Working gas source supply device for total hydrocarbon analyzer of air separation system

Abstract

The utility model relates to the technical field of chemical production detection equipment, and discloses an air separation system total hydrocarbon analyzer working gas source supply device which comprises a nitrogen source, a nitrogen conveying pipeline, a hydrogen source, a hydrogen conveying pipeline, a compressed air source and an air conveying pipeline. The air conveying pipeline is further provided with an air conveying bypass, the combustion-supporting gas inlet is communicated with the air conveying pipeline gas outlet or the air conveying bypass gas outlet, the hydrogen conveying pipeline is further provided with a hydrogen conveying bypass, and the combustion gas inlet is communicated with the hydrogen conveying pipeline gas outlet or the hydrogen conveying bypass gas outlet. The hydrogen conveying pipeline and the hydrogen conveying bypass as well as the air conveying pipeline and the air conveying bypass are mutually main and standby, and when the gas supply amount of one path is insufficient or a fault occurs, switching can be carried out in an undisturbed mode so as to ensure that gas is continuously and stably supplied to the total hydrocarbon analyzer, and stable and safe operation of the air separation system is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of chemical production detection equipment, and particularly relates to a working gas source providing device for a total hydrocarbon analyzer of an air separation system. Background Art

[0002] The total hydrocarbon analyzer of the air separation system is used to measure the concentration of hydrocarbons in the liquid oxygen evaporator and the condensing evaporator, prevent the explosion of the liquid oxygen evaporator and the condensing evaporator caused by excessive hydrocarbons, and cause major accidents in the air separation system. When the total hydrocarbon analyzer of the air separation system works normally, 30% H2+N2 is used as the combustion gas, and compressed air is used as the combustion-supporting gas. In the prior art, the working gas source used when the total hydrocarbon analyzer works is supplied by an external standard gas cylinder. Since the capacity of the bottled gas is limited, the gas cylinder needs to be frequently replaced during use. When replacing the gas cylinder, the analyzer must be offline, and it also takes a certain time to debug after the replacement is completed before the monitoring can be restored. During the gas cylinder replacement and debugging period, the total hydrocarbon analyzer is in an offline state, and it is impossible to continuously detect the total hydrocarbon content of the liquid oxygen during the operation of the air separation system. The operation of the air separation system is out of control, and its safe operation cannot be ensured. Summary of the Utility Model

[0003] To overcome the problems existing in the related art, the utility model provides a working gas source providing device for a total hydrocarbon analyzer of an air separation system, which has a hydrogen delivery pipeline and a hydrogen delivery bypass, and an air delivery pipeline and an air delivery bypass that are mutually primary and standby. When the gas supply of one of the paths is insufficient or a failure occurs, the switching can be carried out without interference to ensure continuous and stable gas supply to the total hydrocarbon analyzer, and the stable and safe operation of the air separation system is guaranteed.

[0004] The technical solution adopted by the utility model is as follows: A working gas source providing device for a total hydrocarbon analyzer of an air separation system includes a nitrogen source, a nitrogen delivery pipeline, a hydrogen source, a hydrogen delivery pipeline, a compressed air source and an air delivery pipeline. The nitrogen source is communicated with the air inlet of the nitrogen delivery pipeline, the hydrogen source is communicated with the air inlet of the hydrogen delivery pipeline, and the compressed air source is communicated with the air inlet of the air delivery pipeline;

[0005] The working gas source inlet of the total hydrocarbon analyzer includes a combustion-supporting gas inlet and a combustion gas inlet. An air delivery bypass is further arranged on the air delivery pipeline, and the combustion-supporting gas inlet is communicated with the air outlet of the air delivery pipeline or the air outlet of the air delivery bypass;

[0006] A hydrogen delivery bypass is further arranged on the hydrogen delivery pipeline. The combustion gas inlet is communicated with the air outlet of the hydrogen delivery pipeline or the air outlet of the hydrogen delivery bypass, and the air outlet of the nitrogen delivery pipeline is communicated with the combustion gas inlet;

[0007] The air delivery bypass is provided with an oxygen storage tank, and the hydrogen delivery bypass is provided with a hydrogen storage tank.

