97 results about "1,1,1,2,3,3,3-Heptafluoropropane" patented technology

A pharmaceutical aerosol formulation comprising particles of (a) formoterol or a pharmaceutically acceptable salt, solvate or physiologically functional derivative thereof and (b) mometasone or a pharmaceutically acceptable salt, solvate, or physiologically functional derivative, thereof dispersed in a propellant selected from the group consisting of 1,1,1,2-tetrafluoroethane, 1,1,1,2,3,3,3-heptafluoropropane and a mixture thereof, and a bulking agent having a mass median diameter of less than one micron.

Disclosed are methods and compositions for forming a flexible, open cell viscoelastic foams which utilize a thermosetting composition comprising one or more components capable of forming a thermoset matrix and a blowing agent comprising at least one chemical blowing agent, such as water, and at least one physical blowing agent selected from the group consisting of trans-1-chloro-3,3,3-trifluoropropene (HFCO-1233zd(E)), 1,1,1,3,3-pentafluoropropane (HFC-245fa); 1,1,1,3,3-pentafluorobutane (365mfc), blends consisting essentially of at least about 80% of HFC-365mfc and 1,1,1,2,3,3,3-heptafluoropropane (227ea), and combinations of any two or more of these.

The invention discloses an efficient composite fire extinguishing agent and a preparation method thereof, and relates to the technical field of firefighting. The fire extinguishing agent comprises, byweight, 28-36 parts of heptafluoropropane, 40-48 parts of 1,1,2,2,3,3,4-heptafluorocyclopentane, 4-8 parts of liquid nitrogen, 6-12 parts of ammonium bicarbonate, 1-5 parts of calcium carbonate, 1-3parts of potassium sulfate, 2-6 parts of talcum powder and 1-5 parts of diatomite. The fire extinguishing agent has the advantages of combination of the fire extinguishing advantages of several physical and chemical fire extinguishing agents, improved fire extinguishing efficiency, low corrosivity, long atmospheric survival time and low greenhouse effect potential value.

The present invention discloses a local submerged gas fire extinguishing device in an electronic distribution transforming cabinet. The device comprises a direct type fire detecting and fire extinguishing apparatus or an indirect type fire detecting and fire extinguishing apparatus, wherein the direct type fire detecting and fire extinguishing apparatus is divided into a carbon dioxide direct type fire detecting and fire extinguishing apparatus and a heptafluoropropane direct type fire detecting and fire extinguishing apparatus, the indirect type fire detecting and fire extinguishing apparatus is divided into a carbon dioxide indirect type fire detecting and fire extinguishing apparatus and a heptafluoropropane indirect type fire detecting and fire extinguishing apparatus. According to the device, a fire extinguishing agent container bottle filled with a fire extinguishing agent, a container valve and a fire detecting tube capable of fire extinguishing agent releasing or a releasing tube are combined into the fire extinguishing device; the fire detecting tube prepared from a non-metal soft substance material has characteristics of effective temperature susceptibility, softness and long time leakage resistance, and the like; during the using process, the fire detecting tube is placed on the position close to or above a part of the electronic distribution transforming cabinet positioned on a place, wherein the fire source is generated most possibly on the place; once the fire is generated, the position of the fire detecting tube is softened and broken, wherein the position of the fire detecting tube is subjected to the highest temperature; the gas for fire extinguishing is released in a protection area in the electronic distribution transforming cabinet in the submerged manner, the fire resource can be rapidly, exactly and effectively detected and extinguished only depending on one fire detecting tube introduced with the pressure and the fire extinguishing agent container bottle so as to combine the alarm and the fire extinguishing into the integration.

The invention discloses a preparation method of heptafluoropropane, which comprises the following steps: mixing 1,1,1,2,3,3,3-heptachloropropane and gasified anhydrous hydrofluoric acid, preheating, reacting in a catalyst-filled tubular fixed bed reactor, and rectifying to obtain heptafluoropropane, wherein the reaction temperature is 230-380 DEG C, the reaction pressure is 2-30atm, and the time of the gas raw material passing through the catalyst surface is 9-40 seconds; the mol ratio of the 1,1,1,2,3,3,3-heptachloropropane to the anhydrous hydrofluoric acid is 1:5-1:10; and the catalyst is a transition metal salt, aluminum oxide or activated carbon is used as a support. The preparation method of heptafluoropropane has the advantages of simple steps and low production cost.

