Assembly for connecting air pipe flanges in narrow space and connecting structure of assembly

Abstract

The utility model relates to an assembly for connecting an air pipe flange in a narrow space and a connecting structure of the assembly. The assembly comprises a flange clamp arranged at the upper part of the air pipe flange and a pressure applying device for pressing the flange clamp. The flange clamp comprises a left part and a right part, wherein the left part is a pressure-bearing base of an I-shaped steel structure, and the right part is an inclined pressing piece; a clamp included angle formed by the inclined edge of the inclined pressing piece and the bottom plate is 10-30 degrees; the pressure applying device comprises a base arranged below the flange, a caliper track vertically connected to the upper portion of the base, a self-locking caliper with one end arranged on the caliper track in a sleeving mode, a fixed torque lead screw connected with the other end of the self-locking caliper, a handle fixed to the upper end of the torque lead screw and a flange clamp gasket fixed to the lower end of the torque lead screw. And the flange clamp gasket is arranged above the pressure-bearing base. The problem of air pipe flange connection in a narrow space can be solved, the problems that the air pipe connection construction quality in the narrow space is poor and the air pipe is not tight are solved, and the later maintenance cost is saved.

Description

Technical Field

[0001] The utility model belongs to the technical field of air duct construction in the field of building construction, and specifically relates to a component used for flange connection of air ducts in a narrow space and a connection structure thereof. Background Art

[0002] Currently, during the construction of air ducts in narrow indoor spaces, such as vertical air shafts, the vertical shaft is often surrounded by structural walls on three sides. Because the air ducts in vertical air shafts are mostly pressurized air supply ducts or smoke exhaust ducts for fire smoke exhaust systems, the ducts are large and often connected with flanges. The space between the ducts and the structural walls is narrow, resulting in insufficient space for duct connection and installation, making construction difficult or even impossible. The quality of the duct connection and installation cannot be guaranteed, and there is no space on both sides or the back of the duct for connection operations. This leads to poor construction quality of the vertical air shaft duct connection, loose ducting, and high subsequent maintenance costs. Utility Model Content

[0003] The purpose of this utility model is to overcome the shortcomings of the prior art and provide an assembly and connection structure for connecting air duct flanges in narrow spaces, thereby solving the problem of connecting air duct flanges in narrow spaces, avoiding the problems of poor construction quality and loose air duct connections in narrow spaces such as vertical air shafts, and saving subsequent maintenance costs. The purpose of this utility model is achieved through the following technical solutions.

[0004] A component for connecting air duct flanges in a narrow space, where the narrow space here refers especially to a space that is difficult for people to enter and operate, comprising a flange clamp for being arranged on the upper part of the air duct flange, and a pressure device for pressing the flange clamp, wherein the flange clamp comprises two parts: the left side is a pressure-bearing base of an I-beam structure, and the right side is an inclined pressure piece; the inclined pressure piece is a combination structure of a horizontal bottom plate and a vertical vertical plate, the bottom plate is a rectangular plate extending from the bottom of the left I-beam structure, the vertical plate is an extension of the waist plate in the middle of the I-beam structure, the vertical plate is flush with the right end of the bottom plate, the vertical plate is a right-angled trapezoid or a right-angled triangle, and the left end of the vertical plate is the longer bottom side or right side of the right trapezoid. A right-angled side of the right triangle, the right end of the vertical plate is the shorter base of the right trapezoid or a vertex of the triangle, the upper side of the vertical plate is the hypotenuse, and the angle formed by the hypotenuse and the base plate is the fixture angle, and the fixture angle is 10~30°; the pressure device includes a base for being arranged under the flange, a caliper track vertically connected to the upper left end of the base, a self-locking caliper with one end mounted on the caliper track, a fixed torque screw connected to the other end of the self-locking caliper and parallel to the caliper track, a fixed torque handle arranged at the upper end of the fixed torque screw, and a flange clamp gasket connected to the lower end of the fixed torque screw; the flange clamp gasket is arranged above the pressure base.

[0005] Further optimization, the flange fixture gasket is a diamond friction gasket.

[0006] Furthermore, the upper plane of the pressure-bearing base is a frosted plane.

[0007] Furthermore, the left end of the vertical plate is higher than the upper plane of the pressure-bearing base.

[0008] A narrow space air duct flange connection structure includes a rectangular cross-section air duct installed in a narrow space with three closed sides and one open side, and a component for connecting the narrow space air duct flange. The upper and lower joints of the air duct are connected by flanges. The flange clamp is installed on the upper part of the flange, and the base is placed on the lower part of the flange. The flange clamp gasket is pressed against the upper surface of the pressure base by rotating a fixed torque screw. The pressure base of the flange clamp is located on the side close to the opening of the narrow space, and the inclined pressure piece of the flange clamp is located on the side close to the closed part of the narrow space. The narrow space is a vertical air shaft.

[0009] Beneficial effects of the utility model:

[0010] The utility model can solve the problem of flange connection of air ducts in narrow spaces, and avoid the problems of poor construction quality of air duct connection and loose air ducts in spaces such as vertical air shafts.

[0011] The utility model realizes tool-based operation, is convenient for assembly and disassembly, reduces manpower input, shortens construction period and improves work efficiency.

[0012] The construction of this utility model can transform the traditional practice into tool-based construction, which is flexible and practical and conforms to the concept of "new technology".

[0013] The utility model makes the on-site air duct connection firm, stable, convenient and efficient, and significantly improves the construction quality and efficiency.

[0014] The present invention will be further described in detail below with reference to the accompanying drawings and specific implementation methods. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the structure of the assembly state of the components of the utility model;

[0016] Figure 2 This is a schematic diagram of the structure of the flange clamp of the utility model;

[0017] Figure 3 This is a schematic structural diagram of the pressure-applying device of the utility model;

[0018] Figure 4 This is a schematic diagram of the three-dimensional structure of the utility model in use;

[0019] Figure 5 This is a side structural diagram of the utility model in use.

[0020] Reference numerals:

[0021] 1. Fixed torque handle; 2. Fixed torque screw; 3. Flange fixture gasket; 4. Base; 5. Self-locking caliper; 6. Caliper track; 7. Pressure base; 8. Inclined pressure piece; 81. Vertical plate; 82. Bottom plate; 9. Duct; 91. Flange; 10. Wall. DETAILED DESCRIPTION

[0022] Example 1

[0023] like Figure 1 As shown, a component for connecting flanges of air ducts in a narrow space includes a flange clamp for being arranged on the upper part of the air duct flange, and a pressure device for pressing the flange clamp.

[0024] like Figure 2 As shown, the flange clamp consists of two parts: the left side is the pressure-bearing base 7 of the I-beam structure, and the right side is the inclined pressure piece 8. The inclined pressure piece 8 is a combination of a horizontal bottom plate 82 and a vertical vertical plate 81. The bottom plate 82 is a rectangular plate extending from the bottom of the left I-beam structure, and the vertical plate 81 is an extension of the waist plate in the middle of the I-beam structure. The vertical plate 81 is flush with the right end of the bottom plate 82. The vertical plate 81 is a right-angled trapezoid, with the left end of the vertical plate 81 forming the longer base of the trapezoid and the right end of the vertical plate 81 forming the shorter base. The upper edge of the vertical plate 81 is the hypotenuse. The angle formed by the hypotenuse and the bottom plate 82 is the clamp angle, which ranges from 0 to 30 degrees. The angle can be selected based on the specific usage conditions. Generally, for air ducts placed in an air shaft with a width of approximately 1 to 3 meters, a clamp angle θ of 10 to 30 degrees can meet the usage conditions. It is more advantageous to increase the angle as the width of the wind shaft increases. It is preferred that the left end of the vertical plate 81 is higher than the upper plane of the pressure base 7.

[0025] like Figure 3 As shown, the pressure-applying device includes a base 4 for being arranged under the flange, a caliper track 6 vertically connected to the upper left end of the base 4, a self-locking caliper 5 with one end mounted on the caliper track 6, a fixed torque screw 2 connected to the other end of the self-locking caliper 5 and parallel to the caliper track 6, a fixed torque handle 1 arranged at the upper end of the fixed torque screw 2, and a flange clamp gasket 3 connected to the lower end of the fixed torque screw 2; the flange clamp gasket 3 is arranged above the pressure base 7.

[0026] In this embodiment, the flange fixture gasket 3 is a DAOLER diamond friction gasket. This gasket has excellent wear resistance, high temperature resistance, and high hardness. The embedded diamond particles can significantly increase the static friction coefficient, thereby enhancing the stability and reliability of the connection.

[0027] The upper surface of the pressure base 7 is a frosted surface to increase friction with the gasket and enhance stability.

[0028] Example 2

[0029] A narrow space duct flange connection structure, such as Figure 4 、 5 As shown, it includes an air duct 9 with a rectangular cross section arranged in a vertical air shaft with three sides being closed walls 10 and one side being open, and the component for flange connection of air duct in a narrow space in Example 1.

[0030] The upper and lower joints of the air duct 9 are connected by flanges 91. The pressure base 7 of the flange clamp is arranged on one side of the air shaft opening, and the inclined pressure piece 8 of the flange clamp is arranged on the side close to the closed wall 10. The flange clamp is placed on the upper part of the flange 91, and the base 4 is placed on the lower part of the flange 91. The flange clamp gasket 3 is pressed against the upper plane of the pressure base 7 by rotating the fixed torque screw 2 to achieve a sealed connection between the flanges.

[0031] The connection process is as follows: place the flange clamp on the upper part of the duct flange that has been fixed but not connected → adjust the flange clamp so that it coincides with the duct flange → place the clamp base on the lower part of the duct flange → adjust the self-locking caliper and adjust the fixing torque screw gasket to be directly above the pressure base of the flange clamp → turn the fixing torque handle → clamp the flange clamp and the duct flange → finally tighten the screw to achieve the duct connection sealing requirement.

[0032] The above embodiments are only partial embodiments of the present invention and cannot cover all of the present invention. Based on the above embodiments and drawings, those skilled in the art can obtain more implementation methods without paying any creative work. Therefore, these implementation methods obtained without paying any creative work should be included in the scope of protection of the present invention.

Claims

1. A component for connecting flanges of air ducts in narrow spaces, characterized by: It includes a flange clamp for setting on the upper part of the air duct flange, and a pressure device for pressing the flange clamp. The flange clamp comprises two parts: a pressure base (7) of an I-beam structure on the left side and an inclined pressing piece (8) on the right side; the inclined pressing piece (8) is a combination structure of a horizontal bottom plate (82) and a vertical vertical plate (81); the bottom plate (82) is a rectangular plate extending from the bottom of the left I-beam structure; the vertical plate (81) is an extension of the waist plate in the middle of the I-beam structure; the vertical plate (81) is flush with the right end of the bottom plate (82); the vertical plate (81) is a right-angled trapezoid or a right-angled triangle; the left end of the vertical plate (81) is the longer base of the right-angled trapezoid or a right-angled side of the right-angled triangle; the right end of the vertical plate (81) is the shorter base of the right-angled trapezoid or a vertex of the triangle; the upper side of the vertical plate (81) is a hypotenuse; the angle formed by the hypotenuse and the bottom plate (82) is the fixture angle; the fixture angle is 10-30°; The pressure-applying device comprises a base (4) for being arranged below the flange, a caliper track (6) vertically connected to the upper left end of the base (4), a self-locking caliper (5) with one end sleeved on the caliper track (6), a fixed torque screw (2) connected to the other end of the self-locking caliper (5) and parallel to the caliper track (6), a fixed torque handle (1) arranged at the upper end of the fixed torque screw (2), and a flange fixture gasket (3) connected to the lower end of the fixed torque screw (2); the flange fixture gasket (3) is arranged above the pressure-bearing base (7).

2. The assembly for connecting flanges of air ducts in narrow spaces according to claim 1, characterized in that: The flange fixture gasket (3) is a diamond friction gasket.

3. The assembly for connecting flanges of air ducts in narrow spaces according to claim 1, characterized in that: The upper plane of the pressure-bearing base (7) is a frosted plane.

4. The assembly for connecting flanges to air ducts in narrow spaces according to claim 1, characterized in that: The left end of the vertical plate (81) is higher than the upper plane of the pressure-bearing base (7).

5. A flange connection structure for air ducts in a narrow space, characterized by: The invention comprises an air duct (9) with a rectangular cross section arranged in a narrow space with three closed sides and one open side, and a component for flange connection of air duct in a narrow space as claimed in claim 1; the upper and lower joints of the air duct (9) are connected by flanges (91), the flange clamp is arranged on the upper part of the flange (91), the base (4) is placed on the lower part of the flange (91), and the flange clamp gasket (3) is pressed against the upper plane of the pressure base (7) by rotating the fixed torque screw (2); the pressure base (7) of the flange clamp is located on the side close to the opening of the narrow space, and the inclined pressure piece (8) of the flange clamp is located on the side close to the closure of the narrow space.

6. The narrow space air duct flange connection structure according to claim 5, characterized in that: The narrow space is in the vertical air shaft.

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