CN111379733A - Centrifugal pump degassing unit and paper pulp conveying system - Google Patents

Centrifugal pump degassing unit and paper pulp conveying system Download PDF

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Publication number
CN111379733A
CN111379733A CN202010350200.5A CN202010350200A CN111379733A CN 111379733 A CN111379733 A CN 111379733A CN 202010350200 A CN202010350200 A CN 202010350200A CN 111379733 A CN111379733 A CN 111379733A
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CN
China
Prior art keywords
centrifugal pump
pulp
section
exhaust
inner diameter
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Pending
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CN202010350200.5A
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Chinese (zh)
Inventor
王智广
姜艳春
刘少杰
杨家万
高杰
周彤
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Zhejiang Shanying Paper Industry Co Ltd
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Zhejiang Shanying Paper Industry Co Ltd
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Application filed by Zhejiang Shanying Paper Industry Co Ltd filed Critical Zhejiang Shanying Paper Industry Co Ltd
Priority to CN202010350200.5A priority Critical patent/CN111379733A/en
Publication of CN111379733A publication Critical patent/CN111379733A/en
Pending legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/007—Details, component parts, or accessories especially adapted for liquid pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
    • F04D15/0005—Control, e.g. regulation, of pumps, pumping installations or systems by using valves
    • F04D15/0022—Control, e.g. regulation, of pumps, pumping installations or systems by using valves throttling valves or valves varying the pump inlet opening or the outlet opening
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
    • F04D29/426—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for liquid pumps
    • F04D29/4293—Details of fluid inlet or outlet
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
    • F04D29/669—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for liquid pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D7/00—Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts
    • F04D7/02—Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts of centrifugal type
    • F04D7/04—Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts of centrifugal type the fluids being viscous or non-homogenous

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Paper (AREA)

Abstract

The invention discloses a centrifugal pump degassing device and a paper pulp conveying system, wherein the centrifugal pump degassing device comprises a pulp inlet pipeline for connecting a pulp tank and a centrifugal pump, at least one reducing section is arranged on the pulp inlet pipeline, and the inner diameter of the reducing section is smaller than that of the pulp inlet pipeline positioned at the upstream of the reducing section; at least one of the reducing sections is provided with an air outlet, and an air exhaust barrel is arranged at the air outlet. By contrast, after the air is exhausted by the centrifugal pump degassing device, the cyclone at the center of the centrifugal pump impeller disappears, and the pumping capacity of the centrifugal pump is improved by 30 percent; meanwhile, under the same flow and lift, the output power of the centrifugal pump is obviously reduced, and the electricity is saved by 30%.

