Gas distribution system for improving gas supply safety

Abstract

The utility model provides a gas distribution system for improving gas supply safety, which is characterized by comprising a gas storage tank, a first gas distribution row, manual gas distribution equipment, a second gas distribution row, a mixed gas tank and at least one group of gas distribution units, and each group of gas distribution units comprises a gas distribution busbar, a gas distribution row and a standby gas distribution busbar; wherein the gas storage tank, the first gas distribution row, the second gas distribution row and the mixed gas tank are sequentially communicated through a pipeline; the gas distribution busbar and the standby gas distribution busbar are respectively communicated with the gas distribution row through pipelines; and the manual gas distribution equipment is respectively communicated with the gas distribution row, the first gas distribution row and the second gas distribution row through pipelines. Based on the system provided by the utility model, the operation safety of shield operation personnel can be effectively guaranteed.

Description

Technical Field

[0001] This utility model belongs to the field of gas distribution, and in particular relates to a gas distribution system that improves the safety of gas supply. Background Technology

[0002] In high-pressure operations, such as cutter replacement in tunnel boring machines (TBMs), most operations utilize pressurized air for cutter replacement, i.e., compressed air is used for the chamber operation. This method has several drawbacks: it exceeds the 6.0 bar limit for compressed air chamber opening technology; each shift requires pressurization and depressurization to atmospheric pressure, resulting in only 20-25 minutes of effective working time per shift, with a total depressurization time exceeding 180 minutes, leading to low work efficiency and significantly impacting project progress; multiple depressurization procedures daily result in a high incidence of depressurization-related illnesses, harming the health of workers; workers breathing compressed air experience increased gas density and breathing resistance, reducing their work capacity; and the anesthetic effect of nitrogen in compressed air severely impairs workers' risk awareness and judgment, increasing the risk of personal injury accidents. Therefore, proper air distribution is particularly important for TBM operations.

[0003] Chinese utility model patent CN202868900U discloses an environmental gas distribution system applied to a circulating air supply system. The circulating air supply system includes an air supply duct connected to the working environment. The environmental gas distribution system includes: an oxygen pipeline with its inlet connected to an oxygen source and its outlet connected to the working environment; an oxygen environment detection device installed in the working environment and connected to a control device via a data cable; a control device connected to a solenoid valve via a control cable; and a solenoid valve installed inside the oxygen pipeline, controlling the opening or closing of the oxygen pipeline according to the instructions of the control device. This utility model replenishes oxygen in the circulating air supply system based on the actual oxygen consumption of the working environment, ensuring the oxygen content of the working environment. However, in actual use, if a channel malfunctions, the gas supply must be stopped for maintenance, which cannot guarantee the safety of high-pressure workers. Therefore, this device cannot be used in high-pressure operations. Utility Model Content

[0004] To address the problems existing in the prior art, this utility model provides a gas distribution system that improves gas supply safety, aiming to effectively ensure the operational safety of high-pressure workers.

[0005] As one aspect of this utility model, a gas distribution system for improving gas supply safety is provided, comprising: a gas storage tank, a first gas distributor, a manual gas distribution device, a second gas distributor, a mixing tank, and at least one set of gas distribution units, each set of gas distribution units comprising a gas distribution manifold, a gas distributor, and a backup gas distribution manifold;

[0006] Among them, the gas storage tank, the first gas distributor, the second gas distributor, and the mixed gas tank are connected in sequence through pipelines; the gas distribution manifold and the standby gas distribution manifold are respectively connected to the gas distributors through pipelines;

[0007] The manual gas distribution equipment is connected to the gas distributor, the first gas distributor, and the second gas distributor via pipelines; valves are installed on the pipelines between the manual gas distribution equipment and the gas distributor, the first gas distributor, and the second gas distributor; valves are installed on the pipelines between the gas distribution manifold and the standby gas distribution manifold and the gas distributor; valves are installed on the pipelines between the first gas distributor and the second gas distributor, as well as on the pipelines between the gas distributor and the second gas distributor.

