67results about How to "Avoid pipe bursts" patented technology

The invention pertains to solar energy application field, and provides a straight through type double-layer glass vacuum solar energy heat collection tube comprising an internal glass tube and an external glass tube disposed outside the internal glass tube. The internal glass tube is open at the two ends, a solar energy selective absorption coating is provided on the outer surface of the internal glass tube, vacuum space in which a degasser may be disposed is provided between the internal glass tube and the external glass tube, a light focusing reflective element is disposed between a backlight face of the internal glass tube and the external glass tube, and a ring-shaped expansion joint which is made of materials with a linear thermal expansion coefficient between 3*10<-6> m/m DEG C to 5*10 <-6> m/m DEG C is also provided with a U-shaped section, is disposed at the terminals of the internal glass tube and the external glass tube, and is connected hermetically with the internal glass tube and the external glass tube. Shortcomings of straight through type glass heat collection tubes in prior art, which are easy-broken and low heat-collecting efficiency, are overcome.

The invention provides an AOD convertor flue gas waste heat recovery apparatus comprising a high-temperature flue gas evaporation cooling part and a low-temperature flue gas waste heat recovery part. The high-temperature flue gas evaporation cooling part comprises a fire hole fixed segment smoke canal, a middle I segment smoke canal, a middle II segment smoke canal, a middle III segment smoke canal, an end segment smoke canal and a steam dome which are communicated one by one, and the middle I segment smoke canal, the middle II segment smoke canal, the middle III segment smoke canal, the end segment smoke canal, the steam dome and the ascending pipe and the corresponding descending pipe which are communicated with the upper side thereof together form a natural cycle system; the low-temperature flue gas waste heat recovery part comprises a pre-heater, a heat exchanger, a coal economizer, a deaerator and a water supply pump, wherein, the pre-heater and the deaerator form a natural loop through the connected ascending pipe and descending pipe for heating and deoxidizing the water in the deaerator and saving the steam consumption, the deoxidized water is then pumped by the water supply pump to the steam dome through the coal economizer, therefore, smoke temperature can be reduced sufficiently and heat can be recovered, in addition, because no recirculating pump is added to the heat exchanger singly, the electrical energy is saved.

The invention discloses a plastic composite pipe. The plastic composite pipe comprises an outer pipe and an inner pipe. Arc grooves are formed in the inner side of the outer pipe. Arc protruding parts are arranged on the outer side of the inner pipe. The arc protruding parts are arranged in the arc grooves. The thickness ratio of the outer pipe and the inner pipe is 1:1. According to the plastic composite pipe, through the inner pipe made of a polypropylene material, the composite pipe is very high in plasticity and has certain flexibility, the high pressure in the water pipe can be resisted, and the phenomenon of pipe blasting is effectively prevented; the manufacturing cost of the composite pipe is reduced due to the fact that the outer pipe is made of a polyvinyl chloride material; and the arc protruding parts are designed on the inner pipe, and therefore the inner pipe and the outer pipe are perfectly bonded together.

The invention relates to a full-automatic pressure bearing pressure-free operation system of a heat storage water tank of a water heater. The system comprises the heat storage water tank, and the outside of the heat storage water tank is connected with a cold water inlet channel and a hot water outlet channel. The system is characterized in that a normally closed solenoid valve is arranged on the cold water inlet channel; the hot water outlet channel is sequentially connected with a pressure relief pipeline in parallel, a one-way valve in series and a pressure switch in parallel in the water flowing direction; a normally opened solenoid valve is arranged on the pressure relief pipeline. The system has the beneficial effects that the interior of the heat storage water tank does not bear high pressure any more when water inside the heat storage water tank is not used; the explosion phenomenon of a tank-free solar vacuum pipe is effectively prevented; the phenomena of fatigue, corrosion and breakdown leaking of the heat storage water tank of the water storage type water heater are effectively solved; the pressure and water relief amount is reduced; the occurrence rate of flood is reduced; the frequency of electric leakage accidents is reduced; safety performance is improved.

The invention relates to a solar vacuum tube heat collector shading device and a solar water heater. The shading device comprises a vacuum tube collector and a shading mechanism arranged on the vacuumtube collector; the vacuum tube heat collector comprises a heat collector framework and a plurality of heat collecting tubes which are arranged on the heat collector framework side by side; the shading mechanism comprises an arc-shaped shading plate arranged on each heat collecting tube, and shading rotating structures connected with the shading plates; and each shading rotating structure comprises a first rotating wheel and a second rotating wheel which are arranged at the two ends of the heat collecting tubes in a rotating mode correspondingly, and the two ends of the shielding plates are connected to the first rotating wheels and the second rotating wheels. According to the scheme, when the non-heating season or the water heater is idle or the heat collection circulation is abnormal, the use safety of the solar vacuum tube heat collector or the water heater can be guaranteed.

The invention discloses a hydraulic type high-stability rubber pipe joint, and belongs to the field of pipe joints. According to the hydraulic type high-stability rubber pipe joint, through the arrangement of a hydraulic variable pipe, when fluid passes through, the hydraulic variable pipe extrudes a rubber pipe and expands towards the inner wall of an outer sleeve shell under the action of fluid pressure, an outer top ring wedge extrudes the rubber pipe, at the moment, the rubber pipe is locally deformed and falls into a corresponding concave ring wedge groove, connection between a fastening rubber pipe and the connector is extruded through the pressure of the fluid, the effect that the connection stability between the fastening rubber pipe and the connector is higher along with the increase of the liquid pressure is achieved, compared with the prior art, the situation that the connector is loosened due to liquid impact force is effectively avoided, in addition when the rubber pipe and the connector are accidentally loosened, the sealing performance is weakened, part of the fluid permeates into an early warning ring groove along a liquid guide layer, the color of a developing point is changed, therefore early warning is conducted on workers, and the occurrence rate of the pipe explosion phenomenon is reduced through timely maintenance.

The invention relates to a drainage method for a heavy-caliber oil-gas pipeline used for paving in high-fall areas after pressure testing, which aims at solving the problem of pipeline burst caused by water attack in the drainage process of the oil-gas pipeline. The technical scheme is that the drainage method comprises the steps of firstly, selecting the model of an air compressor according to fall of a laid pipeline and the diameter of the pipeline; installing a pressure gauge and a high-pressure gate valve A connected with a drainage pipe on a pressure testing sealing head A at a drainage end of a main pipeline; enabling a pressure testing sealing head B at the other end of the main pipeline to be connected with a high-pressure gate valve B and then connected with the air compressor, wherein a pipe clearing device is arranged in the pressure testing sealing head B at this time; starting up the high-pressure gate valve A to carry out natural drainage, starting up high-pressure gate valve B when the pressure descends to early warning pressure, and starting up the air compressor to enable the pipe clearing device to clear away water; shutting down the high-pressure gate valve A when the pressure descends to the early warning pressure, stopping drainage, starting up the high-pressure gate valve A again when the pressure rises to safe drainage pressure, and continuing to clear away the water; and repeating the processes until finish. The drainage method can effectively prevent the pipeline burst, and is simple in structure and convenient in operation.

