CN214745666U - Low-load stable operation and drainage recovery system of low-pressure drainage pump - Google Patents
Low-load stable operation and drainage recovery system of low-pressure drainage pump Download PDFInfo
- Publication number
- CN214745666U CN214745666U CN202022572015.9U CN202022572015U CN214745666U CN 214745666 U CN214745666 U CN 214745666U CN 202022572015 U CN202022572015 U CN 202022572015U CN 214745666 U CN214745666 U CN 214745666U
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- Prior art keywords
- low
- water
- drainage
- cooling
- mixed
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- 238000011084 recovery Methods 0.000 title claims abstract description 27
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 96
- 239000000498 cooling water Substances 0.000 claims abstract description 67
- 230000001105 regulatory effect Effects 0.000 claims abstract description 10
- 239000007788 liquid Substances 0.000 claims abstract description 5
- 238000001816 cooling Methods 0.000 claims description 72
- 230000002209 hydrophobic effect Effects 0.000 claims description 16
- 239000000463 material Substances 0.000 claims description 5
- 239000000126 substance Substances 0.000 claims description 3
- 230000000694 effects Effects 0.000 description 7
- 239000002918 waste heat Substances 0.000 description 4
- 230000001276 controlling effect Effects 0.000 description 3
- 238000004134 energy conservation Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- AMXOYNBUYSYVKV-UHFFFAOYSA-M lithium bromide Chemical compound [Li+].[Br-] AMXOYNBUYSYVKV-UHFFFAOYSA-M 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000003657 drainage water Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
Images
Abstract
The utility model discloses a low load stable operation and drainage recovery system of a low pressure drainage pump, which comprises a first drainage system, a second drainage system, a cooling water pipe, a mixed cooling water tank and the low pressure drainage pump; wherein: a water outlet main pipe of the low-pressure water drainage pump is communicated with the first water drainage system and the second water drainage system, a first regulating valve is arranged on a pipeline for communicating the water outlet main pipe of the low-pressure water drainage pump with the first water drainage system, and a second regulating valve is arranged on a pipeline for communicating the water outlet main pipe of the low-pressure water drainage pump with the second water drainage system; a water inlet main pipe of the low-pressure drainage pump is communicated with the mixed cooling water tank; a low pressure water draining pipe of the second water draining system is communicated with the mixed cooling water tank; and the cooling water pipe is communicated with the mixed cooling water tank, and the cooling water pipe conveys cooling water into the mixed cooling water tank to mix and cool liquid in the mixed cooling water tank. The utility model discloses simple structure makes low drainage pump low-load operation stable that adds, guarantees that equipment operation is reliable, and energy-concerving and environment-protective.
Description
Technical Field
The utility model relates to a power generation equipment technical field especially relates to a low drainage pump low-load steady operation and hydrophobic recovery system that adds.
Background
At present, peak regulation of thermal power generating units is increasingly frequent, low-load time of the units is increased, and improvement of operation stability of equipment during low-load becomes a challenge for power plants. At present, a lot of drained water of a unit is not recycled, or high-temperature drained water is directly discharged to a drainage flash tank, so that energy waste is caused, and the energy-saving requirement is not met.
In Anhui regions, peak regulation of thermal power generating units is increasingly frequent, low-load time of the units is increased, and a challenge for a power plant is to ensure stable operation of equipment during low-load period. At present, the low-load operation of a low-pressure drainage pump of a #1 unit of the factory is unstable; the low-pressure-adding hydrophobic pump current is unstable, and the quality of a #6 low-water-adding level control product is poor; many hydrophobic of unit do not have recycle, or high temperature is hydrophobic directly to be arranged to the drainage flash vessel, causes the energy waste, does not accord with energy-conserving requirement.
When the unit runs at low load, the low-pressure-feed drainage quantity of No. 5 and No. 6 is greatly reduced, but the drainage temperature is basically unchanged, so that the flow of the low-pressure-feed drainage pump is insufficient, and the running of the low-pressure-feed drainage pump is unstable.
SUMMERY OF THE UTILITY MODEL
For solving the technical problem who exists among the background art, the utility model provides a low drainage pump low-load steady operation and hydrophobic recovery system that adds.