[0008] As a preferred embodiment of the gas distribution system for improving gas supply safety according to this utility model, check valves are installed on the pipelines between the first gas distributor and the second gas distributor, as well as on the pipelines between the gas distributor and the second gas distributor; check valves are also installed on the pipelines between the gas distribution manifold and the standby gas distribution manifold and the gas distributor.

[0009] As a preferred embodiment of the gas distribution system for improving gas supply safety according to this utility model, the manual gas distribution device includes a control module for controlling the opening and closing of valves between the manual gas distribution device and the gas distributor, the first gas distributor and the second gas distributor, and a flow controller for controlling the flow rate of each gas flowing through the manual gas distribution device.

[0010] As a preferred embodiment of the gas distribution system for improving gas supply safety according to this utility model, a filter device is provided on the pipeline between the gas storage tank and the first gas distributor and / or the pipeline between the first gas distributor and the second gas distributor.

[0011] As a preferred embodiment of the gas distribution system for improving gas supply safety according to this utility model, both the gas distribution manifold and the standby gas distribution manifold include at least one air inlet.

[0012] As a preferred embodiment of the gas distribution system for improving gas supply safety according to this utility model, a flow controller is installed on the pipeline between the first gas distributor and the second gas distributor.

[0013] As a preferred embodiment of the gas distribution system for improving gas supply safety according to this utility model, a flow controller and / or a filter device are installed on the pipeline between the gas distribution outlet and the second gas distribution outlet.

[0014] As a preferred embodiment of the gas distribution system for improving gas supply safety according to this utility model, the system further includes a gas detection device, which is connected to the gas mixing tank through a pipeline and a valve is installed on the pipeline.

[0015] It should be noted that, unless otherwise specified, in the technical solution of this utility model, each component has a through channel that allows gas to enter from the inlet and exit from the outlet.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] The system of this utility model effectively avoids gas supply safety problems caused by gas supply line failures by adopting a backup gas supply line. At the same time, it ensures the continuity of gas distribution by using a backup gas distribution manifold, thereby improving gas supply safety. Attached Figure Description

[0018] Figure 1 A schematic diagram of one type of gas distribution system of this utility model;

[0019] Figure 2 A flow diagram of another gas distribution system of this utility model;

[0020] Among them, 1-gas storage tank, 2-first gas distributor, 3-manual gas distribution device, 4-second gas distributor, 5-gas distribution manifold, 6-third gas distributor, 7-standby gas distribution manifold, 8-second gas distribution manifold, 9-fourth gas distributor, 10-standby second gas distribution manifold, 11-mixing gas tank, 12-valve, 13-check valve, 14-flow controller. Detailed Implementation

[0021] The technical solutions in the embodiments will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0022] See Figure 1 In one specific embodiment of this utility model, a gas distribution system for improving gas supply safety is provided, comprising:

[0023] The gas storage tank 1, the first gas distributor 2, the manual gas distribution device 3, the second gas distributor 4, the mixing gas tank 11, and a set of gas distribution units, wherein the gas distribution unit includes a gas distribution manifold 5 (6 openable and closable air inlets), a third gas distributor 6, and a spare gas distribution manifold 7 (6 openable and closable air inlets).

[0024] Among them, the gas storage tank, the first gas distributor, the second gas distributor, and the mixed gas tank are connected in sequence through pipelines; the gas distribution manifold and the standby gas distribution manifold are respectively connected to the third gas distributor through pipelines;

[0025] The manual gas distribution device is connected to the first, second, and third gas outlets via pipelines; valves are installed on the pipelines between the manual gas distribution device and the first, second, and third gas outlets; valves are installed on the pipelines between the gas distribution manifold and the standby gas distribution manifold and the gas outlets; valves are installed on the pipelines between the first and second gas outlets and between the third and second gas outlets. In this specific embodiment, each component has a through channel that allows gas to enter from the inlet and exit from the outlet.

