阅读说明：本技术 一种电控注油器用简易测试装置 (Simple testing device for electric control oil injector ) 是由 张振山 张路宽 张建强 于 2019-10-29 设计创作，主要内容包括：本发明公开了一种电控注油器用简易测试装置,简易测试装置包括液压油箱、液压油供油阀、液压泵、蓄压块组件、脉冲信号发生器、润滑油重力油箱、润滑油供油阀、滑油滤器、排油阀和量筒,液压油箱、液压油供油阀、液压泵、蓄压块组件通过液压油供油管路依次连通并向注油器供给测试用液压油,润滑油重力油箱、润滑油供油阀、滑油滤器依次通过滑油管道连通至注油器供给运行用润滑油,注油器与液压油箱之间设置第一回油管路,蓄压块组件与液压油箱之间设置第二回油管路,脉冲信号发生器与注油器的电控端电信连接。装置结构简单,系统压力稳定可调,无需电动马达,仅通过人工操作即可实现液压系统的压力控制和所有测试工作,操作简单便捷。(The invention discloses a simple testing device for an electric control oil injector, which comprises a hydraulic oil tank, a hydraulic oil supply valve, a hydraulic pump, a pressure accumulation block assembly, a pulse signal generator, a lubricating oil gravity oil tank, a lubricating oil supply valve, a lubricating oil filter, an oil discharge valve and a measuring cylinder, wherein the hydraulic oil tank, the hydraulic oil supply valve, the hydraulic pump and the pressure accumulation block assembly are sequentially communicated through a hydraulic oil supply pipeline and supply testing hydraulic oil to the oil injector, the lubricating oil gravity oil tank, the lubricating oil supply valve and the lubricating oil filter are communicated to the oil injector through a lubricating oil pipeline in sequence for supplying lubricating oil for operation, a first oil return pipeline is arranged between the oil injector and the hydraulic oil tank, a second oil return pipeline is arranged between the pressure accumulation block assembly and the hydraulic oil tank, and the pulse signal generator is in signal connection with an electric control end. The device has the advantages of simple structure, stable and adjustable system pressure, no need of an electric motor, realization of pressure control and all test work of the hydraulic system only through manual operation, and simple and convenient operation.)

1. The utility model provides an automatically controlled oiling machine is with simple and easy testing arrangement which characterized in that: the simple testing device comprises a hydraulic oil tank (1), a hydraulic oil supply valve (3), a hydraulic pump (4), a pressure accumulating block assembly (5), a pulse signal generator (11), a lubricating oil gravity oil tank (12), a lubricating oil supply valve (13), a lubricating oil filter (15), an oil discharge valve (17) and a measuring cylinder (18), wherein the hydraulic oil tank (1), the hydraulic oil supply valve (3), the hydraulic pump (4) and the pressure accumulating block assembly (5) are sequentially communicated through a hydraulic oil supply pipeline and supply testing hydraulic oil to an oil injector (16), the lubricating oil gravity oil tank (12), the lubricating oil supply valve (13) and the lubricating oil filter (15) are sequentially communicated through a lubricating oil pipeline to the oil injector (16) to supply lubricating oil for operation, a first oil return pipeline is arranged between the oil injector (16) and the hydraulic oil tank (1), and a second oil return pipeline is arranged between the pressure accumulating block assembly (5) and the hydraulic oil tank (1), the oil spraying end of the oil ejector (16) is sequentially communicated with an oil discharging valve (17) and a measuring cylinder (18) through an oil discharging pipe, and the pulse signal generator (11) is in telecommunication connection with the electric control end of the oil ejector (16).

2. The simplified test apparatus according to claim 1, wherein: the bottom of the hydraulic oil tank (1) is communicated with a hydraulic oil relief valve (2), and the bottom of the lubricating oil gravity oil tank (12) is communicated with a lubricating oil relief valve (14).

