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Donghu Pumping Station of Shenzhen adopts 4 speed control units and 2 speed control units, and designed water supply capacity of 1.08 million m3 / d. The speed governing system of this pumping station is briefly introduced, the energy saving effect, existing problems and its maintenance and management methods are introduced. Text 0 Overview ?? Shenzhen City Water (Group) Co., Ltd. East Lake Pump Station is located below the reservoir in Shenzhen, is a former pumping station. Owing to the...
Gear pump hydraulic circuit function analysis 1, priority flow control Regardless of gear pump speed, working pressure or branch flow size required, the value of a flow control valve can always ensure the required flow of equipment work. In this circuit, the pump output flow must be greater than or equal to the required flow of the oil circuit, secondary flow can be used for it or back to the tank. Setting a flow valve (proportional valve) will be a combination of control and hydraulic pump,...
[Abstract] Shenzhen Donghu Pumping Station adopts 4 sets of speed control units and 2 sets of constant speed units, and designed water supply capacity of 1.08 million m3 / d. The speed governing system of this pumping station is briefly introduced, the energy saving effect, existing problems and its maintenance and management methods are introduced. [Body] 0 Overview ?? Shenzhen City Water (Group) Co., Ltd. East Lake pumping station is located in Shenzhen Reservoir Dam is a former water pumping...
Centrifugal pump hydraulic design to solve three problems: 1) the main parameters of the flow components, as well as the best ratio of each part of the components. 2) flow design, selected in the hydraulic design process flow components selected flow rule. Such as the distribution of the circumferential velocity of the volute, the distribution of the impeller ring flow and the distribution of the axial velocity. These distributions are pre-design assumptions. 3) Impeller blade and runner...
(1) The operation of the new machine should pay attention to the operation within three months During the operation of the new machine, should grasp the operational status checks, such as maintenance of the machine, the screws are loose, the oil temperature is not abnormal increase, whether the hydraulic oil Quickly deteriorated, check the conditions of use compliance and so on. (2) do not immediately after the start of the hydraulic pump to increase the load After the start of the hydraulic...
Piston pump is divided into two types of self-suction oil pressure type. Most of the pressure supply type hydraulic pump with air pressure tank, there are hydraulic pump itself with a charge pump to the hydraulic pump inlet to provide pressure oil. Self-priming oil pump self-priming oil capacity, no external oil supply. Hydraulic pressure oil tank, each time you start the machine, you must wait for the hydraulic pressure tank to reach the use of pressure, to operate the hydraulic piston pump....
Infrastructure construction is the focus of our country's economic construction. The water supply and drainage projects, especially the large-scale sewage treatment projects, the WTO has entered, the western development has been started, the valve market prospects are excellent. Although the history of our water service has been nearly 120 years and 7 years earlier than Japan, there is still a huge gap and needs to be built. The current situation is that half of the water shortage in our...
Piston pumps have been around for decades and its popularity depends on two main reasons: 1. They do not require external energy sources - the force of the flowing water provides them with the energy they need. 2, their device is extremely simple, only two moving parts. Hydraulic plunger pump Hydraulic pressure oil tank, each time you start the machine, you must wait for the hydraulic pressure tank to reach the use of pressure before operating the machine. Straight shaft swash plate piston pump...
Abstract: Hydraulic support hydraulic valve in the life of a very low solution to foreign ways and means to improve the filtration system and improve the quality of emulsion, but with little effect. This article analyzes the development process of the seal pair of the holder valve, discusses the relationship between the material of the seal pair and the sealing performance. It is pointed out that the sealing technology is the key to improve the service life of hydraulic valve in hydraulic...
The efficiency of the hydraulic system depends mainly on the volumetric efficiency of the hydraulic pump. When the volumetric efficiency drops to 72%, routine maintenance, replacement of bearings and aged seals, replacement or repair of friction pairs beyond the mating clearance are required, Be restored. 1, hydraulic pump: Straight shaft swash plate piston pump is divided into two types of self-suction oil pressure type. Most of the pressure supply type hydraulic pump with air pressure tank,...
Hydraulic support hydraulic valve life is very low, foreign solutions and ways to improve the system's filtration accuracy and improve the quality of emulsion, but with little success. This article analyzes the development process of the seal pair of the holder valve, discusses the relationship between the material of the seal pair and the sealing performance. It is pointed out that the sealing technology is the key to improve the service life of hydraulic valve in hydraulic support....
NYP ordinary type high viscosity pump should pay attention to the following matters: You must take into account the viscosity of the NYP ordinary type high-viscosity pump conveying medium in order to determine the NYP ordinary high-viscosity pump speed range, according to NYP ordinary high viscosity pump Speed range and the required conditions NYP ordinary high-viscosity pump under normal flow range, to determine the NYP common type of high viscosity pump specific models. It should be noted...
Abstract: Hydraulic support hydraulic valve in the life of a very low solution to foreign ways and means to improve the filtration system and improve the quality of emulsion, but with little effect. This article analyzes the development process of the seal pair of the holder valve, discusses the relationship between the material of the seal pair and the sealing performance. It is pointed out that the sealing technology is the key to improve the service life of hydraulic valve in hydraulic...
Concrete pump is a pipeline construction equipment rely on pressure delivery of concrete, concrete pump hydraulic system is generally high pressure and high flow system. From the use of concrete pump survey found that many types of concrete pump, the use of about 40min, the hydraulic system temperature up to 60e, after about 2h, the hydraulic system thermal equilibrium temperature can be as high as 70e above the concrete pump hydraulic system Normal heat balance temperature should be about 50e....
Abstract: The variable of the hydraulic pump is realized by changing the working volume of the pump chamber. Taking CY-type piston pump as an example, the angle γ between the normal of the swash plate and the rotary axis of the cylinder is changed, that is, Working volume, when the maximum γ angle, the maximum working volume of the plunger chamber, to achieve full displacement oil supply, when the γ angle is 0, the working volume of the plunger chamber is 0, then the hydraulic pump does not...
High viscosity pump advantages: (1) delivery of liquid smooth, pulsation, vibration, low noise. (2) high viscosity pump has a strong self-priming performance. (3) The correct selection of parts materials, can transport a variety of corrosive media, the use of temperature can be 200 ℃. (4) the same internal and external rotor rotation, wear small, long service life. (5) high-viscosity pump speed and flow rate as a linear function, may be appropriate to change the pump to change the flow. (6)...
Abstract: In this paper, the shortage of test methods for power steering hydraulic pump is analyzed. A new test method is proposed. Proved by the production practice, the test method is easy to operate. The test results can truly and accurately reflect the performance of the steering hydraulic pump. Power steering hydraulic pump test equipment. Test Equipment 1. Introduction The power steering hydraulic pump is the heart of the power steering system. The performance of the power steering system...
Ethylene Unit The propylene unit pump (designation E-GA301A / B) supplies raw material for the downstream polypropylene unit. The pump has an extremely important role for the entire polypropylene unit. The liquid propylene used for the reaction is supplied entirely by it, A problem with the pump will result in the parking of the entire ethylene and polypropylene plant. Since the pump was put into service in April 2001, the two pumps have had multiple failures of lubricating oil, sealing liquid...
[Asia pump network] small crane replacement new hydraulic pump should pay attention to what issues? 1, always pay attention to the discovery of anomalies: abnormal sound, vibration or abnormal signal monitoring system, there must be its own reason, an abnormal phenomenon was found, immediately find the circuit diagram, according to every possible means, carefully observe whether the abnormal phenomenon caused by a temporary error . Assessment need not need parking treatment. All pressure, load,...
High viscosity pump has internal and external rotor, shaft, pump body, front cover, bracket, seal, bearing and other components. Sealing a mechanical seal and packing seal in two forms, for high temperature, high viscous density and corrosive media, the choice of packing seal. As the product can choose different materials and their unique structure, it is widely used in different nature, different viscosity of the medium transport. It will often appear in the actual future use of motor heating,...
Hydraulic pump is a hydraulic system of power components, is driven by the engine or motor, sucked from the hydraulic tank, forming a pressure oil discharge, sent to the implementation of components of a component. Hydraulic pump according to the structure is divided into gear pump, piston pump, vane pump and screw pump. The following small series for everyone to introduce the type of hydraulic pump and hydraulic pump working principle. The working principle and type of hydraulic pump Hydraulic...
Gear pump arc spraying repair technology 1, the principle and characteristics of arc spraying Arc coating technology in the past 20 years in materials, equipment and applications developed rapidly, its working principle is to be two sprayed metal wire melting electrode 2, the gear Pump Arc Spray Repair process Bushing bore, sleeve outer, gear shaft and pump casing uniform wear and scratches between 0.02-0.20mm, should adopt high hardness, strong combination with the body, wear Good arc spray...
Hydraulic pump is a hydraulic system of power components, is driven by the engine or motor, sucked from the hydraulic tank, forming a pressure oil discharge, sent to the implementation of components of a component. Hydraulic pump according to the structure is divided into gear pump, piston pump, vane pump and screw pump. Hydraulic pump common fault and solution Fault reason: (1) hydraulic tank oil surface is too low; Remedy: add hydraulic oil Fault reason: (2) did not use hydraulic oil...
High viscosity pump before starting operation, to the gear pump filled with liquid to be transported within the housing, for safe start. If the ambient temperature is below the freezing point, preheat the pump with heat steam beforehand and then start the gear pump. The direction of rotation of high-viscosity pump with inlet and outlet port line. If the first gear pump operation, or long-term idle after use, it is best to run at no-load or light load first about an hour. If abnormal temperature...
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Privacy statement: Your privacy is very important to Us. Our company promises not to disclose your personal information to any external company with out your explicit permission.