CN211927178U - Air-tightness test platform for gas-driven urea nozzles - Google Patents

Abstract

The utility model relates to the technical field of air-tightness test attachments, in particular to an air-tightness test platform for an air-driven urea nozzle, which can improve measurement accuracy, facilitate observation, and facilitate the adhesion of workpieces after the test is completed. Cleaning and drying treatment can realize automatic and quantitative leak detection; including workbench, electric controller, air-tight clamping device, standard sample, spray test control box, water tank and booster tank, the electric controller and standard sample They are installed on the back half area of the top of the workbench, the airtight clamping device is installed on the top of the workbench, and the spray test control box is installed on the sidewall of the workbench, mainly used to detect whether there is leakage in the urea nozzle.

Description

Air-tightness test platform for gas-driven urea nozzles

technical field

The utility model relates to the technical field of an airtightness test accessory device, in particular to an airtightness test platform of an air-driven urea nozzle.

Background technique

The air tightness test is carried out on the pressure volume and pipeline to prevent local defects in the product after production, such as "trachoma" and cracks. A gas seal experiment. For some pressure vessels and pipelines that store hazardous gases and other special gases or gases with high purity, air tightness tests must be carried out. This is an experimental method different from the air pressure test, which is necessary to protect personal safety.

When testing the air tightness of the pipeline, the testing method is generally based on the different pressure levels of the pressure container, shell, pipeline and valve, and different air tightness test pressures are selected for testing. The inspection methods are generally divided into: pressure drop method Inspection (observation of the pressure gauge), bubbling detection (the most intuitive), and digital pressure control, computer control type.

The common methods of air tightness detection include bubble method, smear method, chemical gas tracer leak detection method, pressure change method, flow method, ultrasonic method and so on. The traditional leak detection methods mostly use the bubble method and the smear method. The bubble method is to immerse the workpiece in water, fill it with compressed air, and then collect the bubbles leaking from it within a certain period of time to measure the leakage. The smearing method is to smear soapy water on the surface of the workpiece with a certain air pressure, which is easy to generate bubbles, and observe the bubbles to detect the size of the leakage.

The two methods, the bubble method and the smear method, are easy to operate, and can directly observe the leakage location and leakage situation. However, because the leakage location and several leaks of the workpiece are not known in advance, it is difficult to collect all bubbles, which affects the accuracy of the measurement; secondly, For parts with large volume, heavy weight and complex outer surface, the bubbles are attached to the bottom and folds of the parts and are not easy to observe; after the test, the workpiece needs to be cleaned and dried, and automatic and quantitative leak detection cannot be realized.

Utility model content

In order to solve the above-mentioned technical problems, the utility model provides an air-tight gas-driven urea nozzle that can improve the measurement accuracy, facilitate observation, and facilitate the viscous cleaning and drying of the workpiece after the test is completed, and can realize automatic and quantitative leak detection. Sex test platform.

The air-tightness test platform of the gas-driven urea nozzle of the utility model includes a workbench, an electric controller, an air-tight clamping device, a standard sample, a spray test control box, a water tank and a booster tank. The electric controller and the standard The samples are installed in the rear half area of the top of the workbench, the air-tight clamping device is installed on the top of the workbench, and the spray test control box is installed on the sidewall of the workbench.

In the air-tightness test platform of the air-driven urea nozzle of the utility model, the air-tight clamping device comprises a water tank and an observation window. The bottom is provided with a plurality of groups of supporting columns, an observation port is provided on the front side wall of the water tank, and the observation port is communicated with the water storage cavity. The upper half area of the water tank is provided with a support frame, the support frame is provided with a lifting mechanism, and the bottom end of the lifting mechanism is provided with a conical sealing mechanism, and the back half area of the support frame is provided with a detection mechanism, which is set at the front end of the support frame There is a support, a pneumatic assembly power supply plug-in mechanism is arranged on the support, and a water channel check valve and an air channel check valve are arranged on the detection mechanism.

Compared with the prior art, the beneficial effects of the present utility model are as follows: 1. The device of the present utility model can realize the collective detection of the air tightness of the part housing and the assembly; Collective detection of air tightness and circuit spraying; 3. The device of the utility model can easily adjust the fixed angle of the fixed point of the parts and carry out standardization; 4. Energy saving and environmental protection; 5. Lean production.

Description of drawings

Fig. 1 is the structural representation of the airtight clamping device of the present utility model;

Fig. 2 is the left side view of the structure of the airtight clamping device of the present invention;

301, water tank; 302, observation window; 303, water outlet; 304, bead; 305, support frame; 306, lift mechanism; 307, conical sealing mechanism; 308, detection mechanism; 309, support; 310. Pneumatic assembly power plug-in mechanism; 311. Water one-way valve; 312. Air one-way valve.

Detailed ways

The specific embodiments of the present utility model will be described in further detail below with reference to the accompanying drawings and embodiments. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

As shown in Figures 1 to 2, the air-tightness test platform of the gas-driven urea nozzle of the present invention includes a workbench, an electric controller, an air-tight clamping device, a standard sample, a spray test control box, a water tank 301, and an increaser The pressure tank, the electric controller and the standard sample are all installed in the rear half area of the top of the workbench, the airtight clamping device is installed on the top of the workbench, and the spray test control box is installed on the sidewall of the workbench.

In the air-tightness test platform of the air-driven urea nozzle of the present invention, the air-tight clamping device includes a water tank 301 and an observation window 302. The water tank 301 is provided with a water storage cavity, and the bottom of the water tank 301 is communicated with a drain port. 303, the bottom of the water tank 301 is provided with a plurality of groups of supporting columns, the front side wall of the water tank 301 is provided with an observation port, the observation port is communicated with the water storage cavity, the observation window 302 is installed at the observation port, and passes through a plurality of groups of pressure strips 304. To achieve sealing at the observation window 302, the upper half of the water tank 301 is provided with a support frame 305, the support frame 305 is provided with a lifting mechanism 306, and the bottom end of the lifting mechanism 306 is provided with a conical sealing mechanism 307. A detection mechanism 308 is provided in the rear half of the support frame 305, and a support 309 is provided at the front end of the support frame 305. The support 309 is provided with a pneumatic assembly power plug-in mechanism 310, and the detection mechanism 308 is provided with a waterway. Check valve 311 and air check valve 312.

When testing, 1. Put the tested housing on the test bench, press the testing housing button, and start testing the air tightness of the housing. At this time, it is controlled by the program to cut off the air path of the assembly, and observe the testing results during testing. Eligibility. If the test result is unqualified, press the stop button, the cylinder will return to the initial state, and then other workpieces can be replaced to continue the test. (The air pressure of the detection case connector 1161212-19W is 0.3Mpa.).

2. Put the installed urea nozzle assembly on the test bench, press the button of the test assembly, start to test the air tightness of the assembly, and observe whether the test result is qualified during the test. If the test result is unqualified, press the stop button , the cylinder returns to the initial state, and other workpieces can be replaced at this time to continue the detection. (The air pressure of the detection assembly connector 1161215-19W is 1.2Mpa, and the air pressure of the detection housing connector 1161212-19W is 0.3Mpa.)

3. After the air tightness test result is qualified, the air pressure of the test assembly joint and the shell joint is cut off, the air pressure of the cylinder is maintained, and the workpiece is kept in a clamped state. Press the water spray test button, and the power plug-in mechanism of the pneumatic assembly is turned on. After the cylinder pushes the plug to connect with the socket, the water spray test starts, and the water spray condition can be viewed through the observation window. After the water spray test is over, the air pressure of the detection assembly is turned on again, and the water in the measuring head is blown out and then stopped. After the test is over, the cylinder restore to the original state.

1. The device of the present invention can realize the collective detection of the air tightness of the parts housing and the assembly; 2. The device of the present invention can realize the collective detection of the air tightness of the parts and the circuit spraying; 3. The new device can easily adjust the fixed angle of the fixed point of the parts for standardization; 4. Energy saving and environmental protection; 5. Lean production.

The above are only the preferred embodiments of the present utility model. It should be pointed out that for those skilled in the art, without departing from the technical principles of the present utility model, several improvements and modifications can be made. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims (2)

1. a gas-driven urea nozzle air tightness test platform, is characterized in that, comprises workbench, electric controller, air tight clamping device, standard sample, spray test control box, water tank (301) and pressurized tank, The electric controller and the standard sample are installed in the rear half area of the top of the workbench, the air-tight clamping device is installed on the top of the workbench, and the spray test control box is installed on the sidewall of the workbench. 2. The air-tightness test platform for air-driven urea nozzles as claimed in claim 1, further comprising a water tank (301) and an observation window (302), wherein a water storage cavity is provided in the water tank (301), and A drain port (303) is communicated with the bottom of the water tank (301), a plurality of groups of support columns are provided at the bottom of the water tank (301), and an observation port is provided on the front side wall of the water tank (301), and the observation port is communicated with the water storage cavity, The observation window (302) is installed at the observation port, and the sealing of the observation window (302) is realized by a plurality of groups of beading strips (304). The upper half of the water tank (301) is provided with a support frame (305), and the A lifting mechanism (306) is arranged on the support frame (305), a conical sealing mechanism (307) is arranged at the bottom end of the lifting mechanism (306), and a detection mechanism (308) is arranged in the rear half area of the support frame (305). , and a support (309) is provided at the front end of the support frame (305), the support (309) is provided with a pneumatic assembly power plug-in mechanism (310), and the detection mechanism (308) is provided with a waterway single Directional valve (311) and air check valve (312).

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