Chemical library fire accident wastewater automatic control and collection system

Abstract

The application discloses a kind of chemical warehouse fire accident wastewater automatic control and collection system, mainly including electrical control cabinet, fire accident wastewater signal detection well, fire wastewater ditch, outdoor wastewater pipeline, wastewater diversion well, accident pool.It is characterized by: electrical control cabinet receives fire accident wastewater signal detection well signal, automatically controls and opens and closes different electric valves in the wastewater diversion well connected with outdoor wastewater pipeline, outdoor rainwater pipeline, accident pool;Normal working condition, the valve on the side of accident pool in wastewater diversion well is closed, the valve on the side of rainwater pipe is opened, fire condition, the valve on the side of accident pool in wastewater diversion well is opened, the valve on the side of rainwater pipe is closed.The application solves the safety problems that chemical warehouse fire accident wastewater collection system needs manual switching of valve in diversion well, causes heavy amount of repeated labor, cannot guarantee timely switching, etc.At the same time, system composition and working principle are simple, easy to construction installation, easy to large-scale use and popularization.

Description

Technical Field

[0001] This invention belongs to the field of drainage technology. Specifically, this invention relates to an automated control and collection system for fire-fighting wastewater from a chemical warehouse. Background Technology

[0002] The booming development of my country's semiconductor and other electronics industries has led to the timely construction of numerous electronics industrial projects. As is well known, each electronics industrial project requires a separate building for storing auxiliary production chemicals, known as a chemical warehouse. These warehouses store large quantities of hazardous chemicals. For safety reasons, dikes are typically erected within the warehouse to prevent chemical leaks outside the protected area and subsequent environmental pollution. This method has been proven effective in China for many years. However, in the event of a fire in the chemical warehouse, various fire extinguishing facilities (especially water-based fire suppression systems) may release large amounts of liquid for firefighting. This could potentially cause a large amount of fire-fighting wastewater mixed with hazardous chemical waste to overflow from the warehouse's protected area, entering nearby soil and water bodies, causing serious environmental pollution incidents, and possibly posing health risks to the public.

[0003] Traditional chemical warehouse fire emergency wastewater collection systems employ two control methods: one is manual control of ordinary valves within the wastewater diversion well, and the other is manual control of electric valves from a control room. Currently, in chemical warehouse fire emergency wastewater collection systems, the valves in the wastewater diversion well require that, during sunny weather, the valve on the rainwater pipeline side be normally closed and the valve on the emergency water tank side be normally open; during rainy weather, the valve on the rainwater pipeline side be open and the valve on the emergency water tank side be closed. Due to the uncertainty of rainfall and the inherent dangers of chemical warehouses, 24-hour monitoring of the system is necessary. However, in reality, chemical warehouses often lack dedicated monitoring personnel, making it difficult to promptly switch valves within the wastewater diversion well during rainfall or fires, potentially leading to safety incidents. This invention utilizes the buoyancy of the water in the fire emergency wastewater signal detection well, employing a simple float valve principle as the feedback signal to the electrical control cabinet. The electrical control cabinet directly controls the transition of the two valves within the wastewater diversion well from normal operating conditions to fire emergency operating conditions. This invention is simple in principle, has a low failure rate, and requires virtually no manual operation, achieving fully automated control. It ensures that chemical storage facilities will not suffer from the hazards of unorganized runoff of wastewater during firefighting operations, and has great application prospects. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides an automated control and collection system for fire-fighting wastewater from chemical warehouses. The aim is to resolve the unsafe control factors present in the current operation of chemical warehouse fire-fighting wastewater collection systems, while also saving labor.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: an automated control and collection system for fire-fighting wastewater in a chemical warehouse, mainly comprising an electrical control cabinet (01), a fire-fighting wastewater signal detection well (02), a fire-fighting wastewater ditch (03), an outdoor wastewater pipeline (04), a wastewater diversion well (05), an emergency water tank (06), an outdoor rainwater pipeline (07), a water grate (08), a liquid level signal valve (09), an electric valve (10) on the side of the emergency water tank, an electric valve (11) on the side of the rainwater pipeline, and a fire control room (12); wherein, the electrical control cabinet (01) is placed in a dedicated room in the chemical warehouse, the fire-fighting wastewater signal detection well (2) is set in the public area of ​​the chemical storage area, a water grate (08) is installed at the wellhead of the fire-fighting wastewater signal detection well (2), and a liquid level signal valve (09) is installed inside the well. The electrical control cabinet (01) receives the signal from the fire accident wastewater signal detection well (2) and automatically controls the opening of different electric valves in the wastewater diversion well (05). At the same time, it feeds back the signal to the fire control room (12). The outdoor wastewater ditch (03) is set up around the chemical warehouse. The outdoor wastewater ditch (03), the outdoor wastewater pipeline (04), the wastewater diversion well (05), the emergency water tank (06), and the outdoor rainwater pipeline (07) together form a chemical warehouse fire accident wastewater collection system. The outdoor wastewater ditch (03), the outdoor wastewater pipeline (04), the wastewater diversion well (05), and the emergency water tank (06) are connected in series. The outdoor rainwater pipeline (07) is connected to the side of the wastewater diversion well (05). The wastewater diversion well (05) is equipped with an electric valve (10) on the side of the emergency water tank and an electric valve (11) on the side of the rainwater pipeline.

[0006] The present invention discloses an automated control and collection system for fire-fighting wastewater in a chemical warehouse. The fire-fighting wastewater signal detection well (02) is a prefabricated integrated well chamber made of materials including but not limited to plastic, and is equipped with a liquid level signal valve (09).

[0007] The present invention discloses an automated control and collection system for fire-fighting wastewater in a chemical warehouse. The fire-fighting wastewater ditch (03) is a prefabricated integrated wastewater ditch made of materials including but not limited to plastic, and waterproof measures are taken.

[0008] The present invention discloses an automated control and collection system for fire-fighting wastewater in a chemical warehouse. The wastewater diversion well (05) is a prefabricated integrated well chamber made of materials including but not limited to plastic, with waterproof measures in place. It is equipped with two sets of electric valves, one set located on one side of the emergency water tank (06) and the other set located on one side of the rainwater pipeline (07).

[0009] The present invention discloses an automated control and collection system for fire-fighting wastewater in a chemical warehouse, wherein the float ball of the liquid level signal valve (09) is made of lightweight plastic and is flexibly connected to the well wall.

[0010] The present invention discloses an automated control and collection system for fire-fighting wastewater in a chemical warehouse, which has two operating conditions: normal operating condition and fire-fighting operating condition.

[0011] The automatic control and collection system for fire-fighting wastewater in a chemical warehouse, as described in this invention, operates under normal conditions during periods without fire. At this time, the fire-fighting wastewater signal detection well (02) of the automatic control and collection system is empty, the level signal valve (09) is at a low position, the electric valve (10) on the emergency water tank side of the wastewater diversion well (05) is normally closed, and the electric valve (11) on the rainwater pipeline side is normally open. The entire automatic control and collection system for fire-fighting wastewater in a chemical warehouse only functions to discharge rainwater around the chemical warehouse.

[0012] The present invention describes an automated control and collection system for fire-fighting wastewater in a chemical warehouse, wherein the fire-fighting operation occurs during the period of a fire. After a fire occurs, due to the activation of fire hydrants, automatic sprinkler systems, and other systems in the chemical warehouse, a large amount of fire-fighting wastewater will be generated on the ground in a short period of time. This fire-fighting wastewater will first flow through the grate (08) into the fire-fighting wastewater signal detection well (02) located in the public area of ​​the chemical storage area. As the water level in the fire-fighting wastewater signal detection well (02) rises, the level signal valve (09) located in the fire-fighting wastewater signal detection well (02) will eventually float to the top of the detection well and connect with the grate (08) within the design time. At this time, the level signal valve (09) sends a signal to the electrical control cabinet (01). After receiving the signal, the electrical control cabinet (01) immediately instructs the electric valve in the wastewater diversion well (05) to enter the fire-fighting operation, that is, the electric valve (10) on the side of the emergency water tank opens and the electric valve (11) on the side of the rainwater pipeline closes, and at the same time, the signal is fed back to the fire control room (12). Ultimately, if the fire continues and fire-fighting wastewater overflows from the chemical warehouse, it can be collected by the outdoor wastewater ditch (03) located around the chemical warehouse, and then flow through the outdoor wastewater pipeline (04) and wastewater diversion well (05) into the emergency water tank (06), thus preventing the dangerous consequence of the emergency wastewater flowing into the outdoor rainwater pipe (07).

[0013] The automated control and collection system for fire-fighting wastewater in a chemical warehouse, as described in this invention, has a fire-fighting wastewater signal detection well (02) as its core technology. Utilizing the well-known principle of liquid level control, a feedback signal is sent to the electrical control cabinet (01) during fire-fighting operations. The electrical control cabinet (01) then controls the opening and closing of the valves in the wastewater diversion well (05), achieving the effect of promptly opening the electric valve (10) on the emergency water tank side and closing the electric valve (11) on the rainwater pipeline side during fire-fighting operations.

[0014] The present invention provides an automated control and collection system for fire-fighting wastewater in a chemical warehouse. The chemical warehouse has the following requirements: First, a water-blocking threshold is set to prevent chemical waste liquid and fire-fighting wastewater from overflowing the chemical warehouse at the first time; Second, the ground slopes towards the fire-fighting wastewater signal detection well (02) to facilitate the flow of ground fire-fighting wastewater into the well at the first time.

[0015] The automated control and collection system for fire-fighting wastewater in a chemical warehouse described in this invention does not automatically close the electric valve (10) on the emergency water tank side and open the electric valve (11) on the rainwater pipeline side after a fire-fighting incident. This is not because this function is impossible, but for safety reasons, after the management personnel confirm that the fire has been completely extinguished, the working status of the electric valve in the wastewater diversion well is adjusted manually in the fire control room (12), or the working status of the electric valve is adjusted manually in the wastewater diversion well. After the fire-fighting incident ends, the fire-fighting wastewater stored in the fire-fighting wastewater signal detection well (02) is pumped into the emergency water tank (06) or analyzed for water quality using a mobile pump. The liquid level signal valve (09) then drops, returning to normal operating conditions.

[0016] The present invention discloses an automated control and collection system for fire-fighting wastewater in a chemical warehouse. The system includes a control function in the fire control room (12) to manually open the electric valve (10) on the side of the emergency water tank and close the electric valve (11) on the side of the rainwater pipeline. If, 10 minutes after the fire control room (12) issues an alarm signal, no feedback signal is received from the electrical control cabinet (01) of the chemical warehouse, the alarm will remind the on-duty personnel in the fire control room (12) to manually control the automated control and collection system for fire-fighting wastewater to enter fire-fighting operation mode. Alternatively, the working status of the electric valve can be manually adjusted on-site in the wastewater diversion well (05).

[0017] The automated control and collection system for fire-fighting wastewater in chemical warehouses described in this invention has the following advantages: the entire system has a simple principle, no complex mechanical structure, and is easy to adopt and construct; it requires virtually no human intervention and can completely ensure the collection of fire-fighting wastewater without causing environmental pollution accidents. Attached Figure Description

[0018] Figure 1 This is the flow control diagram of the present invention;

[0019] Figure 2 This is a system schematic diagram of the present invention;

[0020] Figure 3 This is a plan view of the present invention;

[0021] Figure 4 This is a schematic diagram of the split structure of the core components of this invention;

[0022] In the figure, (01) electrical control cabinet; (02) fire accident wastewater signal detection well; (03) fire wastewater ditch; (04) outdoor wastewater pipeline; (05) wastewater diversion well; (06) accident water tank; (07) outdoor rainwater pipeline; (08) water grate; (09) liquid level control valve; (10) electric valve on the side of accident water tank; (11) electric valve on the side of rainwater pipeline; (12) fire control room. Detailed Implementation

[0023] This invention provides an automated control and collection system for fire-fighting wastewater from chemical warehouses. To make the objectives, technical solutions, and effects of this invention clearer and more explicit, the invention will be further described in detail below with reference to the accompanying drawings.

[0024] Please see Figure 3 and Figure 4 This example provides an automated control and collection system for fire-fighting wastewater in a chemical warehouse, which mainly includes an electrical control cabinet (01), a fire-fighting wastewater signal detection well (02), a fire-fighting wastewater ditch (03), an outdoor wastewater pipeline (04), a wastewater diversion well (05), an emergency water tank (06), an outdoor rainwater pipeline (07), a water grate (08), a liquid level signal valve (09), an electric valve on the side of the emergency water tank (10), and an electric valve on the side of the rainwater pipeline (11). The electrical control cabinet (01) is placed in a dedicated room in the chemical warehouse, the fire-fighting wastewater signal detection well (2) is set in the public area of ​​the chemical storage area, a water grate (08) is set at the wellhead of the fire-fighting wastewater signal detection well (2), and a liquid level signal valve (09) is set inside the well. The electrical control cabinet (01) receives the signal from the fire-fighting wastewater signal detection well (2), automatically controls the opening of different electric valves in the wastewater diversion well (05), and simultaneously feeds the signal back to the fire control room (12). An outdoor wastewater ditch (03) is set up around the chemical warehouse. The outdoor wastewater ditch (03), outdoor wastewater pipeline (04), wastewater diversion well (05), emergency water tank (06), and outdoor rainwater pipeline (07) together form a chemical warehouse fire emergency wastewater collection system. The outdoor wastewater ditch (03), outdoor wastewater pipeline (04), wastewater diversion well (05), and emergency water tank (06) are connected in series. The outdoor rainwater pipeline (07) is connected to the wastewater diversion well (05) on the side. An electric valve (10) on the side of the emergency water tank and an electric valve (11) on the side of the rainwater pipeline are respectively installed in the wastewater diversion well (05).

