CN219549140U - Circulation residual oil reducing slurry booster pump - Google Patents

Abstract

The utility model relates to a circulating residual oil reducing slurry booster pump, which relates to the technical field of booster pumps, in particular to a hydrogenation feed pump which is used in industries such as petrochemical industry, coal chemical industry and the like, is suitable for conveying tar or crude oil, liquefied gas and the like which have trace particles or are inflammable, explosive, corrosive and abrasive high-temperature or high-pressure mediums, and is typically used in a residual oil hydrocracking device. The utility model has the advantages that the Taiji transition flow passages are arranged in the upper volute and the lower volute to replace the existing collision type transition flow passages. The Taiji type transition flow passage is a symmetrical layout mode similar to that of Taiji double fishes, and a medium stably enters the structure of the next stage through the Taiji six passages. The upper volute, the lower volute, the impeller, the driving end sealing part, the non-driving end sealing part and the visible part of the surface of the runner are coated with corrosion resistant layers; the corrosion-resistant layer is an alloy of WC, co and Cr. And winding pad groups are arranged between the upper volute body and the pump cover of the lower volute body and the barrel body component to compensate the thermal deformation of the barrel body component and the inner core, so that the inner core is axially positioned.

Description

Circulation residual oil reducing slurry booster pump

Technical Field

The utility model relates to a circulating residual oil reducing slurry booster pump, which relates to the technical field of booster pumps, in particular to a hydrogenation feed pump which is used in industries such as petrochemical industry, coal chemical industry and the like, is suitable for conveying tar or crude oil, liquefied gas and the like which have trace particles or are inflammable, explosive, corrosive and abrasive high-temperature or high-pressure mediums, and is typically used in a residual oil hydrocracking device.

Background

The temperature of a suspension bed unit circulation residual oil slurry reducing medium in a residual oil hydrocracking device is up to 375 ℃, the outlet pressure is up to 21MPa, the flow rate is up to 151m < 3 >/h, and the medium contains various abrasive solid particles, metal converters, vulcanized metal catalysts and the like; the conventional clash type hydraulic model has risks of vibration and the like for the operation of the working condition; because the medium working condition is particularly harsh, the corrosion and abrasion phenomena of the conventional material overflow parts can occur. The existing pump adopting the collision type transition flow passage has the defects of large hydraulic loss, low efficiency and poor running stability of the unit.

Aiming at the problems in the prior art, the research and design of a novel circulating residual oil reducing slurry booster pump is necessary to overcome the problems in the prior art.

Disclosure of Invention

According to the technical problems of the conventional collision type transition runner proposed by the prior art, the circulating residual oil reducing slurry booster pump is provided. The turbine body is mainly provided with the Tai Ji type transition flow passage instead of the existing collision type transition flow passage, the surface of part of the components is coated with a corrosion-resistant layer, and a winding pad group is arranged between the pump cover and the turbine body, so that the fluidity of a medium is improved, and the water conservancy loss is reduced; the corrosion resistance of the pump body is improved; ensuring the inner core to maintain axial positioning and the like.

The utility model adopts the following technical means:

a cyclical residuum slurry booster pump comprising: the device comprises a driving end bearing component, a driving end sealing component, a cylinder body component, an upper volute, an intermediate bushing, a throttling bushing, a non-driving end sealing component, a non-driving end bearing component, a warm pump liquid discharge pipeline, a shaft, a lower volute and an impeller; the impeller, the upper volute and the lower volute are sleeved on the shaft, and barrel components are sleeved outside the impeller, the upper volute and the lower volute; an intermediate bushing and an intermediate shaft sleeve are arranged between the upper volute and the lower volute and the shaft; a throttle bushing and a throttle shaft sleeve are assembled between the shaft and the pump cover of the cylinder body component; the front and rear of the cylinder body part are respectively provided with a driving end bearing part, a driving end sealing part, a non-driving end bearing part and a non-driving end sealing part; the warm pump liquid discharge pipeline is communicated with the cylinder part;

further, the interior of the upper volute body and the lower volute body is provided with a Taiji transition flow passage to replace the existing collision type transition flow passage.

Further, the Taiji type transition flow passage is in a symmetrical layout mode similar to that of Taiji double fishes, and a medium stably enters the structure of the next stage through the Taiji six passages.

Further, the upper volute, the lower volute, the impeller, the driving end sealing part, the non-driving end sealing part and the visible part of the surface of the runner are coated with corrosion resistant layers;

further, the corrosion-resistant layer is an alloy of WC, co and Cr.

Further, winding pad sets are arranged between the upper volute body and the pump cover of the lower volute body and the barrel body component to compensate thermal deformation of the barrel body component and the inner core, so that the inner core is kept axially positioned.

Further, a heat-insulating jacket is arranged outside the cylinder body part, and high-temperature steam is introduced into the inner cavity of the heat-insulating jacket.

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

1. according to the circulating residual oil reducing slurry booster pump provided by the utility model, the Tai Ji type transition flow passage is arranged in the volute to replace the collision type transition flow passage, so that the circulating residual oil reducing slurry booster pump is more beneficial to medium flow, has smaller hydraulic loss, is more compact in structure and is more stable in operation;

2. according to the circulating residual oil reducing slurry booster pump provided by the utility model, the influence of pre-rotation on the inlet of the lower-stage impeller is reduced by adding the flow stabilizing plate;

3. according to the circulating residual oil reducing slurry booster pump provided by the utility model, the surface hardness of the overflow part is higher than HRC62 by coating the corrosion-resistant layer on the visible parts of the surfaces of the upper volute, the lower volute, the impeller, the driving end sealing part, the non-driving end sealing part and the runner, so that the wear resistance of the centrifugal pump is improved, and the service life of the centrifugal pump is ensured;

4. according to the circulating residual oil reducing slurry booster pump provided by the utility model, the winding pad group is arranged between the volute body and the pump cover, so that the inner core is axially positioned, and the running reliability of the unit is improved;

5. the circulating residual oil slurry reducing booster pump provided by the utility model has the advantages that the heat-insulating jacket is designed on the outer side of the cylinder, high-temperature steam is introduced into the inner cavity of the jacket, the high-temperature thermal expansion state of the stator is ensured, the linear expansion of the stator and the rotor is relatively small, and the running reliability of the unit is improved.

In conclusion, the utility model has the advantages of high hydraulic performance, compact structure, convenient manufacture, installation and maintenance and long service life, and can meet the requirements of high-temperature high-pressure, corrosion and abrasive media in petrochemical devices.

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 the drawings without inventive effort to a person skilled in the art.

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a schematic view of a Taiji-type transition flow channel according to the present utility model;

FIG. 3 is a schematic view of a conventional clash transition flow channel;

FIG. 4 is a schematic view of the impeller coated with a corrosion resistant layer;

fig. 5 is a schematic diagram of an assembled winding mat.

In the figure: 1. the device comprises a driving end bearing part 2, a driving end sealing part 3, a cylinder body part 4, an upper volute body 5, an intermediate bushing 6, an intermediate shaft sleeve 7, a throttle bushing 8, a throttle shaft sleeve 9, a non-driving end sealing part 10, a non-driving end bearing part 11, a warm pump liquid discharge pipeline 12, a winding pad group 13, a shaft 14, a lower volute body 15, an impeller 16 and a heat preservation jacket.

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 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 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, the present utility model provides a circulating residuum-reducing slurry booster pump comprising: a driving end bearing part 1, a driving end sealing part 2, a cylinder part 3, an upper volute 4, an intermediate bushing 5, an intermediate shaft sleeve 6, a throttle bushing 7, a throttle shaft sleeve 8, a non-driving end sealing part 9, a non-driving end bearing part 10, a warm pump drain pipeline 11, a shaft 13, a lower volute 14 and an impeller 15; the impeller 15, the upper volute 4 and the lower volute 14 are sleeved on the shaft 13, and the barrel component 3 is sleeved outside the impeller 15, the upper volute 4 and the lower volute 14; an intermediate bushing 5 and an intermediate shaft sleeve 6 are arranged between the upper volute 4 and the lower volute 14 and the shaft 3; a throttle bushing 7 and a throttle sleeve 8 are assembled between the shaft 13 and the pump cover of the cylinder part 3; the front and rear of the cylinder part 3 are respectively provided with a driving end bearing part 1 and a driving end sealing part 2, and a non-driving end bearing part 10 and a non-driving end sealing part 9; the warm pump drain pipeline 11 is communicated with the cylinder part 3;

