Fire fighting smoke evacuation conduit connection device

Abstract

The application relates to the technical field of connecting devices, and more specifically discloses a fire-fighting smoke exhaust pipeline connecting device which comprises a smoke exhaust pipeline, the smoke exhaust pipeline comprises a pipeline main body, a pipeline flange is welded on the pipeline main body, a clamping groove is arranged on the side of the pipeline flange at the connecting position of the pipeline main body, a connecting assembly is installed on the clamping groove, the two ends of the connecting assembly are fixedly connected with connecting side frames through universal bolts, the two connecting assemblies are connected through an extension assembly, and a sealing cover is installed on the connecting assembly; the high-temperature smoke in the fire can be used to trigger the upward bending of the double-layer metal sheet, push the contact ball to contact the negative metal sheet to conduct the circuit, and make the indicator light bright; the stepped block can lock the deformed metal sheet at the upper position under the action of the contraction spring, permanent conduction is realized, and the damaged section can be quickly positioned through the bright light position after the disaster.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of connecting devices, more particularly to a fire smoke exhaust pipeline connecting device. BACKGROUND

[0002] The fire smoke exhaust pipeline is the core component of the building fire emergency system, and its connection reliability directly affects the smoke exhaust efficiency and personnel safety. The traditional pipeline adopts flange bolt connection, which needs to align multiple bolt holes and tighten step by step during installation, which is tedious and time-consuming. Especially in narrow space or high-altitude operation, the installation difficulty is multiplied. In addition, after the fire, it is difficult to quickly locate the damaged position inside the pipeline, and the whole line needs to be disassembled and inspected, which greatly increases the maintenance cost and time.

[0003] The existing connecting device has the following defects: first, the mechanical structure is complex (such as multi-bolt fastening), the installation efficiency is low and depends on manual experience, and the sealing failure is easily caused by uneven fastening; second, there is no damage indication mechanism after the disaster, and the weak point after the high-temperature smoke flushing cannot be intuitively identified, and the whole pipeline needs to be blindly disassembled during maintenance; third, the traditional thermal element (such as a fuse link) can only trigger a one-time alarm, and cannot retain the physical deformation mark to accurately locate the damaged section. For example, some connectors integrate temperature sensors, but need external power supply and cannot realize deformation self-locking, resulting in signal loss after the disaster. SUMMARY

[0004] In order to overcome the above-mentioned defects of the prior art, the present application provides a fire smoke exhaust pipeline connecting device, which realizes "pressing type" rapid installation through innovative clamping groove and one-way sliding structure, and triggers permanent circuit conduction at high temperature by using bimetallic thermal sensitive deformation coupling ladder locking mechanism, so as to mark the damage position by indicator light, thereby solving the problems in the above background art.

[0005] The present application provides the following technical scheme: a fire smoke exhaust pipeline connecting device, comprising a smoke exhaust pipeline, the smoke exhaust pipeline comprising a pipeline main body, a pipeline flange being welded on the pipeline main body, a clamping groove being formed on the side of the pipeline flange at the connection with the pipeline main body, a connecting assembly being installed on the clamping groove, both ends of the connecting assembly being fixedly connected with a connecting side frame through general bolts, the two connecting assemblies being connected through an extension assembly, and a sealing cover being installed on the connecting assembly.

[0006] Further, the connecting assembly is composed of two connecting main bodies, a sliding groove being formed in the inside of the connecting main body, an extension rod being installed in the inside of the sliding groove, a plurality of one-way teeth being formed on the bottom of the sliding groove and constituting a one-way moving structure with one-way reverse teeth, a clamping block being installed on the inside of the connecting main body, and the clamping block being made of rubber material.

[0007] Further, the connecting body is provided with a negative metal sheet at the top of the sliding groove, the other end of the negative metal sheet is installed in the battery groove, the battery groove is installed with a battery block, and the battery block is in electrical connection with the indicator lamp.

[0008] Further, the connecting side frame comprises a side clamping frame, a trapezoidal groove is formed in the front face of the side clamping frame, the trapezoidal groove has a trapezoidal structure, and the bottom groove width is smaller than the outer side groove width.

[0009] Further, the extension assembly comprises an extension rod, both ends of the extension rod are fixedly connected with double-layer metal sheets, contact balls are welded on the double-layer metal sheets, a plurality of one-way reverse teeth are fixedly connected to the bottom of the double-layer metal sheets, the side face of the extension assembly is connected with the stepped block through a guide rod, and a contraction spring is sleeved on the outer side of the guide rod.

[0010] Further, the double-layer metal sheets have a double-layer metal structure, the manganese-nickel-copper alloy and the invar steel are respectively used as the metal materials of the lower active layer and the upper passive layer.

[0011] Further, the stepped block has an upper layer and a lower layer, one end of the double-layer metal sheet is installed on the lower layer, the two sides of the stepped block are installed on the extension rod through the guide rod and the contraction spring, and the contraction spring exerts a pulling force on the stepped block.

[0012] Further, the lengths of the two ends of the clamping groove are the same as the width of the pipeline body, and the depth of the middle part of the clamping groove is smaller than the depths of the two ends.

[0013] Further, the connecting assemblies installed on the upper and lower parts of the pipeline body are different, the lower part has a simple structure, and the battery block and the double-layer metal sheet related structure are not installed in the inside, and only the extension rod is installed in the sliding groove.

[0014] The technical effects and advantages of the present application are as follows:

[0015] The extension assembly is provided, which is beneficial to bending the double-layer metal sheet (manganese-nickel-copper alloy / invar steel) upward by using high-temperature smoke in a fire, pushing the contact ball to contact the negative metal sheet to conduct the circuit, and making the indicator lamp light up.

[0016] The connecting assembly and the connecting side frame are provided, which are beneficial to the elastic cooperation of the clamping groove and the rubber clamping block, the sliding locking of the one-way tooth and the one-way reverse tooth of the connecting assembly, the realization of the "pressing and fixing" of the pipeline flange, the increase of the convenience of installation, the great reduction of the difficulty of connection and installation, and the increase of the flange end face fitting degree and the internal sealing effect when the bolt is fastened.

[0017] The present application is provided with a stepped block, which is beneficial to the stepped structure of the stepped block to isolate the contact point in normal temperature state, avoids the deformation of the contact ball and the negative metal sheet caused by long-term vibration or mechanical impact unrelated to fire, prevents false contact, and automatically switches to the locking layer after high-temperature deformation; when reset after the disaster, the stepped block is manually reset and the battery block is replaced, so that the device can be reused, and the maintenance cost is greatly reduced. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present application.

[0019] Figure 2 It is a schematic diagram of the smoke exhaust duct structure of the present application.

[0020] Figure 3 It is a schematic diagram of the assembly structure of the connecting assembly of the present application.

[0021] Figure 4 It is a schematic diagram of the connecting side frame structure of the present application.

[0022] Figure 5 It is a schematic diagram of the extension assembly structure of the present application.

[0023] Figure 6 It is a sectional view of the connecting assembly structure of the present application.

[0024] Figure 7 It is a schematic diagram of the attachment Figure 6 structure of the present application.

[0025] The reference signs are: 1, smoke exhaust duct; 101, duct body; 102, duct flange; 103, clamping groove; 2, connecting assembly; 201, connecting body; 202, clamping block; 203, negative metal sheet; 204, battery slot; 205, one-way tooth; 3, connecting side frame; 301, side clamping frame; 302, trapezoidal groove; 303, indicator light; 304, connecting hole; 4, extension assembly; 401, extension rod; 402, double-layer metal sheet; 403, contact ball; 404, one-way reverse tooth; 5, sealing cover; 6, universal bolt; 7, stepped block; 8, guide rod; 9, contraction spring; 10, battery block. DETAILED DESCRIPTION

[0026] The technical solutions in the present application will be described clearly and completely in combination with the drawings in the present application, and in addition, the forms of each structure described in the following embodiments are only examples, and all other embodiments obtained by those skilled in the art without creative labor belong to the scope of protection of the present application.

[0027] Reference Figures 1-3The application provides a fire-fighting smoke exhaust pipeline connecting device, which comprises a smoke exhaust pipeline 1, the smoke exhaust pipeline 1 comprises a pipeline main body 101, a pipeline flange 102 is welded on the pipeline main body 101, a clamping groove 103 is arranged at the connecting position of the pipeline flange 102 and the pipeline main body 101, a connecting assembly 2 is installed on the clamping groove 103, the two ends of the connecting assembly 2 are fixedly connected with a connecting side frame 3 through universal bolts 6, the two connecting assemblies 2 are connected through an extension assembly 4, and a sealing cover 5 is installed on the connecting assembly 2.

[0028] In the embodiment, it should be particularly pointed out that the length of the two ends of the clamping groove 103 is the same as the width of the pipeline main body 101, the depth of the middle part of the clamping groove 103 is smaller than the depth of the two ends, the clamping depth of the clamping block 202 after contraction is reduced, the clamping block 202 is convenient to disassemble, after disassembly and internal cleaning, whether the double-layer metal sheet 402 can be normally bent and used is detected, the ladder block 7 is moved, the battery block 10 is replaced, and the device can be repeatedly used.

[0029] The main difference between the embodiment and the prior art is that the connecting assembly 2 and the connecting side frame 3 are used for quick and convenient installation in the embodiment, meanwhile, the high-temperature smoke generated in a fire makes the double-layer metal sheet 402 deform, the ladder block 7 is used to make the double-layer metal sheet 402 irreversibly deform, a permanent circuit is conducted, the indicator lamp 303 is used to provide line indication and maintenance indication, and is used for post-disaster maintenance, and the difference is specifically that the connecting assembly 2, the connecting side frame 3 and the extension assembly 4.

[0030] The above structure is the main structure of the embodiment, the problems that the fire-fighting smoke exhaust pipeline is difficult to install, post-disaster maintenance is complicated and accurate indication cannot be realized are solved, and the smoke suction pump is a prior structure, and the specific structure and connection mode of the smoke suction pump are not described herein.

[0031] Reference Figure 2 With 6 -7, the connecting assembly 2 is composed of two connecting main bodies 201, a sliding groove is arranged in the connecting main body 201, the extension rod 401 is installed in the sliding groove, a plurality of one-way teeth 205 are arranged at the bottom of the sliding groove and form a one-way movement structure with the one-way reverse teeth 404, the inner side of the connecting main body 201 is provided with the clamping block 202, the clamping block 202 is made of rubber material, is beneficial to deformation during installation, is convenient to install, and can play a good sealing effect after clamping.

[0032] In this embodiment, it needs to be specifically pointed out that: the connecting body 201 is located at the top of the sliding groove and is provided with a negative metal sheet 203, the other end of the negative metal sheet 203 is installed in the inside of a battery groove 204, the inside of the battery groove 204 is installed with a battery block 10, the battery block 10 is in an electrically connected relationship with an indicator lamp 303, the indicator lamp 303 is started when the negative metal sheet 203 is in communication with the contact ball 403, the position of the smoke and the internal sealing material to be replaced can be judged by the indicator lamp 303, since the bending of the double-layer metal sheet 402 at this time makes the one-way reverse tooth 404 and the one-way tooth 205 staggered, the two connecting bodies 201 can be easily closed and disassembled.

[0033] With reference to Figure 4 The connecting side frame 3 comprises a side clamping frame 301, the front surface of the side clamping frame 301 is provided with a trapezoidal groove 302, the trapezoidal groove 302 is a trapezoidal structure, the bottom groove width is smaller than the outer side groove width, so that when the trapezoidal groove 302 is sleeved on the pipeline flange 102, the fitting effect between the pipeline flanges 102 can be increased by the installation of the general bolt 6, the sealing capacity is increased, the trapezoidal groove 302 makes the side clamping frame 301 not directly contact the connecting assembly 2 to affect the installation position, the connecting side frame 3 is installed on the connecting assembly 2 by the general bolt 6 through the connecting hole 304, and the clamping effect between the two pipeline flanges 102 is better due to the existence of the trapezoidal groove 302.

[0034] In this embodiment, it needs to be specifically pointed out that: the indicator lamp 303 and the connecting assembly 2 are in an electrically connected relationship, when high temperature occurs, the double-layer metal sheet 402 is bent to make the contact ball 403 in communication with the negative metal sheet 203, and the electric signal transmits to control the starting of the indicator lamp 303, wherein the installation of the line belongs to the prior art, and the installation mode of the line between the battery block 10 and the indicator lamp 303 and the negative metal sheet 203 and the double-layer metal sheet 402 is not limited herein.

[0035] With reference to Figure 5 The extension assembly 4 comprises an extension rod 401, both ends of the extension rod 401 are fixedly connected with a double-layer metal sheet 402, the double-layer metal sheet 402 is welded with a contact ball 403, the bottom of the double-layer metal sheet 402 is fixedly connected with a plurality of one-way reverse teeth 404, the side surface of the extension assembly 4 is connected with the stepped block 7 through a guide rod 8, the outer side of the guide rod 8 is sleeved with a contraction spring 9, the end of the double-layer metal sheet 402 enters the upper layer of the stepped block 7, so that when the indicator lamp 303 is permanently started, the stepped block 7 is fixed and supported on the double-layer metal sheet 402 under the action of the guide rod 8 and the contraction spring 9, and the double-layer metal sheet 402 is prevented from being lowered and disconnected from the contact ball 403 and the negative metal sheet 203 after cooling.

[0036] In this embodiment, it needs to be specifically pointed out that: the double-layer metal sheet 402 is a double-layer metal structure, and the metal materials of the lower active layer and the upper passive layer are manganese-nickel-copper alloy and invar steel respectively, so as to facilitate the upward bending.

[0037] Referring to Figures 6-7 , due to the high buoyancy of the flue gas, the flue gas will be transported along the top, and in order to reduce the use cost of the device, the connection assemblies 2 installed on the upper and lower parts of the pipeline body 101 are different, the lower part is a simple structure, and the inside is not installed with the battery block 10 and the double-layer metal sheet 402 related structure, only the extension rod 401 is installed in the sliding groove.

[0038] Referring to Figure 5 and Figure 7 , the stepped block 7 is in a stepped shape and has an upper layer and a lower layer, one end of the double-layer metal sheet 402 is installed in the lower layer, so as to avoid the deformation caused by long-term vibration or mechanical impact unrelated to fire, which may cause the contact ball 403 to be in contact with the negative metal sheet 203, has the effect of preventing false touch, and after the double-layer metal sheet 402 is bent, one end of the double-layer metal sheet 402 enters the upper layer, realizes permanent change, and makes the connection between the contact ball 403 and the negative metal sheet 203 stable, and the bending of the double-layer metal sheet 402 makes the one-way reverse tooth 404 and the one-way tooth 205 staggered, so that the two connection bodies 201 can be easily combined and disassembled.

[0039] In this embodiment, it needs to be specifically pointed out that: the two sides of the stepped block 7 are installed on the extension rod 401 through the guide rod 8 and the contraction spring 9, the contraction spring 9 applies a pulling force to the stepped block 7, so that one end of the double-layer metal sheet 402 is tightly attached to the lower layer of the stepped block 7, and the double-layer metal sheet 402 automatically enters the upper layer after being bent.

[0040] The main problem solved by the embodiment is: the connection assembly 2 and the connection side frame 3 are used to realize quick and convenient installation, the high-temperature flue gas generated by fire is used to make the double-layer metal sheet 402 deform, the stepped block 7 is used to make it irreversible deformation, and the permanent circuit is used to provide line indication and maintenance indication by using the indicator light 303, which is used for post-disaster maintenance, solves the problems that the current fire smoke exhaust pipeline is difficult to install, the post-fire disaster maintenance is more complicated, and the accurate guidance cannot be realized.

[0041] A convenient installation and use method of a fire smoke exhaust pipeline connection device, the specific steps are as follows:

[0042] Press the combined connection assembly 2 on the pipeline flange 102, with the clamping block 202 entering the pipeline flange 102, the connection assembly 2 completes the horizontal fixation, and then pulls the two connection assemblies 2 outward until the maximum distance, the two connection assemblies 2 cannot be reversely combined under the action of the extension assembly 4, and always maintain the maximum distance;

[0043] Then install the connecting side frame 3 on the side pipe flange 102, because the two connecting side frames 3 are provided with trapezoidal grooves 302, the side clamping frame 301 will not directly contact the connecting assembly 2 to affect its installation position, at this time, the connecting side frame 3 is installed on the connecting assembly 2 by the general bolt 6 through the connecting hole 304, because of the existence of the trapezoidal groove 302, the clamping effect between the two pipe flanges 102 is better;

[0044] After the installation is completed, when a fire occurs, the high-temperature smoke is discharged to the outside through the pipe body 101 under the action of the external smoke suction pump, the high temperature of the smoke makes the double-layer metal sheet 402 bend upward, the bending makes the contact ball 403 contact with the negative metal sheet 203, at this time, the indicator light 303 starts, at the same time, the end of the double-layer metal sheet 402 enters the upper layer of the stepped block 7, so that the indicator light 303 is permanently started, the stepped block 7 fixes and supports the double-layer metal sheet 402 under the action of the guide rod 8 and the contraction spring 9, so as to avoid the double-layer metal sheet 402 from descending and disconnecting the contact ball 403 and the negative metal sheet 203 after cooling;

[0045] After the fire is over, the user judges the smoke direction and the position of the internal sealing material to be replaced through the indicator light 303, because the bending of the double-layer metal sheet 402 makes the one-way reverse tooth 404 and the one-way tooth 205 staggered at this time, the two connecting bodies 201 can be easily closed and disassembled, after cleaning the inside, it is detected whether the double-layer metal sheet 402 can be normally bent and used, the stepped block 7 is moved, and the battery block 10 is replaced, so that the device can be reused.

[0046] The above only describes the preferred embodiments of the present application and is not used to limit the present application, any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. A fire service smoke evacuation conduit connection device comprising a smoke evacuation conduit (1), characterised in that: The smoke exhaust duct (1) comprises a duct main body (101), a duct flange (102) is welded on the duct main body (101), a clamping groove (103) is formed at the connecting position of the duct flange (102) and the duct main body (101), a connecting assembly (2) is installed on the clamping groove (103), the two ends of the connecting assembly (2) are fixedly connected with a connecting side frame (3) through universal bolts (6), the two connecting assemblies (2) are connected through an extension assembly (4), and a sealing cover (5) is installed on the connecting assembly (2). The connecting assembly (2) is composed of two connecting main bodies (201), the connecting main body (201) is internally provided with a sliding groove, an extension rod (401) is installed in the sliding groove, a plurality of one-way teeth (205) are formed in the bottom of the sliding groove, and the one-way teeth (205) and one-way reverse teeth (404) form a one-way movement structure, a clamping block (202) is installed on the inner side of the connecting main body (201), and the clamping block (202) is made of rubber. The connecting main body (201) is provided with a negative metal sheet (203) at the top of the sliding groove, one end of the negative metal sheet (203) is installed in a battery groove (204), a battery block (10) is installed in the battery groove (204), and the battery block (10) is in electrical connection with an indicator lamp (303). The connecting side frame (3) comprises a side clamping frame (301), a trapezoidal groove (302) is formed in the front of the side clamping frame (301), the trapezoidal groove (302) is a trapezoidal structure, and the bottom groove width is smaller than the outer side groove width. The extension assembly (4) comprises an extension rod (401), the two ends of the extension rod (401) are fixedly connected with double-layer metal sheets (402), contact balls (403) are welded on the double-layer metal sheets (402), a plurality of one-way reverse teeth (404) are fixedly connected to the bottom of the double-layer metal sheets (402), the side surface of the extension assembly (4) is connected with a stepped block (7) through a guide rod (8), and the outer side of the guide rod (8) is sleeved with a contraction spring (9). The stepped block (7) is in a stepped shape and has an upper layer and a lower layer, one end of the double-layer metal sheet (402) is installed on the lower layer, the two sides of the stepped block (7) are installed on the extension rod (401) through the guide rod (8) and the contraction spring (9), and the contraction spring (9) exerts a pulling force on the stepped block (7). The lengths of the two ends of the clamping groove (103) are the same as the width of the duct main body (101), and the middle part of the clamping groove (103) is shallower than the two ends.

2. A fire service smoke control duct coupling according to claim 1, wherein: The double-layer metal sheets (402) are double-layer metal structures, and the manganese-nickel-copper alloy and the nickel steel are respectively used as the metal materials of the active layer of the lower layer and the passive layer of the upper layer.

3. A fire service smoke control duct coupling according to claim 1, wherein: The connecting assemblies (2) installed on the upper and lower parts of the duct main body (101) are different, the lower part is not internally provided with the battery block (10) and the double-layer metal sheet (402) structure, and only the extension rod (401) is installed in the sliding groove.

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