The utility model provides a low-load stable operation and drainage recovery system of a low-pressure drainage pump, which comprises a first drainage system, a second drainage system, a cooling water pipe, a mixed cooling water tank and the low-pressure drainage pump; wherein:
a water outlet main pipe of the low-pressure water drainage pump is communicated with the first water drainage system and the second water drainage system, a first regulating valve is arranged on a pipeline for communicating the water outlet main pipe of the low-pressure water drainage pump with the first water drainage system, and a second regulating valve is arranged on a pipeline for communicating the water outlet main pipe of the low-pressure water drainage pump with the second water drainage system;
a water inlet main pipe of the low-pressure drainage pump is communicated with the mixed cooling water tank;
a low pressure water draining pipe of the second water draining system is communicated with the mixed cooling water tank;
and the cooling water pipe is communicated with the mixed cooling water tank, and the cooling water pipe conveys cooling water into the mixed cooling water tank to mix and cool liquid in the mixed cooling water tank.
As the utility model discloses the scheme of further optimization, it is equipped with the third valve on the female pipe of income of drain pump to hang down, is equipped with the fourth valve on the female pipe of play of drain pump.
As a further optimized proposal of the utility model, a fifth adjusting valve is arranged on the cooling water pipe.
As the utility model discloses the scheme of further optimization still wraps the recovery pipeline, recovery pipeline and mixed cooling water tank intercommunication.
As a further optimized scheme of the utility model, the mixed cooling water tank includes the box and mixes the water supply spare, wherein:
the box body is provided with a water storage cavity, the mixed water supply part is arranged on the box body,
have mixed runner on the mixed water supply spare, outer cooling chamber and inlayer cooling chamber, mixed runner is located between outer side layer cooling chamber and the inlayer cooling chamber, the low drain pipe that adds of second drainage system and mixed runner intercommunication, cooling water piping and outer cooling chamber intercommunication have connect the through-hole between outer cooling chamber and the mixed runner, connect the through-hole with outer cooling chamber and mixed runner intercommunication, mixed runner's below and water storage chamber intercommunication, inlayer cooling intracavity is equipped with the cooling material.
As a further preferred embodiment of the present invention, the cooling material is ice.
As the utility model discloses further optimized scheme has cooling channel between inlayer cooling chamber and the mixed runner, and cooling channel is used for the inlayer cooling chamber and mixed runner intercommunication.
As a further preferred aspect of the present invention, the cooling channel is inclined downward gradually from the end away from the mixing channel to the direction close to the mixing channel.
As a further preferred aspect of the present invention, the connection through holes are gradually inclined downward from the end away from the mixing flow channel to the direction close to the mixing flow channel.
As a further preferred aspect of the present invention, the mixing channel is helical along the vertical direction.
In the utility model, the low load stable operation and drainage recovery system of the low pressure heater drainage pump can ensure the low operation stability and drainage recovery of the low pressure heater drainage pump at any load stage of the unit by adjusting the undisturbed on-line switching capacity of the first adjusting valve and the second adjusting valve;
in order to achieve the purpose of energy conservation, high-temperature drainage is discharged to a mixed cooling water tank, so that the purposes of reducing waste heat discharge and recovering drainage waste heat are achieved;
the low-pressure water-adding drainage pump can be selected to the main pipeline of the low water-adding side inlet of the first drainage system or the main pipeline of the low water-adding side inlet of the first drainage system according to the temperature, so that the energy-saving effect is achieved;
and a mixed cooling water tank is arranged near the low-pressure water-adding drainage pump, and plays a role in collecting drainage water and cooling the inlet of the low-pressure water-adding drainage pump for drainage.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the structure of the mixed cooling water tank of the present invention;
fig. 3 is a cross-sectional view of the mixed cooling water tank of the present invention.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar designations denote like or similar elements or elements having like or similar functionality throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
It will be understood that the terms "central," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in an orientation or positional relationship indicated in the drawings for convenience and simplicity of description only, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be considered as limiting the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
The low-load stable operation and drainage recovery system of the low-pressure drainage pump shown in fig. 1-3 comprises a first drainage system 1, a second drainage system 2, a cooling water pipe 3, a mixed cooling water tank 4 and a low-pressure drainage pump 5; wherein:
a water outlet main pipe 6 of the low-pressure water drainage pump 5 is communicated with the first water drainage system 1 and the second water drainage system 2, a first adjusting valve 7 is arranged on a pipeline for communicating the water outlet main pipe 6 of the low-pressure water drainage pump 5 with the first water drainage system 1, and a second adjusting valve 8 is arranged on a pipeline for communicating the water outlet main pipe 6 of the low-pressure water drainage pump 5 with the second water drainage system 2;
a water inlet main pipe 9 of the low pressure water drainage pump 5 is communicated with the mixed cooling water tank 4;
the low pressure water adding drainage pipe 10 of the second drainage system 2 is communicated with the mixed cooling water tank 4;
the cooling water pipe 3 is communicated with the mixed cooling water tank 4, and the cooling water pipe 3 conveys cooling water to the mixed cooling water tank 4 to mix and cool liquid in the mixed cooling water tank 4.
