Holding furnace for metal hafnium strip production
By using liftable and lowered external and internal heat exchangers and electric lead screw modules in the insulation furnace, fine adjustment of the temperature in the furnace and efficient cooling of the iodide device are achieved, and the problems of low cooling control accuracy and low cooling efficiency in the prior art are solved.
Patent Information
- Application Number
- CN202520676042.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-11
- Publication Date
- 2025-05-20
- Estimated Expiration
- 2035-04-11
AI Technical Summary
The existing insulation furnace has low cooling control accuracy in the furnace, and the iodide cooling efficiency is not high, which is affected by the residual temperature in the furnace.
An insulating furnace for the production of metal hafnium strips is designed, using external heat exchangers and internal heat exchangers that can be lifted and lowered separately, and the temperature is finely adjusted through an electric screw module, and the iodide is assisted in cooling the iodide outside the furnace body.
The fine adjustment of the temperature in the furnace is achieved, keeping the iodide in the optimal crystallization temperature range, and the design of the external heat exchanger, the internal heat exchanger and the iodide are located above the inner liner, avoiding the influence of the residual temperature in the furnace and improving the cooling efficiency.
Smart Images
Figure CN222887500U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of heat preservation furnaces, in particular to a heat preservation furnace for the production of hafnium bars. Background Technique
[0002] During the production process of crystalline hafnium bars, a heat preservation furnace with adjustable temperature is required to ensure that the reaction temperature in the furnace is relatively stable, generally maintained at 240°C to 300°C, so that the internal hoisted iodizer can crystallize with the best growth efficiency.
[0003] The existing heat preservation furnace monitors the temperature in the furnace in real time through a thermocouple and changes the temperature in the furnace by adjusting the power. When the temperature in the furnace rises above 300°C, the speed of changing the temperature in the furnace by adjusting the power is relatively low. At this time, the spiral coil installed between the furnace and the iodizer needs to intervene. The spiral coil is connected to an external condenser and can be timely temperature-adjusted through the circulating cold medium; in addition, during the process of the heat preservation furnace stopping heating and the iodizer cooling, the spiral coil can also play an auxiliary cooling role.
[0004] However, the structure of the spiral coil is relatively single, resulting in low precision in temperature reduction control in the furnace, and in the cooling method in the furnace, the iodizer will be affected by the residual temperature in the furnace, and the cooling efficiency is not high.
[0005] Therefore, in order to solve the above problems, a heat preservation furnace for the production of hafnium bars is proposed. Content of the Utility Model
[0006] The purpose of the utility model is to provide a heat preservation furnace for the production of hafnium bars, which can more accurately control the temperature and can complete the auxiliary cooling of the iodizer outside the furnace body, thus solving the problems raised in the above background technique.
[0007] To achieve the above purpose, the utility model provides the following technical solution: A heat preservation furnace for the production of hafnium bars, including a furnace body. A support beam is fixedly installed on the rear side of the upper surface of the middle platform of the furnace body. Two electric lead screw modules are fixedly installed on the upper surface of the middle platform of the furnace body. The two electric lead screw modules are symmetrically arranged left and right. The support beam is fixedly installed with a support ring. The support ring is located directly above the inner liner of the furnace body. The sliders of the electric lead screw modules are arranged oppositely, and support platforms are fixedly installed on the sides of the sliders close to each other. An inner heat exchanger is fixedly installed on one support platform, and an outer heat exchanger is fixedly installed on the other support platform. A conveying structure connecting the inner heat exchanger and the outer heat exchanger is installed above the middle platform of the furnace body.
[0008] Specifically, both the inner heat exchanger and the outer heat exchanger are formed by bending continuous double - path S - shaped pipes, and a liquid inlet pipe and a liquid discharge pipe are connected and installed at the top. The left and right sides of the double - path S - shaped pipes are bent backward to form two rows of bent pipe ends, and the distance between the two rows of bent pipe ends is greater than the width of the support beam.
[0009] Furthermore, the outer diameter of the outer heat exchanger is smaller than the inner diameter of the inner tank in the furnace body, the outer diameter of the inner heat exchanger is smaller than the inner diameter of the outer heat exchanger, and the outer diameter of the support ring is smaller than the inner diameter of the inner heat exchanger.
[0010] Specifically, the conveying structure includes an infusion pipe and a return pipe. The return pipe is fixedly installed on the upper side of the platform in the furnace body, and the infusion pipe is fixedly installed on the upper side of the return pipe. The liquid inlet pipes are all connected and assembled with the infusion pipe through metal hoses, and the liquid discharge pipes are all connected and assembled with the return pipe through metal hoses.
[0011] Furthermore, a heat insulation layer is arranged between the infusion pipe and the return pipe.
[0012] Furthermore, the metal hoses are all sleeved with protective chains.
[0013] Specifically, flange pipes are connected and installed on the sides of the infusion pipe and the return pipe far from the support beam.
[0014] Specifically, a thermocouple is also fixedly installed on the support platform where the outer heat exchanger is installed.
[0015] Compared with the prior art, the beneficial effects of the present utility model are as follows: Through the outer heat exchanger and the inner heat exchanger that can be lifted separately, the temperature in the inner tank can be finely adjusted to keep the iodizer within the optimal crystallization temperature range;
[0016] In addition, during cooling, the outer heat exchanger, the inner heat exchanger, and the iodizer are all located above the inner tank and are not affected by the residual temperature in the furnace, so the effect of auxiliary cooling is better. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 is the main structural schematic view of the present utility model;
[0018] Figure 2 is the partial sectional structural schematic view of the present utility model;
[0019] Figure 3 is the partial sectional structural schematic view of the present utility model when the outer heat exchanger enters the inner tank for use;
[0020] Figure 4 is the partial sectional structural schematic view of the present utility model when the outer heat exchanger and the inner heat exchanger are located above the inner tank for use;
[0021] Figure 5Schematic diagram of the internal heat exchanger of the present utility model;
[0022] Figure 6 Schematic diagram of the external heat exchanger of the present utility model.
[0023] In the figure: 1 furnace main body, 2 protective chain, 3 electric lead screw module, 4 drain pipe, 5 liquid inlet pipe, 6 support beam, 7 support ring, 8 support platform, 9 infusion pipe, 10 heat insulation layer, 11 return pipe, 12 internal heat exchanger, 13 external heat exchanger, 14 flange pipe, 15 elbow end, 16 thermocouple. Specific embodiments
[0024] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.
[0025] Please refer to Figure 1 and Figure 2 The present utility model provides a technical solution: a heat preservation furnace for hafnium bar production, including a furnace main body 1. A support beam 6 is fixedly installed on the rear side of the upper surface of the middle platform of the furnace main body 1. Two electric lead screw modules 3 are fixedly installed on the upper surface of the middle platform of the furnace main body 1. The two electric lead screw modules 3 are symmetrically arranged left and right. The support beam 6 is fixedly installed with a support ring 7. The support ring 7 is located directly above the inner tank of the furnace main body 1. The support ring 7 is horizontally arranged and is used to place the crystallization furnace.
[0026] The electric lead screw module 3 is vertically arranged. The sliders of the electric lead screw module 3 are oppositely arranged, and support platforms 8 are fixedly installed on the sides of the sliders close to each other. An internal heat exchanger 12 is fixedly installed on one support platform 8, and an external heat exchanger 13 is fixedly installed on the other support platform 8. When the electric lead screw module 3 works, it can drive the internal heat exchanger 12 and the external heat exchanger 13 to move up and down through the support platforms 8 respectively. When the internal heat exchanger 12 and the external heat exchanger 13 are lifted to the top of the electric lead screw module 3, they are in the standby working position, and when they fall into the inner tank of the furnace main body 1, they are in the use working position.
[0027] A conveying structure communicating the internal heat exchanger 12 and the external heat exchanger 13 is installed on the upper side of the middle platform of the furnace main body 1. The conveying structure is used to simultaneously convey the cold medium in the external condenser to the internal heat exchanger 12 and the external heat exchanger 13 for distribution and use.