Description

Centrifugal pump degassing unit and paper pulp conveying system
Technical Field
The invention belongs to the technical field of papermaking, and particularly relates to a centrifugal pump degassing device and a paper pulp conveying system.
Background
The centrifugal pump is a pump for conveying liquid by the centrifugal force generated when an impeller rotates, and generally comprises a volute, wherein the impeller is rotatably arranged in the volute, a motor for driving the impeller to rotate is arranged outside the volute, a liquid inlet opposite to the impeller is arranged in the axial center of the volute, and a liquid outlet is arranged in the circumferential direction of the volute.
The working principle of the centrifugal pump is as follows: the fluid entering the centrifugal pump rotates along with the impeller, is thrown from the center of the impeller to the periphery under the action of inertial centrifugal force and obtains energy, so that the static pressure of the fluid flowing to the periphery of the impeller is improved, and the flow speed is increased; the fluid leaving the impeller is thrown onto the volute of the centrifugal pump, and because the flow channel in the volute is gradually enlarged, the flow speed of the fluid is gradually reduced in the process of flowing along the flow channel, part of kinetic energy of the fluid is converted into static pressure energy, and then the liquid with higher pressure enters a discharge pipeline from the discharge port of the pump and is conveyed to a required pipeline system.
In the paper making industry, it is often necessary to use a conveying device such as a centrifugal pump to uniformly convey pulp to each downstream process. However, unlike other fluids, the paper industry requires that the pulp be maintained at a uniform consistency during transportation, and therefore, it is often necessary to provide a stirring process upstream of the centrifugal pump, and the pulp is uniformly stirred and then delivered to a downstream process by the centrifugal pump.
However, the intensive stirring of the stirring process may cause a large amount of air to be mixed into the pulp, when the pulp mixed with a large amount of air bubbles enters the centrifugal pump, the impeller pushes the pulp to be conveyed, the air bubbles are driven to be separated from the pulp during the rotation of the impeller, and the separated air bubbles are gathered at the center of the impeller to form a cyclone, and the cyclone causes the conveying capacity of the centrifugal pump to be reduced by more than 30%.
In order to remove air bubbles in paper pulp and avoid influencing the conveying capacity of the centrifugal pump, the chinese utility model patent with publication number CN205401148U discloses a centrifugal pump, which comprises a volute provided with a pump cavity, a pump shaft and an impeller positioned in the pump cavity, a driving device for driving the pump shaft to rotate, and an air extractor positioned outside the volute, wherein the impeller is sleeved on the pump shaft, the pump shaft is provided with a first exhaust hole, the impeller is provided with at least one second exhaust hole communicated with the first exhaust hole and the pump cavity, and one end of the first exhaust hole, which is far away from the second exhaust hole, is communicated with the air extractor.
The centrifugal pump has the disadvantages that paper pulp is easy to fill into the first exhaust hole and the second exhaust hole, so that the exhaust holes are blocked by solid matters in the paper pulp, and the original air suction effect is lost.
Also for example, chinese patent publication No. CN1147342C discloses a centrifugal gas separation pump comprising a hollow rotary barrel having one end connected to a stationary fluid inlet and the other end connected to a stationary fluid outlet, and having an exhaust pipe at its center, the rotary barrel having an impeller at the inlet to rotate the liquid in the rotary barrel; the impeller having arcuate blades in the shape of a bucket for accelerating the flow velocity of the liquid at the inlet end of the rotary tub and causing the fluid to rotate at a peripheral velocity higher than that of the inlet end of the rotary tub; the arc-shaped blades extend inwards from the inner wall of the rotary barrel, the front edges of the arc-shaped blades face the static inlet end, the outlet edges face the inner wall of the rotary barrel, and an angle is formed between the outlet edges and a parallel line of the central line of the rotary barrel. The centrifugal gas separation pump has the advantages of large volume, complex structure and high manufacturing cost.
Disclosure of Invention
The invention aims to provide a centrifugal pump degassing device and a paper pulp conveying system.
In order to achieve the purpose, the technical scheme of the invention is as follows:
