CN218971441U - Ultrahigh-lift conveying ultrahigh-temperature medium shielding pump - Google Patents
Ultrahigh-lift conveying ultrahigh-temperature medium shielding pump Download PDFInfo
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- CN218971441U CN218971441U CN202223087037.1U CN202223087037U CN218971441U CN 218971441 U CN218971441 U CN 218971441U CN 202223087037 U CN202223087037 U CN 202223087037U CN 218971441 U CN218971441 U CN 218971441U
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Abstract
The utility model relates to the technical field of shielding pumps, and provides an ultrahigh-lift conveying ultrahigh-temperature medium shielding pump, which comprises: a front pump head unit, a shielding motor unit, a rear pump head unit and a heat exchanger unit; the shielded motor unit includes: a stator assembly and a rotor; the stator assembly comprises a motor shell front cover, a motor shell, a stator and a motor shell rear cover; the front pump head unit and the rear pump head unit are respectively positioned at two ends of the shielding motor unit; the front pump head unit and the rear pump head unit are communicated through a pipeline; the heat exchanger unit includes: the heat exchanger main body, the medium inlet heat exchanger circulating pipe and the medium outlet heat exchanger circulating pipe; the heat exchanger main body is connected with the rear pump head unit through a medium inlet heat exchanger circulating pipe, and the heat exchanger main body is connected with the front pump head unit through a medium outlet heat exchanger circulating pipe. The utility model can effectively cool the shielding motor unit and realize the transportation of high-temperature medium.
Description
Technical Field
The utility model relates to the technical field of shielding pumps, in particular to an ultrahigh-lift conveying ultrahigh-temperature medium shielding pump.
Background
The shielding pump is an important device in the fields of chemical industry, petrochemical industry, chemical fiber, pharmacy, refrigeration, nuclear power and the like. The canned motor pump is a common body of a centrifugal pump and a canned motor. The rotor of the shielding motor and the impeller of the centrifugal pump are fixed on the same shaft, the rotor and the stator are separated by the shielding sleeve, the rotor rotates in the conveyed medium, and the power is transferred to the rotor through the magnetic field of the stator and then transferred to the impeller of the shielding pump.
The multistage canned motor pump that user used in the industry at present, impeller distribution is in the structure of canned motor one end, and the progression is less, and the lift that can realize is lower, uses impeller distribution to realize higher lift at motor both ends structure, but because canned motor is by itself conveying medium to realize motor cooling, when impeller distribution at motor both ends, the impeller that the pump conveying medium need reachs the impeller of the motor other end behind the motor through the motor, so in order to canned motor's cooling not burn the motor, the pump conveying medium temperature can not be too high, and high temperature medium influences multistage canned motor pump's operation. The prior multistage shielding pump cannot convey high-temperature media.
Disclosure of Invention
The utility model mainly solves the technical problem that the prior multistage canned motor pump cannot convey high-temperature media, and provides an ultrahigh-lift ultrahigh-temperature medium conveying canned motor pump which is used for effectively cooling a canned motor unit and conveying high-temperature media.
The utility model provides an ultra-high lift conveying ultra-high temperature medium shielding pump, which comprises: a front pump head unit, a shielding motor unit, a rear pump head unit and a heat exchanger unit;
the shielded motor unit includes: a stator assembly and a rotor; the stator assembly comprises a motor shell front cover, a motor shell, a stator and a motor shell rear cover;
the motor shell front cover and the motor shell rear cover are respectively connected with two ends of the motor shell, and the stator is arranged in the motor shell;
a stator shielding sleeve is embedded in the stator assembly, and the stator shielding sleeve is welded with a motor casing front cover and a motor casing rear cover respectively;
the outer circle part of the rotor is embedded with a rotor shielding sleeve, two ends of the rotor are respectively embedded with a rotor shielding plate, the rotor shielding sleeve is welded with the rotor shielding plates, and the rotor shielding plates are welded with the pump shaft;
the front pump head unit and the rear pump head unit are respectively positioned at two ends of the shielding motor unit; the front pump head unit and the rear pump head unit are communicated through a pipeline;
the pump shaft penetrates through the front pump head unit, the shielding motor unit and the rear pump head unit; the rear half part of the pump shaft is a hollow shaft, the tail end of the pump shaft is fixed with a balance disc, and a movable wear-resistant ring is fixed on the balance disc;
the heat exchanger unit includes: the heat exchanger main body, the medium inlet heat exchanger circulating pipe and the medium outlet heat exchanger circulating pipe; the heat exchanger main body is connected with the rear pump head unit through a medium inlet heat exchanger circulating pipe, and the heat exchanger main body is connected with the front pump head unit through a medium outlet heat exchanger circulating pipe.
Preferably, the front pump head unit includes: a suction end cap, an impeller mechanism, and a plurality of middle section housings;
the suction end cover is connected with the front end of the pump shaft and is fixedly connected with the first middle section shell of the front pump head unit;
each middle section shell of the front pump head unit is correspondingly arranged outside the impeller mechanism;
the impeller mechanism includes: the impeller adopts a multi-stage impeller structure; the impeller mechanism is mounted on the pump shaft.
Preferably, the rear pump head unit includes: the device comprises an outer shell, an impeller mechanism, a pump body and a plurality of middle-section shells;
the outer shell is connected with the rear end of the pump shaft, the outer shell is connected with the pump body, and the pump body is connected with the last middle section shell of the rear pump head unit;
each middle section shell of the rear pump head unit is correspondingly arranged outside the impeller mechanism.
Preferably, the front pump head unit is provided with a front connecting section; the front connecting section is fixed on the front cover of the motor casing through the front end pump head penetrating rod, the suction end cover and the middle section casing of the front pump head unit;
the rear pump head unit is provided with a rear connecting section; the rear connecting section is fixed on the motor shell rear cover through the rear end pump head penetrating bar, the outer shell, the pump body and the middle section shell of the rear pump head unit.
Preferably, the front connecting section is fixedly connected with a throttling ring at the front end of the pump head, and the front connecting section is connected with a circulating pipe of the medium outlet heat exchanger;
the rear connecting section is fixedly connected with a throttling ring at the rear end of the pump head, and the rear connecting section is connected with a circulating pipe of the medium inlet heat exchanger.
Preferably, the front connecting section and the rear connecting section are respectively provided with a circulation hole.
Preferably, a front bearing body and a rear bearing body are arranged in the shielding motor unit;
the front bearing body is fixed on the front cover of the motor casing;
the rear bearing body is fixed on the motor shell rear cover.
Preferably, the front bearing body and the rear bearing body are respectively provided with a circulation hole.
Preferably, a pair of sliding bearing assemblies are installed inside the shielded motor unit;
the pair of sliding bearing assemblies are arranged on the pump shaft and are fixedly connected with the front bearing body and the rear bearing body respectively.
According to the ultrahigh-lift conveying ultrahigh-temperature medium shielding pump, the external heat exchanger is arranged, the external heat exchanger and the shielding motor unit form independent circulation, the power of the independent circulation is an auxiliary impeller, the heat exchanger cools the independent circulation passing through the shielding motor unit in real time, the shielding motor is effectively cooled and is not burnt, and the pump head parts at the two ends of the shielding motor are connected through the pipeline to ensure that the main flow is not influenced; can convey medium with temperature less than or equal to 400 ℃ and has stable and reliable operation. The utility model can achieve ultrahigh lift and can convey ultrahigh temperature medium, and the operation is stable and reliable.
Drawings
FIG. 1 is a flow chart of an implementation of an ultrahigh-lift delivery ultrahigh-temperature medium shield pump provided by the utility model;
FIG. 2 is an enlarged partial view of the front and rear pump head units of FIG. 1;
FIG. 3 is an enlarged view of a portion of the motor of FIG. 1;
fig. 4 is an enlarged partial view of the circulation portion of fig. 1.
Reference numerals: 1. an impeller; 2. a guide vane; 3. a middle section housing; 4. a pump body; 5. a front bearing body; 6. a motor casing front cover; 7. a motor housing; 8. a stator; 9. a stator shield; 10. a pump shaft; 11. a rotor; 12. a rotor shield; 13. a rotor shielding plate; 14. a sliding bearing assembly; 15. a motor housing rear cover; 16. a rear bearing body; 17. static wear-resistant ring; 18. a dynamic wear ring; 19. a balancing disk; 20. the front end pump head penetrates through the bar; 21. penetrating the bar through the motor; 22. a pipeline; 23. a pump head front end step wheel; 24. a throttle ring at the front end of the pump head; 25. a front connecting section; 26. an auxiliary impeller ring; 27. an auxiliary impeller; 28. a shaft sleeve; 29. a throttle ring at the rear end of the pump head; 30. a rear connecting section; 31. a heat exchanger body; 32. medium enters a heat exchanger circulation pipe; 33. the medium is discharged out of the circulating pipe of the heat exchanger; 34. a suction end cap; 35. an outer housing; 36. the rear end pump head penetrates the bar.
Detailed Description
In order to make the technical problems solved by the utility model, the technical scheme adopted and the technical effects achieved clearer, the utility model is further described in detail below with reference to the accompanying drawings and the embodiments. It is to be understood that the specific embodiments described herein are merely illustrative of the utility model and are not limiting thereof. It should be further noted that, for convenience of description, only some, but not all of the matters related to the present utility model are shown in the accompanying drawings.
As shown in fig. 1 to 4, an ultrahigh-lift conveying ultrahigh-temperature medium shielding pump provided by an embodiment of the utility model includes: front pump head unit, canned motor unit, back pump head unit and heat exchanger unit.
The shielded motor unit includes: a stator assembly and a rotor 11; the stator assembly comprises a motor casing front cover 6, a motor casing 7, a stator 8 and a motor casing rear cover 15. The motor casing front cover 6 and the motor casing rear cover 15 are respectively connected with two ends of the motor casing 7, and the stator 8 is arranged inside the motor casing 7.
The stator assembly is internally embedded with a stator shielding sleeve 9, the stator shielding sleeve 9 is positioned between the stator 8 and the rotor 11, the stator shielding sleeve 9 is welded with the motor casing front cover 6 and the motor casing rear cover 15 respectively, and the shielding motor stator assembly is ensured to be isolated from a conveying medium through argon arc welding. The parts of the stator assembly are tightly connected through a motor penetrating bar 21. The motor casing front cover 6 and the front pump head unit are connected with the suction end cover 34 through the front end pump head penetrating bar 20, and the motor casing rear cover 15 and the rear pump head unit are connected with the outer shell 35 through the rear end pump head penetrating bar 36, so that the pump head unit is fixed. The shield motor unit is provided with a junction box connected with a lead wire of a coil wound on the stator 8.
The rotor 11 is characterized in that a rotor shielding sleeve 12 is inlaid at the outer circle of the rotor 11, rotor shielding plates 13 are inlaid at the two ends of the rotor 11 respectively, the rotor shielding sleeve 12 is welded with the rotor shielding plates 13, the rotor shielding plates 13 are welded with the pump shaft 10, and the rotor 11 is completely isolated from a conveying medium through argon arc welding.
The inside of the shielding motor unit is provided with a front bearing body 5 and a rear bearing body 16; the front bearing body 5 is fixed on the motor casing front cover 6 through screws; the rear bearing body 16 is fixed on the motor casing rear cover 15 through screws. The front bearing body 5 and the rear bearing body 16 are respectively provided with circulation holes, the circulation holes are uniformly distributed, one circulation hole is required to be right above, and the number and the size of the circulation holes are determined according to the circulation quantity of the shielding motor. A pair of slide bearing assemblies 14 are mounted inside the shielded motor unit; a pair of slide bearing assemblies 14 are provided on the pump shaft 10 and fixedly connected to the front bearing body 5 and the rear bearing body 16, respectively.
The front pump head unit and the rear pump head unit are respectively positioned at two ends of the shielding motor unit; the front pump head unit and the rear pump head unit are communicated through a pipeline 22 to form the whole pump head unit.
