Fire-fighting temperature sensing nozzle sensitivity test device

Abstract

The utility model discloses a sensitivity testing device for a fire-fighting temperature sensing nozzle, and aims to solve the problems of low testing efficiency, insufficient precision and incapability of testing a plurality of samples at the same time in the prior art. The device comprises a heating device, a data acquisition and control system, a sensor assembly and a sample. The heating device is composed of an oven, a baking frame and a sensor mounting plate. The sensor assembly comprises a sensor shell, a sample mounting base, a contact switch connecting rod, a connecting rod reset spring, a contact switch and a switch support. A sample is installed on the sensor assembly, the contact switch is triggered through bursting of the thermosensitive element, and signals are transmitted to the data acquisition and control system to be recorded and analyzed. The device can simultaneously test the sensitivity of a plurality of samples, has the characteristics of high efficiency, accuracy and automation, can effectively improve the quality detection efficiency and reliability of the temperature sensing nozzle, and is suitable for the quality control and research and development test of fire-fighting nozzle production enterprises.

Description

Technical Field

[0001] The utility model relates to a fire test device, in particular to a sensitivity test device for a fire temperature-sensitive sprinkler head. Background Technique

[0002] In a fire protection system, a temperature-sensitive sprinkler head is one of the key components of an automatic sprinkler fire extinguishing system. Its working principle is that a thermal sensitive element senses the ambient temperature. When the temperature reaches the set threshold, the thermal sensitive element ruptures, triggering the sprinkler head to release the fire extinguishing agent, thereby realizing the automatic fire extinguishing function. However, there are differences in the sensitivity, response time and reliability of the thermal sensitive elements of the temperature-sensitive sprinkler heads produced by different manufacturers, which may affect the timeliness and effectiveness of the sprinkler heads in case of a fire. At present, the sensitivity test of the temperature-sensitive sprinkler heads mainly relies on manual operation and simple heating equipment. The test process is cumbersome, inefficient, and it is difficult to accurately record and analyze data. In addition, the existing test devices cannot test multiple samples simultaneously and cannot meet the quality inspection requirements in large-scale production. Therefore, it is of great significance to develop a high-efficiency, accurate and multi-sample testable sensitivity test device for fire temperature-sensitive sprinkler heads. Content of the Utility Model

[0003] The purpose of the utility model is to provide a sensitivity test device for a fire temperature-sensitive sprinkler head.

[0004] To achieve the above purpose, the utility model is implemented according to the following technical scheme:

[0005] The utility model includes a heating device, a data acquisition and control system, a sensor assembly and a sample. There are multiple sensor assemblies, and a sample is detachably connected to each sensor assembly. The multiple sensor assemblies are all placed in the heating device. The control end and the data acquisition end of the heating device are connected to the data acquisition and control system. The signal output ends of the multiple sensor assemblies are all connected to the data acquisition and control system.

[0006] The heating device includes an oven, a baking rack and a sensor mounting plate. The baking rack can be placed in the oven. The control signal end of the oven is connected to the data acquisition and control system. Multiple sensor assemblies are detachably fixed on the sensor mounting plate, and the sensor mounting plate is placed on the baking rack.

[0007] The sensor assembly includes a sensor housing, a sample mounting base, a contact switch connecting rod, a connecting rod return spring, a contact switch, and a switch bracket. The sample includes a sample body, a thermal element, and a sample valve core. The sensor housing is sleeved around the periphery of the sample mounting base. The contact switch connecting rod passes through the lower end of the sensor housing and is movable. The lower end of the sensor housing is fixedly connected to the contact switch through the switch bracket. The contact of the contact switch contacts the lower end of the contact switch connecting rod. The upper end of the sample mounting base is detachably connected to the lower end of the sample body. The thermal element is arranged in the middle of the sample body. The sample valve core is arranged at the position of the middle water outlet of the sample body. The lower end of the sample valve core contacts the upper end of the contact switch connecting rod. The connecting rod return spring is sleeved outside the contact switch connecting rod. The two ends of the connecting rod return spring are respectively located between the upper end of the contact switch connecting rod and the bottom inside the sensor housing. The signal transmission end of the contact switch is connected to the data acquisition and control system through a wire.

