3.94 kPa fuel pressure sealing test device

Abstract

The utility model relates to the field of low-pressure fuel oil sealing test, in particular to a 3.94 kPa fuel oil pressure sealing test device which comprises a support, an oil storage tank arranged at the top of the support, an observation window arranged on the side face of the oil storage tank, organic glass arranged in the observation window, and scale marks arranged on the side face of the observation window. The bottom of the oil storage tank is provided with a pipeline connected with a tested product, the pipeline is provided with a ball valve, the support is further provided with a supporting block used for placing the tested product, fuel oil is arranged in the oil storage tank, and the height difference between the liquid level of the fuel oil and the tested product is 515 mm. The fuel pressure value is controlled and guaranteed to be 3.94 kPa through the height difference 515 mm between the liquid level and the tested product, and the sealing performance test operation detection requirement of the product under the fuel pressure of 3.94 kPa is met.

Description

Technical Field

[0001] This utility model patent relates to the field of low-pressure fuel sealing test, specifically to a 3.94kPa fuel pressure sealing test device, which is designed for low product pressure value, long pressure holding time and visual inspection requirements of sealing. Background Art

[0002] Currently, in actual operation, the test bench's minimum pressure sensor has a range of 0-0.1MPa and an accuracy of 0.25. The 3.94kPa test product's sealing test cannot be performed on the test bench. Therefore, the operator needs to make a homemade test fixture and use wire to lift the test fixture so that the fuel level inside the test fixture is approximately 515mm above the product height (the height of the oil column is converted to a pressure value of 3.94kPa by controlling the oil column height). This operation method is prone to large test errors. The liquid level inside the test fixture cannot be accurately observed. After the test, the oil splashes and cannot be properly collected and reused. The test process does not comply with the on-site 6S management. Secondly, the operator needs to climb up to suspend the test fixture, which carries the risk of high-altitude operation. Utility Model Content

[0003] The technical problem solved by the utility model is that in order to solve the current 3.94kPa fuel pressure product sealing test problem, a 3.94kPa fuel pressure sealing test device is provided.

[0004] The technical solution of the utility model

[0005] A 3.94 kPa fuel pressure leak test device comprises a bracket, a fuel storage tank disposed on the top of the bracket, an observation window disposed on the side of the fuel storage tank, organic glass disposed in the observation window, scale lines disposed on the side of the observation window, a pipeline connected to a test product disposed at the bottom of the fuel tank, a ball valve disposed on the pipeline, a support block for placing the test product on the bracket, fuel disposed in the fuel storage tank, and a height difference between the fuel liquid level and the test product of 515 mm.

[0006] Furthermore, an oil tank is provided on the bracket, and the oil tank is located below the support block.

[0007] Furthermore, an oil drain pipe is provided at the bottom of the oil tank, and a small ball valve is provided on the oil drain pipe.

[0008] Furthermore, a swivel locking caster is provided at the bottom of the bracket.

[0009] Furthermore, the fuel tank includes a metal cover and a handle provided on the metal cover.

[0010] Furthermore, the observation window is fixed to the side of the fuel tank by screws and nuts.

[0011] Furthermore, sealing rings are provided on both sides of the organic glass.

[0012] Beneficial effects

[0013] The utility model proposes a 3.94kPa fuel pressure sealing test device, which integrates a fuel storage tank, a visible liquid level, an oil collection device, and a controllable pressure. That is, the fuel pressure value of 3.94kPa is controlled and guaranteed by a height difference of 515mm between the liquid surface and the tested product, thereby achieving the sealing test operation and inspection requirements of the product under a fuel pressure of 3.94kPa (515mm oil column height). At the same time, the test device is simple to operate, occupies a small space, and is flexible in mobility, thereby meeting the requirements of reusing the test medium after the test. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is the main view of the utility model;

[0015] Figure 2 This is a top view of the utility model;

[0016] Among them, 1. bracket, 2. storage oil tank, 3. observation window, 4. scale line, 5. ball valve, 6. screw sleeve, 7. support block, 8. oil tank, 9. small ball valve, 10. oil drain pipe, 11. swivel locking caster, 12. metal cover. DETAILED DESCRIPTION

[0017] The features and illustrative embodiments of various aspects of the present invention will be described in detail below. In the detailed description below, many specific details are proposed in order to provide a comprehensive understanding of the present invention. However, it will be apparent to those skilled in the art that the present invention can be implemented without the need for some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of the present invention by illustrating examples of the present invention. The present invention is in no way limited to any specific arrangement and method proposed below, but rather encompasses any improvements, replacements, and modifications to structures, methods, and devices without departing from the spirit of the present invention. In the accompanying drawings and the following description, well-known structures and techniques are not shown to avoid unnecessary ambiguity in the present invention.

[0018] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other, and the embodiments can refer to and quote each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0019] like Figure 1A 3.94 kPa fuel pressure leak test device is shown. It includes a bracket 1, a fuel storage tank 2 mounted on top of the bracket 1, an observation window 3 positioned on the side of the fuel storage tank 2, a plexiglass window 3 with scale lines 4 on the side of the window 3, a pipeline connected to the test product at the bottom of the fuel storage tank 2, and a ball valve 5 installed on the pipeline. The bracket 1 also includes a support block 7 for placing the test product. A threaded sleeve is installed at the end of the pipeline connected to the test product, connecting the test product through the sleeve to the test product for filling the test product. Fuel is placed in the fuel storage tank 2, and the height difference between the fuel level and the test product is 515 mm. The bracket 1 also includes an oil tank 8 located below the support block 7. An oil drain pipe 10 is installed at the bottom of the oil tank 8, and a small ball valve 9 is installed on the drain pipe 10. A swivel-locking caster 11 is installed at the bottom of the bracket 1. The fuel storage tank 2 includes a metal cover 12 and a handle mounted on the cover 12. The observation window 3 is fixed to the side of the storage oil tank 2 by screws and nuts, and sealing rings are provided on both sides of the organic glass.

[0020] The sealing test device proposed by the utility model has a total height of 1550 mm, a length of 560 mm, and a width of 600 mm, and is made of aluminum alloy profile NEFS6-3030.

[0021] in:

[0022] Fuel tank cover: includes a handle and a metal cover 12. The metal cover 23 is connected to the handle by screw threads. The operator can manually lift or lower it to form a shield with the storage tank 2 to prevent dust and excess objects from contaminating the test medium;

[0023] Storage tank 2: The storage tank 2 is an open tank with an observation window 3 on the side. A scale line 4 (liquid level line) is printed on the observation window 3. The observation window 3, the sealing gasket, the organic glass plate and the storage tank 2 are sealed by tightening the screws and nuts to prevent leakage of the test medium and distortion of the product sealing test data.

[0024] Bracket 1: Made of aluminum alloy, it reduces weight. It is also combined with swivel lock casters 11 to make it easy to use and manage.

[0025] Ball valve 5 and small ball valve 9: By opening and closing the ball valve, the test medium can be controlled to enter the tested product, which facilitates the disassembly and assembly of the product and prevents the test medium in the storage tank 2 from splashing during the test. The opening and closing of the small ball valve 9 facilitates the collection of the oil after the test.

[0026] Support block 7: The installation of support block 7 facilitates the integrated use with the drainage pipe during on-site operation, transforming the test from one set of products to multiple sets of products, thereby improving the test efficiency.

[0027] The main function of this device is to achieve the 3.94kPa (515mm oil column height) fuel pressure product sealing test requirements. The principle of use of the fuel pressure sealing test device is: when the ball valve 5 is closed, the test medium fuel is injected into the storage tank 2 to prevent the entry of excess materials. The storage tank 2 is equipped with a tank cap. When the test product is connected to the M12×1-6H threaded sleeve and placed on the support block 7, the liquid level of the fuel test medium in the storage tank 2 is controlled by opening and closing the ball valve 5. When the liquid level reaches Figure 1 When the distance shown is 515mm, the equivalent pressure level is 3.94kPa, and the sealing test operation of the product is started. The pressure is maintained for 30 minutes, and it is observed that there should be no oil leakage at the sealing part of the test product. After the sealing test is completed, the oil in the test product flows into the oil tank 8, and then the oil is centrally recovered and processed through the small ball valve 9.

[0028] The utility model 3.94kPa fuel pressure product sealing test device has been put into production and used, effectively solving the problems of large test errors and experimental operations not meeting 6S management requirements, meeting on-site production needs and ensuring product quality.

[0029] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the field can easily think of various equivalent modifications or replacements within the technical scope disclosed by the present invention, and these modifications or replacements should all be covered by the scope of protection of the present invention.

Claims

1. A 3.94kPa fuel pressure leak test device, characterized in that: It includes a bracket, a storage tank is set on the top of the bracket, an observation window is set on the side of the storage tank, organic glass is set in the observation window, scale lines are set on the side of the observation window, a pipeline connected to the test product is set at the bottom of the storage tank, a ball valve is set on the pipeline, and a support block for placing the test product is also set on the bracket. Fuel is set in the storage tank, and the height difference between the fuel liquid level and the test product is 515mm.

2. A 3.94 kPa fuel pressure leak test device according to claim 1, characterized in that: An oil tank is also provided on the bracket, and the oil tank is located below the supporting block.

3. The 3.94 kPa fuel pressure leak test device according to claim 2, characterized in that: An oil drain pipe is provided at the bottom of the oil tank, and a small ball valve is provided on the oil drain pipe.

4. The 3.94 kPa fuel pressure leak test device according to claim 2, characterized in that: A swivel locking caster is provided at the bottom of the bracket.

5. The 3.94 kPa fuel pressure leak test device according to claim 1, characterized in that: The oil storage tank further comprises a metal cover and a handle arranged on the metal cover.

6. The 3.94 kPa fuel pressure leak test device according to claim 1, characterized in that: The observation window is fixed to the side of the storage oil tank by screws and nuts.

7. The 3.94 kPa fuel pressure leak test device according to claim 1, characterized in that: Sealing rings are arranged on both sides of the organic glass.

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