CN211013399U - Cable shaft fire prevention shutoff leakproofness detects analogue means - Google Patents
Cable shaft fire prevention shutoff leakproofness detects analogue means Download PDFInfo
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- CN211013399U CN211013399U CN201922269809.5U CN201922269809U CN211013399U CN 211013399 U CN211013399 U CN 211013399U CN 201922269809 U CN201922269809 U CN 201922269809U CN 211013399 U CN211013399 U CN 211013399U
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Abstract
The utility model provides a cable shaft fire prevention shutoff leakproofness detects analogue means, it includes the box that a plurality of stacked from top to bottom, and single box includes 1 at least lateral wall, top surface and the bottom surface that constitute by the metal level that constitute by transparent flame retardant coating, and the bottom surface of box is the bilayer structure, installs the groove of simulation light current circuit installation space and is used for simulating the pipeline of cable on the box. The utility model aims at solving the technical problem that the fire prevention shutoff between the floor seals the effect in the detection cable shaft that prior art can not be fine.
Description
Technical Field
The utility model belongs to electric power safety inspection equipment and auxiliary assembly field thereof, concretely relates to cable shaft fire prevention shutoff leakproofness detects analogue means.
Background
The number of high-rise buildings, super high-rise buildings and large buildings in cities is increasing, electrical vertical shafts such as staircases, elevator rooms and pipe shafts in the high-rise buildings are easy to generate chimney effect once a fire breaks out, and the spreading speed of fire rapidly increases once the electrical vertical shafts generate the chimney effect in the fire, so that the electrical vertical shafts finally become a rapid passage for spreading the fire. Therefore, after the strong and weak electric lines in the cable shaft are deployed, fireproof plugging must be carried out and the fireproof standard must be met, so that the cable shaft is prevented from being a fire propagation channel, and the fire risk is reduced.
The patent document with application number 201821369137.4 discloses a cable shaft keeps apart shutoff fire resistive construction, and it includes the floor, including PLASTIC LAMINATED, fire prevention box and cable, the outside of floor is fixed with the PLASTIC LAMINATED, the inboard of floor is fixed with the fire prevention box, the cable passes fire prevention box, floor and PLASTIC LAMINATED, the gap department between cable and the fire prevention box and the gap department between cable and the PLASTIC LAMINATED all fill has the fire prevention shutoff material layer, all open the through wires hole that a plurality of power cables passed on PLASTIC LAMINATED, fire prevention box and the floor, the gap department between PLASTIC LAMINATED and the cable is filled has the fire prevention mud layer, the fire prevention box four corners is fixed with the fixed block, under the condition that high temperature and conflagration take place, can effectually keep apart the shutoff, and install S type aerosol automatic fire extinguishing device in the space after the shutoff is accomplished, simultaneously can completely cut off the stream of, thereby achieving the effect of fire prevention of the vertical shaft with strong and weak current. However, no corresponding detection instrument is available in the market at present for detecting whether the sealing performance of the fireproof plugging of the cable shaft reaches the standard.
Disclosure of Invention
The utility model aims at solving the technical problem that the fire prevention shutoff between the floor seals the effect in the detection cable shaft that prior art can not be fine.
In order to solve the technical problem, the utility model provides a following technical scheme:
the utility model provides a cable shaft fire prevention shutoff leakproofness detects analogue means, it includes the box that a plurality of stacked from top to bottom, and single box includes 1 at least lateral wall, top surface and the bottom surface that constitute by the metal level that constitute by transparent flame retardant coating, and the bottom surface of box is the bilayer structure, installs the groove of simulation light current circuit installation space and is used for simulating the pipeline of cable on the box.
A window is arranged on the transparent side wall A of the box body and used for putting a simulated firework device into the box body or replacing a fireproof blocking mode.
And a sealing strip is arranged at the edge of the window.
And grooves for simulating weak current line installation space and pipelines for simulating cables are arranged on the other side walls except the side wall A of the box body.
And fireproof plugging material placing areas are arranged at the groove of the simulated weak current line installation space and the outer side edge of the pipeline for simulating the cable.
An upper valve and a lower valve are respectively arranged at the upper end and the lower end of the pipeline for simulating the cable in the same box body.
One or a plurality of box bodies are provided with simulated smoke generators.
By adopting the technical scheme, the technical effects are as follows:
the utility model provides a pair of cable shaft fire prevention shutoff leakproofness detects analogue means, this analogue means is the miniature analogue means of a simulation actual cable shaft operating condition, can change fire prevention plugging material and shutoff mode very conveniently in this analogue means, can simulate actual firework with smog and flame generating device, can see analogue test's effect through transparent glass (simulation wall) to for designing actual fire prevention shutoff effect.
Drawings
The invention will be further explained with reference to the following figures and examples:
FIG. 1 and FIG. 2 are schematic structural views showing three cases stacked one on top of the other in the embodiment;
FIG. 3 is a cross-sectional view of the intermediate housing of FIG. 1;
fig. 4 is an internal structural view of fig. 1.
Detailed Description
The utility model provides a cable shaft fire prevention shutoff leakproofness detects analogue means, it includes the box that a plurality of stacked from top to bottom, and single box includes 1 at least lateral wall, top surface and the bottom surface that constitute by the metal level that constitute by transparent flame retardant coating, and the bottom surface of box is the bilayer structure, installs the groove 4 of simulation light current circuit installation space and is used for simulating the pipeline 5 of cable on the box.
A window 6 is arranged on the transparent side wall A of the box body and used for putting a simulated firework device into the box body or replacing a fireproof blocking mode.
And a sealing strip is arranged at the edge of the window 6.
And grooves 4 simulating installation space of weak current lines and pipelines 5 for simulating cables are arranged on other side walls except the side wall A of the box body.
And fireproof plugging material placing areas are arranged at the outer side edges of the groove 4 for simulating the weak current line installation space and the pipeline 5 for simulating the cable.
An upper valve and a lower valve are respectively arranged at the upper end and the lower end of the pipeline 5 for simulating the cable in the same box body.
A simulated smoke generator 8 is arranged in the middle box body, and can be selected from a simulated PM2.5 smoke simulated smoke generator with model number of YQW-90.
Example (b):
as shown in fig. 1 to 4, in this embodiment, the utility model discloses constitute by upper, middle, lower three box, a cable shaft fire prevention shutoff leakproofness detects analogue means, is formed by 3 sizes are 1m 0.8 m's box range upon range of, and one deck cable shaft in every box simulation actual building is called upper box, middle box and bottom box respectively according to stacking the position. The periphery of each box body is made of transparent fireproof glass, the bottom surface and the top surface of each box body are made of aluminum plate materials, the bottom surface of each box body is composed of two layers, the distance between the two layers is 10cm, and the periphery of each box body is wrapped by opaque aluminum plates and used for simulating the floor of a cable shaft.
Each box body in the simulation device has four side faces, and the structure is as follows:
1) the side face which is completely transparent and is convenient for observing the test effect is called as the front face;
2) a window of 40cm by 40cm is arranged opposite to the front side, a simulated smoke and fire device can be put into the box body or a fireproof blocking mode can be replaced, and sealing strips are arranged on the window, and the sealing can be ensured at the position of the small window door after the sealing strips are closed;
3) the surfaces of the left side and the right side of the front surface are respectively called as the left side surface and the right side surface, and a simulated weak current groove and a cable are respectively fixed on the upper surfaces.
The simulation device is characterized in that a simulation weak current circuit installation groove with the size of 15cm x 15cm is fixed in three boxes, the groove penetrates through the three boxes and is used for simulating installation grooves used for installing weak current circuits (such as telephone lines, network lines, cable television lines and the like) in an actual cable shaft, and a fireproof plugging material placement area with the width of 5cm is arranged outside the installation groove and can be used for placing different fireproof plugging materials so as to facilitate simulation tests.
Three black steel pipes with the diameter of 5cm are fixed on the right side surfaces of the three boxes in the simulation device, and the steel pipes penetrate through the three boxes and are used for simulating the power supply cable in the actual cable shaft. The outer surface of the three steel pipes is a groove with the length of 20cm by 10cm, and the groove is also used for placing fireproof plugging materials.
Two ends of the left steel pipe and the right steel pipe of the simulation cable arranged on the right side face of the simulation device are sealed. Two ends of the middle valve are respectively provided with a control valve, the control valves are called as an upper valve and a lower valve according to positions, and the opening degree of the valves can be adjusted. When the valve is closed, the plugging effect of the fireproof plugging material can be tested; when the valve is opened, the effect that the smoke can be transmitted from the middle layer to the upper layer and the lower layer under the condition of poor fireproof blocking effect can be conveniently simulated.
A simulated smoke generator is installed in the middle of a middle box body of the simulation device, and smoke can be released after the simulated smoke generator is opened to simulate dense smoke generated when an actual cable well catches fire.
The simulation device has three purposes: (1) testing the sealing effect when different fireproof sealing modes are adopted; (2) the flue gas transmission effect when the plugging effect is not good is displayed; (3) and (5) testing the use of the fireproof plugging detection instrument. The specific implementation mode is as follows:
(1) firstly, after a simulated weak current line mounting groove and an outer ring groove of a strong current cable (namely a fireproof plugging material placing area) are arranged in a certain fireproof plugging mode, starting a smoke generating device in a middle box body to produce simulated smoke, checking whether smoke leaks from an upper box body and a lower box body through transparent glass, and comparing the sealing effect when different fireproof plugging modes are adopted;
(2) after the fireproof plugging material placing area is arranged in a certain fireproof plugging mode, the smoke generating device in the middle box body is started to generate simulated smoke, the upper valve and the lower valve are opened, and the rapid propagation effect of smoke when the plugging effect is not good is displayed.
(3) After the fireproof plugging material placing area is arranged in a certain fireproof plugging mode, the upper valve and the lower valve are kept closed, the fireproof plugging tightness detector is respectively placed into the upper layer box body, the middle layer box body and the lower layer box body through the small window, the detector main body is placed in the middle layer box body, and the special gas concentration detectors are placed in the upper layer box body and the lower layer box body. The detector main body of the middle layer can release the special gas by a tester in a remote control mode, the gas release valve is automatically closed when the concentration of the special gas reaches a preset value through detection of the sensor, the special gas concentration detectors of the upper layer and the lower layer are used for detecting the concentration change of the special gas after the middle detection detector releases the special gas for a certain time, and then the tightness measurement value of the fireproof plugging is evaluated according to the change value and the detection standard.
Optionally, the special gas is carbon dioxide gas.
Claims (7)
1. The utility model provides a cable shaft fire prevention shutoff leakproofness detects analogue means which characterized in that: the box comprises a plurality of boxes which are stacked up and down, wherein each box comprises at least 1 side wall formed by transparent fireproof layers, a top surface formed by metal layers and a bottom surface, the bottom surface of each box is a double-layer structure, and a groove (4) for simulating a weak current circuit installation space and a pipeline (5) for simulating a cable are arranged on each box.
2. The cable shaft fireproof plugging sealing performance detection simulation device according to claim 1, wherein: a window (6) is arranged on the transparent side wall A of the box body and used for putting a simulated pyrotechnic device into the box body or replacing a fireproof blocking mode.
3. The cable shaft fireproof plugging sealing performance detection simulation device according to claim 2, wherein: and a sealing strip is arranged at the edge of the window (6).
4. The cable shaft fireproof plugging sealing performance detection simulation device according to claim 2, wherein: and grooves (4) simulating weak current line installation space and a pipeline (5) for simulating cables are arranged on the other side walls except the side wall A of the box body.
5. The cable shaft fireproof plugging sealing performance detection simulation device according to claim 4, wherein: and fireproof plugging material placing areas are arranged at the outer side edges of the groove (4) for simulating the weak current line installation space and the pipeline (5) for simulating the cable.
6. The cable shaft fireproof plugging sealing performance detection simulation device according to claim 4 or 5, wherein: an upper valve (7) and a lower valve are respectively arranged at the upper end and the lower end of a pipeline (5) used for simulating the cable in the same box body.
7. The cable shaft fireproof plugging sealing performance detection simulation device according to claim 1, 2, 3, 4 or 5, wherein: one or a plurality of box bodies are provided with a simulated smoke generator (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922269809.5U CN211013399U (en) | 2019-12-17 | 2019-12-17 | Cable shaft fire prevention shutoff leakproofness detects analogue means |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922269809.5U CN211013399U (en) | 2019-12-17 | 2019-12-17 | Cable shaft fire prevention shutoff leakproofness detects analogue means |
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| Publication Number | Publication Date |
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| CN211013399U true CN211013399U (en) | 2020-07-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201922269809.5U Expired - Fee Related CN211013399U (en) | 2019-12-17 | 2019-12-17 | Cable shaft fire prevention shutoff leakproofness detects analogue means |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112880932A (en) * | 2021-01-13 | 2021-06-01 | 三峡大学 | Method for detecting sealing performance of fireproof plugging of cable shaft at normal temperature |
-
2019
- 2019-12-17 CN CN201922269809.5U patent/CN211013399U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112880932A (en) * | 2021-01-13 | 2021-06-01 | 三峡大学 | Method for detecting sealing performance of fireproof plugging of cable shaft at normal temperature |
| CN112880932B (en) * | 2021-01-13 | 2022-03-08 | 三峡大学 | Method for detecting sealing performance of fireproof plugging of cable shaft at normal temperature |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200714 Termination date: 20201217 |
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| CF01 | Termination of patent right due to non-payment of annual fee |