CN204387307U - A kind of gas type ellipse-rectangle conversion waveguide hermetic seal flange - Google Patents

Abstract

The utility model provides an air-sealed flange for an inflatable ellipse-rectangular conversion waveguide, which includes an ellipse flange, an ellipse flange fixing block, a tail sealing ring and an end face sealing ring. The ellipse flange is provided with a central hole. The central hole includes an elliptical first hole segment, a second hole segment connected to the first hole segment and in an elliptical tapered shape, and a third hole segment connected to the second hole segment and in a circular shape, The circumferential dimension of the third hole section is larger than the circumferential dimension of the second hole section and its adjacent end, and the second hole section is equipped with a tail sealing ring that can be sleeved on the outside of the elliptical flexible waveguide. The first hole section An ellipse flange fixing block is installed in the three-hole section, and the ellipse flange fixing block is fixed on the ellipse flange. An ellipse hole is opened on the ellipse flange fixing block. The ellipse flange is close to the third hole section. A groove is opened on the end face, and an end face sealing ring is arranged in the groove. The airtight flange is adopted, which is convenient for installation and can obtain good sealing performance.

Description

An air-tight flange for an inflatable elliptical-rectangular conversion waveguide

technical field

The utility model relates to the field of air-tight flanges, in particular to an air-tight flange for an inflatable ellipse-rectangular conversion waveguide.

Background technique

In recent years, with the rapid development of microwave communication technology, elliptical flexible waveguides have been widely used as transmission feeders in radar, satellite communication, digital microwave relay communication, radio and television microwave transmission, multi-channel microwave distribution system and other fields. The elliptical flexible waveguide has low attenuation, small VSWR, good airtightness, low cost, and has certain tensile strength and flexibility. It can be produced in large lengths, convenient for transportation and installation, and is suitable for long-distance microwave signal transmission. Since the microwave antenna and transmitter interfaces are mostly rectangular waveguide interfaces (in line with the requirements of GB11449.2-1989), flanges and elliptical-rectangular conversion waveguides are required to connect the elliptical flexible waveguide and rectangular waveguide, while ensuring the airtightness of the entire system .

At present, the flange used for supporting the inflatable elliptical-rectangular conversion waveguide mainly relies on two places to achieve air sealing. One is to install the sealing ring in the sealing groove 1 on the end face of the flange; the other is to install the rubber extrusion hole 2 on the side of the flange. Apply a generous amount of potting sealant until it overflows the flange, then apply waterproof tape. There are several major disadvantages in this sealing method: 1. The amount of glue squeezed is relatively random; 2. It is inconvenient to use in engineering; 3. The reliability of the air seal is not high.

Utility model content

The technical problem to be solved by the utility model is to provide an air-filled elliptical-rectangular conversion waveguide air-tight flange, which is convenient for connection and has good sealing performance, aiming at the shortcomings of existing air-tight flanges.

In order to solve the above technical problems, the technical solution adopted by the utility model is: an air-tight flange for an inflatable elliptical-rectangular conversion waveguide, which includes an elliptical flange, an elliptical flange fixing block, a tail sealing ring and an end face sealing ring, A central hole is opened in the elliptical flange, and the central hole includes an elliptical first hole section, a second hole section connected to the first hole section and having an elliptical tapered shape, and a second hole section connected to the second hole section. connected and circular third hole section, the circumferential dimension of the third hole section is larger than the circumferential dimension of the second hole section and its adjacent end, and the second hole section is equipped with a The tail sealing ring on the outside of the elliptical flexible waveguide, an elliptical flange fixing block is installed in the third hole section, the elliptical flange fixing block is fixed on the elliptical flange, and an elliptical hole is opened on the elliptical flange fixing block A groove is formed on the end surface of the elliptical flange close to the third hole section, and an end face sealing ring is arranged in the groove.

As a preferred manner: the elliptical flange fixing block is fixed on the elliptical flange by screws.

As a preferred manner: the end face sealing ring is an O-ring.

The air-tight flange for inflatable elliptical-rectangular conversion waveguide implementing the utility model has the following beneficial effects: when in use, the tail sealing ring is set on the elliptical flexible waveguide so that it is stuck on the corrugation of the elliptical flexible waveguide. The novel air-tight flange is easy to install, is beneficial to engineering application, and can obtain high air-tight reliability at the same time. In addition, the end face sealing ring can realize the air seal between the flange end face and the ellipse-rectangular conversion waveguide.

