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Pumping Station Inclined Pump Installation Process
Taipuhe pumping station project oblique pump installation process Description: large-scale oblique flow pump its characteristics of large flow in the water supply project began to gradually apply the ramp pump installation procedures, the installation location of the reference point setting and installation process is related to the oblique axis Pump installation is the key. Keywords: inclined shaft pump installation reference installation location 1 Introduction Taipuhe Pumping Station is located in the territory of Miaogang Town, Wujiang City, Jiangsu Province, south of the Taipu River Control Barrier, about 2 km from the East Lake, about 51 km from Suzhou City, and Has been built Taipu River control gates arranged in parallel, the center line parallel to the distance of 200 meters. Taipuhe Pumping Station Project is the largest single project in the key project of comprehensive management of Taipu River Basin. The main function of Taipuhe Pumping Station is to effectively improve the water quality at the intake of the second phase of the Yellow River diversion project in Shanghai and to improve the living standards of more than half of Shanghai's population and enterprises and institutions Water supply quality and water supply guarantee rate, pump design flow 300m3 / s, installed 6 50 m3 / s inclined 15 ° inclined axis pump, impeller diameter 4.1m, supporting 1600kw asynchronous motor, the highest net lift pump 1.64m, design net Head 1.39m, the minimum net head 0.76m. The process is based on engineering practice, the advanced technology, scientific management methods formed by the combination. Pumping six inclined shaft pump installation, the use of this process of construction, installation of high quality, short construction period, significant benefits. Taipuhe pumping station biggest feature: impeller diameter, total pumping station for the current world's most similar pumping stations. Impeller pump impeller diameter of 4.1m Taipuhe pumping station, but also for the first time the development and application of great significance, for the construction of the pumping station has laid a good foundation. 2 Process Features The process according to the characteristics of inclined shaft pump installation, described in detail the installation process of inclined shaft pump, the installation process and key process control methods, the overall concept of strong, simple and clear, easy to operate. Oblique shaft pump installation process, there are several key issues to be aware of: First, we must strictly control the installation center of the impeller body, which is installed on the basis of the pump, the pump will be installed in this reference position. Secondly, the concentricity and center position of the combined bearing seat at the location of the guide vane and the elbow should be strictly controlled. It will determine the inclination of the pump main shaft and the clearance between the impeller and the impeller body, and the operating conditions of the pump There is a close relationship. Third, the motor and gear box, gearbox and pump concentricity should be strictly controlled to reduce the noise of pump operation. 3 Scope This technology is suitable for larger impeller diameter, non-overall arrival of large inclined axial flow pump installation. According to the traditional installation process, inclined shaft pump installation is a single lifting, commissioning, the pumping station construction using three overall lifting of new technologies, new technology. Each inclined axis pump conical tube, telescopic casing, impeller shell three parts of the overall installation is for four reasons: First, the pump body has been poured concrete is completed, the former due to the impact of the upper concrete, has been Can not be vertically lifted in place; secondly, because of the large diameter of the front taper tube and only two feet, even if the lifting is in place it is difficult to tilt 15 ° fixed firmly. Third, the gasket between the parts and components is made of rubber asbestos gasket, it is difficult to join the rubber asbestos gasket into the combination of stitches in the erection of the flange and large diameter. But the three pieces together, the combination of four legs to facilitate the stability, lifting the center of the assembly just escaped the upper concrete can be vertical vertical lifting, single-piece assembly, the installation of the plant can be placed between the horizontal, easy to pad ; The construction time of the fourth and the third parts is much less than the construction time of the single part installation, effectively shortening the installation period and winning valuable time for the total construction period. It was originally scheduled for each oblique axis pump conical tube, telescopic tube, impeller shell three components of the single installation time of 15 days, and actually only 5 days time will be three parts assembly, lifting in place, the adjustment is completed, saving 2/3 plan period. The construction plan adopted two inclined shaft pumps at the same time the installation of the program, from time to time, six inclined shaft pumps installed in only 4 months, 6 months shorter than the original plan of 2 months; from the staff arrangements On the original planned construction staff of 80 people, while the actual construction of only 48 people, improve work efficiency, economic benefits are considerable, this is because: First, due to strict quality assurance links to avoid rework, can once meet the equipment installation specifications Third, according to the traditional installation process, the inclined shaft pump installation is a single lifting, commissioning, the pump station construction using a three-piece overall lifting of new technologies . The pump is inclined 15 ° installation, the components in the installation of the assembly between the assembly, to be adjusted to the oblique 15 ° position before installation, therefore, the lifting of each assembly is the key to install the pump, the assembly of each assembly is completed, the volume Large, heavy, lifting is not good, will produce deformation, affecting the quality of the pump installation, in order to solve this problem, we use 10t inverted chain tools for large parts oblique 15 ° adjustment of new technology, water operations, improve work efficiency, shorten the pump installation Duration. 4 Process Inclined shaft pump consists of the front cone, telescopic casing, impeller body, guide vane body, elbow, extension pipe and other fixed parts and the spindle, wheel body, combined bearings, guide bearings, gear boxes, motors and other rotating parts composition. Pump structure diagram shown in Figure 1 inclined shaft pump installation program: inclined shaft pump installed according to the pump fixed part, the rotating part of the installation order. Pump center line and impeller center line is the main control line installed pump, the control line as a mounting reference. According to the characteristics of civil engineering structure and taking into account the convenience of hoisting, first of all, the pre-cone, telescopic casing, impeller shell assembly between the installation, meet the requirements, the overall hoisting in place; followed by lifting guide vane body; Three, hoisting extension pipe (extension pipe in the elbow before installation, must be pre-mounted, otherwise, elbow installation is completed, the extension pipe has no space for lifting position) and elbows. Fourth, the rotating part of the installation. Inclined shaft pump installation flow chart: Fixed part of the installation flow chart: Rotary part of the installation flow chart: [Buy] fire pump, spray pump, sewage pump [Purchase] bearing accessories [Purchase] air lock valve [Procurement] signal amplifier [Procurement] Valve ã€Purchase】 Centrifugal Pump ã€Purchase】 Vertical Multistage Pump ã€Purchase】 Cylinder ã€Procurement】 Speed ​​Controlled Frequency Motor Previous: HAILAN Sea Blue J Series Piston Metering Pump Next: QY Series Pneumatic Pressure Test Pump