CN103557106A - Oil injecting ring flow testing device and use method thereof - Google Patents
Oil injecting ring flow testing device and use method thereof Download PDFInfo
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- CN103557106A CN103557106A CN201310578869.XA CN201310578869A CN103557106A CN 103557106 A CN103557106 A CN 103557106A CN 201310578869 A CN201310578869 A CN 201310578869A CN 103557106 A CN103557106 A CN 103557106A
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Abstract
The invention relates to the field of motor repair, in particular to an oil injecting ring flow testing device and a use method thereof. The oil injecting ring flow testing device mainly comprises a positioning mechanism, a connecting structure and an oil circuit conveying mechanism; one end of the connecting structure is communicated with an oil inlet pipe of the testing device, and the other end of the connecting structure is connected to an oil inlet spigot joint of part oil injection rings mounted above the positioning mechanism; the oil circuit conveying mechanism is connected to the lower part of the positioning mechanism. According to the invention, a special positioning manner is adopted, so that two parts can be clamped at one time; when the testing of a first part is completed, the testing of a second part can be realized without disassembly; an oil outlet is designed to be a dedicated oil receiving channel to enable return oil to accurately arrival at a measuring instrument, so that not only is the testing efficiency improved, but also the testing result is accurate; the accuracy problem of flow testing results of similar oil injection ring parts can be solved; as the dedicated flow testing device is adopted, the product quality is improved, the labor intensity of workers is relieved, and the production efficiency is improved.
Description
Technical field
The present invention relates to engine overhaul field, be specially a kind of injection loop device for testing flow and using method thereof.
Background technique
Injection loop is because diameter is large, and on injection loop part, machining hole quantity is many, and its structural feature limits to a certain extent uses special-purpose fixture, never the special purpose device of test, adopts ancient manual operations to complete, and labor intensity is large, test result is untrue, affects quality of product.
Because of injection loop structure special, when carrying out flow inspection, there is no special-purpose device, during test, adopt artificial method in some auxiliary units of its Increasing exports, each test cost plenty of time, in the process of the test of being everlasting, occur that fuel oil is from auxiliary unit spillover, because personal factor impact causes the untrue of test result.For addressing the above problem, need the testing apparatus of design specialized.
Summary of the invention
The object of the present invention is to provide a kind of injection loop device for testing flow and using method thereof, solve similar injection loop part flow test result accuracy problem, adopt special-purpose device for testing flow, improve the quality of products, alleviate labor strength, enhance productivity.
Technological scheme of the present invention is:
A kind of injection loop device for testing flow, this device comprises: positioning means, linkage structure and oil circuit conveying equipment, one end of linkage structure is communicated with the oil inlet pipe of testing apparatus, the part injection loop oil-feed that the other end of linkage structure is installed above with positioning means connects mouth and is connected, below positioning means, connect oil circuit conveying equipment, specific as follows:
The oil drip pan that positioning means adopts is disc structure, and oil drip pan is as main body frame, and other all mechanisms all places with mounted thereto;
Linkage structure is provided with two card lobes, pressure ring, oil-feeds and connects mouth, nut, the oil-feed of first nut being inserted in to injection loop part connects on mouth, with two card lobes, clamp caliber below the bulb of oil inlet pipe and more carefully locate, and entangle with pressure ring, with nut bottom end face, be close to the oil inlet pipe bulb of part;
Oil circuit conveying equipment is provided with and connects oil nozzle, bellows, clip, the one end and the oil drip pan that connect oil nozzle are threaded connection, connect the other end of oil nozzle and bellows by clip connected, the outlet of bellows is communicated with the drip tank of testing apparatus, and by the receipts oil mass of drip tank, determines the flow of injection loop.
Described injection loop device for testing flow, oil drip pan material selection metallic aluminium for alleviating the weight of oil drip pan, has circular groove on oil drip pan, adopts hollow structure, and with weight reduction, convenient operation person load and unload.
Described injection loop device for testing flow, injection loop part is fixed on oil drip pan, and the nozzle opening of injection loop part is aimed at the receipts oilhole of oil drip pan, connects in the tapped hole that oil nozzle is screwed into oil drip pan, bellows with clip with connect oil nozzle and be connected, bellows is put into the drip tank of testing apparatus.