3. The simplified testing apparatus according to claim 1 or 2, wherein: the pressure accumulating block assembly (5) comprises a hydraulic oil filter (6), a return valve (7), a safety valve (8), a hydraulic pressure accumulator (9) and a pressure gauge (10), the hydraulic oil filter (6) and the return valve (7) are connected to a hydraulic oil supply pipeline in parallel, one end of the safety valve (8) is connected to the hydraulic oil supply pipeline on the downstream side of the return valve (7), and the other end of the safety valve is communicated to the hydraulic oil tank (1) through the first oil return pipeline; the hydraulic pressure accumulator (9) is arranged on a hydraulic oil supply pipeline between the safety valve (8) and the pressure gauge (10), and the pressure gauge (10) is close to the hydraulic oil supply pipeline at one end of the oil ejector (16).

4. The simplified testing apparatus of claim 3, wherein: the oil ejector (16) is arranged on a test bench, and the measuring cylinders (18) are arranged on a measuring cylinder rack (19).

5. The simplified testing apparatus of claim 2, wherein: and the hydraulic oil relief valve (2), the lubricating oil relief valve (14), the hydraulic oil supply valve (3) and the lubricating oil supply valve (13) are all handle-operated ball valves.

6. The simplified test apparatus according to claim 1, wherein: the capacity of the hydraulic oil tank (1) is 25L, the capacity of the lubricating oil gravity oil tank (12) is 5L, and the bottom of the lubricating oil gravity oil tank (12) is at least 1m higher than the top surface of the oil ejector (16).

7. The simplified test apparatus according to claim 1, wherein: the hydraulic pump (4) is a manual hydraulic pump.

Technical Field

The invention relates to an oil injector testing technology, in particular to a simple testing device for an electric control oil injector.

Background

More than 95% of main propulsion engines used by the current newly-built large-scale ocean-going ship are electric-control low-speed diesel engines, a cylinder sleeve lubricating oil injector for lubricating a piston and a cylinder sleeve of the engine is an electric-control type oil injector, the action of the oil injector is controlled by switching value electric signals, oil injection timing is controlled by time nodes of electric signals, the plunger stroke of the oil injector is controlled by the duration time of the electric signals, the oil injection amount is controlled, and the oil injection times are controlled by the occurrence times of the electric signals.

After the oil injector is manufactured, whether the oil injector can smoothly complete the action or not needs to be tested in a factory, the operation is smooth, no friction trace exists on the surface of the mechanical part, and whether the full-stroke oil injection amount is within the error range allowed by the design or not is detected. During testing, the test device needs to be simulated in an actual working state, namely, 30MPa of hydraulic oil is continuously supplied for driving, and the pressure fluctuation is +/-5%.

The test equipment or device for this type of electronically controlled lubricator is not commercially available and is typically designed, manufactured or custom-made by the lubricator manufacturing facility. The general design is that a motor continuously operates to drive a variable hydraulic pump to continuously supply hydraulic oil, the pressure is stabilized by controlling the variable hydraulic pump to increase or decrease the displacement under the feedback of a pressure sensor, the scheme uses a complex and expensive electric control system and an expensive variable hydraulic pump, and a release valve is arranged on a hydraulic oil pipe system and timely releases the hydraulic oil pipe system when the hydraulic oil pipe system is in an overpressure state, so that the continuous waste of electric power is caused. Although the pressure of the hydraulic system can be guaranteed to fluctuate within a range of 5% by the testing equipment, the control principle adopted by the equipment adopting the design principle is complex, the cost is high in the aspect of pressure stability control, correspondingly, the equipment value is high, the later maintenance cost is high, and meanwhile, the size is large and a large testing area is occupied. Thus, a test system that is small, low cost, and stable in pressure control is continuing.

Disclosure of Invention

In order to overcome the defects in the prior art, the invention aims to provide a simple testing device for an electric control oil injector, which can solve the problems.

The purpose of the invention is realized by adopting the following technical scheme:

a simple testing device for an electric control oil injector comprises a hydraulic oil tank, a hydraulic oil supply valve, a hydraulic pump, a pressure accumulation block component, a pulse signal generator, a lubricating oil gravity oil tank, a lubricating oil supply valve, a lubricating oil filter, an oil discharge valve and a measuring cylinder, the hydraulic oil tank, the hydraulic oil supply valve, the hydraulic pump and the pressure accumulating block assembly are sequentially communicated through a hydraulic oil supply pipeline and supply test hydraulic oil to the oil injector, the lubricating oil gravity oil tank, the lubricating oil supply valve and the lubricating oil filter are communicated with the oil injector through a lubricating oil pipeline in sequence to supply lubricating oil for operation, a first oil return pipeline is arranged between the oil injector and the hydraulic oil tank, a second oil return pipeline is arranged between the pressure accumulating block component and the hydraulic oil tank, follow through the oil extraction pipe the oiling end of oiling ware communicates with oil drain valve and graduated flask in proper order, impulse signal generator is connected with the automatically controlled end telecommunication of oiling ware.

Preferably, a hydraulic oil relief valve is communicated and arranged at the bottom of the hydraulic oil tank, and a lubricating oil relief valve is communicated and arranged at the bottom of the lubricating oil gravity oil tank.

Preferably, the pressure accumulating block assembly comprises a hydraulic oil filter, a return valve, a safety valve, a hydraulic pressure accumulator and a pressure gauge, the hydraulic oil filter and the return valve are connected to a hydraulic oil supply pipeline in parallel, one end of the safety valve is connected to the hydraulic oil supply pipeline on the downstream side of the return valve, and the other end of the safety valve is communicated to the hydraulic oil tank through the first oil return pipeline; the hydraulic pressure accumulator is arranged on a hydraulic oil supply pipeline between the safety valve and the pressure gauge, and the pressure gauge is close to the hydraulic oil supply pipeline at one end of the oil ejector.

Preferably, the oil ejector is arranged on a test bench, and a plurality of measuring cylinders are arranged on a measuring cylinder rack.

Preferably, the hydraulic oil relief valve, the lubricating oil relief valve, the hydraulic oil supply valve and the lubricating oil supply valve are all handle-operated ball valves.

Preferably, the capacity of the hydraulic oil tank is 25L, the capacity of the lubricating oil gravity oil tank is 5L, and the bottom of the lubricating oil gravity oil tank is at least 1m higher than the top surface of the oil injector.

Preferably, the hydraulic pump is a manual hydraulic pump, the oil injector is an electric control oil injector, and the hydraulic pressure accumulator is of a diaphragm type.

Compared with the prior art, the invention has the beneficial effects that: the system is simple in structure, the pressure of the hydraulic system is stable, the pressure drop in the testing stage is long enough, the oil supply pump pressure can be timely supplied to the hydraulic system under the indication of the pressure gauge, the hydraulic system does not need to use an electric motor to drive the hydraulic pump and the electric control system, the pressure of the hydraulic system can be realized within the required range only through manual operation, all testing work can be completed by one person, the operation is simple and convenient, and the testing precision is guaranteed.

Drawings

Fig. 1 is a schematic view of a simple testing device for an electronic control oil injector according to an embodiment of the present application.

In the figure: 1. a hydraulic oil tank; 2. a hydraulic oil relief valve; 3. a hydraulic oil supply valve; 4. a hydraulic pump; 5. a pressure accumulation block assembly; 6. a hydraulic oil filter; 7. a check valve; 8. a safety valve; 9. a hydraulic accumulator; 10. a pressure gauge; 11. a pulse signal generator; 12. a lubricating oil gravity oil tank; 13. a lubricating oil supply valve; 14. a lubricating oil relief valve; 15. a lubricating oil filter; 16. an oil lubricator; 17. an oil discharge valve; 18. a measuring cylinder; 19. a measuring cylinder frame.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.

Referring to fig. 1, a simple testing device for an electronic control oil injector comprises a hydraulic oil tank 1, a hydraulic oil supply valve 3, a hydraulic pump 4, a pressure accumulating block assembly 5, a pulse signal generator 11, a lubricating oil gravity oil tank 12, a lubricating oil supply valve 13, a lubricating oil filter 15, an oil discharge valve 17 and a measuring cylinder 18, wherein the hydraulic oil tank 1, the hydraulic oil supply valve 3, the hydraulic pump 4 and the pressure accumulating block assembly 5 are sequentially communicated through a hydraulic oil supply pipeline and supply testing hydraulic oil to an oil injector 16, the lubricating oil gravity oil tank 12, the lubricating oil supply valve 13 and the lubricating oil filter 15 are sequentially communicated through a lubricating oil pipeline to the oil injector 16 through a lubricating oil supply pipeline for supplying lubricating oil for operation, a first oil return pipeline is arranged between the oil injector 16 and the hydraulic oil tank 1, a second oil return pipeline is arranged between the pressure accumulating block assembly 5 and the hydraulic oil tank 1, and an oil discharge end of the oil injector 16 is sequentially communicated with the oil discharge valve 17 and the measuring, the pulse signal generator 11 is in telecommunication connection with the electric control end of the oil injector 16.

The pressure accumulating block assembly 5 comprises a hydraulic oil filter 6, a check valve 7, a safety valve 8, a hydraulic pressure accumulator 9 and a pressure gauge 10, wherein the hydraulic oil filter 6 and the check valve 7 are connected to a hydraulic oil supply pipeline in parallel, one end of the safety valve 8 is connected to the hydraulic oil supply pipeline on the downstream side of the check valve 7, and the other end of the safety valve is communicated to the hydraulic oil tank 1 through the first oil return pipeline; the hydraulic pressure accumulator 9 is arranged on a hydraulic oil supply pipeline between the safety valve 8 and the pressure gauge 10, and the pressure gauge 10 is close to the hydraulic oil supply pipeline at one end of the oil ejector 16.

Further, the lubricator 16 is provided on a test bench (not shown), and a plurality of the measuring cylinders 18 are provided on a measuring cylinder holder 19.

In one embodiment, the hydraulic oil release valve 2, the lubricating oil release valve 14, the hydraulic oil supply valve 3 and the lubricating oil supply valve 13 are all handle-operated ball valves. The capacity of the hydraulic oil tank 1 is 25L, the capacity of the lubricating oil gravity oil tank 12 is 5L, and the bottom of the lubricating oil gravity oil tank 12 is at least 1m higher than the top surface of the oil injector 16.

The hydraulic pump 4 is a manual hydraulic pump. Furthermore, the bottom of the hydraulic oil tank 1 is communicated with a hydraulic oil relief valve 2, and the bottom of the lubricating oil gravity oil tank 12 is communicated with a lubricating oil relief valve 14. And when the test is not needed, opening the relief valve to discharge oil.

Specifically, a manual hydraulic pump 4 is used for supplying hydraulic oil to a hydraulic pipeline system, and the rated working pressure of the hydraulic pump 4 is 35MPa or higher than the pressure required by a test system; a safety valve 8 is used, the opening pressure of the safety valve 8 is set to be 31.5MPa, the pressure of the hydraulic system is released when the pressure is higher than 31.5MPa, and the pressure of the hydraulic system is ensured not to exceed 31.5 MPa; the hydraulic pressure accumulator 9 is used for stabilizing the pressure of hydraulic oil, so that the peak value of sudden rise and sudden fall of the pressure in the system is ensured, and the time is more than 3 minutes in the process that the pressure is gradually reduced from + 5% to-5%; using a 35MPa diaphragm hydraulic accumulator 9 of 10 liters or more in volume to stabilize the hydraulic oil pressure, the displacement being 450cm3 when the pressure is reduced from 31.5MPa to 28.5 MPa; by using the pulse signal generator 11, the running period and the total consumed time of the test oil ejector 16 can be set, one pulse of 2 seconds is set, 200 pulses form a group of tests, and the total consumed time is 6 minutes and 40 seconds; the pressure gauge 10 is used for displaying the pressure value of the hydraulic system and guiding the manual hydraulic pump 4 to supplement the hydraulic oil quantity to the hydraulic system; the tested piece is an electric control oil injector 16, the number of oil injection plungers in the electric control oil injector is 6-8 according to the size of the machine type, the total displacement is 460cm3 after 200 times according to the maximum 8 plungers, and the hydraulic pump 4 is operated for oil supply and pressure rise in the pressure reduction process within enough time; the measuring cylinder 18 is used for simultaneously and respectively measuring the total displacement of 200 times of oil injection of each oil injection port, so that the displacement of each plunger can be accurately measured; an oil strainer (6/15) is used to ensure that the drive end and the fill end mechanical parts of the oil filler 16 are not worn by foreign matter.

The top cover of the hydraulic oil tank 1 is detachable and is provided with three ports, the U-shaped pipe is ventilated, and the other two ports are used for recovering oil discharged by a hydraulic system; the hydraulic oil supply valve 3 is connected with the hydraulic pump 4 through a hose, and a high-pressure outlet of the hydraulic pump 4 is connected to an inlet of the pressure accumulation block component 5 through a hydraulic pipe; pressure accumulating block subassembly 5 is formed by the processing of forged steel spare, the check valve 7 has been installed to the inside hole, relief valve 8, hydraulic oil filter 6, hydraulic pressure accumulator 9 and manometer 10 have been installed to the external interface, wherein hydraulic oil filter 6 is installed at pressure accumulating block subassembly 5 oil inlet, thereafter in proper order check valve 7, relief valve 8, 8 relief valve release mouths oil returns and is connected to hydraulic tank 1 with the ordinary pressure union coupling, pressure accumulating block subassembly 5 top flange mouth connects hydraulic pressure accumulator 9, threaded connection manometer 10, pressure accumulating block subassembly 5 export is with the high-pressure hose output stable high-pressure hydraulic oil.

As shown in the right test table, a pulse signal generator 11 is connected to an electromagnetic valve of an oil injector 16 which is a tested piece, a hydraulic oil inlet of the oil injector 16 is connected to an output port of a high-pressure hose of a pressure accumulation block assembly 5, and a hydraulic oil discharge port is connected to a hydraulic oil tank 1; the height of the bottom of a lubricating oil gravity oil tank 12 with the volume of 5 liters from a lubricating oil inlet of an oil injector 16 is 1 meter, a lubricating oil supply valve 13 and a lubricating oil filter 15 are installed at the bottom, and the lubricating oil supply valve 13 is opened during testing to keep an oil way smooth; the oil outlets (6 or 8) of the oil injector 16 are respectively connected to oil discharge pipes, the test bench is provided with 8 pipe banks, the upper end of each pipe is provided with an oil discharge valve 17, the lower end of each pipe is close to a measuring cylinder rack 19, and 8 measuring cylinders 18 can be placed on the measuring cylinder rack.

The method of detecting the oil pump is as follows.

Firstly, preparing a simple detection device, keeping all parts completely clean, closing all valves, filling hydraulic oil into a hydraulic oil tank 1, filling lubricating oil into a lubricating oil gravity oil tank 12, installing an oil injector 16 on a test bench, and placing a measuring cylinder 18 on a measuring cylinder rack 19 below the test bench and aligning with an oil discharge pipe above the measuring cylinder.

Opening a valve to pump oil and exhaust, observing, manually opening the hydraulic oil supply valve 3, the check valve 7, the safety valve 8 and the lubricating oil supply valve 13, manually pumping oil to 31.5MPa for the hydraulic pump 4, setting the pulse signal generator 11 for 30 times/minute, operating the oil injector 16 for 20 times to discharge air in a pipe system and the oil injector 16, observing whether bubbles exist at an oil return port and an oil discharge port of the oil injector 16, if no bubbles exist for 10 seconds, indicating that the internal air is emptied, testing can be carried out, and if bubbles exist, resetting the pulse signal generator 11 to enable the oil injector 16 to repeatedly operate until the air is exhausted; in the process of pumping oil, observing the action process of the oil ejector 16, if the oil ejector 16 stops suddenly or a stuck phenomenon occurs, indicating that the electrical or internal mechanical parts of the oil ejector 16 are faulty, and testing after the fault is eliminated; if the oil filler 16 works smoothly, it indicates that the oil filler 16 is normal in electrical and mechanical parts.

Starting the test, opening the oil discharge valve 17, manually operating the hydraulic pump 4 to build the pressure of 31.5MPa, setting the pulse signal generator 11 to send out the action pulse for 200 times with the interval time of 2 seconds, and starting the test.

And fourthly, observing the pressure gauge 10 in the operation process of the oil ejector 16, and operating the hydraulic pump 4 to increase the pressure when the pressure is reduced, so as to ensure that the pressure is always kept above 28.5MPa in the test process.

After 200 times of operation, calculating the deviation of the displacement of each plunger in the oil injector 16 from a theoretical design value according to the oil quantity in each measuring cylinder 18, and judging whether the oil injector 16 is qualified according to the deviation.

And sixthly, closing each valve after the test is finished.

When the maintenance system or the oil tank is cleaned, the oil tank bottom relief valve is opened to discharge oil.

Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.