A third valve 11 is arranged on a water inlet main pipe 9 of the low-pressure water drainage pump 5, and a fourth valve 12 is arranged on a water outlet main pipe 6 of the low-pressure water drainage pump 5.
A fifth regulating valve 13 is arranged on the cooling water pipe 3.
A recovery pipeline 14 is also included, and the recovery pipeline 14 is communicated with the mixed cooling water tank 4.
The mixed cooling water tank 4 includes a tank body 40 and a mixed water feed member 41, in which:
the case 40 has a water storage chamber 400, a mixed water feeding member 41 is provided on the case 40,
mix and have mixed runner 410 on the water supply part 41, outer cooling chamber 411 and inlayer cooling chamber 412, mixed runner 410 is located between outer layer cooling chamber and inlayer cooling chamber 412, the low hydrophobic pipe 10 that adds of second drainage system 2 communicates with mixed runner 410, condenser tube 3 says and communicates with outer cooling chamber 411, there is connect the through-hole 15 between outer cooling chamber 411 and the mixed runner 410, connect the through-hole 15 with outer cooling chamber 411 and mixed runner 410 intercommunication, the below and the water storage chamber 400 intercommunication of mixed runner 410, be equipped with the cooling material in the inlayer cooling chamber 412.
The cooling substance is ice.
A cooling channel 16 is arranged between the inner layer cooling cavity 412 and the mixing flow channel 410, and the cooling channel 16 is used for communicating the inner layer cooling cavity 412 and the mixing flow channel 410.
The cooling channels 16 are gradually sloped downward from the end away from the mixing channel 410 toward the mixing channel 410.
The connecting through-hole 15 is gradually inclined downward from the end far from the mixing flow channel 410 toward the mixing flow channel 410.
The mixing channel 410 is spiral in the vertical direction.
In the working process of the embodiment:
in consideration of the problem that the temperature of the low water adding side inlet and outlet of the second drainage system 2 is matched with the temperature of the outlet of the low water adding drainage pump 5, the outlet of the low water adding drainage pump 5 is provided with a first regulating valve 7 and a second regulating valve 8 so as to achieve the purpose of energy conservation;
considering that the first drainage system 1 and the second drainage system 2 have small drainage quantity, instability and high drainage temperature under low load and low load, the mixed cooling water tank 4 is arranged and comprises an outlet pipeline connected with the low drainage pump 5, a plurality of inlet pipelines (the second drainage system 2 has low drainage, other systems have drainage, cooling water and the like) and a water level meter. The water level of the mixed cooling water tank is controlled by the motor frequency of the low pressure drainage pump 5;
because of the need of controlling the temperature of the inlet of the low pressure heater drainage pump 5, a cooling water pipeline of the mixed cooling water tank is arranged, the pipeline is provided with a flow regulating valve, and the purpose of controlling the temperature of the inlet of the low pressure heater drainage pump is achieved by controlling the flow of cooling water;
in order to achieve the purpose of energy conservation, the high-temperature drainage of the second drainage system 2 is discharged to the mixed cooling water tank 4, so that the purposes of reducing waste heat emission and recovering drainage waste heat are achieved;
in the process of cooling the mixed liquid in the mixed water tank 4, firstly, a large number of ice cubes are placed in the inner-layer cooling cavity 412, then, the outer-layer cooling cavity 411 is filled with cooling water, hot hydrophobic water is filled in the mixed flow channel 410, water with high temperature flows along the mixed flow channel 410 from top to bottom through the spiral mixed flow channel 410, in the process, the cooling water in the outer-layer cooling cavity 411 and the cold water in the inner-layer cooling cavity 412 due to the melting of the ice flow into the mixed flow channel 410 under the action of self gravity, the heat exchange is realized to cool the high-temperature hydrophobic water, and the mixed cooling effect is obvious.
