Temperature sensing starting device for suspension type dry powder fire extinguishing device

Abstract

The utility model relates to a temperature sensing starting device, and aims to solve the technical problems that an existing starting device needs an uninterrupted fire-fighting power supply and a battery, has requirements on the humidity of a use environment, and is complex in structure and high in cost. According to the temperature sensing starting device for the suspension type dry powder fire extinguishing device, a spring is sleeved on a mounting shaft, and two ends of the spring are respectively propped against the lower surface of a clamping seat and the inner bottom surface of a guide cylinder; a limiting clamping groove is formed in the end, located outside the guide cylinder, of the installation shaft. A temperature sensing deformation element matched with the limiting clamping groove is arranged at the bottom end of the guide cylinder. A tapping movable pin is arranged at the upper end of the mounting shaft; a piezoelectric ceramic mounting seat, piezoelectric ceramic and a tapping contact are sequentially arranged at the position, opposite to the tapping movable pin, of the bottom end of the cover plate from top to bottom; and after the temperature-sensing deformation element is heated and deformed, the tapping movable pin impacts the tapping contact, so that the piezoelectric ceramic generates a starting current signal and transmits the starting current signal to the suspension type dry powder fire extinguishing device.

Description

Technical Field

[0001] The utility model relates to a temperature sensing starting device, in particular to a temperature sensing starting device for a suspended dry powder fire extinguishing device. Background Art

[0002] At present, the commonly used starting methods of suspended dry powder fire extinguishing devices are: fire automatic alarm system linkage control starting method, self-powered temperature sensor starting method, thermal initiator starting method and temperature-sensitive magnetic generation starting method; these starting methods have different disadvantages, namely: uninterruptible fire power supply, battery required, humidity requirements for the use environment, and complex starting device structure and high cost.

[0003] Therefore, there is an urgent need to provide a mechanical temperature-sensitive piezoelectric ceramic power generation starting device that does not require a power supply and has a simple structure so as to be suitable for different use environments. Utility Model Content

[0004] The purpose of the utility model is to solve the technical problems that the existing starting device requires an uninterruptible fire power supply, requires batteries, has requirements on the humidity of the use environment, and the starting device has a complex structure and high cost, and to provide a temperature sensing starting device for a suspended dry powder fire extinguishing device.

[0005] In order to solve the above technical problems, the technical solutions provided by the utility model are as follows:

[0006] A temperature sensing starting device for a suspended dry powder fire extinguishing device, which is special in that:

[0007] It comprises a shell, the top end of which is provided with a cover plate, and the bottom end of which is provided with a guide cylinder mounting hole;

[0008] A guide cylinder is fixedly installed in the shell, a fixing frame is fixedly installed on the upper end of the guide cylinder, and the lower end of the guide cylinder passes through the guide cylinder installation hole and extends to the outside of the shell;

[0009] The guide cylinder is provided with a mounting shaft with a clamping seat, the mounting shaft is slidably mounted in the guide cylinder through the clamping seat, and its lower end extends out of the guide cylinder; a spring is sleeved on the mounting shaft, and the two ends of the spring are respectively in contact with the lower surface of the clamping seat and the inner bottom surface of the guide cylinder;

[0010] The end of the installation shaft located outside the guide cylinder is provided with a limit slot, and the bottom end of the guide cylinder is provided with a temperature-sensitive deformation element adapted to the limit slot;

[0011] A knocking pin is provided at the upper end of the installation shaft; a piezoelectric ceramic mounting seat, a piezoelectric ceramic and a knocking contact are provided in sequence from top to bottom at a position opposite to the knocking pin at the bottom end of the cover plate; after the temperature-sensing deformation element is deformed by heat, the knocking pin hits the knocking contact, causing the piezoelectric ceramic to generate a starting current signal and transmit it to the suspended dry powder fire extinguishing device.

[0012] Furthermore, a feedback switch plate is provided on the top of the fixing frame, and a feedback spring is provided on the fixing sleeve on the mounting shaft;

[0013] The feedback spring is in contact with the feedback switch plate to form a feedback loop and generate a feedback current signal and transmit the feedback current signal to the suspended dry powder fire extinguishing device.

[0014] Furthermore, a cable fixing seat is provided on the side of the bottom end of the cover plate, and a transmission cable is provided in the cable fixing seat. The transmission cable is electrically connected to the wiring terminals of the piezoelectric ceramic and the wiring terminals of the feedback switch board.

[0015] Furthermore, the portion of the guide tube that extends out of the shell is fixedly sleeved with a protective cap, and the protective cap is provided with a plurality of evenly distributed temperature sensing holes.

[0016] Furthermore, an annular boss is provided on the inner side wall of the protective cap, and an annular groove matching the annular boss is provided on the outer side wall of the guide cylinder;

[0017] The protective cap and the guide cylinder are fixed together by an annular boss and an annular groove.

[0018] Compared with the prior art, the utility model has the following beneficial effects:

[0019] 1. The temperature-sensing starting device for a suspended dry powder fire extinguishing device provided by the utility model senses temperature and triggers signals through a piezoelectric ceramic wind power assembly composed of a guide cylinder, a piezoelectric ceramic, a feedback spring, a feedback switch plate, a mounting shaft, a spring and a temperature-sensing deformation element; when a fire occurs and the ambient temperature reaches the deformation temperature of the temperature-sensing deformation element, the temperature-sensing deformation element deforms and disengages from the card slot, and the knocking pin on the mounting shaft equipped with the feedback spring hits the knocking contact above the fixed piezoelectric ceramic on the cover plate under the action of the spring, compressing the piezoelectric ceramic to generate an induced current, providing a starting signal for the dry powder fire extinguishing device; in this way, the fire signal triggering and starting are completed without connecting to a fire alarm control system or power supply; since no thermosensitive agent or battery is used, the temperature-sensing starting device of the utility model can be used in harsh environments such as humidity, without the need to replace accessories such as batteries, maintenance-free, and having a long service life.

[0020] 2. The temperature-sensing starting device for the suspended dry powder fire extinguishing device provided by the utility model can use different temperature-sensing deformation elements according to the selected use site, and use materials with different deformation temperatures to match different temperature requirements.

[0021] 3. The temperature-sensing starting device for the suspended dry powder fire extinguishing device provided by the utility model can be processed by machining or injection molding, does not require a power supply, and uses a mechanical temperature-sensing piezoelectric ceramic to generate electricity and output a starting signal for the dry powder fire extinguishing device, thereby avoiding the problem of being unable to start the suspended dry powder fire extinguishing device due to power outages, dead batteries, etc. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the utility model;

[0023] Figure 2 This is a schematic diagram of the structure of the embodiment of the utility model without the housing, cover plate and protective cap;

[0024] Figure 3 It is a structural schematic diagram of a cover plate in an embodiment of the utility model;

[0025] Figure 4 It is a schematic diagram of the structure of the protective cap in the embodiment of the utility model.

[0026] Explanation of the accompanying drawings: 1 is a cover plate, 2 is a shell, 3 is a guide cylinder, 31 is an annular slot, 4 is a fixing frame, 5 is a mounting shaft, 51 is a limit slot, 52 is a tapping pin, 6 is a holder, 7 is a spring, 8 is a temperature-sensing deformation element, 9 is a piezoelectric ceramic mounting seat, 10 is a piezoelectric ceramic, 11 is a tapping contact, 12 is a feedback switch plate, 13 is a feedback spring, 14 is a transmission cable, 15 is a protective cap, 151 is a temperature sensing hole, 152 is a ring-shaped boss, and 16 is a cable fixing seat. DETAILED DESCRIPTION

[0027] The following will be combined with the accompanying drawings to clearly and completely describe the technical solutions in the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] like Figures 1 to 4As shown, a temperature sensing starting device for a suspended dry powder fire extinguishing device comprises a shell 2, a cover plate 1 is provided at the top of the shell 2, and a guide cylinder 3 mounting hole is provided at the bottom; a guide cylinder 3 is fixedly installed in the shell 2, a fixing frame 4 is fixedly installed at the upper end of the guide cylinder 3, and the lower end passes through the guide cylinder 3 mounting hole and extends to the outside of the shell 2; a mounting shaft 5 with a clamping seat 6 is provided in the guide cylinder 3, and the mounting shaft 5 is slidably installed in the guide cylinder 3 through the clamping seat 6, and its lower end extends to the outside of the guide cylinder 3; a spring 7 is sleeved on the mounting shaft 5, and the two ends of the spring 7 are respectively abutted against the lower surface of the clamping seat 6 and the inner bottom surface of the guide cylinder 3;

[0029] A limit slot 51 is provided on the end of the installation shaft 5 located outside the guide cylinder 3, and a temperature-sensing deformation element 8 matched with the limit slot 51 is provided at the bottom end of the guide cylinder 3; a knocking movable pin 52 is provided at the upper end of the installation shaft 5; a piezoelectric ceramic 10 mounting seat 9, a piezoelectric ceramic 10 and a knocking contact 11 are provided in sequence from top to bottom at the position opposite to the knocking movable pin 52 at the bottom end of the cover plate 1; after the temperature-sensing deformation element 8 is deformed by heat, the knocking movable pin 52 hits the knocking contact 11, so that the piezoelectric ceramic 10 generates a starting current signal and transmits it to the suspended dry powder fire extinguishing device.

[0030] A feedback switch plate 12 is provided at the top of the fixing frame 4, and a feedback spring 13 is fixedly sleeved on the mounting shaft 5; the feedback spring 13 contacts the feedback switch plate 12 to form a feedback loop and generate a feedback current signal and transmit the feedback current signal to the suspended dry powder fire extinguishing device.

[0031] A cable fixing seat 16 is provided at the bottom side of the cover plate 1 , and a transmission cable 14 is provided in the cable fixing seat 16 . The transmission cable 14 is electrically connected to the connection terminals of the piezoelectric ceramic 10 and the connection terminals of the feedback switch board 12 .

[0032] The portion of the guide tube 3 extending out of the housing 2 is fixedly sleeved with a protective cap 15 , and the protective cap 15 is provided with a plurality of evenly distributed temperature sensing holes 151 .

[0033] The inner wall of the protective cap 15 is provided with an annular boss 152 , and the outer wall of the guide cylinder 3 is provided with an annular groove 31 matched with the annular boss 152 ; the protective cap 15 and the guide cylinder 3 are fixed together by the annular boss 152 and the annular groove 31 .

[0034] The utility model provides a temperature-sensing starting device for a suspended dry powder fire extinguishing device. When a fire occurs, when the ambient temperature reaches the deformation temperature of the temperature-sensing deformation element 8 (materials with different deformation temperatures can be used to match different temperature requirements), the temperature-sensing deformation element 8 is thermally deformed and disengaged from the mounting shaft 5 slot, and the mounting shaft 5 is pushed by the spring 7 to drive the feedback spring 13 and the tapping movable pin 52 to move upward. The tapping movable pin 52 hits the tapping contact 11 above the fixed piezoelectric ceramic 10 on the cover plate 1, compressing the piezoelectric ceramic 10 to generate an induced current. The induced current is used as a starting signal to output the starting signal through the wiring terminals on the piezoelectric ceramic 10 mounting seat 9 and the connecting transmission cable 14. At the same time, the feedback spring 13 moves upward to the feedback switch board 12 and contacts it, the feedback loop is turned on, and a closed feedback signal is output through the transmission cable 14.

[0035] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any changes or replacements within the technical scope disclosed in the utility model should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A temperature sensing starting device for a suspended dry powder fire extinguishing device, characterized in that: It comprises a shell (2), the top end of which is provided with a cover plate (1), and the bottom end of which is provided with a guide cylinder (3) mounting hole; A guide cylinder (3) is fixedly installed in the housing (2); a fixing frame (4) is fixedly installed on the upper end of the guide cylinder (3), and the lower end thereof passes through a mounting hole of the guide cylinder (3) and extends to the outside of the housing (2); The guide cylinder (3) is provided with a mounting shaft (5) with a clamping seat (6), the mounting shaft (5) is slidably mounted in the guide cylinder (3) through the clamping seat (6), and the lower end of the mounting shaft (5) extends to the outside of the guide cylinder (3); the mounting shaft (5) is sleeved with a spring (7), and the two ends of the spring (7) are respectively in contact with the lower surface of the clamping seat (6) and the inner bottom surface of the guide cylinder (3); The end of the installation shaft (5) located outside the guide cylinder (3) is provided with a limit slot (51), and the bottom end of the guide cylinder (3) is provided with a temperature-sensitive deformation element (8) adapted to the limit slot (51); A knocking movable pin (52) is provided at the upper end of the installation shaft (5); a piezoelectric ceramic (10) mounting seat (9), a piezoelectric ceramic (10) and a knocking contact (11) are provided in sequence from top to bottom at a position opposite to the knocking movable pin (52) at the bottom end of the cover plate (1); after the temperature-sensing deformation element (8) is deformed by heat, the knocking movable pin (52) strikes the knocking contact (11), causing the piezoelectric ceramic (10) to generate a starting current signal and transmit it to the suspended dry powder fire extinguishing device.

2. The temperature sensing starting device for a suspended dry powder fire extinguishing device according to claim 1 is characterized in that: A feedback switch plate (12) is provided on the top of the fixing frame (4), and a feedback spring piece (13) is provided on the fixing sleeve of the mounting shaft (5); The feedback spring (13) contacts the feedback switch plate (12) to form a feedback loop and generate a feedback current signal and transmit the feedback current signal to the suspended dry powder fire extinguishing device.

3. The temperature sensing starting device for a suspended dry powder fire extinguishing device according to claim 2 is characterized in that: A cable fixing seat (16) is provided on the bottom side of the cover plate (1), a transmission cable (14) is provided in the cable fixing seat (16), and the transmission cable (14) is electrically connected to the connection terminals of the piezoelectric ceramic (10) and the connection terminals of the feedback switch board (12).

4. The temperature sensing starting device for a suspended dry powder fire extinguishing device according to claim 1, characterized in that: The portion of the guide tube (3) extending outside the housing (2) is fixedly sleeved with a protective cap (15), and the protective cap (15) is provided with a plurality of evenly distributed temperature sensing holes (151).

5. The temperature sensing starting device for a suspended dry powder fire extinguishing device according to claim 4 is characterized in that: An annular boss (152) is provided on the inner side wall of the protection cap (15), and an annular groove (31) adapted to the annular boss (152) is provided on the outer side wall of the guide cylinder (3); The protective cap (15) and the guide cylinder (3) are fixed together by means of an annular boss (152) and an annular groove (31).

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