Flame detection mounting sleeve and flame detection device
By designing the fire inspection installation sleeve, compressed air spraying to clean the fire inspection probe lens and forming an air curtain, the problem of inconvenient cleaning of the fire inspection probe lens is solved, and automated cleaning and stable flame monitoring are achieved.
Patent Information
- Application Number
- CN202421249561.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-03
- Publication Date
- 2025-03-18
- Estimated Expiration
- 2034-06-03
AI Technical Summary
The cleaning of the fire detection probe lens is inconvenient for maintenance, resulting in interruption of flame monitoring signals and misjudgment of operation personnel.
A fire inspection mounting sleeve is designed, including a pipe body, nozzle and interlayer cavity, to clean the lenses by spraying compressed air, and to form an air curtain to prevent contamination.
The automatic cleaning of the fire detection probe lens is realized, which avoids the need for manual intervention, ensures the stability and accuracy of the flame monitoring signal, and reduces operational misjudgment by the operator.
Smart Images
Figure CN222634614U_ABST
Abstract
Description
Technical Field
[0001] The present disclosure relates to the field of fire detection technology, and in particular to a fire detection installation sleeve and a fire detection device. Background Art
[0002] The furnace flame is focused by the fire detection probe, and then introduced into the fire detection probe board through optical fiber, and the flame intensity signal is generated by calculation. During the operation of the flame probe, dust often accumulates on the lens to block the boiler flame, resulting in the fire detection system failing to detect the flame signal, affecting the boiler operator to misjudge the use of oil guns to assist combustion, resulting in a large amount of fuel waste. When three-quarters of the fire detection signals are falsely reported as no fire, the entire furnace fire will be extinguished by mistake, triggering the MFT boiler trip.
[0003] In order to clean the dust on the lens of the fire detector, it is usually necessary to manually pull out the fire detector and clean the lens manually, which has the disadvantages of long waiting time, long fault recovery time, and manual operation. After the fault is found, the maintenance personnel are notified, and the maintenance personnel rush to the scene. The maintenance personnel remove the wires on site, pull out the fire detector, clean the fire detection lens, and restore the on-site equipment, which takes time and manpower, is time-consuming and labor-intensive, and the system loses monitoring for a long time. Utility Model Content
[0004] The purpose of the present disclosure is to provide a fire detection installation sleeve and a fire detection device to solve the technical problem that it is inconvenient to clean and maintain the lens of the fire detection probe.
[0005] In order to achieve the above-mentioned purpose, the present disclosure provides a fire detection installation sleeve, comprising: a tube body, which is used to be sleeved on the outside of the fire detection optical fiber, so that the fire detection probe at the front end of the fire detection optical fiber is accommodated in the inner cavity of the tube body, the front end of the tube body can be extended into the boiler and is provided with an opening, so that the fire detection probe monitors the flame through the opening, an interlayer cavity is formed between the inner wall and the outer wall of the tube body, a first interface, which is arranged on the outer wall and is connected to the interlayer cavity fluid to introduce compressed air into the interlayer cavity, and a nozzle, which is arranged on the inner wall at a position corresponding to the front side of the fire detection probe, and the nozzle is connected to the interlayer cavity fluid to spray compressed air toward the lens of the fire detection probe.
[0006] Optionally, a plurality of the nozzles are provided on the inner wall, and the plurality of the nozzles are arranged in an array around the central axis of the tube body.
[0007] Optionally, the nozzle extends obliquely from the inner wall toward the rear end of the tube body.
[0008] Optionally, the radial angle between the nozzle and the tube body is 50° to 70°.
[0009] Optionally, a second interface is further provided on the outer wall, and the second interface is connected to the inner cavity fluid to allow cooling air to flow into the inner cavity.
[0010] Optionally, the second interface is arranged at a position of the tube body corresponding to the outer peripheral surface of the fire detection optical fiber.
[0011] Optionally, a first flange is provided at the rear end of the tube body, and the tube body is fixedly connected to the fire detection optical fiber via the first flange.
[0012] Optionally, the tube body is made of double-layer steel pipe, the inner steel pipe is configured as the inner wall, the outer steel pipe is configured as the outer wall, and the front ends of the two layers of steel pipes are sealed and connected to form the interlayer cavity between the two layers of steel pipes.
[0013] Based on the above technical solution, the present disclosure also provides a fire detection device, including: a fire detection optical fiber with a fire detection probe at the front end, and the fire detection mounting sleeve in the above technical solution, wherein the tube body is sleeved on the outside of the fire detection optical fiber, and the fire detection probe is accommodated in the inner cavity.
[0014] Optionally, a second flange is provided at the rear end of the fire detection optical fiber, and the fire detection optical fiber is fixedly connected to the tube body via the second flange.
[0015] Through the above technical solution, in the fire detection installation sleeve provided by the present disclosure, compressed air can be supplied to the nozzle arranged on the front side of the fire detection probe through the first interface and the interlayer cavity, and sprayed out through the nozzle. The continuously sprayed compressed air can not only blow off the dust accumulated on the lens, but also form a wind curtain in front of the lens, thereby preventing the lens from being contaminated by impurities in the boiler. Through the fire detection installation sleeve, the cleaning of the lens of the fire detection probe is easy to maintain without manually pulling out the fire detection probe for cleaning, avoiding the interruption of the flame monitoring signal and the misjudgment of the operator caused by the error in the display of the fire detection intensity. The fire detection device provided by the present disclosure has the same technical effect as the fire detection installation sleeve in the above technical solution. In order to avoid unnecessary repetition, it will not be repeated here.
[0016] Other features and advantages of the present disclosure will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] The accompanying drawings are used to provide a further understanding of the present disclosure and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present disclosure but do not constitute a limitation of the present disclosure. In the accompanying drawings:
[0018] Figure 1 is a perspective view of a fire detection mounting sleeve according to a specific embodiment of the present disclosure;
[0019] Figure 2 It is an assembly perspective view of the fire detection installation sleeve and the fire detection optical fiber in a specific embodiment of the present disclosure.
[0020] Description of Reference Numerals
[0021] 1-tube body, 10-sandwich cavity, 11-inner wall, 12-outer wall, 13-opening, 14-inner cavity, 15-first flange,
[0022] 2- Nozzle,
[0023] 3- First interface,
[0024] 4- Second interface,
[0025] 5-Fire detection optical fiber, 51-Second flange,
[0026] 6- Fire detection probe, 61- Lens. DETAILED DESCRIPTION
[0027] The specific implementation of the present disclosure is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described herein is only used to illustrate and explain the present disclosure, and is not used to limit the present disclosure.
[0028] In the present disclosure, unless otherwise stated, directional words such as "front" and "rear" generally refer to the side of the fire detection device facing the flame in the boiler as the front and the side away from the flame in the boiler as the rear when the fire detection device is in normal use. "Inside" and "outside" refer to the inside and outside relative to the contour of the corresponding component itself. The terms "first" and "second" used in the present disclosure are to distinguish one element from another and do not have order and importance. In addition, when the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements.
[0029] According to a specific embodiment of the present disclosure, a fire detection installation sleeve is provided, referring to Figure 1 and Figure 2As shown, the fire detection mounting sleeve may include a tube body 1, a nozzle 2 and a first interface 3, wherein the tube body 1 is used to be sleeved on the outside of the fire detection optical fiber 5 so that the fire detection probe 6 at the front end of the fire detection optical fiber 5 is accommodated in the inner cavity 14 of the tube body 1, the front end of the tube body 1 can be extended into the boiler and is provided with an opening 13 so that the fire detection probe 6 monitors the flame through the opening 13, an interlayer cavity 10 may be formed between the inner wall 11 and the outer wall 12 of the tube body 1, the first interface 3 may be arranged on the outer wall 12, and may be fluidically connected to the interlayer cavity 10, the first interface 3 may be connected to an external compressed air source (not shown) to introduce compressed air into the interlayer cavity 10, the nozzle 2 may be arranged on the inner wall 11 at a position corresponding to the front side of the fire detection probe 6, and the nozzle 2 may be fluidically connected to the interlayer cavity 10 to spray compressed air toward the lens 61 of the fire detection probe 6.
