Boiler tail manhole fire observation lens cooler

Abstract

The invention discloses a boiler tail manhole fire observation lens cooler which comprises a manhole cooling water tank, and a lengthened lens used for observing and collecting flames in a boiler hearth in real time is arranged in the manhole cooling water tank. And a cooling water outlet return pipe, a cooling water inlet diffusion pipe and an air curtain generator which extend to the outer part of the end surface of one side of the manhole cooling water tank are arranged in the manhole cooling water tank. According to the boiler tail manhole fire observation lens cooler, the manhole cooling water tank, the cooling water inlet diffusing pipe and the cooling water outlet backflow pipe form a cooling water circulation channel, a lengthened lens installed in the cooling water tank is cooled, and the lens is prevented from being damaged by the high temperature of a hearth; meanwhile, an air curtain can be formed in front of the objective lens of the lengthened lens in a working state through the air curtain generator, so that high-temperature and high-heat gas in a hearth is prevented from invading and damaging the lens; pressure-bearing parts of a boiler main body are not influenced, the cost is low, and the installation is convenient.

Description

Technical Field

[0001] The invention relates to the technical field of gas boilers, and more specifically to a fire viewing lens cooler for a boiler tail manhole. Background Art

[0002] When monitoring the operation of a gas boiler, it is necessary to collect the actual flame status of the boiler combustion in real time in order to detect combustion anomalies and make timely optimization adjustments. This can avoid accidents on the one hand; on the other hand, it can improve the efficiency of boiler combustion to achieve the goal of energy saving and carbon reduction.

[0003] Since the temperature of the furnace is high, the furnace wall is thick, and the observation hole is small, if the lens is to be used to collect a more complete image of the flame combustion in the furnace, it is necessary to extend the lens to penetrate deeper into the interior for collection. Currently, there is a lack of protective devices for the extended lens, which makes the extended lens easily damaged.

[0004] Therefore, a kind of boiler tail end manhole fire viewing lens cooler is badly needed. Summary of the invention

[0005] The purpose of the present invention is to provide a boiler tail manhole fire viewing lens cooler to solve the above-mentioned problems in the prior art, and to cool down the extended lens installed in the cooling water tank to avoid the high temperature of the furnace from damaging the lens.

[0006] The present invention provides a boiler tail manhole fire-viewing lens cooler, which comprises: a manhole cooling water tank, an extended lens for real-time observation and collection of the flame in the boiler furnace is arranged inside the manhole cooling water tank, and a cooling water outlet return pipe extending to the outside of one side end face of the manhole cooling water tank, a cooling water inlet discharge pipe and an air curtain generator are arranged inside the manhole cooling water tank.

[0007] The boiler tail manhole fire-viewing lens cooler as described above, wherein, preferably, the manhole cooling water tank is cylindrical in shape, a lens mounting hole for mounting the extended lens is provided at the center position of the front end surface of the manhole cooling water tank, a lens working tube cavity for accommodating the extended lens and extending along the axial direction of the manhole cooling water tank corresponding to the lens mounting hole is provided inside the manhole cooling water tank; a plurality of air curtain blowing holes are provided on the outer peripheral surface of the lens working tube cavity; and a lens objective observation hole is provided on the rear end surface of the lens working tube cavity.

[0008] The boiler tail manhole fire viewing lens cooler as described above, wherein preferably, the front end surface of the manhole cooling water tank is also provided with a cooling water inlet discharge pipe mounting hole for mounting the cooling water inlet discharge pipe, a cooling water outlet return pipe mounting hole for mounting the cooling water outlet return pipe, a temperature probe blind pipe mounting hole, a temperature and pressure safety valve mounting hole and an air curtain generator air pipe mounting hole;

[0009] A cooling water inlet dispersing pipe seat vertically corresponding to the cooling water inlet dispersing pipe mounting hole and a cooling water outlet return pipe seat vertically corresponding to the cooling water outlet return pipe mounting hole are arranged on the inner side of the rear end of the manhole cooling water tank;

[0010] A temperature probe blind pipe corresponding to the temperature probe blind pipe installation hole is arranged inside the manhole cooling water tank.

[0011] The boiler tail manhole fire viewing lens cooler as described above, wherein, preferably, the cooling water outlet return pipe has a cooling water outlet return pipe outlet and a cooling water outlet return pipe end which are relatively arranged, wherein the cooling water outlet return pipe outlet is located outside the front end surface of the manhole cooling water tank, the cooling water outlet return pipe end is located inside the manhole cooling water tank, the cooling water outlet return pipe end is inserted into the cooling water outlet return pipe seat, the cooling water outlet return pipe outlet end is provided with a cooling water outlet return pipe thread, and the side wall of the cooling water outlet return pipe is provided with a plurality of cooling water outlet return pipe water outlet holes.

