing device comprises a steam inlet pipe, a steam inlet valve, a steam outlet pipe, a steam outlet valve, a heat exchanger, a cooling water outlet pipe and a cooling water inlet pipe; the drainage recovery device comprises a water treatment device, a stop valve, a water seal pipe and a drainage pipe which are sequentially connected and communicated, wherein the water treatment device is arranged at the bottom of the heat exchanger and is connected and communicated with the steam side of the heat exchanger.
The further technical scheme is as follows: the air-cooled water pump is characterized by further comprising an air condenser, an air pumping pipeline and a water ring vacuum pump, wherein the mixed flow area of the air condenser, the air pumping pipeline, the bypass pipeline and the water ring vacuum pump of the air condenser are sequentially connected and communicated.
The further technical scheme is as follows: the water treatment device is fixedly connected to the bottom of the heat exchanger.
The further technical scheme is as follows: the water seal pipe is a U-shaped water seal pipe.
The further technical scheme is as follows: the heat exchanger is a tubular heat exchanger.
A method for recovering working medium of direct air cooling unit features that the by-pass valve is closed, the steam inlet valve, steam outlet valve and stop valve are opened, the mixed gas is introduced to heat exchanger and cooled to condense to form condensed water, and the condensed water is introduced to hydrophobic recovery unit.
The further technical scheme is as follows: the device also comprises a condensed water tank connected and communicated with the drainage recovery device, and condensed water flows into the condensed water tank sequentially through the water treatment device, the stop valve, the water seal pipe and the drainage pipe.
The further technical scheme is as follows: the air condenser mixed flow area, the air pumping pipeline, the bypass pipeline and the water ring vacuum pump of the air condenser are sequentially connected and communicated; the uncondensed gas enters the water ring vacuum pump set through the steam outlet pipe and is discharged.
The further technical scheme is as follows: the water treatment device is fixedly connected to the bottom of the heat exchanger.
The further technical scheme is as follows: the water seal pipe is a U-shaped water seal pipe, and the heat exchanger is a tubular heat exchanger.
Adopt the produced beneficial effect of above-mentioned technical scheme to lie in:
the first working medium recovery device of the direct air cooling unit comprises a bypass pipeline, a bypass valve and a condensing device which are arranged on the bypass pipeline, and a drain recovery device which is arranged on the condensing device, wherein the condensing device comprises a steam inlet pipe, a steam inlet valve, a steam outlet pipe, a steam outlet valve, a heat exchanger, a cooling water outlet pipe and a cooling water inlet pipe; the drainage recovery device comprises a water treatment device, a stop valve, a water seal pipe and a drainage pipe which are sequentially connected and communicated, wherein the water treatment device is arranged at the bottom of the heat exchanger and is connected and communicated with the steam side of the heat exchanger. According to the technical scheme, the working medium recovery efficiency of the air cooling unit is improved through the bypass pipeline, the bypass valve, the condensing device, the drainage recovery device and the like.
And secondly, the system also comprises an air condenser, an air pumping pipeline and a water ring vacuum pump, wherein the mixed flow area of the air condenser, the air pumping pipeline, the bypass pipeline and the water ring vacuum pump of the air condenser are sequentially connected and communicated. This technical scheme, it is good to install in advance, and it is more convenient to use.
Thirdly, the water treatment device is fixedly connected to the bottom of the heat exchanger. This technical scheme, the structure is more reasonable, and efficiency is higher.
Fourthly, the water seal pipe is a U-shaped water seal pipe. This technical scheme, the structure is more reasonable, and the price/performance ratio is better.
Fifthly, the heat exchanger is a tubular heat exchanger. This technical scheme, the structure is more reasonable, and the price/performance ratio is better.
And sixthly, the working medium recovery method of the direct air cooling unit is used, the bypass valve is closed, the steam inlet valve, the steam outlet valve and the stop valve are opened, the mixed gas enters the heat exchanger and is cooled and condensed to form condensed water, and the condensed water enters the drainage recovery device. According to the technical scheme, the method that the mixed gas enters the heat exchanger and is cooled and condensed to form condensed water, and the condensed water enters the drainage recovery device realizes the purpose of improving the working medium recovery efficiency of the air cooling unit.
And the seventh step, the system also comprises a condensed water tank which is connected and communicated with the drainage recovery device, and the condensed water flows into the condensed water tank through the water treatment device, the stop valve, the water seal pipe and the drainage pipe in sequence. This technical scheme, it is good to install in advance, and it is more convenient to use.