a centrifugal pump degassing device comprises a slurry inlet pipeline for connecting a slurry pool and a centrifugal pump, wherein at least one reducing section is arranged on the slurry inlet pipeline, and the inner diameter of the reducing section is smaller than that of the slurry inlet pipeline positioned at the upstream of the reducing section; at least one of the reducing sections is provided with an air outlet, and an air exhaust barrel is arranged at the air outlet.
In the centrifugal pump degassing device, the exhaust funnel is communicated with the pulp tank through the pulp inlet pipeline, so that paper pulp can flow into the exhaust funnel; the pulp flows on the pulp inlet pipeline, and the inner diameter of the diameter-variable section is smaller, so that the fluid pressure at the diameter-variable section is smaller, bubbles in the pulp float upwards due to the increase of the volume, and enter the exhaust funnel through the exhaust port; in the exhaust funnel, paper pulp hardly flows, so that the pressure is further reduced from the bottom end to the top end of the exhaust funnel, and bubbles continue to expand and float until the bubbles escape from the exhaust funnel, thereby achieving the purpose of exhausting.
By contrast, after the air is exhausted by the centrifugal pump degassing device, the cyclone at the center of the centrifugal pump impeller disappears, and the pumping capacity of the centrifugal pump is improved by 30 percent; meanwhile, under the same flow and lift, the output power of the centrifugal pump is obviously reduced, and the electricity is saved by 30%.
The inner diameter of the variable-diameter section can be constant or gradually reduced, as long as the inner diameter of the variable-diameter section is ensured to be smaller than that of the slurry inlet pipeline positioned at the upstream of the variable-diameter section. However, in order to further increase the speed of the bubbles floating up in the pulp, in the above-mentioned centrifugal pump deaeration arrangement, the inner diameter of the above-mentioned tapered section gradually decreases in the pulp feeding direction of the pulp inlet conduit. So fluid pressure diminishes gradually at the reducing section, and the bubble volume is at the uniform velocity grow, and bubble floating rate further promotes.
In the above degassing apparatus of the centrifugal pump, the reducer section is an eccentric reducer with a straight section, which is installed on the slurry inlet pipeline. The straight-section eccentric reducer is convenient to mount on a pulp inlet pipeline and mount an exhaust funnel on the top edge of a reducer section.
In order to further improve the exhaust efficiency, in the centrifugal pump degassing apparatus, the inner diameter of the exhaust pipe is larger than the inner diameter of the exhaust port. Therefore, the pressure at the pressure alternating diameter section in the exhaust cylinder is lower, and the bubbles in the paper pulp are accelerated to expand and float.
Preferably, in the centrifugal pump degassing apparatus, the inner diameter of the exhaust pipe is larger than the inner diameter of the slurry inlet end of the reducing section.
Preferably, in the centrifugal pump degassing apparatus, the inner diameter of the exhaust funnel is at least three times the inner diameter of the slurry inlet end of the reducing section. The larger the inner diameter of the exhaust funnel is, the higher the expansion rate of the bubbles in the pulp is, and the higher the degassing efficiency is.
In the centrifugal pump degassing device, the exhaust funnel is vertically arranged on the reducer section, and the height of the exhaust funnel is not lower than the highest liquid level of the pulp in the pulp tank.
In the above-mentioned centrifugal pump degassing device, the exhaust funnel is made of stainless steel seamless steel pipe; and a ball valve is arranged at the top end of the exhaust cylinder.
The inner wall of the stainless steel seamless steel tube is smooth, and no air bubbles are left. The ball valve installed at the top end is in a normally open state, and an air exhaust device can be installed at the ball valve when the degassing speed needs to be further accelerated.
In the above-mentioned centrifugal pump degassing device, the pulp inlet pipeline is provided with a valve for regulating the flow rate of the pulp. The output power of different centrifugal pumps is different, and is different to the delivery rate of paper pulp, sets up the velocity of flow of paper pulp in the valve is convenient for control advance thick liquid pipeline, avoids the velocity of flow too fast and leads to the degasification efficiency to descend.
