CN209067351U - Self-operated type constant pressure oil supply device - Google Patents
Self-operated type constant pressure oil supply device Download PDFInfo
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- CN209067351U CN209067351U CN201821388239.0U CN201821388239U CN209067351U CN 209067351 U CN209067351 U CN 209067351U CN 201821388239 U CN201821388239 U CN 201821388239U CN 209067351 U CN209067351 U CN 209067351U
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Abstract
The utility model relates to Fluid pressure control field, in particular to a kind of self-operated type constant pressure oil supply device.The device includes pedestal, cover and piston apparatus, wherein the oil supply gallery including oil inlet and oil outlet is provided in pedestal；Cover covers on pedestal, and oil return opening is provided on cover；Piston apparatus is arranged in cover, piston apparatus includes fixed guide pole, piston cylinder and piston, wherein piston cylinder is supported on pedestal, the bottom of piston cylinder is connected to oil supply gallery, the side wall of piston cylinder is connected to the return port, the upper end of fixed guide pole and the top of cover connect, and the lower end of fixed guide pole is fixed on the bottom of piston cylinder, and piston can be sleeved on fixed guide pole up or down.The device controls the lubricants capacity of oil return opening by the up and down motion of piston, so as to provide stable charge oil pressure for gas turbine.
Description
Technical field
The utility model relates to Fluid pressure control field, in particular to a kind of self-operated type constant pressure oil supply device.
Background technique
Compressor set ties up the gas turbine test bay of repair center for boat remodeling gas turbine design.For safety
Consider, the lubricating oil system of test bay be mounted on in concrete enclosing cabin partition wall and the lubricating oil built, so lubricating oil
It is longer to prize the distance between feeding and return line line and gas turbine test bay.
In the lubricating oil system design of gas turbine test bay, need to guarantee that gas turbine itself oil pump inlet line supplies
Oil pressure is in a constant pressure limit.Existing test bay oil system configuration is ratio adjusting valve, gas turbine institute
The charge oil pressure needed by proportion adjustment valve regulation, no matter gas turbine rotary speed size, the charge oil pressure that ratio adjusting valve provides is equal
In an opposite range.
In the process of implementing the utility model, the inventor finds that the existing technology has at least the following problems: existing test run
Fuel delivery needed for gas turbine is determined by the revolving speed of gas turbine in platform oil system, and the adjustable range of ratio adjusting valve compared with
Small, charge oil pressure cannot accordingly be adjusted according to the revolving speed of gas turbine；Gas turbine is when high speed is promoted, gas turbine itself oil
The charge oil pressure of pump inlet pipeline cannot follow up rapidly, it sometimes appear that negative pressure, so that damaging bearing for shortage of oil；When combustion gas wheel
When machine revolving speed sharply declines, the charge oil pressure of gas turbine itself oil pump inlet line is not able to maintain stabilization again, sometimes sharply
Increase, or even will appear oil and flood phenomenon, gas turbine bearing bore is obturaged and is caused damages.
Utility model content
In view of this, the utility model embodiment provides a kind of self-operated type constant pressure oil supply device, preferably for combustion gas
Turbine provides constant charge oil pressure.The technical solution of the utility model embodiment is as follows:
A kind of self-operated type constant pressure oil supply device, which is characterized in that including pedestal, cover and piston apparatus, wherein
The oil supply gallery including oil inlet and oil outlet is provided in the pedestal；
The cover cover on the base, is provided with oil return opening on the cover；
The piston apparatus is arranged in the cover, and the piston apparatus includes fixed guide pole, piston cylinder and piston,
Wherein on the base, the bottom of the piston cylinder is connected to the oil supply gallery, the piston cylinder for the piston cylinder support
Side wall be connected to the oil return opening, the upper end of the fixed guide pole is connect with the top of the cover, the fixed guide
The lower end of bar is fixed on the bottom of the piston cylinder, and the piston can be sleeved on up or down on the fixed guide pole.
Selectable, the piston includes first piston portion and second piston portion, the first piston portion and described second
The first spring being set on the fixed guide pole is provided between piston portion, the second piston portion is arranged in the piston
In cylinder.
Selectable, the first piston portion includes connected up and down post head and plunger portion, the size of the plunger portion
It is adapted to enter into the piston cylinder, the size of the post head is suitable for that the post head is prevented to enter in the piston cylinder.
It is selectable, the second spring being set on fixed guide pole is provided between the post head and the cover.
Selectable, the bottom of the piston cylinder is provided with first through hole, and connection described first is provided on the pedestal
Second through-hole of through-hole and the oil supply gallery.
It is selectable, multiple third through-holes are provided on the barrel of the piston cylinder, wherein when the second piston portion with
When the bottom contact of the piston cylinder, it is not connected between the multiple third through-hole and the first through hole.
Selectable, the covering on top is provided with guide rod fixing port, and the top of the fixed guide pole is arranged in institute
It states in guide rod fixing port.
Selectable, the bottom of the piston cylinder is provided with the first threaded hole, and the lower end of the fixed guide pole is fixed on
In first threaded hole.
It is selectable, the second threaded hole is provided on the upside of the pedestal, the piston cylinder passes through second threaded hole
It fixes on the base.
It is selectable, third threaded hole is provided on the upside of the pedestal, the cover is solid by the third threaded hole
Determine on the base.
The beneficial effect of technical solution provided by the embodiment of the utility model is:
The piston of self-operated type constant pressure oil supply device provided by the embodiment of the utility model is in lubricating oil buoyancy and self gravity
Collective effect under move up and down, which is not controlled the fuel feeding of gas turbine by control system, only with the weight of piston and
Lubricating oil buoyancy is related.When gas turbine rotary speed is promoted, the lubricating oil into gas turbine becomes more, the pressure of the device oil outlet
Power will have downward trend, be reduced, be floated by the lubricants capacity that oil return opening flows back to fuel tank via multiple third through-holes on piston cylinder
Power decline, piston move down, and guarantee that gas turbine operates normally to provide the stable charge oil pressure of gas turbine.When gas turbine turns
When speed reduces, the lubricating oil into gas turbine is reduced, the pressure increase of oil supply gallery, on the pressure of the device oil outlet will have
The trend of liter increases into the lubricants capacity in piston cylinder, and buoyancy increases, and piston rises under the action of lubricating oil buoyancy, lubricates
Oil flows into piston cylinder from oil supply gallery via the first through hole of the bottom of the second through-hole and piston cylinder on pedestal, via piston cylinder
On multiple third through-holes increased by the lubricants capacity that oil return opening flows back to fuel tank, reduce the charge oil pressure of oil supply gallery, guarantee
Charge oil pressure before machine gas turbine is stablized.Lubricating oil is via the first through hole on the bottom of the second through-hole and piston cylinder on pedestal
Piston cylinder is flowed into, then fuel tank is flowed back to by natural gravity by the oil return opening on cover, oil return has both been avoided to make to enter combustion not in time
The lubricants capacity of gas-turbine is too big and oil occurs and floods phenomenon, in turn ensures the subsequent fuel feeding of fuel tank, eradicated ratio adjusting valve because
Charge oil pressure is unstable to production bring operational risk and hidden danger.And the principle of device, structure are simple, and performance stabilization can
It leans on, is not necessarily to periodic maintenance.
Detailed description of the invention
Illustrate the technical scheme in the embodiment of the utility model in order to clearer, it below will be to required in embodiment description
Attached drawing to be used is briefly described.
Fig. 1 is the schematic diagram of the section structure of self-operated type constant pressure oil supply device provided by the embodiment of the utility model；
Fig. 2 is the schematic diagram of the section structure of the pedestal of self-operated type constant pressure oil supply device provided by the embodiment of the utility model；
Fig. 3 is the top view of the pedestal of self-operated type constant pressure oil supply device provided by the embodiment of the utility model；
Fig. 4 is the piston top view cross section structural representation of self-operated type constant pressure oil supply device provided by the embodiment of the utility model
Figure；
Fig. 5 is the schematic diagram of the section structure of the piston of self-operated type constant pressure oil supply device provided by the embodiment of the utility model.
Appended drawing reference in figure respectively indicates:
1 pedestal；
11 oil inlets；
12 oil outlets；
13 second through-holes；
14 second threaded holes；
15 third threaded holes；
2 covers；
21 guide rod fixing ports；
22 oil return openings；
3 piston apparatus；
31 fixed guide poles；
32 piston center holes；
33 first piston portions；331 post heads；332 plunger portions；
34 second piston portions；
35 piston cylinders；351 first through hole；352 third through-holes；353 first threaded holes；
36 first springs；
37 second springs.
Specific embodiment
It is practical new to this below in conjunction with attached drawing to keep the purpose of this utility model, technical solution and advantage clearer
Type embodiment is described in further detail.
Self-operated type constant pressure oil supply device provided by the embodiment of the utility model, including pedestal, cover and piston apparatus.Pedestal
Inside it is provided with the oil supply gallery including oil inlet and oil outlet.Cover covers on pedestal, and oil return opening is provided on cover.Piston dress
It installs in cover, piston apparatus includes fixed guide pole, piston cylinder and piston, and wherein piston cylinder is supported on pedestal, living
The bottom of plug tube is connected to oil supply gallery, and the side wall of piston cylinder is connected to the return port, and fixed guide pole upper end and cover top connect
It connects, the lower end of fixed guide pole is located in piston cylinder, and piston can be sleeved on fixed guide pole up or down.
The piston of self-operated type constant pressure oil supply device provided by the embodiment of the utility model is in lubricating oil buoyancy and self gravity
Collective effect under move up and down, which is not controlled the fuel feeding of gas turbine by control system, only with the weight of piston and
Lubricating oil buoyancy is related.When gas turbine rotary speed is promoted, the lubricating oil into gas turbine becomes more, the pressure of the device oil outlet
Power will have downward trend, be reduced, be floated by the lubricants capacity that oil return opening flows back to fuel tank via multiple third through-holes on piston cylinder
Power decline, piston move down, and guarantee that gas turbine operates normally to provide the stable charge oil pressure of gas turbine.When gas turbine turns
When speed reduces, the lubricating oil into gas turbine is reduced, the pressure increase of oil supply gallery, on the pressure of the device oil outlet will have
The trend of liter increases into the lubricants capacity in piston cylinder, and buoyancy increases, and piston rises under the action of lubricating oil buoyancy, lubricates
Oil flows into piston cylinder from oil supply gallery via the first through hole of the bottom of the second through-hole and piston cylinder on pedestal, via piston cylinder
On multiple third through-holes increased by the lubricants capacity that oil return opening flows back to fuel tank, reduce the charge oil pressure of oil supply gallery, guarantee
Charge oil pressure before machine gas turbine is stablized.Lubricating oil is via the first through hole on the bottom of the second through-hole and piston cylinder on pedestal
Piston cylinder is flowed into, then fuel tank is flowed back to by natural gravity by the oil return opening on cover, oil return has both been avoided to make to enter combustion not in time
The lubricants capacity of gas-turbine is too big and oil occurs and floods phenomenon, in turn ensures the subsequent stable charge oil pressure of fuel tank, has eradicated ratio
Example regulating valve is unstable to production bring operational risk and hidden danger because of charge oil pressure.And the principle of device, structure are simple, property
Can be reliable and stable, it is not necessarily to periodic maintenance.
A kind of self-operated type constant pressure oil supply device is present embodiments provided, Fig. 1 is provided by the embodiment of the utility model relies on oneself
The schematic diagram of the section structure of formula constant pressure oil supply device；Fig. 2 is self-operated type constant pressure oil supply device provided by the embodiment of the utility model
Pedestal the schematic diagram of the section structure；Fig. 3 is the pedestal of self-operated type constant pressure oil supply device provided by the embodiment of the utility model
Top view；Fig. 4 is the piston top view cross section structural schematic diagram of self-operated type constant pressure oil supply device provided by the embodiment of the utility model；
Fig. 5 is the schematic diagram of the section structure of the piston of self-operated type constant pressure oil supply device provided by the embodiment of the utility model.
As shown in Figure 1, self-operated type constant pressure oil supply device includes pedestal 1, cover 2 and piston apparatus 3.
The oil supply gallery including oil inlet 11 and oil outlet 12 is provided in pedestal 1.The device makes with gas turbine cooperation
Used time, oil inlet 11 can be connected to lubricating oil system oil supply line, and oil outlet 12 can be with the inlet tube of gas turbine itself oil pump
Line connection.As shown in Figure 1-3, the sectional area of oil supply gallery oil inlet 11 and oil outlet 12 may be slightly larger than the centre of oil supply gallery
Partial pipeline section product, but the application is without being limited thereto, one or two in the oil inlet 11 and oil outlet 12 of oil supply gallery
A sectional area also can be equal to the pipeline section product of the middle section of oil supply gallery.
In the present embodiment, cover 2 covers on pedestal 1, and third threaded hole 15, pedestal 1 and cover 2 are provided on pedestal 1
Between be fixedly connected by third threaded hole 15, in other embodiments, can also be using other conjunctions between pedestal 1 and cover 2
The connection type of reason.As shown in fig. 1, oil return opening 22 is provided on cover 2, oil return opening 22 can pass through oil return pipeline and lubricating oil
Case is directly connected to or is placed directly in fuel tank.Flowing into the lubricating oil in piston cylinder 35 from oil supply gallery can be by piston cylinder 35
Side wall on multiple third through-holes 353 and cover 2 on oil return opening 22 by natural gravity return fuel tank.So oil return opening
22 will preferably larger design, and installation site is also preferably higher than the certain height of grease-box, oil return pipeline it is also preferred that take compared with
Heavy caliber can avoid oil return and device charge oil pressure caused to increase (non-constant) phenomenon not in time, in this way after in turn ensuring fuel tank
Continue stable charge oil pressure.In the present embodiment, such as needed for the charge oil pressure of upstream lubricating oil sledge is just equal to gas turbine
Charge oil pressure, via lubricating oil pipeline be that the charge oil pressure that provides of gas turbine is certain by the device from upstream lubricating oil sledge, just
There is no extra lubricating oil to enter in piston cylinder 35, also there is no need to extra lubricating oil to flow back to fuel tank, at this time second piston portion
34 contact with the bottom of piston cylinder 35, will not be connected between multiple third through-hole 352 and first through hole 351.
As shown in Figure 1, piston apparatus 3 is arranged in cover 2, piston apparatus 3 includes fixed guide pole 31, piston and piston
Cylinder 35.Such as piston cylinder 35 is supported on pedestal 1, piston is movably sleeved on fixed guide pole 31, guarantees that piston can
It is moved up and down in piston cylinder 35.In the present embodiment, the top of cover 2 may be provided with guide rod fixing port 21, fixed guide
The upper end of bar 31 can be directly anchored in guide rod fixing port 21, can also use other rational methods will in other embodiments
The upper end of fixed guide pole 31 is fixed on the top of cover 2.The lower end of fixed guide pole 31 is fixed on the bottom of piston cylinder 35, Gu
The lower end for determining guide rod 31 can be fixed to the bottom of piston cylinder 35 by any suitable fixed form.In the present embodiment,
The bottom of piston cylinder 35 is for example provided with the first threaded hole 353, and the lower end of fixed guide pole 31 can be fixed on piston cylinder 35
In first threaded hole 353 of bottom.Certain the application is not limited to that.
Fig. 1 shows the sectional structure chart of the self-operated type constant pressure oil supply device.It lives as shown in Figure 1, piston can be divided into first
Piston part 33 and second piston portion 34.First piston portion 33 and second piston portion 34 are provided with piston center hole 32, first piston
Portion 33 and second piston portion 34 are movably set on fixed guide pole 31.For example, in the present embodiment, piston center hole
32 diameter is slightly larger than the diameter of fixed guide pole 31.When lubricating oil flows into piston cylinder 35, piston and fixation can be made
Filled with oil film in gap between guide rod 31, piston moves freely when moving up and down.
As shown in Figure 1, first piston portion 33 can be divided into post head 331 and plunger portion 332.Such as post head 331 and plunger
Portion 332 can be the cylindrical body of different height and different-diameter with centre bore, and second piston portion 34 can also be band centre bore
Cylindrical body.In the present embodiment, the plunger portion 332 in first piston portion 33 and the diameter in second piston portion 34 can be slightly less than piston
The diameter of cylinder, and second piston portion 34 is located in piston cylinder 35.But the application is not limited in this way, by second piston portion
34 are arranged in piston cylinder 35, and are arranged to the cylindrical body that diameter is slightly less than the diameter of piston cylinder 35, are to work as extra profit
When the flow that lubricating oil flows into piston cylinder 35 changes, second piston portion 34 is facilitated to move up and down in piston cylinder 35.
Referring to Fig. 1-5, as shown in figure 4, the bottom of piston cylinder 35 may be provided with first through hole 351, the bottom of piston cylinder 35
First through hole can be one, or it is multiple.It may be provided with connection first through hole 351 and oil supply gallery on pedestal 1
Second through-hole 13.Such as the charge oil pressure needed for gas turbine it is smaller when, the lubricating oil in oil supply gallery can be by pedestal 1
The second through-hole 13 and the first through hole 351 of the bottom of piston cylinder 35 flow in piston cylinder 35.In the present embodiment, on pedestal 1
The latus rectum of the second through-hole 13 can choose the size equal with oil supply gallery internal diameter.Certainly the application is not limited to that,
In other embodiments, the latus rectum of the second through-hole 13 on pedestal 1 can also be chosen for being less than or greater than in oil supply gallery
The size of diameter.
Referring to Fig. 5, in the present embodiment, piston cylinder 35 be can be placed on pedestal 1, may be provided with the second screw thread on pedestal 1
Hole 14 can be fixedly connected between pedestal 1 and piston cylinder 35 by the second threaded hole 14, and certain the application is not limited to that,
In other embodiments, other reasonable connection types can also be used between pedestal 1 and piston cylinder 35.
Referring to Fig. 1, Fig. 4 and Fig. 5, it may be provided with multiple third through-holes 352 on the side wall of piston cylinder 35.Extra lubricating oil
It can be flowed into piston cylinder 35 by the second through-hole 13 of pedestal 1 and the first through hole 351 of piston cylinder 35, lubricating oil in piston cylinder 35
Amount increases, and piston rises under the action of lubricating oil buoyancy, and the lubricating oil in piston cylinder 35 can pass through the side wall of piston cylinder 35
On multiple third through-holes 353 flow in cover 2, then grease-box is flowed back to by the oil return opening 22 on cover 2.In the present embodiment
In, the sectional area summation of multiple third through-holes 353 on 35 side wall of piston cylinder is preferably 1.5 times of piston cross-section, due to
The sectional area of multiple third through-hole 353 is smaller, and has certain length, and during outflow of lubrication oil, sectional area is too small
Easily lead to the obstruction of lubricating oil in piston cylinder 35.
When the revolving speed of gas turbine changes, and charge oil pressure needed for gas turbine changes greatly, the device in order to
Be supplied to the stable charge oil pressure of gas turbine, via piston cylinder 35 by oil return opening 22 flow back to fuel tank lubricants capacity variation compared with
Greatly, the amplitude that the second piston portion 34 in the device moves up and down can be very big.In order to avoid the activity due to second piston portion 34
The excessive constant charge oil pressure influenced before gas turbine machine of amplitude, such as can be in the plunger portion 332 in first piston portion 33 and second
It is connected between piston portion 34 by the first spring 36 being set on fixed guide pole 31, which just plays certain
Quick response effect, can slow down first piston portion 33 because quality is larger, inertia greatly caused by slow movement and caused by pressure
Delay is adjusted, to provide more stable charge oil pressure for gas turbine.
In the present embodiment, the diameter of the post head 331 in first piston portion 33 can be greater than the diameter of piston cylinder 35.But this Shen
It please be not limited to that, in other embodiments, can also be changed by changing diameter, the thickness of post head 331
Become the weight in first piston portion 33, it can also be by increasing counterweight in post head 331, to play the work for changing piston overall weight
With suitable for providing different pressure stabilizing fuel feeding for the gas turbine of the different charge oil pressures of needs.
As shown in Figure 1, can be by being sleeved on fixed guide between 2 top of post head 331 and cover in first piston portion 33
Second spring 37 on bar 31 connects.In the present embodiment, such as when the device is in and does not work (static) state, the second bullet
Away from the distance between cover 2, the maximum that can cannot be less than piston normal work moves up and down distance, prevents maximum on spring 37 top
When workload, because second spring 37 suffers oppression, device voltage regulation result is influenced.Certainly the application is not limited to that, the second bullet
37 top of spring can be changed away from the distance between cover 2 according to actual demand.Meanwhile it being moved down in first piston portion 33
When dynamic, second spring 37 can slow down the impact force of the generation of first piston portion 33, avoid 2 top of first piston portion 33 and cover
It hits.
It, can be according to the section of charge oil pressure and piston needed for gas turbine for the gas turbine of different charge oil pressures
Product, to determine the weight of piston entirety.The weight of piston entirety refers to including first piston portion 33, second piston portion 34 and
The total weight of one spring 36, second spring 37.Such as the charge oil pressure according to formula gas turbine itself oil pump inlet line
Product with the sectional area of piston is the weight of piston entirety.Therefore, in the present invention, when gas turbine rotary speed raising, institute
The fuel delivery needed increases, and turbine oil inlet pressure will be lower, i.e., gas turbine itself oil pump inlet pressure reduces, together
When, the pressure of oil supply gallery also reduces, and the pressure of the device oil outlet 12 will have downward trend, and piston integrally moves down, lubricating oil
The lubricating oil amount for flowing into piston cylinder 35 from oil supply gallery is reduced.When gas turbine rotary speed declines, required fuel delivery is reduced, combustion gas wheel
Machine oil inlet pressure will be got higher, i.e., gas turbine itself oil pump inlet pressure increases, meanwhile, the pressure of oil supply gallery also rises
The pressure of height, the device oil outlet 12 will be on the rise, and piston integrally moves up, and lubricating oil flows through piston cylinder 35 from oil supply gallery
Lubricating oil amount increase.To guarantee that the pressure of the device oil outlet 12 is constant.
The working principle of self-operated type constant pressure oil supply device provided by the embodiment of the utility model are as follows:
Oil supply gallery oil inlet 11 on pedestal 1 connects upstream lubricating oil sledge fuel feeding, and lubricating oil sledge charge oil pressure is being protected in principle
While demonstrate,proving maximum fuel delivery, the pressure of the device oil inlet 11 is greater than or equal to the operating pressure of constant pressure oil supply device.The dress
It sets oil outlet 12 to connect by itself oil pump import of lubricant oil feeding pipe line and gas turbine, oil return opening 22 is connected or directly fallen
Enter fuel tank.When gas turbine rotary speed increases, required fuel delivery increases, and gas turbine oil inlet pressure will be lower, i.e. combustion gas
Turbine itself oil pump inlet pressure reduces, and the pressure of the device oil outlet 12 will have downward trend, and piston integrally moves down, lubrication
Oil flows through first through hole 351 from oil supply gallery and flows back to oil by oil return opening 22 via multiple third through-holes 352 on piston cylinder 35
The recirculating oil quantity of case is reduced.When gas turbine rotary speed declines, required fuel delivery is reduced, and gas turbine oil inlet pressure will become
Height, i.e. gas turbine itself oil pump inlet pressure increase, and the pressure of the device oil outlet 12 will be on the rise, and piston is whole
It moves up, lubricating oil flows through first through hole 351 from oil supply gallery and passes through oil return opening via multiple third through-holes 352 on piston cylinder 35
22 recirculating oil quantities for flowing back to fuel tank increase.To guarantee that the charge oil pressure of the device oil outlet 12 is constant.
When the revolving speed of gas turbine improves, and required lubricants capacity increases, gas turbine fuel pump imported oil pressure drop is low, should
The oil pressure of device oil outlet 12 is constant, and increasing along journey charge oil pressure gradient for gas turbine oil supply gallery is flowed by oil return opening 22
The lubricating oil of oil return box is less；When the revolving speed of gas turbine reduces, and required lubricants capacity is reduced, turbine oil pump inlet oil
Pressure increases, and the oil pressure of the device oil outlet 12 is constant, and gas turbine oil supply gallery reduces along journey charge oil pressure gradient, by returning
Hydraulic fluid port 22 flows back to the lubrication Chuck Steak of fuel tank.To provide metastable charge oil pressure for gas turbine.
The above is merely for convenience of it will be understood by those skilled in the art that the technical scheme in the embodiment of the utility model,
And limitation the utility model is not had to.It is all within the spirit and principles of the present invention, it is made it is any modification, equally replace
It changes, improve, should be included in the protection scope of the utility model.
Claims (10)
1. a kind of self-operated type constant pressure oil supply device, which is characterized in that including pedestal (1), cover (2) and piston apparatus (3),
In,
The oil supply gallery including oil inlet (11) and oil outlet (12) is provided in the pedestal (1)；
The cover (2) covers on the pedestal (1), is provided with oil return opening (22) on the cover (2)；
In the cover (2), the piston apparatus (3) includes fixed guide pole (31), piston for piston apparatus (3) setting
Cylinder (35) and piston, wherein the piston cylinder (35) is supported on the pedestal (1), the bottom of the piston cylinder (35) with it is described
Oil supply gallery connection, the side wall of the piston cylinder (35) is connected to the oil return opening (22), the fixed guide pole (31) it is upper
End is connect with the top of the cover (2), and the lower end of the fixed guide pole (31) is fixed on the bottom of the piston cylinder (35),
The piston can be sleeved on up or down on the fixed guide pole (31).
2. self-operated type constant pressure oil supply device according to claim 1, which is characterized in that the piston includes first piston portion
(33) and second piston portion (34) it, is provided between the first piston portion (33) and the second piston portion (34) and is set in institute
The first spring (36) on fixed guide pole (31) is stated, the second piston portion (34) is arranged in the piston cylinder (35).
3. self-operated type constant pressure oil supply device according to claim 2, which is characterized in that the first piston portion (33) includes
Connected post head (331) and plunger portion (332), the size of the plunger portion (332) are adapted to enter into the piston cylinder up and down
(35) in, the size of the post head (331) is suitable for that the post head (331) is prevented to enter in the piston cylinder (35).
4. self-operated type constant pressure oil supply device according to claim 3, which is characterized in that the post head (331) with it is described
The second spring (37) being set on fixed guide pole (31) is provided between cover (2).
5. self-operated type constant pressure oil supply device according to claim 4, which is characterized in that the bottom of the piston cylinder (35) is set
It is equipped with first through hole (351), the of the connection first through hole (351) and the oil supply gallery is provided on the pedestal (1)
Two through-holes (13).
6. self-operated type constant pressure oil supply device according to claim 5, which is characterized in that on the barrel of the piston cylinder (35)
Multiple third through-holes (352) are provided with, wherein when the bottom of the second piston portion (34) and the piston cylinder (35) contacts,
It is not connected between the multiple third through-hole (352) and the first through hole (351).
7. self-operated type constant pressure oil supply device according to claim 1, which is characterized in that the top of the cover (2) is arranged
Have guide rod fixing port (21), the top of the fixed guide pole (31) is arranged in the guide rod fixing port (21).
8. self-operated type constant pressure oil supply device according to claim 1, which is characterized in that the bottom of the piston cylinder (35) is set
It is equipped with the first threaded hole (353), the lower end of the fixed guide pole (31) is fixed in first threaded hole (353).
9. self-operated type constant pressure oil supply device according to claim 1, which is characterized in that the upside of the pedestal (1) is arranged
Have the second threaded hole (14), the piston cylinder (35) is fixed on the pedestal (1) by second threaded hole (14).
10. self-operated type constant pressure oil supply device according to claim 1, which is characterized in that the upside of the pedestal (1) is arranged
Have third threaded hole (15), the cover (2) is fixed on the pedestal (1) by the third threaded hole (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821388239.0U CN209067351U (en) | 2018-08-27 | 2018-08-27 | Self-operated type constant pressure oil supply device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821388239.0U CN209067351U (en) | 2018-08-27 | 2018-08-27 | Self-operated type constant pressure oil supply device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209067351U true CN209067351U (en) | 2019-07-05 |
Family
ID=67091191
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821388239.0U Active CN209067351U (en) | 2018-08-27 | 2018-08-27 | Self-operated type constant pressure oil supply device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209067351U (en) |
-
2018
- 2018-08-27 CN CN201821388239.0U patent/CN209067351U/en active Active
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