Compression-resistant flue pipe

Abstract

The utility model discloses a pressure-resistant flue pipe, and relates to the technical field of flue pipes. Comprising a pipeline, a connecting ring and a control valve, the pipeline is composed of a bent pipe and a straight pipe, the bent pipe and the straight pipe are connected through the connecting ring, and a pressure relief assembly is arranged on the bent pipe; the pressure relief assembly comprises a flow guide pipe and a pressure relief pipe fixedly connected to the corner of the bent pipe, the pressure relief pipe is communicated with the bent pipe, the outer wall of the pressure relief pipe is fixedly connected with a threaded ring, the outer wall of the threaded ring is in threaded connection with a sealing cover, and the outer wall of the bent pipe is fixedly connected with a positioning ring. And the pressure relief pipe is communicated with the positioning ring through a flow guide pipe. The elbow of the flue pipe is provided with the pressure relief assembly, the pressure relief assembly takes the flow guide pipe as a main body, and the control valve is arranged in the middle of the flow guide pipe, so that when the internal pressure of the smoke pipeline is gradually increased, the control valve on the elbow is opened, the pressure borne by the elbow is reduced, and the pressure resistance of the flue pipe is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of flue pipes, in particular to a pressure-resistant flue pipe. Background Art

[0002] The flue pipe is a section of pipe that discharges the flue gas generated when the gas water heater is in use to the outside. The stainless steel flue pipe has the advantages of corrosion resistance, long service life, safety and reliability, and bright and beautiful appearance. It is an ideal gas water heater flue pipe.

[0003] Flue pipes are generally divided into straight pipes and curved pipes. Curved pipes are used to change the path of smoke and are usually required to withstand high pressure. In actual use, when the internal pressure of the smoke pipe gradually increases, the curved pipe is easily damaged by excessive pressure if the pressure cannot be reduced in time. To address this problem, a pressure-resistant flue pipe is proposed. Utility Model Content

[0004] The purpose of the utility model is to provide a pressure-resistant flue pipe, which solves the technical problems raised in the background technology.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solution: a pressure-resistant flue pipe, comprising a pipe, a connecting ring and a control valve, wherein the pipe is composed of a bend pipe and a straight pipe, the bend pipe and the straight pipe are connected by a connecting ring, and a pressure relief assembly is provided on the bend pipe;

[0006] The pressure relief assembly includes a guide pipe and a pressure relief pipe fixedly connected at the corner of the elbow, the pressure relief pipe is connected to the elbow, the outer wall of the pressure relief pipe is fixedly connected with a threaded ring, the outer wall of the threaded ring is threadedly connected with a sealing cover, the outer wall of the elbow is fixedly connected with a positioning ring, and the pressure relief pipe and the positioning ring are connected through the guide pipe.

[0007] Preferably, the inner walls of the positioning ring and the sealing cover are both provided with thread grooves.

[0008] Preferably, the guide pipe includes connecting pipe 1 and connecting pipe 2, both ends of connecting pipe 1 and connecting pipe 2 are rotatably connected with rotating rings, connecting pipe 1 is threadedly connected to the sealing cover through the rotating ring, and connecting pipe 2 is threadedly connected to the positioning ring through the rotating ring, and the ends of connecting pipe 1 and connecting pipe 2 that are close to each other are both threadedly connected to the control valve through the rotating ring.

[0009] Preferably, the inner wall of the control valve is rotatably connected to a valve stem, the outer wall of the valve stem is fixedly connected to a handle, and the handle is located outside the guide tube.

[0010] Preferably, the outer wall of the connecting ring is rotatably connected to a fixing bracket, and there are two fixing brackets. The two fixing brackets are axially symmetrically arranged along the center line of the connecting ring, and a connecting plate is fixedly connected between the two fixing brackets.

[0011] Preferably, bolts are threadedly connected to the fixing bracket.

[0012] Compared with the related art, the pressure-resistant flue pipe provided by the present invention has the following beneficial effects:

[0013] 1. The utility model provides a pressure-resistant flue pipe. A pressure relief assembly is provided on the bend of the flue pipe. The pressure relief assembly is mainly composed of a guide pipe, and a control valve is provided in the middle of the guide pipe. When the internal pressure of the smoke pipe gradually increases, the control valve on the bend is opened to reduce the pressure on the bend and improve the pressure resistance of the flue pipe.

[0014] 2. The utility model provides a pressure-resistant flue pipe. The pressure relief component is based on a guide pipe. Both ends of the guide pipe are connected to the elbow by a rotating ring. It is easy to disassemble and assemble, and convenient for inspection and maintenance. The short section of the flue pipe is assembled through the connecting ring. After assembly, it can be fixed to the wall through a fixing frame, which is convenient for fixing the use position of the flue pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural diagram of the utility model;

[0016] Figure 2 This is a schematic diagram of the structure of the pressure relief pipe of the present utility model;

[0017] Figure 3 This is a schematic diagram of the structure of the positioning ring of the utility model;

[0018] Figure 4 This is a structural diagram of the connecting plate of the present utility model;

[0019] Figure 5 This is a schematic diagram of the cross-sectional structure of the pressure relief pipe of the present invention.

[0020] In the figure: 1. Bend pipe; 2. Straight pipe; 3. Connecting ring; 4. Pressure relief pipe; 5. Threaded ring; 6. Positioning ring; 7. Sealing cover; 8. Flow guide pipe; 801. Connecting pipe 1; 802. Connecting pipe 2; 9. Control valve; 10. Rotating ring; 11. Handle; 12. Fixing bracket; 13. Bolt; 14. Connecting plate. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0022] Example:

[0023] See also Figures 1-4 The utility model provides a technical solution: a pressure-resistant flue pipe, including a pipe, a connecting ring 3 and a control valve 9. The pipe is composed of a bend pipe 1 and a straight pipe 2. The bend pipe 1 and the straight pipe 2 are connected by a connecting ring 3. A pressure relief component is provided on the bend pipe 1. The bend pipe 1 and the straight pipe 2 are disconnected by the connecting ring 3, which is convenient for inspection and maintenance of the pipe. When the internal pressure of the smoke pipe gradually increases, the pressure relief component on the bend pipe 1 is opened to reduce the pressure on the bend pipe 1, thereby improving the pressure resistance of the flue pipe.

[0024] The pressure relief assembly includes a guide pipe 8 and a pressure relief pipe 4 fixedly connected to the corner of the elbow 1. The pressure relief pipe 4 is connected to the elbow 1. The outer wall of the pressure relief pipe 4 is fixedly connected to a threaded ring 5. The outer wall of the threaded ring 5 is threadedly connected to a sealing cover 7. The outer wall of the elbow 1 is fixedly connected to a positioning ring 6. The pressure relief pipe 4 and the positioning ring 6 are connected through the guide pipe 8. The inner walls of the positioning ring 6 and the sealing cover 7 are both provided with threaded grooves.

[0025] The guide pipe 8 includes a connecting pipe 1 801 and a connecting pipe 2 802. Both ends of the connecting pipe 1 801 and the connecting pipe 2 802 are rotatably connected with a rotating ring 10. The connecting pipe 1 801 is threadedly connected to the sealing cover 7 through the rotating ring 10. The connecting pipe 2 802 is threadedly connected to the positioning ring 6 through the rotating ring 10. The ends of the connecting pipe 1 801 and the connecting pipe 2 802 close to each other are threadedly connected to the control valve 9 through the rotating ring 10. The inner wall of the control valve 9 is rotatably connected to the valve stem, and the outer wall of the valve stem is fixedly connected to the handle 11. The handle 11 is located on the outside of the guide pipe 8 and is used to adjust the opening and closing of the control valve 9. The guide pipe 8 is divided into a connecting pipe 1 8 01 and connecting pipe 2 802 are two parts, both of which are connected to the two ports of the control valve 9 through a rotating ring 10, and the other ends of the two are respectively connected to the pressure relief pipe 4 and the positioning ring 6 through another rotating ring 10. When the control valve 9 is in the open state, the guide pipe 8 is connected to the elbow 1, which can reduce the pressure on the elbow 1. When the control valve 9 is in the closed state, the guide pipe 8 and the elbow 1 are not connected; when the internal pressure of the elbow 1 is too high, the control valve 9 is opened to reduce the pressure at the elbow 1 and improve the pressure resistance of the flue pipe. During normal use, the control valve 9 is in the closed state to reduce the natural loss of the pressure relief component;

[0026] The outer wall of the connecting ring 3 is rotatably connected to a fixing bracket 12. There are two fixing brackets 12, and the two fixing brackets 12 are axially symmetrically arranged along the center line of the connecting ring 3. A connecting plate 14 is fixedly connected between the two fixing brackets 12. Bolts 13 are threadedly connected to the fixing brackets 12. When the flue pipe is in use, its pipe short section is assembled and connected through the connecting ring 3. After the assembly is completed, it can be fixed to a wall or a connecting seat through the fixing bracket 12 to fix the flue pipe. The fixing bracket 12 is installed on the connecting ring 3 in a rotatable connection manner, which is convenient for adjustment and installation and has strong applicability.

[0027] Working principle: The elbow 1 and the straight pipe 2 are disconnected through the connecting ring 3, which is convenient for inspection and maintenance of the pipeline. When the internal pressure of the smoke pipe gradually increases, the pressure relief component on the elbow 1 is opened to reduce the pressure of the elbow 1 and improve the pressure resistance of the flue pipe. The guide pipe 8 is divided into two parts: connecting pipe 1 801 and connecting pipe 2 802. Both are connected to the two ports of the control valve 9 through the rotating ring 10, and the other ends of the two are connected to the pressure relief pipe 4 and the positioning ring 6 respectively through another rotating ring 10. When the control valve 9 is in the open state, the guide pipe 8 is connected to the elbow 1, which can reduce the pressure on the elbow 1. When the control valve 9 is in the closed state, there is no conduction between the guide pipe 8 and the elbow 1; when the internal pressure of the elbow 1 is too large, the control valve 9 is opened to reduce the pressure at the elbow 1, thereby improving the pressure resistance of the flue pipe. During normal use, the control valve 9 is in the closed state, reducing the natural loss of the pressure relief component. When the flue pipe is in use, its pipe short section is assembled and connected through the connecting ring 3. After the assembly is completed, it can be fixed to the wall or the connecting seat through the fixing bracket 12 to fix the flue pipe. The fixing bracket 12 is installed on the connecting ring 3 in a rotating connection manner, which is convenient for adjustment and installation and has strong applicability.

[0028] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A pressure-resistant flue pipe, comprising a pipe, a connecting ring (3) and a control valve (9), wherein the pipe is composed of a curved pipe (1) and a straight pipe (2), and is characterized in that: The curved pipe (1) and the straight pipe (2) are connected via a connecting ring (3), and a pressure relief assembly is provided on the curved pipe (1); The pressure relief assembly comprises a flow guide pipe (8) and a pressure relief pipe (4) fixedly connected to the corner of the elbow (1); the pressure relief pipe (4) is connected to the elbow (1); the outer wall of the pressure relief pipe (4) is fixedly connected to a threaded ring (5); the outer wall of the threaded ring (5) is threadedly connected to a sealing cover (7); the outer wall of the elbow (1) is fixedly connected to a positioning ring (6); the pressure relief pipe (4) and the positioning ring (6) are connected via the flow guide pipe (8).

2. The pressure-resistant flue pipe according to claim 1, characterized in that: The inner walls of the positioning ring (6) and the sealing cover (7) are both provided with thread grooves.

3. The pressure-resistant flue pipe according to claim 1, characterized in that: The guide pipe (8) includes a connecting pipe 1 (801) and a connecting pipe 2 (802), both ends of the connecting pipe 1 (801) and the connecting pipe 2 (802) are rotatably connected to a rotating ring (10), the connecting pipe 1 (801) is threadedly connected to the sealing cover (7) through the rotating ring (10), the connecting pipe 2 (802) is threadedly connected to the positioning ring (6) through the rotating ring (10), and the ends of the connecting pipe 1 (801) and the connecting pipe 2 (802) that are close to each other are threadedly connected to the control valve (9) through the rotating ring (10).

4. The pressure-resistant flue pipe according to claim 1, characterized in that: The inner wall of the control valve (9) is rotatably connected to a valve stem, and the outer wall of the valve stem is fixedly connected to a handle (11), and the handle (11) is located outside the flow guide tube (8).

5. The pressure-resistant flue pipe according to claim 4, characterized in that: The outer wall of the connecting ring (3) is rotatably connected to a fixing frame (12), the number of the fixing frames (12) is two, the two fixing frames (12) are axially symmetrically arranged along the center line of the connecting ring (3), and a connecting plate (14) is fixedly connected between the two fixing frames (12).

6. The pressure-resistant flue pipe according to claim 5, characterized in that: Bolts (13) are threadedly connected to the fixing frame (12).

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