The eighth step, the system also comprises an air condenser, an air pumping pipeline and a water ring vacuum pump, wherein the mixed flow area of the air condenser, the air pumping pipeline, the bypass pipeline and the water ring vacuum pump of the air condenser are sequentially connected and communicated; the uncondensed gas enters the water ring vacuum pump set through the steam outlet pipe and is discharged. This technical scheme, it is good to install in advance, and it is more convenient to use.
And ninthly, the water treatment device is fixedly connected to the bottom of the heat exchanger. This technical scheme, the structure is more reasonable, and efficiency is higher.
Tenth, the water seal pipe is a U-shaped water seal pipe, and the heat exchanger is a tubular heat exchanger. This technical scheme, the structure is more reasonable, and the price/performance ratio is better.
See detailed description of the preferred embodiments.
Drawings
FIG. 1 is a structural view of embodiment 1 of the present invention;
FIG. 2 is a structural view of embodiment 2 of the present invention;
fig. 3 is a structural view of embodiment 3 of the present invention.
Wherein: the system comprises a bypass pipeline 1, a bypass valve 2, a steam inlet pipe 3, a steam inlet valve 4, a steam outlet pipe 5, a steam outlet valve 6, a tubular heat exchanger 7, a water treatment device 8, a stop valve 9, a water seal pipe 10U-shaped, a drain pipe 11, a cooling water outlet pipe 12, a cooling water inlet pipe 13, an air condenser mixed flow area 14, an air pumping pipeline 15, a water ring vacuum pump set 16 and a condensed water tank 17.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the application, its application, or uses. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application, but the present application may be practiced in other ways than those described herein, and it will be apparent to those of ordinary skill in the art that the present application is not limited to the specific embodiments disclosed below.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
The relative arrangement of the components and steps, the numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present application unless specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.
In the description of the present application, it is to be understood that the orientation or positional relationship indicated by the directional terms such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal" and "top, bottom", etc., are generally based on the orientation or positional relationship shown in the drawings, and are used for convenience of description and simplicity of description only, and in the case of not making a reverse description, these directional terms do not indicate and imply that the device or element being referred to must have a particular orientation or be constructed and operated in a particular orientation, and therefore, should not be considered as limiting the scope of the present application; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.
Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and the terms have no special meanings unless otherwise stated, and therefore, the scope of protection of the present application is not to be construed as being limited.
Example 1:
as shown in figure 1, the invention discloses a working medium recovery device of a direct air cooling unit, which comprises a bypass pipeline 1, a bypass valve 2 and a condensing device which are fixed on the bypass pipeline 1, and a drain recovery device which is fixed on the condensing device, the condensing device comprises a steam inlet pipe 3, a steam inlet valve 4, a steam outlet pipe 5, a steam outlet valve 6, a heat exchanger, a cooling water outlet pipe 12 and a cooling water inlet pipe 13, the steam inlet pipe 3, the heat exchanger and the steam outlet pipe 5 are sequentially communicated, the inlet end of the steam inlet pipe 3 is communicated with the bypass pipeline 1 at one end of the bypass valve 2, the outlet end of the steam outlet pipe 5 is communicated with a bypass pipeline 1 at the other end of a bypass valve 2, the steam inlet valve 4 is fixed on the steam inlet pipe 3, the steam outlet valve 6 is fixed on the steam outlet pipe 5, and the cooling water inlet pipe 13, the heat exchanger and the cooling water outlet pipe 12 are sequentially connected and conducted; the drainage recovery device comprises a water treatment device 8, a stop valve 9, a water seal pipe and a drainage pipe 11 which are sequentially connected and communicated, wherein the water treatment device 8 is fixed at the bottom of the heat exchanger and is connected and communicated with the steam side of the heat exchanger.
The water treatment device is fixedly connected to the bottom of the heat exchanger.
The water seal pipe is a U-shaped water seal pipe 10.
The heat exchanger is a tubular heat exchanger 7.
