Automatic recycling device for gasoline and diesel oil testing system

Abstract

The utility model discloses an automatic recycling device for a gasoline and diesel oil test system, which comprises a stable oil supply unit and a test engine, an oil outlet of the stable oil supply unit is sequentially connected with an oil outlet pneumatic stop valve and an oil outlet tee joint through pipelines, and a first channel port of the oil outlet tee joint is connected with an oil inlet of the test engine through a pipeline; an oil return port of the stable oil supply unit is sequentially connected with an oil return pneumatic stop valve and an oil return tee joint through pipelines, a first channel port of the oil return tee joint is connected with an oil outlet of a test engine through a pipeline, and a second channel port of the oil outlet tee joint is connected with a recovery unit and a secondary utilization unit through pipelines. A second channel opening of the oil return tee joint is connected with a recycling unit and a secondary utilization unit through a pipeline, and the recycling unit and the secondary utilization unit are connected through a pipeline. According to the automatic recycling device for the gasoline and diesel oil testing system, the problem that gasoline and diesel oil in an engine cannot be recycled after a traditional test in the prior art is solved.

Description

Technical Field

[0001] This utility model relates to the technical field of auxiliary equipment for gasoline and diesel engine testing, and specifically to an automatic recycling and reuse device for gasoline and diesel testing systems. Background Technology

[0002] In the gasoline and diesel engine production process, an ignition test is required after engine assembly, a crucial step to ensure engine performance meets standards. After the test, the gasoline and diesel fuel lines connecting the engine to the fuel supply system need to be disconnected. However, at this time, the gasoline and diesel fuel filling the lines and related circuits will flow out. Statistics show that the average amount of gasoline and diesel fuel flowing out after each engine test is approximately 1.6 liters. If we consider a medium-sized engine manufacturing plant with a monthly output of 2000 engines, the monthly waste of gasoline and diesel fuel due to testing reaches as high as 3200 liters, undoubtedly causing serious energy waste and increasing production costs.

[0003] Meanwhile, the spilled gasoline and diesel fuel will pollute the production site environment. Gasoline and diesel fuel are flammable, explosive, and somewhat toxic substances; their indiscriminate leakage not only pollutes the soil and water sources but also poses a fire hazard, threatening the lives of workers. Cleaning up these spills also requires additional manpower, resources, and time. For example, each cleanup operation may require one worker spending one hour using specialized cleaning equipment and materials, further increasing the company's operating costs.

[0004] Currently, there are very limited solutions on the market for this problem. Traditional methods mostly involve manual cleanup, using tools such as oil-absorbing pads to absorb leaked gasoline and diesel fuel. This method is inefficient and cannot fundamentally solve the problem of energy waste. Utility Model Content

[0005] The purpose of this invention is to provide an automatic recycling and reuse device for gasoline and diesel testing systems, which solves the problem that gasoline and diesel fuel inside the engine cannot be reused after testing in the existing technology.

[0006] The technical solution adopted in this utility model is: an automatic recycling and reuse device for a gasoline and diesel testing system, including a stable fuel supply unit and a test engine. The fuel outlet of the stable fuel supply unit is connected in sequence to a fuel outlet pneumatic shut-off valve and a fuel outlet tee via a pipe. The first channel of the fuel outlet tee is connected to the fuel inlet of the test engine via a pipe. The return port of the stable fuel supply unit is connected in sequence to a return fuel pneumatic shut-off valve and a return fuel tee via a pipe. The first channel of the return fuel tee is connected to the fuel outlet of the test engine via a pipe. The second channel of the fuel outlet tee is connected to a recycling unit and a secondary utilization unit via a pipe. The second channel of the return fuel tee is connected to the recycling unit and the secondary utilization unit via a pipe. The recycling unit and the secondary utilization unit are connected via a pipe.

[0007] The features of this utility model also include:

[0008] The recovery unit includes a first return oil pipe, one end of which is connected to the second channel of the oil outlet tee, and the other end of which is connected to a first return oil pneumatic shut-off valve. The other end of the first return oil pneumatic shut-off valve is connected to a first oil pump via a pipeline. It also includes a second return oil pipe, one end of which is connected to the second channel of the return oil tee, and the other end of which is connected to a second return oil pneumatic shut-off valve. The other end of the second return oil pneumatic shut-off valve is connected to a second oil pump via a pipeline. A first recovery manual valve is installed between the oil outlet tee and the second return oil tee, and a second recovery manual valve is installed between the two. The other ends of the first and second oil pumps are connected to the secondary utilization unit via pipelines.

[0009] The heights of the first oil return gas control shut-off valve, the first oil pump, the second oil return gas control shut-off valve, and the second oil pump are all lower than the height of the test engine.

[0010] A manual oil outlet valve is provided between the stable oil supply unit and the oil outlet pneumatic shut-off valve, and a manual oil return valve is provided between the stable oil supply unit and the oil return pneumatic shut-off valve.

[0011] The secondary utilization unit includes a first pipeline. One end of the first pipeline is connected to a first oil pump and a second oil pump via a tee. The other end of the first pipeline is connected to a first tee. One end of the first tee is connected to a reserved unit via a pipeline. The other end of the first tee is connected to a filter screen and an oil tank via a pipeline. The oil outlet of the oil tank is connected to an oil tank hand valve, an oil tank pump, and a pressure reducing valve via a pipeline. The other end of the pressure reducing valve is connected to a first pneumatic shut-off valve and a second pneumatic shut-off valve in parallel via two pipelines. The other end of the first pneumatic shut-off valve is connected to a first return oil pipe and a first recovery hand valve via a pipeline. The other end of the second pneumatic shut-off valve is connected to a second return oil pipe and a second recovery hand valve via a pipeline.

[0012] The reserved unit includes a reserved pipe, one end of which is connected to the other end of the first tee, and the other end of the reserved pipe is connected to a reserved pneumatic shut-off valve, and the other end of the reserved pneumatic shut-off valve is connected to a reserved pump.

[0013] The secondary utilization unit also includes an overflow valve, one end of which is connected to the inlet of the filter screen through a pipe, and the other end of which is connected to the inlet of the pressure reducing valve through a pipe.

[0014] The pressure reducing valve is also connected to a first pressure gauge and a second pressure gauge via pipes at both ends.

[0015] The beneficial effects of this utility model are: the automatic recycling and reuse device for gasoline and diesel testing systems using this utility model:

[0016] First, energy saving: This device effectively recovers and reuses gasoline and diesel fuel that would otherwise be wasted after testing. Taking a monthly production of 2,000 engines as an example, 1.6 liters of gasoline and diesel fuel can be recovered each month. Based on current market prices, this can save the company approximately 3,200 yuan in fuel costs per month, significantly reducing production costs and improving energy efficiency.

[0017] Secondly, environmental protection: This device significantly reduces the pollution of gasoline and diesel fuel to the production site environment. Before using this device, 1,000 yuan was spent monthly on environmental cleanup and safety protection measures for gasoline and diesel fuel disposal; after using this device, the corresponding cleanup costs and safety risks have also been significantly reduced, effectively ensuring the environmental safety of the production site and the health of the workers.

[0018] Third, it improves production efficiency: the adoption of an automatic back-extraction method reduces the manual cleaning of gasoline and diesel fuel, shortening the production cycle. Actual testing showed that the time for cleaning gasoline and diesel fuel after each engine test was reduced from 60 minutes to 5 minutes, and the inspection time after each engine test was reduced by 20 seconds, improving overall production efficiency and increasing the company's capacity.

[0019] Fourth, reduced labor intensity: The automated recycling and reuse process eliminates the need for workers to perform tedious manual cleaning work, reducing labor intensity, minimizing workers' exposure to hazardous chemicals, and improving work safety and comfort. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the automatic recycling and reuse device for gasoline and diesel testing systems according to this utility model.

[0021] In the diagram: 1. Stable fuel supply unit; 2. Test engine; 3. Recovery unit; 301. First return fuel line; 302. First return fuel pneumatic shut-off valve; 303. First fuel pump; 304. Second return fuel line; 305. Second return fuel pneumatic shut-off valve; 306. Second fuel pump; 4. Outlet fuel pneumatic shut-off valve; 5. Outlet tee; 6. Secondary utilization unit; 601. First pipeline; 602. First tee; 603. Filter screen; 604. Fuel tank; 605. 606. Oil tank manual valve; 607. Oil tank pump; 608. Pressure reducing valve; 609. First pneumatic shut-off valve; 610. Second pneumatic shut-off valve; 611. Reserved pipe; 612. Reserved pneumatic shut-off valve; 613. Reserved pump; 614. Overflow valve; 615. First pressure gauge; 616. Second pressure gauge; 7. Return oil pneumatic shut-off valve; 8. Return oil tee; 9. First recovery manual valve; 10. Second recovery manual valve; 11. Oil outlet manual valve; 12. Return oil manual valve. Detailed Implementation

[0022] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0023] like Figure 1 As shown, this utility model provides an automatic recycling and reuse device for a gasoline and diesel testing system, including a stable fuel supply unit 1 and a test engine 2. The fuel outlet of the stable fuel supply unit 1 is connected in sequence to a fuel outlet pneumatic shut-off valve 4 and a fuel outlet tee 5 via pipes. The first channel of the fuel outlet tee 5 is connected to the fuel inlet of the test engine 2 via a pipe. The return fuel outlet of the stable fuel supply unit 1 is connected in sequence to a return fuel pneumatic shut-off valve 7 and a return fuel tee 8 via pipes. The first channel of the return fuel tee 8 is connected to the fuel outlet of the test engine 2 via a pipe. The second channel of the fuel outlet tee 5 is connected to a recycling unit 3 and a secondary utilization unit 6 via pipes. The second channel of the return fuel tee 8 is connected to the recycling unit 3 and the secondary utilization unit 6 via pipes. The recycling unit 3 and the secondary utilization unit 6 are connected via pipes.

[0024] The recovery unit 3 includes a first return oil pipe 301, one end of which is connected to the second channel of the oil outlet tee 5, and the other end of which is connected to a first return oil pneumatic shut-off valve 302. The other end of the first return oil pneumatic shut-off valve 302 is connected to a first oil pump 303 via a pipeline. It also includes a second return oil pipe 304, one end of which is connected to the second channel of the return oil tee 8, and the other end of which is connected to a second return oil pneumatic shut-off valve 305. The other end of the second return oil pneumatic shut-off valve 305 is connected to a second oil pump 306 via a pipeline. A first recovery manual valve 9 is provided between the oil outlet tee 5 and 301, and a second recovery manual valve 10 is provided between the return oil tee 8 and 304. The other ends of the first oil pump 303 and the second oil pump 306 are connected to the secondary utilization unit 6 via pipelines.

[0025] The heights of the first oil return gas control shut-off valve 302, the first oil pump 303, the second oil return gas control shut-off valve 305, and the second oil pump 306 are all lower than the height of the test engine 2.

[0026] A manual oil outlet valve 11 is provided between the stable oil supply unit 1 and the oil outlet pneumatic shut-off valve 4, and a manual oil return valve 12 is provided between the stable oil supply unit 1 and the oil return pneumatic shut-off valve 7.

[0027] The secondary utilization unit 6 includes a first pipeline 601. One end of the first pipeline 601 is connected to the first oil pump 303 and the second oil pump 306 via a tee. The other end of the first pipeline 601 is connected to a first tee 602. One end of the first tee 602 is connected to a reserved unit via a pipeline. The other end of the first tee 602 is connected to a filter screen 603 and an oil tank 604 via a pipeline. The oil outlet of the oil tank 604 is connected to an oil tank hand valve 605, an oil tank pump 606, and a pressure reducing valve 607 via a pipeline. Its function is to reduce the pressure of gasoline and diesel to meet the pressure requirements of different working stages. The other end of the pressure reducing valve 607 is connected to a first pneumatic shut-off valve 608 and a second pneumatic shut-off valve 609 in parallel via two pipelines. The other end of the first pneumatic shut-off valve 608 is connected to the first return oil pipe 301 and the first recovery hand valve 9 via a pipeline. The other end of the second pneumatic shut-off valve 609 is connected to the second return oil pipe 304 and the second recovery hand valve via a pipeline.

[0028] The reserved unit includes a reserved pipe 610, one end of which is connected to the other end of the first tee 602. The other end of the reserved pipe 610 is connected to a reserved pneumatic control shut-off valve 611, and the other end of the reserved pneumatic control shut-off valve 611 is connected to a reserved pump 612. The reserved unit, including the reserved pneumatic control shut-off valve 611 and the reserved pump 612, serves as a reserve, primarily preparing for potential external extraction and circulation functions in the future. If production processes or testing requirements change in the future, necessitating external extraction and circulation of gasoline and diesel fuel from the unit, this function can be achieved by controlling the operation of the reserved pneumatic control shut-off valve 611 and the reserved pump 612.

[0029] The secondary utilization unit 6 also includes an overflow valve 613, which is used to overflow excess gasoline and diesel fuel back to the fuel tank when the system pressure is too high, so as to ensure the safe operation of the system. One end of the overflow valve 613 is connected to the inlet of the filter screen 603 through a pipe, and the other end of the overflow valve 613 is connected to the inlet of the pressure reducing valve 607 through a pipe.

[0030] The pressure reducing valve 607 is also connected to a first pressure gauge 614 and a second pressure gauge 615 via pipes at both ends.

[0031] The stable oil supply unit 1 is composed of an oil supply pump, a pressure reducing valve, a pressure relief valve, etc., and is an important component of this device. It is existing technology.