The pulp conveying system comprises a pulp tank for storing the pulp, a centrifugal pump for conveying the pulp and the centrifugal pump degassing device, wherein the pulp inlet end of the centrifugal pump degassing device is connected with the pulp tank, and the pulp outlet end of the centrifugal pump degassing device is connected with the centrifugal pump.
Compared with the prior art, the invention has the beneficial effects that:
(1) in the centrifugal pump degassing device, the exhaust funnel is communicated with the pulp tank through the pulp inlet pipeline, so that paper pulp can flow into the exhaust funnel; the pulp flows on the pulp inlet pipeline, and the inner diameter of the diameter-variable section is smaller, so that the fluid pressure at the diameter-variable section is smaller, bubbles in the pulp float upwards due to the increase of the volume, and enter the exhaust funnel through the exhaust port; in the exhaust funnel, paper pulp hardly flows, so that the pressure is further reduced from the bottom end to the top end of the exhaust funnel, and bubbles continue to expand and float until escaping from the exhaust funnel, thereby achieving the purpose of exhausting; by contrast, after the air is exhausted by the centrifugal pump degassing device, the cyclone at the center of the centrifugal pump impeller disappears, and the pumping capacity of the centrifugal pump is improved by 30 percent; meanwhile, under the same flow and lift, the output power of the centrifugal pump is obviously reduced, and the electricity is saved by 30%.
(2) In the degassing device of the centrifugal pump, the inner diameter of the reducing section is gradually reduced along the slurry feeding direction of the slurry inlet pipeline; so fluid pressure diminishes gradually at the reducing section, and the bubble volume is at the uniform velocity grow, and bubble floating rate further promotes.
(3) In the degassing device of the centrifugal pump, the inner diameter of the exhaust cylinder is larger than that of the exhaust port, so that the pressure in the exhaust cylinder is smaller than that at the diameter-variable section, and bubbles in the paper pulp are accelerated to expand and float upwards.
(4) In the degassing device of the centrifugal pump, the exhaust funnel is made of a stainless steel seamless steel pipe, the inner wall of the stainless steel seamless steel pipe is smooth, and no bubble is left; the top end of the exhaust funnel is provided with a ball valve which is in a normally open state, and an air extractor can be arranged at the ball valve when the degassing speed is required to be further accelerated.
(5) In the degassing device of the centrifugal pump, a valve for adjusting the flow of paper pulp is arranged on the pulp inlet pipeline; therefore, the flow speed of the paper pulp in the pulp inlet pipeline can be conveniently controlled, and the phenomenon that the degassing efficiency is reduced due to the overhigh flow speed is avoided.
Drawings
FIG. 1 is a schematic structural diagram of a centrifugal pump degassing device of the present invention.
Detailed Description
The technical solution of the present invention will be further described in detail with reference to the accompanying drawings and the detailed description.
Example 1
As shown in fig. 1, the centrifugal pump degassing apparatus of the present embodiment includes a slurry inlet pipeline 1 for communicating a slurry tank 100 and a centrifugal pump 200, a slurry inlet end of the slurry inlet pipeline 1 is located at the bottom of the slurry tank 100, and above the slurry inlet pipeline 1, a stirring device 300 is installed on a side wall of the slurry tank 100, and the stirring device 300 is used for stirring the pulp entering the slurry tank 100 from a slurry inlet 101 to ensure that the pulp entering the slurry inlet pipeline 1 maintains a relatively uniform concentration. The pulp inlet pipeline 1 of the embodiment is also provided with a valve 2, and the valve 2 is used for adjusting the pulp conveying speed.
As shown in fig. 1, at least one reducing section 3 is arranged on the slurry inlet pipeline 1, and the inner diameter of each reducing section 3 is smaller than that of the slurry inlet pipeline 1 at the upstream of the reducing section 3; at least one of the reducing sections 3 is provided with an exhaust port (not shown), and an exhaust pipe 4 is installed at the exhaust port.
Because the inner diameter of the reducing section 3 is smaller (the cross section is smaller), the flow speed of the paper pulp flowing through the reducing section 3 is faster, so that the fluid pressure at the reducing section 3 is smaller, and the bubbles in the paper pulp float upwards due to the increase of the volume and enter the exhaust funnel 4 through the exhaust port; in the exhaust funnel 4, the pulp hardly flows, so that the pressure further decreases from the bottom end to the top end of the exhaust funnel 4, and the bubbles continue to expand and float up until escaping from the exhaust funnel 4, thereby achieving the purpose of exhausting.
