CN219452414U

CN219452414U - Coaxial multistage cylinder bag hydraulic flat direct-drive pump

Info

Publication number: CN219452414U
Application number: CN202320625615.8U
Authority: CN
Inventors: 冯岩; 杨忠平; 侯敏竹; 周钧波; 胡钟玲
Original assignee: DALIAN DEEP BLUE PUMP CO LTD
Current assignee: DALIAN DEEP BLUE PUMP CO LTD
Priority date: 2023-03-27
Filing date: 2023-03-27
Publication date: 2023-08-01
Anticipated expiration: 2033-03-27

Abstract

The utility model provides a coaxial multistage cylinder bag hydraulic flat direct-drive pump, which comprises a shared cylinder body and a core bag with an integral core-pulling structure, wherein the shared cylinder body comprises a pump cavity, a middle cavity and a turbine cavity, the pump cavity is provided with a pump inlet and a pump outlet, and the turbine cavity is provided with a turbine inlet and a turbine outlet; the core bag can be integrally installed in or extracted from the common cylinder body and comprises a pump middle section, a transition section, a turbine middle section, a turbine discharge section, a pump impeller and a turbine impeller, wherein the common shaft is arranged on the common shaft. Fluid enters the middle section of the turbine through the turbine inlet and flows out from the turbine outlet at the turbine discharge section to drive the turbine impeller to rotate so as to drive the common shaft to rotate, and at the moment, the pump impeller rotates under the drive of the common shaft to suck the fluid from the pump inlet and output the fluid from the pump outlet through the middle section of the pump. The core package is integrally replaced, so that the production can be recovered within 4 hours, and the fault loss is greatly reduced.

Description

Coaxial multistage cylinder bag hydraulic flat direct-drive pump

Technical Field

The utility model relates to the technical field of multistage high-pressure hydraulic turbine equipment, in particular to a coaxial multistage cylinder bag hydraulic flat direct-drive pump.

Background

The hydraulic turbine is mechanical equipment for converting pressure energy in liquid fluid working medium into mechanical energy, and the hydraulic turbine can be used for recycling liquid residual pressure in the process flow and converting the liquid residual pressure into mechanical energy to drive the mechanical equipment or generate power so as to achieve the aim of saving energy. Along with the gradual development of energy conservation and emission reduction technologies, the main technical development direction is to realize energy conservation, reduce energy consumption, reasonably utilize energy and recycle energy. The conventional hydraulic recovery turbines at home and abroad are configured by adding a motor and clutch direct connection structure between the pump and the hydraulic recovery turbines, and have complex structure and high equipment installation, debugging and maintenance difficulties.

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 multistage cylinder bag hydraulic flat direct-drive pump is provided. The utility model mainly utilizes the coaxial design to reduce the configuration of auxiliary equipment, thereby saving project cost, improving maintainability and reliability of products, simultaneously adopting the integral core-pulling structure to facilitate on-site installation, disassembly and maintenance, adopting an integral shared cylinder body, reducing auxiliary equipment such as a sealing device and the like.

The utility model adopts the following technical means:

a coaxial multistage cylinder bag hydraulic flat direct-drive pump comprises a common cylinder body and a core bag with an integral core-pulling structure;

the common cylinder body comprises a middle cavity positioned in the middle part, and a pump cavity and a turbine cavity which are positioned at two sides of the middle section, wherein a pump inlet and a pump outlet are respectively formed at two sides of the pump cavity, and a turbine inlet and a turbine outlet are respectively formed at two sides of the turbine cavity;

the core pack can be integrally installed in or extracted from the shared cylinder, the core pack comprises a shared shaft arranged in the shared cylinder, and the shared shaft is provided with a pump middle section, a transition section, a turbine middle section and a turbine discharge section; the middle section of the pump is positioned in the pump cavity, the middle section of the turbine and the turbine discharge section are arranged in the turbine cavity, and the turbine discharge section is positioned at the position opposite to the turbine outlet; the transition section is positioned in the middle cavity and isolates media in the pump cavity and the turbine cavity from each other;

the inner cavity of the middle section of the pump is provided with a pump impeller arranged on the common shaft, and the inner cavities of the middle section of the turbine and the turbine discharge section are provided with turbine impellers arranged on the common shaft. The turbine wheel and pump wheel are arranged in opposite directions (not necessarily completely symmetrical).

Further, the pump impeller and the turbine impeller are respectively provided with a plurality of pump impellers, and the pump impeller and the turbine impeller are in step-by-step positioning connection with the shared shaft through the clamping rings.

Further, a positioning sleeve is arranged between two adjacent pump impellers and between two adjacent turbine impellers.

Further, the core pack further comprises an intermediate bearing assembly arranged at the inner cavity of the transition section, the intermediate bearing assembly comprises an intermediate bearing bush and an intermediate bearing sleeve, the intermediate bearing bush is mounted on the inner wall of the transition section, the intermediate bearing sleeve is mounted on the outer wall of the common shaft, and in the rotating state of the common shaft, the intermediate bearing bush and the intermediate bearing sleeve are combined.

Further, the pump outlet is proximate to the intermediate chamber and the pump inlet is distal to the intermediate chamber;

the core bag further comprises a pump suction box body and a pump cover, wherein the pump suction box body and the pump cover are installed on the common shaft and are rotationally connected with the common shaft, the pump suction box body is located at the position where the pump inlet is located, the pump suction box body and the end part of the common cylinder are fixedly connected through bolts, one end of the common cylinder is sealed, the pump cover and the end part of the common cylinder are fixedly connected through bolts, the other end of the common cylinder is sealed, and the core bag can be integrally pulled out or put in after the bolts are detached.

Further, the core pack further includes a pump end bearing part and a turbine end bearing part mounted on the common shaft, both ends of the common shaft respectively penetrate through the pump suction box body and the pump cover, and the pump end bearing part and the turbine end bearing part are respectively mounted at both ends of the common shaft.

Further, the core pack further comprises two sealing parts, the two sealing parts are respectively arranged at the position that the common shaft penetrates out of the pump suction box body and the pump cover, the outer part is respectively fixedly connected with the pump suction box body and the pump cover, and the inner part is rotationally connected with the common shaft.

Further, the core pack also includes pump guide vanes that cooperate with the pump impeller and the turbine impeller.

Compared with the prior art, the utility model has the following advantages:

1. the pump impeller and the turbine impeller are arranged on the common shaft, and the turbine and the high-pressure pump are coaxially designed, so that the number of mechanical equipment is reduced, the reliability is increased, the input cost is reduced, the equipment structure is simplified, the defects of complex combination of multiple equipment in the form of 'turbine' + 'clutch' + 'motor' + 'high-pressure pump' and high debugging and maintenance difficulties are overcome, and meanwhile, the problem of centering of multiple equipment rotors is solved.

2. The inner cavity of the middle section is provided with a transition section, the inner cavity of the transition section is provided with a middle bearing component, the middle bearing device is used for further supporting the shared shaft, the supporting rigidity of the shared shaft is increased, and the function of mutually isolating the turbine and the pumped medium is realized.

3. The core package is integrally replaced, so that the production can be recovered within 4 hours, and the fault loss is greatly reduced.

4. The directions of the inlet and the outlet of the pump, the turbine inlet, the pump outlet and the turbine outlet can be changed according to the requirements of the user on site, so that the difficulty of pipeline arrangement is reduced, the occupied space is small, and the installation is flexible.

5. The pump impeller and the turbine impeller adopt a clamping ring step-by-step positioning structure, so that the stress generated on the common shaft is reduced, and the risk of bending or fatigue breaking of the common shaft is eliminated. The number of stages of the pump impeller and the turbine impeller can be selected in proportion according to working conditions.

6. The number of mechanical seals and bearing parts is reduced by half, the pump end bearing part, the sealing part and the turbine end bearing part seal two ends, the middle is partitioned by adopting a transition section and the middle bearing part, the number of externally leaking points is reduced by half, and meanwhile, the manufacturing cost is reduced by about 20 percent.

Based on the reasons, the utility model can be widely popularized in the fields of turbine direct drive pumps and the like.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic structural view of a coaxial multistage tube bag hydraulic flat direct-drive pump in an embodiment of the utility model.

FIG. 2 is a schematic view of an intermediate bearing assembly according to an embodiment of the present utility model.

FIG. 3 is a schematic diagram of pump impeller positioning in an embodiment of the present utility model.

In the figure: 1. a pump end bearing member; 2. a sealing member; 3. a pump suction box; 4. a common shaft; 5. a pump impeller; 6. pump guide vanes; 7. a pump middle section; 8. a common cylinder; 9. a transition section; 10. an intermediate bearing bushing; 11. an intermediate bearing sleeve; 12. a clasp; 13. a positioning sleeve; 14. a turbine wheel 15, a turbine discharge section; 16. a pump cover; 17. turbine end bearing components.

