阅读说明：本技术 一种多入口高速离心真空泵组 (Multi-inlet high-speed centrifugal vacuum pump set ) 是由 齐大伟 吴斌 陈德江 唐志共 杨炯良 李传旭 李伟华 于 2020-07-07 设计创作，主要内容包括：本发明公开了一种多入口高速离心真空泵组。该多入口高速离心真空泵组包括至少两个阵列排列的高速离心真空泵、一台增速齿轮箱、一台驱动电机、一套润滑系统和一套控制系统；每台高速离心真空泵的主轴均分别与增速齿轮箱入口处对应的增速齿轮箱高速轴连接,多根增速齿轮箱高速轴在增速齿轮箱出口处合并成一根增速齿轮箱低速轴,增速齿轮箱低速轴与驱动电机的电机主轴固定连接；润滑系统为每台高速离心真空泵和增速齿轮箱提供专用的润滑油路；控制系统独立控制每台高速离心真空泵的启动和停止。该多入口高速离心真空泵组流量大,能够满足超大流量排气系统的要求；结构紧凑,占用空间小；方便制造和检修维护。(The invention discloses a multi-inlet high-speed centrifugal vacuum pump set. The multi-inlet high-speed centrifugal vacuum pump set comprises at least two high-speed centrifugal vacuum pumps arranged in an array, a speed-up gear box, a driving motor, a set of lubricating system and a set of control system; the main shaft of each high-speed centrifugal vacuum pump is respectively connected with the high-speed shaft of the speed-increasing gear box corresponding to the inlet of the speed-increasing gear box, the high-speed shafts of the speed-increasing gear boxes are combined into a low-speed shaft of the speed-increasing gear box at the outlet of the speed-increasing gear box, and the low-speed shaft of the speed-increasing gear box is fixedly connected with the motor main shaft of the driving motor; the lubricating system provides a special lubricating oil path for each high-speed centrifugal vacuum pump and the speed-up gearbox; and the control system independently controls the start and stop of each high-speed centrifugal vacuum pump. The multi-inlet high-speed centrifugal vacuum pump set has large flow, and can meet the requirement of an ultra-large flow exhaust system; the structure is compact, and the occupied space is small; the manufacture and the overhaul and the maintenance are convenient.)

1. A high-speed centrifugal vacuum pump package of multiple entry which characterized in that: the multi-inlet high-speed centrifugal vacuum pump set comprises a high-speed centrifugal vacuum pump set, a speed-up gear box, a driving motor, a set of lubricating system and a set of control system, wherein the high-speed centrifugal vacuum pump set is composed of N high-speed centrifugal vacuum pumps which are arranged in an array and sequentially connected from front to back, and N is more than or equal to 2;

the main shaft of each high-speed centrifugal vacuum pump is respectively connected with the high-speed shaft of the speed-increasing gear box corresponding to the inlet of the speed-increasing gear box, the high-speed shafts of the N speed-increasing gear boxes are combined into a low-speed shaft of the speed-increasing gear box at the outlet of the speed-increasing gear box, and the low-speed shaft of the speed-increasing gear box is fixedly connected with the motor main shaft of the driving motor;

the lubricating system respectively provides a special lubricating oil way for each high-speed centrifugal vacuum pump, and the control system realizes independent lubrication of each high-speed centrifugal vacuum pump by respectively controlling valves on the special lubricating oil ways; the lubricating system also provides a special lubricating oil path for the speed-up gear box through an independent pipeline, and the independent lubrication of the speed-up gear box is realized through the control system;

the control system respectively and independently controls the start and stop of each high-speed centrifugal vacuum pump, and the required high-speed centrifugal vacuum pumps are opened according to the working condition requirements.

2. The multiple-inlet high-speed centrifugal vacuum pump group of claim 1, wherein: the lubricating oil path is a circulating oil path and has dual functions of lubricating and cooling.

3. The multiple-inlet high-speed centrifugal vacuum pump group of claim 1, wherein: the control system comprises a temperature sensor, a pressure sensor, a speed sensor and a PLC module which are arranged in the multi-inlet high-speed centrifugal vacuum pump set, the PLC module carries out data processing according to data fed back by the sensors and then generates instructions to control the rotating speed of the driving motor, the starting and stopping of the high-speed centrifugal vacuum pumps and the opening and closing of the valves.

Technical Field

The invention belongs to the technical field of centrifugal vacuum pumps, and particularly relates to a multi-inlet high-speed centrifugal vacuum pump set.

Background

The centrifugal vacuum pump has the characteristics of large flow, high efficiency, low noise, stable air extraction amount and the like. With the continuous development of various industries such as aerospace, petrochemical industry, metal smelting, environmental protection engineering and the like, centrifugal vacuum pumps are widely applied due to excellent characteristics, the use ratio of the centrifugal vacuum pumps in various exhaust systems is higher and higher, and the centrifugal vacuum pumps are continuously replacing volumetric vacuum pumps including jet vacuum pumps, water ring vacuum pumps and roots vacuum pumps which are used in large quantities at present.

The rotor of the centrifugal vacuum pump has very high rotation speed, so that the diameter of the rotor of the centrifugal vacuum pump cannot be too large, generally not more than 1m, the discharge capacity of the centrifugal vacuum pump is limited by the diameter of the rotor of the centrifugal vacuum pump, and the discharge capacity of the centrifugal vacuum pump with the maximum flow at present is 2500m³And/min, a large number of centrifugal vacuum pumps are required to be arranged in a large-flow exhaust system, and the operation and operation are greatly inconvenient due to the excessive number of the centrifugal vacuum pumps.

Currently, there is a need to develop a multi-inlet high-speed centrifugal vacuum pump set.

Disclosure of Invention

The invention aims to solve the technical problem of providing a multi-inlet high-speed centrifugal vacuum pump set.

The invention relates to a multi-inlet high-speed centrifugal vacuum pump set, which is characterized in that: the multi-inlet high-speed centrifugal vacuum pump set comprises a high-speed centrifugal vacuum pump set, a speed-up gear box, a driving motor, a set of lubricating system and a set of control system, wherein the high-speed centrifugal vacuum pump set is composed of N high-speed centrifugal vacuum pumps which are arranged in an array and sequentially connected from front to back, and N is more than or equal to 2;

the main shaft of each high-speed centrifugal vacuum pump is respectively connected with the high-speed shaft of the speed-increasing gear box corresponding to the inlet of the speed-increasing gear box, the high-speed shafts of the N speed-increasing gear boxes are combined into a low-speed shaft of the speed-increasing gear box at the outlet of the speed-increasing gear box, and the low-speed shaft of the speed-increasing gear box is fixedly connected with the motor main shaft of the driving motor;

the lubricating system respectively provides a special lubricating oil way for each high-speed centrifugal vacuum pump, and the control system realizes independent lubrication of each high-speed centrifugal vacuum pump by respectively controlling valves on the special lubricating oil ways; the lubricating system also provides a special lubricating oil path for the speed-up gear box through an independent pipeline, and the independent lubrication of the speed-up gear box is realized through the control system;

the control system respectively and independently controls the start and stop of each high-speed centrifugal vacuum pump, and the required high-speed centrifugal vacuum pumps are opened according to the working condition requirements.

Furthermore, the lubricating oil path is a circulating oil path and has double functions of lubricating and cooling.

Furthermore, the control system comprises a temperature sensor, a pressure sensor, a speed sensor and a PLC module which are arranged in the multi-inlet high-speed centrifugal vacuum pump set, the PLC module carries out data processing according to data fed back by the sensors and then generates instructions to control the rotating speed of the driving motor, the starting and stopping of each high-speed centrifugal vacuum pump and the opening and closing of the valve.

The high-speed centrifugal vacuum pumps arranged in N arrays in the multi-inlet high-speed centrifugal vacuum pump set share a driving motor power source through the speed-increasing gear box, and the independence of respective flow channels is kept.

The independent lubrication mode of each high-speed centrifugal vacuum pump adopted by the multi-inlet high-speed centrifugal vacuum pump set can ensure that the normal lubrication of other high-speed centrifugal vacuum pumps is not influenced when a certain high-speed centrifugal vacuum pump is stopped.

The multi-inlet high-speed centrifugal vacuum pump set adopts the independent control mode of each high-speed centrifugal vacuum pump, so that when a certain high-speed centrifugal vacuum pump is stopped, the independent operation of other high-speed centrifugal vacuum pumps is not influenced.

The multi-inlet high-speed centrifugal vacuum pump set has large flow, and can meet the requirement of an ultra-large flow exhaust system; the structure is compact, and the occupied space is small; the manufacture and the overhaul and the maintenance are convenient.

Drawings

FIG. 1 is a schematic structural view (top view) of a multi-inlet high-speed centrifugal vacuum pump assembly of the present invention;

fig. 2 is a schematic structural view (sectional view) of a high-speed centrifugal vacuum pump in the multi-inlet high-speed centrifugal vacuum pump group of the present invention.

In the figure, 1, a high-speed centrifugal vacuum pump I2, a high-speed centrifugal vacuum pump II 3, a speed-increasing gearbox high-speed shaft I4, a speed-increasing gearbox high-speed shaft II 5, a speed-increasing gearbox 6, a speed-increasing gearbox low-speed shaft 7, a driving motor main shaft 8, a driving motor 9, an inlet I10, an outlet I11, an inlet II 12 and an outlet II;

101. front bearing 102, volute 103, centrifugal impeller 104, rear bearing 105 and main shaft.

Detailed Description

The present invention will be described in detail below with reference to the accompanying drawings and examples.

The multi-inlet high-speed centrifugal vacuum pump set comprises a high-speed centrifugal vacuum pump set, a speed-up gear box, a driving motor, a set of lubricating system and a set of control system, wherein the high-speed centrifugal vacuum pump set is composed of N high-speed centrifugal vacuum pumps which are arranged in an array and sequentially connected from front to back, and N is more than or equal to 2;

the main shaft of each high-speed centrifugal vacuum pump is respectively connected with the high-speed shaft of the speed-increasing gear box corresponding to the inlet of the speed-increasing gear box, the high-speed shafts of the N speed-increasing gear boxes are combined into a low-speed shaft of the speed-increasing gear box at the outlet of the speed-increasing gear box, and the low-speed shaft of the speed-increasing gear box is fixedly connected with the motor main shaft of the driving motor;

the lubricating system respectively provides a special lubricating oil way for each high-speed centrifugal vacuum pump, and the control system realizes independent lubrication of each high-speed centrifugal vacuum pump by respectively controlling valves on the special lubricating oil ways; the lubricating system also provides a special lubricating oil path for the speed-up gear box through an independent pipeline, and the independent lubrication of the speed-up gear box is realized through the control system;

the control system respectively and independently controls the start and stop of each high-speed centrifugal vacuum pump, and the required high-speed centrifugal vacuum pumps are opened according to the working condition requirements.

Furthermore, the lubricating oil path is a circulating oil path and has double functions of lubricating and cooling.

Furthermore, the control system comprises a temperature sensor, a pressure sensor, a speed sensor and a PLC module which are arranged in the multi-inlet high-speed centrifugal vacuum pump set, the PLC module carries out data processing according to data fed back by the sensors and then generates instructions to control the rotating speed of the driving motor, the starting and stopping of each high-speed centrifugal vacuum pump and the opening and closing of the valve.

The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.