CN106353099B - A kind of sealing pressure-resistant apparatus for installing constant volume bullet fuel injector - Google Patents
A kind of sealing pressure-resistant apparatus for installing constant volume bullet fuel injector Download PDFInfo
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- CN106353099B CN106353099B CN201610835469.6A CN201610835469A CN106353099B CN 106353099 B CN106353099 B CN 106353099B CN 201610835469 A CN201610835469 A CN 201610835469A CN 106353099 B CN106353099 B CN 106353099B
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- fuel injector
- constant volume
- volume bullet
- gland
- pedestal
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M15/00—Testing of engines
- G01M15/02—Details or accessories of testing apparatus
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Fuel-Injection Apparatus (AREA)
Abstract
The present invention provides a kind of sealing pressure-resistant apparatus for installing constant volume bullet fuel injector, including fuel injector pedestal and fuel injector gland.The fuel injector pedestal is divided into upper, middle and lower three parts and up and down, inner hollow is for installing fuel injector, inner cavity and fuel injector are adapted, good limitation fuel injector is in radial movement, the fuel injector gland be with U-shaped lid with fuel injector pedestal is used is bolted, it is chimeric with fuel injector by U-shaped mouth, the rotation of fuel injector is limited, the position of fuel injector pedestal and two fixation fixing fuel injectors of fuel injector gland is passed through.Fuel injector pedestal has sealing device, can guarantee the sealing of fuel injector and constant volume bullet ontology.The configuration of the present invention is simple, easy for installation to can adapt to all types of erectors, fixed effect is good, can guarantee that the position of the fuel injector under high-frequency vibration does not change, and guarantee leakproofness, is adapted to the specific requirement of constant volume bullet spray burning test.
Description
Technical field
The present invention relates to a kind of sealing pressure-resistant apparatus for installing constant volume bullet fuel injector, belong to constant volume bullet sealing mounting technique neck
Domain.
Background technique
The quality of diesel combustion characteristic directly affects the dynamic property of diesel engine, economy and emission effect.It is better
The combustibility for improving diesel engine probes into diesel engine combustion from the root and combustion characteristics is necessary but reality
The combustion process of intermediate fuel oil is complicated and research of the influence factor excessively to diesel combustion theory causes very big difficulty.Structure letter
Constant volume combustion bomb that is single and can accurately controlling a variety of thermodynamic parameters, is to carry out basic research to diesel combustion theory
Important tool.Constant volume bullet fuel injector sealing pressure-resistant apparatus is the important component of constant volume bullet pilot system, seals resistance to pressure
The experimental enviroment that the stability and limitation constant volume bullet that constant volume bullet can be directly affected are simulated, influences the progress of test.Therefore, constant volume
Playing fuel injector sealing pressure-resistant apparatus is one of the critical component that diesel combustion theory is probed into using constant volume bullet.
204140219 U of Chinese patent CN proposes a kind of fuel injector mounting structure, cylinder cover ontology and mounting hole, oil spout
Device mounting groove is integrated casting, and isolation is just formed in casting and forming with cooling water cavity, be not required in addition be arranged for seal and every
Exhausted copper sheathing hole, cooling effect is good, can effectively reduce extrusion stress.102635475 A of Chinese patent CN proposes a kind of band
There is the installation device of fuel injector of independent cooling space, the independent cooling space that sealing is formed inside installation device of fuel injector can
Fuel injector is fully cooled, failure caused by reducing fuel injector due to overheat.The design of above-mentioned two patent considers biography
The factor for hot environment locating for diesel injector of uniting, but the test of this paper constant volume bullet is not to carry out prolonged working cycles not
It can make fuel injector hot soak condition and constant volume bullet structure is simply and there is no complicated structural stress, the present invention mainly examines
Consider stability of the constant volume bullet fuel injector in course of injection and the leakproofness under high-frequency vibration during high-temp combustion to ask
Topic.203296997 U of Chinese patent CN and 104728009 A of Chinese patent CN considers automobile engine and reserves installation space
Narrow, compact-sized steric requirements, design arranges rational and orderly, but this constant volume bullet fuel injector installation site space is open not
The problems such as there are narrow spaces, installation region is wide, and structural stress is simply of the invention to have a big feature.
Summary of the invention
It is fast and convenient the purpose of the invention is to can satisfy requirement of the constant volume bullet experiment for fuel injector installation pedestal
The fuel injector of replacement different model overcome fuel injector, while solving to install not as caused by high-frequency vibration during the experiment
Securely, overcome the status that fuel injector sealing is difficult under condition of high voltage, and a kind of sealing pressure resistance for installing constant volume bullet fuel injector is provided
Device.
The object of the present invention is achieved like this: including fuel injector installation pedestal and fuel injector gland, the fuel injector peace
Dress pedestal includes three cylindrical bodies being from top to bottom arranged, and the through-hole for being provided centrally with perforation of three cylindrical bodies, described logical
The outer surface of the inner surface in hole and fuel injector to be installed cooperates, and the fuel injector gland is rondelle structure, and rondelle knot
The U-shaped mouth of limitation fuel injector rotary motion is provided on structure, fuel injector gland and the cylindrical body of the top of fuel injector installation pedestal are logical
Cross threaded connection, also set up in the mediate cylindrical of fuel injector installation pedestal there are four threaded hole, and by bolt realize with calmly
Hold and play ontology connection, the lower surface of the mediate cylindrical of fuel injector installation pedestal is provided with two ring annular grooves, and two ring shapes
Groove is corresponding with the groove on constant volume bullet body top surface and is sealed by pressing sealing ring, under the fuel injector installation pedestal
Square cylinder is entrenched in the mounting hole of oil sprayer being arranged on constant volume bullet.
The invention also includes structure features some in this way:
1. the diameter of three cylindrical bodies is unequal.
2. fuel injector gland and the cylindrical body of the top of fuel injector installation pedestal are connected through a screw thread and refer to: in fuel injector pressure
It covers, be symmetrically arranged on the cylindrical body of the top of fuel injector installation pedestal and be connected to one there are four minor thread hole blending bolt
It rises.
Compared with prior art, the beneficial effects of the present invention are: fuel injector is wrapped in mounting base by the present invention to have
The damage of effect avoided in constant volume bullet installation process, can sufficiently be consolidated by the radial and axial fixation of installation pedestal and gland
Determine the position of fuel injector, will not because of constant volume bullet high frequency vibration and change in location occurs.
(1) present invention sealing stablize, by bolt cooperate O-ring, not only provided enough pretightning forces again can uniformly in advance
Clamp force improves sealing effect, and by the mutually matched mode of two seals, two seals are mutually supported, can be avoided
The experiment vibration of high frequency is lower to keep stablizing, and is unlikely to be dispelled leakage experiment gas.
(2) fuel injector is entrenched in mounting base by the present invention, not any during the installation process using the form surrounded entirely
Improper collision, avoid the damage of fuel injector during the installation process, also do not have in experimentation.
(3) present invention replacement is simple, when replacing the fuel injector of different model, only needs to change different mounting bases,
It is adaptable, it reduces and is punched in constant volume bullet ontology, not only saved the time, it is quick and easy for installation, more it is to pass through
Experimental situation leakproofness is further examined in different fuel injector installations, and experimental result more furniture is for comparative.
(4) the homemade oil atomizer installation structure of the present invention, there is no the limitations by traditional its mounting base of diesel oil, pass through
One whole fitting framework, fuel injector is wrapped up, and integral manufacturing is simple, suitable for the experimental enviroment of frequent replacement fuel injector,
Globality is strong, and the experimental pressure of receiving is concentrated mainly on bottom surface contact surface, passes through the close of the uniform pretightning force of sealing bolt and O-ring
Envelope coordinative role can guarantee that experimental situation is stablized.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the sealing pressure-resistant apparatus of constant volume bullet fuel injector provided by the invention；
Fig. 2 is the sealing pressure-resistant apparatus gland schematic diagram of constant volume bullet fuel injector；
Fig. 3 is the sealing pressure-resistant apparatus mounting base pedestal schematic diagram of constant volume bullet fuel injector；
Fig. 4 is the bottom view of mounting base pedestal；
In figure: 1- fuel injector gland；2- fuel injector installation pedestal；202,203- annular groove；3,4- bolt；303,304-
Threaded hole.
Specific embodiment
Present invention is further described in detail with specific embodiment with reference to the accompanying drawing.
In conjunction with Fig. 1 to Fig. 4, the present invention includes fuel injector installation pedestal 2 and fuel injector gland 1 and bolt 3,4；The spray
Oily device installation pedestal is an overall structure, a self-control part for the installation of constant volume bullet fuel injector, as shown in Figure 3,4, institute
It is three layers of upper, middle and lower that the fuel injector installation pedestal 2 stated, which is divided, respectively the different cylindrical body of diameter and intermediate up and down and be equipped with
For installing fuel injector, the inner cavity profile of through-hole matches through-hole with the outer wall feature of fuel injector, meanwhile, fuel injector installation pedestal
Lowest level cylindrical body is good to be entrenched in constant volume bullet mounting hole of oil sprayer, and the good limitation fuel injector of this two o'clock is high in constant volume bullet
Movement namely good limitation fuel injector under frequency vibration influence is in radial movement.
The 2 middle layer cylindrical body bottom surface of fuel injector installation pedestal possesses annular groove 202,203 and constant volume bullet top
Face groove is corresponding, has C1 chamfering in bottom surface, good fuel injector sealing is ensured under the premise of installation is simple, and pass through pressing
O-ring ensures good fuel injector sealing；It is uniformly distributed four threaded holes 304 on upper surface, is used for fuel injector installation pedestal 2
With the sealed connection of constant volume bullet ontology, most important sealing function is played for fuel injector；The fuel injector installation pedestal is most
Four threaded holes 303 are uniformly distributed on the cylindrical end face of upper layer, to fixing fuel injector gland 1.
As shown in Fig. 2, the fuel injector gland 1 is the rondelle structure for being provided with U-shaped mouth, pass through U-shaped mouth and fuel injector
Cooperation, limits the rotation of fuel injector, is mechanically connected by four bolts 3 and fuel injector installation pedestal 2 that are distributed in surrounding, to
The position of fixing fuel injector.Guarantee that the relative position of fuel injector during the experiment is stablized, it is very big for maintaining for leakproofness
Meaning.
The fuel injector gland 1 is connect with fuel injector installation pedestal 2 using bolt 3, and bolt 3 is evenly distributed on gland four
Week；Fuel injector installation pedestal 2 and constant volume combustion bomb be not only connected by screw bolts but also had existed and sealed, and were bolted offer pretightning force, pressed
Tight O-ring seal guarantees sealing performance；Sealing between fuel injector installation pedestal 2 and fuel injector is by oil sprayer clamping copper packing
The mode of piece seals, and guarantees that fuel injector installation pedestal inner cavity is adapted to the installation of various fuel injectors.
Described three layers of fuel injector installation pedestal are height, and the cylindrical body that radius is all different can be according to specific oil spout
Device shape is reequiped.
In order to facilitate the fuel injector of replacement different model, a circular hole is made a call in the middle and upper part of body point, it is in addition mating
Do a lid, punched on lid, fuel injector be installed, when replace fuel injector, needed to do installation again and cover, in lid
It is above matched to make mounting hole.
Claims (2)
1. a kind of sealing pressure-resistant apparatus for installing constant volume bullet fuel injector, it is characterised in that: including fuel injector installation pedestal and oil spout
Device gland, the fuel injector installation pedestal includes three cylindrical bodies being from top to bottom arranged, and the center of three cylindrical bodies is arranged
There is the through-hole of perforation, the outer surface cooperation of the inner surface of the through-hole and fuel injector to be installed, the fuel injector gland is round
Plate profile structure, and the U-shaped mouth of limitation fuel injector rotary motion is provided in rondelle structure, fuel injector gland and fuel injector install base
The cylindrical body of the top of seat is connected through a screw thread, and is also set up in the mediate cylindrical of fuel injector installation pedestal there are four threaded hole,
And realized by bolt and connect with constant volume bullet ontology, the lower surface of the mediate cylindrical of fuel injector installation pedestal is provided with two rings
Connected in star, and two ring annular grooves are corresponding with the groove on constant volume bullet body top surface and sealed by pressing sealing ring, it is described
The lower cylindrical body of fuel injector installation pedestal is entrenched in the mounting hole of oil sprayer being arranged on constant volume bullet；The diameter of three cylindrical bodies
It is unequal, and the diameter of the cylindrical body of interlude is greater than the diameter of the cylindrical body at both ends.
2. a kind of sealing pressure-resistant apparatus for installing constant volume bullet fuel injector according to claim 1, it is characterised in that: fuel injector
Gland and the cylindrical body of the top of fuel injector installation pedestal are connected through a screw thread and refer to: on fuel injector gland, fuel injector installation
It is symmetrically arranged on the cylindrical body of the top of pedestal and links together there are four minor thread hole blending bolt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610835469.6A CN106353099B (en) | 2016-09-20 | 2016-09-20 | A kind of sealing pressure-resistant apparatus for installing constant volume bullet fuel injector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610835469.6A CN106353099B (en) | 2016-09-20 | 2016-09-20 | A kind of sealing pressure-resistant apparatus for installing constant volume bullet fuel injector |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106353099A CN106353099A (en) | 2017-01-25 |
| CN106353099B true CN106353099B (en) | 2019-01-15 |
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ID=57858388
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610835469.6A Active CN106353099B (en) | 2016-09-20 | 2016-09-20 | A kind of sealing pressure-resistant apparatus for installing constant volume bullet fuel injector |
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| Country | Link |
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| CN (1) | CN106353099B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111042969A (en) * | 2019-12-10 | 2020-04-21 | 西安交通大学 | Test device for measuring flash boiling spray |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002147316A (en) * | 2000-11-15 | 2002-05-22 | Denso Corp | Internal combustion engine and fuel injector used for it |
| CN101943097B (en) * | 2010-09-03 | 2011-11-16 | 北京航空航天大学 | Atomizing test constant-volume elastomer |
| CN102635475A (en) * | 2012-05-05 | 2012-08-15 | 中国兵器工业集团第七〇研究所 | Installation device of fuel injector with independent cooling space |
| CN103726965B (en) * | 2013-11-19 | 2017-01-11 | 大连民族学院 | Novel device for visible-combustion experiment |
| CN104728009A (en) * | 2013-12-22 | 2015-06-24 | 李洋 | Device for mounting car engine fuel injectors |
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2016
- 2016-09-20 CN CN201610835469.6A patent/CN106353099B/en active Active
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| Publication number | Publication date |
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| CN106353099A (en) | 2017-01-25 |
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