CN201311036Y

CN201311036Y - Ventilating pipe for testing ventilation system of motor

Info

Publication number: CN201311036Y
Application number: CNU200820219098XU
Authority: CN
Inventors: 张宇; 马惠春; 车向中
Original assignee: CNR Dalian Electric Traction R& D Center Co Ltd
Current assignee: CRRC Dalian R&D Co Ltd
Priority date: 2008-11-10
Filing date: 2008-11-10
Publication date: 2009-09-16
Anticipated expiration: 2018-11-10

Abstract

The utility model discloses a ventilating pipe for testing ventilation system of motor, comprising an outer sleeve, an inner sleeve, a sealing gasket and a fastening ring, wherein the sealing gasket is mounted between the outer sleeve and the inner sleeve; the fastening ring is sheathed on the outer sleeve; the sealing gasket is a cylinder rubber sealing gasket; the fastening ring is an open metal ring; the mouth of the metal ring is provided with an adjusting screw coated by a rubber layer. The ventilating pipe can be used as the transverse pipe of ventilation system or the longitudinal pipe of ventilation system, therefore, the ventilation opening of the ventilation system can be easily connected with any part above test platform. The inner and the outer sleeves are connected by the sealing gasket and the fastening ring, to confirm the strength and rigidity of the ventilation pipe. The fastening ring is an open metal ring, the adjusting screw on the metal ring can be adjusted to adjust the engagement tightness and sliding property between the inner and the outer sleeves.

Description

A kind of ventilation shaft of testing the motor ventilation system

Technical field

The utility model relates to a kind of ventilation shaft of testing the motor ventilation system, carries out the ventilation shaft of the ventilating system of external forced cooling when testing on test platform especially for motor.

Background technology

Generally, the test motor when on test platform, testing sometimes away from the ventilating opening of ventilating system, for solving the not enough problem of ventilation shaft length, existing way is the ventilating bag of port cover at ventilation shaft, and the other end of ventilating bag connects the equipment of testing the coolings of need ventilating such as motor.Though this way has solved the not enough problem of ventilation shaft length, the accurate alignment test motor of ventilating opening causes cooling effectiveness lower in actual applications, has wasted the energy; Because ventilation shaft inner wind speed height of when work, wind-force are big, in case, will have serious consequences because install and insecurely make ventilating bag be blown away even be blown into motor.

Summary of the invention

In order to overcome the above-mentioned shortcoming of prior art, the utility model will design a kind of scalable ventilation shaft of testing the motor ventilation system.

To achieve these goals, the technical solution of the utility model is as follows: a kind of ventilation shaft of testing the motor ventilation system, comprise outer tube, inner sleeve, seal washer and tighten ring, described seal washer is installed between outer tube and the inner sleeve, and described tighten ring is enclosed within on the outer tube.

Seal washer described in the utility model is cylindric rubber gasket, and inner wall surface is more coarse than outer wall surface, is shorter in length than inner sleeve, and internal diameter is slightly less than the inner sleeve external diameter, and external diameter then is slightly larger than the outer tube internal diameter.

Tighten ring described in the utility model is the becket of opening, and the becket opening part has adjustment screw, and the becket internal diameter is slightly less than the external diameter of outer tube, and there is the rubber layer parcel on the surface.

Compared with prior art, the utlity model has following beneficial effect:

1, because the inwall of seal washer of the present utility model is close to outer wall, the outer wall of inner sleeve contacts with outer sleeve inner wall again, and the difference of seal washer inside and outside wall surface roughness makes and can make seal washer be close to inner sleeve when internal and external casing slides mutually; The elasticity of rubber gasket can make slides flexibly, and the while guarantees air tight again, thereby has realized the scalability of ventilation shaft.Because this ventilation shaft both can be used as the horizontal pipeline of ventilating system, also can be used as the pipe tunnel of ventilating system, make the ventilating opening of ventilating system can conveniently be connected to any position of test platform top.

2, owing to adopt the syndeton of seal washer and tighten ring between the internal and external casing of the present utility model, born fully, guaranteed the strength and stiffness of ventilation shaft from the required pressure of internal and external casing connection.

3,, can regulate degree of tightness and the sliding capability that internal and external casing cooperates by the adjustment screw of regulating on the becket because tighten ring of the present utility model is the becket of opening.

Description of drawings

2 in the total accompanying drawing of the utility model, wherein:

Fig. 1 is the longitudinal sectional view of the ventilation shaft of test motor ventilation system.

Fig. 2 is the A-A cutaway view of the ventilation shaft of test motor ventilation system.

Among the figure: 1, outer tube, 2, inner sleeve, 3, seal washer, 4, tighten ring, 5, adjustment screw.

The specific embodiment

Below in conjunction with accompanying drawing the utility model is further detailed.Shown in Fig. 1～2, a kind of ventilation shaft of testing the motor ventilation system comprises outer tube 1, inner sleeve 2, seal washer 3 and tighten ring 4, and described seal washer 3 is installed between outer tube 1 and the inner sleeve 2, and described tighten ring 4 is enclosed within on the outer tube 1.Described seal washer 3 is cylindric rubber gasket 3, and inner wall surface is more coarse than outer wall surface, is shorter in length than inner sleeve 2, and internal diameter is slightly less than inner sleeve 2 external diameters, and external diameter then is slightly larger than outer tube 1 internal diameter.Described tighten ring 4 is the becket of opening, and the becket opening part has adjustment screw 5, and the becket internal diameter is slightly less than the external diameter of outer tube 1, and there is the rubber layer parcel on the surface.

When the utility model uses, if desired inner sleeve 2 is elongated or shortened, can suitably unclamp the adjustment screw 5 of becket opening part earlier, make outside tighten ring 4 become slack, thereby make between tighten ring 4 and the outer tube 1, the pressure between outer tube 1 and the seal washer 3, between seal washer 3 and the inner sleeve 2 diminishes, frictional force also diminishes thereupon; Pull out or push inner sleeve 2 along sleeve pipe ventilation direction then, because the difference of seal washer 3 inside and outside wall surface roughnesses, make and to make seal washer 3 be close to inner sleeve 2 when internal and external casing slides mutually, this moment, seal washer 3 was as a whole with respect to outer tube 1 slip with 2 one-tenth of inner sleeves, after being adjusted to the length that needs, tighten adjustment screw 5 again and make tighten ring 4 tightly wale outer tube 1, have enough pressure assurances loosening, air tight between the internal and external casing thereby allow.

Claims

1, a kind of ventilation shaft of testing the motor ventilation system, it is characterized in that: comprise outer tube (1), inner sleeve (2), seal washer (3) and tighten ring (4), described seal washer (3) is installed between outer tube (1) and the inner sleeve (2), and described tighten ring (4) is enclosed within on the outer tube (1).

2, the ventilation shaft of test motor ventilation according to claim 1 system, it is characterized in that: seal washer (3) is a cylindric rubber gasket (3), inner wall surface is more coarse than outer wall surface, be shorter in length than inner sleeve (2), internal diameter is slightly less than inner sleeve (2) external diameter, and external diameter then is slightly larger than outer tube (1) internal diameter.

3, the ventilation shaft of test motor ventilation according to claim 1 system, it is characterized in that: described tighten ring (4) is the becket of opening, the becket opening part has adjustment screw (5), and the becket internal diameter is slightly less than the external diameter of outer tube (1), and there is the rubber layer parcel on the surface.