CN110836178A - Comprehensive test device for plunger pump flow distribution pair - Google Patents
Comprehensive test device for plunger pump flow distribution pair Download PDFInfo
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- CN110836178A CN110836178A CN201911281577.3A CN201911281577A CN110836178A CN 110836178 A CN110836178 A CN 110836178A CN 201911281577 A CN201911281577 A CN 201911281577A CN 110836178 A CN110836178 A CN 110836178A
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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
Abstract
The utility model provides a vice comprehensive test device of plunger pump flow distribution, belong to the hydraulic test device field, by the casing, the flow distribution cylinder, the cylinder body axle, cylinder body friction piece, flow distribution plate friction piece and flow distribution shaft are constituteed, casing and flow distribution cylinder contact together and link together through a screw through static seal ring, the cylinder body axle is installed in the casing through thrust ball bearing and rotatory sealing washer, cylinder body friction piece links together through No. two screws and cylinder body axle, flow distribution plate friction piece is connected together through No. two screws and flow distribution shaft, the flow distribution shaft is connected together through No. two screws and flow distribution cylinder contact and be connected together through stop pin and flow distribution cylinder through No. one dynamic seal circle and No. two dynamic seal rings and flow distribution cylinder. According to the invention, the oil can be input through the oil passage, so that the leakage oil quantity under different working conditions can be measured, and further the abrasion condition of the friction part can be obtained and the oil film thickness can be obtained.
Description
Technical Field
The invention relates to a comprehensive test device for a flow distribution pair of a plunger pump, in particular to a comprehensive test device which can realize the control of pressing force and separating force by a plurality of oil paths and measure and calculate the thickness of a friction oil film of the flow distribution pair, and belongs to the field of hydraulic test devices.
Background
At present, the aviation hydraulic pump mostly requires high-speed high-pressure working conditions, and in the existing hydraulic pump types, a plunger pump capable of realizing high-speed high-pressure is the best choice, and has the characteristics of high pressure resistance, high efficiency, large transmission power, wide rotating speed range and long service life. However, the operating conditions of high speed and high pressure tend to cause wear and damage to the friction discs on the one hand, and leakage of oil on the other hand, which reduces volumetric efficiency.
In order to solve the problems, fully ensure the safety and stability before practical application, a test bed is required to be built to test the performance requirements of the test bed, in a patent which is put into use and disclosed or authorized, the test bed is more expanded around a plunger pump, and because the manufacturing precision of the plunger pump is higher, the test cost is increased.
Disclosure of Invention
Aiming at the defects, the invention provides a comprehensive test device for a flow distribution pair of a plunger pump.
The invention is realized by the following technical scheme: a comprehensive test device of a plunger pump flow distribution pair is composed of a shell, a flow distribution cylinder barrel, a cylinder body shaft, a cylinder body friction piece, a flow distribution disc friction piece and a flow distribution shaft, wherein the shell and the flow distribution cylinder barrel are contacted together through a static sealing ring and connected together through a first screw, the cylinder body shaft is installed in the shell through a thrust ball bearing and a rotary sealing ring, the cylinder body friction piece is connected with the cylinder body shaft through a second screw, the flow distribution disc friction piece is connected with the flow distribution shaft through a second screw, the flow distribution shaft is connected with the flow distribution shaft through a second screw, and the flow distribution shaft is contacted with the flow distribution cylinder barrel through a first dynamic sealing ring and a second dynamic sealing ring and connected with the flow distribution cylinder barrel through a rotation stop pin.
Further, the casing connect gradually by casing upper end cover, casing center pillar and casing lower extreme lid and constitute, casing lower extreme lid with the inside of casing center pillar be equipped with the casing inner chamber, casing upper end cover processing step hole, step hole periphery be equipped with the rotary seal chamber, casing lower extreme lid surface be equipped with the casing screw hole, the casing screw hole be the non-through-hole structure, casing lower extreme lid surface in enclose and be equipped with the static seal chamber.
Further, the flow distribution cylinder barrel is formed by sequentially connecting a cylinder barrel upper end cover and a cylinder barrel center pillar, the cylinder barrel upper end cover and the inside of the cylinder barrel center pillar are provided with a cylinder barrel inner cavity, the outer side of the cylinder barrel center pillar is provided with a rotation stopping pin platform, the cylinder barrel center pillar is far away from the other side of the cylinder barrel upper end cover is provided with a flow distribution shaft mounting hole, the rotation stopping pin platform is provided with a pin hole and is communicated with the flow distribution shaft mounting hole, and a second dynamic sealing groove is formed in the flow distribution shaft mounting hole.
Furthermore, the cylinder shaft is formed by sequentially connecting a cylinder shaft flange plate, a cylinder body and a flow distribution driving shaft, a cylinder body central cavity is arranged in the cylinder body shaft flange plate, and a plunger hole and a cylinder shaft threaded hole are formed in the surface of the cylinder body shaft flange plate.
Further, the cylinder body friction piece support the area by cylinder body friction piece ring flange and cylinder body and connect and form, the cylinder body friction piece ring flange with the inside of cylinder body support the area and be equipped with cylinder body friction piece centre bore, cylinder body friction piece centre bore outside be equipped with the draining step, the outer lane of draining step on be equipped with cylinder body friction piece sealing band, cylinder body friction piece sealing band on be equipped with cylinder body waist type hole, cylinder body waist type hole be the through-hole and communicate to cylinder body friction piece ring flange surface, the periphery of cylinder body friction piece sealing band be equipped with cylinder body earial drainage passageway, the inboard surface of cylinder body friction piece ring flange be equipped with the friction piece screw hole.
Furthermore, the valve plate friction piece is formed by sequentially connecting a valve plate friction piece flange plate and an upper convex step, short through holes are formed in the valve plate friction piece flange plate and the upper convex step, a waist-shaped valve window communicated to the outer surface of the valve plate friction piece flange plate is arranged on the upper convex step, and a countersunk threaded hole is formed in the outer ring of the valve plate friction piece flange plate.
Furthermore, the flow distribution shaft is formed by sequentially combining a first stepped shaft, a second stepped shaft, a third stepped shaft, a fourth stepped shaft and a fifth stepped shaft, a first dynamic seal groove is arranged between the third stepped shaft and the fourth stepped shaft, a first flow distribution oil path and a second flow distribution oil path are symmetrically arranged on one axial side of the first stepped shaft, are through holes and are communicated with the axial outer side of the fifth stepped shaft, a loading oil path is arranged on the outer surface of the first stepped shaft, the loading oil path is L-shaped, the outlet of the loading oil path is positioned on one side of the second stepped shaft, an oil discharge path is arranged on the outer surface of the first stepped shaft, the oil discharge path is T-shaped, the outlet of the loading oil path is positioned on oil drainage channels arranged on two sides of the fifth stepped shaft, a rotation stopping groove is arranged on the first stepped shaft and on the outer side of the second flow distribution oil path, and a flow distribution shaft oil cavity is formed in the outer surface of the fifth stepped shaft inwards, and a flow distribution shaft threaded hole is formed in the periphery of the flow distribution shaft oil cavity.
Furthermore, the number of the first screw, the number of the shell threaded holes, the number of the cylinder shaft threaded holes, the number of the friction plate threaded holes, the number of the countersunk head threaded holes and the number of the valve shaft threaded holes are 6 and are uniformly distributed, the number of the second screw is 12, the first screw is screwed into the shell threaded holes and the cylinder threaded holes so as to connect the shell and the valve cylinder, the second screw is screwed into the cylinder shaft threaded holes and the friction plate threaded holes so as to connect the cylinder shaft and the cylinder friction piece, and the second screw is screwed into the countersunk head threaded holes and the valve shaft threaded holes so as to connect the valve plate friction piece and the valve shaft.
Furthermore, thrust ball bearing install on the flow distribution drive shaft and press on the step hole, rotary seal circle fix in the rotary seal intracavity and the cover is on the flow distribution drive shaft, quiet sealing washer fix in quiet sealing intracavity and with cylinder barrel upper end cover surface contact, No. one move the sealing washer and install in first move the seal groove, No. two move the sealing washer and install in second move the seal groove, this makes flow distribution cylinder barrel and flow distribution shaft contact together tightly, the stop the rotation pin insert in the pinhole and stop the rotation groove contact.
Furthermore, the material of the valve plate friction piece and the valve cylinder barrel can be 38CrMoAlA, the surface of the valve plate friction piece and the valve cylinder barrel is nitrided to be more than hv800, the depth of the valve plate friction piece and the valve cylinder barrel is nitrided to be 0.2, the center hardness of the valve cylinder barrel is 26-hrc, and the end face of an inner hole of the valve cylinder barrel is welded with a layer of tin bronze with the thickness of 0.35mm and 0.7mm respectively through vacuum diffusion welding, so that the valve cylinder barrel can give consideration to the strength of tin and the wear resistance of copper.
The invention has the advantages that:
1. the invention can realize the control of pressing force and separating force of oil transportation of multiple oil paths without additionally adding a plunger, thereby reducing the volume and weight of the test device;
2. the invention can realize the switching of working states (no load and loaded) through the difference of the oil transportation pressure of the first flow distribution oil circuit and the second flow distribution oil circuit, and simultaneously, the rotation speeds of the motors are different (high speed and low speed), thereby measuring the oil drainage amount under different working conditions;
3. the invention can control the pressure on the loading oil way to realize the change of the oil film thickness, and the oil film thickness can be calculated by the known flow of the oil unloading oil way through a formula.
Drawings
FIG. 1 is an isometric view of the present invention in its entirety;
FIG. 2 is an overall front view of the present invention;
FIG. 3 is an overall bottom view of the present invention;
FIG. 4 is an overall front and rear half sectional view of the present invention;
FIG. 5 is an overall left and right half sectional view of the present invention;
FIG. 6 is an overall quarter cut away view of the present invention;
FIG. 7 is a quarter cut away view of a housing component of the present invention;
FIG. 8 is a quarter cut away view of a port cylinder section of the present invention;
FIG. 9 is a quarter cut away view of the cylinder shaft assembly of the present invention;
FIG. 10 is a view of a cylinder friction member assembly of the present invention;
FIG. 11 is a view of a port plate friction member component of the present invention;
FIG. 12 is a quarter cut away view of the oil distribution shaft component of the present invention.
In the figure, 1, a housing; 2. a flow distribution cylinder barrel; 3. a cylinder shaft; 4. a cylinder friction member; 5. a port plate friction member; 6. a valve shaft; 7. a first screw; 8. a thrust ball bearing; 9. rotating the sealing ring; 10. a static seal ring; 11. a first movable sealing ring; 12. a second movable sealing ring; 13. a second screw; 14. a rotation stopping pin; 101. an upper end cover of the shell; 102. a housing center pillar; 103. a stepped bore; 104. rotating the seal cavity; 105. a lower end cover of the shell; 106. an inner cavity of the shell; 107. a housing threaded bore; 108. a static seal cavity; 201. an upper end cover of the cylinder barrel; 202. a cylinder barrel center pillar; 203. the inner cavity of the cylinder barrel; 204. a rotation stop pin platform; 205. a port shaft mounting hole; 206. a second dynamic seal groove; 207. a pin hole; 208. a threaded hole of the cylinder barrel; 301. a cylinder shaft flange; 302. a cylinder body; 303. a flow distribution drive shaft; 304. a cylinder body central cavity; 305. a plunger hole; 306. a cylinder shaft threaded hole; 401. a cylinder friction member flange; 402. a cylinder body support band; 403. a cylinder block drain passage; 404. cylinder friction piece sealing belt; 405. a cylinder waist-shaped hole; 406. a cylinder friction piece center hole; 407. an oil drainage step; 408. a friction plate threaded hole; 501. a flange plate of a friction piece of the valve plate; 502. an upward protruding step; 503. a short through hole; 504. a waist-shaped flow distribution window; 505. countersunk threaded holes; 601. a first step shaft; 602. a second step axis; 603. a third step shaft; 604. a fourth stepped shaft; 605. a fifth stepped shaft; 606. an oil discharge path; 607. a first flow distribution oil path; 608. a second flow distribution oil passage; 609. loading an oil way; 610. a rotation stopping groove; 611. an oil drainage channel; 612. a port oil cavity; 613. a first dynamic seal groove; 614. the valve shaft screw hole.
Detailed Description
The invention is realized by the following technical scheme: a comprehensive test device for a plunger pump flow distribution pair comprises a shell 1, a flow distribution cylinder barrel 2, a cylinder body shaft 3, a cylinder body friction piece 4, a flow distribution plate friction piece 5 and a flow distribution shaft 6, wherein the shell 1 and the flow distribution cylinder barrel 2 are contacted together through a static seal ring 10 and connected together through a first screw 7, the cylinder body shaft 3 is installed in the shell 1 through a thrust ball bearing 8 and a rotary seal ring 9, the cylinder body friction piece 4 is connected with the cylinder body shaft 3 through a second screw 13, the flow distribution plate friction piece 5 is connected with the flow distribution shaft 6 through a second screw 13, and the flow distribution shaft 6 is contacted with the flow distribution cylinder barrel 2 through a first dynamic seal ring 11 and a second dynamic seal ring 12 and connected with the flow distribution cylinder barrel 2 through a stop pin 14.
The shell 1 is formed by sequentially connecting a shell upper end cover 101, a shell center pillar 102 and a shell lower end cover 105, a shell inner cavity 106 is arranged inside the shell lower end cover 105 and the shell center pillar 102, a step hole 103 is machined in the shell upper end cover 101, a rotary sealing cavity 104 is arranged on the periphery of the step hole 103, a shell threaded hole 107 is formed in the surface of the shell lower end cover 105, the shell threaded hole 107 is of a non-through hole structure, and a static sealing cavity 108 is arranged on the surface of the shell lower end cover 105 in an enclosing mode.
The flow distribution cylinder barrel 2 is formed by sequentially connecting a cylinder barrel upper end cover 201 and a cylinder barrel middle column 202, a cylinder barrel inner cavity 203 is arranged inside the cylinder barrel upper end cover 201 and the cylinder barrel middle column 202, a rotation stopping pin platform 204 is arranged on the outer side of the cylinder barrel middle column 202, a flow distribution shaft mounting hole 205 is formed in the other side, far away from the cylinder barrel upper end cover 201, of the cylinder barrel middle column 204, a pin hole 207 is formed in the rotation stopping pin platform 204 and communicated with the flow distribution shaft mounting hole 205, and a second dynamic seal groove 206 is formed in the flow distribution shaft mounting hole 205.
The cylinder shaft 3 is formed by sequentially connecting a cylinder shaft flange 301, a cylinder body 302 and a flow distribution driving shaft 303, a cylinder body central cavity 304 is arranged inside the cylinder shaft flange 301, and a plunger hole 305 and a cylinder shaft threaded hole 306 are arranged on the surface of the cylinder shaft flange 301.
The cylinder friction piece 4 is formed by connecting a cylinder friction piece flange 401 and a cylinder support band 402, a cylinder friction piece center hole 406 is arranged inside the cylinder friction piece flange 401 and the cylinder support band 502, an oil drainage step 407 is arranged outside the cylinder friction piece center hole 406, a cylinder friction piece sealing band 404 is arranged on the outer ring of the oil drainage step 407, a cylinder kidney-shaped hole 405 is arranged on the cylinder friction piece sealing band 404, the cylinder kidney-shaped hole 405 is a through hole and communicated to the outer surface of the cylinder friction piece flange 401, a cylinder drainage channel 403 is arranged on the periphery of the cylinder friction piece sealing band 404, and a friction piece threaded hole 408 is arranged on the inner side surface of the cylinder friction piece flange 401.
The valve plate friction member 5 is formed by sequentially connecting a valve plate friction member flange plate 501 and an upper convex step 502, a short through hole 503 is arranged inside the valve plate friction member flange plate 501 and the upper convex step 502, a waist-shaped valve window 504 communicated to the outer surface of the valve plate friction member flange plate 501 is arranged on the upper convex step 502, and a countersunk threaded hole 505 is formed in the outer ring of the valve plate friction member flange plate 501.
The flow distribution shaft 6 is formed by sequentially combining a first stepped shaft 601, a second stepped shaft 602, a third stepped shaft 603, a fourth stepped shaft 604 and a fifth stepped shaft 605, a first dynamic seal groove 613 is arranged between the third stepped shaft 603 and the fourth stepped shaft 504, a first flow distribution oil path 607 and a second flow distribution oil path 608 are symmetrically arranged on one axial side of the first stepped shaft 601 and are through holes and communicated with the axial outer side of the fifth stepped shaft 605, a loading oil path 609 is arranged on the outer surface of the first stepped shaft 601, the loading oil path 609 is L-shaped, an outlet of the loading oil path is positioned on one side of the second stepped shaft 602, an oil discharge path 606 is arranged on the outer surface of the first stepped shaft 601, the oil discharge path 606 is T-shaped, an oil drain passage 611 is arranged on two sides of the fifth stepped shaft 605, a stop rotary groove 610 is arranged on the first stepped shaft 601 and on the outer side of the second flow distribution oil path 608, and a flow distribution shaft 612 is arranged inwards on the outer surface of the fifth stepped shaft 605, and a port shaft threaded hole 614 is formed in the periphery of the port shaft oil chamber 612.
The number of the first screw 7, the number of the shell threaded holes 107, the number of the cylinder threaded holes 208, the number of the cylinder shaft threaded holes 306, the number of the friction plate threaded holes 408, the number of the countersunk threaded holes 505 and the number of the port shaft threaded holes 614 are 6 and are evenly distributed, the number of the second screw 13 is 12, the first screw 7 is screwed into the shell threaded holes 107 and the cylinder threaded holes 208 to connect the shell 4 and the port cylinder 5, the second screw 13 is screwed into the cylinder shaft threaded holes 306 and the friction plate threaded holes 408 to connect the cylinder shaft 3 and the cylinder friction piece 4, and the second screw 13 is screwed into the countersunk threaded holes 505 and the port shaft threaded holes 614 to connect the port plate friction piece 5 and the port shaft 6.
The thrust ball bearing 8 is arranged on the flow distribution driving shaft 303 and pressed on the stepped hole 103, the rotary sealing ring 9 is fixed in the rotary sealing cavity 104 and sleeved on the flow distribution driving shaft 303, the static sealing ring 10 is fixed in the static sealing cavity 108 and is in surface contact with the cylinder upper end cover 201, the first movable sealing ring 11 is arranged in the first movable sealing groove 613, the second movable sealing ring 12 is arranged in the second movable sealing groove 206, so that the flow distribution cylinder 2 and the flow distribution shaft 6 can be tightly contacted together, and the rotation stop pin 14 is inserted into the pin hole 207 and is in contact with the rotation stop groove 610.
The material of the valve plate friction piece 5 and the valve cylinder 2 can be 38CrMoAlA, the surface of the valve plate friction piece is nitrided to have hv of more than 800, the depth of the valve plate friction piece is 0.2, the center hardness of the valve plate friction piece is 26-hrc, and the end face of an inner hole of the valve cylinder 2 is welded with a layer of tin bronze with the thickness of 0.35mm and 0.7mm respectively by adopting vacuum diffusion welding so that the valve cylinder 2 has the strength of tin and the wear resistance of copper.
The working principle is as follows: in the use process of the invention, the flow distribution driving shaft 303 is driven to enable the cylinder body shaft 3 to rotate along with the cylinder body friction member 4 to rotate along with the second screw 13, meanwhile, hydraulic oil meeting pressure requirements is respectively introduced into the first flow distribution oil path 607 and the second flow distribution oil path 608, the loading oil path 609 provides pressing force of the flow distribution shaft 6 and the flow distribution plate friction member 5 through the hydraulic oil with given pressure, the hydraulic oil in the plunger hole 305 provides separating force of the flow distribution shaft 6 and the flow distribution plate friction member 5 and the cylinder body friction member 4, an oil film is formed between the cylinder body friction member 4 and the flow distribution plate friction member 5, the service life of the device can be effectively protected, meanwhile, oil drainage of the shell inner cavity 106 can flow out through the oil drainage channel 611 and the oil drainage oil path 606, and flow can be measured.
The first embodiment is as follows:
when the first flow distribution oil path 607 and the second flow distribution oil path 608 both feed hydraulic oil of 2MPa, they are regarded as no-load state, when the first flow distribution oil path 607 and the second flow distribution oil path 608 feed hydraulic oil of 2MPa and 35MPa, respectively, they are regarded as load state, the rotation speed of the corresponding motor is different, so that the rotation speed of the flow distribution shaft 6 is set as high speed and low speed state, respectively.
The second embodiment is as follows:
when the loading oil path 610 is filled with pressure to provide pressing force, since the separating force is almost unchanged, the pressing force is a main control force, different control forces can generate different oil film thicknesses between the cylinder friction member 4 and the port plate friction member 5, and different oil film thicknesses can also affect the leakage amount, in this embodiment, the flow rate of the oil discharge oil path 606 is measured under different loading pressures, and then the oil film thickness can be obtained by using the following formula:
the radius of two oil sealing belts formed by the flow distribution plate friction piece 5 and the cylinder body friction piece 4 is R from inside to outside in sequence1、R2、R3、R4，pbIs the pressure of the working oil,
the actual wrap angle of the high-pressure area is delta, the thickness of an oil film between the cylinder friction piece 5 and the valve plate friction piece 4 is delta, the dynamic viscosity of oil is mu, and meanwhile, the formula of the oil leakage quantity is as follows:
the thickness of the obtained oil film is as follows:the direct proportional relation between the oil film thickness delta and the cubic root of the flow q can be obtained.
It will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in the embodiments described above without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims.
Claims (10)
1. The utility model provides a vice comprehensive test device of plunger pump flow distribution comprises casing, flow distribution cylinder, cylinder body axle, cylinder body friction spare, valve plate friction spare and flow distribution shaft, its characterized in that: the cylinder body shaft is arranged in the shell through a thrust ball bearing and a rotary sealing ring, the cylinder body friction piece is connected with the cylinder body shaft through a second screw, the valve plate friction piece is connected with the valve shaft through a second screw, and the valve shaft is contacted with the valve cylinder through a first dynamic sealing ring and a second dynamic sealing ring and is connected with the valve cylinder through a stop pin.
2. The integrated test device of a plunger pump flow distribution pair of claim 1, wherein: the casing connect gradually by casing upper end cover, casing center pillar and casing lower extreme lid and constitute, the casing lower extreme lid with the inside of casing center pillar be equipped with the casing inner chamber, the casing upper end cover process out the step hole, the step hole periphery do not have the rotary seal chamber, casing lower extreme lid surface be equipped with the casing screw hole, the casing screw hole be the non-through-hole structure, casing lower extreme lid surface in enclose and be equipped with the static seal chamber.
3. The integrated test device of a plunger pump flow distribution pair of claim 1, wherein: the flow distribution cylinder barrel is formed by sequentially connecting a cylinder barrel upper end cover and a cylinder barrel center pillar, a cylinder barrel inner cavity is formed in the cylinder barrel upper end cover and the cylinder barrel center pillar, a rotation stopping pin platform is arranged on the outer side of the cylinder barrel center pillar, a flow distribution shaft mounting hole is formed in the other side, far away from the cylinder barrel upper end cover, of the cylinder barrel center pillar, a pin hole is formed in the rotation stopping pin platform and communicated with the flow distribution shaft mounting hole, and a second dynamic sealing groove is formed in the flow distribution shaft mounting hole.
4. The integrated test device of a plunger pump flow distribution pair of claim 1, wherein: the cylinder shaft is formed by sequentially connecting a cylinder shaft flange plate, a cylinder body and a flow distribution driving shaft, a cylinder body central cavity is arranged in the cylinder body shaft flange plate, and a plunger hole and a cylinder shaft threaded hole are formed in the surface of the cylinder body shaft flange plate.
5. The integrated test device of a plunger pump flow distribution pair of claim 1, wherein: the cylinder body friction piece be by cylinder body friction piece ring flange and cylinder body support area connect and constitute, the cylinder body friction piece ring flange with the inside of cylinder body support area be equipped with cylinder body friction piece centre bore, the cylinder body friction piece centre bore outside be equipped with the draining step, the outer lane of draining step on be equipped with cylinder body friction piece sealing strip, cylinder body friction piece sealing strip on be equipped with cylinder body waist type hole, cylinder body waist type hole be the through-hole and communicate to cylinder body friction piece ring flange surface, the periphery of cylinder body friction piece sealing strip be equipped with cylinder body earial drainage passageway, the inboard surface of cylinder body friction piece ring flange be equipped with the friction piece screw hole.
6. The integrated test device of a plunger pump flow distribution pair of claim 1, wherein: the flow distribution plate friction piece is formed by sequentially connecting a flow distribution plate friction piece flange plate and an upper convex step, short through holes are formed in the flow distribution plate friction piece flange plate and the upper convex step, a kidney-shaped flow distribution window communicated to the outer surface of the flow distribution plate friction piece flange plate is arranged on the upper convex step, and a countersunk threaded hole is formed in the outer ring of the flow distribution plate friction piece flange plate.
7. The integrated test device of a plunger pump flow distribution pair of claim 1, wherein: the flow distribution shaft is formed by sequentially combining a first stepped shaft, a second stepped shaft, a third stepped shaft, a fourth stepped shaft and a fifth stepped shaft, a first dynamic seal groove is arranged between the third stepped shaft and the fourth stepped shaft, a first flow distribution oil path and a second flow distribution oil path are symmetrically arranged on one axial side of the first stepped shaft and are through holes and communicated with the axial outer side of the fifth stepped shaft, a loading oil path is arranged on the outer surface of the first stepped shaft, the loading oil path is L-shaped, the outlet of the loading oil path is positioned on one side of the second stepped shaft, an oil discharge path is arranged on the outer surface of the first stepped shaft, the oil discharge path is T-shaped, the outlet of the oil discharge path is positioned on oil drainage channels arranged on two sides of the fifth stepped shaft, a rotation stopping groove is arranged on the first stepped shaft and on the outer side of the second flow distribution oil path, and a flow distribution shaft oil cavity is formed in the outer surface of the fifth stepped shaft inwards, and a flow distribution shaft threaded hole is formed in the periphery of the flow distribution shaft oil cavity.
8. The integrated test device of a plunger pump flow distribution pair of claim 1, wherein: the number of the first screw, the number of the shell threaded holes, the number of the cylinder barrel threaded holes, the number of the cylinder body shaft threaded holes, the number of the friction plate threaded holes, the number of the countersunk threaded holes and the number of the valve plate threaded holes are all 6 and are uniformly distributed, the number of the second screw is 12, the first screw is screwed into the shell threaded holes and the cylinder barrel threaded holes so as to connect the shell and the valve plate cylinder barrel, the second screw is screwed into the cylinder body shaft threaded holes and the friction plate threaded holes so as to connect the cylinder body shaft and the cylinder body friction piece, and the second screw is screwed into the countersunk threaded holes and the valve plate threaded holes so as to connect the valve plate friction piece and the.
9. The integrated test device of a plunger pump flow distribution pair of claim 1, wherein: the thrust ball bearing install on the flow distribution drive shaft and press on the step hole, rotary seal circle fix in the rotary seal intracavity and the cover is on the flow distribution drive shaft, quiet sealing washer fix in quiet sealing intracavity and with cylinder barrel upper end cover surface contact, No. one move the sealing washer and install in first move the seal groove, No. two move the sealing washer and install in second move the seal groove, this make flow distribution cylinder barrel and flow distribution shaft can tightly contact together, the stop the whirl round pin insert in the pinhole and contact with the stop whirl groove.
10. A combination testing device of a plunger pump distribution pair as claimed in claims 1-9, wherein: the friction piece of the flow distribution disc and the flow distribution cylinder barrel can be made of 38CrMoAlA, the surface of the friction piece is nitrided to be more than hv800, the depth of the friction piece of the flow distribution disc and the flow distribution cylinder barrel is 0.2, the center hardness of the friction piece of the flow distribution cylinder barrel is 26-hrc, and the end face of an inner hole of the flow distribution cylinder barrel is welded with a layer of tin bronze with the thickness of 0.35mm and 0.7mm respectively by adopting vacuum diffusion welding so that the flow distribution cylinder barrel can give consideration to the strength of tin.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113008718A (en) * | 2021-03-23 | 2021-06-22 | 太原科技大学 | Axial plunger pump flow distribution pair test device and method |
| CN114166676A (en) * | 2021-12-03 | 2022-03-11 | 中南大学 | Hydraulic pump flow distribution pair friction and wear testing device with online monitoring function |
| CN114776575A (en) * | 2022-05-26 | 2022-07-22 | 厦门大学 | Axial plunger pump flow distribution pair oil film thickness indirect measurement method |
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| JP2004198174A (en) * | 2002-12-17 | 2004-07-15 | Daiichi Denki Kk | Method and apparatus for measuring friction of slide mechanism |
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| CN101413812A (en) * | 2008-11-07 | 2009-04-22 | 浙江大学 | Device for testing plunger sub-oil film characteristic of plunger pump / motor |
| CN104074734B (en) * | 2014-07-02 | 2016-08-17 | 哈尔滨工业大学 | The oil film experimental apparatus for testing of plunger pair in a kind of plunger displacement pump |
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| CN106595462A (en) * | 2016-12-29 | 2017-04-26 | 北京理工大学 | Axial plunger pump flow distribution pair test oil membrane thickness test system |
| CN108266361A (en) * | 2017-12-01 | 2018-07-10 | 北京理工大学 | A kind of multi-functional axial plunger pump test prototype of research and test system |
| CN110146253A (en) * | 2019-05-15 | 2019-08-20 | 自然资源部天津海水淡化与综合利用研究所 | A kind of sea water desalination valve plate of plunger pump hydrodynamic lubrication effect visualized experiment platform |
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