68results about How to "Widely installed" patented technology

The invention relates to an outer partition wall built by adopting light concrete partition wall boards and a construction method thereof. The outer partition wall is formed by splicing a plurality of abreast light aggregate concrete partition wall boards, and is arranged between two adjacent sideboards of a main body structure, rear groove-type embedded parts are sheathed at the tops and bottomsof splicing seams of the light aggregate concrete partition wall boards, each rear groove-type embedded part is formed by welding an L-shaped steel board and a straight steel board, the horizontal edges of the L-shaped steel board are fixed on the sideboards by virtue of bolts, the vertical edge of the L-shaped steel board are parallel to the outer edges of the sideboards, the light aggregate concrete partition wall boards are shorter than the vertical distance between the two adjacent sideboards, the light aggregate concrete partition wall boards press against the rear groove-type embedded parts at the top, and plugging materials are filled in gaps among the rear groove-type embedded parts at the bottom. The outer partition wall and construction method provided by the invention belong tothe technical field of outer partition walls; the out partition wall provided by the invention has good load-carrying capacity; and the construction method has the advantages of simplicity and convenience in construction, shorter construction period, and the like, and is applicable for construction for the outer partition walls by using the light aggregate concrete partition wall boards.

A method an optical position measuring instrument for detecting a relative position of a scanning unit and a scale. The optical position measuring instrument includes a scale and a scanning unit, wherein the scanning unit and the scale are movable with respect to one another along a curved measurement direction. The scanning unit includes a detector unit, and a reflector unit that has a first wave front corrector, a beam direction inverter and a second wave front corrector. the reflector unit is disposed and / or embodied in the scanning unit so that beams first pass through a first combination of the scale and the first wave front corrector, then via the beam direction inverter, a back-reflection of partial beams is effected in a direction of the scale, and the partial beams then pass through a second combination of the scale and the second wave front corrector before the partial beams then arrive at the detector unit, wherein, via the reflector unit, it is ensured that wave front deformations of the partial beams, which result via a first diffraction at the scale, are converted into wave front deformations that compensate for resultant wave front deformations of the partial beams upon a second diffraction at the scale.

The invention provides a motor energy efficiency monitoring method based on a WSN. The method includes the steps that first, input information parameters of a motor are determined, and corresponding wireless sensors are installed on the motor according to the parameters; second, the wireless sensor network is formed by the wireless sensors and wirelessly connected with an upper computer; third, the motor is started, and data of the wireless sensors are collected; fourth, the input parameters and output parameters of the motor are calculated online; fifth, the energy efficiency condition of the motor is evaluated. Through the method, non-invasive-mode energy efficiency monitoring can be performed on the motor, monitoring data are uploaded to a data processing unit through the WSN, energy efficiency data can be analyzed and evaluated, and the running energy efficiency condition of the motor is analyzed online.

A large spherical screen mounting system comprises a spherical screen and a construction platform arranged on the inner side of the spherical screen. The spherical screen comprises supporting columns arranged on the ground at intervals in an arc shape, a lower chord arc-shaped beam horizontally connected to the top faces of the supporting columns, an equator arc-shaped beam arranged over the lower chord arc-shaped beam, a spherical steel structure net frame connected to the lower chord arc-shaped beam and the equator arc-shaped beam, and a metal screen connected to the inner spherical surface of the spherical steel structure net frame. The metal screen comprises an upper metal screen body arranged on an upper net frame body correspondingly, a middle metal screen body arranged on a middle net frame body correspondingly, and a lower metal screen body arranged on a lower net frame correspondingly. A mounting method of the large spherical screen mounting system can be applied to mounting of a spherical screen steel structure net frame and a metal screen of a large 4D cinema.

