Novel axial-flow type gate pump guide vane body structure

Abstract

The utility model relates to a novel axial-flow type gate pump guide vane body structure which comprises an outer shaft, a guide vane body convenient installation section and a main guide vane body, the guide vane body convenient installation section is arranged between the outer shaft and the main guide vane body, and the guide vane body convenient installation section is an installation pipe section which is separated from the outer shaft integrated with a motor and can be divided in the middle. And the axial length L1 of the convenient mounting section of the guide vane body is + / -10% of the axial length of the pump cover. According to the convenient installation section of the guide vane body, the pipe section with the length of L1 is separated from the outer shaft integrated with the motor to be made into the installation pipe section capable of being split in the middle, so that the installation operation of the pump cover, the motor and the main guide vane body can be directly carried out, and the convenient installation section of the guide vane body is finally installed after the internal structure is installed. Therefore, the pump can be mounted without penetrating through a guide vane runner; the main guide vane body and the guide vane are optimally designed to be streamlined, and the guide vane runner loss is reduced.

Description

Technical Field

[0001] The utility model relates to a guide vane body structure, in particular to a novel axial flow gate pump guide vane body structure which is convenient to install, has high hydraulic efficiency and stable operation. Background Technique

[0002] The axial flow gate pump has the characteristics of large flow rate, small axial dimension, compact structure, convenient installation, etc.

[0003] In order to facilitate the installation and control the axial dimension of the existing axial flow gate pump, the motor and the pump adopt a design of sharing a common shaft, so that the axial dimensions of the motor and the guide vane body are all shortened. In addition, the outer wellbore and the motor of the submersible axial flow pump are made into one body. In order to be able to normally pass through the guide vane flow passage to install the pump cover and the guide vane body, the guide vanes are all made in the form of straight guide vanes. During operation, the guide vane loss is large, resulting in low efficiency of the whole pump, large power demand, affecting the user experience of customers, and increasing the operation cost of water conservancy projects. Therefore, in order to make the installation more convenient and the pump efficiency higher, it is of great practical significance to optimize the structure of the existing axial flow gate pump and propose a novel axial flow gate pump guide vane body structure with high efficiency and convenient installation. Content of the Utility Model

[0004] Aiming at the above problems, the main purpose of the utility model is to provide a novel axial flow gate pump guide vane body structure which is convenient to install, has high hydraulic efficiency and stable operation.

[0005] The utility model solves the above technical problems through the following scheme: a novel axial flow gate pump guide vane body structure, the novel axial flow gate pump guide vane body structure includes: an outer wellbore, a convenient installation section of the guide vane body, and a main guide vane body. The convenient installation section of the guide vane body is located between the outer wellbore and the main guide vane body. The convenient installation section of the guide vane body is made by separating a section from the outer wellbore integrated with the motor to form an installation pipe section that can be split in the middle. The axial length L of the convenient installation section of the guide vane body 1 is ±10% of the axial length of the pump cover.

[0006] In the specific embodiment of the utility model, the axial length L of the convenient installation section of the guide vane body 1 ≥190 mm.

[0007] In the specific embodiment of the utility model, the inner distance L between the two flanges where the outer wellbore is respectively connected to the gate and the installation section 4 (that is, the distance L between the installation flange of the outer wellbore and the gate and the installation flange of the installation section 4 ) is equal to L 5 +2d 1 +(50 - 70) mm, and L 4 ≥140 mm, where L 5 is the thickness of the installation flange between the outer wellbore and the gate, and d1 is the installation hole diameter for the installation flange of the outer wellbore and the gate.

[0008] In a specific embodiment of the present utility model, the outer diameter D of the flange of the portable installation section of the guide vane body 1 is the same as the outer diameter D of the mating installation flange of the outer wellbore and the main guide vane body 3 The inner diameter D of the installation section 2 is the same as the inner diameter of the outlet of the main guide vane body and the inner diameter D of the outer wellbore 4 The wall thickness S of the installation section 1 is the same as the wall thickness S of the outer wellbore 5 The thickness S of the split surface flange of the installation section 2 is S 3 +(5 - 10) mm, where S 3 is the thickness of the mating installation flange of the main guide vane body and the installation section, and S 4 is the thickness of the mating installation flange of the outer wellbore and the installation section, and S 3 is equal to S 4

[0009] The positive and progressive effects of the present utility model are as follows: Compared with the common similar technologies, the novel axial flow gate pump guide vane body structure provided by the present utility model has the following advantages:

[0010] 1. The portable installation section of the guide vane body can ensure that the installation operations of the pump cover, the motor, and the main guide vane body can be carried out directly without having to install the internal structure through the guide vane, making the installation and maintenance more convenient and saving costs;

[0011] 2. Facilitated by the portable installation section, the main guide vane body can not consider reserving installation space, no longer use straight guide vanes, but optimize the design of the guide vanes into a streamline shape, reducing hydraulic losses and improving the efficiency of the guide vane body.

[0012] 3. The optimized streamline-shaped guide vane body can effectively reduce the impact of the impeller outlet water to the guide vane inlet, improve the cavitation performance, reduce blade vibration and impact noise, and make the operation more stable.

[0013] 4. While the structural deformation of the novel guide vane body improves the hydraulic structure, it is still simple compared to the original guide vane structure, with low transformation costs and enhanced product competitiveness. Brief Description of the Drawings

[0014] Figure 1 is the assembly schematic diagram of the axial flow gate pump proposed by the present utility model.

[0015] Figure 2 is the part drawing of the portable installation section of the guide vane body in the present utility model.

[0016] Figure 3 ​This is a schematic assembly diagram of the prototype of the axial flow gate pump.

[0017] The following are the names corresponding to the reference numerals in the present utility model:

[0018] Figures 1-3 Among them: motor 1, pump cover 2, portable installation section 3 of the guide vane body, main guide vane body 4, pump shaft 5, runner chamber 6, impeller 7, outer wellbore 8. Specific embodiments

[0019] The following provides a preferred embodiment of the present utility model in conjunction with the accompanying drawings to detail the technical solution of the present utility model.

[0020] Figure 1 It is a cross-sectional view of the overall structure diagram of the present utility model, Figure 2 It is a structural diagram of the portable installation section of the guide vane body in the present utility model, as Figures 1-2 shown: A novel axial flow gate pump guide vane body structure provided by the present utility model, the novel axial flow gate pump guide vane body structure includes: outer wellbore 8, portable installation section 3 of the guide vane body, main guide vane body 4, the portable installation section 3 of the guide vane body is located between the outer wellbore and the main guide vane body 4, the portable installation section 3 of the guide vane body is made by separating a section from the outer wellbore integrated with the motor 1 to form an installation pipe section that can be split in the middle, and the axial length L of the portable installation section 3 of the guide vane body 1 is the axial length L of the pump cover 2 of L 2 ±10%.

[0021] The axial length L of the portable installation section 3 of the guide vane body of the present utility model 1 ≥190 mm.

[0022] The distance L between the installation flange of the outer wellbore 4 and the gate and the installation flange of the installation section 4 is equal to L 5 +2d 1 +(50 - 70) mm, and L 4 ≥140 mm, where L 5 is the thickness of the installation flange of the outer wellbore and the gate, and d 1 is the installation hole diameter of the installation flange of the outer wellbore and the gate.

[0023] The inner distance L between the two flanges where the outer wellbore is respectively connected to the gate and the installation section 4 (that is, the distance L between the installation flange of the outer wellbore and the gate and the installation flange of the installation section 4 ) is equal to L 5 +2d 1 +(50 - 70) mm, and L 4 ≥140 mm, where L 5 is the thickness of the installation flange of the outer wellbore and the gate, and d 1It is the installation hole diameter of the outer wellbore and the installation flange of the gate.

[0024] The outer diameter D of the flange of the portable installation section of the guide vane body 1 Is the same as the outer diameter D of the mating installation flange of the outer wellbore and the main guide vane body 3 The inner diameter D of the installation section 2 Is the same as the inner diameter of the outlet of the main guide vane body and the inner diameter D of the outer wellbore 4 The wall thickness S of the installation section 1 Is the same as the wall thickness S of the outer wellbore 5 The thickness S of the split surface flange of the installation section 2 Is S 3 +(5 - 10) mm, where S 3 Is the thickness of the mating installation flange of the main guide vane body and the installation section, S 4 Is the thickness of the mating installation flange of the outer wellbore and the installation section, S 3 Is equal to S 4 And equal.

[0025] For the portable installation section of the guide vane body of the present utility model, a pipe section with a length of L 1 Is separated from the outer wellbore integrated with the motor to form a split installation pipe section in the middle, which is used to ensure that the installation operations of the pump cover 2, the motor 3 and the main guide vane body can be carried out directly. After installing the internal structure, finally install this portable installation section of the guide vane body. In this way, the installation of the pump will no longer need to pass through the guide vane flow channel; for the main guide vane body, the guide vane is optimized to be streamlined to reduce the loss of the guide vane flow channel.

[0026] The following are specific implementation examples:

[0027] The axial length L of the portable installation section of the guide vane body 1 , L 1 Generally takes (L 2 Is the axial length of the pump cover) 0.9L 2 ~1.1L 2 , preferably 0.95L 2 And L 1 ≥190 mm, to ensure that there is enough operating space for the staff during the installation of the pump cover 2, the motor 3 and the guide vane body. The installation of the pump will no longer need to pass through the guide vane flow channel.

[0028] The distance L between the installation flange of the outer wellbore and the gate and the installation flange of the installation section 4 Generally takes L 5 +2d 1 +(50 - 70) mm, preferably L 5 +2d 1 +65 mm and L 4 ≥140 mm, where L 5 Is the thickness of the installation flange of the outer wellbore and the gate, d 1is the installation hole diameter of the outer wellbore and the gate installation flange, ensuring sufficient space and not affecting wire threading and the installation of standard parts. Additionally, to ensure universality, the axial length L of the outer wellbore 0 remains unchanged.

[0029] The outer diameter D of the flange of the portable installation section of the guide vane body 1 is the same as the outer diameter D of the mating installation flange of the outer wellbore and the main guide vane body, ensuring aesthetics; the inner diameter D of the installation section 3 is the same as the inner diameter of the outlet of the main guide vane body and the inner diameter D of the outer wellbore 2 to ensure a consistent flow passage and reduce hydraulic losses; the wall thickness S of the installation section 4 is the same as the wall thickness S of the outer wellbore 1 to ensure appearance consistency; the flange thickness S of the split surface of the installation section 5 is generally taken as S 2 +(5 - 10)mm, preferably S 3 +10mm, where S 3 is the thickness of the mating installation flange between the main guide vane body and the installation section, and S 3 is the thickness of the mating installation flange between the outer wellbore and the installation section, and S 4 =S 3 to ensure installation strength and appearance consistency. 4

[0030] The axial external dimensions of the main guide vane body remain unchanged to ensure universality. The guide vanes are optimized to be streamlined. The inlet angle of the guide vanes is coordinated with the water outlet of the impeller 7 to reduce water flow impact. The outlet angle is the same as that of the original straight vanes to ensure that the water flow is approximately rectified into axial flow and reduce the flow channel loss of the guide vanes.

[0031] In the specific embodiments of the present invention, all the above parameters can be adjusted according to actual requirements.

[0032] Figure 3 This is a schematic diagram of the prototype assembly of the present axial flow gate pump. In the present invention, a pipe section with a length of L 1 is separated from the outer wellbore integrated with the motor to form a portable installation pipe section of the guide vane body that can be split in the middle, and is integrated with the main guide vane body to form a new guide vane body structure, which is used to ensure that the internal installation operations of the pump cover, the motor, and the main guide vane body can be directly carried out from the outside. The length space of the installation section L 1 is sufficient for the entry and exit of hands and tools. After installing the internal structure, finally, the two split upper and lower parts of the portable installation section of the guide vane body can be installed. In this way, the installation of the pump will no longer need to pass through the guide vane flow channel, making the installation and maintenance more convenient and cost-saving.

[0033] The installation of the motor, pump cover and main guide vane body no longer needs to pass through the guide vane flow channel, which is the key to the improvement of the utility model. In this way, the guide vane can be optimized to be streamlined, and the inlet angle can match the water outlet of the impeller, reduce water flow impact, improve the cavitation performance of the guide vane body, and reduce vibration and noise; the outlet angle is consistent with the original straight blade, which can ensure that the water outlet of the guide vane body is approximately axial flow, reduce the loss of the guide vane flow channel, and improve the pump efficiency.

[0034] Through the above optimized design, the utility model improves the hydraulic structure while having the advantages of being simpler than the original guide vane structure, low modification cost, and convenient installation and maintenance. The new structure balances the impeller axial force, improves cavitation performance, reduces pump vibration and noise, enhances structural reliability, ensures stable operation of the pump, and increases the service life of the pump in disguise, achieving the purpose of improving the market competitiveness of axial flow gate pumps.

[0035] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. The technicians in this industry should understand that the utility model is not limited by the above embodiments. The above embodiments and the description are only to illustrate the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model will have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A new type of axial flow gate pump guide vane structure, characterized by: The guide vane structure of the novel axial flow gate pump includes: an outer wellbore, a convenient installation section of the guide vane body, and a main guide vane body. The convenient installation section of the guide vane body is located between the outer wellbore and the main guide vane body. The convenient installation section of the guide vane body is a section separated from the outer wellbore integrated with the motor to make an installation pipe section that can be split in the middle. The axial length L1 of the convenient installation section of the guide vane body is ±10% of the axial length of the pump cover.

2. The novel axial flow gate pump guide vane structure according to claim 1 is characterized in that: The axial length L1 of the convenient installation section of the guide vane body is ≥190mm.

3. The novel axial flow gate pump guide vane structure according to claim 1 is characterized in that: The inner side distance L4 between the two flanges connecting the outer shaft to the gate and the mounting section is equal to L5+2d1+(50~70)mm, and L4≥140mm, where L5 is the thickness of the outer shaft and the gate mounting flange, and d1 is the mounting hole diameter of the outer shaft and the gate mounting flange.

4. The novel axial flow gate pump guide vane structure according to claim 1 is characterized in that: The outer diameter D1 of the flange of the convenient installation section of the guide vane body is the same as the outer diameter D3 of the matching installation flange of the outer wellbore and the main guide vane body, the inner diameter D2 of the installation section is the same as the inner diameter of the main guide vane body outlet and the inner diameter D4 of the outer wellbore, the wall thickness S1 of the installation section is the same as the wall thickness S5 of the outer wellbore, and the thickness S2 of the flange on the split surface of the installation section is S3+(5~10)mm, wherein S3 is the thickness of the matching installation flange of the main guide vane body and the installation section, and S4 is the thickness of the matching installation flange of the outer wellbore and the installation section, and S3 and S4 are equal.

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