CN108443245B

CN108443245B - Pressure-stabilizing and pressure-reducing sleeve and pressure-stabilizing and pressure-reducing structure

Info

Publication number: CN108443245B
Application number: CN201810450565.8A
Authority: CN
Inventors: 游志伟; 董红涛; 李超; 薛成
Original assignee: Hunan Aviation Powerplant Research Institute AECC
Current assignee: Hunan Aviation Powerplant Research Institute AECC
Priority date: 2018-05-11
Filing date: 2018-05-11
Publication date: 2021-03-02
Anticipated expiration: 2038-05-11
Also published as: CN108443245A

Abstract

The invention relates to the technical field of hydraulic pressure, and provides a pressure-stabilizing and pressure-reducing sleeve which is arranged in a hydraulic channel and comprises a sleeve body, wherein the sleeve body is provided with a first end and a second end which are arranged oppositely, the first end is opened and can be communicated with a liquid inlet, and the second end is closed; the sleeve body has interior section of thick bamboo face, urceolus face and sleeve inner chamber, and the urceolus face can form with hydraulic pressure pipeline and hold the chamber, holds the chamber and can communicate with the liquid outlet, is provided with a plurality of through-holes on the lateral wall of sleeve body, each through-hole intercommunication sleeve inner chamber with hold the chamber. The pressure stabilizing and reducing sleeve is used for stabilizing and reducing the hydraulic pressure correspondingly.

Description

Pressure-stabilizing and pressure-reducing sleeve and pressure-stabilizing and pressure-reducing structure

Technical Field

The invention relates to the technical field of hydraulic pressure, in particular to a pressure stabilizing and reducing sleeve and a pressure stabilizing and reducing structure provided with the same.

Background

Most of the lubricating oil pumps and fuel pumps are of gear pump type structures, the oil pressure of oil outlets of the lubricating oil pumps and the fuel pumps has certain fluctuation, and nozzles, lubricating devices and the like of various precise parts have higher requirements on the oil pressure.

At present, various pressure stabilizing and reducing schemes are available, and various electromagnetic valves, pressure reducing valves, flow limiting valves and the like can accurately control the pressure and stability of an oil outlet; however, the valves are adopted, so that the whole system is complex in structure, high in cost, low in reliability, poor in maintainability and the like; moreover, in some fields, the stability requirement on the oil pressure is higher than that of the oil directly discharged from the gear pump, but very accurate control is not needed, namely, only better stability is needed, so that the valves are not needed.

The above information disclosed in this background section is only for enhancement of understanding of the background of the invention and therefore it may contain information that does not constitute prior art that is already known to a person of ordinary skill in the art.

Disclosure of Invention

The invention aims to overcome the defect of low stability of the prior art and provide a pressure stabilizing and reducing sleeve with high stability and a pressure stabilizing and reducing structure provided with the pressure stabilizing and reducing sleeve.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

According to one aspect of the present disclosure, there is provided a pressure stabilizing and relief sleeve for installation within a hydraulic passage, the pressure stabilizing and relief sleeve comprising:

the sleeve body is provided with a first end and a second end which are oppositely arranged, the first end is opened and can be communicated with the liquid inlet, and the second end is closed; the sleeve body has interior section of thick bamboo face, urceolus face and sleeve inner chamber, outer section of thick bamboo face can form with hydraulic pressure pipeline and hold the chamber, it can communicate with the liquid outlet to hold the chamber, be provided with a plurality of through-holes on the lateral wall of sleeve body, each the through-hole intercommunication sleeve inner chamber with hold the chamber.

In an exemplary embodiment of the present disclosure, the surge and relief sleeve further includes:

the first sealing ring is arranged at one end of the outer cylinder surface, which is close to the liquid inlet.

and the second sealing ring is arranged at one end of the outer cylinder surface, which is close to the liquid outlet.

In an exemplary embodiment of the disclosure, the end surface of the first end and/or the end surface of the second end is provided with a removal threaded hole, and a depth direction of the removal threaded hole is consistent with an extending direction of the sleeve body.

