Integrated gas corrosion detection device

Abstract

The utility model relates to the technical field of equipment corrosion detection, in particular to an integrated gas corrosion detection device. Comprising a detection box, a gas pump is arranged in the detection box, a first gas inlet of the gas pump is connected with an air source, a second gas inlet of the gas pump is connected with a corrosion gas source, and the gas pump is further provided with a gas distribution outlet; the gas distribution box is connected with the gas pump through a normally-open three-way valve, a gas distribution outlet of the gas pump is connected with a first connector of the normally-open three-way valve, a gas distribution inlet of the gas distribution box is connected with a second connector of the normally-open three-way valve, and the device to be tested is arranged in the gas distribution box; and the gas detector is controllably connected with the gas distribution outlet. According to the utility model, mixed gas with required concentration can be configured through the gas pump, various testing environments for carrying out corrosion resistance testing on the gas detector are provided through the gas distribution box, and the gas detector can regularly detect the concentration of the mixed gas, so that the accuracy and stability of the tested gas are ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to the equipment corrosion detection technical field, concretely relates to an integrated gas corrosion detection device. BACKGROUND

[0002] Household gas alarm refers to the use in the family environment, using gas sensor to detect combustible gas and its incomplete combustion products, when detecting the gas concentration reaches the alarm setting value, the gas alarm can send out sound and light alarm. Its design goal is to continuously and stably run without replacing parts, gas calibration and maintenance in the design service life.

[0003] In addition to meeting all the requirements of GB15322.2, the maintenance-free household combustible gas alarm should also meet the design service life of not less than 5 years, the alarm surface should have no corrosion, coating peeling and blistering phenomenon, no obvious scratch, crack, burr and other mechanical damage, no loosening of fastening parts and other related standards.

[0004] Because there are corrosive gases such as sulfur dioxide in the air, corrosive gases can easily affect the detection ability of the gas alarm in the household scene, so the gas alarm needs to have high corrosion resistance, and there is a lack of effective detection of the gas alarm in the prior art, which makes it difficult to test the corrosion resistance of the gas alarm.

[0005] In the prior art, Chinese utility model patent (publication number CN216847401U) proposes a corrosion testing device to simulate corrosive environment, by placing the gas alarm in the test chamber for corrosion test, but this design scheme is old, the mixed gas is mixed by the flow meter combined with the pipeline, which not only has poor mixing effect but also has complex pipeline layout, inconvenient operation and maintenance, and low gas concentration adjustment efficiency. UTILITY MODEL CONTENTS

[0006] The utility model aims at providing an integrated gas corrosion detection device to solve the above technical problems.

[0007] The technical problem solved by the utility model can be realized by the following technical scheme:

[0008] An integrated gas corrosion detection device, comprising a detection box, the detection box is provided with,

[0009] A gas pump, the first gas inlet of the gas pump is connected with an air source, the second gas inlet of the gas pump is connected with a corrosive gas source, and the gas pump further has a gas distribution outlet for outputting mixed gas.

[0010] A gas distribution tank is connected to the gas pump through a normally open three-way valve, a gas distribution outlet of the gas pump is connected to a first joint of the normally open three-way valve, a gas distribution inlet of the gas distribution tank is connected to a second joint of the normally open three-way valve, and the device to be tested is arranged in the gas distribution tank.

[0011] A gas detector is connected to a third joint of the normally open three-way valve through a switching valve, and the gas detector is controllably connected to the gas distribution outlet.

[0012] Preferably, at least a part of a gas pipeline between the gas distribution inlet of the gas distribution tank and the normally open three-way valve is a heating pipe, and the heating pipe is arranged in a zigzag manner on the side of the gas distribution tank.

[0013] Preferably, the switching valve is a three-way valve, a first joint of the switching valve is connected to the third joint of the normally open three-way valve, and a second joint of the switching valve is connected to a detection inlet of the gas detector.

[0014] Further comprising a gas suction pump for controlling the inlet gas flow of the gas detector, and the gas suction pump is connected to a third joint of the switching valve.

[0015] Preferably, a mounting rack and a thermocouple are arranged in the gas distribution tank, the mounting rack comprises a plurality of rack bodies arranged in the gas distribution tank in a vertical direction, and a plurality of alarms for detecting the device to be tested are arranged on the mounting rack in different directions of the device to be tested.

[0016] Preferably, a locking clamp is arranged on the side of the gas distribution tank, a locking hook matched with the locking clamp is arranged on a tank door of the gas distribution tank, and a plurality of reinforcing ribs are further arranged on the outside of the tank body of the gas distribution tank.

[0017] Preferably, the gas pump comprises,

[0018] The first gas inlet, the second gas inlet and the gas distribution outlet are arranged on the outside shell of the gas pump.

[0019] A first mass flow meter and a second mass flow meter are arranged in the gas pump, the first mass flow meter is connected to the first gas inlet to output an air flow signal, and the second mass flow meter is connected to the second gas inlet to output a corrosion gas flow signal.

[0020] A proportional control board is connected to the first mass flow meter to output an air amount control signal based on the air flow signal, and is connected to the second mass flow meter to output a corrosion gas control amount signal based on the corrosion gas flow signal.

[0021] A gas mixer is connected with the first mass flow meter and the second mass flow meter respectively, and the gas mixer mixes the air and the corrosion gas according to the air amount control signal and the corrosion gas amount control signal to obtain the mixed gas, and the gas outlet of the gas mixer is connected with the gas distribution outlet.

[0022] A switching power supply is arranged in the gas pump, and the switching power supply is connected with an external power supply voltage through a filter interface arranged on the outer shell of the gas pump.

[0023] Preferably, the device further comprises,

[0024] A first water washing tank is connected with the gas detector, and the gas outlet of the first water washing tank is connected with a first water washing gas outlet.

[0025] A second water washing tank is connected with the gas distribution box, and the gas outlet of the second water washing tank is connected with a second water washing gas outlet.

[0026] Preferably, the outer surface of the detection box is provided with a controller, the controller is connected with the gas pump and the gas detector, and the controller is provided with a control panel for input control and output display.

[0027] Preferably, the detection box comprises an upper box body and a lower box body, the gas distribution box is arranged in the upper box body, and the gas pump and the gas detector are arranged in the lower box body.

[0028] Preferably, the upper box body is provided with an observation window corresponding to the position of the gas distribution box.

[0029] The device has the advantages that: the device can configure the mixed gas with the required concentration through the gas pump, the gas distribution box can provide various test environments for the corrosion resistance test of the gas detector, the gas detector can detect the concentration of the mixed gas regularly, and the test gas is accurate and stable. BRIEF DESCRIPTION OF DRAWINGS

[0030] Figure 1 The figure is a gas circuit diagram of the integrated gas corrosion detection device in the embodiment of the device.

[0031] Figure 2 The figure is a structural schematic diagram of the gas pump in the embodiment of the device.

[0032] Figure 3It is the internal structure schematic view of the integrated gas corrosion detection device in the embodiment of the utility model;

[0033] Figure 4 It is the external structure schematic view of the integrated gas corrosion detection device in the embodiment of the utility model;

[0034] Figure 5 It is the side view of the integrated gas corrosion detection device in the embodiment of the utility model;

[0035] Figure 6 It is the side view of the mounting frame in the embodiment of the utility model;

[0036] Figure 7 It is the top view of the mounting frame in the embodiment of the utility model;

[0037] Figure 8 It is the front view of the mounting frame in the embodiment of the utility model;

[0038] Figure 9 It is the assembly schematic view of the mounting frame and the gas distribution tank in the embodiment of the utility model;

[0039] Figure 10 It is the assembly schematic view of the mounting frame and the gas distribution tank in the embodiment of the utility model;

[0040] Figure 11 It is the side view of the gas distribution tank in the embodiment of the utility model;

[0041] Figure 12 It is the top view of the gas distribution tank in the embodiment of the utility model.

[0042] In the drawing: 1, air source; 11, the drainage port of air source; 2, gas pump; 21, the first gas inlet of gas pump; 22, the second gas inlet of gas pump; 23, the gas distribution outlet of gas pump; 24, first mass flowmeter; 25, second mass flowmeter; 26, proportional control board; 27, gas mixer; 28, switching power supply; 29, filter interface; 3, normally open three-way valve; 4, gas distribution tank; 41, mounting frame; 42, locking clamp; 43, locking hook; 44, reinforcing rib; 5, gas detector; 6, switching valve; 7, air pump; 81, first water washing tank; 82, second water washing tank; 9, detection tank; 91, upper box body; 92, lower box body; 93, heating pipe; 94, controller; 95, observation window. DETAILED DESCRIPTION

[0043] 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 of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0044] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0045] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, but this is not intended to limit the present invention.

[0046] An integrated gas corrosion detection device, such as Figures 1 to 12 As shown, it includes a detection box 9, and the detection box 9 contains,

[0047] Gas pump 2, the first gas inlet 21 of gas pump 2 is connected to air source 1, the second gas inlet 22 of gas pump 2 is connected to corrosive gas source, and gas pump 2 also has a gas distribution outlet 23 for outputting mixed gas.

[0048] Gas distribution box 4 is connected to gas pump 2 via normally open three-way valve 3. Gas outlet 23 of gas pump 2 is connected to the first connector of normally open three-way valve 3. Gas inlet of gas distribution box 4 is connected to the second connector of normally open three-way valve 3. The device under test is located inside gas distribution box 4.

[0049] The gas detector 5 is connected to the third connector of the normally open three-way valve 3 via the switching valve 6, and can be controlled to connect to the gas distribution outlet 23.

[0050] Specifically, the device to be tested in this utility model is a household gas detector, and the corrosive gas is a corrosive gas present in the air, such as sulfur dioxide (SO2). This utility model provides an integrated gas corrosion detection device for detecting the corrosion resistance of household gas detectors, which mainly includes a gas pump 2, a gas distribution box 4, and a gas detector 5.

[0051] Gas pump 2 is used to precisely mix air and corrosive gas to obtain a mixed gas in a set ratio. In this embodiment, gas pump 2 can be a JF-2311 type gas proportioning pump. The gas flow time calculation method in this utility model is as follows:

[0052] Assume the sampling tube of the entire gas pump 2 is 2m long, the outer diameter of the sampling tube is 6mm, the inner diameter is 4mm, and the volume of the gas mixer 27 is 50ml.

[0053] The formula for calculating the volume of a cylinder is:

[0054] V = πr 2h

[0055] Wherein r is the radius of the cylinder, h is the length of the cylinder, according to the inner radius of the sampling tube is 2mm, the length is 2m, the volume calculation result (considering the error of the intermediate joint, etc.) is about 30ml,

[0056] Ideally, the gas flow in the sampling tube is 2ml / min (SO2 flow), so the sampling tube flow time is:

[0057]

[0058] Therefore, under ideal conditions, the gas in the sampling tube needs 15 minutes to pass completely;

[0059] The volume of the gas mixer 27 is 50ml, the total flow is 5L / min (air flow) and 2ml / min (SO2 flow). The total flow is the flow time of the gas mixer 27

[0060]

[0061] The gas in the gas mixer 27 is completely mixed in 1 second, based on the above calculation, the sampling tube needs 15 minutes to sample completely, while the mixing rate of the gas in the gas mixer 27 is very fast, and the normal sample gas ratio of the utility model can enter the detection state within 20min.

[0062] The gas distribution box 4 is used to place the household gas detector to be tested, and the gas detector 5 is used to collect the mixed gas and detect whether the gas ratio of the mixed gas is consistent with the set requirement.

[0063] In a more preferred embodiment, at least a part of the gas pipeline between the gas distribution inlet of the gas distribution box 4 and the normally open three-way valve 3 is a heating pipe 93, and the heating pipe 93 is arranged in a back-and-forth zigzag manner on the side of the gas distribution box 4.

[0064] Specifically, the heating pipe 93 is used to heat the mixed gas entering the gas distribution box 4, and the heating pipe 93 is arranged in a back-and-forth zigzag manner to increase the heating path in a limited space and improve the heating effect.

[0065] In a more preferred embodiment, the switching valve 6 is a three-way valve, the first joint of the switching valve 6 is connected to the third joint of the normally open three-way valve 3, and the second joint of the switching valve 6 is connected to the detection inlet of the gas detector 5.

[0066] Further comprising a gas suction pump 7 for controlling the inlet gas flow of the gas detector 5, and the third joint of the switching valve 6 is connected to the gas suction pump 7.

[0067] In a preferred embodiment, the gas distribution box 4 is provided with a mounting rack 41 and a thermocouple, the mounting rack 41 comprises a plurality of layers of rack bodies distributed in the vertical direction in the gas distribution box 4, and a plurality of alarms for detecting the devices to be tested are arranged on the mounting rack 41 at respective orientations of the devices to be tested.

[0068] In a preferred embodiment, the side of the gas distribution box 4 is provided with a locking clamp 42, the box door of the gas distribution box 4 is provided with a locking hook 43 matched with the locking clamp 42, and the outer side of the box body of the gas distribution box 4 is further provided with a plurality of reinforcing ribs 44.

[0069] In a preferred embodiment, the gas pump 2 comprises,

[0070] The first gas inlet 21, the second gas inlet 22, and the gas distribution outlet are arranged on the outer shell of the gas pump 2;

[0071] The first mass flow meter 24 and the second mass flow meter 25 are arranged in the gas pump 2, the first mass flow meter 24 is connected to the first gas inlet 21 to output an air flow signal, and the second mass flow meter 25 is connected to the second gas inlet 22 to output a corrosive gas flow signal;

[0072] The proportional control board 26 is connected to the first mass flow meter 24 to output an air amount control signal based on the air flow signal, and is connected to the second mass flow meter 25 to output a corrosive gas control amount signal based on the corrosive gas flow signal;

[0073] The gas mixer 27 is connected to the first mass flow meter 24 and the second mass flow meter 25, respectively, and according to the air amount control signal and the corrosive gas control amount signal, the gas mixer 27 mixes the air and the corrosive gas to obtain a mixed gas, and the gas outlet of the gas mixer 27 is connected to the gas distribution outlet;

[0074] The switching power supply 28 is arranged in the gas pump 2, and the switching power supply 28 is connected to an external power supply voltage through a filter interface 29 arranged on the outer shell of the gas pump 2.

[0075] Specifically, the proportional control board 26 is used to control each device in the gas pump 2, the proportional control board 26 is connected to the controller 94, and according to a required concentration value input by the controller 94, the proportional control board 26 controls the air and sulfur dioxide inlet amount in the gas mixer 27 to obtain the required mixed gas.

[0076] In a preferred embodiment, the gas detection instrument 5 further comprises,

[0077] The first water washing tank 81 is connected to the gas outlet of the gas detection instrument 5, the gas outlet of the first water washing tank 81 is connected to the first water washing gas outlet, and the mixed gas after water washing is discharged from the first water washing gas outlet.

[0078] The second water washing tank 82 is connected with the gas outlet of the gas distribution box 4, and the gas outlet of the second water washing tank 82 is connected with a second water washing gas outlet, through which the mixed gas after being washed is discharged.

[0079] In a preferred embodiment, the outer surface of the detection box 9 is provided with a controller 94, which is connected with the gas pump 2 and the gas detector 5, and has a control panel for input control and output display.

[0080] In a preferred embodiment, the detection box 9 comprises an upper box body 91 and a lower box body 92, the gas distribution box 4 is arranged in the upper box body 91, and the gas pump 2 and the gas detector 5 are arranged in the lower box body 92.

[0081] In a preferred embodiment, the upper box body 91 is provided with an observation window 95 corresponding to the position of the gas distribution box 4.

[0082] In summary, the utility model has the advantages of good sealing performance and simple structure, and can be applied to the test of other low-concentration corrosive gases by replacing the gas detector 5 for different objects and adjusting the concentration parameters.

[0083] The above description is only the preferred embodiment of the utility model, and does not limit the implementation and protection scope of the utility model. For those skilled in the art, it should be realized that any equivalent replacement and obvious change based on the description and drawings of the utility model should be included in the protection scope of the utility model.

Claims

1. An integrated gas corrosion detection device, characterized by, The detection box (9) is provided with, A gas pump (2), a first gas inlet (21) of the gas pump (2) is connected with an air source (1), a second gas inlet (22) of the gas pump (2) is connected with a corrosion gas source, and the gas pump (2) is further provided with a gas distribution outlet (23) for outputting mixed gas; A gas distribution box (4) is connected with the gas pump (2) through a normally open three-way valve (3), the gas distribution outlet (23) of the gas pump (2) is connected with a first joint of the normally open three-way valve (3), a gas distribution inlet of the gas distribution box (4) is connected with a second joint of the normally open three-way valve (3), and a device to be detected is arranged in the gas distribution box (4); A gas detector (5) is connected with a third joint of the normally open three-way valve (3) through a switching valve (6), and the gas detector (5) is controllably connected with the gas distribution outlet (23).

2. The integrated gas corrosion detection apparatus of claim 1, wherein At least part of a gas pipeline between the gas distribution inlet of the gas distribution box (4) and the normally open three-way valve (3) is a heating pipe (93), and the heating pipe (93) is arranged in a back-and-forth zigzag manner on a side of the gas distribution box (4).

3. The integrated gas corrosion detection apparatus of claim 1, wherein The switching valve (6) is a three-way valve, a first joint of the switching valve (6) is connected with the third joint of the normally open three-way valve (3), and a second joint of the switching valve (6) is connected with a detection inlet of the gas detector (5); Further comprising a gas suction pump (7) for controlling the inlet gas flow of the gas detector (5), and the gas suction pump (7) is connected with a third joint of the switching valve (6).

4. The integrated gas corrosion detection apparatus of claim 1, wherein The gas distribution box (4) is provided with a mounting rack (41) and a thermocouple, the mounting rack (41) comprises a plurality of layers of rack bodies arranged in a vertical or horizontal direction in the gas distribution box (4), and a plurality of alarms for detecting the device to be detected are arranged on the mounting rack (41) in respective directions of the device to be detected.

5. The integrated gas corrosion detection apparatus of claim 1, wherein A locking clamp (42) is arranged on a side of the gas distribution box (4), a locking hook (43) matched with the locking clamp (42) is arranged on a door of the gas distribution box (4), and a plurality of reinforcing ribs (44) are further arranged on an outer side of the gas distribution box (4).

6. The integrated gas corrosion detection apparatus of claim 1, wherein The gas pump (2) comprises, The first gas inlet (21), the second gas inlet (22) and the gas distribution outlet are arranged on an outer side shell of the gas pump (2); A first mass flowmeter (24) and a second mass flowmeter (25) are arranged in the gas pump (2), the first mass flowmeter (24) is connected with the first gas inlet (21) to output an air flow signal, and the second mass flowmeter (25) is connected with the second gas inlet (22) to output a corrosion gas flow signal; A proportional control board (26) is connected with the first mass flowmeter (24) to output an air amount control signal based on the air flow signal, and is connected with the second mass flowmeter (25) to output a corrosion gas control amount signal based on the corrosion gas flow signal; A gas mixer (27) is connected with the first mass flow meter (24) and the second mass flow meter (25) respectively, and the gas mixer (27) mixes the air and the corrosion gas according to the air amount control signal and the corrosion gas control amount signal to obtain the mixed gas, and the gas outlet of the gas mixer (27) is connected with the gas distribution outlet; A switching power supply (28) is arranged in the gas pump (2), and the switching power supply (28) is connected with an external power supply voltage through a filter interface (29) arranged on the outer shell of the gas pump (2).

7. The integrated gas corrosion detection apparatus of claim 1, wherein Further comprising, A first water washing tank (81) is connected with the gas detection instrument (5), and the gas outlet of the first water washing tank (81) is connected with a first water washing gas outlet, and the mixed gas after water washing is discharged from the first water washing gas outlet; A second water washing tank (82) is connected with the gas distribution box (4), and the gas outlet of the second water washing tank (82) is connected with a second water washing gas outlet, and the mixed gas after water washing is discharged from the second water washing gas outlet.

8. The integrated gas corrosion detection apparatus of claim 1, wherein The outer surface of the detection box (9) is provided with a controller (94), and the controller (94) is connected with the gas pump (2) and the gas detection instrument (5), and the controller (94) is provided with a control panel for input control and output display.

9. The integrated gas corrosion detection apparatus of claim 1, wherein The detection box (9) comprises an upper box body (91) and a lower box body (92), the gas distribution box (4) is arranged in the upper box body (91), and the gas pump (2) and the gas detection instrument (5) are arranged in the lower box body (92).

10. The integrated gas corrosion detection apparatus of claim 9, wherein, The upper box body (91) is provided with an observation window (95) corresponding to the position of the gas distribution box (4).

Images