CN209875479U - Coaxial symmetrically-arranged multistage hydraulic turbine direct-drive pump - Google Patents

Abstract

The utility model provides a coaxial-type symmetrical arrangement multistage hydraulic turbine directly drives pump, include: the turbine engine comprises a shell and a shaft arranged in the shell, wherein a pump inlet section, a pump middle section, a turbine middle section and a turbine inlet section are arranged on the shell from one end to the other end, a pump outlet is arranged on one side, close to the pump inlet section, of the middle section, a turbine outlet is arranged on one side, close to the turbine inlet section, of the middle section, a pump impeller and a turbine impeller are arranged on the shaft, the pump impeller is located in an inner cavity of the pump middle section, the turbine impeller is located in an inner cavity of the turbine middle section, and the turbine and a high-pressure pump are coaxially designed.

Description

Coaxial symmetrically-arranged multistage hydraulic turbine direct-drive pump

Technical Field

The utility model relates to a multistage high pressure hydraulic turbine equips the field, particularly, especially relates to a pump is directly driven to multistage hydraulic turbine of coaxial-type symmetrical arrangement.

Background

The hydraulic turbine is mechanical equipment which converts pressure energy in a liquid fluid working medium into mechanical energy, and the hydraulic turbine can be used for recycling liquid excess pressure in the process flow and converting the liquid excess pressure into the mechanical energy to drive the mechanical equipment or generate electricity so as to achieve the purpose of energy conservation. With the gradual development of energy-saving and emission-reducing technology, the main technical development direction is to realize energy conservation, energy consumption reduction, reasonable energy utilization and energy reutilization.

The conventional hydraulic recovery turbine at home and abroad is configured by adding a direct connection structure of a motor and a clutch between a pump and the hydraulic recovery turbine, and has the disadvantages of complex structure and high difficulty in equipment installation, debugging and maintenance.

Disclosure of Invention

According to the technical problems that the traditional hydraulic recovery turbine is complex in structure and high in equipment installation, debugging and maintenance difficulty, the coaxial symmetrical arrangement multistage hydraulic turbine direct-drive pump is provided. The utility model discloses mainly utilize the coaxial-type design to reduce auxiliary assembly's configuration to practice thrift project cost, improve product maintainability and reliability, make on-the-spot installation, dismantle, maintain more convenient.

The utility model discloses a technical means as follows:

a coaxial symmetrical arrangement multistage hydraulic turbine direct drive pump comprises: the turbine pump comprises a shell and a shaft arranged in the shell, wherein a pump inlet section, a pump middle section, a turbine middle section and a turbine inlet section are arranged on the shell from one end to the other end, a pump outlet is arranged on one side, close to the pump inlet section, of the middle section, and a turbine outlet is arranged on one side, close to the turbine inlet section, of the middle section;

the shaft is provided with a pump impeller and a turbine impeller, the pump impeller is located in the pump middle section inner cavity, and the turbine impeller is located in the turbine middle section inner cavity.

Further, the pump impeller and the turbine impeller are symmetrically arranged and installed on two sides of the middle section.

Furthermore, pump impeller and turbine wheel are equipped with a plurality ofly respectively, just pump impeller and turbine wheel pass through the snap ring and are connected with the axle location step by step.

Furthermore, the pump inlet section, the pump middle section, the turbine middle section and the turbine inlet section are connected in series by a fixed shaft, and the end part of the fixed shaft is locked and fixed by a high-strength nut.

Furthermore, static sealing elements are adopted among the pump inlet section, the pump middle section, the turbine middle section and the turbine inlet section for sealing.

Further, the inner chamber of interlude is equipped with middle bearing part, middle bearing part includes middle bearing bush and middle bearing axle sleeve, middle bearing bush install in on the inner wall of interlude, middle bearing axle sleeve is installed on the outer wall of axle, and under the rotating condition of axle, middle bearing bush and middle bearing axle sleeve use in combination.

Further, the inner chamber of turbine inlet section is equipped with balancing unit, balancing unit includes balanced bush and balanced axle sleeve, balanced bush is installed on the inner wall of turbine inlet section, balanced axle sleeve installs on the outer wall of axle, and under the rotatory state of axle, balanced bush and balanced axle sleeve use in combination.

Further, a sealing box body is arranged at the end part of the turbine inlet section, and sealing parts are respectively arranged at the end parts of the pump inlet section and the sealing box body.

Further, the pump inlet section outside is equipped with and is used for supporting the pump end bearing part of axle, the turbine inlet section outside is equipped with and is used for supporting the turbine end bearing part of axle, just pump end bearing part includes radial bearing, turbine end bearing part includes radial bearing and thrust bearing.

Compared with the prior art, coaxial-type symmetrical arrangement multistage hydraulic turbine directly drives the pump, has following advantage:

1. the axial pump impeller and the turbine impeller are arranged on the shaft, and the turbine and the high-pressure pump are coaxially designed, so that the number of unit power equipment is reduced, the reliability is increased, the investment cost is reduced, the equipment structure is simplified, the defects of complexity and high debugging and maintenance difficulty of multi-equipment combination in the form of a turbine plus clutch plus motor plus high-pressure pump are overcome, and the problem of multi-equipment rotor centering is solved.

2. The pump impeller and the turbine impeller are symmetrically arranged and mounted on two sides of the middle section, the turbine impeller and the high-pressure pump impeller are symmetrically arranged, axial force is automatically balanced, rotor load is reduced, and the problem of axial force balance of the multi-stage pump is solved.

3. The pump impeller and the turbine impeller are respectively provided with a plurality of parts, the pump impeller and the turbine impeller are connected with the shaft in a step-by-step positioning mode through the clamping rings, the turbine impeller and the high-pressure pump impeller are of a step-by-step positioning structure through the clamping rings, stress generated on the shaft is reduced, and the risk of shaft bending or fatigue shaft breakage is eliminated.

4. The inner cavity of interlude is equipped with middle bearing unit, and middle bearing unit is used for further supporting the rotor, increases rotor support rigidity, realizes the effect of turbine and pump sending medium mutual isolation simultaneously.

5. The directions of the pump inlet section, the turbine inlet section, the pump outlet and the turbine outlet which are placed into the inlet and the outlet can be changed according to the requirements of a user on site, the pipeline arrangement difficulty is reduced, the occupied space is small, and the installation is flexible.

6. The soft start is realized, the pump outlet and the turbine outlet valve are opened when the unit is started, and the turbine inlet valve is slowly opened, so that the turbine and the pump can gradually reach the working rotating speed from the shutdown state, the starting torque of the pump set is small, and the instant load of the starting of the pump set is reduced.

Coaxial-type symmetrical arrangement multistage hydraulic turbine directly drives pump, adopt subtraction design, have on-the-spot installation, maintain, dismantle characteristics such as convenient, the operation is stable, long service life, be applicable to remaining liquid energy recovery's hydraulic recovery turbine equipment in trade process flows such as petrochemical hydrocracking unit, large-scale synthetic ammonia device, coal system alkene device, sea water desalination device.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments or the prior art are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive labor.

Fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is a schematic structural view of the intermediate bearing device of the present invention.

Fig. 3 is a schematic view of the positioning of the impeller of the present invention.

Fig. 4 is a schematic view of the balancing device of the present invention.

Fig. 5 is a schematic view of the flow implementation of the present invention.

In the figure: 1. pump end bearing part, 2, pump inlet section, 3, fixed shaft, 4, pump middle section, 5, guide vane, 6, interstage shaft sleeve, 7, pump impeller, 8, sealing ring, 9, middle section, 10, middle bearing bush, 11, middle bearing shaft sleeve, 12, snap ring, 13, turbine impeller, 14, shaft, 15, turbine inlet section, 16, high-strength nut, 17, balance bush, 18, balance shaft sleeve, 19, seal box, 20, seal part, 21, turbine end bearing part.

Detailed Description

It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments in accordance with the invention. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

Unless specifically stated otherwise, the relative arrangement of the components and steps, the numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present invention. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the orientation words such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom", etc. are usually based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and in the case of not making a contrary explanation, these orientation words do not indicate and imply that the device or element in question must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the scope of the present invention: the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.

Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and if not stated otherwise, the terms have no special meaning, and therefore, the scope of the present invention should not be construed as being limited.

As shown in fig. 1 to 5, the utility model provides a coaxial-type symmetrical arrangement multistage hydraulic turbine direct drive pump, include: the casing with locate the inside axle 14 of casing, be pump intake section 2, pump middle section 4, interlude 9, turbine middle section and turbine intake section 15 respectively from one end to the other end on the casing, just be close to pump intake section 2 one side on the interlude 9 and be equipped with the pump export, be close to turbine intake section 15 one side on the interlude 9 and be equipped with the turbine export, the interlude 9 has integrateed the turbine export and has pumped the export, and simple structure is reliable, has effectively reduced the complete machine size, and the import and export direction can change according to the requirement at user's scene, has reduced the pipeline and has arranged the degree of difficulty, and occupation of land space is few, the installation is nimb. And a pump impeller 7 and a turbine impeller 13 are arranged on the shaft 14, the pump impeller 7 is positioned in the inner cavity of the pump middle section 4, and the turbine impeller 13 is positioned in the inner cavity of the turbine middle section.

The utility model discloses an in the embodiment, pump impeller 7 and turbine impeller 13 adopt symmetrical arrangement install in 9 both sides of interlude, pump impeller 7 and turbine impeller 13 are equipped with a plurality ofly respectively, just pump impeller 7 and turbine impeller 13 pass through snap ring 12 and axle 14 location connection step by step, and pump impeller 7, turbine impeller 13 install jointly on a root shaft, and the impeller adopts transition fit with the axle, and the impeller adopts snap ring location structure step by step, reduces the stress that produces on the axle, eliminates the crooked or tired risk of disconnected axle of axle, as shown in fig. 3, the impeller progression of pump and turbine can carry out the ratio according to the operating mode and select.

The utility model discloses an in the embodiment, be equipped with interstage axle sleeve 6 between two adjacent pump impeller 7, pump impeller 7's wheel hub with be equipped with sealing ring 8 between 4 inner walls in pump middle section, with the reason, be equipped with interstage axle sleeve between two adjacent turbine impeller 13 wheel hub with be equipped with the sealing ring between the inner wall in turbine middle section.

In the embodiment of the utility model, the pump inlet section 2, the pump middle section 4, the middle section 9, the turbine middle section and the turbine inlet section 15 are connected in series by the fixed shaft 3, and the end of the fixed shaft 3 is locked and fixed by the high-strength nut 16, the static sealing element is adopted between the pump inlet section 2, the pump middle section 4, the middle section 9, the turbine middle section and the turbine inlet section 15, preferably, the pump middle section 4 and the turbine middle section are in a combined structure, the pump middle section 4 is formed by combining a three-section middle section structure, and the turbine middle section is formed by combining a two-section middle section structure, the whole device of the utility model is formed by splicing and locking the fixed shaft 3 and the high-strength nut 16 for multiple components, the inlet and outlet directions of the pump inlet section 2, the turbine inlet section 15, the pump outlet and the turbine outlet can be changed according to the requirements of the user site, the installation is flexible. Of course, in other embodiments of the present invention, the middle sections of the pump middle section 4 and the turbine middle section may be formed in other numbers, which are designed to match the installation requirements of the pump impeller 7 and the turbine impeller 13.

The utility model discloses an in the embodiment, as shown in FIG. 2, the inner chamber of interlude 9 is equipped with middle bearing part, middle bearing part includes middle bearing bush 10 and middle bearing axle sleeve 11, middle bearing bush 10 install in on the inner wall of interlude 9, middle bearing axle sleeve 11 is installed on the outer wall of axle 14, and under the rotating condition of axle 14, middle bearing bush 10 and middle bearing axle sleeve 11 use in combination, middle bearing part is used for further supporting the rotor, increases rotor support rigidity, realizes the effect of turbine and pump sending medium mutual isolation simultaneously.

The utility model discloses an in the embodiment, as shown in FIG. 4, the inner chamber of turbine inducer 15 is equipped with balancing unit, balancing unit includes balanced bush 17 and balanced axle sleeve 18, balanced bush 17 is installed on the inner wall of turbine inducer 15, balanced axle sleeve 18 is installed on the outer wall of axle 14, and under the rotating condition of axle 14, balanced bush 17 and balanced axle sleeve 18's clearance forms dynamic pressure field, makes balanced axle sleeve 18 both sides form pressure differential, and the axial force that pressure differential produced is opposite with remaining impeller axial force, offsets each other, reduces the epaxial load that bears.

In the embodiment of the present invention, the end of the turbine inlet section 15 is provided with a seal box 19, and the ends of the pump inlet section 2 and the seal box 19 are respectively provided with a seal part 20. The pump inlet section 2 outside is equipped with and is used for supporting the pump end bearing part 1 of axle 14, the turbine inlet section 15 outside is equipped with and is used for supporting the turbine end bearing part 21 of axle 14, just pump end bearing part 1 includes radial bearing, turbine end bearing part 21 includes radial bearing and thrust bearing, turbine end bearing part 21 and pump end bearing part 1 are installed respectively in the axle both sides.