According to an aspect of the present disclosure, there is provided a pressure stabilizing and reducing structure for a hydraulic passage, the pressure stabilizing and reducing structure including:

the pressure stabilizing and reducing sleeve of any one of the above items;

and the fixing component is used for fixing the pressure stabilizing and reducing sleeve in the hydraulic channel.

In an exemplary embodiment of this disclosure, the hydraulic passage includes inlet channel and liquid outlet channel, be connected with the installation passageway between inlet channel and the liquid outlet channel, steady voltage decompression sleeve installs in the installation passageway, be provided with a radial boss in the installation passageway, steady voltage decompression sleeve supports and leans on the boss.

In an exemplary embodiment of the present disclosure, the mounting channel communicates to an outer sidewall of the hydraulic device, and the fixing assembly includes:

and the side wall of the gland is in interference fit with the mounting channel, one end of the gland is abutted against the pressure stabilizing and reducing sleeve, and the other end of the gland protrudes out of the hydraulic device.

In an exemplary embodiment of the present disclosure, a flange is disposed at one end of the gland protruding out of the hydraulic device, a via hole is disposed on the flange, a threaded hole matched with the via hole is disposed on the hydraulic device, and the fixing assembly further includes:

and the fixing screw penetrates through the through hole and is in threaded fit with the threaded hole.

In an exemplary embodiment of the present disclosure, the pressure stabilizing and reducing structure further includes:

and the third sealing ring is arranged on the side surface of the gland, which is matched with the mounting channel.

In an exemplary embodiment of the present disclosure, the pressure-stabilizing and pressure-reducing sleeve is provided with a fitting protrusion ring on an outer cylindrical surface thereof, and the fixing assembly includes:

the first protruding ring is arranged on the inner side wall of the hydraulic channel;

and the second protruding ring is arranged on the inner side wall of the hydraulic channel and is arranged at an interval with the first protruding ring, and the matching protruding ring is matched between the first protruding ring and the second protruding ring.

According to the technical scheme, the invention has at least one of the following advantages and positive effects:

according to the pressure-stabilizing and pressure-reducing sleeve, the first end of the sleeve body is open and can be communicated with the liquid inlet, and the second end of the sleeve body is closed, so that pressure liquid cannot flow out from the second end; outer cylinder face can form with hydraulic pressure pipeline and hold the chamber, holds the chamber and can communicate with the liquid outlet, is provided with a plurality of through-holes on the lateral wall of sleeve body, each through-hole intercommunication sleeve inner chamber with hold the chamber. On the one hand, pressure liquid gets into the sleeve inner chamber from first end, then gets into through a plurality of through-holes and holds the chamber, flows to the liquid outlet from holding the chamber at last, and pressure liquid is through steady voltage decompression telescopic reposition of redundant personnel, join and change the flow direction, makes hydraulic pressure obtain corresponding stability and reduce. On the other hand, the pressure-stabilizing and pressure-reducing sleeve is of a pure mechanical structure, and is simple in structure, high in reliability and easy to maintain.

Drawings

The above and other features and advantages of the present invention will become more apparent by describing in detail exemplary embodiments thereof with reference to the attached drawings.

FIG. 1 is a schematic structural view of an embodiment of a pressure stabilizing and reducing sleeve according to the present invention;

fig. 2 is a schematic structural view of an embodiment of the pressure stabilizing and reducing structure according to the present invention.

The reference numerals of the main elements in the figures are explained as follows:

1. a liquid inlet channel; 2. a liquid outlet channel;

3. a sleeve body; 31. a first end; 32. a second end; 33. a first annular projection; 34. a second annular protrusion; 35. a through hole; 36. an accommodating chamber; 37. an inner cavity of the sleeve;

41. a first seal ring; 42. a second seal ring;

5. a third seal ring; 6. disassembling the threaded hole; 7. installing a channel; 8. a gland; 9. and fixing the screw.

Detailed Description

Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and thus their detailed description will be omitted.

The invention firstly provides a pressure-stabilizing and pressure-reducing sleeve, which is shown in a structural schematic diagram of an embodiment of the pressure-stabilizing and pressure-reducing sleeve in figure 1; the pressure stabilizing and reducing sleeve is arranged in the hydraulic channel and can comprise a sleeve body 3, the sleeve body 3 is provided with a first end 31 and a second end 32 which are oppositely arranged, the first end 31 is open and can be communicated with the liquid inlet, and the second end 32 is closed; sleeve body 3 has interior tube face, urceolus face and sleeve inner chamber 37, and the urceolus face can form with hydraulic pressure pipeline and hold chamber 36, holds chamber 36 and can communicate with the liquid outlet, is provided with a plurality of through-holes 35 on sleeve body 3's the lateral wall, and each through-hole 35 communicates sleeve inner chamber 37 and holds chamber 36.

In the present exemplary embodiment, the sleeve body 3 may be provided in a cylindrical shape with a first end 31 open and a second end 32 closed, and the interior thereof forms a sleeve inner chamber 37. The first end 31 of the sleeve body 3 is open and can be communicated with the liquid inlet, so that pressure liquid can enter the accommodating cavity 36 from the liquid inlet, and the second end 32 of the sleeve body 3 is closed, so that the pressure liquid cannot directly flow out from the second end 32. Of course, the sleeve body 3 may be not cylindrical but square, and generally only the shape of the sleeve body 3 is matched with the hydraulic passage.

The sleeve inner cavity 37 can be cylindrical, and the inner cylindrical surface of the sleeve body 3 can be a smooth cylindrical surface, so that resistance to pressure liquid can be avoided.

The outer cylindrical surface of the first end 31 of the sleeve body 3 can be provided with a first annular protrusion 33 protruding in the radial direction, the outer cylindrical surface of the second end 32 of the sleeve body 3 can also be provided with a second annular protrusion 34 protruding in the radial direction, namely, the outer diameter of the middle part of the sleeve body 3 is smaller than the outer diameters of the two ends, the first end 31 and the second end 32 of the sleeve body 3 are both matched with the hydraulic channel, the hydraulic channel can be set to be a straight cylindrical shape, and the middle part of the sleeve body 3 and the hydraulic channel form an accommodating cavity 36. In the present exemplary embodiment, the outer diameter of the first annular protrusion 33 is smaller than the outer diameter of the second annular protrusion 34, but the outer diameter of the first annular protrusion 33 may be larger than or equal to the outer diameter of the second annular protrusion 34, and is not particularly limited herein. An inwardly recessed annular recess may also be provided in the hydraulic passage, which further enlarges the space in which the central portion of the sleeve body 3 and the hydraulic passage form the receiving chamber 36.

In addition, it will be understood by those skilled in the art that the receiving chamber 36 may be formed with the hydraulic passage only by the first and second

annular protrusions

33 and 34, or the receiving chamber 36 may be formed with the outer cylindrical surface of the sleeve body 3 only by the annular recess. The accommodating cavity 36 is not necessarily disposed at the middle position of the sleeve body 3, and may be disposed at a position close to the first end 31 or the second end 32 of the sleeve body 3, or may be configured such that the first end 31 or the second end 32 is a starting end of the accommodating cavity 36 and extends toward the middle of the sleeve body 3.

In the present exemplary embodiment, a plurality of through holes 35 are provided radially in the middle portion of the sleeve body 3, and the through holes 35 penetrate the outer cylindrical surface and the inner cylindrical surface so that the through holes 35 communicate the accommodation chamber 36 and the sleeve inner chamber 37. The pressure liquid flowing into the sleeve inner chamber 37 flows to the receiving chamber 36 through the through hole 35, so that the pressure liquid flowing in the axial direction is changed to flow in the radial direction. The plurality of through holes 35 divide the pressure fluid, and the pressure fluid flows into the accommodating chamber 36 and then joins. The process of changing the direction of the pressure liquid, dividing and converging is realized, and the pressure of the pressure liquid is stabilized and reduced.

Of course, in other exemplary embodiments of the present invention, the plurality of through holes 35 may be disposed obliquely as long as the accommodating chamber 36 and the sleeve inner chamber 37 can communicate with each other. The larger the diameter of the through hole 35 is, the smaller the pressure of the pressure liquid is, and conversely, the smaller the diameter of the through hole 35 is, the larger the pressure of the pressure liquid is. The pressure of the pressure liquid will be smaller the larger the number of the through holes 35, whereas the pressure of the pressure liquid will be larger the smaller the number of the through holes 35. The diameter and number of the through holes 35 may be set as desired.

In the present exemplary embodiment, a first sealing ring 41 may be provided at an end of the outer cylindrical surface near the inlet, and the accommodating chamber 36 may be isolated from the inlet passage 1 by the first sealing ring 41.

In the present exemplary embodiment, a second sealing ring 42 may be disposed at an end of the outer cylindrical surface close to the liquid outlet, the second sealing ring 42 may isolate the accommodating cavity 36 from the structure of the second end 32 of the sleeve body 3, and the sealing performance of the accommodating cavity 36 may be increased by the second sealing ring 42.

In addition, in the case where the accommodating chamber 36 is provided such that the first end 31 or the second end 32 of the sleeve body 3 is the starting end of the accommodating chamber 36 and extends toward the middle of the sleeve body 3, an end face sealing method may be adopted, that is, the first sealing ring 41 may be provided on the end face of the first end 31 of the sleeve body 3, and the second sealing ring 42 may be provided on the end face of the second end 32 of the sleeve body 3.

In the present exemplary embodiment, a removal screw hole 6 may be provided at an end surface of the second end 32, and a depth direction of the removal screw hole 6 coincides with an extending direction of the sleeve body 3. The sleeve body 3 is generally installed in the hydraulic passage along the hydraulic passage, and the sleeve body 3 needs to be replaced after being damaged, and needs to be disassembled during replacement, the threaded hole 6 is disassembled by setting, so that the sleeve body can be conveniently disassembled, a screw is screwed into the threaded hole during disassembly, and then the whole sleeve body 3 can be pulled out by pulling the screw. Of course, the dismounting threaded hole 6 may also be disposed on the end surface of the first end 31, or the dismounting threaded holes 6 may also be disposed on both the end surface of the first end 31 and the end surface of the second end 32, so as to facilitate dismounting of the pressure stabilizing and reducing sleeve under various installation conditions.

In the present exemplary embodiment, the second end 32 of the sleeve body 3 is closed, and a plugging head may be used for plugging, that is, the second end 32 may be processed to form an internal thread, then an external thread matching the internal thread is processed on the plugging head, and the plugging head is screwed to the second end 32 of the sleeve body 3 to form a closed state. Of course, the closure can also be performed by means of a gland 8 as shown in fig. 2. In addition, the second end 32 of the sleeve body 3 may be closed, or may be formed by integral molding, that is, when the sleeve body 3 is machined by using a solid material, the closed end is directly formed on the second end 32 without machining.

Further, the invention also provides a pressure stabilizing and reducing structure, and refer to a schematic structural diagram of an embodiment of the pressure stabilizing and reducing structure shown in fig. 2; the pressure stabilizing and reducing structure can be used for a hydraulic channel, the pressure stabilizing and reducing structure can comprise a pressure stabilizing and reducing sleeve, a fixing component and the like, and the fixing component can be used for fixing the pressure stabilizing and reducing sleeve in the hydraulic channel.

The detailed structure of the pressure-stabilizing and pressure-reducing sleeve is described in detail above and will not be described in detail here.

In the present exemplary embodiment, the hydraulic passage may include the inlet passage 1, the outlet passage 2, and the installation passage 7 connected between the inlet passage 1 and the outlet passage 2, and the like. The liquid inlet channel 1 and the liquid outlet channel 2 can be arranged in the same direction, but the liquid inlet channel 1 and the liquid outlet channel 2 are staggered. The installation channel 7 can be arranged basically vertical to the liquid inlet channel 1 and the liquid outlet channel 2, and the pressure-stabilizing pressure-reducing sleeve is installed in the installation channel 7. The inner diameter of one end of the mounting channel 7 close to the liquid inlet channel 1 is smaller than that of one end close to the liquid outlet channel 2, so that a step surface is formed in the mounting channel 7, and the pressure stabilizing and reducing sleeve abuts against the step surface.

The installation channel 7 can communicate to hydraulic means's lateral wall, and fixed subassembly can include gland 8, and gland 8's lateral wall can interference fit with installation channel 7, and gland 8's one end supports with steady voltage decompression sleeve and leans on, and steady voltage decompression sleeve is fixed between above-mentioned step face and gland 8 to gland 8 through interference fit is fixed with steady voltage decompression sleeve. Can set up the screw hole on gland 8, when dismantling gland 8, twist the screw into the screw hole, pull the screw and can pull out gland 8.

Of course, the lateral wall of gland 8 and installation 7 can not be interference fit, can also be provided with the flange in gland 8's outstanding hydraulic means's one end, be provided with the via hole on the flange, the last screw hole that is provided with via hole complex of hydraulic means, fixed subassembly can also include set screw 9, set screw 9 runs through hole and screw-thread fit in screw hole to fix gland 8 on hydraulic means, further fixed gland 8 and steady voltage decompression sleeve.

In addition, as will be understood by those skilled in the art, in the case that the pressure-stabilizing and pressure-reducing sleeve is vertically installed, the pressing cover 8 may not be provided, and a boss capable of bearing the pressure-stabilizing and pressure-reducing sleeve may be provided in the vertical installation passage 7.

In the present exemplary embodiment, a third sealing ring 5 may also be provided on the side of the gland 8 that mates with the mounting channel 7. The tightness of the receiving space 36 can be further increased by the third sealing ring 5.

The structure of the fixing member is not limited to the above description, for example, a fitting protrusion ring may be provided on the outer cylindrical surface of the pressure stabilizing and reducing sleeve, the fitting protrusion ring radially protrudes from the outer cylindrical surface of the pressure stabilizing and reducing sleeve, the fixing member may include a first protrusion ring and a second protrusion ring, etc., the first protrusion ring may be provided on the inner side wall of the hydraulic passage; the second protruding ring can also be arranged on the inner side wall of the hydraulic channel and is arranged at intervals with the first protruding ring, the second protruding ring and the first protruding ring are arranged in parallel, and the matching protruding ring is clamped between the first protruding ring and the second protruding ring, so that the pressure stabilizing and reducing sleeve is fixed in the installation channel 7.

According to the pressure-stabilizing and pressure-reducing sleeve, the first end 31 of the sleeve body 3 is open and can be communicated with the liquid inlet, and the second end 32 is closed, so that pressure liquid cannot flow out from the second end 32; outer cylinder face can form with hydraulic pressure pipeline and hold chamber 36, holds chamber 36 and can communicate with the liquid outlet, is provided with a plurality of through-holes 35 on the lateral wall of sleeve body 3, and each through-hole 35 communicates sleeve inner chamber 37 and holds chamber 36. On one hand, pressure liquid enters the sleeve inner cavity 37 from the first end 31, then enters the accommodating cavity 36 through the plurality of through holes 35, and finally flows from the accommodating cavity 36 to the liquid outlet, and the pressure liquid is divided, converged and changed in flow direction through the pressure stabilizing and reducing sleeve, so that the hydraulic pressure is correspondingly stabilized and reduced. On the other hand, the pressure-stabilizing and pressure-reducing sleeve is of a pure mechanical structure, and is simple in structure, high in reliability and easy to maintain.

The described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments, and the features discussed in connection with the embodiments are interchangeable, if possible. In the above description, numerous specific details are provided to give a thorough understanding of embodiments of the invention. One skilled in the relevant art will recognize, however, that the invention may be practiced without one or more of the specific details, or with other methods, components, materials, and so forth. In other instances, well-known structures, materials, or operations are not shown or described in detail to avoid obscuring aspects of the invention.

Although relative terms, such as "upper" and "lower," may be used in this specification to describe one element of an icon relative to another, these terms are used in this specification for convenience only, e.g., in accordance with the orientation of the examples described in the figures. It will be appreciated that if the device of the icon were turned upside down, the element described as "upper" would become the element "lower". When a structure is "on" another structure, it may mean that the structure is integrally formed with the other structure, or that the structure is "directly" disposed on the other structure, or that the structure is "indirectly" disposed on the other structure via another structure.

In this specification, the terms "a", "an", "the" and "the" are used to indicate the presence of one or more elements/components/parts/etc.; the terms "comprising," "including," and "having" are intended to be inclusive and mean that there may be additional elements/components/etc. other than the listed elements/components/etc.; the terms "first," "second," and "third," etc. are used merely as labels, and are not limiting on the number of their objects.

It is to be understood that the invention is not limited in its application to the details of construction and the arrangement of components set forth in the description. The invention is capable of other embodiments and of being practiced and carried out in various ways. The foregoing variations and modifications fall within the scope of the present invention. It will be understood that the invention disclosed and defined in this specification extends to all alternative combinations of two or more of the individual features mentioned or evident from the text and/or drawings. All of these different combinations constitute alternative aspects of the present invention. The embodiments described in this specification illustrate the best mode known for carrying out the invention and will enable those skilled in the art to utilize the invention.

Claims

1. A pressure stabilizing and reducing sleeve for installation within a hydraulic passage, said pressure stabilizing and reducing sleeve comprising:

the sleeve body is provided with a first end and a second end which are oppositely arranged, the first end is opened and can be communicated with the liquid inlet, and the second end is closed; the sleeve body is provided with an inner cylinder surface, an outer cylinder surface and a sleeve inner cavity, the outer cylinder surface can form an accommodating cavity with the hydraulic channel, the accommodating cavity can be communicated with the liquid outlet, the side wall of the sleeve body is provided with a plurality of through holes, and each through hole is communicated with the sleeve inner cavity and the accommodating cavity; the through hole is vertically arranged with the opening of the first end; the end face of the first end and/or the end face of the second end are/is provided with a dismounting threaded hole, and the depth direction of the dismounting threaded hole is consistent with the extension direction of the sleeve body;

the first sealing ring is arranged at one end of the outer cylinder surface, which is close to the liquid inlet;

the second sealing ring is arranged at one end of the outer cylinder surface, which is close to the liquid outlet;

wherein, hydraulic passage includes inlet channel and liquid outlet channel, inlet channel and liquid outlet channel set up perpendicularly, be connected with the installation passageway between inlet channel and the liquid outlet channel, steady voltage decompression sleeve installs in the installation passageway, be provided with a radial boss in the installation passageway, steady voltage decompression sleeve supports and leans on the boss.

2. A pressure stabilizing and reducing structure for a hydraulic passage, comprising:

the pressure stabilizing and relief sleeve of claim 1;

3. The pressure stabilizing and reducing structure according to claim 2, wherein the mounting passage communicates to an outer side wall of the hydraulic device, and the fixing assembly includes:

4. The pressure stabilizing and reducing structure according to claim 3, wherein a flange is provided at an end of the gland protruding out of the hydraulic device, a through hole is provided on the flange, a threaded hole matched with the through hole is provided on the hydraulic device, and the fixing assembly further comprises:

5. The pressure stabilizing and pressure reducing structure according to claim 3, further comprising:

6. The structure according to claim 2, wherein the pressure stabilizing and reducing sleeve has an outer cylindrical surface provided with a fitting protrusion ring, and the fixing member comprises: