JOINT-STOCK COMPANY GIDROPRIVOD. RADIAL PISTON PUMPS OF VARIABLE DISPLACEMENT type 50 НРР

Transcription

1 JOINT-STOCK COMPANY GIDROPRIVOD RADIAL PISTON PUMPS OF VARIABLE DISPLACEMENT type 50 НРР

2 Item purpose Radial piston pumps of variable displacement of the type 50НРР with adjustable delivery and constant direction of operational liquid are meant for general machinery in hydraulic drives. The pumps are meant for operation on mineral oils of viscosity from 21 to 265 mm 2 /s (sst) at oil temperature from +10 to + 50 С and medium temperature from 0 to +50 С. The recommended operational liquid is mineral oil of the type ВНИИ НП-403 ГОСТ , ИГП-30, ИГП-38 according to ТУ Nominal filtering capacity is 40 microns. Operational liquid cleanliness level is 14 according to ГОСТ Disposition category 4, climatic version УХЛ and О according to ГОСТ Version О is for countries with tropic climate. 2

3 Pump designation structure: 5 0 Н Р Р Х Х Х Х Х Х - Х Д For л я pumps н а с о with с о в mechanism с м е х а н и M з м о power м " М supply " т о к of п и electromagnet л е к т р о м а г н и т а : т а н и я э Б Without е з о б о designation з н а ч е н и я is - alternating п е р е м е н current н ы й 50Hz Г ц 110V 110 В ; 1- alternating current 60Hz 220V; 1 п е р е м е н н ы й 60 Г ц 220 В ; 2- direct current 2 - п о с т о я н н ы й For pumps with mechanism D1 Д л я н а с о с о в с м е х а н и з м о м " Д 1 " Without designation is mode 2. Б е з о 1- б о з mode н а ч е н 1 и я - р е ж и м 2 ; 1 р 2- е ж и mode м 1 ; р 3- е ж и mode м 3 ; р 4- е ж и mode м 4 4 Б Without е з о б о designation з н а ч е н и я - is УХЛ4 и с п о л version н е н и е У Х Л 4 ; О O4 4 is general о б щ е к climatic л и м а т и version ч е с к о е и с п о л н е н и е ; Б Without е з о б о з н designation а ч е н и я - н is е п non-submersible о г р у ж н о г о и с п о version л н е н и я ; П - is п submersible о г р у ж н о г о version и с п о л н е н и я ; Without Б е з о б о designation з н а ч е н и я is - п right-hand р а в о е в р rotation а щ е н и е ; Л is - л left-hand е в о е в р rotation. а щ е н и е. Б Without е з о б о з designation н а ч е н и я - is ф flange л а н ц е fastening в о е к р е п л е н и е ; К- is к р foot е п л fastening е н и е н а л а п а х Т Mechanism и п м е х а н type и з м according а с о г л а с н to о the т а л table и ц е 1 Р Operational а б о ч и й о volume, б ъ е м, с cm м 33 Radial Н а с о с р а piston д и а л ь н о pump - п о р ш н of е в о й variable displacement р е г у л и р у е м adjusted ы й н а н at о м nominal и н а л ь н pressure о е up д а в to л 50 е н и MPa. е д о 50 М П а Order example: Radial piston pump with variable displacement with operational volume 250 сm 3, with manual delivery adjustment, flange, right-hand rotation, version УХЛ4. 50НРР 250Р The same with feet fastening 50НРР 250РК The same with drive shaft left-hand rotation 50НРР 250РКЛ Radial-piston pump of variable displacement with operational volume 500 сm 3, with electro-magnetic mechanism of delivery adjustment, flange, right-hand rotation, version О4, supply current of electro-magnets is constant 24 V 3

4 50НРР500М О4-2 Version of delivery change mechanisms are given in the table 1. Table 1 - Construction of delivery change mechanisms. Construction of delivery change mechanisms Designation of delivery change mechanism Characteristics of delivery change mechanism construction With following delivery change mechanism With manual delivery change mechanism With power regulator С Р Д1 The pump provides operation at any delivery, which is in the range from nominal to zero. Setting of delivery is performed with driving device (for example, with cam, master cam or some other) The pump provides operation at any delivery, which is in the range from nominal to zero. Setting of delivery is manual. The pump provides operation in the mode of constant power. The delivery setting is automatic, depends on operational pressure at pump outlet. With electro-magnetic delivery change mechanism М The pump provides operation at any of four deliveries from nominal to minimal. Delivery setting is provided by electro-magnet switching-on, switching-on sequence of every of four fixed deliveries is random. With hydraulic delivery change mechanism Г The pump provides operation at any delivery in the range from nominal to zero, depending on control pressure. 4

5 Conventional graphic symbol of the pumps is given at drawing 1. Р Ш Р П Р Ш Р П а Т б Т Р Ш Р П 4 Р Ш Р П Т Т в г Р Ш Р П д а 50НРР Р; b 50НРР С; c 50НРР М; d 50НРР Д1; e - 50НРР С Drawing 1 Conventional graphic symbol of the pumps. Т Technical data Main technical data and pump parameters at operation with mineral oil of mm 2 /s (sst) viscosity, at nominal revolution speed and outlet pressure are given in the table 2. 5

