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introduction：Norman house root and nut Root mother，It is a connecting pipe，Used for locking through wire connectors or other pipe fittings。Other names：Lock nut、Lock nut、A surname。The working principle of the root is self-locking using the friction between the nut and the bolt。However, the reliability of this self-locking will be reduced under dynamic loads。On some important occasions, we will take some anti-loose measures，Ensure the reliability of the root lock。The root is one of the anti-loosening measures。 Normannou root species： The first is to use two identical nuts on the same bolt，Attach a tightening torque between the two nuts，Makes the bolt connection reliable。 The second type is a special lock nut，It needs to be used with an anti-loose gasket。Special lock nuts are not hex nuts，Its a round nut，On the circumference of the nut3a、4a、6or8notch（Depending on the size of the nut and the manufacturers product series），These gaps are the focus of the tightening tool，It is the clamping place of the bayonet of the anti-loose
2017-09-27 Reading quantity 203
introduction：Time relay Time relays are referred to when added（Or remove）After the input action signal，The output circuit needs to pass the specified accurate time to produce a jump change（Or contact action）A kind of relay。 Time relay working principle Time relay is a kind of control electricity which realizes delay control by electromagnetic principle or mechanical principle device。There are many kinds of it，Air damped type、Electric type and electronic type。
2017-09-27 Reading quantity 167
introduction：Time delay relay A relay is an electrical control device，Is when the input quantity（Excitation quantity）When the changes meet the specified requirements，An appliance that causes a predetermined step change in a controlled quantity in an electrical output circuit。Time delay relays are mainly used in various protection and automatic control lines for DC or AC operation，Auxiliary relay，To increase the number of contacts and contact capacity。The delay time can be freely adjusted according to the need。
2017-09-27 Reading quantity 176
introduction：leserGas safety valve leserGas safety valve has spring type and rod type two categories。There are also impulse relief valves、Pilot operated safety valve、Safety changeover valve、Safety relief valve、Deadweight safety valve, etc。Spring type safety valve mainly relies on the force of the spring to work，Spring type safety valve has closed and not closed，Generally flammable、Explosive or toxic media should be used enclosed，Steam or inert gases can be selected without sealing，There are also spring-loaded safety valves with and without wrenches。The function of the wrench is mainly to check the degree of flexibility of the valve disc，Sometimes it can also be used for manual emergency pressure relief。 Working principle of gas safety valve：
2017-09-26 Reading quantity 174
introduction：leserThe safety valve sets the pressure GermanyLESERIs a professional production of safety valve enterprises，Good quality，Imported in original package。With approximate200annualLESERThe company is a German pioneer in the field of mechanical engineering，Be established in1818years，Safety valve is a professional manufacturer，It produces the worlds leading safety valve products。LESERThe safety valve products are common23Series composition（diameterDN10~400,NPS1/2”~16”），They can be adapted for applications in all industrial sectors。GermanyLESERSafety valve cover Users can choose between closed or open valve covers，A closed valve cap combined with an airtight cap or opening device prevents media from entering the surrounding environment。
2017-09-26 Reading quantity 179
introduction：Programmable controller tutorial Programmable controller（Programmble Controller）For shortPCorPLCIt is an electronic system for numerical operation，Specifically designed for use in industrial environments。The following tutorial for programmable controllers is not given，If you want to know the tutorial of programmable controller you can visit our website home pageI hope I can help you。
2017-09-26 Reading quantity 183
introduction：Here is the first introduction to the choice of the sensitivity of the Angle sensor，The sensitivity of the Angle sensor is the resolution。The sensitivity of the general analog output Angle sensor is related to its range and output signal。The same range，The larger the output signal span，The higher the relative sensitivity。Like the same range0~10VThe output Angle sensor is more than0~5VThe output Angle sensor is highly sensitive。When we choose, we also need to choose the appropriate sensitivity according to our acquisition system and control system，Decide how much precision sensor to select。
2017-09-25 Reading quantity 191
introduction：smcExplosion-proof solenoid valve smcThe explosion-proof solenoid valve encloses all parts of the equipment that may ignite an explosive gas mixture in a housing，The housing can withstand any joint surface or structural gap through the housing，The combustible mixture that permeates the inside of the housing explodes internally without damage，And does not cause external by one、The ignition of a variety of gases or vapors in an explosive environment，Put may produce sparks、Parts with arcing and dangerous temperatures are placed in flameproof enclosures，The flameproof housing separates the space inside the device from the surrounding environment。The flameproof enclosure has a gap，Due to electrical equipment respiration and gas penetration，It may contain an explosive gas mixture。
2017-09-25 Reading quantity 199
introduction：Explosion-proof solenoid valve The explosion-proof solenoid valve encloses all parts of the equipment that may ignite an explosive gas mixture in a housing，The housing can withstand any joint surface or structural gap through the housing，The combustible mixture that permeates the inside of the housing explodes internally without damage，And does not cause external by one、The ignition of a variety of gases or vapors in an explosive environment，Put may produce sparks、Parts with arcing and dangerous temperatures are placed in flameproof enclosures，The flameproof housing separates the space inside the device from the surrounding environment。The flameproof enclosure has a gap，Due to electrical equipment respiration and gas penetration，It may contain an explosive gas mixture。 Explosion-proof solenoid valve class： Chinas explosion-proof grade standard is"GB3836.1-2000 Electrical equipment for explosive atmospheres",This standard will be supplemented or modified by the following explosion-proof type spe
2017-09-23 Reading quantity 165
introduction：Two-position three-way solenoid valve Two-position three-way solenoid valve is controlled by two coils，A coil is powered on instantly and then turned off、Valve open，Turn off the power after the other coil is powered on instantaneously、Valve close。Can be left off or on for a long time，Longer coil life。It is best used in high temperature pipes。It is widely used in metallurgy、petrification、pharmacy、tobacco、Food medicine、Urban construction and environmental protection、Water supply and drainage、Heating and air conditioning、Fire safety、Scientific research、Energy saving industry and other fields。 Two-position three-way solenoid valve technical parameters Type specification：DN1～DN500
2017-09-23 Reading quantity 188
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