Outdoor liquid nitrogen explosion suppression device

Abstract

The outdoor liquid nitrogen explosion suppression device comprises a protection cabinet, a cabinet body, a liquid nitrogen tank and a pipe network mechanism, wherein the cabinet body is fixedly mounted in the protection cabinet through supporting legs; the liquid nitrogen tank and the pipe network mechanism are vertically mounted in the cabinet body; a first through hole and a ventilation hole are formed in the top of the cabinet body; a second through hole is formed in the bottom of the protection cabinet; a pressure relief opening and a discharging opening are formed in the top of the liquid nitrogen tank, a pressure relief valve is installed in the pressure relief opening, a first control valve is installed at the discharging opening and connected with a discharging pipe, the other end of the discharging pipe extends out of the first through hole and is connected with an extension pipe, and the other end of the extension pipe penetrates through the second through hole to be connected with the pipe network mechanism; a temperature sensor, a pressure sensor and a liquid level sensor are installed in the liquid nitrogen tank. The outdoor liquid nitrogen tank can be in a shady and cool state.

Description

Technical Field

[0001] The present invention relates to the technical field of liquid nitrogen explosion suppression, and particularly to an outdoor liquid nitrogen explosion suppression device. Background Art

[0002] Nitrogen is a gas under normal temperature and pressure. Under the refrigeration of a refrigerator, nitrogen becomes liquid. The low-temperature characteristics of liquid nitrogen enable it to absorb heat quickly, effectively reduce the fire source temperature, and achieve rapid fire extinguishing. Secondly, liquid nitrogen fire extinguishing does not produce toxic gases or chemical residues, and has no safety impact on human health and the environment. In addition, using liquid nitrogen for fire extinguishing also has obvious advantages in terms of safety. The substances involved are not easy to burn or explode, greatly reducing the risks during the fire extinguishing process. These characteristics make liquid nitrogen an efficient and environmentally friendly fire extinguishing option in electrochemical fires.

[0003] Existing liquid nitrogen explosion suppression devices are usually stored in a cool and ventilated place to ensure that the liquid nitrogen is in a stable pressure and temperature state. However, when a liquid nitrogen explosion suppression device is used outdoors, it will be directly exposed to natural climate conditions, and the pressure and temperature in the liquid nitrogen tank 2 of the liquid nitrogen explosion suppression device will change with the weather, affecting subsequent use. Summary of the Invention

[0004] To solve the technical problems in the background art, the present invention proposes an outdoor liquid nitrogen explosion suppression device.

[0005] An outdoor liquid nitrogen explosion suppression device proposed by the present invention includes: a protective cabinet, a cabinet body, a liquid nitrogen tank, and a pipe network mechanism;

[0006] Support feet are provided at the four corners of the bottom of the cabinet body, and the cabinet body is fixedly installed in the protective cabinet through the support feet; a first through hole and a ventilation hole are opened at the top of the cabinet body; a second through hole is opened at the bottom of the protective cabinet;

[0007] The liquid nitrogen tank is vertically installed in the cabinet body. A pressure relief port and a discharge port are provided at the top of the liquid nitrogen tank. A pressure relief valve is installed in the pressure relief port, and a first control valve is installed at the discharge port. The first control valve is connected to a discharge pipe. The other end of the discharge pipe extends out of the first through hole and is connected to an extension pipe. The other end of the extension pipe passes through the second through hole and is connected to the pipe network mechanism. The pipe network mechanism is used to spray liquid nitrogen into multiple energy storage compartments; heat insulation layers are provided on the outer walls of the discharge pipe and the extension pipe.

[0008] Preferably, air inlets and air outlets are opened on opposite side walls of the protective cabinet. Filters are installed in both the air inlets and the air outlets, and a blower is also installed in the air outlet to dissipate heat from the inside of the protective cabinet.

[0009] Preferably, a pressurization port is opened on the liquid nitrogen tank. The pressurization port is connected to a driving gas cylinder, and a second control valve is installed in the pressurization port.

[0010] Preferably, a flow regulating valve is provided on the pipeline between the second control valve and the driving gas cylinder to ensure that the pressure output by the driving gas cylinder meets the output requirements.

