A high-rise building cable shaft fire blocking real-type test platform with comparative test function and sensor arrangement method

Abstract

The present invention relates to the field of electric power technology, and discloses a high-rise building cable shaft fireproof plugging real test platform and a sensor arrangement method with a comparative test function, including a cable shaft fireproof plugging real test platform, characterized in that it has a fireproof door, a high-temperature resistant double-layer glass observation window, a blower, and a floor slab, the floor slab is used to separate the upper and lower spaces, and a partition wall and a cover plate are arranged above the cable shaft real test platform. A gas blowtorch and a cable tray are also provided. Thermocouples, temperature and humidity sensors, gas sensors, and monitoring cameras are used to monitor the changes in various state quantities during the test. The device uses a partition wall to separate the upper space of the cable shaft real test platform into two independent spaces, and can test the performance of two groups of fireproof plugging at the same time, which speeds up the test process. And it reduces the influence of external interference factors on the accuracy of the test results, can better control the test variables, and achieve the purpose of comparing the performance of the two groups of fireproof plugging.

Description

Technical Field

[0001] The invention relates to the field of electric power technology, and in particular to a high-rise building cable shaft fireproof plugging real-type test platform with a comparative test function and a sensor arrangement method. Background Art

[0002] In high-rise buildings, electrical line fires burn faster, and the burning rate of vertical cables is generally about three times that of horizontal cables. In addition, once a fire occurs in a cable shaft, it is easy for the "chimney effect" to occur, and the spread of the fire will be increased several times, eventually becoming a fast channel for the spread of fire. At present, research on fireproof sealing of cable shafts in high-rise buildings mainly stays on construction technology and sealing materials, and there is little overall evaluation of the fireproof sealing system.

[0003] Relying on the cable shafts in high-rise buildings in existing buildings to evaluate the fireproof sealing performance not only consumes a lot of financial and material resources, but also it is difficult to find a suitable test site. To this end, the present application proposes a real-type test platform and sensor arrangement method for fireproof sealing of cable shafts in high-rise buildings with comparative test functions. The real-type test platform adopts a full-scale model, which solves the problem of finding a suitable test site for performance evaluation of cable shaft fireproof sealing, and can simultaneously perform performance tests on two groups of different fireproof sealing construction processes, which can speed up the test process. In addition, the real-type test platform is reusable.

[0004] On April 22, 2022, the applicant applied for an invention patent with application number: 2022104270004 and the name: "A real test platform for fire-proof sealing of cable shafts in high-rise buildings and a sealing performance test method". However, during the research and development process, the applicant felt obvious defects. Due to the insufficient arrangement of sensors, etc., more effective and rapid testing cannot be carried out, and it does not have a rapid comparison function. Summary of the invention

[0005] The purpose of the present invention is to provide a high-rise building cable shaft fireproof plugging real test platform and sensor arrangement method with comparative test function. The device has the function of conducting comparative tests and can perform performance tests on two fireproof plugging processes at the same time, thereby speeding up the test process.

[0006] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is: a high-rise building cable shaft fire blocking real test platform with a comparative test function, including a cable shaft fire blocking real test platform, characterized in that a fire door is installed on the front of the cable shaft fire blocking real test platform, an observation window is arranged on the back of the cable shaft fire blocking real test platform, a blower is arranged on the side wall of the cable shaft fire blocking real test platform, a floor is arranged in the middle and upper part of the cable shaft fire blocking real test platform to separate the upper and lower spaces, a partition wall is arranged in the space above the cable shaft fire blocking real test platform, a cover plate is arranged above the cable shaft fire blocking real test platform, a gas blowtorch is arranged on the middle inner wall of the cable shaft fire blocking real test platform, and a cable tray is arranged on the inner wall of the cable shaft fire blocking real test platform.

[0007] Furthermore, the fire door is an outward opening structure; the fire door adopts a ready-made fire door that can be purchased on the market.

[0008] Furthermore, the observation window is made of double-layer glass; the observation window is made of high-temperature resistant material to prevent it from being damaged during the test.

[0009] Furthermore, the blowers are arranged on the left and right side walls so that the oxygen supply meets the combustion demand.

[0010] Furthermore, the floor slab adopts a reinforced concrete structure; holes of the same size are opened on both sides of the floor slab for passing cables and cable trays.

[0011] Furthermore, the partition wall adopts a reinforced concrete structure.

