471 results about "Burn out" patented technology

The invention discloses a compression-resistant explosion-proof cable, which comprises conductors, an inner protective layer, an insulating layer, a shielding layer, a filling layer, a belting layer, an armor layer and an outer sheath, and is characterized in that a plurality of groups of buffer layers are arranged between the belting layer and the armor layer in a sleeving manner, and the plurality of groups of buffer layers are distributed at equal intervals along the length direction of the cable. Through the arrangement of a fire extinguishing agent and flame-retardant cotton, when a fire disaster occurs and a buffer layer catches fire, flames are blocked by the flame-retardant cotton in a buffer cavity, so that the flames burn the elastic piece in an extruded state, and when the elastic piece in the extruded state is burnt out, the fire extinguishing agent in the elastic piece can be rapidly sprayed out through the internal and external pressure difference to extinguish the flames; high temperature is prevented from being conducted to the conductor and the insulating layer, working time is prolonged, flame is prevented from continuously burning to damage the conductor, when the whole cable is twisted, resistance is formed through the elastic force of the elastic piece and the guide block, the cable is prevented from being twisted to damage the conductor, and therefore the safety of the cable is improved, and the service life of the cable is prolonged.

The invention discloses a composite efficient heat dissipation type modular data center, and belongs to the technical field of data centers, the composite efficient heat dissipation type modular data center comprises a data module and a data cabinet body provided with a liquid cooling center and an air cooling center, an integrated data seat is arranged in the data cabinet body, and a liquid cooling pipe distribution chamber is arranged between the back of the integrated data seat and the data cabinet body; the integrated data base is provided with a plurality of module slots for the data modules to be inserted, and the side walls of the two sides of the opening of the data cabinet body are provided with wind blocking partition plates. Through the combined design of liquid cooling and air cooling, when a data module in the data center is burnt down due to a fault, particulate matters generated by the data module can be rapidly sucked away by strong suction force generated by the air suction opening in the air blocking partition plate and are discharged through the air backflow cavity; particulate matters generated by burning are prevented from being blown away by air cooling airflow and polluting adjacent health data modules, and the risk of secondary pollution and the cleaning difficulty in the maintenance process are greatly reduced.

The utility model discloses a shell assembly, a lighting lamp holder and a head lamp device, the shell assembly is applied to the lighting lamp holder, the shell assembly comprises a rear shell, a front shell and a sealing piece, the front shell comprises a first shell and a second shell, the first shell is connected with the rear shell, and the first shell and the rear shell define a containing cavity; the second shell covers the outer side of the first shell and is integrally formed with the first shell; the sealing piece is located in the containing cavity and arranged at the edge position of the first port of the first shell, and part of the second shell penetrates through the first shell and is integrally formed with the sealing piece. The shell assembly in the design has good sealing performance, and the possibility that water vapor enters the interior of the lighting head lamp to burn out electronic components can be effectively reduced.

The invention relates to the technical field of waste incineration, in particular to a miniaturized rake type multistage air supply pyrolysis gasification furnace which comprises a support, a furnace body, a stepped cascade grate, an air supply pipe, two connecting pipes, a plurality of air distribution pipes, a plurality of material pushing shovels, a plurality of crushing blades, two slag scraping assemblies, a discharging assembly, a power assembly and an air supply assembly. The furnace body is provided with a feeding hole and a smoke outlet; the slag scraping assembly comprises a mounting plate, an axial material scraping shovel, an axial spring and a guide column, the mounting plate is fixedly connected with the corresponding air distribution pipe, one end of the guide column is fixedly connected with the mounting plate, the other end of the guide column is in sliding connection with the axial material scraping shovel, and the two ends of the axial spring are fixedly connected with the mounting plate and the axial material scraping shovel correspondingly; in this way, the technical problems that in the prior art, when a pyrolysis gasification furnace for waste incineration is used, the stirring, crushing and mixing effects are poor, and when materials are discharged after burning out, ash residues are prone to caking and adhering to the grate, and consequently normal discharging cannot be achieved are solved.

