CN107703992B - Electrical system of low temperature control device for oil injection lubrication - Google Patents
Electrical system of low temperature control device for oil injection lubrication Download PDFInfo
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- 238000005461 lubrication Methods 0.000 title claims abstract description 29
- 238000002347 injection Methods 0.000 title claims abstract description 17
- 239000007924 injection Substances 0.000 title claims abstract description 17
- 239000003921 oil Substances 0.000 claims abstract description 95
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims abstract description 60
- 238000001816 cooling Methods 0.000 claims abstract description 54
- 239000010687 lubricating oil Substances 0.000 claims abstract description 32
- 238000012360 testing method Methods 0.000 claims abstract description 25
- 238000005057 refrigeration Methods 0.000 claims abstract description 20
- 238000003860 storage Methods 0.000 claims abstract description 19
- 229910001220 stainless steel Inorganic materials 0.000 claims description 8
- 239000010935 stainless steel Substances 0.000 claims description 8
- 239000007788 liquid Substances 0.000 claims description 7
- 239000011521 glass Substances 0.000 claims description 5
- 238000010438 heat treatment Methods 0.000 claims description 5
- 229920006327 polystyrene foam Polymers 0.000 claims description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 239000010949 copper Substances 0.000 claims description 3
- 239000004033 plastic Substances 0.000 claims description 3
- 229920003023 plastic Polymers 0.000 claims description 3
- 229910000926 A-3 tool steel Inorganic materials 0.000 claims description 2
- 239000004698 Polyethylene Substances 0.000 claims description 2
- 230000000694 effects Effects 0.000 claims description 2
- 239000002184 metal Substances 0.000 claims description 2
- 229910052751 metal Inorganic materials 0.000 claims description 2
- 238000005192 partition Methods 0.000 claims description 2
- -1 polyethylene Polymers 0.000 claims description 2
- 229920000573 polyethylene Polymers 0.000 claims description 2
- 239000004800 polyvinyl chloride Substances 0.000 claims 3
- 229920000915 polyvinyl chloride Polymers 0.000 claims 3
- 238000005507 spraying Methods 0.000 claims 1
- 238000009413 insulation Methods 0.000 description 10
- 238000000034 method Methods 0.000 description 10
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 8
- 239000000446 fuel Substances 0.000 description 6
- 239000002828 fuel tank Substances 0.000 description 6
- 239000003595 mist Substances 0.000 description 5
- 229910052757 nitrogen Inorganic materials 0.000 description 4
- 238000004321 preservation Methods 0.000 description 4
- 238000005485 electric heating Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000007921 spray Substances 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000002937 thermal insulation foam Substances 0.000 description 1
- 230000005514 two-phase flow Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D23/00—Control of temperature
- G05D23/19—Control of temperature characterised by the use of electric means
- G05D23/20—Control of temperature characterised by the use of electric means with sensing elements having variation of electric or magnetic properties with change of temperature
- G05D23/24—Control of temperature characterised by the use of electric means with sensing elements having variation of electric or magnetic properties with change of temperature the sensing element having a resistance varying with temperature, e.g. a thermistor
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D23/00—Control of temperature
- G05D23/19—Control of temperature characterised by the use of electric means
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/26—Oils; Viscous liquids; Paints; Inks
- G01N33/28—Oils, i.e. hydrocarbon liquids
- G01N33/30—Oils, i.e. hydrocarbon liquids for lubricating properties
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- General Health & Medical Sciences (AREA)
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- Testing Resistance To Weather, Investigating Materials By Mechanical Methods (AREA)
- Devices That Are Associated With Refrigeration Equipment (AREA)
- Investigating Or Analyzing Materials Using Thermal Means (AREA)
Abstract
本发明公开了一种喷油润滑低温控制装置的电气系统，所述的低温控制装置包括壳体、制冷系统、电气系统、储油箱、酒精箱、空气循环冷却箱；所述的电气系统包括PID温度控制器、温度显示器、测温电阻、继电器、接触器、开关；所述PID温度控制器、温度显示器、开关均安装在前面板上；所述继电器、接触器安装在前面板内侧；所述PID温度控制器用来控制酒精箱和空气冷却箱的制冷系统的工作状态。本发明可以实现喷油润滑状态下，对循环流动润滑油的低温精确控制，控温范围‑30℃‑室温，控温精度±0.5℃，解决了当两个被润滑试件在接触点处的速度高于12m/s情况下润滑油油温的低温控制难题。
The invention discloses an electrical system of an oil injection lubrication low temperature control device. The low temperature control device includes a housing, a refrigeration system, an electrical system, an oil storage tank, an alcohol tank, and an air circulation cooling box; the electrical system includes a PID Temperature controller, temperature display, temperature measuring resistance, relay, contactor and switch; the PID temperature controller, temperature display and switch are installed on the front panel; the relay and contactor are installed on the inside of the front panel; the The PID temperature controller is used to control the working state of the refrigeration system of the alcohol tank and the air cooling tank. The invention can realize precise low-temperature control of the circulating lubricating oil in the state of oil injection lubrication, the temperature control range is -30°C-room temperature, and the temperature control accuracy is ±0.5°C, which solves the problem of two lubricated test pieces at the contact point The problem of low temperature control of lubricating oil temperature when the speed is higher than 12m/s.
