Flow testing device for intensified air entrainment type nozzle of diesel engine

Abstract

The utility model belongs to the technical field of diesel engine nozzles, and particularly relates to an intensified diesel engine strong air entrainment type nozzle flow testing device which comprises a workbench, a fixing plate is fixedly installed on the top of the workbench, supporting plates are fixedly installed on the two sides of the top of the fixing plate, and placing plates are installed in the supporting plates. A clamping opening is formed in the top of the containing plate, an oil nozzle body is clamped in the clamping opening, a measuring cup is installed at the bottom of the clamping opening, and a butt joint assembly is arranged at the bottom of the containing plate. According to the embodiment, a plurality of oil nozzle bodies are installed in a plurality of bayonets respectively, the closing cover abuts against the top of the measuring cup, the spring is extruded to apply downward force to the closing cover, the closing cover can tightly close the measuring cup, and the oil nozzle bodies are inserted into the measuring cup through the butt joint openings. The problem that diesel oil splashes when the oil nozzle body sprays the diesel oil is solved, and the diesel oil sprayed by the oil nozzle is completely received.

Description

Technical Field

[0001] This utility model belongs to the field of diesel engine nozzle technology, specifically a device for testing the flow rate of a diesel engine strong air entrainment type nozzle. Background Technology

[0002] The diesel engine nozzle, also known as the diesel engine fuel injector, is a key component of a diesel engine. Its main function is to inject diesel fuel into the cylinder at high pressure, where it mixes thoroughly with air and burns to generate energy.

[0003] When the fuel injector is working, high-pressure diesel fuel enters the injector through the fuel line, reaches the annular oil chamber of the needle valve body through the fuel inlet, and acts on the pressure-bearing cone surface of the needle valve to generate an upward thrust. When the thrust exceeds the preload of the pressure regulating spring, the needle valve moves upward to open the injection hole, and the diesel fuel is injected into the combustion chamber. Therefore, the amount of diesel fuel injected needs to be tested during the production or use of the fuel injector.

[0004] When testing fuel injectors, they are typically connected to a high-pressure fuel pump to deliver high-pressure diesel fuel. To determine the diesel fuel flow rate, the injector needs to be securely installed and a receiving device is used to collect the injected diesel fuel. Therefore, flow rate testing requires quick and precise connection between the injector and the receiving device to facilitate rapid and accurate flow rate measurement. To address this issue, a enhanced diesel engine forced air entrainment type nozzle flow rate testing device is proposed. Utility Model Content

[0005] To overcome the shortcomings of existing technologies and address the problems of existing equipment, this utility model proposes an enhanced diesel engine strong air entrainment type nozzle flow testing device.

[0006] The technical solution adopted by this utility model to solve its technical problem is a strong air entrainment type nozzle flow test device for diesel engines, including a workbench, a fixed plate fixedly installed on the top of the workbench, support plates fixedly installed on both sides of the top of the fixed plate, a placement plate installed inside the support plate, an adjustment component installed inside the placement plate, a slot opened on the top of the placement plate, a fuel injector body engaged inside the slot, a measuring cup installed at the bottom of the slot, and a docking component installed at the bottom of the placement plate.

[0007] The docking assembly includes a through hole in the top of the placement plate, a sliding post is slidably installed inside the through hole, a closing cover is fixedly installed on the bottom part of the sliding post that extends to the bottom of the placement plate, a compression spring is provided on the outer surface of the sliding post, the top end of the compression spring is installed on the bottom of the placement plate, the bottom end of the compression spring is installed on the top of the closing cover, and a fixing sleeve is threadedly connected to the top part of the sliding post that extends to the top of the placement plate.

[0008] Preferably, the top of the closed cap has a connection interface, the fuel injector body is installed inside the connection interface, and the closed cap is installed on the top of the measuring cup.

[0009] Preferably, multiple bayonets and docking components are provided, and the multiple bayonets and docking components are arranged in a linear array on the top of the placement plate.

[0010] Furthermore, the multiple bayonets and docking components on the top of the placement plate can be used to dock and install multiple fuel injector bodies into the interior of the placement plate, so that the fuel injector bodies are connected to the interior of the measuring cup.

[0011] Preferably, the adjustment assembly includes a threaded hole on the top of the placement plate, a lead screw is threaded into the inside of the threaded hole, the bottom of the lead screw is rotatably mounted on the top of the fixed plate, and a rotating cap is fixedly mounted on the top of the lead screw.

[0012] Preferably, the support plate has a groove on the side near the placement plate, and a slider is slidably installed inside the groove. The slider is fixedly installed on the outside of the placement plate.