A fusing type disengaging device of a wind power blade turbulent flow element is characterized in that a half rope ring, close to one side of a hub, of a rope is arranged in a rope winding ring groove in the outer wall of an end cover of a sleeve in a sleeving mode, a fusing assembly in the end cover is provided with a power supply device and a plurality of conducting strips, and conduction can be avoided through the elastic force of a torsional spring in a locking state; the pawl disc can rotate relative to the ratchet wheel disc to the separation position where the pawl and the ratchet are mutually blocked, at the moment, due to the fact that the conducting strips stay to the mutual contact position after rotating, the conducting parts at the two ends of the power supply device can be mutually conducted to form a heating loop, and heat of the heating loop can be transmitted to the rope winding ring groove to burn out the positioning rope. Therefore, the positioning rope can be separated from the end cover, the turbulent flow element can be reliably and efficiently separated from the wind power blade, an operator only needs to pull the traction rope at will, and the workload in the wind power blade installation process is greatly reduced.

The invention relates to the technical field of power distribution equipment, and discloses an alternating current acquisition device and method for a transformer area intelligent fusion terminal, the device comprises a device body, the lower part of the device body is provided with a support, and the top of the support is symmetrically provided with chutes. According to the device, after the transformer is on fire, the device body is far away from the transformer, the device body is prevented from being burnt out by the on-fire transformer, the telescopic cover can be pulled open in the far-away process, the device body can be protected, if accumulated water exists at the falling position of the device body, the accumulated water can be isolated from the device body, and the device body is protected. The protective shell, the sealing strip and the wedge-shaped plate are matched to wrap the lead screw, so that the lead screw is prevented from being in contact with external humid air to be rusted, normal use of the lead screw is guaranteed, it is further guaranteed that the telescopic cover can be smoothly pulled open, the protective shell can be separated while the telescopic cover is pulled open, and the service life of the device is prolonged. And the transverse plate can smoothly move along the screw rod.

The high-frequency welding machine workbench comprises a rack, a liquid storage tank is arranged on the rack, a liquid storage tank is arranged in the liquid storage tank, the top of the liquid storage tank is open, elastic clamping assemblies are arranged in the liquid storage tank, and the two elastic clamping assemblies distributed oppositely are used for clamping a heat exchanger shell; and the infusion pump is connected with the water tank and the liquid storage tank. The water cooling device is novel in structure, good in water cooling effect, economical and practical, the induction coil is not prone to being burnt, and welding quality of finished products is improved.

The invention discloses a waste liquid incineration device for waste lye, distillation residues, organic waste solvents and the like, and relates to the technical field of chemical hazardous waste treatment, the waste liquid incineration device comprises an incineration part, a waste heat recovery part, a flue gas up-to-standard emission treatment part and an incineration residue recovery part; the organic waste solvent, distillation residues and waste alkali liquor are burnt out together, and due to the fact that the calorific value of the organic waste solvent is high, auxiliary fuel natural gas is needed for starting and baking a furnace and an incandescent light, and the auxiliary fuel natural gas is not needed under the normal working condition; the heat insulation incinerator is arranged above one side of a cooling chamber of the waste heat boiler with the U-shaped membrane type wall structure, the membrane type wall tube panel with the Z-shaped structure penetrates through the two cooling chambers of the waste heat boiler with the U-shaped membrane type wall structure, and high-temperature flue gas with the temperature higher than 1100 DEG C can be cooled to the temperature lower than 300 DEG C; according to the incinerator, the U-shaped membrane wall structure waste heat boiler and the Z-shaped structure membrane wall tube panel structure, NaOH matter state change and adhesion in waste alkali liquid are fully considered, it is ensured that the system can reliably, safely and stably run, and the system has the characteristics of being environmentally friendly, capable of saving energy and capable of achieving resource utilization and energy regeneration.