The front pump head unit includes: a suction end cap 34, an impeller mechanism, and a plurality of middle section casings 3; the suction end cover 34 is connected with the front end of the pump shaft 10, the suction end cover 34 is fixedly connected with the first middle section shell 3 of the front pump head unit, and the last middle section shell 3 of the front pump head unit is connected with the front connecting section 25. Each middle section shell 3 of the front pump head unit is correspondingly arranged outside the impeller mechanism; the impeller mechanism includes: the impeller 1 and the guide vane 2 arranged on the impeller 1, wherein the impeller 1 adopts a multi-stage impeller structure; the impeller mechanism is mounted on the pump shaft 10.
The rear pump head unit includes: an outer casing 35, an impeller mechanism, a pump body 4, and a plurality of middle-stage casings 3; the outer shell 35 is connected with the rear end of the pump shaft 10, the outer shell 35 is connected with the pump body 4, and the pump body 4 is connected with the last middle section shell 3 of the rear pump head unit; the first middle section housing 3 of the rear pump head unit is connected to the rear connection section 30. Each middle section casing 3 of the rear pump head unit is correspondingly arranged outside the impeller mechanism.
Specifically, the front pump head unit is provided with a front connecting section 25; the front connecting section 25 is fixed on the motor casing front cover 6 through the front end pump head penetrating bar 20, the suction end cover 34 and the middle section shell 3 of the front pump head unit. The front connecting section 25 is fixedly connected with a throttle ring 24 at the front end of the pump head, and the front connecting section 25 is connected with a medium outlet heat exchanger circulating pipe 33. The front connecting section 25 is provided with a circulation hole, and the circulation hole is positioned at the uppermost part of the part.
Specifically, the rear pump head unit is provided with a rear connecting section 30; the rear connecting section 30 is fixed on the motor casing rear cover 15 through a rear end pump head penetrating bar 36, an outer casing 35, a pump body 4 and a middle section casing 3 of the rear pump head unit. The rear connecting section 30 is fixedly connected with a throttle ring 29 at the rear end of the pump head, and the rear connecting section 30 is connected with a medium inlet heat exchanger circulating pipe 32. The rear connecting section 30 is provided with a circulation hole, and the circulation hole is positioned at the uppermost part of the part.
The pump shaft 10 penetrates through the front pump head unit, the shielding motor unit and the rear pump head unit; the rear half part of the pump shaft 10 is a hollow shaft, the tail end of the pump shaft 10 is fixedly provided with a balance disc 19, and a movable wear-resistant ring 18 is fixed on the balance disc 19.
The canned motor pump of the present utility model adds an external heat exchanger. The heat exchanger unit includes: a heat exchanger body 31, a medium inlet heat exchanger circulation tube 32 and a medium outlet heat exchanger circulation tube 33; the heat exchanger main body 31 is connected to the front pump head unit and the rear pump head unit, respectively. The heat exchanger main body 31 is connected with the rear pump head unit through a medium inlet heat exchanger circulating pipe 32, and the heat exchanger main body 31 is connected with the front pump head unit through a medium outlet heat exchanger circulating pipe 33. In the utility model, the circulating pipe is connected with the heat exchanger main body 31 through the flange, the tube side of the heat exchanger is a medium circulating channel, the shell side of the heat exchanger cools the medium entering the tube side of the heat exchanger through cooling water, and the heat exchanger main body 31 is arranged at the upper end or other parts such as the side surface of the pump through supporting legs, so that the uppermost part of the heat exchanger is higher than the pump cavity to realize the exhaust of the pump.
The ultra-high lift conveying ultra-high temperature medium shielding pump comprises a rotating part of a multistage shielding pump, wherein the rotating part comprises an impeller 1, an impeller 23, an auxiliary impeller 27, a shaft 10, a rotor 11, a pair of sliding bearing assemblies 14, a balance disc 19, a dynamic wear-resistant ring 18 and the like. The rotor cavity of the shielding motor unit is filled with conveying medium, the stator assembly of the shielding motor is isolated from the conveying medium through the stator shielding sleeve 9, and conveying medium is filled in the stator shielding sleeve 9.
