Flame detection optical fiber protective sleeve device

Abstract

The utility model discloses a flame detection optical fiber protective sleeve device, which relates to the technical field of flame detection device protection and comprises a front connecting pipe, a mounting pipe, a cooling air pipe connector and a locking end cover. Wherein supporting ribs are arranged on the inner wall of the front connecting pipe, and a baffle ring is arranged at the front end of the front connecting pipe; the tail end of the front connecting pipe is connected with the front end of the mounting pipe; the cooling air pipe coupler is of an inclined Y-shaped three-way structure, a fixing ring is arranged at the front end of the inclined Y-shaped three-way structure, and the tail end of the mounting pipe is connected into the fixing ring; two tail ends of the inclined Y-shaped three-way structure are respectively connected with a cooling air pipeline and a locking end cover; the supporting rib is used for supporting the flame detection optical fiber penetrating into the front coupling pipe; and the locking end cover is used for locking the flame detection optical fiber. The technical problem that dust is easily accumulated at the front end of the flame detection optical fiber conduit in the prior art is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of flame detection device protection, in particular to a flame detection optical fiber protection sleeve device. Background Art

[0002] As boiler safety detection equipment, flame detection devices are widely used in single-burner or multi-burner boilers in power plants, petrochemicals, and other industries. At various stages of boiler startup and operation, the burner flame is prepared for detection. When in use, the boiler burner fuel is put into operation, emitting infrared or ultraviolet rays of a certain frequency. The fire detection angle of the flame detector fire detection conduit is used to ensure that the fire detection optical fiber can effectively receive the light signal emitted by the fuel combustion and transmit it to the flame detector. The flame detector converts the light signal into an electrical signal and outputs it to the DCS system to detect the real-time combustion of the boiler. This effectively prevents the potential danger of furnace explosion that may occur when the fuel is sent into the furnace but not ignited, and provides protection for the safe and stable operation of the boiler.

[0003] Since dust is easily generated when the boiler burns, the optical fiber conduit of the flame detector is installed in this environment for a long time, and dust accumulates seriously at the front end of the conduit, causing the flame detector to generate a no-fire signal and eventually the boiler to shut down, causing serious losses to the power plant. Utility Model Content

[0004] The purpose of the utility model is to provide a fire detection optical fiber protective cover device in order to solve at least one of the above technical problems.

[0005] In the first aspect, an embodiment of the utility model provides a fire detection optical fiber protective cover device, comprising: a front connecting tube, a mounting tube, a cooling air duct connector, and a locking end cap; wherein, the inner wall of the front connecting tube is provided with support ribs, and the front end of the front connecting tube is provided with a retaining ring; the tail end of the front connecting tube is connected to the front end of the mounting tube; the cooling air duct connector is an inclined Y-type three-way structure, the front end of the inclined Y-type three-way structure is provided with a fixing ring, and the tail end of the mounting tube is connected to the fixing ring; the two tail ends of the inclined Y-type three-way structure are respectively connected to the cooling air duct and the locking end cap; the support ribs are used to support the fire detection optical fiber that penetrates into the front connecting tube; the locking end cap is used to lock the fire detection optical fiber.

[0006] Furthermore, the number of the support ribs is four, and the four support ribs are evenly distributed in a circle and welded on the inner wall of the front connecting pipe.

[0007] Furthermore, the retaining ring is fixed to the front end position inside the front connecting pipe by welding.

[0008] Furthermore, the cooling air duct connector is a 45° inclined Y-shaped three-way structure.

[0009] Furthermore, the tail end of the front connecting pipe is fixed to the front end of the mounting pipe by butt welding.

[0010] Furthermore, the mounting tube is a rigid tube.

[0011] Furthermore, the tail end of the mounting tube is connected to the fixing ring via threads.

[0012] Furthermore, a top screw is also provided on the fixing ring for locking the connection between the fixing ring and the mounting tube.

[0013] The utility model provides a fire detection optical fiber protective sleeve device. The support ribs in the front connecting tube can ensure that the fire detection optical fiber is in the center of the conduit; the retaining ring structure of the front connecting tube can effectively prevent the fly ash in the boiler furnace from accumulating on the lens of the fire detection optical fiber, ensuring the stability of the fire detection optical fiber in fire observation; the inclined Y-shaped three-way structure of the cooling air duct connector can minimize the influence of the bending of the conduit on the flow rate and flow direction of the fire detection cooling air. The utility model is easy to operate and maintenance-free, and alleviates the technical problem of easy dust accumulation at the front end of the fire detection optical fiber conduit in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the implementation methods of the present application or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0015] Figure 1 A schematic structural diagram of a fire detection optical fiber protective cover device provided in an embodiment of the utility model.

