CN217655467U

CN217655467U - Closed-cooling water energy-saving operation system of power plant

Info

Publication number: CN217655467U
Application number: CN202220685675.4U
Authority: CN
Inventors: 蔡明�; 陈宇; 薛沈江; 冯栋梁; 陆永健; 邱以成; 姚章钦; 黄雨秋; 李海峰; 田晟
Original assignee: Huaneng International Power Jiangsu Energy Development Co Ltd; Nantong Power Plant of Huaneng International Power Jiangsu Energy Development Co Ltd
Current assignee: Huaneng International Power Jiangsu Energy Development Co Ltd; Nantong Power Plant of Huaneng International Power Jiangsu Energy Development Co Ltd
Priority date: 2022-03-25
Filing date: 2022-03-25
Publication date: 2022-10-25
Anticipated expiration: 2032-03-25

Abstract

The utility model discloses a power plant closes cold water energy-conserving operating system, including addding the cold pump of closing, the input of addding the cold pump of closing is connected with the inlet tube, and the other end and the unit of inlet tube close the female pipe of cold return water and are linked together, and the output of addding the cold pump of closing is connected with the outlet pipe, and the other end of outlet pipe is linked together with closing the female pipe of cold water outlet, and the inside of inlet tube has set gradually entry butterfly valve and filter tube to the direction of addding the cold pump of closing by closing the female pipe of cold return water. The utility model, without changing the operation mode of the original one-by-one cold-closing pump, the added cold-closing pump can meet the increased cold-closing water flow demand when the single machine is in high load, thereby improving the operation reliability; when the unit is stopped, the original cold-blocking pump can be replaced by the additionally arranged cold-blocking pump to supply cold-blocking water, so that the power consumption is reduced, and the economic benefit is improved; when the flow of the single machine high-load closed cold water is insufficient, the closed cold pump can be started to supplement the flow of the closed cold water, the flexibility is strong, and the economic benefit is high.

Description

Closed-cooling water energy-saving operation system of power plant

Technical Field

The utility model relates to a power plant's cooling water system technical field especially relates to a power plant closes energy-conserving operating system of cold water.

Background

In the daily operation of a power plant, a plurality of important instruments including a gas compressor, an instrument gas compressor and the like need to be circularly supplied with cooling water, and the cooling water of most instruments of the power plant is provided by closed cooling water at present.

At present, most of the cold shut pumps of power plants are used and spare, under the condition of high-load operation of the unit, one set of cold shut pumps cannot meet the requirements, the flow of cold shut water is excessive when all the cold shut pumps are opened, waste is caused, a spare cold shut pump is not provided in the full-open state of the cold shut pumps, once a fault occurs, the quantity of cold shut water cannot be ensured, the operation safety of the unit is influenced, impurities exist in the cold shut water in the circulating process, the normal operation of the unit can be influenced, and therefore, the cold shut water is necessary to be filtered.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the defects existing in the prior art and providing a closed cold water energy-saving operation system of a power plant.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a power plant closes cold water energy-conserving operating system, is including addding and closes the cold pump, the input of addding closing the cold pump is connected with the inlet tube, the other end and the unit of inlet tube close the female pipe of cold water return and are linked together, the output of addding closing the cold pump is connected with the outlet pipe, the other end of outlet pipe with close the female pipe of cold water outlet and be linked together, the inside of inlet tube is by closing the female pipe of cold water return extremely the direction of addding closing the cold pump has set gradually entry butterfly valve and filter tube, the inside of outlet pipe by addding and close the cold pump to close the female pipe direction of cold water outlet and set gradually export check valve and export butterfly valve.

Preferably, the inside wall of filter tube rotates and is connected with waterproof bearing, waterproof bearing inlay in the inside wall of filter tube, just waterproof bearing's one end extends to the part of filter tube inner chamber is fixed mounting still has the multiunit cleaning roller, waterproof bearing's inside wall fixed mounting has the driving impeller group, the other end fixed mounting who drives impeller group has drive connecting rod, the inside wall of filter tube is fixed mounting still has filter screen board.

Preferably, the diameter of the filter screen plate is smaller than the inner diameter of the filter pipe, and a filter screen collecting bag is fixedly arranged between the filter screen plate and the inner side wall of the filter pipe.

Preferably, the axis of the transmission connecting rod coincides with the axis of the filter pipe, and a plurality of groups of cleaning scrapers are fixedly mounted at the top end of the transmission connecting rod.

Preferably, the cleaning roller is of a spiral design, and the cleaning roller is attached to the inner side wall of the filter pipe.

