Fire-fighting stainless steel explosion-proof corrugated pipe
By introducing anti-dropping, anti-impact and manual pressure relief structures into the stainless steel bellows for fire protection, the problems of loose connection and sealing are solved, and the effects of stable connection and safe pressure relief are achieved.
Patent Information
- Application Number
- CN202423021716.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-09
- Publication Date
- 2025-09-12
- Estimated Expiration
- 2034-12-09
AI Technical Summary
Existing stainless steel bellows for fire protection are prone to loosening at the joints, resulting in poor sealing or falling off, and lack of impact resistance and pressure relief functions.
A stainless steel explosion-proof bellows for firefighting was designed. It adopted an anti-falling connection structure, an impact-resistant structure and a manual pressure relief structure. The anti-falling connection was achieved through connecting flanges, sealing gaskets and locking nuts. An aerogel layer was filled inside to provide impact resistance, and manual pressure relief was achieved through a pressure relief valve.
The connection has the functions of anti-falling, anti-impact and manual pressure relief, which improves the stability and safety of the connection and enhances the adaptability to high-pressure environment.
Smart Images
Figure CN223331332U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of bellows, in particular to a stainless steel explosion-proof bellows for fire fighting. Background Art
[0002] Firefighting equipment is equipment used for fire extinguishing, fire prevention and fire accidents. Firefighting engineering refers to a comprehensive engineering technology that takes preventive measures to prevent fires and reduce fire losses. It covers a wide range of areas, including fire safety in various fields such as industrial production, commercial operations, building structures, and residential communities. Stainless steel explosion-proof bellows are used to construct firefighting engineering equipment.
[0003] Stainless steel explosion-proof bellows are designed to facilitate water transportation in fire protection engineering construction. Common corrugated pipe connections use screws to lock the flanges of two sets of pipes. The nuts on the screws can loosen under certain frequency vibrations, causing the pipe joint to lose its seal or even fall off. Therefore, we have proposed a stainless steel explosion-proof bellows for fire protection to improve the above-mentioned problem. Utility Model Content
[0004] The purpose of the utility model is to provide a stainless steel explosion-proof bellows for fire fighting, so as to solve the problems raised in the above background technology.
[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solution: a stainless steel explosion-proof bellows for fire fighting, comprising a bellows body, connecting sleeves installed on both sides of the bellows body, a connecting flange provided on the left side of the connecting sleeve, a flange slot provided inside the connecting flange, a mounting sleeve provided on the right side of the connecting sleeve, a sealing gasket provided on the left side of the interior of the mounting sleeve, a connecting screw inserted on the left side of the interior of the mounting sleeve, a movable screw connected to the right side of the connecting screw, a sealing clamp ring clamped on the inner wall of the mounting sleeve, and a locking nut provided on the right side of the connecting flange.
[0006] As a further technical solution of the present invention, the flange slot is opened inside the connecting flange, the connecting flange is inserted into the mounting sleeve through the right side of the mounting sleeve, and the connecting screw and the movable screw installed inside the mounting sleeve are inserted into the flange slot opened inside the connecting flange.
[0007] As a further technical solution of the present invention, the connecting flange is inserted into the interior of the mounting sleeve and contacts the sealing gasket and sealing retaining ring inside the mounting sleeve. The locking nut is sleeved on the outside of the connecting screw and the movable screw and contacts the right side of the connecting flange, and the connecting screw and the movable screw rotate.
[0008] As a further technical solution of the present invention, the outer portion of the bellows body is provided with a metal braided layer, the inner side of the metal braided layer is provided with a leak-proof barrier layer, the inner portion of the bellows body is provided with a stainless steel bellows, and the outer portion of the stainless steel bellows is filled with an aerogel layer.
[0009] As a further technical solution of the present invention, the aerogel layer is filled between the stainless steel bellows and the leak-proof barrier inside the bellows body, the outside of the leak-proof barrier is covered with a metal braided layer, and the aerogel layer, leak-proof barrier and metal braided layer are sequentially arranged on the outside of the stainless steel bellows.
[0010] As a further technical solution of the present invention, a pressure relief valve is installed at the top of the connecting sleeve, an adjusting knob is inserted at the top of the pressure relief valve, a telescopic spring is sleeved on the outside of the adjusting knob, a sealing block is installed at the bottom of the adjusting knob, and guide rods are inserted on both sides of the top of the sealing block. A pressure relief inner groove is provided inside the pressure relief valve, a movable groove is provided inside the top of the pressure relief valve, an upper plug is inserted inside the movable groove, a pressure discharge port is provided at the top of the connecting sleeve, a sleeve inner groove is provided inside the connecting sleeve, and a guide port is provided on the right side of the pressure relief valve.
