This standard specifies the types, parameters and main dimensions of mechanical seals for submersible electric pumps, model representation methods, technical requirements, test methods and inspection rules, installation and use requirements, etc. This standard applies to mechanical seals for submersible electric pumps. Its working parameters are: sealing medium pressure -0.05~0.5MPa, sealing medium temperature 0~80℃, rotation speed not more than 3000r/min, the medium is water, muddy water, oil and sewage with a pH value of 6.5~8. JB/T 5966-1995 Mechanical seal for submersible electric pumps JB/T5966-1995 Standard download and decompression password: www.bzxz.net

J22 | | tt | | JB |
Ministry of Machinery Industry of the People's Republic of China
Implemented on 1996-07-01
Released
Mechanical Industry Standards of the People's Republic of China
Mechanical Seals for Submersible Electric Pumps
1 Subject content and scope of application
JB/T5966-95
JB/T5966-91
This standard specifies the type of mechanical seal for submersible electric pumps , parameters and main dimensions, model representation methods, technical requirements, test methods and inspection rules, installation and use requirements, etc. This standard is applicable to mechanical seals for submersible electric pumps. Its working parameters are: sealing medium pressure - 0.05~0.5MPa, sealing medium temperature 0~80C, rotation speed not more than 3000/min, medium is water, muddy water, oil and pH value It is 6.5~8 sewage. 2 Reference standards
GB1184
GB6556
GB10444
JB4127
JB4236
JB/T6374
JB/T7757. 1
JB/T7757.2
ZBJ22003
ZBJ22005
ZBJ22006
ZBJ22017
3 model representation method
shape Mechanical seal type, main dimensions, materials and identification marks Mechanical seal product model compilation method
Mechanical seal technical conditions
Mechanical seal test specifications
Mechanical Technical conditions of silicon carbide sealing rings for seals Cylindrical coil springs for mechanical seals
O-shaped rubber diagram for mechanical seals
Technical conditions of roughened carbide sealing rings for mechanical seals Lightweight mechanical seals||tt| |Technical Conditions for Acceptance of Mechanical Seal Products
Technical Conditions for Carbon Graphite Seal Rings used for machine seals. The model representation method shall comply with the provisions of GB10444 and GB6556. 4 Types, parameters, dimensions and material codes
4.1 Type codes
The basic type codes of mechanical seals for submersible electric pumps are U4001, U4002, UU4001, UU4002, UU4003, UU4004, UU4701.UU4702.
4.2 Working parameters and main dimensions
4.2.1U4001 and U4002 are single-end, single-spring, unbalanced mechanical seals. Their structural types and working parameters are shown in Table 1. The main dimensions are shown in Table 2.
4.2.2UU4001, UU4002, UU4003, UU4004, UU470I, and UU4702 are double-end, single-spring, unbalanced mechanical seals. Their structural types and working parameters are shown in Table 1, Table 3, Table 5, Table 6 and Table 8. The main dimensions are shown in Table 2, Table 4, Table 5, Table 7 and Table 9. 4.3 Material code
See Table 10 for commonly used material codes.
Approved by the Ministry of Machinery Industry on 1995-06-16
Implemented on 1996-07-01
Type
2
Type
Medium pressure | |tt | End face, single spring, unbalanced type U4001
U40t2
e
uU4001
L
UU4002
MPa||tt| |r/min
0. 03~0. 5
0~80
Oil, water and sewage with a pH value of 6.5~8
≤3000|| tt||lattice
view
10
12
14
16
18
20||tt| |22
24
25
28
30
32
33
35
38
40
43
45
48
50
53
55
Double| |tt||简
图
d,(h6)
10
12
14
16
18
20
22
24
25
28
30
32
33| |tt||35
38
40
43
45
48
50
53||tt ||55
JB/T5966-95
Table 2 U4001U4002, UU4001, UU4002 main dimensions d, max
20
22
24|| tt||26
32
34
36
38
39
42
44||tt| |46
47
49
54
56
59
61
64
66
69
71
d,(H8)
21
23
25
27||tt| |33
35
37
39
40
43
45
48
48
50
56
58
61
63
66
70
73|| tt||75
Table 3 UU4003 type and parameters
Double braided surface, single spring, unbalanced type
L
UU4003
Li ± 0 . 50
32. 5
32. 5
35.0
35.0
37.5
37.5
37.5|| tt||40. 0
40.0
42.5
42. 5
42.5
42.5
42.5
45.0
45.0
45.0
45.0
45. 0
47.5
47.5
47.5
mm
Lp± 0. 50
48. 0
48. 0
50. 6
50.6
55.0||tt| |55.0
55.0
57.6
57.6
60. 6
60.6
60. 6
60. 6
60. 6
66.2
66.2
66.2
66.2
66.2
70.7
70.7
70.7
3
as
parameter
number
formula
simplified
picture
with| |tt||Master
requirement
foot
4
work
work
parameter
number||tt ||Guide
10
12
13
14
15
16
20
Medium pressure
medium overflow
medium
speed
grid
JB/T5966-95
continued table 3||tt| |MPa
0. 05 ~ 0. 15
0~70
Water, oil and sewage with pH value of 6.5~8
t/min||tt ||3000
Table 4 Main dimensions of UU4003 type
d,(H6)
10
12
13
14||tt ||15
16
20
d+(H8)
26
28
25
30|| tt||30
32
44
Table 5UU4004 (QY-2.2kW) type, parameters and main dimensions double end, single spring, unbalanced type
UU4004
medium pressure
medium temperature
medium
rotation speed
shaft diameter
MPa
c||tt| |t/min
mm
≤0.3
<70
river water, well water
3000
20
Lp±0.3
34. 6
34.6
36
36
36
36
49||tt ||mm
Type
Business
Picture
Work
Work
Parameters
Number
Specifications
16
18
20
22
24
25
28
30| |tt||32
33
medium pressure
medium humidity
medium
speed
shaft diameter
d ,(h6)
16
18
20
22
24
25
28||tt| |30
32
33
d,(H8)
27
33
35
37|| tt||39
40
43
45
48
48
JB/T5966-95
Table 6UU4701 type and parameters
Double end, single spring, unbalanced type
UU4701bZxz.net
MPa
r/min
mm||tt| |≤0.3
0~70
Muddy water, bay water, etc.