Description
技术领域technical field
本发明涉及一种润滑油低温控制技术领域，尤其涉及一种喷油润滑低温控制装置的电气系统。The invention relates to the technical field of lubricating oil low temperature control, in particular to an electrical system of an oil injection lubrication low temperature control device.
背景技术Background technique
为了研究低温下航空航天轴承的润滑性能，需要准确模拟航空航天轴承所处的低温环境，即需要对被测试的润滑油进行冷却降温，同时也要保证被润滑试件所处的环境温度也处于低温状态，以完成润滑油在低温环境下摩擦润滑特性的测试。In order to study the lubrication performance of aerospace bearings at low temperatures, it is necessary to accurately simulate the low temperature environment in which the aerospace bearings are located, that is, it is necessary to cool down the tested lubricating oil, and at the same time ensure that the ambient temperature of the lubricated test piece is also at Low temperature state, in order to complete the test of friction and lubrication characteristics of lubricating oil in low temperature environment.
目前，常用的润滑油摩擦力测试机采用的是油浴润滑方式，将小球浸入被测试的润滑油中，通过小球的转动将润滑油带入球盘接触区。在小球所浸入的油槽壁外侧有蒸发器，在油槽底部下方有加热管。在做低温试验时，采用平衡调温技术(BTC)，在制冷系统连续工作的情况下，控制系统根据设定的温度点通过PID自动运算输出的结果去控制加热器的输出量，使润滑油油温最终达到动态平衡。但在润滑油内部主要利用热对流实现温度的均匀性。这种低温控制方法的缺点是：油浴润滑适合于被润滑试件运转速度较低的情况，即两个被润滑试件在接触点处的速度为12m/s,对于两个被润滑试件在接触点处的速度高于12m/s的情况，怎样实现低温下润滑油摩擦润滑特性的测试还未见到相关文献。At present, the commonly used lubricating oil friction testing machine adopts the oil bath lubrication method, the small ball is immersed in the lubricating oil to be tested, and the lubricating oil is brought into the ball-disc contact area through the rotation of the small ball. There is an evaporator on the outside of the wall of the oil tank where the balls are immersed, and a heating pipe under the bottom of the oil tank. In the low temperature test, the balanced temperature regulation technology (BTC) is adopted. When the refrigeration system is continuously working, the control system controls the output of the heater through the PID automatic calculation output according to the set temperature point, so that the lubricating oil The oil temperature eventually reaches a dynamic equilibrium. However, heat convection is mainly used to achieve temperature uniformity inside the lubricating oil. The disadvantage of this low-temperature control method is: oil bath lubrication is suitable for the case where the running speed of the lubricated test pieces is low, that is, the speed of the two lubricated test pieces at the contact point is 12m/s, for the two lubricated test pieces When the speed at the contact point is higher than 12m/s, how to realize the test of the friction and lubrication characteristics of lubricating oil at low temperature has not been seen in the relevant literature.
