Portable fireproof coating appearance detection device

Abstract

The utility model discloses a portable fireproof coating appearance detection device which comprises a storage box, a data transmission line, a displacement thickness measurement probe, a displacement data processing system, a crack width measurement probe, a display screen and a storage module. A displacement data processing system, a magnifying lens display system and a storage module are accommodated in the accommodating box; the displacement data processing system and the magnifying lens display system are electrically connected with the storage module respectively; the displacement data processing system and the displacement thickness measuring probe are electrically connected through a data transmission line; the display screen and the crack width measuring probe are electrically connected through a data transmission line. And the effective storage of related instruments for measuring the thickness, the crack, the damaged area and the crack width of the fireproof coating layer on the surface of the steel structure substrate can be realized. Field measurement is facilitated, and omission of measurement tools is avoided.

Description

TECHNICAL FIELD

[0001] The application relates to the field of fireproof coating construction quality detection, in particular to a portable fireproof coating appearance detection device. BACKGROUND

[0002] Steel structure building components need to be protected by fire to meet the corresponding fire resistance limit requirements under the building fire resistance level specified in the relevant specifications. The most commonly used fire protection method in current actual construction engineering is to spray steel structure fireproof coating. Whether the function of the steel structure fireproof coating used in engineering can normally play depends on whether the structure of the coating layer is complete. The current "Steel Structure Fireproof Coating Application Technical Specification" (T / CECS 24-2020) stipulates that the fireproof coating should not have leakage, delamination, hollowing, obvious depression, etc. The coating layer should not have penetrating cracks, the crack width should not be greater than 0.5mm, and the number of cracks per unit area is also required. However, after long-term use or vibration damage caused by earthquakes, strong winds, etc., the structure of the coating layer will be locally cracked, peeled off, etc., resulting in that the use state does not meet the requirements of the specification.

[0003] Due to the existence of local damage to the structure of the coating layer, the temperature rise condition of the steel member under fire will also change, causing the change of the fire resistance limit, which will lead to deviation in the cognition and grasp of the building fire resistance performance at the fire extinguishing and rescue site.

[0004] At the same time, the current "Fire Product Site Inspection Judgment Rules" (XF 588-2012) also puts forward related requirements for the on-site inspection of steel structure fireproof coating, including the inspection of the appearance cracking, peeling and coating thickness of the coating layer.

[0005] The existing fireproof coating appearance detection equipment has the following problems: the function is single, and the detection of the appearance of the fireproof coating often needs to be completed by jointly using multiple instruments and equipment, which is not convenient for use in the construction acceptance and fire supervision and inspection processes.

[0006] The information disclosed in the background section is only intended to increase the understanding of the overall background of the present application, and should not be regarded as acknowledging or implying in any form that the information constitutes prior art known to those skilled in the art. CONTENT OF THE PRESENT INVENTION

[0007] The application provides a portable fireproof coating appearance detection device, which has high integration and is convenient for carrying and on-site measurement.

[0008] The application provides a portable fireproof coating appearance detection device, which comprises a storage box, a data transmission line, a displacement thickness measurement probe, a displacement data processing system, a crack width measurement probe, a display screen and a storage module.

[0009] The storage box contains a displacement data processing system, a magnifying glass display system and a storage module; the displacement data processing system and the magnifying glass display system are electrically connected with the storage module;

[0010] The displacement data processing system and the displacement thickness measuring probe are electrically connected through a data transmission line; the display screen and the crack width measuring probe are electrically connected through a data transmission line.

[0011] Preferably, the storage box comprises a reticle plate, which is detachably arranged on the outer wall of the storage box.

[0012] Preferably, the reticle plate comprises a handle and a transparent hard plate; the handle is arranged on the outer side wall of the middle part of the transparent hard plate; when installed on the storage box, the handle is outwardly arranged.

[0013] Preferably, a plurality of transparent grids are arranged on the transparent hard plate; the area of the grid is 100mm 2 ~400mm 2 .

[0014] Preferably, the displacement thickness measuring probe comprises a probe, a resistance displacement meter and a displacement measuring rod; one end of the probe is inserted into the displacement measuring rod and is slidably arranged in the displacement measuring rod; the other end of the displacement measuring rod is slidably arranged in the resistance displacement meter and is electrically connected with a sliding rheostat arranged in the resistance displacement meter.

[0015] Preferably, the displacement thickness measuring probe comprises a spring and a fixed disc; the fixed disc is arranged on one end of the probe; one end of the spring is compressively arranged on the fixed disc, and the other end of the spring is compressively arranged on the inner end face of the displacement measuring rod facing the probe.

[0016] Preferably, the crack width measuring probe comprises a barrel and an electronic magnifying glass; the electronic magnifying glass is arranged in the barrel; the electronic magnifying glass is electrically connected with the display screen.

[0017] Preferably, the electronic magnifying glass is recessively arranged in the barrel.

[0018] Preferably, the storage box comprises a soft rope ruler; the soft rope ruler is arranged in the storage box.

[0019] Preferably, the storage box comprises a detection device core shell; the detection device core shell is arranged in the storage box; the storage box comprises a box body and a cover plate; an opening is arranged on one side of the box body; the cover plate is arranged on the opening; the displacement data processing system and the storage module are arranged in the box body; the display screen is embedded in the cover plate.

[0020] The present application has the following technical effects relative to the prior art:

[0021] 1) The portable fireproof coating appearance detection device provided by the application can realize effective storage of measuring instruments for measuring the thickness, cracks, damaged area and crack width of the fireproof coating layer on the surface of the steel structure substrate. The device is convenient for on-site measurement and avoids missing measuring tools. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 The portable fireproof coating appearance detection device provided by the application in at least one embodiment;

[0023] Figure 2 The internal schematic diagram of the detection device core shell in at least one embodiment provided by the application;

[0024] Figure 3 The side surface schematic diagram of the detection device core shell in at least one embodiment provided by the application;

[0025] Figure 4 The schematic diagram of the use of the magnetic thickness measuring probe in at least one embodiment provided by the application;

[0026] Figure 5 The schematic diagram of the displacement thickness measuring probe in at least one embodiment provided by the application;

[0027] Figure 6 The schematic diagram of the use of the displacement thickness measuring probe in at least one embodiment provided by the application;

[0028] Figure 7 The circuit schematic diagram of the sliding rheostat in at least one embodiment provided by the application;

[0029] Figure 8 The schematic diagram of the crack width measuring probe in at least one embodiment provided by the application;

[0030] Figure 9 The schematic diagram of the working principle of the electronic magnifying glass and magnifying glass display system in at least one embodiment provided by the application;

[0031] Figure 10 The schematic diagram of the use of the crack width measuring probe in at least one embodiment provided by the application;

[0032] Figure 11 The schematic diagram of the soft rope ruler in at least one embodiment provided by the application;

[0033] Figure 12 The schematic diagram of the use of the hundred grid in at least one embodiment provided by the application;

[0034] Figure 13 The schematic diagram of the storage box in at least one embodiment provided by the application;

[0035] Figure 14 The schematic diagram of the box cover buckle locking of the storage box in at least one embodiment provided in the application;

[0036] Figure 15 The schematic diagram of the box cover buckle unlocking of the storage box in at least one embodiment provided in the application.

[0037] Legend:

[0038] The fireproof coating layer 91, the steel structure base body 92,

[0039] The detection device core shell 1, the storage module 11, the magnetic force signal processing system 12, the displacement data processing system 13, the magnifying glass display system 14, the display screen 15, the battery 16, the power switch 17, the measurement button panel 18, the data transmission line interface 19,

[0040] The magnetic force thickness measuring probe 2, the displacement thickness measuring probe 3, the crack width measuring probe 4, the soft rope ruler 5, the grid net plate 6, the storage box 7, the data transmission line 8,

[0041] The probe 31, the resistance displacement meter 32, the displacement measuring rod 33 DETAILED DESCRIPTION

[0042] In order to make the purpose, technical scheme and advantages of the embodiments of the present application more clear, the technical scheme in the embodiments of the present application will be described clearly and completely below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. The components of the embodiments of the present application described and shown in the drawings herein can be arranged and designed in various different configurations.

[0043] Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0044] Technical means not described in detail in the present application and not used to solve the technical problems of the present application are set according to common knowledge in the art, and various common knowledge setting methods can be implemented.

[0045] Referring to Figures 1-14 The portable fireproof coating appearance detection device provided in the present application comprises: a detection device core shell 1, a magnetic force thickness measuring probe 2, a displacement thickness measuring probe 3, a crack width measuring probe 4, a soft rope ruler 5, a grid net plate 6, a storage box 7, and a data transmission line 8.

[0046] The detection device core shell 1 comprises: a box body, a cover body, a storage module 11, a magnetic force signal processing system 12, a displacement data processing system 13, a magnifying glass display system 14, a display screen 15, a battery 16, a power switch 17, a measurement button panel 18, and a data transmission line interface 19. An open side wall of the box body is provided, and the cover body is provided on the open side wall of the box body. The storage module 11, the magnetic force signal processing system 12, the displacement data processing system 13, the magnifying glass display system 14, and the battery 16 are accommodated and arranged on the opposite side walls in the box body. The display screen 15, the measurement button panel 18, and the power switch 17 are spaced apart and embedded in the cover body and are arranged through the cover body. The data transmission line interface 19 is accommodated and arranged on the side wall of the box body and is electrically connected with the magnetic force signal processing system 12, the displacement data processing system 13, and the magnifying glass display system 14 in the box body, respectively.

[0047] The battery 16 is electrically connected with the magnetic force signal processing system 12, the displacement data processing system 13, the magnifying glass display system 14, the display screen 15, and the power switch 17, respectively, and plays a power supply role.

[0048] The magnetic force thickness measurement probe 2 is electrically connected with the magnetic force signal processing system 12 through the data transmission line 8 and the data transmission line interface 19. The displacement thickness measurement probe 3 is electrically connected with the displacement data processing system 13 through the data transmission line 8 and the data transmission line interface 19. The crack width measurement probe 4 is electrically connected with the magnifying glass display system 14 through the data transmission line 8 and the data transmission line interface 19. The storage module 11 is electrically connected with the magnetic force signal processing system 12, the displacement data processing system 13, and the magnifying glass display system 14, respectively. The measurement results of each probe are collected and stored in the storage module 11. The model of the storage module 11 used is YMTC EC230, and the manufacturer is Changjiang Storage.

[0049] The data transmission line 8 can be accommodated and arranged in the detection device core shell 1 according to the use requirement, or can be arranged outside the box body and is electrically connected with the magnetic force thickness measurement probe 2, the displacement thickness measurement probe 3, and the crack width measurement probe 4, respectively.

[0050] The magnetic force thickness measurement probe 2 adopts a magnetic resistance method thickness gauge. The magnetic force thickness measurement probe 2 and the steel structure base body 92 are arranged with a fireproof coating layer 91 therebetween. The magnetic force thickness measurement probe 2 is placed on the surface of the fireproof coating layer 91 during measurement. The magnetic force thickness measurement probe 2 and the steel structure base body 92 form a closed magnetic circuit. Due to the existence of the non-magnetic fireproof coating layer 91, the magnetic resistance of the magnetic circuit is increased. The change of the magnetic resistance changes with the thickness of the measured fireproof coating layer 91. The magnetic force thickness measurement probe 2 is suitable for the thickness measurement of the fireproof coating layer 91 with a thickness of ≤10 mm. In the device, it is usually used for the thickness measurement of the intumescent steel structure fireproof coating, and the resolution can reach 1 μm. The model of the magnetic force thickness measurement probe 2 used and the magnetic force signal processing system 12 is DR9000S, and the manufacturer is Dongru Instrument.

