Through channel soft air channel test tool

Abstract

The utility model provides a through channel soft air channel test tool, which comprises a front end air channel, a tail end air channel and a middle installation frame arranged between the front end air channel and the tail end air channel, a soft air channel is fixedly installed on the middle installation frame, the soft air channel is communicated with the front end air channel and the tail end air channel, and the front end air channel is communicated with the tail end air channel. The front-end air duct and the tail-end air duct are both provided with flow detectors, the middle mounting frame comprises a front-end butt-joint frame, a tail-end butt-joint frame and a bearing frame, the bearing frame is detachably mounted between the front-end butt-joint frame and the tail-end butt-joint frame, the soft air duct is assembled and mounted on the bearing frame, and the flow detectors are mounted on the front-end butt-joint frame and the tail-end butt-joint frame. The assembling mode between the soft air duct and the bearing frame is set by imitating the assembling mode between the soft air duct and the through channel, the installation frame can be used for achieving simulated assembling of the soft air duct, the sealing performance of the assembled soft air duct is tested, and therefore the accuracy degree of the sealing performance testing result of the soft air duct is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of rail transit equipment etc. BACKGROUND

[0002] The top of the through passage of the urban rail train is provided with a soft air duct, the soft air duct is used for ventilation and temperature regulation inside the through passage, the soft air duct itself has the requirements of flexibility and sealing, but there is a structural conflict between the sealing and the flexibility, that is, when the flexibility of the soft air duct is ensured, the sealing of the soft air duct will be damaged, and after the production of the soft air duct is completed, the flow detection of the sealing is carried out, such as the sealing pressure test device for building heating and ventilation pipeline disclosed in patent No. CN216081926U, wherein the sealing of the pipe wall is detected by clamping the pipe with a support plate and applying pressure and soap water, but when this detection method is applied to the soft air duct, the soft air duct will collapse internally after being fixed at both ends due to the lack of support at the middle position, resulting in a mismatch between the detection result and the actual application effect. SUMMARY

[0003] The technical problem to be solved by the utility model is that the detection result and the actual application effect do not match when the soft air duct is subjected to air tightness detection.

[0004] The utility model adopts the technical scheme that a through passage soft air duct test tool, including front end air duct, tail end air duct and the middle installation frame that sets up between the front end air duct and the tail end air duct, soft air duct fixed mounting is in the middle installation frame, soft air duct links to each other the front end air duct and the tail end air duct, the front end air duct and the tail end air duct all are installed with flow detection meter, the middle installation frame includes front end butt joint frame, tail end butt joint frame and bearing frame, the bearing frame can detachably install between the front end butt joint frame and the tail end butt joint frame, soft air duct assembly installs in the bearing frame, and the assembly mode between soft air duct and the bearing frame is set up by imitating the assembly mode between soft air duct and the through passage.

[0005] Further, the end of the front end fan is provided with a detection fan, and the detection fan and the front end butt joint frame are arranged at both ends of the front end air duct.

[0006] Further, the front end air duct is in the form of a square conical pipe structure, the detection fan is installed in the large-diameter end portion of the front end air duct, and the small-diameter port of the front end fan is connected to the end portion of the soft air duct.

[0007] Further, the front end butt joint frame and the tail end butt joint frame are both provided with a butt joint box, and the butt joint box is connected to the front and rear sides of the soft air duct, respectively.

[0008] Further, the bearing frame is provided with a fixed bridge body, two ends of the fixed bridge body are fixedly connected to the front end butt joint frame and the tail end butt joint frame respectively, and the soft air duct is assembled and installed on the fixed bridge body.

[0009] Further, the butt joint box is provided with a connecting panel, and two ends of the bearing frame are installed on two connecting panels respectively.

[0010] Further, the connecting panel is a connecting flange plate, and the port of the soft air duct is fixed to the connecting panel in a flange connection mode.

[0011] Further, the pressure conversion panel is provided with a pressure conversion sleeve, a pressure conversion shaft is movably installed in the pressure conversion sleeve, a pressure conversion plate is installed at an end of the pressure conversion shaft, and the pressure conversion plate can be pressed to the connecting end surface of the soft air duct.

