Device capable of simultaneously sampling and analyzing gas

Abstract

The utility model relates to the field of gas collection and detection, in particular to a device capable of simultaneously sampling and analyzing gas, which comprises a support plate, the device further comprises a heat insulation piece, a heating assembly and a heat dissipation assembly. The upper end of the supporting plate is fixedly connected with a plurality of heat insulation pieces, a heating assembly is arranged between every two adjacent heat insulation pieces, and a heat dissipation assembly is arranged at the lower end of the supporting plate. The device is composed of two groups of adsorption pipes and heating blocks with the same number and heating rods and temperature sensors with the corresponding number, only the heating blocks corresponding to the adsorption pipes are needed for heating during analysis, no motion assembly is needed, the compact structure and the stability are guaranteed, and the analysis efficiency is improved. When one group of adsorption tubes are used for analyzing, the other group of adsorption tubes can be connected with the analyzing two-position three-way valve and the sampling two-position three-way valve through the gating valve and the two-position six-way valve for synchronously collecting, so that the problem that the same device cannot be used for sampling and analyzing at the same time is solved, and completely independent operation of collecting and analyzing gas samples is realized; and meanwhile, the compactness of the structure is ensured, and the efficient work of sampling and analysis is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of gas collection and detection, more particularly to a device for simultaneous sampling and analyzing of gas BACKGROUND

[0002] The gas sampling and analyzing device is a device for collecting gas samples into adsorption tubes and then heating and analyzing them. Its core function is to detect different substances in the gas by precisely controlling the collection and heating process of the gas, in order to monitor the composition of the gas.

[0003] In order to overcome the problem that the existing gas sampling and analyzing device is usually composed of multiple adsorption tubes and a heating block, the adsorption tubes and the heating block are each controlled by a set of motion components, and when analyzing, the adsorption tubes are transported to the designated position by the adsorption tube motion components, while the heating block is transported to the adsorption tube position by the heating block motion components to heat and analyze it. This device requires a large number of moving parts and occupies a large space, which results in poor overall structural stability and lack of compactness, making it impossible to work portably. At the same time, since multiple adsorption tubes are placed on the same sample disc, when one adsorption tube is analyzed, the remaining adsorption tubes cannot collect gas samples.

[0004] Therefore, a device for simultaneous sampling and analyzing of gas is proposed, which is divided into two groups, each consisting of multiple adsorption tubes, a heating block, and a corresponding number of heating rods, a large-volume heat sink, and a temperature sensor. When analyzing, only the heating block corresponding to the adsorption tube needs to be heated, without any motion components. After heating is completed, the large-volume heat sink ensures that the adsorption tube quickly cools to room temperature, ensuring the compactness and stability of the structure. This solves the problem of the need for complex motion mechanisms during sampling and analysis, the large volume, and the lack of stability. The common end of the multi-position valve is connected to the two-position six-way valve, the selection end is connected to the sampling tube, the remaining interfaces of the two-position six-way valve are respectively connected to the normally open port of the sampling two-position three-way valve and the emptying two-position three-way valve, and the normally closed port of the analyzing two-position three-way valve, which can realize simultaneous sampling and analyzing, and improve the efficiency of sampling and analyzing. SUMMARY

[0005] In order to overcome the existing gas sampling and resolving device is usually composed of a plurality of adsorption tube and a heating block, the adsorption tube and the heating block are controlled by a set of movement components respectively, the adsorption tube is transported to the specified position by the adsorption tube movement component during resolving, and the heating block is transported to the position of the adsorption tube by the heating block movement component to heat and resolve, the device needs a large number of movement parts and occupies a large space, which causes poor overall structural stability and is not compact, and the device cannot be used conveniently, and since a plurality of adsorption tubes are placed on the same sample disc, when one adsorption tube is resolved, the remaining adsorption tubes cannot collect gas samples, therefore, the device for simultaneously sampling and resolving gas is provided.

[0006] The technical scheme of the utility model discloses: a device that sampling and resolving gas can be carried out simultaneously, including support plate, still including heat insulation spare, heating assembly and heat dissipation assembly, the plurality of heat insulation spare is fixedly connected on support plate upper end, heating assembly is set up between adjacent two heat insulation spare, the heat dissipation assembly is set up to support plate lower extreme, heating assembly includes heating block, fixed hole, heating rod, temperature sensor, first slot and adsorption tube, heating block is slidably arranged between adjacent two heat insulation spare, and the fixed hole is opened in the front end of heating block, and the heating rod is installed on the inner wall of fixed hole, and the temperature sensor is fixedly connected to the front end of heating rod, and the first slot is opened in the front end edge of heating block.