[0051] The displacement thickness measuring probe 3 is a traditional spring-loaded resistance displacement gauge modified, and a probe 31 vertically piercingly inserted into the fireproof coating layer 91 is arranged at the front end thereof. One end of the probe 31 can pierce into the fireproof coating layer 91, and the other end is inserted into the displacement measuring rod 33 and movably connected with the displacement measuring rod 33. A limiting disc is arranged on the end of the probe 31 extending into the displacement measuring rod 33. The spring is accommodated in the limiting disc and one end of the displacement measuring rod 33. The probe 31 is movably inserted into the displacement measuring rod 33 through the through hole arranged on the end face of the displacement measuring rod 33. The spring-loaded displacement measuring rod 33 can freely move along the direction of the probe 31 within the length range of the probe 31.

[0052] The other end of the displacement measuring rod 33 is inserted into the resistance displacement gauge 32 and slidably connected with the resistance displacement gauge 32. The inserted end of the displacement measuring rod 33 is electrically connected with the sliding rheostat arranged in the resistance displacement gauge 32, so as to obtain the resistance change value caused by the distance change. The resistance displacement gauge 32 is taken as the reference scale of displacement measurement.

[0053] During measurement, the probe 31 pierces the fireproof coating layer 91 at the measurement point of the fireproof coating, and the top end of the probe 31 contacts the steel structure substrate 92. The displacement measuring rod 33 is released, and the front end of the displacement measuring rod 33 is tightly attached to the outer surface of the fireproof coating. The distance between the top end of the probe 31 and the front end of the spring-loaded displacement measuring rod 33 is the thickness of the fireproof coating layer 91. Figure 6 The probe 31 is shown to extend out of the displacement measuring rod 33; Figure 7 For easy understanding, the fireproof coating layer 91 is shown to be cut by a part. In actual measurement, the probe 31 is only inserted into the fireproof coating layer 91, and the fireproof coating layer 91 does not need to be cut. After the probe 31 is inserted into the fireproof coating layer 91, the thickness of the fireproof coating layer 91 at each measurement point can be accurately measured. The resistance value obtained by the resistance displacement gauge 32 changes with the distance between the top end of the probe 31 and the hole end face of the displacement measuring rod 33, and the change of the current can reflect the change of the thickness of the fireproof coating layer 91. The resolution of the displacement thickness measuring probe 3 is lower than that of the magnetic force thickness measuring probe 2, but it can be used for measuring the thickness of the fireproof coating layer 91 greater than 10 mm, and is usually used for measuring the thickness of the non-expanding steel structure fireproof coating in the device.

[0054] Reference is made to Figure 8The crack width measuring probe 4 includes a cylinder and an electronic magnifying glass 41. The electronic magnifying glass 41 is housed within the open end of the cylinder and recessed into the cylinder, spaced apart from the periphery of the top surface of the cylinder to protect the end face of the electronic magnifying glass 41. The magnification of the electronic magnifying glass 41 is 20 to 50 times. When the crack width measuring probe 4 is placed on each detection point of the fireproof coating layer 91, the presence of cracks at the detection point can be determined by magnifying the surface image at that point using the electronic magnifying glass 41. The magnified view is then transmitted to the display screen 15 of the core housing 1 of the detection device, facilitating observation and judgment by the inspection personnel and measurement of the crack width. Alternatively, the electronic magnifying glass 41 can be electrically connected to the magnifying glass display system 14. After processing the image, the magnifying glass display system 14 can mark the magnified image with a scale of <0.1mm resolution, which can be directly displayed on the display screen 15 for easy reading of the crack width by the operator. The working principle diagram of the electronic magnifying glass 41 and the magnifying glass display system 14 is shown below. Figure 9 As shown. By Figure 9 As can be seen, the specific signal transmission process and the modules used are all existing commercially available equipment and circuit structures, and will not be elaborated here.

[0055] The flexible rope ruler 5 can be fixed at one end to the side wall of the core housing 1 of the testing device, while the other end is free; alternatively, both ends can be free and stored only inside the housing. The flexible rope ruler 5 has graduated lines drawn on its top, allowing measurement of the actual length of the fire-retardant coating cracks and the spacing between multiple cracks along their direction.

[0056] The grid panel 6 is made of a transparent rectangular rigid plastic sheet. Multiple grid lines 61, spaced 10mm or 20mm apart, are drawn parallel to the long and short sides of the panel. The grid lines in both directions enclose an area of ​​100mm². 2 ~400mm 2 A fixed-size transparent grid 62 is used. The grid panel 6 is picked up by the handle 63 and placed over the damaged area of ​​the fire-retardant coating layer 91. When counting the damaged areas of the fire-retardant coating layer 91, the total area of ​​damage can be obtained by counting the number of broken grids 62 in the covered area and multiplying this number by the area of ​​each grid 62. The grid panel 6 is housed within a storage box 7.

[0057] The storage box 7 includes: a box body 71, a box lid 72, and a cushioning and shock-absorbing material layer 73. The cushioning and shock-absorbing material layer 73 is provided on the inner side wall of the box body 71.

[0058] A plurality of buckles 74 are arranged on the outer top surface of the box cover 72, one end of the buckle 74 is fixed on the box cover 72 and is hinged with the box cover 72, and the other end is buckled on the four circumferential edges of the grid plate 6; after the buckle 74 is locked, the grid plate 6 is fixed on the box cover 72, after the grid plate 6 is fixed, the handle 63 of the grid plate 6 can be used as a handle of the storage box 7. After the buckle 74 is loosened, the grid plate 6 can be taken off and used alone.

[0059] Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments or make equivalent replacement to part of the technical features, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A portable fire retardant coating appearance detection device, characterized by, It includes: The storage box (7), the data transmission line (8), the displacement thickness measuring probe (3), the displacement data processing system (13), the crack width measuring probe (4), the display screen (15), the storage module (11); The storage box (7) contains the displacement data processing system (13), the magnifying glass display system (14), and the storage module (11); the displacement data processing system (13) and the magnifying glass display system (14) are respectively connected with the storage module (11) by electricity; The displacement data processing system (13) and the displacement thickness measuring probe (3) are connected by the data transmission line (8); the display screen (15) and the crack width measuring probe (4) are connected by the data transmission line (8).

2. The apparatus of claim 1, wherein, It includes: The crosshatch board (6) is detachably arranged on the outer wall of the storage box (7).

3. The apparatus of claim 2, wherein, The crosshatch board (6) includes: a handle (63) and a transparent hard plate; the handle (63) is arranged on the outer side wall of the middle part of the transparent hard plate; when installed on the storage box (7), the handle (63) is outwardly arranged.

4. The apparatus of claim 2, wherein, A plurality of transparent grids (62) are provided on the transparent hard board; the area of the grid (62) is 100mm 2 ~400mm 2 .

5. The apparatus of claim 1, wherein, The displacement thickness measuring probe (3) includes: a probe (31), a resistance displacement meter (32), and a displacement measuring rod (33); one end of the probe (31) is inserted into the displacement measuring rod (33) and is slidably arranged in the displacement measuring rod (33); the other end of the displacement measuring rod (33) is slidably arranged in the resistance displacement meter (32) and is electrically connected with a sliding resistor arranged in the resistance displacement meter (32).

6. The apparatus of claim 5, wherein, The displacement thickness measuring probe (3) includes: a spring and a fixed disc; the probe (31) is accommodated in the fixed disc arranged on one end; one end of the spring is compressed on the fixed disc, and the other end is compressed on the inner end face of the displacement measuring rod (33) facing the probe (31).

7. The apparatus of claim 1, wherein, The crack width measuring probe (4) includes: a cylinder and an electronic magnifying glass (41); the electronic magnifying glass (41) is accommodated in the cylinder; the electronic magnifying glass (41) is electrically connected with the display screen (15).

8. The apparatus of claim 7, wherein, The electronic magnifying glass (41) is recessed and accommodated in the cylinder.

9. The apparatus of claim 1, wherein, It includes: The soft rope ruler (5) is accommodated in the storage box (7).

10. The apparatus of claim 1, wherein, It includes: The detection device core shell (1); The detection device core shell (1) is accommodated in the storage box (7); The storage box (7) includes: a box body and a cover plate; an opening is arranged on one side of the box body; the cover plate is arranged on the opening; the displacement data processing system (13) and the storage module (11) are accommodated in the box body; the display screen (15) is embedded in the cover plate.

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