Nitric acid pipeline system capable of increasing loading speed

Abstract

The utility model relates to the technical field of chemical engineering, in particular to a nitric acid pipeline system capable of increasing the loading speed. The utility model discloses a nitric acid pipeline system capable of improving loading speed, which comprises at least one first nitric acid tank, at least one second nitric acid tank and at least one third nitric acid tank, the second nitric acid tank is provided with a second outlet; the main conveying pipeline is connected with the first outlet and the second outlet; and the double-valve control mechanism is arranged on the main conveying pipeline and is used for controlling the flowing direction and flow of nitric acid. According to the nitric acid pipeline system capable of improving the loading speed, the double-valve control mechanism is arranged on the main conveying pipeline, the risk of misoperation possibly occurring during single-valve control is reduced, it is ensured that the flowing direction and flow of nitric acid are more accurately controlled through cooperative work of the two valves, and the loading speed is increased. The problem that inspection is incomplete due to the fact that the number of the valves is large and distribution is complex is effectively solved, nitric acid with different concentrations is prevented from flowing in the pipeline, and therefore the product quality is guaranteed.

Description

Technical Field

[0001] This application relates to the technical field of chemical production, and in particular to a nitric acid pipeline system for improving loading speed. Background Technology

[0002] In the production and storage of nitric acid, the acid loading pipeline system in the nitric acid tank area plays a crucial role. With the expansion of production scale and the diversification of market demand, the concentration and variety of nitric acid are also increasing, placing higher demands on the configuration of the acid loading pipeline. Currently, the acid loading pipeline system in the nitric acid tank area has gradually achieved automation and intelligence; however, in actual operation, some technical problems still urgently need to be solved.

[0003] In the nitric acid tank area, nitric acid of different concentrations needs to be loaded onto trucks through different pipelines. However, due to limitations in pipeline configuration and cumbersome valve switching procedures, the loading speed is somewhat restricted. This not only affects production efficiency but also increases operating costs.

[0004] During the acid loading process, due to the large number and complex distribution of valves, it is easy for incomplete valve inspection to occur. If a valve is not closed or not fully closed, different concentrations of nitric acid may cross-contaminate within the pipeline, resulting in substandard quality. This not only reduces the product's market competitiveness but also negatively impacts the company's reputation.

[0005] The complex pipeline configuration and frequent valve switching increase safety hazards. Improper operation or equipment malfunction can easily lead to safety accidents.

[0006] Therefore, this application proposes a nitric acid pipeline system to improve loading speed. Utility Model Content

[0007] To overcome the shortcomings of existing technologies, this application provides a nitric acid pipeline system that improves loading speed. By setting a dual-valve control mechanism on the main delivery pipeline, the risk of misoperation that may occur when controlling with a single valve is reduced. Through the coordinated work of the two valves, the direction and flow rate of nitric acid are more precisely controlled, effectively solving the problem of incomplete inspection caused by the large number and complex distribution of valves, and preventing the cross-contamination of nitric acid of different concentrations in the pipeline, thereby ensuring product quality.

[0008] The technical solution adopted by this application to solve its technical problem is:

[0009] A nitric acid pipeline system for improving loading speed includes:

[0010] At least one first nitric acid tank has a first outlet;

[0011] At least one second nitric acid tank having a second outlet;

[0012] The main delivery pipeline connects the first outlet and the second outlet;

[0013] A dual-valve control mechanism is installed on the main delivery pipeline to control the flow direction and flow rate of nitric acid.

[0014] One or more technical solutions may also include a support mechanism for fixing the main delivery pipeline and the dual-valve control mechanism.

[0015] In one or more technical solutions, the dual-valve control mechanism includes:

[0016] The first valve is installed on the main delivery pipeline;

[0017] The second valve is installed on the main delivery pipeline, spaced apart from the first valve.

[0018] In one or more technical solutions, a detection mechanism is provided between the first valve and the second valve to monitor the pressure and flow rate in the main delivery pipeline.

[0019] In one or more technical solutions, the supporting mechanism includes:

[0020] Multiple supports are fixed below the main delivery pipe;

[0021] Several passageway ladders are installed next to the main conveying pipeline for personnel inspection and maintenance.

[0022] In one or more technical solutions, the first outlet and the second outlet are reserved interfaces; the first outlet and the second outlet are connected to the main delivery pipeline through branch pipes.

[0023] In one or more technical solutions, a third valve is provided on the branch pipe for controlling the opening and closing of the branch pipe.

[0024] In one or more technical solutions, the dual-valve control mechanism further includes: a control unit, electrically connected to the first valve and the second valve, for controlling the opening and closing states of the first valve and the second valve.

[0025] In one or more technical solutions, filters are provided on the first outlet and the second outlet respectively to filter impurities in nitric acid.

[0026] In one or more technical solutions, the main delivery pipeline is provided with multiple monitoring points, and each monitoring point is equipped with a detection mechanism, which includes a pressure sensor and a flow sensor.

[0027] The beneficial effects of this application are as follows:

[0028] The nitric acid pipeline system described in this application, which improves loading speed, effectively avoids the risk of misoperation that may be caused by a single valve by introducing the first outlet and the second outlet of the first nitric acid tank and the second nitric acid tank into the main delivery pipeline controlled by the dual-valve control mechanism, thereby improving the safety and reliability of the system.

[0029] The nitric acid pipeline system described in this application for improving loading speed includes a detection mechanism between the two valves in a dual-valve control mechanism to monitor the pressure and flow rate in the main delivery pipeline. The measured data can be transmitted to the control unit via a signal transmission line to help achieve precise control of the nitric acid delivery process. Attached Figure Description

[0030] The present application will be further described below with reference to the accompanying drawings and embodiments.

[0031] Figure 1 This is a schematic diagram of the structure of a nitric acid pipeline system for improving loading speed as described in this application;

[0032] Figure 2 This is a schematic diagram of the dual-valve control mechanism described in this application;

[0033] Figure 3 This is a schematic diagram of the material flow during operation of a nitric acid pipeline system for improving loading speed as described in this application;

[0034] The components include: 1. First nitric acid tank; 11. First outlet; 2. Second nitric acid tank; 21. Second outlet; 3. Main delivery pipeline; 4. Dual-valve control mechanism; 41. First valve; 42. Second valve; 43. Third valve; 5. Support mechanism; 51. Bracket; 52. Aisle ladder; 6. Detection mechanism; 61. Pressure sensor; 62. Flow sensor; 7. Branch pipeline; 8. Filter; 9. Air compressor pipe. Detailed Implementation

[0035] The following will clearly and completely describe the concept, specific structure, and resulting technical effects of this application in conjunction with embodiments and accompanying drawings, so as to fully understand the purpose, features, and effects of this application. Obviously, the described embodiments are only a part of the embodiments of this application, not all of them. Other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are all within the scope of protection of this application. Furthermore, all connections / linkages involved in the patent do not simply refer to direct contact between components, but rather to the ability to form a better connection structure by adding or reducing connecting accessories according to specific implementation conditions. The various technical features in this application can be combined interactively without contradicting each other.

[0036] like Figure 1 As shown, a nitric acid pipeline system for improving loading speed includes:

[0037] At least one first nitric acid tank 1 has a first outlet 11;

[0038] At least one second nitric acid tank 2, having a second outlet 21;

[0039] The main delivery pipeline 3 connects the first outlet 11 and the second outlet 21;

[0040] A dual-valve control mechanism 4 is installed on the main delivery pipeline 3 to control the flow direction and flow rate of nitric acid.

[0041] Specifically, there is a primary nitric acid tank and a secondary nitric acid tank. These serve as the main containers for nitric acid storage, storing nitric acid of different concentrations or types for loading as needed. By providing at least one primary nitric acid tank and at least one secondary nitric acid tank, sufficient nitric acid reserves are ensured, while also allowing for flexible responses to different customer needs.

[0042] More specifically, the first nitric acid tank and the second nitric acid tank can be set up according to actual needs.

[0043] The first and second outlets are located at the bottom of the first and second nitric acid tanks, respectively, and are used to discharge nitric acid from the tanks to the main delivery pipeline. The first and second outlets also provide control points to allow nitric acid to flow out as needed.

[0044] The main pipeline, connected to the first and second outlets, transports nitric acid to the loading point. This establishes an efficient transportation route, ensuring that nitric acid can be delivered to its destination quickly and reliably.

[0045] In one or more embodiments, a support mechanism 5 is also included for fixing the main delivery pipeline 3 and the dual-valve control mechanism 4.

[0046] Specifically, the support mechanism 5 includes: multiple brackets 51 fixed below the main conveying pipeline 3; and several passageway ladders 52 set beside the main conveying pipeline 3 for personnel inspection and maintenance.

[0047] Understandably, the main conveying pipe 3 is fixed to the support mechanism 5 by multiple brackets 51. The brackets 51 are connected to the main conveying pipe 3 by welding or bolts to ensure the firmness and stability of the connection. The passageway ladder 52 is set on one side of the main conveying pipe 3 and is fixed to the brackets 51 by welding or bolts.

[0048] Therefore, by installing multiple supports below the main pipeline, a stable support structure is formed, ensuring the stability of the pipeline under various operating conditions. Ladders and walkways facilitate regular inspections and maintenance by staff, ensuring the normal operation of the system and enabling the timely detection and handling of potential problems.

[0049] In one or more embodiments, the dual-valve control mechanism 4 includes:

[0050] The first valve 41 is installed on the main conveying pipeline 3;

[0051] The second valve 42 is installed on the main conveying pipeline 3, spaced apart from the first valve 41.

[0052] Specifically, by installing a dual-valve control mechanism (first valve 41 and second valve 42) on the main delivery pipeline, the flow direction and flow rate of nitric acid can be precisely controlled.

[0053] In one or more embodiments, a detection mechanism 6 is provided between the first valve 41 and the second valve 42 for monitoring the pressure and flow rate in the main delivery pipeline 3.

[0054] Specifically, the main delivery pipeline 3 is equipped with multiple monitoring points, and each monitoring point is equipped with a detection mechanism 6, which includes a pressure sensor 61 and a flow sensor 62 to monitor the pressure and flow rate in the main delivery pipeline in real time.

[0055] Therefore, by installing detection devices at key locations on the main delivery pipeline, the pressure and flow rate within the pipeline can be monitored in real time, ensuring the stability and safety of the nitric acid delivery process. This also allows for the timely detection and handling of abnormalities within the pipeline, such as valves not being fully closed or pipeline leaks, preventing production accidents caused by these issues.

[0056] In one or more embodiments, the first outlet 11 and the second outlet 21 are reserved interfaces, and the first outlet 11 and the second outlet 21 are connected to the main delivery pipeline 3 through the branch pipeline 7.

[0057] Specifically, by setting the first outlet 11 and the second outlet 21 as reserved interfaces and connecting them to the main delivery pipeline 3 through the branch pipeline 7, the system can flexibly select which nitric acid tank to load from, thus improving the system's adaptability and operational flexibility.

[0058] Specifically, a third valve 43 is provided on the branch pipe 7 to control the opening and closing of the branch pipe 7, ensuring that nitric acid is delivered according to the predetermined path and flow rate, and avoiding the mixing of nitric acid of different concentrations. By controlling the third valve 43, the branch pipe can be shut off when necessary to prevent nitric acid leakage due to unexpected situations, thereby improving system safety.

[0059] In one or more embodiments, the dual-valve control mechanism 4 further includes a control unit 44, electrically connected to the first valve 41, the second valve 42, and the second valve 43, for controlling the opening and closing states of the first valve 41, the second valve 42, and the second valve 43. The opening and closing state of each valve is automatically adjusted by the control unit 44 based on real-time monitoring data to ensure that nitric acid is delivered according to a predetermined path and flow rate.