[0030] Through the above technical solution, in the fire detection installation sleeve provided by the present disclosure, compressed air can be supplied to the nozzle 2 arranged on the front side of the fire detection probe 6 through the first interface 3 and the interlayer cavity 10, and ejected through the nozzle 2. The continuously ejected compressed air can not only blow away the dust accumulated on the lens 61, but also form a wind curtain in front of the lens 61, thereby preventing the lens 61 from being contaminated by impurities in the boiler. Through the fire detection installation sleeve, the cleaning of the lens 61 of the fire detection probe 6 is easy to maintain, without the need to manually pull out the fire detection probe 6 for cleaning, avoiding the operator's misjudgment caused by the interruption of the flame monitoring signal and the error in the display of the fire detection intensity.
[0031] In order to ensure the uniformity of compressed air injection, refer to Figure 1 and Figure 2 As shown, a plurality of nozzles 2 may be provided on the inner wall 11, and the plurality of nozzles 2 may be arranged in an array around the central axis of the tube body 1, so that the compressed air can be uniformly ejected on the front side of the lens 61, thereby making the thickness of the wind curtain in front of the lens 61 uniform, thereby improving the reliability of the wind curtain in blocking dust and impurities.
[0032] In order to improve the efficiency of removing dust from the lens 61 with compressed air, refer to Figure 1 and Figure 2 As shown, the nozzle 2 can extend obliquely from the inner wall 11 toward the rear end of the tube body 1 so that the nozzle 2 can spray the compressed air toward the lens 61 , thereby improving the accuracy of the compressed air in cleaning the dust on the lens 61 .
[0033] In a specific embodiment of the present disclosure, the radial angle between the nozzle 2 and the tube body 1 may be 50° to 70°, and preferably, the angle may be 60°.
[0034] In order to avoid the temperature of the fire detection optical fiber 5 being too high, refer to Figure 1 and Figure 2As shown, a second interface 4 can also be provided on the outer wall 12, and the second interface 4 can be connected to the fluid of the inner cavity 14. The second interface 4 can be connected to an external cooling air source to introduce cooling air into the inner cavity 14, so that the cooling air can cool the fire detection optical fiber 5 to prevent the temperature of the fire detection optical fiber 5 from being too high.
[0035] refer to Figure 1 and Figure 2 As shown, the second interface 4 can be arranged at a position of the tube body 1 corresponding to the outer peripheral surface of the fire detection optical fiber 5, so that the cooling air can sweep the outer peripheral surface of the fire detection optical fiber 5 after entering the inner cavity 14, thereby accelerating the cooling of the fire detection optical fiber 5 by the cooling air.
[0036] In order to make the tube body 1 and the fire detection optical fiber 5 fixedly connected, refer to Figure 1 and Figure 2 As shown, a first flange 15 may be provided at the rear end of the tube body 1 , and the tube body 1 may be fixedly connected to a second flange 51 at the rear end of the fire detection optical fiber 5 described below through the first flange 15 .
[0037] In order to facilitate the formation of the interlayer cavity 10 in the tube body 1, the tube body 1 can be made of a double-layer high-temperature resistant steel tube, the inner steel tube can be constructed as an inner wall 11, and the outer steel tube can be constructed as an outer wall 12. The front ends of the two layers of steel tubes can be sealed and connected to form an interlayer cavity 10 between the two layers of steel tubes, so that the interlayer cavity 10 is only connected to the first interface 3 and the nozzle 2 fluid to avoid leakage of compressed air.
[0038] Based on the above technical solution, the present disclosure also provides a fire detection device, referring to Figure 1 As shown, the fire detection device may include a fire detection optical fiber 5 and the fire detection mounting sleeve in the above technical solution. A fire detection probe 6 may be provided at the front end of the fire detection optical fiber 5. The tube body 1 of the fire detection mounting sleeve may be sleeved on the outside of the fire detection optical fiber 5, and the fire detection probe 6 may be accommodated in the inner cavity 14.
[0039] Through the above technical solution, the fire detection device provided by the present disclosure has the same technical effect as the fire detection installation sleeve in the above technical solution. In order to avoid unnecessary repetition, it will not be described here.
[0040] In order to facilitate the fixed connection between the fire detection optical fiber 5 and the tube body 1, refer to Figure 1 As shown, the rear end of the fire detection optical fiber 5 can be provided with a second flange 51, and the rear end of the tube body 1 can be provided with a first flange 15. The fire detection optical fiber 5 can be fixedly connected to the first flange 15 at the rear end of the tube body 1 through the second flange 51.
[0041] The preferred embodiments of the present disclosure are described in detail above in conjunction with the accompanying drawings; however, the present disclosure is not limited to the specific details in the above embodiments. Within the technical concept of the present disclosure, a variety of simple modifications can be made to the technical solution of the present disclosure, and these simple modifications all fall within the protection scope of the present disclosure.
[0042] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present disclosure will not further describe various possible combinations.
[0043] In addition, various embodiments of the present disclosure may be arbitrarily combined, and as long as they do not violate the concept of the present disclosure, they should also be regarded as the contents disclosed by the present disclosure.
Claims
1. A fire detection installation sleeve, characterized in that: include: The tube body is used to be sleeved on the outside of the fire detection optical fiber so that the fire detection probe at the front end of the fire detection optical fiber is accommodated in the inner cavity of the tube body. The front end of the tube body can extend into the boiler and is provided with an opening so that the fire detection probe can monitor the flame through the opening. An interlayer cavity is formed between the inner wall and the outer wall of the tube body. a first interface, which is disposed on the outer wall and is in fluid communication with the interlayer cavity so as to introduce compressed air into the interlayer cavity; and A nozzle is arranged on the inner wall at a position corresponding to the front side of the fire detection probe, and the nozzle is connected to the interlayer cavity fluid to spray compressed air toward the lens of the fire detection probe.
2. The fire detection installation sleeve according to claim 1, characterized in that: A plurality of nozzles are arranged on the inner wall, and the plurality of nozzles are arranged in an array around the central axis of the tube body.
3. The fire detection installation sleeve according to claim 1 or 2, characterized in that: The nozzle extends obliquely from the inner wall toward the rear end of the tube body.
4. The fire detection installation sleeve according to claim 3, characterized in that: The radial angle between the nozzle and the tube body is 50° to 70°.
5. The fire detection installation sleeve according to claim 1, characterized in that: The outer wall is also provided with a second interface, and the second interface is in fluid communication with the inner cavity so as to introduce cooling air into the inner cavity.
6. The fire detection installation sleeve according to claim 5, characterized in that: The second interface is arranged at a position of the tube body corresponding to the outer peripheral surface of the fire detection optical fiber.
7. The fire detection installation sleeve according to claim 1, characterized in that: A first flange is disposed at the rear end of the tube body, and the tube body is fixedly connected to the fire detection optical fiber via the first flange.
8. The fire detection installation sleeve according to claim 1, characterized in that: The tube body is made of double-layer steel pipes, the inner steel pipe is configured as the inner wall, the outer steel pipe is configured as the outer wall, and the front ends of the two layers of steel pipes are sealed and connected to form the sandwich cavity between the two layers of steel pipes.
9. A fire detection device, characterized in that: include: The fire detection optical fiber has a fire detection probe at the front end, and The fire detection installation sleeve according to any one of claims 1 to 8, wherein the tube body is sleeved on the outside of the fire detection optical fiber, and the fire detection probe is accommodated in the inner cavity.
10. The fire detection device according to claim 9, characterized in that: A second flange is provided at the rear end of the fire detection optical fiber, and the fire detection optical fiber is fixedly connected to the tube body via the second flange.