CN210511763U - Cooling air source system is examined to fire - Google Patents
Cooling air source system is examined to fire Download PDFInfo
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- CN210511763U CN210511763U CN201920572577.8U CN201920572577U CN210511763U CN 210511763 U CN210511763 U CN 210511763U CN 201920572577 U CN201920572577 U CN 201920572577U CN 210511763 U CN210511763 U CN 210511763U
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- 238000001816 cooling Methods 0.000 title claims abstract description 127
- 238000001514 detection method Methods 0.000 claims abstract description 93
- 239000003245 coal Substances 0.000 claims abstract description 5
- 238000009530 blood pressure measurement Methods 0.000 claims description 6
- 230000005611 electricity Effects 0.000 claims description 6
- 230000005540 biological transmission Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000013589 supplement Substances 0.000 description 2
- 230000009469 supplementation Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000013307 optical fiber Substances 0.000 description 1
- 238000010926 purge Methods 0.000 description 1
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Abstract
The utility model provides a cooling wind regime system is examined to fire. This fire detection cooling wind source system includes: the female pipe of primary air cooling, first gas-supply pipe and second gas-supply pipe, the female pipe of primary air cooling is used for intercommunication fan and coal pulverizer, the first end of first gas-supply pipe is connected with the female pipe of primary air cooling, the second end of first gas-supply pipe is connected with fire detection device, in order to examine detection device through fan to fire and provide the wind pressure, the first end of second gas-supply pipe is examined the cooling blower with the fire and is connected, the second end of second gas-supply pipe is linked together with the second end of first gas-supply pipe, in order to examine the cooling blower through the fire and examine detection device and provide supplementary wind pressure. The first end of the first gas pipe is communicated with the primary air cooling main pipe, the second end of the first gas pipe is connected with the fire detection device, so that wind pressure is provided for the fire detection device through the primary fan, and the fire detection cooling fan is used for providing supplementary wind pressure for the fire detection device through the second gas pipe so as to improve the stability of the operation of the fire detection system.
Description
Technical Field
The utility model relates to a thermal power factory technical field particularly, relates to a cooling wind regime system is examined to fire.
Background
In the prior art, the boiler fire detection cooling air source is two fire detection cooling fans, the starting logic of the two fire detection fans in the thermal engineering logic design is that one fire detection cooling fan operates, and when the pressure of a fire detection cooling air main pipe communicated with the fire detection cooling fans is low, the standby fire detection cooling fans are started in a combined mode.
However, after the tripping fan stops when the fire detection cooling fan fails, the fire detection cooling fan for standby is started in a linked mode, the pressure of fire detection cooling air is low, the air pressure required for cooling and purging the fire detection cannot be met, the fire detection lens and the optical fiber are easily burnt out due to high temperature, and the running stability of a fire detection system is affected.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a main aim at provides a cooling air supply system is examined to fire to the unstable problem of the operation of system is examined to fire among the solution prior art.
In order to achieve the above object, according to an aspect of the present invention, there is provided a fire detection cooling air source system, including: the primary air-cooled main pipe is used for communicating the primary fan and the coal mill; the first end of the first gas pipe is connected with the primary air cooling main pipe, and the second end of the first gas pipe is connected with the fire detection device so as to provide wind pressure for the fire detection device through the primary fan; and the first end of the second gas pipe is connected with the fire detection cooling fan, and the second end of the second gas pipe is communicated with the second end of the first gas pipe so as to provide supplementary wind pressure for the fire detection device through the fire detection cooling fan.
Further, fire detection cooling wind source system still includes: the pressure measuring part is arranged at the second end of the first gas transmission pipe and is electrically connected with the fire detection cooling fan to detect whether the air pressure in the first gas transmission pipe is lower than the preset air pressure or not, and when the air pressure is lower than the preset air pressure, the pressure measuring part starts the fire detection cooling fan to enable the second gas transmission pipe to generate supplementary air pressure.
Further, the cooling blower is examined to the fire is a plurality of, and a plurality of cooling blowers are examined to the fire all is linked together with the first end of second gas-supply pipe, and a plurality of cooling blowers are examined to the fire all are connected with pressure measurement portion electricity.
Further, a plurality of fire detection cooling fans include first cooling fan and second cooling fan, and first cooling fan and second cooling fan all are linked together with the first end of second gas-supply pipe, and the pressure measuring portion is connected with first cooling fan and second cooling fan electricity respectively to start first cooling fan or second cooling fan through the detection portion.
Further, a first check valve is arranged on the first air conveying pipe.
Further, a second check valve is arranged on the second air conveying pipe.
Furthermore, a first pneumatic valve is arranged on the first gas conveying pipe and electrically connected with the detection part.
Further, a second pneumatic valve is arranged on the second air conveying pipe and electrically connected with the detection part.
Further, the preset air pressure comprises a first air pressure a and a second air pressure b, wherein b is less than a; the pressure measuring part detects that the air pressure in the first air conveying pipe is c, when b is larger than c and smaller than a, the detecting part selectively starts the first cooling fan or the second cooling fan, when c is smaller than b, the detecting part closes the first pneumatic valve through an electric signal, and the detecting part starts the first cooling fan and the second cooling fan through the electric signal.
Further, a is 5kPa, and b is 4 kPa.
Use the technical scheme of the utility model, be linked together through the first end with first gas-supply pipe and a female pipe of forced air cooling, examine detection device with the second end of first gas-supply pipe and the fire and be connected to examine detection device through a fan to the fire and provide the wind pressure, and utilize the fire to examine cooling blower and examine detection device through the second gas-supply pipe for the fire and provide the stability of supplementary wind pressure in order to improve the fire and examine system operation.
Drawings
The accompanying drawings, which form a part of the present application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:
fig. 1 shows a schematic structural diagram of an embodiment of a fire detection cooling air source system according to the present invention.
Wherein the figures include the following reference numerals:
1. primary air cooling of the main pipe; 2. a primary air fan; 3. a coal mill; 4. a first gas delivery pipe; 5. a second gas delivery pipe; 6. a fire detection cooling fan; 7. a first check valve; 8. a second check valve; 9. a first pneumatic valve; 10. a second pneumatic valve; 11. fire detection device.
Detailed Description
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
Specifically, as shown in fig. 1, the fire detection cooling air source system includes: female pipe of primary air cooling 1, first gas-supply pipe 4 and second gas-supply pipe 5, female pipe 1 of primary air cooling is used for intercommunication primary air fan 2 and coal pulverizer 3, the first end of first gas-supply pipe 4 is connected with female pipe 1 of primary air cooling, the second end of first gas-supply pipe 4 is connected with fire detection device 11, in order to examine detection device 11 through primary air fan 2 to fire and provide the wind pressure, the first end of second gas-supply pipe 5 is examined cooling blower 6 with the fire and is connected, the second end of second gas-supply pipe 5 is linked together with the second end of first gas-supply pipe 4, in order to examine cooling blower 6 through the fire and examine detection device 11 and provide supplementary wind pressure.
In this embodiment, be linked together through the first end with first gas-supply pipe and a female pipe of forced air cooling, examine detection device with the fire with the second end of first gas-supply pipe and be connected to examine detection device with the fire, examine detection device with the fire through the fan that once provides the wind pressure, and utilize the fire to examine cooling blower and examine detection device through the second gas-supply pipe for the fire and provide the stability of supplementary wind pressure in order to improve the operation of fire detection system.
Further, fire detection cooling wind source system still includes: survey splenium, pressure measurement portion set up in the second end of first gas-supply pipe 4, survey splenium and fire and examine cooling fan 6 electricity and be connected to whether atmospheric pressure in detecting first gas-supply pipe 4 is less than preset atmospheric pressure, when atmospheric pressure is less than preset atmospheric pressure, pressure measurement portion starts fire and examines cooling fan 6 so that produce in the second gas-supply pipe 5 and supply the wind pressure. Survey the splenium and be atmospheric pressure sensor, survey the splenium and can detect whether atmospheric pressure in the first gas-supply pipe 4 satisfies and provide sufficient wind pressure to fire detection device 11 through setting up, when the unsatisfied needs that fire detection device 11 was examined to atmospheric pressure, fire detects cooling blower 6 so that produce in the second gas-supply pipe 5 and supply the wind pressure.
In this embodiment, the cooling fan 6 is examined to the fire is a plurality of, and a plurality of cooling fans 6 are examined to the fire all is linked together with the first end of second gas-supply pipe 5, and a plurality of cooling fans 6 are examined to the fire all is connected with pressure measurement portion electricity. Through setting up a plurality of fires and examining cooling blower 6, improved and examined 11 air supplementation volume of detection device to the fire, and can select one or several in a plurality of fires examine cooling blower 6 to examine detection device 11 to the fire and carry out the air supplementation operation as required.
Wherein, a plurality of fire detection cooling blower 6 include first cooling blower and second cooling blower, and first cooling blower and second cooling blower all are linked together with the first end of second gas-supply pipe 5, and the pressure measurement portion is connected with first cooling blower and second cooling blower electricity respectively to start first cooling blower or second cooling blower through the detection portion. When the detection part detects that the air pressure conducted by the primary air-cooling main pipe 1 does not meet the requirement of the fire detection device 11, the detection part starts the first cooling fan or the second cooling fan to supplement air to the fire detection device 11, and of course, the detection part can also start the first cooling fan and the second cooling fan to supplement air to the fire detection device 11.
As shown in fig. 1, the first gas line 4 is provided with a first check valve 7. The air flow in the primary air-cooling main pipe 1 can be conveyed to the fire detection device 11 only in a one-way mode through the arrangement of the first check valve 7, backflow is prevented, and the stability of the system is improved.
Further, a second check valve 8 is arranged on the second air delivery pipe 5. The arrangement enables the airflow generated by the fire detection cooling fan 6 to be guided to the fire detection device 11 in a single direction only, and the airflow does not flow back, so that the stability of the system is improved.
In this embodiment, the first air pipe 4 is provided with a first pneumatic valve 9, and the first pneumatic valve 9 is electrically connected with the detection portion. By arranging the first pneumatic valve 9, when the airflow in the primary air cooling main pipe 1 is difficult to provide enough airflow for the fire detection device 11 through the first air conveying pipe 4, the first pneumatic valve 9 can be closed, and enough fire detection cooling fans 6 are opened to provide stable supplementary air pressure for the fire detection device 11.
In addition, a second air-operated valve 10 is provided on the second air pipe 5, and the second air-operated valve 10 is electrically connected to the detection portion. The arrangement is convenient for the second check valve 8 to be closed by the detection part when the airflow in the primary air-cooling main pipe 1 provides enough airflow to the fire detection device 11 through the first air delivery pipe 4.
In this embodiment, the preset air pressure includes a first air pressure a and a second air pressure b, where b < a; the pressure measuring part detects that the air pressure in the first air conveying pipe (4) is c, when b is smaller than c and smaller than a, the detecting part selectively starts the first cooling fan or the second cooling fan, when c is smaller than b, the detecting part closes the first pneumatic valve 9 through an electric signal, and the detecting part starts the first cooling fan and the second cooling fan through the electric signal. Wherein, a is 5kPa, and b is 4 kPa. The setting has ensured the fire and has examined cooling wind pressure and reach the cooling wind pressure requirement like this, ensures the operation of fire detection system stability.
The method aims to guarantee the stable operation of the fire detection system; a hole is formed in a primary air cooling main pipe 1 at the outlet of a primary air fan 2, a 219mm pipeline, namely a first air conveying pipe 4, is used for inducing a wind source to a 12.6-meter fire detection cooling air main pipe, namely a second air conveying pipe 5, a DN200 manual gate valve, namely a second pneumatic valve 10, and a DN200 check valve, namely a second check valve 8 are additionally arranged, a DN200 check valve, namely a first check valve 7, is arranged in front of a pressure measuring point of the fire detection cooling air main pipe, namely the second air conveying pipe 5, and wind cross at two sides is prevented.
The logic of the present application is changed to: when the pressure measuring part detects that the pressure of the second end of the first air conveying pipe 4 is low, namely c is more than or equal to 4kPa and less than or equal to 5kPa, or any one primary air fan stops or is extinguished, the pulse 5s jointly starts the first cooling fan, and the second air conveying pipe 10 is parallelly connected; delaying for 5s, and starting a second cooling fan in a linked manner when the operation signal of the first cooling fan is not returned; when the pressure measuring part detects that the pressure of the second end of the first air delivery pipe 4 is low, namely c is less than or equal to 4kPa, the pulse 5s is used for starting the residual fans which are not started in a linkage manner, the newly added cold primary air outlet is closed in parallel to the pneumatic valve on the pipeline of the fire detection cooling fan, namely, the first pneumatic valve 9 is closed, and the cold primary air is isolated.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. A fire detection cooling air supply system, comprising:
the primary air-cooling main pipe (1), wherein the primary air-cooling main pipe (1) is used for communicating a primary fan (2) with a coal mill (3);
the first end of the first air conveying pipe (4) is connected with the primary air cooling main pipe (1), and the second end of the first air conveying pipe (4) is connected with a fire detection device (11) so as to provide air pressure for the fire detection device (11) through a primary air fan (2);
second gas-supply pipe (5), the first end of second gas-supply pipe (5) is examined with the fire and is examined cooling blower (6) and be connected, the second end of second gas-supply pipe (5) with the second end of first gas-supply pipe (4) is linked together, with pass through the fire is examined cooling blower (6) and is right the fire is examined detection device (11) and is provided supplementary wind pressure.
2. The fire detection cooling wind source system according to claim 1, further comprising:
survey splenium, pressure measurement portion set up in the second end of first gas-supply pipe (4), survey splenium with fire is examined cooling blower (6) electricity and is connected, in order to detect whether atmospheric pressure in first gas-supply pipe (4) is less than preset atmospheric pressure, works as when atmospheric pressure is less than preset atmospheric pressure, survey splenium and start fire is examined cooling blower (6) so that produce in second gas-supply pipe (5) and supply the wind pressure.
3. The fire detection cooling air source system according to claim 2, wherein the number of the fire detection cooling fans (6) is plural, the plurality of fire detection cooling fans (6) are all communicated with the first end of the second air delivery pipe (5), and the plurality of fire detection cooling fans (6) are all electrically connected with the pressure measuring part.
4. The fire detection cooling air source system according to claim 2, wherein the fire detection cooling fans (6) comprise a first cooling fan and a second cooling fan, the first cooling fan and the second cooling fan are both communicated with the first end of the second air conveying pipe (5), and the pressure measuring part is electrically connected with the first cooling fan and the second cooling fan respectively so as to start the first cooling fan or the second cooling fan through the pressure measuring part.
5. The fire detection cooling air supply system according to claim 1, wherein a first check valve (7) is arranged on the first air conveying pipe (4).
6. The fire detection cooling air supply system according to claim 1, wherein a second check valve (8) is arranged on the second air conveying pipe (5).
7. The fire detection cooling air source system according to claim 4, wherein a first pneumatic valve (9) is arranged on the first air conveying pipe (4), and the first pneumatic valve (9) is electrically connected with the pressure measuring part.
8. The fire detection cooling air source system according to claim 2, wherein a second pneumatic valve (10) is arranged on the second air pipe (5), and the second pneumatic valve (10) is electrically connected with the pressure measuring part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920572577.8U CN210511763U (en) | 2019-04-24 | 2019-04-24 | Cooling air source system is examined to fire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920572577.8U CN210511763U (en) | 2019-04-24 | 2019-04-24 | Cooling air source system is examined to fire |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210511763U true CN210511763U (en) | 2020-05-12 |
Family
ID=70542163
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920572577.8U Active CN210511763U (en) | 2019-04-24 | 2019-04-24 | Cooling air source system is examined to fire |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210511763U (en) |
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2019
- 2019-04-24 CN CN201920572577.8U patent/CN210511763U/en active Active
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