Anti-scald device of double-metal steam trap

Abstract

The utility model relates to an anti-scald device of a double-metal steam trap. The anti-scald device comprises a heat insulation plate and a fixing piece. A plurality of heat dissipation through holes are formed in the heat insulation plate; the heat insulation plate is arranged on the outer surface of the double-metal steam trap and fixed through the fixing piece, and the heat insulation plate is used for reducing the risk that people are scalded due to the fact that the surface temperature of the double-metal steam trap is too high while normal operation of the double-metal steam trap is kept.

Description

TECHNICAL FIELD

[0001] The utility model relates to valve technical field especially relates to a kind of anti-scald device of bimetallic steam trap. BACKGROUND

[0002] Bimetallic steam trap is a kind of trap using the temperature sensing characteristic of bimetallic strip to realize the steam discharge function.In nuclear power plant, bimetallic steam trap is usually installed in high-temperature steam system, when high-temperature steam system starts, bimetallic steam trap opens fully to discharge a large amount of condensate and condensate gas in high-temperature steam system.When high-temperature steam system reaches saturation temperature, bimetallic strip in bimetallic steam trap will deform due to high temperature to pull the dry closing bimetallic steam trap.Bimetallic steam trap keeps closed before bimetallic strip cools down, as the temperature of bimetallic strip decreases, the valve opens a small gap to discharge non-condensable gas and condensate, and closes again when reaching saturation temperature.Due to the temperature sensing characteristic of bimetallic steam trap, if the valve body is installed with insulation, the surface of the valve will not be able to dissipate heat normally, which will result in the failure of the trap function of bimetallic steam trap.However, due to the high temperature of bimetallic steam trap body under the operating condition of high-temperature steam system, if the bimetallic steam trap body is not installed with insulation, it will cause the risk of personal scalding due to the high surface temperature of the bimetallic steam trap body. SUMMARY

[0003] The technical problem to be solved by the utility model is to provide a kind of heat insulation device of bimetallic steam trap to reduce the risk of personal scalding due to the high surface temperature of bimetallic steam trap while keeping the normal operation of bimetallic steam trap.

[0004] The technical scheme adopted by the utility model to solve its technical problem is: a kind of anti-scald device of bimetallic steam trap is provided, applied to bimetallic steam trap, the anti-scald device includes: heat insulation plate and fixing piece;

[0005] A plurality of heat dissipation through holes are provided on the heat insulation plate;

[0006] The heat insulation plate is arranged on the outer surface of the bimetallic steam trap and is fixed by the fixing piece.

[0007] Optionally, the plurality of heat dissipation through holes are equidistantly arranged on the heat insulation plate.

[0008] Optionally, the plurality of heat dissipation through holes have the same hole diameter, and the hole diameter is 6mm.

[0009] Optionally, the fixing piece includes at least two metal binding straps, and the two metal binding straps are arranged at the symmetrical two ends of the heat insulation plate to fix the heat insulation plate on the outer surface of the bimetallic steam trap.

[0010] Optionally, the metal binding belt comprises a fixed end and a stretching end.

[0011] The fixed end is attached to the outer surface of the heat insulation plate.

[0012] The stretching end is connected to the fixed end after wrapping around the outer surface of the heat insulation plate.

[0013] Optionally, the metal binding belt comprises a fixed end and a stretching end.

[0014] The stretching end is connected to the fixed end after sequentially passing through any through hole at the head end and any through hole at the tail end of the heat insulation plate.

[0015] Optionally, the heat insulation plate is curved in an arc shape with a radius of 110 mm.

[0016] Optionally, the heat insulation plate is a flexible piece, and the shape of the heat insulation plate is adjusted by cooperation between the heat insulation plate and the fixing piece to adapt to the bimetallic steam trap.

[0017] Optionally, the heat insulation plate is made of aluminum.

[0018] Optionally, the heat insulation plate has a length of 470 mm, a width of 400 mm, and a thickness of 1 mm.

[0019] The implementation of the present utility model has the following beneficial effects:

[0020] The heat insulation plate is provided with a plurality of heat dissipation through holes, and is arranged on the outer surface of the bimetallic steam trap and fixed by a fixing piece. In this way, the bimetallic steam trap can be cooled by the heat dissipation through holes on the heat insulation plate while being insulated by the heat insulation plate, so that the risk of personnel scalding due to the excessively high surface temperature of the bimetallic steam trap can be reduced while maintaining the normal operation of the bimetallic steam trap. BRIEF DESCRIPTION OF DRAWINGS

[0021] The present utility model will be further described below in combination with the drawings and examples, and the drawings are as follows:

[0022] Figure 1 is a schematic diagram of the overall structure of the heat insulation device of the bimetallic steam trap of the present utility model;

[0023] Figure 2 is a schematic diagram of the structure of the anti-scalding device of the present utility model;

[0024] Figure 3 is a schematic diagram of the planar expansion of the heat insulation plate of the present utility model. DETAILED DESCRIPTION

[0025] In order to have a clearer understanding of the technical features, objectives and effects of the present application, the specific embodiments of the present application will be described in detail with reference to the drawings. In the following description, it should be understood that the directions or positional relationships indicated by "front", "back", "upper", "lower", "left", "right", "vertical", "horizontal", "vertical", "horizontal", "top", "bottom", "inner", "outer", "head", "tail" and the like are based on the directions or positional relationships shown in the drawings, constructed and operated in a particular direction, and are only for the convenience of describing the present technical solution, and do not indicate that the indicated device or element must have a particular direction, therefore it cannot be understood as a limitation of the present application.

[0026] It should be further pointed out that, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection", "fixing", "setting" and the like should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements or the interaction relationship between two elements. When an element is referred to as "on" or "below" another element, the element can be "directly" or "indirectly" above the other element, or there can be one or more intermediate elements. The terms "first", "second", "third" and the like are only for the convenience of describing the present technical solution, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features, therefore, the features with "first", "second", "third" and the like can be explicitly or implicitly included one or more features. For ordinary skilled persons in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0027] In the following description, specific details are presented such as specific system structures, techniques, etc. in order to thoroughly understand the embodiments of the present application, but it should be clear to those skilled in the art that the present application can also be implemented in other embodiments without these specific details. In other cases, detailed description of well-known systems, devices, circuits and methods is omitted to avoid unnecessary details that hinder the description of the present application.

[0028] The present application provides a kind of bimetallic steam trap's heat insulating device, for reducing the risk of personnel scalding due to surface temperature of bimetallic steam trap being too high while maintaining normal operation of bimetallic steam trap.

[0029] Please refer to Figure 1As shown, the heat insulation device of the bimetallic steam trap in the embodiment comprises a heat insulation plate 1 and a fixing member 2. The heat insulation plate 1 is provided with a plurality of heat dissipation through holes 11. The heat insulation plate 1 is arranged on the outer surface of the bimetallic steam trap 3 and is fixed by the fixing member 2.

[0030] Specifically, the heat insulation plate 1 can be arranged on the outer surface of the bimetallic steam trap 3 and fully wrap around the bimetallic steam trap 3 to avoid direct contact of the staff with the high-temperature surface of the bimetallic steam trap 3, thereby reducing the risk of staff being scalded. In another implementation manner, the heat insulation plate 1 can only wrap around the surfaces of the bimetallic steam trap 3 that are easy to be touched by the staff. For example, since the bottom plane of the bimetallic steam trap 3 is close to the ground, the staff rarely directly contacts the bottom plane during normal operation, and thus the heat insulation plate 1 can be used to wrap around the top plane, the left plane and the right plane of the bimetallic steam trap 3 that are easy to be touched by the staff. The heat insulation plate 1 is fixed on the outer surface of the bimetallic steam trap 3 by the fixing member 2, and can be fixed in a detachable manner to facilitate the maintenance or replacement of the bimetallic steam trap 3. The heat insulation plate 1 is provided with a plurality of heat dissipation through holes 11, and the heat on the surface of the bimetallic steam trap 3 can be dissipated through the heat dissipation through holes 11, so that the temperature sensing property of the bimetallic steam trap 3 can be continuously realized. Thus, the bimetallic steam trap 3 can continuously operate by using the temperature sensing property while being insulated by the heat insulation plate 1 and being dissipated by the heat dissipation through holes 11.

[0031] In some embodiments, referring to Figure 3 As shown, the plurality of heat dissipation through holes 11 in the embodiment are equidistantly arranged on the heat insulation plate 1. Specifically, the heat dissipation through holes 11 can be equidistantly arranged to make each part of the bimetallic steam trap 3 have equal heat dissipation opportunities, thereby improving the heat dissipation uniformity of the bimetallic steam trap 3. In addition, the hole diameters of the plurality of heat dissipation through holes 11 can be all the same and the hole diameter can be 6 mm to further improve the heat dissipation uniformity of the bimetallic steam trap 3.

[0032] In some embodiments, referring to Figure 1 and Figure 2 As shown, the fixing member 2 in the embodiment comprises at least two metal binding straps 2, and the two metal binding straps 2 are arranged at the symmetrical two ends of the heat insulation plate 1 to fix the heat insulation plate 1 on the outer surface of the bimetallic steam trap 3.

[0033] Specifically, the binding belt is a kind of belt for bundling articles, with the characteristics of fast binding, good insulation, self-locking fastening and convenient use, which can be divided into metal binding belts and plastic binding belts according to different materials. The metal binding belt has good heat resistance and fastening property, and is suitable for use in high temperature environment, so the metal binding belt can be used to fix the heat insulation plate 1 in the embodiment. The material of the metal binding belt 2 can be 304 stainless steel or 316 stainless steel, which is not limited here. Two or more metal binding belts 2 can be used to fix the heat insulation plate 1 at the same time to improve the stability of the heat insulation plate 1, for example, one metal binding belt 2 is arranged at each end of the heat insulation plate 1 near the bimetallic steam trap 3 to fix the heat insulation plate 1.

[0034] In some embodiments, as shown in Figure 1 and Figure 2 , the metal binding belt 2 in the embodiment includes a fixed end 21 and a stretching end 22. The fixed end 21 is attached to the outer surface of the heat insulation plate 1. The stretching end 22 is connected to the fixed end 21 after wrapping around the outer surface of the heat insulation plate 1.

[0035] Specifically, the fastening degree of the metal binding belt 2 can be adjusted by adjusting the length of the stretching end 22 extending into the fixed end 21. The stretching end 22 can be attached to the outer surface of the heat insulation plate 1 and then extended into the fixed end 21 after wrapping around the outer surface of the heat insulation plate 1. By adjusting the length of the stretching end 22 extending into the fixed end 21, the fastening degree of the heat insulation plate 1 and the bimetallic steam trap 3 can be adjusted to achieve the fixation of the heat insulation plate 1. In another implementation, the stretching end 22 can also be connected to the fixed end 21 after sequentially passing through any hole at the head end and any hole at the tail end of the heat insulation plate 1. By adjusting the length of the stretching end 22 extending into the fixed end 21, the head end and the tail end of the heat insulation plate 1 can be contracted to reduce the movement space between the heat insulation plate 1 and the bimetallic steam trap 3, thereby achieving the fixation of the heat insulation plate 1.

[0036] In some embodiments, as shown in Figure 1 and Figure 2 , the heat insulation plate 1 in the embodiment is curved in a circular arc shape with a radius of 110 mm.

[0037] Specifically, the shape of the heat insulation plate 1 can be set as a curved circular arc shape to match the shape of the bimetallic steam trap 3 and the pipeline connected to the bimetallic steam trap 3. The radius of the circular arc of the heat insulation plate 1 can be determined according to the actual size of the bimetallic steam trap 3, for example, the radius of the circular arc of the heat insulation plate 1 in the embodiment is 110 mm, which is not limited here.

[0038] In some embodiments, as shown in Figure 1 and Figure 2As shown, the heat insulation plate 1 in the embodiment is a flexible member, and the shape of the heat insulation plate 1 is adjusted by cooperation of the heat insulation plate 1 and the fixing member 2 to adapt to the bimetallic steam trap 3.

[0039] Specifically, the flexible member with variable shape can be selected as the heat insulation plate 1, which is easy to deform under external force. In the embodiment, the shape of the heat insulation plate 1 is adjusted by cooperation of the heat insulation plate 1 and the fixing member 2 to match the outer surface of the bimetallic steam trap 3, so as to improve the versatility of the heat insulation plate 1, which can be applied to bimetallic steam traps 3 of different sizes or different working conditions.

[0040] In some embodiments, as shown in Figure 1 , Figure 2 and Figure 3 , the heat insulation plate 1 in the embodiment is an aluminum plate.

[0041] Specifically, since the aluminum material has small density, light weight, good ductility, plasticity and thermal conductivity, it can be used as the manufacturing material of the heat insulation plate 1. The aluminum material is a composite material composed of aluminum elements and other alloy elements, which can be divided into 1xxx series pure aluminum alloy, 2xxx series aluminum copper alloy, 3xxx series aluminum manganese alloy and 4xxx series aluminum silicon alloy according to different alloy components. In the embodiment, the heat insulation plate 1 can adopt a plate made of pure aluminum alloy or a plate made of aluminum copper alloy, and the specific aluminum material used is not limited here. In addition, the size of the heat insulation plate 1 can be: length 470mm, width 400mm and thickness 1mm.

[0042] It can be understood that the above embodiments only express the preferred embodiments of the present application, which are described in detail and specifically, but cannot be understood as a limitation on the scope of the present application patent; it should be pointed out that for ordinary skilled in the art, the above technical features can be freely combined without departing from the concept of the present application, and some deformations and improvements can be made, which belong to the protection scope of the present application; therefore, any equivalent transformation and modification within the scope of the claims of the present application shall belong to the scope of the claims of the present application.

Claims

1. An anti-scald device for a bimetallic steam trap, comprising: The anti-scald device is applied to a bimetallic steam trap, and comprises a heat insulation plate and a fixing member. A plurality of heat dissipation through holes are arranged on the heat insulation plate. The heat insulation plate is arranged on the outer surface of the bimetallic steam trap and is fixed by the fixing member.

2. The scald-prevention device of claim 1, wherein The plurality of heat dissipation through holes are equidistantly arranged on the heat insulation plate.

3. The scald-prevention device of claim 1, wherein The plurality of heat dissipation through holes have the same aperture and the aperture is 6 mm.

4. The scald-prevention device of claim 1, wherein The fixing member comprises at least two metal binding belts, and the two metal binding belts are arranged at symmetric two ends of the heat insulation plate to fix the heat insulation plate on the outer surface of the bimetallic steam trap.

5. The scald-prevention device of claim 4, wherein The metal binding belt comprises a fixed end and a stretching end. The fixed end is attached to the outer surface of the heat insulation plate. The stretching end is connected to the fixed end after winding around the outer surface of the heat insulation plate.

6. The scald-prevention device of claim 4, wherein The metal binding belt comprises a fixed end and a stretching end. The stretching end is connected to the fixed end after sequentially passing through any through hole at the first end and any through hole at the last end of the heat insulation plate.

7. The scald-prevention device of claim 1, wherein The heat insulation plate is a curved arc shape and the arc radius is 110 mm.

8. The scald-prevention device of claim 1, wherein The heat insulation plate is a flexible member, and the shape of the heat insulation plate is adjusted by cooperation of the heat insulation plate and the fixing member to adapt to the bimetallic steam trap.

9. The scald-prevention device of any one of claims 1-8, wherein, The heat insulation plate is an aluminum plate.

10. The scald-prevention device of any one of claims 1-8, wherein, The length of the heat insulation plate is 470 mm, the width is 400 mm, and the thickness is 1 mm.

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