Described injection loop device for testing flow, two part injection loop I and injection loop II are installed on oil drip pan, and injection loop I is positioned at the outer ring of injection loop II; The oil inlet pipe of injection loop I, injection loop II is placed in the U-groove bevel of oil drip pan, the ear seat of injection loop I, injection loop II is placed in the positioning hole of oil drip pan, the nozzle opening of injection loop I and injection loop II is corresponding one by one with the cone shape hole on oil drip pan, and ear seat is fixed by screws in positioning hole.
Described injection loop device for testing flow, for the safety of process of the test, bellows will be selected anti-riot metal tube; In order to avoid connecing, when oil nozzle and oil drip pan screw up by screw thread, screw thread to occur bonding, connects No. 45 steel of oil nozzle material selection, and thread surface is carried out to zinc-plated and chemical passivation; Oil-feed is connect to mouth and be connected with the oil inlet pipe of testing apparatus, after an injection loop component test completes, carry out the connection of another injection loop part.
The using method of described injection loop device for testing flow, concrete steps are as follows:
1) oil drip pan is arranged on the support of testing apparatus, the base of oil drip pan is fixed on after support, then injection loop I and two parts of injection loop II are installed on oil drip pan, injection loop I is positioned at the outer ring of injection loop II; During installation, the oil inlet pipe of injection loop I, injection loop II is put into the U-groove bevel of oil drip pan, the ear seat of injection loop I, injection loop II is put into the positioning hole of oil drip pan, at this moment injection loop I and injection loop II are just corresponding one by one with the cone shape hole on oil drip pan, and with screw, ear seat are fixed in positioning hole below splash pan;
2) by connecing the screwed one end of oil nozzle, be screwed in the tapped hole below splash pan successively, injection loop I is screwed into and connects oil nozzle, injection loop II need to be screwed into and connect oil nozzle, bellows is being inserted in respectively to the tapered end that connects oil nozzle, and tighten with clip, finally bellows is put into the drip tank that testing apparatus is corresponding;
3) be installed into oil pipe, adopt card lobe, pressure ring that oil inlet pipe bulb is fixed, then the switching of the oil inlet pipe of realization and testing apparatus; Nut is inserted in to the oil inlet pipe bulb place of injection loop part, with card lobe, the oil inlet pipe circular groove of injection loop is fixed, afterwards pressure ring is set on card lobe, nut is close to pressure ring and with fixing oil-feed, connects the bulb of mouth; Oil-feed is connect to one end of mouth and the oil inlet pipe of testing apparatus is connected, and screw up with a wrench, oil-feed connects the other end of mouth and the oil inlet pipe of injection loop is connected, and tightens;
4) firing test device, whether each joint of inspection injection loop part and frock, have oil leakage phenomenon; If have, readjust or tighten connection part, until joint seals completely, can test;
5) when test, first checks flow and the distribution of injection loop I, after pass the test, minute lower nut, takes out pressure ring, card lobe, and the oil-feed that injection loop II is installed connects mouth, repeats 3), 4) the whole working procedure of step finish, and unload injection loop II.
The using method of described injection loop device for testing flow, for alleviating the load-bearing of support, hangs oil drip pan on the cantilever support of testing apparatus chain hois with iron chains.
The using method of described injection loop device for testing flow, later test, only need to carry out 3), 4) step changes injection loop part.
Advantage of the present invention and beneficial effect are:
1, the present invention is directed to the Special testing device of injection loop flow test research and design, the problem existing according to injection loop flow test, adopt special orientation type, can realize two parts of clamped one time, complete when first component test, need not dismantle the test that just can realize second part, oil outlet is designed to the special-purpose oily passage that connects, finally make oil return accurately arrive in measurement instrument, not only can improve test efficiency like this, and make test result accurate.Key of the present invention is how to realize the installation of injection loop part, location and sealing, how to make oil return can arrive in shared measurement instrument.
2, the present invention, by the practical application of testing apparatus, well solves flow test problem, obtains satisfied effect, convenient to use by this device of practical application, is worthy of popularization.
3, adopt testing apparatus of the present invention, simultaneously can shape be identical but injection loop part that size is different assembles by two, after an injection loop component test completes, can carry out the test of another injection loop part at once, avoid repeatedly repeatedly loading and unloading.Use this device, alleviate labor strength, improve the quality of products, shorten the manufacture cycle, can realize lean High-efficient Production.
In a word, apparatus of the present invention are installed two injection loop parts simultaneously, can successively test, and avoid repeatedly repeatedly loading and unloading, thereby have shortened the manufacture cycle, have reduced workman's labor intensity, have improved manufacturing efficiency; This device, is all back in the measuring cup of testing apparatus fuel oil, has avoided the impact of personal factor in process of the test, realizes the authenticity of test result.
Accompanying drawing explanation
Fig. 1 (a)-Fig. 1 (e) is injection loop device for testing flow structural representation of the present invention.Wherein, Fig. 1 (a) is plan view; Fig. 1 (b) is the C-C revolved sectional view of Fig. 1 (a); Fig. 1 (c) is the D-D revolved sectional view of Fig. 1 (a); Fig. 1 (d) is the E-E revolved sectional view of Fig. 1 (a); Fig. 1 (e) is the B-B revolved sectional view of Fig. 1 (a).
Fig. 2 (a)-Fig. 2 (f) is injection loop device for testing flow oil drip pan schematic diagram of the present invention.Wherein, Fig. 2 (a) is plan view; Fig. 2 (b) is the A-A revolved sectional view of Fig. 2 (a); Fig. 2 (c) is the C-C revolved sectional view of Fig. 2 (a); Fig. 2 (d) is the D-D revolved sectional view of Fig. 2 (a); Fig. 2 (e) is the B-B revolved sectional view of Fig. 2 (a); Fig. 2 (f) is the E-E revolved sectional view of Fig. 2 (a).
Fig. 3 (a)-Fig. 3 (f) connects mouth structure schematic diagram for oil-feed of the present invention.Wherein, Fig. 3 (a) is plan view; Fig. 3 (b) is the partial enlarged drawing of Fig. 3 (a); Fig. 3 (c) is the A-A sectional view of Fig. 3 (a); Fig. 3 (d) is ring structure figure in Fig. 3 (a); Fig. 3 (e) is card lobe plan view in Fig. 3 (a); Fig. 3 (f) is Fig. 3 (a) card lobe right elevation.
Fig. 4 is oil return apparatus connected system structural representation of the present invention, that is: the A-A sectional view of Fig. 1 (a).
In figure, 1 oil-feed connects mouth; 2 nuts; 3 pressure rings; 4 card lobes; 5 oil drip pans; 6 connect oil nozzle; 7 bellowss; 8 clips; 9 screws; 10 injection loop I; 11 injection loop II; 12 circular grooves; 13 oil inlet pipes; 14 bulbs; 15 cone shape holes; 16 ear seats; 17 positioning holes; 18, U-groove bevel; 19 ear seat grooves.
Embodiment
As shown in Fig. 1 (a)-Fig. 1 (e), Fig. 2 (a)-Fig. 2 (f), Fig. 3 (a)-Fig. 3 (f), Fig. 4, injection loop device for testing flow of the present invention mainly comprises: positioning means, linkage structure and oil circuit conveying equipment, one end of linkage structure is communicated with the oil inlet pipe of testing apparatus, the other end of linkage structure connects mouth 1 with part injection loop oil-feed above positioning means and is connected, below positioning means, connect oil circuit conveying equipment, specific as follows:
The oil drip pan 5 that positioning means adopts is disc structure, during design, consider anti-riot, loss of weight and operability, oil drip pan 5 material selection metallic aluminiums, but oil drip pan diameter is large, for alleviating the weight of oil drip pan, on oil drip pan 5, have many circular grooves 12, adopt hollow structure, with weight reduction, convenient operation person load and unload.Oil drip pan 5 is as main body frame, and other all mechanisms all place with mounted thereto, sees Fig. 2 (a)-Fig. 2 (f).
Linkage structure connects mouth 1, nut 2(inipple by two card lobe 4, pressure ring 3, oil-feeds) etc. form, first by nut 2(inipple) oil-feed of being inserted in injection loop part connects on mouth 1, the bulb 14 of clamping oil inlet pipe 13 with card lobe 4 below caliber is more carefully located, and entangle with pressure ring 3, with nut 2(inipple) bottom end face is close to the oil inlet pipe bulb 14 of part, sees Fig. 3 (a)-Fig. 3 (f).
Oil circuit conveying equipment forms by connecing oil nozzle 6, bellows 7, clip 8 etc., the one end and the oil drip pan 5 that connect oil nozzle 6 are threaded connection, the other end that connects oil nozzle 6 is connected by clip 8 with bellows 7, the outlet of bellows 7 is communicated with the drip tank of testing apparatus, can guarantee the smooth and easy of oil-way system, and by the receipts oil mass of drip tank, determine the flow of injection loop, see Fig. 4.
Injection loop part is fixed on oil drip pan 5, the nozzle opening of injection loop part is aimed at the receipts oilhole of oil drip pan 5, connect in the tapped hole that oil nozzle 6 is screwed into oil drip pan 5, then by bellows 7 use clips 8 with connect oil nozzle 6 and be connected, bellows 7 is put into the drip tank of testing apparatus.For fear of occurring that in test, oil return is not smooth, there is fluid to return out phenomenon from drip tank, bellows 7 length are moderate, can not there is bending phenomenon, allow fluid flow into smoothly in the drip tank of testing apparatus, for the safety of process of the test, bellows will be selected anti-riot metal tube.For avoiding two to connect that when oil nozzle 6 screws up by screw thread with oil drip pan 5, screw thread to occur bonding, connect No. 45 steel of oil nozzle 6 material selection, and thread surface is carried out to zinc-plated and chemical passivation.Oil-feed is connect to mouth 1 and be connected with the oil inlet pipe 13 of testing apparatus, after an injection loop component test completes, can carry out the connection of another injection loop part, avoid repeatedly repeatedly filling journey coordination, reliable, see Fig. 1 (a)-Fig. 1 (e).
As shown in Fig. 1 (a)-Fig. 1 (e), Fig. 2 (a)-Fig. 2 (f), Fig. 3 (a)-Fig. 3 (f), Fig. 4, the course of action of testing apparatus of the present invention is as follows:
1) oil drip pan 5 is arranged on the support of testing apparatus, for alleviating the load-bearing of support, with iron chains, oil drip pan 5 is hung on the cantilever support of chain hois on testing apparatus, the base of oil drip pan 5 is fixed on after support, injection loop I 10 (having 96 holes) and two parts of injection loop II 11 (having 24 holes) are installed on oil drip pan 5, injection loop I 10 is positioned at the outer ring of injection loop II 11 again.During installation, the oil inlet pipe 13 of injection loop (injection loop I 10, injection loop II 11) is put into the U-groove bevel 18 of oil drip pan 5, the ear seat 16 of injection loop I 10, injection loop II 11 is put into seven positioning holes 17 of oil drip pan 5, at this moment injection loop I 10 (having 96 holes) and injection loop II 11 (having 24 holes) are just corresponding one by one with the cone shape hole 15 on oil drip pan 5, and with screw 9, ear seat 16 is fixed in positioning hole 17 below splash pan 5, see Fig. 2 (a)-Fig. 2 (f).Oil drip pan 5 evenly offers eight ear seat grooves 19 in edge, and ear seat groove 19, for other eight ear seats of injection loop I 10 bottoms are installed, makes injection loop I 10 further be fixed on oil drip pan 5, sees Fig. 1 (a)-Fig. 1 (e).
2) by connecing the screwed one end of oil nozzle 6, be screwed in splash pan 5 tapped hole below successively, injection loop I 10 need to be screwed into 96 and connect oil nozzle 6, injection loop II 11 need to be screwed into 24 and connect oil nozzle 6, bellows 7 is being inserted in respectively to the tapered end that connects oil nozzle 6, and tighten with clip 8, finally bellows 7 is put into the drip tank that testing apparatus is corresponding.After this step is complete, oil recovery system installation, carries out this step with regard to not needing later, only needs renewal part (injection loop) just passable during test, sees Fig. 4.
3) be installed into oil pipe 13.Because oil inlet pipe 13 ends of injection loop are spherical, be not threaded, adopt card lobe 4, pressure ring 3 that bulb 14 is fixing, then realize with the oil inlet pipe of testing apparatus and transferring.By nut 2(inipple) oil inlet pipe bulb 14 places of being inserted in injection loop part, with card lobe 4, the oil inlet pipe of injection loop 13 circular grooves are fixed, afterwards pressure ring 3 is set on card lobe 4, by nut 2(inipple) be close to pressure ring 3 and with fixing oil-feed, connect the bulb 14 of mouth 1, see Fig. 3 (a)-Fig. 3 (f).Oil-feed is connect to one end of mouth 1 and the oil inlet pipe of testing apparatus is connected, and screw up with a wrench, oil-feed connects the other end of mouth 1 and the oil inlet pipe of injection loop 13 is connected, and tightens, and sees Fig. 1 (a)-Fig. 1 (e).
4) firing test device, low pressure operation, whether each joint of inspection injection loop part and frock, have oil leakage phenomenon.If have, readjust or tighten connection part, until joint seals completely, can test.
5) while testing, first check flow and the distribution of injection loop I 10, will carry out flow inspection, but on testing apparatus panel, only have 44 measuring containers because this injection loop I 10 has 96 holes, this injection loop I 10 will could all complete through 3 tests.After pass the test, minute lower nut 2(inipple), take out pressure ring 3, card lobe 4, the oil-feed that injection loop II 11 is installed connects mouth 1, repeats 3), 4) the whole working procedure of step finish, and unload injection loop II 11.Later test, only need to carry out 3), 4) to change injection loop part just passable for step.
Embodiment's result shows, apparatus of the present invention adopt structure of two injection loop component sharings, these two injection loop parts are fixed on oil drip pan base simultaneously, at oil drip pan upper-end surface processing cone shape hole corresponding to each nozzle opening, play good drainage, thread mill drilling below oil drip pan base, bellows is fixed on and is connect on oil nozzle with clip, finally bellows is put into successively to the drip tank of testing apparatus, weight for alleviator, clearance spaces at device, has some circular grooves.Apparatus of the present invention have shortened the manufacture cycle by two, have reduced workman's labor intensity.And this device can all drain into the fuel oil flowing out from injection loop in the measurement instrument of testing apparatus, avoid having fluid loss in process of the test, measurement result is completely true.
Claims (8)
1. an injection loop device for testing flow, it is characterized in that, this device comprises: positioning means, linkage structure and oil circuit conveying equipment, one end of linkage structure is communicated with the oil inlet pipe of testing apparatus, the part injection loop oil-feed that the other end of linkage structure is installed above with positioning means connects mouth and is connected, below positioning means, connect oil circuit conveying equipment, specific as follows:
The oil drip pan that positioning means adopts is disc structure, and oil drip pan is as main body frame, and other all mechanisms all places with mounted thereto;
Linkage structure is provided with two card lobes, pressure ring, oil-feeds and connects mouth, nut, the oil-feed of first nut being inserted in to injection loop part connects on mouth, with two card lobes, clamp caliber below the bulb of oil inlet pipe and more carefully locate, and entangle with pressure ring, with nut bottom end face, be close to the oil inlet pipe bulb of part;
Oil circuit conveying equipment is provided with and connects oil nozzle, bellows, clip, the one end and the oil drip pan that connect oil nozzle are threaded connection, connect the other end of oil nozzle and bellows by clip connected, the outlet of bellows is communicated with the drip tank of testing apparatus, and by the receipts oil mass of drip tank, determines the flow of injection loop.
2. according to injection loop device for testing flow claimed in claim 1, it is characterized in that, oil drip pan material selection metallic aluminium for alleviating the weight of oil drip pan, has circular groove on oil drip pan, adopts hollow structure, and with weight reduction, convenient operation person load and unload.
3. according to injection loop device for testing flow claimed in claim 1, it is characterized in that, injection loop part is fixed on oil drip pan, the nozzle opening of injection loop part is aimed at the receipts oilhole of oil drip pan, connect in the tapped hole that oil nozzle is screwed into oil drip pan, bellows with clip with connect oil nozzle and be connected, bellows is put into the drip tank of testing apparatus.
4. according to injection loop device for testing flow claimed in claim 3, it is characterized in that, two part injection loop I and injection loop II are installed on oil drip pan, and injection loop I is positioned at the outer ring of injection loop II; The oil inlet pipe of injection loop I, injection loop II is placed in the U-groove bevel of oil drip pan, the ear seat of injection loop I, injection loop II is placed in the positioning hole of oil drip pan, the nozzle opening of injection loop I and injection loop II is corresponding one by one with the cone shape hole on oil drip pan, and ear seat is fixed by screws in positioning hole.
5. according to injection loop device for testing flow claimed in claim 3, it is characterized in that, for the safety of process of the test, bellows will be selected anti-riot metal tube; In order to avoid connecing, when oil nozzle and oil drip pan screw up by screw thread, screw thread to occur bonding, connects No. 45 steel of oil nozzle material selection, and thread surface is carried out to zinc-plated and chemical passivation; Oil-feed is connect to mouth and be connected with the oil inlet pipe of testing apparatus, after an injection loop component test completes, carry out the connection of another injection loop part.
6. a using method for injection loop device for testing flow claimed in claim 1, is characterized in that, concrete steps are as follows:
1) oil drip pan is arranged on the support of testing apparatus, the base of oil drip pan is fixed on after support, then injection loop I and two parts of injection loop II are installed on oil drip pan, injection loop I is positioned at the outer ring of injection loop II; During installation, the oil inlet pipe of injection loop I, injection loop II is put into the U-groove bevel of oil drip pan, the ear seat of injection loop I, injection loop II is put into the positioning hole of oil drip pan, at this moment injection loop I and injection loop II are just corresponding one by one with the cone shape hole on oil drip pan, and with screw, ear seat are fixed in positioning hole below splash pan;
2) by connecing the screwed one end of oil nozzle, be screwed in the tapped hole below splash pan successively, injection loop I is screwed into and connects oil nozzle, injection loop II need to be screwed into and connect oil nozzle, bellows is being inserted in respectively to the tapered end that connects oil nozzle, and tighten with clip, finally bellows is put into the drip tank that testing apparatus is corresponding;
3) be installed into oil pipe, adopt card lobe, pressure ring that oil inlet pipe bulb is fixed, then the switching of the oil inlet pipe of realization and testing apparatus; Nut is inserted in to the oil inlet pipe bulb place of injection loop part, with card lobe, the oil inlet pipe circular groove of injection loop is fixed, afterwards pressure ring is set on card lobe, nut is close to pressure ring and with fixing oil-feed, connects the bulb of mouth; Oil-feed is connect to one end of mouth and the oil inlet pipe of testing apparatus is connected, and screw up with a wrench, oil-feed connects the other end of mouth and the oil inlet pipe of injection loop is connected, and tightens;
4) firing test device, whether each joint of inspection injection loop part and frock, have oil leakage phenomenon; If have, readjust or tighten connection part, until joint seals completely, can test;
5) when test, first checks flow and the distribution of injection loop I, after pass the test, minute lower nut, takes out pressure ring, card lobe, and the oil-feed that injection loop II is installed connects mouth, repeats 3), 4) the whole working procedure of step finish, and unload injection loop II.
7. according to the using method of injection loop device for testing flow claimed in claim 6, it is characterized in that, for alleviating the load-bearing of support, with iron chains, oil drip pan is hung on the cantilever support of testing apparatus chain hois.
8. according to the using method of injection loop device for testing flow claimed in claim 6, it is characterized in that later test only need to carry out 3), 4) step changes injection loop part.
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| CN201310578869.XA CN103557106B (en) | 2013-11-18 | 2013-11-18 | Oil injecting ring flow testing device and use method thereof |
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Cited By (4)
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| CN107763654A (en) * | 2017-09-28 | 2018-03-06 | 中国航发动力股份有限公司 | A kind of flow adjustment method of compact-type built-in fuel injection ring |
| CN109027210A (en) * | 2018-10-11 | 2018-12-18 | 重庆齿轮箱有限责任公司 | A kind of disc and splash lubrication structure of gear-box |
| CN110823466A (en) * | 2019-11-19 | 2020-02-21 | 中国航发贵州黎阳航空动力有限公司 | Hydraulic test device for thrust augmentation main pipe fuel spray rod of aircraft engine |
| CN114235428A (en) * | 2021-12-30 | 2022-03-25 | 北京航天三发高科技有限公司 | Test bed and use method thereof |
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| CN114235428A (en) * | 2021-12-30 | 2022-03-25 | 北京航天三发高科技有限公司 | Test bed and use method thereof |
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|---|---|
| CN103557106B (en) | 2015-07-22 |
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Address after: 110043 Dong TA street, Dadong District, Shenyang, Liaoning Province, No. 6 Patentee after: Chinese Hangfa Shenyang Liming Aero engine limited liability company Address before: 110043 Dong TA street, Dadong District, Shenyang, Liaoning Province, No. 6 Patentee before: Liming Aeroplane Engine (Group) Co., Ltd., Shenyang City |