The invention relates to a device for installing and detaching support shoes of jacks of shield tunneling machines and a method for installing and detaching the support shoes. The device comprises a support mechanism and a hoisting head, the support mechanism consists of a Y-shaped support framework, small shoe jacking support blocks, a large shoe jacking support block, a support shoe connecting plate and a mounting tube, a rectangular support longitudinal beam and a trapezoidal support crossbeam are abutted to form the Y-shaped support frame, the small shoe jacking support blocks are arranged at two ends of the upper surface of the trapezoidal support crossbeam, the large shoe jacking support block is arranged on the upper surface of the rectangular support longitudinal beam, the supportshoe connecting plate is arranged on the other end surface of the rectangular support longitudinal beam, a connecting hole is disposed on the support shoe connecting plate, the mounting tube is embedded at a joint of the trapezoidal support crossbeam and the rectangular support longitudinal beam, a big-end-up stepped cylindrical hole is arranged in the mounting tube, and the hoisting head is inserted into the stepped cylindrical hole and fixed by a bolt A. The device and the method have the advantages that installation efficiency and detachment efficiency of the support shoes can be greatly improved, safety performance is high, and the device and the method can be widely applied to installation and detachment of the support shoes of the shield tunneling machines.

The invention discloses a multifunctional sterilizing and deodorizing ceramic block. The ceramic block comprises a cellular ceramic matrix, a porous oxide carrier, a catalytic activity component and an assistant component. The cellular ceramic matrix is coated with the porous oxide carrier, and the catalytic activity component and the assistant component are contained in the cellular ceramic matrix. The multifunctional sterilizing and deodorizing ceramic block simultaneously has sterilizing deodorizing and formaldehyde removing functions, and can work in an internal circulation ventilation system without a light source, a heating furnace or other auxiliary devices. The multifunctional sterilizing and deodorizing ceramic block can be widely installed at the screen air outlets of air purifiers, household air conditioners and other electric appliances, can be placed in refrigerators, wardrobes and other household products to reach sterilizing, deodorizing and formaldehyde purposes in air purification, is convenient for people to install and use, and has a simple structure.

The invention is applicable to the field of digital image processing and provides a foggy-weather distance measurement method and a device thereof as well as a distance pre-warning method and a device thereof. The foggy-weather distance measurement method comprises the following steps of: acquiring a foggy-weather image containing a target vehicle by a distance-measuring object; determining the position point z of a target object which is nearest to the distance-measuring object, in the foggy-weather image; obtaining the dark pixel value D(z) of the position point z of the target object; obtaining an overall atmospheric light value A; calculating the transmittance t(z) of the position point z according to the dark pixel value D(z) and the overall atmospheric light value A, wherein t(z)=1-D(z) / A; and calculating the actual distance d(z) between the target object and the distance-measuring object according to the transmittance t(z) of the position point z, wherein the d(z) is equal to a formula shown by a figure. Compared with the prior art, the invention has the advantages that: the implementation methods are simple, only the single foggy-weather image is processed, the image processing algorithm is fast and efficient, and the devices are simple in structure. The invention is applicable to the distance measurement of vehicles and can also be widely applied to various transportation tools.

The invention relates to a roof supporting structure of an FRC (Glass-fiber Reinforced Composite) board and an installation method thereof. A secondary supporting structure is supported on a back keel and comprises transformation short columns, supporting steel columns, supporting steel girders, node boards and round pipe purlines, wherein the transformation short columns are welded on the upper surface of a main steel structure; the top surfaces of the transformation short columns are connected with the bottom surfaces of the supporting steel columns; the top ends of the supporting steel columns are connected to form an integrated beam column structure through the supporting steel girders; the node boards are vertically arranged on the supporting steel girders at intervals; steel sleevesare welded on the node boards; end parts of two connected round pipe purlines penetrate through the steel sleeves; and the round pipe purlines are connected with the back keel through a connecting device. Through arrangement of the secondary supporting structure, the technical problem of noncoplane of the same spatial curve plate is skillfully solved, and the space for the spatial curve plate applied to roofs is enlarged, thus the roof supporting structure can be widely applied to roof supporting construction of the big-span spatial curve plate in a spatial structure.

