CN2830723Y - Booster of multi-stage externally circulating shielded pump - Google Patents
Booster of multi-stage externally circulating shielded pump Download PDFInfo
- Publication number
- CN2830723Y CN2830723Y CN 200520042436 CN200520042436U CN2830723Y CN 2830723 Y CN2830723 Y CN 2830723Y CN 200520042436 CN200520042436 CN 200520042436 CN 200520042436 U CN200520042436 U CN 200520042436U CN 2830723 Y CN2830723 Y CN 2830723Y
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- CN
- China
- Prior art keywords
- pump
- outer circular
- motor
- multistage
- outer circulation
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model relates to a pressurizing device for multistage outer circular shielding pumps, which comprises a multistage pump, an outer circular shielding motor and an exhaust valve, wherein a pressurizing device is arranged between the multistage pump and the outer circular shielding motor. The surface of a cylinder of the pressurizing device is provided with a thread groove with annular gaps. The outer circular shielding motor is provided with an outer circular pipe passage. One end of the outer circular pipe passage is arranged on the top end of the outer circular shielding motor, and the other end is communicated with a spitting section. The surface of the utility model is thread grooves. The mechanical energy of the outer circular shielding motor is transmitted to a vertical or horizontal pressurizing device for multistage outer circular shielding pumps through a main shaft which rotates at a high speed, the energy (comprises speed energy, pressure energy and position energy) of liquid is increased through the pressurizing device applying work for the conveyed liquid, the pressurizing device rotates at a high speed, and the liquid is forced to be conveyed to a pump cavity from a motor cavity for reaching the purpose of non-contact pressurizing for pumps. The utility model conveys liquid to the pump cavity from the motor cavity for generating pump conveying flow. Pressure generated by the utility model can increase the pressure of liquid flow in the motor cavity for accelerating liquid in the motor cavity flow into the pump cavity.
Description
Technical field
The utility model relates to water pump and fluid pump, the supercharging device that particularly a kind of multistage outer circulation type canned motorpump is used.
Background technique
The fluid that is used for outer circulation in the existing fluid pump generally can not flow back into the water pump chamber by motor cavity in time, the fluid that the heat that produces when motor stator and working rotor then is used for this part outer circulation is heated to gasification, therefore can't be lubricated and cool off forward and backward bearing unit and motor stator and rotor, cause the damage of shield electric machine thus.
Summary of the invention
Task of the present utility model provides a kind of multistage outer circulation type booster device for shielding pump, it has solved the fluid that is used for outer circulation in the existing fluid pump and can not be in time forward and backward bearing unit and motor stator and rotor has been lubricated and cools off the problem that causes shield electric machine to damage thus.
The technical solution of the utility model is as follows:
A kind of multistage outer circulation type booster device for shielding pump, it comprises multistage pump, outer circulation type shield electric machine and outlet valve, between described multistage pump and the outer circulation type shield electric machine supercharging device is housed, the periphery of supercharging device is provided with the thread groove of tool annular space; Described outer circulation type shield electric machine is equipped with external circulation line, and an end of external circulation line is placed in the top of outer circulation type shield electric machine, and the other end of external circulation line is then connected with the Spit Section.
The thread groove that the surface of booster device for shielding pump of the present utility model is made up of single screw thread or multiple thread, outer circulation type shield electric machine is passed to its mechanical energy vertical by the main shaft of high speed rotating or horizontal multi-stage outer circulation type booster device for shielding pump, and the supercharging device by high speed rotating does work to the fluid of carrying and increases the energy of fluid (comprise speed energy, pressure energy, position can), force fluid to be carried to the water pump chamber, to reach the purpose of pump with contactless supercharging from motor cavity.
The utility model is transported to the water pump chamber with fluid by motor cavity, produces " pumping is flowed ".The pressure that it produces can increase the pressure of liquid stream in the motor cavity, plays the effect that the fluid that quickens motor cavity flows to the water pump chamber.
