Mobile high pressure water injection unit

Abstract

The utility model discloses a mobile high pressure water injection device. Including power and control part, water storage part, pump unit part and pipeline and valve part. Power and control part is by power input interface, control cabinet or distribution box, liquid level sensor and pressure sensor constitute, is used for to pump unit start -stop and working condition control, water storage part includes water storage tank and fire water inlet, and water storage tank water outlet communicates with pump unit import through pump import pipeline, pump unit part is by vertical multistage centrifugal pump and drive electric machine constitute, and import links with pump import pipeline, and export links with pump export pipeline, pipeline and valve part includes pressure sensor, check valve, water outlet valve, quick -operation joint, water outlet hose and tank car interface, and constitutes water injection access in proper order. The device structure is compact, and the integration level is high, can provide the high pressure water flow of continuous stability fast, realizes the safe water injection exhaust of liquefied gas tank car, reduces the accident risk, promotes the rescue efficiency and reliability.

Description

Technical Field

[0001] This application relates to the field of emergency rescue equipment technology, and specifically to a mobile high-pressure water injection device. Background Technology

[0002] Liquefied gas tank trucks are primarily used to transport flammable and explosive media such as liquefied petroleum gas (LPG) and liquefied natural gas (LNG). Due to the uncertainties involved in transportation, including long-distance road travel, complex traffic environments, and variable weather conditions, collisions, rollovers, or leaks involving LPG tank trucks can easily pose serious safety risks. Leaked liquefied gas will rapidly vaporize at normal temperature and pressure, forming a flammable mixture that can explode and fire upon contact with open flames or static electricity, posing a significant threat to rescue personnel and the surrounding environment.

[0003] Among existing emergency response methods, injecting high-pressure water into the tanker truck is a recognized effective measure. Injecting water occupies internal space within the tanker, pushing out and releasing the gaseous portion, thereby reducing internal pressure and the concentration of flammable gases, and minimizing the risk of explosion. Simultaneously, the high-pressure water flow can also dilute leaks at the site of external leakage to some extent, providing supplementary relief for small-scale leaks that have already occurred. For tankers that are overturned but have not yet leaked, injecting water can also increase their weight and stability, reducing the possibility of secondary accidents.

[0004] However, existing water injection methods generally suffer from problems such as dispersed equipment and low efficiency. In most rescue operations, multiple sets of equipment, including fire trucks, independent high-pressure pumps, power units, control valves, and long-distance hoses, are typically required, and these are then temporarily assembled and connected upon arrival at the scene. This type of operation is time-consuming and detrimental to the golden time for emergency response. Especially in the early stages of liquefied gas leaks, if the gas phase pressure cannot be effectively reduced in a short period of time, it can easily lead to an explosion.

[0005] Secondly, traditional fire pumps or ordinary water pumps have limited operating pressure, often making it difficult to overcome the high pressure inside the tanker truck, resulting in insufficient water injection efficiency. Although some pump units can provide a certain pressure, they cannot guarantee a continuous and stable output, exhibiting large fluctuations and frequent shutdowns, making it difficult to meet the actual needs at liquefied gas tanker truck accident sites.

[0006] Furthermore, in terms of operation, traditional equipment requires multiple rescuers to work together to connect the water source, start the pump unit, adjust valves, and lay hoses. The operation is complex and prone to errors due to on-site tension and poor communication, thus increasing the risk of rescue. The lack of unified control and automatic protection measures among the equipment means that insufficient water storage or abnormal outlet pressure can easily lead to pump idling, overload, or even damage, further impacting the rescue progress.

[0007] Furthermore, existing equipment typically lacks a quick-connect mechanism specifically designed for liquefied gas tanker truck interfaces. Rescue personnel must perform flange connections or temporary modifications at the tanker truck interfaces, which is time-consuming and prone to issues such as loose connections, leaks, or detachment, compromising safety.

[0008] Therefore, existing technologies still have the following shortcomings in emergency water injection and venting of liquefied gas tank trucks: The equipment is scattered, requiring multi-vehicle coordinated transportation and temporary assembly, resulting in slow response times; Ordinary pumps have insufficient pressure and flow, making it difficult to continuously and stably output high-pressure water flow; The lack of automatic detection and protection functions poses a risk of pump unit damage and operational errors. The inconvenience of connecting the water outlet and the time-consuming process at the tank truck interface affect emergency efficiency. The overall device has poor mobility, is complex to operate, and lacks safety.

[0009] Therefore, there is an urgent need for a highly integrated mobile skid-mounted device that includes a power supply and control system, a water storage tank and a high-pressure pump unit, and is equipped with necessary valves, sensors, and quick-connect interfaces. This device should be able to be rapidly deployed at the accident site, provide a stable high-pressure water flow, automatically protect operational safety, and ensure a reliable connection with the liquefied gas tanker interface, thereby improving the efficiency and safety of the overall emergency response. Utility Model Content

[0010] To achieve the above objectives, this application proposes a mobile high-pressure water injection device, comprising a power supply and control section, a water storage section, a pump unit section, and a pipeline and valve section. The power supply and control section includes a power input interface, a control cabinet or distribution box, a liquid level sensor, and a pressure sensor. The power input interface is electrically connected to the control cabinet or distribution box. The liquid level sensor is disposed in the water storage section and electrically connected to the control cabinet or distribution box. The pressure sensor is disposed on the pump outlet pipeline and electrically connected to the control cabinet or distribution box. The water storage section includes a water storage tank and a water inlet interface connected to an external fire water source. The outlet of the water storage tank is connected to the inlet of the pump unit through a pump inlet pipe. The pressure sensor is installed between the outlet of the water storage tank and the pump inlet pipe. The control cabinet or distribution box adjusts the high-pressure water pump motor according to the signal of the pressure sensor to reduce gas accumulation. The pump unit includes a high-pressure water pump motor, the inlet of which is connected to the pump inlet pipeline, and the outlet of which is connected to the pump outlet pipeline. The piping and valve components include a check valve, an outlet valve, a quick connector, an outlet hose, and a tank truck interface. The check valve and the outlet valve are sequentially installed on the pump outlet pipe. The two outlet valves and one check valve are arranged in a redundant control configuration. The quick connector is connected to the outlet hose, and the end of the outlet hose is connected to the tank truck interface. The pump outlet pipe and the pump inlet pipe are arranged in a straight line to reduce pipe bends and pressure loss. The control cabinet or distribution box controls the start-up, shutdown, and working status of the pump unit based on the signals from the liquid level sensor and the pressure sensor, thereby enabling high-pressure water injection operations for the liquefied gas tanker.

[0011] In one embodiment, the water tank is a structure made of stainless steel.

[0012] In one embodiment, the control cabinet includes a liquid level display, a pressure display, a pump operation indicator, a pump fault indicator, and manual start, automatic start, and stop buttons.

[0013] In one embodiment, the pump unit is a vertical multistage centrifugal pump with an inlet and outlet diameter of DN65.

[0014] In one embodiment, the pump outlet pipeline includes a pressure sensor, a check valve, and a water outlet valve, which are arranged in sequence.

[0015] In one embodiment, the quick connector is a large-diameter quick-connect connector, which can be quickly attached and detached from the water outlet hose.

[0016] In one embodiment, the end of the water outlet hose is provided with a tank truck interface for reliable connection with the water inlet of the liquefied gas tank truck.

[0017] In one embodiment, the fire water inlet has an interface specification of DN65 for connecting to a fire hose.

[0018] One or more technical solutions proposed in this application have at least the following technical effects: First, this device achieves a high degree of integration. The power input interface, power distribution control unit, water storage tank, level detection, pressure detection, high-pressure pump unit, pipeline valves, and quick-connect device at the water outlet are all mounted on a single platform, forming a unit that can be transported as a whole. During rescue operations, no complex on-site assembly is required; simply connecting to a power source and an external fire hydrant allows for rapid startup and operation, significantly reducing deployment time and meeting the "every second counts" requirement in emergency rescue.

[0019] Secondly, this device can provide a continuous and stable high-pressure water flow. Utilizing a vertical multistage centrifugal pump as the high-pressure pump unit, coupled with a dedicated motor drive, it can continuously output water at rated power that exceeds the pressure inside the tanker truck, ensuring a smooth and reliable water injection process. Compared to ordinary fire pumps, this device has a higher pump outlet pressure and better operational stability, effectively displacing the gaseous space within the tanker truck and reducing the risk of explosion.

[0020] Third, this device is equipped with comprehensive monitoring and protection functions. The water storage tank is equipped with a level sensor and level display, which can monitor water level changes in real time. When the water level is too low, it automatically sends a signal and stops the pump, preventing damage from dry running. The pump outlet pipeline is equipped with a pressure sensor and pressure display, which can monitor the outlet pressure in real time. The control cabinet uses the feedback signal to control the start and stop of the pump unit and maintain constant pressure operation, ensuring both safety and improved water injection efficiency. Operators can intuitively understand the equipment status through the start / stop buttons, indicator lights, and display instruments on the control cabinet; operation is simple and highly reliable.

[0021] Fourth, the piping design of this device balances safety and convenience. A check valve and a discharge valve are sequentially installed on the pump outlet pipe to prevent backflow and facilitate manual control; quick-connect couplings work with the discharge hose, making on-site pipe pulling and connection more efficient; the end tank truck interface can quickly and securely seal with the tank truck's tank body interface, ensuring a secure and safe operation and effectively preventing water leakage or hose detachment due to loose connections.

[0022] Fifth, this device has significant advantages in terms of safety. Through multiple measures such as level protection, pressure protection, and check valve protection, it can prevent equipment failure and secondary risks caused by operational errors or environmental changes. The pump unit always operates under safe conditions, avoiding overload or idling, greatly improving equipment lifespan and reliability. Simultaneously, the control system has both manual and automatic operating modes, allowing for manual intervention in emergencies and automatic control during normal operation, ensuring the safety and stability of the rescue process.

[0023] Sixth, this device has good mobility and adaptability. Its skid-mounted design allows for direct loading or hoisting by transport vehicles, enabling rapid positioning and use upon arrival at the site. It can be quickly deployed in urban roads, rural highways, or complex terrain environments, demonstrating strong adaptability and significantly improving accident rescue efficiency.

[0024] Through the above design, this utility model enables rapid, safe, and stable water injection and venting operations after an LPG tanker accident, effectively reducing the risk of combustion and explosion at the accident site, protecting the safety of rescue personnel and surrounding residents, and minimizing accident losses. Compared with existing technologies, this utility model not only improves the efficiency and reliability of water injection operations but also balances ease of operation and system safety, possessing outstanding practical value and promotional significance. Attached Figure Description

[0025] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0026] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 This is a schematic diagram of the overall structure of the mobile high-pressure water injection device of this application; Figure 2 This is a schematic diagram of the pipeline system of the mobile high-pressure water injection device of this application; Figure 3 This is a detailed layout and configuration diagram of the mobile high-pressure water injection device of this application; Figure 4 This is a schematic diagram illustrating the application scenario of the mobile high-pressure water injection device of this application.

[0028] Attached reference numerals: Socket 1, Pressure Indicator 2, Liquid Level Indicator 3, Liquid Level Sensor 4, High-Pressure Water Pump Motor 5, Pressure Sensor 6, Water Storage Tank 7, Check Valve 8, Water Outlet Pipeline 9, Pump Outlet Pipeline 10, Pump Inlet Pipeline 11, Water Outlet Valve 12, Water Storage Tank Outlet 13, Fire Water Inlet 14, Control Cabinet 15, High-Pressure Water Pump Motor 16, Pressure Sensor 17, Quick Connector 18, Water Outlet Hose 19, Tank Truck Interface 20, Water Outlet Valve 21, Pump Outlet Pipeline 22, Distribution Box 23, Fire Water Interface 24, Distribution Box 25, and Water Injection Pump 26.

[0029] The purpose, features, and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0030] It should be understood that the specific embodiments described herein are merely illustrative of the technical solutions of this application and are not intended to limit this application.

[0031] To further facilitate understanding of the application of this utility model, the following supplementary explanations of the three embodiments are provided in conjunction with specific implementation scenarios, respectively demonstrating the application details and implementation logic of the technical solution of this utility model in different deployment environments.

[0032] like Figures 1 to 4 As shown, this utility model discloses a mobile high-pressure water injection device comprising a power supply and control unit, a water storage unit, a pump unit, and pipelines and valves. All components are mounted on the same platform, forming a mobile skid-mounted structure that can quickly reach the scene and be immediately put into use in the event of a liquefied gas tanker leak, overturning, or other accident.

[0033] The power supply and control section includes a socket 1, control cabinet 15, distribution box 23, distribution box 25, level indicator 3, level sensor 4, pressure indicator 2, pressure sensor 6, and pressure sensor 17. Socket 1 is a 380V three-phase AC power interface, connected to an external power supply. Power enters through socket 1 and is distributed to control cabinet 15 or distribution box 23 / 25 to control the start and stop of the pump unit. Level sensor 4 is installed inside water tank 7 to detect the water level and is electrically connected to level indicator 3, which is mounted on the device panel to visually display the water level in water tank 7. Pressure sensor 6 is installed on pump outlet pipe 10, and pressure sensor 17 is installed on pump outlet pipe 22. Both are electrically connected to pressure indicator 2 and control cabinet 15 to detect pump outlet pressure. Control cabinet 15 includes pump operation indicator, pump fault indicator, manual start, automatic start, and stop buttons. When the level sensor 4 detects that the water level in the storage tank 7 is lower than the minimum level, it outputs a low level signal to control cabinet 15, which then controls the pump unit to stop, preventing the water injection pump 26 from running dry. When the pressure sensor 6 or pressure sensor 17 detects that the pressure in the pump outlet pipe 10 or pump outlet pipe 22 reaches a preset value, control cabinet 15 controls the pump unit to maintain constant pressure operation. Through this control method, the device can achieve automatic protection and stable output under different operating conditions, improving rescue safety.

[0034] The water storage section includes a water tank 7, a water tank outlet 13, a fire water inlet 14, and a fire water interface 24. The water tank 7 is made of stainless steel and has a volume of 1 cubic meter. A level sensor 4 is installed inside the water tank 7 and electrically connected to a level display 3. The fire water inlet 14 has a DN65 interface specification and is used to connect to an external fire hose; the fire water interface 24 is located on the side of the water tank 7 and is a DN65 inlet interface. External water enters the water tank 7 through the fire water inlet 14 or the fire water interface 24. The water tank outlet 13 is located on the outlet side of the water tank 7 and is connected to the pump inlet pipe 11, providing a stable water supply to the water injection pump 26.

[0035] The pump unit includes a high-pressure water pump motor 5, a high-pressure water pump motor 16, and a water injection pump 26. The water injection pump 26 is a vertical multistage centrifugal pump. Its inlet is connected to the water storage tank 7 via the pump inlet pipe 11, and its outlet is connected to an external pipeline via the pump outlet pipe 10 or the pump outlet pipe 22. The high-pressure water pump motors 5 and 16 are mounted above the pump body, driving the water injection pump 26 to operate. This allows water from the water storage tank 7 to enter the pump body through the pump inlet pipe 11, be pressurized by the multistage impellers, and then discharged from the pump outlet pipe 10 or the pump outlet pipe 22. The inlet and outlet diameters of the water injection pump 26 are both DN65, ensuring high-pressure, high-flow water injection. The drive motor power, according to the drawings, is 30 to 37 kilowatts, ensuring the pump unit can operate stably for extended periods in emergency situations.

[0036] The piping and valve components include a pump inlet pipe 11, a pump outlet pipe 10, a pump outlet pipe 22, a water outlet pipe 9, a check valve 8, a water outlet valve 12, a water outlet valve 21, a quick connector 18, a water outlet hose 19, and a tank truck interface 20. The pump inlet pipe 11 connects the water storage tank 7 to the water injection pump 26, ensuring smooth water flow into the pump body. The pump outlet pipe 10 is located at... Figure 1 In this embodiment, a pressure sensor 6, a check valve 8, and an outlet valve 12 are sequentially installed on it. The two outlet valves 12 and the check valve 8 are arranged sequentially to form redundant control. The pump outlet pipe 22 and the pump inlet pipe 11 are arranged in a straight line to reduce pipe bends and pressure loss; the pump outlet pipe 22 is located at... Figure 2 In this embodiment, a pressure sensor 17 and a water outlet valve 21 are installed sequentially on the pump. A check valve 8 prevents water from flowing back into the pump body and the water storage tank 7. Water outlet valves 12 and 21 are used for manual control of the water flow. A quick connector 18 is installed at the end of the pump outlet pipeline for quick connection and disconnection with the water outlet hose 19. The other end of the water outlet hose 19 is connected to a tank truck interface 20, which is a DN80 tank truck interface and can reliably seal and connect to the water inlet of the liquefied gas tank truck. This pipeline arrangement ensures that high-pressure water, after being pressurized by the water injection pump 26 from the water storage tank 7, can be injected into the tank truck through the water outlet pipeline 9 and the water outlet hose 19.

[0037] During use, water is injected into the water storage tank 7 through the fire water inlet 14 or the fire water interface 24. The level sensor 4 feeds back the water level signal to the control cabinet 15. After the control cabinet 15 starts the high-pressure water pump motor 5 or the high-pressure water pump motor 16, the water flows through the water storage tank outlet 13 into the pump inlet pipe 11, enters the water injection pump 26 and is pressurized, and then passes through the pump outlet pipe 10 or the pump outlet pipe 22 in sequence through the pressure sensor 6 or the pressure sensor 17, the check valve 8, the outlet valve 12 or the outlet valve 21, and enters the quick connector 18 and the outlet hose 19, and finally enters the tanker tank through the tanker interface 20.

[0038] Figure 2This section primarily showcases the complete piping configuration from the pump unit outlet to the tank truck interface. A quick connector 18 is installed at the end of the pump outlet pipe 22, allowing for quick connection and disconnection with the outlet hose 19. The outlet hose 19 is a flexible hose, with a tank truck interface 20 at its end. The tank truck interface 20 is a DN80 standard flange, ensuring a reliable connection to the water inlet of the liquefied gas tank truck and guaranteeing a stable flow of high-pressure water into the tank truck. Figure 2 As can be seen, the valves, sensors, hoses and tank truck interfaces on the pump outlet side constitute a complete water injection output channel, which not only ensures pressure monitoring, but also facilitates quick connection to the tank truck, improving the efficiency and safety of water injection operations.

[0039] Figure 3 The diagram illustrates the integration of the water storage system with the power distribution system. It shows the water storage tank 7, the power distribution box 23, and the fire water inlet 24. The fire water inlet 24 is another fire water inlet with a DN65 connector. After connection to an external fire hose, fire water can be directly injected into the water storage tank 7 as a supplementary water source. Figure 3 This indicates that the water storage tank 7 is connected to the external water supply through multiple interfaces and works in coordination with the power distribution system, thereby ensuring that the water injection pump always has a stable water source and reliable power support during operation. This layout enables the device to quickly fill with water, detect water level, and automatically protect itself in emergency situations, improving the system's continuous operation capability.

[0040] Figure 4 This demonstrates the installation method of the distribution box 25 and the water injection pump 26, as well as their on-site usage. The distribution box 25 is installed near the water injection pump 26 to supply power to and control the operation of the water injection pump 26 and the high-pressure water pump motor. The water injection pump 26 is a vertical multistage centrifugal pump. Its inlet is connected to the water outlet 13 of the storage tank via the pump inlet pipe 11, and its outlet is connected to either the pump outlet pipe 10 or the pump outlet pipe 22. The pump body is driven by the high-pressure water pump motor 5 or the high-pressure water pump motor 16. During operation, it pressurizes the water in the storage tank 7 and outputs it through the pipeline.

[0041] During the water injection process, pressure sensor 6 or pressure sensor 17 detects the outlet pressure in real time and transmits a signal to control cabinet 15. Control cabinet 15 adjusts the operation of the pump unit according to the detected value to maintain a constant pressure output and ensure a stable water injection process. Liquid level sensor 4 detects the water level in water storage tank 7 in real time. When the liquid level is lower than the minimum water level, control cabinet 15 outputs a stop command to prevent the water injection pump 26 from running dry.

[0042] This utility model achieves monitoring and protection of the pump unit through the coordinated operation of socket 1, control cabinet 15, distribution box 23, distribution box 25, liquid level sensor 4, pressure sensor 6, and pressure sensor 17; ensures water supply through water storage tank 7, fire water inlet 14, and fire water interface 24; achieves high-pressure water output through water injection pump 26 and high-pressure water pump motors 5 and 16; and achieves efficient and safe water injection connection through check valve 8, outlet valve 12, outlet valve 21, quick connector 18, outlet hose 19, and tank truck interface 20.

[0043] The above description is only a part of the embodiments of this application and does not limit the patent scope of this application. All equivalent structural transformations made under the technical concept of this application and using the contents of the specification and drawings of this application, or direct / indirect applications in other related technical fields, are included in the patent protection scope of this application.

Claims

1. A mobile high-pressure water injection device, comprising a power supply and control unit, a water storage unit, a pump unit, and pipelines and valves, characterized in that: The power supply and control section includes a power input interface, a control cabinet or distribution box, a liquid level sensor and a pressure sensor. The power input interface is electrically connected to the control cabinet or distribution box. The liquid level sensor is located inside the water storage section and is electrically connected to the control cabinet or distribution box. The pressure sensor is located on the pump outlet pipe and is electrically connected to the control cabinet or distribution box. The water storage section includes a water storage tank and a water inlet interface connected to an external fire water source. The outlet of the water storage tank is connected to the inlet of the pump unit through a pump inlet pipe. The pressure sensor is installed between the outlet of the water storage tank and the pump inlet pipe. The control cabinet or distribution box adjusts the high-pressure water pump motor according to the signal of the pressure sensor to reduce gas accumulation. The pump unit includes a high-pressure water pump motor, the inlet of which is connected to the pump inlet pipeline, and the outlet of which is connected to the pump outlet pipeline. The piping and valve components include a check valve, an outlet valve, a quick connector, an outlet hose, and a tank truck interface. The check valve and the outlet valve are sequentially installed on the pump outlet pipe. The two outlet valves and one check valve are arranged in a redundant control configuration. The quick connector is connected to the outlet hose, and the end of the outlet hose is connected to the tank truck interface. The pump outlet pipe and the pump inlet pipe are arranged in a straight line to reduce pipe bends and pressure loss. The control cabinet or distribution box controls the start-up, shutdown, and working status of the pump unit based on the signals from the liquid level sensor and the pressure sensor, thereby enabling high-pressure water injection operations for the liquefied gas tanker.

2. The apparatus according to claim 1, characterized in that: The water storage tank is made of stainless steel.

3. The apparatus according to claim 1, characterized in that: The control cabinet includes a liquid level display, a pressure display, a pump operation indicator, a pump fault indicator, and manual start, automatic start, and stop buttons.

4. The apparatus according to claim 1, characterized in that: The pump unit is a vertical multistage centrifugal pump with an inlet and outlet diameter of DN65.

5. The apparatus according to claim 1, characterized in that: The pump outlet pipeline includes a pressure sensor, a check valve, and a water outlet valve, which are arranged in sequence.

6. The apparatus according to claim 1, characterized in that: The quick connector is a large-diameter quick-connect type, which can be quickly assembled and disassembled with the water outlet hose.

7. The apparatus according to claim 1, characterized in that: The end of the water outlet hose is equipped with a tank truck interface for reliable connection with the water inlet of the liquefied gas tank truck.

8. The apparatus according to claim 1, characterized in that: The water inlet interface has a specification of DN65 and is used to connect with fire hoses.

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