Some standard content:
ICS65.060.30
Machinery Industry Standard of the People's Republic of China
JB/T7872-1999
Sprinkling irrigation machinery
Sprinkling irrigation machineryTerminology1999-09-17 Issued
JB/T7872-1999
National Bureau of Machinery Industry
2000-01-01 Implementation
JB/T7872-1999
This standard is a revision of JB/T7872-95 "Terminology of Sprinkling Irrigation Machinery". During the revision, the original standard was edited, and the main technical content was not changed.
This standard replaces JB/T7872-95 from the date of implementation. This standard is proposed and managed by the National Technical Committee for Agricultural Machinery Standardization. The responsible drafting units of this standard are: China Agricultural Mechanization Science Research Institute, Jiangsu University of Science and Technology Irrigation and Drainage Machinery Research Institute. The main drafters of this standard are: Lin Kan, Liu Yanbin. Machinery Industry Standard of the People's Republic of China
1 Scope
Machinery Industry Standard of the People's Republic of China
Sprinkling irrigation machinery
Sprinkling irrigation machineryTaminology This standard specifies the terms and definitions of sprinkler irrigation machinery. JB/T7872-1999
Replaces JB/T7872-95
This standard applies to the design, manufacture and testing of sprinkler irrigation machinery (including sprinkler irrigation machine, sprinkler irrigation pump, sprinkler irrigation pipeline, sprinkler nozzle and other equipment). 2 Sprinkler irrigation machine (sprinkling machine) is a sprinkler irrigation machine that combines power machine, pump, pipeline, sprinkler nozzle, mobile device, etc. in a certain way and has an integrated structure. 2.1
Multi-support sprinkler multi-support sprinkler machine A sprinkler with a sprinkler branch fixed on a roller or tower vehicle, including center pivot, translation and roll-type sprinklers. Center pivot sprinkler (circular sprinkler) centerpivot sprinkler machine A sprinkler with a sprinkler branch fixed on several tower vehicles and rotating around the center pivot. Translational sprinkler translationlinemovesprinklingmadhine A sprinkler with a sprinkler branch supported on several tower vehicles and moving and spraying along the vertical direction. Roll-type sprinkler rollwheellinemovesprinklingmachine A sprinkler with a branch fixed on several rollers as the axle and rolling along the vertical direction. Winch sprinkler travellersprinklingirrigationmachine A sprinkler that uses a special hose or steel cable wound on a winch to pull the sprinkler vehicle to move. Double boom sprinkler double boom sprinkler A sprinkler with cantilever trusses extending from both sides of the walking machine, with a sprinkler branch pipe as its chord. Tractor-mounted sprinkler tractor-mounted sprinkler The water pump is installed on the tractor hydraulic suspension mechanism and driven by the tractor power output shaft. Trolley sprinkler trolley sprinkler A sprinkler with a power machine and water pump installed on a trolley. Hand-lift sprinkler strdtchersprinHing madhine A sprinkler with a power machine and water pump installed on a manually lifted frame. Center pivot
centerpivot
The water inlet part of the branch pipe of the center pivot sprinkler, which is also the supporting component and rotating axis of the branch pipe. 2. 11
centersupport
Center support
The component that supports the center pivot.
Collector ring
In electric center pivot sprinkler, a wiring device to prevent cable entanglement. Approved by the State Bureau of Machinery Industry on September 17, 1999 and implemented on January 1, 2000
Percent timer
percent timer
JB/T78721999
A relay to control the start/stop time ratio and operation cycle of center pivot sprinkler. Span tower car
A car equipped with a drive device and supporting the branch pipe with a tower. 2.15
Synchronous control system
Synchronous control system
A control system that adjusts the travel speed of the tower car to keep the branch pipe basically straight. 2.16
Corner system
comersystam
An additional system for center pivot sprinklers to spray non-circular field corners. 2.17
Line move guidance device line move guidance device A device that keeps the driving vehicle moving along the vertical branch pipe and parallel to the straight pipe. 2.18
Excess water stopping device
Excess water preventing device
An automatic stopping device to prevent the sprinkler from spraying too much water due to certain factors. 2.19
Driving trolley driving camiage
The central or head end tower vehicle equipped with power, control, water intake and other equipment in a horizontally movable sprinkler. Winch truck winch truck
In a winch sprinkler, a vehicle equipped with a winch and its driving device and special hoses and other equipment. Sprinkler car sprinHerwagon
In a winch sprinkler, a water-spraying device that is pulled and moved by a winch. Sprinkling width
The effective spraying width perpendicular to the forward direction of the sprinkler. Sprinkling pump
sprinkling irigation pump
Water pumps used for spraying irrigation, commonly used are centrifugal pumps, self-priming pumps, micro pumps, multi-stage pumps, long-axis well pumps, submersible electric pumps, etc. 3.1
Self-priming pump self-priming pump
The abbreviation of self-priming centrifugal pump, whose water inlet pipe is not provided with a bottom reading, and the pump body structure is changed so that it can store a part of water after stopping. When starting, the air inlet pipe and the pump are gradually discharged through the mixing and separation of air and water, and the degassed water returns to the appropriate position in the pump through the reflux channel and repeats the above process, so as to achieve the purpose of self-priming and filling the centrifugal pump. Internal mixing white suction pump self-priming pump within inner reciraulation air and water are mixed at the impeller inlet or inside the self-priming pump. Internal reflux internal mixing self-priming pump || tt || sdf reflux reflux channel is entirely inside the pump body of the internal mixing self-priming pump. External reflux internal mixing self-priming pump sdf-priming pump within inner recirculation and outside reflux reflux channel extends to the outside of the pump body of the internal mixing self-priming pump. External mixing self-priming pump self-priming pump without outer recirculation air and water are mixed outside the impeller of the self-priming pump. Axial reflux external mixing self-priming pump || tt || sdf reflux reflux direction parallel to the pump axis of the external mixing self-priming pump. 3.7
JB/T7872-1999
Radial-reflux external-mixing self-priming pump sdf-priming pump without recirculation and radial-reflux external-mixing self-priming pump with the reflux direction perpendicular to the pump shaft. Sprinkling irrigation booster pump sprinkling irrigation booster pump a pump that increases the pressure energy of water during sprinkling irrigation.
Air-water separation chamber air-water separation chamber is set above the water outlet side of the self-priming pump body to promote air separation. Shaft sealing mechanism shaft sealing mechanism
A sealing device set at the place where the pump shaft extends out of the pump body to prevent air from entering the pump and reduce the pressure water from flowing out of the pump. Common shaft sealing mechanisms for sprinkler pumps include packing seals, mechanical seals and skeleton rubber seals. 3.11Padding seal
Padding seal
A shaft sealing mechanism composed of packing, packing gland, water seal pipe, water seal ring and retaining sleeve. 3.12
Mechanical seal
Mechanical seal
A shaft sealing mechanism composed of dynamic and static sealing rings, seats and springs or other loading components fitted on the pump shaft. Single-end mechanical seals are commonly used in sprinkler pumps.
Skeleton rubber seal rubber seal with spring rimA shaft sealing mechanism composed of several rubber sealing rings with embedded spring skeletons fitted on the pump shaft, also known as skeleton oil seal. Self-priming device of centrifugal pump3.14
When the centrifugal pump is not equipped with a bottom valve, a self-priming water filling device is attached to the pump body. Commonly used ones include external reflux self-priming devices, exhaust starters and manual pumps.
Self-priming system without reflux3.15
Self-priming water filling device for centrifugal pump composed of gas-water separator, reflux pipeline, valve and nozzle. Exhaust starter ehaust-gasprimer
A device that uses the exhaust gas of internal combustion engine to realize self-priming water filling of centrifugal pump, also known as internal combustion engine exhaust self-priming device. 3.17 Hand pump handpump
The abbreviation of manual positive displacement pump, used for water lifting, pressure increase or as a water filling self-priming device for centrifugal pump, self-priming performance self-priming character 3.18
The ability of the pump to automatically absorb water during the starting process, expressed by the maximum self-priming height of the pump (m) and the time required from starting to normal water discharge at the specified self-priming height (s).
sdf-primingdharacteristictest3.19
Self-priming performance test
Under specified conditions, a test is conducted to determine the maximum self-priming height of the pump and the relationship between the self-priming height and its corresponding normal water discharge time. 4 Pipeline of sprinkling irrigation Pipeline used to transport water for spraying.
Pipeline
Equipment composed of pipes and pipe fittings.
Pipe for sprinkling irrigation Pipe with a circular cross-section used for transporting water for spraying, etc., commonly used are metal pipes, plastic pipes, cement product pipes, etc. There are 6 pages left to read, do you want to continue reading?
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Thin-wall metal pipe
Thin-wall metal pipe
JB/T78721999
The collective name of galvanized thin-wall pipe and aluminum (aluminum alloy) pipe. Thinwall galvanized steel pipe
A pipe made of thin steel plate and galvanized. The ratio of the diameter to the thickness of the galvanized thin-wall steel pipe used in sprinkler irrigation is 50:1~100:1. Thin-wall aluminum (aluminum alloy) pipe thin-wallaluminium (aluminum-alloy) pipe
A thin-wall pipe made of aluminum (aluminum alloy). The ratio of the diameter to the thickness of the thin-wall aluminum (aluminum alloy) pipe commonly used in sprinkler irrigation is 40:1~60:1.
Plastic pipeplasticspipe
A hollow cylindrical product of a certain length made of plastic. Used in sprinkler irrigation are hard polyvinyl chloride pipe, soft polyvinyl chloride pipe, polypropylene pipe, low-density polyethylene pipe, high-density polyethylene pipe, plastic-coated hose, etc. Hard polyvinyl chloride pipe
Fhard polyvinyl chloridepipeA pipe obtained by extruding polyvinyl chloride resin with stabilizers, lubricants, etc. Soft polyvinyl chloride pipe
softpolyvinyl dhloridepipe
A pipe obtained by extruding polyvinyl chloride resin with plasticizers, stabilizers and other auxiliary agents. Copolymer polypropylene pipe
polypropylenepipe
A pipe obtained by extruding copolymer polypropylene resin. Low-density polyethylene pipelowdensitypolyethylenepipe4.10
A pipe obtained by extruding low-density polyethylene resin (some also need to add additives). 4. 11
High-density polyethylene pipeHigh-density polyethylene pipe is a pipe made of high-density polyethylene resin (some also need to add additives) through extrusion molding. Plastic-coated hose
Plastic-coated hose
A hose made of high-strength synthetic fiber and extruded with synthetic resin inside and outside. 4.13
Pipefitting
A general term for parts and components in pipelines that play the role of connection, control, change of direction, diversion, sealing, support, etc. 4.14
Coupler
Parts and components that play the role of connection in pipelines.
Quick connector
quickupler
A connector that can be quickly disassembled and assembled.
Plug-type quick connectorPlug-type quick couplerA quick connector with self-draining ability, consisting of a socket, a spigot, a sealing ring, etc. Spherical quick coupler 4.17
A quick coupler with a certain deflection angle, consisting of a ball bowl, a ball head and a sealing ring. 4.18
A jawtype quick coupler with a self-draining function, consisting of a male connector with a toothed buckle, a female connector with a notch and a groove and a sealing ring. Three-way valve
Three-way valve
A valve for controlling water supply and diversion in a pipeline. 4.20
Riser outlet valve
Sprayer standpipe valve
A valve for quickly connecting the standpipe to supply water to the sprinkler. Drain valve
Drain valve in a pipeline.
JB/T78721999
Quick air valve
Jquid-adingairvalve
A valve that automatically and quickly discharges and inlets air when water is supplied or stopped in the pipeline. Risersupport
A device that supports the riser to keep it vertical and stable. 4.24
Pipelinesupport
A device that supports the mobile pipeline to lift it off the ground. workingpressure of pipeline
Pipeline working pressure
The internal water pressure allowed to be reached when the pipeline is working, in Pa (1 bar = 105 Pa). Test pressure of pipeline
test pressure of pipeline
The specified pressure that the pipeline should withstand during the water pressure test, in Pa galvanized layer combining capacity 4.27
The adhesion ability of the galvanized layer on the surface of the pipe and pipe fittings. 4.28
Galvanized layer thickness
Galvanizd layer thickness
The thickness of the zinc layer plated on the surface of the pipe, in m, or expressed as the weight of zinc layer per square meter (gm2). Self-discharge sdf-dischargarate
The amount of water that self-discharges from the joint under specified conditions during the self-discharge test, in L/min. Head loss in hundred-meter pipeline Under specified conditions, the sum of the head loss along the way and the local head loss of water passing through a hundred-meter pipeline, in meters of water column. Pipeline hydraulic performance test A general term for tests such as water pressure resistance, sealing, self-discharge, deflection angle, head loss per hundred meters, local loss, porosity, and flattening of pipelines.
Flattening test
Flattaning test
A test to flatten a circular cross-section pipe to a specified value to assess whether the weld is qualified. 4.33
Expanding test
Expanding test
A test to enlarge the pipe mouth and check whether the weld is qualified. 4.34
Pipeline water pressure test pipelinepressuretest A test to check whether the pipeline can withstand the internal water pressure under specified conditions. Pipeline sealing test pipelinewater-thghttest A test to check the sealing performance of the pipeline connection under specified conditions. Self-discharge test
Selfdischargerate test
A test to measure the self-discharge of the pipeline.
Deflection angle test
Deflection angle test
A test to check the sealing performance of the pipeline joint and whether it can withstand water pressure under specified test pressure and deflection angle conditions. Pipeline operation test
Pipeline performance test
JB/T78721999
A test to check whether the various components of the pipeline can work normally under specified conditions. 5 Sprinkler (Sprinkler)
Sprinkler
Equipment for spraying irrigation by spraying pressurized water into the air to form water droplets. 5.1
Rotating sprinkler rotating sprinkler
A sprinkler that rotates around its own plumb line.
Rocking arm sprinkler impad drive sprinkler A rotating sprinkler that obtains its driving torque by the impact of the rocker arm. Complete fluid sprinkler complete fluid sprinkler A rotating sprinkler that obtains its driving torque by the reaction force of the water flow and changes the direction of the jet by using the wall attachment effect of the water flow, also known as a flow control sprinkler.
Impeller sprinkler
Impeller sprinkler
A rotating sprinkler that obtains its driving torque by using the water flow to impact the impeller, also known as a worm gear sprinkler. Vertical rocker sprinkler vertical impact drive sprinkler A rotating sprinkler that obtains its driving torque by using the water flow passing through the deflector of the vertical rocker arm to generate a reaction force. Fixed sprinkler fixed sprinkler
A sprinkler whose parts do not move relative to each other during spraying. Refraction nozzle rflectionnozke
A fixed nozzle that sprays water through a bend and breaks into water droplets. Slot nozzle slotnozle
A fixed nozzle that sprays water through a gap and breaks into water droplets. Diffuse nozzle
diffusion nozzle
A fixed nozzle that sprays water and breaks into water droplets. 5.10
Nozzle diameter
noze diameter
The diameter of the section of the nozzle flow channel with equal cross-section, in mm. Equivalent nozzle diameter
equivalent nozzlediamdter
The nozzle diameter of a non-circular nozzle converted according to its flow rate. Elevation angle of nozzle
elevation angle of nozzle
The angle between the jet axis and the horizontal plane at the nozzle outlet, in ("). 5.13
Normal elevation angle of nozzle
Normal elevation angle of nozzle A nozzle elevation angle greater than or equal to 20°.
Low devation angle of nozzle
Low devation angle of nozzle
A nozzle elevation angle less than 20°.
Spriner working pressure
sprinerworkingpressure
When the nozzle is working, the static water pressure measured 20 cm away from the nozzle water inlet, in Pa. 5.16
Spriner nominal working pressure
sprinklernominal workingpressureThe working pressure specified in the design of the sprinkler. For a rotating sprinkler, it refers to the effective working pressure range. 6
Minimum effective pressure of rotating sprinkler
JB/T78721999
minimum effective pressure of rotating sprinklerThe minimum value of the rated working pressure of a rotating sprinkler. maximumeffectivepressureofrotatingsprinkler5.18
Maximum effective working pressure of rotating sprinkler
The maximum value of the rated working pressure of a rotating sprinkler. 5.19
Minimum working pressure of rotating sprinkler
JminimumworkingpressureofrotatingsprinklarThe minimum working pressure for normal rotation of the sprinkler, its value should be equal to or less than 0.9 times the minimum effective working pressure. Maximum working pressure of rotating sprinkler
maximum working pressure of rotating sprinkler5.20
The maximum working pressure of the normal rotation of the sprinkler shall be equal to or greater than 1.1 times the maximum effective working pressure. 5.21
Sprinkler flow
sprinkler discharge rate
The volume of water sprayed by the sprinkler per unit time, in m/h or L/min. sprinklerrange
Sprinkler range
The radius of the wetting circle of the sprinkler, in m. 5.23
Spray height
trajectory height
The maximum height of the sprayed water relative to the nozzle under the rated working pressure, in m. 5.24
sprinlderrotafioncycle
Sprinkler rotation cycle
The time for the sprinkler to rotate one circle, in min/r. 5.25
Sprinkler intensity
applicationintsity
The volume of water sprayed on a unit area per unit time, or the depth of water sprayed per unit time, in mm/h. 5.26 Water distribution characteristics
rainfall distribution charadteristicsThe relationship between the sprinkler intensity at each point and the position of the corresponding point within the spray range is usually represented by a water distribution curve or a water distribution contour map.
Sprinkler uniformity
rainfall distribution uniformityThe uniformity of water distribution within the spray range is represented by the Christiansen uniformity coefficient. sprinkler rotating spindle
Sprinkler rotating shaft
The rotating shaft of the rotating sprinkler is also the water inlet section of the flow channel. 5.29
Sprinkler body bushing
A part installed outside the rotating shaft of the sprinkler body, acting as a bearing or bearing seat, and some are also used as a connector between the sprinkler head and the vertical pipe. Sprinklerbody
The main body of the sprinkler head, which is part of the flow channel. Sprinkler jet
A part that connects the sprinkler body and the nozzle and acts as a flow stabilizer. Flow straightener
A part that reduces the influence of vortex in the sprinkler flow channel. 5.33
A part at the end of the sprinkler flow channel that converts energy to spray water. 5.34
impactarm
In a rocker-arm sprinkler, a part that receives the energy of the water flow and impacts the sprinkler head to rotate. 5.35
Reversing mechanism
reversingmechanism
Mechanism for changing the direction of rotation of the sprinkler.
reflectioncone
conical part for reflecting water flow.
JB/T78721999
SprinklerhydrostaticpressuretighttestA test to assess whether the flow-through components can withstand the internal water pressure under specified conditions. SprinklersealingtestSprinklerwater-tighttestA test to assess the sealing performance of the sprinkler bearing and the connecting nozzle under specified conditions.Sprinkleroperationtest
sprineroperationtest
A test to assess the reliability and uniformity of sprinkler rotation under specified conditions. Sprinklerhydraulicperformancetest
sprinklerhydraulicperfomancetestA test to measure the performance of the sprinkler flow, range, water distribution characteristics, etc. Sprinkler durability test
sprinder durability test
A test to assess the operating reliability and life of sprinklers and their components under specified conditions, sprinkler routine test
Before the sprinklers leave the factory, the manufacturer shall measure the flow rate and range of the sprinklers in accordance with regulations. The People's Republic of China
Mechanical Industry Standard
Sprinkler Machinery Terminology
JB/T78721999
Published and issued by the Mechanical Science Research Institute
Printed by the Mechanical Science Research Institute
(No. 2, Shouti South Road, Beijing
Postal Code 100044 )
Printing sheet 3/4 Word count 18000
Format 880X1230
First edition in December 1999
First printing in December 1999
Print run 1-500www.bzxz.net
Price 10.00 yuan
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