CN211573673U - Measuring device for a dual fuel injector - Google Patents
Measuring device for a dual fuel injector Download PDFInfo
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- CN211573673U CN211573673U CN202020102322.8U CN202020102322U CN211573673U CN 211573673 U CN211573673 U CN 211573673U CN 202020102322 U CN202020102322 U CN 202020102322U CN 211573673 U CN211573673 U CN 211573673U
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Abstract
The utility model belongs to the technical field of internal combustion engine ejector measuring devices, and relates to a measuring device for a dual-fuel ejector, which comprises a transition block, wherein the upper part of the transition block is hermetically connected with a connecting rod mounting block through a sealing device, the bottom surface of the transition block is tightly connected with a supporting block, and the dual-fuel ejector is mounted on the connecting rod mounting block; the dual-fuel injector is provided with a first fuel inlet, the injection part of the dual-fuel injector extends into the vertical inner hole of the transition block, first fuel nozzles are uniformly distributed on the injection part of the dual-fuel injector in a circumferential shape, and a first fuel outlet communicated with the first fuel nozzles is formed in the transition block. The device is convenient to install, can independently measure the injection quantity and the injection rule of two fuels, and realizes the performance measurement function of a dual-fuel injection product.
Description
Technical Field
The utility model belongs to the technical field of internal-combustion engine sprayer measuring device, a measuring device for dual fuel sprayer is related to.
Background
With the adjustment of national energy structure and the improvement of emission requirements, diesel oil is used as a high-pressure in-cylinder direct injection technology of single fuel, the combustion efficiency of an internal combustion engine is low, the traditional internal combustion engine taking gasoline and diesel oil as combustion media is gradually reduced, natural gas is rich in national and global resources, and the natural gas can be gradually used as a substitute fuel of the diesel oil to be applied to the automobile market.
The internal combustion engine of the dual-fuel system improves the temperature in a cylinder by injecting the second fuel (diesel oil) in advance and combusting, and then injects the first fuel (natural gas) to combust and do work, so that the combustion efficiency can be improved, the oil consumption can be reduced, harmful emissions can be reduced, and the internal combustion engine is a cleaner and more economic internal combustion engine technical scheme.
In order to test the performance of the dual-fuel injector product, a set of measuring device is designed so as to collect and detect the injected first fuel and the injected second fuel separately, and ensure the accurate performance of various calibration tests.
Disclosure of Invention
The utility model provides a to above-mentioned problem, a measuring device for dual fuel injector is provided, and the device simple to operate can independently measure the injection volume and the injection law of two kinds of fuel, has realized the performance measurement function of dual fuel injection product.
According to the technical scheme of the utility model: a measuring device for a dual fuel injector characterized by: the dual-fuel injector is characterized by comprising a transition block, wherein the upper part of the transition block is in sealing connection with a connecting rod mounting block through a sealing device, the bottom surface of the transition block is fixedly connected with a supporting block, and the connecting rod mounting block is provided with a dual-fuel injector;
the dual-fuel injector is provided with a first fuel inlet, the injection part of the dual-fuel injector extends into the vertical inner hole of the transition block, first fuel nozzles are uniformly distributed on the injection part of the dual-fuel injector in a circumferential shape, and the transition block is provided with a first fuel outlet communicated with the first fuel nozzles;
the connecting rod mounting block is also provided with a second fuel inlet connecting rod and a second fuel outlet connecting rod, wherein an inlet channel arranged on the second fuel inlet connecting rod is communicated with a second fuel inlet on the dual-fuel injector, an outlet channel arranged on the second fuel outlet connecting rod is communicated with a corresponding outlet on the dual-fuel injector, and a second fuel nozzle is arranged on the lower end surface of an injection part of the dual-fuel injector;
the second fuel nozzle is tightly pressed on the isolating gasket, the isolating gasket is supported on the upper end surface of the adapter, and the second fuel nozzle is communicated with an inner hole in the isolating gasket and an inner hole in the adapter;
and the transition block is provided with a pressure sensor, and the bottom surface of the supporting block is connected with a single-time injection instrument.
As a further improvement of the present invention, the sealing device comprises a sealing ring and a sealing block, the lower portion of the connecting rod mounting block is provided with a receiving cavity, the upper end surface of the transition block is provided with an annular cylinder portion extending vertically upwards, the annular cylinder portion is arranged in the receiving cavity in a matching manner, and the outer surface of the annular cylinder portion is attached to the inner wall of the receiving cavity;
the sealing block is arranged in the annular cylinder body, the outer conical surface of the injection part of the dual-fuel injector is tightly pressed on the inner conical surface of the sealing block, and the lower boss of the sealing ring is arranged in the annular cylinder body and tightly pressed on the upper end surface of the sealing block.
As a further improvement of the utility model, the transition block is fixedly connected with the supporting block through a set screw.
As a further improvement, the upper end face of the supporting block is fastened and connected with the supporting column, the supporting column is worn out from the connecting rod installation block and extends upwards, the upper part of the supporting column is connected with the device body pressing plate, and the device body pressing plate is locked and fixed above the connecting rod installation block through the hexagonal flange face nut.
As a further improvement, the connecting rod mounting block is provided with a locking screw which locks and fixes the support post.
As a further improvement, set up first O type circle between the inner wall of sealing ring and the injection portion surface of dual fuel injector, set up second O type circle between sealing ring and the sealed piece, set up fifth O type circle between the bottom surface of sealed piece and the transition piece.
As a further improvement, be equipped with third O type circle between adapter and the single injection appearance, set up fourth O type circle between adapter and the transition piece.
As a further improvement of the present invention, the dual fuel injector is provided with two electromagnetic valves to control the injection of the first fuel and the injection of the second fuel to be alternately performed.
As a further improvement, the second fuel outlet connecting rod is fastened on the connecting rod mounting block through a second cushion block and a second pressing plate, the second fuel outlet connecting rod is fastened on the connecting rod mounting block through a first pressing plate and a first cushion block, a spherical bearing group is further arranged between the first cushion block and the connecting rod mounting block, and the second fuel outlet connecting rod runs through the spherical bearing group.
The technical effects of the utility model reside in that: the utility model discloses the product can be sealed two kinds of fuel separately at the during operation, independent test, and nimble changeable, easy operation.
The utility model has novel, compact and reasonable structure, the first fuel injected by the dual-fuel injector is stored in the sealing cavity formed by the sealing block and the transition block outside the isolating washer, and the first fuel is prevented from leaking to the outside or the second fuel by the conical surface sealing of the nozzle valve body and the sealing block of the dual-fuel injector and the sealing of the isolating washer and the fifth O-shaped ring; in order to better ensure the sealing of the first fuel, a sealing ring, a first O-shaped ring and a second O-shaped ring are additionally arranged, the second fuel injected by the dual-fuel injector flows into the adapter through an inner hole of the isolating gasket, so that the second fuel enters the single-injection instrument to detect the injection amount and the injection rule, the second fuel is prevented from leaking to the outside or the first fuel through the sealing of the isolating gasket, the thickness of the isolating gasket is divided into different stages, the dual-fuel injector can be selected as required, and the whole set of mechanism is flexible, variable, safe and reliable.
The structure of the inflow and outflow of the second fuel of the dual-fuel injector is novel and easy to adjust, and the second fuel inlet connecting rod and the second fuel outlet connecting rod of the dual-fuel injector are installed in a conical surface sealing mode, so that the dual-fuel injector is reliable in installation and has no leakage; the spherical bearing group is arranged, so that the second fuel outlet connecting rod can be adjusted up and down, and the problem that the oil return hole is vertically moved to influence the installation and use when the installation size or pressing force of a product is deviated is solved.
Drawings
Fig. 1 is a top view of the present invention.
Fig. 2 is a sectional view taken along line a-a in fig. 1.
Fig. 3 is a sectional view taken along line B-B in fig. 1.
Fig. 4 is a perspective view of the present invention.
Detailed Description
The following description will further describe embodiments of the present invention with reference to the accompanying drawings.
In fig. 1 to 4, the fuel injector comprises a connecting rod mounting block 1, a receiving cavity 1-1, a sealing ring 2, a first O-ring 3, a second O-ring 4, a sealing block 5, a set screw 6, a support column 7, a transition block 8, an annular cylinder body 8-1, a support block 9, an adapter 10, a sealing washer 11, a third O-ring 12, a fourth O-ring 13, a spacer washer 14, a fifth O-ring 15, a locking screw 16, a body pressure plate 17, a hexagonal flange face nut 18, a second fuel outlet connecting rod 19, a spherical bearing group 20, a first pressure plate 21, a first cushion block 22, a pressure sensor switching tool 23, a second fuel inlet connecting rod 24, a second pressure plate 25, a second dual-fuel cushion block 26, a screw 27, a first fuel inlet 28, a first fuel outlet 29, an injector 30, a nozzle portion 30-1, a pressure sensor 31, a single injection instrument 32 and the like.
As shown in FIGS. 1-3, the utility model relates to a measuring device for dual fuel injector, including transition piece 8, sealing device and connecting rod installation piece 1 sealing connection are passed through to the upper portion of transition piece 8, and the bottom surface fastening connection supporting shoe 9 of transition piece 8 installs dual fuel injector 30 on the connecting rod installation piece 1.
The dual-fuel injector 30 is provided with a first fuel inlet 28, the injection part of the dual-fuel injector 30 extends into the vertical inner hole of the transition block 8, first fuel nozzles are uniformly distributed on the injection part of the dual-fuel injector 30 in a circumferential shape, and the transition block 8 is provided with a first fuel outlet 29 communicated with the first fuel nozzles.
The connecting rod mounting block 1 is further provided with a second fuel inlet connecting rod 24 and a second fuel outlet connecting rod 19, wherein an inlet channel arranged on the second fuel inlet connecting rod 24 is communicated with a second fuel inlet on the dual-fuel injector 30, an outlet channel arranged on the second fuel outlet connecting rod 19 is communicated with a corresponding outlet on the dual-fuel injector 30, and a second fuel nozzle is arranged on the lower end face of an injection part of the dual-fuel injector 30.
The second fuel nozzle is pressed on the isolating gasket 14, the isolating gasket 14 is supported on the upper end face of the adapter 10, and the second fuel nozzle is communicated with an inner hole on the isolating gasket 14 and an inner hole on the adapter 10; the transition block 8 is provided with a pressure sensor 31, and the bottom surface of the supporting block 9 is connected with a single-shot injection instrument 32.
The sealing device comprises a sealing ring 2 and a sealing block 5, wherein the lower part of the connecting rod mounting block 1 is provided with an accommodating cavity 1-1, the upper end surface of the transition block 8 is provided with an annular barrel part 8-1 which extends vertically upwards, the annular barrel part 8-1 is arranged in the accommodating cavity 1-1 in a matched mode, and the outer surface of the annular barrel part 8-1 is attached to the inner wall of the accommodating cavity 1-1.
The sealing block 5 is arranged in the annular cylinder body part 8-1, the outer conical surface of the nozzle valve body of the dual-fuel injector 30 is tightly pressed on the inner conical surface of the sealing block 5, and the lower boss of the sealing ring 2 is arranged in the annular cylinder body part 8-1 and tightly pressed on the upper end surface of the sealing block 5.
The transition block 8 is fixedly connected with the supporting block 9 through a set screw 6, the upper end face of the supporting block 9 is fixedly connected with the pillar 7, the pillar 7 penetrates out of the connecting rod mounting block 1 and extends upwards, the upper portion of the pillar 7 is connected with a device body pressing plate 17, and the device body pressing plate 17 is locked and fixed above the connecting rod mounting block 1 through a hexagonal flange face nut 18.
Set up locking screw 16 on connecting rod installation piece 1, locking screw 16 locks the pillar 7 fixedly, sets up first O type circle 3 between the inner wall of sealing ring 2 and the injection portion surface of dual fuel injector 30, sets up second O type circle 4 between sealing ring 2 and the seal block 5, sets up fifth O type circle 15 between the bottom surface of seal block 5 and transition block 8.
A third O-ring 12 is arranged between the adapter 10 and the single-shot injection meter 32, a fourth O-ring 13 is arranged between the adapter 10 and the transition block 8, and the dual-fuel injector 30 is provided with two solenoid valves to control the injection of the first fuel and the injection of the second fuel to be alternately performed.
The second fuel inlet connecting rod 24 is fastened on the connecting rod mounting block 1 through a second cushion block 26 and a second pressure plate 25, the second fuel outlet connecting rod 19 is fastened on the connecting rod mounting block 1 through a first pressure plate 21 and a first cushion block 22, a spherical bearing group 20 is further arranged between the first cushion block 22 and the connecting rod mounting block 1, and the second fuel outlet connecting rod 19 penetrates through the spherical bearing group 20.
The dual fuel injector 30 of the present invention is a novel dual fuel cylinder internal direct injection injector disclosed in the chinese patent with patent number 2018111094903, and the single injection instrument 32 is a mature product in the prior art.
As shown in fig. 1-4, in operation, the second fuel enters the dual fuel injector 30 through the second fuel inlet connecting rod 24 and flows out of the second fuel outlet connecting rod 19, and the first fuel flows in from the first fuel inlet 28 and flows out of the first fuel outlet 29 after injection; both the first fuel and the second fuel are injected from the nozzle of the dual fuel injector 30, as disclosed in the above solution: the nozzle part is provided with a first fuel nozzle and a second fuel nozzle, wherein the first fuel is sprayed out from the first fuel nozzle, and the second fuel is sprayed out from the second fuel nozzle. The injected second fuel is measured by connecting the isolating gasket 14 and the adapter 10 into the single-injection meter 32, and the injected first fuel and the injected second fuel are prevented from mixing or leaking out through the sealing of the isolating gasket 14 and the third O-ring 12 and the fourth O-ring 13 on the adapter 10; after the first fuel is injected, the first fuel is stored in a sealing cavity formed by the sealing block 5 and the transition block 8 outside the isolating gasket 14, the first fuel and the second fuel are prevented from mixing or leaking through the sealing block 5, the conical surface seal of the product nozzle valve body and the sealing of the fifth O-shaped ring 15 and the isolating gasket 14, and the sealing ring 2, the first O-shaped ring 3 and the second O-shaped ring 4 are additionally arranged above the sealing block 5 to prevent the first fuel from leaking; the first fuel enters the gas flow meter from the first fuel outlet 29 on the transition block 8 for detecting the gas flow, and the transition block 8 is provided with a high-response gas pressure sensor 31 for detecting the injection law of the first fuel, so that the simultaneous measurement of the injection quantity and the injection law of the first fuel and the second fuel is realized; the second fuel inlet connecting rod 24 is pressed under the action of the second pressure plate 25, the second pressing block 26 and the screw 27, the second fuel outlet connecting rod 19 is pressed under the action of the second pressure plate 25, the second pressing block 22 and the screw 27, and the second fuel outlet connecting rod 19 can be adjusted up and down under the action of the spherical bearing group 20, so that the installation is convenient.
The utility model has novel, compact and reasonable structure, the isolating washer 14 not only has the function of collecting the second fuel but also has the function of isolating the first fuel, the thickness of the isolating washer is divided into 4 grades, and the isolating washer is selected according to requirements, thereby avoiding that the second fuel can not be accurately injected into the inner hole of the isolating washer 14 due to the height change of the positions of the spray holes caused by various reasons; in the process, once the isolating gasket 14 is damaged, only replacement is needed, and the method is simple and convenient; the dual-fuel injector and the sealing block are sealed in a conical surface sealing mode, and the nozzle part of the dual-fuel injector is a thin-wall part, so that the sealing block is made of two materials, namely polyformaldehyde and brass, in order to protect a product from being pressed and deformed; in order to better ensure that natural gas is not leaked, a sealing ring is additionally arranged above the sealing block, and the sealing block is sealed by an O-shaped ring, so that a two-stage sealing mode is safer and more reliable.
The utility model discloses can detect two kinds of fuels and first fuel simultaneously and be the injection quantity and the oil spout law that gaseous second fuel is liquid to keep apart first fuel and second fuel, independently measure its injection quantity and injection law.
Claims (9)
1. A measuring device for a dual fuel injector characterized by: the double-fuel injector is characterized by comprising a transition block (8), wherein the upper part of the transition block (8) is in sealing connection with a connecting rod mounting block (1) through a sealing device, the bottom surface of the transition block (8) is fixedly connected with a supporting block (9), and the connecting rod mounting block (1) is provided with a double-fuel injector (30);
a first fuel inlet (28) is formed in the dual-fuel injector (30), the injection part of the dual-fuel injector (30) extends into a vertical inner hole of the transition block (8), first fuel nozzles are uniformly distributed on the injection part of the dual-fuel injector (30) in a circumferential shape, and first fuel outlets (29) communicated with the first fuel nozzles are formed in the transition block (8);
the connecting rod mounting block (1) is further provided with a second fuel inlet connecting rod (24) and a second fuel outlet connecting rod (19), wherein an inlet channel arranged on the second fuel inlet connecting rod (24) is communicated with a second fuel inlet on the dual-fuel injector (30), an outlet channel arranged on the second fuel outlet connecting rod (19) is communicated with a corresponding outlet on the dual-fuel injector (30), and a second fuel nozzle is arranged on the lower end face of an injection part of the dual-fuel injector (30);
the second fuel nozzle is pressed on the isolating gasket (14), the isolating gasket (14) is supported on the upper end face of the adapter (10), and the second fuel nozzle is communicated with an inner hole in the isolating gasket (14) and an inner hole in the adapter (10);
and a pressure sensor (31) is installed on the transition block (8), and the bottom surface of the supporting block (9) is connected with a single-shot injection instrument (32).
2. The measurement arrangement for a dual fuel injector as claimed in claim 1, characterized in that: the sealing device comprises a sealing ring (2) and a sealing block (5), an accommodating cavity (1-1) is formed in the lower portion of the connecting rod mounting block (1), an annular cylinder portion (8-1) extending vertically upwards is arranged on the upper end face of the transition block (8), the annular cylinder portion (8-1) is arranged in the accommodating cavity (1-1) in a matched mode, and the outer surface of the annular cylinder portion (8-1) is attached to the inner wall of the accommodating cavity (1-1);
the sealing block (5) is arranged in the annular cylinder body part (8-1), the outer conical surface of a nozzle assembly of the dual-fuel injector (30) is pressed on the inner conical surface of the sealing block (5), and the lower boss of the sealing ring (2) is arranged in the annular cylinder body part (8-1) and pressed on the upper end surface of the sealing block (5).
3. The measurement arrangement for a dual fuel injector as claimed in claim 1, characterized in that: the transition block (8) is fixedly connected with the supporting block (9) through a set screw (6).
4. The measurement arrangement for a dual fuel injector as claimed in claim 1, characterized in that: the upper end face of the supporting block (9) is fixedly connected with a strut (7), the strut (7) penetrates out of the connecting rod mounting block (1) and extends upwards, a device body pressing plate (17) is connected to the upper portion of the strut (7), and the device body pressing plate (17) is locked and fixed above the connecting rod mounting block (1) through a hexagonal flange face nut (18).
5. The measurement arrangement for a dual fuel injector as claimed in claim 4, characterized in that: the connecting rod mounting block (1) is provided with a locking screw (16), and the pillar (7) is locked and fixed by the locking screw (16).
6. A measurement arrangement for a dual fuel injector as claimed in claim 2 wherein: a first O-shaped ring (3) is arranged between the inner wall of the sealing ring (2) and the outer surface of a nozzle of the dual-fuel injector (30), a second O-shaped ring (4) is arranged between the sealing ring (2) and the sealing block (5), and a fifth O-shaped ring (15) is arranged between the bottom surface of the sealing block (5) and the transition block (8).
7. The measurement arrangement for a dual fuel injector as claimed in claim 1, characterized in that: a third O-shaped ring (12) is arranged between the adapter (10) and the single-injection instrument (32), and a fourth O-shaped ring (13) is arranged between the adapter (10) and the transition block (8).
8. The measurement arrangement for a dual fuel injector as claimed in claim 1, characterized in that: the dual fuel injector (30) is provided with two solenoid valves to control the injection of the first fuel to alternate with the injection of the second fuel.
9. The measurement arrangement for a dual fuel injector as claimed in claim 1, characterized in that: the second fuel inlet connecting rod (24) is fastened on the connecting rod mounting block (1) through a second cushion block (26) and a second pressure plate (25), the second fuel outlet connecting rod (19) is fastened on the connecting rod mounting block (1) through a first pressure plate (21) and a first cushion block (22), a spherical bearing group (20) is further arranged between the first cushion block (22) and the connecting rod mounting block (1), and the second fuel outlet connecting rod (19) penetrates through the spherical bearing group (20) to be arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020102322.8U CN211573673U (en) | 2020-01-16 | 2020-01-16 | Measuring device for a dual fuel injector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020102322.8U CN211573673U (en) | 2020-01-16 | 2020-01-16 | Measuring device for a dual fuel injector |
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| Publication Number | Publication Date |
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| CN211573673U true CN211573673U (en) | 2020-09-25 |
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| CN202020102322.8U Active CN211573673U (en) | 2020-01-16 | 2020-01-16 | Measuring device for a dual fuel injector |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111058985A (en) * | 2020-01-16 | 2020-04-24 | 无锡威孚高科技集团股份有限公司 | Measuring device for a dual fuel injector |
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2020
- 2020-01-16 CN CN202020102322.8U patent/CN211573673U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111058985A (en) * | 2020-01-16 | 2020-04-24 | 无锡威孚高科技集团股份有限公司 | Measuring device for a dual fuel injector |
| CN111058985B (en) * | 2020-01-16 | 2024-05-17 | 无锡威孚高科技集团股份有限公司 | Measuring device for dual fuel injector |
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