This standard specifies the special terms for turbines, storage pumps and pump turbines. This standard is applicable to the formulation of standards, the compilation and translation of manuals, teaching materials, books and periodicals, and the design of drawings. GB/T 2900.45-1996 Electrical terminology turbines, storage pumps and pump turbines GB/T2900.45-1996 Standard download decompression password: www.bzxz.net

National Standard of the People's Republic of China
Electrical terminology
Hydraulic turbine, storage pump and pump-turbine
Electrotechnical terminologyHydraulic turblne, storage pump and pump-turbineGB/T 2900.45—1996
Generated GB 290G.45—83
This standard refers to and adopts international standards IEC4(Secret)101A "Guide to terminology for hydraulic turbines, storage pumps and pump-turbines" (1993 edition), IEC41% "Site acceptance tests for determining the hydraulic performance of turbines, storage pumps and pump-turbines" (199" edition), IEC193 "International Code for Acceptance Tests of Hydraulic Turbine Models 3 (1965 edition), and IEC609 "Cavitation Assessment of Hydraulic Turbines, Storage Pumps and Pump-Turbines" (1978 edition).
1 Subject content and scope of application
This standard specifies the special terms for hydraulic turbines, storage pumps and pump turbines (hereinafter collectively referred to as hydraulic machinery, referred to as hydraulic machinery). This standard is applicable to the formulation of standards, the compilation and translation of manuals, teaching materials, books and periodicals, and the design of drawings, etc. 2 General terms
2.1 Hydraulic machineryHydraulic machineryMachinery that realizes the mutual conversion between water flow mechanical energy and body mechanical energy. 2.2 Hydraulic turbineHydraulic turbine that converts water flow energy into rotational mechanical energy. 2.3 Storage pump
A pump that lifts water from downstream to upstream in a pumped storage power station. 2.4 Pump turbine, reversible lurbine.Pump turbineHydraulic machinery that can operate as both a turbine and a pump, also known as a reversible turbine. 2.5 Direction of rotationDirection of rotation of the impeller as seen from the generator shaft end. The cross-flow turbine slides from upstream to downstream. The rotation direction of the pump turbine is the same as the rotation direction of the turbine in operation. 2.6 Unit
A combination of hydraulic machinery and motors used for power generation or pumped storage. 2.7 Inlet measuring section of turbine The section for measuring the water flow energy at the inlet of the turbine (Section 1 of Figure 1A, 1B, 1C.1). 2.8 Outlet measuring section of turbine The section for measuring the water flow energy at the outlet of the turbine (Section 2 of Figure 1A, 1B, 1C, Section 2, Section 3 of Figure 1D). 2.9 Inlet measuring section of storage pump The agreed section close to the suction pipe or the inlet of the pump casing (Section 2 of Figure IE, IF). 2.10 Outlet measuring section of storage pump For open drainage channel, it is the agreed section near the outlet of storage pump (Figure 1G, 1 section), and for closed pipe, it is the agreed section near the pressure chamber of storage pump upstream of drainage valve (Figure 1E, 1F, 1 section) for drainage National Technical Supervision Bureau approved on May 20, 1996 and implemented on January 1, 1997. High pressure measuring section 2.11 Turbine inlet measuring section and storage pump outlet measuring section (Figure 2). 2.12 Low pressure measuring section Turbine outlet measuring section and storage pump inlet measuring section (Figure 2). 2.13 Vertical, horizontal and inclined unit Units with vertical, horizontal and inclined main shafts. 2.14 Regulated hydraulic machinery Hydraulic machinery that uses guide vanes, impellers [two blades of the impeller or nozzles to adjust the flow 2.15 Non-regulated hydraulic machinery Hydraulic machinery that cannot adjust the flow 2.16 Main valve
mainvalve
A valve installed between the pressure pipe and the volute (pressure chamber) that can cut off the water flow 3 Types