[0012] Furthermore, the cover plate adopts a stainless steel structure; the gap between the cover plate and the wall is sealed with a sealant to achieve the purpose of sealing; and the cover plate adopts a flip-top structure.

[0013] Furthermore, the gas burner uses liquefied petroleum gas as fuel; the gas burner uses a flow meter to control the flow.

[0014] Furthermore, cables are fixed on the cable tray; the cable tray needs to be replaced after being used once.

[0015] A sensor arrangement method, characterized in that the sensor types include thermocouples, temperature and humidity sensors, gas sensors, and surveillance cameras.

[0016] Furthermore, the thermocouple is arranged in the lower space to monitor the temperature of the space below the cable shaft real test platform; the thermocouple is arranged on the back of the fireproof plug to monitor the temperature rise of the back of the fireproof plug.

[0017] Furthermore, the temperature and humidity sensors are respectively arranged in the two spaces on the upper layer to monitor the humidity changes in the upper space.

[0018] Furthermore, the gas sensor measures the concentrations of hydrogen chloride, carbon monoxide and dust in the two upper spaces respectively.

[0019] Furthermore, the monitoring cameras are arranged on both sides of the observation window to observe the internal flame burning situation; the monitoring cameras are arranged above the fireproof blockage to observe the changes in the fireproof blockage state.

[0020] Compared with the prior art, the present invention has the following beneficial effects: the performance of two different cable shaft fire blocking construction processes is evaluated by using a real cable shaft test platform, thereby shortening the test time. The influence of external interference factors on the accuracy of the test results is reduced, and the test variables can be better controlled to achieve the purpose of comparing the performance of two groups of fire blocking. In addition, the problem of high test cost and difficulty in finding a suitable test site for testing in real high-rise building cables is solved. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 Schematic diagram of the structure of the device according to the embodiment of the present invention.

[0022] Figure 2 It is a schematic diagram of the thermocouple tree structure.

[0023] Figure 3 This is a schematic diagram of the distribution of chip thermal resistors.

[0024] Figure 4 is a schematic diagram of the temperature measured by the thermocouple tree.

[0025] Figure 5 It is the highest temperature of the back-fire surface of the fireproof seal.

[0026] Figure 6 It is the upper space and ambient temperature of the real test platform.

[0027] Figure 7 It is the upper space and environmental humidity of the real test platform.

[0028] Figure 8 It is the dust concentration measured in the upper space of the real test platform.

[0029] Fig. 9 It is the carbon monoxide concentration measured in the upper space of the real test platform.

[0030] Fig.10 This is an image of burning cables captured by a surveillance camera.

[0031] Fig.11It is the image of the back-fire surface of the fireproof blockage taken by the surveillance camera. Figure 1 Middle: 1-fire door; 2-observation window; 3-air blower; 4-floor; 5-partition wall; 6-flip cover; 7-liquefied petroleum gas blowtorch; 8-cable tray; 9-cable line; 10-surveillance camera; 11-thermocouple tree; 12-fireproof blocking module. DETAILED DESCRIPTION

[0032] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0033] It should be noted that the following detailed descriptions are illustrative and are intended to provide further explanation of the present application. Unless otherwise specified, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which the present application belongs.

[0034] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0035] The present invention provides a high-rise building cable shaft fire blocking real-type test platform with comparative test function, such as Figure 1 As shown, it includes a fire door 1 opened at the bottom of the cable shaft fire blocking real test platform, an observation window 2 opened at the rear side of the cable shaft fire blocking real test platform for observing the burning of cables, a fan 3 opened on the left and right side walls of the cable shaft fire blocking real test platform, a floor 4 for blocking the upper and lower spaces, the upper part of the floor 4 is the upper space, and the upper and lower parts of the floor 4 are the lower space, a partition wall 5 for dividing the upper space of the cable shaft fire blocking real test platform into two independent spaces, a flip cover 6 opened at the top of the cable shaft fire blocking real test platform, a liquefied petroleum gas blowtorch 7 arranged in the middle of the cable shaft fire blocking real test platform, a cable tray 8 vertically fixed on the inner wall of the cable shaft fire blocking real test platform, a cable line 9 fixed on the cable tray 8, a monitoring camera 10 for observing the burning of the cable and the blocking surface, and a thermocouple tree 11 for monitoring the temperature change of the lower space.

