Self-detecting fire sprinkler

Abstract

The utility model discloses a kind of self-detection fire sprinkler, including mounting seat, base, thermosensitive glass column, splash plate, the water supply passage is opened in the mounting seat, the sealing element is arranged in this water supply passage, the lower end of the sealing element is inlayed with photosensitive element, the base is connected with mounting seat by connecting arm, the upper portion of base is provided with metal installation pedestal, light emitting diode is inlayed in the upper end of this metal installation pedestal, the upper end of thermosensitive glass column is in close contact with photosensitive element, the lower end of thermosensitive glass column is in close contact with light emitting diode, the splash plate is set to the bottom of base, control circuit board is arranged in the lower position of splash plate, the control circuit board is connected with photosensitive element, light emitting diode. The utility model is detected by light performance to thermosensitive glass column, effectively discovers the crack flaw of thermosensitive glass column in advance, to reduce the accidental self-spraying water risk of fire sprinkler, reduce the property loss caused by accidental water spraying of fire sprinkler.

Description

Technical Field

[0001] This utility model relates to the field of fire protection equipment technology, and in particular to a self-detecting fire sprinkler head. Background Technology

[0002] Fire sprinklers, also known as fire sprinkler heads, are used in fire sprinkler systems and are important fire extinguishing devices in building fire protection systems. When a fire occurs, water is sprayed out through the fire sprinkler head and dispersed into rain-like droplets through the splash plate, and then used to extinguish the fire.

[0003] Traditional fire sprinklers rely on the preheating and cracking of a heat-sensitive glass column to automatically spray water for fire suppression. However, in actual use, due to negligence during production or installation, the heat-sensitive glass column may have defects such as cracks, leading to a certain probability of spontaneous explosion and water spraying after being put into use. Precision companies in semiconductors, optoelectronics, and other industries are particularly concerned about this spontaneous explosion phenomenon, as it can cause significant water damage to equipment and property below.

[0004] The existing solutions have limitations: (1) Patent CN107252548A uses the resistance detection method to detect cracks by resistance change, which requires contact electrodes and changes the reliability of the thermosensitive glass column structure; (2) Patent CN212187346U uses the visual detection method, which requires external equipment, has a complex structure that cannot be integrated into the nozzle, and cannot be monitored in real time; (3) No nozzles without built-in power supply are difficult to support active monitoring. Summary of the Invention

[0005] To address the shortcomings of existing technologies, the purpose of this invention is to provide a self-detecting fire sprinkler head. By self-detecting the light-guiding performance of the thermal glass column, cracks and defects in the thermal glass column can be effectively detected in advance, thereby reducing the risk of accidental spontaneous water spraying by the fire sprinkler head and thus reducing property damage caused by accidental water spraying.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A self-detecting fire sprinkler head includes a mounting base, a base, a thermal glass column, and a deflector plate. The mounting base has a water supply channel with a sealing element inside. A photosensitive element is embedded in the lower end of the sealing element. The base is connected to the mounting base via a connecting arm. A metal mounting platform is provided above the base, with a light-emitting diode embedded in the upper end of the platform. The upper end of the thermal glass column is in close contact with the photosensitive element, and the lower end is in close contact with the light-emitting diode. The deflector plate is located at the bottom of the base, and a control circuit board is located below the deflector plate. The input end of the control circuit board is connected to the photosensitive element, and the output end is connected to the light-emitting diode.

[0007] As a preferred embodiment, the cross-section of the water supply channel is stepped, and a sealing ring is provided between the sealing element and the water supply channel.

[0008] As a preferred embodiment, the surface of the thermosensitive glass column is provided with a thin, transparent coating or film layer with a low refractive index.

[0009] As a preferred embodiment, the upper end of the mounting base is also provided with a connecting joint, and the outer periphery of the connecting joint is provided with connecting threads.

[0010] As a preferred embodiment, the base is provided with a mounting threaded hole, a mounting bolt is provided in the mounting threaded hole, and the metal mounting base is provided on top of the mounting bolt.

[0011] As a preferred embodiment, the surfaces of the light-emitting diode and the photosensitive element are concave arc-shaped. The light-emitting diode is provided with a first groove, and the photosensitive element is provided with a second groove. The first groove is attached to the upper end of the thermistor glass pillar, and the second groove is attached to the lower end of the thermistor glass pillar.

[0012] As a preferred embodiment, there are two connecting arms, which are symmetrically arranged with the axis of the water supply channel as the axis of symmetry, and the thermosensitive glass column is disposed between the two connecting arms.

[0013] As a preferred embodiment, the splash plate has several radially and evenly distributed water channels.

[0014] As a preferred embodiment, the control circuit board integrates a low-power control circuit, which includes a low-power controller and a wireless transceiver connected to the low-power controller. The low-power controller is connected to a light-emitting diode and a photosensitive element.

[0015] As a preferred embodiment, the low-power control circuit also includes a charging capacitor for supplying power to the control circuit board, the charging capacitor being connected to a solar panel.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows: This utility model can effectively detect cracks and defects in the thermal glass column in advance by performing self-detection of the light guiding performance of the thermal glass column, thereby reducing the risk of accidental self-spraying of water from the fire sprinkler head and thus reducing property damage caused by accidental water spraying from the fire sprinkler head. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0018] Figure 2 This is a cross-sectional view of the present invention;

[0019] Figure 3This is an enlarged view of the connection of the thermosensitive glass column in this utility model;

[0020] Figure 4 This is a schematic diagram of the low-power control circuit of this utility model;

[0021] The attached diagram lists the following components: 1. Mounting base; 2. Base; 3. Thermistor glass column; 4. Splash plate; 5. Water supply channel; 6. Seal; 7. Photosensitive element; 8. Connecting arm; 9. Metal mounting base; 10. Light-emitting diode; 11. Control circuit board; 12. Sealing ring; 13. Connecting connector; 14. Connecting thread; 15. Mounting threaded hole; 16. Mounting bolt; 17. First groove; 18. Second groove; 19. Water channel; 20. Low-power controller; 21. Wireless transceiver; 22. Comparator; 23. Charging capacitor; 24. Photovoltaic panel; 25. Power manager; 26. LDO regulator. Detailed Implementation

[0022] The present invention will be further described below with reference to specific embodiments. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and should not be used to limit the protection scope of the present invention.

[0023] Example:

[0024] like Figures 1-4 As shown, a self-detecting fire sprinkler head includes a mounting base 1, a base 2, a thermal glass column 3, and a deflector plate 4. The mounting base 1 has a water supply channel 5 with a sealing element 6 inside. A photosensitive element 7 is embedded in the lower end of the sealing element 6. The base 2 is connected to the mounting base 1 via a connecting arm 8. A metal mounting platform 9 is positioned above the base 2, with a light-emitting diode 10 embedded in its upper end. The upper end of the thermal glass column 3 is in close contact with the photosensitive element 7, and the lower end of the thermal glass column 3 is in close contact with the light-emitting diode 10. The deflector plate 4 is located at the bottom of the base 2. A control circuit board 11 is positioned below the deflector plate 4. The input end of the control circuit board 11 is connected to the photosensitive element 7, and the output end of the control circuit board 11 is connected to the light-emitting diode 10.

[0025] Preferably, the cross-section of the water supply channel 5 is stepped, and a sealing ring 12 is provided between the sealing member 6 and the water supply channel 5.

[0026] Specifically, the sealing element 6 is installed inside the water supply channel 5, and the sealing ring 12 between the sealing element 6 and the water supply channel 5 is made of rubber. The photosensitive element 7 is detachably embedded in the lower center of the sealing element 6, and the water supply channel 5 is sealed by the contact of the thermosensitive glass column 3.

[0027] Preferably, the surface of the thermosensitive glass column 3 is provided with a thin transparent coating or film layer with low refractive index.

[0028] Specifically, the material of the thin transparent coating or film layer is magnesium fluoride or silicon dioxide in actual applications, which helps to reduce the transmission loss of optical signals.

[0029] Preferably, the upper end of the mounting base 1 is also provided with a connecting joint 13, and the outer periphery of the connecting joint 13 is provided with connecting threads 14.

[0030] Specifically, in actual application, the connecting joint 13 is integrated with the mounting base 1 and used to connect to the fire water pipe.

[0031] Preferably, the base 2 has a mounting threaded hole 15, a mounting bolt 16 is provided in the mounting threaded hole 15, and the metal mounting base 9 is provided on top of the mounting bolt 16.

[0032] Specifically, the light-emitting diode 10 is a low-power light-emitting diode, which is detachably embedded in the metal mounting base 9.

[0033] Preferably, the surfaces of the light-emitting diode 10 and the photosensitive element 7 are concave arc-shaped. The light-emitting diode 10 is provided with a first groove 17, and the photosensitive element 7 is provided with a second groove 18. The first groove 17 is attached to the upper end of the thermistor glass pillar 3, and the second groove 18 is attached to the lower end of the thermistor glass pillar 3.

[0034] Specifically, the first groove 17 and the second groove 18 limit the position of the thermal glass column 3, thereby preventing the thermal glass column 3 from moving or shaking after installation, and helping to reduce the divergence loss of optical signal.

[0035] Preferably, there are two connecting arms 8, which are symmetrically arranged about the axis of the water supply channel 5, and the thermosensitive glass column 3 is disposed between the two connecting arms 8.

[0036] Specifically, the upper ends of the two connecting arms 8 are connected to the mounting base 1 as one unit, and the lower ends of the two connecting arms 8 are close to each other and connected to the opposite sides of the base 2. The two connecting arms 8 and the base 2 form a roughly "U" shaped structure.

[0037] Preferably, the splash plate 4 has a plurality of radially and evenly distributed water channels 19.