The invention relates to an open type double-layer curtain wall system and an installation method of the open type double-layer curtain wall system. An inner-layer curtain wall is formed by mutually splicing inner-layer curtain wall modules; in each inner-layer curtain wall module, the edge of the inner-layer curtain wall module is connected with an anchor board, the anchor board is connected with a keel through a T-shaped connection component, the T-shaped connection component is fixedly connected with a first L-shaped connection component, the first L-shaped connection component is connected with a bearing component, the bearing component is in socket connection with an insertion component, the insertion component is connected with a second L-shaped connection component, the second L-shaped connection component is connected with an outer-layer curtain wall, and the outer-layer curtain wall is formed by mutually splicing outer-layer curtain wall modules; an open type double-layer curtain wall is formed in a manner that the inner-layer curtain wall modules and the outer-layer curtain wall modules are mutually in parallel andgaps are reserved between the modules. The open type double-layer curtain wall system has the advantages that the structure is simple, and the installation is convenient; when the energy-saving loss of a double-layer curtain wall is met, the air motion between the inner-layer curtain wall and the outer-layer curtain wall is ensured; furthermore, the inner-layer curtain wall and the outer-layer curtain wall are connected by a connection system, and the connection system utilizes a socket connection manner, so that the connection process is simple and convenient; the open type double-layer curtain wall system can be widely applied to installation of curtain walls.

The invention discloses a driving motor for an automobile cooling fan, comprising a controller assembly, a stator winding and an outer rotor assembly, wherein the controller assembly comprises a heatsink, a rear end cover, a conductive bracket and a PCBA board; three through holes are disposed in the heat sink; three mounting holes are disposed in the conductive bracket; positioning embedding grooves are disposed in the back of the conductive bracket; a conductive link is inserted into each mounting hole; the front end of each conductive link is electrically connected to a corresponding coilof the stator winding; a tail section of each conductive link is bent and then embedded into the corresponding positioning embedding groove; the tail end of each conductive link stretches out of the corresponding positioning embedding groove after being bent; the heat sink and the conductive bracket are provided with positioning support structures for positioning and supporting the PCBA board, andinductors, capacitors, conductive links and wire harness conductive pins are all welded and fixed to corresponding conductive holes in the PCBA board. According to the driving motor for the automobile cooling fan, the stator winding and the PCBA board are better electrically connected, conductive pieces are omitted, the welding operation is simpler, and the conductive efficiency is improved.

The invention provides a wind gathering port deflection wind power generation device. The device comprises a wind gathering device assembly, an internal casing, an external casing, blades, a power generator and a power generator output shaft. The device is characterized in that the internal casing and the external casing are respectively integrally connected with the wind gathering device assembly; the wind gathering device is arranged between the internal casing and the external casing; the wind gathering device is formed by an arc surface at one side, an S-shaped deflection surface at the other side and upper and lower planes; the external side opening of the wind gathering device is the wind gathering port, the internal side opening of the wind gathering device is a wind collecting port, and the wind collecting port is positioned at one side in the internal casing; a plurality of blades are arranged in the center of the internal casing and are in arc shape; the power generator output shaft is integrally connected with the blades; the power generator is arranged right below the geometrical center of the wind gathering device assembly; and the top opening in the internal casing is a wind outlet.

The invention discloses a fire hazard early warning method based on a video image. The method comprises the following steps of step 1, collecting video images to obtain video frames; step 2, selecting 1000 flame samples, 1000 smoke samples and 4000 non-smoke non-fire negative samples in the video frames for generating pre-test values; step 3, generating detection frames by selecting one of the video frames at every 10 frames; step 4, calculating the flame of each pixel point in the detection frames to generate a flame characteristic value; and step 5, calculating the smoke of each pixel point in the detection frames to generate a smoke characteristic value; and step 6, selecting 10 flame characteristic values to calculate 55 flame determination dimensions, and at the same time, selecting 10 smoke characteristic values to calculate 55 smoke determination dimensions and other steps. The method timely monitor the video image and accurately and rapidly determine the fire hazard condition, so as to effectively guarantee the personal and property safety.