[0007] Preferably, by setting two groups of a plurality of adsorption tubes, heating blocks and corresponding number of heating rods, independent heating of the plurality of adsorption tubes can be realized, the problems of complex movement mechanism, large volume and instability during sampling and resolving are solved, by setting the temperature sensor, the experimental temperature can be accurately controlled, the uniformity of temperature is avoided to affect the accuracy of experimental results, by opening the first slot, the adsorption tube can be clamped and fixed, the stability of the whole device is ensured, by opening the second slot and the third slot at the left and right ends of the heating block, the heat dissipation effect of the heating block can be improved, by setting the large air volume fan at the lower end of the support plate, the adsorption tube after heating can be reduced to normal temperature in a very short time.

[0008] As preferred, the plurality of heat insulation spare is linearly distributed on the upper end of the support plate, the left and right ends of the heating block are in close contact with the heat insulation spare, the adsorption tube is slidably installed in the inner wall of the first slot, and the front face of the first slot is U-shaped.

[0009] As preferred, the heating assembly further comprises a second slot and a third slot; a plurality of second slots are opened in the left end of the heating block, and the plurality of second slots are linearly distributed on the left end of the heating block; a plurality of second slots and a third slot are opened in the right end of the heating block.

[0010] As preferred, the heat dissipation assembly comprises a fan frame, a fan opening, a large-volume fan, a fourth groove, a fixing column and a screw hole; the upper end of the fan frame is provided with the fan opening, the inner wall of the fan opening is provided with the large-volume fan, the four corners of the fan frame are provided with the fourth groove, the inner wall top end of the fourth groove is fixedly connected with the fixing column, and the upper end of the fan frame is provided with the screw hole.

[0011] As preferred, the valve body assembly comprises a first sampling two-position three-way valve, a first multi-position selection valve, a second multi-position selection valve, a first analysis two-position three-way valve, a second analysis two-position three-way valve, a carrier gas mass flow controller, a third multi-position selection valve, a fourth multi-position selection valve, a first two-position six-way valve, a second two-position six-way valve, a sampling vacuum pump, a sampling mass flow controller, a second sampling two-position three-way valve, a sampling tube and an analysis channel selection valve; the gas inlet and outlet ends of a first group of sampling tubes are connected with the first multi-position selection valve and the second multi-position selection valve respectively, the gas inlet and outlet ends of another group of sampling tubes are connected with the third multi-position selection valve and the fourth multi-position selection valve respectively, the sampling tube is provided with the first sampling two-position three-way valve at the sampling position, the first sampling two-position three-way valve is connected with the second two-position six-way valve, the second two-position six-way valve is connected with the first analysis two-position three-way valve, the gas outlet end of the first analysis two-position three-way valve is provided with the analysis channel selection valve, the sampling tube is provided with the carrier gas mass flow controller at the carrier gas position, the carrier gas mass flow controller is provided with the second analysis two-position three-way valve at the gas outlet end, the gas outlet end of the fourth multi-position selection valve is provided with the first two-position six-way valve, the gas outlet end of the first two-position six-way valve is provided with the second sampling two-position three-way valve, the gas outlet end of the second sampling two-position three-way valve is provided with the sampling mass flow controller, and the gas outlet end of the sampling mass flow controller is provided with the sampling vacuum pump.

[0012] The utility model discloses a beneficial effect: through being provided with a plurality of adsorption tube, heating block and corresponding quantity's heating rod, can realize to the independent heating of a plurality of adsorption tube, solved the problem that a plurality of adsorption tube analysis needs complex movement part and cannot convenient analysis, through being provided with temperature sensor, can accurate control experiment temperature, avoid the inhomogeneity of temperature influence experiment result's accuracy, through being provided with first groove, can clamp fixed adsorption tube, guaranteed the stability of whole device, the public end of multi -way valve is connected with two -position six -way valve, and the selection end is connected with sampling tube, and each sampling tube can be heated individually, and the selection end interface of two multi -way valves of each group corresponds to connect the both ends of sampling tube, and the remaining interface of two -position six -way valve is connected with the normally open port of sampling two -position three -way valve and emptying two -position three -way valve respectively and the normally closed port of analysis two -position three -way valve, and another group of multi -way valve connects the interface of two -position six -way valve and two -position three -way valve and is connected with first group contrary, in addition sampling flow and analysis flow realize the accurate control of flow through the mass flow controller on the pipeline. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1The utility model discloses a kind of gas sampling and analysis simultaneously carried out device's stereoscopic structure schematic diagram of structure shown.

