A super-flow refueling equipment testing device

Abstract

The utility model discloses a kind of super-large flow refueling equipment testing devices, including motor pump and respectively installed in motor pump input and output end's oil inlet system and oil outlet system, the motor pump includes self-priming pump and motor, the performance of the self-priming pump includes 400RPM~640RPM and maximum flow 500L / min~1000L / min, the power range of the motor is 4kW~7.5KW;The oil inlet system includes oil inlet pipeline, the both ends of the oil inlet pipeline are connected oil tank and motor pump, the diameter range of the oil inlet pipeline is 3 inches~4 inches, length is less than or equal to 10 meters;The oil outlet system includes oil outlet pipeline, the both ends of the oil outlet pipeline are connected motor pump and refueling equipment, the diameter range of the oil outlet pipeline is 2 inches~3 inches, length is less than or equal to 50 meters, and the diameter of oil inlet pipeline is greater than the diameter of oil outlet pipeline.The utility model is simple to install, convenient to operate, solve the short distance test demand of 500L / min super-large flow refueling equipment.

Description

Technical Field

[0001] This utility model belongs to the field of refueling equipment testing technology, specifically, it relates to a testing device for ultra-high flow refueling equipment. Background Technology

[0002] Currently, the highest flow rate of refueling equipment on the market reaches 500 L / min. To meet the requirements for type evaluation and factory testing of refueling equipment, the testing equipment for refueling equipment needs to reach 500 ± 10% L / min. However, the existing testing equipment usually uses two 2-horsepower submersible pumps connected in parallel, and then two oil outlet pipes are combined into one pipeline to the fuel dispenser. A frequency converter for the submersible pump is added. By adjusting the frequency of the pump frequency converter, the highest flow rate can only reach about 360 L / min, which does not meet the requirement of 500 ± 10% L / min. Moreover, this device has the disadvantages of high cost, complex installation, and long oil delivery pipeline from the oil tank.

[0003] Meanwhile, after the existing refueling equipment is tested, the testing device does not drain the test liquid remaining inside the refueling equipment. There is a risk of test liquid being carried away by the refueling equipment and a risk of test liquid leakage during transportation.

[0004] In addition, when the refueling equipment starts pumping oil, a loud bang can be heard, and the impact is extremely strong. This can easily damage the parts of the refueling equipment itself and cause leakage in the pipe joints of the testing device. However, most of the existing testing devices use steel pipes for the oil inlet pipes, which do not take into account the impact of the oil pressure on the refueling equipment and pipes.

[0005] Therefore, in order to solve the above-mentioned technical problems, it is urgent to design a testing device for ultra-high flow refueling equipment. Utility Model Content

[0006] To address the shortcomings of existing technologies, this utility model provides a testing device for ultra-high flow refueling equipment. This testing device is simple to install and easy to operate, solving the short-distance testing needs of 500L / min ultra-high flow refueling equipment.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] A testing device for ultra-high flow refueling equipment includes a motor pump and an oil inlet system and an oil outlet system respectively installed at the input and output ends of the motor pump.

[0009] The electric pump includes a self-priming pump and a motor. The performance of the self-priming pump includes a speed of 400 RPM to 640 RPM and a maximum flow rate of 500 L / min to 1000 L / min. The power range of the motor is 4 kW to 7.5 kW.

[0010] The oil inlet system includes an oil inlet pipe, with an oil tank and a motor pump connected to its two ends respectively. The diameter of the oil inlet pipe is 3 to 4 inches and its length is less than or equal to 10 meters. The oil outlet system includes an oil outlet pipe, with a motor pump and a refueling device connected to its two ends respectively. The diameter of the oil outlet pipe is 2 to 3 inches and its length is less than or equal to 50 meters. The diameter of the oil inlet pipe is larger than the diameter of the oil outlet pipe.

[0011] Preferably, the oil inlet pipe includes a pump end oil inlet pipe connected to the motor pump. The pump end oil inlet pipe is connected to a first ball valve and an inlet ball valve respectively through a first tee. The first ball valve is connected to the oil tank through a tank end oil inlet pipe, and the inlet ball valve is connected to the oil tank through an exhaust pipe.

[0012] Preferably, the oil inlet system further includes a bellows, which is connected in series between the pump-end oil inlet pipe and the first ball valve, and the size range of the bellows is consistent with that of the oil inlet pipe.

[0013] Preferably, the oil inlet system further includes a filter with a one-way valve, which is installed at the input end of the pump-side oil inlet pipe, and the size range of the filter with the one-way valve is consistent with that of the oil inlet pipe.

[0014] Preferably, the oil outlet pipe includes a pump outlet pipe connected to the motor pump, and the pump outlet pipe is connected to two second ball valves respectively through a second tee. Each second ball valve is connected to a corresponding hose, and the hose is connected to the refueling equipment through a flange joint.

[0015] Preferably, the first tee is a reducing tee.

[0016] Preferably, the size range of the inlet balloon valve is 0.5 inches to 2 inches.

[0017] Preferably, the corrugated pipe is made of stainless steel.

[0018] Preferably, the length of the oil inlet pipe at the tank end is in the range of 500mm to 800mm.

[0019] Compared with the prior art, the beneficial effects of this utility model include:

[0020] (1) This utility model provides a test device for ultra-large flow refueling equipment. By using a motor pump with preset performance (including speed and maximum flow) and an oil inlet pipe and an oil outlet pipe with preset size range (including pipe diameter and length), wherein the diameter range of the oil inlet pipe is 3 inches to 4 inches, the above configuration scheme ensures that the oil delivery space of the oil inlet pipe is large enough and the transmission pipeline of the test liquid is not too long. After starting the motor pump, it can meet the maximum flow rate requirement of 500±10%L / min, thus solving the short-distance testing requirement of 500L / min ultra-large flow refueling equipment.

[0021] (2) By using a first ball valve and an exhaust ball valve, after the refueling equipment is tested, the first ball valve is closed and the inlet ball valve is opened. At this time, the motor pump continues to run, and a large amount of air will be sucked in by the self-priming pump with the motor. The sucked air reaches the oil outlet pipe with the operation of the pump, and discharges the oil left in the oil outlet pipe and the refueling equipment. This can quickly empty the test liquid in the refueling equipment, reduce the loss of residual test liquid carried away by the refueling equipment, and avoid the risk of test liquid leakage during transportation.

[0022] (3) By installing a bellows between the oil inlet pipe at the pump end and the first ball valve, this utility model can effectively buffer the pressure impact of the oil on the refueling equipment. It also facilitates the overall assembly of the test device, solving the problem that in the prior art, most of the test oil inlet pipes are connected by steel pipes, and the impact of the oil on the refueling equipment and pipeline pressure is not considered.

[0023] (4) By using a filter with a one-way valve, this utility model can clean the test liquid entering the refueling equipment from the source (oil tank), and after the test is completed, it ensures that the test liquid in the oil inlet system does not flow back into the oil tank, so that the refueling equipment can quickly add oil when the motor pump is started next time, without having to wait too long for the pump oil-gas separation, thus improving the testing efficiency.

[0024] (5) This utility model divides the oil outlet path into two branches through the second three-way valve. Each branch includes a second ball valve and a rubber hose. This setting enables the testing needs of two different work stations to be met without moving the bulky rubber hose. The test personnel can operate more effortlessly, which increases convenience and practicality. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall structure of a testing device for ultra-high flow refueling equipment according to this utility model.

[0026] Among them, 1 is a filter with a one-way valve, 2 is the oil inlet pipe at the tank end, 3 is a bellows, 4 is the first ball valve, 5 is the first tee, 6 is the inlet ball valve, 7 is the oil inlet pipe at the pump end, 8 is the motor pump, 9 is the pump outlet pipe, 10 is the second tee, 11 is the second ball valve, 12 is a rubber hose, 13 is a flange joint, and 14 is a connecting pipe. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only for explaining the present utility model and are not intended to limit the present utility model.

[0028] Example

[0029] like Figure 1 The diagram shows the overall structure of a high-flow refueling equipment testing device, including a motor pump and an oil inlet system and an oil outlet system installed at the input and output ends of the motor pump, respectively. The motor pump includes a self-priming pump and a motor. The performance of the self-priming pump includes a speed of 400RPM to 640RPM and a maximum flow rate of 500L / min to 1000L / min. The power range of the motor is 4kW to 7.5kW. The oil inlet system includes an oil inlet pipe, with its two ends connected to an oil tank and the motor pump, respectively. The diameter of the oil inlet pipe is 3 inches to 4 inches, and its length is less than or equal to 10 meters. The oil outlet system includes an oil outlet pipe, with its two ends connected to the motor pump and the refueling equipment, respectively. The diameter of the oil outlet pipe is 2 inches to 3 inches, and its length is less than or equal to 50 meters. The diameter of the oil inlet pipe is larger than the diameter of the oil outlet pipe.

[0030] This invention provides a testing device for ultra-high flow refueling equipment. It employs a motor pump with preset performance (including speed and maximum flow rate) and inlet and outlet pipes with preset size ranges (including pipe diameter and length), wherein the diameter of the inlet pipe ranges from 3 inches to 4 inches. In this embodiment, the length of the inlet pipe at the tank end ranges from 500 mm to 800 mm. This configuration ensures that the oil delivery space in the inlet pipe is sufficiently large and the transmission pipeline for the test liquid is not too long. After starting the motor pump, it can meet the maximum flow rate requirement of 500 ± 10% L / min, thus solving the short-distance testing requirement for 500 L / min ultra-high flow refueling equipment.