The invention discloses a positioning rescue device of an unmanned underwater vehicle. The positioning rescue device mainly comprises a battery, a switch, a protective resistor, an electromagnetic relay, a main control chip, a GPS positioning system, an igniter, a partition plate, an air bag, a shell and a rope. The shell is of a hollow structure and is divided into a non-watertight cavity and a watertight cavity through a partition plate. A rope, an air bag and an igniter are arranged in the non-watertight cavity, and the igniter is arranged on the air bag; the battery, the switch, the protective resistor, the electromagnetic relay and the main control chip are sequentially connected through wires to form a series circuit, and the igniter and the GPS positioning system are connected withthe main control chip through wires. And two normally open contacts of a control loop of the electromagnetic relay are respectively connected with two ends of the main power supply. The invention provides a device with positioning and rescuing functions, so that an aircraft can be quickly positioned and rescued after losing control, and a large amount of searching and rescuing cost is saved.

The invention discloses a positioning explosion dry hanging piece. The positioning explosion dry hanging piece comprises a positioning part, an explosion part and a hexagon nut. The explosion part comprises a straight screw rod, a conical nut and an expansion tube. The positioning part comprises a positioning piece, and one end of the straight screw rod is fixedly connected with the positioning piece. The conical nut and the hexagon nut are in threaded connection with the straight screw rod from left to right, the expansion tube is arranged on the straight screw rod in a sleeved mode, and the expansion tube is placed between the conical nut and the hexagon nut. The inner diameter of the expansion tube is larger than the outer diameter of a small diameter section, and the outer diameter of the expansion tube is smaller than the outer diameter of a large diameter section and the outer diameter of the hexagon nut. The invention further discloses a stone mounting method. According to the method, the positioning part is mounted first, then the explosion part is mounted, and stone is fixedly connected with a wall. The positioning explosion dry hanging piece is simple in structure, convenient to operate, high in efficiency and low in labor intensity when the dry hanging piece is used by a worker for stone mounting. The positioning explosion dry hanging piece and the mounting method thereof can be widely applied to stone curtain wall mounting.

The invention relates to a construction method for a PVC(poly vinyl chloride) drainage direct-buried pipe fitting, which belongs to the technical field of device installation during the building construction. The pipe fitting is installed on a floor template to be integrally cast together with the ground, so that the integrity of a structure floor slab is increased, the procedure of the later construction is reduced and water seepage of the floor slab at the position of the pipe fitting is prevented. Simultaneously, the remaining layers in each measurement section can be accurately and fast located by an infrared vertical meter assisted by auxiliary locating correction of an axis and a control line at this layer by dividing the entire construction process into rational measurement sections, calibrating and locating when a reference layer is installed. The construction procedure is simplified and the construction efficiency is improved while the locating accuracy is not reduced. The construction method, disclosed by the invention, can be widely applied to installation of the drainage pipe fitting in the construction of construction equipment.

An electric built-in lock for rifle trigger consists of a lock seat installed in rear of its receiver, batteries, a controlling circuit, and an electric actuator with a pushing screw rod and a locking hook. The electric lock makes rifle controlled effectively and safely, can be installed invisibly, unlocked quickly, and used for various conditions with good impact-resistance.

The invention relates to an outer partition wall built by adopting light concrete partition wall boards and a construction method thereof. The outer partition wall is formed by splicing a plurality of abreast light aggregate concrete partition wall boards, and is arranged between two adjacent sideboards of a main body structure, rear groove-type embedded parts are sheathed at the tops and bottomsof splicing seams of the light aggregate concrete partition wall boards, each rear groove-type embedded part is formed by welding an L-shaped steel board and a straight steel board, the horizontal edges of the L-shaped steel board are fixed on the sideboards by virtue of bolts, the vertical edge of the L-shaped steel board are parallel to the outer edges of the sideboards, the light aggregate concrete partition wall boards are shorter than the vertical distance between the two adjacent sideboards, the light aggregate concrete partition wall boards press against the rear groove-type embedded parts at the top, and plugging materials are filled in gaps among the rear groove-type embedded parts at the bottom. The outer partition wall and construction method provided by the invention belong tothe technical field of outer partition walls; the out partition wall provided by the invention has good load-carrying capacity; and the construction method has the advantages of simplicity and convenience in construction, shorter construction period, and the like, and is applicable for construction for the outer partition walls by using the light aggregate concrete partition wall boards.