[0012] Further, an end of the pressure conversion shaft, away from the pressure conversion plate, is hingedly connected with a control circular plate, and the hinged point of the control circular plate and the pressure conversion shaft is arranged away from the center of the control circular plate, and the control circular plate abuts to the end of the pressure conversion sleeve.

[0013] The utility model discloses a bearing frame is additionally arranged between the front end air duct and the tail end air duct, the soft air duct is installed on the bearing frame in the mode of being installed to the through channel, the gas is inputted to the soft air duct through the front end air duct, and the gas in the soft air duct is discharged through the tail end air duct, and the flow rate difference is measured by using the flow detector to determine the sealing property of the soft air duct, and the soft air duct is measured under the premise of simulation assembly, so as to improve the accuracy of the sealing property detection of the soft air duct, thereby improving the matching of the detection effect and the actual effect. BRIEF DESCRIPTION OF DRAWINGS

[0014] The utility model is further illustrated below in connection with the drawings and examples.

[0015] Figure 1 Fig. 1 is a perspective view of a through channel soft air duct detection tool embodiment 1 of the utility model;

[0016] Figure 2 Fig. 2 is another perspective view of the through channel soft air duct detection tool embodiment 1 of the utility model; Figure 1

[0017] Figure 3 Fig. 3 is a perspective view of a through channel soft air duct detection tool embodiment 2 of the utility model;

[0018] Figure 4 Fig. 4 is another perspective view of the through channel soft air duct detection tool embodiment 2 of the utility model; Figure 3

[0019] Fig. 5 is a perspective view of part of the structure of the through channel soft air duct detection tool embodiment 1 and the through channel soft air duct detection tool embodiment 2 of the utility model; Figure 5 Figure 3 Figure 4 ​​​​

[0020] In the figure: front end air duct 10, tail end air duct 20, middle mounting rack 30, detection fan 110, flow detection meter 210, front end docking rack 310, tail end docking rack 320, bearing rack 330, docking box 311, connecting panel 312, fixed bridge body 331, pressure conversion sleeve 313, pressure conversion shaft 314, pressure conversion plate 315, control round plate 316. DETAILED DESCRIPTION

[0021] The embodiments of the present application are described below in detail, examples of which are shown in the drawings, wherein the same or similar notations represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by reference to the drawings are exemplary only, and are for the purpose of explanation only, and are not to be understood as a limitation of the present application. On the contrary, the embodiments of the present application include all changes, modifications and equivalents falling within the spirit and scope of the appended claims.

[0022] Embodiment 1

[0023] As shown in Figure 1 and Figure 2 , the present embodiment provides a through-passage soft air duct detection tool, which comprises a front end air duct 10, a tail end air duct 20 and a middle mounting rack 30 arranged between the front end air duct 10 and the tail end air duct 20. The soft air duct is fixed on the middle mounting rack 30, and the two ends of the soft air duct are respectively communicated to the front end air duct 10 and the tail end air duct 20, a certain flow of gas is injected into the soft air duct through the front end air duct 10, and the gas flows out from the tail end air duct 20. By comparing the inflow and outflow, the sealing property of the soft air duct can be determined.

[0024] The front end air duct 10 is a square conical pipe structure, and a detection fan 110 is installed at the end of the front end air duct 10. The detection fan 110 is installed in the larger diameter end of the front end air duct 10, and the detection fan 110 inputs the measured air volume from the larger diameter end of the front end air duct 10. The smaller diameter end of the front end air duct 10 is communicated to the mounting rack 30, and when the soft air duct is assembled to the mounting rack 30, one end of the soft air duct is communicated to the smaller diameter port of the front end air duct 10. The air volume injected by the detection fan 110 flows into the soft air duct through the front end air duct 10. The tail end air duct 20 is a square pipe structure, and the end of the tail end air duct 20 is communicated to the port of the soft air duct through the mounting rack 30, and the detection gas inside the soft air duct is injected into the tail end air duct 20. The flow detection meter 210 is installed on the front end air duct 10 and the tail end air duct 20, and the flow detection meter 210 detects the gas flow at the port. By comparing the measurement results at the two places, the loss rate of the gas in the soft air duct can be calculated, and thus the sealing property of the soft air duct can be measured.