[0011] Preferably, it further includes a refrigerator and a radiator; an inner heating layer, a cooling coil layer and a heat insulation layer are sequentially sleeved outside the liquid nitrogen tank from inside to outside; the heating layer is used to heat the inside of the liquid nitrogen tank, and the cooling coil layer is used to cool the heating layer and the inside of the liquid nitrogen tank; the inlet of the cooling coil layer is connected to the coolant outlet of the refrigerator, the outlet of the cooling coil layer is connected to the inlet of the pump, and the outlet of the pump is connected to the coolant inlet of the refrigerator; the refrigerator is used to refrigerate the coolant flowing through it, and the radiator is used to dissipate heat from the refrigerator.

[0012] Preferably, the heating layer is provided with a plurality of heaters arranged uniformly and at intervals along the circumferential direction of the liquid nitrogen tank, and each heater is arranged along the axial direction of the liquid nitrogen tank.

[0013] Preferably, the pipe network mechanism includes a main pipeline, a plurality of branch pipelines and a plurality of atomizing nozzle assemblies. The main pipeline is laid in a trench. One end of the main pipeline is connected to an extension pipe, and the other end is respectively connected to a plurality of branch pipelines; the plurality of branch pipelines and the plurality of atomizing nozzle assemblies are all used to be installed in the energy storage cabin, the plurality of branch pipelines and the plurality of atomizing nozzle assemblies are connected in one-to-one correspondence, and the plurality of atomizing nozzle assemblies are used to spray nitrogen into a plurality of battery cabins, battery clusters or / and battery packs in one-to-one correspondence.

[0014] In the present invention, for the proposed outdoor liquid nitrogen explosion suppression device, by covering a protective cabinet outside the cabinet body, it is ensured that the cabinet body and the liquid nitrogen tank inside the cabinet body are in a cool state. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic structural diagram of the outdoor liquid nitrogen explosion suppression device in an embodiment proposed by the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0016] It should be noted that, without conflict, the embodiments in the present invention and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the drawings and in combination with the embodiments.

[0017] An outdoor liquid nitrogen explosion suppression device proposed by the present invention includes: a protective cabinet 5, a cabinet body 1, a liquid nitrogen tank 2, a controller 3 and a pipe network mechanism;

[0018] Support feet are provided at the four corners of the bottom of the cabinet body 1, and the cabinet body 1 is installed in the protective cabinet 5 through the support feet; a first through hole 11 and a ventilation hole are opened at the top of the cabinet body 1; a second through hole 51 is opened at the bottom of the protective cabinet 5;

[0019] The liquid nitrogen tank 2 is vertically installed inside the cabinet body 1. The top of the liquid nitrogen tank 2 is provided with a pressure relief port and a discharge port. A pressure relief valve is installed in the pressure relief port, and a first control valve is installed at the discharge port. The first control valve is connected to a discharge pipe. The other end of the discharge pipe extends out of the first through hole 11 and is connected to an extension pipe. The other end of the extension pipe passes through the second through hole 51 and is connected to the pipe network mechanism. The pipe network mechanism is used to spray liquid nitrogen into multiple energy storage compartments; a temperature sensor, a pressure sensor, and a liquid level sensor are installed inside the liquid nitrogen tank 2;

[0020] The controller 3 is installed inside the protective cabinet 5, and the temperature sensor, the pressure sensor, the liquid level sensor, the first control valve, and the pipe network mechanism are respectively electrically connected to the controller 3.

[0021] In the present invention, by covering the outside of the cabinet body 1 with a protective cabinet 5, it is ensured that the cabinet body 1 and the liquid nitrogen tank 2 inside the cabinet body 1 are in a cool state. Moreover, the liquid level of the liquid nitrogen in the liquid nitrogen tank 2, as well as the pressure and temperature inside the liquid nitrogen tank 2, can be clearly understood through the temperature sensor, the pressure sensor, and the liquid level sensor, so as to facilitate the staff to check and avoid insufficient quantity during use.

[0022] In this embodiment, heat preservation layers are provided on the outer walls of the discharge pipe and the extension pipe.

[0023] In a further embodiment, air inlets and air outlets are opened on opposite side walls of the protective cabinet 5. Filters are installed in both the air inlets and the air outlets, and a fan is also installed in the air outlet to dissipate heat inside the protective cabinet 5.

[0024] The support feet in this embodiment are fixedly connected to the protective cabinet 5 to improve the stability of the entire device.

[0025] As Figure 1 shown, in one specific embodiment, a pressurization port is opened on the liquid nitrogen tank 2. The pressurization port is connected to a driving gas cylinder 4. A second control valve is installed in the pressurization port, and the second control valve is electrically connected to the controller 3.

[0026] This embodiment can introduce normal temperature nitrogen gas into the liquid nitrogen tank through the driving gas cylinder 4 to increase the pressure inside the liquid nitrogen tank and drive the liquid nitrogen to flow out to complete the spraying of the liquid nitrogen.

[0027] In a further embodiment, a flow regulating valve is provided on the pipeline between the second control valve and the driving gas cylinder 4. The flow regulating valve is electrically connected to the controller 3 to ensure that the pressure output by the driving gas cylinder 4 meets the output requirements.

[0028] In another specific embodiment, a refrigerating machine and a radiator are further included; outside the liquid nitrogen tank 2, a heating layer, a cooling coil layer, and a heat-insulating layer are sequentially sleeved from the inside to the outside; the heating layer is used to heat the inside of the liquid nitrogen tank 2, and the cooling coil layer is used to cool the heating layer and the inside of the liquid nitrogen tank 2; the inlet of the cooling coil layer is connected to the coolant outlet of the refrigerating machine, the outlet of the cooling coil layer is connected to the inlet of the pump, and the outlet of the pump is connected to the coolant inlet of the refrigerant; the refrigerating machine is used to refrigerate the coolant flowing through it, and the radiator is used to dissipate heat from the refrigerating machine; the heater, the pump, the refrigerating machine, and the radiator in the heating layer are respectively electrically connected to the controller 3.

[0029] With such a setting in this embodiment, the liquid nitrogen tank 2 can increase or decrease pressure automatically under the control of the controller 3, effectively improving the control precision of the temperature and pressure inside the liquid nitrogen, thereby improving the control precision of liquid nitrogen injection. Moreover, the setting of the refrigerating machine and the radiator can also ensure the temperature stability of the liquid nitrogen inside the liquid nitrogen tank 2 when it is in the storage state.

[0030] In a further embodiment, the heating layer is provided with a plurality of heaters arranged evenly and at intervals along the circumferential direction of the liquid nitrogen tank 2, and each heater is arranged along the axial direction of the liquid nitrogen tank 2, so as to facilitate uniform heating and the calculation of heat, thereby enabling more precise temperature control and adjustment of the injection pressure.

[0031] In this embodiment, the pipe network mechanism includes a main pipe, a plurality of branch pipes, and a plurality of atomizing nozzle assemblies. The main pipe is laid in a trench. One end of the main pipe is connected to an extension pipe, and the other end is respectively connected to a plurality of branch pipes; the plurality of branch pipes and the plurality of atomizing nozzle assemblies are both used to be installed in the energy storage cabin, the plurality of branch pipes and the plurality of atomizing nozzle assemblies are connected in one-to-one correspondence, and the plurality of atomizing nozzle assemblies are used to spray nitrogen into a plurality of battery cabins, battery clusters, or / and battery packs in one-to-one correspondence.

[0032] It should be understood that the outside of the main pipe in this embodiment is provided with a heat-insulating layer, a protective layer, and an armored layer from the inside to the outside.

[0033] Specifically, both the main pipe and the branch pipes are made of DN25 fire-fighting seamless steel pipes.

[0034] In this embodiment, a power supply is further included, and the power supply is electrically connected to the controller 3 to supply power to the controller 3.

[0035] Specifically, the power supply includes commercial power and a backup battery to facilitate timely response to remote instructions for startup.

[0036] In one specific embodiment, one nitrogen liquefaction explosion suppression device is configured for every three energy storage cabins. The nitrogen liquefaction explosion suppression device is independently powered and has functions of remote passive command start and emergency mechanical start. The nitrogen liquefaction explosion suppression device is installed outside the container. The main pipeline in the pipeline mechanism is laid in the trench. Multiple branch pipelines and multiple atomizing nozzle assemblies in the pipeline mechanism are pipeline components shared with the perfluoromethylcyclohexane fire extinguishing mechanism. The minimum protection unit of the nitrogen liquefaction explosion suppression device is the battery module, and one atomizing nozzle is preferably configured for each battery module.

[0037] As mentioned above, the above is only the preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention should cover within the protection scope of the present invention according to the technical solution and inventive concept of the present invention for equivalent replacement or change.

Claims

1. An outdoor liquid nitrogen explosion suppression device, characterized in that, Including: A protective cabinet (5), a cabinet body (1), a liquid nitrogen tank (2), and a pipe network mechanism; Support feet are provided at the four corners of the bottom of the cabinet body (1), and the cabinet body (1) is fixedly installed in the protective cabinet (5) through the support feet; a first through hole (11) and a ventilation hole are provided at the top of the cabinet body (1); a second through hole (51) is provided at the bottom of the protective cabinet (5); The liquid nitrogen tank (2) is vertically installed in the cabinet body (1). A pressure relief port and a discharge port are provided at the top of the liquid nitrogen tank (2). A pressure relief valve is installed in the pressure relief port, and a first control valve is installed at the discharge port. The first control valve is connected to a discharge pipe. The other end of the discharge pipe extends out of the first through hole (11) and is connected to an extension pipe. The other end of the extension pipe passes through the second through hole (51) and is connected to the pipe network mechanism. The pipe network mechanism is used to spray liquid nitrogen into multiple energy storage compartments; a temperature sensor, a pressure sensor, and a liquid level sensor are installed in the liquid nitrogen tank (2); heat insulation layers are provided on the outer walls of the discharge pipe and the extension pipe.

2. The outdoor liquid nitrogen explosion suppression device according to claim 1, wherein, Air inlets and air outlets are provided on the opposite side walls of the protective cabinet (5). Filters are installed in both the air inlets and the air outlets, and a fan is also installed in the air outlet.

3. The outdoor liquid nitrogen explosion suppression device according to claim 1, wherein A pressurization port is provided on the liquid nitrogen tank (2), and the pressurization port is connected to a driving gas cylinder (4). A second control valve is installed in the pressurization port.

4. The outdoor liquid nitrogen explosion suppression device according to claim 3, characterized in that, A flow regulating valve is provided on the pipeline between the second control valve and the driving gas cylinder (4).

5. The outdoor liquid nitrogen explosion suppression device according to claim 1, characterized in that, It also includes a refrigerating machine and a radiator; an inner heating layer, a cooling coil layer, and a heat insulation layer are sequentially sleeved outside the liquid nitrogen tank (2) from inside to outside; the heating layer is used to heat the inside of the liquid nitrogen tank (2), and the cooling coil layer is used to cool the heating layer and the inside of the liquid nitrogen tank (2); the inlet of the cooling coil layer is connected to the coolant outlet of the refrigerating machine, the outlet of the cooling coil layer is connected to the inlet of the pump, and the outlet of the pump is connected to the coolant inlet of the refrigerating machine; the refrigerating machine is used to refrigerate the coolant flowing through it, and the radiator is used to dissipate heat from the refrigerating machine.

6. The outdoor liquid nitrogen explosion suppression device according to claim 5, characterized in that, The heating layer is provided with a plurality of heaters arranged evenly and at intervals along the circumferential direction of the liquid nitrogen tank (2), and each heater is arranged along the axial direction of the liquid nitrogen tank (2).

7. The outdoor liquid nitrogen explosion suppression device according to claim 1, characterized in that, The pipe network mechanism includes a main pipeline, a plurality of branch pipelines, and a plurality of atomizing nozzle assemblies. The main pipeline is laid in a trench. One end of the main pipeline is connected to the extension pipe, and the other end is respectively connected to a plurality of branch pipelines; the plurality of branch pipelines and the plurality of atomizing nozzle assemblies are all used to be installed in the energy storage compartments. The plurality of branch pipelines and the plurality of atomizing nozzle assemblies are connected one by one. The plurality of atomizing nozzle assemblies are used to spray nitrogen into the plurality of battery compartments, battery clusters, or / and battery packs one by one.

Images