The specific working process of the utility model is as follows: in order to realize ultra-high lift, the multistage canned motor pump is of a serial structure, and pump head units on two sides of the canned motor unit can be used forMore stages of impellers are arranged, the number of stages can reach 14, and the lift can reach 2000m. The ultra-high temperature medium is conveyed by starting the pump after the pumping of the multistage canned motor pump is completed, the multistage canned motor pump rotating component is supported by a pair of sliding bearings 14 and rotates in the conveying medium, most of the conveying medium is pressurized step by a multistage impeller mechanism of the pump head unit, and is discharged from an outlet through a pipeline 22 from the front pump head unit and a rear pump head unit, as shown in fig. 1 and 4
Circulation, this part being a high temperature medium, because the throttle ring 24 mounted on the front connecting section 25 and the throttle ring 29 mounted on the rear connecting section 30 act, +.>
The circulated high temperature medium passes through only the pump head unit. The heat exchanger main body 31, the heat exchanger circulating pipe 32 and the medium outlet heat exchanger circulating pipe 33 which are arranged outside the multistage canned motor pump form a set of independent circulation with the canned motor unit, the front connecting section 25, the auxiliary impeller 26, the auxiliary impeller opening ring 26, the front bearing body 5, the rear bearing body 16 and the rear connecting section 30, see the cross section of the figure 1 and the figure 4>
And (5) circulating. The circulating flow direction is that the medium cooled by the heat exchanger passes through the holes on the front connecting section 25, is pressurized by the auxiliary impeller 26 and passes through the holes on the front bearing body 5, flows through the gap between the stator shielding sleeve 9 and the rotor shielding sleeve 12 to cool the shielding motor, and the medium after absorbing the heat of the motor enters the heat exchanger again through the holes on the rear bearing body 16 and the rear connecting section 30 to cool. In this cycle, the auxiliary impeller 26 provides the cyclic power and the pressure is substantially equal to the main cycle +.>
The pressure of the front throttling ring 24 and the rear throttling ring 29 is equal, so that only a trace amount of high-temperature medium at the gap between the impeller 23 hub and the shaft sleeve 28 is exchanged with normal-temperature medium at the motor, and the shielding motor is well protected from being burnt by the high-temperature medium. Therefore, the utility model can realize ultra-high lift and main flow +.>
The temperature of the medium can reach 400 ℃ or less when the ultrahigh temperature medium is conveyed.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and not for limiting the same; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments is modified or some or all of the technical features are replaced equivalently, so that the essence of the corresponding technical scheme does not deviate from the scope of the technical scheme of the embodiments of the present utility model.
Claims (9)
1. An ultra-high lift delivery ultra-high temperature media canned motor pump, comprising: a front pump head unit, a shielding motor unit, a rear pump head unit and a heat exchanger unit;
the shielded motor unit includes: a stator assembly and a rotor (11); the stator assembly comprises a motor shell front cover (6), a motor shell (7), a stator (8) and a motor shell rear cover (15);
the motor casing front cover (6) and the motor casing rear cover (15) are respectively connected with two ends of the motor casing (7), and the stator (8) is arranged inside the motor casing (7);
a stator shielding sleeve (9) is embedded in the stator assembly, and the stator shielding sleeve (9) is welded with a motor casing front cover (6) and a motor casing rear cover (15) respectively;
the outer circle part of the rotor (11) is embedded with a rotor shielding sleeve (12), two ends of the rotor (11) are respectively embedded with a rotor shielding plate (13), the rotor shielding sleeve (12) is welded with the rotor shielding plates (13), and the rotor shielding plates (13) are welded with the pump shaft (10);
the front pump head unit and the rear pump head unit are respectively positioned at two ends of the shielding motor unit; the front pump head unit and the rear pump head unit are communicated through a pipeline (22);
the pump shaft (10) penetrates through the front pump head unit, the shielding motor unit and the rear pump head unit; the rear half part of the pump shaft (10) is a hollow shaft, the tail end of the pump shaft (10) is fixed with a balance disc (19), and a movable wear-resistant ring (18) is fixed on the balance disc (19);
the heat exchanger unit includes: a heat exchanger main body (31), a medium inlet heat exchanger circulating pipe (32) and a medium outlet heat exchanger circulating pipe (33); the heat exchanger main body (31) is connected with the rear pump head unit through a medium inlet heat exchanger circulating pipe (32), and the heat exchanger main body (31) is connected with the front pump head unit through a medium outlet heat exchanger circulating pipe (33).