[0012] The boiler tail manhole fire viewing lens cooler as described above, wherein, preferably, the cooling water inlet discharge pipe has a cooling water inlet discharge pipe water inlet and a cooling water discharge pipe end which are relatively arranged, wherein the cooling water inlet discharge pipe water inlet is located outside the front end surface of the manhole cooling water tank, the cooling water discharge pipe end is located inside the manhole cooling water tank, the cooling water discharge pipe end is inserted into the cooling water inlet discharge pipe seat, the cooling water inlet discharge pipe water inlet end is provided with a cooling water inlet discharge pipe thread, and the side wall of the cooling water inlet discharge pipe is provided with a plurality of cooling water inlet discharge pipe water outlet holes.

[0013] The boiler tail manhole fire viewing lens cooler as described above, wherein, preferably, an annular air chamber is provided on the rear end face of the air curtain generator, the annular air chamber is a hollow disc-shaped structure, an annular air chamber center hole is provided at the center position of the annular air chamber, the annular air chamber center hole is coaxially arranged with the lens mounting hole, an annular air chamber inner cavity is formed inside the annular air chamber, the annular air chamber inner cavity has an annular air chamber inner ring lower edge and an annular air chamber inner ring upper edge, the annular air chamber is connected to an air pipe, the air pipe is bent, has a relatively arranged air pipe inlet and air pipe outlet, the air pipe passes through the air pipe mounting hole of the air curtain generator at the front end face of the manhole cooling water tank.

[0014] As described above, in the boiler tail manhole fire viewing lens cooler, preferably, the other side end surface of the manhole cooling water tank is covered with an insulating asbestos sleeve, and one side of the insulating asbestos sleeve is covered with an insulating cotton shaping fastener.

[0015] The boiler tail manhole fire viewing lens cooler as described above, wherein preferably, the heat insulation cotton shaping fastener comprises a shaping fastener sleeve, the bottom of the shaping fastener sleeve is provided with a shaping fastener inner bottom, and the center position of the shaping fastener inner bottom is provided with a shaping fastener center hole;

[0016] The heat-insulating asbestos sleeve comprises a heat-insulating asbestos sleeve sleeve, the bottom of which is provided with a heat-insulating asbestos sleeve inner bottom, and a heat-insulating asbestos sleeve central hole is opened at the central position of the heat-insulating asbestos sleeve inner bottom.

[0017] As described above, in the boiler tail manhole fire viewing lens cooler, preferably, a lens protection top cover positioning ring, a lens protection cover insulation pad and a lens protection top cover are sequentially arranged between the manhole cooling water tank and the insulating asbestos sleeve.

[0018] The boiler tail manhole fire viewing lens cooler as described above, wherein preferably, the lens protection top cover positioning ring comprises a positioning ring bowl and a positioning ring outer cone which are arranged in sequence, the positioning ring bowl is a hollow cylinder, the positioning ring outer cone is provided with a positioning ring straight groove extending to the middle position of the side wall of the positioning ring bowl, and the side wall of the positioning ring bowl is provided with a positioning ring outer thread;

[0019] The lens protection cover heat insulation pad has a front conical groove and a rear conical groove which are arranged opposite to each other;

[0020] The lens protection top cover comprises a top cover bowl and a top cover outer cone which are arranged in sequence. The top cover outer cone is a hollow cylinder. A top cover straight groove is provided at the lower end of the top cover bowl. A top cover outer thread is provided on the side wall of the top cover bowl.

[0021] The invention provides a fire-viewing lens cooler for a manhole at the rear of a boiler. A cooling water tank for the manhole, a cooling water inlet discharge pipe and a cooling water outlet return pipe form a cooling water circulation passage, which cools down an extended lens installed in the cooling water tank to prevent the high temperature of the furnace from damaging the lens. At the same time, an air curtain generator can form an air curtain in front of the objective lens of the extended lens in a working state to prevent the high-temperature and high-heat gas in the furnace from invading and damaging the lens. The refractory clay round cake under the manhole cover plate of the furnace is replaced with the fire-viewing lens cooler for the manhole at the rear of the boiler, and the manhole cover plate of the furnace is opened with pipeline installation holes required by the cooler to connect the water path and gas path required by the cooler and the center hole required for the installation of the extended lens, etc., which has no influence on the pressure-bearing parts of the boiler main body, has low cost and is easy to install. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention will be further described below with reference to the accompanying drawings, in which:

[0023] Figure 1An exploded perspective view of an embodiment of a boiler tail manhole fire viewing lens cooler provided by the present invention;

[0024] Figure 2 This is a schematic diagram of the internal structure of the manhole cooling water tank;

[0025] Figure 3 It is a schematic diagram of the front face structure of the manhole cooling water tank;