Detailed Description

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

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are only some embodiments of the present utility model, not all embodiments. The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the utility model, its application, or uses. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

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 exemplary embodiments according to the present utility model. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.

The relative arrangement of the components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present utility model unless it is specifically stated otherwise. Meanwhile, it should be clear that the dimensions of the respective parts shown in the drawings are not drawn in actual scale for convenience of description. Techniques, methods, and apparatus known to one 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 specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures.

In the description of the present utility model, it should be understood that the azimuth or positional relationships indicated by the azimuth terms such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal", and "top, bottom", etc., are generally based on the azimuth or positional relationships shown in the drawings, merely to facilitate description of the present utility model and simplify the description, and these azimuth terms do not indicate and imply that the apparatus or elements referred to must have a specific azimuth or be constructed and operated in a specific azimuth, and thus should not be construed as limiting the scope of protection of the present utility model: the orientation word "inner and outer" refers to inner and outer relative to the contour of the respective component itself.

Spatially relative terms, such as "above … …," "above … …," "upper surface at … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial location relative 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 in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "above" or "over" other devices or structures would then be oriented "below" or "beneath" the other devices or structures. Thus, the exemplary term "above … …" may include both orientations of "above … …" and "below … …". The device may also be positioned in other different ways (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

In addition, the terms "first", "second", etc. are used to define the components, and are only for convenience of distinguishing the corresponding components, and the terms have no special meaning unless otherwise stated, and therefore should not be construed as limiting the scope of the present utility model.

As shown in fig. 1-3, a coaxial multistage tube bag hydraulic flat direct-drive pump comprises a shared tube 8 and a core bag with an integral core-pulling structure;

the shared cylinder 8 comprises a middle cavity positioned in the middle part, and a pump cavity and a turbine cavity which are positioned at two sides of the middle section, wherein a pump inlet and a pump outlet are respectively formed at two sides of the pump cavity, and a turbine inlet and a turbine outlet are respectively formed at two sides of the turbine cavity; the pump outlet is proximate to the intermediate chamber and the pump inlet is distal to the intermediate chamber;

the core pack can be integrally installed in or extracted from the common cylinder 8, the core pack 8 comprises a common shaft 4 arranged in the common cylinder 8, and a pump end bearing part 1, a sealing part 2, a pump suction box 3, a pump impeller 5, a pump guide vane 6, a pump middle section 7, a transition section 9, an intermediate bearing bush 10, an intermediate bearing sleeve 11, a clamping ring 12, a positioning sleeve 13, a turbine impeller 14, a turbine discharge section 15, a pump cover 16, a turbine end bearing part 17 and a turbine middle section which are arranged on the common shaft 4;

the pump middle section 7 is positioned in the pump cavity, the turbine middle section and the turbine discharge section 15 are arranged in the turbine cavity, and the turbine discharge section 15 is positioned at the position opposite to the turbine outlet; the transition section 9 is positioned in the middle cavity and isolates the medium in the pump cavity and the turbine cavity from each other;

a plurality of the pump impellers 5 are located in the inner cavity of the pump middle section 7, a plurality of the turbine impellers 14 are located in the inner cavities of the turbine middle section and the turbine discharge section 15, and the turbine impellers 14 and the pump impellers 5 are reversely arranged (not necessarily completely symmetrical). The pump middle section 7 and the inner cavity of the turbine middle section are provided with the pump guide vanes 6 matched with the pump impeller 5 and the turbine impeller 14.

A plurality of pump impellers 5 and turbine impellers 14 are positioned and connected with the common shaft 4 step by step through a clamping ring 12. And the positioning sleeve 13 is arranged between two adjacent pump impellers 5 and two adjacent turbine impellers 14. The stress generated on the common shaft 4 can be reduced, the risk of bending or fatigue breaking of the common shaft is eliminated, and as shown in fig. 3, the number of stages of the impellers of the pump and the turbine can be selected according to the working condition.

The intermediate bearing assembly is arranged in the inner cavity of the transition section 9, the intermediate bearing assembly comprises an intermediate bearing bush 10 and an intermediate bearing sleeve 11, the intermediate bearing bush 10 is mounted on the inner wall of the transition section 9, the intermediate bearing sleeve 11 is mounted on the outer wall of the common shaft 4, and the intermediate bearing bush 10 and the intermediate bearing sleeve 11 are combined in use in the rotating state of the common shaft 4. The intermediate bearing assembly is used for further supporting the common shaft 4, increasing the supporting rigidity of the common shaft 4 and realizing the mutual isolation of the turbine and the pumped medium.

