Low-smoke detection device with dynamic probe protection structure

Abstract

The invention relates to the technical field of wire and cable detection, in particular to a low-smoke detection device with a dynamic probe protection structure, which comprises a detection box, the right side wall of the detection box is provided with a cable inlet, and the inner wall of the detection box is fixedly connected with a guide groove; a mounting frame is welded on the inner bottom wall of the detection box; a dynamic composite cover protection assembly for protecting the probe and preventing the cable from being out of control in combustion is mounted on the mounting frame; the cable combustion is limited in a relatively closed small space through the two protective covers, so that the out-of-control combustion reaction can be effectively avoided, and the safety of low-smoke detection is enhanced; and the partition plate is arranged, so that the detection probe can be blocked and protected in the cable combustion process, the probe is prevented from being easily damaged, and the service life of the probe is prolonged.

Description

Technical Field

[0001] The present invention relates to the technical field of wire and cable detection, and in particular to a low-smoke detection device with a dynamic probe protection structure. Background Art

[0002] Fires involving wires and cables can pose a significant threat to public safety, necessitating the use of low-smoke, halogen-free cables in many projects. These cables are manufactured from a rubber compound free of halogens (F, Cl, Br, I, and At) and environmentally friendly substances such as lead, cadmium, chromium, and mercury, and do not emit toxic fumes when burned. After the cables are manufactured, they must undergo a combustion test. This test is crucial for evaluating their low-smoke performance. Wire and cable smoke density detection devices are designed to measure the concentration of smoke emitted when a cable burns under specific conditions.

[0003] However, since existing low-smoke detection devices generally do not have a probe protection structure, when performing low-smoke detection on cables and wires through combustion, the probe is easily damaged due to high temperature, flames, etc., thereby affecting the normal use of the detection device.

[0004] Therefore, it is urgent to improve this shortcoming. The present invention studies and improves the existing structure and shortcomings, and provides a low-smoke detection device with a dynamic probe protection structure. Summary of the Invention

[0005] The purpose of the present invention is to provide a low smoke detection device with a dynamic probe protection structure to address the defects and shortcomings of the existing technology.

[0006] The present invention discloses a low-smoke detection device with a dynamic probe protection structure, comprising a detection box, a cable inlet being provided on the right side wall of the detection box, and a guide groove being fixedly connected to the inner wall of the detection box; a mounting bracket being welded to the inner bottom wall of the detection box; and a protection probe and a dynamic composite cover protection assembly for preventing uncontrolled cable combustion being mounted on the mounting bracket.

[0007] The dynamic composite cover protection assembly includes an ignition spray gun fixedly mounted on the top of the mounting frame, a sensing element fixedly mounted on the outer wall of the ignition spray gun, two drive assemblies arranged on the left and right sides of the detection box, and two protective covers respectively connected to the corresponding drive assemblies;

[0008] The inner wall of the protective cover is fixedly connected with a partition plate, and the inner top wall of the protective cover is fixedly connected with an electric push rod, one end of the electric push rod is fixedly connected with a detection probe, the two protective covers are horizontally opposite to each other, the two protective covers are driven to close by the two drive assemblies, the inner wall of the lower through groove of the protective cover touches the sensing element, thereby triggering the ignition lance to perform ignition operation, the protective cover cuts off external oxygen, and the flame-retardant ring in the protective cover assists in terminating combustion, controls the combustion reaction, and protects the detection probe.

[0009] Further, the drive assembly comprises a motor, a bidirectional screw rod, a movable block and a limiting frame, the output shaft of the motor is fixedly connected with the bidirectional screw rod through a shaft coupling, the outer wall of the bidirectional screw rod is threadedly connected with the movable block, the bidirectional screw rod and the movable block form a through structure, the limiting frame is welded to the inner wall of the detection box, the limiting frame is arranged on the outer side of the movable block, and the inner surface of the limiting frame is attached to the outer surface of the movable block.

[0010] Further, the drive assembly further comprises a connecting piece, a heat insulation plate and a guide block, one end of the connecting piece is connected with the movable block, the other end of the connecting piece is connected with the heat insulation plate, and the side, away from the protective cover, of the heat insulation plate is fixedly connected with the guide block.

[0011] Further, the connecting piece comprises a linkage rod, a movable shaft one and a movable shaft two, one end of the linkage rod is movably connected with the outer wall of the movable block through the movable shaft one, and the other end of the movable shaft one is movably connected with one side of the heat insulation plate through the movable shaft two.