[0013] Preferably, a weighing sensor is installed on the top of the fixing plate, the weighing sensor is located at the bottom of the measuring cup, and a display screen is installed on the top of the workbench.

[0014] Furthermore, the display screen is connected to the load cell via a wire, allowing the display screen to receive and display the values ​​measured by the load cell.

[0015] The beneficial effects of this utility model are:

[0016] 1. In this utility model, when testing the injection flow rate of the fuel injector body, multiple fuel injector bodies are installed into the interior of multiple bayonets. Rotating the rotating cap drives the lead screw to rotate, allowing the placement plate to move downwards. The closing cover is placed against the top of the measuring cup, and the compression spring applies a downward force to the closing cover, which can make the closing cover tightly close the measuring cup. At this time, the fuel injector body is inserted into the interior of the measuring cup through the interface through the closing cover, avoiding the problem of diesel splashing when the fuel injector body injects diesel. The diesel injected by the fuel injector is completely collected, and the flow rate of multiple fuel injector bodies can be tested at one time.

[0017] 2. In this utility model, when testing the flow rate of the fuel injector body, the fuel injector body will generally spray diesel fuel multiple times. The diesel fuel sprayed multiple times will be collected in the measuring cup. The weighing sensor at the bottom of the measuring cup can weigh the measuring cup and transmit the weighing value to the display screen, so that the personnel can observe the flow rate of diesel fuel sprayed by the fuel injector body. Attached Figure Description

[0018] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this application, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:

[0019] Figure 1 This is a schematic diagram of the overall three-dimensional structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the support plate structure of this utility model;

[0021] Figure 3 This is a schematic diagram of the docking component structure of this utility model;

[0022] Figure 4 This is a schematic diagram of the sliding column structure of this utility model;

[0023] Figure 5 This is a schematic diagram of the adjustment component structure of this utility model.

[0024] Legend:

[0025] In the diagram: 1. Workbench; 11. Fixing plate; 12. Support plate; 2. Placement plate; 21. Adjustment assembly; 201. Threaded hole; 202. Lead screw; 203. Rotating cap; 22. Bayonet; 23. Injector body; 3. Measuring cup; 4. Connecting assembly; 401. Sliding column; 402. Closing cap; 403. Compression spring; 404. Fixing sleeve; 5. Connecting interface; 6. Slide groove; 61. Slider; 7. Weighing sensor; 71. Display screen. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0027] Please see Figures 1-5 As shown, a device for testing the flow rate of a diesel engine forced air entrainment nozzle includes a workbench 1, a fixed plate 11 fixedly installed on the top of the workbench 1, support plates 12 fixedly installed on both sides of the top of the fixed plate 11, a placement plate 2 installed inside the support plate 12, an adjustment component 21 installed inside the placement plate 2, a slot 22 opened on the top of the placement plate 2, a fuel injector body 23 snapped into the slot 22, a measuring cup 3 installed at the bottom of the slot 22, and a docking component 4 installed at the bottom of the placement plate 2.

[0028] The docking assembly 4 includes a through hole in the top of the placement plate 2. A sliding post 401 is slidably installed inside the through hole. A closing cover 402 is fixedly installed on the part of the bottom of the sliding post 401 that extends to the bottom of the placement plate 2. A compression spring 403 is provided on the outer surface of the sliding post 401. The top of the compression spring 403 is installed on the bottom of the placement plate 2, and the bottom of the compression spring 403 is installed on the top of the closing cover 402. A fixing sleeve 404 is threadedly connected to the part of the top of the sliding post 401 that extends to the top of the placement plate 2.

[0029] The top of the closing cover 402 has an interface 5, the fuel injector body 23 is installed inside the interface 5, and the closing cover 402 is installed on the top of the measuring cup 3. Multiple bayonets 22 and docking components 4 are provided, and the multiple bayonets 22 and docking components 4 are arranged in a linear array on the top of the placement plate 2.

[0030] Through the above technical solution, two support plates 12 are fixedly installed on both sides of the top of the fixed plate 11 on the workbench 1, so that the support plates 12 can support and fix the top placement plate 2. A bayonet 22 is opened on the top of the placement plate 2. The diameter of the bayonet 22 is adapted to the diameter of the fuel injector body 23. The fuel injector body 23 can be locked inside the bayonet 22 for limiting. Three through holes are opened on the top of the placement plate 2. The three through holes are located outside the bayonet 22 and are distributed in a circumferential array. The sliding post 401 is inserted into the through holes. The bottom of the sliding post 401 is fixedly installed on the top of the closing cover 402 at the bottom of the placement plate 2. The compression spring 403 is sleeved on the outer surface of the sliding post 401. The closing cover 402 is located on the top of the measuring cup 3. When the injection flow rate of the fuel injector body 23 is tested, a high-pressure fuel pump is connected through a pipeline. The height of the mounting plate 2 can be adjusted by adjusting the component 21 through the interface on the outer surface of the injector body 23. The closing cover 402 is placed against the top of the measuring cup 3, so that the closing cover 402 closes the measuring cup 3. At this time, the injector body 23 is inserted into the measuring cup 3 through the interface 5 through the closing cover 402, which avoids the problem of diesel splashing when the injector body 23 injects diesel. The high-pressure fuel pump delivers high-pressure diesel to the inside of the injector body 23. The high-pressure diesel is sprayed into the measuring cup 3 in a mist form through the injection hole at the bottom of the injector. The sprayed diesel is collected by the measuring cup 3. The closing cover 402 can prevent the mist diesel from escaping out of the measuring cup 3, so that all the sprayed diesel is collected by the measuring cup 3. Personnel can observe the flow rate of diesel sprayed in the measuring cup 3, which achieves the effect of testing the flow rate of diesel sprayed by the injector.

[0031] It should be noted that when the injector body 23 is inserted into the measuring cup 3, it is inconvenient for personnel to observe the state of diesel fuel injection from the injector body 23 when detecting the state of diesel fuel injection from the injector body 23. Pulling the sliding column 401 pulls the closing cover 402 upward, no longer closing the measuring cup 3. Tightening the fixing sleeve 404 fixes the sliding column 401 in position, preventing the sliding column 401 from being squeezed by the compression spring 403 and covering the top of the measuring cup 3 again. This makes it easier for personnel to observe the state of diesel fuel injection from the injector body 23 inside the measuring cup 3. The measuring cup 3 is a graduated cup, which makes it easy for personnel to observe the amount of diesel fuel inside the measuring cup 3. The high-pressure fuel pump pressurizes the diesel fuel to tens to hundreds of times atmospheric pressure through mechanical means to meet the requirements of precise injection and atomization of the injector body 23. The internal wiring connection of the high-pressure fuel pump is existing technology, and its working principle is common knowledge to those skilled in the art, and will not be described in detail here.

[0032] Considering the issue of how to adjust the position of the placement plate 2 vertically within the support plate 12, please provide the following information. Figure 2 and Figure 5 The specific structure of the adjustment component 21 is disclosed. The adjustment component 21 includes a threaded hole 201 opened on the top of the placement plate 2. A lead screw 202 is threadedly connected inside the threaded hole 201. The bottom of the lead screw 202 is rotatably mounted on the top of the fixed plate 11. A rotating cap 203 is fixedly mounted on the top of the lead screw 202.

[0033] A groove 6 is provided on the side of the support plate 12 near the placement plate 2. A slider 61 is slidably installed inside the groove 6 and the slider 61 is fixedly installed on the outside of the placement plate 2.

[0034] Through the above technical solution, a groove 6 is opened on one side of the two support plates 12 near the placement plate 2, so that the placement plate 2 can be slidably installed inside the groove 6 by means of the sliders 61 installed on both sides. The lead screw 202 passes through the threaded hole 201 at the top of the placement plate 2, and the bottom of the lead screw 202 is rotatably connected to the top of the fixing plate 11. Then, the operator can rotate the rotating cap 203 to rotate the lead screw 202, so that the placement plate 2 moves up and down along the outer surface of the lead screw 202, aligning the nozzle body 23 with the inside of the measuring cup 3, and closing the closing cap 402 on the top of the measuring cup 3.

[0035] Furthermore, considering the question of how to specifically measure the diesel fuel injected into measuring cup 3, the following is presented: Figure 1 and Figure 5 A weighing sensor 7 is installed on the top of the fixed plate 11. The weighing sensor 7 is located at the bottom of the measuring cup 3. A display screen 71 is installed on the top of the workbench 1.

[0036] Through the above technical solution, multiple weighing sensors 7 are installed on the top of the fixed block. The positions of the multiple weighing sensors 7 correspond one-to-one with the positions where the measuring cup 3 is placed. The weight of the diesel fuel in the measuring cup 3 can be measured and the data is transmitted to the display screen 71 for display.

[0037] It should be noted that the weighing sensor 7 is a device that converts the weight of an object into a measurable electrical signal. The internal circuit connection of the weighing sensor 7 is existing technology, and its working principle is common knowledge to those skilled in the art, so it will not be described in detail here.

