Runner heat insulation structure of ultra-high-temperature valve

Abstract

The utility model discloses a runner heat insulation structure of an ultra-high temperature valve, and relates to the field of valves, the runner heat insulation structure comprises a valve body and a heat insulation assembly arranged in the valve body, the heat insulation assembly comprises a connecting sleeve arranged in the valve body in a penetrating mode; the spacer bush is arranged in the connecting sleeve in a penetrating manner; the outer sleeve is arranged in the spacer bush in a penetrating manner; the inner sleeve is arranged in the outer sleeve in a penetrating manner; heat insulation cotton is filled between the inner wall face of the valve body and the connecting sleeve, heat insulation coatings are arranged between the inner sleeve and the outer sleeve and on the inner wall face of the valve body respectively, and the heat insulation valve has the advantage of being good in heat insulation effect.

Description

Technical Field

[0001] The utility model relates to the field of valves, in particular to a flow channel heat insulation structure of an ultra-high temperature valve. Background Art

[0002] In the prior art, valves are usually insulated by installing insulation materials in the flow channel in a high temperature environment. For valves with a medium temperature ≤ 1000°C, the insulation material can be aluminum silicate fiber material (temperature resistant to 1500°C). However, for valves with a medium temperature of 2000°C, this insulation material is not applicable. Utility Model Content

[0003] In order to overcome the shortcomings of the background technology, the utility model provides a flow channel heat insulation structure of an ultra-high temperature valve with good heat insulation effect.

[0004] The technical solution adopted by the utility model is: a flow channel heat insulation structure of an ultra-high temperature valve, comprising a valve body and a heat insulation component arranged in the valve body, wherein the heat insulation component comprises:

[0005] A connecting sleeve, which is inserted into the valve body;

[0006] A spacer sleeve, which is inserted into the connecting sleeve;

[0007] An outer sleeve, which is inserted into the spacer;

[0008] An inner sleeve, which is inserted into the outer sleeve;

[0009] The space between the inner wall of the valve body and the connecting sleeve is filled with heat insulation cotton, and the space between the inner sleeve and the outer sleeve and the inner wall of the valve body are respectively provided with heat insulation coatings.

[0010] The inner sleeve, outer sleeve and spacer sleeve all adopt segmented structures, and multiple segments of the inner sleeve are connected by mortise and tenon joints.

[0011] The end of the valve body is provided with a fixedly connected cover plate, and the cover plate material is Nb521 or polycrystalline pure tungsten.

[0012] The material of the inner sleeve is TaW10.

[0013] The outer sleeve is made of metallurgical ceramic Si3N4.

[0014] The spacer sleeve is a molded ZrO2 ceramic sleeve.

[0015] The connecting sleeve is made of F304 austenitic stainless steel pipe, and a plurality of vent holes are arranged on its circumferential wall surface.

[0016] The heat insulating cotton is made of aluminum silicate fiber cloth.

[0017] The inner wall surface of the valve body is provided with a fixedly connected lifting ear, the outer circumference of the thermal insulation coating is sleeved with a split circular ring, and the split circular ring is fixed with a connecting plate fixedly connected to the lifting ear.

[0018] The beneficial effects of the utility model are as follows: the technical solution arranges an inner sleeve, an outer sleeve and a spacer sleeve in sequence in the flow channel in the valve body, and a heat insulation coating is respectively provided between the inner sleeve 5 and the outer sleeve 4 and on the inner wall surface of the valve body 1. In addition, heat insulation cotton is filled between the inner wall surface of the valve body 1 and the connecting sleeve 2, which can greatly improve the heat insulation effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the flow channel insulation structure of the ultra-high temperature valve according to an embodiment of the utility model.

[0020] Figure 2 for Figure 1 Schematic diagram of the cross section of AA. DETAILED DESCRIPTION

[0021] The following is a further description of the embodiments of the present invention in conjunction with the accompanying drawings:

[0022] As shown in the figure, the flow channel insulation structure of the ultra-high temperature valve includes a valve body 1 and an insulation component arranged in the valve body 1, and the insulation component includes:

[0023] The inner sleeve 5 is inserted into the outer sleeve 4; the material of the inner sleeve 5 is TaW10, which is not only resistant to high temperatures of 2100°C, but also resistant to high-temperature and high-speed fluid erosion;

[0024] An outer sleeve 4 is inserted into the spacer 3. The outer sleeve 4 is made of metallurgical ceramic Si3N4, which can withstand a maximum temperature of 1500°C, has a hardness of HRA 92, a bending strength of 1200MPa, a compressive strength of 2800MPa, and an ideal heat insulation effect. Through heat insulation, the temperature can be reduced to below 400°C;

[0025] The spacer sleeve 3 is inserted into the connecting sleeve 2. The spacer sleeve 3 adopts a molded ZrO2 ceramic sleeve, which is a lightweight refractory energy-saving material with good high-temperature stability and a thermal conductivity of 0.055. It has no volatilization and loss at high temperatures. Through thermal insulation, the temperature can be reduced to below 100°C.

