Fire extinguishing foam conductivity detection tool

Abstract

The utility model belongs to the technical field of live working appliance performance detection, and particularly relates to a fire extinguishing foam conductivity detection tool which is characterized by comprising an insulating support, a live metal hanging plate frame, a compressed nitrogen foam generating device, a foam releasing device and a high-voltage transformer, and the live metal hanging plate frame comprises a rectangular frame, a metal plate, a base and an insulator; the insulating support comprises a T-shaped insulating seat, a lifting frame and a pressing plate, and a bayonet matched with the foam releasing device is arranged between the lifting frame and the pressing plate; the compressed nitrogen foam generating device is connected with the foam releasing device through a hose, and the bottom of the compressed nitrogen foam generating device is insulated; a high-voltage electrode of the high-voltage transformer is respectively connected with the metal plate, the compressed nitrogen foam generating device and the foam releasing device, and the high-voltage transformer is a 100-kilovolt transformer. The beneficial effects of the utility model are that the distance between the insulation support and the electrified metal plate rack and the detection condition are unified, and the data have repeatability and comparability; the method is suitable for batch detection.

Description

TECHNICAL FIELD

[0001] The utility model belongs to live working appliance performance detection technical field, especially related to a fire -extinguishing foam conductivity detection frock. BACKGROUND

[0002] Fire -extinguishing foam types mainly include chemical foam, air foam, fluorine protein foam, water -formed film foam and anti -solubility foam etc. These foam extinguishing agents are different in composition, use and characteristics. Chemical foam: by alkaline solution and acid solution mixed reaction generates, is mainly used for extinguishing B class fire, namely liquid fire. Air foam: by air foam liquid and water are mixed in proportion to generate, is suitable for extinguishing flammable liquid fire. Fluorine protein foam: contains fluorocarbon surfactant, is suitable for extinguishing petroleum product fire. Water -formed film foam: can form a layer of water -proof film on the liquid surface, is suitable for extinguishing water -soluble liquid fire. Anti -solubility foam: contains the component that is insoluble in water, is suitable for extinguishing alcohol, ketone etc. water -soluble liquid fire. These foam extinguishing agents realize extinguishing mainly through the oxygen isolation and cooling effect in extinguishing principle. They can adhere to the combustible material, make the combustible material and air isolated, thereby achieve the purpose of extinguishing.

[0003] Due to the particularity of power line, when extinguishing the power facilities with foam, the foam is required to have insulation performance to avoid the secondary injury to the fire fighters due to conduction. According to standard GB 4351.1-2005 'hand -held fire extinguisher part 1: performance and structure requirement', GA 86-2009'simple fire extinguisher', extinguishing E class fire, the electrical insulation performance must be tested, that is, when the fire extinguisher sprays to the electrified metal plate, the current between the fire extinguisher pressure handle or nozzle and the ground and the ground and the fire extinguisher during the whole process should not be greater than 0.5mA. At present, there is no perfect detection frock for batch detection. UTILITY MODEL CONTENT

[0004] The utility model aims at providing a fire -extinguishing foam conductivity detection frock, overcomes the insufficient of prior art, adopts electrified metal hanging plate frame and insulation support to form standard insulation detection environment, the distance between insulation support and electrified metal plate frame and detection condition are unified, can avoid the negative influence of detection condition change on the accuracy of foam insulation parameter, makes data have repeatability and comparability.

[0005] In order to realize the above-mentioned purpose, the utility model realizes through the following technical scheme:

[0006] A fire extinguishing foam conductivity testing fixture includes an insulating support, a live metal mounting bracket, a compressed nitrogen foam generator, a foam release device, and a high-voltage transformer. The live metal mounting bracket includes a rectangular frame, a metal plate, a base, and insulators. The rectangular frame is vertically mounted on the base, and the four corners of the metal plate are connected to the four corners of the rectangular frame via four insulators. The insulating support includes a T-shaped insulating seat, a lifting frame, and a pressure plate. A locking mechanism matching the foam release device is provided between the lifting frame and the pressure plate. The lifting frame is connected to the T-shaped insulating seat via threads, and the pressure plate is connected to the top of the lifting frame via screws. The compressed nitrogen foam generator is connected to the foam release device via a flexible hose, and an insulating tray is provided at the bottom of the compressed nitrogen foam generator. The high-voltage electrodes output from the high-voltage transformer are connected to the metal plate, the compressed nitrogen foam generator, and the foam release device via cables. The high-voltage transformer is a 100 kV transformer.