[0031] Specifically, in this embodiment, a self-priming pump is used, and its performance includes: a diameter of 2.5 to 3 inches, a vacuum of 0.5 Bar, and a working pressure of 5 Bar; the selected motor pulley is a three-groove V-belt pulley with a diameter not less than [missing information]. In this embodiment, the inlet pipe can be 3 inches and the outlet pipe can be 2 inches. The diameter of the inlet pipe used in the self-priming pump is larger than the diameter of the outlet pipe. This configuration principle has the following advantages: (1) Reduced suction resistance: The larger inlet pipe diameter can reduce the resistance of the liquid during the suction process, making it easier for the liquid to enter the pump, thereby reducing the risk of cavitation and improving the pump's self-priming ability; (2) Maintaining flow balance: The larger inlet pipe diameter can ensure that enough liquid enters the pump, avoiding the decrease in flow rate or the reduction in pump efficiency due to insufficient suction; (3) Pressure requirements: The smaller outlet pipe diameter is because the liquid is pressurized in the pump, and the flow rate increases. The smaller pipe diameter helps to maintain the required outlet pressure, ensuring that the liquid can be effectively delivered to the target location; (4) Prevention of cavitation: The larger inlet pipe diameter can reduce the liquid flow rate, reduce the risk of cavitation, and protect the internal structure of the pump; (5) System design: This design conforms to the principles of fluid mechanics, ensuring that the liquid flows smoothly in the pump, reducing energy loss, and improving overall efficiency. It can optimize the pump's performance and ensure its efficient and stable operation.

[0032] The oil inlet pipe includes a pump-end oil inlet pipe connected to the motor pump. The pump-end oil inlet pipe is connected to a first ball valve and an inlet ball valve respectively through a first tee. The first ball valve is connected to the oil tank through a tank-end oil inlet pipe. The inlet ball valve is connected to the oil tank through an exhaust pipe.

[0033] Specifically, in this embodiment, the first tee is a reducing tee, and the size range of the inlet ball valve is 0.5 inches to 2 inches. The first, second, and third ports of the first tee are connected to the pump-end oil inlet pipe, the first ball valve, and the vent ball valve, respectively. The pump-end oil inlet pipe, the first ball valve, and the first and second ports of the first tee have the same pipe diameter (i.e., the diameter range of the oil inlet pipe is 3 inches to 4 inches). The diameter range of the third port of the first tee is the same as that of the inlet ball valve. The first ball valve and the tank-end oil inlet pipe form the oil delivery path for the test liquid, and the vent ball valve and the vent pipe form the return path for the residual oil-gas mixture. The first tee connects the two paths in parallel.

[0034] After testing the refueling equipment, the testing device closes the first ball valve and opens the inlet ball valve. At this time, the motor pump continues to run (and the refueling nozzle is open). A large amount of air is drawn in by the motor-driven self-priming pump. The drawn-in air reaches the outlet pipe as the pump operates, discharging the oil remaining in the outlet pipe and the refueling equipment. This quickly empties the test liquid from the refueling equipment, reducing losses from residual test liquid carried away by the equipment and avoiding the risk of leakage during transportation. The other end of the inlet ball valve is connected to the oil tank. This is because, at the moment the inlet ball valve is opened and after the test liquid has been drained, when the motor pump is turned off, a small amount of residual oil-air mixture can enter the oil tank through the exhaust pipe, thus reducing air pollution.

[0035] The oil inlet system also includes a bellows, which is connected in series between the pump-end oil inlet pipe and the first ball valve. The size range of the bellows is consistent with that of the oil inlet pipe.

[0036] Specifically, in this embodiment, the bellows is made of stainless steel. This invention, by installing a bellows between the pump inlet pipe and the first ball valve, effectively buffers the pressure impact of the oil on the refueling equipment. It also facilitates the overall assembly of the testing device, solving the problem in existing technologies where most test inlet pipes are connected by steel pipes, neglecting to consider the impact and hazards of oil pressure on the refueling equipment and pipelines.

[0037] The oil inlet system also includes a filter with a one-way valve, which is installed at the input end of the oil inlet pipe at the pump end, and the size range of the filter with the one-way valve is consistent with that of the oil inlet pipe.

