Multifunctional gas distribution test device

Abstract

The utility model belongs to the field of gas distribution tests, and particularly relates to a multifunctional gas distribution test device which comprises a placing box, a gas distribution tank and a supporting seat, the inner wall of the placing box is fixedly connected with the gas distribution tank, the supporting seat is provided with a rotating assembly and a pushing assembly, and the outer wall of the gas distribution tank is fixedly connected with a gas outlet pipeline. The multifunctional gas distribution test device can flexibly control gases of different gas sources to flow into the gas distribution tank through the first valve switch and the six sets of switches, diversified gas distribution requirements are met, precise gas distribution is achieved, meanwhile, the top of the gas distribution tank is connected with the detection pipeline and the gas analyzer, and a valve can be opened to convey a sample to the analyzer before detection, so that the detection efficiency is improved. The gas distribution concentration can be monitored in real time, the gas distribution quality can be guaranteed, the gas outlet pipeline 7 can be directly connected with pipelines of other equipment, the gas outlet pipeline 7 can be directly connected with the other equipment, and the flexibility of the device is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of gas distribution test, concretely to a multifunctional gas distribution test device. BACKGROUND

[0002] In the field of industrial safety, fire-fighting scientific research and equipment development, explosion ignition test is extremely critical. With the expansion of industry, the application of combustible gas is increasing, such as petroleum chemical industry, coal mining, gas transportation and other industries, and the risk of explosion caused by gas leakage is high. Therefore, it is urgent to explore the explosion characteristics of combustible gas and air mixture, and the accurate mixing ratio of combustible gas and air is the most important. The explosion limit and ignition energy of different combustible gases are different, and are affected by gas concentration, environmental temperature and pressure and other factors.

[0003] At present, the existing gas distribution device mostly relies on manual replacement of the collection tank during the gas filling process, which not only has low efficiency, but also is prone to gas leakage or unstable installation of the collection tank due to human operation errors. In view of this, a multifunctional gas distribution test device is proposed. CONTENT OF THE UTILITY MODEL

[0004] The main purpose of the utility model is to provide a multifunctional gas distribution test device, which can solve the problems raised in the background technology.

[0005] To achieve the above purpose, the multifunctional gas distribution test device provided by the utility model comprises a placing box, a gas distribution tank and a supporting seat, the inner wall of the placing box is fixedly connected with the gas distribution tank, the supporting seat is provided with a rotating assembly, the supporting seat is provided with a pushing assembly, the outer wall of the gas distribution tank is fixedly connected with a gas outlet pipeline, the outer wall of the gas outlet pipeline is fixedly connected with an electric ball valve, and the rotating assembly comprises:

[0006] A motor is fixedly connected to the outer wall of the supporting seat, and a placing disc is rotatably connected to the inner wall of the supporting seat.

[0007] A connecting rod is slidably connected to the inner wall of the placing disc, and the outer wall of the connecting rod is fixedly connected with a placing block.

[0008] A fixed block is fixedly connected to the outer wall of the placing disc, and the inner wall of the fixed block is fixedly connected with a threaded rod,

[0009] A connecting arc block is rotatably connected to the bottom of the threaded rod, and the outer wall of the connecting arc block is fixedly connected with a pressing block.

[0010] A stop block is fixedly connected to the bottom of the pressing block, and the top of the stop block is fixedly connected with a guide rod.

[0011] Preferably, the output end of the motor is fixedly connected to the inner wall of the placing disc, a collecting tank is placed on the placing block, and the fixed block is penetrated by a guide rod, which slides on the inner wall of the fixed block to guide the movement of the connecting arc block.

[0012] Preferably, the pushing assembly comprises a height-increasing seat, and the top of the height-increasing seat is fixedly connected with an electric cylinder seat.

[0013] Preferably, the outer wall of the connecting rod is fixedly connected with a stress plate, the stress plate is elastically connected to the placing disc through a spring, the outer wall of the electric ball valve is threadedly connected with a stress disc, the connecting rod is provided with two groups, and a tapered hole is formed in the stress plate.

[0014] Preferably, the gas distribution tank is fixedly connected with an air inlet main pipeline on the side away from the air outlet pipeline, and the outer wall of the air inlet main pipeline is fixedly connected with six branch pipes.

[0015] Preferably, the top of the gas distribution tank is fixedly connected with a detection pipeline, and the top of the placing box is fixedly connected with a gas analyzer.

[0016] The multifunctional gas distribution test device has the following beneficial effects:

[0017] (1) The multifunctional gas distribution test device comprises a rotating assembly driven by a motor and a pushing assembly controlled by an electric cylinder, and realizes automatic rotation and position switching and gas filling operation of the collecting tank.