[0038] Specifically, the splash plate 4 is a circular planar plate, which can not only cut the concentrated water flow into an umbrella-shaped water curtain and control the water flow distribution, but also effectively prevent the control circuit board 11 from being directly impacted by the water flow.

[0039] Preferably, the control circuit board 11 integrates a low-power control circuit, which includes a low-power controller 20 and a wireless transceiver 21 connected to the low-power controller 20. The low-power controller 20 is connected to the light-emitting diode 10 and the photosensitive element 7.

[0040] Specifically, a comparator 22 is provided between the photosensitive element 7 and the low-power controller 20. The comparator 22 can be an LM393. The photosensitive element 7 can be a photodiode such as BPW34, the light-emitting diode 10 can be an infrared LED, the wireless transceiver 21 is an NRF24L01 chip, and the low-power controller 20 can be an STM32L051 chip.

[0041] Specifically, after receiving the wireless signal from the staff, the low-power controller 20 drives the low-power light-emitting diode 10 to emit a light signal at a preset frequency. The light signal is transmitted to the photosensitive element 7 through the thermal glass column 3. When the light intensity signal detected by the photosensitive element 7 is lower than a certain percentage of the factory signal strength, the low-power controller 20 triggers the wireless transceiver 21 to send the fire sprinkler head number information to the staff's client display screen to remind them to check or repair it.

[0042] More preferably, the low-power control circuit further includes a charging capacitor 23 for supplying power to the control circuit board 11, the charging capacitor 23 being connected to the solar panel 24.

[0043] Specifically, the solar panel 24 is connected to the control circuit board 11 by wires and supplies power to the control circuit board 11. The solar panel 24 can be an amorphous silicon thin-film battery, while the charging capacitor 23 is used to store electrical energy and supply power to the system when there is no light. In actual use, a power manager 25 is connected between the solar panel 24 and the charging capacitor 23 in the specific circuit. The power manager 25 can be a BQ25504 chip, and the charging capacitor 23 can supply power to the control circuit board 11 by outputting a power supply voltage through an LDO regulator 26.

[0044] This invention effectively detects cracks and defects in the thermal glass column 3 in advance by testing its light-guiding performance, thereby reducing the risk of accidental self-spraying of fire sprinklers and thus reducing property damage caused by accidental fire sprinkler spraying.

[0045] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A self-detecting fire sprinkler head, characterized in that: The device includes a mounting base, a base, a thermal glass column, and a splash plate. The mounting base has a water supply channel with a sealing element inside. A photosensitive element is embedded in the lower end of the sealing element. The base is connected to the mounting base via a connecting arm. A metal mounting platform is positioned above the base, with a light-emitting diode embedded in its upper end. The upper end of the thermal glass column is in close contact with the photosensitive element, and the lower end is in close contact with the light-emitting diode. The splash plate is located at the bottom of the base, and a control circuit board is positioned below the splash plate. The input terminal of the control circuit board is connected to the photosensitive element, and the output terminal is connected to the light-emitting diode.

2. The self-detecting fire sprinkler head according to claim 1, characterized in that: The cross-section of the water supply channel is stepped, and a sealing ring is provided between the sealing element and the water supply channel.

3. A self-detecting fire sprinkler head according to claim 1, characterized in that: The surface of the thermosensitive glass column is provided with a thin, transparent coating or film layer with a low refractive index.

4. A self-detecting fire sprinkler head according to claim 1, characterized in that: The upper end of the mounting base is also provided with a connecting joint, and the outer periphery of the connecting joint is provided with connecting threads.

5. A self-detecting fire sprinkler head according to claim 1, characterized in that: The base has a threaded hole for mounting, and a mounting bolt is installed in the threaded hole. The metal mounting base is located on top of the mounting bolt.

6. A self-detecting fire sprinkler head according to claim 1, characterized in that: The surfaces of the light-emitting diode and the photosensitive element are concave arc-shaped. The light-emitting diode is provided with a first groove, and the photosensitive element is provided with a second groove. The first groove is attached to the upper end of the thermistor glass pillar, and the second groove is attached to the lower end of the thermistor glass pillar.

7. A self-detecting fire sprinkler head according to claim 1, characterized in that: There are two connecting arms, which are symmetrically arranged with the axis of the water supply channel as the axis of symmetry, and the thermosensitive glass column is disposed between the two connecting arms.

8. A self-detecting fire sprinkler head according to claim 1, characterized in that: The splash plate has several radially and evenly distributed water channels.

9. A self-detecting fire sprinkler head according to claim 1, characterized in that: The control circuit board integrates a low-power control circuit, which includes a low-power controller and a wireless transceiver connected to the low-power controller. The low-power controller is connected to a light-emitting diode and a photosensitive element.

10. A self-detecting fire sprinkler head according to claim 9, characterized in that: The low-power control circuit also includes a charging capacitor for supplying power to the control circuit board, which is connected to a solar panel.

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