Conduit is to use connection of pipe, pipe the device that is used at carrying gas, liquid or the fluid that carry solid grain with what the connection such as valve becomes.
Normally, after the pressure boost such as fluid classics air-blower, compressor, pump and boiler, flow to low-pressure place from the high-pressured place of conduit, the pressure that also can use fluid oneself or gravity are carried. The use of conduit is very extensive, basically use in water supply, catchment, heat addition, carry oil and natural gas, agriculture to irrigate for gas, Sunday run, hydraulic engineering and in all sorts of industry device.
When the discharge of the fluid is foregone, the bulk that provides way depends on permission velocity of flow or permission attrition obstruction (pressure falls) . Way of the canal when velocity of flow is large is small, but pressure falls the value increases. Accordingly, capital construction of OK and economic pipeline invests when velocity of flow is large, but the expenses of moving specific power consumption of the power plant such as pump and compressor increases. In addition, if velocity of flow is too large, bring a few other and adverse elements likely still. Because this provides way,answer to consider a decision integratedly according to building investment, moving charge and other technology element.
Connection of pipe, pipe, the pass in and out on valve and equipment take-overs the connection method between, by the material of the property of the fluid, pressure and temperature and pipe qualitative, dimension is mixed the element decision such as installation place, basically have whorl connection, flange connection, bear insert connection and solder wait for 4 kinds of methods.
Whorl connection basically applies to small diameter pipeline. When connection, should tangle in whorl connection part commonly on fluorine is plastic and sealed belt, or the paste paint on besmear, circle on the sealed material such as hemp silk, in order to prevent leak. When pressure of above of 1.6 million handkerchief, add spacer in pipe end panel commonly sealed. Method of this kind of connection is simple, can disassemble reshipment, but vivid connect must be installed in the proper place of conduit, so that be installed at tearing open.
The conduit diameter range with flange applicable connection is bigger. The according to the fluid property when connection, pressure and temperature choose different flange and sealed spacer, use bolt clamp spacer to keep sealed. Often tear open the canal of outfit in need paragraph the place of place and conduit and equipment photograph connection, use flange connection mostly.
Bear insert connection to basically be used at cast-iron pipe, concrete canal, argil canal and its connection the connection between, apply to the water supply that works below condition of low-pressure normal temperature, catchment and gas conduit only. When connection, be in commonly bear hemp silk, cotton thread or asbestine rope are filled first inside the chamfer of socket, next the material such as reoccupy asbestine cement or lead is filled solid, still can be in bear balata seal ring is filled inside socket, it is better to make its are had flexible, concessional pipe has a few mobile.
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