当两个被润滑试件在接触点处的速度高于12m/s时，一般采用喷油润滑，常见的喷油润滑方式，多为油雾润滑，是将低温压缩空气与微量润滑油混合得到雾化的低温气液两相流，再喷射到接触界面。这种方式的缺点在于油雾是空气和润滑油的混合物，而空气的比热容远小于润滑油的比热容，因此所测得的喷嘴处的温度是油雾的温度，并不能真实反应润滑油的实际温度。而且该方法对润滑油的收集和二次利用率较低，且泄露的油雾会对实验人员产生危害。When the speed of the two lubricated test pieces at the contact point is higher than 12m/s, oil spray lubrication is generally used. The common oil spray lubrication method is mostly oil mist lubrication, which is obtained by mixing low-temperature compressed air with a small amount of lubricating oil. The atomized low-temperature gas-liquid two-phase flow is sprayed to the contact interface. The disadvantage of this method is that the oil mist is a mixture of air and lubricating oil, and the specific heat capacity of the air is much smaller than that of the lubricating oil, so the measured temperature at the nozzle is the temperature of the oil mist, which cannot truly reflect the actual temperature of the lubricating oil. temperature. Moreover, this method has a low rate of collection and secondary utilization of lubricating oil, and the leaked oil mist will cause harm to experimenters.
对被润滑件环境温度的控制，常见的是采用液氮冷却方式，但在低温氮气的流量控制上存在缺陷，只是通过杜瓦瓶中的电加热芯发热量的大小来控制低温氮气的产生量，由于滞后性的存在容易过度冷却，还需要用另一套大功率的加热棒来抵消过多低温气体带来的过度降温效果，其结构也比较复杂，占用的体积也比较大。For the control of the ambient temperature of the lubricated parts, liquid nitrogen cooling is commonly used, but there are defects in the flow control of low-temperature nitrogen, and the production of low-temperature nitrogen is only controlled by the amount of heat generated by the electric heating core in the Dewar bottle , due to the existence of hysteresis, it is easy to overcool, and another set of high-power heating rods is needed to offset the excessive cooling effect caused by too much low-temperature gas. Its structure is also relatively complicated, and it occupies a relatively large volume.
目前已公开的的油浴润滑、喷油(油雾)润滑不能满足高速下，尤其是两个被润滑试件接触点速度高于12m/s时润滑油低温摩擦润滑特性测试中油温的精确控制，对于同时精确控制低温下的油温和环境温度更是没有见到相关文献。The currently disclosed oil bath lubrication and oil spray (oil mist) lubrication cannot satisfy the precise control of the oil temperature in the low temperature friction lubrication characteristic test of lubricating oil at high speed, especially when the contact point speed of the two lubricated test pieces is higher than 12m/s , for the precise control of oil temperature and ambient temperature at low temperature at the same time, there is no relevant literature.
发明内容Contents of the invention
本发明的目的是为了克服上述现有技术上的缺陷，提出了一种喷油润滑下油温和环境温度的低温控制方法及装置。其能同时满足降低润滑油的温度和降低被润滑试件环境温度，并实现温度控制结构的一体化。The purpose of the present invention is to overcome the above-mentioned defects in the prior art, and propose a low-temperature control method and device for oil temperature and ambient temperature under oil injection lubrication. It can reduce the temperature of the lubricating oil and the environment temperature of the lubricated test piece at the same time, and realize the integration of the temperature control structure.
为了达到上述目的，本发明采用的技术方案是：In order to achieve the above object, the technical scheme adopted in the present invention is:
一种喷油润滑低温控制装置的电气系统，所述的低温控制装置包括壳体、制冷系统、电气系统、储油箱、酒精箱、空气循环冷却箱；低温试验箱壳体经过钣金加工得到，材料为A3钢板，内部设有制冷系统、电气系统、储油箱、酒精箱和空气循环冷却箱；储油箱、酒精箱和空气循环冷却箱安装在壳体上部；制冷系统位于壳体底部；电气系统安装在壳体前面板上，所述的电气系统包括PID温度控制器、温度显示器、测温电阻、继电器、接触器、开关；所述PID温度控制器、温度显示器、开关均安装在前面板上；所述继电器、接触器安装在前面板内侧；所述PID温度控制器用来控制酒精箱和空气冷却箱的制冷系统的工作状态；所述温度显示器可以显示喷油口温度和被润滑件接触区内的温度；喷油口和被润滑件接触区内安装有所述测温电阻，用于实时测量喷油口处的油温和被润滑件接触区内的空气温度，并与PID温度控制器协作完成温度控制。An electrical system of an oil-sprayed lubricated low-temperature control device, the low-temperature control device includes a shell, a refrigeration system, an electrical system, an oil storage tank, an alcohol tank, and an air circulation cooling box; the low-temperature test box shell is obtained through sheet metal processing, The material is A3 steel plate, and there are refrigeration system, electrical system, oil storage tank, alcohol tank and air circulation cooling box inside; the oil storage tank, alcohol tank and air circulation cooling box are installed on the upper part of the shell; the refrigeration system is located at the bottom of the shell; the electrical system Installed on the front panel of the housing, the electrical system includes a PID temperature controller, temperature display, temperature measuring resistance, relays, contactors, and switches; the PID temperature controller, temperature display, and switches are all installed on the front panel ; The relay and contactor are installed on the inside of the front panel; the PID temperature controller is used to control the working status of the refrigeration system of the alcohol tank and the air cooling box; the temperature display can display the temperature of the oil injection port and the contact area of the lubricated parts The temperature in the oil injection port and the contact area of the lubricated part is installed with the temperature measuring resistance, which is used to measure the oil temperature at the oil injection port and the air temperature in the contact area of the lubricated part in real time, and cooperate with the PID temperature controller Complete temperature control.
所述的制冷系统包括两套制冷系统，分别用于酒精箱和空气循环冷却箱的冷却；所述制冷系统均具有冷凝器、储液器、压缩机及蒸发器相关元器件；所述冷凝器、储液器及压缩机依次连接，安装在壳体内的底板上；所述的蒸发器分别安装在酒精箱的壳体的内侧壁上及空气循环冷却箱壳体的内侧壁上；所述压缩机由线路连接至电气系统。Described refrigerating system comprises two sets of refrigerating systems, is respectively used for the cooling of alcohol tank and air circulation cooling box; Described refrigerating system all has condenser, liquid receiver, compressor and evaporator related components and parts; Described condenser , liquid accumulator and compressor are connected successively, and are installed on the bottom plate in the shell; Described evaporator is respectively installed on the inner wall of the shell of alcohol tank and the inner wall of air circulation cooling box shell; The machine is connected to the electrical system by lines.
所述储油箱与酒精储存箱共存于一个大箱体内，用不锈钢隔板将储油箱和酒精箱隔开；所述大箱体的材料为不锈钢材质，大箱体外部包裹有聚苯乙烯泡沫板保温层；采用油箱与酒精箱相邻的方式，由于热传导作用可使得油箱内温度较低，润滑油先在油箱内进行预冷，然后再进入酒精箱冷却，提高了冷却效率和速度。The oil storage tank and the alcohol storage tank coexist in a large box, and the oil storage tank and the alcohol tank are separated by a stainless steel partition; the material of the large box is made of stainless steel, and the outside of the large box is wrapped with a polystyrene foam board Insulation layer: The fuel tank is adjacent to the alcohol tank. Due to heat conduction, the temperature in the fuel tank is lower. The lubricating oil is pre-cooled in the fuel tank first, and then enters the alcohol tank for cooling, which improves the cooling efficiency and speed.
所述酒精箱为八边形结构，其中进油冷却管盘成螺旋状安装在酒精箱的箱体中，并在顶部设置有进油管和出油管，盘成螺旋状的进油管为紫铜管，具有极佳的导热性，可以快速传导热量，降低润滑油的温度；所述酒精箱正中安装有搅拌器；所述搅拌器被安装在顶盖上的电机驱动；加热棒安装在酒精箱的箱体搅拌器的旁边；所述酒精箱的箱体内侧壁上安装有蒸发器；所述酒精箱的箱体底部设置有排放口，采用螺帽密封；所述酒精箱的箱顶部设置有酒精灌入口，采用塑料帽密封。The alcohol tank has an octagonal structure, in which the oil inlet cooling pipe is coiled and installed in the body of the alcohol tank, and an oil inlet pipe and an oil outlet pipe are arranged on the top, and the spiral oil inlet pipe is a copper tube , has excellent thermal conductivity, can quickly conduct heat and reduce the temperature of lubricating oil; a stirrer is installed in the middle of the alcohol tank; the stirrer is driven by a motor installed on the top cover; the heating rod is installed in the alcohol tank Next to the box agitator; the inside wall of the alcohol box is provided with an evaporator; the bottom of the alcohol box is provided with a discharge port, which is sealed with a nut; the top of the alcohol box is provided with an alcohol The filling inlet is sealed with a plastic cap.