The invention discloses a fully automatic building rainwater film separating and intelligent feedback back flushing system. The fully automatic building rainwater film separating and intelligent feedback back flushing system comprises a roofing, a draining pipe, an impeller waste flow device, a sewerage pipe, a full flow energy storing device, a rainwater film separating device, an intelligent feedback back flushing device and a water storing device, wherein a filter net and the roofing are leveled and located directly above the draining pipe; the draining pipe is connected with the impeller waste flow device, and a waste flow pipe is arranged on the impeller waste flow device and is connected with the sewerage pipe; the full pipe energy storing device is mounted on the draining pipe, andwater flows filling the pipe can be guaranteed to enter the rainwater film separating device; and the intelligent feedback back flushing device and the rainwater film separating device are in mutual connection and cooperation for use, and finally, rainwater filtered by the rainwater film separating device is transmitted to the water storing device through the draining pipe. The fully automatic building rainwater film separating and intelligent feedback back flushing system realizes multiple functions of separating and purifying of roofing rainwater, rainwater storage and the like, so that thepurpose of high-quality rainwater is realized. The entire system is small in size, high in security coefficient and simple in structure, has an intelligent back flushing function, and is suitable forbeing promoted extensively.

The invention discloses a pneumatic ultrahigh-pressure intelligent grouting system. The system comprises a central control unit, a slurry preparation unit, a grouting unit and a detection unit. The slurry preparation unit comprises an integrated slurry preparation barrel, a thick slurry storage barrel, a pneumatic thick slurry valve and a pneumatic clean water valve arranged on a water inlet pipeline of the integrated slurry preparation barrel; the grouting unit comprises a pneumatic grouting pump, a high-pressure valve, a slurry inlet flow meter, a slurry return flow meter, a grouting pipeline for connecting a slurry outlet of the integrated slurry preparation barrel and a grouting hole of a working face, and a slurry return pipeline for connecting a slurry return opening of the integrated slurry preparation barrel and the grouting hole of the working face; the detection unit comprises a pressure sensor, a lifting detector, a density sensor and a temperature sensor arranged in the integrated slurry preparation barrel; and the central control unit is in circuit connection with the detection unit, the pneumatic thick slurry valve, the pneumatic clean water valve, the pneumatic grouting pump, the high-pressure valve, the slurry inlet flow meter and the slurry return flow meter. Through the design, accurate control over slurry preparation and grouting is facilitated, the phenomenon of pipe explosion of a grouting pipeline is avoided, the safety of electric shock prevention of operators is improved, power energy consumption is reduced, and meanwhile the intelligent level of slurry preparation and grouting of the grouting system is also improved.

The invention relates to a solar water heater control system and a control method thereof. The control system comprises a solar water heater, a heat preservation device, a water supplementing device,an air source heat pump and a controller; the heat preservation device is connected with the solar water heater through a first pipeline, and a first electromagnetic valve is arranged on the first pipeline; the water supplementing device is connected with a first water supplementing pipeline and a second water supplementing pipeline, the first water supplementing pipeline is connected with the solar water heater and provided with a second electromagnetic valve, and the second water supplementing pipeline is connected with the heat preservation device and provided with a third electromagnetic valve; the air source heat pump is connected with the heat preservation device through a heating pipeline; and the controller is connected with the air source heat pump, the first electromagnetic valve, the second electromagnetic valve and the third electromagnetic valve. According to the solar water heater control system, the functions and the application range of the solar water heater are greatly expanded, and the solar water heater control system has wide application prospects.

The invention provides a pressure-bearing pipeline for water transportation and distribution and a preparation method, and belongs to the field of pipelines, the pressure-bearing pipeline for water transportation and distribution comprises a steel cylinder concrete pipe body, a basalt fiber composite rib is spirally wound on the outer ring of the steel cylinder concrete pipe body, and protective layers are arranged on the outer ring of the basalt fiber composite rib and the end of the steel cylinder concrete pipe body; the two ends of the steel cylinder concrete pipe body are of bell and spigot structures, the basalt fiber composite bars are fixed to one end of the pipe core through the anchoring system, and the basalt fiber composite bars meeting the tension requirement are evenly and spirally wound on the outer side of the pipe core through the pipe core rotating and lifting device. The use safety performance of the pipe is greatly improved, and the quality risks that prestressed steel bars are prone to corrosion and hydrogen embrittlement corrosion and the like are solved.

