Manhole bracket for membrane wall of boiler

Abstract

The utility model relates to the field of boiler equipment, and discloses a manhole bracket for a membrane wall of a boiler, which comprises a manhole door, an inner bracket, an outer bracket and a water inlet, the manhole door is arranged on the inner bracket; the inner bracket is arranged on the membrane wall; the outer bracket is arranged around the inner bracket and is separated from the membrane type wall; the water inlet is connected with the outer support, and water is injected through the water inlet, so that the closed space formed by the inner support and the outer support is filled with water. According to the manhole support on the boiler membrane type wall, the temperature of the boiler manhole support and the temperature of a manhole in operation can be effectively reduced, safety of personnel is guaranteed, follow-up management is not needed, and the manhole support is simple and convenient to use.

Description

Technical Field

[0001] The utility model relates to the field of boiler equipment, in particular to a manhole bracket used on a membrane wall of a boiler. Background Art

[0002] In order to meet the needs of boiler maintenance, an appropriate number of manholes are generally set on the boiler membrane wall for maintenance personnel to enter and exit.

[0003] Generally, the boiler manhole is installed on the boiler manhole bracket, which is welded to the boiler membrane wall. The inside of the bracket is poured with refractory insulation castable to isolate high-temperature flue gas.

[0004] Although the bracket is cast with refractory and insulating castables to isolate the high-temperature flue gas from direct contact with the manhole and manhole bracket, radiant heat from the boiler's high-temperature flue gas can still be transferred to the boiler manhole bracket and manhole. Furthermore, during boiler operation, the temperature of the water or steam flowing through the membrane wall can reach over 300 degrees Celsius, and the high thermal conductivity of the steel plate in the manhole bracket also transfers this high temperature to the manhole bracket and manhole.

[0005] Due to the above two reasons, the temperature near the manhole of a running boiler will exceed 50°C, which can easily cause burns. Utility Model Content

[0006] In order to make up for the above deficiencies, the utility model provides a manhole bracket for a membrane wall of a boiler.

[0007] To achieve the above objectives, the present invention provides the following technical solutions:

[0008] A manhole bracket for a boiler membrane wall comprises a manhole door, an inner bracket, an outer bracket and a water inlet; the manhole door is arranged on the inner bracket; the inner bracket is arranged on the membrane wall; the outer bracket is installed around the inner bracket and is separated from the membrane wall; the water inlet is connected to the outer bracket, and water is injected through the water inlet so that the enclosed space formed by the inner bracket and the outer bracket is filled with water.

[0009] Furthermore, the inner bracket is composed of a steel plate, which is welded on the membrane wall to form a closed space. The interior of the inner bracket is poured with a refractory heat-insulating castable to isolate high-temperature smoke.

[0010] Furthermore, the outer bracket is composed of steel plates, which are welded to the periphery of the inner bracket to form a closed space.

[0011] Furthermore, the water inlet is arranged on the top of the outer bracket.

[0012] Furthermore, the water inlet is composed of a steel pipe, a flange, a flange plate and a gasket, and the flange, gasket and flange plate are sequentially arranged on the steel pipe and fixed by bolts and nuts.

[0013] The utility model has the following beneficial effects: the utility model provides a manhole bracket on the membrane wall of the boiler, which can effectively reduce the temperature of the manhole bracket and the manhole of the boiler during operation, ensure the safety of personnel, and does not require subsequent management, which is simple and convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural diagram of the utility model;

[0015] Figure 2 for Figure 1 Side view of;

[0016] Figure 3 for Figure 1 A top view of

[0017] Description of the drawings: 1. Membrane wall; 2. Manhole door; 3. Inner bracket; 4. Outer bracket; 5. Water inlet. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0019] like Figure 1 、 Figure 2 and Figure 3 As shown, the utility model provides an embodiment: a manhole bracket for a boiler membrane wall, comprising a manhole door 2, an inner bracket 3, an outer bracket 4 and a water inlet 5; the manhole door 2 is arranged on the inner bracket 3; the inner bracket 3 is arranged on the membrane wall 1; the outer bracket 4 is installed around the inner bracket 3 and is separated from the membrane wall 1; the water inlet 5 is connected to the outer bracket 4, and water is injected through the water inlet 5 to fill the enclosed space formed by the inner bracket 3 and the outer bracket 4 with water.

[0020] The inner bracket 3 is composed of a steel plate, which is welded on the membrane wall 1 to form a closed space. The inner bracket 3 is poured with a refractory heat-insulating castable to isolate high-temperature smoke.

[0021] The outer bracket 4 is made of steel plates and is welded to the periphery of the inner bracket 3 to form a closed space.

[0022] The water inlet 5 is arranged on the top of the outer bracket 4 .

[0023] The water inlet 5 is composed of a steel pipe, a flange, a flange plate and a gasket, and the flange, gasket and flange plate are sequentially arranged on the steel pipe and fixed by bolts and nuts.

[0024] Since water has a large heat capacity, it can absorb the heat transmitted from the boiler flue gas and the membrane wall, thereby reducing the temperature of the manhole bracket and the manhole.

[0025] Compared with conventional boiler manhole brackets, the utility model has a simple structure, does not require the use of special materials, can effectively reduce the temperature of the boiler manhole bracket and the manhole during operation, ensure the safety of personnel, does not require management in the later stage, and will not increase the maintenance workload.

[0026] In the description of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0027] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of this utility model, "plurality" means two or more, unless otherwise specifically defined.

[0028] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, indirect connection through an intermediate medium, internal communication between two components, or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0029] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A manhole bracket for a boiler membrane wall, comprising a manhole door, an inner bracket, an outer bracket, and a water inlet; the manhole door is disposed on the inner bracket; the inner bracket is disposed on the membrane wall; the outer bracket is mounted around the inner bracket and is separated from the membrane wall; the water inlet is connected to the outer bracket, and water is injected through the water inlet to fill the enclosed space formed by the inner and outer brackets with water.

2. The manhole bracket for a membrane wall of a boiler according to claim 1, characterized in that: The inner bracket is composed of a steel plate, which is welded on the membrane wall to form a closed space. The interior of the inner bracket is poured with a refractory heat-insulating castable to isolate high-temperature smoke.

3. The manhole bracket for a membrane wall of a boiler according to claim 1, characterized in that: The outer bracket is composed of steel plates and is welded to the periphery of the inner bracket to form a closed space.

4. The manhole bracket for a membrane wall of a boiler according to claim 1, characterized in that: The water inlet is arranged on the top of the outer bracket.

5. The manhole bracket for a membrane wall of a boiler according to claim 1, characterized in that: The water inlet is composed of a steel pipe, a flange, a flange plate and a gasket. The flange, gasket and flange plate are arranged on the steel pipe in sequence and fixed by bolts and nuts.

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