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E-mail：newstarzjj@sina.com
P.C：225402
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Home > news > Pipeline pump installation methods
Pipeline pump installation methods
The author：admin The date of：2016-5-9 Through：2019 times [Big Middle Small]
installation method
1, radial shaft runout equipment should ≤0.04 mm axial runout does not allow more than 0.1 mm;
2, the sealing parts of the equipment should be installed to keep clean, seal parts should be cleaned, Seals intact, to prevent dust and impurities into the sealing parts;
3, the installation process is strictly prohibited crashing, banging, so as not to damage the mechanical seal friction and seal failure to pay;
4, in contact with the sealing surface should be coated with a layer of clean mechanical oil installation in order to successfully install;
5, the installation of static ring gland, tighten the screws must force uniform, to ensure that the requirements of the vertical end surface of the stationary ring and the axis line;
6, after the installation manually push ring, ring enables flexible movement of the shaft, and a certain flexibility;
7, after moving installation hand drive shaft, the shaft should be no feeling of weight;
8, the device must be filled with the media before the operation, to prevent leaving dry friction seal failure;
Flow regulator
Outlet throttling
For lower than the number of revolutions of the pump, this is one of the most common and inexpensive method of flow regulation. This method is also generally limited to low, than turn on the number of pump use. Partially closing the outlet valve in any form pipeline will increase the system pressure head, so the system head curves and pipeline pump head curves intersect at a small flow rate. Move the meter so that the operating point to a lower efficiency point, and a power loss at the throttle valve. This large pump means may be important, but high investment adjustment method may be more attractive in the economy. To shut the throttle point may cause overheating of the fluid within the pump can be used to bypass the need to maintain a minimum flow, or with a different means of regulation. This previously mentioned process hot water or volatile liquid pump is a very important.
Inlet throttle
If there is sufficient NPSH available, then the suction line can save some power by throttling. Because the meter may cause overheating or vaporized liquid, so the jet fuel pipeline pump inlet throttling is often used. In a small flow, these pump impeller only partially filled with liquid, so that the input power and temperature rise of about throttling impeller outlet when fully operational bit 1/30 condensate pump flow usually submerged depth control 7, this is equivalent to the inlet throttling. Special designed to reduce cavitation damage to the extent that these pumps insignificant, but levels have become quite low.
Bypass regulator
Pipeline from the pump discharge line can divert all or part of the flow through the bypass tube incorporated into the suction port or other appropriate point of the pump. Bypass can be fitted with one or more flow control valve orifice and right. Metering bypass is used to reduce the flow of boiler feed pump, mainly to prevent overheating. If the bypass excess flow propeller pumps to replace the meter, it can save considerable power.
Speed regulation
With this method of adjusting the flow rate, the required power can be minimized, and can be adjusted to exclude traffic during overheating. Steam turbines and internal combustion engines with little additional cost it is easy to adapt speed regulator. Various kinds of mechanical, magnetic, hydraulic and transmission of DC and AC variable speed motor can be used to adjust the speed. Typically, variable speed motor is too expensive, only after special circumstances for economic studies have shown that is worthy in order to use adjustable blade adjustment.
After studying the impeller mounted on the front of the adjustable guide vanes and found that specific speed = 5700 (2.086), this method for adjusting the pump is effective. The leaves can produce a positive pre-swirl, thereby reducing the pressure head, flow and efficiency. For only by the blades get relatively little regulation. In Europe, large storage pumps for power generation, it is successfully applied adjustable outlet diffuser blades. We also have successfully studied pitch propeller pump vanes. In constant pressure head, and get a large flow range changes in efficiency loss is relatively small. However, these methods are too complicated and expensive, and therefore severely limited in practical application.
Qi
Qi to the inlet pipeline pump is a way to regulate the flow of this method compared to some of the meter can save power. Typically, they do not want the presence of air in the fluid delivery, the pump and the air too much danger of losing its head perfusion always exist, so except for a few occasions, but this method is rarely used in practice.
development trend
Domestic stainless steel pipe pump level and the production technology has been greatly improved, the market is also gradually increase the level of consumption for stainless steel pipe pump. Has reached the international standard requirements, to a certain extent, reduce the dependence on imports, but also expanded the share of exports.
Products made with stainless steel because of its long life, rust, green and other outstanding advantages have slowly entered the industrial application, this stainless steel pipeline pump is one of the best.
In recent years, stainless steel pipeline pump products through the introduction of absorption, renovation, digestion and innovation, its technical level has been greatly improved, especially in some major technology and equipment supporting the product at or near the international advanced level of similar products.
Stainless steel pipe industry in the entire pump pump driven by the representative of the pumps in the continuing forward, and this led to the raw materials markets, the new stainless steel continue to come out. Constantly improve the technology and patent specification, have brought the whole industry chain to a higher direction.
1, radial shaft runout equipment should ≤0.04 mm axial runout does not allow more than 0.1 mm;
2, the sealing parts of the equipment should be installed to keep clean, seal parts should be cleaned, Seals intact, to prevent dust and impurities into the sealing parts;
3, the installation process is strictly prohibited crashing, banging, so as not to damage the mechanical seal friction and seal failure to pay;
4, in contact with the sealing surface should be coated with a layer of clean mechanical oil installation in order to successfully install;
5, the installation of static ring gland, tighten the screws must force uniform, to ensure that the requirements of the vertical end surface of the stationary ring and the axis line;
6, after the installation manually push ring, ring enables flexible movement of the shaft, and a certain flexibility;
7, after moving installation hand drive shaft, the shaft should be no feeling of weight;
8, the device must be filled with the media before the operation, to prevent leaving dry friction seal failure;
Flow regulator
Outlet throttling
For lower than the number of revolutions of the pump, this is one of the most common and inexpensive method of flow regulation. This method is also generally limited to low, than turn on the number of pump use. Partially closing the outlet valve in any form pipeline will increase the system pressure head, so the system head curves and pipeline pump head curves intersect at a small flow rate. Move the meter so that the operating point to a lower efficiency point, and a power loss at the throttle valve. This large pump means may be important, but high investment adjustment method may be more attractive in the economy. To shut the throttle point may cause overheating of the fluid within the pump can be used to bypass the need to maintain a minimum flow, or with a different means of regulation. This previously mentioned process hot water or volatile liquid pump is a very important.
Inlet throttle
If there is sufficient NPSH available, then the suction line can save some power by throttling. Because the meter may cause overheating or vaporized liquid, so the jet fuel pipeline pump inlet throttling is often used. In a small flow, these pump impeller only partially filled with liquid, so that the input power and temperature rise of about throttling impeller outlet when fully operational bit 1/30 condensate pump flow usually submerged depth control 7, this is equivalent to the inlet throttling. Special designed to reduce cavitation damage to the extent that these pumps insignificant, but levels have become quite low.
Bypass regulator
Pipeline from the pump discharge line can divert all or part of the flow through the bypass tube incorporated into the suction port or other appropriate point of the pump. Bypass can be fitted with one or more flow control valve orifice and right. Metering bypass is used to reduce the flow of boiler feed pump, mainly to prevent overheating. If the bypass excess flow propeller pumps to replace the meter, it can save considerable power.
Speed regulation
With this method of adjusting the flow rate, the required power can be minimized, and can be adjusted to exclude traffic during overheating. Steam turbines and internal combustion engines with little additional cost it is easy to adapt speed regulator. Various kinds of mechanical, magnetic, hydraulic and transmission of DC and AC variable speed motor can be used to adjust the speed. Typically, variable speed motor is too expensive, only after special circumstances for economic studies have shown that is worthy in order to use adjustable blade adjustment.
After studying the impeller mounted on the front of the adjustable guide vanes and found that specific speed = 5700 (2.086), this method for adjusting the pump is effective. The leaves can produce a positive pre-swirl, thereby reducing the pressure head, flow and efficiency. For only by the blades get relatively little regulation. In Europe, large storage pumps for power generation, it is successfully applied adjustable outlet diffuser blades. We also have successfully studied pitch propeller pump vanes. In constant pressure head, and get a large flow range changes in efficiency loss is relatively small. However, these methods are too complicated and expensive, and therefore severely limited in practical application.
Qi
Qi to the inlet pipeline pump is a way to regulate the flow of this method compared to some of the meter can save power. Typically, they do not want the presence of air in the fluid delivery, the pump and the air too much danger of losing its head perfusion always exist, so except for a few occasions, but this method is rarely used in practice.
development trend
Domestic stainless steel pipe pump level and the production technology has been greatly improved, the market is also gradually increase the level of consumption for stainless steel pipe pump. Has reached the international standard requirements, to a certain extent, reduce the dependence on imports, but also expanded the share of exports.
Products made with stainless steel because of its long life, rust, green and other outstanding advantages have slowly entered the industrial application, this stainless steel pipeline pump is one of the best.
In recent years, stainless steel pipeline pump products through the introduction of absorption, renovation, digestion and innovation, its technical level has been greatly improved, especially in some major technology and equipment supporting the product at or near the international advanced level of similar products.
Stainless steel pipe industry in the entire pump pump driven by the representative of the pumps in the continuing forward, and this led to the raw materials markets, the new stainless steel continue to come out. Constantly improve the technology and patent specification, have brought the whole industry chain to a higher direction.