[0036] Among them, the high-rise building cable shaft fire blocking real test platform with comparative test function has a height of 3500mm, an inner length of 1800mm, an inner width of 1500mm, a floor thickness of 120mm, and a side wall thickness of 240mm.

[0037] Among them, the main structure of the high-rise building cable shaft fire blocking real-type test platform with comparative test function is built with refractory bricks, the floor is made of reinforced concrete, and there are 600mm*200mm openings on the left and right sides for passing cable trays and cables. The top is made of stainless steel flip cover.

[0038] The present invention also provides a sensor arrangement method, which includes arranging a temperature sensor, a temperature and humidity sensor, a gas sensor, and a monitoring camera.

[0039] Among them, the temperature sensors include chip thermal resistors and needle-type thermocouples. The chip thermal resistors are used to monitor the temperature changes on the back of the fireproof plug, and the needle-type thermocouples are used to monitor the temperature changes in the space below the cable shaft fireproof plugging real test platform. The chip thermal resistors are installed on the back of the fireproof plugging system, and the real thermocouples are fixed on the thermocouple tree and installed in the lower space of the fireproof plug; the temperature and humidity sensors are respectively arranged in the two independent spaces on the upper layer of the cable shaft fireproof plugging real test platform and the external environment. There are three temperature and humidity sensors, two of which are located in the two independent spaces on the upper layer, and the other one is It is placed outside the real-type test platform for fire blocking of cable shafts in high-rise buildings with comparative test functions, and is used to monitor changes in temperature and humidity in the upper space and the external environment; the gas sensor includes a dust sensor and a carbon monoxide sensor, which is used to monitor changes in gas concentration in the upper space. There are two dust sensors and two carbon monoxide sensors, which are divided into two groups, each group consists of a dust sensor and a carbon monoxide sensor, which are installed in two independent spaces on the upper floor respectively; monitoring cameras are arranged on both sides of the observation window and above the fire blocking, and are used to monitor the flame shape, cable status changes and fire blocking status during the combustion test.

[0040] Figure 2 The specific dimensions of the thermocouple tree used to monitor the temperature change of the lower space of the cable shaft fireproof plugging real test platform. Among them, a total of 12 needle-type thermocouples are arranged to monitor the temperature change of the space around the cable during the combustion test. The thermocouple tree is located in the lower space, and the upper space is not distributed; the chip thermal resistor is located in the upper space to monitor the back-fire surface temperature of the fireproof plugging system.

[0041] Thermocouple tree 11 is located in the center of the lower space. CH1, CH2, CH3, CH4, CH5, CH6, CH7, CH8, CH9, CH10, CH11 and CH12 are respectively the first pin-type thermocouple, the second pin-type thermocouple, the third pin-type thermocouple, the fourth pin-type thermocouple, the fifth pin-type thermocouple, the sixth pin-type thermocouple, the seventh pin-type thermocouple, the eighth pin-type thermocouple, the ninth pin-type thermocouple, the tenth pin-type thermocouple, the eleventh pin-type thermocouple and the twelfth pin-type thermocouple. CH12 and CH11 are on the same horizontal plane and CH12 and CH11 are connected to the cable shaft of a high-rise building with a comparative test function. The distance between the centers of the fire-proof plugging real-type test platforms is 400mm, and the distance between CH12, CH11 and the inner bottom surface of the high-rise building cable shaft fire-proof plugging real-type test platform with comparative test function is 2100mm; CH10 and CH9 are on the same horizontal plane, and the distance between CH10, CH9 and the centers of the high-rise building cable shaft fire-proof plugging real-type test platform with comparative test function is 400mm, and the distance between CH10, CH9 and the inner bottom surface of the high-rise building cable shaft fire-proof plugging real-type test platform with comparative test function is 1900mm; CH8 and CH7 are on the same horizontal plane, and CH8, CH7 and The distance between the centers of the real-type test platforms for fire-proof plugging of cable shafts in high-rise buildings with comparative test functions is 400mm, and the distance between CH8, CH7 and the inner bottom surface of the real-type test platform for fire-proof plugging of cable shafts in high-rise buildings with comparative test functions is 1700mm; CH6 and CH5 are on the same horizontal plane and the distance between CH6, CH5 and the centers of the real-type test platforms for fire-proof plugging of cable shafts in high-rise buildings with comparative test functions is 400mm, and the distance between CH6, CH5 and the inner bottom surface of the real-type test platform for fire-proof plugging of cable shafts in high-rise buildings with comparative test functions is 1500mm; CH4 and CH3 are on the same horizontal plane. On the plane, the distance between CH4, CH3 and the center of the real-type test platform for fire sealing of high-rise cable shafts with comparative test function is 400mm, and the distance between CH4, CH3 and the inner bottom surface of the real-type test platform for fire sealing of high-rise cable shafts with comparative test function is 1200mm; CH2 and CH1 are on the same horizontal plane, and the distance between CH2, CH1 and the center of the real-type test platform for fire sealing of high-rise cable shafts with comparative test function is 400mm, and the distance between CH2, CH1 and the inner bottom surface of the real-type test platform for fire sealing of high-rise cable shafts with comparative test function is 800mm.