[0026] Figure 4 for Figure 2 Enlarged view of the middle circled part;

[0027] Figure 5 Schematic diagram of the internal structure of the air curtain generator;

[0028] Figure 6 It is a top view of the air curtain generator;

[0029] Figure 7 This is a schematic diagram of the internal structure of the cooling water inlet discharge pipe;

[0030] Figure 8 It is a top view of the cooling water inlet discharge pipe;

[0031] Fig. 9 It is a schematic diagram of the internal structure of the cooling water return pipe;

[0032] Fig.10 This is a schematic diagram of the internal structure of the lens protection top cover positioning ring;

[0033] Fig.11 It is a schematic diagram of the structure of the thermal insulation pad of the lens protection cover;

[0034] Fig.12 This is the front view of the thermal insulation pad of the lens protection cover;

[0035] Fig.13 The front view of the lens protection top cover;

[0036] Fig.14 It is a three-dimensional structural diagram of the heat insulation cotton shaping fastener;

[0037] Fig.15 It is the main view of the fastener for shaping the thermal insulation cotton;

[0038] Fig.16 A top view of the fasteners for shaping the thermal insulation cotton;

[0039] Fig.17 It is the front view of the thermal insulation asbestos sleeve;

[0040] Fig.18 It is a top view of the thermal insulation asbestos sleeve.

[0041] Explanation of the reference numerals: 2-manhole cooling water tank, 2a-cooling water inlet discharge pipe seat, 2b-cooling water outlet return pipe seat, 2c-temperature probe blind pipe, 2d-cooling water inlet discharge pipe mounting hole, 2e-air curtain generator air pipe mounting hole, 2f-cooling water outlet return pipe mounting hole, 2g-temperature probe blind pipe mounting hole, 2h-lens mounting hole, 2i-lens working tube cavity, 2j-lens objective observation hole, 2k-air curtain blowing hole , 2L-temperature and pressure safety valve installation hole, 3-cooling water return pipe, 3a-cooling water return pipe outlet, 3b-cooling water return pipe end, 3c-cooling water return pipe outlet hole, 3d-cooling water return pipe thread, 4-cooling water inlet discharge pipe, 4a-cooling water inlet discharge pipe inlet, 4b-cooling water discharge pipe end, 4c-cooling water inlet discharge pipe outlet hole, 4d-cooling water inlet discharge pipe thread, 5-air curtain occurrence ,5a-air delivery pipe,5b-annular air chamber,5c-air delivery pipe outlet,5d-annular air chamber inner ring lower edge,5e-annular air chamber cavity,5f-annular air chamber inner ring upper edge,5g-annular air chamber center hole,5h-air delivery pipe inlet,6-lens protection cover insulation pad,6a-front conical groove,6b-reverse conical groove,7-lens protection top cover,7a-top cover outer thread,7b-top cover one-slot,7c-top cover outer cone Body, 7d-top cover bowl, 8-lens protection top cover positioning ring, 8a-positioning ring outer thread, 8b-positioning ring slot, 8c-positioning ring outer cone, 8d-positioning ring bowl, 9-insulating cotton shaping fastener, 9a-forming fastener center hole, 9b-forming fastener sleeve, 9c-forming fastener inner bottom, 10-insulating asbestos sleeve, 10a-insulating asbestos sleeve center hole, 10b-insulating asbestos sleeve inner bottom, 10c-insulating asbestos sleeve. DETAILED DESCRIPTION

[0042] Various exemplary embodiments of the present disclosure will now be described in detail with reference to the accompanying drawings. The description of the exemplary embodiments is merely illustrative and is in no way intended to limit the present disclosure and its application or use. The present disclosure can be implemented in many different forms and is not limited to the embodiments described herein. These embodiments are provided to make the present disclosure thorough and complete and to fully express the scope of the present disclosure to those skilled in the art. It should be noted that unless otherwise specifically stated, the relative arrangement of the components and steps, the composition of the materials, the numerical expressions and the numerical values ​​set forth in these embodiments should be interpreted as being merely exemplary and not as limiting.

[0043] The words "first", "second" and similar words used in this disclosure do not indicate any order, quantity or importance, but are only used to distinguish different parts. The words "include" or "comprises" and similar words mean that the elements before the word include the elements listed after the word, and do not exclude the possibility of including other elements. "Up", "down" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0044] In the present disclosure, when a specific component is described as being located between a first component and a second component, there may or may not be an intermediate component between the specific component and the first component or the second component. When a specific component is described as being connected to other components, the specific component may be directly connected to the other components without an intermediate component, or may not be directly connected to the other components but have an intermediate component.

