High-pressure boiler feed water pump

High-pressure boiler feed water pump

GENERAL 1 DESCRIPTION:  

High-pressure boiler feed water pump series are single stage vertical mixed flow pumps. The high-pressure boiler feed water pump is used to transfer clean water or other liquids with similar physical and chemical properties with water. The highest temperature of the pumped liquid can be 50℃. For the vertical volute pump the highest temperature of the pumped liquid can be 80℃(Oil lubricated bearing).HL pump series have distinguish features such as high efficiency, good cavitation performance (NPSH)ect, which are especially suitable for sites with heavy water level changes or higher head required. It is widely used in large-scale agricultural irrigation, civil supply and drainage and water circulation in industry power station, dock water circulation in industry power station, dock water lever control and other water conservancy projects.

 
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High-pressure boiler feed water pump Details

1200 H LB一12 A
A:Number of the blade; 12:Head(m) at design point;  B:Blades adjustable after dismantling
L:Vertical shaft; H:Mixed flow pump;  1200:Discharge diameter(mm)

HL pump series are mixed flow pump with blades adjustable after dismantling and mixed flow pump with blades adjustable without dismantling after running out or in operation. As for the High-pressure boiler feed water pumps with adjustable blades after dismantling, the blades and impeller hub are bolted together, “When the working condition is changed,you can loosen the blade nuts, take out the fixed pin,then rotate the blades to make the base line of the blades meet the angle line of the impeller hub that you need,then install the pin and fix the nuts to complete the adjustment.

As for the HL pumps with the blades adjustable without dismantling, the angle of the blades can be adjusted after running out or in operation. The blades angle can be changed to meet the head and capacity you need.Customer can adjust the blade angles according to the performance table by themselves subject to the actual conditions, otherwise the blades angles are at 0℃

 

High-pressure boiler feed water pumps series mainly consist of casing parts and rotor parts. Normally the casing parts consist of inlet pipe,impeller housing, diffuser, cone pipe, pump stool, base plate, discharge elbow, rubber bearing, and stuffing box assembly etc.
In small-medium size HL pumps inlet pipe is made as suction bell mouth while in large-scale HL pumps it is made as elbow pipe. The rotor parts consist of impeller assembly, shaft, coupling ect. Normally impeller assembly consisted of blades, hub, water guide taper etc. The hub is used to install the blades and blades adjustment construction. In small-medium size HL pumps hub is connected with shaft by key. in large scale HL pumps the upper parts of the hub is connected with the shaft flange and the lower parts are connected with the water guied taper.
Elbow type flow passage is normally used in large scale mixed flow pump. 3HL, 6HL pumps have H/D=1.2 plane volute bell type flow passage which is poured by concrete.The casing of volute type and diffuser type are different.Large-scale volute mixed flow pump casing consists of fixed diffuser, impeller housing, pump cover ect . Flow passage is rectangle double volute type which is poured by concrete. Fixed diffuser is pre-bury parts, which loaded the weight of the pump casing parts. In order to produce easily and ensure the installation quantity, the fixed diffused is designed as a whole part. 6HL pump is in split design in order to dismantle and transport easily. Diffuser type mixed flow pump casing consists of impeller housing,diffuser,discharge elbow etc.

Performance range:
Flow: Q=7.5~720m3/h
Head: H=390-1100m
Medium Temperature: T≤160℃

Structure:
Single casing segmental multi-stage centrifugal pump Import and export are vertically upward.

Shaft Seal:
Using Packing seal or Mechanical seal, and need Cooling water.

Bearing and balancing device:
Pump rotor pump shaft at both ends of the sliding bearing support, dilute oil lubrication, water cooling.The axial thrust of the rotor is balanced by the balance disc, and the equilibrium return water is returned to the suction section of the pump .

Transmission:
The High-pressure boiler feed water pumps through the elastic coupling (or diaphragm coupling) and drive (motor, turbine, diesel engine etc.) connected,  Clockwise rotation from the drive end to the pump.

Material:
Suction casing  Discharge casing  Channel ring:
High Quality steel;
The guide vane and impeller: Chrome;
Balance disc, balance: sleeve: Chrome;
The guide vane sleeve, sealing ring:
chromium molybdenum steel;
Shaft: chrome molybdenum steel;

Model specification:
DG   720   --------   85   X    5
DG:Multistage boiler feed pump;
720:Design point flow(m3/h);
85:Single-stage head (m);
5:Pump series;

Performance table

泵型号
Pump type

流量Q
Flow(m3/h)

扬程H
Head(m)

转速n
(r/min)

轴功率Pa
(kw)

泵效率η
(%)

允许汽蚀余量
Npsh(m)

电机功率P
(kw)

泵重W
(kg)

DG12-80X5

7.5
12.5
15.0

410
400
390

2980

38.1
42.6
48.3

22
32
33

2.9
3.0
4.0

55

630

DG12-80X6

7.5
12.5
15.0

492
480
468

2980

45.7
51.1
57.9

22
32
33

2.9
3.0
4.0

75

390

DG12-80X7

7.5
12.5
15.0

574
560
546

2980

53.3
59.6
67.6

22
32
33

2.9
3.0
4.0

75

749

DG12-80X8

7.5
12.5
15.0

656
640
624

2980

60.9
68.1
77.2

22
32
33

2.9
3.0
4.0

90

817

DG12-80X9

7.5
12.5
15.0

738
720
702

2980

68.5
76.6
86.9

22
32
33

2.9
3.0
4.0

90

886

DG12-80X10

7.5
12.5
15.0

820
800
780

2980

76.1
85.1
96.6

22
32
33

2.9
3.0
4.0

110

954

DG12-80X11

7.5
12.5
15.0

902
880
858

2980

83.7
93.6
106.2

22
32
33

2.9
3.0
4.0

132

1023

DG12-80X12

7.5
12.5
15.0

520
480
470

2980

91.4
102.1
115.9

22
32
33

2.9
3.0
4.0

132

1091

DG25-80X5

15.0
25.0
30.0

433
400
390

2980

52.0
57.9
69.3

34
47
46

3.2
3.5
5.0

75

630

 

Performance table

泵型号
Pump type

流量Q
Flow(m3/h)

扬程H
Head(m)

转速n
(r/min)

轴功率Pa
(kw)

泵效率η
(%)

允许汽蚀余量
Npsh(m)

电机功率P
(kw)

泵重W
(kg)

DG25-80X6

15.0
25.0
30.0

520
480
470

2980

62.5
69.5
83.5

34
47
46

3.2
3.5
5.0

90

690

DG25-80X7

15.0
25.0
30.0

607
560
546

2980

72.9
81.1
97.0

34
47
46

3.2
3.5
5.0

110

749

DG25-80X8

15.0
25.0
30.0

693
640
624

2980

83.3
92.7
110.8

34
47
46

3.2
3.5
5.0

132

817

DG25-80X9

15.0
25.0
30.0

780
720
707

2980

93.7
104.3
125.6

34
47
46

3.2
3.5
5.0

132

886

DG25-80X10

15.0
25.0
30.0

866
800
780

2980

104.1
115.9
138.5

34
47
46

3.2
3.5
5.0

160

954

DG25-80X11

15.0
25.0
30.0

953
880
858

2980

114.5
127.5
152.4

34
47
46

3.2
3.5
5.0

160

1023

DG25-80X12

15.0
25.0
30.0

1040
960
936

2980

125.0
139.1
166.2

34
47
46

3.2
3.5
5.0

200

1091

DG45-80X4

36
45
62

335
320
273

2980

63.2
68.8
79.5

52
57
58

3.9
4.0
5.5

90

580

DG45-80X5

36
45
62

418
400
341

2980

78.8
86.0
99.3

52
57
58

3.9
4.0
5.5

110

132

630

 

Performance table

泵型号
Pump type

流量Q
Flow(m3/h)

扬程H
Head(m)

转速n
(r/min)

轴功率Pa
(kw)

泵效率η
(%)

允许汽蚀余量
Npsh(m)

电机功率P
(kw)

泵重W
(kg)