[0026] The working principle of the aforementioned gas distribution system is as follows:

[0027] Connect the 6 gas distribution source devices to the gas distribution manifold and the 6 gas distribution source devices to the standby gas distribution manifold. Open the valves between the gas storage tank and the first gas distribution manifold, the valves between the gas distribution manifold and the third gas distribution manifold, and the valves between the first and third gas distribution manifolds and the second gas distribution manifold. At the same time, keep the valves between the manual gas distribution equipment and the first, second, and third gas distribution manifolds closed.

[0028] According to the predetermined gas distribution plan, the flow rate of each compressed gas is adjusted by the flow controller between the first, third and second gas outlets, and the pipeline between the first, third and second gas outlets is monitored to ensure that the pipeline is normal and the gas supply to the gas distribution manifold and the second gas distribution manifold is normal.

[0029] When at least one pipeline between the first and third gas outlets and the second gas outlet malfunctions (e.g., a blockage in the pipeline between the first and second gas outlets), close the valves between the first and third gas outlets and the second gas outlet. Use a manual gas distribution device to open the valves between the manual gas distribution device and the first, second, and third gas outlets, and adjust the flow rate of each gas according to the predetermined gas distribution plan using the manual gas distribution device. If the gas supply from the gas distribution manifold is insufficient during the gas distribution process, close the valve between the gas distribution manifold and the third gas outlet, and open the valve between the standby gas distribution manifold and the third gas outlet to ensure a continuous and smooth supply of oxygen until the gas distribution is completed.

[0030] In another specific embodiment of this utility model, in order to better ensure the cleanliness of the supplied gas, a filter device is provided on the pipeline between the gas storage tank and the first gas distributor and / or the pipeline between the first gas distributor and the second gas distributor.

[0031] In another specific embodiment of this utility model, in order to prevent gas backflow, check valves 13 are installed on the pipelines between the first and third gas outlets and the second gas outlet; check valves 13 are installed on the pipelines between the gas distribution manifold and the spare gas distribution manifold and the third gas outlet.

[0032] See Figure 2In another specific embodiment of this utility model, a gas distribution system for improving gas supply safety is provided, used to configure a ternary gas system, wherein the gas sources of the ternary gas are compressed air, oxygen, and helium, and the gas distribution system includes:

[0033] The system includes a gas storage tank 1, a first gas distributor 2, a manual gas distribution device 3, a second gas distributor 4, a mixing gas tank 11, and two sets of gas distribution units. Each gas distribution unit includes a gas distribution manifold 5 (6 openable and closable air inlets), a third gas distributor 6, a backup gas distribution manifold 7 (6 openable and closable air inlets), a second gas distribution manifold 8 (6 openable and closable air inlets), a fourth gas distributor 9, and a backup second gas distribution manifold 10 (6 openable and closable air inlets).

[0034] Among them, gas storage tank 1, first gas distributor 2, second gas distributor 4, and mixed gas tank 11 are connected in sequence through pipelines; gas distribution manifold 5 (providing backup oxygen) and backup gas distribution manifold 7 (providing oxygen) are respectively connected to third gas distributor 6 through pipelines; second gas distribution manifold 8 (providing helium) and backup second gas distribution manifold 10 (providing backup helium) are respectively connected to fourth gas distributor 9 through pipelines; third and fourth gas distributors are respectively connected to second gas distributor 4 through pipelines.

[0035] The manual gas distribution device 2 is connected to the first, second, third, and fourth gas distribution outlets via pipelines; valves 12 are installed on the pipelines between the manual gas distribution device 2 and the first, second, third, and fourth gas distribution outlets; valves 12 are installed on the pipelines between the gas distribution manifold 5 and the standby gas distribution manifold 7 and the third gas distribution outlet 6; valves 12 are installed on the pipelines between the second gas distribution manifold 8 and the standby second gas distribution manifold 10 and the fourth gas distribution outlet 9; valves 12 and flow controllers 14 are installed on the pipelines between the first, third, and fourth gas distribution outlets and the second gas distribution outlet 4.

[0036] The manual gas distribution device includes a control module for controlling the opening and closing of valves between the manual gas distribution device and the first, second, third, and fourth gas outlets, and a flow controller for controlling the flow of compressed air, oxygen, and helium through the manual gas distribution device. In this embodiment, each component has a through channel that allows gas to enter from the inlet and exit from the outlet.

[0037] In another specific embodiment of this utility model, in order to better ensure the cleanliness of the supplied gas, a filter device is provided on the pipeline between the gas storage tank and the first gas distributor and / or the pipeline between the first gas distributor and the second gas distributor; a filter device is provided on the pipeline between the third gas distributor and the second gas distributor; and a filter device is provided on the pipeline between the fourth gas distributor and the second gas distributor.

[0038] In another specific embodiment of this utility model, in order to prevent gas backflow, check valves 13 are installed on the pipelines between the first, third, and fourth gas outlets and the second gas outlet; check valves 13 are installed on the pipelines between the gas distribution manifold and the standby gas distribution manifold and the third gas outlet; and check valves 13 are installed on the pipelines between the second gas distribution manifold and the standby second gas distribution manifold and the fourth gas outlet.

[0039] In another specific embodiment of this utility model, in order to detect the accuracy of gas distribution in the gas distribution system, the system further includes a gas detection device. The gas detection device is connected to the gas mixing tank through a pipeline, and a valve is installed on the pipeline. When it is necessary to detect the distributed gas, the valve is opened, and the gas flows into the detection device to achieve detection.

[0040] It should be noted that, based on the above embodiments of this utility model, those skilled in the art can fully realize the scope of the independent claims and dependent claims of this utility model, and the implementation process and methods are the same as those in the above embodiments; and the parts of this utility model not described in detail belong to the well-known technology in the art. However, the protection scope of this utility model is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model.

Claims

1. A gas distribution system for improving gas supply safety, characterized in that, include: The gas storage tank, the first gas distributor, the manual gas distribution device, the second gas distributor, the mixing tank, and at least one set of gas distribution units, each set of gas distribution units including a gas distribution manifold, a gas distributor, and a standby gas distribution manifold; Among them, the gas storage tank, the first gas distributor, the second gas distributor, and the mixed gas tank are connected in sequence through pipelines; the gas distribution manifold and the standby gas distribution manifold are respectively connected to the gas distributors through pipelines; The manual gas distribution equipment is connected to the gas distributor, the first gas distributor, and the second gas distributor via pipelines.

2. The gas distribution system as described in claim 1, characterized in that, Valves are installed on the pipelines between the manual gas distribution equipment and the gas distributor, the first gas distributor and the second gas distributor; valves are installed on the pipelines between the gas distribution manifold and the standby gas distribution manifold and the gas distributor; valves are installed on the pipelines between the first gas distributor and the second gas distributor, as well as on the pipelines between the gas distributor and the second gas distributor.

3. The gas distribution system as described in claim 1, characterized in that, Check valves are installed on the pipelines between the first and second gas distributors, as well as on the pipelines between the gas distributor and the second gas distributor; check valves are also installed on the pipelines between the gas distribution manifold and the standby gas distribution manifold and the gas distributor.

4. The gas distribution system according to any one of claims 1-3, characterized in that, The manual gas distribution equipment includes a control module for controlling the opening and closing of valves between the manual gas distribution equipment and the gas distributor, the first gas distributor and the second gas distributor, and a flow controller for controlling the flow rate of each gas stream passing through the manual gas distribution equipment.

5. The gas distribution system according to any one of claims 1-3, characterized in that, A filter device is installed on the pipeline between the gas storage tank and the first gas outlet and / or the pipeline between the first gas outlet and the second gas outlet.

6. The gas distribution system according to any one of claims 1-3, characterized in that, Both the air distribution manifold and the standby air distribution manifold include at least one air inlet.

7. The gas distribution system according to any one of claims 1-3, characterized in that, A flow controller is installed on the pipe between the first and second gas outlets.

8. The gas distribution system according to any one of claims 1-3, characterized in that, A flow controller and / or filter device are installed on the pipe between the first gas outlet and the second gas outlet.

9. The gas distribution system according to any one of claims 1-3, characterized in that, The system also includes a gas detection device, which is connected to the gas mixing tank via a pipeline and has a valve installed on the pipeline.

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