CN111173725A - Device is verified in vice technological research of plunger pump key friction - Google Patents
Device is verified in vice technological research of plunger pump key friction Download PDFInfo
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- CN111173725A CN111173725A CN201911407585.8A CN201911407585A CN111173725A CN 111173725 A CN111173725 A CN 111173725A CN 201911407585 A CN201911407585 A CN 201911407585A CN 111173725 A CN111173725 A CN 111173725A
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- pressure
- oil tank
- plunger pump
- filter
- temperature sensor
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B51/00—Testing machines, pumps, or pumping installations
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
- F04B1/12—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis
- F04B1/122—Details or component parts, e.g. valves, sealings or lubrication means
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B17/00—Pumps characterised by combination with, or adaptation to, specific driving engines or motors
- F04B17/03—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/10—Valves; Arrangement of valves
Abstract
The invention provides a technical research and verification device for a key friction pair of a plunger pump, which consists of a hydraulic oil source system, a force loading system, a friction pair rotor transmission system and a plunger pump installation system for simulating the running environment of a real swash plate type axial plunger pump. The invention simulates the running environment of a real plunger pump, the whole research verification device comprises the components of a valve plate, a plunger, a piston shoe, a chuck, a pressure plate, a swash plate, a rotor, a shaft and the like as the real plunger pump, even the used plunger, piston shoe, chuck, pressure plate, swash plate, rotor, shaft and the like are directly from the real plunger pump, and through the research on the abrasion mechanism and the rule of a key friction pair, a new technology and a new measure for strengthening and protecting the friction surface and the resultant stress level can be obtained, thereby having important significance for further researching the long service life technology of the plunger pump. The invention has scientific structure, good manufacturability and wide popularization and application value.
Description
The technical field is as follows:
the invention provides a technical research and verification device for a key friction pair of a plunger pump, and belongs to the field of hydraulic transmission.
Background art:
the plunger pump is the 'heart' of a hydraulic system, the plunger pump forms a small-sized precise mechanical tribology system, the abrasion life of the plunger pump is far shorter than the fatigue life of the plunger pump, the reason is that the rapid abrasion of a key friction pair accelerates the performance degradation, the service life of the plunger pump is limited, the technical research of the key friction pair of the plunger pump is developed along with the development of the plunger pump to high speed, high pressure and large flow, the positive significance is provided for the improvement of the service life of the plunger pump, and the technical research and verification device of the key friction pair of the plunger pump is essential for developing the technical research of the plunger pump. At present, the research on the verification device is less, only two friction disks with simple structures are adopted to replace key friction pair components in the plunger pump to carry out the shallow research, and the research work on the friction pair of the plunger pump cannot be deeply carried out.
The invention provides a technical research and verification device for a key friction pair of a plunger pump, which simulates the operation environment of a real plunger pump, is similar to the operation condition of the real plunger pump, and has important significance for deeply researching the long-life technology of an aviation plunger pump.
The invention content is as follows:
OBJECT OF THE INVENTION
The purpose of the invention is as follows: the device is used for verifying the technical research of the key friction pair of the plunger pump, and provides an important guarantee for deeply developing the long-service-life technology of the aviation plunger pump.
Technical scheme
The technical scheme adopted by the invention is as follows: a device for researching and verifying key friction pair technology of a plunger pump comprises a hydraulic oil source system, a force loading system and a friction pair rotor transmission system, and is characterized by also comprising a plunger pump installation system for simulating a real swash plate type axial plunger pump operating environment;
preferably, the plunger pump mounting system comprises a port plate (26), a housing (29), a first pin (43), a second pin (37); their relationship to each other is: the valve plate (26) and the shell (29) are positioned by a first pin (43) and are fixedly connected by a screw, and the shell (29) and the mounting seat (32) are positioned by a second pin (37) and are fixedly connected by a screw;
preferably, the hydraulic oil source system comprises a main oil tank (11), a first electric pump set (8), a pressure-resistant oil tank (14), a first filter (12), a second filter (13), a heater (6), a first overflow valve (5), a first cooler (7), an outlet pressure regulating module (I), a first flowmeter (19), a second flowmeter (20), a first temperature sensor (42), a first pressure sensor (41), a second temperature sensor (45), a second pressure sensor (44), a first pressure regulating valve (4), an electromagnetic ball valve (3), a third filter (1) and a second cooler (2); their relationship to each other is: one end of a first cooler (7) is arranged on a main oil tank (11), the other end of the first cooler (7) is connected with one end of an electromagnetic ball valve (3) through a heater (6), the other end of the electromagnetic ball valve (3) is connected with a pressure-resistant oil tank (14), the pressure-resistant oil tank (14) is connected with a first electric pump set (8) sequentially through a second filter (13) and a first filter (12), the other end of the first electric pump set (8) is connected with the main oil tank (11), two ends of a first overflow valve (5) are respectively connected with the heater (6) and the first filter (12), two ends of a first pressure regulating valve (4) are respectively connected with two ends of the electromagnetic ball valve (3), an oil drain port (T) is connected with one end of a first flowmeter (19) through a first pressure sensor (41) and a first temperature sensor (42), the other end of the first flowmeter (19) is connected with a second cooler (2) through a third filter (1), the other end of the second cooler (2) is connected with a pressure-resistant oil tank (14), an oil inlet (A) is connected with the pressure-resistant oil tank (14) through a second temperature sensor (45) and a second pressure sensor (44), an oil outlet (P) is connected with one end of a second flowmeter (20) through an outlet pressure regulating module (I), and the other end of the second flowmeter (20) is connected with a third filter (1);
preferably, a third temperature sensor (10) and a first liquid level sensor (9) are arranged on the main oil tank (11);
preferably, a fourth temperature sensor (17), a second liquid level sensor (16) and a third pressure sensor (15) are arranged on the pressure-resistant oil tank (14);
preferably, the outlet pressure regulating module (I) comprises a second pressure regulating valve (21), a second overflow valve (18), a fourth pressure sensor (25) and a fifth temperature sensor (24); their relationship to each other is: one end of the second pressure regulating valve (21) is connected with the second flowmeter (20), the other end of the second pressure regulating valve is connected with the oil outlet (P) through a fifth temperature sensor (24) and a fourth pressure sensor (25), and two ends of the second overflow valve (18) are respectively connected with two ends of the second pressure regulating valve (21).
Preferably, the force loading system comprises an oil tank (48), a fourth filter (51), a second electric pump group (60), a fifth pressure sensor (59), a sixth temperature sensor (58), a fifth filter (57), a sixth filter (56), an energy accumulator (55), a pressure servo valve (54), a third overflow valve (53), a seventh temperature sensor (23), a sixth pressure sensor (22), a hydraulic cylinder (47), a pull pressure sensor (46) and a third cooler (52); their relationship to each other is: a fourth filter (51) and a third cooler (52) are connected to the oil tank (48), the other end of the third cooler (52) is connected with one end of a third overflow valve (53), the other end of the third overflow valve (53) is respectively connected with a fifth pressure sensor (59) and a sixth temperature sensor (58), the other end of the fifth pressure sensor (59) is connected with one end of a second electric pump group (60), the other end of the second electric pump group (60) is connected with the fourth filter (51), the other end of the sixth temperature sensor (58) sequentially passes through the fifth filter (57) and the sixth filter (56), the energy accumulator (55) is connected with the pressure servo valve (54), the other end of the pressure servo valve (54) is connected with one end of the hydraulic cylinder (47) sequentially through the sixth pressure sensor (22) and the seventh temperature sensor (23), and one end of the hydraulic cylinder (47) is connected with the tension pressure sensor (46).
Preferably, the oil tank (48) is an open oil tank, and an eighth temperature sensor (49) and a third liquid level sensor (50) are arranged on the oil tank (48);
preferably, the friction pair rotating body transmission system comprises a driving motor and a gear box; their relationship to each other is: the friction pair rotor transmission system drives a shaft (36) to rotate through a gear box by a driving motor, and a rotating speed measuring instrument is further arranged between the shaft (36) and the gear box.
The structure of each part, device, and element itself of each system component is detailed below:
hydraulic oil source system
The hydraulic oil source system comprises a main oil tank (11), a first electric pump set (8), a pressure-resistant oil tank (14), a first filter (12), a second filter (13), a heater (6), a first overflow valve (5), a first cooler (7), an outlet pressure regulating module (I), a first flowmeter (19), a second flowmeter (20), a first temperature sensor (42), a first pressure sensor (41), a second temperature sensor (45), a second pressure sensor (44), a first pressure regulating valve (4), an electromagnetic ball valve (3), a third filter (1) and a second cooler (2); the outlet pressure regulating module (I) comprises a second pressure regulating valve (21), a second overflow valve (18), a fourth pressure sensor (25) and a fifth temperature sensor (24); wherein a third temperature sensor (10) and a first liquid level sensor (9) are arranged on the main oil tank (11); wherein a fourth temperature sensor (17), a second liquid level sensor (16) and a third pressure sensor (15) are arranged on the pressure-resistant oil tank (14);
(II) force loading system
The force loading system comprises an oil tank (48), a fourth filter (51), a second electric pump group (60), a fifth pressure sensor (59), a sixth temperature sensor (58), a fifth filter (57), a sixth filter (56), an energy accumulator (55), a pressure servo valve (54), a third overflow valve (53), a seventh temperature sensor (23), a sixth pressure sensor (22), a hydraulic cylinder (47), a pull pressure sensor (46) and a third cooler (52); the oil tank (48) is an open oil tank, and an eighth temperature sensor (49) and a third liquid level sensor (50) are arranged on the oil tank (48);
(III) Friction pair rotor transmission system
The friction pair rotor transmission system comprises a driving motor and a gear box;
(IV) plunger pump mounting system
The plunger pump mounting system comprises a valve plate (26), a shell (29), a first pin (43) and a second pin (37);
structure of main oil tank (11): the device is a cuboid structure with the length of 600 mm, the width of 400 mm and the height of 480 mm, and the volume is 100L;
the first electric pump set (8) is an existing gear pump product;
the second electric pump unit (60) is the existing plunger pump product;
the pressure-resistant oil tank (14) is a cylindrical structure with the diameter of 300 mm and the height of 700 mm; the volume is 40L;
the first filter (12), the second filter (13), the third filter (1), the fourth filter (51), the fifth filter (57) and the sixth filter (56) are selected according to the existing product models;
the heater (6) is an existing product;
the first overflow valve (5), the second overflow valve (18) and the third overflow valve (53) are all of the existing product models;
the first cooler (7), the second cooler (2) and the third cooler (52) are all selected according to the requirements;
the first flow meter (19) and the second flow meter (20) are selected according to the requirements of the existing product models;
the first temperature sensor (42), the second temperature sensor (45), the third temperature sensor (10), the fourth temperature sensor (17), the fifth temperature sensor (24), the sixth temperature sensor (58), the seventh temperature sensor (23) and the eighth temperature sensor (49) are all of the same product type;
the first pressure sensor (41), the second pressure sensor (44) and the third pressure sensor (15) are all the same type of the existing products; the fourth pressure sensor (25), the fifth pressure sensor (59) and the sixth pressure sensor (22) are of another existing product type;
the first pressure regulating valve (4) and the second pressure regulating valve (21) are of the existing product models;
the electromagnetic ball valve (3) is an existing product;
the first liquid level sensor (9), the second liquid level sensor (16) and the third liquid level sensor (50) are all of the existing product models;
the oil tank (48) is a cuboid structure with the length of 400 mm, the width of 400 mm and the height of 380 mm; the volume is 40L;
the energy accumulator (55) is an existing product;
the pressure servo valve (54) is an existing product;
the pull pressure sensor (46) is an existing product;
the driving motor is an existing product;
the gear box is made of the existing product;
the hydraulic cylinder (47) requires: the cylinder diameter is 16mm, and the rod diameter is 10 mm;
the valve plate (26) is a cylindrical structure with the thickness of 15 mm, and three holes for mounting displacement sensors are uniformly distributed on the valve plate and used for testing the thickness of an oil film between the valve plate (26) and a plunger pump rotor (27);
the shell (29) is a cylindrical structure with the thickness of 3 mm, and screw mounting holes are formed in two ends of the shell in a protruding mode;
the first pin (43) and the second pin (37) are cylindrical structures with a diameter of 3 mm;
the oil inlet (A), the oil outlet (P) and the oil drainage port (T) are of circular pipeline structures.
Advantages and effects of the invention
The invention provides a technical research and verification device for a key friction pair of a plunger pump, which simulates the operating environment of a real plunger pump, and the whole research and verification device comprises components such as a valve plate, a plunger, a sliding shoe, a chuck, a pressing plate, a swash plate, a rotor, a shaft and the like as the real plunger pump, even the used plunger, sliding shoe, chuck, pressing plate, swash plate, rotor, shaft and the like are directly from the real plunger pump, and the valve plate is modified according to the real plunger pump in a certain adaptability way, so the technical research and verification device for the key friction pair of the plunger pump is similar to the operating condition of the real plunger pump. By researching the wear mechanism and the wear rule of the key friction pair, a new technology and a new measure for strengthening and protecting the friction surface and the resultant stress level can be obtained, and the method has important significance for further researching the long-service-life technology of the aviation plunger pump. The invention has scientific structure, good manufacturability and wide popularization and application value.
Description of the drawings:
fig. 1 is a schematic diagram of a device for verifying the technical study of a key friction pair of a plunger pump.
Fig. 2 is a schematic diagram of a hydraulic oil source system of the device for researching and verifying the key friction pair technology of the plunger pump.
Fig. 3 is a schematic diagram of an outlet pressure regulating module (i) of a key friction pair technical research verification device of a plunger pump.
Fig. 4 is a schematic diagram of a force loading system of a device for verifying the technical study of a key friction pair of a plunger pump.
Fig. 5 is a schematic diagram of a plunger pump mounting system of a plunger pump key friction pair technical research verification device.
Fig. 6 is a schematic diagram of a friction pair rotor transmission system of a key friction pair technical research verification device of a plunger pump.
The numbers, symbols and codes in the figures are explained as follows:
1-third filter, 2-second cooler, 3-electromagnetic ball valve, 4-first pressure regulating valve, 5-first overflow valve, 6-heater, 7-first cooler, 8-first electric pump group, 9-first liquid level sensor, 10-third temperature sensor, 11-main oil tank, 12-first filter, 13-second filter, 14-pressure resistant oil tank, 15-third pressure sensor, 16-second liquid level sensor, 17-fourth temperature sensor, 18-second overflow valve, 19-first flowmeter, 20-second flowmeter, 21-second pressure regulating valve, 22-sixth pressure sensor, 23-seventh temperature sensor, 24-fifth temperature sensor, 25-fourth pressure sensor, 26-port plate, 27-plunger pump rotor, 28-plunger pump plunger, 29-shell, 30-supporting swash plate, 31-large bearing, 32-mounting seat, 33-small bearing, 34-tail cover, 35-leather cup, 36-shaft, 37-second pin, 38-third pin, 39-plunger pump chuck, 40-plunger pump pressure plate, 41-first pressure sensor, 42-first temperature sensor, 43-first pin, 44-second pressure sensor, 45-second temperature sensor, 46-pulling pressure sensor, 47-hydraulic cylinder, 48-oil tank, 49-eighth temperature sensor, 50-third liquid level sensor, 51-fourth filter, 52-third cooler, 53-third overflow valve, 54-pressure servo valve, 55-accumulator, 56-sixth filter, 57-fifth filter, 58-sixth temperature sensor, 59-fifth pressure sensor, 60-second motor-pump group;
a-oil inlet P-oil outlet T-oil drainage port I-outlet pressure regulating module
The specific implementation mode is as follows:
for a better understanding of the present invention, reference is made to the following detailed description taken in conjunction with the accompanying drawings.
Please refer to fig. 1 to 6, which are schematic diagrams illustrating a device for verifying a key friction pair of a plunger pump according to the present invention.
The invention discloses a device for researching and verifying key friction pair technology of a plunger pump, which comprises a hydraulic oil source system, a force loading system, a friction pair rotor transmission system and a plunger pump installation system for simulating a real swash plate type axial plunger pump operation environment.
The plunger pump mounting system comprises a port plate 26, a housing 29, a first pin 43 and a second pin 37, wherein the port plate 26 and the housing 29 are positioned by the first pin 43 and are fixedly connected by screws, and the housing 29 and a mounting seat 32 are positioned by the second pin 37 and are fixedly connected by screws. The flow distribution plate 26, the shell 29 and the mounting seat 32 form an inner cavity for mounting verified plunger pump key friction pair parts, including a verified plunger pump rotor 27, a plunger pump plunger 28, a bearing swash plate 30, a large bearing 31, a mounting seat 32, a small bearing 33, a tail cover 34, a leather cup 35, a shaft 36, a plunger pump chuck 39 and a plunger pump pressing plate 40, wherein the plunger pump plunger 28 is mounted in a hole of the plunger pump rotor 27, the tail cover 34 is fixedly connected to the mounting seat 32 through a screw, the bearing swash plate 30 is positioned through a third pin 38 and is fixedly connected to the mounting seat 32 through a screw, the shaft 36 is supported by the large bearing 31 and the small bearing 33, shaft tail leakage oil is sealed through the leather cup 35, the plane of the plunger pump pressing plate 40 is in planar fit with the plunger pump chuck 39, and the plunger pump pressing plate 40 is fixedly connected to the bearing swash plate 30 through a screw.
The hydraulic oil source system comprises a main oil tank 11, a first electric pump group 8, a pressure-resistant oil tank 14, a first filter 12, a second filter 13, a heater 6, a first overflow valve 5, a first cooler 7, an outlet pressure regulating module I, a first flow meter 19, a second flow meter 20, a first temperature sensor 42, a first pressure sensor 41, a second temperature sensor 45, a second pressure sensor 44, a first pressure regulating valve 4, an electromagnetic ball valve 3, a third filter 1 and a second cooler 2, wherein the relations among the main oil tank 11, the first electric pump group 8, the pressure-resistant oil tank 14, the first filter 12, the second filter 13, the heater 6, the first overflow: one end of a first cooler 7 is arranged on a main oil tank 11, the other end of the first cooler 7 is connected with one end of an electromagnetic ball valve 3 through a heater 6, the other end of the electromagnetic ball valve 3 is connected with a pressure-resistant oil tank 14, the pressure-resistant oil tank 14 is connected with a first electric pump unit 8 through a second filter 13 and a first filter 12 in sequence, the other end of the first electric pump unit 8 is connected with the main oil tank 11, two ends of a first overflow valve 5 are respectively connected with the heater 6 and the first filter 12, two ends of a first pressure regulating valve 4 are respectively connected with two ends of the electromagnetic ball valve 3, an oil drain port T is connected with one end of a first flowmeter 19 through a first pressure sensor 41 and a first temperature sensor 42, the other end of the first flowmeter 19 is connected with a second cooler 2 through a third filter 1, the other end of the second cooler 2 is connected with the pressure-resistant oil tank 14, an oil, The second pressure sensor 44 is connected with the pressure-resistant oil tank 14, the oil outlet P is connected with one end of the second flowmeter 20 through the outlet pressure regulating module i, and the other end of the second flowmeter 20 is connected with the third filter 1.
The hydraulic oil source system mainly achieves the functions of supplying oil to an oil inlet A of the plunger pump, supplying loading to an oil outlet P of the plunger pump and filtering and cooling oil. The hydraulic oil source system oil enters the pressure-resistant oil tank 14 from the main oil tank 11 through the first electric pump group 8, meanwhile, the circulating heating function is achieved through the heater 6, then the oil enters the oil inlet A of the plunger pump, along with the rotation of the plunger pump, the oil is discharged from the oil outlet P of the plunger pump, the pressure of the outlet of the plunger pump is adjusted through the outlet pressure adjusting module I, and finally the oil returns to the pressure-resistant oil tank 14 through the second flowmeter 20, the third filter 1 and the second cooler 2. The temperature of the oil entering the oil inlet A of the plunger pump is controlled in a closed loop mode by a heater 6, a first cooler 7 and a second temperature sensor 45 in the temperature regulation of the hydraulic oil source system. The first pressure regulating valve 4 and the electromagnetic ball valve 3 are used for controlling the pressure of the pressure-resistant oil tank 14, so that the pressure of the oil inlet A of the plunger pump is regulated. The first overflow valve 5 plays a role of safety protection, the first flow meter 19 is used for monitoring the flow of the drain port T of the hydraulic oil source system, the second flow meter 20 is used for monitoring the flow of the oil outlet P of the plunger pump, the second temperature sensor 45 and the second pressure sensor 44 are used for monitoring the temperature and the pressure of the oil inlet A of the plunger pump, and the first temperature sensor 42 and the first pressure sensor 41 are used for monitoring the temperature and the pressure of the drain port T of the plunger pump.
The main oil tank 11 is a device that supplies hydraulic oil to the hydraulic oil source system. The main oil tank 11 is provided with a third temperature sensor 10 and a first liquid level sensor 9, wherein the third temperature sensor 10 is used for monitoring the temperature of oil in the main oil tank 11, and the first liquid level sensor 9 is used for monitoring the liquid level in the main oil tank 11.
The pressure-resistant oil tank 14 mainly realizes the function of supplementing oil for the oil inlet A of the plunger pump. A fourth temperature sensor 17, a second level sensor 16 and a third pressure sensor 15 are provided on the pressure-resistant oil tank 14, wherein the fourth temperature sensor 17 is used to monitor the temperature of the oil in the pressure-resistant oil tank 14, the second level sensor 16 is used to monitor the level of the oil in the pressure-resistant oil tank 14, and the third pressure sensor 15 is used to monitor the pressure in the pressure-resistant oil tank 14. When the test bench works, hydraulic oil in the main oil tank 11 passes through the first electric pump unit 8, the first filter 12 and the second filter 13 and then is injected into the pressure-resistant oil tank 14, and finally the hydraulic oil is supplied to the oil inlet A of the plunger pump.
The outlet pressure regulating module I comprises a second pressure regulating valve 21, a second overflow valve 18, a fourth pressure sensor 25 and a fifth temperature sensor 24, and the relationship among the second pressure regulating valve, the second overflow valve, the fourth pressure sensor and the fifth temperature sensor is as follows: one end of the second pressure regulating valve 21 is connected with the second flowmeter 20, the other end is connected with the oil outlet P through a fifth temperature sensor 24 and a fourth pressure sensor 25, and two ends of the second overflow valve 18 are respectively connected with two ends of the second pressure regulating valve 21. The outlet pressure regulating module I is arranged at an oil outlet P of the plunger pump, the second pressure regulating valve 21 is used for regulating the pressure of the oil outlet P of the plunger pump, the second overflow valve 18 plays roles of constant pressure overflow and safety protection, the fourth pressure sensor 25 is used for monitoring the pressure at the oil outlet P of the plunger pump, and the fifth temperature sensor 24 is used for monitoring the temperature at the oil outlet P of the plunger pump.
The force loading system comprises an oil tank 48, a fourth filter 51, a second electric pump group 60, a fifth pressure sensor 59, a sixth temperature sensor 58, a fifth filter 57, a sixth filter 56, an accumulator 55, a pressure servo valve 54, a third overflow valve 53, a seventh temperature sensor 23, a sixth pressure sensor 22, a hydraulic cylinder 47, a pull pressure sensor 46 and a third cooler 52, and the relationship among the oil tank, the fourth filter 51, the second electric pump group 60, the fifth pressure sensor 59, the sixth temperature sensor 58, the sixth pressure sensor 22, the hydraulic cylinder 47, the pull pressure sensor 46 and the third: one end of a fourth filter 51 and one end of a third cooler 52 are arranged on the oil tank 48, the other end of the third cooler 52 is connected with one end of a third overflow valve 53, the other end of the third overflow valve 53 is respectively connected with a fifth pressure sensor 59 and a sixth temperature sensor 58, the other end of the fifth pressure sensor 59 is connected with one end of a second electric pump unit 60, the other end of the second electric pump unit 60 is connected with the fourth filter 51, the other end of the sixth temperature sensor 58 is connected with a pressure servo valve 54 through the fifth filter 57, the sixth filter 56 and an energy accumulator 55 in sequence, the other end of the pressure servo valve 54 is connected with one end of a hydraulic cylinder 47 through the sixth pressure sensor 22 and the seventh temperature sensor 23 in sequence, and one end of the hydraulic cylinder 47 is provided with a pull pressure sensor 46.
The function of the force loading system is to provide a pressing force for the thrust plate 26 and the plunger pump rotor 27 to the friction pair end surface for balancing the hydraulic thrust at the sealing belt of the friction pair, and the thickness of the oil film on the friction pair end surface is changed within a proper clearance range by adjusting the pressing force of the friction pair end surface. The second electric pump unit 60 sucks the hydraulic oil filtered by the fourth filter 51, the hydraulic oil output by the second electric pump unit 60 passes through the pressure servo valve 54, the hydraulic oil with controllable pressure is output to the hydraulic cylinder 47, the hydraulic oil output to the hydraulic cylinder 47 is controllable in pressure, the force acting on the piston rod of the hydraulic cylinder 47 is controllable, the piston rod of the hydraulic cylinder 47 transmits the force to the plunger pump rotor 27 through a spring, so that a controllable pressing force is generated between the plunger pump rotor 27 and the port plate 26, and the control of the magnitude of the pressing force is mainly realized by adjusting the pressure of the hydraulic oil output by the force loading system. The third overflow valve 53 plays a role in safety protection and constant pressure overflow, the energy accumulator 55 is used for absorbing hydraulic impact, eliminating pulsation and reducing noise, the pressure servo valve 54 is used for adjusting the hydraulic pressure input into the hydraulic cylinder 47 so as to change the magnitude of pressing force between the plunger pump rotor 27 and the port plate 26, the sixth temperature sensor 58 is used for monitoring the temperature of the oil output by the second electric pump unit 60, the fifth pressure sensor 59 is used for monitoring the pressure of the oil output by the second electric pump unit 60, and the fifth filter 57 and the sixth filter 56 are used for filtering impurities in the oil entering the pressure servo valve 54. Meanwhile, the surplus oil discharged from the second motor-pump group 60 is cooled by the third cooler 52 and returned to the oil tank 48. The seventh temperature sensor 23 is used for monitoring the temperature of oil entering the hydraulic cylinder, the sixth pressure sensor 22 is used for monitoring the pressure of the oil entering the hydraulic cylinder, the tension pressure sensor 46 is installed between piston rods connected with the plunger pump rotor 27 and used for directly measuring the pressing force between the plunger pump rotor 27 and the valve plate 26, meanwhile, the tension pressure sensor and the pressure servo valve 54 form loading force closed-loop control together, and the third cooler 52 is used for cooling the oil of the force loading system.
The function of the oil tank 48 is to supply oil to the force loading system, which is an open tank. The oil tank 48 is provided with an eighth temperature sensor 49 and a third liquid level sensor 50, wherein the third liquid level sensor 50 is used for monitoring the liquid level of the oil tank 48, and the eighth temperature sensor 49 is used for monitoring the temperature of the oil tank 48.
The function of the friction pair rotor drive system is to provide rotary drive power to the plunger pump being validated. The friction pair rotor transmission system comprises a driving motor and a gear box, the driving motor drives the shaft 36 to rotate through the gear box, and a rotating speed measuring instrument is further installed between the shaft 36 and the gear box. The friction pair rotor transmission system drives the shaft 36 to rotate through the gear box by the driving motor, and the rotating speed measuring instrument is used for detecting the rotating speed of the shaft 36.
The structure of each part, device, and element itself of each system component is detailed below:
hydraulic oil source system
The hydraulic oil source system comprises a main oil tank 11, a first electric pump set 8, a pressure-resistant oil tank 14, a first filter 12, a second filter 13, a heater 6, a first overflow valve 5, a first cooler 7, an outlet pressure regulating module I, a first flowmeter 19, a second flowmeter 20, a first temperature sensor 42, a first pressure sensor 41, a second temperature sensor 45, a second pressure sensor 44, a first pressure regulating valve 4, an electromagnetic ball valve 3, a third filter 1 and a second cooler 2; the outlet pressure regulating module I comprises a second pressure regulating valve 21, a second overflow valve 18, a fourth pressure sensor 25 and a fifth temperature sensor 24; wherein, a third temperature sensor 10 and a first liquid level sensor 9 are arranged on the main oil tank 11; wherein a fourth temperature sensor 17, a second liquid level sensor 16 and a third pressure sensor 15 are provided on the pressure-resistant oil tank 14.
(II) force loading system
The force loading system comprises an oil tank 48, a fourth filter 51, a second electric pump group 60, a fifth pressure sensor 59, a sixth temperature sensor 58, a fifth filter 57, a sixth filter 56, an accumulator 55, a pressure servo valve 54, a third overflow valve 53, a seventh temperature sensor 23, a sixth pressure sensor 22, a hydraulic cylinder 47, a tension pressure sensor 46 and a third cooler 52; the oil tank 48 is an open oil tank, and an eighth temperature sensor 49 and a third liquid level sensor 50 are arranged on the oil tank 48.
(III) Friction pair rotor transmission system
The friction pair rotor transmission system comprises a driving motor and a gear box.
(IV) plunger pump mounting system
The plunger pump mounting system includes port plate 26, housing 29, first pin 43, and second pin 37.
Structure of main oil tank 11: the device is a cuboid structure with the length of 600 mm, the width of 400 mm and the height of 480 mm, and the volume is 100L;
structure of the first motor-pump group 8: the gear pump product is an existing gear pump product, and the model number of the gear pump product is ALP 2A-D-50-FG/V;
structure of the second motor-pump group 60: the existing plunger pump product is selected, and the model number is F11-10-R-B-CV-K;
structure of pressure-resistant oil tank 14: the device is a cylindrical structure with the diameter of 300 mm and the height of 700 mm, and the volume is 40L;
structure of the first filter 12 and the second filter 13: the existing product is selected, and the model number is B025C 400;
structure of the third filter 1: the existing product is selected, and the model number is G025C 650;
structure of the fourth filter 51: the existing product is selected, and the model is PHB420FV0S 11;
structures of the fifth filter 57 and the sixth filter 56: the existing product is selected, and the model number is B420C 280;
structure of heater 6: the existing product is selected, and the model number is KN-JRQ-300 KW;
the first, second, and third relief valves 5, 18, and 53 have the following configurations: the existing product is selected, and the model number of the existing product is RP-3A-22-C-K;
first cooler 7 and second cooler 2 have the following structures: the existing product is selected, and the model number is SW 05-80-V;
structure of the third cooler 52: the existing product is selected, and the model number of the existing product is SW 05-102-V;
structure of the first flow meter 19: the existing product is selected, and the model number of the existing product is CLG-4;
structure of the second flow meter 20: the existing product is selected, and the model number of the existing product is CLG-20;
structures of the fourth pressure sensor 25, the fifth pressure sensor 59, and the sixth pressure sensor 22: selecting the existing product, wherein the model is MPM480[ 0-50 MPa ];
first and second pressure regulating valves 4 and 21: the existing product is selected, and the model is RP-3A-2G-W-8+ PRB-8A-2D-W;
structure of the electromagnetic ball valve 3: the method selects the existing product with the model number of JL-900-Q1-A1-C2-40-16-P4-F;
structures of the first, second, and third liquid level sensors 9, 16, and 50: the existing product is selected, and the model is XF 3803;
structure of the oil tank 48: the device is a cuboid structure with the length of 400 mm, the width of 400 mm and the height of 380 mm, and the volume is 40L;
structure of the accumulator 55: the existing product is selected, and the model number is NXQA-10/350-L-Y;
structure of pressure servo valve 54: the existing product is selected, and the model number of the existing product is YF-1;
structure of the pulling pressure sensor 46: the existing product is selected, and the model number of the product is JSM;
structure of the driving motor: the existing product is selected, and the model number is Z4-280-21;
the structure of the gear box is as follows: the existing product is selected, and the model is CLSY 200-Z400;
the requirements of the hydraulic cylinder 47 are: the cylinder diameter is 16mm, and the rod diameter is 10 mm;
structure of port plate 26: the device is a cylinder structure with the thickness of 15 mm, three holes for mounting displacement sensors are uniformly distributed on the cylinder structure, and the holes are used for testing the thickness of an oil film between the valve plate 26 and the plunger pump rotor 27;
structure of the housing 29: the screw is a cylindrical structure with the thickness of 3 mm, and screw mounting holes are formed in two ends of the cylindrical structure in a protruding mode;
structure of the first pin 43 and the second pin 37: is a cylindrical structure with the diameter of 3 mm;
oil inlet A's structure: the circular pipeline structure with the drift diameter of 20 mm is adopted;
structure of oil outlet P: the circular pipeline structure with the drift diameter of 16mm is adopted;
the structure of the oil drainage port T: is a circular pipeline structure with the drift diameter of 10 millimeters.
Claims (7)
1. The utility model provides a vice technical research verification device of plunger pump key friction which characterized in that: the device consists of a hydraulic oil source system, a force loading system, a friction pair rotor transmission system and a plunger pump installation system for simulating the running environment of a real swash plate type axial plunger pump;
the plunger pump mounting system comprises a valve plate (26), a shell (29), a first pin (43) and a second pin (37); their relationship to each other is: the port plate (26) and the housing (29) are positioned by a first pin (43) and are connected by screw fastening, and the housing (29) and the mounting seat (32) are positioned by a second pin (37) and are connected by screw fastening;
the hydraulic oil source system comprises a main oil tank (11), a first electric pump set (8), a pressure-resistant oil tank (14), a first filter (12), a second filter (13), a heater (6), a first overflow valve (5), a first cooler (7), an outlet pressure regulating module (I), a first flowmeter (19), a second flowmeter (20), a first temperature sensor (42), a first pressure sensor (41), a second temperature sensor (45), a second pressure sensor (44), a first pressure regulating valve (4), an electromagnetic ball valve (3), a third filter (1) and a second cooler (2); their relationship to each other is: one end of a first cooler (7) is arranged on a main oil tank (11), the other end of the first cooler (7) is connected with one end of an electromagnetic ball valve (3) through a heater (6), the other end of the electromagnetic ball valve (3) is connected with a pressure-resistant oil tank (14), the pressure-resistant oil tank (14) is connected with a first electric pump set (8) sequentially through a second filter (13) and a first filter (12), the other end of the first electric pump set (8) is connected with the main oil tank (11), two ends of a first overflow valve (5) are respectively connected with the heater (6) and the first filter (12), two ends of a first pressure regulating valve (4) are respectively connected with two ends of the electromagnetic ball valve (3), an oil drain port (T) is connected with one end of a first flowmeter (19) through a first pressure sensor (41) and a first temperature sensor (42), the other end of the first flowmeter (19) is connected with a second cooler (2) through a third filter (1), the other end of the second cooler (2) is connected with a pressure-resistant oil tank (14), an oil inlet (A) is connected with the pressure-resistant oil tank (14) through a second temperature sensor (45) and a second pressure sensor (44), an oil outlet (P) is connected with one end of a second flowmeter (20) through an outlet pressure regulating module (I), and the other end of the second flowmeter (20) is connected with a third filter (1);
a third temperature sensor (10) and a first liquid level sensor (9) are arranged on the main oil tank (11);
a fourth temperature sensor (17), a second liquid level sensor (16) and a third pressure sensor (15) are arranged on the pressure-resistant oil tank (14);
the outlet pressure regulating module (I) comprises a second pressure regulating valve (21), a second overflow valve (18), a fourth pressure sensor (25) and a fifth temperature sensor (24); their relationship to each other is: one end of a second pressure regulating valve (21) is connected with a second flowmeter (20), the other end of the second pressure regulating valve is connected with an oil outlet (P) through a fifth temperature sensor (24) and a fourth pressure sensor (25), and two ends of a second overflow valve (18) are respectively connected with two ends of the second pressure regulating valve (21);
the force loading system comprises an oil tank (48), a fourth filter (51), a second electric pump group (60), a fifth pressure sensor (59), a sixth temperature sensor (58), a fifth filter (57), a sixth filter (56), an energy accumulator (55), a pressure servo valve (54), a third overflow valve (53), a seventh temperature sensor (23), a sixth pressure sensor (22), a hydraulic cylinder (47), a pull pressure sensor (46) and a third cooler (52); their relationship to each other is: a fourth filter (51) and a third cooler (52) are connected to the oil tank (48), the other end of the third cooler (52) is connected with one end of a third overflow valve (53), the other end of the third overflow valve (53) is respectively connected with a fifth pressure sensor (59) and a sixth temperature sensor (58), the other end of the fifth pressure sensor (59) is connected with one end of a second electric pump group (60), the other end of the second electric pump group (60) is connected with the fourth filter (51), the other end of the sixth temperature sensor (58) sequentially passes through the fifth filter (57) and the sixth filter (56), the energy accumulator (55) is connected with the pressure servo valve (54), the other end of the pressure servo valve (54) is connected with one end of the hydraulic cylinder (47) sequentially through the sixth pressure sensor (22) and the seventh temperature sensor (23), and one end of the hydraulic cylinder (47) is connected with the tension pressure sensor (46);
the oil tank (48) is an open oil tank, and an eighth temperature sensor (49) and a third liquid level sensor (50) are arranged on the oil tank (48);
the friction pair rotor transmission system comprises a driving motor and a gear box; their relationship to each other is: the friction pair rotor transmission system drives a shaft (36) to rotate through a gear box by a driving motor, and a rotating speed measuring instrument is also arranged between the shaft (36) and the gear box;
the structure of each part, device, and element itself of each system component is detailed below:
hydraulic oil source system
The hydraulic oil source system comprises a main oil tank (11), a first electric pump set (8), a pressure-resistant oil tank (14), a first filter (12), a second filter (13), a heater (6), a first overflow valve (5), a first cooler (7), an outlet pressure regulating module (I), a first flowmeter (19), a second flowmeter (20), a first temperature sensor (42), a first pressure sensor (41), a second temperature sensor (45), a second pressure sensor (44), a first pressure regulating valve (4), an electromagnetic ball valve (3), a third filter (1) and a second cooler (2); the outlet pressure regulating module (I) comprises a second pressure regulating valve (21), a second overflow valve (18), a fourth pressure sensor (25) and a fifth temperature sensor (24); wherein a third temperature sensor (10) and a first liquid level sensor (9) are arranged on the main oil tank (11); wherein a fourth temperature sensor (17), a second liquid level sensor (16) and a third pressure sensor (15) are arranged on the pressure-resistant oil tank (14);
(II) force loading system
The force loading system comprises an oil tank (48), a fourth filter (51), a second electric pump group (60), a fifth pressure sensor (59), a sixth temperature sensor (58), a fifth filter (57), a sixth filter (56), an energy accumulator (55), a pressure servo valve (54), a third overflow valve (53), a seventh temperature sensor (23), a sixth pressure sensor (22), a hydraulic cylinder (47), a pull pressure sensor (46) and a third cooler (52); the oil tank (48) is an open oil tank, and an eighth temperature sensor (49) and a third liquid level sensor (50) are arranged on the oil tank (48);
(III) Friction pair rotor transmission system
The friction pair rotor transmission system comprises a driving motor and a gear box;
(IV) plunger pump mounting system
The plunger pump mounting system comprises a valve plate (26), a shell (29), a first pin (43) and a second pin (37);
structure of main oil tank (11): the device is a cuboid structure with the length of 600 mm, the width of 400 mm and the height of 480 mm, and the volume is 100L;
the first electric pump group (8) is a gear pump product;
the second motor-pump group (60) is a plunger pump product;
the pressure-resistant oil tank (14) is of a cylindrical structure;
the oil tank (48) is of a cuboid structure;
the hydraulic cylinder (47) requires: the cylinder diameter is 16mm, and the rod diameter is 10 mm;
the valve plate (26) is of a cylindrical structure, and three holes for mounting displacement sensors are uniformly distributed on the valve plate and used for testing the thickness of an oil film between the valve plate (26) and a plunger pump rotor (27);
the shell (29) is a cylindrical structure, and two ends of the shell are provided with screw mounting holes in a protruding mode;
the first pin (43) and the second pin (37) are of cylindrical construction;
the oil inlet (A), the oil outlet (P) and the oil drainage port (T) are of circular pipeline structures.
2. The device for verifying the technical research on the key friction pair of the plunger pump according to claim 1, wherein: the pressure-resistant oil tank (14) of the cylindrical structure has a diameter of 300 mm, a height of 700 mm and a volume of 40L.
3. The device for verifying the technical research on the key friction pair of the plunger pump according to claim 1, wherein: the oil tank (48) of the cuboid structure is 400 mm long, 400 mm wide, 380 mm high and 40L in volume.
4. The device for verifying the technical research on the key friction pair of the plunger pump according to claim 1, wherein: the cylindrical structure of the valve plate (26) has a cylindrical thickness of 15 mm.
5. The device for verifying the technical research on the key friction pair of the plunger pump according to claim 1, wherein: the cylindrical thickness of the case (29) of the cylindrical structure is 3 mm.
6. The device for verifying the technical research on the key friction pair of the plunger pump according to claim 1, wherein: the first pin (43) and the second pin (37) of the cylindrical structure have a cylindrical diameter of 3 mm.
7. The device for verifying the technical research on the key friction pair of the plunger pump according to claim 1, wherein: the drift diameter of the oil inlet (A) of the circular pipeline structure is 20 millimeters, the drift diameter of the oil outlet (P) of the circular pipeline structure is 16 millimeters, and the drift diameter of the oil drainage port (T) of the circular pipeline structure is 10 millimeters.
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| CN112412725A (en) * | 2020-10-27 | 2021-02-26 | 中国航空工业集团公司金城南京机电液压工程研究中心 | Hydraulic pump oil film research device of adjustable swash plate angle |
| CN112855514A (en) * | 2021-01-13 | 2021-05-28 | 浙江大学 | High-pressure high-speed hydraulic pump friction pair test bed based on double-swash-plate opposite-top driving |
| CN113669247A (en) * | 2021-08-23 | 2021-11-19 | 西安交通大学 | Experimental system for researching external flow field oil liquid flow heat transfer characteristics of plunger pump |
| CN114623128A (en) * | 2022-03-31 | 2022-06-14 | 中南大学 | Hydraulic system for testing oil film characteristic of flow distribution pair of axial plunger pump |
| CN117307474A (en) * | 2023-10-18 | 2023-12-29 | 浙江大学 | Test bed and test system for testing oil film characteristics of flow distribution pair |
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