Linear full-length temperature measurement fire detector

Abstract

The utility model discloses a linear full-length temperature measurement fire detector. The detector comprises a signal processing module, at least two temperature measurement relay units and at least two temperature measurement cables, the temperature measurement cables and the temperature measurement relay units are alternately arranged, and the temperature measurement cables are electrically connected with the adjacent temperature measurement relay units to form a linear structure; the signal processing module is electrically connected to the head end of the linear structure; the temperature measurement cable is used for collecting first temperature data of a corresponding position of the temperature measurement cable and transmitting the first temperature data to the temperature measurement relay unit; the temperature measurement relay unit is used for collecting second temperature data of the corresponding position of the temperature measurement relay unit and transmitting the first temperature data and the second temperature data to the signal processing module; and the signal processing module is used for determining the highest temperature data on the linear structure according to the first temperature data and the second temperature data, and judging whether fire early warning is carried out or not. According to the technical scheme provided by the embodiment of the utility model, long-distance real-time temperature measurement and fire detection alarm functions can be realized.

Description

Technical Field

[0001] The utility model relates to the technical field of fire detection, in particular to a linear full-length temperature measuring fire detector. Background Art

[0002] In the fields of cable trays, integrated pipeline corridors, petrochemical industry, coal mines, etc., fire detection of industrial equipment is of great significance.

[0003] The prior art proposes to use a thermal cable to detect fires in industrial equipment in industrial sites. However, the use length of the thermal cable is usually about 200 meters, so it is not suitable for long-distance fire detection in industrial sites. Utility Model Content

[0004] The utility model provides a linear full-length temperature measuring fire detector to realize long-distance real-time temperature measurement and fire detection alarm functions.

[0005] According to one aspect of the utility model, a linear full-length temperature measurement fire detector is provided, comprising: a signal processing module, at least two temperature measurement relay units and at least two temperature measurement cables;

[0006] The temperature measuring cables and the temperature measuring relay units are arranged alternately, and the temperature measuring cables are electrically connected to the adjacent temperature measuring relay units to form a linear structure; the signal processing module is electrically connected to an end of the temperature measuring cable at the head end of the linear structure away from the temperature measuring relay unit;

[0007] The temperature measuring cable is used to collect first temperature data at a position corresponding to the temperature measuring cable and transmit it to the temperature measuring relay unit; the temperature measuring relay unit is used to collect second temperature data at a position corresponding to the temperature measuring relay unit, and transmit the first temperature data and the second temperature data to the signal processing module; the signal processing module is used to determine the highest temperature data on the linear structure based on the first temperature data and the second temperature data, and determine whether to issue a fire warning.

[0008] Optionally, the temperature measuring cable comprises an insulating sheath, two metal buses and two thermocouple wires; the insulating sheath is wrapped around the outer layer of the metal bus and the thermocouple wires;

[0009] The thermocouple wire is used to monitor and collect the first temperature data at the corresponding position of the temperature measuring cable;

[0010] The metal bus is used to transmit electric energy to the linear full-length temperature measuring fire detector and realize the data communication connection between the temperature measuring cable and the temperature measuring relay unit.

[0011] Optionally, the outer surface of the thermocouple wire is wrapped with a temperature sensitive layer.

[0012] Optionally, the two thermocouple wires include a nickel-chromium thermocouple wire and a nickel-silicon thermocouple wire.

[0013] Optionally, the temperature measuring cable is a flexible structure.

[0014] Optionally, the temperature measurement relay unit includes a temperature sensor and a signal transmission module;

[0015] The temperature sensor is used to monitor and collect the second temperature data at the corresponding position of the temperature measurement relay unit; the signal transmission module is used to receive the electric energy transmitted by the temperature measurement cable and the first temperature data, and transmit the first temperature data and the second temperature data to the signal processing module.

[0016] Optionally, the temperature measurement relay unit further includes a positioning module;

[0017] The positioning module is used to collect the position information of the temperature measurement relay unit and transmit the position information to the signal processing module.

[0018] Optionally, the signal processing module includes a control unit;

[0019] The control unit is used to receive the first temperature data and the second temperature data, determine the maximum temperature data according to the first temperature data and the second temperature data, and compare the maximum temperature data with a temperature threshold so as to issue a fire warning when the maximum temperature data is greater than the temperature threshold.

[0020] Optionally, the signal processing module is provided with a power interface;

[0021] The power supply interface is used to be electrically connected to an external power supply so that the external power supply provides the electric energy required by the linear full-length temperature measuring fire detector.

