Food-grade nitrogen collection and analysis system

Abstract

The utility model belongs to the technical field of nitrogen application in the food industry, and particularly relates to a food-grade nitrogen collection and analysis system which is characterized by comprising a low-temperature pressure tank, a pump, a vaporizer, a busbar, a filling gas cylinder, a pressure reducer, a flow meter and a gas analyzer, an outlet of the low-temperature pressure tank is sequentially connected with a pump, a vaporizer, a busbar and a filling gas cylinder through pipelines; the top of the low-temperature pressure tank is communicated with an analysis pipe through a purging pipe, a sixth valve is arranged on the purging pipe, the analysis pipe is communicated with an inlet of a gas analyzer through a seventh valve, a pressure reducer and a flowmeter in sequence, and an outlet of the gas analyzer is connected with a first diffusion pipe; an inlet pipeline of the gas analyzer is connected with a second bleeder, and a ninth valve is arranged on the second bleeder. The utility model has the beneficial effects that the purity of food-grade nitrogen is subjected to centralized remote analysis and detection, so that the number of times that analysis and test personnel enter and exit from a site is reduced, and the automation control level of a production workshop is favorably improved.

Description

Technical Field

[0001] This utility model belongs to the field of nitrogen application technology in the food industry, and in particular relates to a food-grade nitrogen collection and analysis system. Background Technology

[0002] Nitrogen is widely used in the food industry for beverage propulsion, atmosphere modification, freezing and quick-freezing processing, storage, and transportation. Nitrogen filling, as a crucial means of preservation and protection, requires strict adherence to operational standards. First, the purity of the nitrogen must be ensured, typically requiring a purity of 99.99% or higher to eliminate any impurities and harmful substances. Before filling food-grade nitrogen, raw material storage tanks, pipelines, and gas cylinders must be analyzed and tested. Filling only proceeds after indicators such as oxygen content, water content, carbon monoxide, and carbon dioxide meet the standards. Analysis and testing personnel must conduct these analyses on-site. However, frequent entry into the production workshop by these personnel can introduce contaminants such as bacteria and dust, affecting the safety and reliability of food production. Utility Model Content

[0003] The purpose of this invention is to provide a food-grade nitrogen collection and analysis system that overcomes the shortcomings of existing technologies. By conducting centralized remote analysis and detection of the purity of food-grade nitrogen, it aims to reduce the number of times analytical personnel need to enter and exit the site, prevent the introduction of bacteria, dust, and other impurities by analytical personnel, improve work efficiency, and reduce costs.

[0004] To achieve the above objectives, this utility model employs the following technical solution:

[0005] A food-grade nitrogen gas collection and analysis system includes a cryogenic pressure tank, a pump, a vaporizer, a manifold, a filling gas cylinder, a pressure reducer, a flow meter, and a gas analyzer. The outlet of the cryogenic pressure tank is connected sequentially to the pump, vaporizer, manifold, and filling gas cylinder via pipelines. A pressure gauge and a first valve are installed on the outlet pipeline of the cryogenic pressure tank. A second valve is installed on the inlet pipeline of the pump. A third valve is installed on the pipeline between the pump outlet and the vaporizer inlet. An eighth valve, a pressure gauge, and a fifth valve are sequentially installed on the pipeline between the vaporizer outlet and the manifold inlet. The outlet of the manifold is connected to the filling gas cylinder, and the inlet of the manifold is connected to an analysis tube. The top of the cryogenic pressure tank is also connected to the analysis tube via a purge pipe equipped with a sixth valve. The analysis tube is sequentially connected to the inlet of the gas analyzer via a seventh valve, a pressure reducer, and a flow meter. The outlet of the gas analyzer is connected to a first vent pipe. A second vent pipe is connected to the inlet pipeline of the gas analyzer, and a ninth valve is installed on the second vent pipe.

[0006] Furthermore, the first, second, third, fifth, and eighth valves are all manual valves; the sixth, seventh, and ninth valves are all pneumatically controlled valves. The pneumatically controlled valves are connected to the controller via control pipes. The controller is connected to the cryogenic pressure tank via a pressure output pipe, and a fourth valve is provided on the pressure output pipe.

[0007] Furthermore, the gas analyzer is any one or a combination of two or more of the following: an O2 analyzer, a CO analyzer, a CO2 analyzer, and an H2O analyzer.

[0008] Furthermore, the busbar includes a main branch and branch lines, and each of the main branch and branch lines is equipped with a manual valve.

[0009] Furthermore, the pressure reducer is model YQD-07.

[0010] Furthermore, the flow meter is model AMS2106R05.

[0011] Furthermore, the vaporizer is model QH-400m 3 / h.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] 1) By conducting centralized remote analysis and detection of the purity of food-grade nitrogen (including parameters such as oxygen content, water content, carbon monoxide content, and carbon dioxide content), the number of times analytical personnel need to enter and exit the site is reduced, preventing analytical personnel from bringing in contaminants such as bacteria and dust.

[0014] 2) It improved the efficiency of analytical testing, reduced the number of analytical testing personnel, saved labor costs, and helped improve the level of automation control in the production workshop. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the process flow of an embodiment of this utility model.

[0016] In the diagram: 1-Cryogenic pressure tank, 2-Pump, 3-Vaporizer, 4-Manifold, 5-Filling gas cylinder, 6-Pressure regulator, 7-Flow meter, 8-Gas analyzer, 9-Pressure gauge one, 10-First valve, 11-Second valve, 12-Third valve, 13-Fourth valve, 14-Fifth valve, 15-Sixth valve, 16-Seventh valve, 17-Eighth valve, 18-Ninth valve, 19-Purge pipe, 20-Analysis pipe, 21-First vent pipe, 22-Second vent pipe, 23-Controller, 24-Manual valve, 25-Pressure gauge two. Detailed Implementation

[0017] The technical solution of this utility model will be clearly and completely described below with reference to specific embodiments. Obviously, the described embodiments are some embodiments of this utility model, but not all embodiments.

[0018] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the specific embodiments used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the specific embodiments described below are some embodiments of this utility model. For those skilled in the art, other specific embodiments can be obtained based on these specific embodiments without creative effort.

[0019] The components of the present invention described and shown in the specific embodiments herein can be arranged and designed in numerous different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the specific embodiments is not intended to limit the scope of the claimed invention, but only to illustrate selected embodiments of the invention.

[0020] See Figure 1 This is a schematic diagram of the process flow of an embodiment of a food-grade nitrogen gas collection and analysis system of this utility model. It includes a cryogenic pressure tank 1, a pump 2, a vaporizer 3, a manifold 4, a filling gas cylinder 5, a pressure reducer 6, a flow meter 7, and a gas analyzer 8. The outlet of the cryogenic pressure tank 1 is connected sequentially to the pump 2, the vaporizer 3, the manifold 4, and the filling gas cylinder 5 via pipelines. A pressure gauge 9 and a first valve 10 are installed on the outlet pipeline of the cryogenic pressure tank 1. A second valve 11 is installed on the inlet pipeline of the pump 2. A third valve 12 is installed on the pipeline between the outlet of the pump 2 and the inlet of the vaporizer 3. An eighth valve 17 and a pressure gauge 25 are sequentially installed on the pipeline between the outlet of the vaporizer 3 and the inlet of the manifold 4. The outlet of the manifold 4 is connected to the filling gas cylinder 5 via the fifth valve 14. The manifold 4 includes a main branch and a branch line, and each branch line is equipped with a hand valve 24, which is opened and closed according to the number of filling gas cylinders 5. The inlet of the manifold 4 is connected to the analysis tube 20. The top of the cryogenic pressure tank 1 is also connected to the analysis tube 20 via the purge pipe 19. The purge pipe 19 is equipped with a sixth valve 15. The analysis tube 20 is connected to the inlet of the gas analyzer 8 via the seventh valve 16, the pressure reducer 6, and the flow meter 7 in sequence. The outlet of the gas analyzer 8 is connected to the first vent pipe 21. The inlet pipe of the gas analyzer 8 is connected to the second vent pipe 22, and the second vent pipe 22 is equipped with a ninth valve 18.

[0021] In this embodiment, the first valve 10, the second valve 11, the third valve 12, the fifth valve 14, and the eighth valve 17 are all manual valves; the sixth valve 15, the seventh valve 16, and the ninth valve 18 are all pneumatically controlled valves. The pneumatically controlled valves are connected to the controller 23 through a control pipe. The controller 23 is connected to the cryogenic pressure tank 1 through a pressure output pipe, and a fourth valve 13 is provided on the pressure output pipe.

[0022] Gas analyzer 8 is a combination of O2 analyzer, CO analyzer, CO2 analyzer, and H2O analyzer, which respectively detect parameters such as oxygen content, water content, carbon monoxide content, and carbon dioxide content in nitrogen to determine whether the purity of nitrogen within the detection range is qualified. Pressure regulator 6 is model YQD-07. Flow meter 7 is model AMS2106R05. Vaporizer 3 is model QH-400M. 3 / h.

[0023] The usage process of this utility model embodiment is as follows:

[0024] 1) The cryogenic pressure tank 1 containing food nitrogen raw materials is passed through the purge pipe 19, the sixth valve 15, and the seventh valve 16, and the flow rate is controlled to be below 10 ml / min by the flow meter 7, and then enters the pressure reducer 6 to reduce the pressure to 0.1-0.05 MPa.

[0025] 2) After opening the ninth valve 19 to purge and replace the analysis tube 20 for 2 minutes, close the ninth valve 19. The gas in the analysis tube 20 enters the gas analyzer 8 to complete the analysis of oxygen content, water content, carbon monoxide and carbon dioxide in the low temperature pressure tank 1.

[0026] 3) After the gas passes the gas analyzer 8 to analyze the oxygen content, water content, carbon monoxide and carbon dioxide content and the gas passes the test, close the sixth valve 15 and the seventh valve 16 and open the ninth valve 18 to release the gas.

[0027] 4) Open the first valve 10, the second valve 11, the third valve 12, and the eighth valve 17 to start pump 2. Through vaporizer 3 and the fifth valve 14, the gas enters the filling gas cylinder 5. Open the seventh valve 16 and the ninth valve 18 to purge and replace the pipeline for 2 minutes. Then close the ninth valve 18. The gas flow rate enters the oxygen content, water content, carbon monoxide, and carbon dioxide analyzers respectively. After the gas analysis is qualified, close the seventh valve 16 and the gas is released through the ninth valve 18. At this time, the purity detection of the gas in the pipeline along the vaporizer is completed.

[0028] 5) After filling gas cylinder 5 with a certain amount of gas, close the fifth valve 14 and the sixth valve 15, and open the hand valve 24 and the seventh valve 16 on the manifold to complete the detection of the gas purity in the gas cylinder.

[0029] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A food-grade nitrogen gas collection and analysis system, characterized in that, The system includes a cryogenic pressure tank, a pump, a vaporizer, a manifold, a filling gas cylinder, a pressure reducer, a flow meter, and a gas analyzer. The outlet of the cryogenic pressure tank is connected sequentially to the pump, vaporizer, manifold, and filling gas cylinder via pipelines. The outlet pipeline of the cryogenic pressure tank is equipped with a pressure gauge and a first valve. The inlet pipeline of the pump is equipped with a second valve. The pipeline between the pump outlet and the vaporizer inlet is equipped with a third valve. The pipeline between the vaporizer outlet and the manifold inlet is equipped with an eighth valve, a pressure gauge, and a fifth valve in sequence. The outlet of the manifold is connected to the filling gas cylinder, and the inlet of the manifold is connected to the analysis tube. The top of the cryogenic pressure tank is also connected to the analysis tube via a purge pipe equipped with a sixth valve. The analysis tube is connected sequentially to the inlet of the gas analyzer via a seventh valve, a pressure reducer, and a flow meter. The outlet of the gas analyzer is connected to a first vent pipe. The inlet pipeline of the gas analyzer is connected to a second vent pipe, which is equipped with a ninth valve.

2. The food-grade nitrogen collection and analysis system according to claim 1, characterized in that, The first, second, third, fifth, and eighth valves are all manual valves; the sixth, seventh, and ninth valves are all pneumatically controlled valves. The pneumatically controlled valves are connected to the controller via a control pipe. The controller is connected to the cryogenic pressure tank via a pressure output pipe, and a fourth valve is provided on the pressure output pipe.

3. The food-grade nitrogen collection and analysis system according to claim 1, characterized in that, The gas analyzer is any one or a combination of two or more of the following: O2 analyzer, CO analyzer, CO2 analyzer, and H2O analyzer.

4. The food-grade nitrogen collection and analysis system according to claim 1, characterized in that, The busbar includes a main branch and branch lines, and each main branch and branch line is equipped with a manual valve.

5. The food-grade nitrogen collection and analysis system according to claim 1, characterized in that, The pressure reducer is model YQD-07.

6. The food-grade nitrogen gas collection and analysis system according to claim 1, characterized in that, The flow meter is model AMS2106R05.

7. The food-grade nitrogen collection and analysis system according to claim 1, characterized in that, The vaporizer is model QH-400m 3 / h.

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