[0038] Specifically, this invention uses a filter with a one-way valve (or a filter screen with a one-way valve) to clean the test fluid entering the refueling equipment from the source (oil tank). By purifying the test oil, the risk of damage to the downstream test device pipelines and refueling equipment can be reduced. Moreover, after the test is completed, it ensures that the test fluid in the oil inlet system does not flow back into the oil tank, which facilitates rapid refueling of the refueling equipment when the motor pump is started next time, without having to wait too long for the pump oil-gas separation, thus improving the testing efficiency.

[0039] The oil outlet pipe includes a pump outlet pipe connected to the motor pump. The pump outlet pipe is connected to two second ball valves via a second tee. Each second ball valve is connected to a corresponding hose. The hose is connected to the refueling equipment via a flange joint.

[0040] Specifically, in this embodiment, the present invention divides the oil outlet path into two branches through a second three-way valve. The first, second, and third ports of the second three-way valve are respectively connected to the pump outlet pipe and two second ball valves. Each branch includes one second ball valve and a hose. This design allows for the fulfillment of testing requirements at two different workstations without the need to move the bulky hose, making operation easier for testing personnel and increasing convenience and practicality.

[0041] The working principle of this utility model's ultra-high flow refueling equipment testing device is as follows:

[0042] During testing: Turn on the motor pump. The test liquid is filtered through the one-way valve filter screen at the bottom of the oil tank and then enters the oil inlet pipe at the end of the tank. It then flows through the bellows, which can reduce the impact and vibration of the test liquid to a certain extent. It then enters the motor pump and passes through the oil outlet pipe (which includes the pump outlet pipe, the second ball valve, the second tee, and the rubber hose in sequence) to reach the refueling equipment.

[0043] After completing the test: First close the first ball valve, then open the inlet ball valve, keep the motor pump running, and drain the test fluid from the motor pump and the oil outlet pipe at the rear end of the inlet ball valve. When you can no longer see oil coming out of the refueling equipment, the test fluid is drained, and the motor pump is turned off.

[0044] The above-described specific embodiments are preferred embodiments of this utility model and are not intended to limit this utility model. Any other changes or equivalent substitutions made without departing from the technical solution of this utility model are included within the protection scope of this utility model.

Claims

1. A testing device for ultra-high flow refueling equipment, characterized in that, This includes an electric pump and an oil inlet system and an oil outlet system respectively installed at the input and output ends of the electric pump. The electric pump includes a self-priming pump and a motor. The performance of the self-priming pump includes a speed of 400RPM to 640RPM and a maximum flow rate of 500L / min to 1000L / min. The power range of the motor is 4kW to 7.5kW. The oil inlet system includes an oil inlet pipe, with an oil tank and a motor pump connected to its two ends respectively. The diameter of the oil inlet pipe is 3 to 4 inches and its length is less than or equal to 10 meters. The oil outlet system includes an oil outlet pipe, with a motor pump and a refueling device connected to its two ends respectively. The diameter of the oil outlet pipe is 2 to 3 inches and its length is less than or equal to 50 meters. The diameter of the oil inlet pipe is larger than the diameter of the oil outlet pipe.

2. The testing device for ultra-high flow refueling equipment according to claim 1, characterized in that, The oil inlet pipe includes a pump-end oil inlet pipe connected to the motor pump. The pump-end oil inlet pipe is connected to a first ball valve and an inlet ball valve respectively through a first tee. The first ball valve is connected to the oil tank through a tank-end oil inlet pipe. The inlet ball valve is connected to the oil tank through an exhaust pipe.

3. The testing device for ultra-high flow refueling equipment according to claim 1, characterized in that, The oil inlet system also includes a bellows, which is connected in series between the pump-end oil inlet pipe and the first ball valve. The size range of the bellows is consistent with that of the oil inlet pipe.

4. The testing device for ultra-high flow refueling equipment according to claim 1, characterized in that, The oil inlet system also includes a filter with a one-way valve, which is installed at the input end of the oil inlet pipe at the pump end, and the size range of the filter with the one-way valve is consistent with that of the oil inlet pipe.

5. The testing device for ultra-high flow refueling equipment according to claim 1, characterized in that, The oil outlet pipe includes a pump outlet pipe connected to the motor pump. The pump outlet pipe is connected to two second ball valves via a second tee. Each second ball valve is connected to a corresponding hose. The hose is connected to the refueling equipment via a flange joint.

6. The testing device for ultra-high flow refueling equipment according to claim 2, characterized in that, The first tee is a reducing tee.

7. The testing device for ultra-high flow refueling equipment according to claim 6, characterized in that, The size range of the balloon inlet valve is 0.5 inches to 2 inches.

8. The testing device for ultra-high flow refueling equipment according to claim 3, characterized in that, The corrugated pipe is made of stainless steel.

9. The testing device for ultra-high flow refueling equipment according to claim 2, characterized in that, The length of the oil inlet pipe at the tank end ranges from 500mm to 800mm.

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