The invention relates to an automatic color plate stacking machine. The stacking machine comprises a square machine frame, a lifting device, a conveying device, a clamping and horizontally-moving device and a swinging and rotating device. The lifting device is arranged on one lateral side of the square machine frame. The conveying device is arranged at the bottom of the square machine frame. The clamping and horizontally-moving device is arranged at the position, above the conveying device, of the lifting device. The swinging and rotating device is arranged outside the clamping and transversely-moving device. The lifting device can drive the clamping and horizontally-moving device to horizontally move up and down. The outer side of the clamping and horizontally-moving device is connected with the swinging and rotating device. The swinging and rotating device can swing and rotate up and down. When the clamping and horizontally-moving device and the swinging and rotating device are both in the horizontal state, the clamping and horizontally-moving device can horizontally move forwards and backwards on the swinging and rotating device. The stacking machine is scientific in design and can automatically complete stacking of a color steel machine. Manpower and material resources are greatly saved. The work efficiency is improved. The economic benefits of enterprises are improved.

The invention relates to a lighting intelligent regulation and control system and method. The system comprises a visibility marker and a camera device thereof, and the following subsystems: visibilitydetection, illumination detection, regulation and control, a communication module, an information release and illumination control driver, and selective traffic flow pedestrian flow detection. The method comprises the following steps: taking a picture of a marker under a standard visibility condition in advance to obtain a series of standard images and establish a visibility image algorithm according to the standard images; When the system runs, images of the markers are taken in real time, visibility values are obtained through the algorithm, and information I is sent to the regulation and control subsystem at regular time; The illumination sensor subsystem collects illumination information in real time, presets an illumination threshold value according to the road condition, and sends information II to the regulation and control subsystem at regular time; The vehicle flow and pedestrian flow sensing subsystem is selectively used for sending out information III; The regulation and control subsystem regulates and controls the illumination power according to the information I to III in a preset judgment mode; and when the fog condition is judged, starting a roadside warning electronic screen to display the speed limit or forbid driving.

The invention discloses an intelligent and simple hydraulic parking device and an electric principle. The intelligent and simple hydraulic parking device comprises an electromagnet mounting plate and a starting switch, wherein an electromagnet is installed on the electromagnet mounting plate; one end of the electromagnet is connected with an electromagnet pull rod; the other end of the electromagnet pull rod is connected with a safe hook; the other end of the safe hook is connected with a hook buckle; the starting switch is connected in series with a key switch SA1; an emergency stop switch SB0 is arranged between the starting switch and the key switch SA1; the key switch SA1 is provided with a lifting gear and a falling gear; the lifting gear of the SA1 is connected in series with a contactor KM1, a hydraulic pump M1 and an upper limit position SQ1; and the falling gear is connected in series with an electromagnetic anti-dropping device YA, a time relay KT1, a relay KA1, a hydraulic cylinder electromagnetic valve YV and a lower limit position SQ2. The intelligent and simple hydraulic parking device provided by the invention has the advantages of being simple and practical, being widely installed in various types of public places, being suitable for integral transportation, being convenient and rapid to install and construct, and avoiding disturbing residents as the hydraulic driving generates low noises.

A support for mounting an automotive radar includes shelf plates, the top surface of the shelf plate is provided with a circular mounting groove, a lower surface of the inner wall of the mounting groove is provided with a first cylindrical groove, the top surface of the inner wall of the first cylindrical groove is communicated with the bottom surface of the inner wall of the mounting groove, themounting groove is provided with a mounting seat with a U-shaped cross section, the outer periphery of the mounting base can be in contact with the outer periphery of the inner wall of the mounting groove, the horizontal position of the top surface of the mounting base is higher than the horizontal position of the top surface of the frame plate, a first gear is arranged in the first cylindrical groove, the bottom surface of the inner wall of the first cylindrical groove is fixedly connected with the bottom end of the fixed shaft, the first gear is fixedly installed on the outer periphery of the fixed shaft through bearings, the bottom end of the mounting seat can be inserted into the first cylindrical groove through the mounting groove, the bottom surface of the mounting seat is fixedly connected with the top surface of the first gear, and the front side of the inner wall of the first cylindrical groove is transversely provided with a second cylindrical groove. The novel radar brackethas the advantages of simple structure, low manufacturing cost, and can reduce the manufacturing cost of a factory, and is suitable for widely used in the installation of automobile radars.