[0022] Optionally, the signal processing module further includes a display unit;

[0023] The display unit is used to display the operating status and warning status of the linear full-length temperature measuring fire detector.

[0024] The linear full-length temperature measuring fire detector provided by the embodiment of the utility model includes at least two temperature measuring relay units and at least two temperature measuring cables. Each temperature measuring cable and each temperature measuring relay unit are arranged alternately to form a multi-stage cascade linear structure in which one temperature measuring cable is connected to one temperature measuring relay unit. A signal processing module is electrically connected to the end of the temperature measuring cable located at the head end of the linear structure away from the temperature measuring relay unit. The temperature measuring cable collects the first temperature data of the corresponding position in the length direction and transmits it to the temperature measuring relay unit. The temperature measuring relay unit collects the second temperature data at the corresponding position, and transmits the first temperature data and the second temperature data to the signal processing module. The signal processing module determines the highest temperature data based on the first temperature data and the second temperature data, and can determine whether a fire warning is required. In this way, the highest temperature on the long-distance linear structure can be monitored in real time, thereby realizing long-distance and accurate fire detection.

[0025] It should be understood that the contents described in this section are not intended to identify the key or important features of the embodiments of the present utility model, nor are they intended to limit the scope of the present utility model. Other features of the present utility model will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0027] Figure 1 It is a structural diagram of a linear full-length temperature measuring fire detector provided according to an embodiment of the utility model;

[0028] Figure 2 It is a schematic diagram of the cross-sectional structure of a temperature measuring cable provided according to an embodiment of the utility model. DETAILED DESCRIPTION

[0029] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is only a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

[0030] It should be noted that the terms "first", "second", etc. in the specification and claims of the utility model and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the utility model described here can be implemented in an order other than those illustrated or described here. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0031] The utility model embodiment provides a linear full-length temperature measuring fire detector. Figure 1 The present utility model provides a structural diagram of a linear full-length temperature measuring fire detector. Figure 1 As shown, the linear full-length temperature measuring fire detector includes: a signal processing module 10, at least two temperature measuring relay units 20 and at least two temperature measuring cables 30.

[0032] Each temperature measuring cable 30 is arranged alternately with each temperature measuring relay unit 20, and the temperature measuring cable 30 is electrically connected to the adjacent temperature measuring relay unit 20 to form a linear structure; the signal processing module 10 is electrically connected to the end of the temperature measuring cable 30 located at the head end of the linear structure away from the temperature measuring relay unit 20.

[0033] The temperature measuring cable 30 is used to collect the first temperature data at the corresponding position of the temperature measuring cable 30 and transmit it to the temperature measuring relay unit 20; the temperature measuring relay unit 20 is used to collect the second temperature data at the corresponding position of the temperature measuring relay unit 20, and transmit the first temperature data and the second temperature data to the signal processing module 10; the signal processing module 10 is used to determine the highest temperature data on the linear structure according to the first temperature data and the second temperature data, and determine whether to issue a fire warning.

[0034] For example, due to the limited length of the temperature measuring cable 30, long-distance temperature monitoring cannot be achieved by relying on only one temperature measuring cable 30, and thus production safety in industrial sites cannot be guaranteed. In an embodiment of the utility model, at least two temperature measuring cables 30 are used, and the end of each temperature measuring cable 30 is electrically connected to a temperature measuring relay unit 20, and each temperature measuring cable 30 is electrically connected to the temperature measuring relay unit 20 connected to the end in a cascade manner, that is, each temperature measuring cable 30 and each temperature measuring relay unit 20 are alternately arranged and electrically connected, thereby obtaining a linear structure. By setting the number of temperature measuring cables 30 and temperature measuring relay units 20 connected in the linear structure, long-distance temperature monitoring can be achieved.

[0035] The temperature measuring cable 30 can monitor in real time the maximum temperature within the corresponding position range in the length direction of the temperature measuring cable 30, that is, when the temperature at any position on a continuous temperature measuring cable 30 is higher than the temperature at other positions, the insulation resistance at that position will decrease, thereby appearing a temporary temperature measurement end; if the temperature at another position on the temperature measuring cable 30 is higher than the temperature at that position, the temperature measuring cable 30 will use the position with higher temperature as a new temporary temperature measurement end, thereby tracking the highest temperature point on the temperature measuring cable 30, and collecting temperature data at the highest temperature point, obtaining first temperature data and transmitting it to the temperature measurement relay unit 20.