[0008] The beneficial effects of the present utility model are as follows:

[0009] The present utility model is a sensitivity test device for fire temperature-sensitive sprinklers. Compared with the prior art, the present utility model has the following remarkable technical effects:

[0010] High efficiency: The device can simultaneously perform sensitivity tests on multiple temperature-sensitive sprinkler samples, greatly improving the test efficiency and being suitable for quality inspection in large-scale production.

[0011] Accuracy: Through the data acquisition and control system, the bursting temperature and response time of each sample can be accurately recorded, providing reliable data for product quality analysis.

[0012] Automation: The heating device and the data acquisition system are linked to achieve automatic temperature rise, automatic recording, and automatic analysis, reducing manual intervention and improving the accuracy and repeatability of the test.

[0013] Safety: The entire test process is carried out in a closed oven, avoiding potential hazards to operators in a high-temperature environment and improving the safety of the test process. Description of the Drawings

[0014] Figure 1 is the structural schematic diagram of the present utility model;

[0015] Figure 2 is Figure 1 the partial enlarged view of part A in

[0016] Figure 3 is the sectional structural schematic diagram of the sensor assembly of the present utility model;

[0017] Figure 4It is a schematic diagram of the external structure of the sensor assembly of the present utility model.

[0018] In the figure: oven 1, data acquisition and control system 2, baking rack 3, sensor mounting plate 4, sensor housing 5, sample mounting seat 6, contact switch connecting rod 7, connecting rod return spring 8, contact switch 9, switch bracket 10, sample body 11, thermal element 12, sample valve core 13. Specific embodiments

[0019] The present utility model will be further described below in conjunction with the accompanying drawings and specific embodiments. The schematic embodiments and descriptions of the present utility model are used to explain the present utility model, but not to limit the present utility model.

[0020] As Figures 1-4 shown: The present utility model includes a heating device, a data acquisition and control system 2, a sensor assembly and a sample. There are multiple sensor assemblies, and each sensor assembly is detachably connected with a sample. The multiple sensor assemblies are all placed in the heating device. The control end and data acquisition end of the heating device are connected to the data acquisition and control system 2, and the signal output ends of the multiple sensor assemblies are all connected to the data acquisition and control system 2.

[0021] The heating device includes an oven 1, a baking rack 3, and a sensor mounting plate 4. The baking rack 3 can be placed in the oven 1. The control signal end of the oven 1 is connected to the data acquisition and control system 2. Multiple sensor assemblies are detachably fixed on the sensor mounting plate 4, and the sensor mounting plate 4 is placed on the baking rack 3.

[0022] The sensor assembly includes a sensor housing 5, a sample mounting base 6, a contact switch connecting rod 7, a connecting rod return spring 8, a contact switch 9, and a switch bracket 10. The sample includes a sample body 11, a thermal element 12, and a sample valve core 13. The sensor housing 5 is sleeved around the periphery of the sample mounting base 6. The contact switch connecting rod 7 passes through the lower end of the sensor housing 5 and is movable. The lower end of the sensor housing 5 is fixedly connected to the contact switch 9 through the switch bracket 10. The contact of the contact switch 9 contacts the lower end of the contact switch connecting rod 7. The upper end of the sample mounting base 6 is detachably connected to the lower end of the sample body 11. The thermal element 12 is arranged in the middle of the sample body 11. The sample valve core 13 is arranged at the middle water outlet position of the sample body 11. The lower end of the sample valve core 13 contacts the upper end of the contact switch connecting rod 7. The connecting rod return spring 8 is sleeved outside the contact switch connecting rod 7. The two ends of the connecting rod return spring 8 are respectively located between the upper end of the contact switch connecting rod 7 and the bottom inside the sensor housing 5. The signal transmission end of the contact switch 9 is connected to the data acquisition and control system 2 through an electric wire.

[0023] The working principle of the present utility model is as follows:

[0024] The sample is a common fire sprinkler head, and the thermal element 12 therein is a key component. When the thermal element 12 senses the temperature and bursts, the sample valve core 13 loses support, thereby opening the water spray pipe connected to the sample body 11 to achieve the purpose of automatic fire protection. However, there may be errors in the production of the thermal element 12, or the sensitivity of the samples produced by different manufacturers may be different. To avoid the sprinkler head being unable to work effectively at critical times, it is necessary to test the samples of different products. The lower end of the sample body 11 is fixedly connected to the upper end of the sample mounting base 6 by a thread. At this time, the lower end of the sample valve core 13 contacts the upper end of the contact switch connecting rod 7, and at the same time, the contact of the contact switch 9 will be pressed down, connecting the signal wire connected to the contact switch 9, and the signal is transmitted to the data acquisition and control system 2 for monitoring. When the temperature in the oven 1 reaches a certain value, the thermal element 12 will burst, and the contact switch connecting rod 7 will push up the sample valve core 13 under the action of the connecting rod return spring 8. At this time, the contact of the contact switch 9 is released, and the data acquisition and control system 2 monitors the signal of the contact switch 9 and the corresponding temperature. When detecting multiple samples, the temperatures at which multiple samples burst at different temperatures can be recorded simultaneously, so as to verify whether the samples meet the test requirements.

[0025] The above has shown and described the basic principles, main features and advantages of the present utility model. Those skilled in the art should understand that the present utility model is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and all these changes and improvements fall within the scope of the present utility model claimed. The scope of protection claimed by the present utility model is defined by the appended claims and their equivalents.

Claims

1. A fire-fighting temperature-sensing sprinkler head sensitivity test device, characterized in that: The invention comprises a heating device, a data acquisition and control system (2), a sensor assembly and a sample. There are a plurality of sensor assemblies, each of which can be detachably connected to a sample. The plurality of sensor assemblies are placed in the heating device. The control end and the data acquisition end of the heating device are connected to the data acquisition and control system (2), and the signal output ends of the plurality of sensor assemblies are connected to the data acquisition and control system (2).

2. The fire-fighting temperature-sensing sprinkler head sensitivity test device according to claim 1 is characterized in that: The heating device comprises an oven (1), a baking rack (3), and a sensor mounting plate (4); the baking rack (3) can be placed in the oven (1); a control signal end of the oven (1) is connected to the data acquisition and control system (2); a plurality of sensor components are detachably fixed on the sensor mounting plate (4); and the sensor mounting plate (4) is placed on the baking rack (3).

3. The fire-fighting temperature-sensing sprinkler head sensitivity test device according to claim 2 is characterized in that: The sensor assembly comprises a sensor housing (5), a sample mounting seat (6), a contact switch connecting rod (7), a connecting rod return spring (8), a contact switch (9), and a switch bracket (10); the sample comprises a sample body (11), a thermal element (12), and a sample valve core (13); the sensor housing (5) is sleeved on the periphery of the sample mounting seat (6); the contact switch connecting rod (7) passes through the lower end of the sensor housing (5) and is movable; the lower end of the sensor housing (5) is fixedly connected to the contact switch (9) through the switch bracket (10); the contact of the contact switch (9) contacts the lower end of the contact switch connecting rod (7); and the sample The upper end of the mounting seat (6) is detachably connected to the lower end of the sample body (11); the thermosensitive element (12) is arranged in the middle of the sample body (11); the sample valve core (13) is arranged at the middle water outlet position of the sample body (11); the lower end of the sample valve core (13) contacts the upper end of the contact switch connecting rod (7); the connecting rod return spring (8) is sleeved outside the contact switch connecting rod (7); the two ends of the connecting rod return spring (8) are respectively located between the upper end of the contact switch connecting rod (7) and the bottom of the sensor housing (5); the signal transmission end of the contact switch (9) is connected to the data acquisition and control system (2) through an electric wire.

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