[0025] Please see Figure 3 and Figure 4 In this example, the electrical control cabinet (01) is a standard electrical control cabinet.

[0026] Please see Figure 3 and Figure 4In this example, the fire accident wastewater signal detection well (02) is a rectangular well chamber with effective part dimensions L×B×H=1700mm×1000mm×1000mm. After removing the invalid part, it stores the water output of a single fire hydrant for 5 minutes.

[0027] Please see Figure 3 and Figure 4 In this example, a water grate (08) is installed at the wellhead of the fire accident wastewater signal detection well (02), with L×B=1750mm×1050mm; a liquid level signal valve (09) is installed under the water grate (08).

[0028] Please see Figure 3 and Figure 4 In this example, the fire accident wastewater signal detection well (02) is made of plastic, and the water grate (08) is made of cast iron.

[0029] Please see Figure 3 and Figure 4 In this example, the float ball of the liquid level signal valve (09) in the fire accident wastewater signal detection well (02) is made of lightweight plastic and is flexibly connected to the well wall.

[0030] Please see Figure 3 and Figure 4 In this example, the fire wastewater ditch (03) is made of prefabricated linear drainage ditch and plastic material.

[0031] Please see Figure 3 and Figure 4 In this example, the outdoor wastewater pipeline (04) and the outdoor rainwater pipeline (07) are made of HDPE plastic pipes, and the corresponding well chambers are plastic wells.

[0032] Please see Figure 3 and Figure 4 In this example, the wastewater diversion well (05) is connected to three pipelines, namely the outdoor wastewater pipeline (04), the outdoor rainwater pipeline (07), and the wastewater pipeline connected to the emergency water tank (06).

[0033] Please see Figure 3 and Figure 4 In this example, the wastewater diversion well (05) is equipped with electric valves on both the side of the emergency water tank (06) and the side of the outdoor rainwater pipeline (07).

[0034] Please see Figure 3 and Figure 4 In this example, the wastewater diversion well (05) is made of plastic, modularly assembled, and waterproofed.

[0035] Please see Figure 1 and Figure 2In this example, the electrical control cabinet (01), the fire control room (12), and the fire accident wastewater signal detection well (02) are connected by a low-voltage signal line, and the electrical control cabinet (01) and the electric valve in the wastewater diversion well (05) are connected by strong and weak voltage wires.

[0036] This example describes an automated control and collection system for fire-fighting wastewater from a chemical warehouse, which operates in two modes: normal operating mode and fire-fighting operating mode.

[0037] The automated control and collection system for fire-fighting wastewater in a chemical warehouse described in this example operates under normal conditions during periods without fire. At this time, the fire-fighting wastewater signal detection well (02) of the automated control and collection system is empty, the level signal valve (09) is at a low position, the electric valve (10) on the emergency water tank side of the wastewater diversion well (05) is normally closed, and the electric valve (11) on the rainwater pipeline side is normally open. The entire automated control and collection system for fire-fighting wastewater in a chemical warehouse only functions to discharge rainwater around the chemical warehouse. For details, please refer to [link / reference needed]. Figure 1 and Figure 2 and Figure 3 .

[0038] This example describes an automated control and collection system for fire-fighting wastewater in a chemical warehouse. The fire-fighting operation described therein occurs during the fire. After the fire breaks out, the fire hydrants and automatic sprinkler systems in the chemical warehouse start working, and a large amount of fire-fighting wastewater is generated on the ground in a short time. This fire-fighting wastewater will first flow through the grate (08) into the fire-fighting wastewater signal detection well (02) located in the public area of ​​the chemical storage area. As the water level in the fire-fighting wastewater signal detection well (02) rises, the level signal valve (09) located in the fire-fighting wastewater signal detection well (02) will eventually float to the top of the detection well and connect with the grate (08) within the design time. At this time, the level signal valve (09) sends a signal to the electrical control cabinet (01). After receiving the signal, the electrical control cabinet (01) immediately instructs the electric valve in the wastewater diversion well (05) to enter the fire-fighting operation, that is, the electric valve (10) on the side of the emergency water tank opens and the electric valve (11) on the side of the rainwater pipeline closes, and at the same time, the signal is fed back to the fire control room (12). Ultimately, if the fire continues and fire-fighting wastewater overflows from the chemical warehouse, it will be collected by the outdoor wastewater ditch (03) located around the chemical warehouse, passed through the outdoor wastewater pipeline (04) and wastewater diversion well (05), and finally enter the emergency water tank (06), preventing the dangerous consequence of emergency wastewater flowing into the outdoor rainwater pipe (07). Please refer to the following for details. Figure 1 and Figure 2 and Figure 3 .