3.1 Turbine
3.1.1 Reaction turbine reactionturbine turbine A turbine that uses the pressure energy and kinetic energy of the water flow to do work. 3.1.2 Francis turbine, mixed-flow turbine A reaction turbine with radial flow of axial water flowing into the runner and axial flow out of the runner, also known as Francis turbine 3.1.3 Axial flow turbine A reaction turbine with axial flow of axial water flowing into and out of the runner 3-1.4 Kaplan turbine, axial-flow adjustable blade propeller 1urbine An axial-flow turbine with adjustable runner blades and guide vanes, also known as Kaplan turbine. 3.1.5 Thuma turbine An axial-flow turbine with adjustable runner blades only, also known as Thuma turbine. 3.1.6 Axial flow fixed blade turbine propeller turbine Axial flow turbine with non-adjustable (or adjustable when stopped) runner blades. 3.1.7
tubular turbine, through flow turbine Axial flow turbine with a straight (or S-shaped) flow passage. 3.1.8 Bulb turbine Bulb turbine A through flow turbine with a generator placed in a bulb in the flow passage (Figure 3). 3.1.9 Pit turbine A through flow turbine with a generator placed in a flow passage shaft. Full-flow turbine st.raight flow turbine, rim-generator unit3. 1. 10
A tubular turbine with the generator rotor attached to the outer edge of the runner blades (Fig. 4), tubular turbine (S-type turbine)3. 1. 11
A tubular turbine with an S-shaped flow channel and a main shaft extending from the flow channel and connected to the generator (Fig. 5). 3. 1. 12
Diagonal turbine diagonal turbine
A reaction turbine with the axial water flow entering and exiting the runner in the direction of the inclined main shaft. Deriaz turbine3. 1.13
A diagonal turbine with the runner blades adjustable in conjunction with the guide vanes. Fixed blade of Dcriaz turbine3. 1. 14
GB/T 2900. 45--1996
Diagonal flow turbine with fixed blade of Dcriaz turbine3. 1. 14
GB/T 2900. 45--1996
Diagonal flow turbine with fixed blade of Dcriaz turbine (or adjustable when stopped). 3.1.15 Impulse turbine, action turbine A turbine whose runner only uses the kinetic energy of water to do work. 3.1. 16 Pelton turbine Scoop turbine An impulse turbine with bucket-shaped runner blades and the centerline of the monthly jet tangent to the runner pitch circle (Figure 6). Also known as Belton turbine, or tangent turbine:
3.1.17 Inclined jet turbine An impulse turbine with bowl-shaped runner blades and the centerline of the monthly jet at an oblique angle to the runner rotation plane (Figure 7). 3.1.18 Impulse turbine The impeller blades are arranged in a cylindrical shape, and the water flows through the impeller and acts on the impeller blades (Figure 8). 3.2 Energy pump
3.2.1 Mixed flow (centrifugal) storage pump Centrifugal storage purup, rnrxed-flew starage pump A pump in which the axial flow enters the impeller axially and flows out of the impeller axially (Figure 9). 3.2.2 Axial flow impeller pump prapeller storagc punp.axial storage pump A pump in which the axial flow enters and exits the impeller axially (Figure 10). 3.2.3 Diagonal flow pump A pump in which the axial flow enters and exits the impeller in a direction inclined to the main axis (Figure 11). 3.2.4 Multi-stage storage pump A pump in which the water flows sequentially through multiple impellers mounted on a single shaft. 3.3 Pump-turbine (also called reversible turbine) 3.3.1 Single stage pump-turbine A pump-turbine in which the water flows through only one impeller. 3.3.2 Multi-stage pump-turbine A pump-turbine in which the water flows through multiple impellers mounted on one shaft in sequence. 3.4 Valves and valves
3.4.1 Butterfly valve Butterfly valve vc
The valve is a main valve in the shape of a convex lens or a fan (Figure 12A). Biplane butterfly valve, through flow burterfly valve 3.4.21
The valve consists of a biplane pole and a partition. When it is opened, the main flow of water can pass through the flat plate (Figure 12B). 3.4.3 Cylinder valve cylindrical Valve + ringgate The valve is cylindrical and located between the fixed guide vane and the movable guide vane of the turbine. It is the main valve that moves up and down along the axis of the turbine (Figure 12C). 3.4.4 Rotary valve, spherical valve The valve body is spherical: when fully open, the valve and the pressure steel pipe form a half valve with a straight flow channel (Figure 12D). 3. 4. 5 Mushroon valve, hollow-cune valve. Howell-Bunger valve The valve is in the shape of a hollow disk and is generally used as a valve for draining water (Figure 12E). 3.4.6 Needle valve
The valve is a conical water inlet valve or unloading valve (Figure 12F). By-pass valve
Before opening the main valve, it is used to balance the water before and after the main valve: 3.4.8 Vacuum break valve When the guide valve is closed urgently, it can automatically open the valve to replenish air in order to reduce the vacuum caused by water hammer. 4 Structural components
4.1 Francis turbine
GB/T 2900.45--1996
4.1.1 Embedded components Embedded in concrete and cannot be removed. 4. 1. 2 Turbine
The flow-through component that introduces water into the guide mechanism, also known as the suction pipe. 4.1.3 Spiral case
An ant-shaped pressurized water guide chamber.
4.1.4Stand Ting
The basic component consisting of upper and lower rings and fixed guide vanes. It is used to transmit water thrust and the weight of the upper concrete and unit of the volute. 4.1.5Stand vane
The support connecting the upper and lower rings of the stand ring, guiding the water flow of the volute to flow evenly to the guide vanes. Spiral cage nose
The fixed guide vanes with special shapes located at the end of the volute. 4.1.7Foundation ring, discharge ring connects the bottom ring and the draft tube cone, and is used to hold the basic components of the runner during installation and overhaul. 4.1.8Draft tube
The outlet pipe section located behind the runner, so as to utilize the potential energy and part of the kinetic energy of the water flow at the runner outlet, also known as the suction pipe. 4.1.9 Conical draft tube A straight tapered tailwater pipe.
4.1.10 Elbrow draft tube A water pipe with an elbow-shaped flow channel and consisting of a cone tube, a draft tube and a diffuser. 4.1.11 Draft tube cone A straight tapered pipe section connecting the draft tube cone and the foundation ring.
Draft tube elbow
Elbow-shaped elbow between the draft tube and the diffuser. 4.1.13 Draft tube outlet A diffuser-shaped flow channel behind the draft tube.
4.1.14 Draft tube pier A streamlined load-bearing support in the diffuser section.
4.1.15 Draft tube liner A steel plate facing on the concrete surface of the draft tube. 4.1.16 Pit liner The protective surface of the concrete surface of the turbine pit. 4.1.17 Distributor The mechanism for guiding water flow and regulating the amount of water entering the runner (including top cover, bottom ring, guide vane and its operating mechanism, etc.). 4.1.18 Head cuver: The ring-shaped part that supports the upper shaft neck and related parts of the guide vane and constitutes the flow surface. 4.1, 19 Bottu ring, botton cover The ring-shaped part that supports the lower auxiliary neck of the guide vane and constitutes the flow surface. 4.1.20 Guile vane, wicket gate The streamlined part that guides water flow and regulates the flow of the turbine (chisel pump). GB/T2900.45—1996
4.1.21 Gulating ring: The ring-shaped part that transmits the operating force of the relay to the connecting rod to make all the guide vanes move synchronously. 4.1.22 Guide vane levcr, wicket gate lever Parts installed on the shaft end of the guide vane to rotate the guide vane. 4.1.23 Splikey
A half-key pin that connects the guide vane and the guide vane arm and transmits torque. 4.1.24 Guide vane link, wicket gate link Transmission rod that connects the control ring and the guide vane arm. 4.1.25 Guide vane overload protection device Guilevane overlond protection device Protection device when the guide vane movement is blocked.