[0036] The temperature measurement relay unit 20 can monitor the corresponding second temperature data at the temperature measurement relay unit 20 in real time, and transmit the received first temperature data and second temperature data to the signal processing module 10. The signal processing module 10 is arranged at the head end of the first temperature measurement cable 30 in the cascade-connected linear structure. The signal processing module 10 can determine the highest temperature data according to the first temperature data and the second temperature data of each segment in the received linear structure, and determine whether a fire warning is required according to the highest temperature data. The fire detector structure in the related art, that is, to determine whether a fire warning is required by collecting temperature change values, needs to add a compensation structure to the fire detector to ensure accurate warning when the ambient temperature is high. Compared with the related art, the fire detector provided in the embodiment of the utility model performs a fire warning by collecting the highest temperature data on the linear structure, and does not need to set a compensation structure, which is conducive to simplifying the structure.

[0037] The linear full-length temperature measuring fire detector provided by the embodiment of the utility model comprises at least two temperature measuring relay units 20 and at least two temperature measuring cables 30. Each temperature measuring cable 30 is arranged alternately with each temperature measuring relay unit 20 to form a multi-stage cascade linear structure in which one temperature measuring cable 30 is connected to one temperature measuring relay unit 20. A signal processing module 10 is electrically connected to one end of the temperature measuring cable 30 located at the head end of the linear structure away from the temperature measuring relay unit 20. The temperature measuring cable 30 collects the first temperature data of the corresponding position in the length direction and transmits it to the temperature measuring relay unit 20. The temperature measuring relay unit 20 collects the second temperature data at the corresponding position and transmits the first temperature data and the second temperature data to the signal processing module 10. The signal processing module 10 determines the highest temperature data based on the first temperature data and the second temperature data, and can determine whether a fire warning is required. In this way, the highest temperature on the long-distance linear structure can be monitored in real time, thereby realizing long-distance and accurate fire detection.

[0038] Optionally, Figure 2 Schematic diagram of the cross-sectional structure of a temperature measuring cable provided by the embodiment of the utility model. Figure 2As shown, the temperature measuring cable 30 includes an insulating sheath 31 , two metal buses 32 and two thermocouple wires 33 ; the insulating sheath 31 is wrapped around the outer layer of the metal buses 32 and the thermocouple wires 33 .

[0039] The thermocouple wire 33 is used to monitor and collect the first temperature data at the corresponding position of the temperature measuring cable 30; the metal bus 32 is used to transmit electrical energy to the linear full-length temperature measuring fire detector and realize the data communication connection between the temperature measuring cable 30 and the temperature measuring relay unit 20.

[0040] Exemplarily, the outer periphery of the temperature measuring cable 30 is wrapped with an insulating sheath 31 to ensure the safe use of the temperature measuring cable 30. Two metal buses 32 and two thermocouple wires 33 are arranged in the insulating sheath 31. Among them, the distribution mode of the two metal buses 32 and the two thermocouple wires 33 in the insulating sheath 31 can be parallel distribution, or can also be twisted winding distribution, and its distribution mode is not limited to the above two modes; the distribution mode of the two metal buses 32 and the distribution mode of the two thermocouple wires 33 can be the same or different, and there is no limitation here. The metal bus 32 is used to transmit electrical energy to various parts of the fire detector so that the fire detector can operate normally. And the metal bus 32 is also used to establish a communication connection between the temperature measuring cable 30 and the adjacent temperature measuring relay unit 20, so that the temperature measuring cable 30 can transmit the collected first temperature data to the adjacent temperature measuring relay unit 20.

[0041] Exemplarily, the two thermocouple wires 33 include a nickel-chromium thermocouple wire and a nickel-silicon thermocouple wire. The thermocouple wires 33 can be used to track and monitor the highest temperature on the temperature measuring cable 30 in real time. Compared with the related art of collecting temperature change values ​​to determine whether to issue a fire warning, this embodiment is conducive to improving the accuracy of fire detection.

[0042] Optionally, based on the above embodiments, continue to refer to Figure 2 The outer surface of the thermocouple wire 33 is wrapped with a temperature sensitive layer 331 .

[0043] Exemplarily, the temperature sensitive layer 331 can be formed by coating the outer surface of the thermocouple wire 33 with a temperature sensitive material. The temperature sensitive material may include a negative temperature coefficient (NTC) sensitive material, which is not limited here. By coating a layer of NTC sensitive material on the outer surface of the thermocouple wire 33, it is beneficial to improve the thermal conductivity of the temperature measuring cable 30, making the temperature measuring cable 30 more sensitive to temperature, thereby improving the accuracy of monitoring and collecting the first temperature data.

[0044] Optionally, based on the above embodiments, the temperature measuring cable 30 is a flexible structure.

[0045] Exemplarily, the temperature measuring cable 30 is configured as a flexible structure, which can expand the application scenarios of linear full-length temperature measuring fire detectors and realize long-distance fire detection in non-linear scenarios.

[0046] The temperature measuring cable provided in this embodiment is configured as a flexible structure and includes two nickel-chromium thermocouple wires and a nickel-silicon thermocouple wire. The outer surface of the thermocouple wires is coated with a layer of temperature-sensitive material, thereby expanding the application scenarios of the temperature measuring cable, improving the thermal conductivity of the temperature measuring cable, and realizing accurate temperature monitoring.

[0047] Optionally, based on the above embodiments, the temperature measurement relay unit 20 includes a temperature sensor and a signal transmission module.

[0048] The temperature sensor is used to monitor and collect the second temperature data at the corresponding position of the temperature measurement relay unit 20; the signal transmission module is used to receive the electric energy and the first temperature data transmitted by the temperature measurement cable 30, and transmit the first temperature data and the second temperature data to the signal processing module 10.

[0049] Exemplarily, the temperature sensor in the temperature measurement relay unit 20 can monitor and collect the second temperature data at the location in real time, and transmit the second temperature data to the signal transmission module. The signal transmission module can receive the first temperature data and the second temperature data in real time, and transmit the acquired first temperature data and the second temperature data to the signal processing module 10 for data processing. In addition, the signal transmission module maintains its normal operation by receiving the electric energy transmitted by the temperature measurement cable 30.

[0050] Optionally, based on the above embodiments, the temperature measurement relay unit 20 further includes a positioning module.

[0051] The positioning module is used to collect the position information of the temperature measurement relay unit 20 and transmit the position information to the signal processing module 10 .

[0052] Exemplarily, the positioning module provided in the temperature measurement relay unit 20 can collect the position information of the location of the temperature measurement relay unit 20, and can also collect the position information of the corresponding position of the temperature measurement cable 30 electrically connected to the temperature measurement relay unit 20 near the side of the signal processing module 10. In this way, while collecting the first temperature data on the temperature measurement cable 30 and the second temperature data on the temperature measurement relay unit 20, the position corresponding to the generation of the first temperature data and the position corresponding to the generation of the second temperature data can also be obtained, so that the fire can be accurately detected and the position where the fire occurs can be quickly located to ensure the safe use of industrial equipment.

[0053] Optionally, based on the above embodiments, the signal processing module 10 includes a control unit.

[0054] The control unit is used to receive the first temperature data and the second temperature data, determine the highest temperature data according to the first temperature data and the second temperature data, and compare the highest temperature data with the temperature threshold to issue a fire warning when the highest temperature data is greater than the temperature threshold.

[0055] Exemplarily, the control unit in the signal processing module 10 can calculate the highest temperature data on the fire detector of the entire linear structure according to the received first temperature data and second temperature data. The highest temperature data is compared with the temperature threshold. If the highest temperature data is less than or equal to the temperature threshold, there is no fire at the location monitored by the fire detector; if the highest temperature data is greater than the temperature threshold, there is a possibility of fire at the location indicated by the location information corresponding to the highest temperature data. At this time, the signal processing module 10 can issue a fire alarm to notify the staff to conduct on-site inspection.

[0056] It should be noted that when the control unit determines that the highest temperature data is greater than the temperature threshold, the control unit may compare and calculate all the received first temperature data and second temperature data with the temperature threshold to determine all temperature data greater than the temperature threshold, and obtain the position information corresponding to all temperature data greater than the temperature threshold, thereby accurately determining all possible fire locations at the detection position of the linear structure fire detector, which is conducive to improving the accuracy of fire detection.

[0057] Optionally, based on the above embodiments, the signal processing module 10 is provided with a power interface.

[0058] The power interface is used to be electrically connected to an external power source so that the external power source provides the electric energy required by the linear full-length temperature measuring fire detector.

[0059] Exemplarily, the signal processing module 10 is electrically connected to an external power supply through a set power supply interface. The electric energy provided by the external power supply to the linear full-length temperature measuring fire detector is transmitted through the signal processing module 10 to the temperature measuring cable 30 electrically connected to it, and then transmitted to the temperature measuring relay unit 20 through the temperature measuring cable 30, thereby ensuring the normal operation of the linear full-length temperature measuring fire detector.

[0060] Optionally, based on the above embodiments, the signal processing module 10 further includes a display unit.