As shown in fig. 1 to 5, a method for using the coaxial symmetrical multistage hydraulic turbine direct drive pump comprises the following steps: fluid enters from a turbine inlet section 15 and flows out from a turbine outlet of the middle section 9 through the turbine middle section, the turbine converts pressure energy of the fluid into mechanical energy for maintaining rotation of the rotor, a turbine impeller 13 is driven to rotate and further drives a shaft 14 to rotate, at the moment, a pump impeller rotates under the drive of the shaft 14, a pump end impeller converts the mechanical energy into pressure energy of the fluid, the fluid is sucked from a pump inlet section 2, and the fluid is output from a pump outlet of the middle section 9 through the pump middle section.

Coaxial-type symmetrical arrangement multistage hydraulic turbine directly drives pump and application method thereof, adopt turbine unit and pump unit integrated design, the impeller includes symmetrical arrangement's multistage turbine impeller and multistage pump impeller, and the interlude is located between two kinds of impellers, is provided with jackshaft bearing device on the interlude, increases rotor support rigidity, realizes the effect of turbine and pump sending medium mutual isolation simultaneously, the utility model has the characteristics of stable high efficiency, compact structure, low in cost, dependable performance, easy operation, installation easy maintenance, long service life etc. relate to the multistage high pressure turbine field of coaxial-type, be one kind coaxial-type symmetrical arrangement multistage hydraulic turbine directly drives pump unit.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.

Claims (9)

1. The utility model provides a multistage hydraulic turbine direct drive pump of coaxial-type symmetrical arrangement which characterized in that includes: the turbine pump comprises a shell and a shaft arranged in the shell, wherein a pump inlet section, a pump middle section, a turbine middle section and a turbine inlet section are arranged on the shell from one end to the other end, a pump outlet is arranged on one side, close to the pump inlet section, of the middle section, and a turbine outlet is arranged on one side, close to the turbine inlet section, of the middle section;

the shaft is provided with a pump impeller and a turbine impeller, the pump impeller is located in the pump middle section inner cavity, and the turbine impeller is located in the turbine middle section inner cavity.

2. The coaxial symmetrical arrangement multistage hydraulic turbine direct drive pump as claimed in claim 1, wherein the pump impeller and the turbine impeller are mounted on both sides of the middle section in a symmetrical arrangement.

3. The coaxial symmetrical multi-stage hydraulic turbine direct drive pump as claimed in claim 1, wherein a plurality of pump impellers and turbine impellers are respectively provided, and the pump impellers and the turbine impellers are connected with the shaft in a step-by-step positioning manner through snap rings.

4. The coaxial symmetrical arrangement multistage hydraulic turbine direct drive pump as claimed in claim 1, wherein the pump inlet section, the pump middle section, the turbine middle section and the turbine inlet section are connected in series by a fixed shaft, and the end of the fixed shaft is locked and fixed by a high-strength nut.

5. The coaxial symmetrical arrangement multistage hydraulic turbine direct drive pump according to claim 4, characterized in that the pump inlet section, the pump middle section, the turbine middle section and the turbine inlet section are sealed by static seals.

6. The coaxial symmetrical multistage hydraulic turbine direct drive pump as claimed in claim 1, wherein an inner cavity of the middle section is provided with an intermediate bearing component, the intermediate bearing component comprises an intermediate bearing bush and an intermediate bearing shaft sleeve, the intermediate bearing bush is mounted on an inner wall of the middle section, the intermediate bearing shaft sleeve is mounted on an outer wall of the shaft, and the intermediate bearing bush and the intermediate bearing shaft sleeve are used in combination in a rotating state of the shaft.

7. The coaxial symmetrical arrangement multistage hydraulic turbine direct drive pump according to claim 1, characterized in that the inner cavity of the turbine inlet section is provided with a balancing device, the balancing device comprises a balancing bushing and a balancing sleeve, the balancing bushing is mounted on the inner wall of the turbine inlet section, the balancing sleeve is mounted on the outer wall of the shaft, and in the rotating state of the shaft, the balancing bushing and the balancing sleeve are used in combination.

8. The coaxial symmetrical arrangement multistage hydraulic turbine direct drive pump as claimed in claim 7, wherein a sealed box is provided at the end of the turbine inlet section, and sealing parts are respectively provided at the ends of the pump inlet section and the sealed box.

9. The coaxial symmetrical arrangement multistage hydraulic turbine direct drive pump as claimed in claim 1, wherein a pump end bearing part for supporting the shaft is arranged outside the pump inlet section, a turbine end bearing part for supporting the shaft is arranged outside the turbine inlet section, the pump end bearing part comprises a radial bearing, and the turbine end bearing part comprises a radial bearing and a thrust bearing.