CN218377857U - Pressure boost trip valve and testing arrangement - Google Patents
Pressure boost trip valve and testing arrangement Download PDFInfo
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- CN218377857U CN218377857U CN202222180127.9U CN202222180127U CN218377857U CN 218377857 U CN218377857 U CN 218377857U CN 202222180127 U CN202222180127 U CN 202222180127U CN 218377857 U CN218377857 U CN 218377857U
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Abstract
The utility model discloses a pressure boost cut-off valve and a testing device, relating to the technical field of valves, wherein the pressure boost cut-off valve comprises a base, a lining, a sleeve, a plug, a valve rod and an elastic part; the bushing is of a tubular structure and is provided with a first through hole and a second through hole; a third through hole is formed in the sleeve; the valve is embedded in the bushing in a sealing manner along the axial direction, one end of the valve, which is opposite to the base, is a closed end, one end of the valve, which is opposite to the base, is provided with a counter bore, and the side wall of the valve is provided with a pressure relief hole communicated with the counter bore; one end of the valve rod extends into the countersunk hole of the valve, and the other end of the valve rod is axially and movably connected with the plug; the valve rod is of a hollow structure, and two axial ends of the valve rod are communicated; the elastic piece is arranged in the sleeve and surrounds the valve rod; the plug is axially communicated with the valve rod. The utility model discloses in discharging into hollow valve rod with unnecessary fuel through second through-hole and pressure release hole to finally discharge from the end cap, the pressure release is high-efficient, has improved the security.
Description
Technical Field
The utility model relates to the technical field of valves, specifically relate to a pressure boost trip valve and testing arrangement.
Background
The pressure-increasing cut-off valve is mounted on the engine fuel regulator, is a special hydraulic element applicable to kerosene medium, belonging to the field of actuating mechanism. Different oil paths are opened through the balance of pressure and spring force. However, the existing pressure-increasing stop valve has the following problems: the pressure boost trip valve lacks the pressure release structure, and when the engine stopped, the unable efficient of unnecessary fuel in the organism was discharged outside the organism, has the potential safety hazard.
SUMMERY OF THE UTILITY MODEL
The utility model aims at overcoming above-mentioned background art not enough, providing a pressure boost trip valve and testing arrangement, solve the unable high-efficient problem of discharging of unnecessary fuel.
On the first hand, the utility model provides a pressure boost trip valve, which comprises a base, a lining, a sleeve and a plug, wherein the base, the lining, the sleeve and the plug are coaxially arranged in sequence, and the inner cavities of the base, the lining, the sleeve and the plug are communicated in sequence; the valve, the valve rod and the elastic piece are coaxially arranged;
the bushing is of a tubular structure, a first through hole and a second through hole are formed in the bushing, and the first through hole and the second through hole are distributed at intervals along the axial direction;
a third through hole is formed in the sleeve;
the valve is embedded in the lining in a sealing mode along the axial direction, one end, facing the base, of the valve is a closed end, one end, facing away from the base, of the valve is provided with a counter bore, and the side wall of the valve is provided with a pressure relief hole communicated with the counter bore; the pressure relief hole is intermittently communicated with the second through hole;
the valve rod is coaxially and movably arranged in the sleeve, one end of the valve rod extends into the countersunk hole of the valve, and the other end of the valve rod is axially and movably connected with the plug; the valve rod is of a hollow structure, and two axial ends of the valve rod are communicated;
the elastic part is arranged in the sleeve and surrounds the valve rod, and the elastic deformation direction of the elastic part is along the axial moving direction of the valve rod and the valve;
the plug is axially communicated with the valve rod.
Furthermore, the outer wall of the valve rod is provided with a convex ring, the valve rod positioned at one end of the convex ring extends into the countersunk hole of the valve, and the valve rod positioned at the other end of the convex ring is sleeved with the elastic piece.
Further, the elastic member comprises a spring seat and a spring; the spring seat is sleeved on the valve rod, the spring seat tightly abuts against the plug, the spring is sleeved on the valve rod, one end of the spring abuts against the spring seat, and the other end of the spring abuts against the convex ring of the valve rod.
Further, a first adjusting gasket is arranged between the spring and the spring seat.
Further, a second adjusting gasket is arranged between the sleeve and the plug.
Further, the first through hole and the second through hole are respectively provided in plurality in the circumferential direction of the bush.
The oil-saving plug is characterized by further comprising a shell, a through mounting hole with a circular cross section is formed in the shell, the base, the lining and the sleeve are sequentially mounted in the mounting hole, one part of the plug is arranged in the mounting hole, the other part of the plug is positioned outside the shell, and an oil inlet nozzle, a residual oil drain hole, an oil outlet nozzle and an exhaust nozzle are arranged on the shell; the oil inlet pipe nozzle is communicated with the base, the residual oil drain outlet is communicated with the plug, the oil outlet pipe nozzle is communicated with the first through hole and the second through hole, and the exhaust pipe nozzle is communicated with the third through hole.
The sealing rings are arranged between the base and the valve, between the base and the shell, between the valve and the bushing, between the valve and the valve rod, between the valve rod and the plug, between the plug and the shell and between the bushing and the shell.
Further, the aperture of the second through hole is smaller than or equal to 1mm.
In a second aspect, the utility model provides a testing device, which comprises the pressure boost cut-off valve, a bottom plate, a mandril, a mounting seat and a stroke meter; the pressure boost trip valve with the mount pad sets up on the bottom plate, the trip gauge is installed on the mount pad, the trip gauge with be provided with between the pressure boost trip valve the ejector pin, the one end of ejector pin with the probe butt of trip gauge, the other end of ejector pin with the valve rod butt of pressure boost trip valve, ejector pin, probe and valve rod are coaxial.
Compared with the prior art, the utility model has the advantages as follows: through bushing, sleeve, valve and the valve rod of coaxial setting, realized the cartridge installation of pressure boost trip valve, practiced thrift installation space, and easy maintenance. Through set up the second through-hole on the bush, the piston motion of valve realizes the intermittent type nature intercommunication in second through-hole and pressure release hole, is convenient for discharge unnecessary fuel into hollow valve rod through second through-hole and pressure release hole in to finally discharge from the end cap, the pressure release is high-efficient, has improved the security.
Drawings
Fig. 1 is a schematic sectional structure diagram of the pressure-increasing cut-off valve of the present invention.
Fig. 2 is a perspective view of the bushing of fig. 1.
Fig. 3 is a schematic view of a half-cut perspective structure of the shutter of fig. 1.
Fig. 4 is a schematic perspective view of the testing device of the present invention.
Fig. 5 is a schematic cross-sectional structure of the test apparatus of fig. 4.
In the figure: 100-a pressure-increasing cut-off valve; 1/3/5/8/9/16/19-sealing ring; 2-a base; 4-a valve; 6/17-fluoroplastic rings; 7-a bushing; 10-a valve stem; 11-a spring; 12-a sleeve; 13-spring seats; 14-a first spacer; 15-a second spacer; 18-plug; 20-counter sink; 21-a first via; 22-a second via; 23-a third via; 24-a pressure relief vent; 25-a housing; 26-an oil inlet nozzle; 27-residual oil drain; 28-oil outlet nozzle; 29-exhaust nozzle; 30-a bottom plate; 31-a mandril; 32-a mounting seat; 33-journey Table.
Detailed Description
Reference will now be made in detail to the present embodiments of the invention, examples of which are illustrated in the accompanying drawings. While the invention will be described in conjunction with the specific embodiments, it will be understood that it is not intended to limit the invention to the described embodiments. On the contrary, it is intended to cover alternatives, modifications, and equivalents as may be included within the spirit and scope of the invention as defined by the appended claims. It should be noted that the method steps described herein may be implemented by any functional block or functional arrangement, and that any functional block or functional arrangement may be implemented as a physical entity or a logical entity, or a combination of both.