In order to facilitate the control of the opening and closing of the low pressure and water drain pump 5, in this embodiment, it is preferable that the water inlet main pipe 9 of the low pressure and water drain pump 5 is provided with a third valve 11, and the water outlet main pipe 6 of the low pressure and water drain pump 5 is provided with a fourth valve 12.
In order to control the flow rate of water in the cooling water pipe 3, it is preferable in this embodiment that the cooling water pipe 3 is provided with a fifth regulating valve 13.
In order to further achieve the purpose of energy saving, in this embodiment, it is preferable that a recovery pipeline 14 is further included, and the recovery pipeline 14 is communicated with the mixed cooling water tank 4 and is used for recovering the drainage of the lithium bromide refrigeration unit, so as to achieve the purpose of energy saving.
In order to further increase the technical effect of the mixed cooling, it is preferable in the present embodiment that the mixed cooling water tank 4 includes a tank 40 and a mixed water feeding member 41, wherein:
the case 40 has a water storage chamber 400, a mixed water feeding member 41 is provided on the case 40,
mix and have mixed runner 410 on the water supply part 41, outer cooling chamber 411 and inlayer cooling chamber 412, mixed runner 410 is located between outer layer cooling chamber and inlayer cooling chamber 412, the low hydrophobic pipe 10 that adds of second drainage system 2 communicates with mixed runner 410, condenser tube 3 says and communicates with outer cooling chamber 411, there is connect the through-hole 15 between outer cooling chamber 411 and the mixed runner 410, connect the through-hole 15 with outer cooling chamber 411 and mixed runner 410 intercommunication, the below and the water storage chamber 400 intercommunication of mixed runner 410, be equipped with the cooling material in the inlayer cooling chamber 412.
In order to further increase the cooling effect, it is preferred in this embodiment that the cooling substance is ice.
In the present embodiment, it is preferable that a cooling passage 16 is provided between the inner layer cooling chamber 412 and the mixing flow passage 410, and the cooling passage 16 is used to communicate the inner layer cooling chamber 412 and the mixing flow passage 410.
To further increase the cooling effect, it is preferable in the present embodiment that the cooling channel 16 is gradually inclined downward from the end away from the mixing channel 410 toward the mixing channel 410.
In order to further increase the cooling effect, it is preferable in the present embodiment that the connection through-hole 15 is gradually inclined downward from the end far from the mixing flow channel 410 toward the direction close to the mixing flow channel 410.
In order to further increase the cooling effect, it is preferable in the present embodiment that the mixing channel 410 is spiral in the vertical direction.
The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.
Claims (10)
1. A low-load stable operation and drainage recovery system of a low-pressure drainage pump is characterized by comprising a first drainage system (1), a second drainage system (2), a cooling water pipe (3), a mixed cooling water tank (4) and a low-pressure drainage pump (5); wherein:
a water outlet main pipe (6) of the low-pressure water drainage pump (5) is communicated with the first water drainage system (1) and the second water drainage system (2), a first adjusting valve (7) is arranged on a pipeline for communicating the water outlet main pipe (6) of the low-pressure water drainage pump (5) with the first water drainage system (1), and a second adjusting valve (8) is arranged on a pipeline for communicating the water outlet main pipe (6) of the low-pressure water drainage pump (5) with the second water drainage system (2);
a water inlet main pipe (9) of the low-pressure drainage pump (5) is communicated with the mixed cooling water tank (4);
a low pressure water drainage pipe (10) of the second water drainage system (2) is communicated with the mixed cooling water tank (4);
the cooling water pipe (3) is communicated with the mixed cooling water tank (4), and the cooling water pipe (3) conveys cooling water to the mixed cooling water tank (4) to mix and cool liquid in the mixed cooling water tank (4).
2. The low load stable operation and drainage recovery system of the low pressure heater drainage pump according to claim 1, wherein a third valve (11) is disposed on the water inlet main pipe (9) of the low pressure heater drainage pump (5), and a fourth valve (12) is disposed on the water outlet main pipe (6) of the low pressure heater drainage pump (5).
3. The low load stable operation and drain recovery system of the low plus drain pump according to claim 1, wherein a fifth regulating valve (13) is provided on the cooling water pipe (3).
4. The low-pressure and low-drainage pump low-load stable operation and drainage recovery system according to claim 1, further comprising a recovery pipeline (14), wherein the recovery pipeline (14) is communicated with the mixed cooling water tank (4).
5. The low load stable operation and drain recovery system of a low plus drain pump according to claim 1, wherein the mixed cooling water tank (4) comprises a tank body (40) and a mixed water feeding member (41), wherein:
the box body (40) is provided with a water storage cavity (400), the mixed water supply part (41) is arranged on the box body (40),
have mixed runner (410) on mixing water supply spare (41), outer cooling chamber (411) and inlayer cooling chamber (412), mixed runner (410) is located between outer side layer cooling chamber and inlayer cooling chamber (412), low drainage pipe (10) and mixed runner (410) intercommunication of second hydrophobic system (2), condenser tube (3) way and outer cooling chamber (411) intercommunication, there is connect the through-hole (15) between outer cooling chamber (411) and mixed runner (410), connect the through-hole (15) with outer cooling chamber (411) and mixed runner (410) intercommunication, the below and the water storage chamber (400) intercommunication of mixed runner (410), be equipped with the cooling material in inlayer cooling chamber (412).
6. The low plus hydrophobic pump low load stable operation and hydrophobic recovery system of claim 5, wherein the cooling substance is ice.
7. The low load stable operation and drainage recovery system of the low plus drainage pump according to claim 6, wherein a cooling channel (16) is formed between the inner cooling cavity (412) and the mixing channel (410), and the cooling channel (16) is used for communicating the inner cooling cavity (412) with the mixing channel (410).
8. The low plus hydrophobic pump low load stable operation and hydrophobic recovery system as claimed in claim 7, wherein the cooling channel (16) is gradually inclined downward from an end far from the mixing channel (410) to a direction close to the mixing channel (410).
9. The low load stable operation and drainage recovery system of a low plus drainage pump according to claim 5, wherein the connecting through hole (15) is gradually inclined downward from an end far away from the mixing flow channel (410) to a direction close to the mixing flow channel (410).
10. The low plus hydrophobic pump low load stable operation and hydrophobic recovery system as claimed in claim 5, wherein the mixing channel (410) is spiral in vertical direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022572015.9U CN214745666U (en) | 2020-11-09 | 2020-11-09 | Low-load stable operation and drainage recovery system of low-pressure drainage pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022572015.9U CN214745666U (en) | 2020-11-09 | 2020-11-09 | Low-load stable operation and drainage recovery system of low-pressure drainage pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214745666U true CN214745666U (en) | 2021-11-16 |
Family
ID=78575007
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022572015.9U Withdrawn - After Issue CN214745666U (en) | 2020-11-09 | 2020-11-09 | Low-load stable operation and drainage recovery system of low-pressure drainage pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214745666U (en) |
-
2020
- 2020-11-09 CN CN202022572015.9U patent/CN214745666U/en not_active Withdrawn - After Issue
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| AV01 | Patent right actively abandoned |
Granted publication date: 20211116 Effective date of abandoning: 20240110 |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20211116 Effective date of abandoning: 20240110 |
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