[0060] Specifically, the control unit is usually installed in the control room or in a suitable location near the main delivery pipeline 3 for easy operation and maintenance. For example, common Siemens S7-1200 / 1500 series PLCs, Mitsubishi FX series PLCs, and Omron CP1H series PLCs can be used as control units;

[0061] Understandably, the control unit receives real-time data from pressure sensor 61 and flow sensor 62, analyzes and processes it. Based on the analysis results, it generates control commands, which are sent to the first valve 41, the second valve 42, and the third valve 43 via signal lines, automatically adjusting the opening and closing states of these valves. Through real-time monitoring and automatic control, nitric acid is ensured to be delivered according to the predetermined path and flow rate, improving the safety and reliability of the system.

[0062] The first valve 41, the second valve 42, and the third valve 43 open and close according to the instructions of the control unit, precisely controlling the flow direction and flow rate of nitric acid. By precisely controlling the opening and closing status of the valves, mixing of nitric acid of different concentrations is avoided, ensuring the stability and safety of nitric acid delivery.

[0063] In one or more embodiments, filters 8 are respectively provided on the first outlet 11 and the second outlet 21 to filter impurities in nitric acid. The filters can prevent impurities from entering subsequent conveying pipelines and equipment, reduce equipment wear and blockage caused by impurities, and extend the service life of the equipment.

[0064] In one or more embodiments, the bottom of the first nitric acid tank and the second nitric acid tank are provided with vents, and the vents are connected to a waste liquid collection device through vent pipes to discharge the residual nitric acid or the waste liquid after cleaning in the tank, so as to ensure that the tank is clean.

[0065] The first and second nitric acid tanks are equipped with exhaust ports at the top. The exhaust ports are connected to the waste gas treatment device through exhaust pipes, which can discharge the gas generated in the tanks due to temperature changes or operation, and prevent the pressure in the tanks from becoming too high.

[0066] The support structure also includes a protective cover, which is installed above the main conveying pipeline to protect the main conveying pipeline from the influence of the external environment. The protective cover can also prevent foreign objects from falling into the pipeline and reduce pipeline damage or blockage caused by external factors.

[0067] The nitric acid pipeline system also includes signage, which is installed on the supporting structure to indicate the location and function of each pipe and valve, facilitating operation and maintenance by staff.

[0068] Air compressor pipe 9 is installed at the front end of the main conveying pipeline 3 and is used to discharge the remaining nitric acid after the main conveying pipeline has been conveyed.

[0069] The process of loading nitric acid onto trucks from the first nitric acid tank.

[0070] 1. Preparation

[0071] Check valve status:

[0072] Ensure that the third valve 43 on the first outlet 11 of the first nitric acid tank 1 is closed. Ensure that the third valve 43 on the second outlet 21 of the second nitric acid tank 2 is closed. Ensure that the first valve 41 and the second valve 42 on the main delivery pipeline 3 are closed. Ensure that all detection devices 6 (including pressure sensor 61 and flow sensor 62) are functioning properly.

[0073] Check the filter:

[0074] Ensure that the filter 8 on the first outlet 11 is clean and free of blockages.

[0075] Check the exhaust port:

[0076] Ensure that the exhaust port at the top of the first nitric acid tank 1 is connected to the waste gas treatment device through an exhaust pipe, and that the exhaust pipe is unobstructed.

[0077] 2. Start the conveying process

[0078] Open the third valve 43:

[0079] The control unit issues a command to open the third valve 43 on the first outlet 11, so that the first nitric acid tank 1 is connected to the main delivery pipeline 3.

[0080] Open the first valve 41:

[0081] The control unit issues a command to open the first valve 41 on the main delivery pipeline 3, allowing nitric acid to flow from the first nitric acid tank 1 into the main delivery pipeline 3.

[0082] Monitor pressure and flow:

[0083] Pressure sensor 61 and flow sensor 62 begin to monitor the pressure and flow rate in the main delivery pipeline 3 in real time and transmit the data to the control unit.

[0084] The control unit automatically adjusts the opening of the first valve 41 and the third valve 43 based on real-time monitoring data to ensure that nitric acid is delivered according to the predetermined flow rate and path.

[0085] 3. Monitoring during the transportation process

[0086] Real-time data monitoring:

[0087] The control unit continuously receives data from pressure sensor 61 and flow sensor 62 to ensure that the pressure and flow rate in the pipeline are within a safe range.

[0088] If an abnormal situation is detected (such as excessive pressure or abnormal flow), the control unit will immediately issue an alarm and automatically adjust the valve opening or even close the relevant valve to prevent accidents from occurring.

[0089] Manual inspection:

[0090] Staff members regularly inspect the main delivery pipeline 3 and various valves via the corridor ladder 52 to ensure the system operates normally.

[0091] 4. Loading process

[0092] Connect the loading pipeline:

[0093] Connect the loading pipe to the loading port of the main delivery pipe 3, ensuring a tight and leak-free connection.

[0094] Start loading:

[0095] The control unit issues commands to adjust the opening of the first valve 41 and the third valve 43 to ensure that nitric acid flows into the loading pipeline at an appropriate flow rate for loading.

[0096] Monitor the loading process:

[0097] Real-time monitoring of pressure and flow during loading ensures safety and stability during the loading process.

[0098] If any abnormalities are found, take immediate action to stop loading and conduct an inspection.

[0099] 5. End the conveying process

[0100] Close the first valve 41:

[0101] When it is necessary to stop the supply of nitric acid, the control unit issues a command to first close the first valve 41 on the main supply pipeline 3, thereby stopping the flow of nitric acid from the first nitric acid tank 1 into the main supply pipeline 3.

[0102] Close the third valve 43:

[0103] The control unit issues a command to close the third valve 43 on the first outlet 11, cutting off the connection between the first nitric acid tank 1 and the main delivery pipeline 3.

[0104] Drain pipe:

[0105] If necessary, purge any remaining nitric acid from the main delivery pipeline 3 using compressed air to ensure the pipeline is clean. Open the valve on the compressed air pipeline and purge the nitric acid from the pipeline using compressed air.

[0106] The process of loading nitric acid onto trucks while the second nitric acid tank is in operation.

[0107] 1. Preparation

[0108] Check valve status:

[0109] Ensure that the third valve 43 on the first outlet 11 of the first nitric acid tank 1 is closed. Ensure that the third valve 43 on the second outlet 21 of the second nitric acid tank 2 is closed. Ensure that the first valve 41 and the second valve 42 on the main delivery pipeline 3 are closed. Ensure that all detection devices 6 (including pressure sensor 61 and flow sensor 62) are functioning properly.

[0110] Check the filter:

[0111] Ensure that the filter 8 on the second outlet 21 is clean and free of blockages.

[0112] Check the exhaust port:

[0113] Ensure that the exhaust port at the top of the second nitric acid tank 2 is connected to the waste gas treatment device through an exhaust pipe, and that the exhaust pipe is unobstructed.

[0114] 2. Start the conveying process

[0115] Open the third valve 43:

[0116] The control unit issues a command to open the third valve 43 on the second outlet 21, so that the second nitric acid tank 2 is connected to the main delivery pipeline 3.

[0117] Open the second valve 42:

[0118] The control unit issues a command to open the second valve 42 on the main delivery pipeline 3, allowing nitric acid to flow from the second nitric acid tank 2 into the main delivery pipeline 3.

[0119] Monitor pressure and flow:

[0120] Pressure sensor 61 and flow sensor 62 begin to monitor the pressure and flow rate in the main delivery pipeline 3 in real time and transmit the data to the control unit.

[0121] Based on real-time monitoring data, the control unit automatically adjusts the opening of the second valve 42 and the third valve 43 to ensure that nitric acid is delivered according to the predetermined flow rate and path.

[0122] 3. Monitoring during the transportation process

[0123] Real-time data monitoring:

[0124] The control unit continuously receives data from pressure sensor 61 and flow sensor 62 to ensure that the pressure and flow rate in the pipeline are within a safe range.

[0125] If an abnormal situation is detected (such as excessive pressure or abnormal flow), the control unit will immediately issue an alarm and automatically adjust the valve opening or even close the relevant valve to prevent accidents from occurring.

[0126] Manual inspection:

[0127] Staff members regularly inspect the main delivery pipeline 3 and various valves via the corridor ladder 52 to ensure the system operates normally.

[0128] 4. Loading process

[0129] Connect the loading pipeline:

[0130] Connect the loading pipe to the loading port of the main delivery pipe 3, ensuring a tight and leak-free connection.

[0131] Start loading:

[0132] The control unit issues commands to adjust the opening of the second valve 42 and the third valve 43 to ensure that nitric acid flows into the loading pipeline at an appropriate flow rate for loading.

[0133] Monitor the loading process:

[0134] Real-time monitoring of pressure and flow during loading ensures safety and stability during the loading process.

[0135] If any abnormalities are found, take immediate action to stop loading and conduct an inspection.

[0136] 5. End the conveying process

[0137] Close the second valve 42:

[0138] When it is necessary to stop the supply of nitric acid, the control unit issues a command to first close the second valve 42 on the main supply pipeline 3, thereby stopping the flow of nitric acid from the second nitric acid tank 2 into the main supply pipeline 3.

[0139] Close the third valve 43:

[0140] The control unit issues a command to close the third valve 43 on the second outlet 21, cutting off the connection between the second nitric acid tank 2 and the main delivery pipeline 3.

[0141] Drain pipe:

[0142] If necessary, the remaining nitric acid in the main delivery pipeline 3 shall be discharged through the compressed air pipe to ensure the pipeline is clean.

[0143] Open the valve on the air compressor pipe to expel the nitric acid from the pipe using compressed air.

[0144] Records and reports:

[0145] Record all data during this delivery process, including delivery time, flow rate, and pressure.

[0146] In case of any abnormal situation, record the detailed information and report it to the relevant personnel for handling.

[0147] The above is a detailed description of the preferred embodiments of this application. However, the invention of this application is not limited to the embodiments described. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of this application. All such equivalent modifications or substitutions are included within the scope defined by the claims of this application.

Claims

1. A nitric acid pipeline system for improving loading speed, characterized in that, include: At least one first nitric acid tank (1) has a first outlet (11); At least one second nitric acid tank (2) having a second outlet (21); The main delivery pipeline (3) is connected to the first outlet (11) and the second outlet (21); A dual-valve control mechanism (4) is installed on the main delivery pipeline (3) to control the flow direction and flow rate of nitric acid.

2. The nitric acid pipeline system according to claim 1, characterized in that, It also includes a support mechanism (5) for fixing the main delivery pipeline (3) and the dual-valve control mechanism (4).

3. The nitric acid pipeline system according to claim 1, characterized in that, The dual-valve control mechanism (4) includes: The first valve (41) is installed on the main delivery pipeline (3); The second valve (42) is installed on the main conveying pipeline (3) and is spaced apart from the first valve (41).

4. The nitric acid pipeline system according to claim 3, characterized in that, A detection mechanism (6) is provided between the first valve (41) and the second valve (42) for monitoring the pressure and flow rate in the main delivery pipeline (3).

5. The nitric acid pipeline system according to claim 2, characterized in that, The support mechanism (5) includes: Multiple supports (51) are fixed below the main delivery pipe (3); Several passageway ladders (52) are set up next to the main conveying pipeline (3) for personnel inspection and maintenance.

6. The nitric acid pipeline system according to claim 1, characterized in that, The first outlet (11) and the second outlet (21) are reserved interfaces; the first outlet (11) and the second outlet (21) are connected to the main conveying pipeline (3) through branch pipelines (7).

7. The nitric acid pipeline system according to claim 6, characterized in that, The branch pipe (7) is equipped with a third valve (43) for controlling the opening and closing of the branch pipe (7).

8. The nitric acid pipeline system according to claim 3, characterized in that, The dual-valve control mechanism (4) further includes a control unit (44), which is electrically connected to the first valve (41) and the second valve (42) and is used to control the opening and closing states of the first valve (41) and the second valve (42).

9. The nitric acid pipeline system according to claim 1, characterized in that, The first outlet (11) and the second outlet (21) are respectively equipped with filters (8) for filtering impurities in nitric acid.

10. The nitric acid pipeline system according to claim 1, characterized in that, The main delivery pipeline (3) is equipped with multiple monitoring points, and each monitoring point is equipped with a detection mechanism (6), which includes a pressure sensor (61) and a flow sensor (62).

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