Automatic water spraying and steam fire extinguishing system of drying machine

Abstract

The invention relates to the technical field of viscose fiber production, and discloses an automatic water spraying and steam fire extinguishing system for a dryer, which comprises a fire hose and a steam pipe, and a plurality of automatic temperature measuring devices for monitoring the operating temperature of each area of the dryer in real time are mounted on the fire hose; the steam pipe is connected with three branch steam pipes, each branch steam pipe is provided with two exhaust ports, steam in one exhaust port flows to the drying heater, and steam in the other exhaust port of each branch steam pipe flows to the drying area A, the drying area B and the drying area C. Through the design of the fire-fighting water pipe, the steam pipe and the dynamic temperature measuring equipment, the response speed of the fire extinguishing system can be greatly improved through field adjustment (measurement) and the automatic water spraying / steam fire extinguishing system of the dryer, the expected fire extinguishing control effect can be basically achieved, the fire behavior can be found and extinguished in time, and the fire behavior loss is reduced to the minimum; and a favorable guarantee is provided for safe and stable operation of drying.

Description

Technical Field

[0001] The invention relates to the technical field of viscose fiber production, in particular to a drying process of viscose fibers, and specifically to an automatic water spraying and steam fire extinguishing system for a drying machine. Background Art

[0002] During the production process of viscose fiber, it is desulfurized, bleached, and oiled before being dried by a high-pressure roller to make the moisture content of the fiber reach about 110%, and then it is fed into the dryer after wet opening; the fiber undergoes wet heat exchange in the dryer (hot air flows from back to front, the fiber moves from front to back in the reverse direction, and the humid gas is discharged at the front of the dryer) and meets the moisture content requirement specified by the dryer.

[0003] When viscose fibers are drying, they are prone to fires in the dryer and on the flat and inclined curtains due to reasons such as hair accumulation, mechanical friction, and electrical ignition. Therefore, we need to propose an automatic water spray and steam fire extinguishing system for the dryer to detect and extinguish fires in time and minimize the fire losses. Summary of the invention

[0004] The purpose of the present invention is to provide an automatic water spray and steam fire extinguishing system for a dryer. Through the design of fire water pipes, steam pipes, and dynamic temperature measuring equipment, and after on-site adjustment (testing), the automatic water spray / steam fire extinguishing system for the dryer can greatly improve the response speed of the fire extinguishing system, basically achieve the expected fire extinguishing control effect, timely discover and extinguish fires and reduce fire losses to a minimum, providing favorable guarantees for the safe and stable operation of drying, so as to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions: an automatic water spray and steam fire extinguishing system for a dryer, comprising a fire water pipe and a steam pipe located above the dryer, wherein the fire water pipe is equipped with a plurality of automatic temperature measuring devices for real-time monitoring of the operating temperature of each area of ​​the dryer;

[0006] One end of the fire-fighting water pipe is connected to branch water pipe 1, branch water pipe 2, branch water pipe 3, and branch water pipe 4 respectively;

[0007] The filtered water in the branch water pipe 1 flows to the inclined curtain and the fire hydrant through the outlet of area A, the filtered water in the branch water pipe 2 flows to the inclined curtain and the fire hydrant through the outlet of area B, and the filtered water in the branch water pipes 3 and 4 flows to the drying outlet through the outlet of area C;

[0008] The steam pipe is connected to three branch steam pipes, each of which is provided with two exhaust ports. The steam in one of the exhaust ports flows to the drying heater, and the steam in the other exhaust ports of the three branch steam pipes flows to drying area A, drying area B, and drying area C respectively.

[0009] Preferably, the diameters of the branch water pipes one and two are set to 65 mm, and the diameters of the branch water pipes three and four are set to 50 mm.

[0010] Preferably, the outlet of zone A includes drain pipe one, drain pipe two, drain pipe three, and drain pipe four connected to branch water pipe one, the filtered water in drain pipe one leads to the A line inclined curtain, the filtered water in drain pipe two leads to the A line fire hydrant, the filtered water in drain pipe three leads to the B line fire hydrant, and the filtered water in drain pipe two leads to the B line inclined curtain.

[0011] Preferably, the outlet of zone B includes drain pipe five, drain pipe six, drain pipe seven, and drain pipe eight connected to branch water pipe two, the filtered water in drain pipe five leads to the A line inclined curtain, the filtered water in drain pipe six leads to the A line fire hydrant, the filtered water in drain pipe seven leads to the B line fire hydrant, and the filtered water in drain pipe eight leads to the B line inclined curtain.

[0012] Preferably, the outlet of zone C includes drain pipe nine connected to branch water pipe three and drain pipe ten connected to branch water pipe four, the filtered water in drain pipe nine leads to the drying outlet of line A, and the filtered water in drain pipe ten leads to the drying outlet of line B.

[0013] Preferably, the steam pipe includes a line A steam pipeline and a line B steam pipeline, and the three branch steam pipes in the line A steam pipeline are branch steam pipe one, branch steam pipe two, and branch steam pipe three, respectively. One end of the branch steam pipe one is connected to exhaust pipe one and exhaust pipe two, respectively, one end of the branch steam pipe two is connected to exhaust pipe three and exhaust pipe four, respectively, and one end of the branch steam pipe three is connected to exhaust pipe five and exhaust pipe six, respectively.

[0014] Preferably, the steam in the exhaust pipe one, exhaust pipe three, and exhaust pipe five all lead to the drying heater, the steam in the exhaust pipe two leads to the drying area A, the steam in the exhaust pipe four leads to the drying area B, and the steam in the exhaust pipe six leads to the drying area C.

[0015] Preferably, the three branch steam pipes in the B line steam pipeline are branch steam pipe four, branch steam pipe five, and branch steam pipe six, respectively; one end of the branch steam pipe four is connected to exhaust pipe seven and exhaust pipe eight, respectively; one end of the branch steam pipe five is connected to exhaust pipe nine and exhaust pipe ten, respectively; one end of the branch steam pipe six is ​​connected to exhaust pipe eleven and exhaust pipe twelve, respectively.

[0016] Preferably, the steam in the exhaust pipe seven, exhaust pipe nine and exhaust pipe eleven all lead to the drying heater, the steam in the exhaust pipe eight leads to the drying area A, the steam in the exhaust pipe ten leads to the drying area B, and the steam in the exhaust pipe twelve leads to the drying area C.

[0017] Preferably, the fire water pipe is equipped with an emergency standby filtered water fire extinguishing valve, and the steam pipe is equipped with an emergency standby steam fire extinguishing valve.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] Through the design of fire water pipes, steam pipes and dynamic temperature measuring equipment, and after on-site adjustment (testing), the automatic water spray / steam fire extinguishing system of the dryer can greatly improve the response speed of the fire extinguishing system, basically achieve the expected fire extinguishing control effect, timely discover and extinguish the fire and reduce the fire loss to a minimum, providing favorable guarantee for the safe and stable operation of the drying machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of the present invention;

[0021] Figure 2 It is a schematic diagram of the filtered water fire extinguishing pipeline and the steam fire extinguishing pipeline of the present invention. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] See also Figure 1-2 The present invention provides a technical solution: an automatic water spray and steam fire extinguishing system for a dryer, comprising a fire water pipe and a steam pipe located above the dryer, wherein a plurality of automatic temperature measuring devices for real-time monitoring of the operating temperature of each area of ​​the dryer are installed on the fire water pipe; optionally, the automatic temperature measuring device uses a thermal imager, and each thermal imager is located above each area of ​​the dryer.

[0024] One end of the fire-fighting water pipe is connected to branch water pipe 1, branch water pipe 2, branch water pipe 3, and branch water pipe 4 respectively;

[0025] The pipe diameters of the branch water pipes one and two are set to 65 mm, and the pipe diameters of the branch water pipes three and four are set to 50 mm.

[0026] The filtered water in the branch water pipe one flows to the inclined curtain and the fire hydrant through the outlet of area A, the filtered water in the branch water pipe two flows to the inclined curtain and the fire hydrant through the outlet of area B, and the filtered water in the branch water pipes three and four flows to the drying outlet through the outlet of area C; when the automatic temperature measuring equipment in each area of ​​the dryer detects that the temperature of any three measuring points reaches 160°C at the same time, water spraying for fire extinguishing will be automatically started.

[0027] The steam pipe is connected to three branch steam pipes, each of which is provided with two exhaust ports, the steam in one of the exhaust ports flows to the drying heater, and the steam in the other exhaust ports of the three branch steam pipes flows to drying area A, drying area B, and drying area C respectively. When the automatic temperature measuring equipment in each area of ​​the dryer detects that the temperature of any three measuring points reaches 160°C at the same time, steam fire extinguishing will be automatically started.

[0028] And when the automatic temperature measuring equipment in each area of ​​the dryer detects that the temperature of any three measuring points reaches 160℃ at the same time, all dryers will automatically interlock and stop running, and the fine cotton feeding fan will automatically interlock and stop operating.

[0029] The outlet of area A includes drain pipe 1, drain pipe 2, drain pipe 3 and drain pipe 4 connected to branch water pipe 1. The filtered water in drain pipe 1 leads to the A line inclined curtain, the filtered water in drain pipe 2 leads to the A line fire hydrant, the filtered water in drain pipe 3 leads to the B line fire hydrant, and the filtered water in drain pipe 2 leads to the B line inclined curtain.

[0030] The outlet of zone B includes drain pipe five, drain pipe six, drain pipe seven, and drain pipe eight connected to branch water pipe two. The filtered water in drain pipe five leads to the A line inclined curtain, the filtered water in drain pipe six leads to the A line fire hydrant, the filtered water in drain pipe seven leads to the B line fire hydrant, and the filtered water in drain pipe eight leads to the B line inclined curtain.

[0031] The outlet of zone C includes drain pipe nine connected to branch water pipe three and drain pipe ten connected to branch water pipe four. The filtered water in drain pipe nine leads to the drying outlet of line A, and the filtered water in drain pipe ten leads to the drying outlet of line B.

[0032] Specifically, drain pipe 1, drain pipe 4, drain pipe 5, drain pipe 8, drain pipe 9 and drain pipe 10 are all equipped with an inclined curtain control valve, two manual valves at both ends of the inclined curtain control valve, and a bypass valve connected in parallel to the control valve and the two manual valves;

[0033] Specifically, fire hydrant control valves are installed on drain pipe 2, drain pipe 3, drain pipe 6, and drain pipe 7.

[0034] During on-site installation, if there are dead corners in the steam pipe, consider installing a drain pipe.

[0035] The steam pipe includes a line A steam pipeline and a line B steam pipeline. The three branch steam pipes in the line A steam pipeline are branch steam pipe one, branch steam pipe two, and branch steam pipe three. One end of the branch steam pipe one is connected to exhaust pipe one and exhaust pipe two, respectively. One end of the branch steam pipe two is connected to exhaust pipe three and exhaust pipe four, respectively. One end of the branch steam pipe three is connected to exhaust pipe five and exhaust pipe six, respectively.

[0036] The steam in the exhaust pipe 1, the exhaust pipe 3 and the exhaust pipe 5 all lead to the drying heater, the steam in the exhaust pipe 2 leads to the drying area A, the steam in the exhaust pipe 4 leads to the drying area B, and the steam in the exhaust pipe 6 leads to the drying area C.

[0037] The diameters of exhaust pipe 1, exhaust pipe 2, exhaust pipe 3, exhaust pipe 4, exhaust pipe 5 and exhaust pipe 6 are all 50mm.

[0038] The three branch steam pipes in the B line steam pipeline are branch steam pipe four, branch steam pipe five, and branch steam pipe six, respectively. One end of the branch steam pipe four is connected to exhaust pipe seven and exhaust pipe eight, respectively. One end of the branch steam pipe five is connected to exhaust pipe nine and exhaust pipe ten, respectively. One end of the branch steam pipe six is ​​connected to exhaust pipe eleven and exhaust pipe twelve, respectively.

[0039] The steam in the exhaust pipe seven, exhaust pipe nine and exhaust pipe eleven all lead to the drying heater, the steam in the exhaust pipe eight leads to the drying area A, the steam in the exhaust pipe ten leads to the drying area B, and the steam in the exhaust pipe twelve leads to the drying area C.

[0040] The diameters of exhaust pipe seven, exhaust pipe eight, exhaust pipe nine, exhaust pipe ten, exhaust pipe eleven and exhaust pipe twelve are all 50mm.

[0041] Specifically, exhaust pipe 2, exhaust pipe 4, exhaust pipe 6, exhaust pipe 8, exhaust pipe 10 and exhaust pipe 12 are also installed with a control valve, two manual valves at both ends of the control valve, and a bypass valve connected in parallel to the control valve and the two manual valves.

[0042] The fire water pipe is equipped with an emergency standby filtered water fire extinguishing valve, and the steam pipe is equipped with an emergency standby steam fire extinguishing valve.

[0043] It is worth mentioning that emergency opening buttons are installed on site in each area of ​​the dryer to prevent the PLC valve from failing to open. These buttons can be used to control the opening of the emergency steam valve (steam fire extinguishing valve) and emergency inclined curtain fire water valve (filtered water fire extinguishing valve) in each area.

[0044] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An automatic water spray and steam fire extinguishing system for a dryer, characterized in that: It includes a fire water pipe and a steam pipe located above the dryer, and the fire water pipe is equipped with a plurality of automatic temperature measuring devices for real-time monitoring of the operating temperature of each area of ​​the dryer; One end of the fire-fighting water pipe is connected to branch water pipe 1, branch water pipe 2, branch water pipe 3, and branch water pipe 4 respectively; The filtered water in the branch water pipe 1 flows to the inclined curtain and the fire hydrant through the outlet of area A, the filtered water in the branch water pipe 2 flows to the inclined curtain and the fire hydrant through the outlet of area B, and the filtered water in the branch water pipes 3 and 4 flows to the drying outlet through the outlet of area C; The steam pipe is connected to three branch steam pipes, each of which is provided with two exhaust ports. The steam in one of the exhaust ports flows to the drying heater, and the steam in the other exhaust ports of the three branch steam pipes flows to drying area A, drying area B, and drying area C respectively.

2. The automatic water spray and steam fire extinguishing system for a dryer according to claim 1, characterized in that: The pipe diameters of the branch water pipes one and two are set to 65 mm, and the pipe diameters of the branch water pipes three and four are set to 50 mm.

3. The automatic water spray and steam fire extinguishing system for a dryer according to claim 1, characterized in that: The outlet of area A includes drain pipe 1, drain pipe 2, drain pipe 3 and drain pipe 4 connected to branch water pipe 1. The filtered water in drain pipe 1 leads to the A line inclined curtain, the filtered water in drain pipe 2 leads to the A line fire hydrant, the filtered water in drain pipe 3 leads to the B line fire hydrant, and the filtered water in drain pipe 2 leads to the B line inclined curtain.

4. The automatic water spray and steam fire extinguishing system for a dryer according to claim 1, characterized in that: The outlet of zone B includes drain pipe five, drain pipe six, drain pipe seven, and drain pipe eight connected to branch water pipe two. The filtered water in drain pipe five leads to the A line inclined curtain, the filtered water in drain pipe six leads to the A line fire hydrant, the filtered water in drain pipe seven leads to the B line fire hydrant, and the filtered water in drain pipe eight leads to the B line inclined curtain.

5. The automatic water spray and steam fire extinguishing system for a dryer according to claim 1, characterized in that: The outlet of zone C includes drain pipe nine connected to branch water pipe three and drain pipe ten connected to branch water pipe four. The filtered water in drain pipe nine leads to the drying outlet of line A, and the filtered water in drain pipe ten leads to the drying outlet of line B.

6. The automatic water spray and steam fire extinguishing system for a dryer according to claim 1, characterized in that: The steam pipe includes a line A steam pipeline and a line B steam pipeline. The three branch steam pipes in the line A steam pipeline are branch steam pipe one, branch steam pipe two, and branch steam pipe three. One end of the branch steam pipe one is connected to exhaust pipe one and exhaust pipe two, respectively. One end of the branch steam pipe two is connected to exhaust pipe three and exhaust pipe four, respectively. One end of the branch steam pipe three is connected to exhaust pipe five and exhaust pipe six, respectively.

7. The automatic water spray and steam fire extinguishing system for a dryer according to claim 6, characterized in that: The steam in the exhaust pipe 1, the exhaust pipe 3 and the exhaust pipe 5 all lead to the drying heater, the steam in the exhaust pipe 2 leads to the drying area A, the steam in the exhaust pipe 4 leads to the drying area B, and the steam in the exhaust pipe 6 leads to the drying area C.

8. The automatic water spray and steam fire extinguishing system for a dryer according to claim 7, characterized in that: The three branch steam pipes in the B line steam pipeline are branch steam pipe four, branch steam pipe five, and branch steam pipe six, respectively. One end of the branch steam pipe four is connected to exhaust pipe seven and exhaust pipe eight, respectively. One end of the branch steam pipe five is connected to exhaust pipe nine and exhaust pipe ten, respectively. One end of the branch steam pipe six is ​​connected to exhaust pipe eleven and exhaust pipe twelve, respectively.

9. The automatic water spray and steam fire extinguishing system for a dryer according to claim 8, characterized in that: The steam in the exhaust pipe seven, exhaust pipe nine and exhaust pipe eleven all lead to the drying heater, the steam in the exhaust pipe eight leads to the drying area A, the steam in the exhaust pipe ten leads to the drying area B, and the steam in the exhaust pipe twelve leads to the drying area C.

10. The automatic water spray and steam fire extinguishing system for a dryer according to claim 1, characterized in that: The fire water pipe is equipped with an emergency standby filtered water fire extinguishing valve, and the steam pipe is equipped with an emergency standby steam fire extinguishing valve.

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