[0008] Further, the working gas source providing device includes a first solenoid valve. The first solenoid valve includes a first air inlet, a second air inlet, and a first air outlet. The outlet of the air delivery pipeline is communicated with the first air inlet of the first solenoid valve, the outlet of the air delivery bypass is communicated with the second air inlet of the first solenoid valve, and the first air outlet of the first solenoid valve is communicated with the combustion-supporting gas inlet.

[0009] Further, the working gas source providing device includes a second solenoid valve and a mixer. Both the second solenoid valve and the mixer include a first air inlet, a second air inlet, and a first air outlet. The outlet of the hydrogen delivery pipeline is communicated with the first air inlet of the second solenoid valve, the outlet of the hydrogen delivery bypass is communicated with the second air inlet of the second solenoid valve, the first air outlet of the second solenoid valve is communicated with the first air inlet of the mixer, the outlet of the nitrogen delivery pipeline is communicated with the second air inlet of the mixer, and the first air outlet of the mixer is communicated with the combustion gas inlet.

[0010] Further, the air delivery bypass is sequentially provided with a first manual valve, a first flowmeter, a first pressure regulator, the oxygen storage tank, a second flowmeter, and a first check valve. The outlet of the first check valve is communicated with the second air inlet of the first solenoid valve.

[0011] Further, the air delivery pipeline is sequentially provided with a first pressure transmitter and a first pneumatic cut-off valve. The outlet of the first pneumatic cut-off valve is communicated with the first air inlet of the first solenoid valve and the air inlet of the first manual valve.

[0012] Further, the hydrogen delivery bypass is sequentially provided with a second manual valve, a third flowmeter, a second pressure regulator, the hydrogen storage tank, a fourth flowmeter, and a second check valve. The outlet of the second check valve is communicated with the second air inlet of the second solenoid valve.

[0013] Further, the hydrogen delivery pipeline is sequentially provided with a second pressure transmitter and a second pneumatic cut-off valve. The outlet of the second pneumatic cut-off valve is communicated with the first air inlet of the second solenoid valve and the air inlet of the second manual valve.

[0014] Further, a fifth flowmeter and a third stop valve are sequentially arranged between the first air outlet of the second solenoid valve and the first air inlet of the mixer. A fourth stop valve, a third solenoid valve, and a third pressure regulator are sequentially arranged between the first air outlet of the mixer and the combustion gas inlet.

[0015] Further, the nitrogen source includes a nitrogen production component, the hydrogen source includes a hydrogen production component, and the compressed air source is a molecular sieve in an air separation system.

[0016] Further, a nitrogen storage tank, a fourth solenoid valve, a sixth flowmeter, and a fifth stop valve are sequentially arranged on the nitrogen delivery pipeline.

[0017] The working gas source providing device for the total hydrocarbon analyzer of the air separation system of the present utility model has the following technical effects:

[0018] A hydrogen delivery bypass is provided on the hydrogen delivery pipeline, and an air delivery bypass is provided on the air delivery pipeline. A hydrogen storage tank is provided on the hydrogen delivery bypass, and an oxygen storage tank is provided on the air delivery bypass. The hydrogen delivery pipeline and the hydrogen delivery bypass, and the air delivery pipeline and the air delivery bypass are backup to each other and can be switched to the other without disturbance when one of them fails. When the gas supply volume of the hydrogen delivery pipeline is insufficient, the hydrogen delivery bypass can supply gas. When the oxygen supply volume of the air delivery pipeline is insufficient, it can be switched to supply oxygen by the air delivery bypass without disturbance. In this way, the device can ensure continuous and stable gas supply to the total hydrocarbon analyzer, so that the total hydrocarbon analyzer continuously detects the total hydrocarbon content in the liquid oxygen during the operation of the air separation system, ensuring the stable and safe operation of the air separation system.

[0019] Other features and advantages disclosed in the present utility model will be described in detail in the subsequent specific implementation part. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The drawings are used to provide a further understanding of the present disclosure and constitute a part of the specification. Together with the following specific implementation, they are used to explain the present disclosure, but do not constitute a limitation to the present disclosure. In the drawings:

[0021] Figure 1 is a schematic diagram of the overall structure of a working gas source providing device for a total hydrocarbon analyzer of an air separation system shown according to an exemplary embodiment.

[0022] Reference numerals: 10, working gas source providing device for total hydrocarbon analyzer of air separation system; 20, nitrogen source; 30, nitrogen delivery pipeline; 31, fourth solenoid valve; 32, sixth flowmeter; 33, fifth stop valve; 34, nitrogen storage tank; 40, hydrogen source; 50, hydrogen delivery pipeline; 51, second pressure transmitter; 52, second pneumatic cut-off valve; 53, second solenoid valve; 54, fifth flowmeter; 55, third stop valve; 60, hydrogen delivery bypass; 61, second manual valve; 62, third flowmeter; 63, second pressure regulating valve; 64, hydrogen storage tank; 65, fourth flowmeter; 66, second check valve; 70, compressed air source; 80, air delivery pipeline; 81, first pressure transmitter; 82, first pneumatic cut-off valve; 83, first solenoid valve; 84, fourth pressure regulating valve; 90, air delivery bypass; 91, first manual valve; 92, first flowmeter; 93, first pressure regulating valve; 94, oxygen storage tank; 95, second flowmeter; 96, first check valve; 100, mixer; 101, fourth stop valve; 102, third solenoid valve; 103, third pressure regulating valve; 104, safety valve; 110, total hydrocarbon analyzer; 111, combustion gas inlet; 112, combustion-supporting gas inlet. Detailed implementation manners

[0023] The following will describe in detail the specific implementation manners disclosed in the present utility model with reference to the accompanying drawings. It should be understood that the specific implementation manners described herein are only used to illustrate and explain the present disclosure, and are not used to limit the present disclosure.

[0024] As Figure 1 shown, it is an exemplary embodiment disclosed in the present utility model. The working gas source providing device 10 for the total hydrocarbon analyzer of the air separation system of the present utility model includes a nitrogen source 20, a nitrogen delivery pipeline 30, a hydrogen source 40, a hydrogen delivery pipeline 50, a compressed air source 70, and an air delivery pipeline 80. The nitrogen source 20 is communicated with the air inlet of the nitrogen delivery pipeline 30, the hydrogen source 40 is communicated with the air inlet of the hydrogen delivery pipeline 50, the compressed air source 70 is communicated with the air inlet of the air delivery pipeline 80. The working gas inlet of the total hydrocarbon analyzer 110 includes a combustion-supporting gas inlet 112 and a combustion gas inlet 111. An air delivery bypass 90 is further provided on the air delivery pipeline 80. The combustion-supporting gas inlet 112 is communicated with the air outlet of the air delivery pipeline 80 or the air outlet of the air delivery bypass 90. A hydrogen delivery bypass 60 is further provided on the hydrogen delivery pipeline 50. The combustion gas inlet 111 is communicated with the air outlet of the hydrogen delivery pipeline 50 or the air outlet of the hydrogen delivery bypass 60. The air outlet of the nitrogen delivery pipeline 30 is communicated with the combustion gas inlet 111. An oxygen storage tank 94 is provided in the air delivery bypass 90, and a hydrogen storage tank 64 is provided in the hydrogen delivery bypass 60.

[0025] Specifically, the nitrogen source 20 includes a nitrogen generation component, the hydrogen source 40 includes a hydrogen generation component, and the compressed air source 70 is a molecular sieve in the air separation system.

[0026] The working gas source providing device 10 of the total hydrocarbon analyzer of the air separation system of the present utility model uses the hydrogen generation component and the nitrogen generation component to produce hydrogen and nitrogen, and provides combustion gas for the total hydrocarbon analyzer 110 through the hydrogen delivery pipeline 50 and the nitrogen delivery pipeline 30. A hydrogen delivery bypass 60 is also provided on the hydrogen delivery pipeline 50. The hydrogen produced by the hydrogen generation component can be stored in the hydrogen storage tank 64 provided on the hydrogen delivery bypass 60. When the hydrogen production amount of the hydrogen generation component is insufficient or a failure occurs, hydrogen can be provided by the hydrogen delivery bypass 60. The nitrogen produced by the nitrogen generation component is stored in the nitrogen storage tank 34 and then transported to the total hydrocarbon analyzer 110 through the nitrogen delivery pipeline 30. The compressed air source 70 of this device is a molecular sieve in the air separation system. The oxygen produced in the molecular sieve is transported to the total hydrocarbon analyzer 110 through the air delivery pipeline 80. At the same time, an air delivery bypass 90 is also provided on the air delivery pipeline 80. An oxygen storage tank 94 is provided on the air delivery bypass 90, and the oxygen on the air delivery pipeline 80 can be stored in advance. When the oxygen supply of the molecular sieve is insufficient or a pipeline failure occurs, the air delivery bypass 90 can provide oxygen for the total hydrocarbon analyzer 110. The working gas source providing device of the total hydrocarbon analyzer 110 provides a gas source by the nitrogen generation component, the hydrogen generation component and the molecular sieve of the air separation system, which can avoid the problem of frequent cylinder replacement. This device is provided with an air delivery bypass 90 and a hydrogen delivery bypass 60, and storage tanks are provided on the bypasses. The air delivery bypass 90 and the air delivery pipeline 80, and the hydrogen delivery bypass 60 and the hydrogen delivery pipeline 50 are mutually the main and standby, and can be switched to the other without interference when one of the paths fails, so as to ensure continuous gas supply to the total hydrocarbon analyzer 110, so that the total hydrocarbon analyzer 110 can continuously detect the total hydrocarbon content of liquid oxygen during the operation of the air separation system. Supplied by the hydrogen generation component, the nitrogen generation component and the molecular sieve, the hydrocarbon impurities in the gas can be reduced, and the accuracy of the measurement value of the total hydrocarbon analyzer 110 can be improved. In this way, the stable and safe operation of the air separation system is guaranteed.

[0027] Exemplarily, in the exemplary embodiment disclosed in the present utility model, the working gas source providing device includes a first solenoid valve 83. The first solenoid valve 83 includes a first air inlet, a second air inlet and a first air outlet. The air outlet of the air delivery pipeline 80 is communicated with the first air inlet of the first solenoid valve 83. The air outlet of the air delivery bypass 90 is communicated with the second air inlet of the first solenoid valve 83. The first air outlet of the first solenoid valve 83 is communicated with the combustion-supporting gas inlet 112.

[0028] Specifically, the air delivery bypass 90 is successively provided with a first manual valve 91, a first flowmeter 92, a first pressure regulating valve 93, an oxygen storage tank 94, a second flowmeter 95, and a first check valve 96. The air outlet of the first check valve 96 is communicated with the second air inlet of the first solenoid valve 83. The air delivery pipeline 80 is successively provided with a first pressure transmitter 81 and a first pneumatic cut-off valve 82. The air outlet of the first pneumatic cut-off valve 82 is communicated with the first air inlet of the first solenoid valve 83 and the air inlet of the first manual valve 91.

[0029] The working gas supply device 10 of the total hydrocarbon analyzer of the air separation system of the present utility model is provided with a first solenoid valve 83 at the air outlets of the air delivery pipeline 80 and the air delivery bypass 90, and the energization and de-energization of the first solenoid valve 83 are controlled to select whether to supply the combustion-supporting gas to the total hydrocarbon analyzer 110 from the air delivery pipeline 80 or the air delivery bypass 90. The air delivery bypass 90 is successively provided with a first manual valve 91, a first flowmeter 92, a first pressure regulating valve 93, an oxygen storage tank 94, a second flowmeter 95, and a first check valve 96. The air inlet of the first manual valve 91 is communicated with the air outlet of the first pneumatic cut-off valve 82, and the air outlet of the first check valve 96 is communicated with the second air inlet of the first solenoid valve 83. When the air delivery pipeline 80 supplies gas normally, the first manual valve 91 can be opened to fill the oxygen storage tank 94 on the air delivery bypass 90. The oxygen storage tank 94 is provided with a first flowmeter 92 and a second flowmeter 95 at the charging end and the gas supply end for counting the charging amount and the gas supply amount, and then calculating the amount of oxygen stored in the oxygen storage tank 94. The charging end of the oxygen storage tank 94 is provided with a first pressure regulating valve 93 for regulating the charging pressure of the oxygen storage tank 94. The gas supply end of the oxygen storage tank 94 is provided with a first check valve 96 for preventing oxygen from flowing back into the oxygen storage tank 94. The air delivery pipeline 80 is provided with a first pressure transmitter 81 and a first pneumatic cut-off valve 82. The first pressure transmitter 81 is signal-connected to the first solenoid valve 83 (not shown in the figure). When the first pressure transmitter 81 detects an abnormal pressure in the air delivery pipeline 80, the first solenoid valve 83 closes the air outlet of the air delivery pipeline 80 and opens the air outlet of the air delivery bypass 90. After the air outlet of the air delivery pipeline 80 is closed, the first pneumatic cut-off valve 82 loses air and is fully closed to cut off the supply of the compressed air source 70.

[0030] Exemplarily, such as Figure 1As shown, in the exemplary embodiment disclosed by the present utility model, the working gas source providing device includes a second solenoid valve 53 and a mixer 100. Both the second solenoid valve 53 and the mixer 100 include a first air inlet, a second air inlet, and a first air outlet. The outlet of the hydrogen delivery pipeline 50 is communicated with the first air inlet of the second solenoid valve 53. The outlet of the hydrogen delivery bypass 60 is communicated with the second air inlet of the second solenoid valve 53. The first air outlet of the second solenoid valve 53 is communicated with the first air inlet of the mixer 100. The outlet of the nitrogen delivery pipeline 30 is communicated with the second air inlet of the mixer 100. The first air outlet of the mixer 100 is communicated with the combustion gas inlet 111.

[0031] Exemplarily, the hydrogen delivery bypass 60 is sequentially provided with a second manual valve 61, a third flowmeter 62, a second pressure regulating valve 63, a hydrogen storage tank 64, a fourth flowmeter 65, and a second check valve 66. The outlet of the second check valve 66 is communicated with the second air inlet of the second solenoid valve 53. The hydrogen delivery pipeline 50 is sequentially provided with a second pressure transmitter 51 and a second pneumatic cut-off valve 52. The outlet of the second pneumatic cut-off valve 52 is communicated with the first air inlet of the second solenoid valve 53 and the air inlet of the second manual valve 61.

[0032] In the working gas source providing device 10 of the total hydrocarbon analyzer of the air separation system of the present utility model, a hydrogen delivery bypass 60 is provided on the hydrogen delivery pipeline 50. By opening the second manual valve 61, the hydrogen delivery pipeline 50 fills the hydrogen storage tank 64 provided on the hydrogen delivery bypass 60. The second pressure transmitter 51 is signal-connected to the second solenoid valve 53 (not shown in the figure). When the second pressure transmitter 51 detects an abnormal pressure in the hydrogen delivery pipeline 50, the second solenoid valve 53 closes the outlet of the hydrogen delivery pipeline 50 and opens the outlet of the hydrogen delivery bypass 60, and the hydrogen storage tank 64 supplies gas. The charging end and the gas supply end of the hydrogen storage tank 64 are provided with a third flowmeter 62 and a fourth flowmeter 65, which are used to count the charging amount, the gas supply amount, and the hydrogen storage amount of the hydrogen storage tank 64. The charging end of the hydrogen storage tank 64 is provided with a second pressure regulating valve 63, which is used to regulate the charging pressure of the hydrogen storage tank 64. The gas supply end of the hydrogen storage tank 64 is provided with a second check valve 66, which is used to prevent hydrogen from flowing back into the hydrogen storage tank 64.

[0033] Exemplarily, as Figure 1 shown, a fifth flowmeter 54 and a third stop valve 55 are sequentially provided between the first air outlet of the second solenoid valve 53 and the first air inlet of the mixer 100. A fourth stop valve 101, a third solenoid valve 102, and a third pressure regulating valve 103 are sequentially provided between the first air outlet of the mixer 100 and the combustion gas inlet 111. The nitrogen delivery pipeline 30 is sequentially provided with a nitrogen storage tank 34, a fourth solenoid valve 31, a sixth flowmeter 32, and a fifth stop valve 33.

[0034] In the exemplary embodiments disclosed by the present utility model, the fifth flowmeter 54 is used to count the amount of hydrogen flowing into the mixer 100, and the sixth flowmeter 32 is used to count the amount of nitrogen flowing into the mixer 100. Thus, by controlling the opening and closing of the fourth solenoid valve 31 and the second solenoid valve 53, the working combustion gas of the total hydrocarbon analyzer 110 is proportionally configured in the mixer 100. The third stop valve 55 is used to prevent the gas in the mixer 100 from flowing back into the second solenoid valve 53, the fourth stop valve 101 is used to prevent the combustion gas from flowing back into the mixer 100, and the fifth stop valve 33 is used to prevent the gas in the mixer 100 from flowing back into the nitrogen delivery pipeline 30. The first solenoid valve 83 is used to control the air delivery pipeline 80 and the air delivery bypass 90 to supply combustion-supporting gas to the total hydrocarbon analyzer 110. A fourth pressure regulating valve 84 is further provided between the first solenoid valve 83 and the combustion-supporting gas inlet 112 to regulate the supply pressure of the combustion-supporting gas at the combustion-supporting gas inlet 112. The third solenoid valve 102 is used to control the mixer 100 to supply combustion gas to the total hydrocarbon analyzer 110, and the third pressure regulating valve 103 is used to regulate the supply pressure of the combustion gas at the combustion gas inlet 111. The nitrogen storage tank 34 provided on the nitrogen delivery pipeline 30 can cache the nitrogen produced by the nitrogen production assembly. A safety valve 104 is provided on the mixer 100 to exhaust gas outward when the pressure in the mixer 100 is too high. The mixer 100 can not only mix hydrogen and nitrogen in proportion, but also has a caching function. When the hydrogen delivery pipeline 50, the hydrogen delivery bypass 60, and the nitrogen delivery pipeline 30 stop supplying gas, the mixer 100 can continue to supply combustion gas to the total hydrocarbon analyzer 110.

[0035] The preferred embodiments of the present disclosure have been described in detail above in conjunction with the accompanying drawings. However, the present disclosure is not limited to the specific details in the above embodiments. Within the scope of the technical concept of the present disclosure, various simple modifications can be made to the technical solutions of the present disclosure, and these simple modifications all fall within the protection scope of the present disclosure.

[0036] In addition, it should be noted that, in the various specific technical features described in the above specific embodiments, they can be combined in any suitable manner without contradiction. To avoid unnecessary repetition, the present disclosure will not separately describe various possible combination methods.

[0037] In addition, any combination can be made between various different embodiments of the present disclosure, as long as it does not violate the idea of the present disclosure, and it should also be regarded as the content disclosed by the present disclosure.

Claims

1. An operating gas source providing device for a total hydrocarbon analyzer of an air separation system, characterized in that, It includes a nitrogen source, a nitrogen delivery pipeline, a hydrogen source, a hydrogen delivery pipeline, a compressed air source and an air delivery pipeline. The nitrogen source is communicated with the inlet of the nitrogen delivery pipeline. The hydrogen source is communicated with the inlet of the hydrogen delivery pipeline. The compressed air source is communicated with the inlet of the air delivery pipeline; The working gas source inlet of the total hydrocarbon analyzer includes an auxiliary gas inlet and a combustion gas inlet. An air delivery bypass is also provided on the air delivery pipeline. The auxiliary gas inlet is communicated with the outlet of the air delivery pipeline or the outlet of the air delivery bypass; A hydrogen delivery bypass is also provided on the hydrogen delivery pipeline. The combustion gas inlet is communicated with the outlet of the hydrogen delivery pipeline or the outlet of the hydrogen delivery bypass. The outlet of the nitrogen delivery pipeline is communicated with the combustion gas inlet; An oxygen storage tank is provided on the air delivery bypass. A hydrogen storage tank is provided on the hydrogen delivery bypass.

2. The working gas source providing device for the total hydrocarbon analyzer of the air separation system according to claim 1, characterized in that, The working gas source providing device includes a first solenoid valve. The first solenoid valve includes a first inlet, a second inlet and a first outlet. The outlet of the air delivery pipeline is communicated with the first inlet of the first solenoid valve. The outlet of the air delivery bypass is communicated with the second inlet of the first solenoid valve. The first outlet of the first solenoid valve is communicated with the auxiliary gas inlet.

3. The working gas source providing device for the total hydrocarbon analyzer of the air separation system according to claim 1, characterized in that, The working gas source providing device includes a second solenoid valve and a mixer. Both the second solenoid valve and the mixer include a first inlet, a second inlet and a first outlet. The outlet of the hydrogen delivery pipeline is communicated with the first inlet of the second solenoid valve. The outlet of the hydrogen delivery bypass is communicated with the second inlet of the second solenoid valve. The first outlet of the second solenoid valve is communicated with the first inlet of the mixer. The outlet of the nitrogen delivery pipeline is communicated with the second inlet of the mixer. The first outlet of the mixer is communicated with the combustion gas inlet.

4. The working gas source providing device of the total hydrocarbon analyzer for the air separation system according to claim 2, wherein The air delivery bypass is sequentially provided with a first manual valve, a first flowmeter, a first pressure regulating valve, the oxygen storage tank, a second flowmeter and a first check valve. The outlet of the first check valve is communicated with the second inlet of the first solenoid valve.

5. The working gas source providing device for the total hydrocarbon analyzer of the air separation system according to claim 4, characterized in that, The air delivery pipeline is sequentially provided with a first pressure transmitter and a first pneumatic cut-off valve. The outlet of the first pneumatic cut-off valve is communicated with the first inlet of the first solenoid valve and the inlet of the first manual valve.

6. The working gas source providing device for the total hydrocarbon analyzer of the air separation system according to claim 3, wherein The hydrogen delivery bypass is sequentially provided with a second manual valve, a third flowmeter, a second pressure regulating valve, the hydrogen storage tank, a fourth flowmeter and a second check valve. The outlet of the second check valve is communicated with the second inlet of the second solenoid valve.

7. The working gas source providing device for the total hydrocarbon analyzer of the air separation system according to claim 6, characterized in that, The hydrogen delivery pipeline is sequentially provided with a second pressure transmitter and a second pneumatic cut-off valve. The outlet of the second pneumatic cut-off valve is communicated with the first inlet of the second solenoid valve and the inlet of the second manual valve.

8. The working gas source providing device for the total hydrocarbon analyzer of the air separation system according to claim 3, characterized in that, A fifth flowmeter and a third stop valve are sequentially provided between the first outlet of the second solenoid valve and the first inlet of the mixer. A fourth stop valve, a third solenoid valve and a third pressure regulating valve are sequentially provided between the first outlet of the mixer and the combustion gas inlet.

9. The working gas source providing device for the total hydrocarbon analyzer of the air separation system according to claim 1, wherein, The nitrogen source includes a nitrogen production component, the hydrogen source includes a hydrogen production component, and the compressed air source is a molecular sieve in an air separation system.

10. The working gas source providing device for the total hydrocarbon analyzer of the air separation system according to claim 1, characterized in that, A nitrogen storage tank, a fourth solenoid valve, a sixth flowmeter, and a fifth stop valve are sequentially arranged on the nitrogen pipeline.

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