CN214698358U

CN214698358U - Single-stage double-suction horizontal centrifugal pump vacuum pumping visual device

Info

Publication number: CN214698358U
Application number: CN202120859402.2U
Authority: CN
Inventors: 吕东锦
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-04-25
Filing date: 2021-04-25
Publication date: 2021-11-12
Anticipated expiration: 2031-04-25

Abstract

The utility model discloses a horizontal centrifugal pump evacuation visual device of single-stage double suction, including single-stage double suction formula centrifugal pump, inlet tube, base, first vacuum pipe, second vacuum pipe, the visual handleless cup of stainless steel, vacuum pump unit and monitoring devices, the single-stage double suction formula centrifugal pump is located on the base, the inlet tube is located on the single-stage double suction formula centrifugal pump, in the exhaust port was located through threaded connection to first vacuum pipe, the visual handleless cup one end of stainless steel was located on the first vacuum pipe other end through threaded connection, second vacuum pipe one end was located on the visual handleless cup other end of stainless steel through threaded connection, vacuum pump unit locates on the second vacuum pipe other end, monitoring devices locates on the base lateral wall. The utility model relates to a machine-building technical field specifically provides a simple structure carries out the visual device of single-stage double suction horizontal centrifugal pump evacuation that observes immediately to the water pump vacuum formation condition.

Description

Single-stage double-suction horizontal centrifugal pump vacuum pumping visual device

Technical Field

The utility model relates to a machine-building technical field specifically is a visual device of horizontal centrifugal pump evacuation of single-stage double suction.

Background

The centrifugal pump is used for conveying and lifting liquid under the action of centrifugal force generated when an impeller rotates, is common to large and medium-sized pump stations in the water conservancy department and is used for agricultural irrigation and drainage of stagnant water; before pumping water, the centrifugal pump must fill the pump body with water or pump air in the pump body to form vacuum in advance, otherwise, the water pump cannot pump water; most pump stations of irrigation units are semi-submerged pump stations, air in a centrifugal pump body is firstly pumped out by utilizing a water ring vacuum pump connecting pipeline before a water pump runs, whether vacuum is formed or not is difficult to judge, common methods include sound listening, pipeline touching, bubble amount on the water outlet side of a water ring vacuum pump and the like, the method is original and can be identified by enough experience, and when the experience is insufficient or the judgment is not accurate, the condition that the vacuum of the centrifugal pump is not formed well or even is not formed can be caused, and a lot of troubles are brought to pump station workers; in addition, when the pump station receives a scheduling instruction and needs to start the water pump, starting and pumping water are often limited, if vacuum cannot be formed within a specified time, starting time is delayed or the water pump cannot be started normally, the water distribution and water consumption unit of system engineering is affected, even more, accidents such as channel overflow and the like occur, and certain economic loss is caused.

SUMMERY OF THE UTILITY MODEL

To the above-mentioned condition, for overcoming current technical defect, the utility model provides a simple structure carries out the visual device of single-stage double suction horizontal centrifugal pump evacuation that observes immediately to the water pump vacuum formation condition.

The utility model adopts the following technical scheme: a single-stage double-suction horizontal centrifugal pump vacuum pumping visual device comprises a single-stage double-suction centrifugal pump, a water inlet pipe, a base, a first vacuum pipeline, a second vacuum pipeline, a stainless steel visual cup, a vacuum pump device and a monitoring device, wherein the single-stage double-suction centrifugal pump is arranged on the base, the water inlet pipe is arranged on the single-stage double-suction centrifugal pump, a first internal thread group is arranged in an exhaust port at the top end of the single-stage double-suction centrifugal pump, the first vacuum pipeline is connected in the exhaust port through threads, a first external thread group is arranged on the outer side wall of the other end of the first vacuum pipeline, an inspection cavity with openings at two ends is arranged in the stainless steel visual cup, second thread groups are arranged at two ends of the inspection cavity, one end of the stainless steel visual cup is connected in the other end of the first vacuum pipeline through threads, one end of the second vacuum pipeline is connected in the other end of the stainless steel visual cup through threads, the vacuum pump device is arranged at the other end of the second vacuum pipeline, and the monitoring device is arranged on the side wall of the base; the monitoring device comprises a support frame, a warning lamp, an indicator lamp, a water level sensor and a controller, wherein the support frame is arranged on a base, the warning lamp, the indicator lamp and the water level sensor are all arranged on the side wall of the support frame, the controller is arranged on the side wall of the support frame, a detection probe of the water level sensor is arranged in an exhaust pipeline, the water level sensor is electrically connected with the controller, and the warning lamp and the indicator lamp are both electrically connected with the controller; the vacuum pump device comprises a main vacuum pipeline, a water ring vacuum pump, a water supply pipeline and an exhaust pipeline, wherein one end of the main vacuum pipeline is arranged on the second vacuum pipeline, an air suction port of the water ring vacuum pump is arranged at the other end of the main vacuum pipeline, the exhaust pipeline is arranged on an air exhaust port of the water ring vacuum pump, and the water supply pipeline is arranged on the water ring vacuum pump.

