Squirrel-cage type underwater pump hanging bracket

Abstract

The utility model belongs to a drag suction dredger, and particularly discloses a squirrel-cage type underwater pump hanging bracket. The squirrel-cage type underwater pump hanging bracket is provided with a hollow cavity, the upper end of the hollow cavity is communicated with the outside through an opening part, a pump body can penetrate through the opening part to enter the hollow cavity, the two ends of the pump hanging bracket are the first pipeline connecting end and the second pipeline connecting end respectively, and the first pipeline connecting end and the second pipeline connecting end are both communicated with the hollow cavity. The front end of the pump hanger is a conical part, the outer diameter of the conical part is gradually increased from one end provided with the second pipeline connecting end to the other end, a plurality of hollow holes are formed in the outer wall of the conical part, and the outer diameter of the rear portion of the pump hanger body is gradually increased from the rear end to the middle. A gear box is omitted, the underwater pump is directly driven by the motor, the underwater pump hanging bracket adopts a hollow design, is similar to a mousetrap and adopts a front-back conical design to reduce water flow resistance, the self weight of a rake arm is reduced, meanwhile, the phenomenon of turbulent water flow during dredging is optimized, and the loading capacity of a single ship is increased under the condition that the dredging draft of the ship is designed to be fixed. By means of the design, the building cost of the ship is reduced, the use failure rate is reduced, the dredging efficiency is improved, and economic benefits are improved.

Description

Technical Field

[0001] The utility model belongs to a trailing suction dredger, in particular to a squirrel cage type underwater pump hanger. Background Art

[0002] Usually, the underwater pump of a trailing suction hopper dredger is driven by an underwater motor through a gearbox, which involves the combination, arrangement and protection of three devices. The underwater power equipment must be waterproof, shock-resistant and impact-resistant. The lubricating oil, hydraulic oil pipelines, cables, sensors, etc. on the equipment are compactly arranged and require a high-strength structure as a supporting carrier. Therefore, traditional trailing suction hopper dredgers with underwater pumps all have a huge underwater pump hanger (such as Figure 3 The advantage of this type is that it has a good protection effect on underwater pumps and other equipment, but the disadvantages are also very obvious. It increases the weight of the ship and the burden on the oil cylinder in the rake. At the same time, due to its large size and relatively square shape, it generates greater resistance during underwater operations, disrupting the water flow and affecting the dredging effect. The impact is even greater when the ship turns around and turns, and it will hit the hull when the swell is large. Utility Model Content

[0003] In order to solve the above problems, the utility model provides the following solutions:

[0004] The squirrel cage submersible pump hanger has a hollow cavity, and the upper end of the hollow cavity communicates with the outside through an opening, and the pump body can pass through the opening into the hollow cavity.

[0005] The two ends of the pump hanger are respectively a first pipe connection end and a second pipe connection end, and the first pipe connection end and the second pipe connection end are both connected to the hollow cavity.

[0006] The front end of the pump hanger is a tapered portion, the outer diameter of which gradually increases from one end where the second pipe connection end is provided to the other end, the outer wall of the tapered portion is provided with a plurality of hollow holes, and the outer diameter of the rear part of the pump hanger body gradually increases from the rear end to the middle part.

[0007] In some embodiments, the outer shell of the conical portion has an axial skeleton and an arc-shaped skeleton arranged around the axial skeleton, the two ends of the axial skeleton are respectively connected to the pump hanger body and the second pipeline connection end, and the arc-shaped skeleton is an arc-shaped structure.

[0008] In some embodiments, a shell skin is arranged outside the axial frame and the arc-shaped frame.

[0009] In some embodiments, a mounting arm is provided at the upper end of the pump hanger body.

[0010] In some embodiments, the pump hanger has a first hanger and a second hanger at both ends respectively.

[0011] In some embodiments, the side wall of the pump hanger body also has a hollow hole.

[0012] The beneficial effects of the utility model are:

[0013] The gearbox is omitted, and the submerged pump is driven directly by the motor. The submerged pump hanger adopts a hollow design, which is shaped like a mousetrap. The front and rear conical design reduces the water flow resistance, which not only reduces the deadweight of the rake arm, but also optimizes the turbulent flow phenomenon during dredging. The single ship loading capacity of the ship is increased when the designed dredging draft is fixed. This design also reduces the construction cost of the ship, reduces the failure rate in use, improves the dredging efficiency, and improves the economic benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a three-dimensional structural diagram of the utility model;

[0015] Figure 2 This is a partial disassembled state diagram of the utility model;

[0016] Figure 3 The figure is a schematic diagram of the structure of the underwater pump hanger which is equipped on conventional trailing suction dredgers with underwater pumps. DETAILED DESCRIPTION

[0017] The utility model is described in detail below with reference to the accompanying drawings:

[0018] The squirrel cage submersible pump hanger has a hollow cavity 110, and the upper end of the hollow cavity 110 communicates with the outside through an opening, and the pump body can pass through the opening into the hollow cavity 110.

[0019] The two ends of the pump hanger are respectively a first pipe connection end 111 and a second pipe connection end 210, and both the first pipe connection end 111 and the second pipe connection end 210 are connected to the hollow cavity 110.

[0020] The front end of the pump hanger is a conical part 200, the outer diameter of the conical part 200 gradually increases from one end with the second pipe connection end 210 to the other end, the outer wall of the conical part 200 is provided with a plurality of hollow holes 220, and the outer diameter of the rear part of the pump hanger body gradually increases from the rear end to the middle part. The double cone head shape at both ends of the pump hanger is more in line with fluid mechanics and reduces water flow resistance.

[0021] The outer ends of the first pipe connection end 111 and the second pipe connection end 210 are respectively used to connect pipes, and the specific connected pipes can be adjusted and selected according to the working conditions. The pump hanger is used to set a motor to drive the underwater pump.

[0022] Reducing the gearbox settings eliminates the need for complex piping, bases, control cables, sensors, etc., reduces the failure rate, facilitates use and maintenance, and also reduces the cost of the ship.

[0023] The specific solutions available for some of the components are as follows:

[0024] The outer shell of the conical part 200 has an axial skeleton 240 and an arc skeleton 250 arranged around the axial skeleton 240. The two ends of the axial skeleton 240 are respectively connected to the pump hanger body and the second pipe connection end 210, and the arc skeleton 250 is an arc structure. The amount of steel used is reduced, the volume is small, the structural strength is sufficient, the weight of the whole rake is greatly reduced, and the impact on the maneuverability of the ship is reduced. Similarly, the pump hanger body can also be covered with a skin in the form of a frame structure. The pump hanger body at the location of the first pipe connection end 111 is composed of a radial skeleton and a circular skeleton. In most cases, the circular skeleton is perpendicular to the axis of the hanger.

[0025] The axial skeleton 240 and the arc-shaped skeleton 250 are provided with a shell skin outside, which not only ensures the structural strength of the product but also reduces the weight of the hanger. The axial skeleton 240 and the arc-shaped skeleton 250 can also be provided with a skin inside to form the chamber wall of the hollow cavity 110.

[0026] Wherein, a mounting arm 120 is provided at the upper end of the pump hanger body.

[0027] The two ends of the pump hanger are respectively provided with a first hanger 130 and a second hanger 230 , and both the first hanger 130 and the second hanger 230 can be lifting rings.

[0028] The side wall of the pump hanger body also has a hollow hole 220 .

[0029] like Figure 1 In the embodiment, the first pipe connection end 111 and the second pipe connection end 210 both have a cylindrical channel tube that penetrates the side wall of the hanger. The cylindrical channel tube is used to connect the hollow cavity 110 and other pipe bodies, and the cylindrical channel tube is mainly located in the side wall of the hanger to form a channel. The outer edge of the cylindrical channel tube has an annular flange to facilitate docking with other pipes. The cylindrical channel tube is connected to the arc-shaped skeleton 250 (or annular skeleton) and / or the axial skeleton 240. At this time, the cylindrical channel tube is also called the inner wall of the hanger at this part. Figure 2 As shown in the figure, the axial skeleton 240 can be connected to the outer edge of the cylindrical channel tube with an annular flange, and then the annular flange at the inner end of the cylindrical channel tube can be connected to the arc skeleton 250 (or circular skeleton), and can be connected to the internal skin when necessary, so that the cylindrical channel tube is combined with other keels of the hanger, which not only ensures the structural strength, but also makes the channels at both ends of the first pipe connecting end 111 and the second pipe connecting end 210 smoother.

[0030] It is clear to those skilled in the art that any existing technology not specifically or specifically described herein may be used, and various modifications to the above embodiments may be made without departing from the overall spirit and concept of the present invention. All of these modifications fall within the scope of protection of the present invention. The protection scheme of the present invention shall be subject to the claims attached to the present invention.

Claims

1. Squirrel cage submersible pump hanger, characterized in that: It has a hollow cavity (110), and the upper end of the hollow cavity (110) is connected to the outside through an opening, and the pump body can pass through the opening and enter the hollow cavity (110). The two ends of the pump hanger are respectively a first pipe connection end (111) and a second pipe connection end (210), and both the first pipe connection end (111) and the second pipe connection end (210) are in communication with the hollow cavity (110). The front end of the pump hanger is a conical portion (200), the outer diameter of the conical portion (200) gradually increases from one end provided with the second pipe connection end (210) to the other end, and the outer wall of the conical portion (200) is provided with a plurality of hollow holes (220). The outer diameter of the rear part of the pump hanger body gradually increases from the rear end to the middle part.

2. The squirrel cage submersible pump hanger according to claim 1, characterized in that: The outer shell of the conical portion (200) comprises an axial skeleton (240) and an arc-shaped skeleton (250) arranged around the axial skeleton (240), the two ends of the axial skeleton (240) are respectively connected to the pump hanger body and the second pipe connection end (210), and the arc-shaped skeleton (250) is an arc-shaped structure.

3. The squirrel cage submersible pump hanger according to claim 2, characterized in that: The axial skeleton (240) and the arc-shaped skeleton (250) are provided with a shell skin outside.

4. The squirrel cage submersible pump hanger according to claim 2, characterized in that: A mounting arm (120) is provided at the upper end of the pump hanger body.

5. The squirrel cage submersible pump hanger according to claim 1, characterized in that: The two ends of the pump hanger are respectively provided with a first hanger (130) and a second hanger (230).

6. The squirrel cage submersible pump hanger according to claim 1, characterized in that: The side wall of the pump hanger body also has a hollow hole (220).

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