DG45-80X6

36
45
62

502
480
409

2980

94.7
103.2
119.1

52
57
58

3.9
4.0
5.5

110

160

690

DG45-80X7

36
45
62

753
560
477

2980

110.4
120.3
138.9

52
57
58

3.9
4.0
5.5

160

749

DG45-80X8

36
45
62

669
640
545

2980

131.2
142.6
164.3

52
57
58

3.9
4.0
5.5

200

817

DG45-80X9

36
45
62

735
720
614

2980

138.6
154.8
178.7

52
57
58

3.9
4.0
5.5

200

886

DG45-80X10

36
45
62

837
800
682

2980

157.8
172.0
198.5

52
57
58

3.9
4.0
5.5

220

954

DG45-80X11

36
45
62

920
880
750

2980

173.5
189.2
218.3

52
57
58

3.9
4.0
5.5

250

1023

DG45-80X12

36
45
62

1004
960
818

2980

189.3
206.4
238.1

52
57
58

3.9
4.0
5.5

250

1091

DG85-80X5

54
85
108

440
400
350

2980

117.7
138.2
151.4

55
67
68

3.5
4.5
5.3

160

630

DG85-80X6

54
85
108

528
480
420

2980

141.2
165.8
181.7

55
67
68

3.5
4.5
5.3

200

690

 

Performance table

泵型号
Pump type

流量Q
Flow(m3/h)

扬程H
Head(m)

转速n
(r/min)

轴功率Pa
(kw)

泵效率η
(%)

允许汽蚀余量
Npsh(m)

电机功率P
(kw)

泵重W
(kg)

DG85-80X7

54
85
108

616
560
490

2980

164.7
193.5
211.9

55
67
68

3.5
4.5
5.3

220

749

DG85-80X8

54
85
108

704
640
560

2980

188.2
221.1
242.2

55
67
68

3.5
4.5
5.3

250

817

DG85-80X9

54
85
108

792
720
630

2980

211.8
248.8
272.5

55
67
68

3.5
4.5
5.3

280

886

DG85-80X10

54
85
108

880
800
700

2980

235.3
276.4
302.8

55
67
68

3.5
4.5
5.3

315

954

DG85-80X11

54
85
108

968
880
770

2980

258.8
304.0
333.0

55
67
68

3.5
4.5
5.3

355

1023

DG85-80X12

54
85
108

1056
960
840

2980

282.4
331.7
363.3

55
67
68

3.5
4.5
5.3

400

1091

DG150-100X5

120
150
180

535
492
450

2980

253.4
279.1
296.1

69
72
74

3.4
4.8
5.5

315

1583

DG150-100X6

120
150
180

630
591
540

2980

298.4
335.3
357.7

69
72
74

3.4
4.8
5.5

400

1735

DG150-100X7

120
150
180

735
690
630

2980

348.1
391.5
417.3

69
72
74

3.4
4.8
5.5

450

1885

 

 

Performance table

泵型号
Pump type

流量Q
Flow(m3/h)

扬程H
Head(m)

转速n
(r/min)

轴功率Pa
(kw)

泵效率η
(%)

允许汽蚀余量
Npsh(m)

电机功率P
(kw)

泵重W
(kg)

DG150-100X8

120
150
180

840
788
720

2980

397.8
447.1
468.0

69
72
74

3.4
4.8
5.5

500

2035

DG150-100X9

120
150
180

945
887
810

2980

447.6
503.3
536.6

69
72
74

3.4
4.8
5.5

560

2185

DG150-100X10

120
150
180

1050
985
900

2980

497.3
558.9
596.2

69
72
74

3.4
4.8
5.5

630

2335

DG200-100X5

140
200
240

555
500
475

2980

315.8
363.1
408.5

67
75
76

3.5
4.5
5.0

450

1583

DG200-100X6

140
200
240

666
600
570

2980

379.0
435.7
490.2

67
75
76

3.5
4.5
5.0

500

1735

DG200-100X7

140
200
240

777
700
665

2980

442.2
508.4
571.9

67
75
76

3.5
4.5
5.0

630

1885

DG200-100X8

140
200
240

888
800
760

2980

505.3
581.0
653.6

67
75
76

3.5
4.5
5.0

710

2035

DG200-100X9

140
200
240

999
900
855

2980

568.5
653.6
735.3

67
75
76

3.5
4.5
5.0

800

2185

DG200-100X10

140
200
240

1110
1000
950

2980

631.7
726.2
817.0

67
75
76

3.5
4.5
5.0

900

2335



Performance table

泵型号
Pump type

流量Q
Flow(m3/h)