[0061] The display unit is used to display the operating status and warning status of the linear full-length temperature measuring fire detector.

[0062] Exemplarily, the display unit provided on the signal processing module 10 can be used to display the operating status of the linear full-length temperature measuring fire detector during operation, as well as fault conditions occurring during operation, and when the control unit determines that there is a possibility of fire at the location detected by the linear full-length temperature measuring fire detector, it displays a fire warning status signal and can display the location information of the fire so that staff can quickly conduct on-site inspections.

[0063] The linear full-length temperature measuring fire detector provided in the above-mentioned embodiments can monitor the temperature at the corresponding position in real time, accurately determine whether a fire has occurred and the location of the fire, and display the fire warning signal and location information by setting a temperature sensor, a signal transmission module and a positioning module in the temperature measuring relay unit, and setting a control unit, a display unit and a power supply interface in the signal processing module.

[0064] The above specific implementations do not constitute a limitation on the protection scope of the present utility model. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions can be made according to design requirements and other factors. Any modification, equivalent substitution and improvement made within the spirit and principle of the present utility model shall be included in the protection scope of the present utility model.

Claims

1. A linear full-length temperature measuring fire detector, characterized in that: include: A signal processing module, at least two temperature measurement relay units and at least two temperature measurement cables; The temperature measuring cables and the temperature measuring relay units are arranged alternately, and the temperature measuring cables are electrically connected to the adjacent temperature measuring relay units to form a linear structure; the signal processing module is electrically connected to an end of the temperature measuring cable at the head end of the linear structure away from the temperature measuring relay unit; The temperature measuring cable is used to collect first temperature data at a position corresponding to the temperature measuring cable and transmit it to the temperature measuring relay unit; the temperature measuring relay unit is used to collect second temperature data at a position corresponding to the temperature measuring relay unit and transmit the first temperature data and the second temperature data to the signal processing module; The signal processing module is used to determine the highest temperature data on the linear structure according to the first temperature data and the second temperature data, and to determine whether to issue a fire warning.

2. The linear full-length temperature measuring fire detector according to claim 1 is characterized in that: The temperature measuring cable comprises an insulating sheath, two metal buses and two thermocouple wires; the insulating sheath is wrapped around the outer layer of the metal bus and the thermocouple wires; The thermocouple wire is used to monitor and collect the first temperature data at the corresponding position of the temperature measuring cable; The metal bus is used to transmit electric energy to the linear full-length temperature measuring fire detector and realize the data communication connection between the temperature measuring cable and the temperature measuring relay unit.

3. The linear full-length temperature measuring fire detector according to claim 2 is characterized in that: The outer surface of the thermocouple wire is wrapped with a temperature sensitive layer.

4. The linear full-length temperature measuring fire detector according to claim 2 is characterized in that: The two thermocouple wires include a nickel-chromium thermocouple wire and a nickel-silicon thermocouple wire.

5. The linear full-length temperature measuring fire detector according to claim 2 is characterized in that: The temperature measuring cable is a flexible structure.

6. The linear full-length temperature measuring fire detector according to claim 1, characterized in that: The temperature measurement relay unit includes a temperature sensor and a signal transmission module; The temperature sensor is used to monitor and collect the second temperature data at the corresponding position of the temperature measurement relay unit; the signal transmission module is used to receive the electric energy transmitted by the temperature measurement cable and the first temperature data, and transmit the first temperature data and the second temperature data to the signal processing module.

7. The linear full-length temperature measuring fire detector according to claim 6, characterized in that: The temperature measurement relay unit also includes a positioning module; The positioning module is used to collect the position information of the temperature measurement relay unit and transmit the position information to the signal processing module.

8. The linear full-length temperature measuring fire detector according to claim 1 is characterized in that: The signal processing module includes a control unit; The control unit is used to receive the first temperature data and the second temperature data, determine the maximum temperature data according to the first temperature data and the second temperature data, and compare the maximum temperature data with a temperature threshold so as to issue a fire warning when the maximum temperature data is greater than the temperature threshold.

9. The linear full-length temperature measuring fire detector according to claim 8, characterized in that: The signal processing module is provided with a power supply interface; The power supply interface is used to be electrically connected to an external power supply so that the external power supply provides the electric energy required by the linear full-length temperature measuring fire detector.

10. The linear full-length temperature measuring fire detector according to claim 8, characterized in that: The signal processing module also includes a display unit; The display unit is used to display the operating status and warning status of the linear full-length temperature measuring fire detector.

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