Description of drawings
Fig. 1 is the structural representation of a kind of vertical multi-stage outer circulation type booster device for shielding pump of the present utility model.
Fig. 2 is the structural representation of a kind of horizontal multi-stage outer circulation type booster device for shielding pump of the present utility model.
Fig. 3 is that the vertical supercharging device of Fig. 1 is installed in the structural representation in the vertical multi-stage outer circulation type canned motorpump.
Fig. 4 is that the horizontal supercharging device of Fig. 2 is installed in the structural representation in the horizontal multi-stage outer circulation type canned motorpump.
Embodiment
Referring to Fig. 1 to Fig. 4, the utility model is a kind of multistage outer circulation type booster device for shielding pump, and it comprises multistage pump, outer circulation type shield electric machine, outlet valve and supercharging device.Multistage pump is made of pump shaft 2, two above impellers, stator, suction casing 1, stage casing, Spit Section 5 and turnbuckles 20.Two above impellers can be made up of first stage impeller 3, secondary impeller 4 and impeller 6, and they all are installed on the pump shaft 2.Turnbuckle 20 is strained and fixed suction casing 1, stage casing and Spit Section 5.Pump suction casing 1 and Spit Section 5 are respectively the Spit Section of the suction casing that sucks fluid and the fluid that spues.
Outer circulation type shield electric machine is made of motor stator 12, stator can 13, rotor 14, Rotor can 15, main shaft 21, front slide bearing 9, front shaft sleeve 10, forward thrust dish 11 and back sliding bearing 17, rear axle housing 18 and back thrust disc 16.Outer circulation type shield electric machine also is equipped with external circulation line 8, and an end of external circulation line 8 is placed in the top of outer circulation type shield electric machine, and the other end of external circulation line 8 is then connected with Spit Section 5.
As shown in Fig. 1 and Fig. 2, between multistage pump and the outer circulation type shield electric machine supercharging device 7 is installed, supercharging device 7 is a kind of contactless supercharging idol parts.Periphery at supercharging device 7 is provided with thread groove, and this thread groove has the annular space, can be made up of single screw thread, also can be made up of multiple thread.This supercharging device 7 adopts advanced contactless supercharging form, has the advantage of contactless supercharging, even its great advantage is to produce bigger gap between the supercharging idol part, also can plays effective pressurization, and make simple.
This supercharging device 7 can be placed in being connected and fixed of pump and motor and put, and also can be placed on the pump shaft 2 or motor shaft 21 of rotation, supercharging device 7 can also be placed in simultaneously on the pump shaft or motor shaft that puts and rotate that be connected and fixed.
In conjunction with referring to Fig. 1 and Fig. 2, this supercharging device 7 is placed in respectively on the running shaft of MODEL VERTICAL MULTISTAGE PUMP and horizontal type multi-stage pump again, under the certain situation of plenum diameter D and peripheral velocity V, counts i, lead angle α, axially groove width bg, axial facewidth b by the double thread head
L, groove depth d, the optimal design of supercharging radius clearance C and supercharging topping up length L with one heart the time, can farthest improve the boosting capability of spiral boosting device.Number in the figure 22 is water pump chambeies, the 23rd, and motor cavity, the 24th, circulation of fluid.
As shown in Figure 3, this supercharging device 7 is vertical supercharging device, is installed between vertical multi-stage canned motorpump and the outer circulation type shield electric machine, and outer circulation type shield electric machine is positioned at the top of vertical multi-stage canned motorpump.As shown in Figure 4, this supercharging device 7 is horizontal supercharging device, is installed between horizontal multi-stage canned motorpump and the outer circulation type shield electric machine, and outer circulation type shield electric machine is positioned at the sidepiece of horizontal multi-stage canned motorpump.
Supercharging device of the present utility model is when axle rotates, and spiral boosting device such as same screw pump make an end fluid be pumped into the other end, produces " pumping is flowed ", has improved boosting capability thus.
When vertical multi-stage outer circulation type canned motorpump shown in Figure 3 and horizontal multi-stage outer circulation type canned motorpump shown in Figure 4 work, after shield electric machine starts, the shield electric machine main shaft drives first stage impeller 3, secondary impeller 4 and impeller 6 high speed rotating, suction port place at first stage impeller 3 forms vacuum, fluid promptly sucks from suction casing 1 vertical, horizontal type multi-stage pump, increase energy (speed energy, pressure energy, position energy) step by step by multi-stage impeller, fluid is discharged by Spit Section 5.The fluid that is used for outer circulation on a small quantity enters shield electric machine through the outer circulating tube on the Spit Section 5, these fluids are by back sliding bearing 17, rear axle housing 18 and back thrust disc 16, enter in the gap of stator can 13 and Rotor can 15, again by front slide bearing 9, front shaft sleeve 10 and forward thrust dish 11, pass through the supercharging of supercharging device 7 again, get back to the suction port of impeller by the equalizing orifice of impeller 6, finish an outer circulation process.These fluids are lubricated front slide bearing 9, front shaft sleeve 10, forward thrust dish 11 and back thrust disc 16, back sliding bearing 17, rear axle housing 18, and the heat that produces when taking away motor stator 12 and rotor 14 work.
The thread rotary orientation of vertical multi-stage outer circulation type booster device for shielding pump 7 among Fig. 1 and the horizontal multi-stage outer circulation type booster device for shielding pump 7 among Fig. 2 all is left-handed, spiral boosting device 7 with the main shaft high speed rotating is transported to water pump chamber 22 with fluid by motor cavity 23, promptly produces " pumping is flowed " shown in arrow among the figure.The pressure that it produces can increase the pressure of liquid stream in the motor cavity, plays the effect that the fluid that quickens motor cavity flows to the water pump chamber, to reach the purpose of pump with contactless supercharging.Therefore, this part fluid that is used for outer circulation just can be in time be lubricated and cools off the stator and rotor of the forward and backward bearing unit of shield electric machine and motor, and final fluid is got back to the water pump chamber by the shield electric machine chamber, finishes its outer circulation process satisfactorily.
More than all embodiments only for the explanation the utility model usefulness, but not to restriction of the present utility model, those skilled in the art are under the situation that does not break away from spirit and scope of the present utility model, can also make various conversion or variation, so all technological schemes that are equal to should belong to the utility model category and limited by each claim.
Claims (5)
1. a multistage outer circulation type booster device for shielding pump is characterized in that, between described multistage pump and the outer circulation type shield electric machine supercharging device is housed, and the periphery of supercharging device is provided with the thread groove of tool annular space.
2. multistage outer circulation type booster device for shielding pump according to claim 1 is characterized in that described thread groove is made up of single screw thread.
3. multistage outer circulation type booster device for shielding pump according to claim 1 is characterized in that described thread groove is made up of multiple thread.
4. multistage outer circulation type booster device for shielding pump according to claim 1 is characterized in that described supercharging device is vertical supercharging device.
5. multistage outer circulation type booster device for shielding pump according to claim 1 is characterized in that described supercharging device is horizontal supercharging device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520042436 CN2830723Y (en) | 2005-06-14 | 2005-06-14 | Booster of multi-stage externally circulating shielded pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520042436 CN2830723Y (en) | 2005-06-14 | 2005-06-14 | Booster of multi-stage externally circulating shielded pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2830723Y true CN2830723Y (en) | 2006-10-25 |
Family
ID=37135650
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520042436 Expired - Fee Related CN2830723Y (en) | 2005-06-14 | 2005-06-14 | Booster of multi-stage externally circulating shielded pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2830723Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103857914A (en) * | 2011-05-20 | 2014-06-11 | 英国石油勘探运作有限公司 | Pump |
-
2005
- 2005-06-14 CN CN 200520042436 patent/CN2830723Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103857914A (en) * | 2011-05-20 | 2014-06-11 | 英国石油勘探运作有限公司 | Pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |