High-temperature full-lining smoke valve

Abstract

The utility model provides a high-temperature full-lining smoke valve which comprises a valve body, and a first pouring layer is laid on the inner wall of the valve body. The valve plate is arranged in the valve body and comprises a hollow first cooling channel and a second pouring layer covering the outer surface of the valve plate; and the valve rods are radially installed at the two ends of the valve plate in a sectional mode and movably connected with the valve body, the outer ends of the valve rods extend out of the valve body, and the valve rods are axially provided with second cooling channels communicating with the first cooling channels. The cooling channel is additionally arranged in the valve plate and matched with the pouring layer covering the outer surface of the valve plate, the high-temperature resistance of the valve plate is improved, stable work of the valve plate is ensured, and the problem that the valve plate is prone to abrasion and deformation under the high-temperature working condition to affect the sealing effect is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of valves, in particular to a high-temperature fully lined smoke valve. Background Art

[0002] The butterfly valve is a valve that uses a disc-type opening and closing member to reciprocate about 90 degrees to open, close or adjust the flow of the medium. It has a simple structure, small size, easy and quick operation, and has good flow regulation function and closing and sealing characteristics. It has a very wide range of uses. For butterfly valves in high-temperature flue gas pipelines, not only high temperature resistance and corrosion resistance are required, but also good sealing characteristics and precise control capabilities.

[0003] Chinese patent CN208221619U discloses a high-temperature butterfly valve, which includes a valve body, a valve plate arranged in the valve body, a main shaft arranged on the valve plate, and a driving device for driving the main shaft to drive the valve plate to rotate, the valve body includes an outer shell, a heat-insulating felt laid on the inner side of the outer shell, and a refractory castable layer poured on the inner side of the heat-insulating felt; the valve plate is made of stainless steel; a cooling channel is arranged in the main shaft. The high-temperature butterfly valve of the utility model embodiment can ensure its heat resistance without water cooling by changing the structure and material selection of the valve body and the valve plate, and at the same time makes the high-temperature butterfly valve of the utility model have the advantages of small size, light weight and low water consumption.

[0004] However, this technical solution has the following problems: it only sets a heat-insulating layer and a refractory casting layer on the inner wall of the valve body, which does not provide sufficient protection for the valve plate, and the cooling channel only passes through the main shaft. During operation, the valve plate will be in a high-temperature state for a long time, causing it to be easily worn and deformed, affecting the sealing effect. Utility Model Content

[0005] The purpose of the utility model is to address the deficiencies of the prior art and provide a high-temperature fully lined smoke valve, which improves the high-temperature resistance of the valve plate by adding a cooling channel inside the valve plate in conjunction with a casting layer covering the outer surface of the valve plate, thereby ensuring its stable operation and solving the problem that the valve plate is prone to wear and deformation under high-temperature conditions, affecting the sealing effect.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A high-temperature fully lined smoke valve, comprising:

[0008] A valve body, wherein the inner wall of the valve body is paved with a first casting layer;

[0009] A valve plate, disposed in the valve body, comprising a hollow first cooling channel and a second casting layer covering the outer surface of the valve plate;

[0010] The valve stem is radially installed at both ends of the valve plate in sections, is movably connected to the valve body and the outer end extends out of the valve body, and the valve stem is axially provided with a second cooling channel connected to the first cooling channel.

[0011] Preferably, a plurality of baffles are arranged inside the first cooling channel, and the baffles divide the first cooling channel into a plurality of heat exchange zones.

[0012] As a preference, the baffle is provided with a plurality of flow holes connecting the corresponding heat exchange areas on both sides thereof.

[0013] Preferably, each of the heat exchange zones comprises two flow holes, one of which is an inlet and the other is an outlet.

[0014] As a preference, both ends of the valve stem are connected to external pipelines via rotary joints respectively, so as to connect the second cooling channel with the pipeline.

[0015] As a preference, the valve stem is also equipped with a swing arm, and the swing arm is arranged on the inner side of the rotary joint.

[0016] As a preference, it further comprises a driving unit, wherein the driving unit is arranged on one side of the valve body, and a connecting rod is installed at an output end of the driving unit.

[0017] Preferably, both ends of the connecting rod are rotationally connected to the swing arm and the output end of the driving unit respectively.

[0018] Preferably, a limiter for limiting the rotation angle of the swing arm is installed on the inner side of the swing arm.

[0019] Preferably, the first casting layer is provided with a sealing step corresponding to the valve plate, and the valve plate abuts against the sealing step when the valve plate is closed.

[0020] The beneficial effects of the utility model are:

[0021] (1) The utility model lays a first casting layer on the inner wall of the valve body and covers the second casting layer on the outer surface of the valve plate, so that the butterfly valve can effectively resist the influence of high temperature environment. The first cooling channel and the second cooling channel designed in the valve plate and the valve stem respectively help to reduce the internal temperature of the valve, avoid valve damage or performance degradation caused by overheating, and ensure the stable operation of the valve.

[0022] (2) The utility model divides the first cooling channel into multiple heat exchange zones by means of a baffle plate disposed inside the first cooling channel, and opens flow holes to realize one-way exchange of fluids between different heat exchange zones, thereby extending the flow path of the fluid in the channel, improving the heat exchange efficiency and cooling effect, and enabling the valve to have a higher temperature tolerance.

[0023] (3) The utility model provides a rotary joint to connect with the external pipeline, thereby ensuring the continuous flow of cooling medium when the valve rotates, circulating cooling water, and facilitating the installation and removal of the pipeline.

[0024] In summary, the utility model has the advantages of stable operation, strong heat resistance, and convenient installation and maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0026] Figure 2 This is a schematic diagram of the internal structure of the valve plate of the utility model;

[0027] Figure 3 It is a cross-sectional schematic diagram of the utility model;

[0028] Figure 4 For this utility model Figure 3 The local enlarged schematic diagram of point I in the middle;

[0029] Figure 5 It is a left-side structural schematic diagram of the utility model. DETAILED DESCRIPTION

[0030] 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 of 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.

[0031] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" 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 utility model and simplifying the description, rather than indicating or implying that the equipment or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0032] Example

[0033] like Figure 1-5 As shown, this embodiment provides a high-temperature fully lined smoke valve, including: a valve body 1, the inner wall of the valve body 1 is paved with a first casting layer 11; a valve plate 2, arranged in the valve body 1, comprising a hollow first cooling channel 21 and a second casting layer 22 covering the outer surface of the valve plate 2; a valve stem 3, radially installed at both ends of the valve plate 2 in a segmented manner, which is movably connected to the valve body 1 and the outer end extends out of the valve body 1, the valve stem 3 is axially provided with a second cooling channel 31 connected to the first cooling channel 21, and the valve stem 3 is sealed and connected to the valve body 1.

[0034] By laying the first casting layer 11 on the inner wall of the valve body 1 and covering the second casting layer 22 on the outer surface of the valve plate 2, the butterfly valve can effectively resist the influence of high temperature environment and the maximum tolerance temperature is 1200°C. The first cooling channel 21 and the second cooling channel 31 designed in the valve plate 2 and the valve stem 3 respectively help to reduce the internal temperature of the valve, avoid valve damage or performance degradation caused by overheating, and ensure the stable operation of the valve.

[0035] like Figure 1-3 As shown, a plurality of baffles 211 are arranged inside the first cooling channel 21, and the baffles 211 divide the first cooling channel 21 into a plurality of heat exchange zones 212. The baffles 211 block and restrict the flow of cooling water. The baffle 211 is provided with a plurality of flow holes 213, which connect the corresponding heat exchange zones 212 on both sides thereof, and the flow direction of the fluid through the flow holes 213 remains unchanged. Each of the heat exchange zones 212 includes two flow holes 213, and one of the flow holes 213 is an inlet and the other is an outlet.

[0036] The baffle 211 disposed inside the first cooling channel 21 divides the channel into a plurality of heat exchange zones 212, and flow holes 213 are provided to realize one-way exchange of fluid between different heat exchange zones 212, thereby extending the flow path of the fluid in the channel and improving heat exchange efficiency and cooling effect.

[0037] like Figure 1 As shown, both ends of the valve stem 3 are connected to an external pipeline 5 through a rotary joint 4 , respectively, so as to connect the second cooling channel 31 with the pipeline 5 .

[0038] By providing a rotary joint 4 connected to an external pipeline 5, continuous circulation of the cooling medium is ensured when the valve rotates, and cooling water is circulated, and installation and disassembly of the pipeline is also facilitated.

[0039] like Figure 1 , 5As shown, the valve stem 3 is also equipped with a swing arm 6, which is arranged inside the rotary joint 4, and the valve plate 2, valve stem 3 and swing arm 6 rotate synchronously. It also includes a drive unit 7, which is arranged on one side of the valve body 1, and a connecting rod 8 is installed at its output end. The two ends of the connecting rod 8 are rotatably connected to the swing arm 6 and the output end of the drive unit 7 respectively. Remote control and automatic operation of the valve are realized, and the convenience and efficiency of operation are improved.

[0040] like Figure 1 , 5 As shown, a limiter 9 for limiting the rotation angle of the swing arm 6 is installed inside the swing arm 6. When the swing arm 6 contacts the limiter 9, the valve plate 2 is in a fully open state.

[0041] like Figure 3 , 4 As shown, the first casting layer 11 is provided with a sealing step 12 corresponding to the valve plate 2, and the valve plate 2 abuts against the sealing step 12 when closed. When viewed from the side, the sealing step 12 is provided on the valve plate 2 in a clockwise or counterclockwise direction, which helps to enhance the sealing performance when the valve is closed.

[0042] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A high temperature fully lined smoke valve, characterized in that: include: A valve body, wherein the inner wall of the valve body is paved with a first casting layer; A valve plate, disposed in the valve body, comprising a hollow first cooling channel and a second casting layer covering the outer surface of the valve plate; The valve stem is radially installed at both ends of the valve plate in sections, is movably connected to the valve body and the outer end extends out of the valve body, and the valve stem is axially provided with a second cooling channel connected to the first cooling channel.

2. A high temperature fully lined smoke valve according to claim 1, characterized in that: A plurality of baffles are arranged inside the first cooling channel, and the baffles divide the first cooling channel into a plurality of heat exchange zones.

3. A high temperature fully lined smoke valve according to claim 2, characterized in that: The baffle is provided with a plurality of flow holes, which are connected to the corresponding heat exchange areas on both sides thereof.

4. A high temperature fully lined smoke valve according to claim 3, characterized in that: Each of the heat exchange areas includes two flow holes, one of which is an inlet and the other is an outlet.

5. A high temperature fully lined smoke valve according to claim 1, characterized in that: Both ends of the valve stem are connected to external pipelines through rotary joints respectively, so as to connect the second cooling channel with the pipeline.

6. A high temperature fully lined smoke valve according to claim 5, characterized in that: The valve stem is also equipped with a swing arm, which is arranged inside the rotary joint.

7. A high temperature fully lined smoke valve according to claim 6, characterized in that: It also includes a driving unit, which is arranged on one side of the valve body and has a connecting rod installed at its output end.

8. A high temperature fully lined smoke valve according to claim 7, characterized in that: The two ends of the connecting rod are rotatably connected to the swing arm and the output end of the driving unit respectively.

9. A high temperature fully lined smoke valve according to claim 6, characterized in that: A limiting member for limiting the rotation angle of the swing arm is installed on the inner side of the swing arm.

10. A high temperature fully lined smoke valve according to claim 1, characterized in that: The first casting layer is provided with a sealing step corresponding to the valve plate, and the valve plate abuts against the sealing step when the valve plate is closed.

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