Detection device for fire-fighting temperature sensing cable

Abstract

The utility model discloses a detection device for a fire-fighting temperature sensing cable, which belongs to the technical field of fire fighting, and comprises a support base, a buckling pressure plate and a thermometer, and one end of the support base is provided with a heating mechanism; one side of the buckling pressing plate is hinged to one side of the supporting base through a hinge mechanism, and the buckling pressing plate can press the temperature sensing cable on the heating mechanism in a buckling mode. The temperature instrument is arranged at one end of the supporting base and comprises a power switch and a temperature controller, and the temperature controller is electrically connected with a temperature measuring resistor arranged on the heating mechanism through a cable. The detection device is small in size, convenient to carry, labor-saving, safe and reliable, and detection operation can be completed by one person; the temperature-sensing cable has a charging function, does not need an external power supply, is flexible in temperature setting, is convenient and reliable to place, and can achieve rapid temperature rise, thereby improving the detection efficiency and convenience of the temperature-sensing cable.

Description

Technical Field

[0001] The utility model relates to the technical field of fire protection, in particular to a detection device for fire protection temperature sensing cables. Background Art

[0002] Temperature sensing cable is a kind of fire sensor for fire alarm system, generally used for fire detection of electrical equipment, such as transformers and cables. According to fire management requirements, temperature sensing cables should be inspected and tested regularly. The current detection methods mainly use boiling water immersion and flame heating. When using these methods, the heating temperature is often uncontrollable, and flame heating can easily damage the temperature sensing cable. In addition, when used for fixed installation of temperature sensing cables, they often need to be unfixed during detection, which leads to problems such as cumbersome detection and long time. Utility Model Content

[0003] Technical problem solved by the utility model: In view of the problem of inconvenience in periodic detection of temperature-sensing cables in the prior art, the utility model provides a detection device for fire-fighting temperature-sensing cables, which improves the detection efficiency and convenience of temperature-sensing cables.

[0004] Technical solution: The utility model discloses a detection device for fire-fighting temperature-sensing cables, the detection device comprising:

[0005] A support base, wherein a heating mechanism is provided at one end of the support base;

[0006] A buckling pressure plate, one side of which is hingedly connected to one side of the support base through a hinge mechanism, and the buckling pressure plate can buckle and press the temperature sensing cable onto the heating mechanism;

[0007] The thermometer is arranged at one end of the support base, and the thermometer comprises a power switch and a temperature controller, and the temperature controller is electrically connected to a temperature measuring resistor arranged on the heating mechanism through a cable.

[0008] Preferably, the heating mechanism comprises a first mounting groove opened at one end of the support base and a first PTC heating plate accommodated in the first mounting groove;

[0009] The bottom surface of the buckling pressure plate is provided with a second mounting groove corresponding to the first mounting groove, and the second mounting groove accommodates the second PTC heating sheet corresponding to the first PTC heating sheet.

[0010] Preferably, thermally conductive silicone sheets are respectively provided on the corresponding bonding surfaces of the first PTC heating sheet and the second PTC heating sheet.

[0011] Preferably, a battery pack electrically connected to the temperature meter and a power controller connected to the battery pack are provided on the support base, and a power indicator light is provided on the power controller.

[0012] Preferably, a safety link is hingedly connected to one side of the support base, and a locking slot is provided at the distal end of the safety link;

[0013] The side surface of the buckling pressure plate is provided with a locking rod corresponding to the safety link. The buckling pressure plate is opened by a hinge mechanism and buckled on the locking rod through a locking slot of the safety link.

[0014] Preferably, a limit slot is provided on the central back side of the safety link;

[0015] A limit pin is arranged on the side wall of the support base, and the safety link is supported on the limit pin through a limit slot to keep the safety link in a storage state.

[0016] Preferably, the hinge mechanism is a self-resetting hinge, and the hinge mechanism drives the buckling pressure plate to automatically press on the support base.

[0017] Compared with the prior art, the utility model has at least the following beneficial effects:

[0018] The detection device of the utility model is small in size, easy to carry, saves manpower, is safe and reliable, and one person can complete the detection operation; it has a charging function, does not require an external power supply, has flexible temperature settings, and is convenient and reliable for placing temperature measuring cables, and can achieve rapid heating, thereby improving the detection efficiency and convenience of temperature sensing cables. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the structure of the detection device of the utility model;

[0020] Figure 2 for Figure 1 Schematic diagram of the structure of the middle buckle pressing plate in the open state;

[0021] Figure 3 for Figure 2 Schematic diagram of the detection state structure of the temperature sensing cable in the detection device;

[0022] Figure 4 This is a control circuit diagram of the detection device of the utility model.

