A gas detection device

Abstract

A gas detection device comprises a detector, wherein the middle part of one side of the detector is connected to a gas inlet pipe, a gas valve and a gas flow meter are arranged on the gas inlet pipe, an igniter is arranged at the connection between the gas inlet pipe and the detector, the top of the detector is connected to an oxygen inlet pipe, an oxygen valve and an oxygen flow meter are arranged on the oxygen inlet pipe, and the other side of the detector is connected to an oxygen content detection system. In the utility model, a specified amount of gas is introduced into a specified amount of oxygen for full combustion, and the oxygen consumption of the specified amount of gas can be accurately calculated by the change of the oxygen amount before and after.

Description

Technical Field

[0001] The utility model belongs to the field of gas detection, in particular to a gas detection device. Background Art

[0002] Gas is one of the most commonly used energy sources in our daily work and life, so there are strict requirements for the performance of gas, including the specific heat capacity of gas. At present, one of the data that must be tested when testing the specific heat capacity of gas is the oxygen consumption. At present, most of the oxygen consumption tests are determined by estimation, which leads to certain errors in the results, and ultimately affects the accuracy of the specific heat capacity test of gas. Utility Model Content

[0003] The utility model provides a gas detection device to solve the defects in the prior art.

[0004] The utility model is realized through the following technical solutions:

[0005] A gas detection device comprises a detector, wherein the middle part of one side of the detector is connected to a gas inlet pipe, a gas valve and a gas flow meter are arranged on the gas inlet pipe, an igniter is arranged at the connection point between the gas inlet pipe and the detector, the top of the detector is connected to an oxygen inlet pipe, an oxygen valve and an oxygen flow meter are arranged on the oxygen inlet pipe, and the other side of the detector is connected to an oxygen content detection system.

[0006] A gas detection device as described above, the oxygen content detection system includes several connecting pipes, the detector is connected with one end of the several connecting pipes from top to bottom, a sampling valve is arranged on the connecting pipe, the other end of all the connecting pipes is connected with one end of a vertical pipe, the middle part of the other end of the vertical pipe is connected with the sampling port of the oxygen content detector through a pipeline, and a detection air pump is arranged on the connecting pipeline between the vertical pipe and the oxygen content detector.

[0007] In the above-mentioned gas detection device, the top of the detector is connected to the nitrogen pipe, a nitrogen valve is arranged on the nitrogen pipe, and the bottom of the detector is connected to the gas outlet pipe, a gas outlet valve and a gas outlet pump are arranged on the gas outlet pipe.

[0008] The utility model has the advantages that in the utility model, a specified amount of fuel gas is introduced into a specified amount of oxygen for full combustion, and the oxygen consumption of the specified amount of fuel gas can be accurately calculated through the change of oxygen amount before and after. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0010] Figure 1 It is a schematic diagram of the structure of the utility model.

[0011] Figure numerals: 1. detector; 2. gas inlet pipe; 3. gas valve; 4. gas flow meter; 5. igniter; 6. oxygen inlet pipe; 7. oxygen valve; 8. oxygen flow meter; 9. connecting pipe; 10. sampling valve; 11. vertical pipe; 12. oxygen content detector; 13. detection air pump; 14. nitrogen pipe; 15. nitrogen valve; 16. outlet pipe; 17. outlet valve; 18. outlet pump. DETAILED DESCRIPTION

[0012] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0013] A gas detection device comprises a detector 1, wherein the middle part of one side of the detector 1 is connected with a gas inlet pipe 2, a gas valve 3 and a gas flow meter 4 are arranged on the gas inlet pipe 2, an igniter 5 is arranged at the connection point between the gas inlet pipe 2 and the detector 1, the top of the detector 1 is connected with an oxygen inlet pipe 6, an oxygen valve 7 and an oxygen flow meter 8 are arranged on the oxygen inlet pipe 6, and the other side of the detector 1 is connected with an oxygen content detection system. The utility model introduces oxygen into the detector 1 by opening the oxygen valve 7 on the oxygen introduction pipe 6. The detector 1 does not contain oxygen before the oxygen is introduced. The amount of added oxygen can be accurately known by the oxygen flowmeter 8. At the same time, the oxygen content detection system can be used to check the oxygen concentration in the detector 1 after the oxygen introduction is completed and the oxygen valve 7 is closed. Then the amount of added oxygen is calculated according to the volume of the detector 1, and then the amount of added oxygen is checked with the oxygen flowmeter 8 or the amount of added oxygen, so as to ensure the accuracy of the initial oxygen content. Then the gas valve 3 on the gas inlet pipe 2 is opened to introduce gas, and the gas is ignited by the igniter. At the same time, the gas flowmeter 4 records the gas consumption in real time. When the gas is consumed to a specified amount, the gas valve 3 is closed. After the gas is completely consumed, the oxygen concentration after combustion is detected by the oxygen content detection system. Then the amount of oxygen is calculated according to the volume of the detector 1, so that the accurate oxygen consumption after the specified amount of gas is fully burned can be conveniently known. In order to ensure full combustion, the amount of oxygen is more than three times the amount of gas.

[0014] Specifically, the oxygen content detection system described in this embodiment includes several connecting pipes 9, the detector 1 is connected to one end of several connecting pipes 9 from top to bottom, a sampling valve 10 is arranged on the connecting pipe 9, the other end of all the connecting pipes 9 is connected to one end of a vertical pipe 11, the middle of the other end of the vertical pipe 11 is connected to the sampling port of the oxygen content detector 12 through a pipeline, and a detection air pump 13 is arranged on the connecting pipeline between the vertical pipe 11 and the oxygen content detector 12. In the utility model, several connecting pipes 9 are connected to positions at different heights in the detector 1, so that the gas at different positions in the detector 1 can be obtained for mixed detection, thereby ensuring the accuracy of the detection result.

[0015] Specifically, the top of the detector 1 described in this embodiment is connected to the nitrogen pipe 14, and the nitrogen valve 15 is arranged on the nitrogen pipe 14. The bottom of the detector 1 is connected to the outlet pipe 16, and the outlet pipe 16 is provided with an outlet valve 17 and an outlet pump 18. After one detection is completed, the utility model first opens the outlet valve 17 and the outlet pump 18 to extract the gas in the detector 1, and then opens the nitrogen valve 15 to pass a certain amount of nitrogen to ensure that all oxygen is discharged, thereby ensuring the accuracy of the next detection.

[0016] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the utility model.

Claims

1. A gas detection device, characterized in that: The invention comprises a detector (1), wherein the middle part of one side of the detector (1) is connected to a gas inlet pipe (2), a gas valve (3) and a gas flow meter (4) are arranged on the gas inlet pipe (2), an igniter (5) is arranged at the connection point between the gas inlet pipe (2) and the detector (1), the top of the detector (1) is connected to an oxygen inlet pipe (6), an oxygen valve (7) and an oxygen flow meter (8) are arranged on the oxygen inlet pipe (6), and the other side of the detector (1) is connected to an oxygen content detection system.

2. A gas detection device according to claim 1, characterized in that: The oxygen content detection system comprises a plurality of connecting pipes (9), the detector (1) is connected with one end of the plurality of connecting pipes (9) from top to bottom, a sampling valve (10) is arranged on the connecting pipe (9), the other end of all the connecting pipes (9) is connected with one end of a vertical pipe (11), the middle part of the other end of the vertical pipe (11) is connected with a sampling port of an oxygen content detector (12) through a pipeline, and a detection air pump (13) is arranged on the connecting pipeline between the vertical pipe (11) and the oxygen content detector (12).

3. A gas detection device according to claim 1, characterized in that: The top of the detector (1) is connected to a nitrogen pipe (14), on which a nitrogen valve (15) is arranged; the bottom of the detector (1) is connected to an air outlet pipe (16), on which an air outlet valve (17) and an air outlet pump (18) are arranged.

Images