[0007] Furthermore, the insulator is a rod-shaped suspension composite insulator.

[0008] Furthermore, the metal plate is square or rectangular with a side length of not less than 1000mm, and its center is at the same height as the nozzle of the foam release device. The foam release device is 4 meters away from the metal plate.

[0009] Furthermore, each end of the insulator is provided with a connecting plate, which is connected to the insulator via a threaded connecting sleeve.

[0010] Furthermore, corner plates are provided at the four corners of the rectangular frame, and the corner plates are connected to the rectangular frame by continuous welds.

[0011] Furthermore, the bottom of the T-shaped insulating seat is provided with an insulating pad; the insulating tray is a nylon or polyethylene injection molded part.

[0012] Furthermore, the base is provided with a receiving groove, which is located directly below the metal plate.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1) A standard insulation testing environment is formed by using a live metal plate rack and an insulating support. The distance between the insulating support and the live metal plate rack and the testing conditions are uniform, which may avoid the negative impact on the accuracy of foam insulation parameters due to changes in testing conditions, and make the data repeatable and comparable.

[0015] 2) The tooling is easy to assemble and has a perfect structure, making it suitable for batch testing of the electrical insulation performance of fire extinguishing foam. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the usage state of an embodiment of this utility model;

[0017] Figure 2 is a schematic diagram of the charged metal hanging plate frame structure in the embodiment of the utility model;

[0018] Figure 3 is Figure 2 a plan view;

[0019] Figure 4 is a schematic diagram of the insulating support structure in the embodiment of the utility model.

[0020] In the drawing: 1-insulating support, 2-charged metal hanging plate frame, 3-high voltage transformer, 4-rectangular frame, 5-metal plate, 6-base, 7-insulator, 8-T-shaped insulating base, 9-lifting frame, 10-pressing plate, 11-foam releasing device, 12-connection plate, 13-threaded connection sleeve, 14-angle plate, 15-inclined support rod, 16-accepting groove, 17-compressed nitrogen foam generating device, 18-hose, 19-insulating tray, 20-cable. DETAILED DESCRIPTION

[0021] The technical solutions of the utility model will be described clearly and completely in combination with specific embodiments. Obviously, the described embodiments are some of the embodiments of the utility model, but not all the embodiments.

[0022] In order to more clearly illustrate the technical solutions in the specific embodiments or prior art, the specific embodiments needed in the description of the specific embodiments or prior art will be briefly introduced. Obviously, the specific embodiments described below are some of the embodiments of the utility model, and other specific embodiments can be obtained by those skilled in the art without creative labor on the basis of the specific embodiments.

[0023] The components of the embodiments of the utility model described and shown in the specific embodiments can be arranged and designed in countless different configurations. Therefore, the following detailed description of the embodiments of the utility model provided in the specific embodiments is not intended to limit the scope of the claimed utility model, but only represents selected embodiments of the utility model.

[0024] See Figures 1-4It is the utility model fire -extinguishing foam conductive detection frock embodiment structure schematic drawing, including insulating support 1, electrified metal hanging plate frame 2, compressed nitrogen foam generating device 17, foam release device 11 and high voltage transformer 3, electrified metal hanging plate frame 2 includes rectangular frame 4, metal plate 5, base 6 and insulator 7, rectangular frame 4 is vertically arranged on base 6, the four corners of metal plate 5 are connected with the four corners of rectangular frame 4 through four insulators 7, and metal plate 5 is square, and the side length is 1000mm. The both ends of insulator 7 are respectively provided with connecting plate 12, and connecting plate 12 is connected with insulator 7 through threaded connection sleeve 13. The four corners of rectangular frame 4 are respectively provided with angle plate 14, and angle plate 14 is connected with rectangular frame 4 using continuous weld. Base 6 is provided with receiving groove 16, and receiving groove 16 is arranged directly below metal plate 5, and the size of receiving groove 16 is 1500mm in length, 1500mm in width and 150mm in height. In order to increase the strength, inclined bracing 15 is arranged between the front and back of rectangular frame 4 and base 6.

[0025] Insulating support 1 includes T-shaped insulating base 8, lifting frame 9 and pressing plate 10, and the lifting frame 9 and the pressing plate 10 are provided with a bayonet that matches the foam release device 11, the lifting frame 9 is connected with the T-shaped insulating base 8 through screw thread, and the pressing plate 10 is connected with the top of the lifting frame 9 through screw. The bottom of the T-shaped insulating base 8 is provided with an insulating pad. The insulating tray is a nylon or polyethylene injection molding part. The compressed nitrogen foam generating device 17 is connected with the foam release device 11 through the hose 18, and the bottom of the compressed nitrogen foam generating device 17 is provided with an insulating tray 19; the high-voltage electrode output by the high-voltage transformer 3 is connected with the metal plate 5, the compressed nitrogen foam generating device 17 and the foam release device 11 through the cable 20, and the high-voltage transformer is a 100-kilovolt transformer.

[0026] The insulator 7 is a rod-shaped suspension composite insulator, and the model is FXBW110 / 70.

[0027] When the utility model is used, after connecting all the devices in the test model, first, start the compressed nitrogen foam generating device 17, so that the foam release device 11 can uniformly spray continuous foam, then power on the high-voltage transformer 3, and boost to the required voltage of the test standard, at this time, record the leakage current at the foam release device 11. The size of the leakage current is the standard for judging whether the foam extinguishing agent is qualified or not.

[0028] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A fire-fighting foam conductivity detection tool, characterized in that, The device comprises an insulating support, a charged metal hanging plate support, a compressed nitrogen foam generating device, a foam releasing device and a high-voltage transformer, the charged metal hanging plate support comprises a rectangular frame, a metal plate, a base and an insulator, the rectangular frame is vertically arranged on the base, and the four corners of the metal plate are connected with the four corners of the rectangular frame through four insulators; the insulating support comprises a T-shaped insulating base, a lifting frame and a pressing plate, a clamping hole matched with the foam releasing device is arranged between the lifting frame and the pressing plate, the lifting frame is connected with the T-shaped insulating base through threads, and the pressing plate is connected with the top of the lifting frame through screws; the compressed nitrogen foam generating device is connected with the foam releasing device through a hose, and the bottom of the compressed nitrogen foam generating device is provided with an insulating tray; high-voltage electrodes output by the high-voltage transformer are connected with the metal plate, the compressed nitrogen foam generating device and the foam releasing device through cables respectively, and the high-voltage transformer is a 100-kilovolt transformer.

2. The electrically conductive detection tool for fire-fighting foam according to claim 1, characterized in that, The insulator is a rod-shaped suspension composite insulator.

3. The electrically conductive detection tool for fire-fighting foam according to claim 1, characterized in that, The metal plate is a square or a rectangle, the length of the side is not less than 1000 mm, the center is level with the nozzle of the foam releasing device, and the distance between the metal plate and the foam releasing device is 4 meters.

4. The fire-fighting foam electrically conductive detection tooling of claim 1, wherein, Two ends of the insulator are respectively provided with connecting plates, and the connecting plates are connected with the insulator through threaded connection sleeves.

5. The fire-fighting foam electrically conductive detection tooling of claim 1, wherein, The four corners of the rectangular frame are respectively provided with corner plates, and the corner plates are connected with the rectangular frame through continuous welds.

6. The fire-fighting foam electrically conductive detection tool of claim 1, wherein, The bottom of the T-shaped insulating base is provided with an insulating pad, and the insulating tray is a nylon or polyethylene injection molding part.

7. The fire-fighting foam electrically conductive detection tool of claim 1, wherein, The base is provided with a receiving groove, and the receiving groove is arranged directly below the metal plate.

Images