[0025] The intermediate mounting frame 30 comprises a front end butt joint frame 310, a tail end butt joint frame 320 and a bearing frame 330. The front end butt joint frame 310 is arranged corresponding to the front end air duct 10, and the small diameter port of the front end air duct 10 is fixed on the front end butt joint frame 310. The butt joint boxes 311 are mounted on the front end butt joint frame 310 and the tail end butt joint frame 320, and the butt joint boxes 311 are respectively connected to the front and rear sides of the soft air duct. The air flow is input into the soft air duct through the front end air duct 10 and the butt joint boxes 311, and the air flow in the soft air duct is discharged through the other butt joint box 311 and the tail end air duct 20. The connection panels 312 are mounted on the butt joint boxes 311, and the two ends of the bearing frame 330 are respectively mounted on the two connection panels 312. The bearing frame 330 comprises a fixed bridge body 331, and the two ends of the fixed bridge body 331 are respectively fixedly connected to the front end butt joint frame 310 and the tail end butt joint frame 320. The soft air duct is assembled and mounted on the fixed bridge body 331, and the two ends of the soft air duct are respectively communicated to the butt joint boxes 311 of the front end butt joint frame 310 and the tail end butt joint frame 320. The end of the soft air duct is sealingly fixed to the connection panel 312. Preferably, sealing glue is applied between the end of the soft air duct and the connection panel 312 to reduce the gap between the soft air duct and the connection panel 312. The fixed bridge body 331 is arranged in the form of a pipe passage shed, and the soft air duct is installed on the fixed bridge body 331 in the same way as it is assembled on the shed. The two ends of the soft air duct are communicated to the butt joint boxes 311, and the sealing performance of the soft air duct is tested in a simulated condition by means of simulation installation, so as to ensure the testing accuracy of the sealing performance of the soft air duct.

[0026] Preferably, the connection panel 312 is a connection flange plate, the edge of the connection panel 312 exceeds the butt joint box 311, and the soft air duct and the butt joint box 311 are respectively arranged on the two sides of the connection panel 312. The soft air duct and the butt joint box 311 are communicated with each other through the connection panel 312. The port of the soft air duct is provided with an assembly frame, and the assembly frame is fixed to the connection panel 312 in the form of flange connection. The form of flange connection can further reduce the gap between the connection panel 312 and the soft air duct.

[0027] The above-mentioned through-passage soft air duct testing tool is used to install the soft air duct on the fixed bridge body 331. The assembly mode between the soft air duct and the fixed bridge body 331 is referred to the assembly mode between the soft air duct and the folding shed. The two ends of the soft air duct are sealingly fixed to the connection panel 312. When the soft air duct is installed, the air flow is injected into the soft air duct by starting the air blower 110. The air flow enters the soft air duct from the front end air duct 10, and the air flow in the soft air duct is discharged from the tail end air duct 20. The flow detection meter 210 on the front end air duct 10 and the tail end air duct 20 detects the air flow, and the sealing performance of the soft air duct can be determined by the flow rate difference.

[0028] Embodiment 2

[0029] The difference between the present embodiment and embodiment 1 is that, as shown in Figures 3 to 5As shown, the connecting panel 312 and the soft air duct are not connected by flanges, that is, the connecting panel 312 is provided with a pressure conversion sleeve 313, which is arranged on both sides of the fixed bridge body 331. The pressure conversion sleeve 313 is movably provided with a pressure conversion shaft 314, which is telescopically and rotatably arranged in the pressure conversion sleeve 313. The pressure conversion shaft 314 is arranged perpendicularly to the connecting panel 312, and one end of the pressure conversion shaft 314 is provided with a pressure conversion plate 315, which can be pressed against the connecting end surface of the soft air duct. The other end of the pressure conversion shaft 314 is provided with a control circular plate 316, the end of the clamping circular plate 316 abuts against the end surface of the pressure conversion sleeve 313, the clamping circular plate 316 is hinged to the end of the pressure conversion shaft 314, and the clamping circular plate 316 is preferably an eccentric rotating plate structure, and the hinge point of the clamping circular plate 316 and the pressure conversion shaft 314 is offset from the center of the clamping circular plate 316.

[0030] When the soft air duct is aligned and installed on the connecting panel 312, the pressure conversion plate 315 is rotated to the outside of the connecting end surface of the soft air duct, the pressure conversion plate 315 is aligned with the end surface of the soft air duct, and then the clamping circular plate 316 at the other end is rotated, the side wall of the clamping circular plate 316 abuts against the pressure conversion sleeve 313, and drives the pressure conversion shaft 314 to telescopically move in the pressure conversion sleeve 313, so as to drive the pressure conversion plate 315 to clamp the soft air duct and the connecting panel 312.

[0031] Based on the above ideal embodiments of the present application, the related personnel can make various changes and modifications without deviating from the technical concept of the present application. The technical scope of the present application is not limited to the contents of the specification, and must be determined according to the scope of the claims.

Claims

1. A through-passage soft duct test fixture, characterized by: The utility model relates to a kind of soft air ducts, including front end air duct (10), tail end air duct (20) and the intermediate mounting frame (30) between the front end air duct (10) and the tail end air duct (20), soft air duct is fixedly installed on the intermediate mounting frame (30), soft air duct is communicated the front end air duct (10) and the tail end air duct (20), flow detection meter (210) is installed on the front end air duct (10) and the tail end air duct (20), the intermediate mounting frame (30) includes front end docking frame (310), tail end docking frame (320) and bearing frame (330), the bearing frame (330) is detachably installed between the front end docking frame (310) and the tail end docking frame (320), soft air duct is assembled and installed on the bearing frame (330), and the assembly mode between soft air duct and the bearing frame (330) is set up by copying the assembly mode between soft air duct and through channel.

2. The through-passage soft duct test fixture of claim 1, wherein: The end of the front end fan (10) is provided with a detection fan (110), and the detection fan (110) and the front end docking frame (310) are separately arranged at the two ends of the front end air duct (10).

3. The through-passage soft duct test fixture of claim 2, wherein: The front end air duct (10) is in the shape of a square cone, the detection fan (110) is installed in the large-diameter end of the front end air duct (10), and the small-diameter end of the front end fan (10) is communicated with the end of the soft air duct.

4. The through-passage soft duct test fixture of claim 1, wherein: The front end docking frame (310) and the tail end docking frame (320) are both provided with a docking box (311), and the docking box (311) is connected to the front and rear sides of the soft air duct respectively.

5. The through-passage soft duct test fixture of claim 1, wherein: The bearing frame (330) is provided with a fixed bridge body (331), and the two ends of the fixed bridge body (331) are fixedly connected to the front end docking frame (310) and the tail end docking frame (320) respectively, and the soft air duct is assembled and installed on the fixed bridge body (331).

6. The through-passage soft duct test fixture of claim 4, wherein: The docking box (311) is provided with a connecting panel (312), and the two ends of the bearing frame (330) are installed on two connecting panels (312) respectively.

7. The through-passage soft duct test fixture of claim 6, wherein: The connecting panel (312) is a connecting flange plate, and the port of the soft air duct is fixed to the connecting panel (312) in a flange connection mode.

8. The through-passage soft duct test fixture of claim 6, wherein: The connecting panel (312) is provided with a pressure conversion sleeve (313), a pressure conversion shaft (314) is movably installed in the pressure conversion sleeve (313), a pressure conversion plate (315) is installed at the end of the pressure conversion shaft (314), and the pressure conversion plate (315) can be pressed to the connecting end surface of the soft air duct.

9. The through-passage soft duct test fixture of claim 8, wherein: The end of the pressure conversion shaft (314) away from the pressure conversion plate (315) is hingedly connected with a control circular plate (316), and the hinge point of the control circular plate (316) and the pressure conversion shaft (314) is arranged away from the center of the control circular plate (316), and the control circular plate (316) abuts to the end of the pressure conversion sleeve (313).

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