Annealing furnace sealing groove cooling structure

Abstract

The utility model belongs to the technical field of sealing grooves, and particularly relates to an annealing furnace sealing groove cooling structure which comprises a heat conducting plate, the heat conducting plate is arranged along a frame of an annealing furnace sealing door, an annular sealing groove is formed in the heat conducting plate, and a sealing strip is embedded in the sealing groove. Two cooling water channels distributed along the two sides of the sealing groove are formed in the heat conduction plate, have different cooling water flow directions and are both communicated with the sealing groove. The cooling water channels are arranged on the two sides of the sealing groove respectively and used for reducing the temperature around the sealing strip, the sealing strip can keep a good working state, the two cooling water channels are arranged in the mode that cooling water flows in the opposite directions, the water channels with the head-tail temperature difference can make up and balance each other, the temperature of the sealing strip can be effectively reduced, and the service life of the sealing strip is prolonged. And deformation caused by large temperature difference of all parts of the sealing strip can be avoided, and the sealing effect of the sealing strip is guaranteed.

Description

Technical Field

[0001] The utility model belongs to the technical field of sealing grooves, and particularly relates to a cooling structure for the sealing groove of an annealing furnace. Background Technique

[0002] Annealing is a metal heat treatment process, which means heating the metal slowly to a certain temperature, maintaining for a sufficient time, and then cooling at an appropriate speed. Generally speaking, annealing is a heat treatment process for materials, including metal materials and non-metal materials. Moreover, the purposes of annealing of new materials are also the same and different from those of traditional metal annealing.

[0003] An annealing furnace seal cooling circulation system disclosed in Patent CN217459494U includes a furnace platform and a mounting base plate. The mounting base plate is in a disc shape and is horizontally arranged. A mounting hole vertically penetrates through the center of the upper surface of the mounting base plate. The furnace platform is embedded in the mounting hole. An annular sealing groove is further provided on the upper surface of the mounting base plate. The annular sealing groove surrounds the furnace platform. Therefore, the annular sealing groove is close to the outer ring edge of the mounting base plate. An inlet and an outlet are further provided on the mounting base plate. A cooling flow channel is further provided in the mounting base plate. One end of each cooling flow channel is connected to the inlet. The other ends of all the cooling flow channels are connected to the outlet after surrounding the furnace platform. All the cooling flow channels are close to the annular sealing groove. The advantage of adopting the utility model is that the device has a simple structure, can set a cooling flow channel in the mounting base plate, and uses water flow to take out the heat of the mounting base plate, preventing the temperature at the sealing part of the sealing cover from being too high and improving the sealing effect of the sealing cover.

[0004] In the above solution, the water flow in the cooling flow channel is used to reduce the temperature of the mounting base plate and improve the sealing effect. However, the outlets and inlets of all the ends of the cooling flow channels are installed in the same direction. The cooling water enters from the inlet to absorb heat. When the water temperature rises at the rear end of the cooling flow channel, the heat absorption effect decreases, resulting in a temperature difference between the front and rear of the flow channel, directly affecting the sealing effect of the sealing ring. Content of the Utility Model

[0005] The purpose of the utility model is to provide a cooling structure for the sealing groove of an annealing furnace that can solve the above technical problems in view of the above problems.

[0006] To achieve the above purpose, the utility model adopts the following technical solutions:

[0007] The cooling structure for the sealing groove of an annealing furnace includes a heat conduction plate. The heat conduction plate is arranged along the frame of the sealing door of the annealing furnace. An annular sealing groove is opened on the heat conduction plate. A sealing strip is embedded in the sealing groove. Two cooling water channels are opened in the heat conduction plate and are distributed on both sides of the sealing groove. The two cooling water channels have different cooling water flow directions and are both communicated with the sealing groove.

[0008] In the annealing furnace seal groove cooling structure, the cooling water channel includes a water inlet and a water outlet, the water inlet and the water outlet are respectively connected to two ends of the cooling water channel, the water inlet is arranged at one end of one cooling water channel, and the water outlet is arranged at the same-side end of the other cooling water channel.

[0009] In the annealing furnace seal groove cooling structure, the water inlet penetrates out from the side of the annealing furnace seal door, and the water outlet is communicated with the inside of the furnace seal door.

[0010] In the annealing furnace seal groove cooling structure, the cross-section of the seal groove is a regular trapezoid with a narrow notch and a wide bottom, the sealing strip abuts against two inclined surfaces and the bottom surface of the seal groove, and at least a part of the sealing strip protrudes outside the seal groove.

[0011] In the annealing furnace seal groove cooling structure, a cooling gap for cooling water to flow is left between the side of the seal groove close to the cooling water channel and the sealing strip, and the cooling gap is communicated with the cooling water channel.

[0012] In the annealing furnace seal groove cooling structure, the bottom surface of the seal groove bulges towards the midline, the bulge abuts against the sealing strip, and a hole is opened in the cooling water channel to communicate with the lowest part of the cooling gap.

[0013] In the annealing furnace seal groove cooling structure, the hole obliquely leads into the cooling gap along the liquid flow direction of the cooling water channel.

[0014] In the annealing furnace seal groove cooling structure, arc-shaped concave and convex corrugations are arranged on the inner wall of the cooling water channel.

[0015] In the annealing furnace seal groove cooling structure, a heat insulation layer is arranged on the contact surface between the heat conducting plate and the furnace seal door.

[0016] The advantages of the present utility model are as follows:

[0017] Cooling water channels are arranged on both sides of the seal groove to reduce the temperature around the sealing strip, so that the sealing strip can maintain a good working state, and the two cooling water channels are arranged in a way that the cooling water flows in opposite directions, enabling the water channels with a head and tail temperature difference to compensate and balance each other. This can not only effectively reduce the temperature of the sealing strip, but also prevent large temperature differences in different parts of the sealing strip from causing deformation, ensuring the sealing effect of the sealing strip. Description of the Drawings

[0018] Figure 1 It is a schematic diagram of the overall structure of the present utility model.

[0019] Figure 2This is a schematic diagram of the heat conduction plate structure of the present utility model.

[0020] In the figure, there are a heat conduction plate 1, a sealing groove 11, a sealing strip 12, a cooling gap 13, a heat insulation layer 14, a cooling water channel 2, a water inlet 21, a water outlet 22, and a hole 23. Specific implementation manner

[0021] The following are specific embodiments of the utility model and, in conjunction with the accompanying drawings, further describe the technical solutions of the present utility model, but the present utility model is not limited to these embodiments.

[0022] As Figure 1 - Figure 2 shown, the annealing furnace sealing groove cooling structure includes a heat conduction plate 1, the heat conduction plate 1 is arranged along the frame of the annealing furnace sealing door, an annular sealing groove 11 is formed on the heat conduction plate 1, a sealing strip 12 is embedded in the sealing groove 11, and two cooling water channels 2 are formed in the heat conduction plate 1 and distributed on both sides of the sealing groove 11. The two cooling water channels 2 have different cooling water flow directions and are both communicated with the sealing groove 11.

[0023] That is, cooling water channels 2 are arranged on both sides of the sealing groove 11 to reduce the temperature around the sealing strip 12, so that the sealing strip 12 can maintain a good working state. And the two cooling water channels 2 are arranged in a way that the cooling water flows in opposite directions, enabling the water channels with a head-tail temperature difference to compensate and balance each other. This can not only effectively reduce the temperature of the sealing strip 12, but also prevent large temperature differences at various parts of the sealing strip 12 from causing deformation, ensuring the sealing effect of the sealing strip 12.

[0024] In this embodiment, the cooling water channel 2 includes a water inlet 21 and a water outlet 22. The water inlet 21 and the water outlet 22 are respectively arranged at both ends of the cooling water channel 2. The water inlet 21 is arranged at one end of one cooling water channel 2, and the water outlet 22 is arranged at the same-side end of the other cooling water channel 2.

[0025] Although the cooling water channel 2 is arranged along the annular sealing groove 11, its head and tail are not connected. The two ends are respectively connected to the water inlet 21 and the water outlet 22 to form a fixed cooling water flow direction. One cooling water channel 2 is arranged on the inner circle of the sealing groove 11, and the other is arranged on the outer circle of the sealing groove 11, as close as possible to the sealing groove 11 to quickly take away heat. The installation positions of the water inlet 21 and the water outlet 22 on the two cooling water channels 2 are just opposite, making the flow directions of the cooling water show a difference between clockwise and counterclockwise.

[0026] In this embodiment, the water inlet 21 penetrates through the side of the annealing furnace sealing door, and the water outlet 22 is communicated with the inside of the furnace sealing door.

[0027] The water inlet 21 will reduce the contact with components other than the heat conducting plate 1, preventing the cooling water from absorbing too much heat in advance, thereby reducing the heat exchange effect in the cooling water channel 2, and the water outlet 22 can be reused to pass into the inner cavity along the sealed door of the annealing furnace to cool the outer side of the sealed door of the annealing furnace, first ensuring that the sealing strip 12 that is more sensitive to temperature is cooled, and then the temperature of the sealed door of the annealing furnace is controlled, thereby increasing the utilization rate of the cooling water.

[0028] In this embodiment, the cross section of the sealing groove 11 is a regular trapezoid with a narrow groove opening and a wide groove bottom. The sealing strip 12 abuts against two inclined surfaces and the groove bottom of the sealing groove 11 , and at least a portion of the sealing strip 12 is exposed outside the sealing groove 11 .

[0029] The sealing groove 11 has a cross section that is approximately a right trapezoid, and can stably hold the sealing strip 12, so that a small portion of the sealing strip 12 protrudes from the sealing groove 11. In the sealing groove 11, the sealing strip 12 abuts against three walls in the groove to prevent the sealing strip 12 from sliding.

[0030] Preferably, a cooling gap 13 for cooling water to flow is reserved between the sealing groove 11 on the side close to the cooling water channel 2 and the sealing strip 12 , and the cooling gap 13 is connected to the cooling water channel 2 .

[0031] When the sealing strip 12 is in working state, the sealing strip 12 is squeezed from the outside and the inside contacts the groove wall more closely. In particular, the contact with the groove wall forms a cooling water channel at the bottom corner of the sealing groove 11, and a plurality of holes 23 are provided between the cooling gap 13 and the cooling water channel 2, so that the sealing strip 12 can directly contact a small amount of cooling water for cooling.

[0032] Preferably, the bottom surface of the sealing groove 11 bulges toward the midline, the bulge is located where the sealing strip 12 abuts, and a hole 23 is provided in the cooling water channel 2 to communicate with the lowest point of the cooling gap 13 .

[0033] After the cooling water channel 2 stops supplying water, the cooling water in the cooling gap 13 will flow toward the lower part of the sealing groove 11 along the raised structure, and will flow back into the cooling water channel 2 from the hole 23 .

[0034] Preferably, the hole 23 is obliquely connected to the cooling gap 13 along the liquid flow direction of the cooling water channel 2 .

[0035] The holes 23 are tilted toward the direction of cooling water flow, so that the cooling water can flow into the holes 23 .

[0036] In this embodiment, the inner wall of the cooling water channel 2 is provided with arc-shaped concave-convex corrugations for increasing the contact area between the inner wall of the groove and the cooling water, thereby improving the cooling effect of the cooling water on the heat conducting plate 1 without increasing the cooling water flow rate.

[0037] In this embodiment, a heat insulation layer 14 is provided on the contact surface between the heat conducting plate 1 and the furnace sealing door.

[0038] On the one hand, the heat conducting plate 1 is located inside the annealing furnace, and the temperature required for annealing needs to be maintained inside the furnace. However, the heat conducting plate 1 needs to be cooled. Therefore, the two can be separated by the heat insulation layer 14 to reduce the mutual influence.

[0039] On the other hand, the heat conducting plate 1 also contacts or is close to other components of the annealing furnace sealing door. However, the sealing groove 11 part, especially the sealing strip 12, is more likely to deform due to heat, resulting in a reduction in the sealing effect. And other components are designed to work in a high-temperature environment. The heat conducting plate 1 has the highest priority in terms of cooling. In order to prevent the temperature of other components from being conducted to the heat conducting plate 1, the heat insulation layer 14 is used to separate it from the annealing furnace sealing door.

[0040] The specific embodiments described herein are merely illustrative of the spirit of the present utility model. Those skilled in the art to which the present utility model pertains can make various modifications or supplements to the described specific embodiments or use similar ways to replace them, but will not deviate from the spirit of the present utility model or exceed the scope defined by the appended claims.

Claims

1. An annealing furnace sealing groove cooling structure, comprising a heat conducting plate (1), the heat conducting plate (1) being arranged along the frame of the annealing furnace sealing door, the heat conducting plate (1) being provided with an annular sealing groove (11), the sealing groove (11) being embedded with a sealing strip (12), characterized in that: Two cooling water channels (2) are provided in the heat conducting plate (1) and are distributed along both sides of the sealing groove (11). The two cooling water channels (2) have different cooling water flow directions and are both connected to the sealing groove (11).

2. The sealing groove cooling structure of the annealing furnace according to claim 1, characterized in that: The cooling water channel (2) comprises a water inlet (21) and a water outlet (22), wherein the water inlet (21) and the water outlet (22) are respectively arranged at two ends of the cooling water channel (2), the water inlet (21) being arranged at one end of one cooling water channel (2), and the water outlet (22) being arranged at the same side end of the other cooling water channel (2).

3. The sealing groove cooling structure of the annealing furnace according to claim 2, characterized in that: The water inlet (21) passes through the side of the sealed door of the annealing furnace, and the water outlet (22) is connected to the inside of the sealed door of the furnace.

4. The sealing groove cooling structure of the annealing furnace according to claim 1, characterized in that: The cross section of the sealing groove (11) is a regular trapezoid with a narrow groove opening and a wide groove bottom. The sealing strip (12) abuts against two inclined surfaces and the groove bottom surface of the sealing groove (11), and at least a portion of the sealing strip (12) is exposed outside the sealing groove (11).

5. The sealing groove cooling structure of the annealing furnace according to claim 4, characterized in that: A cooling gap (13) for cooling water to flow is reserved between the sealing groove (11) and the sealing strip (12) on the side close to the cooling water channel (2), and the cooling gap (13) is connected to the cooling water channel (2).

6. The sealing groove cooling structure of the annealing furnace according to claim 5, characterized in that: The bottom surface of the sealing groove (11) bulges toward the midline, and the bulge is located in contact with the sealing strip (12). A hole (23) is provided in the cooling water channel (2) and communicates with the lowest point of the cooling gap (13).

7. The sealing groove cooling structure of the annealing furnace according to claim 6, characterized in that: The hole (23) is obliquely connected to the cooling gap (13) along the liquid flow direction of the cooling water channel (2).

8. The sealing groove cooling structure of the annealing furnace according to claim 1, characterized in that: The inner wall of the cooling water channel (2) is provided with arc-shaped concave-convex corrugations.

9. The sealing groove cooling structure of the annealing furnace according to claim 1, characterized in that: A heat insulating layer (14) is provided on the contact surface between the heat conducting plate (1) and the furnace sealing door.

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