CN213039474U - Low-leakage-point radial split volute type heavy-station petrochemical engineering process pump - Google Patents
Low-leakage-point radial split volute type heavy-station petrochemical engineering process pump Download PDFInfo
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- CN213039474U CN213039474U CN202021957176.3U CN202021957176U CN213039474U CN 213039474 U CN213039474 U CN 213039474U CN 202021957176 U CN202021957176 U CN 202021957176U CN 213039474 U CN213039474 U CN 213039474U
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- 238000007789 sealing Methods 0.000 claims description 10
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Abstract
The utility model discloses low leakage point radial subdivision spiral case formula heavy industry position petrochemical industry process pump relates to high temperature, high pressure, easily fires, explosive, corrodes the novel low leakage point radial subdivision spiral case formula heavy industry position petrochemical industry process pump under the operating mode conditions such as corrosion. The utility model is provided with a built-in balance pipeline, which consists of a pump body internal balance hole arranged inside the pump body, a discharge pump cover internal balance hole arranged inside the discharge pump cover, a backflow hole on the discharge bush and a gap between the discharge bush and the rotating part; the high-pressure medium behind the secondary impeller sequentially enters the internal balance hole of the discharge pump cover and the internal balance hole of the pump body through the backflow hole in the discharge bush along the gap between the discharge bush and the rotating part, finally flows into the pump body inlet on the pump body and then enters the pump body again for next circulation, and the medium forms a built-in balance pipeline in the pump body. The pump body external balance pipeline connection mode among the prior art has been solved to it, and the leakage point is many, the pipeline is complicated, risk factor great scheduling problem.
Description
Technical Field
The utility model discloses low leakage point radial subdivision spiral case formula heavy industry position petrochemical industry process pump relates to centrifugal pump technical field, especially relates to a novel low leakage point radial subdivision spiral case formula heavy industry position petrochemical industry process pump under the operating mode conditions such as use high temperature, high pressure, easily fire, easily explode, corrode.
Background
At present, in petrochemical equipment, occasions with high temperature, high pressure, flammability, explosiveness and corrosion requirements are involved, and when the requirement on a leakage point of a pump is extremely high, the following problems can be encountered by selecting pump equipment:
by adopting a common balance pipeline connection mode (pump body external balance pipeline connection), the leakage points are more, the pipelines are complex, and the risk coefficient of the leakage under the working conditions is larger.
Aiming at the problems in the prior art, a novel low-leakage-point radially split volute type heavy-station petrochemical engineering process pump is researched and designed, so that the problem in the prior art is very necessary to be overcome.
Disclosure of Invention
According to the technical problems that the number of leakage points is large, the pipeline is complex, the risk coefficient is large and the like in the pump body external balance pipeline connection mode provided by the prior art, the low-leakage-point radially split volute type heavy-station petrochemical engineering process pump is provided. The utility model discloses mainly adopt and set up built-in balanced pipeline inside the pump case to reach and reduce the leakage point, reduce the loss of volume, the effect of raise the efficiency and the reliability.
The utility model discloses a technical means as follows:
a low-leakage-point radially split volute type heavy-station petrochemical engineering process pump comprises: the pump comprises a driving end bearing part, a sealing part, a suction pump cover, a primary impeller, a pump body, a secondary impeller, a discharge pump cover, a non-driving end bearing part, a shaft and a discharge lining; the shaft passes through the pump body and is provided with a primary impeller and a secondary impeller; the suction pump cover is arranged on the suction chamber side of the pump body through a stud and a nut; the discharge pump cover provided with the discharge bush is arranged on the discharge chamber side of the pump body through a stud and a nut; the outside of the suction pump cover is sequentially provided with a sealing part and a driving end bearing part; the rear part of the discharge pump cover is sequentially provided with a sealing part and a non-driving end bearing part;
furthermore, the low-leakage-point radial subdivision volute type heavy-station petrochemical engineering process pump is also provided with a built-in balance pipeline.
Furthermore, the built-in balance pipeline consists of a pump body internal balance hole arranged inside the pump body, a discharge pump cover internal balance hole arranged inside the discharge pump cover, a backflow hole on the discharge lining and a gap between the discharge lining and the rotating component;
furthermore, the internal balance hole of the pump body is arranged in the pump body, the inlet end of the internal balance hole is positioned at the end surface of the contact end of the pump body and the discharge pump cover, and the outlet end of the internal balance hole is communicated with the pump body inlet of the pump body;
furthermore, the internal balance hole of the pump cover is arranged inside the discharge pump cover, the inlet end of the internal balance hole of the pump cover is positioned at the end surface of the contact end of the discharge pump cover and the discharge bush, and the outlet end of the internal balance hole of the pump body is arranged at the end surface of the contact end of the discharge pump cover and the pump body and is correspondingly arranged with the internal balance hole of the pump body to be connected into a communicating pipeline;
furthermore, the backflow hole is arranged on the discharge bushing, the inlet end of the backflow hole is communicated with the gap between the discharge bushing and the rotating component, and the outlet end of the backflow hole is connected with the balance hole in the pump cover at a position corresponding to the balance hole in the pump cover to form a communicated pipeline.