[0032] The automatic recycling and reuse device for a gasoline and diesel fuel testing system provided by this utility model operates as follows: When the engine is not being tested, all pneumatic control shut-off valves are in their normal positions. During engine testing, in the pre-charging phase of the recirculation system, the first pneumatic control shut-off valve 608 and the second pneumatic control shut-off valve 609 are energized and opened, and the fuel tank pump 606 starts, injecting gasoline and diesel fuel into the inlet and outlet of the test engine 2 through pipelines. In the recirculation phase, after the test is completed, the outlet pneumatic control shut-off valve 4 and the return pneumatic control shut-off valve 7 are de-energized and closed, disconnecting the large circulation system; during the water blowing time recirculation, the first return pneumatic control shut-off valve 302 and the second return pneumatic control shut-off valve 305 are opened, and the first fuel pump 303 and the second fuel pump 306 start, drawing the gasoline and diesel fuel in the circuit back into the fuel tank 604.

[0033] When the test is completed and the retraction phase begins, the control system issues a command to open the first return gas control shut-off valve 302 and the second return gas control shut-off valve 305, and to start the first oil pump 303 and the second oil pump 306. The first oil pump 303 and the second oil pump 306 operate according to a preset program and parameters, retracting the test circuit at a certain flow rate and pressure. During the retraction process, the retraction flow rate is monitored in real time by a flow sensor installed in the pipeline. When the flow sensor detects no flow in the retraction pipeline, indicating that the gasoline and diesel fuel in the circuit has been essentially exhausted, the control system issues a command to de-energize and close the first return gas control shut-off valve 302 and the second return gas control shut-off valve 305, and to stop the first oil pump 303 and the second oil pump 306.

[0034] The core equipment of the secondary utilization unit is the fuel tank pump 606, which is also equipped with an overflow valve 613 and a pressure reducing valve 607. The selection of the fuel tank pump 606 needs to consider the flow rate of recovered gasoline and diesel fuel and the pressure requirements during reuse. The overflow valve and pressure reducing valve are selected and installed according to the system's operating pressure range to ensure precise pressure control of the pre-charge circuit. During installation, attention should be paid to the connection sequence and installation direction of each piece of equipment to ensure its normal operation.

[0035] Example 1

[0036] like Figure 1As shown, the automatic recycling and reuse device for a gasoline and diesel testing system proposed in this embodiment includes a stable fuel supply unit 1 and a test engine 2. The fuel outlet of the stable fuel supply unit 1 is connected in sequence to a fuel outlet pneumatic shut-off valve 4 and a fuel outlet tee 5 via pipes. The first channel of the fuel outlet tee 5 is connected to the fuel inlet of the test engine 2 via a pipe. The return fuel outlet of the stable fuel supply unit 1 is connected in sequence to a return fuel pneumatic shut-off valve 7 and a return fuel tee 8 via pipes. The first channel of the return fuel tee 8 is connected to the fuel outlet of the test engine 2 via a pipe. The second channel of the fuel outlet tee 5 is connected to a recycling unit 3 and a secondary utilization unit 6 via pipes. The second channel of the return fuel tee 8 is connected to the recycling unit 3 and the secondary utilization unit 6 via pipes. The recycling unit 3 and the secondary utilization unit 6 are connected via pipes. The recovery unit 3 includes a first return oil pipe 301, one end of which is connected to the second channel of the oil outlet tee 5, and the other end of which is connected to a first return oil pneumatic shut-off valve 302. The other end of the first return oil pneumatic shut-off valve 302 is connected to a first oil pump 303 via a pipeline. It also includes a second return oil pipe 304, one end of which is connected to the second channel of the return oil tee 8, and the other end of which is connected to a second return oil pneumatic shut-off valve 305. The other end of the second return oil pneumatic shut-off valve 305 is connected to a second oil pump 306 via a pipeline. A first recovery manual valve 9 is provided between the oil outlet tee 5 and 301, and a second recovery manual valve 10 is provided between the return oil tee 8 and 304. The other ends of the first oil pump 303 and the second oil pump 306 are connected to the secondary utilization unit 6 via pipelines.

