水泥自上料攪拌車液壓系統(tǒng)壓力調(diào)整不當(dāng)，造成系統(tǒng)發(fā)熱在水泥自上料攪拌車液壓系統(tǒng)中，由于性能要求，系統(tǒng)中往往設(shè)有安全閥、溢流閥和順序閥等。
Improper pressure adjustment of the hydraulic system of the cement self-feeding mixer truck causes the system to heat. In the hydraulic system of the cement self-feeding mixer truck, due to performance requirements, the system is often equipped with safety valves, overflow valves and sequence valves.
若安全閥的壓力調(diào)的過低，安全閥將頻繁開啟，產(chǎn)生溢流損失，造成系統(tǒng)發(fā)熱;若壓力調(diào)整過高，又會(huì)使系統(tǒng)內(nèi)泄漏增加，使系統(tǒng)發(fā)熱，因此，應(yīng)按液壓系統(tǒng)的負(fù)載要求，正確計(jì)算和調(diào)整安全閥和壓力值，從而保證系統(tǒng)在規(guī)定的壓力范圍內(nèi)工作。
If the pressure of the safety valve is too low, the safety valve will open frequently, resulting in overflow loss and system heating; If the pressure is adjusted too high, the leakage in the system will increase and the system will heat up. Therefore, the safety valve and pressure value should be correctly calculated and adjusted according to the load requirements of the hydraulic system to ensure that the system works within the specified pressure range.
當(dāng)攪拌車送系統(tǒng)主回路為閉式系統(tǒng)時(shí)，攪拌車送系統(tǒng)中必須設(shè)熱交換回路，熱交換回路中溢流閥的設(shè)定壓力應(yīng)引起重視，設(shè)定壓力過低，會(huì)使攪拌車送液壓缸換向沖擊增加，設(shè)定壓力過高，會(huì)使溢流損失過大，系統(tǒng)溫升過高。
When the main circuit of the mixing truck delivery system is a closed system, a heat exchange circuit must be set in the mixing truck delivery system. The set pressure of the overflow valve in the heat exchange circuit should be paid attention to. If the set pressure is too low, the reversing impact of the mixing truck delivery hydraulic cylinder will increase. If the set pressure is too high, the overflow loss will be too large, and the system temperature rise will be too high.
因此，應(yīng)合理確定熱交換回路溢流閥的調(diào)整壓力值，一般該溢流閥的調(diào)整值為(1——115)MPa，攪拌車送系統(tǒng)補(bǔ)油回路的工作壓力為215MPa。當(dāng)水泥自上料攪拌車液壓系統(tǒng)中設(shè)置順序閥時(shí)，一定要了解順序閥的工作特點(diǎn)，正確調(diào)整順序閥的工作壓力。
Therefore, the adjusted pressure value of the overflow valve of the heat exchange circuit should be reasonably determined. Generally, the adjusted value of the overflow valve is (1-115) MPa, and the working pressure of the oil make-up circuit of the mixing truck delivery system is 215 MPa. When the sequence valve is set in the hydraulic system of the cement self-feeding mixer, it is necessary to understand the working characteristics of the sequence valve and correctly adjust the working pressure of the sequence valve.
如果內(nèi)控式順序閥的調(diào)整壓力過高，當(dāng)工作液壓缸的工作壓力低于其調(diào)整壓力時(shí)，順序閥閥口存在壓力損失，引起溫升，造成系統(tǒng)發(fā)熱，合理確定內(nèi)控式順序閥的設(shè)定壓力，可使工作缸的工作壓力高于順序閥的開啟壓力，順序閥工作時(shí)，閥口將全開，閥口基本無壓力損失，從而避免了由于順序閥設(shè)定壓力不當(dāng)而造成的系統(tǒng)發(fā)熱。
If the adjusting pressure of the internal control sequence valve is too high, when the working pressure of the working hydraulic cylinder is lower than its adjusting pressure, there will be pressure loss at the valve port of the sequence valve, which will cause temperature rise and system heating. Reasonable determination of the set pressure of the internal control sequence valve can make the working pressure of the working cylinder higher than the opening pressure of the sequence valve. When the sequence valve is working, the valve port will be fully open, and the valve port will basically have no pressure loss, Thus, the system heating caused by improper setting pressure of sequence valve is avoided.
攪拌車液壓系統(tǒng)壓力調(diào)整不當(dāng)?shù)暮蠊约叭绾谓鉀Q就講解完畢了，您對(duì)此有怎樣的了解可以隨時(shí)來我們網(wǎng)站
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