In order to better understand the present invention for those skilled in the art, the present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Note that: the following examples are merely one specific example, and are not intended to limit the embodiments of the present invention to the specific steps, values, conditions, data, sequences, etc. described below. Those skilled in the art can, upon reading this specification, utilize the inventive concepts to construct more embodiments than those specifically described herein.
The pressure-increasing cut-off valve shown in the figures 1-3 comprises a base, a lining, a sleeve and a plug which are coaxially arranged in sequence, and inner cavities of the base, the lining, the sleeve and the plug are communicated in sequence; the valve also comprises a valve, a valve rod and an elastic piece which are coaxially arranged.
As shown in fig. 2, the bushing is of a tubular structure, the bushing is provided with a first through hole and a second through hole, the first through hole and the second through hole are distributed at intervals along the axial direction, the outer wall of the bushing is provided with a ring groove, and the first through hole and the second through hole are both arranged in the ring groove, so that the first through hole and the second through hole are communicated. The first through holes and the second through holes are respectively provided with a plurality of holes along the circumferential direction of the lining, and in the embodiment, the number of the first through holes and the number of the second through holes are four. The first through hole is a main fuel oil circulation hole, and the aperture of the first through hole is larger than that of the second through hole. The aperture of the second through hole is less than or equal to 1mm, and in this embodiment, the aperture of the second through hole is preferably 0.8mm.
The sleeve is provided with a third through hole which is mainly used for exhausting so that the valve rod and the valve can smoothly move.
As shown in fig. 3, the valve is embedded in the bushing in an axial sealing manner, one end of the valve, which faces the base, is a closed end, one end of the valve, which faces away from the base, is provided with a counter bore, and the side wall of the valve is provided with a pressure relief hole communicated with the counter bore; the pressure relief hole is intermittently communicated with the second through hole. The intermittent communication is realized by the piston movement of the valve, and when the valve piston moves to a certain position, the second through hole is communicated with the pressure relief hole, namely the state shown in figure 1. And the fuel enters the pressure relief hole from the second through hole and then enters the countersunk hole. When the valve piston moves to another position, for example, the valve in fig. 1 moves to the right, the communication between the second through hole and the pressure relief hole is cut off, until the closed end of the valve does not obstruct the communication between the base and the first through hole on the bushing, the fuel entering from the base can smoothly pass through the first through hole, in the process, the second through hole and the pressure relief hole are still in an interruption state until the pressure of the fuel entering from the base is reduced, the valve resets to the left under the resetting action of the elastic part, the closed end of the valve cuts off the communication between the first through hole and the base, and the communication between the second through hole and the pressure relief hole is recovered.
The valve rod is coaxially and movably arranged in the sleeve, one end of the valve rod extends into the countersunk hole of the valve, and the other end of the valve rod is axially and movably connected with the plug; the valve rod is of a hollow structure, and two axial ends of the valve rod are communicated. Because the plug is axially communicated with the valve rod, fuel oil (also called redundant fuel oil or residual oil) entering the countersunk hole enters the valve rod, enters the plug from the other end of the valve rod and is discharged from the plug, and pressure relief is realized.
The elastic component is arranged in the sleeve and surrounded outside the valve rod, and the elastic deformation direction of the elastic component is along the axial moving direction of the valve rod and the valve.
The outer wall of the valve rod is provided with a convex ring, the valve rod positioned at one end of the convex ring extends into the countersunk hole of the valve, and the elastic part is sleeved on the valve rod positioned at the other end of the convex ring.
The elastic piece comprises a spring seat and a spring; the spring seat is sleeved on the valve rod, the spring seat tightly abuts against the plug, the spring is sleeved on the valve rod, one end of the spring abuts against the spring seat, and the other end of the spring abuts against the convex ring of the valve rod.
It should be noted that the deformation amount of the spring is smaller than the depth of the valve rod extending into the countersunk hole, so that one end of the valve rod is always in the countersunk hole.
A first adjusting gasket is arranged between the spring and the spring seat. Through the thickness of adjusting first adjusting shim, the compression length of adjustable spring to change the flow of the fuel that the valve piston motion in-process flows through first through-hole.
And a second adjusting gasket is arranged between the sleeve and the plug.
As shown in the accompanying drawings 4 and 5, the supercharging cutoff valve further comprises a shell, a through mounting hole with a circular cross section is formed in the shell, the base, the lining and the sleeve are sequentially mounted in the mounting hole, one part of the plug is arranged in the mounting hole, the other part of the plug is positioned outside the shell, and an oil inlet nozzle (Pzy), a residual oil drain hole, an oil outlet nozzle (PN) and an exhaust nozzle (Pb) are arranged on the shell; the oil inlet pipe nozzle is communicated with the base, the residual oil drain outlet is communicated with the plug, the oil outlet pipe nozzle is communicated with the first through hole and the second through hole, and the exhaust pipe nozzle is communicated with the third through hole.
The sealing ring sealing device is characterized by further comprising a plurality of sealing rings, wherein the sealing rings are arranged between the base and the valve, between the base and the shell, between the valve and the bushing, between the valve and the valve rod, between the valve rod and the plug, between the plug and the shell, and between the bushing and the shell. The valve also comprises a fluoroplastic ring, and fluoroplastic rings are respectively arranged between the valve and the bushing and between the valve rod and the plug.
Limited by weight requirements, the pressure boost cut-off valve is preferably made of aluminum alloy materials and is subjected to hard anodizing treatment, so that the pressure boost cut-off valve has the characteristics of light weight, small friction force and good wear resistance.
Based on the same inventive concept, as shown in fig. 4 and 5, the utility model also provides a testing device for measuring the opening pressure, the flow and the valve rod stroke of the pressure boost cut-off valve during the movement process of the valve piston. The testing device comprises a pressure-boosting cut-off valve, a bottom plate, a mandril, a mounting seat and a stroke meter; the pressure boost trip valve with the mount pad sets up on the bottom plate, the stroke table is installed on the mount pad, the stroke table with be provided with between the pressure boost trip valve the ejector pin, the one end of ejector pin with the probe butt of stroke table, the other end of ejector pin with the valve rod butt of pressure boost trip valve, ejector pin, probe and valve rod are coaxial.
As shown in fig. 5, in this state, the spring pushes the valve, the valve is at the leftmost end, and no oil flows out of the oil inlet nozzle, the residual oil drain outlet, the oil outlet nozzle and the exhaust nozzle. If the sealing performance is poor, whether the edge of the sealing ring is cut is checked, whether the roughness and the end face run-out degree of the valve of the pressure boost cut-off valve meet the drawing requirements is checked, and the sealing performance of the valve is checked.
The oil inlet pressure is slowly adjusted, and when the flow meter with the oil outlet pipe nozzle connected has a reading, the reading on the precision pressure transmitter communicated with the oil inlet pipe nozzle and the stroke of the stroke meter (namely the dial indicator) are recorded. To check opening pressure, flow, stroke test requirements.
In the description of the present invention, it should be noted that the terms "upper", "lower", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention. Unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are intended to be inclusive and mean, for example, that they may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
It is noted that, in the present invention, relational terms such as "first" and "second", and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrases "comprising a," "8230," "8230," or "comprising" does not exclude the presence of additional like elements in a process, method, article, or apparatus that comprises the element.
The above description is only exemplary of the invention, and is intended to enable those skilled in the art to understand and implement the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A pressure boost cut-off valve is characterized by comprising a base, a lining, a sleeve and a plug which are coaxially arranged in sequence, and inner cavities of the base, the lining, the sleeve and the plug are communicated in sequence; the valve, the valve rod and the elastic piece are coaxially arranged;
the bushing is of a tubular structure, a first through hole and a second through hole are formed in the bushing, and the first through hole and the second through hole are distributed at intervals along the axial direction;
a third through hole is formed in the sleeve;
the valve is embedded in the lining in a sealing mode along the axial direction, one end, facing the base, of the valve is a closed end, one end, facing away from the base, of the valve is provided with a counter bore, and the side wall of the valve is provided with a pressure relief hole communicated with the counter bore; the pressure relief hole is intermittently communicated with the second through hole;
the valve rod is coaxially and movably arranged in the sleeve, one end of the valve rod extends into the countersunk hole of the valve, and the other end of the valve rod is axially and movably connected with the plug; the valve rod is of a hollow structure, and two axial ends of the valve rod are communicated;
the elastic piece is arranged in the sleeve and is surrounded outside the valve rod, and the elastic deformation direction of the elastic piece is along the axial moving direction of the valve rod and the valve;
the plug is axially communicated with the valve rod.
2. The pressure-increasing stop valve as claimed in claim 1, wherein the outer wall of the valve rod is provided with a convex ring, the valve rod at one end of the convex ring extends into the countersunk hole of the valve, and the elastic member is sleeved on the valve rod at the other end of the convex ring.
3. A pressure intensifying shut-off valve as set forth in claim 2, wherein said elastic member includes a spring seat and a spring; the spring seat is sleeved on the valve rod, the spring seat tightly abuts against the plug, the spring is sleeved on the valve rod, one end of the spring abuts against the spring seat, and the other end of the spring abuts against the convex ring of the valve rod.
4. A pressurized shutoff valve according to claim 3 wherein a first adjuster shim is disposed between said spring and said spring seat.
5. A pressurized shutoff valve according to claim 1 wherein a second spacer is disposed between said sleeve and said plug.
6. The pressure-increasing cutoff valve according to claim 1, wherein the first through hole and the second through hole are provided in plurality in the circumferential direction of the bushing, respectively.
7. The booster cutoff valve according to claim 1, further comprising a housing, wherein a through mounting hole with a circular cross section is provided in the housing, the base, the bushing and the sleeve are sequentially mounted in the mounting hole, one part of the plug is disposed in the mounting hole, the other part is located outside the housing, and the housing is provided with an oil inlet nozzle, a residual oil drain hole, an oil outlet nozzle and an exhaust nozzle; the oil inlet pipe nozzle is communicated with the base, the residual oil drain outlet is communicated with the plug, the oil outlet pipe nozzle is communicated with the first through hole and the second through hole, and the exhaust pipe nozzle is communicated with the third through hole.
8. The pressure-increasing stop valve as claimed in claim 7, further comprising a plurality of sealing rings, wherein the sealing rings are arranged between the base and the valve, between the base and the casing, between the valve and the bushing, between the valve and the valve rod, between the valve rod and the plug, between the plug and the casing, and between the bushing and the casing.
9. The pressure-increasing cutoff valve as set forth in claim 1, wherein the second through hole has a hole diameter of 1mm or less.
10. A testing device, comprising a pressure-increasing shut-off valve according to any one of claims 1 to 9, further comprising a base plate, a ram, a mounting seat and a stroke gauge; the pressure boost trip valve with the mount pad sets up on the bottom plate, the trip gauge is installed on the mount pad, the trip gauge with be provided with between the pressure boost trip valve the ejector pin, the one end of ejector pin with the probe butt of trip gauge, the other end of ejector pin with the valve rod butt of pressure boost trip valve, ejector pin, probe and valve rod are coaxial.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222180127.9U CN218377857U (en) | 2022-08-18 | 2022-08-18 | Pressure boost trip valve and testing arrangement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222180127.9U CN218377857U (en) | 2022-08-18 | 2022-08-18 | Pressure boost trip valve and testing arrangement |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218377857U true CN218377857U (en) | 2023-01-24 |
Family
ID=84967669
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222180127.9U Active CN218377857U (en) | 2022-08-18 | 2022-08-18 | Pressure boost trip valve and testing arrangement |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218377857U (en) |
-
2022
- 2022-08-18 CN CN202222180127.9U patent/CN218377857U/en active Active
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