A multifunctional gas path back-blowing leak detection valve device

Abstract

The utility model discloses a multifunctional gas circuit back-blow leak detection valve device, which relates to the field of pressure measurement technology, including an air intake seat, a valve body frame is arranged inside the air intake seat, a servo valve body is arranged in the middle of the valve body frame, pistons are arranged on both inner side walls of the valve body frame, a sensor carrier is arranged on the upper end of the valve body frame, a solenoid valve is arranged on the left side of the inner surface of the air intake seat, and multiple groups of pressure-leading pipes are arranged on the upper end of the solenoid valve and the upper end of the sensor carrier. The utility model discloses a multifunctional gas circuit back-blow leak detection valve device, which can realize four states of operation, calibration, purging and leakage inspection, and the test data can meet the requirements of high-precision tests. Through the control of the solenoid valve, the four states can be switched simply and quickly, which avoids redundant and repetitive operations, shortens the preparation time before the test, and achieves the purpose of improving efficiency and reducing costs.

Description

Technical Field

[0001] The utility model relates to the technical field of pressure measurement, in particular to a multifunctional gas path back-blowing leak detection valve device. Background Art

[0002] Before pressure testing, a series of test preparations such as calibration, leak detection, and purging are generally required to ensure test accuracy. Currently, most products only include some of these functions, so the measurement accuracy cannot meet many high-precision test requirements. In addition, the product channel switching process is cumbersome, time-consuming, and prone to misoperation.

[0003] The existing gas path leak detection device can only realize a single operation function, which cannot meet the requirements of high-precision testing. In addition, the operation process is complicated, time-consuming and costly, and there is a possibility of misoperation, which has a certain adverse effect on the gas path leak detection process. In order to solve the shortcomings of the existing technology, we propose a multifunctional gas path backblowing leak detection valve device. Utility Model Content

[0004] The main purpose of the utility model is to provide a multifunctional gas path back-blowing leak detection valve device, which can effectively solve the problems in the background technology.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] A multifunctional gas circuit back-blow leak detection valve device comprises an air inlet seat, a valve body frame is arranged on the outer surface of the upper end of the air inlet seat, a servo valve body is arranged in the middle of the valve body frame, pistons are arranged on both side walls on the inner side of the valve body frame, a sensor carrier plate is arranged on the upper end of the valve body frame, an electromagnetic valve is arranged on the left side of the inner surface of the air inlet seat, and multiple groups of pressure-guiding pipes are arranged on the upper end of the air inlet seat and the upper end of the sensor carrier plate.

[0007] Preferably, a mounting interface is provided between the valve body frame and the air inlet seat, and the valve body frame is detachably connected to the air inlet seat via the provided mounting interface.

[0008] Preferably, a movable interface is provided between the servo valve body and the valve body frame, and the servo valve body is movably connected to the valve body frame via the provided movable interface.

[0009] Preferably, a mounting interface is provided between the sensor carrier plate and the valve body frame, and the sensor carrier plate is detachably connected to the valve body frame via the provided mounting interface.

[0010] Preferably, a mounting interface is provided between the solenoid valve and the air intake seat, and the solenoid valve is detachably connected to the air intake seat via the provided mounting interface.

[0011] Preferably, the upper outer surface of the sensor carrier is provided with a SUPPLY interface, a RUN REF interface, a CAL interface, a PURGE interface, a CAL REF interface, and a VENT interface, the upper end of the air intake seat is also provided with sixteen groups of air intake channels, and a pressure sensor is provided inside the sensor carrier.

[0012] Beneficial Effects

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] 1. In the utility model, the four states of operation, calibration, purging and leakage check can be realized by setting the air inlet seat and the servo valve body, and the test data can meet the requirements of high-precision tests. Through the control of the solenoid valve, the four states can be switched simply and quickly, avoiding redundant repetitive operations, shortening the preparation time before the test, and achieving the purpose of improving efficiency, saving manpower and reducing costs.

[0015] 2. In the utility model, a variety of gas passages with four functions of operation, calibration, purging and leakage check can be realized through the servo valve body. Different positions of the servo frame assembly can be connected to different gas path states. The utility model can directly switch the operation, calibration, purging and leakage check states through software operation, saving preparation time before testing, realizing efficient testing through simple operation, and achieving efficient testing through rapid switching of the four modes, while improving the reliability of the test results. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 It is a schematic diagram of the structure of the solenoid valve of the utility model;

[0018] Figure 3 It is a schematic diagram of the servo valve body and frame structure of the utility model;

[0019] Figure 4 It is a schematic diagram of the top view of the outer surface of the air intake seat of the utility model.

[0020] In the figure: 1. Inlet seat; 2. Valve body frame; 3. Servo valve body; 4. Piston; 5. Solenoid valve; 7. Sensor carrier plate. DETAILED DESCRIPTION

[0021] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0022] like Figure 1-Figure 4As shown, a multifunctional gas circuit back-blowing leak detection valve device comprises an air inlet seat 1, which is used to install the device, a valve body frame 2 is arranged on the upper outer surface of the air inlet seat 1, and the valve body frame 2 is installed on the upper end of the air inlet seat 1, a servo valve body 3 is arranged in the middle of the valve body frame 2, and a movable interface is arranged between the servo valve body 3 and the valve body frame 2, the servo valve body 3 can move in the middle of the valve body frame 2, and pistons 4 are arranged on both sides of the inner side wall of the valve body frame 2, the piston 4 comprises a frame side plate piston and a servo module piston, and the servo valve body 3 can be pushed to the upper left, lower left, upper right and lower right four positions of the valve body frame 2 by controlling the piston 4. The servo valve body 3 is movable. A sensor carrier plate 7 is arranged on the upper end of the valve body frame 2. The sensor carrier plate 7 is used to install a pressure sensor. A solenoid valve 5 is arranged on one side of the outer surface of the upper end of the air intake seat 1. The solenoid valve 5 can control the pressure to push the piston 4 to move the servo valve body 3 to the specified position. The upper end of the air intake seat 1 and the upper end of the sensor carrier plate 7 are both provided with multiple groups of pressure-leading pipes, which are used to connect with the hose of the pressure source. The four groups of pressure-leading pipes next to the solenoid valve 5 are respectively connected with the pressure-leading pipes of the four groups of piston 4 positions. The corresponding pistons 4 are pushed by the solenoid valve 5 to place the servo valve body 3 in the target position. The upper end of the air intake seat 1 is provided with a SUPPLY interface, a RUN REF interface, a CAL interface, a PURGE interface, a CAL REF interface, and a VENT interface. The upper end of the air intake seat 1 is also provided with sixteen groups of air intake channels. A pressure sensor is arranged inside the sensor carrier plate 7, and the pressure sensor is mounted on the sensor carrier plate.

[0023] When the pipelines are connected in the device operation state, the air inlet and the operation reference port are directly connected to the pressure sensor, and the pressure data can be directly collected.

[0024] When the device is in calibration state, the pressure is connected to the sensor through the calibration or calibration reference port. The specified calibration pressure is provided at the calibration or calibration reference port to facilitate system calibration and improve test accuracy.

[0025] When the device is in the purge state, the pipeline is connected, the input channel is disconnected from the sensor collection end, and the purge gas directly enters from the purge channel and blows out from the input port to achieve the cleaning purpose.

[0026] When the pipeline is connected in the leakage detection state of the device, the gas source connected from the calibration port enters the input pipeline and then enters the sensor from the input pipeline.

[0027] It should be noted that the utility model is a multifunctional gas circuit back-blow leak detection valve device. When in use, the pressure source is connected to the SUPPLY port on the pressure measurement panel 7, the system is electrically connected to the software, and after the solenoid valve 5 receives the valve push command, the control pressure pushes the piston 4 to move the servo valve body 3 to the specified position.

[0028] Before the formal pressure test, the gas channel needs to be purged to discharge the pollutants in the gas channel. Push the servo valve body 3 to the purge position. At this time, the input channel is disconnected from the sensor acquisition end, and pressure is applied from the PURGE port. The purge gas is blown out directly from the input port to ensure that the inside of the equipment is clean and free of debris in a good test state.

[0029] After purging, perform a leak test to confirm whether the equipment is well sealed. Push the servo valve body 3 to the leak detection position. At this time, the gas source connected from the CAL port enters the input pipeline. After the pressure fills the sealed input pipeline, it enters the operating state. The sensor readings can be used to analyze whether there is a leak in each input pipeline.

[0030] After confirming that the device has no leakage, the calibration mode can be used to provide the sensor with a pressure conversion coefficient that better matches the current environment. Push the servo valve body 3 to the calibration position. In this state, the pressure is connected to the sensor through the CAL port and the CAL-REF port. According to the software instructions, provide the specified pressure from the CAL port or the CAL-REF port. After the system completes the automatic calibration, save the newly generated coefficient to improve the accuracy and reliability of the measurement results.

[0031] After the above operations, the measurement accuracy and working reliability of the equipment are greatly improved, and the servo valve body 3 can be pushed to switch to the running state for pressure testing. At this time, the intake channel and RUN-REF are directly connected to the pressure sensor, and the pressure data is directly collected after the corresponding collection pressure of each channel is connected.

[0032] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A multifunctional gas circuit back-blowing leak detection valve device, comprising an air inlet seat (1), characterized in that: A valve body frame (2) is arranged inside the air intake seat (1), a servo valve body (3) is arranged in the middle of the valve body frame (2), pistons (4) are arranged on both inner side walls of the valve body frame (2), a sensor carrier plate (7) is arranged at the upper end of the valve body frame (2), a solenoid valve (5) is arranged on the left side of the inner surface of the air intake seat (1), and a plurality of pressure-guiding pipes are arranged at the upper end of the air intake seat (1) and the upper end of the sensor carrier plate (7).

2. A multifunctional gas circuit back-blowing leak detection valve device according to claim 1, characterized in that: A mounting interface is provided between the valve body frame (2) and the air inlet seat (1), and the valve body frame (2) is detachably connected to the air inlet seat (1) via the provided mounting interface.

3. A multifunctional gas circuit back-blowing leak detection valve device according to claim 1, characterized in that: A movable interface is provided between the servo valve body (3) and the valve body frame (2), and the servo valve body (3) is movably connected to the valve body frame (2) via the provided movable interface.

4. A multifunctional gas circuit back-blowing leak detection valve device according to claim 1, characterized in that: A mounting interface is provided between the sensor carrier plate (7) and the valve body frame (2), and the sensor carrier plate (7) is detachably connected to the valve body frame (2) via the provided mounting interface.

5. A multifunctional gas circuit back-blowing leak detection valve device according to claim 1, characterized in that: A mounting interface is provided between the solenoid valve (5) and the air intake seat (1), and the solenoid valve (5) is detachably connected to the air intake seat (1) via the provided mounting interface.

6. A multifunctional gas circuit back-blowing leak detection valve device according to claim 1, characterized in that: A SUPPLY interface, a RUN REF interface, a CAL interface, a PURGE interface, a CAL REF interface, and a VENT interface are arranged on one side of the upper outer surface of the air intake seat (1); sixteen groups of air intake channels are also arranged on the upper outer surface of the air intake seat (1); and a pressure sensor is arranged inside the sensor carrier plate (7).

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