Description of drawings

The utility model will be further described below in conjunction with accompanying drawing and embodiment, in the accompanying drawing:

Fig. 1 is a three-dimensional structural schematic diagram of an air-tight flange used in an inflatable elliptical-rectangular conversion waveguide in the prior art;

Fig. 2 is a schematic cross-sectional view of Fig. 1;

Fig. 3 is the exploded schematic view of the air-tight flange for the inflatable ellipse-rectangular conversion waveguide of the present invention;

Fig. 4 is a schematic cross-sectional view of an air-tight flange for an inflatable elliptical-rectangular conversion waveguide of the present invention;

Fig. 5 is a structural schematic diagram of an elliptical flange in Fig. 3;

Fig. 6 is a schematic structural view of the tail sealing ring in Fig. 3;

Fig. 7 is a schematic structural view of the elliptical flange fixing block in Fig. 3;

FIG. 8 is a schematic diagram of the connection between the hermetic flange of the present invention and the inflatable elliptical-rectangular conversion waveguide.

Detailed ways

In order to make the purpose, technical solutions and advantages of the utility model clearer, the utility model will be further described in detail below in conjunction with the embodiments and accompanying drawings.

Referring to Fig. 3, the utility model discloses an air-tight flange for an inflatable ellipse-rectangular conversion waveguide, which includes an ellipse flange 3, an ellipse flange fixing block 4, a tail seal ring 5 and an end face seal ring 6, and the ellipse method One end of the blue 3 can be connected with the elliptical flexible waveguide, and the other end can be connected with the inflatable elliptical-rectangular conversion waveguide.

Referring to Fig. 4 and Fig. 5, a central hole is provided in the oval flange 3, and the central hole includes an elliptical first hole segment 301, a second hole segment 302 connected to the first hole segment 301 and an elliptical tapered shape, and The third hole section 303 is connected with the second hole section 302 and is circular. The elliptical cone, that is, the cross-section parallel to the bottom surface of the cone is a cone with an elliptical cross-section. As shown in Figure 4, the first hole segment 301 is located on the left side of the figure, the second hole segment 302 is located at the middle position, the third hole segment 303 is located at the right position, and the second hole segment 302 is connected to the first hole segment 301 , and the second hole segment 302 extends toward the direction of the third hole segment 303, and its circumferential dimension gradually expands. The circumferential dimension of the third hole section 303 is greater than the circumferential dimension of the second hole section 302 and its adjacent end, that is, the circumferential dimension of the right end of the second hole section 302, so that an elliptical flange can be installed in the third hole section 303 Fixed block 4.

Referring to Fig. 3, Fig. 4 and Fig. 6, Fig. 7, the second hole section 302 is installed with a tail sealing ring 5 which can be fitted on the outside of the elliptical flexible waveguide. limit. As shown in Figure 6, the tail sealing ring 5 sets the inner ring 501 to the shape of the outer corrugation of the elliptical flexible waveguide, so that it can be stuck on the corrugation of the elliptical flexible waveguide, that is to say, its inner ring 501 is roughly corrugated shape, and can match with the outer corrugation of the elliptical flexible waveguide, so that the elliptical flexible waveguide can be installed in the elliptical flange 3, and the air seal between the tail of the flange and the elliptical flexible waveguide can be realized. An elliptical flange fixing block 4 is installed in the third hole section 303, and the elliptical flange fixing block 4 is fixed on the elliptical flange 3. An elliptical hole 401 is opened on the elliptical flange fixing block 4, and the elliptical flange 3 is close to the third hole. A groove (not shown in the figure) is provided on the end surface of the section 303, and an end face sealing ring 6 is arranged in the groove, which can realize the air seal between the end face of the air flange and the elliptical-rectangular conversion waveguide.

As shown in Figure 4, as an optional method, the elliptical flange fixing block 4 is fixed on the elliptical flange 3 through screws 10, which can play the role of fixing the elliptical flexible waveguide together with the elliptical flange 3, and realize the Connections between elliptical-rectangular transition waveguides.

The above-mentioned end face sealing ring 6 can be selected as an O-ring, and its material can be silicone rubber, especially environmentally friendly silicone rubber. The material of the tail seal ring 5 can be the same as that of the end face seal ring 6, both of which are environmentally friendly silicone rubber.

In addition, the materials of the elliptical flange 3 and the elliptical flange fixing block 4 are environmentally friendly copper, and the surface is coated with metal, so as to ensure the overall strength of the airtight flange.

In addition, as shown in Figure 5, Figure 6, and Figure 7, the size parameters can be selected as follows: A1=45mm, B1=28mm, A2=50mm, B2=33mm, A3=42mm, B3=24mm, C =40mm. Wherein, the oval flange 3 located at the left part 31 in Fig. 3 is elliptical, and it has an oval first hole segment 301, A1 refers to the major axis dimension of the first hole segment 301, and B1 is the first hole segment The minor axis dimension of 301, A2 refers to the major axis dimension of the outer edge of the left side part 31 (as shown in Figure 3, the part forming the first hole section 301), B2 refers to the short axis dimension of the outer edge of the left side part 31 Axis dimensions; the elliptical flange fixing block 4 has an elliptical hole 401 , A3 refers to the major axis dimension, B3 refers to the minor axis dimension; C refers to the outer wall diameter of the tail sealing ring 5 .

Referring to Fig. 8, the airtight flange 7 of the present utility model (including the elliptical flange 3, the elliptical flange fixing block 4, the tail sealing ring 5, and the end face sealing ring 6), when in use, the left end can be connected into the elliptical soft The right end of the waveguide (not shown in the figure) can be connected with an inflatable elliptical-rectangular conversion waveguide 8 .

In this implementation case, the typical working pressure when used with the elliptical flexible waveguide is 55kPa.

The air-tight flange for inflatable elliptical-rectangular conversion waveguide implementing the utility model has the following beneficial effects: when in use, the tail sealing ring 5 is set on the elliptical flexible waveguide so that it is stuck on the corrugation of the elliptical flexible waveguide. The air-tight flange of the utility model is easy to install, is beneficial to engineering application, and can obtain high air-tight reliability at the same time.

The air-tight flange of the utility model adopts the tail sealing ring structure instead of the traditional sealant sealing method, which has the following advantages:

1. The installation is facilitated, the work efficiency is greatly improved, and the installation time is reduced from 30 minutes to 10 minutes;

2. Reduce the dependence on the proficiency of operators in engineering applications, and use engineering applications;

3. It is more conducive to the later maintenance and parts replacement of the elliptical flexible waveguide feeder system, which greatly improves the maintainability of the system;

4. It avoids the decrease or failure of the airtightness caused by insufficient extruded rubber, and improves the reliability of the airtightness.

The basic principles and main features of the present utility model and the advantages of the present utility model have been shown and described above. Those skilled in the art should understand that the utility model is not limited by the above-mentioned embodiments. The above-mentioned embodiments and descriptions only illustrate the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model The new model also has various changes and improvements, and these changes and improvements all fall within the scope of the claimed utility model. The scope of protection required by the utility model is defined by the appended claims and their equivalents.

Claims (3)

1. An air-tight flange for an inflatable ellipse-rectangular conversion waveguide, characterized in that: it includes an ellipse flange, an ellipse flange fixing block, a tail sealing ring and an end face sealing ring, and a center hole is provided in the ellipse flange , the central hole includes an elliptical first hole segment, a second hole segment connected to the first hole segment and in the shape of an ellipse taper, and a third hole connected to the second hole segment and in a circular shape section, the circumferential dimension of the third hole section is greater than the circumferential dimension of the second hole section and its adjacent end, and a tail sealing ring that can be sleeved on the outside of the elliptical flexible waveguide is installed in the second hole section, so An ellipse flange fixing block is installed in the third hole section, the ellipse flange fixing block is fixed on the ellipse flange, an ellipse hole is opened on the ellipse flange fixing block, and the ellipse flange is close to the third hole A groove is opened on the end surface of the segment, and an end face sealing ring is arranged in the groove. 2. The gas-tight flange for an inflatable elliptical-rectangular conversion waveguide according to claim 1, wherein the elliptical flange fixing block is fixed on the elliptical flange by screws. 3. The air-tight flange for an inflatable elliptical-rectangular conversion waveguide according to claim 1, wherein the sealing ring on the end face is an O-ring.