Furthermore, high-pressure media behind the secondary impeller sequentially enter the balance hole inside the discharge pump cover and the balance hole inside the pump body through the backflow hole in the discharge bush along the gap between the discharge bush and the rotating component, finally flow into the pump body inlet on the pump body and then enter the pump body again for next circulation, and the media form a loop inside the pump body, so that a built-in balance pipeline is realized; external connecting pipelines of the pump are reduced, the safety of the pump is improved, and the piping cost of the pump is reduced; meanwhile, as the balance pipeline is internally arranged, leakage points are reduced, volume loss is reduced, and the efficiency and the reliability of the pump are improved.
Compared with the prior art, the utility model has the advantages of it is following:
1. the utility model provides a low leakage point radially subdivision spiral case formula heavy station petrochemical industry process pump, through spitting the assembly relation of pump cover, pump body and the pressure differential of different position mediums, the medium forms the return circuit in pump casing inside, has realized built-in balanced pipeline, has reduced the external connecting line of pump, has improved the security of pump, has reduced the piping cost of pump;
2. the utility model provides a low leakage point radially subdivides spiral case formula heavy station petrochemical industry process pump because the balance pipeline is built-in, has reduced the leakage point of pump, has reduced the volumetric loss, has improved the efficiency and the reliability of pump, and this advantage is especially outstanding when carrying high temperature, high pressure, easily fire, explosive, corrosive medium.
To sum up, use the technical scheme of the utility model the pump body external balance pipeline connected mode among the prior art has been solved, the leakage point is many, the pipeline is complicated, the great scheduling problem of risk coefficient.
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 structural view of the present invention;
fig. 2 is a schematic view of the medium flow in the built-in balance pipeline of the present invention.
In the figure: 1. the pump comprises a driving end bearing component 2, a sealing component 3, a suction pump cover 4, a primary impeller 5, a pump body 5.1, a pump body internal balance hole 5.2, a pump body inlet 6, a secondary impeller 7, a discharge pump cover 7.1, a discharge pump cover internal balance hole 8, a non-driving end bearing component 9, a shaft 10, a discharge bush 10.1 and a backflow hole.
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. Any specific values in all examples shown and discussed herein are to be construed as exemplary only and not as 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 the figure, the utility model provides a low leakage point radially subdivides spiral case formula heavy station petrochemical industry process pump, include: the pump comprises a driving end bearing part 1, a sealing part 2, a suction pump cover 3, a primary impeller 4, a pump body 5, a secondary impeller 6, a discharge pump cover 7, a non-driving end bearing part 8, a shaft 9 and a discharge bush 10; the shaft 9 passes through the pump body 5 and is provided with the primary impeller 4 and the secondary impeller 6; the suction pump cover 3 is arranged on the suction chamber side of the pump body 5 through a stud and a nut; the discharge pump cover 7 provided with the discharge bush 10 is arranged on the discharge chamber side of the pump body 5 through a stud and a nut; the outside of the suction pump cover 3 is sequentially provided with a sealing part 2 and a driving end bearing part 1; the rear part of the discharge pump cover 7 is sequentially provided with a sealing part 2 and a non-driving end bearing part 8;
the low-leakage-point radial subdivision volute type heavy-station petrochemical engineering process pump is also provided with a built-in balance pipeline.
The built-in balance pipeline consists of a pump body internal balance hole 5.1 arranged inside the pump body 5, a discharge pump cover internal balance hole 7.1 arranged inside the discharge pump cover 7, a backflow hole 10.1 on the discharge bush 10 and a gap between the discharge bush 10 and the rotating component;
the internal balance hole 5.1 of the pump body is arranged in the pump body 5, the inlet end of the internal balance hole is positioned at the end surface of the contact end of the pump body 5 and the discharge pump cover 7, and the outlet end of the internal balance hole is communicated with the pump body inlet 5.2 of the pump body 5;
the pump cover internal balance hole 7.1 is arranged inside the discharge pump cover 7, the inlet end of the pump cover internal balance hole is positioned at the end surface of the contact end of the discharge pump cover 7 and the discharge bush 10, and the outlet end of the pump cover internal balance hole is arranged at the end surface of the contact end of the discharge pump cover 7 and the pump body 5, corresponds to the pump body internal balance hole 5.1 and is connected into a communicating pipeline;
the backflow hole 10.1 is arranged on the discharge bush 10, the inlet end of the backflow hole is communicated with the gap between the discharge bush 10 and the rotating component, and the outlet end of the backflow hole is connected with the balance hole 7.1 in the pump cover at the position corresponding to the balance hole 7.1 in the pump cover to form a communicating pipeline.
The high-pressure medium behind the secondary impeller 6 sequentially enters the discharge pump cover internal balance hole 7.1 and the pump body internal balance hole 5.1 through the backflow hole 10.1 on the discharge bush 10 along the gap between the discharge bush 10 and the rotating member, finally flows into the pump body inlet 5.2 on the pump body 5, and then enters the pump body 5 again for next circulation, and the medium forms a loop inside the pump shell.
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 (5)
1. A low-leakage-point radially split volute type heavy-station petrochemical engineering process pump comprises: the device comprises a driving end bearing part (1), a sealing part (2), a suction pump cover (3), a primary impeller (4), a pump body (5), a secondary impeller (6), a discharge pump cover (7), a non-driving end bearing part (8), a shaft (9) and a discharge lining (10); the shaft (9) penetrates through the pump body (5) and is provided with a primary impeller (4) and a secondary impeller (6); the suction pump cover (3) is arranged on the suction chamber side of the pump body (5) through a stud and a nut; a discharge pump cover (7) provided with a discharge bush (10) is arranged on the discharge chamber side of the pump body (5) through a stud and a nut; the outside of the suction pump cover (3) is sequentially provided with a sealing part (2) and a driving end bearing part (1); the rear part of the discharge pump cover (7) is sequentially provided with a sealing part (2) and a non-driving end bearing part (8);
the low-leakage-point radial subdivision volute type heavy-station petrochemical engineering process pump is characterized in that a built-in balance pipeline is further arranged.
2. The low-leakage-point radially split volute type heavy-station petrochemical engineering process pump according to claim 1, wherein the built-in balance pipeline is composed of a pump body internal balance hole (5.1) formed in the pump body (5), a discharge pump cover internal balance hole (7.1) formed in the discharge pump cover (7), a backflow hole (10.1) formed in the discharge bush (10), and a gap between the discharge bush (10) and a rotating component; the high-pressure medium behind the secondary impeller (6) sequentially enters a discharge pump cover internal balance hole (7.1) and a pump body internal balance hole (5.1) through a backflow hole (10.1) on the discharge bush (10) along a gap between the discharge bush (10) and the rotating part, finally flows into a pump body inlet (5.2) on the pump body (5) and then enters the pump body (5) again for next circulation, and the medium forms a built-in balance pipeline inside the pump shell.
3. The low-leakage-point radially split volute type heavy-station petrochemical engineering process pump according to claim 2, wherein the pump body internal balance hole (5.1) is formed in the pump body (5), the inlet end of the pump body internal balance hole is located at the end face of the contact end of the pump body (5) and the discharge pump cover (7), and the outlet end of the pump body internal balance hole is communicated with the pump body inlet (5.2) of the pump body (5).
4. The low-leakage-point radially split volute type heavy-station petrochemical engineering process pump according to claim 2, wherein the pump cover internal balance hole (7.1) is formed in the discharge pump cover (7), the inlet end of the pump cover internal balance hole is located at the end face of the contact end of the discharge pump cover (7) and the discharge lining (10), and the outlet end of the pump cover internal balance hole is formed in the end face of the contact end of the discharge pump cover (7) and the pump body (5) and corresponds to the pump body internal balance hole (5.1) to be connected into a communication pipeline.
5. The low-leakage-point radially split volute type heavy-station petrochemical engineering process pump according to claim 2, wherein the backflow hole (10.1) is formed in the discharge bushing (10), an inlet end of the backflow hole is communicated with a gap between the discharge bushing (10) and the rotating component, and an outlet end of the backflow hole is connected with the balance hole (7.1) in the pump cover at a position corresponding to the balance hole (7.1) in the pump cover to form a communication pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021957176.3U CN213039474U (en) | 2020-09-09 | 2020-09-09 | Low-leakage-point radial split volute type heavy-station petrochemical engineering process pump |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021957176.3U CN213039474U (en) | 2020-09-09 | 2020-09-09 | Low-leakage-point radial split volute type heavy-station petrochemical engineering process pump |
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| Publication Number | Publication Date |
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| CN213039474U true CN213039474U (en) | 2021-04-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202021957176.3U Active CN213039474U (en) | 2020-09-09 | 2020-09-09 | Low-leakage-point radial split volute type heavy-station petrochemical engineering process pump |
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| CN (1) | CN213039474U (en) |
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