CN208337030U - Bypass protector - Google Patents

Bypass protector Download PDF

Info

Publication number
CN208337030U
CN208337030U CN201821125760.5U CN201821125760U CN208337030U CN 208337030 U CN208337030 U CN 208337030U CN 201821125760 U CN201821125760 U CN 201821125760U CN 208337030 U CN208337030 U CN 208337030U
Authority
CN
China
Prior art keywords
drainage thread
angle steel
protective case
fuse switch
fusible link
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
Application number
CN201821125760.5U
Other languages
Chinese (zh)
Inventor
萧伟云
樊伟成
涂智豪
钟健强
彭康华
邓永成
刘坊
万国平
吴华锋
何伟强
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Guangdong Power Grid Co Ltd
Dongguan Power Supply Bureau of Guangdong Power Grid Co Ltd
Original Assignee
Guangdong Power Grid Co Ltd
Dongguan Power Supply Bureau of Guangdong Power Grid Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Guangdong Power Grid Co Ltd, Dongguan Power Supply Bureau of Guangdong Power Grid Co Ltd filed Critical Guangdong Power Grid Co Ltd
Priority to CN201821125760.5U priority Critical patent/CN208337030U/en
Application granted granted Critical
Publication of CN208337030U publication Critical patent/CN208337030U/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Landscapes

  • Fuses (AREA)

Abstract

The utility model provides a kind of bypass protector, replaces fuse switch for on-load, is related to electrical technical field of keeping the safety in production, including drainage thread, protective case, fusible link and support device;When on-load, which replaces outdoor platform, becomes fuse switch, by the way that drainage thread is electrically connected with the tie point of fuse switch, Bolted angle connection by becoming support device and external platform again, support device is connected to the outside of protective case, it is fast to realize simple to install, low manufacture cost, with safety, it is convenient, robust techniques effect, it is acted on when alleviating live-line replacing fuse switch existing in the prior art using unprotect in drainage thread streamlined process, in operation process, if transformer is abnormal or failure, it will cause overstepping, also the technical issues of jeopardizing personnel safety and equipment safety;Security risk when operator's on-load replacement fuse switch is effectively reduced, operation safety is improved.