[0023] : 100, detection device; 1, support base; 101, first mounting slot; 102, limit pin; 2, hinge mechanism; 3, snap-fit ​​pressure plate; 301, second mounting slot; 302, locking rod; 4, first PTC heating plate; 5, second PTC heating plate; 6, temperature sensing cable; 7, thermally conductive silicone sheet; 8, temperature measuring resistor; 9, cable; 10, thermometer; 11, power switch; 12, battery pack; 13, power controller; 131, power indicator light; 14, safety link; 141, limit slot; 142, locking slot. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical scheme and advantages of the embodiments of the present invention clearer, the following will be combined with the attached Figures 1 to 4 The technical scheme of the embodiment of the utility model is clearly and completely described. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the described embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field belong to the scope of protection of the utility model.

[0025] like Figure 1~2 As shown, a detection device for fire-fighting temperature-sensing cables in an embodiment of the utility model, the detection device 100 includes a supporting base 1, a snap-fitting pressure plate 3 and a thermometer 10, the supporting base 1 and the snap-fitting pressure plate 3 are made of heat-insulating materials such as wood or nylon, the high temperature resistance requirement of the heat-insulating material is greater than 150°C, the detection temperature of the temperature-sensing cable is set to a maximum of 100°C, which does not reach the ignition point of the heat-insulating material, so the safety and reliability of the detection device can be guaranteed.

[0026] like Figures 1 to 3 As shown, a cable detection area and a heating mechanism arranged in the detection area are provided at one end of the support base 1, and the heating mechanism includes a first mounting groove 101 opened at one end of the support base 1 and a first PTC heating sheet 4 accommodated in the first mounting groove; a second mounting groove 301 corresponding to the first mounting groove 101 is provided on the bottom surface of the buckling pressure plate 3, and a second PTC heating sheet 5 corresponding to the first PTC heating sheet 4 is accommodated in the second mounting groove 301, and the power of the first PTC heating sheet 4 and the second PTC heating sheet 5 is 5W, and the voltage is 12V; a thermally conductive silicone sheet 7 with a thickness of 2 to 3mm is respectively provided on the corresponding bonding surfaces of the first PTC heating sheet 4 and the second PTC heating sheet 5, and the function of the thermally conductive silicone sheet is to eliminate thermal resistance and quickly conduct the heat of the PTC heating sheet to the measuring resistor and the temperature sensing cable. One side of the snap-fitting pressure plate 3 is hingedly connected to one side of the supporting base 1 through a hinge mechanism 2. The snap-fitting pressure plate 3 can snap-fit ​​and press the temperature sensing cable 6 between the two groups of PTC heating plates. The hinge mechanism 2 can use a self-resetting hinge. The hinge mechanism 2 can drive the snap-fitting pressure plate 3 to automatically press on the supporting base 1. When the snap-fitting pressure plate 3 needs to be opened, an external force needs to be applied to the snap-fitting pressure plate 3 to overcome the elastic force of the hinge mechanism 2 to open the snap-fitting pressure plate 3.

[0027] like Figure 2As shown, a safety link 14 is hinged on one side of the support base 1, and a locking slot 142 is provided at the end away from the safety link 14; a locking rod 302 is provided on the side of the buckling pressure plate 3 corresponding to the safety link 14, and the buckling pressure plate 3 is opened by the hinge mechanism 2 and buckled on the locking rod 302 through the locking slot 142 of the safety link 14. During operation, when it is necessary to detect the temperature-sensing cable, an external force is applied to the buckling pressure plate 3 to overcome the elastic force of the hinge mechanism 2 to open the buckling pressure plate 3, and then the buckling pressure plate 3 is fixed in position by the safety link 14. After the temperature-sensing cable 6 is fixed between the first PTC heating plate 4 and the second PTC heating plate 5, the buckling pressure plate 3 can be automatically buckled on the support base 1 under the action of the hinge mechanism 2 after the safety link 14 is opened, and the temperature-sensing cable 6 is clamped to heat it.

[0028] A limit slot 141 is provided on the central back side of the safety link 14 ; a limit pin 102 is provided on the side wall of the support base 1 , and the safety link 14 is supported on the limit pin 102 through the limit slot 141 to keep the safety link 14 in a stored state.

[0029] like Figure 1 and Figure 4 As shown, the thermometer 10 is arranged at one end of the support base 1. The thermometer 10 includes a power switch 11 and a temperature controller. The temperature controller is electrically connected to a temperature measuring resistor 8 arranged on the heating mechanism through a cable 9. The temperature measuring resistor 8 can detect the temperature at the thermal conductive silicone sheet 7 in real time and provide feedback through the temperature controller. The heating temperature is set on the temperature controller, such as 90°C. After the heating temperature is reached, check whether the alarm signal of the fire alarm host has arrived and detect whether the temperature sensing cable is working normally. A battery pack 12 electrically connected to the thermometer 10 and a power controller 13 connected to the battery pack 12 are arranged on the support base 1. A power indicator light 131 is arranged on the power controller 13. In order to ensure that the battery pack has sufficient power, the power controller 13 can realize low power detection of the battery pack. When the discharge voltage is lower than 10V, the power indicator light 131 prompts charging.

[0030] like Figure 4 As shown, in the control circuit diagram, PTC1 and PTC2 are two PTC heating plates, RTD is a measuring resistor, V1 is a 3*18650 lithium battery pack, K is a power switch, R1, R2, R4 and a stabilizing diode D1 form a power supply voltage detection and comparison circuit, R4 is a pull-up resistor, U is a voltage comparator, and R5 and a light-emitting diode LED form an indication circuit.

[0031] The working principle or working method of the utility model:

[0032] A four-layer cable tray is installed in the cable tunnel of a steel plant. The equipment control cables, power cables and power supply cables are laid in the corresponding cable tray levels respectively. The temperature sensing cable 6 for fire detection is laid on the upper surface of the cables in the topmost cable tray. The temperature sensing cable 6 is laid in a sinusoidal wave shape and fixed to other cables with binding tape.

[0033] According to management regulations, the temperature sensing cable 6 is inspected once a month by physically heating it to the temperature of 90°C for temperature sensing cable detection. Firefighters used this portable detection device 100 to detect the temperature sensing cables 6 at 8 locations in the cable channel. The detection showed that the operating conditions of the temperature sensing cables 6 met the requirements.

[0034] The specific detection implementation process is as follows: Place the detection device 100 in the uppermost cable tray, open the buckle pressure plate 3, and use the safety link 14 to lock the position of the buckle pressure plate 3; Place the temperature-sensing cable on the thermal conductive silicone sheet 7 in the detection area, then loosen the safety link 14, close the buckle pressure plate 3, and under the elastic force of the self-resetting hinge, the temperature-sensing cable 6 is firmly pressed on the support base 1 by the buckle pressure plate 3. Close the power switch 11, set the heating temperature to 90°C on the temperature controller, and after reaching the heating temperature, notify the personnel in the control room through the intercom to check whether the alarm signal of the fire alarm host has arrived. After receiving a reply that the alarm information has been displayed, turn off the power of the detection device 100, remove the temperature-sensing cable 6 from the detection device 100, restore the original installation status, and conduct the next temperature-sensing cable 6 detection.

[0035] The above are preferred implementations of the present utility model. It should be pointed out that, for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present utility model. These improvements and modifications should also be regarded as the protection scope of the present utility model.

Claims

1. A detection device for fire-fighting temperature-sensing cables, It is characterized in that The detection device (100) comprises: A support base (1), wherein a heating mechanism is provided at one end of the support base (1); A buckling pressure plate (3), one side of the buckling pressure plate (3) being hingedly connected to one side of the support base (1) via a hinge mechanism (2), and the buckling pressure plate (3) can buckle and press the temperature sensing cable (6) onto the heating mechanism; A temperature meter (10), the temperature meter (10) being arranged at one end of the support base (1), the temperature meter (10) comprising a power switch (11) and a temperature controller, the temperature controller being electrically connected to a temperature measuring resistor (8) arranged on the heating mechanism via a cable (9).

2. The detection device for fire-fighting temperature-sensing cable according to claim 1, It is characterized in that The heating mechanism comprises a first installation groove (101) opened at one end of the support base (1) and a first PTC heating plate (4) accommodated in the first installation groove; The bottom surface of the buckled pressure plate (3) is provided with a second installation groove (301) corresponding to the first installation groove (101), and the second installation groove (301) accommodates a second PTC heating plate (5) corresponding to the first PTC heating plate (4).

3. The detection device for fire-fighting temperature-sensing cable according to claim 2, It is characterized in that A heat-conducting silicone sheet (7) is provided on the corresponding bonding surfaces of the first PTC heating sheet (4) and the second PTC heating sheet (5).

4. The detection device for fire-fighting temperature-sensing cable according to claim 1, It is characterized in that The support base (1) is provided with a battery pack (12) electrically connected to the temperature meter (10) and a power controller (13) connected to the battery pack (12), and the power controller (13) is provided with a power indicator light (131).

5. The detection device for fire-fighting temperature-sensing cable according to claim 1, It is characterized in that A safety link (14) is hingedly connected to one side of the support base (1), and a locking slot (142) is provided at the distal end of the safety link (14); A locking rod (302) is provided on the side of the buckling pressure plate (3) corresponding to the safety link (14); the buckling pressure plate (3) is opened by a hinge mechanism (2) and buckled onto the locking rod (302) through a locking slot (142) of the safety link (14).

6. The detection device for fire-fighting temperature-sensing cable according to claim 5, It is characterized in that A limit slot (141) is provided on the central back side of the safety connecting rod (14); A limit pin (102) is provided on the side wall of the support base (1), and the safety connecting rod (14) is supported on the limit pin (102) through a limit slot (141) to keep the safety connecting rod (14) in a stored state.

7. The detection device for fire-fighting temperature-sensing cable according to claim 6, It is characterized in that The hinge mechanism (2) is a self-resetting hinge, and the hinge mechanism (2) drives the buckling pressure plate (3) to automatically press onto the support base (1).

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