CN217029202U

CN217029202U - Low-pressure drainage pump for power station

Info

Publication number: CN217029202U
Application number: CN202120969291.0U
Authority: CN
Inventors: 张东华; 徐光学; 王厚军; 王洋; 付琳; 伍献民
Original assignee: Anhui Huadian Wuhu Power Generation Co ltd
Current assignee: Anhui Huadian Wuhu Power Generation Co ltd
Priority date: 2021-05-07
Filing date: 2021-05-07
Publication date: 2022-07-22
Anticipated expiration: 2031-05-07

Abstract

The utility model discloses a low pressure booster drainage pump for a power station, which comprises a base, a driving motor and a drainage pump, wherein the driving motor is arranged on one side edge of the base through a first mounting block, the drainage pump is arranged on the other side edge of the base through a second mounting block group, a first rotating shaft of the driving motor is connected with a second rotating shaft of the drainage pump through a coupler, the drainage pump is provided with a water inlet pipe and a water outlet pipe, the water inlet pipe and the water outlet pipe are both connected with an external pipeline through a sealing connecting piece, a drainage turbine structure is arranged on the second rotating shaft in the drainage pump, a boosting cavity is arranged at the front end of the drainage pump, and a boosting fan structure is arranged on the second rotating shaft at the port position of the boosting cavity. The booster fan structure of the utility model can pressurize the front end of the hydrophobic pump to a certain extent, reduce the pressure difference inside and outside the front end of the hydrophobic pump and reduce the water leakage phenomenon; and the ring is clamped in the ring groove, so that the sealing effect is greatly improved, and water leakage at the position of a connecting pipeline is reduced.

Description

Low-pressure drainage pump for power station

Technical Field

The utility model relates to the technical field of drainage pumps, in particular to a low pressure-increasing drainage pump for a power station.

Background

It reduces hydrophobic thermal loss to use at the power plant often to use low drainage pump that adds, improves thermal circulation efficiency for the operation of whole mill is energy-conserving economy more, but, current low drainage pump that adds when with the pipe connection, the leakproofness of junction is lower, and when connecting bolt harm or bolt fastening are not hard up, the water pump body easily breaks away from with the connecting pipe, and the removal and the installation of water pump body are comparatively inconvenient. Besides, the drain pump works for a long time, and the front end of the drain pump is easy to leak water under the pressurization effect. And the motor is utilized to drive the rotating shaft of the drainage pump, so that the problem of abrasion caused by vibration can occur for a long time.

SUMMERY OF THE UTILITY MODEL

The present invention is directed to solving, at least in part, one of the technical problems in the related art. Therefore, the utility model aims to provide a low-pressure-rise drainage pump for a power station, and solves the problems that the low-pressure-rise drainage pump is easy to leak water after long service time, poor in sealing performance when a pipeline is externally connected and the like.

The low-pressure-increase drainage pump for the power station comprises a base, a driving motor and a drainage pump, wherein the driving motor is installed on one side edge of the base through a first installation block, the drainage pump is installed on the other side edge of the base through a second installation block group, a first rotating shaft of the driving motor is connected with a second rotating shaft of the drainage pump through a coupler, a water inlet pipe and a water outlet pipe are arranged on the drainage pump, the water inlet pipe and the water outlet pipe are both connected with an external pipeline through a sealing connecting piece, a drainage turbine structure is arranged on the second rotating shaft in the drainage pump, a boosting cavity is arranged at the front end of the drainage pump, a boosting fan structure is arranged on the second rotating shaft at the port position of the boosting cavity, and the second rotating shaft is fixed through a first sealing piece and a second sealing piece and is respectively installed at the front end and the rear end of the drainage pump.

In some embodiments of the present invention, the pressurizing cavity is a hollow cylinder, and one end of the pressurizing cavity is fixed at the front end of the drainage pump through a bolt and a nut.

In other embodiments of the present invention, the booster fan structure includes a booster fan blade and a fan blade fixing ring, the fixing ring is sleeved on an outer end of the booster fan blade, and a gap is left between the fan blade fixing ring and an inner wall of the cylinder.

In other embodiments of the present invention, the sealing connector includes a first mounting plate and a second mounting plate, the first mounting plate is fixed at the end portions of the water inlet pipe and the water outlet pipe, the second mounting plate is fixed at the end portion of the external connection pipe, the first mounting plate is provided with a raised ring, the bottom surface of the second mounting plate is provided with a ring groove matched with the ring, and the first mounting plate and the second mounting plate are correspondingly provided with bolt holes matched with each other.

In other embodiments of the present invention, the ring groove is lined with a rubber ring.

In other embodiments of the present invention, a first bearing and a second bearing are respectively sleeved on the first rotating shaft and the second rotating shaft, and both the first bearing and the second bearing are fixed on the base through a bearing fixing frame.

According to the utility model, by utilizing the booster fan structure in the booster cavity, when the second rotating shaft is rotated, the booster fan structure can pressurize the front end of the drainage pump to a certain extent, so that the pressure difference between the inside and the outside of the front end of the drainage pump is reduced, and the water leakage phenomenon is reduced; and the ring card is in the annular, when buckling first mounting disc and second mounting disc, greatly increases sealed effect, when reducing to draw water, leaks at the connecting tube position.

Drawings

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

fig. 1 is a schematic structural diagram of a low-pressure drainage pump for a power station according to the present invention.

Fig. 2 is a schematic structural diagram of a booster fan structure according to the present invention.

Fig. 3 is a schematic structural view of the sealing connector according to the present invention.

In the figure: 1. a base; 2. a first mounting block; 21. a drive motor; 211. a first rotating shaft; 3. a bearing fixing frame; 31. a first bearing; 32. a second bearing; 4. a second mounting block set; 5. a coupling; 6. a pressurizing cavity; 61. a booster fan structure; 611. a fan blade fixing ring; 612. a booster fan blade; 7. a drain pump; 70. a hydrophobic turbine structure; 71. a second rotating shaft; 72. a water inlet pipe; 73. a water outlet pipe; 74. (ii) a 8. Bolts and nuts; 9. a first mounting plate; 90. bolt holes; 91. a loop; 10. a second mounting plate; 101. and a ring groove.

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 a part of the embodiments of the present invention, and not all of the embodiments.

Examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the utility model and are not to be construed as limiting the utility model.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the utility model and to simplify the description, but are not intended to indicate or imply that the device or element so referred to must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and are not to be construed as limiting the utility model.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

Referring to fig. 1 to 3, a low pressure drainage pump for a power station includes a base 1, a driving motor 21 and a drainage pump 7, the driving motor 21 is arranged on one side edge of the base 1 through the first mounting block 2, the drain pump 7 is arranged on the other side edge of the base 1 through the second mounting block group 4, the first rotating shaft 211 of the driving motor 21 is connected with the second rotating shaft 71 of the drainage pump 7 through a coupling 5, the drain pump 7 is provided with a water inlet pipe 72 and a water outlet pipe 73, the water inlet pipe 72 and the water outlet pipe 73 are both connected with an external pipeline through a sealing connecting piece, a water drainage turbine structure 70 is arranged on a second rotating shaft 71 in the water drainage pump 7, the water drainage pump 7 is provided with a pressurizing cavity 6 at the front end thereof, a booster fan structure 61 is mounted on the second rotating shaft 71 at the port position of the booster cavity 6, the second rotating shaft 71 is fixed by a first seal 74 and a second seal 75 and is installed at the front end and the rear end of the drain pump 7, respectively.

Firstly, the driving motor 21 and the drainage pump 7 are connected by a coupler and then installed on the base 1, before the coupler 5 is installed, the pressurizing cavity is installed at the front end of the drainage pump 7, and then the pressurizing fan structure 61 is sleeved on the second rotating shaft 71 and is positioned at the port position of the pressurizing cavity 6. Then, the external pipe is connected to the water inlet pipe 72 and the water outlet pipe 73 through the sealing connection. And a rear seat seal 751 is further provided at the rear end of the drain pump 7.

The pressurizing cavity 6 is a hollow cylinder, and one end of the pressurizing cavity 6 is fixed at the front end of the drain pump 7 through a bolt and a nut 8. The pressurizing cavity 6 is detachably arranged at the front end of the drain pump 7, the pressurizing cavity 6 is provided with ear buckles, the drain pump 7 is also provided with ear buckles, and the ear buckles are fixed through bolts and nuts.

The supercharging fan structure 61 comprises a supercharging fan blade 612 and a fan blade fixing ring 611, the fixing ring 611 is sleeved on the outer end of the supercharging fan blade 612, and a gap is reserved between the fan blade fixing ring 611 and the inner wall of the cylinder. The rotating supercharging fan blade 612 can supercharge the supercharging cavity 6 to generate pressure greater than air pressure at the position of the rotating shaft of the drainage pump, so that the pressure difference between the supercharging cavity 6 and the pressure in the drainage pump 7 is reduced. The water leakage phenomenon caused by long-term operation of the drainage pump is reduced. The service life of the sealing structure at the front end of the steam trap 7 is prolonged.

Sealing connecting piece includes first mounting disc 9 and second mounting disc 10, the tip at inlet tube 72 and outlet pipe 73 is fixed to first mounting disc 9, the tip at the outer takeover is fixed to second mounting disc 10, be equipped with bellied ring 91 on the first mounting disc 9, second mounting disc 10 bottom surface is equipped with the annular 101 that matches with ring 91, correspond on first mounting disc 9 and the second mounting disc 10 and be equipped with the bolt hole 90 of mutual matching.

Detain second mounting disc 10 on first mounting disc 9 for ring 91 card is in annular 101, greatly improves the leakproofness, reduces the phenomenon of leaking.

A rubber ring is padded in the ring groove 101. The rubber ring further improves the sealing property.

The first bearing 31 and the second bearing 32 are respectively sleeved on the first rotating shaft 211 and the second rotating shaft 71, and both the first bearing 31 and the second bearing 32 are fixed on the base 1 through the bearing fixing frame 3.

The bearing can reduce the swinging of the first rotating shaft 211 and the second rotating shaft 71, and can also solve the vibration problem caused by the rotation of the driving motor, thereby improving the water leakage phenomenon of the sealing element caused by the rotation of the rotating shaft of the drain pump 7.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "above," and "over" a second feature may be directly on or obliquely above the second feature, or simply mean that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and equivalent alternatives or modifications according to the technical solution of the present invention and the inventive concept thereof should be covered by the scope of the present invention.

Claims

1. The utility model provides a low drainage pump that adds that power station used which characterized in that: comprises a base (1), a driving motor (21) and a drainage pump (7), wherein the driving motor (21) is arranged on one side edge of the base (1) through a first mounting block (2), the drainage pump (7) is arranged on the other side edge of the base (1) through a second mounting block group (4), a first rotating shaft (211) of the driving motor (21) is connected with a second rotating shaft (71) of the drainage pump (7) through a coupler (5), the drainage pump (7) is provided with a water inlet pipe (72) and a water outlet pipe (73), the water inlet pipe (72) and the water outlet pipe (73) are both connected with an external pipeline through a sealing connector, a drainage turbine structure (70) is arranged on the second rotating shaft (71) in the drainage pump (7), the drainage pump (7) is provided with a pressurizing cavity (6) at the front end thereof, and a pressurizing fan structure (61) is arranged on the second rotating shaft (71) at the port position of the pressurizing cavity (6), the second rotating shaft (71) is fixed through a first sealing piece (74) and a second sealing piece (75) and is respectively arranged at the front end and the rear end of the drain pump (7).

2. A low plus hydrophobic pump for a power plant according to claim 1, characterized in that: the booster cavity (6) is a hollow cylinder, and one end of the booster cavity (6) is fixed at the front end of the drain pump (7) through a bolt and a nut (8).

3. A low plus hydrophobic pump for a power plant according to claim 2, characterized in that: the supercharging fan structure (61) comprises a supercharging fan blade (612) and a fan blade fixing ring (611), the fixing ring (611) is sleeved on the outer end of the supercharging fan blade (612), and a gap is reserved between the fan blade fixing ring (611) and the inner wall of the cylinder.

4. A low plus drain pump for a power plant according to claim 1, characterized in that: sealing connecting piece includes first mounting disc (9) and second mounting disc (10), the tip at inlet tube (72) and outlet pipe (73) is fixed in first mounting disc (9), the tip of takeover is fixed in second mounting disc (10), be equipped with bellied ring (91) on first mounting disc (9), second mounting disc (10) bottom surface is equipped with annular (101) that match with ring (91), correspond bolt hole (90) that are equipped with mutual matching on first mounting disc (9) and second mounting disc (10).

5. The low plus hydrophobic pump for a power plant of claim 4, characterized in that: and a rubber ring is padded in the annular groove (101).

6. A low plus drain pump for a power plant according to claim 1, characterized in that: first bearing (31) and second bearing (32) are respectively sleeved on first pivot (211) and second pivot (71), first bearing (31) and second bearing (32) are all fixed on base (1) through bearing mount (3).