CN205333260U - Based on cummins PT sprayer leakproofness detection device - Google Patents
Based on cummins PT sprayer leakproofness detection device Download PDFInfo
- Publication number
- CN205333260U CN205333260U CN201521076577.7U CN201521076577U CN205333260U CN 205333260 U CN205333260 U CN 205333260U CN 201521076577 U CN201521076577 U CN 201521076577U CN 205333260 U CN205333260 U CN 205333260U
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- CN
- China
- Prior art keywords
- fuel injector
- thrust unit
- screw rod
- comings
- plate
- 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.)
- Withdrawn - After Issue
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Abstract
The utility model discloses a based on cummins PT sprayer leakproofness detection device, including left side board and right side board, parallel arrangement is in horizontally two guide rails between left side board and the right side board are provided with between two guide rails along guide rail reciprocating motion's a thrust unit, the 2nd thrust unit and strutting arrangement with stretching over in proper order from left to right, be connected with the pressure measurement device between a thrust unit and the 2nd thrust unit, the range finding installing support that is provided with the screw rod adjustment subassembly of connecting a thrust unit on the board of left side and is used for installing range unit, be provided with rocker -type closing device on the board of right side, relatively be provided with the hold -down head that is used for pressing from both sides tight sprayer on the 2nd thrust unit and the closing device, the cover has compression spring on the guide rail between the 2nd thrust unit and the strutting arrangement. The utility model discloses can carry out air feed, gas collection according to the gas circuit that awaits measuring, carry out the leakproofness to the sealed face of sprayer and detect, simple structure, convenient operation, detection precision are high.
Description
Technical field
This utility model relates to a kind of based on comings PT fuel injector device for detecting sealability。
Background technology
Parts important in fuel injector electromotor, PT fuel injector is usually used in large-scale engineering machinery engine, such as mining machinery is medium, due to work under bad environment, engine fuel injector long time continuous working, the accurate coupling part in fuel injector is likely to occur the abrasion of critical component, there will be oil leakage phenomenon time serious, it normally being used and has a great impact, therefore fuel injector must carry out sealing propertytest in use for some time。At present, the detecting device not matched with fuel injector sealing propertytest。
Utility model content
The problem that this utility model aims to solve the problem that is, a kind of based on comings PT fuel injector device for detecting sealability, to realize the purpose of the detection each critical component sealing property of fuel injector。
This utility model adopts the following technical scheme that realization:
A kind of based on comings PT fuel injector device for detecting sealability, including left plate and right plate, it is horizontally parallel two guide rails being arranged between described left plate and right plate, it is provided with the first promotion device moved back and forth along guide rail from left to right successively across ground between two guide rails, second promotes device and a support arrangement, described first promotes device and second to promote is connected to pressure tester between device, described left plate is provided with the screw rod connecting the first promotion device and adjusts assembly and for installing the range finding mounting bracket of range unit, described right plate is provided with rocker-type hold down gag, described second promotion device and hold down gag are relatively provided with the hold-down head for clamping fuel injector, guide rail between described second promotion device and a support arrangement is cased with compression spring。
Further, described screw rod adjusts screw rod, the rotary handle that the nut that assembly includes being fixed on left plate coordinates with described nut thread, one end of described screw rod connects the first promotion device, the other end connects rotary handle, rotates screw rod by rotary handle and regulates the position of the first promotion device control oil-fuel injector needle-valve。
Further, sliding sleeve that described rocker-type hold down gag includes being fixed on right plate and the push rod that described sliding sleeve is slidably matched, L-shaped rocking bar, connecting plate, described connecting plate one end and right plate are hinged, the other end is hinged with L-shaped rocking bar corner, one end of described push rod connects the minor face free end of hold-down head, the other end and L-shaped rocking bar and is hinged。
Further, also including for installing the installation panel regulating valve, Pressure gauge, bubble cup, logical many screws connect left plate and right plate。
Further, described range unit is amesdial。
This utility model utilizes and adjusts assembly, and observe amesdial, manometric numerical value, the plunger within fuel injector, needle-valve are adjusted ad-hoc location, carries out supplying according to design gas circuit, gas collection, the sealing surface of fuel injector carries out sealing propertytest, and simple in construction, easy to operate, accuracy of detection is high。
Accompanying drawing explanation
Fig. 1 is the schematic front view of this utility model embodiment。
Fig. 2 is the schematic top plan view of this utility model embodiment。
The seal tightness test pneumatic diagram of Fig. 3 fuel injector oil input channel ball check valve sealing surface。
The seal tightness test pneumatic diagram of Fig. 4 fuel injector slide block and plunger body sealing surface。
The seal tightness test pneumatic diagram of Fig. 5 oil-fuel injector needle-valve and needle-valve body sealing surface。
The seal tightness test pneumatic diagram of Fig. 6 oil return of oil injector road ball check valve sealing surface。
Shown in figure it is: 1-installs panel, 2-finds range mounting bracket, 3-screw mandrel adjusts assembly, 4-guide rail, 5-pressure tester, 6-prop up support arrangement, 7-hold down gag, 8-L shape rocking bar, 9-first promote device, 10-second to promote device, 11-to compress spring。
Detailed description of the invention
Below by specific embodiment, the purpose of this utility model being described in further detail, embodiment can not repeat one by one at this, but therefore embodiment of the present utility model is not defined in following example。
As depicted in figs. 1 and 2, a kind of based on comings PT fuel injector device for detecting sealability, including left plate and right plate, it is horizontally parallel two guide rails 4 being arranged between described left plate and right plate, it is provided with the first promotion device 9 moved back and forth along guide rail 4 from left to right successively across ground between two guide rails 4, second promotes device 10 and a support arrangement 6, also include for installing adjustment valve, Pressure gauge, the installation panel 1 of bubble cup, logical many screws connect left plate and right plate, it is connected to pressure tester 5 between described first promotion device 9 and the second promotion device 10, pressure tester 5 is used for the thrust detecting between screw rod and fuel injector；Being provided with the screw rod connecting the first promotion device 9 on described left plate and adjust assembly 3 and for installing the range finding mounting bracket 2 of range unit, described range unit is amesdial, with the displacement of amesdial chaining pin valve。
Described right plate is provided with rocker-type hold down gag 7, described second promotion device 10 and hold down gag 7 is relatively provided with the hold-down head for clamping fuel injector, the guide rail 4 between described second promotion device 10 and a support arrangement 6 is cased with compression spring 11。
Specifically, described screw rod adjusts screw rod, the rotary handle that the nut that assembly 3 includes being fixed on left plate coordinates with described nut thread, one end of described screw rod connects the first promotion device 9, the other end connects rotary handle, rotates screw rod adjustment the first promotion device 9 by rotary handle and controls the position of oil-fuel injector needle-valve。
Specifically, sliding sleeve that described rocker-type hold down gag 7 includes being fixed on right plate and the push rod that described sliding sleeve is slidably matched, L-shaped rocking bar 8, connecting plate, described connecting plate one end and right plate are hinged, the other end and L-shaped rocking bar 8 corner are hinged, one end of described push rod connects the minor face free end of hold-down head, the other end and L-shaped rocking bar 8 and is hinged。
The installation panel 1 of the present embodiment is mainly used to install adnexaes such as regulating valve, Pressure gauge, bubble cup；Range finding mounting bracket 2 is used for installing amesdial, with the displacement of amesdial chaining pin valve；Adjust assembly 3 and include rotary handle and screw rod etc., by rotary handle, the position of metering pin valve；Guide rail 4 is used for limiting and adjusts assembly 3, pressure tester 5, a support arrangement 6, the position of fuel injector and adjustment direction；Pressure tester 5 is used for the thrust detecting between screw rod and fuel injector；Prop up support arrangement 6 to be used for fuel injector is installed；Hold down gag 7 is used for compressing fuel injector, the position of fixing fuel injector, it is prevented that it rocks。During detection, fuel injector is arranged on support arrangement 6 place together with sleeve, regulates hold down gag 7 and adjust assembly 3 by fuel injector clamping。Open air supply valve, utilize and adjust assembly, and observe amesdial, manometric numerical value, plunger fuel injector within, needle-valve are adjusted ad-hoc location, according to design gas circuit carry out supplying, gas collection, the sealing surface of fuel injector is carried out sealing propertytest。
The sealing propertytest of fuel injector mainly includes the detection of the seal tightness test of the seal tightness test of oil input channel ball check valve, slide block and plunger body, needle-valve and the seal tightness test of needle-valve body sealing surface, the seal tightness test of back oil road ball check valve and needle-valve eroded area length。
For above-mentioned situation, what adopt that the present embodiment provides penetrates oil collection device based on comings PT fuel injector test experience, and its concrete operations are as follows:
1, the seal tightness test of oil input channel ball check valve sealing surface
Gas circuit to be measured: spray orifice-ball check valve-fuel feeding oilhole, by having detected whether that bubble produces, it is determined that ball check valve whether good seal。
Now, the ball check valve of oil input channel is closed, i.e. sealing state, by judging whether fuel feeding oilhole place has bubble to occur, it is determined that the quality of the sealing of ball check valve。There is bubble to produce, the ball check valve seal failure of oil input channel is described；Bubble-free produces, and illustrates that oil input channel ball check valve sealing is good, fuel injector gas circuit such as Fig. 3。
2, the seal tightness test of slide block and plunger body sealing surface
Gas circuit to be measured is: timing oil duct fuel feed hole-slide block and plunger body sealing surface-oil leak hole, by having detected whether that bubble produces, it is determined that slide block and plunger body sealing surface whether good seal。
Now, sealing function between slide block and plunger body, should be played, thus the fuel oil that timing oil pocket Gong comes in is established fluid column, play the effect changing injection timing。By judging whether oil leak hole place has bubble to produce, it is determined that the quality of the sealing between slide block and plunger body。If there being bubble to produce, sealing surface seal failure is described；If bubble-free produces, sealing surface seal failure, fuel injector gas circuit such as Fig. 4 are described。
3, the seal tightness test of needle-valve and needle-valve body sealing surface
Gas circuit to be measured is: spray orifice-needle-valve and needle-valve body sealing surface-back oil road, by having detected whether that bubble produces, it is determined that needle-valve and needle-valve body sealing surface whether good seal。
The high injection pressure of fuel injector is owing to the depressed fast of needle-valve produces, and therefore, plays sealing function between needle-valve and needle-valve body。When detecting the sealing between oil-fuel injector needle-valve and needle-valve body, first oil-fuel injector needle-valve is pressed onto the end the about 1mm that bounces back, face of needle seating is lifted off a seat, now, supply to nozzle opening, whether have whether the sealing that gas produces to judge between needle-valve and needle-valve body lost efficacy by detecting spill port。If there being bubble to produce, sealing surface seal failure is described；If bubble-free produces, sealing surface good seal, fuel injector gas circuit such as Fig. 5 are described。
4, the seal tightness test of back oil road ball check valve sealing surface
Gas circuit to be measured is: spill port-back oil road ball check valve-oil-recovery tank-oil spout oil duct oil input channel-oil spout oil duct fuel feed hole, by having detected whether that bubble produces, it is determined that back oil road ball check valve sealing surface whether good seal。It should be noted that needed the bead by the ball check valve of oil input channel to remove before doing this test so that oil input channel is reversely unimpeded。
Now, fuel feed hole by the oil-recovery tank connection on needle-valve, only has the ball check valve in back oil road to play sealing function with spill port in path。By judging whether fuel feed hole has bubble to produce, it is determined that the quality of the sealing of the ball check valve of back oil road。If there being bubble, sealing surface seal failure is described；If bubble-free, sealing surface good seal, fuel injector gas circuit such as Fig. 6 are described。
This apparatus structure is simple, easy to operate, accuracy of detection is high。
Above-described embodiment of the present utility model is only for clearly demonstrating this utility model example, and is not the restriction to embodiment of the present utility model。For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description。Here without also cannot all of embodiment be given exhaustive。All any amendment, equivalent replacement and improvement etc. made within spirit of the present utility model and principle, should be included within this utility model scope of the claims。
Claims (5)
1. one kind based on comings PT fuel injector device for detecting sealability, it is characterized in that: include left plate and right plate, it is horizontally parallel two guide rails (4) being arranged between described left plate and right plate, it is provided with the first promotion device (9) moved back and forth along guide rail (4) from left to right successively across ground between two guide rails (4), second promotes device (10) and a support arrangement (6), described first promotes device (9) and second to promote is connected to pressure tester (5) between device (10), described left plate is provided with the screw rod connecting the first promotion device (9) and adjusts assembly (3) and for installing the range finding mounting bracket (2) of range unit, described right plate is provided with rocker-type hold down gag (7), described second promotion device (10) and hold down gag (7) are relatively provided with the hold-down head for clamping fuel injector, guide rail (4) between described second promotion device (10) and a support arrangement (6) is cased with compression spring (11)。
2. one according to claim 1 is based on comings PT fuel injector device for detecting sealability, it is characterized in that: described screw rod adjusts screw rod, the rotary handle that the nut that assembly (3) includes being fixed on left plate coordinates with described nut thread, one end of described screw rod connects the first promotion device (9), the other end connects rotary handle, rotates screw rod by rotary handle and regulates the position of the first promotion device (9) control oil-fuel injector needle-valve。
3. one according to claim 1 is based on comings PT fuel injector device for detecting sealability, it is characterized in that: sliding sleeve that described rocker-type hold down gag (7) includes being fixed on right plate and the push rod that described sliding sleeve is slidably matched, L-shaped rocking bar (8), connecting plate, described connecting plate one end and right plate are hinged, the other end and L-shaped rocking bar (8) corner are hinged, one end of described push rod connects the minor face free end of hold-down head, the other end and L-shaped rocking bar (8) and is hinged。
4. one according to claim 1 is based on comings PT fuel injector device for detecting sealability, it is characterised in that: also including for installing the installation panel (1) regulating valve, Pressure gauge, bubble cup, logical many screws connect left plate and right plate。
5. one according to any one of claim 1 to 4 is based on comings PT fuel injector device for detecting sealability, it is characterised in that: described range unit is amesdial。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521076577.7U CN205333260U (en) | 2015-12-19 | 2015-12-19 | Based on cummins PT sprayer leakproofness detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521076577.7U CN205333260U (en) | 2015-12-19 | 2015-12-19 | Based on cummins PT sprayer leakproofness detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205333260U true CN205333260U (en) | 2016-06-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521076577.7U Withdrawn - After Issue CN205333260U (en) | 2015-12-19 | 2015-12-19 | Based on cummins PT sprayer leakproofness detection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205333260U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105424292A (en) * | 2015-12-19 | 2016-03-23 | 华南理工大学 | Sealing detection device based on Commins PT oil sprayer |
-
2015
- 2015-12-19 CN CN201521076577.7U patent/CN205333260U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105424292A (en) * | 2015-12-19 | 2016-03-23 | 华南理工大学 | Sealing detection device based on Commins PT oil sprayer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20160622 Effective date of abandoning: 20180413 |