Composite gas detector with built-in gas distribution structure

Abstract

The utility model belongs to the field of gas detection, and particularly relates to a composite gas detector with a built-in gas distribution structure, which comprises a detector shell, a touch screen is mounted on the front surface of the detector shell, and a plurality of audible and visual alarms are mounted at the edge of the detector shell; the air supply mechanism comprises an air inlet valve arranged in an inner cavity of the detector shell, an air inlet end of the air inlet valve is provided with an air pipe, the other end of the air pipe is connected with an air inlet end seat, and the air inlet end seat is provided with an interface connecting pipe end seat; the gas inlet valve and the three-way gas distribution valve distribute gas to be detected for the first time; after sufficient to-be-detected gas is input into the detection box, a gas supply end pipe channel is cut off, and redundant gas is discharged outwards by using an exhaust end pipe, so that excessive consumption of detection consumables of a detection sensor in the detection box is prevented; the detection gas pipe, the gas distribution end seat and the gas outlet table are used for secondary distribution, and gas to be detected is uniformly conveyed into each detection cavity for gas detection, so that the consumption of consumables is reduced.

Description

Technical Field

[0001] The utility model relates to the field of gas detection, in particular to a composite gas detector with a built-in gas distribution structure. Background Art

[0002] Composite gas detector is a device that can detect multiple gases, and the commonly used forms include four-in-one and five-in-one. It can detect a wide range of gases, including but not limited to carbon monoxide (CO), oxygen (O2), sulfur dioxide (SO2), ammonia (NH3), chlorine (Cl2), hydrogen sulfide (H2S), methane, ethane and other alkanes, acetylene, propyne and other alkynes, hydrogen, nitric oxide and other combustible gases, as well as benzene, toluene, formaldehyde and other toxic gases.

[0003] The prior art has the following problems:

[0004] When performing gas detection, since there is only a single channel, the input gas directly acts on the detection sensor. The consumables in the detection sensor are continuously in a state of consumption, which will cause the detection sensor to need to frequently replace the detection consumables, affecting the service life of the equipment. Utility Model Content

[0005] (I) Purpose of the utility model

[0006] In order to solve the technical problems existing in the background technology, the utility model proposes a composite gas detector with a built-in gas distribution structure, which has the characteristics of multi-channel design to assist gas distribution and prevent excessive consumption of detection sensor consumables.

[0007] (II) Technical solution

[0008] In order to solve the above technical problems, the utility model provides a composite gas detector with a built-in gas distribution structure, comprising a detector housing, a touch screen is installed on the front surface of the detector housing, and a plurality of sound and light alarms are installed at the edge;

[0009] The air supply mechanism includes an air inlet valve arranged in the inner cavity of the detector housing, an air pipe is installed at the air inlet end of the air inlet valve, the other end of the air pipe is connected to an air inlet end seat, and an interface pipe end seat is arranged on the air inlet end seat;

[0010] The gas outlet end of the air inlet valve is connected to a three-way gas distribution valve, and the three-way gas distribution valve is equipped with an exhaust end pipe for exhausting gas and a gas supply end pipe for conveying the detection gas;

[0011] The sealing mechanism comprises a detection box opened in the inner cavity of the detector housing, a partition plate for separating independent detection cavities is arranged in the middle of the detection box, and a detachable cover plate is installed on the upper part;

[0012] The composite detection mechanism includes a detection air pipe arranged in the middle of the detection box. The detection air pipe is connected to the exhaust end pipe, and a gas distribution end seat is installed at the output end. The branch of the gas distribution end seat is connected to an air outlet platform penetrating the detection cavity. A detection sensor for detection is arranged on one side of the air outlet platform, and the detection sensor is installed in each detection cavity of the detection box.

[0013] Preferably, the air pipe is a flexible hose structure that can move, and the air pipe is accommodated in the inner cavity of the detector housing.

[0014] Preferably, a filter screen for filtering dust impurities is built into the air inlet end seat.

[0015] Preferably, a convex limit ring is formed on the outer wall of the air inlet end seat, and a clamping groove adapted to the limit ring is opened in the placement groove of the detector housing.

[0016] Preferably, the detection air pipe, the gas distribution end seat, and the air outlet platform are divided into four gas supply channels, which respectively correspond to the detection sensors in the four detection cavities.

[0017] Preferably, a sealing strip is installed on the end face of the cover plate attached to the opening of the detection box.

[0018] The above technical solution of the present invention has the following beneficial technical effects: When performing gas detection, the intake valve and the three-way gas distribution valve perform the first distribution of the gas to be detected; after inputting a sufficient amount of the gas to be detected into the detection box, the supply end pipe channel is cut off, and the exhaust end pipe is used to discharge the excess gas outward to prevent excessive consumption of the detection consumables of the detection sensors in the detection box; the detection air pipe, the gas distribution end seat, and the air outlet platform perform secondary distribution to evenly transport the gas to be detected into each detection cavity for gas detection, reducing the consumption of consumables. Description of the Drawings

[0019] Figure 1 is a schematic structural diagram of the present invention;

[0020] Figure 2 is a schematic structural diagram of the air intake mechanism of the present invention;

[0021] Figure 3 is a schematic structural diagram of the composite detection mechanism of the present invention.

[0022] Reference Signs:

[0023] 1. Detector housing; 2. Touch screen; 3. Sound and light alarm; 41. Inlet terminal seat; 42. Pipe terminal seat; 43. Air pipe; 44. Inlet valve; 45. Three-way air distribution valve; 46. Exhaust terminal pipe; 47. Air supply terminal pipe; 51. Detection box; 52. Partition plate; 53. Cover plate; 61. Detection air pipe; 62. Air distribution terminal seat; 63. Air outlet platform; 7. Limit ring. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model is further described in detail below in combination with specific implementation methods and with reference to the accompanying drawings. It should be understood that these descriptions are only exemplary and are not intended to limit the scope of the utility model. In addition, in the following description, the description of well-known structures and technologies is omitted to avoid unnecessary confusion of the concept of the utility model.

[0025] like Figures 1-3 As shown, the utility model proposes a composite gas detector with a built-in gas distribution structure, comprising a detector housing 1, a touch screen 2 is installed on the front surface of the detector housing 1, and a plurality of sound and light alarms 3 are installed at the edge;

[0026] The air supply mechanism includes an air inlet valve 44 disposed in the inner cavity of the detector housing 1, an air pipe 43 is installed at the air inlet end of the air inlet valve 44, the other end of the air pipe 43 is connected to an air inlet end seat 41, and an interface pipe end seat 42 is provided on the air inlet end seat 41;

[0027] The outlet end of the air inlet valve 44 is connected to a three-way air distribution valve 45, and the three-way air distribution valve 45 is equipped with an exhaust end pipe 46 for exhausting gas and a supply end pipe 47 for conveying the detection gas;

[0028] The sealing mechanism includes a detection box 51 opened in the inner cavity of the detector housing 1, a partition plate 52 for separating independent detection cavities is arranged in the middle of the detection box 51, and a detachable cover plate 53 is installed on the upper part;

[0029] The composite detection mechanism includes a detection air pipe 61 arranged in the middle of the detection box 51, the detection air pipe 61 is connected to the exhaust end pipe 46, and a gas distribution terminal seat 62 is installed at the output end, and a branch of the gas distribution terminal seat 62 is connected to a gas outlet platform 63 that penetrates the detection cavity. A detection sensor 64 for detection is arranged on one side of the gas outlet platform 63, and the detection sensor 64 is installed in each detection cavity of the detection box 51.

[0030] It should be noted that the detection air pipe 61, the air distribution end seat 62 and the air outlet platform 63 are divided into four groups of air supply channels, which respectively correspond to the detection sensors 64 in the four detection cavities.

[0031] In this embodiment, when performing gas detection, the intake valve 44 sucks in the external gas to be detected through the intake end seat 41 connected by the air pipe 43, and the first distribution of the gas to be detected is carried out through the three-way gas distribution valve 45;

[0032] After sufficient gas to be detected is input into the detection box 51 through the gas supply end pipe 47, the channel of the gas supply end pipe 47 is cut off, and the excess gas is discharged outward using the exhaust end pipe 46 to prevent excessive consumption of the detection sensor 64 detection consumables in the detection box 51;

[0033] The detection air pipe 61 performs secondary distribution of the gas to be detected input by the gas supply end pipe 47 through the gas distribution end seat 62, and evenly transports the gas to be detected to each detection cavity separated by the partition plate 52, and gas detection is carried out through the detection sensor 64 corresponding to the gas type.

[0034] Among them, the detection sensor 64 includes a carbon monoxide detection sensor, an oxygen detection sensor, a sulfur dioxide detection sensor, an ammonia detection sensor, etc., and the corresponding detection sensor can be selected according to the use environment.

[0035] To facilitate the movement of the intake end seat 41, further, the air pipe 43 is a flexible hose structure that can move, and the air pipe 43 is housed in the inner cavity of the detector housing 1.

[0036] To pre-treat the gas to be detected, further, the intake end seat 41 is internally provided with a filter screen for filtering dust impurities to prevent particulate matter from blocking the intake channel.

[0037] To stably fix the intake end seat 41 on the detector housing 1, a raised limit ring 7 is formed on the outer wall of the intake end seat 41, and a card slot adapted to the limit ring 7 is provided in the placement groove of the detector housing 1.

[0038] To assist in the sealing performance of the detection box 51 when it is closed, further, a sealing strip is installed on the end face of the cover plate 53 attached to the opening of the detection box 51.

[0039] It should be understood that the above specific embodiments of the present invention are only used for exemplary illustration or explanation of the principle of the present invention, and do not constitute a limitation to the present invention. Therefore, any modifications, equivalent replacements, improvements, etc. made without departing from the spirit and scope of the present invention shall be included within the protection scope of the present invention. In addition, the appended claims of the present invention are intended to cover all changes and modifications falling within the scope and boundaries of the appended claims, or equivalent forms of such scope and boundaries.

Claims

1. A composite gas detector with a built-in gas distribution structure, characterized in that: It comprises a detector housing (1), a touch screen (2) being installed on the front surface of the detector housing (1), and a plurality of sound and light alarms (3) being installed on the edge; The air supply mechanism comprises an air inlet valve (44) arranged in the inner cavity of the detector housing (1); an air pipe (43) is installed at the air inlet end of the air inlet valve (44); the other end of the air pipe (43) is connected to an air inlet end seat (41); and an end seat (42) for opening an interface is arranged on the air inlet end seat (41); The gas outlet end of the gas inlet valve (44) is connected to a three-way gas distribution valve (45), and the three-way gas distribution valve (45) is equipped with an exhaust end pipe (46) for exhausting gas and a gas supply end pipe (47) for conveying detection gas; The sealing mechanism comprises a detection box (51) opened in the inner cavity of the detection instrument housing (1), a partition plate (52) for separating independent detection cavities is arranged in the middle of the detection box (51), and a detachable cover plate (53) is installed on the upper part; The composite detection mechanism comprises a detection air pipe (61) arranged in the middle of the detection box (51), the detection air pipe (61) is connected to the exhaust end pipe (46), and a gas distribution end seat (62) is installed at the output end, a branch of the gas distribution end seat (62) is connected to a gas outlet platform (63) penetrating into the detection cavity, a detection sensor (64) for detection is arranged on one side of the gas outlet platform (63), and the detection sensor (64) is installed in each detection cavity of the detection box (51).

2. A composite gas detector with a built-in gas distribution structure according to claim 1, characterized in that: The air pipe (43) is a movable hose structure, and the air pipe (43) is received in the inner cavity of the detector housing (1).

3. A composite gas detector with a built-in gas distribution structure according to claim 1, characterized in that: The air inlet end seat (41) has a built-in filter screen for filtering dust and impurities.

4. A composite gas detector with a built-in gas distribution structure according to claim 1, characterized in that: The outer wall of the air inlet end seat (41) is formed with a raised limiting ring (7), and the placement groove of the detector housing (1) is provided with a clamping groove adapted to the limiting ring (7).

5. The composite gas detector with a built-in gas distribution structure according to claim 1, characterized in that: The detection air pipe (61), the air distribution end seat (62) and the air outlet platform (63) are divided into four groups of air supply channels, which respectively correspond to the detection sensors (64) in the four detection cavities.

6. A composite gas detector with a built-in gas distribution structure according to claim 1, characterized in that: A sealing strip is installed on the end surface of the cover plate (53) attached to the opening of the detection box (51).

Images