The invention provides a three-dimensional adjustable metal curtain wall connecting system and a constructing method of the three-dimensional adjustable metal curtain wall connecting system. The three-dimensional adjustable metal curtain wall connecting system comprises a base welded with a curtain wall keel, a connecting base, a paw part of metal curtain walls and the metal curtain walls. The paw part comprises a harness cord screw rod connected with the base in a screw mode, a spherical hinge with threads movably connected with the harness cord screw rod, a supporting plate connected with the spherical hinge and wing panels connected with the supporting plate, and the wing panels are movably connected with notches of curtain wall secondary frames fixed on the metal curtain wall. The paw part is simple in structure and convenient to use: Z-direction adjustment can be conducted by the harness cord screw rod connected with the base; X-direction adjustment can be conducted by strip holes in the supporting plate; Y-direction adjustment can be conducted by movably connecting of the wing panels and notches of the metal curtain wall secondary frames; and multi-angle fine adjustment can be conducted by the spherical hinge connected with the harness cord screw rod. With the four structures combined, three-dimensional adjustment of the metal curtain wall can be achieved, and construction process is concise and easy to master. The three-dimensional adjustable metal curtain wall connecting system and the constructing method of the three-dimensional adjustable metal curtain wall connecting system can be widely used for installing the metal curtain walls.

This invention relates to a common control method of electronic switch and non zero line multidigit electronic switch. It uses stand-by power, boot-strap power, driving controller and multidigit power switch to control multichannel loading or circuit. The boot-strap power supplies power to the driving controller, the stand-by power supplies power to the driving controller, the multidigit power switch of the driving controller controls the corresponding loading circuit. The characteristic is: the stand-by power gets the electricity from the stand-by loading loop, the boot-strap power receives the electricity from the boot-strap loading loop. The stand-by power connects the two ends of the multidigit power switch through parallel bridge, the boot-strap power series connects between the common end and the front line of the multidigit power switch. This invention greatly simplifies the circuit. It is reliable and reduces the cost. It avoids the expansion of loading failure problem and solves the problem of stand-by voltage accumulation, eliminates the flickering of fluorescent lamp. It is widely used and easily equipped.

The invention relates to iron-carbon micro-electrolysis sewage and wastewater treatment equipment. The equipment comprises a main cylinder body and an overflow cylinder body, wherein the overflow cylinder body sleeves the outer wall of the top of the main cylinder body; the top of the main cylinder is uncovered; the interior of the main cylinder body is divided into an iron-carbon micro-electrolysis supporting layer, an activated carbon filler layer, a fine sand filler layer, a stone filler layer and an inverted-cone-shaped bottom from top to bottom; the iron-carbon micro-electrolysis supporting layer, the activated carbon filler layer, the fine sand filler layer, the stone filler layer and the bottom are detachably connected; and the top of the main cylinder body is higher than the top ofthe overflow cylinder body. The invention further discloses an application method of the iron-carbon micro-electrolysis sewage and wastewater treatment equipment. According to the invention, the traditional aerobic aeration treatment technology, the grading filtration technology and the emerging iron-carbon micro-electrolysis treatment technology are integrated, and the method has the advantagesof extremely small occupied area, wide application range, no terrain influence, low treatment cost, low operation and maintenance cost and standard effluent quality.

The invention discloses a campus security monitoring system based on a Zigbee network. The campus security monitoring system comprises a security monitoring center, an aggregation node, a passive Zigbee node and an active Zigbee node, wherein the passive Zigbee node and the active Zigbee node are respectively connected with the security monitoring center through the aggregation node; the passive Zigbee node comprises a passive audio Zigbee node and a passive video Zigbee node; the passive audio Zigbee node comprises an audio detector, an awakening control unit, a micro processor, a Zigbee radio frequency module and a battery; the audio detector, the awakening control unit, the micro processor and the Zigbee radio frequency module are sequentially connected with one another; and the battery is connected with the audio detector, the awakening control unit, the micro processor and the Zigbee radio frequency module respectively.

The invention relates to a laser optical electric axis power measuring probe. The probe mainly comprising a measuring probe optical chamber (1), an optical fiber focus lens (9), an optical electric diode (10) and a laser diode (12); the measuring probe optical chamber (1) is provided with a fixing slot which contains and fixes the optical fiber focus lens (9), the optical electric diode (10) and the laser diode (12), wherein the optical fiber focus lens (9) and the laser diode (12) are connected by an optical fiber. The measuring probe provided by the invention has the following advantages that the probe has integrated structure, therefore the mounting space is saved; by adopting the embedded structure, the optical fiber is convenient to mount; through collecting laser by using the optical fiber focus lens, the measuring accuracy is enhanced; and the whole probe has the advantages of being waterproof and dust proof, being free from the affect of working environment and the like.

The invention relates to a pressure regulation and safety device for gas. A bypass gas conveying pipeline is parallelly disposed on a main gas conveying pipeline behind a decarbonization system outlet gate valve. A stop valve is disposed on the bypass gas conveying pipeline. A pneumatic pressure regulating valve is mounted on the main gas conveying pipeline. An emergency cut-off valve is disposed behind the intersection of the bypass gas conveying pipeline and the main gas conveying pipeline. The pneumatic pressure regulating valve and the emergency cut-off valve are connected with a computer distributed control system. The pneumatic pressure regulating valve is a pressure balance type regulating valve, adopts a single seat and sleeve type structure, is matched with a multi-spring pneumatic film executing mechanism, and uses a cage type sleeve valve element. The pressure regulation and safety device is simple in structure, sensitive in response, reliable in action, and the like. By the pneumatic pressure regulating valve and the emergency cut-off valve, stable and safe gas supply of a natural gas pipeline is achieved.

The invention belongs to the technical field of shock absorbing devices of buildings and relates to a horizontal free sliding anti-drawing device. The horizontal free sliding anti-drawing device comprises a first anti-drawing frame, a second anti-drawing frame and an anti-drawing sliding hinge part, wherein the first anti-drawing frame comprises a frame supporting beam, the second anti-drawing frame comprises a frame bearing beam, the frame supporting beam is arranged vertical to the frame bearing beam, the upper part of the anti-drawing sliding hinge part is movably connected to the frame bearing beam, and the lower part of the anti-drawing sliding hinge part is movably connected to the frame supporting beam. The device can be used for preventing the upper and lower structures of buildings from being damaged by horizontal impact of seismic waves, typhoon and the like.

The technical problem to be solved by the invention is how to fully utilize an external heat source to produce hydrogen. The normal-temperature water catalysis hydrogen production method comprises the steps of (1) continuously heating a pyroelectric catalysis piece at the heating temperature not exceeding the boiling temperature of water; (2) in the continuous heating process of the pyroelectric catalysis piece, spraying normal-temperature water to the pyroelectric catalysis piece so as to enable different parts on the pyroelectric catalysis piece to generate temperature difference and thermal fluctuation, and enabling water making contact with the pyroelectric catalysis piece to be dissociated to generate H2; and 3) collecting H2 generated in the step 2). The pyroelectric catalysis piece is a structure made of pyroelectric negative ion particles. According to the hydrogen production method, most of heat sources can be utilized for hydrogen production, and the hydrogen production method is an environment-friendly and low-cost energy scheme. The invention also provides hydrogen production equipment for implementing the hydrogen production method. The hydrogen production equipment has the advantages of simple and reliable structure, low manufacturing cost and hydrogen production cost, easiness in wide installation and use and the like.