[0012] Further, the heat insulation plate forms a sliding structure with the guide groove through the guide block, the outer surface of the guide block is attached to the inner surface of the guide groove, and the outer dimension of the guide block is completely consistent with the inner dimension of the guide groove.

[0013] Further, the protective cover comprises a cover shell, an upper through groove, a lower through groove and a flame-retardant ring, the top of the cover shell is provided with the upper through groove, the bottom of the cover shell is provided with the lower through groove, and the sidewall of the cover shell is embeddedly installed with the flame-retardant ring.

[0014] Further, the outer wall of the bidirectional screw rod is sleeved with a gear, the outer side of the gear is meshingly connected with a transmission chain, and the two bidirectional screw rods are connected through the gear and the transmission chain.

[0015] The application provides a low-smoke detection device with a dynamic probe protection structure, which has the following advantages

[0016] Advantages:

[0017] 1、The utility model sets up drive assembly, rotates two -way screw through motor, cooperates the limit stopper and moves the track's limitation of movable block, with two movable blocks on same movable block can move towards under the rotation drive of two -way screw, thereby drive heat insulating plate and protective cover move in the middle, similarly, another two -way screw rotates through the engagement transmission of gear and transmission chain, thereby drive another protective cover move in the middle, the cable combustion is limited in a relatively closed small space through two protective covers, can effectively avoid the out of control of combustion reaction, enhance the security of low smoke nature detection.

[0018] 2、The utility model sets up inductive piece, in order to utilize the inner wall of lower through slot and touch inductive piece when two protective covers merge and complete, then trigger ignition lance and carry out ignition operation, and cut off outside oxygen through protective cover, cooperate with fire -retardant ring and assist to terminate combustion, help strict control combustion reaction, protect detection probe from being damaged by high temperature or flame, and set up partition, can play the blocking protection effect to detection probe in the cable combustion process, further improve the protection effect to detection probe, the improved detection device has probe protection structure, can play the good protection effect to probe in the detection process, thereby avoid the easy damage of probe, be favorable to prolong the service life of probe. DRAWINGS

[0019] The drawings described herein are used to provide further understanding of the present application, constitute a part of the application, but do not constitute undue limitation to the present application, in the drawings:

[0020] Figure 1 It is the left side cross section structure schematic drawing of the detection box of the utility model;

[0021] Figure 2 It is the detection operation schematic drawing of the utility model;

[0022] Figure 3 It is the two -way screw-guide groove three -dimensional schematic diagram of the utility model;

[0023] Figure 4 It is the protective cover three -dimensional structure schematic diagram of the utility model;

[0024] Figure 5 It is the three -dimensional structure schematic diagram of the utility model;

[0025] Figure 6 It is the water tank right cross section structure schematic diagram of the utility model;

[0026] Drawings Mark Explanation:

[0027] 1. Test box; 2. Cable inlet; 3. Mounting bracket; 4. Ignition spray gun; 5. Induction component; 6. Guide groove; 7. Drive assembly; 701. Motor; 702. Bidirectional screw; 703. Movable block; 704. Limiting bracket; 705. Connecting piece; 7051. Linking rod; 7052. Active shaft 1; 7053. Active shaft 2; 706. Heat shield; 707. Guide block; 8. Protective cover; 801. Cover; 802. Upper through groove; 803. Lower through groove Groove; 804, flame retardant ring; 9, gear; 10, transmission chain; 11, partition plate; 12, electric push rod; 13, detection probe; 14, exhaust assembly; 1401, exhaust fan; 1402, exhaust pipe; 1403, air supply pipe; 15, filter assembly; 1501, water tank; 1502, water outlet pipe; 1503, connecting cover; 1504, filter cylinder; 1505, extension pipe; 1506, outlet pipe; 1507, activated carbon filter cylinder. DETAILED DESCRIPTION

[0028] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. The exemplary embodiments and descriptions are only used to explain the present invention but are not intended to limit the present invention.

[0029] like Figures 1-4 As shown, the low-smoke detection device with a dynamic probe protection structure described in this specific embodiment includes a detection box 1, a cable inlet 2 is opened on the right side wall of the detection box 1, and a guide groove 6 is fixedly connected to the inner wall of the detection box 1; a mounting bracket 3 is welded to the inner bottom wall of the detection box 1; and the mounting bracket 3 is mounted with a protection probe and a dynamic composite cover protection component to prevent uncontrolled cable combustion.