The pump suction box body 3 is located at the position where the pump inlet is located, is fixedly connected with one end part of the shared cylinder 8 through a bolt, seals one end of the shared cylinder 8, the pump cover 16 is fixedly connected with the other end of the shared cylinder 8 through a bolt, seals the other end of the shared cylinder 8, and can integrally withdraw or load the core package after the bolt is removed, so that quick core pulling can be realized, and the requirement of on-site quick overhaul of a user is realized.

Both ends of the common shaft 4 pass through the pump suction housing 3 and the pump cover 16, respectively, and the pump end bearing member 1 and the turbine end bearing member 17 are mounted at both ends of the common shaft 4, respectively. The turbine end bearing assembly 17 comprises a radial bearing and the pump end bearing assembly 1 comprises a radial bearing and a thrust bearing.

The two sealing parts 2 are respectively arranged at the positions where the shared shaft 4 passes through the pump suction box body 3 and the pump cover 16, the outer parts are respectively fixedly connected with the pump suction box body 3 and the pump cover 16, and the inner parts are rotatably connected with the shared shaft 4.

The use state is as follows: fluid enters the turbine middle section through the turbine inlet and flows out of the turbine discharge section 15 and the turbine outlet to drive the turbine impeller 14 to rotate so as to drive the common shaft 4 to rotate, and at the moment, the pump impeller 5 rotates under the drive of the common shaft 4 to suck the fluid from the pump inlet and output the fluid from the pump outlet through the pump middle section 7.

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 can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the utility model.

Claims

1. A coaxial multistage cylinder bag hydraulic flat direct-drive pump is characterized by comprising a core bag with a shared cylinder body and an integral core-pulling structure;

the inner cavity of the middle section of the pump is provided with a pump impeller arranged on the common shaft, and the inner cavities of the middle section of the turbine and the turbine discharge section are provided with turbine impellers arranged on the common shaft.

2. The coaxial multistage tube bag hydraulic flat direct-drive pump according to claim 1, wherein a plurality of pump impellers and turbine impellers are respectively arranged, and the pump impellers and the turbine impellers are positioned and connected with the common shaft step by step through a clamping ring.

3. The coaxial multistage tube bag hydraulic flat direct drive pump according to claim 2, wherein a positioning sleeve is arranged between two adjacent pump impellers and between two adjacent turbine impellers.

4. The coaxial multistage cartridge hydrodynamic flat direct drive pump according to claim 1, wherein the cartridge further comprises an intermediate bearing assembly disposed at the inner cavity of the transition section, the intermediate bearing assembly comprising an intermediate bearing bushing mounted on the inner wall of the transition section and an intermediate bearing sleeve mounted on the outer wall of the common shaft, and the intermediate bearing bushing and intermediate bearing sleeve are used in combination in a rotational state of the common shaft.

5. A coaxial multistage cartridge hydraulic flat direct drive pump according to claim 1, wherein said pump outlet is proximate said intermediate chamber and said pump inlet is distal said intermediate chamber;

6. The coaxial multistage cartridge hydrodynamic flat direct drive pump according to claim 5, wherein said core pack further comprises a pump end bearing member and a turbine end bearing member mounted on said common shaft, both ends of said common shaft passing through said pump suction box and said pump cover, respectively, and said pump end bearing member and said turbine end bearing member being mounted on both ends of said common shaft, respectively.

7. The coaxial multistage cartridge hydrodynamic flat direct drive pump of claim 6, wherein said turbine end bearing assembly comprises a radial bearing and said pump end bearing assembly comprises a radial bearing and a thrust bearing.

8. The coaxial multistage tube bag hydraulic flat direct drive pump according to claim 5, wherein the core bag further comprises two sealing components, the two sealing components are respectively arranged at the position that the common shaft passes through the pump suction box body and the pump cover, the outer part is fixedly connected with the pump suction box body and the pump cover respectively, and the inner part is rotatably connected with the common shaft.

9. The coaxial multistage cartridge hydrodynamic flat drive pump of claim 1, wherein said core pack further comprises pump guide vanes mated with said pump impeller and said turbine impeller.