所述储油箱的箱体底部设有排放口，采用螺帽密封；所述储油箱的箱体上部开有正方形开口，可以灌入润滑油，并可以放入吸油泵和插入试验油回油管。The bottom of the tank of the oil storage tank is provided with a discharge port, which is sealed with a nut; the upper part of the tank of the oil storage tank has a square opening, which can be filled with lubricating oil, and can be put into the oil suction pump and inserted into the test oil return pipe.
所述空气冷却箱的箱体外面包裹有聚苯乙烯泡沫板保温层，空气冷却箱的箱体中央安装有耐高低温的不锈钢风扇一部，空气冷却箱的箱体侧壁上安装有蒸发器；所述空气冷却箱顶部有进气管与出气管各一个，进气管与出气管的材料为PVC；在进气管与出气管的PVC管上套上聚乙烯保温管，保温管的另一端与被润滑件接触区顶部的玻璃盖板上的进气管与出气管的管口相连接。The outside of the box of the air cooling box is wrapped with a polystyrene foam board insulation layer, a high and low temperature resistant stainless steel fan is installed in the center of the box of the air cooling box, and an evaporator is installed on the side wall of the air cooling box ; The top of the air cooling box has an air intake pipe and an air outlet pipe respectively, and the material of the air intake pipe and the air outlet pipe is PVC; a polyethylene insulation pipe is put on the PVC pipe of the air inlet pipe and the air outlet pipe, and the other end of the insulation pipe is connected with the quilt The inlet tube on the glass cover plate at the top of the lubricant contact area is connected to the nozzle of the outlet tube.
本发明的有益效果为：The beneficial effects of the present invention are:
1、可以实现喷油润滑状态下，对循环流动润滑油的低温精确控制，控温范围-30℃-室温，控温精度±0.5℃，解决了当两个被润滑试件在接触点处的速度高于12m/s情况下润滑油油温的低温控制难题；1. Under the state of oil injection lubrication, the low-temperature precise control of the circulating lubricating oil can be realized, the temperature control range is -30°C-room temperature, and the temperature control accuracy is ±0.5°C, which solves the problem when two lubricated test pieces are at the contact point The problem of low temperature control of lubricating oil temperature when the speed is higher than 12m/s;
2、实现了同时精确控制低温下的油温和环境温度，能更加精确模拟航空航天轴承所处的低温环境；2. Realize the precise control of oil temperature and ambient temperature at low temperature at the same time, and can more accurately simulate the low temperature environment where aerospace bearings are located;
3、冷却效率高，冷却速度快。采用油箱与酒精箱相邻的方式，由于热传导作用可使得油箱内温度较低，润滑油先在油箱中进行预冷，然后再进入酒精箱冷却，提高了冷却效率和速度；3. High cooling efficiency and fast cooling speed. The oil tank is adjacent to the alcohol tank. Due to heat conduction, the temperature in the oil tank is lower. The lubricating oil is pre-cooled in the oil tank first, and then enters the alcohol tank for cooling, which improves the cooling efficiency and speed;
4、采用空气冷却箱冷却空气，并通过输送冷空气至被润滑件接触区冷却的方法，在降低被润滑件接触区温度的同时，也能去除被润滑件接触区内的水份，减少被润滑接触区内润滑油水份的掺入量，提高试验结果的精确度，也避免了使用液氮的危险性。并且被润滑接触区结构简单，体积较小，控温精度可以达到±1℃，满足摩擦润滑测试要求。4. The air cooling box is used to cool the air, and the method of sending cold air to the contact area of the lubricated part for cooling can not only reduce the temperature of the contact area of the lubricated part, but also remove the moisture in the contact area of the lubricated part and reduce the The mixing amount of lubricating oil water in the lubricating contact area improves the accuracy of the test results and avoids the danger of using liquid nitrogen. Moreover, the structure of the lubricated contact area is simple, the volume is small, and the temperature control accuracy can reach ±1°C, which meets the requirements of the friction and lubrication test.
附图说明Description of drawings
图1为本发明的俯视示意图；Fig. 1 is a top view schematic diagram of the present invention;
图2为本发明的前视示意图。Fig. 2 is a schematic front view of the present invention.
图中：111为低温试验箱箱体，101为酒精加入口，102为出油管，103为搅拌电机，104为酒精箱，105为进油管，106为回油管，107为供油电机和油泵，108为油箱，109、112为保温泡沫板，110为电加热棒，113为空气冷却箱，114为进气口，115为出气口，116为循环风扇，117为搅拌器；212为被润滑件接触区，201为接触区测温电阻，202为喷油嘴测温电阻，203为喷油嘴，204为保温层，205为玻璃盖板，206为进气口，207为出气口，208为被测润滑试件(1)，209为被测润滑试件(2)，210为保温管道(1)，211为保温管道(2)；301为PID控制器、302、305为冷凝器，303为压缩机，304为冷却风扇。In the figure: 111 is the low temperature test box body, 101 is the alcohol inlet, 102 is the oil outlet pipe, 103 is the stirring motor, 104 is the alcohol tank, 105 is the oil inlet pipe, 106 is the oil return pipe, 107 is the oil supply motor and oil pump, 108 is an oil tank, 109 and 112 are thermal insulation foam boards, 110 is an electric heating rod, 113 is an air cooling box, 114 is an air inlet, 115 is an air outlet, 116 is a circulating fan, 117 is an agitator; 212 is a lubricated part In the contact area, 201 is the temperature measuring resistance in the contact area, 202 is the temperature measuring resistance of the fuel injector, 203 is the fuel injector, 204 is the insulation layer, 205 is the glass cover, 206 is the air inlet, 207 is the air outlet, and 208 is the Tested lubrication test piece (1), 209 is the tested lubrication test piece (2), 210 is the heat preservation pipe (1), 211 is the heat preservation pipe (2); 301 is the PID controller, 302, 305 is the condenser, 303 is a compressor, and 304 is a cooling fan.
具体实施方式Detailed ways
下面结合附图对本发明作以下进一步说明：Below in conjunction with accompanying drawing, the present invention will be further described as follows:
如附图1-2所示，本发明公开了一种喷油润滑低温控制装置的电气系统，所述的喷油润滑低温控制装置包括低温箱箱体111，储油箱108，酒精箱104，空气冷却箱113，制冷系统，电气系统及配套的被润滑件接触区保温结构212；所述低温箱箱体经过钣金加工得到，材料为A3钢板，外壳进行喷塑处理；在低温试验箱壳体内部上层安装有储油箱108，酒精箱104和空气冷却箱113。As shown in accompanying drawings 1-2, the present invention discloses an electrical system of an oil injection lubrication low temperature control device, the oil injection lubrication low temperature control device includes a low temperature box body 111, an oil storage tank 108, an alcohol tank 104, an air Cooling box 113, refrigeration system, electrical system and the heat preservation structure 212 in the contact area of the lubricated parts; An oil storage tank 108, an alcohol tank 104 and an air cooling tank 113 are installed on the inner upper layer.
所述制冷系统有两套相互独立的制冷系统，分别用于酒精箱104和空气冷却箱113的冷却；所述制冷系统的压缩机302安装在壳体的底板上；空气冷却箱113的制冷系统的冷凝器302安装在紧邻的壳体侧壁上；酒精箱104的制冷系统的冷凝器305安装在壳体侧壁和底部，并安装有散热风扇304；所述压缩机由线路连接至电气系统。The refrigeration system has two sets of mutually independent refrigeration systems, which are respectively used for the cooling of the alcohol tank 104 and the air cooling box 113; the compressor 302 of the refrigeration system is installed on the bottom plate of the housing; the refrigeration system of the air cooling box 113 The condenser 302 of the housing is installed on the adjacent housing side wall; the condenser 305 of the refrigeration system of the alcohol tank 104 is installed on the housing side wall and bottom, and a cooling fan 304 is installed; the compressor is connected to the electrical system by a line .