[0045] All terms (including technical terms or scientific terms) used in the present disclosure have the same meanings as those understood by ordinary technicians in the field to which the present disclosure belongs, unless otherwise specifically defined. It should also be understood that terms defined in general dictionaries, such as general dictionaries, should be interpreted as having meanings consistent with their meanings in the context of the relevant technology, and should not be interpreted in an idealized or extremely formal sense, unless explicitly defined herein.

[0046] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered part of the specification.

[0047] like Figure 1-Figure 18 As shown, the boiler tail manhole fire viewing lens cooler provided in this embodiment includes: a manhole cooling water tank 2, an extended lens for real-time observation and collection of the flame in the boiler furnace is arranged inside the manhole cooling water tank 2, and a cooling water outlet return pipe 3 extending to the outside of one side end face of the manhole cooling water tank 2, a cooling water inlet discharge pipe 4 and an air curtain generator 5 are arranged inside the manhole cooling water tank 2.

[0048] The manhole cooling water tank 2, the cooling water outlet return pipe 3, the cooling water inlet discharge pipe 4 and the air curtain generator 5 are all made of metal materials, such as stainless steel. During installation, the cooling water outlet return pipe 3 is located above the cooling water inlet discharge pipe 4, so that after being put into use, it forms a low-inlet and high-outlet water circulation system with the manhole cooling water tank 2 connected thereto, and isolates and cools the extended lens installed in the manhole cooling water tank 2 when it is put into use, so as to avoid the high temperature in the furnace from damaging the lens.

[0049] During operation, the extended lens is installed in the manhole cooling water tank 2. Through the manhole on the extended lens, the image of the flame burning in the furnace can be observed and collected in real time in a relatively complete manner. When the gas boiler is ignited and running, the temperature in the furnace of the tail manhole reaches about 1000°C. The manhole cooling water tank 2, the cooling water inlet discharge pipe 4 and the cooling water outlet return pipe 3 constitute a cooling water circulation path. The extended lens installed in the cooling water tank 2 is cooled to prevent the high temperature of the furnace from damaging the lens. At the same time, an air curtain generator 5 can be used to form an air curtain in front of the objective lens of the extended lens in the working state to prevent the high-temperature and hot gas in the furnace from invading and damaging the lens.

[0050] Wherein, the shape of the manhole cooling water tank 2 is cylindrical, such as Figure 2-Figure 4 As shown, a lens mounting hole 2h for mounting the extended lens is provided at the center of the front end face of the manhole cooling water tank 2, and a lens working tube cavity 2i for accommodating the extended lens is provided inside the manhole cooling water tank 2 and extends along the axial direction of the manhole cooling water tank 2 and corresponds to the lens mounting hole 2h, and the lens working tube cavity 2i is in the shape of a hollow cylinder; a plurality of air curtain spray holes 2k are provided on the outer peripheral surface of the lens working tube cavity 2i; and a lens objective observation hole 2j is provided on the rear end face of the lens working tube cavity 2i. Among them, the objective end of the extended lens is installed at the front end of the air curtain spray hole 2k. In some embodiments of the present invention, the number of the air curtain spray holes 2k is 5-9, for example, 7, and is evenly distributed on the outer peripheral surface of the lens working tube cavity 2i. It should be noted that the present invention does not specifically limit the number and distribution of the air curtain spray holes 2k.

[0051] The boiler tail manhole fire-viewing lens cooler of the present invention is installed under the manhole cover plate of a type of gas boiler. It has two main functions: on the one hand, it replaces heat-insulating and high-temperature resistant devices such as refractory bricks to prevent the high-temperature heat energy of the furnace from diffusing to the external environment of the boiler; on the other hand, it provides a cylindrical placement cavity with a lower temperature than the furnace for the extended lens for real-time observation and collection of the flame in the boiler furnace, namely, the lens working tube cavity 2i, through the manhole cooling water tank 2, so as to protect the extended lens placed therein from being damaged by the high temperature in the furnace.

[0052] Furthermore, if Figure 3 As shown, the front end surface of the manhole cooling water tank 2 is also provided with a cooling water inlet discharge pipe mounting hole 2d for mounting the cooling water inlet discharge pipe 4, a cooling water outlet return pipe mounting hole 2f for mounting the cooling water outlet return pipe 3, a temperature probe blind pipe mounting hole 2g, a temperature and pressure safety valve mounting hole 2L and an air curtain generator air pipe mounting hole 2e;

[0053] The inner side of the rear end of the manhole cooling water tank 2 is provided with a cooling water inlet dispersing pipe seat 2a vertically corresponding to the cooling water inlet dispersing pipe mounting hole 2d and a cooling water outlet return pipe seat 2b vertically corresponding to the cooling water outlet return pipe mounting hole 2f;

[0054] A temperature probe blind pipe 2c corresponding to the temperature probe blind pipe installation hole 2g is arranged inside the manhole cooling water tank 2.

