A device for testing oil and gas separation capacity

Abstract

The utility model discloses a kind of oil-gas separation capacity test device, including support assembly, the support assembly is equipped with fixed seat;Glass rotor flowmeter, is vertically installed on the support assembly by the fixed seat;First check valve, is connected in the first interface of the glass rotor flowmeter;Second check valve, is connected in the second interface of the glass rotor flowmeter;Connecting pipeline, for the oil inlet pipeline of the second check valve and to-be-measured equipment intercommunication.The utility model is simple structure, convenient operation, high detection precision and strong applicability, solve the problem of complex detection equipment, cumbersome operation, insufficient accuracy of test result in prior art.

Description

Technical Field

[0001] This utility model belongs to the field of testing technology for refueling equipment. Specifically, it relates to an oil-gas separation capacity testing device, which is particularly suitable for testing the oil-gas separation capacity of the self-priming pump of a fuel dispenser. Background Technology

[0002] In industrial applications such as fuel dispensers and fuel delivery systems, the oil-gas separation capability of self-priming pumps is a key performance indicator. Currently, common testing methods include dynamic cycle testing, static separation testing, and pressure difference testing, but all have certain limitations.

[0003] While dynamic cyclic testing can simulate actual working conditions, the testing equipment is complex and the operation is cumbersome. Using electronic components such as solenoid valves requires building a complex cyclic system, resulting in high equipment costs, difficult maintenance, and potential degradation of system stability over long periods of operation.

[0004] Static separation testing cannot realistically simulate the dynamic conditions (such as vibration and flow fluctuations) of a self-priming pump in actual operation. The test results deviate significantly from the actual operating conditions, and the separation time measurement relies on manual operation, which introduces subjective errors.

[0005] Pressure difference testing requires extremely high sensor accuracy; even minute errors can lead to distorted results.

[0006] Therefore, existing technologies suffer from problems such as complex testing equipment, cumbersome operation, insufficient accuracy of test results, and inability to realistically simulate dynamic working conditions. Utility Model Content

[0007] To address the shortcomings of existing technologies, this utility model provides an oil-gas separation capacity testing device. This testing device has a simple structure, is easy to operate, has high testing accuracy, and is highly applicable.

[0008] To achieve the above objectives, this utility model provides the following technical solution: an oil-gas separation capacity testing device, comprising:

[0009] The bracket assembly includes a mounting base;

[0010] The glass rotor flow meter is vertically mounted on the bracket assembly via the fixed base;

[0011] The first check valve is connected to the first interface of the glass rotor flowmeter;

[0012] The second check valve is connected to the second port of the glass rotor flowmeter;

[0013] A connecting pipeline is used to connect the second check valve to the oil inlet pipeline of the device under test.

[0014] Preferably, the glass rotor flowmeter is installed at a position higher than the device under test.

[0015] Preferably, the height of the support assembly is 1000mm to 1500mm.

[0016] Preferably, the height of the support assembly is adjustable, with an adjustable range of 300mm to 500mm.

[0017] Preferably, the connecting pipe is an oil-resistant rubber hose.

[0018] Preferably, the inner diameter of the oil-resistant rubber tube is 8 mm.

[0019] Preferably, the first check valve and the second check valve are connected to the glass rotor flowmeter via quick connectors.

[0020] Preferably, the bracket assembly is made of 304 stainless steel.

[0021] Compared with the prior art, the beneficial effects of this utility model include:

[0022] (1) This utility model adopts a modular design. The glass rotor flow meter is fixed by the bracket assembly, and the first one-way valve and the second one-way valve ensure unidirectional airflow and prevent backflow. The simple linear structure replaces the complex circulation system and high-cost sensor in the prior art, realizing the miniaturization, lightweight and low cost of the device. The device is easy to move and install quickly, easy to operate, and has high detection efficiency. It is suitable for fuel dispenser detection in different places.

[0023] (2) By using a glass rotor flowmeter as the core metering component, this utility model realizes the intuitive reading of the intake volume. The vertical installation ensures accurate measurement of the intake volume. Combined with the gradient test method, it can establish an accurate quantitative evaluation model of "intake volume-performance error" with high detection accuracy.

[0024] (3) By adopting a double one-way valve structure with a first one-way valve and a second one-way valve, this utility model ensures unidirectional airflow, effectively prevents oil backflow, and improves test safety. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the structure of an oil-gas separation capacity testing device according to the present invention.

[0026] Figure 2 This is a schematic diagram of an oil-gas separation capacity testing device according to the present invention.

[0027] Among them, 1 is the second check valve, 2 is the glass rotor flow meter, 3 is the first check valve, 4 is the bracket, 5 is the fixed base, 6 is the connecting pipeline, 7 is the oil inlet pipeline, 8 is the oil inlet pipeline check valve, 9 is the oil tank, 10 is the self-priming pump with oil-gas separator, and 11 is the fuel dispenser computer platform. Detailed Implementation

[0028] 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.

[0029] Example

[0030] like Figure 1 The diagram shows the overall structure of an oil-gas separation capacity testing device, including a support assembly comprising a support and a mounting base. Preferably, it is made of 304 stainless steel, which provides sufficient strength and corrosion resistance. The height of the support assembly is designed to be 1000mm–1500mm, and preferably adjustable by 300mm–500mm from this design height to adapt to different environments.

[0031] The glass rotor flow meter is vertically mounted on the bracket assembly via the mounting base; this vertical mounting is a necessary condition for the float inside the glass rotor flow meter to accurately measure the gas flow rate.

[0032] The first check valve is connected to the first interface of the glass rotor flowmeter;

[0033] The second check valve is connected to the second port of the glass rotor flowmeter;

[0034] A connecting pipeline is used to connect the second check valve to the oil inlet pipeline of the device under test;

[0035] Specifically, in a preferred embodiment of this invention, the device under test is a self-priming pump of a fuel dispenser, and both the first and second one-way valves are air one-way check valves. The lower end of the glass rotor flowmeter serves as the air inlet (i.e., the first interface), connected to the first one-way valve, and the upper end serves as the air outlet (i.e., the second interface), connected to the second one-way valve. This bottom-in, top-out flow direction design conforms to the natural upward trend of gas in a vertical pipe, contributing to stable airflow and accurate readings.

[0036] This invention adopts a modular design, using a unique combination of a glass rotor flowmeter, a first check valve, and a second check valve. This simple linear structure replaces the complex circulation system and high-cost sensors of existing technologies, achieving miniaturization, lightweight design, and low cost. The entire device is compact and lightweight, allowing for quick connection and disconnection with different models of fuel dispensers. It is ideal for mobile on-site testing and regular inspections in practical workplaces such as gas stations, making it highly versatile.

[0037] The glass rotor flowmeter is installed at a position higher than the device under test.

[0038] Specifically, the glass rotor flowmeter is installed higher than the device under test, such as a self-priming pump, utilizing gravity to assist airflow and improve detection accuracy. In a preferred embodiment of this invention, the glass rotor flowmeter is LZB-6WB(F), with a measurement range of 0.1–10 L / min and an accuracy class of not less than 2.5. This accuracy class is crucial for ensuring that the entire test setup can perform high-precision quantitative evaluation and establish an accurate "intake volume-performance error" curve model.

[0039] The connecting pipe is preferably an oil-resistant rubber tube with an inner diameter of 8mm. One end of the connecting pipe (i.e., the air pipe) is connected to the second one-way valve, and the other end is sealed to the oil inlet pipe of the self-priming pump to be tested in the fuel dispenser.

[0040] The first and second check valves are preferably connected to the glass rotor flowmeter via a quick-connect air pipe connector for easy disassembly and maintenance.

[0041] like Figure 2 The diagram shown is a schematic diagram of this utility model. From Figure 1 and Figure 2 It can be seen that the gas flow direction of this device is as follows: gas enters from the inlet, flows through the first one-way valve, passes through the glass rotor flowmeter, then flows out from the outlet, passes through the second one-way valve, and enters the connecting pipeline (gas pipe). The oil flow direction is as follows: oil enters from the oil tank through the one-way check valve of the oil inlet pipe and enters the oil inlet pipeline. The connecting pipeline is connected to the oil inlet pipeline to form an oil-gas mixture.

[0042] The working principle of this utility model's oil-gas separation capacity testing device is based on simulating the oil-gas mixing process under actual working conditions, and quantitatively evaluating the separation capacity of the self-priming pump through gradient testing. The specific working process is as follows:

[0043] 1. Device Connection: Connect the second interface (i.e., the air outlet) of the oil-gas separation capacity test device to the oil inlet of the self-priming pump to be tested on the fuel dispenser via a connecting pipe (such as an oil-resistant rubber hose). Adjust the knob of the glass rotor flow meter to make the initial air intake zero, ensuring that the device is in its initial state.

[0044] 2. Dynamic Testing: Start the fuel dispenser and run it at maximum flow for at least 1 minute to simulate high-load conditions. Then, at this maximum flow rate, gradually adjust the knob of the glass rotor flow meter to increase the air intake and introduce air to form an oil-gas mixture.

[0045] 3. Data Acquisition: After the oil-gas mixture is processed by the self-priming pump, the performance parameters of the fuel dispenser (such as flow range, maximum permissible error and repeatability) are collected in real time. These parameters reflect the oil-gas separation effect of the self-priming pump.

[0046] 4. Cyclic verification: Repeat steps 2 and 3 at least 5 times for gradient testing (i.e., testing under different intake volumes) to establish an "intake volume-performance error" curve model. This model can accurately quantify the separation performance of the self-priming pump.

[0047] 5. Pass / Fail Judgment: Compare the test data with the preset standard. If all test data meet the preset standard, the oil-gas separation capability of the self-priming pump is deemed to be qualified.

[0048] Specifically, by rotating the knob of the glass rotor flowmeter, the intake air volume into the system can be precisely and continuously controlled, gradually increasing from zero to simulate different oil-air mixture ratios. This forms the basis for constructing the "intake air volume - performance error" curve model. By gradually adjusting and introducing air under the maximum flow operating condition of the fuel dispenser, the self-priming pump processes the oil-air mixture in a realistic dynamic working environment. This effectively reflects the impact of actual factors such as vibration and flow fluctuations on separation performance, ensuring that the test results highly match actual operating conditions and greatly improving the accuracy and reliability of the evaluation. By connecting the testing device to the computer platform of a normally operating fuel dispenser, objective electrical parameters such as flow rate and error are directly read for judgment. The entire testing process requires no manual intervention to determine the separation state, has a high degree of automation, effectively eliminates errors introduced by human factors, and ensures the objectivity and consistency of the results. By establishing a curve model through multiple gradient tests, the random errors of a single test are avoided, improving the accuracy and reliability of the evaluation.

[0049] 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. An oil-gas separation capacity testing device, characterized in that, include: The bracket assembly includes a mounting base; The glass rotor flow meter is vertically mounted on the bracket assembly via the fixed base; The first check valve is connected to the first interface of the glass rotor flowmeter; The second check valve is connected to the second port of the glass rotor flowmeter; A connecting pipeline is used to connect the second check valve to the oil inlet pipeline of the device under test.

2. The oil-gas separation capacity testing device according to claim 1, characterized in that, The glass rotor flowmeter is installed at a position higher than the device under test.

3. The oil-gas separation capacity testing device according to claim 1, characterized in that, The height of the support assembly is 1000mm to 1500mm.

4. The oil-gas separation capacity testing device according to claim 3, characterized in that, The height of the bracket assembly is adjustable, with an adjustable range of 300mm to 500mm.

5. The oil-gas separation capacity testing device according to claim 1, characterized in that, The connecting pipe is an oil-resistant rubber hose.

6. The oil-gas separation capacity testing device according to claim 5, characterized in that, The inner diameter of the oil-resistant rubber tube is 8 mm.

7. The oil-gas separation capacity testing device according to claim 1, characterized in that, The first check valve and the second check valve are connected to the glass rotor flow meter via quick connectors.

8. The oil-gas separation capacity testing device according to claim 1, characterized in that, The bracket assembly is made of 304 stainless steel.

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