扬程H
Head(m)

转速n
(r/min)

泵效率η
(%)

允许汽蚀余量
Npsh(m)

电机功率P
(kw)

泵重W
(kg)

DG280-100X5

196
280
336

550
500
460

2980

70
79
78

5.0
6.0
7.0

560

2600

DG280-100X6

196
280
336

660
600
552

2980

70
79
78

5.0
6.0
7.0

710

2750

DG280-100X7

196
280
336

770
700
644

2980

70
79
78

5.0
6.0
7.0

800

2900

DG280-100X8

196
280
336

880
800
736

2980

70
79
78

5.0
6.0
7.0

900

3050

DG280-100X9

196
280
336

990
900
828

2980

70
79
78

5.0
6.0
7.0

1000

3200

DG280-100X10

196
280
336

1100
1000
920

2980

70
79
78

5.0
6.0
7.0

1120

3350

DG450-100X5

315
450
540

530
400
450

2980

73
82
81

6.0
7.0
7.8

900

2600

DG450-100X6

315
450
540

636
600
540

2980

73
82
81

6.0
7.0
7.8

1000

2800

DG450-100X7

315
450
540

742
700
630

2980

73
82
81

6.0
7.0
7.8

1250

3000

 

Performance table

泵型号
Pump type

流量Q
Flow(m3/h)

扬程H
Head(m)

转速n
(r/min)

轴功率Pa
(kw)

泵效率η
(%)

允许汽蚀余量
Npsh(m)

电机功率P
(kw)

泵重W
(kg)

DG450-100X8

315
450
540

848
800
720

2980

996.5
1195.6
1307.2

73
82
81

6.0
7.0
7.8

1400

3200

DG450-100X9

315
450
540

954
900
810

2980

1121.1
1345.1
1470.6

73
82
81

6.0
7.0
7.8

1500

3400

DG450-100X10

315
450
540

1060
1000
900

2980

1245.6
1494.5
1634.0

73
82
81

6.0
7.0
7.8

1700

3600

DG600-120X5

420
600
720

630
600
550

2980

987.1
1195.6
1331.4

73
82
81

6.0
7.0
7.8

1400

3600

DG600-120X6

420
600
720

756
720
660

2980

1184.5
1434.7
1597.7

73
82
81

6.0
7.0
7.8

1600

3900

DG600-120X7

420
600
720

882
840
770

2980

1382.0
1673.8
1864.0

73
82
81

6.0
7.0
7.8

1900

4200

DG600-120X8

420
600
720

1008
960
880

2980

1579.4
1913.0
2130.2

73
82
81

6.0
7.0
7.8

2200

4500

 

DG45-80、DG85-80  high pressure boiler feed water pump structure


1

 

1

First stage

2

End stage

3

Stage casing

4

Diffusers

5

End diffuser

6

Balance room cover

7

Bearing frame

8

Balance sleeve

9

Mech Sealing ring

10

Non-balance cover

11

Fixed block

12

Guide key

13

Staves

14

Coupling assembly

15

Bearing A component

16

Bearing B component

17

Rotor assembly part

2

泵型号
Pump type

外形及安装尺寸outline and installation dimensions

法兰尺寸Flange dimensions

配带功率
P(kw)

泵部分
pump part

电机部分
motor part

泵部分pump part

电机部分
Motor part

进口
suction

出口
discharge

 

3

DG150 Feed water pump and installation size figure shape
4
5


103

Suction casing

104

Stage casing

105

discharge casing

106

Diffusers

117

Diffusers sleeve

214

Balance sleeve

307

Bearing

114

draw-in bolt

121

casing ring

201

shaft

202

Impeller

213

Balance disc

215

balance plate

219

coupling

 

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Shenyang No.1 Pump Co.,Ltd established a complete manufacturing system,
fully realizing the automatic production and processing.