Installation device in cable-stayed submersible pump pipeline

Abstract

The utility model discloses an installation device in a cable-stayed submersible pump pipeline, which relates to the field of water taking devices and comprises a shaft component and a submersible pump slidably installed in the shaft component, a slope coupling flange is arranged at the water inlet end of the submersible pump, and a slope coupling plate matched with the slope coupling flange is arranged at the bottom of the shaft component. The inclined plane coupling flange and the inclined plane coupling plate are sealed through an O-shaped sealing ring; two guide strips extending in the axial direction of the shaft assembly are symmetrically and fixedly arranged on the lower portion of the inner wall of the shaft assembly. Two or more pump truck assemblies are axially installed on the submersible pump shell at intervals, each pump truck assembly comprises a fixing ring composed of two semicircular split frames, the fixing ring is provided with at least two wheel assemblies, the two wheel assemblies are located in a circumferential area between the two guide strips, and the wheel assemblies are limited through the guide strips. Reliable sealing during operation of the submersible pump is achieved, smooth movement of the submersible pump in a pipeline is guaranteed, and the problem that a traditional pump truck is prone to being blocked is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of water intake devices, in particular to a device for installing an oblique-pull submersible pump in a pipeline. Background Art

[0002] As a key piece of equipment in water conservancy and drainage projects, oblique-pull submersible pumps are widely used in agricultural irrigation, urban drainage, and other scenarios. However, existing oblique-pull submersible pumps suffer from numerous technical deficiencies during operation and installation, limiting their efficiency and adaptability.

[0003] Specifically, the pump wheel of the existing oblique-pull submersible pump is prone to jamming, resulting in the submersible pump not moving smoothly in the pipeline, affecting the convenience of installation and maintenance; the radial size of the pump wheel cannot be adjusted. When there is a slight deformation or unevenness on the inner wall of the pipeline, it is very easy to cause the wheel and the inner wall of the pipeline to get stuck, increasing the risk of equipment failure; at the same time, the axial position of the pump truck components cannot be adjusted, which makes the center of gravity of the unit move forward, making it easy to roll over during movement or operation, threatening the safe operation of the equipment.

[0004] In terms of guide structure design, existing technologies place guide grooves at the top of the pipe (see reference CN214887877U). This not only increases the difficulty of welding within the pipe, but also increases installation costs and construction time. The coupling seal utilizes a flat coupling structure, which makes it difficult to ensure sealing reliability when operating high-lift submersible pumps, leading to water leakage and reduced pump efficiency. Furthermore, existing equipment typically incorporates a set of pump wheels at the bottom of the pipe. This design is not suitable for water discharge conditions below the pipe and can easily cause the wheels to fall into the outlet during operation, causing damage to the equipment and interruption of operation. These issues collectively restrict the overall performance of oblique-pull submersible pumps and urgently require technical improvements to address them. Utility Model Content

[0005] In response to the problems existing in the above-mentioned prior art, the utility model provides a device for installing an oblique-pull submersible pump in a pipeline, which realizes stable installation and operation of the submersible pump in the pipeline through an inclined coupling seal, an adjustable pump truck assembly and a lower guide structure.

[0006] The technical solution adopted by the utility model is as follows: a device for installing an oblique-pull submersible pump in a pipeline, comprising a wellbore assembly and a submersible pump slidably installed in the wellbore assembly, the water inlet end of the submersible pump is provided with a bevel coupling flange, the bottom of the wellbore assembly is provided with a bevel coupling plate matching the bevel coupling flange, the bevel coupling flange and the bevel coupling plate are sealed by an O-ring; two guide strips extending axially along the wellbore assembly are symmetrically fixed on the lower part of the inner wall of the wellbore assembly; more than two groups of pump truck assemblies are axially spaced and installed on the submersible pump housing, the pump truck assembly includes a fixing ring composed of two semicircular split frames, the two split frames are fastened to the submersible pump housing by bolts, at least two wheel assemblies are provided on the fixing ring, the wheel assembly is connected to the split frame through a supporting wheel frame and contacts the inner wall of the wellbore assembly, the two wheel assemblies are located in the circumferential area between the two guide strips, and the wheel assembly is limited by the guide strips to limit the circumferential displacement of the submersible pump when it slides in the wellbore assembly.

[0007] Furthermore, four wheel assemblies are provided on the fixing ring, and the four wheel assemblies are symmetrically distributed at 45° to the vertical direction on the circumferential section of the wellbore assembly. The two guide strips are symmetrically arranged on both sides of the center line of the wellbore assembly, and the angle between their installation position and the vertical direction is greater than 45°.

[0008] Furthermore, a water outlet well is connected to the side wall of the upper end of the well assembly, and the opening of the water outlet well is located in the middle of the two guide strips. The opening width of the water outlet well is smaller than the circumferential spacing between adjacent wheel assemblies.

[0009] Furthermore, the wheel assembly is connected to the supporting wheel frame via a radial adjustment device, and the radial adjustment device is used to drive the wheel assembly to move radially along the wellbore assembly to adjust the rolling clearance between the wheel assembly and the inner wall of the wellbore assembly.

[0010] The two ends of the fixed shaft respectively pass through the U-shaped positioning grooves of the support rods and abut against the bottom of the adjustment block, and the fixed shaft is fastened to the support rods by retaining rings and locking nuts respectively located on the inner and outer sides of the support rods.

[0011] Furthermore, the bottom of the adjustment block is provided with an arc-shaped groove adapted to the fixed shaft.

[0012] The beneficial effects of the present invention are:

[0013] (1) The bevel coupling flange and the bevel coupling plate are matched through surface contact, and the deadweight is used to achieve automatic centering, which significantly reduces the difficulty of installation and alignment. At the same time, the O-ring provides a reliable seal, improves the sealing performance of the system, reduces hydraulic loss under high head conditions, and improves the efficiency of the unit. The coupling structure is integrated with the submersible pump. During maintenance, it only needs to lift the pump body to disengage the coupling, which greatly simplifies the maintenance process.

[0014] (2) The guide bar has a simple structure and is easy to weld and fix. Two symmetrical guide bars extend along the axial direction of the wellbore and cooperate with multiple pump truck components of the submersible pump housing to prevent circumferential rotation during the lifting process of the submersible pump, thereby improving the guide stability.

[0015] (3) The radial adjustment device can adjust the gap between the wheel assembly and the inner wall of the wellbore to adapt to the deformation of the wellbore or the wear after long-term use, always maintain the best contact state, avoid jamming, and make the pump truck move more smoothly in the pipeline;

[0016] (4) Split pump truck components simplify on-site installation and maintenance, and at the same time realize the adjustable axial direction and center of gravity of the pump truck components to avoid rollover;

[0017] (5) The wheel assembly is distributed in a 90° circumferential pattern, and the pump truck's movement trajectory avoids the water outlet opening, preventing the pump truck from tipping over into the water outlet. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0019] Figure 2 yes Figure 1 A partial enlarged view of point A in the middle.

[0020] Figure 3 It is a schematic diagram of the structure of the utility model in the axial direction of the wellbore component.

[0021] Figure 4 yes Figure 3 A partial enlarged view of point B in the middle.

[0022] Figure 5 It is a structural schematic diagram of the pump truck assembly of the present utility model.

[0023] Figure 6 It is a structural schematic diagram of the wheel assembly of the present utility model.

[0024] In the figure: wellbore assembly 1, inclined coupling plate 11, guide bar 12, submersible pump 2, inclined coupling flange 21, pump truck assembly 3, split frame 31, support wheel frame 32, wheel assembly 33, fixed shaft 331, roller 332, locking nut 333, retaining ring 334, water outlet wellbore 4, O-ring seal 5, radial adjustment device 6, adjustment screw 61, adjustment block 62. DETAILED DESCRIPTION

[0025] In order to facilitate the understanding of the present invention, the present invention will be described in more comprehensive and detailed manner below in conjunction with the accompanying drawings and preferred embodiments of the specification, but the protection scope of the present invention is not limited to the following specific embodiments.