Furthermore, one end of the water inlet pipe, which is far away from the single-stage double-suction centrifugal pump, is arranged in an inverted funnel structure.

Furthermore, a filter screen is arranged at one end, away from the single-stage double-suction centrifugal pump, of the water inlet pipe, so that impurities are prevented from entering the single-stage double-suction centrifugal pump and damaging the single-stage double-suction centrifugal pump.

Furthermore, a sealing ring is arranged below the observation window, so that air leakage of the observation window is avoided.

Preferably, the base is a reinforced concrete base.

Adopt above-mentioned structure the utility model discloses the beneficial effect who gains as follows: according to the visual vacuum pumping device of the single-stage double-suction horizontal centrifugal pump, the formation condition of the visual vacuum pumping device of the single-stage double-suction horizontal centrifugal pump to the vacuum degree of the single-stage double-suction centrifugal pump is realized through the cooperation of the stainless steel visual cup and the monitoring device, water flows pass through the visual vacuum pumping device, the single-stage double-suction centrifugal pump is indicated to be formed in vacuum, the visual vacuum pumping device can be started to run, the stability and the quality of vacuum formation are guaranteed, and basic conditions are provided for starting the single-stage double-suction centrifugal pump; secondly, a water pump worker can observe the water pump by using a stainless steel visual cup, the time for forming the vacuum of the centrifugal pump with different liquid levels is counted according to the liquid level of the water inlet tank, and a forming time parameter provides a technical basis for the vacuum pumping of the centrifugal pump; the vacuum pumping visual device of the single-stage double-suction horizontal centrifugal pump can evacuate air in the single-stage double-suction centrifugal pump body.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 is a schematic front view of a single-stage double-suction horizontal centrifugal pump vacuum pumping visual device of the present invention;

fig. 2 is a schematic structural view of a stainless steel visual cup of the single-stage double-suction horizontal centrifugal pump vacuum pumping visual device of the present invention.

The device comprises a single-stage double-suction centrifugal pump 1, a single-stage double-suction centrifugal pump 2, a water inlet pipe 3, a base 4, a first vacuum pipeline 5, a second vacuum pipeline 6, a stainless steel visual cup 7, a vacuum pump device 8, a monitoring device 9, an inspection cavity 10, a second thread group 11, a first control valve 12, a second control valve 13, an observation window 14, a sealing ring 15, a warning lamp 16, an indicator lamp 17, a water level sensor 18, a controller 19, a main vacuum pipeline 20, a water ring vacuum pump 21, a water supply pipeline 22, an exhaust pipeline 23, a filter screen 24 and a support frame.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the 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; 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 should be noted that the terms "front," "back," "left," "right," "upper" and "lower" used in the following description refer to directions in the drawings, and the terms "inner" and "outer" refer to directions toward and away from, respectively, the geometric center of a particular component.