[0011] As a further technical solution of the present invention, the adjusting knob is inserted into the interior of the pressure relief valve and connected to the sealing block in the pressure relief inner groove inside the pressure relief valve. The telescopic spring is sleeved on the outside of the adjusting knob inside the pressure relief inner groove. The sealing block connected to the bottom of the adjusting knob is clamped with the pressure discharge port at the top of the connecting sleeve. The guide port is connected to the pressure relief inner groove inside the pressure relief valve through the right side of the pressure relief valve.
[0012] As a further technical solution of the present invention, the inner groove of the sleeve inside the connecting sleeve is connected to the pressure relief inner groove inside the pressure relief valve through the pressure discharge port, and the adjusting knob rotates at the top of the pressure relief valve to drive the lead-out rods on both sides of the top of the sealing block to extend and retract inside the movable groove opened at the top of the pressure relief valve, and the upper plug is clamped inside the movable groove.
[0013] Compared with the prior art, the beneficial effects of the present invention are: the fire-fighting stainless steel explosion-proof bellows not only realizes the connection anti-falling function and the impact resistance function, but also realizes the manual pressure relief function;
[0014] (1) By setting up a connection anti-falling structure, the utility model is beneficial as follows: when in use, a connecting flange connected to the connecting sleeve on the left side of a group of bellows bodies is inserted into the inside of the mounting sleeve connected to the connecting sleeve on the right side of another group of bellows bodies, and the connecting screw and the movable screw inside the mounting sleeve are inserted into the flange slot opened inside the connecting flange, and the two sides of the connecting flange are respectively in contact with the sealing gasket and the sealing clamp ring inside the mounting sleeve, and then the locking nut is threadedly engaged with the connecting screw and the movable screw, and the locking nut is in contact with the right side of the connecting flange, and then the movable screw on the right side of the connecting screw is rotated to prevent the locking nut from being detached from the outside of the connecting screw and the movable screw, thereby realizing the connection anti-falling function;
[0015] (2) By setting up an impact-resistant structure, the utility model has the following advantages: an aerogel layer is filled between the stainless steel bellows and the leak-proof barrier inside the bellows body. The aerogel layer has good heat insulation and flame retardancy, and has certain elasticity and impact resistance. The leak-proof barrier outside the aerogel layer can prevent the aerogel layer from overflowing from the inside of the metal braided layer. The metal braided layer also has impact resistance, thereby achieving an impact-resistant function.
[0016] (3) By setting up a manual pressure relief structure, the utility model has the following advantages: when in use, the upper plug is pulled out from the movable groove at the top of the pressure relief valve, and then the adjusting knob is turned to drive the sealing block to expand and contract in the pressure relief inner groove inside the pressure relief valve, and at the same time, the lead-out rod at the top of the sealing block slides inside the movable groove, and the sealing block is separated from the pressure relief port at the top of the connecting sleeve, allowing the liquid inside the stainless steel bellows to enter the pressure relief inner groove along the pressure relief port through the sleeve inner groove inside the connecting sleeve, and then be discharged through the lead-out port on the right side of the pressure relief valve, thereby realizing the manual pressure relief function. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 This is a front view structural diagram of the utility model;
[0018] Figure 2 This is a schematic diagram of the front cross-sectional structure of the present utility model;
[0019] Figure 3 This is an enlarged cross-sectional structural diagram of the mounting sleeve of the present invention;
[0020] Figure 4 It is a schematic diagram of the enlarged cross-section structure of the connecting sleeve and the pressure relief valve of the present invention.
[0021] In the figure: 1. Connecting flange; 2. Connecting sleeve; 3. Bellows body; 4. Metal braided layer; 5. Pressure relief valve; 6. Mounting sleeve; 7. Locking nut; 8. Flange slot; 9. Leak-proof barrier; 10. Stainless steel bellows; 11. Aerogel layer; 12. Sealing gasket; 13. Sealing clamp; 14. Connecting screw; 15. Movable screw; 16. Adjusting knob; 17. Lead-out port; 18. Pressure relief port; 19. Sealing block; 20. Telescopic spring; 21. Upper plug; 22. Lead-out rod; 23. Movable groove; 24. Pressure relief inner groove; 25. Sleeve inner groove. DETAILED DESCRIPTION
[0022] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.
[0023] See also Figure 1-4 The utility model provides an embodiment: a stainless steel explosion-proof bellows for fire protection, comprising a bellows body 3, with connecting sleeves 2 installed on both sides of the bellows body 3, a connecting flange 1 provided on the left side of the connecting sleeve 2, a flange slot 8 provided inside the connecting flange 1, a mounting sleeve 6 provided on the right side of the connecting sleeve 2, a sealing gasket 12 provided on the left side of the interior of the mounting sleeve 6, a connecting screw 14 inserted on the left side of the interior of the mounting sleeve 6, a movable screw 15 connected to the right side of the connecting screw 14, a sealing clamp 13 clamped on the inner wall of the mounting sleeve 6, and a locking nut 7 provided on the right side of the connecting flange 1;
[0024] The flange slot 8 is opened in the interior of the connecting flange 1, and the connecting flange 1 is inserted into the interior of the mounting sleeve 6 through the right side of the mounting sleeve 6. The connecting screw 14 and the movable screw 15 installed in the mounting sleeve 6 are inserted into the flange slot 8 opened in the connecting flange 1. The connecting flange 1 is inserted into the interior of the mounting sleeve 6 and contacts the sealing gasket 12 and the sealing clamping ring 13 inside the mounting sleeve 6. The locking nut 7 is sleeved on the outside of the connecting screw 14 and the movable screw 15 and contacts the right side of the connecting flange 1, and the connecting screw 14 and the movable screw 15 rotate;
[0025] Specifically, if Figure 1 and Figure 3As shown, by setting a connection anti-falling structure, when in use, the connecting flange 1 connected to the connecting sleeve 2 on the left side of one group of bellows bodies 3 is inserted into the mounting sleeve 6 connected to the connecting sleeve 2 on the right side of another group of bellows bodies 3, and the connecting screw 14 and the movable screw 15 inside the mounting sleeve 6 are inserted into the flange slot 8 opened inside the connecting flange 1, and the two sides of the connecting flange 1 are respectively in contact with the sealing gasket 12 and the sealing clamp 13 inside the mounting sleeve 6, and then the locking nut 7 is threadedly engaged with the connecting screw 14 and the movable screw 15, and the locking nut 7 is in contact with the right side of the connecting flange 1, and then the movable screw 15 on the right side of the connecting screw 14 is rotated to prevent the locking nut 7 from detaching from the outside of the connecting screw 14 and the movable screw 15, thereby realizing the connection anti-falling function.
[0026] The outer surface of the bellows body 3 is covered with a metal braided layer 4, the inner side of the metal braided layer 4 is provided with a leak-proof barrier 9, the inner side of the bellows body 3 is provided with a stainless steel bellows 10, and the outer side of the stainless steel bellows 10 is filled with an aerogel layer 11;
[0027] The aerogel layer 11 is filled between the stainless steel bellows 10 and the leak-proof barrier 9 inside the bellows body 3. The leak-proof barrier 9 is covered with a metal braided layer 4. The aerogel layer 11, the leak-proof barrier 9 and the metal braided layer 4 are sequentially arranged on the outside of the stainless steel bellows 10.
[0028] Specifically, if Figure 1 and Figure 2 As shown, by setting an impact-resistant structure, an aerogel layer 11 is filled between the stainless steel bellows 10 and the leak-proof barrier 9 inside the corrugated pipe body 3. The aerogel layer 11 has good heat insulation and flame retardancy, and has certain elasticity and impact resistance. The leak-proof barrier 9 outside the aerogel layer 11 can prevent the aerogel layer 11 from overflowing from the inside of the metal braided layer 4, and the metal braided layer 4 also has impact resistance, thereby achieving an impact-resistant function.
[0029] A pressure relief valve 5 is installed at the top of the connecting sleeve 2, and an adjusting knob 16 is inserted at the top of the pressure relief valve 5. A telescopic spring 20 is sleeved on the outside of the adjusting knob 16. A sealing block 19 is installed at the bottom of the adjusting knob 16. Lead-out rods 22 are inserted on both sides of the top of the sealing block 19. A pressure relief inner groove 24 is provided inside the pressure relief valve 5. A movable groove 23 is provided inside the top of the pressure relief valve 5. An upper plug 21 is inserted inside the movable groove 23. A pressure discharge port 18 is provided at the top of the connecting sleeve 2, a sleeve inner groove 25 is provided inside the connecting sleeve 2, and a lead-out port 17 is provided on the right side of the pressure relief valve 5.
[0030] The adjusting knob 16 is inserted into the interior of the pressure relief valve 5 and connected to the sealing block 19 in the pressure relief inner groove 24 inside the pressure relief valve 5. The telescopic spring 20 is sleeved on the outside of the adjusting knob 16 inside the pressure relief inner groove 24. The sealing block 19 connected to the bottom of the adjusting knob 16 is clamped with the pressure discharge port 18 at the top of the connecting sleeve 2. The lead-out port 17 is communicated with the pressure relief inner groove 24 inside the pressure relief valve 5 through the right side of the pressure relief valve 5. The sleeve inner groove 25 inside the connecting sleeve 2 is communicated with the pressure relief inner groove 24 inside the pressure relief valve 5 through the pressure discharge port 18. The adjusting knob 16 rotates at the top of the pressure relief valve 5 to drive the lead-out rods 22 on both sides of the top of the sealing block 19 to retract and retract inside the movable groove 23 opened at the top of the pressure relief valve 5, and the upper plug 21 is clamped inside the movable groove 23;
[0031] Specifically, if Figure 1 、 Figure 2 and Figure 4 As shown, by setting a manual pressure relief structure, when in use, the upper plug 21 is pulled out from the movable groove 23 at the top of the pressure relief valve 5, and then the adjusting knob 16 is rotated to drive the sealing block 19 to expand and contract in the pressure relief inner groove 24 inside the pressure relief valve 5. At the same time, the lead-out rod 22 at the top of the sealing block 19 slides inside the movable groove 23, and the sealing block 19 is separated from the pressure relief port 18 at the top of the connecting sleeve 2, allowing the liquid inside the stainless steel bellows 10 to pass through the sleeve inner groove 25 inside the connecting sleeve 2 along the pressure relief port 18 into the pressure relief inner groove 24, and then be discharged through the lead-out port 17 on the right side of the pressure relief valve 5, thereby realizing the manual pressure relief function.
[0032] Working principle: The utility model is used to insert the connecting flange 1 connected to the connecting sleeve 2 on the left side of one group of bellows bodies 3 into the inside of the mounting sleeve 6 connected to the connecting sleeve 2 on the right side of another group of bellows bodies 3, and let the connecting screw 14 and the movable screw 15 inside the mounting sleeve 6 be inserted into the flange slot 8 opened inside the connecting flange 1, so that the two sides of the connecting flange 1 are respectively in contact with the sealing gasket 12 and the sealing clamping ring 13 inside the mounting sleeve 6, and then the locking nut 7 is threadedly engaged with the connecting screw 14 and the movable screw 15, so that the locking nut 7 is in contact with the right side of the connecting flange 1, and then the movable screw 15 on the right side of the connecting screw 14 is rotated to prevent the locking nut 7 from detaching from the outside of the connecting screw 14 and the movable screw 15, so that multiple groups of bellows bodies 3 are connected. When in use, excessive water pressure will have the risk of bursting the stainless steel bellows 10 inside the bellows body 3, and then the upper plug 21 is removed from the vent The pressure relief valve 5 is pulled out from the movable groove 23 at the top of the movable groove 23, and the adjusting knob 16 is turned to drive the sealing block 19 to expand and contract in the pressure relief inner groove 24 inside the pressure relief valve 5. At the same time, the lead-out rod 22 at the top of the sealing block 19 slides inside the movable groove 23, so that the sealing block 19 at the bottom of the adjusting knob 16 is separated from the pressure relief port 18 at the top of the connecting sleeve 2, and the liquid inside the stainless steel bellows 10 enters the pressure relief inner groove 24 along the pressure relief port 18 through the sleeve inner groove 25 inside the connecting sleeve 2, and is discharged through the lead-out port 17 on the right side of the pressure relief valve 5. Finally, an aerogel layer 11 is filled between the stainless steel bellows 10 and the leak-proof barrier 9 inside the bellows body 3. The aerogel layer 11 has good heat insulation and flame retardancy, and has certain elasticity and impact resistance. The leak-proof barrier 9 outside the aerogel layer 11 can prevent the aerogel layer 11 from overflowing from the metal braided layer 4, and the metal braided layer 4 also has impact resistance.
[0033] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.
Claims
1. A stainless steel explosion-proof bellows for firefighting, comprising a bellows body (3), characterized in that: Connecting sleeves (2) are installed on both sides of the corrugated pipe body (3), a connecting flange (1) is provided on the left side of the connecting sleeve (2), a flange slot (8) is provided inside the connecting flange (1), a mounting sleeve (6) is provided on the right side of the connecting sleeve (2), a sealing gasket (12) is laid on the left side of the interior of the mounting sleeve (6), a connecting screw (14) is inserted on the left side of the interior of the mounting sleeve (6), a movable screw (15) is connected to the right side of the connecting screw (14), a sealing clamp (13) is clamped on the inner wall of the mounting sleeve (6), and a locking nut (7) is provided on the right side of the connecting flange (1).
2. The stainless steel explosion-proof bellows for firefighting according to claim 1, characterized in that: The flange slot (8) is opened inside the connecting flange (1), and the connecting flange (1) is inserted into the inside of the mounting sleeve (6) through the right side of the mounting sleeve (6), and the connecting screw (14) and the movable screw (15) installed inside the mounting sleeve (6) are inserted into the flange slot (8) opened inside the connecting flange (1).
3. The stainless steel explosion-proof bellows for firefighting according to claim 1, characterized in that: The connecting flange (1) is inserted into the interior of the mounting sleeve (6) and contacts the sealing gasket (12) and the sealing snap ring (13) inside the mounting sleeve (6); the locking nut (7) is sleeved on the outside of the connecting screw (14) and the movable screw (15) and contacts the right side of the connecting flange (1); and the connecting screw (14) and the movable screw (15) rotate.
4. The stainless steel explosion-proof bellows for firefighting according to claim 1, characterized in that: The bellows body (3) is externally sheathed with a metal braided layer (4), the inner side of the metal braided layer (4) is provided with a leak-proof barrier layer (9), a stainless steel bellows (10) is installed inside the bellows body (3), and the outer side of the stainless steel bellows (10) is filled with an aerogel layer (11).
5. The stainless steel explosion-proof bellows for firefighting according to claim 4, characterized in that: The aerogel layer (11) is filled between the stainless steel bellows (10) and the leak-proof barrier (9) inside the bellows body (3); the leak-proof barrier (9) is sheathed with a metal braided layer (4); and the aerogel layer (11), the leak-proof barrier (9) and the metal braided layer (4) are sequentially arranged outside the stainless steel bellows (10).
6. The stainless steel explosion-proof bellows for firefighting according to claim 1, characterized in that: A pressure relief valve (5) is installed at the top of the connecting sleeve (2), an adjusting knob (16) is inserted at the top of the pressure relief valve (5), a telescopic spring (20) is sleeved on the outside of the adjusting knob (16), a sealing block (19) is installed at the bottom of the adjusting knob (16), and guide rods (22) are inserted on both sides of the top of the sealing block (19), a pressure relief inner groove (24) is provided inside the pressure relief valve (5), a movable groove (23) is provided inside the top of the pressure relief valve (5), an upper plug (21) is inserted inside the movable groove (23), a pressure discharge port (18) is provided at the top of the connecting sleeve (2), a sleeve inner groove (25) is provided inside the connecting sleeve (2), and a guide port (17) is provided on the right side of the pressure relief valve (5).
7. The stainless steel explosion-proof bellows for firefighting according to claim 6, characterized in that: The regulating knob (16) is inserted into the interior of the pressure relief valve (5) and connected to the sealing block (19) in the pressure relief inner groove (24) inside the pressure relief valve (5); the telescopic spring (20) is sleeved on the outside of the regulating knob (16) inside the pressure relief inner groove (24); the sealing block (19) connected to the bottom of the regulating knob (16) is clamped with the pressure discharge port (18) at the top of the connecting sleeve (2); and the guide port (17) is communicated with the pressure relief inner groove (24) inside the pressure relief valve (5) through the right side of the pressure relief valve (5).
8. The stainless steel explosion-proof bellows for firefighting according to claim 6, characterized in that: The sleeve inner groove (25) inside the connecting sleeve (2) is communicated with the pressure relief inner groove (24) inside the pressure relief valve (5) through the pressure discharge port (18); the regulating knob (16) rotates at the top of the pressure relief valve (5) to drive the lead-out rods (22) on both sides of the top of the sealing block (19) to extend and retract inside the movable groove (23) opened at the top of the pressure relief valve (5); and the upper plug (21) is engaged inside the movable groove (23).