Apparatus and methods are disclosed which are capable of being used to determine filtration efficiency of a filter body even in a clean state. Methods of determining a filtration efficiency of a filter including forcing an inlet flow comprised of a gas (such as air) flow into the inlet end of the filter at a set flow rate, introducing particles such as smoke particles into the inlet flow, and optically counting the number of particles entering and exiting the filter during a sampling event, such as with diffraction based optical particle counters positioned upstream and downstream of the filter. Preferably the gas flow is a soot-free flow stream which does not load the honeycomb filter body with contaminants that need to be removed or burned out. The filter body can thus remain in an essentially clean state even after testing its filtration efficiency.

The invention belongs to the technical field of waste incineration, and particularly relates to a waste classification incineration device which comprises a base frame, a treatment cavity, an incineration cavity and a classification cavity are sequentially formed in the base frame from bottom to top, and the treatment cavity is formed in the left side of the incineration cavity. By arranging a transfer frame and a scraping plate, when waste is incinerated, smoke can be transferred into the incineration cavity through an exhaust pipe to be continuously incinerated, the smoke combustion efficiency is improved, the smoke is diluted to be below the safe concentration, classified treatment of solid waste and smoke waste is achieved in the incineration cavity, and by means of the circulation mode, the environment is protected, and the environment is protected. After incineration is finished, the influence of exhausted smoke on an ecological system can be greatly reduced, in the process that waste is burnt out, slag and fly ash can be classified through a screen, large slag which cannot be burnt can be located at the upper end of the screen, then the slag located on the screen can be recycled through automatic movement of a scraping plate, and the waste is recycled. And subsequent reutilization is facilitated.

The utility model discloses a positive pressure air-assisted feeder capable of preventing material return, which comprises a material box and a feeding mechanism which are arranged on an embankment, a conveying pipeline is connected with a scattering mechanism in a pond, and the feeding mechanism comprises an electric appliance control box which is in signal connection with a high-pressure vortex fan, a blanking airlock and a driving motor of the scattering mechanism. A through hole in the upper surface of the conveying pipeline is communicated with a discharging port of the discharging air lock, and an air outlet of the high-pressure vortex fan is connected with a check valve device and then connected with a starting port of the conveying pipeline. The check valve device is additionally arranged on the front side of the fan, a motor forward rotation valve is opened to blow air smoothly, a motor reverse rotation valve is closed, feed cannot be sucked back into the fan, and the situation that a motor is burnt out due to the fact that a motor wire is connected reversely and reversely to suck air is avoided.

The invention discloses a biomass double-hearth combustion furnace with a direct-flow burner and a rotational-flow burner arranged at the bottom, and relates to the technical field of combustion equipment. The problems that an existing combustion device is insufficient in adaptability to the particle size of biomass particles, and large-particle biomass is difficult to burn out completely are solved. A direct-current burner is connected with the outer wall of an inner-layer furnace and the inner wall of an outer-layer furnace through a posture adjusting assembly, a turbulent burner and an inner-layer furnace combustion chamber which are embedded inside and outside are installed at the bottom of the inner-layer furnace, a through turbulent burner is installed at the bottom of the inner-layer furnace combustion chamber, and a third smoke exhaust channel is formed in the upper portion of the inner-layer furnace. An outlet of a first smoke exhaust channel in the upper portion of the outer-layer furnace is communicated with a third smoke exhaust channel, an outlet of a second smoke exhaust channel is communicated with an inlet of a cyclone separator, an outlet in the upper end of the cyclone separator is communicated with an inlet of a turbulent burner through a combustible gas connecting pipeline, and an outlet in the lower end of the cyclone separator is communicated with a combustion chamber of the inner-layer furnace through a carbon residue channel. The biomass burner is used for achieving sufficient burning of large-particle biomass, and the burn-off rate is increased.