[0055] Furthermore, if Fig. 9 As shown, the cooling water outlet return pipe 3 has a cooling water outlet return pipe outlet 3a and a cooling water outlet return pipe end 3b that are relatively arranged, wherein the cooling water outlet return pipe outlet 3a is located outside the front end surface of the manhole cooling water tank 2, and the cooling water outlet return pipe end 3b is located inside the manhole cooling water tank 2, and the cooling water outlet return pipe end 3b is inserted into the cooling water outlet return pipe seat 2b, and a cooling water outlet return pipe thread 3d is provided at the end of the cooling water outlet return pipe outlet 3a, and a plurality of cooling water outlet return pipe water outlet holes 3c are opened on the side wall of the cooling water outlet return pipe 3.

[0056] Furthermore, if Figure 7 and Figure 8 As shown, the cooling water inlet discharge pipe 4 has a cooling water inlet discharge pipe water inlet 4a and a cooling water discharge pipe end 4b which are arranged opposite to each other, wherein the cooling water inlet discharge pipe water inlet 4a is located outside the front end surface of the manhole cooling water tank 2, the cooling water discharge pipe end 4b is located inside the manhole cooling water tank 2, the cooling water discharge pipe end 4b is inserted into the cooling water inlet discharge pipe seat 2a, the cooling water inlet discharge pipe water inlet 4a end is provided with a cooling water inlet discharge pipe thread 4d, and the side wall of the cooling water inlet discharge pipe 4 is provided with a plurality of cooling water inlet discharge pipe outlet holes 4c. When the assembly is put into use, the cooling water inlet discharge pipe thread 4d of the cooling water inlet discharge pipe 4 and the cooling water outlet return pipe thread 3d of the cooling water outlet return pipe 3 are connected to the external water inlet pipeline and water outlet pipeline through the holes of the boiler tail manhole cover plate.

[0057] Furthermore, if Figure 5 and Figure 6As shown, the rear end face of the air curtain generator 5 is provided with an annular air chamber 5b, which is a hollow disc-shaped structure. In the present invention, the air curtain blowing holes 2k penetrate the side wall of the lens working tube cavity 2i, and the outer circumference of the air curtain blowing holes 2k is covered by the annular air chamber 5b of the air curtain generator 5 located inside the manhole cooling water tank 2. An annular air chamber center hole 5g is opened at the center of the annular air chamber 5b, and the annular air chamber center hole 5g is coaxially arranged with the lens mounting hole 2h. An annular air chamber inner cavity 5e is formed inside the annular air chamber 5b, and the annular air chamber inner cavity 5e has an annular air chamber lower ring edge 5d and an annular air chamber upper ring edge 5f. The annular air chamber lower ring edge 5d and the annular air chamber upper ring edge 5f of the air curtain generator 5 completely surround the 7 air curtain blowing holes 2k, forming a relatively closed annular air chamber 5b, and providing an annular micro positive pressure air chamber for the 7 air curtain blowing holes 2k. The compressed air in the annular air chamber 5b is blown into the lens working tube cavity 2i through 7 air curtain spray holes 2k, forming an air curtain in front of the extended lens objective when it is put into operation to prevent the high-temperature and hot gas in the furnace from invading and damaging the lens.

[0058] Furthermore, if Figure 5 As shown, the annular air chamber 5b is connected to the air pipe 5a, the air pipe 5a is bent, and has an air pipe inlet 5h and an air pipe outlet 5c arranged relatively, and the air pipe 5a passes through the air curtain generator air pipe installation hole 2e at the front end surface of the manhole cooling water tank 2. In the present invention, the annular air chamber 5b of the air curtain generator 5 is connected to its air pipe 5a, and the front end of the air pipe 5a passes through the air curtain generator air pipe installation hole 2e at the front end of the manhole cooling water tank 2, and when the assembly is installed, it will be connected to the external air pipeline through the hole of the boiler manhole cover. In the present invention, the main body of the air curtain generator 5 is located in the manhole cooling water tank 2, one end of the air pipe 5a of the air curtain generator 5 passes through the air curtain generator air pipe installation hole 2e, and the other end is connected to the annular air chamber 5b, the middle part of the air pipe 5a has a certain curvature, and its annular air chamber 5b is an annular semi-open cavity with an open inner ring wall. During operation, the air curtain generator 5 continuously outputs airflow to the air curtain blowing holes 2k of the manhole cooling water tank 2 through the annular air chamber 5b, and continuously blows the objective lens end face of the extended lens installed at the front end of the lens working tube cavity 2i of the manhole cooling water tank 2.

[0059] Furthermore, if Figure 1As shown, the other side end surface of the manhole cooling water tank 2 is covered with an insulating asbestos sleeve 10, and one side of the insulating asbestos sleeve 10 is covered with an insulating cotton shaping fastener 9. Among them, the insulating asbestos sleeve 10 is sleeved on the outside of the end surface near the furnace of the manhole cooling water tank 2, and the insulating asbestos sleeve 10 is a barrel-shaped structure as a whole, which is used to prevent the heat energy in the furnace from being directly transferred to the manhole cooling water tank 2. Further, the insulating asbestos sleeve 10 is made of aluminum silicate ceramic fiber material, and the insulating cotton shaping fastener 9 is made of metal material, such as carbon steel. Further, the insulating asbestos sleeve 10 and the insulating cotton shaping fastener 9 both have a center hole, so that the aforementioned extended lens can collect flame images through the center hole. Since the insulating asbestos sleeve 10 is relatively soft, it can be fixed by the insulating cotton shaping fastener 9 to prevent the insulating asbestos sleeve 10 from being greatly deformed and detached during installation and use.

[0060] Specifically, if Figure 14-16 As shown, the heat insulating cotton shaping fastener 9 is a metal hollow barrel bottom structure, and the heat insulating cotton shaping fastener 9 includes a shaping fastener sleeve 9b, a shaping fastener inner bottom 9c is provided at the bottom of the shaping fastener sleeve 9b, and a shaping fastener center hole 9a is opened at the center position of the shaping fastener inner bottom 9c.

[0061] Furthermore, if Figure 17-Figure 18 As shown, the heat insulating asbestos sleeve 10 comprises a heat insulating asbestos sleeve sleeve 10c, a heat insulating asbestos sleeve inner bottom 10b is arranged at the bottom of the heat insulating asbestos sleeve sleeve 10c, and a heat insulating asbestos sleeve central hole 10a is opened at the center position of the heat insulating asbestos sleeve inner bottom 10b.

[0062] Furthermore, if Figure 1As shown, a lens protection cover positioning ring 8, a lens protection cover heat insulation pad 6 and a lens protection cover 7 are sequentially arranged between the manhole cooling water tank 2 and the heat insulation asbestos sleeve 10. Among them, the lens protection cover positioning ring 8, the lens protection cover heat insulation pad 6 and the lens protection cover 7 all have a central hole, and are sequentially arranged at the rear end of the air curtain blowing hole 2k of the manhole cooling water tank 2. Moreover, as mentioned above, the objective end of the extended lens is installed at the front end of the air curtain blowing hole 2k. As a result, a semi-open positive air pressure chamber with a central hole is formed between the objective end of the extended lens and the lens protection cover positioning ring 8. The airflow passes through the lens protection cover positioning ring 8, the lens protection cover heat insulation pad 6, the lens protection cover 7 and the central hole and blows to the inside of the furnace, thereby preventing the hot air in the furnace from invading the chamber of the objective end of the extended lens (i.e., the lens working tube cavity 2i) and damaging the lens. Specifically, the compressed air flow in the annular air chamber 5b of the air curtain generator 5 is blown into the lens working tube cavity 2i through the 7 air curtain blowing holes 2k, forming an air curtain in front of the extended lens objective when it is put into operation. The air flow is then blown into the boiler furnace through the lens protection top cover positioning ring 8, the lens protection cover insulation pad 6, the lens protection top cover 7, the insulation asbestos sleeve 10 and the insulation cotton shaping fastener 9 to prevent the high-temperature and high-heat gas in the furnace from invading and damaging the lens.

[0063] Specifically, if Fig.10 As shown, the lens protection top cover positioning ring 8 includes a positioning ring bowl 8d and a positioning ring outer cone 8c which are arranged in sequence. The positioning ring bowl 8d is a hollow cylinder. The positioning ring outer cone 8c is provided with a positioning ring straight groove 8b extending to the middle position of the side wall of the positioning ring bowl 8d. The side wall of the positioning ring bowl 8d is provided with a positioning ring outer thread 8a.

[0064] Furthermore, if Fig.11 and Fig.12 As shown, the lens protection cover heat insulation pad 6 has a front conical groove 6a and a rear conical groove 6b which are arranged opposite to each other.

[0065] Furthermore, if Fig.13 As shown, the lens protection top cover 7 includes a top cover bowl 7d and a top cover outer cone 7c which are arranged in sequence. The top cover outer cone 7c is a hollow cylinder. A top cover straight groove 7b is provided at the lower end of the top cover bowl 7d, and a top cover outer thread 7a is provided on the side wall of the top cover bowl 7d.

[0066] The airflow sprayed out of the air curtain blowing hole 2k cannot flow to the end where the lens is located through the lens mounting hole 2h of the manhole cooling water tank 2k due to the obstruction of the extended lens, while the lens protection cover positioning ring 8, the lens protection cover insulation pad 6 and the lens protection top cover 7 are installed in sequence at the end near the furnace. They are all annular structures with a central hole. Since the diameter of their central holes is much smaller than the diameter of the lens mounting hole 2h inside the manhole cooling water tank 2, an obvious positive pressure cavity with an open hole is formed between them and the lens. The airflow in the cavity is blown out through the open hole, blocking the high-temperature gas in the furnace from invading the cavity where the lens is located (i.e., the lens working tube cavity 2i), and enabling the lens to collect the image of the furnace flame through their middle hole.

[0067] The lens protection cover positioning ring 8, the lens protection cover heat insulation pad 6, and the lens protection top cover 7 are all annular structures with a central small hole. The lens protection cover heat insulation pad 6 is made of heat-insulating refractory material, such as aluminum silicate ceramic fiber material, and is an annular structure with a thin middle and thick edges. Because of its soft texture, the lens protection cover positioning ring 8 is installed at the end near the lens, and the lens protection top cover 7 is installed near the furnace end. The lens protection top cover positioning ring 8 and the lens protection top cover 7 are both made of metal materials, such as stainless steel materials. They are set for positioning and installing the lens protection cover heat insulation pad 6. The lens protection cover positioning ring 8 and the lens protection top cover 7 are bowl-shaped structures with a central hole. In order to facilitate installation and positioning in the lens installation hole 2h of the manhole cooling water tank 2, they also have a straight groove structure and an outer thread. When installed, they face the cone face to the cone face so that the conical objective end of the extended lens enters the inner cavity of the positioning ring cover bowl 8d of the lens protection cover positioning ring 8 and the outer side of the top cover outer cone 7c of the lens protection top cover 7 is relatively installed. The structural design and installation design of the lens protection cover positioning ring 8, the lens protection cover insulation pad 6, and the lens protection top cover 7 are, on the one hand, to prevent the high-temperature gas in the furnace from invading the cavity where the objective lens is located, that is, the lens working tube cavity 2i, and damaging the lens; on the other hand, to reduce the tunnel effect and avoid them blocking the field of view of the objective lens and affecting the collection of flame images.

[0068] The boiler tail manhole fire viewing lens cooler provided by the embodiment of the present invention comprises a manhole cooling water tank, a cooling water inlet discharge pipe and a cooling water outlet return pipe which form a cooling water circulation passage, so as to cool down the extended lens installed in the cooling water tank and prevent the high temperature of the furnace from damaging the lens; at the same time, an air curtain generator can form an air curtain in front of the objective lens of the extended lens put into operation to prevent the high temperature and high heat gas in the furnace from invading and damaging the lens; the refractory clay round cake under the furnace manhole cover plate is replaced with the boiler tail manhole fire viewing lens cooler, and the furnace manhole cover plate is opened with the pipeline installation holes required by the cooler to connect the water path, gas path and the center hole required for the installation of the extended lens required by the cooler, which has no influence on the pressure-bearing parts of the boiler body, has low cost and is easy to install.

[0069] So far, various embodiments of the present disclosure have been described in detail. In order to avoid obscuring the concept of the present disclosure, some details known in the art are not described. Based on the above description, those skilled in the art can fully understand how to implement the technical solution disclosed here.

[0070] Although some specific embodiments of the present disclosure have been described in detail by way of examples, it should be understood by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the present disclosure. It should be understood by those skilled in the art that the above embodiments may be modified or some technical features may be replaced by equivalents without departing from the scope and spirit of the present disclosure. The scope of the present disclosure is defined by the appended claims.

Claims

1. A boiler tail manhole fire viewing lens cooler, characterized in that: include: A manhole cooling water tank is provided inside the manhole cooling water tank with an extended lens for real-time observation and collection of the flame in the boiler furnace, and a cooling water outlet return pipe, a cooling water inlet discharge pipe and an air curtain generator extending to the outside of one end face of the manhole cooling water tank are provided inside the manhole cooling water tank.

2. The boiler tail manhole fire viewing lens cooler according to claim 1, characterized in that: The manhole cooling water tank is cylindrical in shape, and a lens mounting hole for mounting the extended lens is provided at the center of the front end surface of the manhole cooling water tank; a lens working tube cavity for accommodating the extended lens and extending along the axial direction of the manhole cooling water tank corresponding to the lens mounting hole is provided inside the manhole cooling water tank; a plurality of air curtain blowing holes are provided on the outer peripheral surface of the lens working tube cavity; and a lens objective observation hole is provided on the rear end surface of the lens working tube cavity.

3. The boiler tail manhole fire viewing lens cooler according to claim 2, characterized in that: The front end surface of the manhole cooling water tank is also provided with a cooling water inlet discharge pipe installation hole for installing the cooling water inlet discharge pipe, a cooling water outlet return pipe installation hole for installing the cooling water outlet return pipe, a temperature probe blind pipe installation hole, a temperature and pressure safety valve installation hole and an air curtain generator air pipe installation hole; A cooling water inlet dispersing pipe seat vertically corresponding to the cooling water inlet dispersing pipe mounting hole and a cooling water outlet return pipe seat vertically corresponding to the cooling water outlet return pipe mounting hole are arranged on the inner side of the rear end of the manhole cooling water tank; A temperature probe blind pipe corresponding to the temperature probe blind pipe installation hole is arranged inside the manhole cooling water tank.

4. The boiler tail manhole fire viewing lens cooler according to claim 3, characterized in that: The cooling water outlet return pipe has a cooling water outlet return pipe outlet and a cooling water outlet return pipe end which are relatively arranged, wherein the cooling water outlet return pipe outlet is located outside the front end surface of the manhole cooling water tank, the cooling water outlet return pipe end is located inside the manhole cooling water tank, the cooling water outlet return pipe end is inserted into the cooling water outlet return pipe seat, the cooling water outlet return pipe outlet end is provided with a cooling water outlet return pipe thread, and the side wall of the cooling water outlet return pipe is provided with a plurality of cooling water outlet return pipe water outlet holes.

5. The boiler tail manhole fire viewing lens cooler according to claim 3, characterized in that: The cooling water inlet and discharge pipe comprises a cooling water inlet and a cooling water discharge pipe end which are arranged relatively, wherein the cooling water inlet and discharge pipe inlet is located outside the front end surface of the manhole cooling water tank, the cooling water discharge pipe end is located inside the manhole cooling water tank, the cooling water discharge pipe end is inserted into the cooling water inlet and discharge pipe seat, the cooling water inlet and discharge pipe inlet end is provided with a cooling water inlet and discharge pipe thread, and the side wall of the cooling water inlet and discharge pipe is provided with a plurality of cooling water inlet and discharge pipe outlet holes.

6. The boiler tail manhole fire viewing lens cooler according to claim 1, characterized in that: The rear end face of the air curtain generator is provided with an annular air chamber, which is a hollow disc-shaped structure. An annular air chamber center hole is opened at the center position of the annular air chamber, and the annular air chamber center hole is coaxially arranged with the lens mounting hole. An annular air chamber inner cavity is formed inside the annular air chamber, and the annular air chamber inner cavity has an annular air chamber inner ring lower edge and an annular air chamber inner ring upper edge. The annular air chamber is connected to an air pipe, and the air pipe is bent and has an air pipe inlet and an air pipe outlet that are relatively arranged. The air pipe passes through the air pipe mounting hole of the air curtain generator at the front end face of the manhole cooling water tank.

7. The boiler tail manhole fire viewing lens cooler according to claim 1, characterized in that: The other side end surface of the manhole cooling water tank is covered with a heat-insulating asbestos sleeve, and one side of the heat-insulating asbestos sleeve is covered with a heat-insulating cotton shaping fastener.

8. The boiler tail manhole fire viewing lens cooler according to claim 7, characterized in that: The heat insulation cotton shaped fastener comprises a shaped fastener sleeve, the bottom of the shaped fastener sleeve is provided with a shaped fastener inner bottom, and the center position of the shaped fastener inner bottom is provided with a shaped fastener center hole; The heat-insulating asbestos sleeve comprises a heat-insulating asbestos sleeve sleeve, the bottom of which is provided with a heat-insulating asbestos sleeve inner bottom, and a heat-insulating asbestos sleeve central hole is opened at the central position of the heat-insulating asbestos sleeve inner bottom.

9. The boiler tail manhole fire viewing lens cooler according to claim 7, characterized in that: A lens protection top cover positioning ring, a lens protection cover insulation pad and a lens protection top cover are arranged in sequence between the manhole cooling water tank and the heat-insulating asbestos sleeve.

10. The boiler tail manhole fire viewing lens cooler according to claim 8, characterized in that: The lens protection top cover positioning ring comprises a positioning ring bowl and a positioning ring outer cone which are arranged in sequence, the positioning ring bowl is a hollow cylinder, the positioning ring outer cone is provided with a positioning ring straight groove extending to the middle position of the side wall of the positioning ring bowl, and the side wall of the positioning ring bowl is provided with a positioning ring outer thread; The lens protection cover heat insulation pad has a front conical groove and a rear conical groove which are arranged opposite to each other; The lens protection top cover comprises a top cover bowl and a top cover outer cone which are arranged in sequence. The top cover outer cone is a hollow cylinder. A top cover straight groove is provided at the lower end of the top cover bowl. A top cover outer thread is provided on the side wall of the top cover bowl.

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