Example 2:
As shown in figure 2, the invention discloses a working medium recovery device of a direct air cooling unit, which comprises a bypass pipeline 1, a bypass valve 2 and a condensing device which are fixed on the bypass pipeline 1, a drain recovery device, an air condenser, an air extraction pipeline 15 and a water ring vacuum pump 16 which are fixed on the condensing device, wherein the condensing device comprises a steam inlet pipe 3, a steam inlet valve 4, a steam outlet pipe 5, a steam outlet valve 6, a heat exchanger, a cooling water outlet pipe 12 and a cooling water inlet pipe 13, the steam inlet pipe 3, the heat exchanger and the steam outlet pipe 5 are sequentially connected and conducted, the inlet end of the steam inlet pipe 3 is connected and conducted with the bypass pipeline 1 at one end of the bypass valve 2, the outlet end of the steam outlet pipe 5 is connected and conducted with the bypass pipeline 1 at the other end of the bypass valve 2, the steam inlet valve 4 is fixed on the steam inlet pipe 3, the steam outlet valve 6 is fixed on the steam outlet pipe 5, and, The heat exchanger and the cooling water outlet pipe 12 are sequentially connected and communicated; the drainage recovery device comprises a water treatment device 8, a stop valve 9, a water seal pipe and a drainage pipe 11 which are sequentially connected and communicated, wherein the water treatment device 8 is fixed at the bottom of the heat exchanger and is connected and communicated with the steam side of the heat exchanger.
The mixed flow area 14 of the air condenser, the air pumping pipeline 15, the bypass pipeline 1 and the water ring vacuum pump 16 are connected and communicated in sequence.
The water treatment device is fixedly connected to the bottom of the heat exchanger.
The water seal pipe is a U-shaped water seal pipe 10.
The heat exchanger is a tubular heat exchanger 7.
Example 3:
As shown in figure 3, the invention discloses a working medium recovery device of a direct air cooling unit, which comprises a bypass pipeline 1, a bypass valve 2 and a condensing device which are fixed on the bypass pipeline 1, a drain recovery device which is fixed on the condensing device, an air condenser, an air extraction pipeline 15, a water ring vacuum pump 16 and a condensed water tank 17, wherein the condensing device comprises a steam inlet pipe 3, a steam inlet valve 4, a steam outlet pipe 5, a steam outlet valve 6, a heat exchanger, a cooling water outlet pipe 12 and a cooling water inlet pipe 13, the steam inlet pipe 3, the heat exchanger and the steam outlet pipe 5 are sequentially connected and conducted, the inlet end of the steam inlet pipe 3 is connected and conducted with the bypass pipeline 1 at one end of the bypass valve 2, the outlet end of the steam outlet pipe 5 is connected and conducted with the bypass pipeline 1 at the other end of the bypass valve 2, the steam inlet valve 4 is fixed on the steam inlet pipe 3, the steam outlet valve 6 is fixed on the steam outlet pipe 5, The heat exchanger and the cooling water outlet pipe 12 are sequentially connected and communicated; the drainage recovery device comprises a water treatment device 8, a stop valve 9, a water seal pipe and a drainage pipe 11 which are sequentially connected and communicated, wherein the water treatment device 8 is fixed at the bottom of the heat exchanger and is connected and communicated with the steam side of the heat exchanger.
The mixed flow area 14 of the air condenser, the air pumping pipeline 15, the bypass pipeline 1 and the water ring vacuum pump 16 are connected and communicated in sequence.
The condensed water tank 17 is connected and communicated with the water seal pipe through the drain pipe 11.
The water treatment device is fixedly connected to the bottom of the heat exchanger.
The water seal pipe is a U-shaped water seal pipe 10.
The heat exchanger is a tubular heat exchanger 7.
Example 4:
a working medium recovery method of a direct air cooling unit is characterized in that the device in embodiment 1 is used, a bypass valve 2 is closed, an air inlet valve 4, an air outlet valve 6 and a stop valve 9 are opened, mixed gas enters a heat exchanger and is cooled and condensed to form condensed water, and the condensed water enters a drain recovery device.
Example 5:
example 5 differs from example 4 in that the apparatus of example 2 was used.
A method for recycling working medium of a direct air cooling unit comprises the steps of closing a bypass valve 2, opening an air inlet valve 4, an air outlet valve 6 and a stop valve 9, enabling mixed gas to enter a heat exchanger, cooling and condensing to form condensed water, and enabling the condensed water to enter a drain recycling device by using the device in embodiment 2. Uncondensed gases enter the water ring vacuum pump assembly 16 via the gas outlet line 5 and are exhausted.
Example 6:
example 6 differs from example 4 in that the apparatus of example 3 was used.
A method for recycling working medium of a direct air cooling unit comprises the steps of closing a bypass valve 2, opening an air inlet valve 4, an air outlet valve 6 and a stop valve 9, enabling mixed air to enter a heat exchanger, cooling and condensing to form condensed water, and enabling the condensed water to flow into a condensed water tank 17 through a water treatment device 8, the stop valve 9, a water seal pipe and a drain pipe 11 in sequence. Uncondensed gases enter the water ring vacuum pump assembly 16 via the gas outlet line 5 and are exhausted.
The invention concept of the application is as follows:
and the steam-gas mixture flowing out of the ACC mixed flow area of the air-cooled condenser is subjected to steam-gas separation, wet steam is condensed and recovered, the air temperature is reduced, and adverse effects of the high-temperature mixture on the operation of the water ring vacuum pump are avoided.
The system is suitable for recycling condensed water of the direct air cooling unit of the power plant, and the technical problem to be solved is to provide the system for recycling the power generation working medium of the direct air cooling unit, which has the advantages of simple installation, convenient operation and control, effective improvement of the operation condition of the water ring vacuum pump and saving of the power generation cost of the air cooling unit.
Technical contribution of the present application:
the technical problem that this application will be solved provides a simple installation, controls convenient, can effectively improve water ring vacuum pump operating mode, practice thrift the direct air cooling unit working medium recovery system of air cooling unit cooling cost.
The device comprises a condensing device, a water treatment device connected with the condensing device, a drainage recovery device connected with the water treatment device and a bypass pipeline connected with the condensing device in parallel. The condensing device comprises a tubular heat exchanger 7, a steam inlet pipe 3 and a steam outlet pipe 5 which are respectively connected with two ends of the tubular heat exchanger, wherein the steam inlet pipe is provided with a steam inlet valve 4, the steam outlet pipe is provided with a steam outlet valve 6, and the condensing device also comprises a cooling water inlet pipe 13 and a cooling water outlet pipe 12 which are respectively connected with two ends of the tubular heat exchanger; the steam inlet pipe and the steam outlet pipe are respectively connected with two ends of the bypass pipeline 1; a bypass valve 2 is arranged on the bypass pipeline; the water treatment device is fixedly connected to the bottom of the tubular heat exchanger 7 and communicated with the steam side of the tubular heat exchanger to remove colloid impurities and the like in the hydrophobic water on the steam side of the tubular heat exchanger; the drainage recovery device comprises a water treatment device 8, a stop valve 9 connected with the water treatment device, a U-shaped water seal pipe 10 connected with the stop valve, and a drainage pipe 11, namely a condensation water pipe, connected with the tail end of the U-shaped water seal pipe.
The beneficial effects are as follows:
1. set up the heat exchanger between air cooling condenser ACC mixed flow district and water ring vacuum pump, can effectively to the evacuation pipeline in, from the steam that the mixed flow district flows out condense, form liquid water and retrieve via hydrophobic recovery system after the steam condensation of high humidity, effectively realize condensing and retrieving of direct air cooling unit steam, practice thrift the working medium.
2. The water ring vacuum pump can exert the characteristics of sufficient and stable output only when the temperature of the working fluid is lower, the temperature of steam flowing out of the mixed flow area is higher and even can reach more than 60 ℃ in summer, the work of the water ring vacuum pump is seriously influenced, the humidity and the temperature of a steam-gas mixture cooled by the heat exchanger are obviously reduced, the working condition of the water ring vacuum pump is basically achieved, and the conditions of low efficiency and unstable working condition of the water ring vacuum pump are avoided.
3. The bypass valve is arranged, so that the condensing device can be closed under the condition that the humidity of the steam-gas mixture is not high, the mixed gas is directly vacuumized, and meanwhile, the condensing device and the water treatment device can be guaranteed to be overhauled and maintained under the condition that normal work is not influenced.
4. Because the condensation water tank and the tubular heat exchanger have pressure difference, the U-shaped water seal pipe can balance the pressure difference between the condensation water tank and the tubular heat exchanger, so that the drainage, namely the condensation water, smoothly flows to the condensation water tank; the stop valve in front of the U-shaped water seal pipe is used for separating the tubular heat exchanger, so that the maintenance work is facilitated.
Description of the technical solution:
as shown in fig. 1, the working medium recovery device of the direct air cooling unit comprises a condensing device, a drain recovery device connected with the condensing device and a bypass pipeline 1 connected with the condensing device in parallel, the specification of the bypass pipeline is the same as that of a main air extraction pipeline, the condensing device comprises a tubular heat exchanger 7 and an air inlet pipe 3 and an air outlet pipe 5 which are respectively connected with two ends of the tubular heat exchanger, an air inlet valve 4 is arranged in the air inlet pipe, and an air outlet valve 6 is arranged in the air outlet pipe; the steam inlet pipe and the steam outlet pipe are respectively connected with two ends of the bypass pipeline; the bypass pipeline is provided with a bypass valve 2; the drainage recovery device comprises a water treatment device 8 and a stop valve 9 which are connected with the condensing device, a U-shaped water seal pipe 10 which is fixedly connected with the stop valve 9, and a drainage pipeline 11 which is connected with the tail end of the U-shaped water seal pipe; the tubular heat exchanger 7 adopts a tubular horizontal heater with the model of JQ-130, and the flow area of the steam side is ensured to be the same as that of the main steam extraction pipeline.
As shown in fig. 2, the working medium recovery device of the direct air cooling unit is connected between the mixed flow area 14 of the air cooling condenser and the water ring vacuum pump unit 16 for use; part of the pipelines of the air extraction pipeline 15 are used as the bypass pipeline 1, and the steam inlet pipe 3 and the steam outlet pipe 5 are directly connected to the two ends of the bypass pipeline 1, so that the invention has the advantages of simple installation and convenient implementation.
The working process is as follows: when the humidity and the temperature of the mixed gas from the mixed flow area 14 of the air condensing steam device are higher, the bypass valve 2 is closed, the steam inlet valve 4, the steam outlet valve 6 and the stop valve 9 are opened, the mixed gas enters the tubular heat exchanger 7, and because the cooling water pipe is arranged in the tubular heat exchanger, the cooling water flows through the cooling pipe, namely, the mixed gas outside the cooling pipe is cooled and condensed, and condensed water, namely, drain water is formed; the uncondensed gas enters the water ring vacuum pump set 16 through the steam outlet pipe 5 and is discharged; the condensed water enters a drain recovery device after being drained, namely enters a U-shaped water seal pipe 10 from a water treatment device 8 through a stop valve 9 and flows back to a condensed water tank 17 through a drain pipe 11, so that the aim of recovering the working medium, namely the condensed water is fulfilled.
The water ring vacuum pump set 16 can exert the characteristics of sufficient and stable output only when the temperature of the working fluid is lower, and the non-condensable gas flowing out through the tubular heat exchanger 7 can effectively reduce the humidity and the temperature through cooling, so that the working condition of the water ring vacuum pump set 16 is basically achieved.
When the mixed gas temperature in the air pumping pipeline 15 can not produce adverse effect or need overhaul the heat exchanger and disappear to the work of water ring vacuum pump package 16, open bypass valve 2, close admission valve 4, steam outlet valve 6, and stop valve 9, the mixed gas is from the air pumping pipeline 15 direct flow through bypass pipeline 1, rethread water ring vacuum pump package 16 separation discharge, can overhaul work to condensing equipment promptly tubular heat exchanger and water treatment facilities under the prerequisite that does not influence unit safety, steady operation this moment.
The technical scheme keeps secret and operates for a period of time, and the field worker feeds back the advantages that:
the condensation device comprises a tubular heat exchanger, a steam inlet pipe and a steam outlet pipe, wherein the steam inlet pipe and the steam outlet pipe are respectively connected with the inlet and the outlet of the tubular heat exchanger; a bypass valve is arranged on the bypass pipeline; the drainage recovery device comprises a water treatment device, a stop valve, a U-shaped water seal pipe and a drainage pipe, wherein the water treatment device is fixedly connected to the bottom of the tubular heat exchanger and communicated with the inner cavity of the tubular heat exchanger, and the stop valve is arranged at the outlet of the water treatment device. The installation is simple, control convenient, can effectively improve water ring vacuum pump operating mode and can practice thrift air cooling unit cooling cost.
Claims (10)
1. The utility model provides a direct air cooling unit working medium recovery unit which characterized in that: including bypass pipeline (1), bypass valve (2) and condensing equipment of setting on bypass pipeline (1) and the hydrophobic recovery unit of setting on condensing equipment, condensing equipment includes admission pipe (3), admission valve (4), play steam pipe (5), play steam valve (6), heat exchanger, cooling water outlet pipe (12) and cooling water inlet tube (13), admission pipe (3), heat exchanger and play steam pipe (5) connect gradually and switch on, and the entry end of admission pipe (3) is connected with bypass pipeline (1) of bypass valve (2) one end and is switched on, the exit end of going out steam pipe (5) is connected with bypass pipeline (1) of the bypass valve (2) other end and is switched on, admission valve (4) set up on admission pipe (3), it sets up on play steam valve (6) play steam pipe (5), cooling water inlet tube (13), The heat exchanger and the cooling water outlet pipe (12) are sequentially connected and communicated; the drainage recovery device comprises a water treatment device (8), a stop valve (9), a water seal pipe and a drainage pipe (11) which are sequentially connected and conducted, wherein the water treatment device (8) is arranged at the bottom of the heat exchanger and is connected and conducted with the steam side of the heat exchanger.