[0037] Example 2

[0038] like Figure 1As shown, the automatic recycling and reuse device for a gasoline and diesel testing system proposed in this embodiment includes a stable fuel supply unit 1 and a test engine 2. The fuel outlet of the stable fuel supply unit 1 is connected in sequence to a fuel outlet pneumatic shut-off valve 4 and a fuel outlet tee 5 via pipes. The first channel of the fuel outlet tee 5 is connected to the fuel inlet of the test engine 2 via a pipe. The return fuel outlet of the stable fuel supply unit 1 is connected in sequence to a return fuel pneumatic shut-off valve 7 and a return fuel tee 8 via pipes. The first channel of the return fuel tee 8 is connected to the fuel outlet of the test engine 2 via a pipe. The second channel of the fuel outlet tee 5 is connected to a recycling unit 3 and a secondary utilization unit 6 via pipes. The second channel of the return fuel tee 8 is connected to the recycling unit 3 and the secondary utilization unit 6 via pipes. The recycling unit 3 and the secondary utilization unit 6 are connected via pipes. The recovery unit 3 includes a first return oil pipe 301, one end of which is connected to the second channel of the oil outlet tee 5, and the other end of which is connected to a first return oil pneumatic shut-off valve 302. The other end of the first return oil pneumatic shut-off valve 302 is connected to a first oil pump 303 via a pipeline. It also includes a second return oil pipe 304, one end of which is connected to the second channel of the return oil tee 8, and the other end of which is connected to a second return oil pneumatic shut-off valve 305. The other end of the second return oil pneumatic shut-off valve 305 is connected to a second oil pump 306 via a pipeline. A first recovery manual valve 9 is provided between the oil outlet tee 5 and 301, and a second recovery manual valve 10 is provided between the return oil tee 8 and 304. The other ends of the first oil pump 303 and the second oil pump 306 are connected to the secondary utilization unit 6 via pipelines. The heights of the first oil return gas control shut-off valve 302, the first oil pump 303, the second oil return gas control shut-off valve 305, and the second oil pump 306 are all lower than the height of the test engine 2.

[0039] Example 3

[0040] like Figure 1As shown, the automatic recycling and reuse device for a gasoline and diesel testing system proposed in this embodiment includes a stable fuel supply unit 1 and a test engine 2. The fuel outlet of the stable fuel supply unit 1 is connected in sequence to a fuel outlet pneumatic shut-off valve 4 and a fuel outlet tee 5 via pipes. The first channel of the fuel outlet tee 5 is connected to the fuel inlet of the test engine 2 via a pipe. The return fuel outlet of the stable fuel supply unit 1 is connected in sequence to a return fuel pneumatic shut-off valve 7 and a return fuel tee 8 via pipes. The first channel of the return fuel tee 8 is connected to the fuel outlet of the test engine 2 via a pipe. The second channel of the fuel outlet tee 5 is connected to a recycling unit 3 and a secondary utilization unit 6 via pipes. The second channel of the return fuel tee 8 is connected to the recycling unit 3 and the secondary utilization unit 6 via pipes. The recycling unit 3 and the secondary utilization unit 6 are connected via pipes. The recovery unit 3 includes a first return oil pipe 301, one end of which is connected to the second channel of the oil outlet tee 5, and the other end of which is connected to a first return oil pneumatic shut-off valve 302. The other end of the first return oil pneumatic shut-off valve 302 is connected to a first oil pump 303 via a pipeline. It also includes a second return oil pipe 304, one end of which is connected to the second channel of the return oil tee 8, and the other end of which is connected to a second return oil pneumatic shut-off valve 305. The other end of the second return oil pneumatic shut-off valve 305 is connected to a second oil pump 306 via a pipeline. A first recovery manual valve 9 is provided between the oil outlet tee 5 and 301, and a second recovery manual valve 10 is provided between the return oil tee 8 and 304. The other ends of the first oil pump 303 and the second oil pump 306 are connected to the secondary utilization unit 6 via pipelines. The heights of the first return oil pneumatic control shut-off valve 302, the first oil pump 303, the second return oil pneumatic control shut-off valve 305, and the second oil pump 306 are all lower than the height of the test engine 2. An oil outlet manual valve 11 is provided between the stable oil supply unit 1 and the oil outlet pneumatic control shut-off valve 4, and an oil return manual valve 12 is provided between the stable oil supply unit 1 and the return oil pneumatic control shut-off valve 7.

[0041] Example 4

[0042] like Figure 1As shown, the automatic recycling and reuse device for a gasoline and diesel testing system proposed in this embodiment includes a stable fuel supply unit 1 and a test engine 2. The fuel outlet of the stable fuel supply unit 1 is connected in sequence to a fuel outlet pneumatic shut-off valve 4 and a fuel outlet tee 5 via pipes. The first channel of the fuel outlet tee 5 is connected to the fuel inlet of the test engine 2 via a pipe. The return fuel outlet of the stable fuel supply unit 1 is connected in sequence to a return fuel pneumatic shut-off valve 7 and a return fuel tee 8 via pipes. The first channel of the return fuel tee 8 is connected to the fuel outlet of the test engine 2 via a pipe. The second channel of the fuel outlet tee 5 is connected to a recycling unit 3 and a secondary utilization unit 6 via pipes. The second channel of the return fuel tee 8 is connected to the recycling unit 3 and the secondary utilization unit 6 via pipes. The recycling unit 3 and the secondary utilization unit 6 are connected via pipes. The recovery unit 3 includes a first return oil pipe 301, one end of which is connected to the second channel of the oil outlet tee 5, and the other end of which is connected to a first return oil pneumatic shut-off valve 302. The other end of the first return oil pneumatic shut-off valve 302 is connected to a first oil pump 303 via a pipeline. It also includes a second return oil pipe 304, one end of which is connected to the second channel of the return oil tee 8, and the other end of which is connected to a second return oil pneumatic shut-off valve 305. The other end of the second return oil pneumatic shut-off valve 305 is connected to a second oil pump 306 via a pipeline. A first recovery manual valve 9 is provided between the oil outlet tee 5 and 301, and a second recovery manual valve 10 is provided between the return oil tee 8 and 304. The other ends of the first oil pump 303 and the second oil pump 306 are connected to the secondary utilization unit 6 via pipelines. The heights of the first return oil pneumatic control shut-off valve 302, the first oil pump 303, the second return oil pneumatic control shut-off valve 305, and the second oil pump 306 are all lower than the height of the test engine 2. An oil outlet manual valve 11 is provided between the stable oil supply unit 1 and the oil outlet pneumatic control shut-off valve 4, and an oil return manual valve 12 is provided between the stable oil supply unit 1 and the return oil pneumatic control shut-off valve 7. The secondary utilization unit 6 includes a first pipe 601. One end of the first pipe 601 is connected to the first oil pump 303 and the second oil pump 306 via a tee. The other end of the first pipe 601 is connected to a first tee 602. One end of the first tee 602 is connected to a reserved unit via a pipe. The other end of the first tee 602 is connected to a filter screen 603 and an oil tank 604 via a pipe. The oil outlet of the oil tank 604 is connected to an oil tank hand valve 605, an oil tank pump 606, and a pressure reducing valve 607 via a pipe. The other end of the pressure reducing valve 607 is connected to a first pneumatic shut-off valve 608 and a second pneumatic shut-off valve 609 in parallel via two pipes. The other end of the first pneumatic shut-off valve 608 is connected to the first return oil pipe 301 and the first recovery hand valve 9 via a pipe. The other end of the second pneumatic shut-off valve 609 is connected to the second return oil pipe 304 and the second recovery hand valve via a pipe.

[0043] Example 5

[0044] like Figure 1As shown, the automatic recycling and reuse device for a gasoline and diesel testing system proposed in this embodiment includes a stable fuel supply unit 1 and a test engine 2. The fuel outlet of the stable fuel supply unit 1 is connected in sequence to a fuel outlet pneumatic shut-off valve 4 and a fuel outlet tee 5 via pipes. The first channel of the fuel outlet tee 5 is connected to the fuel inlet of the test engine 2 via a pipe. The return fuel outlet of the stable fuel supply unit 1 is connected in sequence to a return fuel pneumatic shut-off valve 7 and a return fuel tee 8 via pipes. The first channel of the return fuel tee 8 is connected to the fuel outlet of the test engine 2 via a pipe. The second channel of the fuel outlet tee 5 is connected to a recycling unit 3 and a secondary utilization unit 6 via pipes. The second channel of the return fuel tee 8 is connected to the recycling unit 3 and the secondary utilization unit 6 via pipes. The recycling unit 3 and the secondary utilization unit 6 are connected via pipes. The recovery unit 3 includes a first return oil pipe 301, one end of which is connected to the second channel of the oil outlet tee 5, and the other end of which is connected to a first return oil pneumatic shut-off valve 302. The other end of the first return oil pneumatic shut-off valve 302 is connected to a first oil pump 303 via a pipeline. It also includes a second return oil pipe 304, one end of which is connected to the second channel of the return oil tee 8, and the other end of which is connected to a second return oil pneumatic shut-off valve 305. The other end of the second return oil pneumatic shut-off valve 305 is connected to a second oil pump 306 via a pipeline. A first recovery manual valve 9 is provided between the oil outlet tee 5 and 301, and a second recovery manual valve 10 is provided between the return oil tee 8 and 304. The other ends of the first oil pump 303 and the second oil pump 306 are connected to the secondary utilization unit 6 via pipelines. The heights of the first return oil pneumatic control shut-off valve 302, the first oil pump 303, the second return oil pneumatic control shut-off valve 305, and the second oil pump 306 are all lower than the height of the test engine 2. An oil outlet manual valve 11 is provided between the stable oil supply unit 1 and the oil outlet pneumatic control shut-off valve 4, and an oil return manual valve 12 is provided between the stable oil supply unit 1 and the return oil pneumatic control shut-off valve 7. The secondary utilization unit 6 includes a first pipe 601. One end of the first pipe 601 is connected to the first oil pump 303 and the second oil pump 306 via a tee. The other end of the first pipe 601 is connected to a first tee 602. One end of the first tee 602 is connected to a reserved unit via a pipe. The other end of the first tee 602 is connected to a filter screen 603 and an oil tank 604 via a pipe. The oil outlet of the oil tank 604 is connected to an oil tank hand valve 605, an oil tank pump 606, and a pressure reducing valve 607 via a pipe. The other end of the pressure reducing valve 607 is connected to a first pneumatic shut-off valve 608 and a second pneumatic shut-off valve 609 in parallel via two pipes. The other end of the first pneumatic shut-off valve 608 is connected to the first return oil pipe 301 and the first recovery hand valve 9 via a pipe. The other end of the second pneumatic shut-off valve 609 is connected to the second return oil pipe 304 and the second recovery hand valve via a pipe.The reserved unit includes a reserved pipe 610, one end of which is connected to the other end of the first tee 602, and the other end of the reserved pipe 610 is connected to a reserved pneumatic shut-off valve 611, and the other end of the reserved pneumatic shut-off valve 611 is connected to a reserved pump 612.

[0045] Example 6

[0046] like Figure 1As shown, the automatic recycling and reuse device for a gasoline and diesel testing system proposed in this embodiment includes a stable fuel supply unit 1 and a test engine 2. The fuel outlet of the stable fuel supply unit 1 is connected in sequence to a fuel outlet pneumatic shut-off valve 4 and a fuel outlet tee 5 via pipes. The first channel of the fuel outlet tee 5 is connected to the fuel inlet of the test engine 2 via a pipe. The return fuel outlet of the stable fuel supply unit 1 is connected in sequence to a return fuel pneumatic shut-off valve 7 and a return fuel tee 8 via pipes. The first channel of the return fuel tee 8 is connected to the fuel outlet of the test engine 2 via a pipe. The second channel of the fuel outlet tee 5 is connected to a recycling unit 3 and a secondary utilization unit 6 via pipes. The second channel of the return fuel tee 8 is connected to the recycling unit 3 and the secondary utilization unit 6 via pipes. The recycling unit 3 and the secondary utilization unit 6 are connected via pipes. The recovery unit 3 includes a first return oil pipe 301, one end of which is connected to the second channel of the oil outlet tee 5, and the other end of which is connected to a first return oil pneumatic shut-off valve 302. The other end of the first return oil pneumatic shut-off valve 302 is connected to a first oil pump 303 via a pipeline. It also includes a second return oil pipe 304, one end of which is connected to the second channel of the return oil tee 8, and the other end of which is connected to a second return oil pneumatic shut-off valve 305. The other end of the second return oil pneumatic shut-off valve 305 is connected to a second oil pump 306 via a pipeline. A first recovery manual valve 9 is provided between the oil outlet tee 5 and 301, and a second recovery manual valve 10 is provided between the return oil tee 8 and 304. The other ends of the first oil pump 303 and the second oil pump 306 are connected to the secondary utilization unit 6 via pipelines. The heights of the first return oil pneumatic control shut-off valve 302, the first oil pump 303, the second return oil pneumatic control shut-off valve 305, and the second oil pump 306 are all lower than the height of the test engine 2. An oil outlet manual valve 11 is provided between the stable oil supply unit 1 and the oil outlet pneumatic control shut-off valve 4, and an oil return manual valve 12 is provided between the stable oil supply unit 1 and the return oil pneumatic control shut-off valve 7. The secondary utilization unit 6 includes a first pipe 601. One end of the first pipe 601 is connected to the first oil pump 303 and the second oil pump 306 via a tee. The other end of the first pipe 601 is connected to a first tee 602. One end of the first tee 602 is connected to a reserved unit via a pipe. The other end of the first tee 602 is connected to a filter screen 603 and an oil tank 604 via a pipe. The oil outlet of the oil tank 604 is connected to an oil tank hand valve 605, an oil tank pump 606, and a pressure reducing valve 607 via a pipe. The other end of the pressure reducing valve 607 is connected to a first pneumatic shut-off valve 608 and a second pneumatic shut-off valve 609 in parallel via two pipes. The other end of the first pneumatic shut-off valve 608 is connected to the first return oil pipe 301 and the first recovery hand valve 9 via a pipe. The other end of the second pneumatic shut-off valve 609 is connected to the second return oil pipe 304 and the second recovery hand valve via a pipe.The reserved unit includes a reserved pipe 610, one end of which is connected to the other end of the first tee 602, and the other end of the reserved pipe 610 is connected to a reserved pneumatic shut-off valve 611. The other end of the reserved pneumatic shut-off valve 611 is connected to a reserved pump 612. The secondary utilization unit 6 also includes an overflow valve 613, one end of which is connected to the inlet of the filter screen 603 via a pipe, and the other end of which is connected to the inlet of the pressure reducing valve 607 via a pipe. The two ends of the pressure reducing valve 607 are also connected to a first pressure gauge 614 and a second pressure gauge 615 via pipes, respectively.

Claims

1. An automatic recycling and reuse device for gasoline and diesel fuel testing systems, characterized in that, The system includes a stable fuel supply unit (1) and a test engine (2). The oil outlet of the stable fuel supply unit (1) is connected in sequence to an oil outlet pneumatic shut-off valve (4) and an oil outlet tee (5) via a pipe. The first channel of the oil outlet tee (5) is connected to the oil inlet of the test engine (2) via a pipe. The oil return port of the stable fuel supply unit (1) is connected in sequence to a return oil pneumatic shut-off valve (7) and a return oil tee (8) via a pipe. The first channel of the return oil tee (8) is connected to the oil outlet of the test engine (2) via a pipe. The second channel of the oil outlet tee (5) is connected to a recycling unit (3) and a secondary utilization unit (6) via a pipe. The second channel of the return oil tee (8) is connected to the recycling unit (3) and the secondary utilization unit (6) via a pipe. The recycling unit (3) and the secondary utilization unit (6) are connected via a pipe.

2. The automatic recycling and reuse device for a gasoline and diesel testing system according to claim 1, characterized in that, The recovery unit (3) includes a first return oil pipe (301), one end of which is connected to the second channel of the oil outlet tee (5), and the other end of which is connected to a first return oil pneumatic shut-off valve (302). The other end of the first return oil pneumatic shut-off valve (302) is connected to a first oil pump (303) via a pipeline. It also includes a second return oil pipe (304), one end of which is connected to the second channel of the return oil tee (8). The other end of the second return oil pipe (304) is connected to the second return oil pneumatic shut-off valve (305), and the other end of the second return oil pneumatic shut-off valve (305) is connected to the second oil pump (306) through a pipeline; a first recovery hand valve (9) is provided between the oil outlet tee (5) and (301), and a second recovery hand valve (10) is provided between the oil return tee (8) and (304); the other end of the first oil pump (303) and the other end of the second oil pump (306) are connected to the secondary utilization unit (6) through a pipeline.

3. The automatic recycling and reuse device for a gasoline and diesel testing system according to claim 2, characterized in that, The heights of the first return gas control shut-off valve (302), the first oil pump (303), the second return gas control shut-off valve (305), and the second oil pump (306) are all lower than the height of the test engine (2).

4. The automatic recycling and reuse device for a gasoline and diesel testing system according to claim 3, characterized in that, An oil outlet manual valve (11) is provided between the stable oil supply unit (1) and the oil outlet pneumatic shut-off valve (4), and an oil return manual valve (12) is provided between the stable oil supply unit (1) and the oil return pneumatic shut-off valve (7).

5. The automatic recycling and reuse device for a gasoline and diesel testing system according to claim 4, characterized in that, The secondary utilization unit (6) includes a first pipe (601). One end of the first pipe (601) is connected to the first oil pump (303) and the second oil pump (306) via a tee. The other end of the first pipe (601) is connected to a first tee (602). One end of the first tee (602) is connected to a reserved unit via a pipe. The other end of the first tee (602) is connected to a filter screen (603) and an oil tank (604) in sequence via a pipe. The oil outlet of the oil tank (604) is connected via... The pipeline is connected in sequence to the oil tank hand valve (605), the oil tank pump (606) and the pressure reducing valve (607). The other end of the pressure reducing valve (607) is connected in parallel to the first pneumatic shut-off valve (608) and the second pneumatic shut-off valve (609) through two pipelines. The other end of the first pneumatic shut-off valve (608) is connected to the first return oil pipe (301) and the first recovery hand valve (9) through a pipeline. The other end of the second pneumatic shut-off valve (609) is connected to the second return oil pipe (304) and the second recovery hand valve (10) through a pipeline.

6. The automatic recycling and reuse device for a gasoline and diesel testing system according to claim 5, characterized in that, The reserved unit includes a reserved pipe (610), one end of which is connected to the other end of the first tee (602), and the other end of the reserved pipe (610) is connected to a reserved pneumatic shut-off valve (611), and the other end of the reserved pneumatic shut-off valve (611) is connected to a reserved pump (612).

7. The automatic recycling and reuse device for a gasoline and diesel testing system according to claim 6, characterized in that, The secondary utilization unit (6) also includes an overflow valve (613), one end of which is connected to the inlet of the filter screen (603) through a pipe, and the other end of which is connected to the inlet of the pressure reducing valve (607) through a pipe.

8. The automatic recycling and reuse device for a gasoline and diesel testing system according to claim 7, characterized in that, The pressure reducing valve (607) is also connected to a first pressure gauge (614) and a second pressure gauge (615) via pipes at both ends.

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