[0014] Figure 2 The utility model discloses a kind of gas sampling and analysis simultaneously carried out device's heating block's stereoscopic structure schematic diagram of structure shown.

[0015] Figure 3 The utility model discloses a kind of gas sampling and analysis simultaneously carried out device's heat dissipation subassembly's stereoscopic structure schematic diagram of structure shown.

[0016] Figure 4 The utility model discloses a kind of gas sampling and analysis simultaneously carried out device's valve body subassembly's plane view.

[0017] The mark in drawing is: 1, support plate;2, heat insulating part;101, heating block;102, fixed hole;103, heating rod;104, temperature sensor;105, first slot;106, adsorption pipe;107, second slot;108, third slot;201, fan frame;202, fan mouth;203, large air volume fan;204, fourth slot;205, fixed column;206, screw hole;301, first sampling two-position three-way valve;302, first multi-position selection valve;303, second multi-position selection valve;304, first analysis two-position three-way valve;305, second analysis two-position three-way valve;306, carrier gas mass flow controller;307, third multi-position selection valve;308, fourth multi-position selection valve;309, first two-position six-way valve;310, second two-position six-way valve;311, sampling vacuum pump;312, sampling mass flow controller;313, second sampling two-position three-way valve;314, sampling pipe;315, analysis channel selection valve. DETAILED DESCRIPTION

[0018] The utility model is further explained below in connection with drawing and embodiment.

[0019] Please refer to Figures 1-4The utility model provides an embodiment: a device that sampling and analysis of gas can carry out simultaneously, including support plate 1, still including heat insulation spare 2, heating assembly and heat dissipation assembly, a plurality of heat insulation spare 2 are fixedly connected on support plate 1 upper end, heating assembly is arranged between adjacent two heat insulation spare 2, support plate 1 lower end is provided with heat dissipation assembly, heating assembly includes heating block 101, fixed hole 102, heating rod 103, temperature sensor 104, first slot 105 and adsorption tube 106, heating block 101 is slidably arranged between adjacent two heat insulation spare 2, fixed hole 102 is passed through and seted up in heating block 101 front end, heating rod 103 is installed in fixed hole 102 inner wall, temperature sensor 104 is fixedly connected in heating rod 103 front end, first slot 105 is passed through and seted up in heating block 101 front end edge, through being provided with a plurality of adsorption tube 106, heating block 101 and corresponding number of heating rod 103, can realize the independent heating of a plurality of adsorption tube 106, solved the problem that the complicated motion mechanism body is needed when sampling and analysis, the accumulation is more bulky, and is not enough stable, through being provided with temperature sensor 104, can accurate control experimental temperature, avoid the inhomogeneity of temperature to influence the accuracy of experimental result.

[0020] Please refer to Figure 1 And Figure 2 In the embodiment, a plurality of heat insulation spare 2 linear distribution is in support plate 1 upper end, heating block 101 left and right two ends and heat insulation spare 2 are inlaid, and adsorption tube 106 is slidably installed in first slot 105 inner wall, and the first slot 105 front surface is U type, by sliding the adsorption tube 106 and placing in the first slot 105, can adsorption tube 106 clamping fixed, guarantee the stability when adsorption tube 106 analysis.

[0021] Please refer to Figure 2 In the embodiment, heating assembly still includes second slot 107 and third slot 108, a plurality of second slot 107 are seted up in heating block 101 left end, a plurality of second slot 107 and third slot 108 are seted up in heating block 101 right end, by setting up second slot 107 and third slot 108 in heating block 101 left and right two ends, can improve the heat dissipation effect of heating block 101.

