CN217637995U

CN217637995U - Test bed structure for reducing rotation time

Info

Publication number: CN217637995U
Application number: CN202123191189.1U
Authority: CN
Inventors: 郭佳帅; 牛福亮; 田佳宁; 薛海波
Original assignee: Beijing Aerospace Sanfa High Tech Co Ltd
Current assignee: Beijing Aerospace Sanfa High Tech Co Ltd
Priority date: 2021-12-18
Filing date: 2021-12-18
Publication date: 2022-10-21
Anticipated expiration: 2031-12-18

Abstract

A rotating time reduction test bed comprises a case and a panel fixedly connected with the case; the panel is provided with an electric interface bracket, a rear cover, a panel air inlet and a computer installation part. The electric interface bracket comprises a grounding terminal, an input/output electric connector, a power switch, a solenoid valve switch and an air outlet of the electric interface bracket. The utility model discloses a fall and change time test bench structure through reasonable box structure and the panel that sets up, and the electric appliance is borrowed a mouthful support, and back shroud and wind gap have realized detecting components and parts with the deceleration and have held and connect the interface, and simple structure is effective, reasonable.

Description

Falling rotating time test bed structure

Technical Field

The utility model relates to an engine test technical field specifically is a fall and change time test bench structure.

Background

After the engine is delivered to a customer for use, regular maintenance is needed, in the maintenance, the engine rotation reduction time within a preset value range is an important index for detecting the flexibility of an engine rotor, however, in the prior art, a device for reducing the rotation speed of the engine has no test bed structure which is simple in structure, can effectively accommodate relevant detection components and is provided with an effective connecting port.

Disclosure of Invention

The technical solution problem of the utility model is that: the defects in the prior art are overcome, and the rotating time reduction test bed structure is provided.

The technical solution of the utility model is that: the utility model provides a fall and change time test bench structure which characterized in that: comprises a case and a panel fixedly connected with the case; the panel is provided with an electric interface bracket, a rear cover, a panel air inlet and a computer installation part.

Further, the electric interface support comprises a grounding terminal, an input/output electric connector, a power switch, a solenoid valve switch and an air outlet of the electric interface support.

Further, the number of the input/output electric connectors is 4.

Furthermore, a USB interface is arranged on the rear cover.

Furthermore, the number of the USB interfaces is 2.

Furthermore, a cooling channel is arranged in the case, the cooling channel comprises a cooling cavity, a cooling channel air inlet and a cooling channel air outlet, and the cooling channel air inlet and the cooling channel air outlet are respectively communicated with the cooling cavity through an air inlet pipeline and an air outlet pipeline.

Compared with the prior art, the utility model the advantage lie in:

1. the utility model discloses a fall and change time test bench structure through reasonable box structure and the panel that sets up, and the electric appliance is borrowed a mouthful support, and back shroud and wind gap have realized detecting components and parts with the deceleration and have held and connect the interface, and simple structure is effective, reasonable.

2. The utility model discloses an among the time test bench of falling commentaries on classics, creative design the electrical interface support for ground terminal, input/output connector, switch, the reasonable arranging of solenoid valve switching on and shutting down electrical interface air exit electrical interface support, the brief introduction, the practicality.

3. The utility model discloses an among the falling time test bench, creative through be provided with cooling channel in the quick-witted incasement, realized the cooling to quick-witted incasement portion, especially VPX module.

Drawings

Fig. 1 is a schematic perspective view of the rotation time test stand of the present invention.

Fig. 2 is a front view of the rotation time test stand of the present invention.

Fig. 3 is a schematic view of a cooling channel in the spin-down time testing stand of the present invention.

Detailed Description

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description of the present invention and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention. Furthermore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted", "connected" and "abutted" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

As shown in fig. 1 to 3, a down-time testing stand includes a case 100 and a panel 110 fixedly connected to the case 100; the panel 110 is provided with an electrical interface bracket 120, a rear cover 130, a panel inlet 140 and a computer mounting portion 150. The electrical interface bracket 120 includes a ground terminal 121, an input/output electrical connector 122, a power switch 123, a solenoid valve switch 124, and an electrical interface bracket air outlet 125. The rear cover 130 is provided with a USB interface 131. The computer mounting part 150 mounts a computer 151.

Preferably, the number of the input/output electrical connectors 122 is 4.

Preferably, the number of the USB interfaces 131 is 2.

Preferably, a VPX data acquisition device 240 is disposed in the chassis 100, and the VPX data acquisition device 240 is electrically connected to the input/output electrical connector 122, the power switch 123, the solenoid valve switch 124 and the computer 151, where the VPX data acquisition device 240 is a conventional technology.

Preferably, be provided with cooling channel 200 in machine case 100, cooling channel 200 includes cooling cavity 210, cooling channel air intake 220 and cooling channel air outlet 230 respectively through intake stack 221 and air-out pipeline 231 with cooling cavity 210 communicates, wherein, cooling channel air intake 220 with panel air intake 140 communicates, cooling channel air outlet 230 with electrical interface support air exit 125 communicates, VPX data acquisition device 240 is located in cooling cavity 210, and is further preferred, VPX data acquisition device 240 is partly arranged in cooling cavity 210, and another part is arranged outside cooling cavity 210, the utility model discloses creatively set up cooling channel, realized the cooling in the machine case, especially VPX data acquisition device's heat dissipation, further preferred, in order to improve the radiating efficiency electrical interface support mouth 125 sets up the fan, further improves cooling channel's air velocity, thereby improves cooling efficiency.

The method for testing the rotating speed reduction time of the tested engine by using the rotating speed reduction test bed comprises the following steps:

s100, equipment connection

S110, connecting the descending time test bed with an air solenoid valve of an air source vehicle by using a cable;

s120, connecting an input/output electric connector 122 in the step-down time test bed with a rotating speed sensor for detecting the rotating speed of the tested engine by using a test cable;

s200, detection

S210, turning on a power switch 123 to start the rotation reducing time test bed;

s220, opening the electromagnetic valve switch 124 to start an air electromagnetic valve of the air source vehicle, wherein high-pressure air of the air source vehicle blows and rotates an engine rotor;

s230, detecting and outputting a rotating speed signal by the rotating speed sensor;

s240, determining a peak voltage according to a rotating speed signal output by the rotating speed sensor;

s250, calculating corresponding frequency according to the rotating speed signal output by the rotating speed sensor;

s260, calculating the engine speed corresponding to the speed signal output by the speed sensor according to the peak voltage determined in the step S240 and the frequency calculated in the step S250;

s270, if the engine rotating speed calculated in the step S260 is greater than a preset value R1, repeating the step S230 to the step 260 until the engine rotating speed calculated in the step S260 is less than or equal to the preset value R1, closing the electromagnetic valve switch 124, and entering a speed reduction timing step;

s300, speed reduction timing

S310, detecting and outputting a rotating speed signal by the rotating speed sensor;

s320, determining a peak voltage according to a rotating speed signal output by the rotating speed sensor;

s330, calculating corresponding frequency according to the rotating speed signal output by the rotating speed sensor;

s340, calculating the engine speed corresponding to the speed signal output by the speed sensor according to the peak voltage determined in the step S320 and the frequency calculated in the step S330;

s350, if the engine speed calculated in the step S340 is greater than the preset value R2, repeating the steps S310 to S340, and stopping timing until the engine speed calculated in the step S340 is less than or equal to the preset value R2;

s360, calculating the rotation reduction time;

and S370, turning off the power switch 123 to finish the test.

Preferably, in step S250, a corresponding frequency is calculated according to the rotation speed signal output by the rotation speed sensor; and/or in step S330, calculating a corresponding frequency according to the rotation speed signal output by the rotation speed sensor; the frequency is calculated using both the counting method and the FFT method.

Preferably, the predetermined value R1=5000PRM.

Preferably, the predetermined value R2=500PRM.

In the description of the present specification, reference to the description of "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. The utility model provides a fall and change time test bench structure which characterized in that: comprises a case and a panel fixedly connected with the case;

the panel is provided with an electrical interface bracket, a rear cover, a panel air inlet and a computer installation part;

the electric interface bracket comprises a grounding terminal, an input/output electric connector, a power switch, a solenoid valve switch and an air outlet of the electric interface bracket;

the rear cover is provided with a USB interface;

a cooling channel is arranged in the case and comprises a cooling cavity, a cooling channel air inlet and a cooling channel air outlet, and the cooling channel air inlet and the cooling channel air outlet are respectively communicated with the cooling cavity through an air inlet pipeline and an air outlet pipeline.

2. The drop-off time test stand structure of claim 1, wherein: the number of the input and output electric connectors is 4.

3. The drop-off time test stand structure of claim 1, wherein: the number of the USB interfaces is 2.