CN207813948U - Novel B B2 high temperature high voltage resistant wear-resisting centrifugal pump configurations - Google Patents
Novel B B2 high temperature high voltage resistant wear-resisting centrifugal pump configurations Download PDFInfo
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- CN207813948U CN207813948U CN201721492937.0U CN201721492937U CN207813948U CN 207813948 U CN207813948 U CN 207813948U CN 201721492937 U CN201721492937 U CN 201721492937U CN 207813948 U CN207813948 U CN 207813948U
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Abstract
The utility model is related to a kind of novel B B2 high temperature high voltage resistants wear-resisting centrifugal pump configurations; it is respectively equipped with left wear-resistant liner and right wear-resistant liner on left pump cover and right pump cover medial surface; there is arc spiral case in the pump housing; arc ingress protection set is connected on arc spiral case; arc ingress protection covers and the material of left wear-resistant liner and right wear-resistant liner is antifriction alloy, and the main component of antifriction alloy is C, Mn, Si, Ni, Cr, Mo, Ti, RE and surplus Fe.A kind of novel B B2 high temperature high voltage resistants wear-resisting centrifugal pump configuration of the utility model, impeller both sides are equipped with replaceable wear-resistant liner, are effectively protected pump spiral case and are not washed；A replaceable hard alloy arc ingress protection set is added at outer runner cavity, 100% effectively prevent entrance granule medium to wash away spiral case outer flow passage, and pump spiral case service life will extend one times or so of time.
Description
Technical field
The utility model is related to the field of centrifugal pump, especially a kind of novel B B2 high temperature high voltage resistants wear-resisting centrifugal pump configuration.
Background technology
Current country's BB2 pump configuration uses have following features in chemical plant installations:(1) low net positive suction head (2) axis both ends make
It is supported, is operated steadily with duplex bearing.Such pump is largely used in the clean medium of conveying.Texaco coal gasification workshop section uses at present
Quench water pump, in inlet pressure >=8.45MPa, temperature>250 DEG C, under the operating mode of flow Q≤500m3/h, domestic all factories
Family is pumped with OH2 types, and machine seals service life and is less than two months.Gasification furnace changes a refractory brick in general 60 days or so, and blowing out is changed
Refractory brick must replace pump machine and seal, and in some producer's production processes, the envelope damage of OH2 pump machines moves back gas release repairing once, with regard to losing
Many millions.For this purpose, novel high-pressure, high temperature, wear-resisting BB2, which are pumped, applies on Quench water pump to replace tradition OH2 types pump, in solution
State disadvantage.Meanwhile novel fire resistant, high pressure BB2 pump discharges can do more Qmax=1200m3/h, conventional OH2 cantilever pumps are
It cannot achieve.
Utility model content
The technical problems to be solved in the utility model is：It is above-mentioned in order to solve the problems, such as, a kind of novel B B2 is provided
High temperature high voltage resistant wear-resisting centrifugal pump configuration can improve the service life of spiral case and machine envelope, it is super to fill up domestic coal gasification Quench water pump
High pressure (inlet pressure≤10MPa), big flow OH2 type pump machines seal the blank for being unable to long-term operation.
Technical solution adopted by the utility model to solve its technical problems is：A kind of novel B B2 high temperature high voltage resistants are wear-resisting
Centrifugal pump structure, including the pump housing, left pump cover, right pump cover, central rotating shaft and impeller offer axially extending bore in the pump housing
The upper through-hole being connected with axially extending bore, upper through-hole and axially extending bore form T type hole chambers, and left pump cover and right pump cover lead to respectively
Bolted cover is crossed in the left port and right output port of the pump housing, offers perforation on left pump cover and right pump cover, central rotating shaft is worn successively
The perforation of right pump cover, the perforation of the axially extending bore of the pump housing and left pump cover are crossed, is divided on the both ends outside portion of the central rotating shaft
It is not socketed with left bearing component and right bearing component, left internal thread hole, right pump cover are offered on the medial surface of the left pump cover
Medial surface on offer right internal thread hole, be respectively equipped with left wear-resistant liner and the right side on the left pump cover and right pump cover medial surface
Wear-resistant liner, left wear-resistant liner and right wear-resistant liner are close to by bolt lock to be connected in left internal thread hole and right internal thread, left resistance to
Mill lining plate and right wear-resistant liner are combined to form annular wear-resistant liner, have arc spiral case, the arc snail in the pump housing
The medial surface of shell and left pump cover, right pump cover lateral surface between form inner flow passage cavity, in the lateral surface and the pump housing of arc spiral case
Outer flow passage cavity is formed between side, on central rotating shaft, impeller is located in inner flow passage cavity and is located at the impeller set
On the inside of left wear-resistant liner and right wear-resistant liner, it is connected with arc ingress protection set on the arc spiral case, the arc enters
Mouth protective case and the material of left wear-resistant liner and right wear-resistant liner are antifriction alloy, the main component of the antifriction alloy
For C, Mn, Si, Ni, Cr, Mo, Ti, RE and surplus Fe.
According to mass percent, the antifriction alloy includes consisting of：C 2.2~2.5, Mn 0.5~0.8, Si
0.3~0.5, Ni 1.8~2.5, Cr 20~25, Mo 0.8~1.5, Ti 0.15~0.3, RE 0.02~0.04 and surplus
Fe, increases rare earth RE elements, and RE purifies crystal boundary, improves the corrosion resistance of crystal boundary；Ti elements are increased, Ti can purify steel
Water improves the erosion-resisting ability of alloy；The appropriate hardness and wearability for increasing phosphorus content and improving alloy, Cr suitably reduce, but
Between maintaining 20-25, while ensureing the corrosion resistance of material, cost has been saved, has coordinated the increase of C content, alloy whole
The hardness of body increased.
According to mass percent, the antifriction alloy includes consisting of：C 2.3、Mn 0.6、Si0.4、 Ni 2.1、
Cr 22, Mo 1.2, Ti 0.2, RE 0.03 and surplus Fe.
Left axle sleeve and right axle sleeve, left axle are respectively equipped between the lateral surface of the central rotating shaft and left pump cover and right pump cover
Set and right axle sleeve are located at the impeller center hole both sides on central rotating shaft, and left axle sleeve and right axle sleeve can ensure that main shaft zero is ground
Damage.
It is easy to connect in order to realize, between the front end face and right bearing component of the right pump cover, the front end face of left pump cover
It is respectively connected with bracket between left bearing component.
Be equipped with positioning step on the left wear-resistant liner and right wear-resistant liner, have on the bottom face of arc spiral case to
Lower extension with the matched extension step of positioning step.
The hardness of the antifriction alloy is HRC >=40, by quenching：1020 DEG C ' 2 hours air-cooled, using tempering：
After 300 DEG C ' 2 hours air-cooled, the hardness of antifriction alloy is HRC=58~60.
The wall thickness of the arc ingress protection set is 30~35mm.
The utility model has the beneficial effects that a kind of novel B B2 high temperature high voltage resistants wear-resistant centrifugal pump knot of the utility model
Structure tests hydraulic pressure 16MPa, single-stage impeller, fricton-tight metallic sheath, axis is short, duplex bearing supporting way, axis using high-wear-resistant alloy
Circular runout is minimum, and machine sealed service life at 10-12 months, is sealed than traditional OH2 cantilevereds pump machine and extends 5-6 times of service life；Impeller
Both sides are equipped with replaceable wear-resistant liner, are effectively protected pump spiral case and are not washed；Impeller both sides are equipped with left and right axle sleeve, it is ensured that main
Axis zero abrasion；Add a replaceable hard alloy arc ingress protection set at outer runner cavity, 100% effectively prevent into
Mouthful granule medium washes away spiral case outer flow passage, and pump spiral case service life will extend one times or so of time.
Description of the drawings
The utility model is further illustrated with reference to the accompanying drawings and examples.
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2 be in Fig. 1 K to schematic diagram.
1. pump housing in figure, 2. left pump covers, 3. right pump covers, 4. central rotating shafts, 5. impellers, 6. left bearing components, 7. right bearings
Component, 8. left wear-resistant liners, 9. right wear-resistant liners, 10. arc spiral cases, 11. arc ingress protection sets, 12. left axle sleeves, 13. is right
Axle sleeve, 14. brackets.
Specific implementation mode
The utility model is described in further detail presently in connection with attached drawing.These attached drawings are simplified schematic diagram,
Only illustrate the basic structure of the utility model in a schematic way, therefore it only shows composition related with the utility model.
A kind of novel B B2 high temperature high voltage resistants wear-resisting centrifugal pump configuration as shown in Figure 1, including the pump housing 1, left pump cover 2, right pump
Lid 3, central rotating shaft 4 and impeller 5, the upper through-hole for offering axially extending bore and being connected with axially extending bore in the pump housing 1, upper through-hole
Form T-type vestibule with axially extending bore, left pump cover 2 and right pump cover 3 respectively by bolted cover the pump housing 1 left port and right output port
On, offer perforation on left pump cover 2 and right pump cover 3, central rotating shaft 4 sequentially pass through the perforation of right pump cover 3, the pump housing 1 axial direction
The perforation of through-hole and left pump cover 2 is respectively equipped with left axle sleeve between the lateral surface of central rotating shaft 4 and left pump cover 2 and right pump cover 3
12 and right axle sleeve 13, left axle sleeve 12 and right axle sleeve 13 are located at the impeller center hole both sides on central rotating shaft 4, in right pump cover 3
Front end face on connecting bracket 14, right pump cover 3 connects right bearing component 7 by bracket 14, connected on the front end face of left pump cover 2
Bracket 14, left pump cover 2 connects left bearing component 6 by bracket 14, left internal thread hole is offered on the medial surface of left pump cover 2, right
Right internal thread hole is offered on the medial surface of pump cover 3, is respectively equipped on 3 medial surface of the left pump cover 2 and right pump cover left wear-resisting
Liner plate 8 and right wear-resistant liner 9, left wear-resistant liner 8 and right wear-resistant liner 9 are close to by bolt lock and are connected in left internal thread hole and the right side
On screw thread, left wear-resistant liner 8 and right wear-resistant liner 9 are combined to form annular wear-resistant liner, in left wear-resistant liner 8 and right wear-resistant liner
It is equipped with positioning step on 9, there is the extend downwardly and matched extension table of positioning step on the bottom face of arc spiral case 10
Rank, the pump housing 1 is interior to have arc spiral case 10, is formed between the medial surface of arc spiral case 10 and the lateral surface of left and right wear-resistant liner 2,3
Inner flow passage cavity, forms outer flow passage cavity between 1 medial surface of lateral surface and the pump housing of arc spiral case 10, and impeller 5 is sleeved on center
In shaft 4, impeller 5 is located in inner flow passage cavity and on 9 inside of left wear-resistant liner 8 and right wear-resistant liner, arc spiral case 10
It is connected with arc ingress protection set 11, the wall thickness of arc ingress protection set 11 is 30~35mm, arc ingress protection set 11 and a left side
The material of wear-resistant liner 8 and right wear-resistant liner 9 is antifriction alloy, and the hardness of antifriction alloy is HRC >=40, by quenching：
1020 DEG C ' 2 hours air-cooled, using tempering：After 300 DEG C ' 2 hours air-cooled, the hardness of antifriction alloy is HRC=58~60, resistance to
The main component of break-in gold is C, Mn, Si, Ni, Cr, Mo, Ti, RE and surplus Fe, according to mass percent, the resistance to break-in
Gold includes consisting of：C 2.3, Mn 0.6, Si0.4, Ni 2.1, Cr 22, Mo 1.2, Ti 0.2, RE 0.03 and surplus
Fe。
A kind of novel B B2 high temperature high voltage resistants wear-resisting centrifugal pump configuration of the utility model, in the upper connection of arc spiral case 10
Arc ingress protection set 11, arc ingress protection set 11 use antifriction alloy, entrance granule medium are effectively prevent to outflow spiral case
Road washes away, and will extend one times or so of time to pump spiral case service life, the left wear-resistant liner 8 in 5 both sides of impeller and the right side
Wear-resistant liner 9 quick and convenient can replace left wear-resistant liner 8 and right wear-resistant liner 9, be effectively protected the spiral case of left and right pump cover
It is not washed.
Table 1：
Described in chart 1 as above, the original hardness of the antifriction alloy employed in embodiment 1, casting is HRC=37.5,
Hardening system is：Quenching：950 DEG C of air-cooled, tempering in X2 hours：400 DEG C of X2 hours air-cooled, HRC=57, with for centrifugal pump, ring
There are water-gas in border, and there are CO2, the corrosion of the faintly acids such as H2S；Antifriction alloy employed in embodiment 2, the original of casting
Beginning hardness is HRC >=40, and hardening system is：Quenching：1020 DEG C ' 2 hours air-cooled, tempering：300 DEG C ' 2 hours air-cooled, HRC=
58；The original hardness of antifriction alloy employed in embodiment 3, casting is HRC >=40, and hardening system is：Quenching：1020
DEG C ' air-cooled, tempering in 2 hours：300 DEG C ' 2 hours air-cooled, HRC=59；Antifriction alloy employed in embodiment 4, casting
Original hardness is HRC >=40, and hardening system is：Quenching：1020 DEG C ' 2 hours air-cooled, tempering：300 DEG C ' 2 hours air-cooled, HRC
=59；The original hardness of antifriction alloy employed in embodiment 5, casting is HRC >=40, and hardening system is：Quenching：1020
DEG C ' air-cooled, tempering in 2 hours：300 DEG C ' 2 hours air-cooled, HRC=60, in conclusion the mass ratio used in embodiment 5 is most
It is good, it can be used for manufacturing centrifugal pump, resistance to CO2 in environment, the ability of the faintly acids such as H2S corrosion increases rare earth RE elements, RE is net
Changing crystal boundary, improves the corrosion resistance of crystal boundary, increase Ti elements, Ti can purify molten steel, improve the erosion-resisting ability of alloy,
The appropriate hardness and wearability for increasing phosphorus content and improving alloy, Cr suitably reduce, but between maintaining 20-25, ensure material
While corrosion resistance, cost has been saved.The increase of C content, the hardness of alloy entirety is coordinated to increased.