as shown in fig. 1, the inner parts of the upper volute 4 and the lower volute 14 are provided with Taiji transition flow passages, so that the existing collision type transition flow passages are replaced.

As shown in FIG. 2, the Taiji-type transition flow channel is in a symmetrical layout similar to that of Taiji double fishes, and the medium stably enters the structure of the next stage after passing through the Taiji six channels.

As shown in fig. 4, the upper volute 4, the lower volute 14, the impeller 15, the driving end sealing member 2, the non-driving end sealing member 9 and the visible part of the surface of the runner are coated with corrosion resistant layers; the corrosion-resistant layer is an alloy of WC, co and Cr.

As shown in fig. 1, a winding pad set 12 is arranged between the upper volute body 4, the lower volute body 14 and the pump cover of the barrel component 3, and thermal deformation of the barrel component 3 and the inner core is compensated, so that the inner core is kept axially positioned.

As shown in fig. 1, a heat-insulating jacket 16 is provided outside the tubular member 3, and high-temperature steam is introduced into the inner cavity of the heat-insulating jacket 16.

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 (5)

1. A cyclical residuum slurry booster pump comprising: the device comprises a driving end bearing component (1), a driving end sealing component (2), a cylinder body component (3), an upper volute (4), an intermediate bushing (5), an intermediate shaft sleeve (6), a throttle bushing (7), a throttle shaft sleeve (8), a non-driving end sealing component (9), a non-driving end bearing component (10), a warm pump liquid discharge pipeline (11), a shaft (13), a lower volute (14) and an impeller (15); the impeller (15), the upper volute (4) and the lower volute (14) are sleeved on the shaft (13), and the barrel part (3) is sleeved outside the impeller (15), the upper volute (4) and the lower volute (14); an intermediate bushing (5) and an intermediate shaft sleeve (6) are arranged between the upper volute (4) and the lower volute (14) and the shaft (13); a throttle bushing (7) and a throttle shaft sleeve (8) are arranged between the shaft (13) and the pump cover of the cylinder part (3); the front and rear of the cylinder body part (3) are respectively provided with a driving end bearing part (1) and a driving end sealing part (2), and a non-driving end bearing part (10) and a non-driving end sealing part (9); the warm pump liquid discharge pipeline (11) is communicated with the cylinder body part (3); the method is characterized in that:

the interior of the upper volute body (4) and the interior of the lower volute body (14) are provided with Taiji transition flow passages, so that the existing collision type transition flow passages are replaced.

2. The circulating resid-reducing slurry booster pump of claim 1, wherein:

the Taiji transition flow passage is in a symmetrical layout mode similar to that of Taiji double fishes, and a medium stably enters the structure of the next stage through the Taiji flow passage.

3. The circulating resid-reducing slurry booster pump of claim 1, wherein:

the upper volute body (4), the lower volute body (14), the impeller (15), the driving end sealing component (2), the non-driving end sealing component (9) and the visible part of the surface of the runner are coated with corrosion resistant layers.

4. The circulating resid-reducing slurry booster pump of claim 1, wherein:

and a winding pad group (12) is arranged between the upper volute body (4) and the lower volute body (14) and the pump cover of the cylinder body part (3), and thermal deformation of the cylinder body part (3) and the inner core is compensated, so that the inner core is maintained to be axially positioned.

5. The circulating resid-reducing slurry booster pump of claim 1, wherein:

the outside of the cylinder body part (3) is provided with a heat-insulating jacket (16), and high-temperature steam is introduced into the inner cavity of the heat-insulating jacket (16).