2. The ultra-high lift delivery ultra-high temperature media canned motor pump according to claim 1, wherein the front pump head unit comprises: a suction end cover (34), an impeller mechanism and a plurality of middle section shells (3);
the suction end cover (34) is connected with the front end of the pump shaft (10), and the suction end cover (34) is fixedly connected with the first middle section shell (3) of the front pump head unit;
each middle section shell (3) of the front pump head unit is correspondingly arranged outside the impeller mechanism;
the impeller mechanism includes: the impeller (1) and the guide vane (2) are arranged on the impeller (1), and the impeller (1) adopts a multi-stage impeller structure; the impeller mechanism is mounted on a pump shaft (10).
3. The ultra high lift delivery ultra high temperature media canned motor pump according to claim 2, wherein the rear pump head unit comprises: an outer casing (35), an impeller mechanism, a pump body (4) and a plurality of middle section casings (3);
the outer shell (35) is connected with the rear end of the pump shaft (10), the outer shell (35) is connected with the pump body (4), and the pump body (4) is connected with the last middle section shell (3) of the rear pump head unit;
each middle section shell (3) of the rear pump head unit is correspondingly arranged outside the impeller mechanism.
4. A ultrahigh-lift delivery ultrahigh-temperature medium barrier pump according to claim 3, wherein the front pump head unit is fitted with a front connection section (25); the front connecting section (25) is fixed on the motor casing front cover (6) through the front end pump head penetrating bar (20), the suction end cover (34) and the middle section casing (3) of the front pump head unit;
the rear pump head unit is provided with a rear connecting section (30); the rear connecting section (30) is fixed on the motor casing rear cover (15) through a rear end pump head penetrating bar (36), an outer casing (35), a pump body (4) and a middle section casing (3) of the rear pump head unit.
5. The ultra-high lift delivery ultra-high temperature medium shield pump according to claim 4, wherein a front end throttle ring (24) of a pump head is fixedly connected to the front connecting section (25), and the front connecting section (25) is connected with a medium outlet heat exchanger circulating pipe (33);
the rear connecting section (30) is fixedly connected with a throttling ring (29) at the rear end of the pump head, and the rear connecting section (30) is connected with a circulating pipe (32) for medium entering the heat exchanger.
6. The ultrahigh-lift delivery ultrahigh-temperature medium barrier pump of claim 5, wherein the front connecting section (25) and the rear connecting section (30) are respectively provided with circulation holes.
7. The ultra-high lift delivery ultra-high temperature medium canned motor pump according to claim 1, wherein the canned motor unit is internally mounted with a front bearing body (5) and a rear bearing body (16);
the front bearing body (5) is fixed on a motor casing front cover (6);
the rear bearing body (16) is fixed on a motor casing rear cover (15).
8. The ultra-high lift delivery ultra-high temperature medium canned motor pump according to claim 7, wherein the front bearing body (5) and the rear bearing body (16) are respectively provided with circulation holes.
9. The ultra-high lift delivery ultra-high temperature medium canned motor pump according to claim 8, wherein the canned motor unit has a pair of sliding bearing assemblies (14) mounted therein;
a pair of sliding bearing assemblies (14) are arranged on the pump shaft (10) and are fixedly connected with the front bearing body (5) and the rear bearing body (16) respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223087037.1U CN218971441U (en) | 2022-11-17 | 2022-11-17 | Ultrahigh-lift conveying ultrahigh-temperature medium shielding pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223087037.1U CN218971441U (en) | 2022-11-17 | 2022-11-17 | Ultrahigh-lift conveying ultrahigh-temperature medium shielding pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218971441U true CN218971441U (en) | 2023-05-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223087037.1U Active CN218971441U (en) | 2022-11-17 | 2022-11-17 | Ultrahigh-lift conveying ultrahigh-temperature medium shielding pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218971441U (en) |
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2022
- 2022-11-17 CN CN202223087037.1U patent/CN218971441U/en active Active
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