The inner diameter of the reducer section 3 may be constant or gradually smaller, as long as the inner diameter of the reducer section 3 is smaller than the inner diameter of the slurry inlet pipeline 1 located upstream of the reducer section 3. However, in order to further increase the floating speed of the bubbles in the pulp, in the embodiment, the reducing section 3 is a straight eccentric reducing pipe 31 installed on the pulp inlet pipeline 1; the inner diameter of the straight eccentric reducing pipe 31 is gradually reduced, and the fluid pressure changes at a constant speed, so that the paper pulp is kept in a stable state. Meanwhile, the straight eccentric reducer 31 is convenient to be installed on the slurry inlet pipeline 1 and is also convenient to install the exhaust funnel 4 on the top edge of the reducer section 3.
As shown in fig. 1, in the present embodiment, the exhaust funnel 4 is vertically installed on the reducer section 3; the top end of the exhaust funnel 4 is located at a height equivalent to the highest liquid level 102 of the pulp in the pulp chest 100, or the top end of the exhaust funnel 4 is located at a height higher than the highest liquid level 102 of the pulp in the pulp chest 100, so as to avoid the pulp from overflowing from the top end of the exhaust funnel 4. It is clear that in order to ensure that the highest level 102 of pulp in the pulp tank 100 remains constant, an overflow 103 is provided in the pulp tank 100.
In this embodiment, the exhaust funnel 4 is made of a stainless seamless steel pipe to ensure that the inner wall of the exhaust funnel 4 is smooth and no air bubbles remain. The top end of the exhaust funnel 4 is also provided with a ball valve 5, the ball valve 5 is in a normally open state, and an air extraction device (not shown in the figure) can be arranged at the ball valve 5 when the degassing speed needs to be further accelerated.
As shown in fig. 1, in the present embodiment, the inner diameter of the exhaust funnel 4 is larger than that of the exhaust port; thus, the pressure at the pressure alternating diameter section 3 in the exhaust stack 4 is smaller, and the bubbles in the pulp are accelerated to expand and float. The inner diameter of the exhaust port is affected by the inner diameter of the reducer section 3, and therefore, in actual practice, the inner diameter of the exhaust funnel 4 can be set to be at least three times (three times in the present embodiment) the inner diameter of the slurry inlet end of the reducer section 3. The larger the inner diameter of the funnel 4, the higher the expansion rate of the bubbles in the pulp and the higher the degassing efficiency.
The working principle of the centrifugal pump degassing device of the embodiment is as follows: the paper pulp enters the pulp tank 100 through the pulp inlet 101, and the stirring device 300 stirs the paper pulp in the pulp tank 100 to ensure that the paper pulp entering the pulp inlet pipeline 1 keeps uniform concentration; under the action of the centrifugal pump 200, the uniformly stirred paper pulp enters the pulp inlet pipeline 1, and the flow rate of the paper pulp in the pulp inlet pipeline 1 can be controlled by using the valve 2;
when the paper pulp flows to the reducing section 3, the paper pulp flows into the exhaust funnel 4 through the exhaust port; because the inner diameter of the reducing section 3 is reduced, the fluid pressure at the reducing section 3 is reduced, so that bubbles in the paper pulp float upwards due to the increase of the volume and enter the exhaust funnel 4 through the exhaust port; in the exhaust funnel 4, the pulp hardly flows, and the pressure further decreases from the bottom end to the top end of the exhaust funnel 4, so that the bubbles continue to expand and float up until the bubbles escape from the exhaust funnel 4, thereby achieving the purpose of exhausting.
The pulp is conveyed by adopting a common pulp conveying system (the pulp inlet pipeline 1 is a closed pipeline and is not provided with the exhaust funnel 4) and the pulp conveying system (the pulp inlet pipeline 1 is provided with the exhaust funnel 4) of the embodiment, and the pumping capacity of the centrifugal pump 200 and the electricity utilization condition of the system are examined.
By contrast, after the air is exhausted by the centrifugal pump degassing device, the cyclone at the center of the impeller of the centrifugal pump 200 disappears, and in the pulp conveying system of the embodiment, the pumping capacity of the centrifugal pump 200 is improved by 30%; meanwhile, under the same flow and lift, the output power of the centrifugal pump 200 in the pulp conveying system of the embodiment is obviously reduced, and the electricity is saved by 30%.

Claims (10)

1. A centrifugal pump degassing device comprises a slurry inlet pipeline (1) connecting a slurry pool (100) and a centrifugal pump (200), and is characterized in that at least one reducing section (3) is arranged on the slurry inlet pipeline (1), and the inner diameter of the reducing section (3) is smaller than that of the slurry inlet pipeline (1) positioned at the upstream of the reducing section (3); an air outlet is formed in at least one of the reducing sections (3), and an air exhaust barrel (4) is installed at the air outlet.
2. Centrifugal pump degassing device according to claim 1, characterized in that the inner diameter of the reducer section (3) is gradually reduced in the slurry feeding direction of the slurry inlet pipe (1).
3. Centrifugal pump degassing device according to claim 1, characterized in that said reducer (3) is a straight eccentric reducer (31) mounted on the slurry inlet pipe (1).
4. A centrifugal pump degassing apparatus according to any one of claims 1-3, wherein the inner diameter of said exhaust funnel (4) is larger than the inner diameter of the exhaust port.
5. Centrifugal pump degassing device according to claim 4, characterized in that the internal diameter of said chimney (4) is larger than the internal diameter of the slurry inlet end of said reducer section (3).
6. Centrifugal pump degassing apparatus according to claim 5, wherein the internal diameter of said chimney (4) is at least three times the internal diameter of the slurry inlet end of said reducer section (3).
7. A centrifugal pump degassing apparatus according to any one of claims 1-3, characterized in that said degassing vessel (4) is vertically mounted on said reducer section (3), said degassing vessel (4) having a height not lower than the highest level (102) of the pulp in the stock chest (100).
8. A centrifugal pump degassing apparatus according to any one of claims 1-3, characterized in that said chimney (4) is made of stainless steel seamless steel pipe; and a ball valve (5) is arranged at the top end of the exhaust funnel (4).
9. A centrifugal pump de-aeration device according to any one of claims 1-3, characterized in that the stock inlet line (1) is provided with a valve (2) for regulating the flow of pulp.
10. A pulp transportation system comprising a stock chest (100) for storing pulp, and a centrifugal pump (200) for transporting pulp, characterized in that it further comprises a centrifugal pump de-aeration device according to any of claims 1-9, the inlet end of which is connected to the stock chest (100), and the outlet end of which is connected to the centrifugal pump (200).
CN202010350200.5A 2020-04-28 2020-04-28 Centrifugal pump degassing unit and paper pulp conveying system Pending CN111379733A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010350200.5A CN111379733A (en) 2020-04-28 2020-04-28 Centrifugal pump degassing unit and paper pulp conveying system

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Application Number Priority Date Filing Date Title
CN202010350200.5A CN111379733A (en) 2020-04-28 2020-04-28 Centrifugal pump degassing unit and paper pulp conveying system

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CN111379733A true CN111379733A (en) 2020-07-07

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CN202010350200.5A Pending CN111379733A (en) 2020-04-28 2020-04-28 Centrifugal pump degassing unit and paper pulp conveying system

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112938885A (en) * 2021-04-16 2021-06-11 南京师范大学 Bubble-removing lubricating oil conveying system
CN114838007A (en) * 2022-05-06 2022-08-02 安徽晋煤中能化工股份有限公司 Cavitation-proof protection device of steam condensate pump

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112938885A (en) * 2021-04-16 2021-06-11 南京师范大学 Bubble-removing lubricating oil conveying system
CN112938885B (en) * 2021-04-16 2024-04-16 南京师范大学 Bubble-removing lubricating oil conveying system
CN114838007A (en) * 2022-05-06 2022-08-02 安徽晋煤中能化工股份有限公司 Cavitation-proof protection device of steam condensate pump

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