[0016] In the figure: 1. front connecting pipe, 11. supporting ribs, 12. retaining ring, 2. mounting pipe, 3. cooling air duct connector, 31. fixing ring, 32. top screw, 4. locking end cover, 5. cooling air duct. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0018] Figure 1 Schematic diagram of the structure of a fire detection optical fiber protective cover device provided according to an embodiment of the utility model. Figure 1 As shown, the device includes: a front connecting pipe 1, a mounting pipe 2, a cooling air duct coupler 3, and a locking end cover 4; wherein, a supporting rib 11 is provided on the inner wall of the front connecting pipe 1, and a retaining ring 12 is provided at the front end of the front connecting pipe 1; the tail end of the front connecting pipe 1 is connected to the front end of the mounting pipe 2; the cooling air duct coupler 3 is an oblique Y-type three-way structure, a fixing ring 31 is provided at the front end of the oblique Y-type three-way structure, and the tail end of the mounting pipe 2 is connected to the fixing ring 31; the two tail ends of the oblique Y-type three-way structure are respectively connected to the cooling air duct 5 and the locking end cover 4.

[0019] Specifically, the support rib 11 is used to support the fire detection optical fiber that penetrates into the front connecting tube 1.

[0020] The locking end cap 4 is used to lock the fire detection optical fiber.

[0021] Specifically, the cooling air duct 5 is used to deliver fire detection cooling air to the inside of the cooling air duct connector 3, so that the fire detection cooling air flows into the installation pipe 2 and the front connecting pipe 1 respectively through the inclined Y-shaped three-way structure, and is finally blown out from the front end of the baffle ring 12, thereby blocking the fly ash in the boiler furnace and ensuring the stability of the fire detection optical fiber fire detection.

[0022] Preferably, the cooling air duct connector 3 is a 45° inclined Y-shaped three-way structure. This structure allows the fire detection cooling air to continue to flow toward the front of the mounting tube 2 along the 45° inclined angle of the three-way structure, which can minimize the impact of the bending of the duct on the flow rate and flow direction of the fire detection cooling air.

[0023] Preferably, the number of the supporting ribs 11 is four, and the four supporting ribs 11 are evenly distributed in a circle and welded to the inner wall of the front connecting pipe 1 .

[0024] Preferably, the supporting rib 11 is a guide and limiting structure.

[0025] Specifically, the support ribs 11 of the guide and limiting structure of the front connecting tube 1 can ensure that the inner conduit assembly inside the front connecting tube 1 is accurately installed and fixed at the designed position, and ensure that the optical fiber can always be in the center position of the conduit, thereby ensuring the fire viewing angle of the flame detection device. At the same time, the circumferentially evenly distributed structure can also allow the fire detection cooling air to flow out of the conduit evenly.

[0026] Preferably, the retaining ring 12 is fixed to the front end position inside the front connecting pipe 1 by welding.

[0027] Preferably, the tail end of the front connecting pipe 1 is fixed to the front end of the mounting pipe 2 by butt welding.

[0028] Preferably, the tail end of the mounting tube 2 is connected to the fixing ring 31 by threads.

[0029] like Figure 1As shown, a top screw 32 is also provided on the fixing ring 31 for locking the connection between the fixing ring 31 and the mounting tube 2 , thereby ensuring the firmness of the connection between the fixing ring 31 and the mounting tube 2 .

[0030] Preferably, the mounting tube 2 is a rigid tube.

[0031] The embodiment of the utility model provides a fire detection optical fiber protective cover device, the overall structure of which is a purely rigid structure design, which can effectively improve the wear resistance and aging resistance of the fire detection conduit and extend the service life.

[0032] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0033] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A fire detection optical fiber protective cover device, characterized in that: include: A front connecting pipe, a mounting pipe, a cooling air duct coupler, and a locking end cap; wherein the inner wall of the front connecting pipe is provided with supporting ribs, and the front end of the front connecting pipe is provided with a retaining ring; the tail end of the front connecting pipe is connected to the front end of the mounting pipe; the cooling air duct coupler is an oblique Y-shaped three-way structure, the front end of the oblique Y-shaped three-way structure is provided with a fixing ring, and the tail end of the mounting pipe is connected to the fixing ring; the two tail ends of the oblique Y-shaped three-way structure are respectively connected to the cooling air duct and the locking end cap; The support ribs are used to support the fire detection optical fiber that penetrates into the front connecting tube; The locking end cap is used to lock the fire detection optical fiber.

2. The fire detection optical fiber protective cover device according to claim 1, characterized in that: The number of the support ribs is four, and the four support ribs are evenly distributed in a circle and welded on the inner wall of the front connecting pipe.

3. The fire detection optical fiber protective cover device according to claim 1, characterized in that: The retaining ring is fixed to the front end position inside the front connecting pipe by welding.

4. The fire detection optical fiber protective cover device according to claim 1, characterized in that: The cooling air duct connector is a 45° inclined Y-type three-way structure.

5. The fire detection optical fiber protective cover device according to claim 1, characterized in that: The tail end of the front connecting pipe is fixed to the front end of the mounting pipe by butt welding.

6. The fire detection optical fiber protective cover device according to claim 1, characterized in that: The mounting tube is a rigid tube.

7. The fire detection optical fiber protective cover device according to claim 1, characterized in that: The tail end of the mounting tube is connected to the fixing ring through threads.

8. The flame detection optical fiber protective cover device according to claim 1, characterized in that: The fixing ring is also provided with a top screw for locking the connection between the fixing ring and the mounting tube.

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