CN220082292U - Cooling device - Google Patents

Abstract

The utility model provides a cooling device, in particular to a cooling device for a valve shaft of a high-temperature-resistant valve. The cooling device comprises a cavity, an upper end plate, a lower end plate, an air inlet and an air outlet, wherein the upper end plate and the lower end plate are respectively arranged at two ends of the cavity and form a containing space with the cavity; the cavity comprises an inner cavity and an outer cavity which are sequentially arranged from inside to outside, and the inner cavity is communicated with the outer cavity; the air inlet and the air outlet are both arranged on the cavity, the air inlet is communicated with the inner cavity, and the air outlet is communicated with the outer cavity. The cooling device can effectively reduce the temperature of the valve shaft area through the flow of cooling gas in the cavity, can protect the valve shaft, isolate heat conduction, reduce the thermal expansion of the valve shaft, avoid the bending and deformation of the valve shaft, reduce the failure rate of the high-temperature valve and prolong the service life of the high-temperature valve.

Description

Cooling device

Technical Field

The utility model relates to a cooling device, in particular to a cooling device for a valve shaft of a high-temperature-resistant valve.

Background

In the environment protection industry, the medium temperature in a high-temperature flue in a heat accumulating type incinerator/catalytic oxidation furnace (RTO/RCO for short) system can reach 1100 ℃ at the highest, and a high-temperature valve is needed. At present, in an RTO/RCO system, a valve shaft of a high-temperature valve is often deformed by heat, the valve shaft is bent and deformed to cause valve failure, valve blocking and failure are seriously caused by thermal expansion of the valve shaft, the stability of system operation is seriously affected, and great potential safety hazards exist.

In the prior art, cooling fins and heat insulation sheets are added at two ends of a valve shaft generally, and the technology can only reduce the temperature at two ends of the valve shaft, isolate the heat conduction of the valve shaft and cannot cool and protect the heated part in the middle of the valve shaft. Especially under the high temperature condition of 850 ℃ to 1100 ℃, the problems of clamping and the like caused by bending deformation and larger thermal expansion of the valve shaft cannot be avoided in the prior art.

In view of the foregoing, it is desirable to design a cooling device that protects the valve shaft and isolates heat transfer.

Disclosure of Invention

The utility model aims to provide a cooling device which can effectively reduce the temperature of a valve shaft area, protect the valve shaft, isolate heat conduction, reduce the thermal expansion of the valve shaft, avoid the bending and deformation of the valve shaft, reduce the failure rate of a high-temperature valve and prolong the service life of the high-temperature valve.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the cooling device comprises a cavity, an upper end plate, a lower end plate, an air inlet and an air outlet, wherein the upper end plate and the lower end plate are respectively arranged at two ends of the cavity and form a containing space with the cavity; the cavity comprises an inner cavity and an outer cavity which are sequentially arranged from inside to outside, and the inner cavity is communicated with the outer cavity; the air inlet and the air outlet are both arranged on the cavity, the air inlet is communicated with the inner cavity, and the air outlet is communicated with the outer cavity.

Further, a plurality of exhaust holes are formed in the side wall of the inner cavity, and the inner cavity is communicated with the outer cavity through the plurality of exhaust holes.

The high-temperature valve shaft in the RTO/RCO system can be fixedly arranged in the inner cavity, cooling gas enters the inner cavity from the air inlet, is uniformly distributed to the outer cavity through the air exhaust hole and is finally exhausted from the air exhaust hole, and the cooling of the whole valve shaft is realized in the process. The device simple structure can effectively reduce the regional temperature of valve shaft, avoids the valve shaft crooked, warp, promotes valve shaft life. Meanwhile, the cavity comprises an inner cavity and an outer cavity which are sequentially arranged from inside to outside, so that the cavity has higher torsion resistance and bending resistance.

Further, the exhaust holes are uniformly and alternately arranged on the side wall of the inner cavity.

The even setting of exhaust hole can guarantee that cooling gas evenly distributed be in interior cavity with in the outer cavity, no dead angle reduces valve shaft temperature, guarantees valve shaft intensity. In addition, through will the exhaust hole carries out the staggered arrangement, can increase cooling gas flow resistance, extension cooling gas is in the internal flow time of inner chamber avoids getting into the cooling gas of inner chamber directly passes through fast the exhaust hole gets into outer cavity, makes cooling gas and outside high temperature gas heat transfer more abundant, promotes cooling gas cooling protection efficiency, promotes the cooling effect.

Further, the air inlet and the air outlet are respectively provided with a valve for controlling the pipe diameter of the air inlet and the air outlet.

Through adjusting the valve of air inlet and/or gas vent, can change the pipe diameter of air inlet and/or gas vent, and then change the inlet and/or exhaust pressure and the speed of cooling gas, satisfy the valve shaft cooling demand under different operating modes. Because the principle of expend with heat and contract with cold, in the early stage of admitting air, the control the pipe diameter of air inlet be less than the pipe diameter of gas vent, but later stage in order to control the gas velocity of flow in the cavity, can adjust and control the pipe diameter of air inlet is greater than the pipe diameter of gas vent, consequently, set up the valve that can control self pipe diameter on air inlet and the gas vent respectively, play key effect to the cooling demand under the different operating modes.

Further, the air inlet is arranged at one end of the cavity close to the upper end plate, and the air outlet is arranged at one end of the cavity close to the lower end plate.

Therefore, the cooling device can realize the up-in and down-out of the cooling gas, further increases the flowing distance of the cooling gas in the cooling device, and improves the cooling effect.

Further, the upper end plate comprises a first plate, a first heat insulation pad and a second plate which are fixedly connected in sequence from top to bottom; the lower end plate comprises a third plate, a second heat insulation pad and a fourth plate which are fixedly connected in sequence from top to bottom.

Under high temperature environment, upper end plate with thermal expansion also can take place for lower end plate, through will upper end plate sets up to top-down fixed connection's first panel in proper order, first heat insulating mattress and second panel structure, can pass through first heat insulating mattress effectively the isolated first panel with heat conduction between the second panel, and then isolated high temperature valve and the heat conduction between the executive device, protection valve executive device. Similarly, the lower end plate has the same technical effects.

Further, the cavity is 310S stainless steel.

Further, the upper end plate and the lower end plate are welded to the cavity.

Compared with the prior art, the cooling device provided by the utility model has the advantages that the structure is simple, the cost is reduced, the temperature of a valve shaft area can be effectively reduced, the valve shaft can be protected, the heat conduction can be isolated, the thermal expansion of the valve shaft is reduced, the bending and deformation of the valve shaft are avoided, the failure rate of the high-temperature valve is reduced, and the service life of the high-temperature valve is prolonged.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present utility model and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view of a cooling device according to the present utility model;

FIG. 2 is a schematic cross-sectional view of a cooling device of the present utility model;

FIG. 3 is a schematic view of an air intake of a cooling device according to the present utility model;

fig. 4 is a schematic diagram of a cooling device according to the present utility model.

Reference numerals illustrate:

1. a cavity; 2. an upper end plate; 3. a lower end plate; 4. an air inlet; 5. an exhaust port; 6. an exhaust hole; 11. an inner cavity; 12. an outer cavity.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.

A cooling device, see fig. 1, comprises a cavity 1, an upper end plate 2, a lower end plate 3, an air inlet 4 and an air outlet 5. Wherein, upper end plate 2 and lower end plate 3 weld respectively in the both ends of cavity 1 to constitute the accommodation space with cavity 1. The cavity 1 comprises an inner cavity 11 and an outer cavity 12 which are sequentially arranged from inside to outside, and a plurality of exhaust holes 6 are formed in the side wall of the inner cavity 11, and the inner cavity 11 is communicated with the outer cavity 12 through the exhaust holes 6. Further, an intake port 4 and an exhaust port 5 are provided on the chamber 1. The intake port 4 communicates with the inner chamber 11 (see fig. 2) and the exhaust port 5 communicates with the outer chamber 12.

In the working process, referring to fig. 3, the high-temperature valve shaft in the rto/RCO system can be fixedly arranged in the inner cavity 11, cooling gas enters the inner cavity 11 from the air inlet 4, is uniformly distributed to the outer cavity 12 through the air exhaust hole 6, and is finally exhausted from the air exhaust hole 5, so that the cooling of the whole valve shaft is realized in the process. The device simple structure can effectively reduce the regional temperature of valve shaft, avoids the valve shaft crooked, warp, promotes valve shaft life. Meanwhile, the cavity 1 comprises an inner cavity 11 and an outer cavity 12 which are sequentially arranged from inside to outside, so that the cavity 1 has higher torsion resistance and bending resistance, and the stability of the whole device is improved.

Further, referring to fig. 4, in this embodiment, a plurality of exhaust holes 6 are uniformly staggered on the side wall of the inner cavity 11. Through carrying out even setting with the exhaust hole, can guarantee that cooling gas evenly distributed is in interior cavity 11 and outer cavity 12, can not have the dead angle under the high temperature environment and reduce valve shaft temperature, guarantee valve shaft intensity. In addition, a plurality of exhaust holes 6 are arranged in a staggered mode, but not in a pairwise mode, the arrangement mode can increase the flow resistance of the cooling gas, prolong the flowing time of the cooling gas in the inner cavity 11, prevent the cooling gas entering the inner cavity 11 from directly and quickly entering the outer cavity 12 through the exhaust holes 6, enable the cooling gas to exchange heat with external high-temperature gas more fully, improve the cooling gas cooling protection efficiency and improve the cooling effect.

Further, the air inlet 4 and the air outlet 5 are respectively provided with valves (not shown in the drawings) for controlling the pipe diameters of the air inlet and the air outlet. Through adjusting the valve of the air inlet 4 and/or the air outlet 5, the pipe diameter of the air inlet 4 and/or the air outlet 5 can be changed, so that the inlet pressure and/or the exhaust pressure and the speed of cooling gas can be changed, and the valve shaft cooling requirements under different working conditions can be met. In this embodiment, through adjusting the valve for the pipe diameter of air inlet 4 is less than the pipe diameter of gas vent 5, because cooling gas can rise through the temperature after cavity 1 cools down the valve shaft, lead to the exhaust cooling gas temperature of gas vent 5 department to be higher than the cooling gas temperature that air inlet 4 department lets in, exhaust with the great gas vent of pipe diameter this moment, can improve exhaust efficiency. In other embodiments of the present utility model, by adjusting the valve, the pipe diameter of the air inlet 4 is larger than the pipe diameter of the air outlet 5, for example, the ratio of the pipe diameter of the air inlet 4 to the pipe diameter of the air outlet 5 is 5:1, so that the flow rate of the cooling air in the cavity 1 can be increased under the condition of constant air inlet pressure, more heat can be rapidly taken away under the condition of the same flowing area, and the cooling efficiency is improved.

Further, an air inlet 4 is provided at one end of the cavity 1 near the upper end plate 2, and an air outlet 5 is provided at one end of the cavity 1 near the lower end plate 3. Therefore, the upper inlet and the lower outlet of the cooling gas are realized, the flowing distance of the cooling gas in the cooling device is further increased, and the cooling effect is improved.

Further, in this embodiment, the upper end plate 2 includes a first plate, a first heat insulation pad, and a second plate fixedly connected in sequence from top to bottom; the lower end plate 3 comprises a third plate, a second heat insulation pad and a fourth plate (not shown in the figure) which are fixedly connected in sequence from top to bottom.

Under high temperature environment, upper end plate 2 and lower end plate 3 also can take place thermal expansion, through setting up upper end plate 2 into top-down fixed connection's first panel in proper order, first heat insulating mattress and second panel structure, can effectively keep apart the heat conduction between first panel and the second panel through first heat insulating mattress, and then keep apart the heat conduction between high temperature valve and the executive device, protection valve executive device. The same technical effect is achieved by the lower end plate 3.

Further, in this embodiment, the cavity 1 may be made of 310S stainless steel, or may be made of other high temperature resistant materials, so as to meet performance requirements in terms of strength, heat resistance, etc. of the cooling device.

In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the spirit and scope of the utility model as defined by the appended claims and their equivalents.

Claims (8)

1. The cooling device is characterized by comprising a cavity, an upper end plate, a lower end plate, an air inlet and an air outlet, wherein the upper end plate and the lower end plate are respectively arranged at two ends of the cavity and form a containing space with the cavity; the cavity comprises an inner cavity and an outer cavity which are sequentially arranged from inside to outside, and the inner cavity is communicated with the outer cavity; the air inlet and the air outlet are both arranged on the cavity, the air inlet is communicated with the inner cavity, and the air outlet is communicated with the outer cavity.

2. The cooling device according to claim 1, wherein a plurality of exhaust holes are provided on a side wall of the inner cavity, and the inner cavity communicates with the outer cavity through the plurality of exhaust holes.

3. The cooling device of claim 2, wherein the plurality of vent holes are uniformly staggered on the side wall of the inner cavity.

4. A cooling device according to claim 3, wherein the air inlet and the air outlet are each provided with a valve controlling the pipe diameter thereof.

5. The cooling device of claim 4, wherein the air inlet is disposed at an end of the cavity adjacent the upper end plate and the air outlet is disposed at an end of the cavity adjacent the lower end plate.

6. The cooling device of claim 5, wherein the upper end plate comprises a first plate, a first heat insulating pad and a second plate fixedly connected in sequence from top to bottom; the lower end plate comprises a third plate, a second heat insulation pad and a fourth plate which are fixedly connected in sequence from top to bottom.

7. The cooling device of claim 6, wherein the cavity is 310S stainless steel.

8. The cooling device of claim 7, wherein the upper end plate and the lower end plate are both welded to the cavity.