CN217813975U - Visual experimental apparatus of multistage centrifugal pump - Google Patents
Visual experimental apparatus of multistage centrifugal pump Download PDFInfo
- Publication number
- CN217813975U CN217813975U CN202222211725.8U CN202222211725U CN217813975U CN 217813975 U CN217813975 U CN 217813975U CN 202222211725 U CN202222211725 U CN 202222211725U CN 217813975 U CN217813975 U CN 217813975U
- Authority
- CN
- China
- Prior art keywords
- pipe section
- centrifugal pump
- multistage centrifugal
- impeller
- pump
- 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.)
- Active
Links
Images
Landscapes
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The utility model discloses a visual experimental apparatus of multistage centrifugal pump, including the transparent glass form intake pipe section, transparent glass form intermediate junction pipeline section and the transparent glass form spiral case that connect gradually, the one end of pump shaft passes spiral case, intermediate junction pipeline section in proper order and reachs the intake pipe section in, and is equipped with primary impeller and secondary impeller on the pump shaft respectively, and primary impeller is located the junction of intake pipe section and intermediate junction pipeline section, and secondary impeller is located the junction of intermediate junction pipeline section and spiral case. The problem of current multistage centrifugal pump experimental apparatus observation area is limited is solved.
Description
Technical Field
The utility model belongs to the technical field of fluid machinery equipment, a visual experimental apparatus of multistage centrifugal pump is related to.
Background
The multistage centrifugal pump is widely applied to industry, agriculture and other industries due to the advantages of high lift, small size and the like, and in pump products, the efficiency of the pump is a very important performance parameter and a key index for measuring the energy-saving and emission-reducing capacity of the pump, so that how to improve the efficiency of the multistage centrifugal pump and improve the technical advantages of energy saving and emission reduction becomes an important subject faced by broad researchers and designers.
At present, most of experimental devices of the multistage centrifugal pump used at home and abroad are closed experimental systems, and the observation of the flow phenomenon of the internal flow field of the multistage centrifugal pump is limited and has blind areas; therefore, a multi-stage centrifugal pump visualization experimental device needs to be designed.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a visual experimental apparatus of multistage centrifugal pump has solved the limited problem in current multistage centrifugal pump experimental apparatus observation region.
The utility model discloses the technical scheme who adopts is, the visual experimental apparatus of multistage centrifugal pump, including the transparent glass who connects gradually form the section of intaking, transparent glass form intermediate junction pipeline section and transparent glass form spiral case, the one end of pump shaft passes the spiral case in proper order, the intermediate junction pipeline section reachs the intake pipe section in, and is equipped with first impeller and secondary impeller on the pump shaft respectively, and first impeller is located the junction of the section of intaking and intermediate junction pipeline section, and secondary impeller is located the junction of intermediate junction pipeline section and spiral case, is equipped with radial stator on the first impeller.
The utility model discloses a characteristics still lie in:
the water inlet end of the water inlet pipe section is connected with an inlet flange.
And a locking nut is arranged at the end part of one end of the pump shaft, which enters the water inlet pipe section.
The pump shafts are connected with the primary impeller and the secondary impeller through pump shaft keys.
The pump shaft is provided with a shaft sleeve which is positioned at the position of the middle connecting pipe section.
The radial guide vanes include a positive guide vane and a negative guide vane.
The beneficial effects of the utility model are that, compare with prior art, the utility model discloses a multistage centrifugal pump with two-stage impeller is to the experimental apparatus of the radial stator optimal design of multistage centrifugal pump and chronogenesis effect research design, has utilized the characteristics that organic glass material surface is smooth, the light transmissivity is good. The multistage centrifugal pump experimental device is designed to feed water from the right side through reasonable arrangement, sequentially passes through the primary impeller, the radial guide vane and the secondary impeller, and is finally sucked out through the volute, wherein the middle connecting pipe section between the radial guide vane and the secondary impeller meets the observability of the internal flow field of the secondary impeller, so that a complete flow image of the water in the whole secondary impeller can be shot by using a high-speed camera in the direction of the front cover plate of the secondary impeller. The utility model discloses simple structure, simple to operate, application scope are wide, easy operation, and it provides the platform to the inside flow field phenomenon observation experiment of multistage centrifugal pump, have very strong practical value.
Drawings
FIG. 1 is a schematic structural diagram of a visual experimental device of a multistage centrifugal pump of the present invention;
FIG. 2 is a schematic structural diagram of a pump shaft in the multi-stage centrifugal pump visualization experiment device of the present invention;
fig. 3 is a schematic structural diagram of a first-stage impeller in the visualization experimental apparatus of the multistage centrifugal pump of the present invention;
fig. 4 is a schematic view of the installation states of a front guide vane and a back guide vane in the visualization experiment device of the multistage centrifugal pump of the utility model;
FIG. 5 is a schematic structural view of a positive guide vane in the multi-stage centrifugal pump visualization experiment apparatus of the present invention;
fig. 6 is a schematic structural diagram of a return guide vane in the visualization experiment device of the multistage centrifugal pump of the utility model.
In the figure, 1, an inlet flange, 2, an inlet pressure measuring hole, 3, an inlet connecting pipe, 4, a locking nut, 5, a first-stage impeller, 6, a front guide vane, 7, an annular cavity, 8, a back guide vane, 9, a water inlet pipe section, 10, a screw, 11, O-shaped sealing rings I and 12, a guide bearing, 13, an intermediate connecting pipe section, 14, a volute, 15, a rotating wheel positioning connecting shaft sleeve, 16, a secondary impeller, 17, a long bolt, 18, O-shaped sealing rings II and 19, a pump shaft key, 20, a mechanical seal and 21, a pump shaft.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings and specific embodiments.
The visual experimental device of the multistage centrifugal pump of the utility model, as shown in fig. 1 and 2, comprises a water inlet pipe section 9, a middle connecting pipe section 13 and a volute casing 14;
the water inlet pipe section 9 is arranged between the inlet flange 1 and the first-stage impeller 5, and the middle connecting pipe section 13 is arranged between the positive guide vane 6 and the right half part of the volute 14.
The water inlet equipment is connected with the inlet connecting pipe 3 through the inlet flange 1, the water inlet pipe section 9 is connected with the middle connecting pipe section 13 through the screw 10, and the middle connecting pipe section 13 is fixedly connected with the left half part of the volute 14 through the long bolt 17.
The right end of the pump shaft 21 is provided with a locking nut 4 for ensuring that the primary impeller 5 does not displace, a pump shaft key 19 is arranged on the pump shaft 21 for positioning the primary impeller 5 and the secondary impeller 16 on the shaft, a guide bearing 12 is arranged at the rear cover plate of the primary impeller 5 for driving the primary impeller 5 to rotate, and a shaft sleeve 15 is arranged on the pump shaft at the middle connecting pipe section 13 for positioning and connecting a rotating wheel. The primary impeller 5, the secondary impeller 16, the positive guide vane 6 and the negative guide vane 8 are integrally sealed in a relatively closed environment, so that the influence of the external environment and other connection forms on the operation performance and safety of the impeller is avoided.
O-shaped ring seals I11 and II18 are respectively adopted between the water inlet pipe section 9 and the middle connecting pipe section 13 and between the middle connecting pipe section 13 and the left half part of the volute casing 14, and a mechanical seal 20 is adopted between the volute casing 14 and the pump shaft 21, so that leakage loss is reduced.
The inlet connecting pipe 3 is provided with 4 inlet pressure measuring holes 2 which are radially and uniformly distributed at a position 80mm away from the inlet so as to detect and control the flowing pressure of the inlet water.
The starting point is that the pressure measuring hole 2 is arranged at every 90 degrees by taking the volute 14 as a front view and is vertical to the pump shaft 21, and the pressure measuring hole 2 is arranged at the position of the partition tongue of the volute 14 and used for water pressure measurement.
The shell of the water inlet pipe section 9, the shell of the intermediate connecting pipe section 13 and the volute 14 are integrally processed by organic glass, so that the flowing phenomenon in the whole structure can be shot with higher definition.
As shown in fig. 3, the first-stage impeller 5 is a closed impeller, in order to ensure the smooth surface of the front cover plate of the impeller, the light of the light source penetrates through the front cover plate, the high-speed camera is used for shooting the complete flow image in the impeller, the impeller blades and the rear cover plate are processed into a whole by stainless steel, the front cover plate is processed by organic glass independently, and then the two are connected together to form the complete impeller.
The structure of the secondary impeller 16 is the same as that of the primary impeller 5.
As shown in fig. 4, the radial guide vane is composed of a front guide vane 6 and a back guide vane 8.
As shown in fig. 5 and 6, the positive guide vane 6 and the negative guide vane 8 of the radial guide vane are made of stainless steel, and the number of the vanes is 7.
The utility model discloses visual experimental apparatus of multistage centrifugal pump's theory of operation does: the motor drives the pump shaft 21 to start to operate, the water inlet device is connected with the inlet connecting pipe 3 through the inlet flange 1 to achieve the purpose of water inlet, water flows into the primary impeller 5 stably through the inlet connecting pipe 3, then under the high-speed rotation effect of the primary impeller 5, water flow is collected by the positive guide vane 6 and conveyed into the annular cavity 7 to achieve the effect of reducing speed and increasing pressure energy, liquid is uniformly guided to the secondary impeller 16 through the middle connecting pipe section 13 through the reverse guide vane 8 with minimum loss, under the high-speed rotation effect of the secondary impeller 16, the water flow radially flows into the volute 14, and finally uniformly flows out under the effect of effectively reducing the flow speed of the volute 14.
In the visual experimental device of the multistage centrifugal pump, the inlet flange section, the inlet connecting pipe and the pump body shell at the first-stage impeller are designed into a whole, which is called as a water inlet pipe section; the pump body shell, the middle connecting water pipe and the right half part of the volute at the radial guide vane are designed into a whole, and the whole is called as a middle connecting pipe section. The part processing procedures are simplified, and the assembly work in the later period is facilitated.
The utility model provides a visual experimental apparatus of multistage centrifugal pump observes the flow process of water in hydraulic component through the experiment, and the pressure measurement station of arranging can detect out under the different working conditions that flow, the flow pressure distribution condition of water in the runner, provides the reference for the optimal design of multistage centrifugal pump, the operation of arranging.
The utility model provides an intermediate connection pipeline section sets up among the visual experimental apparatus of multistage centrifugal pump, on the one hand, has both guaranteed that the flow between the two-stage links up, can study interstage flow phenomenon and flow characteristic again. On the other hand, this section is organic glass material, and the characteristics of light transmissivity make the observation to the inside water flow process of secondary impeller can realize. The utility model discloses the fluid flow process is observed to the pump to the convenience, provides the experimental data support to the optimal design research of radial stator simultaneously.
Claims (6)
1. Visual experimental apparatus of multistage centrifugal pump, its characterized in that: the centrifugal pump comprises a transparent glass-shaped water inlet pipe section (9), a transparent glass-shaped middle connecting pipe section (13) and a transparent glass-shaped volute (14), wherein the transparent glass-shaped water inlet pipe section (9), the transparent glass-shaped middle connecting pipe section (13) and the transparent glass-shaped volute (14) are sequentially connected, one end of a pump shaft (21) sequentially penetrates through the volute (14) and the middle connecting pipe section (13) to reach the water inlet pipe section (9), a first-stage impeller (5) and a second-stage impeller (16) are respectively arranged on the pump shaft (21), the first-stage impeller (5) is located at the joint of the water inlet pipe section (9) and the middle connecting pipe section (13), the second-stage impeller (16) is located at the joint of the middle connecting pipe section (13) and the volute (14), and radial guide vanes are arranged on the first-stage impeller (5).
2. The multistage centrifugal pump visualization experiment device of claim 1, wherein: the water inlet end of the water inlet pipe section (9) is connected with an inlet flange (1).
3. The multistage centrifugal pump visualization experiment device of claim 1, wherein: and a locking nut (4) is arranged at the end part of one end of the pump shaft (21) entering the water inlet pipe section (9).
4. The multistage centrifugal pump visualization experiment device of claim 1, wherein: the pump shafts (21) are connected with the primary impeller (5) and the secondary impeller (16) through pump shaft keys (19).
5. The multistage centrifugal pump visualization experiment apparatus of claim 1, wherein: the pump shaft (21) is provided with a shaft sleeve (15), and the shaft sleeve (15) is located at the position of the middle connecting pipe section (13).
6. The multistage centrifugal pump visualization experiment apparatus of claim 1, wherein: the radial guide vane comprises a positive guide vane (6) and a negative guide vane (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222211725.8U CN217813975U (en) | 2022-08-22 | 2022-08-22 | Visual experimental apparatus of multistage centrifugal pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222211725.8U CN217813975U (en) | 2022-08-22 | 2022-08-22 | Visual experimental apparatus of multistage centrifugal pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217813975U true CN217813975U (en) | 2022-11-15 |
Family
ID=83976714
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222211725.8U Active CN217813975U (en) | 2022-08-22 | 2022-08-22 | Visual experimental apparatus of multistage centrifugal pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217813975U (en) |
-
2022
- 2022-08-22 CN CN202222211725.8U patent/CN217813975U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108678959B (en) | Single-shaft driven three-stage counter-rotating axial flow pump | |
| CN201916218U (en) | Gear type air compressor for PTA (pure terephthalic acid) device | |
| CN104564717B (en) | Direct driven high-speed turbine vacuum pump and operation method thereof | |
| CN217813975U (en) | Visual experimental apparatus of multistage centrifugal pump | |
| CN204025142U (en) | A kind of impeller is biased the torque flow pump of band lordosis impeller | |
| CN215566829U (en) | Stepped spiral groove annular dynamic sealing structure of water outlet section of self-balancing multi-stage pump | |
| CN215672846U (en) | Reverse suction section pressure relief sealing structure of self-balancing multistage centrifugal pump | |
| CN216975258U (en) | Vertical double-suction pump | |
| CN204457888U (en) | A kind of high-efficiency operation turbosupercharger | |
| CN108825506A (en) | It is not easy to be washed in the level of abrasion and opens horizontal double sucking pump | |
| CN201266023Y (en) | Cooling column of hydraulic turbine driving fan | |
| CN209875479U (en) | Coaxial symmetrically-arranged multistage hydraulic turbine direct-drive pump | |
| CN204738966U (en) | Centrifugal pump | |
| CN210317799U (en) | Energy-saving water pump | |
| CN106545363A (en) | A kind of miniature blade-free turbine | |
| CN215486611U (en) | Horizontal split axial split first-stage double-suction seven-stage centrifugal pump | |
| CN207049074U (en) | A kind of Combined guide impeller structure | |
| CN203146350U (en) | Low-lift vertical planetary gear reducing axial flow pump | |
| CN111623100A (en) | Single-cavity speed-regulating type hydraulic coupler | |
| CN219452414U (en) | Coaxial multistage cylinder bag hydraulic flat direct-drive pump | |
| CN218325450U (en) | Low-specific-speed single-stage double-suction centrifugal pump with long and short blade composite impeller | |
| CN209976689U (en) | Energy-saving water circulation system | |
| CN218669830U (en) | Novel high-capacity efficient rubber ball pump | |
| CN215566718U (en) | Self-balancing multistage pump throttling bush and throttling bush fit clearance on-line monitoring device | |
| CN205557057U (en) | Dyeing machine driving system with from pressure boost function |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |