CN214040637U - Detection tool structure for fuel pipeline flow of turbojet engine - Google Patents
Detection tool structure for fuel pipeline flow of turbojet engine Download PDFInfo
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- CN214040637U CN214040637U CN202022902669.3U CN202022902669U CN214040637U CN 214040637 U CN214040637 U CN 214040637U CN 202022902669 U CN202022902669 U CN 202022902669U CN 214040637 U CN214040637 U CN 214040637U
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Abstract
The utility model provides a detect frock structure for turbojet engine fuel pipeline flow belongs to liquid engine fuel system flow detection frock design technical field. The tool structure with reliable structure and higher compatibility is provided for testing the consistency of the flow of the fuel pipeline of the turbojet engine. The detection tool structure comprises a top cover, a test tube, a sealing plug, a test tube nest, an oil drain plate and an oil groove; the upper end of the umbrella surface of the sealing plug is designed into a round table-shaped structure, the center of the bottom surface of the test tube (2) is provided with a through hole with a chamfer, and the shape of the through hole is embedded with the outer contour of the sealing plug; the test tube nest is of a cylindrical nest structure and is provided with a plurality of annularly and uniformly distributed test tube holes, and each annularly and uniformly distributed test tube hole corresponds to the outer diameter and the number of oil nozzles of a fuel pipeline of one type; the utility model discloses reduced thin wall pipe part deflection, guaranteed the test accuracy, reduced the volume of volatilizing that fuel and air contact lead to, the unexpected loss that causes when having avoided the manual work to empty the test tube fuel.
Description
Technical Field
The utility model relates to a detect frock structure for turbojet engine fuel pipeline flow belongs to liquid engine fuel system flow detection frock design technical field.
Background
In recent years, research institutes and colleges at home and abroad begin to explore the application of various types of turbojet engines on platforms such as missile patrol, target drone, unmanned aerial vehicle and the like. The flow of the fuel pipeline of the turbojet engine is one of the key technical indexes that 100% of turbojet engines of different types need to be detected. The fuel pipeline is one of key components in the turbojet engine and plays an important role in conveying oil to the inside of the engine. The main structure of the fuel pipelines of different types of turbojet engines is an annular stainless steel tube structure, and 6-16 fuel nozzles are uniformly distributed on the annular structure. When the fuel oil pump works, fuel oil is pumped out from the oil tank, flows into the annular stainless steel pipe structure of the fuel oil pipe, is uniformly sprayed out from the oil nozzles uniformly distributed on the structure of the fuel oil pipe, and is ignited. Because the operating temperature of the turbojet engine is high, the heat released during fuel combustion is enough to melt high-temperature alloy, and therefore the fuel combustion point needs to be controlled in the region of the center to avoid engine parts so as to protect the engine parts from being ablated and melted. Once each fuel sprayer of fuel pipeline work appears unusually, exist one to two oil spouts too much or too little and can lead to the fuel oil burning point to take place the skew, if light then influences engine life, if heavy then directly burns out the engine. Therefore, the fuel pipeline flow detection is very important. At present, the flow detection of a fuel pipeline of a turbojet engine generally takes aviation fuel as a medium, and measures the flow of each fuel injection nozzle of the fuel pipeline in unit time under a certain pressure condition. The corresponding number of test tubes with the same specification can be prepared, flow testing is carried out on each oil nozzle at the same time, the test is stopped after any test tube is filled with fuel oil, and the difference of the fuel oil amount in each test tube is read at the moment, so that whether the pipeline flow meets the requirement or not is judged.
The test of traditional turbojet engine fuel pipeline flow uniformity needs to prepare the test-tube rack and the test tube quantity of corresponding external diameter according to the fuel pipe of the different external diameters of different models and be used for connecing the fuel, fixes the fuel pipe with the clip simultaneously and carries on spacingly to it. The disadvantages present therein are as follows: the clamp fixes the fuel pipe, which easily causes the deformation of thin-wall pipe parts and influences the test accuracy and the part quality; different external diameters fire oil pipe and test-tube rack not general, and the test-tube rack only can provide fixed test tube function, still need the manual work to empty test tube fuel one by one after the test at every turn, and work efficiency is low, and fuel consumption rate is big.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a detect frock structure for turbojet engine fuel pipeline flow does, and each type turbojet engine fuel pipeline flow carries out the uniformity and detects. The tool structure is compatible with the sizes of various types of domestic turbojet engine fuel pipelines, and meanwhile, the tool structure is reliable in structure, simple and convenient to operate and high in compatibility and is provided for testing the flow consistency of the turbojet engine fuel pipelines.
The utility model aims at realizing through the following technical scheme: a detection tool structure for the flow of a fuel pipeline of a turbojet engine is characterized by comprising a top cover, a test tube, a sealing plug, a test tube nest, an oil drainage plate and an oil groove; the sealing plug is an umbrella-shaped structure part, the upper end of the umbrella surface of the sealing plug is designed into a circular truncated cone-shaped structure, the bottom of the circular truncated cone-shaped structure corresponds to the center of the bottom surface of the test tube, and the tail end of the umbrella handle protrudes out of the bottom of the test tube nest; the test tube is of a circular tube structure, the center of the bottom surface of the test tube is provided with a through hole with a chamfer, and the shape of the through hole is embedded with the outer contour of the sealing plug; the oil drain plate is of a disc-shaped structure, the center of the oil drain plate is provided with a limiting cylindrical boss which is positioned below the sealing plug and the test tube and is arranged on the wall of the test tube nest, the top cover is of a disc-shaped structure, and the center of the top cover is provided with a threaded through hole which is matched with an external threaded column above the test tube nest; the test tube nest is of a cylindrical nest structure and is provided with a plurality of annularly and uniformly distributed test tube holes, and each annularly and uniformly distributed test tube hole corresponds to the outer diameter and the number of oil nozzles of a fuel pipeline of one type; an oil drain opening is designed below each annular uniformly distributed test tube hole.
Further, the symmetry axis has the mirror image breach on the annular base of test tube nest, and the installation leaks the oiled-plate.
Further, the upper end of the oil groove is provided with symmetrical lug-shaped bulges which are connected with the test tube nest.
Further, the center of the oil drainage plate 5 is provided with a 3mm limiting cylindrical boss.
Furthermore, the diameter of the boss of the limiting cylinder at the center of the oil drainage plate is smaller than the diameter of the innermost ring of the test tube holes annularly and uniformly distributed in the test tube nest.
Furthermore, each annular uniformly-distributed test tube hole of the test tube nest is designed into a countersunk through hole structure.
Further, the contact department of sealing plug round platform column structure lower extreme and test tube draining port falls 45 oblique angles, and its bottom through-hole of test tube falls 45 oblique angles with the bottom surface, two oblique angle cooperations in front and back.
The utility model discloses beneficial effect: the utility model discloses simple structure, effect are reliable, low cost, compatible strong, reduced thin wall pipe part deflection, have guaranteed the test accuracy, have reduced the volume of volatilizing that fuel and air contact lead to, have avoided the manual work to empty the unexpected loss that causes when the test tube fuel, improved work efficiency the while reduced the fuel lost.
The internal test tube nest is designed into a cylindrical nest structure, annular uniformly distributed test tube holes with various sizes are reserved on the test tube nest for adjusting the position of a test tube, and the structural design of the test tube nest is compatible with the external diameters and the number of oil nozzles of fuel pipelines of various types of 9kg, 16kg, 23kg, 40kg, 60kg and 80kg so as to adapt to the detection requirements of the fuel pipelines of various types of turbojet engines; the top cover structure replaces a traditional clamp structure to fix the fuel pipeline, the contact area is increased, meanwhile, the pressure intensity on the unit area is reduced, the deformation of the thin-wall pipe part is well reduced, and the testing accuracy is guaranteed. The sealing plug, let out oil board and oil groove structure and replaced traditional manual work and emptyd the interior fuel of test tube one by one, reduced the volume of volatilizing that fuel and air contact lead to, the unexpected loss that causes when having avoided the manual work to emptys the test tube fuel has reduced the loss volume of fuel when having improved work efficiency.
Drawings
FIG. 1 is a schematic view of the external structure of a fuel pipeline of a turbojet engine of a certain type during flow test;
FIG. 2 is a cross-sectional view of the internal structure of the device for testing the flow of the fuel pipeline of a turbojet engine of a certain type;
FIG. 3 is a sectional view of the internal structure of the oil drain after the test is completed;
FIG. 4 is a schematic view of a sealing plug;
FIG. 5 is a schematic view of a half-section of the bottom of the test tube;
FIG. 6 is a schematic illustration of the fuel piping.
In the figure, 1-top cover; 2-test tube; 3-sealing the plug; 4-test tube nest; 5-oil drain plate; 6-oil groove.
Detailed Description
The patent content is further described below with reference to the figures and examples.
The utility model provides a detect frock structure for turbojet engine fuel pipeline flow, includes: the test tube comprises a top cover, a test tube, a sealing plug, a test tube nest, an oil discharge plate and an oil groove;
the top cover is of a circular structure, the inner ring wall is provided with threads which are matched with the external threads on the top of the central column of the test tube nest and used for screwing down the top cover to compress the part to be tested after the position of the part to be tested is adjusted, and limiting and fixing are carried out;
the test tube is a glass or transparent plastic material thin-wall tube structure, and the center of the bottom surface of the test tube is provided with a chamfer through hole, the shape of the chamfer through hole is embedded with the outline of the sealing plug, so that the sealing performance of the test tube is good when the sealing plug is forced to deform under the influence of the gravity of fuel in the test tube.
The sealing plug is a mushroom-shaped structure part, the umbrella-shaped structure at the upper end of the sealing plug is made of rubber materials, and the shape of the sealing plug is embedded with the chamfered through hole on the bottom surface of the test tube, so that the sealing performance of the test tube is good when the sealing plug is stressed and deformed under the influence of the gravity of fuel in the test tube; its lower extreme umbrella stick structure is made by stainless steel material, plays reinforcing sealing plug overall quality, improves the effect of sealing reliability, needs manual control draining board upstroke simultaneously when draining in the testing process, and the jack-up sealing plug reaches the purpose of draining, and lower extreme and draining board contact department design also can prolong frock life for stainless steel material.
The test tube nest is a cylindrical nest structure, the structural design of the test tube nest is compatible with the outer diameters and the number of oil nozzles of fuel pipelines of various types of 9kg, 16kg, 23kg, 40kg, 60kg and 80kg, and therefore annular uniformly distributed test tube holes of various sizes are reserved on the test tube nest for adjusting the positions of test tubes so as to meet the detection requirements. Each cyclic annular equipartition test tube hole all designs for countersunk head through-hole structure in the nest, can guarantee that each test tube depth of insertion is unanimous, and each cyclic annular equipartition test tube hole below designs the draining port, guarantees that the sealing plug is by the fuel outflow after draining board jack-up. The bottom of the test tube nest is provided with an annular base which can be connected with an oil groove, and a mirror gap is designed on the annular base by taking the central axis as a reference for installing an oil drainage plate.
The oil drainage plate is of a cylindrical piece structure, a 3mm limiting boss is designed at the center of the oil drainage plate, so that the boss is firstly contacted with the test tube nest for limiting when the oil drainage plate travels upwards, and other parts cannot be attached to an oil drainage port below the test tube nest to influence the oil drainage efficiency; the design of draining board both sides ear protrusion handle stretches out from the breach on the test tube nest ring form base during the assembly to supply the tester to control when the operation and let out the oil board stroke from top to bottom.
The oil groove is a bowl-shaped joint made of glass or transparent plastic materials, symmetrical lug-shaped bulges are designed at the upper end of the oil groove and used for limiting when being connected with the test tube nest, and the stability of the whole tool is ensured during testing; the oil groove inner cavity is designed into an oil storage space, and a lateral through hole is reserved on the side wall of the lowest point of the bottom of the oil groove and used for installing a valve to discharge fuel.
Working process
When the test is started, the top cover is screwed out upwards; placing test tubes corresponding to the external diameter of the fuel pipeline with the model to be tested and the number of the fuel nozzles into corresponding test tube holes; putting a corresponding number of sealing plugs into the test tube, and requiring the umbrella handle to be inserted into an oil drainage port at the bottom of the test tube; the fuel oil pipeline is placed above the test tube, and the top cover is screwed in from top to bottom after each fuel spray nozzle is aligned to the corresponding test tube, so that the fuel oil pipe is compressed to limit. After the oil circuit is connected, starting the test equipment, adjusting the fuel pressure and starting the test; when the liquid level of any test tube reaches the upper limit, the test equipment is closed, and whether the flow consistency of each oil nozzle of the tested part meets the requirement or not is observed; screwing out the top cover upwards, and taking out the part to be measured; lifting the oil draining plate by two hands, jacking up the sealing plug in the test tube by the oil draining plate, allowing the fuel oil in the test tube to flow downwards from the oil draining port into the oil groove for temporary storage, and discharging the oil draining plate after the fuel oil flows completely; and repeating the steps until the oil tank reaches the upper capacity limit or the test is finished, and opening an oil drain valve at the bottom of the oil tank to drain the fuel oil.
Examples
As shown in fig. 1, the tooling structure comprises a top cover 1; a test tube 2; a sealing plug 3; a test tube nest 4; an oil drain plate 5; an oil sump 6.
As shown in fig. 5, the test tube 2 is a circular tube structure with a through hole at the bottom, and the bottom through hole and the bottom surface are chamfered by 45 degrees so that the test tube can be tightly attached to the sealing plug 3 to play a sealing role under specific conditions;
as shown in fig. 2 and 3, the oil drain plate 5 is a disc-shaped structure, and a limiting cylindrical boss is arranged at the center of the oil drain plate, so that when the oil drain plate moves upwards to drain oil, the limiting cylindrical boss is firstly contacted with the center of the bottom of the test tube nest 4 without an oil drain port, thereby preventing the oil drain plate 5 from contacting with the oil drain port at the bottom of the test tube nest 4 to cause unsmooth oil drainage and simultaneously ensuring that the sealing plug 3 is not extruded and damaged;
as shown in fig. 5, the top cover 1 is a disc-shaped structure, the center of the top cover 1 is provided with a threaded through hole, the threaded through hole is matched with the external threaded column above the test tube nest 4, and after a part to be tested is placed into the test tube nest, the top cover 1 is screwed in downwards, so that the part is clamped by the test tube 2 and the top cover 1 up and down, and therefore the position is limited.
The test tube nest is cylindrical nest structure, and the external diameter and the glib talker quantity of the compatible multiple model of its structural design fuel oil pipeline, so reserve the cyclic annular equipartition test tube hole of multiple size on the test tube nest and be used for adjusting the test tube position to adapt to and detect the demand. Each cyclic annular equipartition test tube hole all designs for countersunk head through-hole structure in the nest, can guarantee that each test tube depth of insertion is unanimous, and each cyclic annular equipartition test tube hole below designs the draining port, guarantees that the sealing plug is by the fuel outflow after draining board jack-up. The bottom of the test tube nest is provided with an annular base which can be connected with an oil groove, and a mirror gap is designed on the annular base by taking the central axis as a reference for installing an oil drainage plate.
Claims (10)
1. A detection tool structure for the flow of a fuel pipeline of a turbojet engine is characterized by comprising a top cover (1), a test tube (2), a sealing plug (3), a test tube nest (4), an oil drainage plate (5) and an oil groove (6);
the sealing plug is an umbrella-shaped structure part, the upper end of the umbrella surface of the sealing plug is designed into a circular truncated cone-shaped structure, the bottom of the circular truncated cone-shaped structure corresponds to the center of the bottom surface of the test tube, and the tail end of the umbrella handle protrudes out of the bottom of the test tube nest;
the test tube (2) is of a circular tube structure, the center of the bottom surface of the test tube is provided with a through hole with a chamfer, and the shape of the through hole is embedded with the outer contour of the sealing plug;
the oil drain plate (5) is a limiting cylindrical boss designed at the center of the disc-shaped structure, is positioned below the sealing plug and the test tube (2) and is arranged on the wall of the test tube nest,
the top cover is of a disc-shaped structure, and a threaded through hole is designed in the center of the top cover and is matched with an external threaded column above the test tube nest (4);
the test tube nest is of a cylindrical nest structure and is provided with a plurality of annularly and uniformly distributed test tube holes, and each annularly and uniformly distributed test tube hole corresponds to the outer diameter and the number of oil nozzles of a fuel pipeline of one type; an oil drain opening is designed below each annular uniformly distributed test tube hole.
2. The tool structure for detecting the flow of the fuel pipeline of the turbojet engine according to claim 1, wherein the test tube nest annular base is provided with mirror notches in a central axis of symmetry, and an oil drain plate is installed on the mirror notches.
3. The tool structure for detecting the flow of the fuel pipeline of the turbojet engine according to claim 1, wherein the upper end of the oil groove is provided with symmetrical lug-shaped bulges connected with the test tube nest.
4. The tool structure for detecting the flow of the fuel pipeline of the turbojet engine according to claim 1, wherein a 3mm limiting cylindrical boss is designed at the center of the oil drain plate (5).
5. The detection tool structure for the fuel pipeline flow of the turbojet engine according to claim 1, wherein the diameter of a limiting cylindrical boss at the center of the oil drainage plate is smaller than the diameter of the innermost ring of the test tube holes annularly and uniformly distributed in the test tube nest.
6. The tool structure for detecting the flow of the fuel pipeline of the turbojet engine according to claim 1, wherein each annular and uniformly distributed test tube hole of the test tube nest is designed to be a countersunk through hole structure.
7. The tool structure for detecting the flow of the fuel pipeline of the turbojet engine according to claim 1, wherein a 45-degree oblique angle is formed at the contact position of the lower end of the sealing plug truncated cone-shaped structure and the oil drainage port of the test tube, a 45-degree oblique angle is formed between the through hole at the bottom of the test tube (2) and the bottom surface of the test tube, and the front oblique angle and the rear oblique angle are matched.
8. The tool structure for detecting the flow of the fuel pipeline of the turbojet engine according to claim 1, wherein the annular base at the bottom of the test tube nest is connected with an oil groove.
9. The tool structure for detecting the flow of the fuel pipeline of the turbojet engine as claimed in claim 1, wherein the umbrella-shaped structure at the upper end of the sealing plug is made of rubber, and the umbrella-shaped structure at the lower end of the sealing plug is made of stainless steel.
10. The tool structure for detecting the flow of the fuel pipeline of the turbojet engine as claimed in claim 1, wherein the oil groove is made of glass or a transparent plastic material.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022902669.3U CN214040637U (en) | 2020-12-04 | 2020-12-04 | Detection tool structure for fuel pipeline flow of turbojet engine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022902669.3U CN214040637U (en) | 2020-12-04 | 2020-12-04 | Detection tool structure for fuel pipeline flow of turbojet engine |
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| CN214040637U true CN214040637U (en) | 2021-08-24 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114923696A (en) * | 2022-03-30 | 2022-08-19 | 中国民用航空飞行学院 | Unmanned aerial vehicle micro turbojet engine measurement and control console and measurement and control method |
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2020
- 2020-12-04 CN CN202022902669.3U patent/CN214040637U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114923696A (en) * | 2022-03-30 | 2022-08-19 | 中国民用航空飞行学院 | Unmanned aerial vehicle micro turbojet engine measurement and control console and measurement and control method |
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