Description

Bypass protector
Technical field
The utility model relates to technical field of electricity of keeping the safety in production, more particularly, to a kind of bypass protector.
Background technique
Fuse switch is 10kV distribution line branch line and a kind of most common protective switch of the short circuit of distribution transformer, It has the characteristics that economical, easy to operate, adaptation outdoor environment is strong, is widely used in 10kV distribution line and distribution transformer Device primary side is as protecting and carry out equipment throwing, cut operation and be used;When fuse switch breaks down, on-load is needed more Change fuse switch.
The scheme for replacing fuse switch in the prior art is mainly: point access one is drawn above and below fuse switch Streamline, uninterrupted user power utilization disconnect fuse switch, replace fuse switch.
But defect exists in the prior art: drainage thread works as change without the similar the same defencive function of fuse switch When exception or failure occurs in depressor, because drainage thread does not have protective effect, overstepping will be caused, can also jeopardize personnel's peace Entirely, equipment safety and safe operation of electric network.
Utility model content
The purpose of this utility model is to provide bypass protectors, to alleviate livewire work existing in the prior art more It is acted on when changing fuse switch using unprotect in drainage thread streamlined process, in operation process, if transformer occurs Exception or failure, the technical issues of will cause overstepping, also jeopardize personnel safety and equipment safety.
A kind of bypass protector provided by the utility model replaces fuse switch for on-load, comprising: drainage Line, protective case, fusible link and support device;
Drainage thread is provided with two, and two drainage threads are electrically connected with two tie points of fuse switch respectively;
Fusible link is set to inside protective case, and two drainage threads are respectively protruding into far from one end of fuse switch to protection Set is internal, and is electrically connected with fusible link;
The Bolted angle connection that the both ends of support device become with protective case outer wall and external platform respectively, support device will be for that will protect Set keeps safe distance with ground.
Further, protective case includes transparent pipe and insulating sleeve;
There are two insulating sleeve settings, and two insulating sleeves are respectively arranged at the both ends of transparent pipe, and transparent pipe is inserted in In insulating sleeve;
Drainage thread is inserted in insulating sleeve, and fusible link is set in transparent pipe, and fusible link stretches out transparent pipe and draws with described Streamline electrical connection.
Further, the air pressure relief hole for discharging air pressure when fusible link fusing is provided on transparent pipe.
Further, air pressure relief hole is provided with multiple along the length of transparent pipe.
Further, fusible link is detachably connected with drainage thread.
Further, support device includes drainage thread support rod, angle steel card and adjusting component;
Drainage thread support rod is connect with angle steel card, and angle steel card is used for the company fixed between drainage thread support rod and platform angle steel It connects;The one end of drainage thread support rod far from angle steel card is abutted with the protective case;
It adjusts component to connect with angle steel card, for controlling connecting or separating between angle steel card and platform angle steel.
Further, drainage thread support rod is provided with limiting slot far from one end of angle steel card, and protective case can be placed in limit In slot.
Further, adjusting component includes insulation tube, elastic component and connecting rod;
Elastic component and connecting rod are all set in insulation tube, and connecting rod is stretched out insulation tube and connect with angle steel card, and elastic component can Drive connecting rod mobile relative to the length direction of insulation tube, to control connecting or separating between angle steel card and platform angle steel.
Further, drainage thread is electrically connected by wire clamp with the tie point of fuse switch.
Further, wire clamp is hedgehog hydnum wire clamp;The bolt of hedgehog hydnum wire clamp is ball-type.
A kind of bypass protector provided by the utility model replaces fuse switch for on-load, comprising: drainage Line, protective case, fusible link and support device;Drainage thread is provided with two, two drainage threads respectively with fuse switch two A tie point electrical connection;Fusible link is set to inside protective case, and two one end of drainage thread far from fuse switch are stretched respectively Enter to protective case, and is electrically connected with fusible link;The angle that the both ends of support device become with protective case outer wall and external platform respectively Steel connection, support device are used to protective case and ground keeping safe distance;Outdoor platform, which is replaced, when on-load becomes fuse switch When, by the way that drainage thread is electrically connected with the tie point of fuse switch, then the angle steel by becoming support device and external platform Support device, is connected to the outside of protective case by connection, and it is fast to realize simple to install, low manufacture cost, has safety, side Just, robust techniques effect, using drainage when alleviating live-line replacing fuse switch existing in the prior art Unprotect acts in line streamlined process, in operation process, if transformer is abnormal or failure, will cause overstepping, The technical issues of jeopardizing personnel safety and equipment safety;Effectively reduce operator's on-load replacement fuse switch when Security risk improves operation safety.
Detailed description of the invention
It, below will be right in order to illustrate more clearly of specific embodiment of the present invention or technical solution in the prior art Specific embodiment or attached drawing needed to be used in the description of the prior art are briefly described, it should be apparent that, it is described below In attached drawing be that some embodiments of the utility model are not paying creativeness for those of ordinary skill in the art Under the premise of labour, it is also possible to obtain other drawings based on these drawings.
Fig. 1 is the overall structure diagram of bypass protector provided by the embodiment of the utility model;
Fig. 2 is the drainage thread of bypass protector provided by the embodiment of the utility model and the structural schematic diagram of protective case;
Fig. 3 is the partial enlargement structural representation for the bypass protector that Fig. 2 is provided;
Fig. 4 is the structural schematic diagram of the support device of bypass protector provided by the embodiment of the utility model.
Icon: 100- drainage thread;200- protective case;201- transparent pipe;202- insulating sleeve;300- fusible link;400- branch Support arrangement;401- drainage thread support rod;402- angle steel card;403- adjusts component;413- insulation tube;423- elastic component;433- connects Extension bar;500- air pressure relief hole;600- limiting slot;700- wire clamp.
Specific embodiment
The technical solution of the utility model is clearly and completely described below in conjunction with attached drawing, it is clear that described Embodiment is the utility model a part of the embodiment, instead of all the embodiments.Based on the embodiments of the present invention, originally Field those of ordinary skill every other embodiment obtained without making creative work belongs to practical Novel protected range.
In the description of the present invention, it should be noted that such as occur term " center ", "upper", "lower", " left side ", " right side ", "vertical", "horizontal", "inner", "outside" etc., indicated by orientation or positional relationship be orientation based on the figure or Positional relationship is merely for convenience of describing the present invention and simplifying the description, rather than the device or member of indication or suggestion meaning Part must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as limiting the present invention. In addition, such as there is term " first ", " second ", " third " are used for description purposes only, be not understood to indicate or imply opposite Importance.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, such as there is term " installation ", " connected ", " connection " shall be understood in a broad sense, for example, it may be fixedly connected, may be a detachable connection or one Connect to body;It can be mechanical connection, be also possible to be electrically connected;It can be directly connected, it can also be indirect by intermediary It is connected, can be the connection inside two elements.For the ordinary skill in the art, on being understood with concrete condition State the concrete meaning of term in the present invention.
Fig. 1 is the overall structure diagram of bypass protector provided in this embodiment;Wherein, the two of support device 400 The Bolted angle connection that end becomes with 200 outer wall of protective case and external platform respectively.
Fig. 2 is the drainage thread of bypass protector provided in this embodiment and the structural schematic diagram of protective case;Wherein, transparent Pipe 201 and drainage thread 100 are inserted in insulating sleeve 202.
Fig. 3 is the partial enlargement structural representation for the bypass protector that Fig. 2 is provided;Wherein, fusible link 300 stretches out transparent Pipe 201 is electrically connected with drainage thread 100, and air pressure relief hole 500 is provided on transparent pipe 201.
Fig. 4 is the structural schematic diagram of the support device of bypass protector provided in this embodiment;Wherein, component is adjusted 403 include insulation tube 413, elastic component 423 and connecting rod 433.
As shown in Figs 1-4, a kind of bypass protector provided in this embodiment, for on-load replacement drop type fusing Device, comprising: drainage thread 100, protective case 200, fusible link 300 and support device 400;Drainage thread 100 is provided with two, and two are drawn Streamline 100 is electrically connected with two tie points of fuse switch respectively;Fusible link 300 is set to inside protective case 200, and two Drainage thread 100 is respectively protruding into far from one end of fuse switch to protective case 200, and is electrically connected with fusible link 300;Branch The Bolted angle connection that the both ends of support arrangement 400 become with 200 outer wall of protective case and external platform respectively, support device 400 will be for that will protect Set 200 keeps safe distance with ground.
Wherein, drainage thread 100 is made of single flexible cable, surface insulation, has the function of transmitting electric current and protection.
Further, fusible link 300 is detachably connected with drainage thread 100.
The connection type of drainage thread 100 and fusible link 300 can be a variety of, such as: internal wire is directly wrapped in one It rises;For another example: being electrically connected internal wire by metal connection buckle.
The part that fusible link 300 and fusible link 300 are connect by protective case 200 with drainage thread 100 carries out insulation protection, protects Safety is demonstrate,proved.
Support device 400 has the function of support and spacing distance, when will have the protective case 200 of fusible link 300 and draw After streamline 100 is electrically connected, the Bolted angle connection that one end of support device 400 and external platform are become, then by support device 400 The other end abutted with protective case 200 so that protection and drainage thread 100 and ground with fusible link 300 keep pacifying Full distance facilitates operator to carry out the replacement of fuse switch.
Preferably, fusible link 300 uses standard drop type fusible link 300, quick and easy for installation.
A kind of bypass protector provided in this embodiment replaces fuse switch for on-load, comprising: drainage thread 100, protective case 200, fusible link 300 and support device 400;Drainage thread 100 is provided with two, two drainage threads 100 respectively with Two tie points of fuse switch are electrically connected;Fusible link 300 is set to inside protective case 200, and two drainage threads 100 are separate One end of fuse switch is respectively protruding into protective case 200, and is electrically connected with fusible link 300;The two of support device 400 The Bolted angle connection that end becomes with 200 outer wall of protective case and external platform respectively, support device 400 are used to keep protective case 200 and ground Safe distance;When on-load, which replaces outdoor platform, becomes fuse switch, by by the company of drainage thread 100 and fuse switch Contact electrical connection, then the Bolted angle connection by becoming support device 400 and external platform, are connected to protective case for support device 400 200 outside, it is fast to realize simple to install, low manufacture cost, have conveniently, safely, robust techniques effect, alleviate existing It is acted on when live-line replacing fuse switch using unprotect in 100 streamlined process of drainage thread present in technology, In operation process, if transformer is abnormal or failure, overstepping will cause, also jeopardize personnel safety and equipment safety Technical problem;Security risk when operator's on-load replacement fuse switch is effectively reduced, operation safety is improved.
On the basis of the above embodiments, further, the protective case 200 of bypass protector provided in this embodiment wraps Include transparent pipe 201 and insulating sleeve 202;There are two the settings of insulating sleeve 202, and two insulating sleeves 202 are respectively arranged at transparent The both ends of pipe 201, and transparent pipe 201 is inserted in insulating sleeve 202;Drainage thread 100 is inserted in insulating sleeve 202, fusing Silk 300 is set in transparent pipe 201, and fusible link 300 stretches out transparent pipe 201 and is electrically connected with the drainage thread 100.
The material of transparent pipe 201 can be a variety of, such as: plastic, transparent cover, glass transparent pipe 201 etc., preferably, transparent The material of pipe 201 is plastic, transparent cover;By plastic, transparent cover can observe at any time fusible link 300 state and plastics it is saturating It is bright cover have the advantages that insulation with it is at low cost.
Insulating sleeve 202 is respectively arranged at the both ends of transparent pipe 201, it is preferable that insulating sleeve 202 is successively covered including multiple If pipeline, when needing to connect drainage thread 100 and when fusible link 300, insulating sleeve 202 foreshortened to most short status, is conveniently drawn Streamline 100 is connect with fusible link 300;After the completion of drainage thread 100 is connect with fusible link 300, by multiple sets of insulating sleeve 202 Pipe stretches out, and is attached the masking insulation at place, ensure that safe operation.
The material of insulating sleeve 202 can be multiple groups, such as: plastics, plastic cement, rubber etc., preferably, insulating sleeve 202 Material be plastics.
Further, the air pressure relief hole 500 that air pressure is discharged when fusing for fusible link 300 is provided on transparent pipe 201.
Wherein, when fusible link 300 fuses, for air pressure relief hole 500 for imitating release air pressure, transparent procedures is visible.
Further, air pressure relief hole 500 is provided with multiple along the length of transparent pipe 201.
Preferably, the quantity of air pressure relief hole 500 is three, and three air pressure relief holes 500 are located at transparent pipe 201 Both ends and intermediate position.
Bypass protector provided in this embodiment can observe the state of fusible link 300 by transparent pipe 201 at any time, And insulated by the masking that insulating sleeve 202 is attached place, it ensure that safe operation;In addition, when fusible link 300 fuses When, air pressure relief hole 500 reduces the security risk of on-load replacement fuse switch operation, more for imitating release air pressure Add practical.
On the basis of the above embodiments, further, the support device 400 of bypass protector provided in this embodiment Including drainage thread support rod 401, angle steel card 402 and adjust component 403;Drainage thread support rod 401 is connect with angle steel card 402, angle Steel card 402 is used for the connection fixed between drainage thread support rod 401 and platform angle steel;Drainage thread support rod 401 is far from angle steel card 402 one end is abutted with protective case 200;It adjusts component 403 to connect with angle steel card 402, for controlling angle steel card 402 and platform angle Connecting or separating between steel.
Wherein, the length range of drainage thread support rod 401 is 550-650MM, it is preferable that the length of drainage thread support rod 401 Degree is 600MM.
Preferably, drainage thread 100 and the safe distance on ground are 600MM, so that operator is more convenient to install.
It is provided with card slot on angle steel card 402, can be detachably connected with platform angle steel by card slot.
Specifically, angle steel card 402 and the connection of platform angle steel be can control by adjusting component 403 or separated, when need When drainage thread support rod 401 is fixed, angle steel card 402 and platform angle steel are fixed, then by the another of drainage thread support rod 401 End is abutted with protective case 200, to be supported effect.
Further, drainage thread support rod 401 is provided with limiting slot 600, protective case 200 far from one end of angle steel card 402 It can be placed in limiting slot 600.
Specifically, the cross sectional shape of limiting slot 600 is trapezoidal, and the two sides of limiting slot 600 are in opening angle, so as to Preferably protective case 200 is gradually placed in limiting slot 600, hence for protective case 200 two sides carried out limit and Moving left and right for protective case 200 is placed in clamping.
Further, adjusting component 403 includes insulation tube 413, elastic component 423 and connecting rod 433;Elastic component 423 and company Extension bar 433 is all set in insulation tube 413, and connecting rod 433 is stretched out insulation tube 413 and connect with angle steel card 402, and elastic component 423 can Drive connecting rod 433 mobile relative to the length direction of insulation tube 413, to control the company between angle steel card 402 and platform angle steel It connects or separates.
Specifically, hand-held part of the insulation tube 413 as operator, by the position for adjusting elastic component 423 and connecting rod 433 It moves, the rotation of adjustable angle steel card 402, so as to the company between more convenient control angle steel card 402 and platform angle steel It connects.
Elastic component 423 can be a variety of, such as: spring, elastic piece, elastic rod etc., preferably, elastic component 423 is spring.
Further, drainage thread 100 is electrically connected by wire clamp 700 with the tie point of fuse switch.
When wherein, since the tie point of drainage thread 100 and fuse switch to be attached, need fast and safely into Row connection, so can be preferably attached drainage thread 100 and the tie point of fuse switch by wire clamp 700.
Further, wire clamp 700 is hedgehog hydnum wire clamp;The bolt of hedgehog hydnum wire clamp is ball-type.
Specifically, hedgehog hydnum wire clamp main material uses copper production, when bolt is that ball-type can reduce installation using insulating glove method Between.
Bypass protector provided in this embodiment is grasped by the combination of insulation tube 413, elastic component 423 and connecting rod 433 Make, can control connecting or separating between angle steel card 402 and platform angle steel, so as to adjust drainage thread support rod 401 with The connection of protective case 200, so that drainage thread 100 and ground have safe distance, it is fast to realize simple to install, cost of manufacture It is low, have conveniently, safely, robust techniques effect, be abnormal in transformer or when failure, protection silk disconnected, protection Personnel and equipment safety.
Finally, it should be noted that the above various embodiments is only to illustrate the technical solution of the utility model, rather than it is limited System;Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should Understand: it is still possible to modify the technical solutions described in the foregoing embodiments, or to some or all of Technical characteristic is equivalently replaced;And these are modified or replaceed, it does not separate the essence of the corresponding technical solution, and this is practical new The range of each embodiment technical solution of type.

Claims (10)

1. a kind of bypass protector replaces fuse switch for on-load characterized by comprising drainage thread, protection Set, fusible link and support device;
The drainage thread is provided with two, and two drainage threads are electrically connected with two tie points of fuse switch respectively;
The fusible link is set to inside the protective case, and two one end of the drainage thread far from fuse switch are stretched respectively Enter to the protective case, and is electrically connected with the fusible link;
The Bolted angle connection that the both ends of the support device become with the protective case outer wall and external platform respectively, the support device are used In by the protective case and ground keep safe distance.
2. bypass protector according to claim 1, which is characterized in that the protective case includes transparent pipe and insulation sleeve Pipe;
There are two the insulating sleeve settings, and two insulating sleeves are respectively arranged at the both ends of the transparent pipe, and described Transparent pipe is inserted in the insulating sleeve;
The drainage thread is inserted in the insulating sleeve, and the fusible link is set in the transparent pipe, and the fusible link is stretched The transparent pipe is electrically connected with the drainage thread out.
3. bypass protector according to claim 2, which is characterized in that be provided on the transparent pipe for fusible link The air pressure relief hole of air pressure is discharged when fusing.
4. bypass protector according to claim 3, which is characterized in that the air pressure relief hole is along the transparent pipe Length be provided with it is multiple.
5. bypass protector according to claim 2, which is characterized in that the fusible link and the drainage thread are detachable Connection.
6. bypass protector according to claim 1, which is characterized in that the support device includes drainage thread support Bar, angle steel card and adjusting component;
The drainage thread support rod is connect with the angle steel card, and the angle steel card becomes for fixing the drainage thread support rod and platform Connection between angle steel;The drainage thread support rod is abutted far from one end of the angle steel card with the protective case;
The adjusting component is connect with the angle steel card, for controlling the connection between the angle steel card and platform angle steel or dividing From.
7. bypass protector according to claim 6, which is characterized in that the drainage thread support rod is far from the angle steel One end of card is provided with limiting slot, and the protective case can be placed in the limiting slot.
8. bypass protector according to claim 6, which is characterized in that the adjusting component includes insulation tube, elasticity Part and connecting rod;
The elastic component and the connecting rod are all set in the insulation tube, the connecting rod stretch out the insulation tube with it is described The connection of angle steel card, the elastic component can drive the connecting rod mobile relative to the length direction of the insulation tube, to control State connecting or separating between angle steel card and platform angle steel.
9. bypass protector according to claim 1-8, which is characterized in that the drainage thread by wire clamp with The tie point of fuse switch is electrically connected.
10. bypass protector according to claim 9, which is characterized in that the wire clamp is hedgehog hydnum wire clamp;The hedgehog hydnum The bolt of wire clamp is ball-type.
CN201821125760.5U 2018-07-16 2018-07-16 Bypass protector Active CN208337030U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201821125760.5U CN208337030U (en) 2018-07-16 2018-07-16 Bypass protector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201821125760.5U CN208337030U (en) 2018-07-16 2018-07-16 Bypass protector

Publications (1)

Publication Number Publication Date
CN208337030U true CN208337030U (en) 2019-01-04

Family

ID=64784049

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201821125760.5U Active CN208337030U (en) 2018-07-16 2018-07-16 Bypass protector

Country Status (1)

Country Link
CN (1) CN208337030U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108599005A (en) * 2018-07-16 2018-09-28 广东电网有限责任公司 Bypass protector

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108599005A (en) * 2018-07-16 2018-09-28 广东电网有限责任公司 Bypass protector

Similar Documents

Publication Publication Date Title
CN204349579U (en) A kind of distribution line automatic switching system
CN208337030U (en) Bypass protector
US20240106208A1 (en) High voltage overhead electric transmission line equipped with switchgear unit
CN108599005A (en) Bypass protector
CN209496672U (en) A kind of fixed external series gap drop type lightning protection device
CN205081443U (en) Lightning protection metal shaft tower
CN208400801U (en) A kind of outdoor high-voltage drop type fuse
CN203352290U (en) Substation equipment inspection instrument
CN203434115U (en) Wind power station special-purpose drop-out fuse
CN202888966U (en) Intelligent power grid branch line control equipment
CN205863847U (en) The orientable bus duct of safety that a kind of power equipment is special
CN206060164U (en) Overvoltage protection device
CN101572390A (en) Electric operating fuse wire protector without electricity failure
CN104733223B (en) Automatic insulation protecting device for compression spring resetting type breaker
CN203277295U (en) Fuse base seat
CN106655139A (en) Novel surge protector
CN208208705U (en) A kind of fuse
CN201191719Y (en) Uninterrupted electric operation fuse protection tool
CN206976278U (en) A kind of drop type transformer station high-tension fuse
CN209329686U (en) A kind of protective relaying device for distinguishing station internal fault and line fault
CN108565194A (en) A kind of fuse being easily installed replacement
CN205882340U (en) Secondary circuit of transformer substation access device
CN215342455U (en) Gateway type intelligent Internet of things breaker
CN113675781B (en) Quick insulating tool
CN107681586A (en) A kind of orientable bus duct of the special safety of power equipment

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant