CN202707624U - Small flow high-lift pump of hydrogenation device - Google Patents
Small flow high-lift pump of hydrogenation device Download PDFInfo
- Publication number
- CN202707624U CN202707624U CN201220415715.XU CN201220415715U CN202707624U CN 202707624 U CN202707624 U CN 202707624U CN 201220415715 U CN201220415715 U CN 201220415715U CN 202707624 U CN202707624 U CN 202707624U
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- pump
- lift
- letter body
- pump shaft
- sealed letter
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Abstract
The utility model relates to a pump of hydrogenation device of the petrochemical industry, particularly to a small flow high-lift pump of a hydrogenation device. A suction box is arranged on the inner portion of a pump casing, wherein the inner portion is in one side of a driving end. A suction side sealed box is arranged in the outer portion of the pump casing, wherein the out portion is in one side of the driving end. One side of the pump casing, at a non-driving end, is provided with a pump cover. A discharging side sealed box is arranged on an outer end face of the pump cover. A pump shaft penetrates the discharging side sealed box, the pump cover, the pump casing, the suction box and the suction side sealed box in sequence. Mechanical seals are respectively arranged between the pump shaft and the suction side sealed box and between the pump shaft and the discharging side sealed box. A balance mechanism is arranged on the pump shaft in a sleeved mode between the pump shaft and the pump cover. Two ends of the pump shaft are respectively provided with a drive-end bearing body arranged on the suction side sealed box and a non-driving end bearing body arranged on the discharging side sealed box. Multilevel impellers, multilevel guide vanes and multilevel middle pieces are arranged on the pump shaft arranged in the pump casing. A suction flange and a discharging flange are respectively arranged on the pump casing. The small flow high-lift pump of the hydrogenation device has the advantages of being small in flow and high in lift.
Description
Technical field
The utility model relates to petrochemical industry hydrogenation plant pump, specifically a kind of low-flow high-lift hydrogenation plant pump.
Background technique
The hydrogenation feed pump is one of important equipment of petrochemical industry, is the key equipment of hydrogenation plant, is the nucleus equipment of oil refinery hydrofinishing and the charging of hydrocracking unit Raw, and its main fed sheet of a media is not for containing the petroleum products of solid particle; This device is quite ripe with the present domestic technique of pump, but low-flow high-lift aspect good equipment without comparison also.
Along with the improvement of national large-scale petrochemical industry, medium and small private petroleum chemical enterprise flourish increases progressively fast to the demand of this hydrogenation feed pump.This type pump in the past is because performance is bad, and efficient is not high, and cost is too high, has been difficult to satisfy the needs of hydrofinishing and hydrocracking unit.
The model utility content
The purpose of this utility model is to provide a kind of low-flow high-lift hydrogenation plant pump.This hydrogenation plant as petrochemical process and other chemical industry product pumps, satisfies technical specification with pump fully, satisfies the usage requirement of petrochemical industry hydrofinishing and hydrocracking unit.
The purpose of this utility model is achieved through the following technical solutions:
The utility model comprises pump shaft, drive end bearing body, mechanical seal, suction side sealed letter body, sucks letter body, impeller, stator, stage casing, pump case, pump cover, non-driven-end bearing body, exhaust end sealed letter body and balanced controls, wherein the pump case inside that is positioned at drive end one side is provided with and sucks the letter body, the outside is equipped with suction side sealed letter body, the side that pump case is positioned at anti-drive end is equipped with pump cover, and described exhaust end sealed letter body is installed on the outside end face of pump cover; Described pump shaft passes exhaust end sealed letter body, pump cover, pump case, suction letter body and suction side sealed letter body successively, be equipped with mechanical seal between pump shaft and suction side sealed letter body and the exhaust end sealed letter body, be provided with the balanced controls that are set on the pump shaft between pump shaft and the pump cover; The two ends of described pump shaft are respectively equipped with and are installed in the drive end bearing body on the sealed letter body of suction side and are installed in non-driven-end bearing body on the exhaust end sealed letter body; Pump shaft in pump case is provided with multi-stage impeller, stator and stage casing; Be separately installed with on the described pump case and suck flange and the flange that spues.
Wherein: described pump case is double-shell structure, and shell is the pump barrel body of cartridge type, and inner casing is subdivision collection assembling structure radially; Described suction flange and the flange that spues are inserted respectively the top be welded in the pump barrel body, and the center line that sucks flange and the flange that spues is coplanar, and respectively perpendicular to the longitudinal center line of pump shaft; Described pump barrel body has the equal built-up welding of the stop portion that contacts that the 316L stainless protection layer is arranged with medium; The bottom of described pump barrel body is connected with discharge opeing and warming-up pipeline;
Impellers at different levels are positioned on the pump shaft step by step by the hot charging form, and the chopped-off head stage casing is installed in and sucks on the letter body, and remaining stage casing at different levels links to each other successively, and every grade of stator is installed on the stage casing at different levels; By stator stop pin location, be equipped with compressible wound gasket between final stage stator and the described pump cover between stator at different levels and the stage casing; Described impeller is centrifugal single suction impeller, and every grade of impeller is equipped with the front and back seal ring of balancing axial thrust;
Described balanced controls are born main axial force, comprise Balance disc, balance set and balance set pressing plate, wherein Balance disc is set on the pump shaft, axial cross section is T-shape, balance set is enclosed within on the less part of Balance disc diameter, between Balance disc and pump cover, the balance set pressing plate is enclosed within on the larger part of Balance disc diameter and is fixed on the pump cover, and described balance set is by balance set pressing plate axially locating; Described mechanical seal is that described suction letter body is provided with boring from flushing type mechanism sealing, and this boring is communicated with equilibrirm water pipeline on being installed in pump case, and oneself washes washing solution is provided for mechanical seal; Described equilibrirm water pipeline is born main axial force; Be provided with in the described drive end bearing body and be installed in sliding bearing on the pump shaft, be respectively equipped with the sliding bearing and the thrust disc that are installed on the pump shaft in the non-driven-end bearing body, wherein thrust disc is born residual axial force; All leave cooling chamber on described suction side sealed letter body and the exhaust end sealed letter body; The bottom of described pump case is respectively equipped with limiting stopper and positioning block.
Advantage of the present utility model and good effect are:
1. hydrogenation feed pump of the present utility model has the advantages that flow is little, lift is high, has the impeller hydraulic model of steep drop characteristic and the stator that is complementary with it, has reached the basic usability requirement of system to pump.
2. pump case of the present utility model is Double-casing, and inner housing and medium have the layer of the equal built-up welding 316L of the stop portion that contacts, and its thickness is 3mm at least, to increase anti-corrosion capacity, guarantees its working life; The center line of suction flange of the present utility model, the flange that spues is parallel to each other, and is on the same vertical plane, can satisfy the specific (special) requirements of installation.
3. impeller of the present utility model is centrifugal single suction impeller, and seal ring before and after every grade of impeller is equipped with can balancing axial thrust; Impeller, stator all adopt precision casting process, have guaranteed the performance that the user needs; Between pump cover and final stage stator, be provided with compressible wound gasket, can prevent the thermal expansion of rotor and the axial motion phenomenon that causes.
4. the utility model is born main axial force by balancing pipeline and two balancing drum mechanism, bears residual axial force by thrust disc, has strengthened the stability of pump group.
5. the utility model adopts the mechanical seal from flushing type and chilling (washing) flushing type outward, and the medium that certainly washes available pump self washes, and need not external water source; The accessible on-the-spot circulating water of chilling or steam.
6. the mechanical seal of the utility model drive end and anti-drive end seals whole unit, prevents the medium leakage.
7. all leave cooling chamber on suction side sealed letter body of the present utility model and the exhaust end sealed letter body, carry out equipment is lowered the temperature so that the scene passes into cooling water.
8. limiting stopper and the positioning block of the setting of the utility model pump barrel body bottom can prevent that vibration from heat expansion appearring and in equipment in operation process.
Description of drawings
Fig. 1 is internal structure schematic representation of the present utility model;
Fig. 2 is the left view of Fig. 1;
Wherein: 1 is pump shaft, and 2 is the drive end bearing body, and 3 are mechanical seal, and 4 is suction side sealed letter body, 5 for sucking flange, and 6 for sucking the letter body, and 7 is impeller, and 8 is stator, 9 is the stage casing, and 10 is the pump barrel body, and 11 are the flange that spues, and 12 is the final stage stator, 13 is pump cover, and 14 is the equilibrirm water pipeline, and 15 is thrust disc, and 16 is the non-driven-end bearing body, 17 is exhaust end sealed letter body, and 18 is the balance set pressing plate, and 19 is limiting stopper, 20 is positioning block, and 21 is Balance disc, and 22 is balance set.
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing.
As shown in Figure 1 and Figure 2, the utility model comprises pump shaft 1, drive end bearing body 2, mechanical seal 3, suction side sealed letter body 4, sucks letter body 6, impeller 7, stator 8, stage casing 9, pump case, pump cover 13, equilibrirm water pipeline 14, non-driven-end bearing body 16, exhaust end sealed letter body 17, balanced controls, limiting stopper 19 and positioning block 20, wherein pump case is double-shell structure, shell is the pump barrel body 10 of drum type, inner casing is subdivision collection assembling structure radially, and line supports centered by the pump case; Pump barrel body 10 adopts forging, and it has the equal built-up welding of the stop portion that contacts that the 316L stainless protection layer is arranged with medium, and its thickness is at least 3mm, to increase anti-corrosion capacity, guarantees the working life of pump barrel body 10.Pump shaft 1 is passed by inner casing and pump barrel body 10 inside, the inside that pump barrel body 10 is positioned at drive end one side is provided with the suction letter body 6 that is enclosed within on the pump shaft 1, outsidely is connected with the suction side sealed letter body 4 that is enclosed within on the pump shaft 1 by bolt, suck letter body 6 and locate by seam with pump barrel body 10, be provided with mechanical seal 3 between suction side sealed letter body 4 and the pump shaft 1.The side that pump barrel body 10 is positioned at anti-drive end is connected with the pump cover 13 that is enclosed within on the pump shaft 1 by bolt, tightens with king-bolt between pump cover 13 and the pump barrel body 10, and reserves top wire hole; Be connected with to be enclosed within the outer surface of pump cover 13 and tell side side sealing letter body 17 on the pump shaft 1, be provided with balanced controls between pump cover 13 and the pump shaft 1, be provided with mechanical seal 3 between exhaust end sealed letter body 17 and the pump shaft; Very crucial effect is played in the mechanical seal 3 of drive end and anti-drive end, and whole unit is sealed, and prevents the medium leakage.
It is ten grades that pump shaft 1 in pump barrel body 10 is provided with multi-stage impeller 7, stator 8 and stage casing 9(present embodiment), impeller 7 is centrifugal single suction impeller, seal ring before and after progression capable of regulating, every grade of impeller 7 are equipped with can balancing axial thrust; Impeller 7 is positioned on the pump shaft 1 step by step by the hot charging form, locates step by step by the impeller snap ring; Chopped-off head stage casing 9 is installed in and sucks on the letter body 6, and remaining stage casing 9 at different levels links to each other successively, and every grade of stator 8 is installed on the stage casing at different levels 9, positions by the stator stop pin between stators 8 at different levels and the stage casing 9, prevents that stator 8 from rotating; All carry out pretension by hexagon head bolt between the stage casings 9 at different levels, so that whole core bag can integral body shifted out or pack into, guarantee that assembling and maintenance are convenient; Be equipped with compressible wound gasket between final stage stator 12 and the described pump cover 13 so that pump cover 13 can be reliably the sealing of pump core, can also prevent the thermal expansion of pump shaft 1 and the axial motion phenomenon that causes.The utility model is small flow and high lift pump, and therefore impellers 7 at different levels and stator 8 all adopt precision casting process to guarantee superperformance, satisfy user's needs.
Balanced controls are born main axial force, comprise Balance disc 21, balance set 22 and balance set pressing plate 18, wherein Balance disc 21 is fixed on the pump shaft 1, axial cross section is T-shape, balance set 22 is enclosed within on the less part of Balance disc 21 diameters, between Balance disc 21 and pump cover 13, balance set pressing plate 18 is enclosed within on the larger part of Balance disc 21 diameters and is fixed on the pump cover 13, and described balance set 22 is by balance set pressing plate 18 compressions, axially locating.Balance disc 21 forms two radial clearances and an axial clearance with balance set 22, balance set pressing plate 18, realizes balancing axial thrust.
All leave cooling chamber on suction side sealed letter body 4 and the exhaust end sealed letter body 17, thereby guarantee to have all the time in the on-the-spot using process cooling water circulation by making the device temperature can be too not high.
Working principle of the present utility model is:
The utility model is the horizontal multi-stage double casing volute pump, and pump core bag is penetrated by anti-drive end, and the pump shaft 1 of drive end links to each other with gear-box, and gear-box is connected with motor.Hydrogenation plant of the present utility model is assembled on the same combined footing jointly with pump and gear-box and motor, by motor drive gear case (the motor output speed is low speed), thereby gear-box carries out speedup by internal structure drives the utility model, guarantees that the utility model turns round under fast state; And Lubricating-oil Station plays a part very crucial as the utility model oil-servicing facilities of (comprising motor, gear-box).
The utlity model has that flow is little, the lift high, can extensively promote the use in each large petrochemical plant; Of the present utility model succeeding in developing will provide reliable technical support for domestic aspect the low-flow high-lift hydrogenation plant.
Claims (10)
1. low-flow high-lift hydrogenation plant pump, it is characterized in that: comprise pump shaft (1), drive end bearing body (2), mechanical seal (3), suction side sealed letter body (4), suck letter body (6), impeller (7), stator (8), stage casing (9), pump case, pump cover (13), non-driven-end bearing body (16), exhaust end sealed letter body (17) and balanced controls, wherein the pump case inside that is positioned at drive end one side is provided with and sucks letter body (6), the outside is equipped with suction side sealed letter body (4), the side that pump case is positioned at anti-drive end is equipped with pump cover (13), and described exhaust end sealed letter body (17) is installed on the outside end face of pump cover (13); Described pump shaft (1) passes exhaust end sealed letter body (17), pump cover (13), pump case, suction letter body (6) and suction side sealed letter body (4) successively, be equipped with mechanical seal (3) between pump shaft (1) and suction side sealed letter body (4) and the exhaust end sealed letter body (17), be provided with the balanced controls that are set on the pump shaft (1) between pump shaft (1) and the pump cover (13); The two ends of described pump shaft (1) are respectively equipped with the drive end bearing body (2) that is installed on the suction side sealed letter body (4) and are installed in non-driven-end bearing body (16) on the exhaust end sealed letter body (17); Pump shaft in pump case (1) is provided with multi-stage impeller (7), stator (8) and stage casing (9); Be separately installed with on the described pump case and suck flange (5) and the flange that spues (11).
2. by low-flow high-lift hydrogenation plant pump claimed in claim 1, it is characterized in that: described pump case is double-shell structure, and shell is the pump barrel body (10) of cartridge type, and inner casing is subdivision collection assembling structure radially; Described suction flange (5) and the flange that spues (11) are inserted respectively the top be welded in pump barrel body (10), and the center line that sucks flange (5) and the flange that spues (11) is coplanar, and respectively perpendicular to the longitudinal center line of pump shaft (1); Described pump barrel body (10) has the equal built-up welding of the stop portion that contacts that the 316L stainless protection layer is arranged with medium.
3. by low-flow high-lift hydrogenation plant pump claimed in claim 2, it is characterized in that: the bottom of described pump barrel body (10) is connected with discharge opeing and warming-up pipeline.
4. by low-flow high-lift hydrogenation plant pump claimed in claim 1, it is characterized in that: impellers at different levels (7) are positioned on the pump shaft (1) step by step by the hot charging form, chopped-off head stage casing (9) is installed in and sucks on the letter body (6), remaining stage casing at different levels (9) links to each other successively, and every grade of stator (8) is installed on the stage casing at different levels (9); By stator stop pin location, be equipped with compressible wound gasket between final stage stator (12) and the described pump cover (13) between stator at different levels (8) and stage casing (9).
5. by low-flow high-lift hydrogenation plant pump claimed in claim 4, it is characterized in that: described impeller (7) is centrifugal single suction impeller, and every grade of impeller (7) is equipped with the front and back seal ring of balancing axial thrust.
6. by low-flow high-lift hydrogenation plant pump claimed in claim 1, it is characterized in that: described balanced controls are born main axial force, comprise Balance disc (21), balance set (22) and balance set pressing plate (18), wherein Balance disc (21) is set on the pump shaft (1), axial cross section is T-shape, balance set (22) is enclosed within on the less part of Balance disc (21) diameter, be positioned between Balance disc (21) and the pump cover (13), balance set pressing plate (18) is enclosed within on the larger part of Balance disc (21) diameter, and be fixed on the pump cover (13), described balance set (22) is by balance set pressing plate (18) axially locating.
7. by low-flow high-lift hydrogenation plant pump claimed in claim 1, it is characterized in that: described mechanical seal (3) is for to seal from flushing type mechanism, described suction letter body (6) is provided with boring, this boring is communicated with equilibrirm water pipeline (14) on being installed in pump case, and certainly washing for mechanical seal (3) provides washing solution; Described equilibrirm water pipeline (14) is born main axial force.
8. by low-flow high-lift hydrogenation plant pump claimed in claim 1, it is characterized in that: be provided with in the described drive end bearing body (2) and be installed in the upper sliding bearing of pump shaft (1), be respectively equipped with the sliding bearing and the thrust disc (15) that are installed on the pump shaft (1) in the non-driven-end bearing body (16), wherein thrust disc (15) is born residual axial force.
9. by low-flow high-lift hydrogenation plant pump claimed in claim 1, it is characterized in that: all leave cooling chamber on described suction side sealed letter body (4) and the exhaust end sealed letter body (17).
10. by low-flow high-lift hydrogenation plant pump claimed in claim 1, it is characterized in that: the bottom of described pump case is respectively equipped with limiting stopper (19) and positioning block (20).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220415715.XU CN202707624U (en) | 2012-08-21 | 2012-08-21 | Small flow high-lift pump of hydrogenation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220415715.XU CN202707624U (en) | 2012-08-21 | 2012-08-21 | Small flow high-lift pump of hydrogenation device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202707624U true CN202707624U (en) | 2013-01-30 |
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ID=47587931
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201220415715.XU Expired - Lifetime CN202707624U (en) | 2012-08-21 | 2012-08-21 | Small flow high-lift pump of hydrogenation device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202707624U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103195759A (en) * | 2013-04-12 | 2013-07-10 | 上海阿波罗机械股份有限公司 | Main feed pump |
| CN104005995A (en) * | 2013-10-21 | 2014-08-27 | 大连深蓝泵业有限公司 | Double-cylinder sectional type horizontal multilevel centrifugal pump |
| CN105626545A (en) * | 2016-03-29 | 2016-06-01 | 吉林省宇琦泵业有限公司 | Manufacturing process for small-flow high-lift double-shell multistage pump and pump shaft |
| WO2023151109A1 (en) * | 2022-02-10 | 2023-08-17 | 浙江水泵总厂有限公司 | Cooling structure of water pump, and cooling system provided with same |
-
2012
- 2012-08-21 CN CN201220415715.XU patent/CN202707624U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103195759A (en) * | 2013-04-12 | 2013-07-10 | 上海阿波罗机械股份有限公司 | Main feed pump |
| CN104005995A (en) * | 2013-10-21 | 2014-08-27 | 大连深蓝泵业有限公司 | Double-cylinder sectional type horizontal multilevel centrifugal pump |
| CN105626545A (en) * | 2016-03-29 | 2016-06-01 | 吉林省宇琦泵业有限公司 | Manufacturing process for small-flow high-lift double-shell multistage pump and pump shaft |
| CN105626545B (en) * | 2016-03-29 | 2017-11-07 | 吉林省宇琦泵业有限公司 | A kind of manufacture craft of low-flow high-lift bivalve multistage pump and pump shaft |
| WO2023151109A1 (en) * | 2022-02-10 | 2023-08-17 | 浙江水泵总厂有限公司 | Cooling structure of water pump, and cooling system provided with same |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130130 |