4.1.26 Shear pin
Parts that are sheared off when the guide vane movement is blocked and can be replaced. 4.1.27 Friction device [rictjondevice When the shear pin is sheared off, the device that prevents the adjacent guide vanes and connecting rods from colliding through appropriate friction. 4.1.28 Guide vane hearing Sliding bearing supporting the guide vane.
4.1.29 Guide vane thrust bearing The bearing that bears the weight of the guide vane and the axial water pressure. 4.1.30 Guide vane stem seal The seal that prevents water leakage from the guide vane bearing gap. 4.1.31 Guide vane end seal When the guide vane is fully closed: The seal that prevents water leakage between the end face of the guide vane body and the top cover and bottom ring: 4. 1. 32
Guide vane face seal
When the guide vane is fully closed, the seal that prevents condensation at the overlapping part of the adjacent guide vane heads. 4.1.33 Facing plateswear plates The anti-wear face plates on the top cover and bottom ring flow surface. 4.1. 34 Guide vane stop block The part that limits the rotation range of the guide vane when the guide vane is out of control. 4. 1. 35 Guide vane servotiotor The hydraulic device that supplies the guide vane operating force.
4. 1.36 Individual guide vane servomotor Individual hydraulic device that supplies operating force to individual guide vanes. 4. 1. 37 Push and pull rod, connecting rud Transmission rod that connects the guide vane servomotor and the control ring. 4.1.38 Regulating shaft Rotating shaft that transmits operating force between the guide vane servomotor and the control ring. 4.1.39 Balance pipe
A connecting pipe that connects the cavity between the runner crown and the top cover with the tailwater pipe to reduce water thrust. 4. 1.40 Rotating parts Parts that rotate during operation and their bearings and seals. 4.1.41 Runner The part of a turbine that converts water flow energy into rotational mechanical energy (called an impeller for water pumps) 4.1.42 Blade The main component of a runner that realizes heat transfer, and its flow surface is in the shape of an intermediate curved surface (called an impeller for water pumps). 4.1.43 Upper part The component that fixes the L end of the Francis turbine blade and connects to the main shaft. 4.1.44 Lower ring hand
Component for fixing the lower end of the Francis turbine blades. 4. 1.45 Runner cone
A conical component connected to the upper crown of the Francis turbine or the lower end of the axial flow turbine body to guide the water flow of the turbine. 4.1.46 Runner sealing device runncr sal Non-contact seal between the runner and the corresponding fixed parts to reduce the runner. Runner wearing ring 4.1+47
Component for reducing the runner sealing age on the upper crown and lower ring of the runner. 4.1.48 Circumferential stopper ring Fixed sealing component corresponding to the runner stopper: 4.1.49 Runner compression plate DC compression plate The ring plate between the runner upper crown and the material cover to reduce the water thrust. 4.1.50 Main shaft
A shaft connected to the runner and transmitting torque.
4.1.51 Guide bearing
A bearing that keeps the main shaft centered and bears radial force. 4.1.52 Guide hearing cnllarA cylindrical component fixed to the auxiliary and rotating in the guide bearing. 4.1.53 Guide bearing shoeA guide bearing component made of friction-resistant material: 4.1.54 Guide bearing housingA guide bearing component supporting the shaft.
4.1.55 Main shaft sealA device used to reduce the amount of water between the shaft and the fixed parts. 4.1.56 Inspection sealAtandstll sealAn expandable seal that prevents water from flowing between the main shaft and the fixed parts when repairing the main shaft seal. 4.1.57 Coupling bolt
Bolts that connect the main shaft of the turbine with the runner and the shaft of the generating plate. 4.2 Axial flow turbine and diagonal flow turbine 4.2.1 Runner chamber rurler c:hamber
The outer shell of the weak flow and diagonal flow runner blades is connected to the bottom ring and the water tank. 4.2.2 Inner top cover (support cover) inncr hcad cowver, inner top covet is the product of the runner. The inner cover of the vertical axial flow turbine can be divided into inner and outer parts, of which the inner ring is called the inner top cover. 4.2.3 Runner body ninnerhuh
The center of the runner that supports the blades and is connected to the main shaft rotates. 4.2.4 Blade turning mechanism of runnerhladc. The connecting rod machine that is installed in the inner cavity of the runner body and operates the rotation of the blades will (including the runner body, blades and their operating mechanism, etc.). 4.2.5 Blade pivot runner blade truriion is connected to the blade and transmits the rotation torque of the blade turning mechanism to the short shaft of the blade. 4.2.6 Rocker arm
GB/T 2900.451996
Component mounted on the blade pivot to facilitate blade rotation 4.2.7 Linkage
Link connecting arm and operating frame,
4.2.8 Operating frame
Component that transmits the servomotor operating force to the blade linkage. 4.2.9 Runner blade servomotor A component that supplies the runner blade operating force. 4.2.10 Coupling device cnnhinatioa tievice A device used in the speed governor to ensure the linkage between the runner blade and the blade seeker or the new direction finder and the nozzle needle. 4.211 Oil receiver
A device installed on the beam turbine to receive the pressure oil from the runner main pressure chest to make the runner relay work. 4.3 Flow turbine
4. 3. 1 Outer guide ring The conical outer ring that supports the guide vane shaft and the control ring is part of the outer wall of the flow channel. 4. 3.2 Inner guide ring The inner ring that supports the guide vane shaft is part of the inner wall of the flow channel. 4. 3.3 Bulb
A streamlined shell where the generator is installed in the flow channel. 4.3.4 Bulb support
A streamlined support that supports the bulb body.
4.4 Impulse turbine
4.4.1 Buckel
The flow surface is double-shaped and is the component that realizes the energy conversion of the runner. 4. 4.2 Branch pipe
A branch pipe that evenly supplies water to two nozzles. 4.4.3 Diverter pipe
In a vertical impulse turbine, a ring-shaped pipe that evenly supplies water to multiple nozzle branches. 4.4.4 Nozzle branch
A short pipe located before the nozzle to supply water:
4.4.5 Housing
The housing that prevents the water flow from the runner from splashing and supports the nozzle. 4.4.6 Nozzle
A converging nozzle that forms a high-speed jet and sprays it into the bucket. 4.4.7 Needle neadle
A movable needle-shaped part installed at the head of the nozzle cavity, used to adjust the full amount of the jet. 4.4.8 Deflector
A device installed in front of the nozzle to reverse the speed of all or part of the jet so that it does not hit the bucket when stopping or climbing load, also known as a diverter or diverter.
4.4.9 Brake nozzle
An additional nozzle that brakes the runner with the back of the bucket to shorten the stopping process: 4.4.10 Eedle servon A liquid positive part that supplies the operating force of the needle.
4.5 Accumulator pump
4.5.1 Suction pipe
The pipe that guides water flow into the impeller
4.5.2 Impeller
GB/T 2900.45-:1996
The rotating part that converts mechanical energy into water flow energy (the turbine is called the runner). 4. 5.3 Impeller blade, impeller vane The main component of the impeller to achieve energy conversion (the turbine is called the blade). 4.5.4 Impeller back cover Impeller beck shrond The component connected to the main shaft at the rear end of the fixed impeller blade. 4.5.5 Impeller front cover Impeller ron1 shroud The component that fixes the front end of the impeller blade.
4.5.6 Spiral hotusing
The spiral component that collects the water flow out of the impeller.
4. 5.7 Diffuser
The stage of reducing the velocity of water flow and converting it into pressure energy. 4.6 Pump turbine*
5 Performance parameters
5.1 Specific energy
5. 1. 1 Specific energy specific cncrgy
The mechanical energy possessed by a unit mass of fluid is the sum of position specific energy, pressure specific energy and velocity specific energy. E- E +E +E.
-Specific energy, J/kg+
In the formula, E_
Position specific energy, J/kg:
E,-Pressure specific energy. J/kg!
E Velocity specific energy, J/kg.
5.1.2Position specific energy potential energy The gravitational potential energy of a unit mass of fluid relative to the reference plane, F, = gz
Where: g--gravitational acceleration, m/s\;
Height relative to the reference, m.
5.1.3Pressure specific energy pressure energy
The pressure energy of a unit mass of fluid. E,
Where: Fluid density, kg/tn*;
p---body pressure, Pa.
5.1.4Velocity specific energy velocity energy
The kinetic energy of a unit mass of fluid,
Where:
5.2 Head
Average flow velocity, m/s,
Terms for water turbines are generally the same as those for water turbines. When operating a water pump, the terminology can be used. ...()
5. 2. 1 Position head Positive head The head corresponding to position specific energy.
Symbol of quantity: Hz
Unit: m
5.2.2 Pressure head
Pressure head
The head corresponding to pressure specific energy.
Symbol: H.
Unit m
5.2.3 Velocity head
velocityhead
The head corresponding to velocity specific energy,
symbol of quantity: H.
Unit: m
5.2.4 Total head head
GB/T 2900.45—1996
, = E/g -- Z
H, - E,g = plpg
, E/g = u/2g
The total head is the sum of the position head, pressure head and velocity head. H-. H.+H,+H,
Symbol of quantity: H
Unit: m
5.2.5 Gross head
The elevation difference between the upstream and downstream water levels of a hydropower station. Symbol of quantity: H
Unit: m
5.2. 6 Net head
The total head difference between the inlet and outlet sections of a turbine, i.e., the effective head of the turbine. Symbol of quantity: H.
Unit: m
5.2.7 Rated head
The minimum net head of a turbine at rated speed when it produces rated power. Symbol of quantity: H
Unit: m
5.2.8 Design head design head
Net head when turbine is operating at the highest efficiency point. Symbol of quantity: H
Unit: m
5.2. 9 Maximum [minimum head maximum _minimumjhead The maximum and minimum values ​​of turbine head within the operating range. Symbol of quantity: H[H]
Unit: m
5.2.10 Weighted average head weighted average head The weighted average value of turbine head within the operating range of the power station, taking into account load and working duration. Symbol of quantity: Hf%
-*（7）
++*(8)
Unit n
GB/T 2900.45--1996
5.2.11 Storage pump head difference between the discharge and inlet measurement sections of the energy storage pump, symbol of quantity: H,
Unit: m
5.2.12 Zero flow head of energy storage pump nu-dischargehead of storage pump The head with zero flow when running at rated speed. Symbol of quantity:
Unit +m
5.2.13 Maximum [minimum] aximum Lminimum of energy storage pump hcad of storage pump The maximum [minimum] value of head allowed to be achieved under specified operating conditions. Symbol of quantity: Hp.max[Hfgmle]
Unit: m
5.3 Flow
5.3.1 Turbine flowLurbinedischarge, urbineflowTateThe volume of water passing through the measuring section of the turbine inlet per unit time. Symbol of quantity: Q
Unit i/s
5.3.2 Storage pump flowstorage pump discharge.storage pump flow rateThe volume of water passing through the measuring section of the turbine outlet per unit time. Quantity row number: Q,
5.3.3 Rated flowrateddischargg
The flow rate of the turbine at rated head and rated speed when it outputs rated power. Symbol of quantity: Q:
Unit: ml/s
5.3.4 No-load discharge of tutbine The maximum discharge when the output power of the turbine is zero at rated head and rated speed. Symbol of quantity: Q.
Unit: m/s
5.3.5 Maximum[mintum]storage purmp discharge The maximum[minum]storage purmp discharge allowed by the storage pump under the specified operating range and rated transfer. Symbol of quantity: QQu.m"
Unit: m*/s
5.4 Speed
5.4.1 Rated speed
rated speed
The steady-state speed selected during design.
Symbol of quantity: n
Unit: tr/in
5.4.2 Runaway speed of turbine The maximum speed when the turbine is in an uncontrolled state and the shaft end load torque is zero. Symbol: nam.
Unit: r/min
GB/T 2900.45
5.4.3 Reverse runaway speed of storage pump The maximum speed of the storage pump rotating in the direction of the turbine when the motor is powered off. Symbol of quantity: n.ra
Unit: 1/min
5.5 Pressure
5.5.1 Gauge pressure (referred to as pressure)
gaugepressure
The gauge pressure displayed above or below the ambient pressure. Quantity symbol: force
Unit: Pa
5.5.2 Ambient pressure (or atmospheric pressure) atmosphericpressure The atmospheric pressure of the surrounding air.
Quantity symbol:.
Unit: Pa
5.5.3 Absolute pressureabsolutepressure The algebraic sum of the gauge pressure and the ambient pressure. Quantity symbol: pab
Unit: Pa
5. 5. 4 Vapor pressurevapour pressure The absolute pressure at which water vaporizes at the altitude and temperature. Quantity symbol: pe
Unit, Pa
5.6 Power
5.6.1 Turbine input powerturbine input power The hydraulic power of the turbine inlet water flow. Symbol of quantity: P
Unit; kw
turbine output power
5.6.2 Turbine output power
The mechanical power output of the turbine main shaft.
Symbol of quantity, Pa
Unit: k
5.6.3 Rated outpur power cf turbineThe power that the turbine can continuously output at rated head and rated speed. Symbol of quantity: P.
Unit: kw
5.6.4 Storage pump output power storage pump output power The hydraulic power of the storage output water flow. Symbol of quantity: Pu.1
Unit: kw
5.6.5 Storage pump input pawerThe mechanical power transmitted to the storage pump main shaft. Symbol of quantity: PE
Unit: kw
5.6.6 Maximum input power of storage pump rateditnputpuwerof storagepumpGB/T 2900.45—1996
The power required by the storage pump at rated speed and maximum flow. Symbol of quantity: Pr
Unit: kw
5. 6.7 No-discharge input power of storage pump Input power of storage pump at rated speed and zero flow, symbol of quantity: Paaia
Unit: kw
5. 6.8 Minimum input power of storage pump Minimum input power of storage pump to maintain stable operation under specified conditions, symbol of quantity: Pp.min ir
Unit: kw
5. 6. 9 Output power of runneroutput power of runnerThe power transmitted to the main shaft by the turbine runner.
Symbol of quantity: Pan.u
Unit: kwWww.bzxZ.net
5. 6. 10 Input power of impellerThe power transmitted to the impeller by the main shaft of the storage pump.
Symbol of quantity: Pimp.m
Unit: kw
5. 6. 11 Input power of runnerinput power of runnerThe hydraulic power possessed by the water flow entering the turbine runner. Symbol of quantity: Paa.n
Unit; kw
5.6.12 Impeller output power our pur.power of impeller The hydraulic power of the water flow at the outlet of the impeller of the energy storage pump, symbol of quantity, Pampoat
Unit: kw
5.7 Efficiency
5.7.1 Efficiency efficiencyy
The ratio of output power to input power.
Symbol of quantity: 7
5.7.2 Mechanical efficiency of turbine mechanical efficiencyof turbine The ratio of turbine output power to runner output power. Symbol of quantity, Bre
5.7.3 Mechanical efficiency of storage pump e: mechanical efficiency of storage pump The ratio of storage pump impeller input power to storage pump input power. Symbol of quantity: 7p.mrc
5.7.4 Hydraulic efficiency of turbine The ratio of turbine runner output power to runner input power Symbol of quantity: 7ayd
5.7.5 Hydraulic efficiency of storage pump The ratio of storage pump impeller output power to impeller input power. Symbol of quantity: .m
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