91results about How to "Avoid pipe burst" patented technology

The invention discloses an oil and gas pipeline intelligent internal detection device based on multi-module combined location. The device comprises an internal detector arranged inside an oil and gas pipeline and a floor marker arranged outside the oil and gas pipeline. The internal detector comprises a driving system, a magnetic leakage detecting system, a speed control system, a distance measuring system and a low frequency emitting system, wherein the driving system, the magnetic leakage detection system, the speed control system, the distance measuring system and the low frequency emitting system are relatively fixedly connected together; the floor marker at least comprises a low frequency receiving system; the low frequency emitting system is used for sending detection results obtained by the magnetic leakage detection system out of the oil and gas pipeline; the low frequency receiving system is used for receiving low frequency electromagnetic pulse signals transmitted by the low frequency emitting system. The oil and gas pipeline intelligent internal detection device based on the multi-module combined location can timely obtain the detection data of the pipeline detector and analyze the detection data and accordingly rapidly determine the defect conditions of the pipeline.

The invention discloses a method for quantitatively and online monitoring the metal wall temperature of a heating surface and the thickness of a scale cinder (scale layer) of a boiler superheater or a reheater. The method includes the steps that according to operating parameters of a boiler, flue-gas temperature and speed of partition sections in the front of a pipe are predicted and monitored through a neutral network, and based on the flue-gas temperature and the speed, the distribution of the wall temperature of the heating surface and the thickness of the scale cinder (scale layer) of the superheater or the reheater are acquired according to a heat transfer mathematical model of the heating surface. The method has the advantages that the method is simple, rapid and capable of being continuously conducted, regular automatic learning can be achieved, the method can be used for quantitatively monitoring the wall temperature of the heating surface and the thickness of the scale cinder in the actual operating process of the pulverized coal boiler, and a quantitative basis is provided for preventing pipe explosion through optimizing, adjusting and controlling thermal deviation and for managing the service life of the heating surface of the boiler.

The invention discloses a method for monitoring intra-furnace dynamic wall temperature in a high-temperature tube system of a power station boiler in the technical field of the power station boilers. The method disclosed by the invention comprises the steps of: precomputing to obtain a representative tube with the minimal allowance of intra-furnace inner wall temperature in a tube group for installation of a furnace outer wall temperature measurement and collection point; reading data required for calculation of real-time operation of the boiler, the extra-furnace wall temperature and the like from a real-time database of a power plant, and storing the data in a relational database of a local server; generating real-time dynamic calculation of intra-furnace working medium temperature and intra-furnace metal wall temperature of a superheater and reheater tube system of the power station boiler according to real-time data of the real-time operation and the extra-furnace metal wall temperature; and separating the data of a metal tube section exceeding a tube wall metal stress intensity over-temperature value part and storing the data in an over-temperature summary database. The method disclosed by the invention effectively combines dynamic online calculation with dynamic online monitoring of practical working conditions so that the technical effect of prolonging the service life of the tube system is achieved and the technical problem on preventing over-temperature tube explosion of the tube system of the power station boiler is solved.

The present invention discloses a pump pipe damping device. The device comprises a vertical pump pipe damping support and a horizontal sliding support seat. The vertical damping support is arranged a connection elbow part of a horizontal conveying pump pipe and a vertical conveying pump pipe at a first layer and is composed of a main support, a fixing pipe clamp and spring dampers. The horizontal sliding support seat is disposed on the first-layer horizontal conveying pump pipe and is composed of a support, pump pipe holders and a pulley system. The vertical pump pipe damping support realizes the aim of damping and noise reducing mainly through the spring dampers, and a pumping horizontal thrust is offset by frictional resistance generated by the pulley system of the horizontal sliding support seat and a terrace. The damping device is set up on a key position where pump pipes vibrate violently, and is used for preventing construction quality and safety accidents caused by pump pipe vibration damages, thereby bringing convenience for standardization management of construction sites and civilized construction. Meanwhile, the damping device is recyclable, and the cost is saved.

The invention provides a waste heat recovery system for a circular cement production grate cooler. The grate cooler comprises a housing and a clinker channel, wherein a thermal insulation material is arranged between the housing and the clinker channel; waste heat recovery equipment is arranged in the thermal insulation material, and comprises a barrel; a heat exchange tube is arranged in the barrel; the barrel and the heat exchange tube are in a concentric circle structure. According to the grate cooler provided by the invention, sensible heat released by a clinker in a cooling machine in a fast cooling process can be fully absorbed; energy consumption of the clinker is reduced; the waste heat utilization quantity can also be effectively improved.

The invention relates to an ejecting staged combustion W flame boiler for improving ignition and combustion of pulverized coal. The W flame boiler comprises a furnace hearth which is formed by an upper furnace hearth, a lower furnace hearth, a front furnace arch and a rear furnace arch, a plurality of secondary air nozzle groups which are arranged on the front furnace arch and the rear furnace arch, and a plurality of pulverized coal airflow nozzle groups, wherein the plurality of secondary air nozzle groups and the plurality of pulverized coal airflow nozzle groups are arranged side by side linearly, equidistantly and abreast along a width direction of a furnace, the plurality of pulverized coal airflow nozzle groups can be arranged on the furnace arches at fixed angles, an incident angle of secondary air can be adjusted, a plurality of over-fire air nozzles with adjustable incident angles can be formed in the upper furnace hearth, and two layers of tertiary air nozzles with the adjustable incident angles can be formed in water-cooled walls of front and rear walls of each furnace hearth. By adopting the W flame boiler disclosed by the invention, the combustion of the pulverized coal in the furnace can be effectively improved, the adaptive capacity of the boiler to coal types can be improved, the heat and reheat steam temperature can be effectively adjusted to reach a design value, the emission of NOx and the flue gas temperature can be reduced, slag bonding of the front and rear walls can be prevented, and the thermal fatigue existing in water-cooled walls of a combustion chamber hopper can be avoided.

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 a waste heat recovery system for a cement production grate cooler employing square equipment. The grate cooler comprises a housing and a clinker channel, wherein a thermal insulation material is arranged between the housing and the clinker channel; waste heat recovery equipment is arranged in the thermal insulation material, and comprises at least one barrel; a heat exchange tube is arranged in the at least one barrel; the barrel is a rectangle; a plane is arranged at the lower part of the barrel. According to the grate cooler provided by the invention, sensible heat released by a clinker in a cooling machine in a fast cooling process can be fully absorbed; energy consumption of the clinker is reduced; the waste heat utilization rate can also be effectively increased.

The invention discloses a soot blowing system and method for a π-type boiler flame angle. The soot blowing system utilizes the principles of pneumatic and steam fluidization to overcome the frictional force of ash deposits on the slope of the flame angle, so that the ash deposits flow to Furnace and horizontal flue and discharge. The hood type soot blower is installed on the diaphragm on the slope of the flame angle, arranged between the high temperature superheater and the high temperature reheater, passes through the upper slope of the flame angle, and is connected with the soot blowing medium delivery pipeline. The shape of the first soot blowing nozzle and the second soot blowing nozzle of the hood type soot blower is a zoom tube, which can increase the speed of the soot blowing air flow and enhance the soot blowing effect. During the soot blowing process, the compressed air firstly purges the soot accumulated on the slope of the flame angle, and then the steam purges the residual soot that is difficult to remove, and a good soot blowing effect is achieved through the composite purging mode. The invention can effectively remove the soot accumulation on the slope of the boiler flame angle, avoid excessive blow damage of the flame angle and superheater wall surface and the occurrence of pipe burst, and save energy consumption of soot blowing.

The invention discloses a heat collecting module of a metal-glass sheathing heat collecting pipe, belonging to the field of the solar thermal energy utilization technology. The current all-glass vacuum heat collecting pipe is not pressure-bearing, is easy to be explosive and is not anti-freezing, thereby being difficult to be applied to a heat collecting project; a selective heat absorption coating layer (a magnetron sputtering vacuum coating film) of the heat collecting pipe inner pipe outer surface of a vacuum heat pipe is easy to fall off under long-term basking. A vacuum glass pipe in the invention is the heat collecting module of the metal-glass suit heat collecting pipe, which does not contact working medium and is pressure-bearing and antiseptic and has high heat absorption efficiency and low heat emissivity. The heat collecting pipe comprises a glass vacuum heat preservation pipe and a metal heat collecting pipe, the heat collecting pipe is arranged in the glass vacuum heat preservation pipe, the outer surface of the heat collecting pipe is plated with copper chemically and a black nickel layer is electroplated after copper plating is carried out. Meanwhile, a flow channel blind plate is additionally arranged in a water filling circulating flow channel to separate cold and hot water working medium, and the water filling circulating flow channel is directly connected with a water filling pipe to guide cold water to directly reach the bottom part of the metal heating collecting pipe; and a new pressure-bearing connection type of connecting a collecting pipe and the heat collecting pipe is provided.

A solar comprehensive heating system capable of supplying heat and hot water integrally for a house comprises a vacuum tube solar collector, a collector water inlet pipe, a collector water outlet pipe, a heat storage pipeline, a heat exchanger, a domestic hot water pipe and a hot water use terminal. The collector water inlet pipe and the collector water outlet pipe are communicated with the solar collector. The collector water outlet pipe is communicated with the heat storage pipeline and is part of the heat storage pipeline. The heat storage pipeline is communicated with the collector water inlet pipe through connecting water pipes provides with switch valves. The collector water inlet pipe and the heat storage pipeline are connected with a low temperature radiation heating manifold through heating pipes so as to form water circulation. Water circulation between the vacuum tube solar collector and municipal heating hot water pipes are formed by the aid of the collector water inlet pipe and the heat storage pipeline. The solar comprehensive heating system is simple in structure, low in manufacture and maintenance cost, and low in maintenance difficulty.

The invention discloses an erosion test device and method with capacity of controlling temperature, angle, flow velocity and time. An outlet of a reagent bottle is connected with a first inlet of a buffer bottle through a dosing pump and a check valve in sequence, an outlet of the buffer bottle is connected with a first inlet of a two-phase valve through a centrifugal pump, a second inlet of the two-phase valve is connected with outside atmosphere, an outlet of the two-phase valve is connected with an inlet of an erosion device through a first hydraulic sensor and a flow velocity sensor in sequence, an angle controller is connected and mounted on the erosion device, a temperature sensor is fixed on the inner side wall of the erosion device, an outlet of the erosion device is connected with an inlet of a diverter valve through a second hydraulic sensor, a first outlet of the diverter valve is connected with an inlet of the reagent bottle through a diversion pump, a fluid in a second outlet flows back to a second inlet of the buffer bottle; the reagent bottle, the dosing pump, the check valve and the buffer bottle are all placed in a constant-temperature bottle, and a heater is arranged in the constant-temperature bottle. With the adoption of the device and the method, erosion temperature, angle, flow velocity and time can be automatically regulated, labor cost is reduced, an operating process is simplified, reagents are recycled, and accordingly, resources are saved.

The invention discloses an oil and gas balance controller of multi-connected air conditioner for the oil balance of compressors of at least two outdoor sets connected in parallel, wherein the oil balance controller comprises oil storage containers which communicate to the bottom of respective compressors of the plurality of outdoor sets, vent-pipes of respective compressors communicate to the oilstorage containers by an electromagnetic valve (1), every two oil storage containers communicate to one another by an oil balance connecting pipe to which each oil container communicates by an electromagnetic valve (4) and air suction pipes of respective compressors communicate by an electromagnetic valve (2), and each oil storage container communicates to the relative air suction pipes of respective compressors by an electromagnetic valve (3). The invention provides an oil and gas balance controller of multi-connected air conditioner for solving the problem of the oil balance of compressors in the various statuses.

The invention relates to a coal-fired boiler shaft flue with sonic soot blowers and belongs to the technical field of coal-fired boilers. The coal-fired boiler shaft flue with the sonic soot blowers comprises heat exchangers, a plurality of pairs of primary pipes and the sonic soot blowers, wherein the pairs of primary pipes are evenly distributed along the cross section of a boiler, one end portions of each pair of primary pipes are opposite to each other and located in the center of the boiler, the other end portions of each pair of primary pipes extend out of the wall of the boiler respectively, and the end portions, extending out of the wall of the boiler, of the primary pipes are connected with steam supplying primary pipes outside the boiler in a welding mode. The heat exchangers and the pairs of primary pipes are installed in the shaft flue in a mutually spaced mode, and the primary pipes are fixed opposite to the heat exchangers through primary pipe supports. The sonic soot blowers are installed on the primary pipes through base pipes. The coal-fired boiler shaft flue has the advantages of being efficient, safe and energy-saving, promotes safety of the boiler, and can be free from daily tedious maintenance work. The sonic soot blowers are arranged in the boiler, and are free of rotating components and reliable in sealing.

The invention relates to a two-dimensional cycling gravity heat pipe with guiding device. It is characterized in that guiding device, such as guiding plate, guiding pipe, drain pipe, impeller and collecting liquid cover so on is set in the heat pipe to make liquid in heat pipe flow on the setting route in cycling for promoting liquid steaming in evaporator, quickening gas-liquid cycling and improving heat conducting speed. Certain working material is injected in the closed cavity where the heat pipe is pumped in vacuum. When the heat pipe works, two setting cycling routes exist in the heat pipe. One is the cycling route with mutual transformation between working gas and working liquid and the other is the flowing cycling route in the working liquid.

A solar water heater adopts a pressure-bearing water tank and a vacuum heat-collecting pipe and it is characterized by setting a metal heat-conducting bar. The insert section in the upper part of the metal heat-conducting bar is plugged in the inner container of the water tank and the extension section in the lower part of the metal heat-conducting bar is plugged in the vacuum heat-collecting pipe. The inserting mouth of the metal heat-conducting bar on the inner container of the water tank forms a plugging and the mouth of the vacuum heat-collecting pipe is disposed in the insulating layer of the pressure-bearing water tank and in the preset mouth of the casing.

The invention discloses a pressure control device and method for a spraying liquid medicine in a pipeline of an orchard. The device comprises a control system, an input panel, an output panel, a frequency converter, a frequency-conversion motor, a medicine pump, a wireless pressure receiving module and wireless pressure sending nodes; the control system is connected with the input panel, the output panel, the frequency converter and the wireless pressure receiving module, the frequency converter, the frequency-conversion motor and the medicine pump are connected successively, a medicine inputend of the medicine pump is connected with a medicine pool, and a medicine output end of the medicine pump is connected with the spraying pipeline; and the wireless pressure sending nodes are arrangedin the spraying pipeline, and connected with the wireless pressure receiving module. According to the invention, a control system can adjust the frequency of the frequency converter to control the rotating speed of the frequency-conversion motor and further control the medicine output amount of the medicine pump so as to control the liquid medicine pressure in the spraying pipeline, solve the problem that traditional pipeline spraying cannot control the liquid medicine pressure effectively, and improve the spraying effect.

The invention relates to an anti-grouting-pipe-explosion monitoring and early warning system and a using method thereof. The system comprises a first pressure measuring device which is arranged at the grout outlet of a grouting pump and used for measuring a first pressure value of grout at the outlet of the grouting pump, a second pressure measuring device which is arranged at the inlet of a grouting pipe and used for measuring a second pressure value of grout at the inlet of the grouting pipe, and an early warning device which has a shell for accommodating an early warning unit, wherein the first pressure measuring device and the second pressure measuring device are pressure gauges, each pressure gauge is equipped with a threshold input device, and the early warning device sounds an alarm when the first pressure value or the second pressure value is greater than a first threshold.

A concrete pouring pump pipe bracket includes a centralizing seat and a buffer frame, wherein the centralizing seat comprises a base, four first diagonal bracing rods and first clamps, and the bufferframe comprises a square frame, four first vertical rods, second clamps and a pipe stabilizing hole, wherein the buffer frame is fixed to the rectangular square steel plate base, and base plates of the four first vertical rods of the buffer frame are welded and fixed to the square steel plate base. The concrete pouring pump pipe bracket has the advantages that a concrete pouring pump pipe bracketdevice is simple in structure and convenient to manufacture, the concrete pouring pump pipe bracket is stable in structure and suitable for concrete pouring projects of various concrete pump pipes, the impact force of the concrete pump pipes during concrete conveying is effectively reduced, the phenomenon is avoided that the excessive impact force of concrete to cause pump pipe detonation, construction safety is improved, and engineering costs are reduced.

The invention provides a solar evacuated collector tube which comprises an inner-layer glass tube and an outer-layer glass tube. A vacuum layer is arranged between the inner-layer glass tube and the outer-layer glass tube. A glass cavity is formed in the bottom of the inner-layer glass tube and communicated with the vacuum layer through a hole, an annular sealing board for connecting the inner-layer glass tube with the outer-layer glass tube is arranged in the vacuum layer, and the vacuum space below the port, in the vacuum layer, of the hole and the space above the vacuum space are isolated. The upper surface of the annular sealing board is not lower than the lower side of the port. The glass cavity contains mercury. When the temperature of the mercury is lower than 90% of the boiling point of liquid in the inner-layer glass tube at the standard atmospheric pressure, the volume of the mercury is smaller than the volume of the glass cavity; when the temperature of the mercury reaches the boiling point, mercury expands so that the glass cavity and the vacuum space above the annular sealing space are filled with the mercury. The solar evacuated collector tube has the excellent anti-explosion performance, and an explosion is not likely to happen even under the environment that a pressure relief hole is not available.

A circular tube conveyor material flow control device comprises a pre-tensioning counterweight device, a fastener, a baffle, an adjusting plate, an adjusting linkage plate, a joint ring, a shaft, a fixing plate, a fixing ring, a sealing plate, a pin shaft, a first cotter pin and a second cotter pin. The circular tube conveyor material flow control device is installed at the end of a front section of a material guiding groove B to replace a front curtain of the material guiding groove B. The baffle is made of a steel plate with the thickness being 6 mm. The three faces of the upper portion are connected with an outlet of the front section of the material guiding groove B through a flange, a rectangular opening is formed in the lower portion of the baffle. The outer side of the rectangular opening of the baffle is covered with an adjusting plate assembly. The adjusting plate and the adjusting linkage plate are connected through a fastener. The pre-tensioning counterweight device is connected with the shaft. The adjusting linkage plate is connected with the shaft through the joint ring, the pin shaft and the first cotter pin. The shaft is connected to the baffle through the fixing plate. The two ends of the shaft are sealed and welded through sealing plates. The device can effectively control material flow, the materials can uniformly enter a circular tube, the filling rate is close to a theoretical filling rate, explosion of a circular tube conveyor is avoided, and the device is applied to the field of bulk material conveying devices.

The invention discloses a cross mixed flow superheater. A superheater pipe screen comprises two sets of near center pipe screens and two sets of far center pipe screens separately arranged in a boilerin the boiler width direction; the two sets of near center pipe screens and the two sets of far center pipe screens are both connected with a superheater inlet header and a superheater outlet header;the near center pipe screens and the far center pipe screens approaching each other are connected through uniform temperature pipes; and near center pipe screen return headers with higher temperatures at the middle part of a hearth and far center pipe screen return headers with lower temperatures on two sides of the hearth are across connected, so that steam flows from the near center pipe screens to the far center pipe screens or from the far center pipe screens to the near center pipe screens for mixed flowing and mixed heating. The steam temperature of superheater pipe screen outlets separately arranged in the boiler width direction reaches the same parameters, so that the working medium heat deviation caused by different arrangement position temperature fields can be effectively eliminated, the wall temperature of superheated pipe screens in high-temperature areas is lowered, and the high-temperature corrosion in the areas is relieved and improved.

The invention relates to a PPR plastic pipe with a self-repairing function and a preparation method thereof and belongs to the field of PPR pipe preparation. According to the preparation method of thePPR plastic pipe with the self-repairing function, the preparation method of the PPR plastic pipe includes the following steps that a, polyacrylic acid and poly allylamine hydrochloride are mixed uniformly into a mixed solution, the interlayer inner wall of an inner pipe body and an outer pipe body of the PPR plastic pipe are uniformly coated with the mixed solution, film forming is performed through thermal crosslinking, and the coated PPR pipe is obtained; and b, self-repairing micro capsules and light-blocking filler are mixed, an interlayer of the inner pipe body and the outer pipe body of the coated PPR pipe is filled with the mixed self-repairing micro capsules and light-blocking filler, and the PPR plastic pipe with the self-repairing function is prepared. After cracking happens tothe prepared the PPR plastic pipe, cracks can be fast repaired, pipe blasting is prevented, and the service life of the pipe is prolonged.

The invention discloses a sewage treatment device with the filtering function based on the environmental protection and environmental technology. The device comprises a protection box and connecting pipes, and a closing mechanism, a limiting mechanism, an impurity removal mechanism, a transmission mechanism, a force storage mechanism, a one-way mechanism and a driving mechanism are arranged on theprotection box and the connecting pipe; the protection box is of a structure with an opening formed in one side, the connecting pipes are fixedly connected to the two sides of the protection box correspondingly, the positions, away from one side of the protection box, of the connecting pipes are fixedly connected with external connecting pipes correspondingly, and the external connecting pipes are connected with connecting valves through threads correspondingly. A filter screen is fixedly connected to the connecting pipes close to the opening structure of the protection box. With cooperationof the closing mechanism, the limiting mechanism, the impurity removal mechanism, the transmission mechanism, the force storage mechanism, the one-way mechanism and the driving mechanism, sewage in the pipeline can be treated at any time, energy consumption is not needed, the environment is protected, the water flow of the pipeline can be kept, and pipe explosion of the pipeline is avoided.