所述电气系统包括PID控制器301、温度显示器、继电器、接触器、开关；所述PID控制器301、温度显示器、开关均安装在前面板上；所述继电器、接触器安装在前面板内侧。The electrical system includes a PID controller 301, a temperature display, a relay, a contactor, and a switch; the PID controller 301, the temperature display, and a switch are all installed on the front panel; the relay and the contactor are installed inside the front panel.
所述酒精箱与储油箱共处于一个大箱体中，箱体外部包裹有保温层109；所述酒精箱101为八角形箱体；所述储油箱108与酒精箱101被不锈钢板隔开。The alcohol tank and the oil storage tank are co-located in a large box, and the outside of the box is wrapped with an insulating layer 109; the alcohol tank 101 is an octagonal box; the oil storage tank 108 and the alcohol tank 101 are separated by a stainless steel plate.
所述油箱108顶部设有正方形开口，吸油泵从开口插入油箱中，回油管106也由开口插入油箱108中；与油泵连接的电机107的四角可以坐在上盖板上；所述进油管105一端安装在油泵上，自伸出正方形口后，又插入酒精箱中，在酒精箱内盘成螺旋状，再从酒精箱中伸出来即为出油管102。The top of the fuel tank 108 is provided with a square opening, the oil suction pump is inserted into the fuel tank from the opening, and the oil return pipe 106 is also inserted into the fuel tank 108 through the opening; the four corners of the motor 107 connected to the oil pump can sit on the upper cover; the oil inlet pipe 105 One end is installed on the oil pump, after stretching out the square mouth, inserts in the alcohol tank again, coils into a spiral shape in the alcohol tank, stretches out from the alcohol tank again and is the oil outlet pipe 102.
所述酒精箱104为八边形结构，在顶部设置有进油管105和出油管102；所述酒精箱正中安装有搅拌器117；所述搅拌器117由安装在上盖板上的电机103驱动；所述电加热棒110安装在搅拌器117一侧；所述酒精加入口101设置在低温箱的顶部的面板上，配有塑料帽密封。The alcohol tank 104 is an octagonal structure, and an oil inlet pipe 105 and an oil outlet pipe 102 are arranged on the top; an agitator 117 is installed in the middle of the alcohol tank; the agitator 117 is driven by a motor 103 installed on the upper cover plate ; The electric heating rod 110 is installed on the side of the stirrer 117; the alcohol inlet 101 is set on the top panel of the low temperature box, and is equipped with a plastic cap for sealing.
所述空气冷却箱113外面包裹着保温层112，箱体中央安装有耐高低温的不锈钢叶片式风扇116，在箱体顶部设有进气管114，出气管115。The outside of the air cooling box 113 is wrapped with an insulating layer 112. A high and low temperature resistant stainless steel vane fan 116 is installed in the center of the box body. An air inlet pipe 114 and an air outlet pipe 115 are arranged on the top of the box body.
所述被润滑件接触区保温结构212是在原接触区壳体外部包裹保温层203，在顶部安装有玻璃盖板205；所述玻璃盖板205上加工有进气管206和出气管207；所述接触区测温电阻201安装在接触区内靠近出气管207的位置；所述喷油嘴203与出油管102相连接，在出油管102的外侧包裹有保温管，喷油嘴203由紫铜管制成；所述喷油嘴测温电阻粘贴在喷油嘴203上，靠近喷口处；所述被测润滑试件(1)208和被测润滑试件(2)209，位于接触区的中心部分。The thermal insulation structure 212 of the contact area of the lubricated part is to wrap the thermal insulation layer 203 outside the original contact area shell, and a glass cover plate 205 is installed on the top; the air inlet pipe 206 and the air outlet pipe 207 are processed on the glass cover plate 205; The temperature measuring resistance 201 in the contact area is installed in the contact area close to the outlet pipe 207; the fuel injection nozzle 203 is connected with the oil outlet pipe 102, and the outer side of the oil outlet pipe 102 is wrapped with a thermal insulation tube, and the fuel injection nozzle 203 is made of copper pipe The temperature measuring resistance of the fuel injector is pasted on the fuel injector 203, near the nozzle; the tested lubrication test piece (1) 208 and the tested lubrication test piece (2) 209 are located in the central part of the contact area.
