A refrigeration and fire extinguishing device using carbon dioxide hydrate
By designing a carbohydrate refrigeration and fire extinguishing equipment including gas cylinders, reactors and evaporators, and using the stirring and jet structure to improve the refrigeration efficiency and fire extinguishing capacity, the problems of low refrigeration efficiency and poor fire extinguishing capacity in the prior art have been solved. It achieves efficient, energy-saving and environmentally friendly results.
Patent Information
- Application Number
- CN202010280005.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2020-04-10
- Publication Date
- 2024-12-24
- Estimated Expiration
- 2040-04-10
AI Technical Summary
The existing carbohydrate refrigeration system has low refrigeration efficiency and poor fire extinguishing capabilities, which cannot effectively save energy and protect the environment.
A device including gas cylinders, reactors and evaporators was designed, and the efficient generation and recycling of carbohydrates of carbohydrates were achieved through the stirring and jet structure, and the use of components such as flow controllers, stirring devices, temperature sensors and jet tubes. In case of fire, inorganic salts are used as accelerator to extinguish the fire efficiently.
The refrigeration efficiency has been improved by more than 50%, and efficient fire extinguishing effect has been achieved, energy saving, environment protection, and a huge improvement in economic and social benefits has been achieved.
Smart Images
Figure CN111282177B_ABST
Abstract
Description
Technical Field
[0001] The invention relates to chemical equipment, in particular to refrigeration and fire extinguishing equipment utilizing carbon dioxide hydrate. Background Art
[0002] Carbon dioxide hydrate is a crystalline solid formed by water and carbon dioxide (CO2) gas under certain conditions such as temperature, pressure, and gas concentration. It is a non-stoichiometric solid compound. Carbon dioxide hydrate can undergo phase change above zero degrees and has a high decomposition enthalpy. As a substitute for traditional refrigerants, it can be used in refrigeration systems to effectively alleviate global warming. At the same time, carbon dioxide hydrate also has excellent thermodynamic properties, which can reduce compressor power and improve the energy efficiency of refrigeration systems. A unit volume of hydrate can store 160~180 volumes of gas under standard conditions. Therefore, when carbon dioxide hydrate decomposes, it absorbs a lot of heat and releases water and a large amount of carbon dioxide, which has a good fire extinguishing effect. Inorganic salts used as hydrate promoters in the production of carbon dioxide hydrates also have the ability to extinguish fires. The mechanism is mainly that the selected inorganic salts can increase the gas storage capacity of water per unit volume in carbon dioxide hydrates, and more carbon dioxide can be released during fire extinguishing. At the same time, the released halogen anions and phosphates can react with the free radicals generated during the combustion process to interrupt the chain reaction. The released silicon dioxide can absorb the heat generated by the combustion and cover the surface of the burning material, thereby achieving the purpose of extinguishing the fire and realizing the compatibility of carbon dioxide hydrate as a good conventional refrigeration system with the emergency fire extinguishing system. However, no public reports have been seen so far. Summary of the invention
[0003] In view of the above situation, in order to overcome the defects of the prior art, the purpose of the present invention is to provide a refrigeration and fire extinguishing equipment using carbon dioxide hydrate, which can effectively solve the problems of low refrigeration efficiency and poor fire extinguishing ability of carbon dioxide hydrate, thereby saving energy and protecting the environment.
[0004] To achieve the above-mentioned purpose, the technical solution provided by the present invention is a refrigeration and fire extinguishing device utilizing carbon dioxide hydrate, comprising a gas cylinder, a reactor and an evaporator, wherein the gas outlet of the gas cylinder is connected to the gas inlet of the reactor via a pipeline and a first tee, a flow controller and a first valve are installed on the pipeline between the gas cylinder and the first tee, an insulation layer is installed on the outer peripheral surface of the reactor, a rotating shaft of the motor disposed outside the reactor is vertically downwardly connected to the upper end of a stirring rod via a coupling, a stirring blade disposed at the lower part of the reactor is installed at the lower end of the stirring rod extending into the center of the reactor, the motor, the stirring rod and the stirring blade constitute a stirring device of the reactor, a temperature sensor and a pressure gauge connected to the reactor are installed on the outer wall of the reactor, a pulverizer and a first one-way valve are installed in sequence on the outlet pipeline at the lower part of the reactor, and a first one-way valve is installed on the outlet pipeline at the lower part of the reactor. The outlet of a one-way valve is connected to the inlet of the second valve and the fifth valve respectively through the second three-way valve, and the outlet of the fifth valve is connected to the injection port pipe, forming a hydrate injection fire extinguishing structure; the outlet of the second valve is connected to the inlet of the evaporator through a pipeline, the outlet of the evaporator is connected to the inlet of the gas-liquid separator through a pipeline, the gas outlet of the gas-liquid separator is connected to the inlet of the booster pump through a pipeline, the outlet of the booster pump is connected to the first three-way valve through the pipeline and the third valve, and is connected to the gas inlet of the reactor through the first three-way valve, forming a gas circulation structure of the reactor; the water outlet at the bottom of the gas-liquid separator is connected to the inlet of the second one-way valve through a pipeline, and the outlet of the second one-way valve is connected to the water inlet of the reactor through the pipeline and the fourth valve, forming a liquid circulation structure of the reactor; the reactor is filled with inorganic salts and water.
[0005] The invention has a novel and unique structure, realizes a high degree of process automation, has a high refrigeration efficiency, has a good fire extinguishing effect, saves energy, protects the environment, truly realizes energy conservation and environmental protection, and has huge economic and social benefits. BRIEF DESCRIPTION OF THE DRAWINGS
[0006] Figure 1 It is a structural frame diagram of the present invention.
[0007] Figure 2 It is a schematic diagram of the injection nozzle tube structure of the present invention. DETAILED DESCRIPTION
[0008] The specific implementation modes of the present invention are described in detail below in conjunction with the accompanying drawings and specific circumstances.
[0009] In conjunction with the accompanying drawings, a refrigeration and fire extinguishing equipment using carbon dioxide hydrate is provided, including a gas cylinder, a reactor and an evaporator, the gas outlet of the gas cylinder 1 is connected to the gas inlet of the reactor 4 through a pipeline and a first tee 22-1, a flow controller 2 and a first valve 3 are installed on the pipeline between the gas cylinder 1 and the first tee 22-1, an insulation layer 5 is installed on the outer peripheral surface of the reactor 4, the rotating shaft of the motor 8 placed outside the reactor 4 is vertically downwardly connected to the upper end of the stirring rod 7 through a coupling, the lower end of the stirring rod 7 extending into the center of the reactor 4 is equipped with a stirring blade 6 placed in the lower part of the reactor 4, the motor 8, the stirring rod 7 and the stirring blade 6 constitute a stirring device of the reactor 4, a temperature sensor 9 and a pressure gauge 10 connected to the reactor 4 are installed on the outer wall of the reactor 4, a pulverizer 11 and a first one-way valve 12 are installed in sequence on the outlet pipeline at the lower part of the reactor 4, and the outlet of the first one-way valve 12 is connected to the second valve 13 and the fifth valve 13 respectively through the second tee 22-2. The inlet of the door 20 is connected, and the outlet of the fifth valve 20 is connected to the injection port pipe 21, forming a hydrate injection fire extinguishing structure; the outlet of the second valve 13 is connected to the inlet of the evaporator 14 through a pipeline, the outlet of the evaporator 14 is connected to the inlet of the gas-liquid separator 15 through a pipeline, the gas outlet of the gas-liquid separator 15 is connected to the inlet of the booster pump 16 through a pipeline, the outlet of the booster pump 16 is connected to the first three-way valve 22-1 through a pipeline and the third valve 17, and is connected to the air inlet of the reactor 4 through the first three-way valve 22-1, forming a gas circulation structure of the reactor 4; the water outlet at the bottom of the gas-liquid separator 15 is connected to the inlet of the second one-way valve 18 through a pipeline, and the outlet of the second one-way valve 18 is connected to the water inlet of the reactor 4 through a pipeline and the fourth valve 19, forming a liquid circulation structure of the reactor 4; the reactor 4 is filled with inorganic salts and water, and forms a refrigeration structure with the pulverizer 11, the first one-way valve 12, the second valve 13 and the evaporator 14.
[0010] To ensure better implementation effect, the stirring blades 6 include at least two or more symmetrical stirring blades 6 that are spirally evenly distributed on the lower end of the stirring rod 7.
[0011] The gas-liquid separator 15 is a PXQF gas-liquid separator (known technology, commercially available product).
[0012] The injection port pipe 21 is a Venturi pipe, and the inner diameter of the inlet section 21-1 gradually decreases toward the throat 21-2. The diameter of the injection port pipe 21 at the throat 21-2 is 1 / 3 to 1 / 4, and the inner diameter gradually increases from the throat 21-2 to the diffusion section 23-3.
[0013] The outer wall of the stirring rod 7 and the contact part of the reaction kettle 4 form a sealing structure through the bearing and the sealing ring.
[0014] When the present invention is in specific operation, the interior of the reactor is first cleaned, and then all the valves of the present invention are closed, and whether the system is leaking is first detected, the first valve, the first one-way valve, the second valve, the third valve, the second one-way valve and the fourth valve are opened, and then the gas cylinder is opened for ventilation. After a period of time, the first valve is closed, and it is observed whether the value of the pressure gauge decreases. If the value of the pressure gauge is consistent and stable, it indicates that the air tightness of the entire equipment is good. Otherwise, it indicates that there is a leak and the leak source needs to be found first. If the system is airtight, the fifth valve is opened to discharge the gas in the equipment, and after the pressure indication number is zero, all valves are closed.
[0015] Open the feed port of the reactor, load inorganic salts and water with a mass concentration of 0.001-0.1 mol / L, then close the feed port of the reactor (known technology), open the gas cylinder and the first valve, and introduce carbon dioxide gas. After the pressure gauge reaches a certain pressure, close the gas cylinder and the first valve, stop introducing gas, turn on the motor, and the rotating shaft of the motor drives the stirring rod and the stirring blade to stir, promote the formation of gas hydrates, and avoid the formation of hydrate clusters. After the pressure gauge drops to a certain value, open the gas cylinder and the first valve, continue to introduce carbon dioxide gas, and after the pressure gauge reaches a certain pressure, close the gas cylinder and the first valve, stop introducing gas, turn on the pulverizer, the first single The first check valve, the second check valve and the fifth check valve are used to decompose the carbon dioxide hydrate to achieve the refrigeration effect. The carbon dioxide and the aqueous solution generated by the decomposition enter the gas-liquid separator and are separated by the gas-liquid separator. The separated carbon dioxide is pressurized by the booster pump and re-enters the reactor to participate in the formation of carbon dioxide hydrate, forming a gas circulation structure of the reactor. The separated aqueous solution flows into the reactor through the second check valve to form a liquid circulation structure of the reactor. When a fire occurs, the second valve is closed and the gas cylinder, the first valve and the fifth valve are opened at the same time. The carbon dioxide hydrate in the reactor is sprayed out from the injection port pipe through the pulverizer, the first check valve, the second three-way valve and the fifth valve to form a hydrate spray fire extinguishing structure.
[0016] When the present invention is used in practice, each valve can be replaced by a solenoid valve and connected to a separately provided PLC controller. At the same time, each electronic device is connected to the controller to form an automatic control structure (known technology) to improve work efficiency.
[0017] It should be noted that specific examples are used in the present invention to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method of the present invention and its core idea. At the same time, for those skilled in the art, according to the idea of the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as a limitation on the present invention. Without departing from the scope of the technical solution of the present invention, equivalent embodiments that can be modified or modified to equivalent changes using the technical content disclosed above all fall within the protection scope of the present invention.
[0018] The present invention is applicable to refrigeration and fire extinguishing equipment utilizing carbon dioxide hydrate, with carbon dioxide gas as a gas source, and the gas in the reactor being at a certain pressure through a valve, a flow controller and a pressure gauge, and the generation speed of gas hydrates in the reactor is accelerated by an electric motor while avoiding the generation of hydrate clusters, and the real-time recording of the internal temperature of the reactor is achieved through a temperature sensor, and the outside is cooled by an evaporator, and high-efficiency fire extinguishing is achieved through a jet nozzle. Through field experiments and use, the present invention utilizes inorganic salts with fire extinguishing effects as carbon dioxide hydrate promoters, increases the gas storage capacity of carbon dioxide hydrates, improves the promotion of hydrate generation and has fire extinguishing effects at the same time, has dual effects, and has high refrigeration efficiency. Compared with the prior art, the refrigeration efficiency is increased by more than 50%, and the fire extinguishing effect is good. The gas and liquid can be recycled, energy is saved, and the environment is protected, thus truly achieving energy conservation and environmental protection, and having huge economic and social benefits.
Claims
1. A refrigeration and fire extinguishing device using carbon dioxide hydrate, comprising a gas cylinder, a reactor and an evaporator, characterized in that: The gas outlet of the gas cylinder (1) is connected to the gas inlet of the reaction kettle (4) through a pipeline and a first three-way connection (22-1). A flow controller (2) and a first valve (3) are installed on the pipeline between the gas cylinder (1) and the first three-way connection (22-1). A heat insulation layer (5) is installed on the outer peripheral surface of the reaction kettle (4). The rotating shaft of the motor (8) placed outside the reaction kettle (4) is vertically downwardly connected to the upper end of the stirring rod (7) through a coupling. The lower end of the stirring rod (7) extending into the center of the reaction kettle (4) is provided with a The stirring blade (6) at the lower part of the reactor (4), the motor (8), the stirring rod (7) and the stirring blade (6) constitute a stirring device of the reactor (4); the outer wall of the reactor (4) is provided with a temperature sensor (9) and a pressure gauge (10) which are connected to the reactor (4); the outlet pipe at the lower part of the reactor (4) is provided with a pulverizer (11) and a first check valve (12) in sequence; the outlet of the first check valve (12) is connected to the second valve (13) and the fifth valve (20) respectively through the second three-way valve (22-2). ), the outlet of the fifth valve (20) is connected to the injection port pipe (21), thereby forming a hydrate injection fire extinguishing structure; the outlet of the second valve (13) is connected to the inlet of the evaporator (14) via a pipeline, the outlet of the evaporator (14) is connected to the inlet of the gas-liquid separator (15) via a pipeline, the gas outlet of the gas-liquid separator (15) is connected to the inlet of the booster pump (16) via a pipeline, the outlet of the booster pump (16) is connected to the first three-way (22-1) via a pipeline and the third valve (17), and The first three-way valve (22-1) is connected to the air inlet of the reactor (4), forming a gas circulation structure of the reactor (4); the water outlet at the bottom of the gas-liquid separator (15) is connected to the inlet of the second one-way valve (18) through a pipeline, and the outlet of the second one-way valve (18) is connected to the water inlet of the reactor (4) through a pipeline and a fourth valve (19), forming a liquid circulation structure of the reactor (4); the reactor (4) is filled with inorganic salt and water with a mass concentration of 0.001-0.1 mol / L; The inorganic salt is potassium phosphate or metal halide ABn, wherein A is one of Na, Mg, K or Ca, B is one of Br or I, and n=1 or 2; Open the feed port of the reactor, load inorganic salts and water with a mass concentration of 0.001-0.1 mol / L, then close the feed port of the reactor, open the gas cylinder and the first valve, and introduce carbon dioxide gas. After the pressure gauge reaches a certain pressure, close the gas cylinder and the first valve, stop introducing gas, turn on the motor, and the rotating shaft of the motor drives the stirring rod and the stirring blade to stir, promote the formation of gas hydrates, and avoid the formation of hydrate clusters. After the pressure gauge drops to a certain value, open the gas cylinder and the first valve, continue to introduce carbon dioxide gas, and after the pressure gauge reaches a certain pressure, close the gas cylinder and the first valve, stop introducing gas, open the pulverizer, the first one-way valve, The second valve and the evaporator decompose carbon dioxide hydrate to achieve a refrigeration effect. The decomposed carbon dioxide and aqueous solution enter the gas-liquid separator and are separated by the gas-liquid separator. The separated carbon dioxide is pressurized by the booster pump and re-enters the reactor to participate in the formation of carbon dioxide hydrate, forming a gas circulation structure of the reactor. The separated aqueous solution flows into the reactor through the second one-way valve to form a liquid circulation structure of the reactor. When a fire occurs, the second valve is closed and the gas cylinder, the first valve and the fifth valve are opened at the same time. The carbon dioxide hydrate in the reactor is sprayed out from the injection port pipe through the pulverizer, the first one-way valve, the second three-way valve and the fifth valve, forming a hydrate injection fire extinguishing structure.
2. The refrigeration and fire extinguishing equipment using carbon dioxide hydrate according to claim 1, characterized in that: The stirring blades (6) include at least two or more symmetrical blades that are evenly distributed in a spiral shape on the lower end of the stirring rod (7).
3. The refrigeration and fire extinguishing equipment using carbon dioxide hydrate according to claim 1, characterized in that: The injection port pipe (21) is a Venturi pipe, the inner diameter of the inlet section (21-1) gradually decreases toward the throat (21-2), the diameter of the injection port pipe (21) at the throat (21-2) is 1 / 3 to 1 / 4, and the inner diameter gradually increases from the throat (21-2) to the diffusion section (23-3).
4. The refrigeration and fire extinguishing equipment using carbon dioxide hydrate according to claim 1, characterized in that: The contact portion between the outer wall of the stirring rod (7) and the reaction kettle (4) forms a sealing structure via a bearing and a sealing ring.