The utility model belongs to the technical field of electronic components, and particularly relates to an energy storage charging and discharging overload fuse structure, which comprises an insulating base, a fixing plate, a contact terminal, a fusible core and a shell. The contact terminal includes an elastic contact bracket and a contact plate. The two contact plates are arranged in parallel at an interval and form a plug-in groove. According to the energy-storage charge-discharge overload fuse structure provided by the invention, one end of the fusible core is inserted into the insertion groove and is in crimping contact with the two contact plates, so that the contact area of the fusible core and the contact plates is increased, heat on the contact plates can be quickly transferred to the fusible core, and when a circuit is disconnected, the fusible core can be quickly burnt out, the circuit is disconnected, the circuit is prevented from being burnt out, and the service life of the fuse is prolonged. The safety is improved, when the fuse is damaged or needs to be replaced, the fuse does not need to be disassembled, the fuse is directly pulled out, a brand-new fuse is inserted, repeated disassembly and installation of fuse bolts are reduced, and therefore the fuse can be replaced more conveniently and rapidly.

The invention discloses a waste gas purification method, and belongs to the technical field of environmental protection. The method comprises the following steps: converting nitrogen-containing substances into NOO and adding the NOO into a high-temperature non-combustion area at the tail end of a hearth or the front end of a flue in combustion equipment, wherein fuel is burnt out; nO is cracked in the region to generate active free radicals; the free radicals oxidize NO in the flue gas to generate NO, and oxidize SOO, CO and VOCs to generate oxidation products; continuously cracking the generated NOs to form chain circulation; and the oxidation product is removed in a subsequent purification system. The NOs comprise pure NOs and dimers NO (nitrogen tetroxide) thereof, and NO is decomposed into NOs to participate in the reaction at high temperature. According to the invention, by optimizing the NO adding position, collaborative purification of multiple pollutants such as NOx, SOs, CO, VOCs and the like is realized, a reducing agent does not need to be added, ammonia escape is avoided, the investment and operation cost is low, and the method is particularly suitable for treatment of high-concentration CO and VOCs flue gas in industries such as coking and the like.

The present invention discloses a dual-pulse test system, which is configured to include: a load inductor, a test power supply is connected to a power device under test through the load inductor; a first freewheeling device, after the power device under test is tested, it forms a freewheeling loop with the load inductor; a pulse generator, which is used to provide the dual pulses required for testing the power device under test; and a failure protection circuit, when the power device under test is in a failure state, it cuts off the test power supply and constructs a freewheeling loop to make the loop current no longer increase. The present invention is configured with a failure protection circuit, which can timely cut off the power supply when the power device under test is in a failure state, and can form a freewheeling loop to realize that the loop current no longer increases, preventing the device from being burned out due to the failure of the power device under test, and playing a protective role.

The utility model belongs to the technical field of powder spraying equipment, and particularly relates to a powder spraying machine which comprises a shell and a fan arranged in the shell, the fan comprises a machine shell, an impeller arranged in the machine shell and a driving motor driving the impeller to rotate, a first cavity and a second cavity which are not communicated are arranged in the shell, the machine shell is arranged in the first cavity, and the fan is arranged in the second cavity. The driving motor is arranged in the second cavity. Powder can be effectively prevented from being accumulated in the driving motor, the ventilation and heat dissipation effects of the driving motor are good, the temperature of the driving motor is not prone to rising, the working efficiency of the driving motor is high, the driving motor is effectively prevented from being burnt out, and the service life of the driving motor is long.

The invention relates to a never-refueled bearing, belongs to the field of bearing manufacturing industry, is used for various mechanical equipment, and solves the problems that the conventional bearing can be quickly heated and burnt out under the condition of no lubricating oil, and the bearing with the novel structure does not generate heat when rotating at a high speed, does not need to add lubricating oil and graphite, and is low in cost. According to the technical scheme, four small rollers are used for replacing a large roller, the four small rollers can play a role in bearing and rolling and isolating the large roller, the technical structure is applied to the bearing, the service life is prolonged, the bearing capacity is improved, and the original starting temperature of the bearing can be kept under the condition of no lubrication and during high-speed rotation.

The invention relates to the technical field of batteries, in particular to an intelligent energy storage battery box based on an electric power supply, which comprises an energy storage box, a handle is fixedly connected to the energy storage box; the energy storage box is provided with air outlet grooves, and the upper end and the lower end of each air outlet groove are lower than the bearing frame. The toxic smoke is filtered through water, so that the toxicity of the toxic smoke is effectively weakened, meanwhile, the problems that open fire generated by spontaneous combustion of the battery burns out of the energy storage box, objects beside the energy storage box are ignited and the property loss of people is expanded can be solved through water, and the using effect of the energy storage device is improved; under the action of the torsional spring on the sealing door, the sealing door is quickly bounced open, and meanwhile, the sealing door is kept in an open state under the action of the torsional spring, so that the sealing door is prevented from being closed again under the action of gravity.

The utility model discloses a spray gun which comprises a gun head, an air return pipeline is arranged in the gun head, one end of the air return pipeline is communicated with an air channel in the gun head, and the other end of the air return pipeline is communicated with an inner cavity of a spray can connected to the gun head. And the other end of the air return pipeline is bent to form a bent part. The spray gun can effectively prevent paint from entering the air duct from the air return pipeline, prevent the motor from being burnt out, and ensure the normal use of the spray gun.

The utility model relates to a high-power ventilation motor, which adopts a stator structure arranged in a shell. The rotor structure is arranged in the stator; the stator structure and the shell are arranged in parallel; heat dissipation is performed through heat conduction of the stator structure; the stator structure and the shell are arranged in parallel, the heat dissipation function can be enhanced, and the problems that in an existing high-power ventilation motor, due to the fact that the stator structure is designed in the shell, the power of the ventilation motor is large, the generated heat is large, and heat is conducted and dissipated through the shell, the temperature of the whole motor is usually increased abnormally; and the motor stator structure is seriously burnt.

In order to solve the problem that it is difficult to obtain modified activated carbon meeting working condition requirements on the premise that the safety of activated carbon is guaranteed through an existing activated carbon modification means at a single high temperature, the invention discloses a variable-temperature modification method for activated carbon. In the heating stage and / or the cooling stage, oxygen-containing gas is subjected to auxiliary temperature modification, that is, effective oxygen-containing functional groups capable of increasing the denitration rate can be obviously increased on the activated carbon on the premise of ensuring that the activated carbon is not burnt out through a variable temperature type modification means of main temperature modification and auxiliary temperature modification; meanwhile, the volatile matter content of the modified activated carbon is relatively stable, and working condition requirements are met.

This invention discloses an electric tool. This electric tool solves the problem of motor overheating and burning out during prolonged operation of electric tools in related technologies. During operation, the electric tool utilizes a closed-loop current compensation control circuit formed by the motor, current conversion module, current compensation module, vector control module, and motor drive module. The current compensation module adjusts the reference current input to the vector control module to a minimum and make it adjustable. Furthermore, the closed-loop current compensation control circuit automatically adjusts the compensation current under different loads, effectively reducing bus current and phase current, thereby reducing motor overheating and protecting the motor and electric tool from damage due to excessive or unadjustable current.

The utility model provides a purple sand kiln based on pine branch fuel. The purple sand kiln comprises a feeding assembly and a deslagging assembly. Compared with the problems that in the using process of a traditional purple sand kiln, once the situation that no person works when charging or slag removing is needed, the temperature of the kiln is unbalanced, and therefore rapid charging and rapid waste slag removing are inconvenient to achieve, the purple sand kiln has the advantages that the charging structure and the slag removing structure are arranged, and the waste slag removing efficiency is improved; pine branches in the feeding structure are poured below the furnace bottom, so that the rapid feeding effect can be achieved, meanwhile, waste residues burnt out at the furnace bottom can be removed and collected through the slag removal structure, and the purpose of rapidly removing the waste residues can be achieved.

The invention provides a fuel injection quantity determination method and device of a fuel system, a program product and a vehicle, and the method comprises the steps: determining a current misfire signal of an engine, and updating a misfire failure count of a corresponding engine cycle period according to the current misfire signal; determining whether the misfire failure count is greater than or equal to a preset function threshold; the preset function threshold value is smaller than a preset misfire fault threshold value; and if the misfire failure count is larger than or equal to the preset function threshold value, the fuel system is switched from the closed-loop control mode to the open-loop control mode, and the target fuel injection quantity of the fuel system is determined according to the open-loop control mode. According to the method, the fuel system is switched from the closed-loop control mode to the open-loop control mode under the condition that the engine is on fire but no fire fault is caused, so that the fuel injection quantity of the fuel system is prevented from being controlled by continuously using a long-term fuel correction value with deviation, and the risk that a catalyst is burnt out can be reduced.

The invention discloses a hot water circulating pump with couplings, and relates to the field of centrifugal pumps, the hot water circulating pump comprises a base, the top surface of the base is fixedly connected with a base plate, a protective cover, a first support and a pump body, and the end face of the pump body is provided with a machine seal gland. Therefore, maintenance cost is reduced, potential safety hazards are reduced, the coaxiality calibration process is simplified, repeated measurement and adjustment of the position of the motor are not needed, time and labor are saved, coaxiality can be guaranteed, overload protection can be achieved, overload burning of the motor can be avoided, safety accidents are reduced, the operation safety of the whole hot water circulation system is improved, and the service life of the hot water circulation system is prolonged. And overload protection can be adaptively changed according to the size of the motor, so that coaxiality calibration and overload protection adjustment are synchronously carried out, secondary measurement and adjustment are not needed, and the automation degree of the device is improved while time and labor are saved.

The invention is a ship with a flue gas Carbon Dioxide capture and storage plant, said ship comprising a main engine (1) such as a slow running Diesel engine (1) providing flue gas (FG). The flue gas (FG) is led via a flue gas heat exchanger (6) with a thermal fluid exit (5) to a re-boiler (22), said flue gas heat exchanger (6) arranged for cooling said flue gas (FG). Further cooled flue gas (FG) led into a turbine compressor (9) compressing it up to a compressed flue gas (CFG) . The turbine]compressor (9) may be common-axial with a turbine expander (10), said expander (10) for expanding resulting CO2-reduced flue gas (CRFG). The compressed flue gas (CFG) led into a high pressure shell of a HTHE (14) and further to a connected high pressure shell of a combustion chamber (13) enveloped by a perforated inner wall for receiving said compressed flue gas (CFG). The combustion chamber (13) is provided with a fuel feed (11) and a pre-mix gas burner (12) for afterburning said compressed flue gas (CFG), wherein said afterburning of said CFG also burns out remaining methane from said slow running Diesel engine, resulting in hot afterburned compressed flue gas (ACFG) thus enriched in CO2, e.g. of 600 Celsius. The afterburned compressed flue gas (ACFG) is heat exchanged in said HTHE with returning resulting CO2-reduced flue gas (CRFG). The CO2-reduced flue gas (CRFG) as such shall be heated to e.g. 550 Celsius to go to said turbine expander (10). The cooled afterburned compressed flue gas (ACFG) is sent through one or more CO2-absorber columns (20) exchanging CO2 into a K2CO3 / water solution, forming CO2-reduced flue gas (CRFG) which is returned at e.g. 94 Celsius via a re-humidifier (19), via at e.g. 140 Celsius through said LTHE (17) and further at e.g. 300 Celsius via said HTHE (14) to about 550 Celsius and to said expander (10) generating electrical energy at generator (8). The CO2-absorber (20) leading said CO2-enriched absorber solution to a CO2-stripper (21), operating at e.g. 1 Bar and exporting CO2 to a CO2-compressor (26) to a CO2-export line (28) to onboard CO2 pressure tanks.

The invention relates to a method for switching kiln bodies in a co-current regenerative shaft kiln (1), comprising the following steps: a, operating a first kiln body (2) as a combustion kiln body and a second kiln body (2) as a regenerative kiln body, b, stopping the supply of fuel through a first fuel supply line, thereby causing the fuel in the first kiln body (2) to burn out, c, closing a second exhaust gas outlet (6), after the start of step c and before the end of step c, the following steps d to f are started: d opening the second combustion gas inlet (12), e closing the first combustion gas inlet (12), f opening the first exhaust gas outlet (6), g starting the fuel supply through the second fuel supply line, whereby the second kiln body (2) is operated as a combustion kiln body and the first kiln body (2) is operated as a regeneration kiln body.

The utility model relates to soaking pit equipment with multiple burners, branch furnace chambers, mutual heating and smoke return circulation. The soaking pit equipment comprises a furnace body unit, a combustion unit, a sealing unit, a smoke exhaust unit and a control unit, the furnace body unit comprises a furnace cover and a furnace pit, and a common wall is arranged in the furnace pit and divides the furnace pit into a plurality of branch furnace chambers; the combustion unit comprises a burner, and the burner is arranged at the upper part of the end wall of each branch furnace chamber; the sealing unit comprises a soft seal and a hard seal; the device has the advantages that high-temperature flue gas is injected under pressure to be returned to a furnace for circulation, the high-temperature flue gas is burnt out for the second time, and therefore the back faces of steel ingots leaning against a wall are heated, the steel ingots in a furnace pit are evenly heated, the heat efficiency is improved, and the energy consumption is reduced. The steel ingot is heated on both sides of the female and male surfaces, the heating speed is high, the heat energy utilization rate is high, the heat efficiency is high, the labor intensity of workers is reduced, and the safety is improved.

The utility model discloses an electric heating module which comprises an electric heating main body, a cavity is arranged in the electric heating main body, and an electric heating device used for heating liquid and a safety control device used for protecting the electric heating device from being burnt out due to overheating are arranged on the electric heating main body. An inlet mechanism and a discharge mechanism are arranged on the electric heating body, the inner end and the outer end of the inlet mechanism are higher than the inner surface and the outer surface of a cavity of the electric heating body respectively, and the inner end and the outer end of the discharge mechanism are higher than the inner surface and the outer surface of the cavity of the electric heating body respectively. The peripheral face of the blocking mechanism is of a cambered surface structure. The problem that dirt is easily generated and a pipeline is blocked when liquid is heated is solved, the user experience is improved, and better market competitiveness is achieved.

The utility model relates to the technical field of burner equipment, and discloses a thermal power plant burner flame detection device which comprises an outer sleeve, an inner sleeve and a lens assembly, radial intervals are arranged between the outer sleeve and the inner sleeve and between the inner sleeve and the lens assembly, a first airflow channel is formed between the outer sleeve and the inner sleeve, and a second airflow channel is formed between the inner sleeve and the lens assembly. The inner sleeve and the lens assembly form a second airflow channel, the outer sleeve is provided with an airflow inlet communicated with the first airflow channel, and the inner sleeve is provided with a ventilation opening communicated with the first airflow channel and the second airflow channel; a sealing plate is further included and arranged at the rear ends of the first airflow channel and the second airflow channel in a sealed mode, a first airflow outlet is formed in the front end of the first airflow channel, and a second airflow outlet is formed in the front end of the second airflow channel. The first airflow channel and the second airflow channel form a double-layer cooling structure, cooling airflow directly cools the lens assembly, the cooling effect is enhanced, the front end of the optical fiber is prevented from being burnt out due to too high temperature, and the service life of the flame detection device is prolonged.