[0038] In summary, the working principle of this utility model is as follows:

[0039] When testing the injection flow rate of the fuel injector body 23, multiple fuel injector bodies 23 are installed into multiple bayonet 22s. A high-pressure fuel pump is connected to the interface on the outer surface of the fuel injector body 23 through a pipe. Rotating the rotating cap 203 drives the lead screw 202 to rotate, allowing the placement plate 2 to move downwards, pressing the closing cover 402 against the top of the measuring cup 3. The compression spring 403 applies a downward force to the closing cover 402, causing the closing cover 402 to tightly close the measuring cup 3. At this time, the fuel injector body 23 passes through the closing cover 402 through the interface 5. Inserted into the measuring cup 3, it avoids diesel splashing when the injector body 23 injects diesel. The high-pressure fuel pump delivers high-pressure diesel to the injector body 23. The high-pressure diesel is sprayed out in a mist through the injection hole at the bottom of the injector and enters the measuring cup 3. The sprayed diesel is collected by the measuring cup 3. Closing the cover 402 can prevent the mist diesel from escaping out of the measuring cup 3, so that all the sprayed diesel is collected by the measuring cup 3. This allows personnel to observe the flow rate of diesel sprayed in the measuring cup 3, achieving the effect of testing the diesel flow rate of multiple injector bodies 23 at one time.

[0040] When conducting flow rate tests on the injector body 23, diesel fuel is typically injected multiple times and collected in the measuring cup 3. The weighing sensor 7 at the bottom of the measuring cup 3 can weigh the measuring cup 3 and transmit the weighing value to the display screen 71, allowing personnel to observe the flow rate of diesel fuel injected by the injector body 23.

[0041] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0042] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A device for testing the flow rate of a diesel engine forced air entrainment nozzle, comprising a workbench (1), wherein a fixing plate (11) is fixedly installed on the top of the workbench (1), and support plates (12) are fixedly installed on both sides of the top of the fixing plate (11), characterized in that: The support plate (12) is equipped with a placement plate (2), the placement plate (2) is equipped with an adjustment component (21), the top of the placement plate (2) is provided with a slot (22), the inside of the slot (22) is fitted with an oil injector body (23), the bottom of the slot (22) is equipped with a measuring cup (3), and the bottom of the placement plate (2) is provided with a docking component (4). The docking assembly (4) includes a through hole opened on the top of the placement plate (2), a sliding post (401) is slidably installed inside the through hole, a closing cover (402) is fixedly installed on the part of the bottom of the sliding post (401) that extends to the bottom of the placement plate (2), a compression spring (403) is provided on the outer surface of the sliding post (401), the top end of the compression spring (403) is installed on the bottom of the placement plate (2), the bottom end of the compression spring (403) is installed on the top of the closing cover (402), and a fixing sleeve (404) is threadedly connected to the part of the top of the sliding post (401) that extends to the top of the placement plate (2).

2. The enhanced diesel engine forced air entrainment type nozzle flow testing device according to claim 1, characterized in that: The top of the closing cap (402) is provided with a connection interface (5), the fuel injector body (23) is installed inside the connection interface (5), and the closing cap (402) is installed on the top of the measuring cup (3).

3. The enhanced diesel engine forced air entrainment type nozzle flow testing device according to claim 1, characterized in that: Multiple bayonets (22) and docking components (4) are provided, and multiple bayonets (22) and docking components (4) are arranged in a linear array on the top of the placement plate (2).

4. The enhanced diesel engine forced air entrainment type nozzle flow testing device according to claim 3, characterized in that: The adjustment assembly (21) includes a threaded hole (201) on the top of the placement plate (2), and a lead screw (202) is threaded inside the threaded hole (201). The bottom of the lead screw (202) is rotatably mounted on the top of the fixed plate (11), and a rotating cap (203) is fixedly mounted on the top of the lead screw (202).

5. The enhanced diesel engine forced air entrainment type nozzle flow testing device according to claim 4, characterized in that: The support plate (12) has a groove (6) on the side near the placement plate (2), and a slider (61) is slidably installed inside the groove (6). The slider (61) is fixedly installed on the outside of the placement plate (2).

6. The enhanced diesel engine forced air entrainment type nozzle flow testing device according to claim 1, characterized in that: A weighing sensor (7) is installed on the top of the fixed plate (11), and the weighing sensor (7) is located at the bottom of the measuring cup (3). A display screen (71) is installed on the top of the workbench (1).

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