2. The working medium recovery device of the direct air cooling unit according to claim 1, characterized in that: the air-cooled water-cooled generator further comprises an air condenser, an air extraction pipeline (15) and a water ring vacuum pump (16), wherein the mixed flow area (14) of the air condenser, the air extraction pipeline (15), the bypass pipeline (1) and the water ring vacuum pump (16) of the air condenser are sequentially connected and communicated.
3. The working medium recovery device of the direct air cooling unit according to claim 1, characterized in that: the water treatment device is fixedly connected to the bottom of the heat exchanger.
4. The working medium recovery device of the direct air cooling unit according to claim 1, characterized in that: the water seal pipe is a U-shaped water seal pipe (10).
5. The working medium recovery device of the direct air cooling unit according to claim 1, characterized in that: the heat exchanger is a tubular heat exchanger (7).
6. A method for recycling working medium of a direct air cooling unit is characterized by comprising the following steps: the use of the device of claim 1, the bypass valve (2) is closed, the steam inlet valve (4), the steam outlet valve (6) and the stop valve (9) are opened, the mixed gas enters the heat exchanger and is cooled and condensed to form condensed water, and the condensed water enters the drain recovery device.
7. The method for recycling the working medium of the direct air cooling unit according to claim 6, is characterized in that: the device also comprises a condensed water tank (17) which is connected and communicated with the drainage recovery device, and the condensed water flows into the condensed water tank (17) through the water treatment device (8), the stop valve (9), the water seal pipe and the drainage pipe (11) in sequence.
8. The method for recycling the working medium of the direct air cooling unit according to claim 6, is characterized in that: the air-cooled water circulation system is characterized by further comprising an air condenser, an air extraction pipeline (15) and a water ring vacuum pump (16), wherein a mixed flow area (14) of the air condenser, the air extraction pipeline (15), a bypass pipeline (1) and the water ring vacuum pump (16) of the air condenser are sequentially connected and communicated; the uncondensed gas enters the water ring vacuum pump set (16) through the steam outlet pipe (5) and is discharged.
9. The method for recycling the working medium of the direct air cooling unit according to claim 6, is characterized in that: the water treatment device is fixedly connected to the bottom of the heat exchanger.
10. The method for recycling the working medium of the direct air cooling unit according to claim 6, is characterized in that: the water seal pipe is a U-shaped water seal pipe (10), and the heat exchanger is a tubular heat exchanger (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911125772.7A CN110986616A (en) | 2019-11-18 | 2019-11-18 | Direct air cooling unit working medium recovery device and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911125772.7A CN110986616A (en) | 2019-11-18 | 2019-11-18 | Direct air cooling unit working medium recovery device and method |
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|---|---|---|---|---|
| JPS54141903A (en) * | 1978-04-25 | 1979-11-05 | Toshiba Corp | Condensing equipment |
| JPH06257962A (en) * | 1993-03-03 | 1994-09-16 | Toshiba Corp | Heater drain discharging device |
| CN204043432U (en) * | 2014-05-20 | 2014-12-24 | 国家电网公司 | A kind of Condensate of Direct Air-cooling Unit recovery system |
| CN108910985A (en) * | 2018-08-10 | 2018-11-30 | 中化蓝天霍尼韦尔新材料有限公司 | A kind of lime set processing system and processing method |
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2019
- 2019-11-18 CN CN201911125772.7A patent/CN110986616A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54141903A (en) * | 1978-04-25 | 1979-11-05 | Toshiba Corp | Condensing equipment |
| JPH06257962A (en) * | 1993-03-03 | 1994-09-16 | Toshiba Corp | Heater drain discharging device |
| CN204043432U (en) * | 2014-05-20 | 2014-12-24 | 国家电网公司 | A kind of Condensate of Direct Air-cooling Unit recovery system |
| CN108910985A (en) * | 2018-08-10 | 2018-11-30 | 中化蓝天霍尼韦尔新材料有限公司 | A kind of lime set processing system and processing method |
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Application publication date: 20200410 |