[0026] like Figure 1 、 Figure 2 As shown, this embodiment provides a device for installing an oblique-pull submersible pump in a pipeline, comprising a wellbore assembly 1 and a submersible pump 2 slidably mounted within the wellbore assembly 1. The water inlet of the submersible pump 2 is provided with a beveled coupling flange 21. A beveled coupling plate 11, which mates with the beveled coupling flange 21, is located at the bottom of the wellbore assembly 1. An O-ring 5 seals the beveled coupling flange 21 and the beveled coupling plate 11. The mating of the beveled coupling flange 21 and the beveled coupling plate 11 allows the submersible pump 2 to be naturally centered by gravity during installation, reducing installation difficulty. The O-ring forms a seal under the compressive force of the beveled surface, minimizing hydraulic losses under high-lift conditions and improving unit efficiency.

[0027] like Figure 1 、 Figure 3 、 Figure 4 As shown, two guide bars 12 extending axially along the wellbore assembly 1 are symmetrically fixed to the lower portion of the inner wall of the wellbore assembly 1. Two or more pump truck assemblies 3 are axially spaced and installed on the housing of the submersible pump 2. The pump truck assembly 3 includes a fixing ring composed of two semicircular split frames 31. The two split frames 31 are fastened to the housing of the submersible pump 2 by bolts. At least two wheel assemblies 33 are provided on the fixing ring. The wheel assemblies 33 are connected to the split frames 31 through supporting wheel frames 32 and are in contact with the inner wall of the wellbore assembly 1. The two wheel assemblies 33 are located in the circumferential area between the two guide bars 12. The wheel assemblies 33 are limited by the guide bars 12 to limit the circumferential displacement of the submersible pump 2 when it slides in the wellbore assembly 1, ensuring that the submersible pump only slides in the axial direction and preventing the submersible pump from overturning when moving in the pipeline.

[0028] In this embodiment, four wheel assemblies 33 are provided on the fixing ring. The four wheel assemblies 33 are symmetrically distributed at 45° to the vertical direction on the circumferential cross-section of the wellbore assembly 1. The two guide bars 12 are symmetrically arranged on both sides of the center line of the wellbore assembly 1, and the angle between their installation positions and the vertical direction is slightly greater than 45°.

[0029] As a further optimization solution, a water outlet wellbore 4 is connected to the upper side wall of the wellbore assembly 1. The opening of the water outlet wellbore 4 is located in the middle of the two guide strips 12. The opening width of the water outlet wellbore 4 is smaller than the circumferential spacing of the adjacent wheel assemblies 33, so that the movement trajectory of the pump truck avoids the water outlet wellbore opening, preventing the pump truck from tipping over into the water outlet.

[0030] like Figure 5 、 Figure 6 As shown, in this embodiment, in order to avoid the wheel from getting stuck with the inner wall due to deformation of the pipeline and ensure that the submersible pump moves smoothly in the pipeline, the wheel assembly 33 is connected to the supporting wheel frame 32 through a radial adjustment device 6. The radial adjustment device 6 is used to drive the wheel assembly 33 to move radially along the wellbore assembly 1 to adjust the rolling clearance between the wheel assembly 33 and the inner wall of the wellbore assembly 1.

[0031] Specifically, the support wheel frame 32 includes two parallel support rods, each with a U-shaped positioning slot at its end. The radial adjustment device 6 includes an adjustment screw 61 and an adjustment block 62. The adjustment block 62 is located in the U-shaped positioning slot. The lower end of the adjustment screw 61 is rotatably engaged with the top of the adjustment block 62. The upper end of the adjustment screw 61 is threadedly connected to a screw hole on the top wall of the U-shaped positioning slot. By rotating the adjustment screw 61, the adjustment block 62 is driven to move radially along the wellbore assembly 1. The wheel assembly 33 includes a fixed shaft 331 and a roller 332 rotatably engaged with the fixed shaft 331. The roller 332 is located between the two support rods. The ends of the fixed shaft 331 respectively extend through the U-shaped positioning slots of the support rods and abut against the bottom of the adjustment block 62. The bottom of the adjustment block 62 is provided with an arcuate slot that matches the fixed shaft 331. The fixed shaft 331 is fastened to the support rod by a retaining ring 334 and a lock nut 333 located on the inner and outer sides of the support rod.

[0032] Many modifications and other embodiments of the present invention will occur to those skilled in the art with the aid of the teachings presented in the foregoing description and the associated drawings. Therefore, it is to be understood that the present invention is not limited to the specific embodiments disclosed, and modifications and other embodiments are intended to be included within the scope of the appended claims. Although specific terms are employed herein, they are used in a generic and descriptive sense only and not for purposes of limitation.

Claims

1. A device for installing an oblique-pull submersible pump in a pipeline, comprising a wellbore assembly (1) and a submersible pump (2) slidably installed in the wellbore assembly (1), characterized in that: The water inlet end of the submersible pump (2) is provided with a bevel coupling flange (21), the bottom of the wellbore assembly (1) is provided with a bevel coupling plate (11) matching the bevel coupling flange (21), and the bevel coupling flange (21) and the bevel coupling plate (11) are sealed by an O-ring (5); two guide strips (12) extending axially along the wellbore assembly (1) are symmetrically fixedly provided on the lower part of the inner wall of the wellbore assembly (1); two or more pump truck assemblies (3) are axially spaced and installed on the housing of the submersible pump (2), and the pump truck assembly (3) includes two semicircular The invention relates to a fixing ring composed of a split frame (31) and a submersible pump (2), wherein the two split frames (31) are fastened to the housing of the submersible pump (2) by bolts, and at least two wheel assemblies (33) are provided on the fixing ring, wherein the wheel assemblies (33) are connected to the split frame (31) through a supporting wheel frame (32) and contact the inner wall of the wellbore assembly (1), and the two wheel assemblies (33) are located in a circumferential area between two guide bars (12), and the wheel assemblies (33) are limited by the guide bars (12) to limit the circumferential displacement of the submersible pump (2) when it slides in the wellbore assembly (1).

2. The device for installing an oblique-pull submersible pump in a pipeline according to claim 1, characterized in that: Four wheel assemblies (33) are provided on the fixing ring. The four wheel assemblies (33) are symmetrically distributed at 45° to the vertical direction on the circumferential cross section of the wellbore assembly (1). The two guide bars (12) are symmetrically arranged on both sides of the center line of the wellbore assembly (1), and the angle between their installation positions and the vertical direction is greater than 45°.

3. The device for installing an oblique-pull submersible pump in a pipeline according to claim 2, characterized in that: A water outlet wellbore (4) is connected to the side wall of the upper end of the wellbore assembly (1), and the opening of the water outlet wellbore (4) is located in the middle of the two guide strips (12). The opening width of the water outlet wellbore (4) is smaller than the circumferential spacing between adjacent wheel assemblies (33).

4. The device for installing an oblique-pull submersible pump in a pipeline according to any one of claims 1 to 3, characterized in that: The wheel assembly (33) is connected to the supporting wheel frame (32) via a radial adjustment device (6), and the radial adjustment device (6) is used to drive the wheel assembly (33) to move radially along the wellbore assembly (1) to adjust the rolling clearance between the wheel assembly (33) and the inner wall of the wellbore assembly (1).

5. The device for installing an oblique-pull submersible pump in a pipeline according to claim 4, characterized in that: The support wheel frame (32) includes two support rods arranged in parallel, and the ends of the two support rods are correspondingly provided with U-shaped positioning grooves. The radial adjustment device (6) includes an adjustment screw (61) and an adjustment block (62). The adjustment block (62) is located in the U-shaped positioning groove. The lower end of the adjustment screw (61) is rotatably matched with the top end of the adjustment block (62). The upper end of the adjustment screw (61) is threadedly connected to the screw hole on the top groove wall in the U-shaped positioning groove. The adjustment block (62) is driven by rotating the adjustment screw (61). ) moves radially along the wellbore assembly (1), the wheel assembly (33) includes a fixed shaft (331), a roller (332) rotatably engaged with the fixed shaft (331), the roller (332) is located between the two support rods, both ends of the fixed shaft (331) are respectively passed through the U-shaped positioning grooves of the support rods and abut against the bottom of the adjustment block (62), and the fixed shaft (331) is fastened to the support rods through a retaining ring (334) and a locking nut (333) respectively located on the inner and outer sides of the support rods.

6. The device for installing an oblique-pull submersible pump in a pipeline according to claim 5, characterized in that: The bottom of the adjustment block (62) is provided with an arc-shaped groove adapted to the fixed shaft (331).

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