所述空气冷却箱113的进气管114与球盘接触区保温结构212的出气管207连接，出气管115与进气管206连接；连接方式为分别使用保温管210和211连接进气管114、207和出气管115、206。The air inlet pipe 114 of the air cooling box 113 is connected with the air outlet pipe 207 of the heat preservation structure 212 in the ball-disc contact area, and the air outlet pipe 115 is connected with the air inlet pipe 206; Air outlet pipe 115,206.
油温控制方法：先开启制冷系统302-305将酒精箱104内的酒精进行冷却，为了保证酒精温度均匀，同时开启搅拌器117工作；然后启动润滑油供油电机和油泵107，润滑油通过进油管105进入酒精箱104中，通过酒精吸收润滑油的热量，达到使润滑油冷却的目的，润滑油在螺旋形缠绕的进油管105内冷却后从出油管102输送到喷油嘴203；在喷油嘴处的测温电阻202可以监测油温并实时反馈给PID温度控制器301，当喷油嘴处的测温电阻202测得油温接近设定温度后，在PID温度控制器301的控制下加热棒110开始输出热量抵消制冷系统的制冷量，维持温度的平衡，保证喷油嘴处油温的恒定。Oil temperature control method: first turn on the refrigeration system 302-305 to cool the alcohol in the alcohol tank 104, in order to ensure that the alcohol temperature is uniform, turn on the agitator 117 to work at the same time; then start the lubricating oil supply motor and oil pump 107, and the lubricating oil passes through the The oil pipe 105 enters the alcohol tank 104, and the heat of the lubricating oil is absorbed by the alcohol to achieve the purpose of cooling the lubricating oil. The temperature measuring resistor 202 at the oil nozzle can monitor the oil temperature and feed back to the PID temperature controller 301 in real time. The lower heating rod 110 starts to output heat to offset the cooling capacity of the refrigeration system, maintain the balance of temperature, and ensure the constant oil temperature at the nozzle.
环境温度控制方法：制冷系统302-305将空气冷却箱113中的空气冷却到所需温度，再启动循环风扇116，冷空气会从出气口115经过保温管道210和进气口206进入被润滑件接触区205；同时，被润滑件接触区212内的热空气也会通过出气口207经过保温管211和进气口114进入空气冷却箱113中；安装在被润滑件接触区212内的测温电阻201监测到温度接近设定温度后，PID温度控制器301会降低循环风扇116的转速，减少冷空气的输送量；当监测到被润滑件接触区212内温度上升时，PID温度控制器会提高循环风扇116的转速，输送冷空气进入被润滑件接触区212，维持温度在所需温度范围内。Ambient temperature control method: refrigeration system 302-305 cools the air in the air cooling box 113 to the required temperature, and then starts the circulation fan 116, and the cold air will enter the lubricated parts from the air outlet 115 through the insulation pipe 210 and the air inlet 206 Contact zone 205; meanwhile, the hot air in the contact zone 212 of the lubricated part will also enter the air cooling box 113 through the air outlet 207 through the insulation pipe 211 and the air inlet 114; the temperature measuring device installed in the contact zone 212 of the lubricated part After the resistance 201 monitors that the temperature is close to the set temperature, the PID temperature controller 301 will reduce the rotating speed of the circulating fan 116 to reduce the delivery volume of cold air; Increase the speed of the circulation fan 116 to deliver cold air into the lubricated part contact area 212 to maintain the temperature within the required temperature range.
以上所述仅是本发明的优选实施方式，应当指出的是，对于本技术领域的普通技术人员来说，在不脱离本发明原理的前提下，还可以做出若干改进和润饰，这些改进和润饰也应视为本发明的保护范围。The above is only a preferred embodiment of the present invention, it should be pointed out that, for those of ordinary skill in the art, without departing from the principle of the present invention, some improvements and modifications can also be made, these improvements and Retouching should also be regarded as the protection scope of the present invention.
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