≤3000
16~55
Table 7 Main dimensions of UU4701 type||tt| |Lyp
36
36
49
49
49
51
51
59
61
61
Specifications
35
38
40
43
45|| tt||48
50
53
55
d,(h6)
35
38
40
43
45
48
50
53
55
d,(H8)||tt| |50
56
58
61
63
66
70
73
75
mm
Lp
61
61
64.5
65
65
65|| tt||69,5
69.5
71
5
Type
Business
Picture
Industrial|| tt||work
parameter
effect
regulation
20
25
30
35||tt| |40
45
50
grid
sealing material
graphite impregnated resin
hot pressed graphite
lift Aluminum
Fumigated Silicon
Silicon Carbide
Tungsten Carbide
Chromium Steel
Nodular Iron
Tin Qingju||tt| |6
medium pressure
medium humidity
medium
rotation speed
shaft diameter
d
20||tt ||25
30
35
40
45
50
Code name
B
c
Q
o
V
E
P
N
JB/T5966-95||tt ||Table 8 UU4702 type types and parameters
Double-end face, single yellow, unbalanced type
UU4702
MPa
c
/min||tt ||mm
0. 05~0. 3
0~70
Muddy water, sewage, etc.
3000
20~50||tt| |Table 9 Main dimensions of UU4702 type
dt
38
44
50.
58.
64
66
72
Table 10
Auxiliary sealing materials
Nitrile rubber
Code name
P
D,| |tt||44
50
57
64
70
70
80
Bombs and others Structural parts
Chrome Dart Alloy
65Mn
Lun
49
51
59
61||tt| |64.5
65
69.5
mm
Code name
H
D
5 Technical requirements||tt| |JB/T5966—95
5.1 Mechanical seals for submersible electric tickets shall comply with the provisions of this standard and be manufactured in accordance with the drawings and technical documents approved by the prescribed procedures. 5.2 Technical requirements for main parts
5.2 .1 The flatness of the sealing end face of the sealing ring: the sealing ring of hard material shall not be greater than 0.0006mm; the sealing ring of soft material shall not be greater than 0.0009mm. 5.2.2 The sealing end face roughness of the sealing ring, the hard material sealing ring R, the value is 0.2μm: the soft material sealing ring R, the value is 0.4μm.
5.2.3
The sealing end face of the sealing ring shall not have defects such as cracks or scratches. 5.2.4
H8.
The surface roughness R of the contact part between the sealing ring and the auxiliary sealing ring is 3.2μm, and the outer circle or inner hole size tolerance is h8 or 5.2.5 The sealing ring and The parallelism of the contact end face of the auxiliary sealing ring should comply with the level 7 accuracy of GB1184. The verticality of the sealing end face of the outer circle or inner hole in contact with the auxiliary sealing ring of the sealing ring shall comply with the level 7 accuracy of GB1184. 5.2.6
Cemented carbide, carbon graphite sealing rings and silicon carbide sealing rings shall comply with the regulations of ZBJ22003, ZBJ22017 and JB/T6374 respectively.
5.2.8 The inlaid damage sealing ring needs to undergo an air tightness test. The test pressure is 0.5MPa and it must not leak for 3 minutes. 5.2.9 The spring should comply with the provisions of JB/T7757.1. 5.2.10
Rubber parts should comply with the regulations of JB/T7757.2. 5.2.11
The inner hole size tolerance of the spring seat and transmission seat is F9, and the surface roughness R is 3.2μm. 5.2.12 Stamping parts are not allowed to have burrs, wrinkles, rust spots, etc., and the mating parts with the auxiliary sealing rings are not allowed to have stripes that affect the sealing performance. Coated stamping parts are not allowed to have coating peeling off. 5.3 Mechanical seal performance requirements
5.3.1 Leakage amount; not more than 0.1mL/h. 5.3.2 Wear amount; clean water running test for 100 hours. The wear amount of any sealing ring shall not be greater than 0.02mm. 5.3.3 Working life; shaft diameter 10~40mm, lifespan is 3000h: shaft diameter 40~55mm, lifespan is 4000h. 6 Test methods and acceptance rules
6.1 The mechanical seal test shall be carried out in accordance with the provisions of JB4236. 6.2 The mechanical seal must undergo an air tightness test. The test pressure is 1.25 times the working pressure of the submersible pump, and the pressure must be maintained without bubbles for 5 minutes. 6.3 The acceptance rules shall be in accordance with ZBJ22006. 7Installation and use
Installation and use requirements are in accordance with JB4127. 8 Marking and packaging
Marking and packaging requirements are in accordance with JB4127, with additional instructions:
This standard is proposed and managed by the Hefei General Machinery Research Institute of the Ministry of Machinery and Quilt Industry. This standard is drafted by Suihua Mechanical Seals General Factory, with Tianjin Kelan Sealing Company and Shanghai Water System Plant Sealing Branch participating in the drafting. The main drafters of this standard are Wang Yadi, Dong Yaping, Liang Shuxian, Yu Hongkun, and Xu Lulu. 7
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