6 Table 2 Pump main technical parameters Parameter name 1 Nominal operational volume of the pump, cm 3 : а) axial-piston; b) gear 2 Revolution speed, s 1 : - nominal; - maximal; - minimal 3 Pump delivery, l/min: а) axial-piston: - nominal; - minimal b) gear 4 Pressure at pump outlet, МPа: а) axial-piston: - nominal; - maximal b) gear: - nominal; - maximal 5 Pressure at pump inlet, МPа: - maximal; - minimal 6 Pump delivery factor, not less than: а) axial-piston; b) gear Parameter value ,5 3 +0,05-0,02 0,9 0,83 7 Pump efficiency, not less than 0,91 8 Pump power, kw , ,6 16,

7 Table 2 (continuation) Parameter name 9 Pump weight (without working liquid), kg not more than: Flange version - 50НРР Р and 50НРР С; - 50НРР Д1 and 50НРР Г; - 50НРР М Foot version - 50НРР Р and 50НРР С; - 50НРР Д1 and 50НРР Г; - 50НРР М Parameter value Full 90%life-time, hours % operation until failure, hours 3900 Note 1 Dependence of delivery factor and pump efficiency on the delivery at nominl pressure is shown on drawings 2,3. 2 Power of the pumps (type 50НРР Д1), depending on pressure is shown on the drawing Technical data of delivery change mechanisms are shown in the table Overall and joint dimensions are given on the drawings 2, 3, 4 and in the table The allowed duration of maximal pressure continuous action should be not more than 40 seconds with load bread of not less than four seconds. At these modes 90% of life time is 1200 hours Uninterrupted duration at delivery less than minimal should not be more than 30 minutes. 7

8 Table 3 Adjustment parameter Mechanism type Parameter name Manual Following Electro-magnetic Power regulator Hydraulic Parameter value Torque, Н cm, not more than 25 Nut turn number, not more than 11 Direction of nut turn for delivery Clockwise increase Strengthening of exit rod of mechanism on delivery increase, moving to the 170 pump side, N, not more than Working stroke of mechanism rod, mm, 20 not more than Allowed number of switching per 40 minute Quantity of adjustment delivery 4 Allowed number of switching per 40 minute Time of delivery change from minimal to nominal and vice versa, seconds, not 0,2 more than Power consumption by electro-magnet, 26 W Allowed amount of operations per 40 minute Accuracy of the given mode of adjustment setting. ±10% Accuracy of support of set power value ±15% Allowed rate of pressure change at pump 350 outlet МPa/s, not more than Range of control pressure, МPа 0,15 +0,1 1-0,1 Liquid control flow consumption, l/min 8 15 Non-linearity of adjusting characteristic lies in range from 5% to 95% not more than 3% 8

9 d 5 d 6 d 3 l 3 l 6 Р п Т l 5 l 4 a 1 Р п Т d 4 4 h Е h 1 α d 1 d 2 g 6 t d h 6 D H l ± 0, 8 4 о т в. d 7 k 1 / 2 " Г О С Т х о д 2 0 Р ш b h Е h 4 h 3 l 2 ± 1 a ± 1 Р ш L a 2 ± 0, 3 a 3 Drawing 2 Overall and joint dimensions of the pumps 50НРР with electro-magnetic delivery change mechanism 9

10 З 6 H 7 Х о д а L б L Х о д 2 0 к 1 / 4 " Г О С Т L П о д в о д д а в л е н и я у п р а в л е н и я в L г Drawing 3 Delivery change mechanisms а following control 50НРР С; b manual control 50НРР Р; c power regulator 50НРР Д1; d hydraulic control 50НРР Г 10

11 Table 4 Overall and joint dimensions Pump designation L l 1 l 2 l 3 l 4 l 5 l 6 H h 1 h 2 h 3 h 4 а а 1 50НРР125С Р Д М Г НРР250С Р Д М Г СК РК Д1К МК ГК НРР500С Р Д М Г СК РК Д1К МК ГК

12 Are given in millimeters а 2 а 3 D d d 1 d 2 d 3 d 4 d 5 d 6 d 7 d 8 b t α M M M , M M27 2 M M M85 2 M

13 N 1, 0 0, 9 0, 8 0, 7 0, 6 0, 5 0, 4 0, 3 0, 2 0, Р [ M P a ] 1 maximal power of regulator adjustment; 2 и 3 possible intermediate modes of regulator adjustment; 4 minimal power of regulator adjustment N N =, where N pump power, kw, Nн nominal pump power N Н Drawing 4 Dependence of the pump 50НРР Д1 power on pressure for the given modes of adjustment: К Q % 1, 0 0, 9 0, 8 0, 7 0, 6 0, 5 0, 4 0, 3 0, 2 0, , 1 0, 2 0, 3 0, 4 0, 5 0, 6 0, 7 0, 8 0, 9 1, 0 Q Q =, where Q is pump delivery, Qн is nominal pump delivery Q Н Drawing 5 Dependence of pump delivery factor on the delivery at nominal pressure. Q 13

14 К П Д , 1 0, 2 0, 3 0, 4 0, 5 0, 6 0, 7 0, 8 0, 9 1, 0 Drawing 6 Piston pump efficiency dependence on delivery at nominal pressure. Q 14

15 е Drawing 7 Radial-piston pump 15