CN106764149B - A kind of pipeline is from seal structure and with its aircraft - Google Patents
A kind of pipeline is from seal structure and with its aircraft Download PDFInfo
- Publication number
- CN106764149B CN106764149B CN201710048918.7A CN201710048918A CN106764149B CN 106764149 B CN106764149 B CN 106764149B CN 201710048918 A CN201710048918 A CN 201710048918A CN 106764149 B CN106764149 B CN 106764149B
- Authority
- CN
- China
- Prior art keywords
- pipeline
- valve
- spring
- seal
- seal structure
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L21/00—Joints with sleeve or socket
- F16L21/02—Joints with sleeve or socket with elastic sealing rings between pipe and sleeve or between pipe and socket, e.g. with rolling or other prefabricated profiled rings
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Gasket Seals (AREA)
- Quick-Acting Or Multi-Walled Pipe Joints (AREA)
Abstract
The invention discloses a kind of pipelines from seal structure and with its aircraft, is related to engine maintenance technical field.The pipeline includes from seal structure: casing, and described sleeve pipe is internally provided with ring packing boss, and the both ends of casing are used for connecting line;Valve, the valve are annulus structure, are provided with through-hole on the side wall of the annulus, the through-hole is connected to an end face of the valve, the end face is defined as seal face, and the valve is mounted on the inside of described sleeve pipe, is slidably matched with the inner wall of casing;Spring, the spring are mounted on the inside of described sleeve pipe, and one end is fixed, and the other end is contacted with the valve;The spring provides thrust by compression elasticity for the valve, and the side of the seal face and the ring packing boss cooperatively forms sealing.The present invention has the advantages that can avoid oil contamination when the connecting line safeguarded to needs is assembled and disassembled, leaking, keeps ground crew's operation convenient, improve engine maintenance.
Description
Technical field
The present invention relates to engine maintenance technical fields, and in particular to a kind of pipeline is from seal structure and with its aircraft.
Background technique
In recent years, succeeding in developing with multiple new products, some models step by step input use, and designer also gradually recognizes
Know craftsmanship, the importance of the maintainability of product and integrated supportability of aero-engine reliability, manufacture assembly.According to mesh
Feature is safeguarded in the installation of front engine and aircraft, in the pipeline structure assembling and dissembling process between engine and aircraft, due to pipeline
Interface is not easy to block in time, and fuel oil, lubricating oil etc. often splash to airplane hatch cover or airport ground, can even make ground service people dirty sometimes
Member's clothes, Operation and Maintenance is inconvenient, increases the workload of maintenance personnel.
Summary of the invention
The object of the present invention is to provide a kind of pipelines from seal structure and with its aircraft, is improving engine maintenance
Meanwhile enable ground crew's operation readiness, reduce oil leak, with solve or at least mitigate background technique in the presence of extremely
The problem of at few one.
The technical solution adopted by the present invention is that: a kind of pipeline is provided from seal structure, includes:
Casing, described sleeve pipe are internally provided with ring packing boss, and the both ends of casing are used for connecting line;
Valve, the valve are annulus structure, are provided with through-hole on the side wall of the annulus, the through-hole with
One end face of the valve is connected to, and the end face is defined as seal face, and the valve is mounted on the inside of described sleeve pipe, with set
The inner wall of pipe is slidably matched;
Spring, the spring are mounted on the inside of described sleeve pipe, and one end is fixed, and the other end is contacted with the valve;
The spring provides thrust, the seal face and the ring packing boss by compression elasticity for the valve
Side cooperatively form sealing.
Preferably, the valve is stepped sleeve, and outer circle includes the cylindrical section of 2 sections of different-diameters, and wherein outer diameter is larger
Cylindrical section and the inner hole of described sleeve pipe be slidably matched, the side wall of the lesser cylindrical section of outer diameter is evenly distributed in 3 through-holes, described
Through-hole extends to the seal face along the axis direction of valve in the lateral wall compared with roundlet shell of column.
Preferably, it is provided with seal groove on the seal face, the first sealing ring is installed in the seal groove, described
One sealing ring is bonded in the seal groove on the valve using adhesive by sulfurization.
Preferably, the inner hole of the valve is provided with first step structure, and the end face of the spring withstands on the First
On the step surface of stage structure, the cylindrical surface of the outer circle of the spring and the first step structure cooperates.
Preferably, the pipeline also includes spring base from seal structure, and the spring base is tube-in-tube structure, the spring base
The inner hole of outer circle and described sleeve pipe, the inner hole of the spring base are provided with second step structure, the other end of the spring
It withstands on the step surface of the second step structure, the cylindrical surface of the outer circle of the spring and the second step structure cooperates.
Preferably, the inner hole of described sleeve pipe is provided with annular slot;The pipeline also includes hole elasticity gear from seal structure
Circle, the circlip for hole is mounted in the annular slot, for spring base described in the axially position in described sleeve pipe.
Preferably, the spring base is provided with stop ledge, and the side of the spring base is arranged in the stop ledge, only
Dynamic boss is less than the opening width of the circlip for hole in the width of spring base circumferencial direction, and the opening width is finger-hole
With the opening of circlip circumferencial direction.
Preferably, the pipeline also includes the first pipe nipple from seal structure, and the one of first pipe nipple and described sleeve pipe
End is connected through a screw thread;The second sealing ring is provided between first pipe nipple and the counterface of described sleeve pipe.
Preferably, the pipeline also includes the second pipe nipple and nut from seal structure;Second pipe nipple is sleeve knot
Structure, inner hole one end of the sleeve are provided with end cap with holes, and outwardly convex is provided with top pillar on the end cap with holes, and described second
The outer circle of pipe nipple is set as stepped cylindrical, wherein the other end of the outer circle and described sleeve pipe for the cylindrical section being relatively large in diameter it is interior
Hole cooperates, and is provided with third sealing ring between mating surface;The nut is set on the lesser cylindrical section of diameter, with described sleeve pipe
It is threadedly coupled.
The present invention also provides a kind of aircraft, the aircraft includes pipeline as described above from seal structure;The pipeline is certainly
Seal structure is for the connection between the pipeline on engine and aircraft.
The beneficial effects of the present invention are: pipeline of the invention is from seal structure, by making valve under the elastic force of spring
It realizes closure or openness, realizes the circulation or closure of medium.Installation connecting line is from seal structure on the engine, install convenient,
It is simple and compact for structure, safe and reliable.When the connecting line safeguarded to needs is assembled and disassembled, it can avoid oil contamination, leak, make ground service
Personnel's operation is convenient, improves engine maintenance.Can be extensively in the connecting line flown and between engine, and often assemble and disassemble
The structures such as pipeline applied.
Detailed description of the invention
Fig. 1 is the pipeline of one embodiment of the invention from the schematic diagram of seal structure.
Fig. 2 is schematic cross-section of the pipeline shown in FIG. 1 from the valve in seal structure.
Fig. 3 is schematic cross-section of the pipeline shown in FIG. 1 from the spring base in seal structure.
Fig. 4 is the schematic diagram of another direction of spring base shown in Fig. 3.
Fig. 5 is schematic cross-section of the pipeline shown in FIG. 1 from the second pipe nipple in seal structure.
Wherein, 1- casing, 11- ring packing boss, 2- valve, 21- through-hole, 22- seal face, the first sealing ring of 23-,
24- first step structure, 3- spring, 5- spring base, 51- stop ledge, 52- second step structure, 6- circlip for hole, 7-
First pipe nipple, the second pipe nipple of 8-, 81- top pillar, 9- nut, the second sealing ring of 17-, 18- third sealing ring.
Specific embodiment
To keep the purposes, technical schemes and advantages of the invention implemented clearer, below in conjunction in the embodiment of the present invention
Attached drawing, technical solution in the embodiment of the present invention is further described in more detail.In the accompanying drawings, identical from beginning to end or class
As label indicate same or similar element or element with the same or similar functions.Described embodiment is the present invention
A part of the embodiment, instead of all the embodiments.The embodiments described below with reference to the accompanying drawings are exemplary, it is intended to use
It is of the invention in explaining, and be not considered as limiting the invention.Based on the embodiments of the present invention, ordinary skill people
Member's every other embodiment obtained without creative efforts, shall fall within the protection scope of the present invention.Under
Face is described in detail the embodiment of the present invention in conjunction with attached drawing.
In the description of the present invention, it is to be understood that, term " center ", " longitudinal direction ", " transverse direction ", "front", "rear",
The orientation or positional relationship of the instructions such as "left", "right", "vertical", "horizontal", "top", "bottom" "inner", "outside" is based on attached drawing institute
The orientation or positional relationship shown, is merely for convenience of description of the present invention and simplification of the description, rather than the dress of indication or suggestion meaning
It sets or element must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as protecting the present invention
The limitation of range.
As shown in Figures 1 to 5, a kind of pipeline includes casing 1, valve 2 and spring 3 from seal structure.The inside of casing 1 is set
It is equipped with ring packing boss 11, the both ends of casing 1 are used for connecting line;Valve 2 is annulus structure, the annulus
Through-hole 21 is provided on side wall, the through-hole 21 is connected to an end face of valve 2, and the end face is defined as seal face 22, living
Door 2 is mounted on the inside of casing 1, is slidably matched with the inner wall of casing 1;Spring 3 is mounted on the inside of casing 1, and one end is fixed, separately
One end is contacted with valve 2;Spring 3 is that valve 2 provides thrust, the seal face and ring packing boss 11 by compression elasticity
Side cooperatively form sealing.Under natural conditions, compression generates elastic force after spring 3 is installed, and valve 2 is acted in the elastic force of spring 3
Under, the side of the ring packing boss 11 in the seal face and casing 1 cooperatively forms sealing;When valve 2 is by outer masterpiece
Used time, valve 2 continue compressed spring 3, the seal face of valve 2 and the ring packing inside casing 1 in the axis direction of spring 3
Distance is generated between the side of boss 11, at this point, the space in casing 1 in 2 two sides of valve passes through leading on 2 side wall of valve
Hole connection.
In the present embodiment, valve 2 be stepped sleeve, outer circle include 2 sections of different-diameters cylindrical section, wherein outer diameter compared with
The inner hole of big cylindrical section and casing 1 is slidably matched, and the side wall of the lesser cylindrical section of outer diameter is evenly distributed in 3 through-holes, described
Through-hole extends to the seal face 22 along the axis direction of valve 2 in the lateral wall compared with roundlet shell of column.
In the present embodiment, it is provided with seal groove on the seal face, the first sealing ring is installed in the seal groove
23, first sealing ring is bonded in the seal groove on valve 2 using adhesive by sulfurization.It the advantage is that, the
One sealing ring can increase the sealing safety between valve 2 and ring packing boss 11;Using adhesive by the first sealing ring
It is sulfided with seal groove, in 2 reciprocatory movement of valve, the first sealing ring is not fallen off.
In the present embodiment, the inner hole of valve 2 is provided with first step structure 24, and the end face of spring 3 withstands on described first
On the step surface of step structure, the cylindrical surface of the outer circle of spring 3 and the first step structure cooperates, and the advantage is that, spring 3
Outer circle and the first step structure cylindrical surface cooperate, can prevent spring 3 from bending in compression process.
In the present embodiment, pipeline also includes spring base 5 from seal structure, and spring base 5 is tube-in-tube structure, spring base 5 it is outer
The round inner hole with casing 1, the inner hole of spring base 5 are provided with second step structure 52, and the other end of spring 3 withstands on described the
On the step surface of two step structures, spring 3 cooperates in the outer circle at the end and the cylindrical surface of the second step structure.
In the present embodiment, the inner hole of casing 1 is provided with annular slot;Pipeline from seal structure also include circlip for hole
6, circlip for hole 6 is mounted in the annular slot, for the axially position spring base 5 in casing 1.
In the present embodiment, spring base 5 is provided with stop ledge 51, and the side of spring base 5 is arranged in stop ledge 51, only
Side and spring 3 where dynamic boss 5 is opposite, and stop ledge 51 is less than hole elasticity gear in the width of 5 circumferencial direction of spring base
The opening width of circle 6, the opening width refer to the opening of 6 circumferencial direction of circlip for hole.Spring base 5 and hole elasticity gear
After 6 installation of circle, stop ledge 51 is fallen in the opening of circlip for hole 6, can prevent spring base 5 from rotating.
It is fixed it is understood that spring base 5 can also be realized with casing 1 otherwise.For example, alternative at one
In embodiment, spring base 5 is connected through a screw thread with casing 1.
In the present embodiment, the pipeline also includes the first pipe nipple 7, the first pipe nipple 7 and the one of casing 1 from seal structure
End is connected through a screw thread;The second sealing ring 17 is provided between first pipe nipple 7 and the counterface of casing 1.Second sealing ring
For preventing the leakage between the first pipe nipple 7 and the connection screw thread of casing 1.
In the present embodiment, the pipeline also includes the second pipe nipple 8 and nut 9 from seal structure;Second pipe nipple 8 is set
Barrel structure, inner hole one end of the sleeve are provided with end cap with holes, and outwardly convex is provided with top pillar 81 on the end cap with holes, the
The outer circle of two pipe nipples 8 is set as stepped cylindrical, wherein the outer circle for the cylindrical section being relatively large in diameter is interior with the other end of casing 1
Hole cooperates, and is provided with third sealing ring 18 between mating surface;Nut 9 is set on the lesser cylindrical section of diameter, with 1 screw thread of casing
Connection.By rotating nuts 9, nut 9 pushes the second pipe nipple 8 by the step in 8 outer circle of the second pipe nipple, and top pillar 81 is withstood on
On the seal face of valve 2, top pillar 81 pushes valve 2,2 compressed spring 3 of valve, thus logical under the threading force effect of nut 9
Cross through-hole connection pipe nipple 7 and the second pipe nipple 8 on valve 2.
The present invention also provides a kind of aircraft, the aircraft includes pipeline as described above from seal structure;The pipeline is certainly
Seal structure is for the connection between the pipeline on engine and aircraft.When the connecting line safeguarded to needs is assembled and disassembled, can avoid
Oil contamination leaks, and keeps ground crew's operation convenient, improves engine maintenance.
Finally it is noted that the above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations.To the greatest extent
Present invention has been described in detail with reference to the aforementioned embodiments for pipe, those skilled in the art should understand that: it is still
It is possible to modify the technical solutions described in the foregoing embodiments, or part of technical characteristic is equally replaced
It changes;And these are modified or replaceed, the essence for technical solution of various embodiments of the present invention that it does not separate the essence of the corresponding technical solution
Mind and range.
Claims (9)
1. a kind of pipeline from seal structure, characterized by comprising:
Casing (1), described sleeve pipe (1) are internally provided with ring packing boss (11), and the both ends of casing (1) are used for connecting tube
Road;
Valve (2), the valve (2) are annulus structure, are provided with through-hole (21) on the side wall of the annulus, described
Through-hole (21) is connected to an end face of the valve (2), and the end face is defined as seal face (22), valve (2) installation
In the inside of described sleeve pipe (1), it is slidably matched with the inner wall of casing (1);
Spring (3), the spring (3) are mounted on the inside of described sleeve pipe (1), and one end is fixed, and the other end connects with the valve (2)
Touching;
The spring (3) is that the valve (2) provide thrust by compression elasticity, and the seal face and the ring packing are convex
The side of platform (11) cooperatively forms sealing;
The valve (2) is stepped sleeve, and outer circle includes the cylindrical section of 2 sections of different-diameters, wherein the biggish cylindrical section of outer diameter
It is slidably matched with the inner hole of described sleeve pipe (1), the side wall of the lesser cylindrical section of outer diameter is evenly distributed in 3 through-holes, the through-hole
The seal face (22) are extended to along the axis direction of valve (2) in the lateral wall compared with roundlet shell of column.
2. pipeline as described in claim 1 is from seal structure, it is characterised in that: be provided with seal groove, institute on the seal face
It states and is equipped in seal groove the first sealing ring (23), first sealing ring is bonded in using adhesive by sulfurization described
In seal groove on valve (2).
3. pipeline as claimed in claim 2 is from seal structure, it is characterised in that: the inner hole of the valve (2) is provided with First
The end face of stage structure (24), the spring (3) is withstood on the step surface of the first step structure, the outer circle of the spring (3)
Cooperate with the cylindrical surface of the first step structure.
4. pipeline as claimed in claim 3 is from seal structure, it is characterised in that: the pipeline from seal structure also include spring base
(5), the spring base (5) is tube-in-tube structure, the outer circle of the spring base (5) and the inner hole of described sleeve pipe (1), the bullet
The inner hole of spring abutment (5) is provided with second step structure (52), and the other end of the spring (3) withstands on the second step structure
On step surface, the outer circle of the spring (3) and the cylindrical surface of the second step structure cooperate.
5. pipeline as claimed in claim 4 is from seal structure, it is characterised in that: the inner hole of described sleeve pipe (1) is provided with annular snap
Slot;The pipeline also includes circlip for hole (6) from seal structure, and the circlip for hole (6) is mounted on the annular snap
In slot, it is used for the spring base described in the axially position of described sleeve pipe (1) (5).
6. pipeline as claimed in claim 5 is from seal structure, it is characterised in that: the spring base (5) is provided with stop ledge
(51), the stop ledge (51) is arranged in the side of the spring base (5), and stop ledge (51) is in spring base (5) circumference side
To width be less than the opening width of the circlip for hole (6), the opening width refers to circlip for hole (6) circumference
The opening in direction.
7. pipeline as claimed in claim 6 is from seal structure, it is characterised in that: the pipeline also includes that the first pipe connects from seal structure
Mouth (7), first pipe nipple (7) and one end of described sleeve pipe (1) are connected through a screw thread;First pipe nipple (7) and institute
It states and is provided with the second sealing ring (17) between the counterface of casing (1).
8. pipeline as claimed in claim 7 is from seal structure, it is characterised in that: the pipeline also includes that the second pipe connects from seal structure
Mouth (8) and nut (9);Second pipe nipple (8) is tube-in-tube structure, and inner hole one end of the sleeve is provided with end cap with holes,
Outwardly convex is provided with top pillar (81) on the end cap with holes, and the outer circle of second pipe nipple (8) is set as stepped cylindrical,
In, the inner hole of the other end of the outer circle and described sleeve pipe (1) for the cylindrical section being relatively large in diameter is provided with third between mating surface
Sealing ring (18);The nut (9) is set on the lesser cylindrical section of diameter, is threadedly coupled with described sleeve pipe (1).
9. a kind of aircraft, it is characterised in that: the aircraft includes pipeline as claimed in any one of claims 1 to 8 from seal structure;
The pipeline is from seal structure for the connection between the pipeline on engine and aircraft.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201710048918.7A CN106764149B (en) | 2017-01-23 | 2017-01-23 | A kind of pipeline is from seal structure and with its aircraft |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201710048918.7A CN106764149B (en) | 2017-01-23 | 2017-01-23 | A kind of pipeline is from seal structure and with its aircraft |
Publications (2)
Publication Number | Publication Date |
---|---|
CN106764149A CN106764149A (en) | 2017-05-31 |
CN106764149B true CN106764149B (en) | 2019-05-24 |
Family
ID=58941476
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201710048918.7A Active CN106764149B (en) | 2017-01-23 | 2017-01-23 | A kind of pipeline is from seal structure and with its aircraft |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN106764149B (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110318876A (en) * | 2019-06-28 | 2019-10-11 | 王壮 | A kind of highly integrated gas turbine generator set |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3777771A (en) * | 1971-05-27 | 1973-12-11 | Visscher P De | Joining of containers |
DE4134869A1 (en) * | 1990-10-25 | 1992-04-30 | Andre Leonard | Compressed air system for emptying silos - has flap body comprising two axially adjoining parts connected by quick fit couplings |
CN2846958Y (en) * | 2005-06-07 | 2006-12-13 | 尤卫建 | Self closing type water supply joint |
CN201242008Y (en) * | 2008-07-28 | 2009-05-20 | 简明锐 | Improved connection joint |
CN101793331A (en) * | 2009-02-02 | 2010-08-04 | 汉斯格罗股份公司 | Pipeline cut-off or switching valve |
CN203614960U (en) * | 2013-10-23 | 2014-05-28 | 中山市雅西环保科技有限公司 | Water pipe connector |
-
2017
- 2017-01-23 CN CN201710048918.7A patent/CN106764149B/en active Active
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3777771A (en) * | 1971-05-27 | 1973-12-11 | Visscher P De | Joining of containers |
DE4134869A1 (en) * | 1990-10-25 | 1992-04-30 | Andre Leonard | Compressed air system for emptying silos - has flap body comprising two axially adjoining parts connected by quick fit couplings |
CN2846958Y (en) * | 2005-06-07 | 2006-12-13 | 尤卫建 | Self closing type water supply joint |
CN201242008Y (en) * | 2008-07-28 | 2009-05-20 | 简明锐 | Improved connection joint |
CN101793331A (en) * | 2009-02-02 | 2010-08-04 | 汉斯格罗股份公司 | Pipeline cut-off or switching valve |
CN203614960U (en) * | 2013-10-23 | 2014-05-28 | 中山市雅西环保科技有限公司 | Water pipe connector |
Also Published As
Publication number | Publication date |
---|---|
CN106764149A (en) | 2017-05-31 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN206592212U (en) | A kind of valve hermetical structure and the aircraft engine jettison gear with it | |
CN203880267U (en) | Secondary sealing self-locking pipe joint assembly | |
CN104454757B (en) | hydraulic cylinder and its cylinder cover structure | |
CN106764149B (en) | A kind of pipeline is from seal structure and with its aircraft | |
US20170350464A1 (en) | Shock absorber | |
CN201544713U (en) | External sealing device of axle hub | |
CN206582514U (en) | A kind of unidirectional grease automatic releasing device | |
CN105952935A (en) | Hydraulic/pneumatic high pressure relief valve | |
CN102278468A (en) | Sealed hydraulic cylinder | |
CN205876861U (en) | Hydraulic cylinder stop device | |
CN209084273U (en) | A kind of water hammer absorber | |
US5079992A (en) | Longitudinally controllable adjustment device | |
CN204003105U (en) | A kind of motor excess oil releasing system | |
CN202852086U (en) | Double-valve-clack muffle check valve | |
CN208565790U (en) | Valve and its seal assembly | |
CN208621834U (en) | Endoscope | |
CN205537866U (en) | Liquid level is surveyd and is used sight glass device | |
CN208331348U (en) | Deflation check device | |
JP2017155921A (en) | Air breather device | |
CN111089206A (en) | Extension joint | |
CN108825780A (en) | A kind of reinforcing sealing ring | |
CN108799494A (en) | A kind of O-ring seal | |
CN210290335U (en) | Explosion-proof hydraulic cylinder | |
CN208886054U (en) | One kind is explosion-proof to cross water installations | |
CN106287065A (en) | A kind of air-cooled ducted air conditioner straight tube snap joint |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PB01 | Publication | ||
PB01 | Publication | ||
SE01 | Entry into force of request for substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
GR01 | Patent grant | ||
GR01 | Patent grant |