CN103616044A

CN103616044A - Single-point low-blockage-ratio sensing part for performance testing

Info

Publication number: CN103616044A
Application number: CN201310587414.4A
Authority: CN
Inventors: 赵宇; 万利; 张荫鳌; 王家骞; 唐成亮
Original assignee: Shenyang Liming Aero Engine Group Co Ltd
Current assignee: Shenyang Liming Aero Engine Group Co Ltd
Priority date: 2013-11-19
Filing date: 2013-11-19
Publication date: 2014-03-05

Abstract

The invention discloses a single-point low-blockage-ratio sensing part for performance testing. The single-point low-blockage-ratio sensing part is used for testing parameters such as temperature and pressure of high-rotating-speed complex fluid machines such as aero-engines. Due to the fact that the single-point low-blockage-ratio sensing part is characterized by being compact in internal structure, complex in flow and high in temperature, pressure and rotating speed, the sensing part which runs in the high-rotating-speed complex fluid machines is required to be small in size, and meanwhile, needs to bear huge pneumatic loads, heating power loads and mechanical loads. The single-point low-blockage-ratio sensing part enables a temperature measuring element and a pressure measuring element to be combined together; namely the two measuring elements are installed in one positioning block so that the temperature and the pressure can be measured at the same time under the environment that the temperature is below 500 DEG C, and an inducing pipe of the sensing part and the temperature measuring element need to be installed windward. Compared with a common sensing part, the single-point low-blockage-ratio sensing part has the advantages of being few in use number, accurate in test data, low in measuring error and the like, can guarantee working strength completely, and can obtain the parameters of temperature and pressure at the same time in the same ring surface and the same cross section.

Description

The little blockage ratio detector probe of a kind of single-point for performance test

Technical field

The invention belongs to measurement performance apparatus, mainly relate to the temperature of exerciser performance test, the test of pressure parameter, particularly relate to the little blockage ratio detector probe of a kind of single-point for performance test.

Background technology

The complex fluid machinery of aeromotor rotating speed needs to use detector probe to measure in it, to flow temperature in engineering test, the aerodynamic parameters such as pressure, because its inner structure is compact, complex flow and high temperature, high pressure, high-revolving feature, work in when its inner detector probe requires reduced size, also to bear pneumatic greatly, heating power and mechanical load, once lose efficacy, will cause very large loss, and conventional detector probe is due to its intrinsic large scale, not only can not meet exerciser testing requirement, also can be because high blockage ratio is that calibration tape carrys out risk, test result and test original intention are run in the opposite direction, in exerciser experiment work, interior flow field circumstance complication, each cross section performance parameter is different, to measure accurately performance data, need a plurality of pressure, temperature detector probe to participate in test, can make the flow field air-flow in exerciser passage cause disturbance or loss, though conventional temperature and pressure detector probe can record same anchor ring data simultaneously, can not record same cross-section data simultaneously, and cause the result that blockage ratio and test number error are large, caused larger error often to the performance calculating in later stage.

Because passage is little, need the parameter of measurement many, must repeated multiple times test, caused the waste of time and the energy, and temperature and pressure is that in performance test testing time is the most frequently, and the conventional detector probe of Split type structure form can not meet the testing requirements of exerciser, the characteristic service conditions actual with it such as the stress of prediction and serviceable life differ all larger, also have no idea its structure to carry out reasonably optimizing.

Summary of the invention

The problem existing for prior art, the invention provides the little blockage ratio detector probe of a kind of single-point for performance test, temperature measuring equipment and pressure tester are arranged in a locating piece, in the working environment below 500 ℃, temperature and pressure can be measured simultaneously, compare with conventional detector probe, there is usage quantity few, test data is accurate, the advantages such as measuring error is little, and detector probe can record same cross-section data temperature and pressure simultaneously, the present invention realizes according to following scheme, the little blockage ratio detector probe of a kind of single-point with performance test comprises pressure tester and temperature measuring equipment,

Described pressure tester comprises and causes pipe 1 and pole 4, the middle part of described pole 4 tube walls has opening, one end of sleeve pipe 8 tilts to be fixedly connected with the opening of pole 4, the described pipe 1 that causes is introduced and draws from being welded on the mouth 9 that connects of sleeve pipe 8 other ends from one end of pole 4 by cover plate 3, cause that pipe 1 is fixedly connected with the inwall that connects mouth 9, is connecing connecting sensor gaging pressure on mouth 9;

Described temperature measuring equipment comprises temperature measurement component 2 and round electric connector 14, described temperature measurement component 2 is inserted in porcelain tube and is connected with cover plate 3 interference fit, the temperature measurement component 2 being inserted in porcelain tube is together packed in pole 4, cover plate 3 is fixedly connected with one end of pole 4, the other end of pole 4 is fixedly connected with one end of transfer tube 10, the other end of described transfer tube 10 is threaded with nut component 11, described temperature measurement component 2 is successively through pole 4, transfer tube 10 and nut component 11, from the other end of nut component 11, draw, to in pole 4 and transfer tube 10, pour into megohmite insulant 15, the temperature measurement component of drawing 2 use glass bushings 13 are packaged to rear impregnation dries, again metallic shield net 12 is enclosed within on glass bushing 13, the clamp of described metallic shield net 12 use nut components 11, the one end of drawing temperature measurement component is connected and measures temperature with round electric connector 14.

Preferably, suit switching nut 5 on pole 4 arranges a stop collar 7 after the front portion of pole 4, the nut 5 of transferring, and described stop collar 7 is fixedly connected on pole 4, between connected nut 5 and stop collar 7, cutting ferrule 6 is set, switching nut 5 is fixedly linked with engine.

Further preferably, described megohmite insulant 15 is Hot Cement.

A kind of little blockage ratio detector probe of single-point with performance test disclosed by the invention, cause pipe 1 and the temperature measurement component 2 that at cover plate 3 front ends, expose can gather the temperature and pressure of surveyed air-flow simultaneously, by causing that pipe 1 introduces tested source of the gas, make air-flow by sleeve pipe 8 and connect mouth 9 to enter pressure measurement original paper and carry out pressure survey; Air-flow is connected with data acquisition system (DAS) through aviation assembly 14 by temperature measurement component 2 simultaneously, carry out temperature survey, the present invention possesses the repertoire of temperature, the split type detector probe of pressure simultaneously, and be subject to the little blockage ratio detector probe of single-point to there is reduced size, can also bear pneumatic, heating power and mechanical load greatly, when work, can not be subject to influencing each other of bleed stream, in the working environment lower than 500 ℃, meet the standard of various experimental test tests.

Accompanying drawing explanation

Below in conjunction with drawings and the embodiments, the present invention is described in further detail:

Fig. 1 is the structural representation of the little blockage ratio detector probe of single-point.

Embodiment

The little blockage ratio detector probe of a kind of single-point for performance test as shown in Figure 1, comprise and cause pipe 1 and temperature element 2, described causes after pipe 1 and cover plate 3 welding, porcelain tube is set with on temperature measurement component 2 and takes the mode of interference fit to be connected with cover plate 3, one side of cover plate 3 is exposed a termination that causes pipe 1 and temperature element 2, then cause pipe 1, temperature measurement component 2 and cover plate 3 integral body that assemble are packed in pole 4, and cover plate 3 and one end of pole 4 are welded to connect; Switching nut 5 is inserted in to the front portion of pole 4, by stop collar 7 and pole 4 welding, regulates the height of cutting ferrule 6 simultaneously, guarantee the contiguity of transferring nut 5 and pole 4; Sleeve pipe 8 is welded to connect with pole 4, connecing mouth 9 is welded to connect with sleeve pipe 8, cause that pipe 1 other end is by cover plate 3, pole 4, sleeve pipe 8, finally from connecing the openend of mouth 9, draw, to cause that pipe 1 and the inwall that connects mouth 9 weld again, connecing mouth 9 connecting sensors, the sensor connecting transfers air-flow to voltage signal, gathers the data of pressure by data acquisition system (DAS).

The other end of described pole 4 and one end of transfer tube 10 welding, transfer tube 10 other ends and nut component 11 are threaded connection, the other end of described temperature measurement component 2 is successively through pole 4, transfer tube 10 and nut component 11, megohmite insulant 15 is chosen Hot Cement, Hot Cement is proportionally prepared, pack in pole 4 and transfer tube 10, after to be cooled completing, the temperature measurement component 2 use glass fiber sleeve pipes 13 that grow transfer tube 10 are packaged to rear impregnation dries, again, metallic shield net 12 is sleeved on glass fiber sleeve pipe 13, and by the clamp on metallic shield net 12 use nut components 11, Hot Cement and glass fiber sleeve pipe 13 can make temperature element 2 and outside play insulating effect, guaranteed the accuracy of temperature signal, on glass fiber sleeve pipe 13, putting metallic shield net 12 makes metallic shield net 12 can shield the impact of extraneous signal, the interference of the worn-out external temperature signal of screen, from drawing the other end of temperature measurement component, be connected with round electric connector 14, by data acquisition system (DAS) collecting temperature data.

By reference to the accompanying drawings embodiments of the present invention are described in detail above, but the present invention is not limited to above-mentioned embodiment, in the ken possessing those of ordinary skills, can also under the prerequisite that does not depart from aim of the present invention, makes a variety of changes.

Claims

1. for the little blockage ratio detector probe of single-point of performance test, it is characterized in that: comprise pressure tester and temperature measuring equipment;

Described pressure tester comprises and causes pipe (1) and pole (4), the middle part of described pole (4) tube wall has opening, one end of sleeve pipe (8) tilts to be fixedly connected with the opening of pole (4), the described pipe (1) that causes is introduced and draws from being welded on the mouth (9) that connects of sleeve pipe (8) other end from one end of pole (4) by cover plate (3), cause that pipe (1) is fixedly connected with the inwall that connects mouth (9), connecing the upper connecting sensor gaging pressure of mouth (9);

Described temperature measuring equipment comprises temperature measurement component (2) and round electric connector (14), described temperature measurement component (2) is inserted in porcelain tube through cover plate (3) and is connected with cover plate (3) interference fit, the temperature measurement component (2) being inserted in porcelain tube is together packed in pole (4), cover plate (3) is fixedly connected with one end of pole (4), the other end of pole (4) is fixedly connected with one end of transfer tube (10), the other end of described transfer tube (10) is threaded with nut component (11), described temperature measurement component (2) is successively through cover plate (3), pole (4), transfer tube (10) and nut component (11), from the other end of nut component (11), draw, to in pole (4) and transfer tube (10), pour into megohmite insulant (15), glass bushing (13) is sleeved on the temperature measurement component (2) of drawing, again metallic shield net (12) is sleeved on glass bushing (13), the clamp of nut component (11) for described metallic shield net (12), the one end of drawing temperature measurement component is connected and measures temperature with round electric connector (14).

2. the little blockage ratio detector probe of the single-point for performance test according to claim 1, it is characterized in that: at the upper suit switching of pole (4) nut (5), front portion, switching nut (5) in pole (4) arrange a stop collar (7) afterwards, described stop collar (7) is fixedly connected on pole (4), between connected nut (5) and stop collar (7), cutting ferrule (6) is set, switching nut (5) is fixedly linked with engine.

3. the little blockage ratio detector probe of the single-point for performance test according to claim 1, is characterized in that: described megohmite insulant (15) is Hot Cement.