As shown in figures 1-2, the utility model adopts the following technical scheme: a single-stage double-suction horizontal centrifugal pump vacuum pumping visual device comprises a single-stage double-suction centrifugal pump 1, a water inlet pipe 2, a base 3, a first vacuum pipeline 4, a second vacuum pipeline 5, a stainless steel visual cup 6, a vacuum pump device 7 and a monitoring device 8, wherein the single-stage double-suction centrifugal pump 1 is arranged on the base 3, the water inlet pipe 2 is arranged on the single-stage double-suction centrifugal pump 1, a first internal thread group is arranged in an exhaust port at the top end of the single-stage double-suction centrifugal pump 1, the first vacuum pipeline 4 is arranged in the exhaust port through threaded connection, a first external thread group is arranged on the outer side wall of the other end of the first vacuum pipeline 4, an inspection cavity 9 with two open ends is arranged in the stainless steel visual cup 6, second thread groups 10 are arranged at two ends of the inspection cavity 9, one end of the stainless steel visual cup 6 is arranged on the other end of the first vacuum pipeline 4 through threaded connection, one end of the second vacuum pipeline 5 is connected with the other end of the stainless steel visual cup 6 through threads, the vacuum pump device 7 is arranged at the other end of the second vacuum pipeline 5, and the monitoring device 8 is arranged on the side wall of the base 3; the first vacuum pipeline 4 is provided with a first control valve 11, the second vacuum pipeline 5 is provided with a second control valve 12, the top end of the stainless steel visual cup 6 is provided with an observation window 13, the monitoring device 8 comprises a support frame 24, a warning lamp 15, an indicator lamp 16, a water level sensor 17 and a controller 18, the support frame 24 is arranged on the base 3, the warning lamp 15, the indicator lamp 16 and the water level sensor 17 are all arranged on the side wall of the support frame 24, the controller 18 is arranged on the side wall of the support frame 24, a detection probe of the water level sensor 17 is arranged in the exhaust pipeline 2, the water level sensor 17 is electrically connected with the controller 18, and the warning lamp 15 and the indicator lamp 16 are both electrically connected with the controller 18; the vacuum pump device 7 comprises a main vacuum pipeline 19, a water ring vacuum pump 20, a water supply pipeline 21 and an exhaust pipeline 22, one end of the main vacuum pipeline 19 is arranged on the second vacuum pipeline 5, the air suction port of the water ring vacuum pump 20 is arranged at the other end of the main vacuum pipeline 19, the exhaust pipeline 22 is arranged on the exhaust port of the water ring vacuum pump 20, and the water supply pipeline 21 is arranged on the water ring vacuum pump 20.

Wherein, the one end that the inlet tube 2 kept away from single-stage double suction centrifugal pump 1 is the setting of inversion funnel structure. One end of the water inlet pipe 2, which is far away from the single-stage double-suction centrifugal pump 1, is provided with a filter screen 23, so that impurities are prevented from entering the single-stage double-suction centrifugal pump 1 and damaging the single-stage double-suction centrifugal pump 1. And a sealing ring 14 is arranged below the observation window 13, so that the air leakage of the observation window 13 is avoided. The base 3 is a reinforced concrete base.

When the device is used specifically, one end of a water inlet pipe 2 is placed in a water inlet pool, the device is placed in a working area, a reinforced concrete base is fixed by four pre-embedded foundation bolts, when a pumping station worker receives a dispatching instruction to start the single-stage double-suction centrifugal pump 1, the single-stage double-suction centrifugal pump 1 is started firstly, clean water is supplied to a packing of the single-stage double-suction centrifugal pump 1 for water lubrication and cooling, then a first control valve 11 and a second control valve 12 are started, then a water ring vacuum pump 20 is started, air in the single-stage double-suction centrifugal pump 1 is pumped and exhausted through a first vacuum pipeline 4 and a second vacuum pipeline 5 by the water ring vacuum pump 20, the air in the single-stage double-suction centrifugal pump 1 enters the water ring vacuum pump 20 along with the first vacuum pipeline 4 and the second vacuum pipeline 5 and is continuously exhausted out of the water ring vacuum pump 20 through an exhaust pipeline 22, and after the air in the single-stage double-suction centrifugal pump 1 is pumped and exhausted, the liquid in the water inlet tank enters the single-stage double-suction centrifugal pump 1 through the filter screen 23 under the action of atmospheric pressure for filtration until the pump body of the single-stage double-suction centrifugal pump 1 is filled with water to form vacuum; water enters the stainless steel visual cup 6, when the vacuum is completely formed, the inside of the stainless steel visual cup 6 is filled with water, the water level sensor 17 monitors the water inside the exhaust pipeline 22, the water level sensor 17 provides information for the controller 18, the controller 18 is internally provided with set data, when a certain liquid height is reached, the exhaust pipeline 22 does not exhaust any more and a large amount of water is discharged, the fact that the inside of the stainless steel visual cup 6 is filled with the liquid is represented, the controller 18 controls the warning lamp 15, the warning lamp 15 gives an alarm, and a pumping station worker can normally open the single-stage double-suction centrifugal pump 1 according to the opening operation flow of the single-stage double-suction centrifugal pump 1; when water does not enter the stainless steel visual cup 6, the air is exhausted from the exhaust pipeline 22 all the time, the indicator lamp 16 is controlled by the controller 18, the indicator lamp 16 is lighted, if the stainless steel visual cup 6 does not pass through water flow in the normal vacuum forming time, the fault of the vacuum system is described, whether the first vacuum pipeline 4 and the second vacuum pipeline 5 are blocked, whether the packing of the single-stage double-suction centrifugal pump 1 is well sealed, whether the water supply system of the water ring vacuum pump 20 is normal and other common problems can be checked in advance, if the vacuum is still incapable of forming, further checking is needed, whether metal components such as the single-stage double-suction centrifugal pump 1, the water inlet pipe 2, the single-stage double-suction centrifugal pump 1 are blocked or leaked, whether the vacuum system is blocked or leaked, whether the clear water system works normally, whether the water ring vacuum pump 20 is normal and other problems can be checked.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a visual device of horizontal centrifugal pump evacuation of single-stage double suction which characterized in that: the device comprises a single-stage double-suction centrifugal pump, a water inlet pipe, a base, a first vacuum pipeline, a second vacuum pipeline, a stainless steel visual cup, a vacuum pump device and a monitoring device, wherein the single-stage double-suction centrifugal pump is arranged on the base, the water inlet pipe is arranged on the single-stage double-suction centrifugal pump, a first internal thread group is arranged in an exhaust port at the top end of the single-stage double-suction centrifugal pump, the first vacuum pipeline is arranged in the exhaust port through threaded connection, a first external thread group is arranged on the outer side wall of the other end of the first vacuum pipeline, an inspection cavity with two open ends is arranged in the stainless steel visual cup, second thread groups are arranged at the two ends of the inspection cavity, one end of the stainless steel visual cup is arranged on the other end of the first vacuum pipeline through threaded connection, one end of the second vacuum pipeline is arranged on the other end of the stainless steel visual cup through threaded connection, the vacuum pump device is arranged on the other end of the second vacuum pipeline, the monitoring device is arranged on the side wall of the base; the monitoring device comprises a support frame, a warning lamp, an indicator lamp, a water level sensor and a controller, wherein the support frame is arranged on a base, the warning lamp, the indicator lamp and the water level sensor are all arranged on the side wall of the support frame, the controller is arranged on the side wall of the support frame, a detection probe of the water level sensor is arranged in an exhaust pipeline, the water level sensor is electrically connected with the controller, and the warning lamp and the indicator lamp are both electrically connected with the controller; the vacuum pump device comprises a main vacuum pipeline, a water ring vacuum pump, a water supply pipeline and an exhaust pipeline, wherein one end of the main vacuum pipeline is arranged on the second vacuum pipeline, an air suction port of the water ring vacuum pump is arranged at the other end of the main vacuum pipeline, the exhaust pipeline is arranged on an air exhaust port of the water ring vacuum pump, and the water supply pipeline is arranged on the water ring vacuum pump.

2. The visual device of single-stage double-suction horizontal centrifugal pump vacuum of claim 1, wherein: the one end that single-stage double suction centrifugal pump was kept away from to the inlet tube is the setting of inversion funnel structure.

3. The visual device of single-stage double-suction horizontal centrifugal pump vacuum of claim 2, wherein: and a filter screen is arranged at one end of the water inlet pipe, which is far away from the single-stage double-suction centrifugal pump.

4. The visual device of single-stage double-suction horizontal centrifugal pump vacuum of claim 1, wherein: and a sealing ring is arranged below the observation window.

5. The visual device of single-stage double-suction horizontal centrifugal pump vacuum of claim 1, wherein: the base is a reinforced concrete base.