[0042] Figure 3This is a layout diagram of the patch thermal resistor for fireproof plugging on the back fire surface (also known as: a cross-sectional view from the top of a real test platform for fireproof plugging of cable shafts in high-rise buildings with comparative test functions). Among them, 2 thermocouples are arranged 25mm away from the cable surface; 1 thermocouple (appropriately select 1 cable) is arranged on the cable surface 25mm away from the back fire surface of the fireproof plugging module; 1 thermocouple is arranged on the bridge surface 25mm away from the back fire surface of the plugging material; 3 thermocouples are arranged on the back fire surface of the reinforced concrete floor frame 25mm away from the edge of the plugging material. The arrangement scheme on both sides of the partition wall is the same, with a total of 14 thermocouples; the plugging layer in this application is the fireproof plugging module; the plugging method: 1) cut the fireproof board according to the outline of the cable bundle and the size of the hole to be plugged; 2) tie a fire barrier tape to each cable; 3) fill all gaps with non-solidifying fireproof mud or solidifying fireproof mud; 4) apply cable fireproof paint on the cables on both sides of the through hole. The plugging processes of different manufacturers are different. This is a more representative plugging process.

[0043] The above-mentioned high-rise building cable shaft fireproof plugging real test platform with comparative test function was built, and the sensors were arranged according to the above-mentioned sensor arrangement method; the liquefied petroleum gas blowtorch was ignited, and each sensor began to record the test data. Among them, the liquefied petroleum gas blowtorch was controlled by the flow meter to have a flow rate of 13L / min, and the flow rates of the liquefied petroleum gas blowtorches on both sides were kept consistent during the test; the idea of ​​a single variable was adopted, and in the test, except for the difference in the fireproof plugging construction process, the other test conditions were kept consistent.

[0044] Figures 4 to 11 For the test data recorded by each sensor, the fire blocking scheme adopts the blocking schemes of companies A and B. Among them, the blocking scheme of company A is as follows: 1) Cut the fireproof board according to the outline of the cable bundle and the size of the hole to be blocked; 2) After arranging the cable position, tie a circle of fireproof tape for each cable; 3) Fill all gaps with non-solidifying fireproof mud or solidifying fireproof mud; 3) Apply cable fireproof paint on the cables on both sides of the through hole.

[0045] Among them, the sealing plan of Company B is as follows: 1) Calculate the amount of fireproof board according to the sealing size, cut and open the cable hole, and fill the cable well after splicing; 2) Then use fire-retardant bag to pile up 120mm thick on the surface of the fireproof material partition and lay it flush with the floor slab; 3) The gap in contact with the wall is sealed and smoothed with flexible organic plugging material, and elastic fireproof sealant is applied on the surface; 4) The gap between the bridge and the cable is sealed with flexible organic plugging material, and the surface is sealed and evenly coated with expandable fireproof sealant; 5) After the sealant is cured, apply cable fire retardant paint on the cables on the upper and lower sides of the sealing layer.