[0018] (2) The multifunctional gas distribution test device can flexibly control the inflow of different gas sources into the gas distribution tank through the valve switch one and the six groups of switches, meet diversified gas distribution requirements, realize precise gas distribution, and simultaneously connect the detection pipeline and the gas analyzer on the top of the gas distribution tank. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or prior art description, obviously, the drawings described in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained according to the structure shown in these drawings without creative labor.

[0020] Figure 1 It is a whole three-dimensional structure schematic diagram of the present application.

[0021] Figure 2 It is a partial cross-section structure schematic diagram of the gas distribution tank and the gas outlet pipeline of the present application.

[0022] Figure 3 It is a partial cross-section structure schematic diagram of the support seat and the placing disc of the present application.

[0023] Figure 4 It is a partial cross-section structure schematic diagram of the connecting arc block and the stop block of the present application.

[0024] Figure 5 It is a structure schematic diagram of the present application Figure 1 It is an enlarged schematic diagram of A.

[0025] The drawings are as follows: 1, placing box; 2, gas distribution tank; 3, support seat; 4, rotating assembly; 41, motor; 42, placing disc; 43, connecting rod; 44, placing block; 45, fixed block; 46, threaded rod; 47, connecting arc block; 48, pressing block; 49, stop block; 410, guide rod; 5, collecting tank; 6, pushing assembly; 61, heightening seat; 62, electric cylinder seat; 63, pushing block; 64, stress plate; 65, spring; 66, stress disc; 7, gas outlet pipeline; 8, electric ball valve; 9, gas inlet main pipeline; 10, six-way branch pipe; 11, detection pipeline; 12, gas analyzer.

[0026] The realization, functional features and advantages of the present application will be further described with reference to the embodiments and the drawings. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present application will be clearly and completely described with reference to the drawings in the embodiments of the present application, obviously, the described embodiments are only some embodiments of the present application, and not all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative labor are within the protection scope of the present application.

[0028] Please refer to Figure 1 - Figure 5The utility model provides a kind of multifunctional gas distribution test device, including placing box 1, gas distribution tank 2, support seat 3, the inner wall of placing box 1 is fixedly connected with gas distribution tank 2, rotating assembly 4 is provided on support seat 3, pushing assembly 6 is provided on support seat 3, the outer wall of gas distribution tank 2 is fixedly connected with gas outlet pipeline 7, the outer wall of gas outlet pipeline 7 is fixedly connected with electric ball valve 8, rotating assembly 4 includes motor 41, the outer wall of support seat 3 is fixedly connected with motor 41, the inner wall of support seat 3 is rotatably connected with placing disc 42, the inner wall of placing disc 42 is slidably connected with connecting rod 43, connecting rod 43 penetrates placing disc 42, the outer wall of connecting rod 43 is fixedly connected with placing block 44, the outer wall of placing disc 42 is fixedly connected with fixed block 45, the inner wall of fixed block 45 is fixedly connected with threaded rod 46, the top of threaded rod 46 is fixedly connected with adjusting block, and threaded rod 46 is rotated by rotating adjusting block.

[0029] In the utility model, the bottom of threaded rod 46 is rotatably connected with connecting arc block 47, the outer wall of connecting arc block 47 is fixedly connected with pressing block 48, the bottom of pressing block 48 is fixedly connected with stop block 49, and curved surface is arranged on pressing block 48 and stop block 49, contact occurs between curved surface and the surface of collection tank 5, so as to reduce scratch on collection tank 5, the top of stop block 49 is fixedly connected with guide rod 410, the output end of motor 41 is fixedly connected on the inner wall of placing disc 42, collection tank 5 is placed on placing block 44, fixed block 45 is penetrated by guide rod 410, guide rod 410 is slid on the inner wall of fixed block 45, and the movement of connecting arc block 47 is guided, rotating placing disc 42 by motor 41, collection tank 5 filled with gas is turned away, empty collection tank 5 is turned to gas filling area, and the whole process does not need manual frequent replacement of collection tank 5, so that gas filling efficiency is greatly improved.

[0030] Further, pushing assembly 6 includes heightening seat 61, electric cylinder seat 62 is fixedly connected to the top of heightening seat 61, pushing block 63 is fixedly connected to the output end of electric cylinder seat 62, the bottom of heightening seat 61 is fixedly connected to the top of support seat 3, pushing block 63 is flat bottomed taper block, pushing block 63 is moved by controlling electric cylinder seat 62, the area between pushing block 63 and stress disc 66 is gas filling area, the outer wall of connecting rod 43 is fixedly connected with stress plate 64, stress plate 64 and placing disc 42 are elastically connected through spring 65, stress disc 66 is threadedly connected to the outer wall of electric ball valve 8, connecting rod 43 is provided with two groups, taper hole is formed in stress plate 64, pushing block 63 can be clamped into taper hole, through hole is formed in stress disc 66, so that gas can leave from the through hole;

[0031] In the process of gas distribution, the control of gas pressure and concentration is the key link. The pressure sensor and pressure regulating valve are installed on the inlet pipeline 9 of the gas distribution tank 2. The pressure sensor monitors the gas pressure entering the gas distribution tank 2 in real time and feeds back the data to the control system. When the pressure is too high or too low, the control system will automatically adjust the pressure regulating valve to stabilize the gas pressure entering the gas distribution tank 2 within the set range. For the control of gas concentration, on the one hand, the amount of gas entering the gas distribution tank 2 is controlled by accurately adjusting the opening and closing time of the six groups of switches on the six branch pipes 10, thereby adjusting the concentration ratio of the mixed gas; on the other hand, the data fed back by the gas analyzer 12 in real time are combined for dynamic adjustment. In the initial stage of gas distribution, the amount of each gas entering is preset according to the target concentration. As the gas distribution process proceeds, the gas analyzer 12 continuously detects the gas concentration in the gas distribution tank 2. Once a deviation between the actual concentration and the target concentration is detected, the control system will timely adjust the opening and closing degree of the switches on the six branch pipes 10, so as to ensure that the gas distribution concentration always meets the requirements and realizes high-precision gas distribution.

[0032] On the inlet pipeline 9 of the gas distribution tank 2 and each branch of the six branch pipes 10, a high-precision mass flow controller (MFC) is integrated. The controller has a built-in flow sensor and proportional regulating valve, which can monitor and feed back the gas flow data of each gas source to the central control system in real time, and dynamically adjust the valve opening degree through the proportional regulating valve, so as to ensure that each gas source is input into the gas distribution tank 2 according to the preset ratio (accuracy ±0.5%). When multi-gas mixed gas distribution is performed, the system automatically calculates the required flow value of each gas according to the preset concentration ratio, and dynamically adjusts the valve opening degree of each branch through the mass flow controller, so as to ensure that different gas sources are accurately input into the gas distribution tank 2 according to the set ratio. At the same time, a temperature sensor (model PT100) and a pressure transmitter (range 0-1MPa, accuracy ±0.5%FS) are installed on the inner wall of the gas distribution tank 2 to collect the temperature and pressure parameters of the gas in the tank in real time. The concentration calculation results are corrected by temperature and pressure compensation combined with the gas state equation, so as to further improve the gas distribution accuracy.

[0033] In the process of gas blending, the gas analyzer 12 (which can adopt infrared spectrum or electrochemical analysis module) continuously extracts the mixed gas sample in the blending tank 2 through the detection pipeline 11 and analyzes the concentration of each component (such as the volume fraction of methane, oxygen, and nitrogen) in real time. The analysis data is transmitted to the control system through 4-20 mA analog signal or Modbus communication protocol and compared with the target concentration value. If the detected concentration deviation exceeds the allowed threshold (such as ±0.5%), the system immediately starts the dynamic adjustment program: first, adjust the set value of the mass flow controller according to the deviation direction (positive / negative) to change the input flow of the corresponding gas source; second, fine-tune the total inlet gas pressure through the pressure regulating valve of the inlet pipeline 9 to ensure the uniformity of the gas mixture in the tank. This closed-loop control process is executed 10 times per second until the gas analyzer 12 feedback data stabilizes within the target range, finally meeting the explosion limit test precision requirements specified in the national standard GB / T38301-2019. The mass flow controller, temperature sensor, pressure transmitter, pressure sensor, and pressure regulating valve described above are all existing technologies, so they will not be described in detail.

[0034] Further, the blending tank 2 is fixedly connected to the inlet pipeline 9 away from the outlet pipeline 7. The outer wall of the inlet pipeline 9 is fixedly connected to six branch pipes 10. In order to facilitate the control of gas inflow, a valve switch one is arranged on the inlet pipeline 9. By operating the valve switch one, the total gas flow entering the blending tank 2 can be effectively controlled. Six independent sets of switches are provided on the six branch pipes 10, which can be easily connected to different gas sources. When different types of gas are needed for blending, the corresponding gas source pipeline is connected to the six sets of switches on the six branch pipes 10. By opening or closing these switches, the gas from different gas sources can be flexibly controlled to enter the inlet pipeline 9 and then flow into the blending tank 2, realizing diversified blending requirements. The top of the blending tank 2 is fixedly connected to a detection pipeline 11, and the top of the placing box 1 is fixedly connected to a gas analyzer 12. A valve switch two is arranged on the detection pipeline 11 and communicates with the gas analyzer 12 through a hose. The valve switch is used to control the delivery of the sample to be detected to the gas analyzer 12. Before detection starts, the valve is opened to allow the sample to flow smoothly into the detection instrument. After detection is completed, the valve is closed to prevent the sample from continuing to flow in and ensure that the detection equipment is not disturbed by the outside world.

[0035] In use, the collection tank 5 is placed on the placing block 44 with the outer wall of the collection tank 5 tightly attached to the stop block 49. The adjusting block is rotated to drive the threaded rod 46 to rotate, and then the connecting arc block 47 with the pressing block 48 approaches the collection tank 5, completing the fixation of the collection tank 5.

[0036] Through starting the electric cylinder base 62, the pushing block 63 is driven to move close to the stress plate 64, the pushing block 63 pushes the stress plate 64 to move, the placing block 44 is moved through the connecting rod 43, the pressing joint of the collecting tank 5 on the placing block 44 is contacted with the stress disc 66, the collecting tank 5 is in the open state, then the electric ball valve 8 is opened, the gas in the gas distribution tank 2 is from the gas outlet pipeline 7, the electric ball valve 8, the stress disc 66 into the collecting tank 5, when the collecting tank 5 collects the gas, the pushing block 63 is separated from the stress plate 64 through the reset of the electric cylinder base 62, at this time, the compressed spring 65 resets, and then drives the stress plate 64 to reset, the placing block 44 is reset in cooperation with the connecting rod 43, and it is noticed that when the collecting tank 5 is separated from the stress disc 66, the pressing joint on the collecting tank 5 resets, the collecting tank 5 is in the closed state, and the automatic gas filling work of a set of collecting tanks 5 is completed;

[0037] Then we start the motor 41, drive the placing disc 42 to rotate, make the collecting tank 5 filled with gas leave the gas filling area, another set of empty collecting tank 5 moves to the gas filling area, complete the automatic and continuous gas filling work, improve the gas filling efficiency, in addition, the gas outlet pipeline 7 of the device can also be directly connected with the pipeline of other equipment, so that it is directly connected with other equipment, and the flexibility of the device is improved.

[0038] The above only describes the preferred embodiments of the utility model, and does not limit the patent range of the utility model, and any equivalent structural transformation made under the inventive concept of the utility model, or direct / indirect application in other related technical fields is included in the patent protection range of the utility model.

Claims

1. A multifunctional gas distribution test device, comprising a placing box (1), a gas distribution tank (2), a supporting seat (3), characterized in that: The inner wall of the placing box (1) is fixedly connected with a gas distribution tank (2), the supporting seat (3) is provided with a rotating assembly (4), the supporting seat (3) is provided with a pushing assembly (6), the outer wall of the gas distribution tank (2) is fixedly connected with a gas outlet pipeline (7), the outer wall of the gas outlet pipeline (7) is fixedly connected with an electric ball valve (8), the rotating assembly (4) comprises: The outer wall of the supporting seat (3) is fixedly connected with a motor (41), and the inner wall of the supporting seat (3) is rotatably connected with a placing disc (42); A connecting rod (43) is slidably connected to the inner wall of the placing disc (42), and the outer wall of the connecting rod (43) is fixedly connected with a placing block (44); A fixed block (45) is fixedly connected to the outer wall of the placing disc (42), and the inner wall of the fixed block (45) is fixedly connected with a threaded rod (46), A connecting arc block (47) is rotatably connected to the bottom of the threaded rod (46), and the outer wall of the connecting arc block (47) is fixedly connected with a pressing block (48); A stop block (49) is fixedly connected to the bottom of the pressing block (48), and the top of the stop block (49) is fixedly connected with a guide rod (410).

2. The multifunction gas distribution test device according to claim 1, wherein: The output end of the motor (41) is fixedly connected to the inner wall of the placing disc (42), the placing block (44) is placed with a collecting tank (5), and the fixed block (45) is penetrated by the guide rod (410).

3. The multifunction gas distribution test device of claim 1, wherein: The pushing assembly (6) comprises a heightening seat (61), and the top of the heightening seat (61) is fixedly connected with an electric cylinder seat (62), and the output end of the electric cylinder seat (62) is fixedly connected with a pushing block (63).

4. The multifunction gas distribution test device of claim 1, wherein: The outer wall of the connecting rod (43) is fixedly connected with a stress plate (64), and the stress plate (64) is elastically connected with the placing disc (42) through a spring (65), and the outer wall of the electric ball valve (8) is threadedly connected with a stress disc (66).

5. The multifunction gas distribution test device of claim 1, wherein: The side, away from the gas outlet pipeline (7), of the gas distribution tank (2) is fixedly connected with an air inlet main pipeline (9), and the outer wall of the air inlet main pipeline (9) is fixedly connected with six branch pipes (10).

6. The multifunction gas distribution test device of claim 1, wherein: The top of the gas distribution tank (2) is fixedly connected with a detection pipeline (11), and the top of the placing box (1) is fixedly connected with a gas analyzer (12).

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