The invention provides an environment-friendly mixed working medium which is composed of four components including, by mass, 4%-72% of a first component, 4%-76% of a second component, 4%-44% of a third component and 4%-76% of a fourth component, and the mass ratio is based on the total mass of the environment-friendly mixed working medium; wherein the first component is trifluoromethyl iodide (R13I1); the second component is 3, 3, 3-trifluoropropene (R1243zf); the third component is one of 1, 1, 1, 2-tetrafluoroethane (R134a) and 1, 1, 1, 2, 3, 3, 3-heptafluoropropane (R227ea), and the fourthcomponent is any one of 2, 3, 3, 3-tetrafluoropropene (R1234yf), 1, 1-difluoroethane (R152a) and trans-1, 3, 3-tetrafluoropropene (R1234ze (E)); the GWP of the refrigerant, namely the environment-friendly mixed working medium, is smaller than or equal to 600, the ODP is 0, the refrigerant has low flammability or incombustibility, and the problems that an existing refrigerant replacing R134a is weak in flammability and low in system refrigerating capacity can be solved.

The invention discloses an efficient thermal management energy storage container, and relates to the technical field of energy storage containers. An intelligent regulation and control host is arranged between a high-pressure cabinet and a heptafluoropropane cabinet and located opposite to a battery rack; a plurality of vertical air outlet pipes are arranged between the battery modules of the battery rack at intervals, each vertical air outlet pipe is provided with a plurality of lateral air outlets which are uniformly distributed in the vertical direction, and the lateral air outlets blow aircorresponding to the battery modules; the T-shaped air duct is horizontally arranged, an air duct inlet located at the tail end of the T-shaped air duct communicates with the cold air outlet of the intelligent regulation and control host, and a plurality of air duct outlets are formed in the front end of the T-shaped air duct, correspond to inlets of the vertical air outlet pipes and communicatewith the inlets. Air circulation in the container is promoted, external cold air is continuously input to replace internal hot air, and therefore effective cooling is achieved.

The invention relates to a quick dismounting-mounting low-temperature heptafluoropropane pipe-network-free fire extinguishing device. A bottle group cabin is arranged in a housing; the tops of two cabin doors are arched; semicircular pipe protection ports are formed at the arched tops; after the two cabin doors are closed, the two semicircular pipe protection ports are merged into a complete circular pipe protection port; two shaft brackets are arranged on a disk-shaped steel plate at the front of a bottom plate; a plurality of rollers are mounted on the two shaft brackets; a fire extinguishing agent bottle group is moved by horizontal rolling of the rollers; four American bracing frames are arranged on a lower plane of the bottom plate; a pedal hydraulic lifting mechanism is arranged in the middle of the lower plane of the bottom plate, and comprises a hydraulic pump, a hydraulic cylinder, a bracing arm, a lifting arm, a pedal plate and a manual unloading control rod; and the lifting arm is used for mounting and dismounting the fire extinguishing agent bottle group. The fire extinguishing device has the characteristics that the fire extinguishing device is quick to dismount and mount, pipe-network-free and movable. The fire extinguishing device is particularly suitable for operation in a narrow space, can allow a heptafluoropropane fire extinguishing agent to generate good atomization performance at a low temperature, can achieve a total flooding effect of the fire extinguishing agent in a protection space, and can extinguish a fire in the protection space.

The refrigerant consists of 1, 1, 1, 2-tetrafluoroethane, 1, 1, 1, 2, 3, 3, 3-heptafluoropropane and chlorobifluoromethane or 1, 1, 1-trifluoroethane. The present invention can meet the special requirement of centrifugal cooling water set on the substitute in molar mass, refrigerating amount unit volume, exhaust density of compressor and other parameters. The present invention makes the centrifugal chiller not only operate normally in designed work state but also adapt the load change. The present invention coincides with the requirement of protecting ozone layer and reducing green house effect. The refrigerant may be refilled directly and may be used as the substitute of available Freon-12 in centrifugal chiller.

The invention belongs to the technical field of electrical cabinets, and particularly relates to a power electrical cabinet. The cabinet comprises a cabinet body and a cabinet door; the cabinet door is mounted on the cabinet body, and a handle is arranged on the cabinet door; a mounting cavity is formed in the cabinet body; a plurality of placing plates are fixedly mounted in the mounting cavity;an electrical element is fixedly mounted on the placing plate; a heat dissipation pipe is fixedly installed on the upper surface of the cabinet body; a storage cavity is formed in the cabinet body; the storage cavity is located above the mounting cavity; a heptafluoropropane fire extinguishing agent is compressed and stored in the storage cavity; the storage cavity is communicated with the mounting cavity through a switch module; after the temperature borne by the switch module exceeds a certain limit, the switch module is automatically started to communicate the mounting cavity with the storage cavity. The cabinet is simple in structure, dust can be effectively prevented from entering the cabinet body, meanwhile, when a fire occurs in the cabinet body, a channel for outside air to enter the cabinet body can be blocked, and oxygen supply of an ignition point in the cabinet body is blocked.

The invention belongs to the technical field of refrigerants, and particularly relates to a refrigerant replacing R-134a and a preparation method and application thereof. The refrigerant is prepared from the following components in parts by weight: 16 to 38 parts of fluoroethane, 10 to 28 parts of Z-1,2,3,3,3-pentafluoropropylene and 40 to 75 parts of 1,1,1,2,3,3,3-heptafluoropropane. The preparation method comprises a step of mixing the components in a vacuumized mixing tank according to the amount of a formula to obtain the refrigerant capable of replacing R-134a. The refrigerant (R-469) replacing R-134a provided by the invention has the effects of zero ozone depletion value (ODP) and extremely low greenhouse effect (GWP), and is energy-saving and environment-friendly.

The invention provides a steel cylinder design method and system of a fire extinguishing combined distribution system, a medium and equipment. The steel cylinder design method of the fire extinguishing combined distribution system comprises the steps that the fire extinguishing agent design usage amount of multiple protection areas is determined in the combined distribution system; one of the steel cylinders of all models are selected as a steel cylinder of a preset model; the steel cylinder is a steel cylinder for heptafluoropropane gas fire extinguishing; the number of the steel cylinders needed by the combined distribution system is determined according to the fire extinguishing agent design usage amount and the filling amount range of the steel cylinders; and after the number of the steel cylinders is determined, all the steel cylinder design schemes meeting the preset steel cylinder model selection rule are screened. According to the steel cylinder design method and the system ofthe fire extinguishing combined distribution system, all steel cylinder type selection design schemes can be provided for designers, the designers can comprehensively analyze and evaluate the design schemes, the minimum value of the steel cylinders and the minimum value of the filling amount of the steel cylinders needed by the whole protection area are determined, and therefore the steel cylindertype selection design scheme with the lowest manufacturing cost is determined.

Refrigerant compositions are provided which include: (a) pentafluoroethane or trifluoromethoxydifluoromethane or hexafluorocyclopropane or mixtures thereof, in an amount from about 60 to about 70% by weight based on the weight of the composition; (b) 1,1,1,2- or 1,1,2,2-tetrafluoroethane or trifluoromethoxypentafluoroethane or 1,1,1,2,3,3-heptafluoropropane or mixtures thereof, in an amount from about 26 to 36% by weight based on the weight of the composition; and (c) an ethylenically unsaturated or saturated hydrocarbon, optionally containing one or more oxygen atoms, having a boiling point from −12° C. to +10° C., or a mixture thereof, or a mixture of one or more of the hydrocarbons with one or more other hydrocarbons or ethers, said mixture having a bubble point from −12° C. to +10° C., in an amount from about 1% to 4% by weight based on the weight of the composition. Also provided is a process of refrigeration using the refrigerant compositions and a refrigeration apparatus containing the refrigerant compositions.

The invention discloses a real-time detection device and method for the leakage rate of a bottled high-pressure heptafluoropropane fire extinguishing agent. The device comprises a measurement cavity and a vacuum fixing cavity which are installed on a to-be-measured bottle body, the measurement cavity is formed by closing a measurement cavity left shell and a measurement cavity right shell, and thevacuum fixing cavity is formed by closing a vacuum fixing cavity left shell and a vacuum fixing cavity right shell; and the measuring cavity left shell and the measuring cavity right shell as well asthe vacuum fixing cavity left shell and the vacuum fixing cavity right shell are connected and closed through shell fixing components. The vacuum air pump vacuumizes the measuring cavity and the vacuum fixing cavity by being connected with the first connector and the second connector, and the vacuum fixing cavity and the external environment form a pressure difference so as to be connected to themeasuring bottle body in an adsorption mode. Under the condition that the function of the bottled high-pressure heptafluoropropane is normally achieved, the small leakage amount of the bottled high-pressure heptafluoropropane can be collected for a long time, the accumulated leakage amount of the bottled high-pressure heptafluoropropane can be quantitatively measured, the measurement precision ishigh, and installation and operation are easy and convenient.