[0046] in, Figure 4 , Figure 5The temperature values ​​are measured by the thermocouple tree and the chip thermal resistor. The thermocouple tree selects the higher temperature area CH5-CH12, and the chip thermal resistor selects the one with the highest temperature; the chip thermal resistors are numbered CH13-CH26; on the left side of the partition wall, 2 thermocouples are arranged 25mm away from the cable surface, numbered CH13 and CH14; on the cable surface, 25mm away from the back-fire surface of the fireproof sealing module, 1 thermocouple chip thermal resistor is arranged, numbered CH15; on the bridge surface, 25mm away from the back-fire surface of the sealing material, 1 chip thermal resistor thermocouple is arranged, numbered CH16; on the back-fire surface of the reinforced concrete floor frame, 25mm away from the edge of the sealing material On the right side of the partition wall, 25mm away from the cable surface, 25mm away from the cable surface, 25mm away from the fireproof sealing module, 1 chip thermal resistor, 25mm away from the back-fire surface, is arranged on the cable surface; on the bridge surface, 25mm away from the back-fire surface of the sealing material, 1 chip thermal resistor, 25mm away from the back-fire surface, is arranged on the bridge surface; on the back-fire surface of the reinforced concrete floor frame, 3 chip thermal resistors, 25mm away from the edge of the sealing material, are arranged on the back-fire surface; according to GB_23864-2009 "Fireproof Sealing Materials", if the temperature rise of any chip thermal resistor on the back-fire surface reaches 180℃, it will lose its thermal insulation, so only the one with the highest temperature is selected.

[0047] There are two types of thermocouples. One is distributed in the lower space of the cable shaft and is used to monitor the temperature changes in the lower space. The other is a chip thermal resistor, which is used to monitor the temperature changes on the back-fire surface. The model of CH1 is WRNK-191. The thermocouple has two terminals, one is connected to the first input terminal of the control module, and the other is connected to the ground terminal. The model of CH2 is WRNK-191. The thermocouple has two terminals, one is connected to the second input terminal of the control module, and the other is connected to the ground terminal. The model of CH3 is WRNK-191. The thermocouple has two terminals, one is connected to the third input terminal of the control module, and the other is connected to the ground terminal. The model of CH4 is WRNK-191. The thermocouple has two terminals, one is connected to the fourth input terminal of the control module, and the other is connected to the ground terminal. The model of CH5 is WRNK-191. The thermocouple has two terminals. The thermocouple has two terminals, one of which is connected to the 5th input terminal of the control module, and the other is connected to the ground terminal; the model of CH6 is WRNK-191, and the thermocouple has two terminals, one of which is connected to the 6th input terminal of the control module, and the other is connected to the ground terminal; the model of CH7 is WRNK-191, and the thermocouple has two terminals, one of which is connected to the 7th input terminal of the control module, and the other is connected to the ground terminal; the model of CH8 is WRNK-191, and the thermocouple has two terminals, one of which is connected to the 8th input terminal of the control module, and the other is connected to the ground terminal; the model of CH9 is WRNK-191, and the thermocouple has two terminals, one of which is connected to the 10th input terminal of the control module, and the other is connected to the ground terminal. The 9th input terminal of the control module, and the other end is connected to the ground terminal; the model of CH10 is WRNK-191, the thermocouple has two terminals, one is connected to the 10th input terminal of the control module, and the other end is connected to the ground terminal; the model of CH11 is WRNK-191, the thermocouple has two terminals, one is connected to the 11th input terminal of the control module, and the other end is connected to the ground terminal; the model of CH12 is WRNK-191, the thermocouple has two terminals, one is connected to the 12th input terminal of the control module, and the other end is connected to the ground terminal; the model of CH13 is WZP-PT100, the thermocouple has two terminals, one is connected to the 13th input terminal of the control module, and the other end is connected to the ground terminal. The model of CH14 is WZP-PT100, the thermocouple has two terminals, one is connected to the 14th input terminal of the control module, and the other is connected to the ground terminal; the model of CH15 is WZP-PT100, the thermocouple has two terminals, one is connected to the 15th input terminal of the control module, and the other is connected to the ground terminal; the model of CH16 is WZP-PT100, the thermocouple has two terminals, one is connected to the 16th input terminal of the control module, and the other is connected to the ground terminal; the model of CH17 is WZP-PT100, the thermocouple has two terminals, one is connected to the 17th input terminal of the control module, and the other is connected to the ground terminal;The model of CH18 is WZP-PT100. The thermocouple has two terminals, one of which is connected to the 18th input terminal of the control module, and the other is connected to the ground terminal; the model of CH19 is WZP-PT100. The thermocouple has two terminals, one of which is connected to the 19th input terminal of the control module, and the other is connected to the ground terminal; the model of CH20 is WZP-PT100. The thermocouple has two terminals, one of which is connected to the 20th input terminal of the control module, and the other is connected to the ground terminal; the model of CH21 is WZP-PT100. The thermocouple has two terminals, one of which is connected to the 21st input terminal of the control module, and the other is connected to the ground terminal; the model of CH22 is WZP-PT100. The thermocouple has two terminals. The model of CH23 is WZP-PT100, the thermocouple has two terminals, one terminal is connected to the 23rd input terminal of the control module, and the other terminal is connected to the ground terminal; the model of CH24 is WZP-PT100, the thermocouple has two terminals, one terminal is connected to the 24th input terminal of the control module, and the other terminal is connected to the ground terminal; the model of CH25 is WZP-PT100, the thermocouple has two terminals, one terminal is connected to the 25th input terminal of the control module, and the other terminal is connected to the ground terminal; the model of CH26 is WZP-PT100, the thermocouple has two terminals, one terminal is connected to the 26th input terminal of the control module, and the other terminal is connected to the ground terminal. ;

[0048] in, Figure 6 , Figure 7 The temperature and humidity data of the two independent spaces on the upper floor and the external environment are measured by the temperature and humidity sensors. The temperature and humidity values ​​are derived from three temperature and humidity sensors, which are respectively arranged in the two independent spaces on the upper floor of the real test platform and the external environment. The temperature and humidity values ​​are real-time measurements, not average values. Purpose: The performance of the fire blocking system will affect the temperature and humidity values ​​of the upper space, so the temperature and humidity values ​​are one of the indicators for judging the performance of the fire blocking system; the ambient temperature and humidity are measured to compare with the temperature and humidity in the independent space to form a reference. The temperature and humidity can indirectly indicate the quality of thermal insulation performance. The smaller the temperature and humidity changes, the better the thermal insulation performance. The temperature and humidity sensor model is RS-WS-WIFI-6J of Jianda Renke Company, which has cloud storage function, and the temperature and humidity data can be obtained from the cloud platform.

[0049] in, Figure 8 , Fig. 9The gas concentration data of the two independent spaces on the upper floor measured by the dust sensor and the carbon monoxide sensor. The above values ​​are all real-time monitoring values. Dust concentration and carbon monoxide concentration are one of the indicators for judging the performance of the fire blocking system. The concentration can indirectly indicate the quality of the fire blocking sealing. The smaller the concentration change, the better the sealing performance. The composite gas detection system JK-2000-M6 developed by Jishunan Technology Co., Ltd. is used. It has built-in dust sensors and carbon monoxide sensors, which can detect two gases at the same time, and the detection system has data storage function.

[0050] Fig.10 , Fig.11 The images of the burning cable and the back-fire surface of the fireproof sealing are obtained by the monitoring camera. Fig.10 The flame burning image of the cable observed through the observation window and the video data obtained by the camera can be used to obtain the flame timing diagram, analyze the flame timing diagram, compare it with the temperature rise data obtained by the thermocouple tree, and establish the connection between the thermocouple temperature rise trend and the flame state; Fig.11 It is the image of the back-fire surface of the fireproof plugging. Through the video data of the back-fire surface of the fireproof plugging, the status of the fireproof plugging module can be observed.

[0051] The performance evaluation of the fire blocking system can be evaluated through several dimensions: thermal insulation, air tightness, and integrity of the fire blocking system. Thermal insulation can be indirectly reflected by the temperature rise of the back-fire surface and the change in temperature and humidity in the upper space. The smaller the temperature rise of the back-fire surface and the change in temperature and humidity in the upper layer, the better the thermal insulation performance; air tightness can be indirectly reflected by the dust concentration and carbon monoxide concentration in the upper space. The smaller the change in dust concentration and carbon monoxide concentration, the better the air tightness; the integrity of the fire blocking system can be directly reflected by video data. By observing the surveillance camera video, you can directly observe whether the blocking is complete.

[0052] In the present application, cables are fixed on the cable tray; the cable tray needs to be replaced after being used once.

[0053] The test platform can perform performance tests on two different fire blocking solutions at the same time. Since it is in the same time period, the influence of external environmental factors such as temperature and humidity is eliminated, making the test more scientific; and it speeds up the test process. It is difficult to find a suitable test site for traditional fire blocking tests. The real test platform provides a place for fire blocking performance testing. In addition, the real test platform can test two solutions at the same time. Compared with a test platform that can only test one solution at a time, the test time is shortened by half; in addition, the test platform is reusable. After one test, only the fire blocking system, cables, and cable trays need to be replaced, and the remaining modules can be used multiple times.

[0054] In this application, the test platform can perform performance tests on two different plugging schemes at the same time. The key point is that the test platform can perform performance tests on two plugging schemes through one test at the same time, so it is called a true test platform with comparative test function; in this application, a partition wall is used to separate the upper space into two independent spaces, so that a control test can be carried out.

[0055] In this application, the accelerated test process is reflected in the following aspects: it is often difficult to find a suitable test site for traditional fire blocking tests, and this real-type test platform provides a test site; and the performance tests of two schemes can be carried out at the same time. Compared with a test platform that can only test one scheme at a time, the test time is shortened by half.

[0056] The above are preferred embodiments of the present invention. Any changes made according to the technical solution of the present invention, as long as the resulting functions do not exceed the scope of the technical solution of the present invention, belong to the protection scope of the present invention.

Claims

1. A sensor arrangement method, using sensors, including temperature sensors, temperature and humidity sensors, and gas sensors, and arranged in a high-rise building cable shaft fire blocking real-type test platform with a comparative test function; characterized in that: The high-rise building cable shaft fire blocking real-type test platform with comparative test function comprises a cable shaft fire blocking real-type test platform, a fire door (1) is installed on the front of the cable shaft fire blocking real-type test platform, an observation window (2) is arranged on the back of the cable shaft fire blocking real-type test platform, a blower (3) is arranged on the side wall of the cable shaft fire blocking real-type test platform, a floor slab (4) is arranged in the upper part of the cable shaft fire blocking real-type test platform to separate the upper and lower space, the upper part of the floor slab (4) is the upper space, the upper and lower parts of the floor slab (4) are the lower space, and the space above the cable shaft fire blocking real-type test platform is provided with a cable shaft fire blocking real-type test platform. A partition wall (5) is provided to divide the upper layer space into two independent spaces; a cover plate (6) is provided above the cable shaft fireproof plugging real-type test platform; a gas blowtorch (7) is provided at the inner wall in the middle of the cable shaft fireproof plugging real-type test platform; a cable tray (8) is provided on the inner wall of the cable shaft fireproof plugging real-type test platform; a cable line (9) is fixed on the cable tray (8); a monitoring camera (10) for observing the burning condition of the cable and the plugging surface; a thermocouple tree (11) for monitoring the temperature change of the lower layer space; and a fireproof plugging module (12) for fireproof plugging; a temperature sensor, a temperature and humidity sensor, and a gas sensor; holes of the same size are opened on both sides of the floor slab for the cables and the cable tray to pass through; The temperature sensor includes a chip thermal resistor and a needle-type thermocouple. The chip thermal resistor is used to monitor the temperature change on the back of the fireproof plug, and the needle-type thermocouple is used to monitor the temperature change in the space below the cable shaft fireproof plugging real test platform. The chip thermal resistor is installed on the back side of the fireproof plugging system, and the needle-type thermocouple is fixed on the thermocouple tree and installed in the lower space of the fireproof plug; the temperature and humidity sensors are respectively arranged in the two independent spaces on the upper layer of the cable shaft fireproof plugging real test platform and the external environment. There are three temperature and humidity sensors, two of which are respectively located in the two independent spaces on the upper layer, and the other is set in the cable shaft fireproof plugging real test platform of a high-rise building with a comparative test function. In addition to the test platform, it is used to monitor the temperature and humidity changes in the upper space and the external environment; the gas sensor includes a dust sensor and a carbon monoxide sensor, which are used to monitor the changes in gas concentration in the upper space. There are two dust sensors and two carbon monoxide sensors, which are divided into two groups. Each group consists of a dust sensor and a carbon monoxide sensor, which are installed in two independent spaces on the upper layer respectively; monitoring cameras are arranged on both sides of the observation window and above the fireproof plugging to monitor the flame shape and cable state changes and fireproof plugging state during the combustion test; a total of 12 needle-type thermocouples are arranged to monitor the temperature changes in the space around the cable during the combustion test. The thermocouple tree is located in the lower space and the upper space The chip thermal resistor is located in the upper space and is used to monitor the back-fire surface temperature of the fireproof sealing system. The thermocouple tree is located in the center of the lower space. CH1-CH12 are the first needle-type thermocouple to the twelfth needle-type thermocouple respectively. CH12 and CH11 are on the same level and the distance between CH12, CH11 and the center of the real test platform for fireproof sealing of cable shafts in high-rise buildings with comparative test function is 400mm. The distance between CH12, CH11 and the bottom surface of the real test platform for fireproof sealing of cable shafts in high-rise buildings with comparative test function is 2100mm. CH10 and CH9 are on the same level and CH 10. The distance between CH9 and the center of the real test platform for fire-proof plugging of cable shafts in high-rise buildings with comparative test function is 400mm, and the distance between CH10, CH9 and the inner bottom surface of the real test platform for fire-proof plugging of cable shafts in high-rise buildings with comparative test function is 1900mm; CH8 and CH7 are on the same horizontal plane and the distance between CH8, CH7 and the center of the real test platform for fire-proof plugging of cable shafts in high-rise buildings with comparative test function is 400mm, and the distance between CH8, CH7 and the inner bottom surface of the real test platform for fire-proof plugging of cable shafts in high-rise buildings with comparative test function is 1700mm;CH6 and CH5 are on the same horizontal plane, and the distance between CH6, CH5 and the center of the real test platform for fire-proof sealing of cable shafts in high-rise buildings with comparative test function is 400mm, and the distance between CH6, CH5 and the inner bottom surface of the real test platform for fire-proof sealing of cable shafts in high-rise buildings with comparative test function is 1500mm; CH4 and CH3 are on the same horizontal plane, and the distance between CH4, CH3 and the center of the real test platform for fire-proof sealing of cable shafts in high-rise buildings with comparative test function is 400mm, and the distance between CH4, CH3 and the inner bottom surface of the real test platform for fire-proof sealing of cable shafts in high-rise buildings with comparative test function is 1200mm; CH2 and CH1 are on the same horizontal plane, and the distance between CH2, CH1 and the center of the real test platform for fire-proof sealing of cable shafts in high-rise buildings with comparative test function is 400mm, and the distance between CH2, CH1 and the inner bottom surface of the real test platform for fire-proof sealing of cable shafts in high-rise buildings with comparative test function is 800mm; The distribution of the chip thermal resistors is as follows: 2 thermocouples are arranged 25 mm away from the cable surface; 1 chip thermal resistor is arranged on the cable surface 25 mm away from the back-fire surface of the fireproof sealing module; 1 chip thermal resistor is arranged on the bridge surface 25 mm away from the back-fire surface of the sealing material; 3 chip thermal resistors are arranged on the back-fire surface of the reinforced concrete floor frame 25 mm away from the edge of the sealing material. The arrangement scheme on both sides of the partition wall is the same. The temperature and humidity values ​​are derived from temperature and humidity sensors, a total of three, which are arranged in two independent spaces on the upper layer of the real test platform and the external environment respectively; The gas sensor includes a dust sensor and a carbon monoxide sensor, which are used to measure the gas concentration data of two independent spaces in the upper layer. The gas sensor is a composite structure, can detect two gases at the same time, and has a data storage function.

2. A sensor arrangement method according to claim 1, characterized in that: The high-rise building cable shaft fire blocking real test platform with comparative test function has a height of 3500mm, an inner length of 1800mm, an inner width of 1500mm, a floor thickness of 120mm and a side wall thickness of 240mm.

3. A sensor arrangement method according to claim 2, characterized in that: The main structure of the high-rise building cable shaft fire blocking real test platform with comparative test function is built with refractory bricks, the floor is made of reinforced concrete, and there are openings of length * width = 600mm * 200mm on the left and right walls for passing cable trays and cables. The top is made of stainless steel flip cover.

4. A sensor arrangement method according to claim 3, characterized in that: The fireproof door is an outward opening structure.

5. A sensor arrangement method according to claim 4, characterized in that: The observation window is made of double-layer glass; the material of the observation window is high-temperature resistant material.

6. A sensor arrangement method according to claim 5, characterized in that: The air blower is arranged on the left and right side walls.

7. A sensor arrangement method according to claim 6, characterized in that: The gap between the cover plate and the wall is sealed with sealant, and the cover plate adopts a flip-up structure.

8. A sensor arrangement method according to claim 7, characterized in that: The gas burner uses liquefied petroleum gas as fuel; the gas burner uses a flow meter to control the flow.

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