[0028] Specifically, please refer to Figure 5 and Figure 6, both the internal heat exchanger 12 and the external heat exchanger 13 are formed by bending continuous double - path S - shaped pipes, and a liquid inlet pipe 5 and a liquid discharge pipe 4 are connected and installed at the top. Both the left and right sides of the double - path S - shaped pipes bend backward to form two rows of bent pipe ends 15, and the distance between the two rows of bent pipe ends 15 is greater than the width of the support beam 6; the internal heat exchanger 12 and the external heat exchanger 13 with such a shape can cover the crystallization furnace and will not interfere with the support beam 6 during lifting and moving.
[0029] The outer diameter dimension of the external heat exchanger 13 is smaller than the inner diameter dimension of the inner tank in the furnace body 1, the outer diameter dimension of the internal heat exchanger 12 is smaller than the inner diameter dimension of the external heat exchanger 13, and the outer diameter dimension of the support ring 7 is smaller than the inner diameter dimension of the internal heat exchanger 12; such a dimension setting can meet the requirements of lifting and moving and avoid mutual contact.
[0030] Specifically, please refer to Figure 2 , the conveying structure includes an infusion pipe 9 and a return pipe 11. The return pipe 11 is fixedly installed on the upper side of the platform in the furnace body 1, and the infusion pipe 9 is fixedly installed on the upper side of the return pipe 11. The liquid inlet pipes 5 are all connected and assembled with the infusion pipe 9 through metal hoses, and the liquid discharge pipes 4 are all connected and assembled with the return pipe 11 through metal hoses; the cold medium in the infusion pipe 9 can be simultaneously input into the two liquid inlet pipes 5 through the metal hoses, and the heat - exchanged hot medium can simultaneously return to the return pipe 11 through the metal hoses and the liquid discharge pipes 4, having the processing ability of centralized output and centralized collection.
[0031] An insulating layer 10 (the material can be selected as rigid polyurethane foam) is provided between the infusion pipe 9 and the return pipe 11 to prevent the cold medium in the infusion pipe 9 from losing cold due to heat exchange with the return pipe 11 before use.
[0032] In addition, the metal hoses are all sleeved with protective chains 2. One end of the metal hose will deform when lifting and lowering with the liquid discharge pipe 4 and the liquid inlet pipe 5, and the protective chain 2 can provide over - bending protection for the metal hose to ensure the smooth conveyance of cold and hot media.
[0033] Specifically, please refer to Figure 1 , on the side of the infusion pipe 9 and the return pipe 11 away from the support beam 6, a flange pipe 14 is connected and installed. The flange pipe 14 can be connected to an external condenser through a connecting pipe, used to pressurize and convey cold medium into the infusion pipe 9 and recover the hot medium in the return pipe 11 to cool the hot medium for recycling.
[0034] The support platform 8 installed with the external heat exchanger 13 is also fixedly installed with a thermocouple 16, and the thermocouple 16 is used to detect the temperature around the iodinator when it is in the inner tank and above the inner tank.
[0035] The working principle of this embodiment:
[0036] The furnace main body 1, the electric lead screw module 3 are electrically connected to the controller in the external electrical box.
[0037] In the initial state, please refer to Figure 3 , the external heat exchanger 13 and the thermocouple 16 first enter the inner tank through the electric lead screw module 3, while the internal heat exchanger 12 is lifted above the inner tank by the electric lead screw module 3 for standby. The thermocouple 16 can monitor the temperature around the iodizer. The furnace main body 1 first raises the temperature to 300 °C, and then the iodizer is placed in the support ring 7 from top to bottom by a crane. A crystallization reaction occurs inside the iodizer to form hafnium bars.
[0038] When the temperature is higher than 300 °C and the temperature difference is within 50 °C, after the condenser passes in the cold medium, it enters the internal heat exchanger 12 and the external heat exchanger 13 through the infusion pipe 9 and the inlet pipe 5. At this time, the internal heat exchanger 12 is on standby, and only the external heat exchanger 13 is located in the inner tank for heat exchange work;
[0039] When the temperature difference is greater than 50 °C, please refer to Figure 2 , the electric lead screw module 3 drives the internal heat exchanger 12 to also enter the inner tank and is located between the external heat exchanger 13 and the iodizer. Through double heat exchange by the internal heat exchanger 12 and the external heat exchanger 13, the temperature can be quickly reduced to between 240 °C and 300 °C;
[0040] When the temperature is below 270 °C, the internal heat exchanger 12 is lifted and reset. When the temperature is below 240 °C, the condenser stops delivering the cold medium, that is, the external heat exchanger 13 does not perform heat exchange. Repeating this way can achieve the purpose of precisely adjusting the temperature.
[0041] In addition, when the iodizer is lifted out above the inner tank for cooling, please refer to Figure 4 , both electric lead screw modules 3 drive the internal heat exchanger 12 and the external heat exchanger 13 to be located above the inner tank, maintaining the working condition around the iodizer. The introduced cold medium can assist in cooling, and the thermocouple 16 can still be used to monitor the temperature around the iodizer until the cooling is completed.
[0042] Finally, remove the iodizer and fill it with water, turn on the iodizer and take out the hafnium bars.
[0043] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above exemplary embodiments, and without departing from the spirit or basic characteristics of the present utility model, the present utility model can be implemented in other specific forms. Therefore, in any regard, the embodiments should be regarded as exemplary and non-limiting. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be embraced within the present utility model. Any reference signs in the claims should not be regarded as limiting the claimed rights.
[0044] In addition, it should be understood that although this specification is described in terms of embodiments, not every embodiment contains only an independent technical solution. This narrative style of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.
Claims
1. A holding furnace for producing metal hafnium bars, comprising a furnace body (1), characterized in that: A support beam (6) is fixedly mounted on the rear side of the upper surface of the platform in the furnace main body (1); two electric screw modules (3) are fixedly mounted on the upper surface of the platform in the furnace main body (1); the two electric screw modules (3) are symmetrically arranged on the left and right; a support ring (7) is fixedly mounted on the support beam (6); the support ring (7) is located directly above the inner tank in the furnace main body (1); the slides of the electric screw modules (3) are arranged opposite to each other, and support platforms (8) are fixedly mounted on the sides of the slides close to each other; one of the support platforms (8) is fixedly mounted with an internal heat exchange component (12); the other of the support platforms (8) is fixedly mounted with an external heat exchange component (13); and a conveying structure connecting the internal heat exchange component (12) and the external heat exchange component (13) is mounted on the upper side of the platform in the furnace main body (1).
2. The holding furnace for producing metal hafnium bars according to claim 1, characterized in that: The inner heat exchange element (12) and the outer heat exchange element (13) are both formed by bending a continuous double-channel S-shaped pipe, and a liquid inlet pipe (5) and a liquid discharge pipe (4) are connected and installed on the top, and the left and right sides of the double-channel S-shaped pipe are bent backwards to form two rows of bent pipe ends (15), and the distance between the two rows of bent pipe ends (15) is greater than the width of the support beam (6).
3. The holding furnace for producing metal hafnium bars according to claim 1, characterized in that: The outer diameter of the outer heat exchange component (13) is smaller than the inner diameter of the inner tank in the furnace body (1), the outer diameter of the inner heat exchange component (12) is smaller than the inner diameter of the outer heat exchange component (13), and the outer diameter of the support ring (7) is smaller than the inner diameter of the inner heat exchange component (12).
4. The holding furnace for producing metal hafnium bars according to claim 2, characterized in that: The conveying structure comprises a liquid delivery pipe (9) and a return pipe (11); the return pipe (11) is fixedly mounted on the upper side of the platform in the furnace body (1); the liquid delivery pipe (9) is fixedly mounted on the upper side of the return pipe (11); the liquid inlet pipe (5) is connected to the liquid delivery pipe (9) via a metal hose, and the liquid discharge pipe (4) is connected to the return pipe (11) via a metal hose.
5. The holding furnace for producing metal hafnium bars according to claim 4, characterized in that: A heat insulation layer (10) is provided between the infusion tube (9) and the return tube (11).
6. The holding furnace for producing metal hafnium bars according to claim 4, characterized in that: The metal hoses are all sleeved with a protective chain (2).
7. The holding furnace for producing metal hafnium bars according to claim 4, characterized in that: The sides of the infusion pipe (9) and the return pipe (11) away from the support beam (6) are both connected and installed with flange pipes (14).
8. The holding furnace for producing metal hafnium bars according to claim 1, characterized in that: A thermocouple (16) is also fixedly mounted on the support platform (8) on which the external heat exchange component (13) is mounted.