[0022] Please refer to Figure 3In the embodiment, the heat dissipation assembly comprises a fan frame 201, a fan opening 202, a large-volume fan 203, a fourth groove body 204, a fixed column 205 and a threaded hole 206. The fan opening 202 is formed through the upper end of the fan frame 201, and the large-volume fan 203 is mounted on the inner wall of the fan opening 202. The fourth groove body 204 is formed at the four corners of the fan frame 201, and the fixed column 205 is fixedly connected to the top inner wall of the fourth groove body 204. The threaded hole 206 is formed through the upper end of the fan frame 201. The large-volume fan 203 is arranged at the lower end of the support plate 1, so that the adsorption pipe 106 heated can be cooled to room temperature in a short time. The fan frame 201 is fixed to the lower end of the support plate 1 through the threaded hole 206.

[0023] Please refer to Figure 4 In the embodiment, the valve body assembly comprises a first sampling two-position three-way valve 301, a first multi-position selection valve 302, a second multi-position selection valve 303, a first analysis two-position three-way valve 304, a second analysis two-position three-way valve 305, a carrier gas mass flow controller 306, a third multi-position selection valve 307, a fourth multi-position selection valve 308, a first two-position six-way valve 309, a second two-position six-way valve 310, a sampling vacuum pump 311, a sampling mass flow controller 312, a second sampling two-position three-way valve 313, a sampling pipe 314 and an analysis channel selection valve 315. The first group of sampling pipes 314 are connected to the first multi-position selection valve 302 and the second multi-position selection valve 303 at the gas inlet and outlet ends, respectively. The other group of sampling pipes 314 are connected to the third multi-position selection valve 307 and the fourth multi-position selection valve 308 at the gas inlet and outlet ends, respectively. The first sampling two-position three-way valve 301 is arranged at the sampling position of the sampling pipe 314. The first sampling two-position three-way valve 301 is connected to the second two-position six-way valve 310. The second two-position six-way valve 310 is connected to the first analysis two-position three-way valve 304. The analysis channel selection valve 315 is arranged at the gas outlet end of the first analysis two-position three-way valve 304. The carrier gas mass flow controller 306 is arranged at the carrier gas position of the sampling pipe 314. The carrier gas mass flow controller 306 is provided with the second analysis two-position three-way valve 305 at the gas outlet end. The first two-position six-way valve 309 is arranged at the gas outlet end of the fourth multi-position selection valve 308. The second sampling two-position three-way valve 313 is arranged at the gas outlet end of the first two-position six-way valve 309. The sampling mass flow controller 312 is arranged at the gas outlet end of the second sampling two-position three-way valve 313. The sampling mass flow controller 312 is provided with the sampling vacuum pump 311 at the gas outlet end. The above-mentioned structure realizes the independent operation of gas sample collection and analysis, and improves the efficient work of sampling and analysis.

[0024] In use, first, the heating rod 103 is placed in the fixed hole 102, and then a plurality of heating blocks 101 are installed between two adjacent heat insulation members 2, so as to ensure the compactness and stability of the structure. Then, the fan frame 201 is fixed to the lower end of the support plate 1 through bolts.

[0025] The carrier gas controls the carrier gas flow through the carrier gas mass flow controller 306, enters the third multi-position selection valve 307 through the interface of the second analytical two-position three-way valve 305 and the first two-position six-way valve 309, and then the third multi-position selection valve 307 is connected with one end of the sampling tube 314, the other end of the sampling tube 314 is connected with the interface of the fourth multi-position selection valve 308, and the fourth multi-position selection valve 308 is further connected with the interface of the first two-position six-way valve 309, the interface of the first two-position six-way valve 309 is communicated with the first analytical two-position three-way valve 304, at this time, the sample after analysis is carried by the carrier gas through the analytical channel selection valve 315 into the analysis instrument for analysis, realizing the completely independent operation of the gas sample collection and analysis, and improving the efficient work of sampling and analysis;

[0026] During the experiment, each adsorption tube 106 is placed in the first groove body 105 of the corresponding heating block 101, the problem that a complex motion mechanism is bulky and unstable during sampling and analysis is solved, then the heating rod 103 is powered to heat, the heating block 101 is driven to heat, the heating block 101 transmits the temperature to the adsorption tube 106, and the temperature sensor 104 detects the actual temperature in real time, after a group of adsorption tubes 106 are analyzed, the high-wind fan 203 is started to cool the heating block 101, and the temperature is quickly reduced to the set temperature to wait for the next sample collection.

[0027] The embodiments of the utility model are described in detail above combined with the drawings, but the utility model is not limited to the above-mentioned embodiments, and various changes can be made within the knowledge range possessed by the person skilled in the art without departing from the purpose of the utility model.

Claims

1. A device for simultaneous sampling and analysis of a gas, comprising a support plate (1), characterised in that: It also includes heat insulation (2), heating assembly and heat dissipation assembly; support plate (1) upper end fixed with a plurality of heat insulation (2), between adjacent two heat insulation (2) is provided with heating assembly, support plate (1) lower end is provided with heat dissipation assembly, heating assembly includes heating block (101), fixed hole (102), heating rod (103), temperature sensor (104), first slot (105) and adsorption tube (106); between adjacent two heat insulation (2) is provided with heating block (101), heating block (101) front end is provided with fixed hole (102), fixed hole (102) inner wall is installed with heating rod (103), heating rod (103) front end is fixed with temperature sensor (104), heating block (101) front end edge is provided with first slot (105).

2. A device for simultaneous sampling and analysis of a gas according to claim 1, characterized in that: A plurality of heat insulation (2) linear distribution on the upper end of support plate (1).

3. The apparatus for simultaneous sampling and analysis of a gas according to claim 1, wherein: The left and right ends of the heating block (101) are in close contact with the heat insulation (2).

4. The apparatus of claim 1, wherein: The first slot (105) is provided with an adsorption tube (106) on the inner wall.

5. The apparatus of claim 1, wherein: The heating assembly further comprises a second slot (107) and a third slot (108); a plurality of second slots (107) are formed in the left end of the heating block (101), and the plurality of second slots (107) are linearly distributed on the left end of the heating block (101); a plurality of second slots (107) and a third slot (108) are formed in the right end of the heating block (101).

6. The apparatus for simultaneous sampling and analysis of a gas according to claim 1, wherein: The heat dissipation assembly comprises a fan frame (201), a fan port (202), a large air volume fan (203), a fourth slot (204), a fixed column (205) and a screw hole (206); the fan port (202) is formed in the upper end of the fan frame (201), the large air volume fan (203) is installed on the inner wall of the fan port (202), the fourth slot (204) is formed at the corner of the fan frame (201), the fixed column (205) is fixedly connected to the inner wall top of the fourth slot (204), and the screw hole (206) is formed in the upper end of the fan frame (201).

7. The apparatus of claim 1, wherein: The valve body assembly comprises a first sampling two-position three-way valve (301), a first multi-position selection valve (302), a second multi-position selection valve (303), a first analysis two-position three-way valve (304), a second analysis two-position three-way valve (305), a carrier gas mass flow controller (306), a third multi-position selection valve (307), a fourth multi-position selection valve (308), a first two-position six-way valve (309), a second two-position six-way valve (310), a sampling vacuum pump (311), a sampling mass flow controller (312), a second sampling two-position three-way valve (313), a sampling tube (314), and an analysis channel selection valve (315); one end of the sampling tube (314) is connected with the first multi-position selection valve (302), and the other end is connected with the second multi-position selection valve (303); one end of another sampling tube (314) is connected with the third multi-position selection valve (307), and the other end is connected with the fourth multi-position selection valve (308); the sampling tube (314) is provided with the first sampling two-position three-way valve (301) at the sampling position; the first sampling two-position three-way valve (301) is connected with the second two-position six-way valve (310); the second two-position six-way valve (310) is connected with the first analysis two-position three-way valve (304); the first analysis two-position three-way valve (304) is provided with the analysis channel selection valve (315) at the gas outlet end; the sampling tube (314) is provided with the carrier gas mass flow controller (306) at the carrier gas position; the carrier gas mass flow controller (306) is provided with the second analysis two-position three-way valve (305) at the gas outlet end; the fourth multi-position selection valve (308) is provided with the first two-position six-way valve (309) at the gas outlet end; the first two-position six-way valve (309) is provided with the second sampling two-position three-way valve (313) at the gas outlet end; the second sampling two-position three-way valve (313) is provided with the sampling mass flow controller (312) at the gas outlet end; and the sampling mass flow controller (312) is provided with the sampling vacuum pump (311) at the gas outlet end.

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