CN212752053U

CN212752053U - Water-cooling closed circulation water supply system for pump station

Info

Publication number: CN212752053U
Application number: CN202020484143.5U
Authority: CN
Inventors: 陈广明; 贺磊; 唐柱闩; 李文景
Original assignee: Anhui Provincial Group Ltd For Yangtze To Huaihe Water Diversion
Current assignee: Anhui Provincial Group Ltd For Yangtze To Huaihe Water Diversion
Priority date: 2020-04-01
Filing date: 2020-04-01
Publication date: 2021-03-19
Anticipated expiration: 2030-04-01

Abstract

The utility model belongs to the pump station field, concretely relates to pump station water-cooling seals circulation water supply system. The pump station comprises a motor layer, an intermediate layer and a water pump layer which are sequentially arranged from top to bottom, the top of the pump station is provided with a main motor, the main motor is provided with a rotating shaft penetrating through the motor layer, the intermediate layer and the water pump layer, the rotating shaft on the motor layer is provided with an upper guide bearing and a lower guide bearing, the motor layer further comprises an upper oil chamber coating the upper guide bearing and a lower oil chamber coating the lower guide bearing, the rotating shaft on the intermediate layer is provided with a packing box, the rotating shaft on the water pump layer is provided with a water guide bearing, and the water pump layer further comprises a water chamber coating the bottom bearing; the water supply system comprises a closed circulation heat dissipation unit for dissipating heat of an upper guide bearing (an upper oil chamber) and a lower guide bearing (a lower oil chamber) and an open water supply heat dissipation unit for dissipating heat of a stuffing box and a water guide bearing chamber. The beneficial effects of the utility model are that can solve the pipeline and block up and corrosion, improve cooling efficiency.

Description

Water-cooling closed circulation water supply system for pump station

Technical Field

The utility model belongs to the pump station field, concretely relates to pump station water-cooling seals circulation water supply system.

Background

The large-scale pump station is an important water conservancy infrastructure of the country, and the water supply system is an important component in the auxiliary system of the large-scale pump station, mainly provides cooling circulation lubricating water for a main motor, an upper guide bearing, a lower guide bearing and other equipment, and is one of important auxiliary systems for ensuring the normal and safe operation of a large-scale pump station unit.

At present, water supply systems in China can be divided into open type and closed type according to structural forms, and can be divided into water cooling type and air cooling type according to cooling media. The technical water supply system of the domestic large-scale pump station mainly adopts a water-cooling open type at present, cooling water enters a water pump layer through a forebay runner in a lateral direction, enters a technical water supply unit through an embedded pressure-bearing pipeline, is respectively pressurized to equipment cooling pipelines such as a guide bearing and a cooling oil chamber, is circularly cooled by a heat exchanger and then is discharged to a pump station forebay from a collecting pipe.

At present, technical water supply systems of large pump stations built in China basically adopt the technical scheme, and at present, part of pump stations are transformed into water-cooling or air-cooling forced circulation water supply systems, but outdoor heat exchangers and cooling fans are additionally required to be arranged, so that the energy consumption of the system is still high. From the operation management practice of the existing large-scale pump station, the water-cooling open type technical water supply system mainly has the following problems:

1. the quality of inlet water is poor, and the winding of a pump set impeller and the blockage of a pipe valve and a heat exchanger frequently occur;

2. the problems of corrosion, perforation and the like of pipelines of the circulating cooling system exist;

3. the technical water supply system has high energy consumption and extremely low cooling efficiency;

4. the system has large investment on primary equipment and high management and maintenance cost.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem, the utility model provides a pump station water-cooling seals circulation water supply system can solve pipeline jam and corrosion, improve cooling efficiency, reduces the energy consumption, reduces the management maintenance cost.

The utility model provides a following technical scheme:

a pump station water-cooling closed circulation water supply system comprises a motor layer, an intermediate layer and a water pump layer which are sequentially arranged from top to bottom, wherein a main motor is arranged at the top of the pump station, a rotating shaft penetrating through the motor layer, the intermediate layer and the water pump layer is arranged on the main motor, an upper guide bearing and a lower guide bearing are arranged on the rotating shaft positioned on the motor layer, the motor layer further comprises an upper oil chamber covering the upper guide bearing and a lower oil chamber covering the lower guide bearing, a packing box is arranged on the rotating shaft positioned on the intermediate layer, a bottom bearing is arranged on the rotating shaft positioned on the water pump layer, and the water pump layer further comprises a water chamber covering the bottom bearing;

the water supply system comprises a closed circulation heat dissipation unit for dissipating heat of the upper guide bearing, the upper oil chamber, the lower guide bearing and the lower oil chamber and an open water supply heat dissipation unit for dissipating heat of the stuffing box, the bottom bearing and the water chamber.

Preferably, the closed circulation heat dissipation unit comprises a heat exchanger which forms a circulation loop with the upper oil chamber through a first pipeline, the lower oil chamber forms a parallel structure with the upper oil chamber through the first pipeline, and the first pipeline is provided with a circulation pump.

Preferably, the closed circulation heat dissipation unit further comprises an automatic water replenishing tank, a first temperature and pressure sensor, a flow meter and a first stop valve which are arranged on the first pipeline, the first pipeline at the position of the automatic water replenishing tank is provided with a first stop valve and an automatic exhaust valve, and the first pipelines at the positions of the upper oil chamber and the lower oil chamber are provided with first regulating valves.

Preferably, open water supply heat dissipation unit is including arranging in order and communicating coarse strainer chamber, well filter chamber and smart filter chamber in proper order, the particle diameter that all is equipped with filter material and filter material in coarse strainer chamber, well filter chamber and the smart filter chamber reduces in proper order, coarse strainer chamber bottom is equipped with the water inlet, smart filter chamber top is equipped with out the water pipeline, be equipped with the dive booster pump on the water pipeline, it links to each other with packing box, hydroecium respectively to go out the water pipeline through the second pipeline, packing box, hydroecium link to each other with the waste water runner through the second pipeline respectively.

Preferably, the open water supply heat dissipation unit further comprises a second temperature and pressure sensor, a second stop valve and a second check valve which are arranged on the second pipeline, and a second regulating valve is arranged on the second pipeline at the stuffing box and the water chamber.

The utility model has the advantages that:

1. the utility model discloses a cooling medium preference in the closed circulation radiating unit selects for use the pure water, has that specific heat is big, with low costs, environmental protection, safety, no corruption etc. have a bit, but pipeline flow, pressure are confirmed according to the system's needs to guarantee cooling system and operate in the no jam non-corrosion environment safe and stable for a long time. By adopting the pipeline type circulating pump, the whole energy consumption of the cooling circulation can be reduced to about one tenth of that of the original double centrifugal type increased pump.

2. The utility model discloses an open water supply heat dissipation unit changes original wing wall cavity compartment into coarse filter chamber, well filter chamber, smart filter chamber and fills corresponding filter material, and the pressurized water filters the back through the filter material, gets rid of most particle impurity, is cooling down through the second pipeline to packing box, hydroecium dispels the heat, utilizes building structure space to practice thrift a large amount of investments, and the while can effectually prevent the pipeline through filterable water and block up.

Drawings

FIG. 1 is a schematic view of a water supply system;

FIG. 2 is a schematic structural diagram of a closed-cycle heat dissipation unit;

fig. 3 is a schematic structural view of the open water supply heat radiating unit.

The designations in the drawings have the following meanings:

10-motor layer 11-upper guide bearing 12-lower guide bearing 13-upper oil chamber 14-lower oil chamber 20-intermediate layer 21-stuffing box 30-water pump layer 31-bottom bearing 32-water chamber 40-main motor 41-rotating shaft

50-closed circulation heat radiating unit 51-first pipeline 52-heat exchanger 53-circulating pump 54-automatic water replenishing tank 55-first temperature and pressure sensor 56-flowmeter 57-first stop valve 58-first check valve 59-automatic exhaust valve 591-first regulating valve

60-open water supply heat dissipation unit 61-rough filtration chamber 611-water inlet 62-middle filtration chamber 63-fine filtration chamber 631-water outlet pipeline 64-filter material 65-submersible booster pump 66-second pipeline 67-wastewater channel 68-second temperature and pressure sensor 69-second stop valve 691-second check valve 692-second regulating valve

70-water line 71-lowest water line

Detailed Description

The present invention will be described in detail with reference to the following embodiments.

Example 1

As shown in fig. 1-3, a water-cooled closed circulation water supply system for a pump station comprises a motor layer 10, an intermediate layer 20 and a water pump layer 30 which are sequentially arranged from top to bottom, wherein a main motor 40 is arranged at the top of the pump station, a rotating shaft 41 penetrating through the motor layer 10, the intermediate layer 20 and the water pump layer 30 is arranged on the main motor, an upper guide bearing 11 and a lower guide bearing 12 are arranged on the rotating shaft 41 of the motor layer 10, the motor layer 10 further comprises an upper oil chamber 13 covering the upper guide bearing 11 and a lower oil chamber 14 covering the lower guide bearing 12, a packing box 21 is arranged on the rotating shaft 41 of the intermediate layer 20, a bottom bearing 31 is arranged on the rotating shaft 41 of the water pump layer 30, and the water pump layer 30 further comprises a water chamber 32 covering the bottom bearing 31;

the water supply system comprises a closed circulation heat dissipation unit 50 for dissipating heat of the upper guide bearing 11, the upper oil chamber 13, the lower guide bearing 12 and the lower oil chamber 14, and an open water supply heat dissipation unit 60 for dissipating heat of the stuffing box 21, the bottom bearing 31 and the water chamber 32.

Example 2

In addition to embodiment 1, as shown in fig. 2, the closed-cycle heat dissipation unit 50 includes a heat exchanger 52 forming a circulation loop with the upper oil chamber 13 through a first pipeline 51, the lower oil chamber 14 and the upper oil chamber 13 form a parallel structure through the first pipeline 51, and a circulation pump 53 is provided on the first pipeline 51.

The closed circulation heat dissipation unit 50 further includes an automatic water replenishing tank 54, a first temperature and pressure sensor 55, a flow meter 56 and a first stop valve 57 which are arranged on the first pipeline 51, a first check valve 58 and an automatic exhaust valve 59 are arranged on the first pipeline 51 at the position of the automatic water replenishing tank 54, and first regulating valves 591 are arranged on the first pipelines 51 at the positions of the upper oil chamber 13 and the lower oil chamber 14.

Example 3

On embodiment 1's basis, as shown in fig. 3, open water supply radiating element 60 is including arranging in order and communicating coarse filter chamber 61, well filter chamber 62 and fine filtration chamber 63 in proper order, the particle size that all is equipped with filter material 64 and filter material in coarse filter chamber 61, well filter chamber 62 and the fine filtration chamber 63 reduces in proper order, coarse filter chamber 61 bottom is equipped with water inlet 611, fine filter chamber 63 top is equipped with outlet pipe way 631, be equipped with dive booster pump 65 on the outlet pipe way 631, outlet pipe way 631 links to each other with filler box 21, hydroecium 32 respectively through second pipeline 66, filler box 21, hydroecium 32 link to each other with waste water runner 67 through second pipeline 66 respectively.

The open water supply heat radiation unit 60 further includes a second temperature and pressure sensor 68, a second stop valve 69 and a second check valve 691 arranged on the second pipeline 66, and a second regulating valve 692 is arranged on the second pipeline 66 at the stuffing box 21 and the water chamber 32.

The working process of the utility model is as follows:

the working process of the closed circulation heat dissipation unit is characterized in that a station front pool is used for water inflow and serves as a peripheral cooling environment of a water supply system, a heat exchanger is arranged in the heat exchanger, purified water serves as cooling medium, a circulating pump is started, the cooling medium flows in a first pipeline in a circulating mode, an upper guide bearing, an upper oil chamber, a lower guide bearing and heat in a lower oil chamber are taken away, heat exchange is completed through the heat exchanger, the circulating pump and a stop valve are adjusted in real time through parameters of a first temperature and pressure sensor and a flowmeter, the best heat dissipation effect is obtained, and an automatic water replenishing tank can replenish water lost in the first pipeline in real time.

The working process of the open water supply and heat dissipation unit is that pressurized water enters from a water inlet of the coarse filtration chamber and sequentially passes through the middle filtration chamber and the fine filtration chamber, filter materials in the coarse filtration chamber are made of block stones, filter materials in the middle filtration chamber are broken stones, filter materials in the fine filtration chamber are made of fine sand, and pressurized water obtained by three-stage filtration is pressurized by the submersible booster pump, then takes away heat in the stuffing box and the water chamber through the second pipeline and is finally discharged through the waste water pipeline.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A pump station water-cooling closed circulation water supply system is characterized in that the pump station comprises a motor layer (10), a middle layer (20) and a water pump layer (30) which are sequentially arranged from top to bottom, the top of the pump station is provided with a main motor (40), the main motor (40) is provided with a rotating shaft (41) which penetrates through the motor layer (10), the middle layer (20) and the water pump layer (30), the rotating shaft (41) positioned on the motor layer (10) is provided with an upper guide bearing (11) and a lower guide bearing (12), the motor layer (10) also comprises an upper oil chamber (13) coated with the upper guide bearing (11) and a lower oil chamber (14) coated with the lower guide bearing (12), a stuffing box (21) is arranged on a rotating shaft (41) positioned on the middle layer (20), a bottom bearing (31) is arranged on the rotating shaft (41) positioned on the water pump layer (30), the water pump layer (30) also comprises a water chamber (32) coated on the bottom bearing (31);

the water supply system comprises a closed circulation heat dissipation unit (50) for dissipating heat of an upper guide bearing (11), an upper oil chamber (13), a lower guide bearing (12) and a lower oil chamber (14), and an open water supply heat dissipation unit (60) for dissipating heat of a stuffing box (21), a bottom bearing (31) and a water chamber (32).

2. The pump station water-cooling closed circulation water supply system according to claim 1, wherein the closed circulation heat dissipation unit (50) comprises a heat exchanger (52) forming a circulation loop with the upper oil chamber (13) through a first pipeline (51), the lower oil chamber (14) and the upper oil chamber (13) form a parallel structure through the first pipeline (51), and a circulation pump (53) is arranged on the first pipeline (51).

3. The pump station water-cooling closed circulation water supply system according to claim 2, wherein the closed circulation heat dissipation unit (50) further comprises an automatic water supply tank (54), a first temperature and pressure sensor (55), a flow meter (56) and a first stop valve (57) which are arranged on the first pipeline (51), the first pipeline (51) at the position of the automatic water supply tank (54) is provided with a first check valve (58) and an automatic exhaust valve (59), and the first pipelines (51) at the positions of the upper oil chamber (13) and the lower oil chamber (14) are provided with first regulating valves (591).

4. The pump station water-cooling closed circulation water supply system according to claim 1, the open water supply heat radiation unit (60) comprises a coarse filter chamber (61), a middle filter chamber (62) and a fine filter chamber (63) which are arranged in sequence and communicated in sequence, the coarse filter chamber (61), the middle filter chamber (62) and the fine filter chamber (63) are all provided with filter materials (64), the particle sizes of the filter materials (64) are reduced in sequence, a water inlet (611) is arranged at the bottom of the coarse filtering chamber (61), a water outlet pipeline (631) is arranged at the top of the fine filtering chamber (63), the water outlet pipeline (631) is provided with a diving booster pump (65), the water outlet pipeline (631) is respectively connected with the stuffing box (21) and the water chamber (32) through a second pipeline (66), the stuffing box (21) and the water chamber (32) are respectively connected with a wastewater flow channel (67) through a second pipeline (66).

5. The pump station water-cooling closed circulation water supply system according to claim 4, wherein the open water supply heat dissipation unit (60) further comprises a second temperature and pressure sensor (68), a second stop valve (69) and a second check valve (691) arranged on the second pipeline (66), and second adjusting valves (692) are arranged on the second pipelines (66) at the stuffing box (21) and the water chamber (32).