Preferably, the clearance scraper blade is the arc design, the cross-section of clearance scraper blade is the spill design, the clearance scraper blade with the surface of filter screen board is laminated mutually, just the clearance scraper blade extends to the outside of filter screen board and not with the inside wall of filter tube contacts.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the additionally arranged cold shut pump meets the increased cold shut water flow requirement when a single machine is in high load without changing the running mode that the original cold shut pump is used for one use after another, so that the running reliability is improved; when the unit is stopped, the original cold-blocking pump can be replaced by the additionally arranged cold-blocking pump to supply cold-blocking water, so that the power consumption is reduced, and the economic benefit is improved; when the flow of the single machine high-load closed cold water is insufficient, the closed cold pump can be started to supplement the flow of the closed cold water, the flexibility is strong, and the economic benefit is high.

2. Not only can in time clear up the inside wall of filter tube and prevent that impurity from adhering to and arousing the pipeline corrosion, the impurity that can clear up simultaneously gets off realizes concentrating the clearance and prevents further pollution to can realize the automatic clearance to filter screen plate, guarantee the filter effect of filter tube, and then guarantee to add the steady operation who closes the cold pump, reduce later stage operation and maintenance cost, ensure the stability and the economic nature of unit operation.

Drawings

Fig. 1 is a schematic view of the overall structure of a cold water-blocking energy-saving operation system of a power plant according to the present invention;

fig. 2 is a schematic structural view of a filter pipe of a cold water shut-off energy-saving operation system of a power plant provided by the utility model;

fig. 3 is the utility model provides a cleaning scraper blade structure schematic diagram of the cold water energy-saving operation system is closed to power plant.

In the figure: 1. a closed cooling pump is additionally arranged; 2. a water inlet pipe; 3. an inlet butterfly valve; 4. a filter tube; 5. a water outlet pipe; 6. an outlet check valve; 7. an outlet butterfly valve; 8. a waterproof bearing; 9. driving the impeller assembly; 10. a transmission connecting rod; 11. a cleaning roller; 12. a filter screen plate; 13. cleaning a scraper; 14. and (5) a filter screen collection bag.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

Referring to fig. 1-3, the power plant cold water closing energy-saving operation system comprises an additional cold closing pump 1, wherein an input end of the additional cold closing pump 1 is connected with a water inlet pipe 2, the other end of the water inlet pipe 2 is communicated with a unit cold water closing return main pipe, an output end of the additional cold closing pump 1 is connected with a water outlet pipe 5, the other end of the water outlet pipe 5 is communicated with a cold water closing outlet main pipe, an inlet butterfly valve 3 and a filter pipe 4 are sequentially arranged in the water inlet pipe 2 from the cold water closing return main pipe to the direction of the additional cold closing pump 1, and an outlet check valve 6 and an outlet butterfly valve 7 are sequentially arranged in the water outlet pipe 5 from the cold closing pump 1 to the cold water closing outlet main pipe;

specifically, the parameters of the additional cold-closing pump 1 are smaller than those of the long-term operation cold-closing pump of the power plant, and the additional cold-closing pump 1 is independently controlled.

As shown in fig. 2, the inner side wall of the filter tube 4 is rotatably connected with a waterproof bearing 8, the waterproof bearing 8 is embedded in the inner side wall of the filter tube 4, a plurality of groups of cleaning rollers 11 are fixedly mounted on a portion of one end of the waterproof bearing 8 extending into the inner cavity of the filter tube 4, a driving impeller set 9 is fixedly mounted on the inner side wall of the waterproof bearing 8, a transmission link 10 is fixedly mounted at the other end of the driving impeller set 9, and a filter screen plate 12 is fixedly mounted on the inner side wall of the filter tube 4.

As shown in FIG. 2, the diameter of the screen plate 12 is smaller than the inner diameter of the filter tube 4, and a screen collecting bag 14 is fixedly installed between the screen plate 12 and the inner side wall of the filter tube 4.

As shown in FIG. 2, the axis of the transmission connecting rod 10 coincides with the axis of the filtering pipe 4, and a plurality of groups of cleaning scrapers 13 are fixedly installed at the top end of the transmission connecting rod 10.

As shown in fig. 2, the cleaning roller 11 is of a spiral design, and the cleaning roller 11 is attached to the inner side wall of the filter tube 4.

As shown in fig. 3, the cleaning scraper 13 is designed in an arc shape, the cross section of the cleaning scraper 13 is designed in a concave shape, the cleaning scraper 13 is attached to the surface of the screen plate 12, and the cleaning scraper 13 extends to the outer side of the screen plate 12 and is not in contact with the inner side wall of the filter tube 4.

In the utility model, the additional cold-closing pump 1 is powered on and opened when the unit is in high load, the water flow in the unit closed cold water return mother pipe is introduced by the additional cold-closing pump 1, and the water flow is discharged to the closed cold water outlet mother pipe through the water outlet pipe 5 after being treated by the additional cold-closing pump 1, so that the operation mode of one-by-one use of the original closed cold pump is not changed, the increased closed cold water flow demand when the unit is in high load is met by the additional cold-closing pump 1, and the operation reliability is improved;

when the unit is stopped, the original cold-blocking pump can be replaced by the additionally arranged cold-blocking pump 1 to supply cold-blocking water, so that the power consumption is reduced, and the economic benefit is improved;

when the flow of the single high-load closed cold water is insufficient, the additionally arranged closed cold pump 1 can be started to supplement the flow of the closed cold water, so that the flexibility is strong, and the economic benefit is high;

when the water flow in the closed cold water return mother pipe passes through the filter pipe 4, the water flow can drive the driving impeller set 9 and the waterproof bearing 8 to rotate when passing through the driving impeller set 9, and then drive the transmission connecting rod 10 to rotate, the cleaning roller 11 rotates to rotationally clean the inner side wall of the filter pipe 4, so that water scales and impurities can be cleaned, the impurities can be prevented from being corroded due to the attachment to the inner side wall of the filter pipe 4, a part of the cleaned impurities are filtered by the filter screen plate 12 and collected by the filter screen collecting bag 14, meanwhile, the rotation of the transmission connecting rod 10 drives the cleaning scraper 13 to rotate, the concave design of the cleaning scraper 13 can effectively clean suspended matters and impurities on the surface of the filter screen plate 12 during rotation, the impurities are concentrated to the concave part of the cleaning scraper 13, the impurities are driven to move towards the direction far away from the cleaning scraper 13 along with the rotation of the cleaning scraper 13 until the impurities are separated from the cleaning scraper 13, the impurities are just between the filter screen plate 12 and the filter screen collecting bag 14, the impurities flow along with the cleaning scraper 13, the operation of the impurities can be ensured, the filter screen collecting bag, the stability of the filter screen collecting bag and the filter screen collecting bag can be further reduced, and the pollution of the filter unit can be prevented, and the filter pipe can be prevented, and the stability of the filter unit can be further reduced, and the cleaning effect of the impurities can be realized, and the filter unit.

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

1. The utility model provides a power plant closes energy-conserving operating system of cold water, closes cold pump (1) including addding, its characterized in that, the input of addding to close cold pump (1) is connected with inlet tube (2), the other end and the female pipe of the cold water return of unit closing of inlet tube (2) are linked together, the output of addding to close cold pump (1) is connected with outlet pipe (5), the other end of outlet pipe (5) is linked together with closing cold water outlet pipe, the inside of inlet tube (2) is by closing the female pipe of cold water return extremely the direction of addding to close cold pump (1) has set gradually entry butterfly valve (3) and filter tube (4), the inside of outlet pipe (5) by addding to close cold pump (1) and to close the female pipe direction of cold water outlet pipe and set gradually export check valve (6) and export butterfly valve (7).

2. The power plant cold water-closing energy-saving operation system according to claim 1, wherein the inner side wall of the filter pipe (4) is rotatably connected with a waterproof bearing (8), the waterproof bearing (8) is inlaid in the inner side wall of the filter pipe (4), one end of the waterproof bearing (8) extends to the inner cavity of the filter pipe (4) and is further fixedly provided with a plurality of groups of cleaning rollers (11), the inner side wall of the waterproof bearing (8) is fixedly provided with a driving impeller set (9), the other end of the driving impeller set (9) is fixedly provided with a transmission connecting rod (10), and the inner side wall of the filter pipe (4) is further fixedly provided with a filter screen plate (12).

3. A cold water shut-off energy-saving operation system for a power plant according to claim 2, wherein the diameter of the filter screen plate (12) is smaller than the inner diameter of the filter pipe (4), and a filter screen collecting bag (14) is fixedly arranged between the filter screen plate (12) and the inner side wall of the filter pipe (4).

4. A power plant cold water-closing energy-saving operation system according to claim 2, characterized in that the axis of the transmission connecting rod (10) coincides with the axis of the filtering pipe (4), and a plurality of groups of cleaning scrapers (13) are fixedly mounted on the top end of the transmission connecting rod (10).

5. A cold water shutdown energy-saving operation system for power plant according to claim 2, characterized in that the cleaning roller (11) is of spiral design, and the cleaning roller (11) is attached to the inner side wall of the filtering pipe (4).

6. A cold water shut-off energy-saving operation system in a power plant according to claim 4, characterized in that the cleaning scraper (13) is arc-shaped, the cross section of the cleaning scraper (13) is concave, the cleaning scraper (13) is attached to the surface of the filter screen plate (12), and the cleaning scraper (13) extends to the outside of the filter screen plate (12) and is not in contact with the inner side wall of the filter pipe (4).