The invention belongs to the field of composite pipe. An insulation pipe sequentially comprises a nanometer silver coating layer, a porous silicone tube, a stainless steel pipe, a high temperature resistance fiber felt, a sodium silicate insulation pipe, a polyurethane foaming layer, a carbon steel layer and three PE coating layers from outside to inside; a positioning ring is arranged between thecarbon steel layer and the stainless steel pipe; the outer wall of the positioning ring extends outwards to be formed with a plurality of positioning bosses; the positioning ring is fixedly connectedto the outer wall of the stainless steel pipe in a sleeving manner; and the outer walls of the positioning bosses are fixed to the inner wall of the carbon steel layer. A production method comprisesthe following steps of stainless steel pipe preparation, composite pipe A preparation, composite pipe B preparation, composite pipe C preparation, composite pipe D preparation, composite pipe E preparation, composite pipe F preparation, composite pipe G preparation and insulation pipe preparation. The prepared insulation pipe has the advantages of strong antibacterial property, strong impact resistance, good high temperature resistance, good insulation performance, difficulty in deformation damage, long service life and the like, can be rebounded to an original state after deformation with heating and does not influence normal use of a product.

The invention relates to an intelligent electromagnetic heating type steam generator, which comprises multiple pipe bodies. The outside of each pipe body is sleeved with an electromagnetic heat generator, and the electromagnetic heat generator comprises an electromagnetic coil tube which sleeves the pipe body. The bottom of the multiple pipe bodies is communicated with a first water inlet pipe, one end of which is connected with two first water pump and the top of which is connected with a water outlet pipe. One side of the water outlet pipe, far from the first water inlet pipe, is provided with multiple steam outlets. The multiple pipe bodies are all connected with a same connecting pipe, the other end of which is connected with a second water inlet pipe. One end of the second water inletpipe, far from the connecting pipe, is connected with a second water pump. The intelligent electromagnetic heating type steam generator is environmentally-friendly and efficient, and has excellent heat insulation effect.

The invention discloses a novel mountain forest fire extinguishing truck. The novel mountain forest fire extinguishing truck comprises a truck body, and a fire extinguishing device; the truck body comprises a cab, a chassis positioned behind the cab and connected with the cab, and a carriage positioned on the chassis and detachably connected with the chassis; the fire extinguishing device is positioned in the carriage; the fire extinguishing device comprises a water storage tank, a low-pressure water supply pump connected with the water storage tank, and a high-pressure water supply pump; a first control electromagnetic valve is arranged on the low-pressure water supply pump; a second control electromagnetic valve is arranged on the high-pressure water supply pump; and the first control electromagnetic valve is connected with the second control electromagnetic valve. The fire extinguishing truck is suitable for various common fire behaviors, in particular for mountain forest fire extinguishing, breaks through the problems of difficult water taking and short water taking distance in a traditional fire truck, and is reliable in power.

The invention discloses a copper powder collection and water recovery system of a polishing and brushing machine. The copper powder collection and water recovery system comprises a plurality of water-using polishing and brushing sections, a copper powder settling pond, a press filter, an overflow water centralizing pond, a lifting pump and a water storage bucket, the water-using polishing and brushing sections are connected with a water inlet of the copper powder settling pond through first pipelines respectively, an overflow port of the copper powder settling pond is communicated with a water inlet of the press filter, a water outlet of the press filter is communicated with the overflow water centralizing pond, a water outlet of the overflow water centralizing pond is communicated with a water inlet of the lifting pump, a water outlet of the lifting pump is communicated with the water storage bucket through a second pipeline, the water storage bucket and the water-using polishing and brushing sections are communicated through third pipelines respectively, a pipeline joint is arranged in each of the first pipelines and/or the second pipeline and/or the third pipelines, and each pipeline joint is a rubber flexible soft joint. By the copper powder collection and water recovery system, recovery of copper powder containing waste copper water and recycling of clean water can be realized, production cost is saved, pipeline design can be optimized, and pipeline tearing explosion is avoided.