[0026] A connecting sleeve 2 is inserted into the valve body 1; the connecting sleeve 2 is made of F304 austenitic stainless steel pipe, and a plurality of vent holes (not shown) are arranged on its circumferential wall;

[0027] The inner wall of the valve body 1 and the connecting sleeve 2 are filled with heat insulation cotton 6, which is made of aluminum silicate fiber cloth. The outer surface of the connecting sleeve is wrapped with two layers of aluminum silicate fiber cloth for further heat insulation. The inner sleeve 5 and the outer sleeve 4 and the inner wall of the valve body 1 are respectively provided with a heat insulation coating 7, which can withstand a high temperature of 2100°C, has a heat resistance coefficient of 0.03, and will not burn. The coating is designed to be 5mm thick during construction and needs to be brushed more than 8 times; after brushing, the temperature can be reduced by 700°C-800°C; the inner wall of the valve body flow channel is then brushed with 1mm thick ZS-1 with a temperature resistance of 700°C. This ensures that the surface temperature of the valve body is lower than 80°C, and the heat loss is small; the entire insulation component has the advantage of good insulation effect.

[0028] The inner sleeve 5, the outer sleeve 4 and the spacer 3 all adopt a segmented structure, and the multiple segments of the inner sleeve 5 are connected by mortise and tenon joints. The inner sleeve 5, the outer sleeve 4 and the spacer are installed in the connecting sleeve for easy assembly.

[0029] The end of the valve body 1 is provided with a fixedly connected cover plate 8, and the material of the cover plate 8 is Nb521 or polycrystalline pure tungsten; the cover plate is fixed to the end of the valve body by hexagon socket screws, which is stable and firm.

[0030] The inner wall surface of the valve body 1 is provided with a fixedly connected lifting ear 9, the outer circumference of the thermal insulation coating 7 is sleeved with a split ring 10, and the split ring 10 is fixed with a connecting plate 11 fixedly connected to the lifting ear 9; it has the advantage of preventing the inner sleeve from loosening due to vibration and improving the anti-vibration effect.

[0031] In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships 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 operate in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0032] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances. In addition, in the description of the present utility model, unless otherwise specified, "plurality" means two or more.

[0033] Technical personnel should note: Although the utility model has been described according to the above specific implementation methods, the utility model concept is not limited to this utility model. Any modification using the utility model concept will be included in the scope of protection of this patent.

Claims

1. A flow channel heat insulation structure of an ultra-high temperature valve, comprising a valve body (1) and a heat insulation component arranged in the valve body (1), characterized in that: The thermal insulation assembly comprises: A connecting sleeve (2) which is inserted into the valve body (1); A spacer sleeve (3) which is inserted into the connecting sleeve (2); An outer sleeve (4) which is inserted into the spacer sleeve (3); An inner sleeve (5) which is inserted into the outer sleeve (4); The space between the inner wall surface of the valve body (1) and the connecting sleeve (2) is filled with heat insulation cotton (6), and the space between the inner sleeve (5) and the outer sleeve (4) and the inner wall surface of the valve body (1) are respectively provided with heat insulation coatings (7).

2. The flow channel insulation structure of the ultra-high temperature valve according to claim 1 is characterized in that: The inner sleeve (5), the outer sleeve (4) and the spacer sleeve (3) all adopt a segmented structure, and the multiple segments of the inner sleeve (5) are connected by mortise and tenon joints.

3. The flow channel insulation structure of the ultra-high temperature valve according to claim 1 is characterized in that: The end of the valve body (1) is provided with a cover plate (8) which is fixedly connected thereto, and the material of the cover plate (8) is Nb521 or polycrystalline pure tungsten.

4. The flow channel insulation structure of the ultra-high temperature valve according to claim 1 is characterized in that: The material of the inner sleeve (5) is TaW10.

5. The flow channel insulation structure of the ultra-high temperature valve according to claim 1 is characterized in that: The outer sleeve (4) is made of metallurgical ceramic Si3N4.

6. The flow channel insulation structure of the ultra-high temperature valve according to claim 1, characterized in that: The spacer (3) is a molded ZrO2 ceramic sleeve.

7. The flow channel insulation structure of the ultra-high temperature valve according to claim 1 is characterized in that: The connecting sleeve (2) is made of an F304 austenitic stainless steel tube, and a plurality of vent holes are provided on its circumferential wall surface.

8. The flow channel insulation structure of the ultra-high temperature valve according to claim 1, characterized in that: The heat insulating cotton (6) is made of aluminum silicate fiber cloth.

9. The flow channel insulation structure of the ultra-high temperature valve according to claim 1, characterized in that: The inner wall surface of the valve body (1) is provided with a fixedly connected lifting ear (9), the outer circumference of the thermal insulation coating (7) is sleeved with a split circular ring (10), and the split circular ring (10) is fixedly provided with a connecting plate (11) fixedly connected to the lifting ear (9).

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