[0039] The automated control and collection system for fire-fighting wastewater in a chemical warehouse described in this example has the following requirements for the chemical warehouse: First, a water-blocking threshold is set to prevent chemical waste liquid and fire-fighting wastewater from overflowing the chemical warehouse at the first time; Second, the ground slopes towards the fire-fighting wastewater signal detection well (02) to facilitate the flow of ground fire-fighting wastewater into the well at the first time.

[0040] The automated control and collection system for fire-fighting wastewater in the chemical warehouse described in this example does not automatically close the electric valve (10) on the emergency water tank side and open the electric valve (11) on the rainwater pipeline side after a fire-fighting incident. This is not because this function is impossible, but for safety reasons, after the management personnel confirm that the fire has been completely extinguished, the working status of the electric valve in the wastewater diversion well is manually adjusted in the control room, or the working status of the electric valve is manually adjusted directly in the wastewater diversion well. After the fire-fighting incident ends, the fire-fighting wastewater stored in the fire-fighting wastewater signal detection well (02) is pumped into the emergency water tank (06) or analyzed for water quality using a mobile pump. The liquid level signal valve (09) then drops, returning to normal operating conditions.

[0041] This example describes an automated control and collection system for fire-related wastewater from a chemical warehouse. The fire control room (12) is equipped with manual control functions to open the electric valve (10) on the side of the emergency water tank and close the electric valve (11) on the side of the rainwater pipeline. If, 10 minutes after the fire control room (12) issues an alarm signal, no feedback signal is received from the chemical warehouse electrical control cabinet (01), the alarm will alert the on-duty personnel in the fire control room (12) to manually control the automated control and collection system for fire-related wastewater to enter fire-fighting mode. Alternatively, the operating status of the electric valves can be manually adjusted on-site in the wastewater diversion well (05).

[0042] It is understood that those skilled in the art can make equivalent substitutions or modifications to the technical solutions and concepts of the present invention, and all such modifications or substitutions should fall within the protection scope of the present invention.

Claims

1. A chemical library fire accident wastewater automatic control and collection system, mainly comprising an electrical control cabinet (01), a fire accident wastewater signal detection well (02), a fire wastewater ditch (03), an outdoor wastewater pipeline (04), a wastewater diversion well (05), an accident pool (06), and an outdoor rainwater pipeline (07); characterized in that: The electrical control cabinet (01) is placed in a room dedicated to the chemical warehouse, the fire accident wastewater signal detection well (02) is arranged in a public area of a chemical storage site, the electrical control cabinet (01) receives a signal of the fire accident wastewater signal detection well (02), automatically controls opening of different electric valves in the wastewater diversion well (05), and simultaneously feeds back the signal to a fire control room (12), the fire wastewater ditch (03) is arranged around the chemical warehouse, and the fire wastewater ditch (03), the outdoor wastewater pipeline (04), the wastewater diversion well (05), the accident water pool (06) and the outdoor rainwater pipeline (07) jointly form a set of a chemical warehouse fire accident wastewater collection system, wherein the fire wastewater ditch (03), the outdoor wastewater pipeline (04), the wastewater diversion well (05) and the accident water pool (06) are connected in series, and the outdoor rainwater pipeline (07) is connected with the wastewater diversion well (05) on a side of the wastewater diversion well (05).

2. A chemical bank fire accident wastewater automatic control and collection system according to claim 1, characterized in that: The fire accident wastewater signal detection well (02) is a finished integrated well chamber, and a material thereof includes but is not limited to plastic, and a liquid level signal valve is arranged in the fire accident wastewater signal detection well (02).

3. A chemical bank fire accident wastewater automatic control and collection system according to claim 1, characterized in that: The wastewater diversion well (05) is a finished integrated well chamber, and a material thereof includes but is not limited to plastic, and two groups of electric valves are arranged in the wastewater diversion well (05), one group of the electric valves is arranged on one side of the accident water pool (06), and the other group of the electric valves is arranged on one side of the rainwater pipeline (07).

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