It is enlightenment, through the above description, related work people with the above-mentioned desirable embodiment according to the utility model
Member can carry out various changes and amendments in the range of without departing from this item utility model technological thought completely.This item is real
It is not limited to the contents of the specification with novel technical scope, it is necessary to which its technology is determined according to right
Property range.
Claims (5)
1. a kind of novel B B2 high temperature high voltage resistants wear-resisting centrifugal pump configuration, it is characterized in that：Including the pump housing (1), left pump cover (2), right pump
(3), central rotating shaft (4) and impeller (5) are covered, axially extending bore is offered in the pump housing (1) and is connected with axially extending bore
Upper through-hole, upper through-hole and axially extending bore form T-type vestibule, and left pump cover (2) and right pump cover (3) are respectively by bolted cover in the pump housing
(1) in left port and right output port, perforation is offered on left pump cover (2) and right pump cover (3), central rotating shaft (4) sequentially passes through
The perforation of right pump cover (3), the perforation of the axially extending bore of the pump housing (1) and left pump cover (2), the both ends of the central rotating shaft (4)
It is respectively sleeved on left bearing component (6) and right bearing component (7) on outside portion, is opened up on the medial surface of the left pump cover (2)
There is left internal thread hole, right internal thread hole is offered on the medial surface of right pump cover (3), the left pump cover (2) and right pump cover (3) are interior
Left wear-resistant liner (8) and right wear-resistant liner (9) are respectively equipped on side, left wear-resistant liner (8) and right wear-resistant liner (9) pass through spiral shell
Bolt-lock, which is close to, to be connected in left internal thread hole and right internal thread, and it is resistance to that left wear-resistant liner (8) and right wear-resistant liner (9) are combined to form annular
Mill lining plate, has arc spiral case (10) in the pump housing (1), the medial surface and left pump cover (2) of the arc spiral case (10),
Inner flow passage cavity, shape between the lateral surface and the pump housing (1) medial surface of arc spiral case (10) are formed between the lateral surface of right pump cover (3)
At outer flow passage cavity, the impeller (5) is sleeved on central rotating shaft (4), and impeller (5) is located in inner flow passage cavity and positioned at a left side
On the inside of wear-resistant liner (8) and right wear-resistant liner (9), it is connected with arc ingress protection set (11) on the arc spiral case (10),
The arc ingress protection set (11) and the material of left wear-resistant liner (8) and right wear-resistant liner (9) is antifriction alloy.
2. novel B B2 high temperature high voltage resistants wear-resisting centrifugal pump configuration according to claim 1, it is characterized in that：The center
It is respectively equipped with left axle sleeve (12) and right axle sleeve (13), left axle between the lateral surface and left pump cover (2) and right pump cover (3) of shaft (4)
Set (12) and right axle sleeve (13) are located at the impeller center hole both sides on central rotating shaft (4).
3. novel B B2 high temperature high voltage resistants wear-resisting centrifugal pump configuration according to claim 1, it is characterized in that：The right pump
It is respectively connected between the front end face and right bearing component (7) of lid (3), between the front end face of left pump cover (2) and left bearing component (6)
Bracket (14).
4. novel B B2 high temperature high voltage resistants wear-resisting centrifugal pump configuration according to claim 1, it is characterized in that：The left side is resistance to
It is equipped with positioning step on mill lining plate (8) and right wear-resistant liner (9), has on the bottom face of arc spiral case (10) and to extend downwardly
With the matched extension step of positioning step.
5. novel B B2 high temperature high voltage resistants wear-resisting centrifugal pump configuration according to claim 1, it is characterized in that：The arc
The wall thickness of ingress protection set (11) is 30~35mm.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721492937.0U CN207813948U (en) | 2017-11-09 | 2017-11-09 | Novel B B2 high temperature high voltage resistant wear-resisting centrifugal pump configurations |
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|---|---|---|---|
| CN201721492937.0U CN207813948U (en) | 2017-11-09 | 2017-11-09 | Novel B B2 high temperature high voltage resistant wear-resisting centrifugal pump configurations |
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| CN207813948U true CN207813948U (en) | 2018-09-04 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107725379A (en) * | 2017-11-09 | 2018-02-23 | 江苏永安泵业有限公司 | A kind of novel B B2 high temperature high voltage resistants wear-resisting centrifugal pump configuration |
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2017
- 2017-11-09 CN CN201721492937.0U patent/CN207813948U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107725379A (en) * | 2017-11-09 | 2018-02-23 | 江苏永安泵业有限公司 | A kind of novel B B2 high temperature high voltage resistants wear-resisting centrifugal pump configuration |
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