[0030] The dynamic composite cover protection assembly includes an ignition gun 4 fixedly mounted on the top of a mounting frame 3, a sensing element 5 fixedly mounted on the outer wall of the ignition gun 4, two drive assemblies 7 arranged on the left and right sides of the detection box 1, and two protective covers 8 connected to the drive assemblies 7 at the corresponding positions.

[0031] The inner wall of the protective cover 8 is fixedly connected with a partition plate 11, and the inner top wall of the protective cover 8 is fixedly connected with an electric push rod 12, and one end of the electric push rod 12 is fixedly connected with a detection probe 13. The two protective covers 8 are in a horizontally facing structure, and the two protective covers 8 are driven to close by two driving components 7. At the same time, the inner wall of the lower through groove of the protective cover 8 is used to touch the sensing part 5, thereby triggering the ignition gun to perform the ignition operation, and the protective cover is used to isolate the external oxygen, and cooperate with the flame retardant ring in the protective cover 8 to assist in terminating the combustion, control the combustion reaction, and protect the detection probe.

[0032] Further, the driving assembly 7 comprises a motor 701, a bidirectional screw rod 702, a movable block 703 and a limiting frame 704, the output shaft of the motor 701 is fixedly connected with the bidirectional screw rod 702 through a shaft coupling, the outer wall of the bidirectional screw rod 702 is threadedly connected with the movable block 703, and the bidirectional screw rod 702 and the movable block 703 form a through structure, and the limiting frame 704 is welded on the inner wall of the detection box 1 and is arranged at the outer side of the movable block 703, and the inner surface of the limiting frame 704 is attached to the outer surface of the movable block 703.

[0033] Further, the driving assembly 7 further comprises a connecting piece 705, a heat insulation plate 706 and a guide block 707, one end of the connecting piece 705 is connected with the movable block 703, the other end of the connecting piece 705 is connected with the heat insulation plate 706, and the side, away from the protective cover 8, of the heat insulation plate 706 is fixedly connected with the guide block 707.

[0034] Further, the connecting piece 705 comprises a linkage rod 7051, a movable shaft one 7052 and a movable shaft two 7053, one end of the linkage rod 7051 is movably connected with the outer wall of the movable block 703 through the movable shaft one 7052, and the other end of the movable shaft one 7052 is movably connected with one side of the heat insulation plate 706 through the movable shaft two 7053.

[0035] Further, the heat insulation plate 706 forms a sliding structure with the guide groove 6 through the guide block 707, the outer surface of the guide block 707 is attached to the inner surface of the guide groove 6, and the outer dimension of the guide block 707 is completely consistent with the inner dimension of the guide groove 6.

[0036] Further, the protective cover 8 comprises a cover shell 801, an upper through groove 802, a lower through groove 803 and a fire-resistant ring 804, the top of the cover shell 801 is provided with the upper through groove 802, the bottom of the cover shell 801 is provided with the lower through groove 803, and the sidewall of the cover shell 801 is embeddedly installed with the fire-resistant ring 804.

[0037] Further, the outer wall of the bidirectional screw rod 702 is sleeved with a gear 9, the outer side of the gear 9 is meshedly connected with a transmission chain 10, and the two bidirectional screw rods 702 are connected through the gear 9 and the transmission chain 10.

[0038] The working principle of the present application is as follows: one end of the cable to be detected is inserted into the detection box 1 from the cable inlet 2, and then the motor 701 is started, the bidirectional screw rod 702 is driven to rotate by the motor 701, and the movable block 703 is limited in movement track by the limiting frame 704, so that the two movable blocks 703 on the same movable block 703 can move towards each other under the rotation driving of the bidirectional screw rod 702.

[0039] Then the heat insulation plate 706 moves towards the connection piece 705, and the connection piece 705 and the heat insulation plate 706 move, and the guide groove 6 and the guide block 707 limit the movement track of the heat insulation plate 706, so that the heat insulation plate 706 can move to the center, and the two-way lead screw 702 drives the other two-way lead screw 702 to rotate through the meshing transmission of the gear 9 and the transmission chain 10, so that the other heat insulation plate 706 moves to the center, and the two protective covers 8 are combined into a whole through the movement of the two heat insulation plates 706, and the to-be-detected cable is clamped and fixed by the fireproof ring 804.

[0040] The cable end passes through the fireproof ring 804 and is located in the protective cover 8, and in this process, the inner wall of the lower through groove 803 just contacts the sensing part 5 when the two protective covers 8 are combined, so as to trigger the ignition lance 4 to perform ignition operation, ignite one end of the cable, and when the oxygen in the protective cover 8 is consumed, the burning is automatically ended, or when the cable burns to the fireproof ring 804, the burning is also stopped due to the blocking of the fireproof ring 804.

[0041] After the cable burning is completed, the gas generated by the burning is limited in the protective cover 8, and then the detection probe 13 is driven to move downward by the electric push rod 12, and the gas composition in the protective cover 8 is detected by the detection probe 13, the gas generated by the burning is prevented from escaping through the protective cover 8, the accuracy of the gas composition is improved, the cable burning is limited in a relatively closed small space, the burning reaction is effectively prevented from being out of control, the safety of the low-smoke detection is enhanced, the detection probe 13 is also protected from being damaged by high temperature or flame, and the protection effect of the detection probe 13 is further improved due to the blocking of the partition plate 11 during the burning process.

[0042] In the present application, as shown in the drawings, the suction assembly 14 is fixedly installed on the top of the detection box 1, and the filter assembly 15 is fixedly connected to the left outer wall of the detection box 1. Figures 5-6 The combustion products in the protective cover are sucked out along the suction pipe by the suction fan, and are sent into the extension pipe along the gas sending pipe, so that the combustion products are dissolved and removed by water in the water tank, and the insoluble solid combustion products are filtered by the filter screen cylinder, and the excess gas is discharged after being adsorbed and filtered. The improved detection device has a combustion product treatment function, can automatically treat the combustion products after the cable detection is completed, has a good treatment effect, reduces the artificial burden, avoids the workers from inhaling harmful smoke and affecting health, helps to quickly start the next round of detection work, and avoids the pollution of harmful smoke to the air environment. This is reflected in the prior application patent.

[0043] The air extraction assembly 14 in the design comprises an air extractor 1401, an air extraction pipe 1402 and an air supply pipe 1403, the air extraction pipe 1402 is fixedly connected to the air inlet of the air extractor 1401, one end of the air extraction pipe 1402 penetrates through the top of the detection box 1 and extends into the detection box 1, and the air supply pipe 1403 is fixedly connected to the air outlet of the air extractor 1401.

[0044] The filter assembly 15 in the design comprises a water tank 1501, a water outlet pipe 1502, a connecting cover 1503, a filter screen cylinder 1504 and an extension pipe 1505, the water outlet pipe 1502 is fixedly connected to the outer wall of the water tank 1501, the connecting cover 1503 is fixedly connected to the top of the water tank 1501, the bottom of the connecting cover 1503 is fixedly connected to the filter screen cylinder 1504, the top of the connecting cover 1503 is connected to the extension pipe 1505, and the top end of the extension pipe 1505 is connected to one end of the air supply pipe 1403 through a bearing. The filter assembly 15 further comprises an air outlet pipe 1506 and an activated carbon filter cylinder 1507, one end of the air outlet pipe 1506 is connected to the outer wall of the water tank 1501, and the other end of the air outlet pipe 1506 is connected to the activated carbon filter cylinder 1507 through a bearing.

[0045] The specific operation process is as follows: after the cable detection is completed, the air extractor 1401 is started, the combustion products in the protective cover 8 are extracted along the air extraction pipe 1402, and then are sent into the extension pipe 1505 along the air supply pipe 1403, and then are sent into the water along the extension pipe 1505, the water in the water tank 1501 is used to dissolve and remove the soluble combustion products, the filter screen cylinder 1504 is used to filter the insoluble solid combustion products, the gas filtered by the water and the filter screen cylinder 1504 is sent into the activated carbon filter cylinder 1507 along the air outlet pipe 1506, and then is discharged after being adsorbed and filtered by the activated carbon in the activated carbon filter cylinder 1507. Through the cooperation of the air extraction assembly 14 and the filter assembly 15, the combustion products can be filtered and treated, not only the ash and gas generated by combustion can be treated, but also the treatment effect is good, the artificial burden is reduced, the next round of detection work can be quickly carried out, the air environment is avoided from being polluted by harmful smoke, and the health of the workers is avoided from being affected by inhaling harmful smoke.

[0046] The above description is only the preferred embodiment of the present application, and any equivalent changes or modifications made according to the characteristics and principles described in the patent application scope of the present application are included in the patent application scope of the present application.

Claims

1. A low-smoke detection device with a dynamic probe protection structure, comprising a detection box (1), a cable inlet (2) being provided on the right side wall of the detection box (1), a guide groove (6) being fixedly connected to the inner wall of the detection box (1); and a mounting bracket (3) being welded to the inner bottom wall of the detection box (1); Its characteristics are: The mounting frame (3) is provided with a protection probe and a dynamic composite cover protection component for preventing the cable from burning out of control; the dynamic composite cover protection component comprises an ignition spray gun (4) fixedly mounted on the top of the mounting frame (3), a sensing element (5) fixedly mounted on the outer wall of the ignition spray gun (4), two drive assemblies (7) arranged on the left and right sides of the detection box (1), and two protective covers (8) connected to the drive assemblies (7) at the corresponding positions; the inner wall of the protective cover (8) is fixedly connected with a partition plate (11), and the protective cover (8) is fixedly connected with a partition plate (11). The inner top wall of the protective cover (8) is fixedly connected to an electric push rod (12), and one end of the electric push rod (12) is fixedly connected to a detection probe (13). The two protective covers (8) are in a horizontally facing structure. The two protective covers (8) are driven to close by two driving components (7). At the same time, the inner wall of the lower through groove of the protective cover (8) is used to touch the sensing element (5), thereby triggering the ignition gun to perform an ignition operation, and isolating the external oxygen through the protective cover, cooperating with the flame retardant ring in the protective cover (8) to assist in terminating combustion, controlling the combustion reaction, and protecting the detection probe.

2. The low smoke detection device with a dynamic probe protection structure according to claim 1, characterized in that: The driving assembly (7) comprises a motor (701), a bidirectional lead screw (702), a movable block (703) and a limiting frame (704), wherein the output shaft of the motor (701) is fixedly connected to the bidirectional lead screw (702) via a coupling, and the outer wall of the bidirectional lead screw (702) is threadedly connected to the movable block (703), and the bidirectional lead screw (702) and the movable block (703) form a through structure, and the limiting frame (704) is welded to the inner wall of the detection box (1), and the limiting frame (704) is arranged on the outer side of the movable block (703), and the inner surface of the limiting frame (704) is in contact with the outer surface of the movable block (703).

3. The low smoke detection device with a dynamic probe protection structure according to claim 1, characterized in that: The driving assembly (7) further comprises a connecting member (705), a heat insulating plate (706) and a guide block (707), wherein one end of the connecting member (705) is connected to the movable block (703), and the other end of the connecting member (705) is connected to the heat insulating plate (706), and the guide block (707) is fixedly connected to the side of the heat insulating plate (706) away from the protective cover (8).

4. The low smoke detection device with a dynamic probe protection structure according to claim 3, characterized in that: The connecting member (705) includes a connecting rod (7051), a movable shaft 1 (7052) and a movable shaft 2 (7053), and one end of the connecting rod (7051) is movably connected to the outer wall of the movable block (703) through the movable shaft 1 (7052), and the other end of the movable shaft 1 (7052) is movably connected to one side of the insulation board (706) through the movable shaft 2 (7053).

5. The low smoke detection device with a dynamic probe protection structure according to claim 4, characterized in that: The heat insulation plate (706) forms a sliding structure with the guide block (707) and the guide groove (6), and the outer surface of the guide block (707) fits the inner surface of the guide groove (6), and the outer dimensions of the guide block (707) completely match the inner dimensions of the guide groove (6).

6. The low smoke detection device with a dynamic probe protection structure according to claim 1, characterized in that: The protective cover (8) comprises a cover shell (801), an upper through groove (802), a lower through groove (803) and a flame retardant ring (804), wherein the top of the cover shell (801) is provided with an upper through groove (802), the bottom of the cover shell (801) is provided with a lower through groove (803), and the side wall of the cover shell (801) is fitted with a flame retardant ring (804).

7. The low smoke detection device with a dynamic probe protection structure according to claim 2, characterized in that: The outer wall of the bidirectional lead screw (702) is sleeved with a gear (9), and the outer side of the gear (9) is meshedly connected with a transmission chain (10), and the two bidirectional lead screws (702) are kept connected through the gear (9) and the transmission chain (10).

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