A circulating temperature control system for a warm isostatic pressing device

Abstract

The utility model discloses a kind of circulating temperature control systems for warm isostatic pressing equipment, including cylinder and the flow guide barrel being arranged in the inside of cylinder, the inside of cylinder is provided with inner circulation temperature rising mechanism, and the periphery of cylinder is provided with outer circulation temperature rising mechanism;The bottom of flow guide barrel is fixedly connected with cylinder, and periphery is spaced apart between cylinder, to constitute flow guide passage;The middle part of flow guide barrel is provided with the flow guide cavity being communicated with flow guide passage, and the bottom of flow guide barrel is provided with the liquid inlet cavity being communicated with flow guide cavity between cylinder;Liquid inlet is arranged on the cylinder of the bottom of flow guide cavity, and liquid outlet is arranged on the cylinder outside flow guide cavity, and liquid inlet and liquid outlet are respectively connected with inner circulation hot liquid tank, to constitute inner circulation temperature rising mechanism.The utility model can adjust temperature in cylinder in real time, continuously keep temperature in cylinder evenly distributed, avoid external environment temperature influence, greatly improve the pressing efficiency of warm isostatic pressing machine, with good practicability.

Description

Technical Field

[0001] This utility model belongs to the technical field of temperature isostatic pressing equipment for materials, and specifically relates to a circulating temperature control system for temperature isostatic pressing equipment. Background Technology

[0002] Isostatic pressing (IPC) is an advanced ultra-high pressure equipment that uses a sealed high-pressure container to form products under ultra-high pressure conditions with uniform pressure in all directions. Based on the temperature during the forming process, it can be divided into cold IPCs, hot IPCs, and warm IPCs. In the manufacturing process, the part is sealed in a packaging bag and then placed in a container filled with a medium. It is preheated, and then the water in the container is pressurized to ultra-high pressure using a pressurizer; under the set conditions of uniform temperature and pressure, this pressure acts on the part inside the container. Isostatic pressing can be used for pressing multi-layer ceramic green bodies and other thin films, improving the physical and electrical properties of the products.

[0003] Among them, the warm isostatic press is an advanced piece of equipment for performing warm isostatic pressing. The warm isostatic press is a process technology that applies uniform pressure in all directions to powder materials under certain temperature conditions to form them. As a good way of powder forming, it has advantages such as improving the performance of composite material molded parts, improving material uniformity and reducing costs. Utility Model Content

[0004] The purpose of this invention is to provide a circulating temperature control system for isostatic pressing equipment, which aims to achieve stable and uniform temperature control through the coordinated setting of an internal circulation heating mechanism and an external circulation heating mechanism.

[0005] This utility model is mainly achieved through the following technical solutions: A circulating temperature control system for a thermostatic pressure apparatus includes a cylinder and a guide tube disposed inside the cylinder. An internal circulation heating mechanism is provided inside the cylinder, and an external circulation heating mechanism is provided around the cylinder. The bottom of the guide tube is fixedly connected to the cylinder, and its periphery is spaced apart from the cylinder to form a flow channel. A flow cavity communicating with the flow channel is provided in the middle of the guide tube, and a liquid inlet cavity communicating with the flow cavity is provided between the bottom of the guide tube and the cylinder. A liquid inlet is provided on the cylinder at the bottom of the flow cavity, and a liquid outlet is provided on the cylinder outside the flow cavity. The liquid inlet and liquid outlet are respectively connected to an internal circulation hot liquid tank to form an internal circulation heating mechanism. A liquid groove is provided in the middle of the side wall of the cylinder, and the liquid inlet and outlet of the liquid groove are respectively connected to an external circulation hot liquid tank through circulation pipes to form an external circulation heating mechanism.

[0006] To better realize this utility model, the upper and lower side walls of the cylinder body are respectively provided with an upper annular groove and a lower annular groove in the middle, and a spiral groove is provided in the middle of the circumferential side wall of the cylinder body. The outlet and inlet of the external circulation hot liquid tank are respectively connected to the inlet and outlet of the upper annular groove, the lower annular groove, and the spiral groove through circulation pipes.

[0007] To better realize this utility model, the upper and lower ends of the cylinder are respectively provided with an upper plug and a lower plug, and the inner sides of the upper plug and the lower plug are respectively provided with an upper insulation plate and a lower insulation plate. An upper annular groove and a lower annular groove are respectively provided between the upper plug and the upper insulation plate and between the lower plug and the lower insulation plate.

[0008] To better realize this utility model, the cylinder body is further provided with an outer sleeve on its periphery, and an inner sleeve is provided on the inner side of the outer sleeve, and a spiral groove is provided between the inner sleeve and the outer sleeve.

[0009] To better realize this utility model, the lower left end and the upper right end of the spiral groove are respectively provided with a liquid inlet and a liquid outlet; the left end and the right end of the upper annular groove and the lower annular groove are respectively provided with a liquid inlet and a liquid outlet.

[0010] To better realize this utility model, the top of the flow guide cavity is connected to the inside of the cylinder, and several through holes are provided between the flow guide cavity and the liquid inlet cavity, and the inner diameter of the liquid inlet cavity is smaller than the inner diameter of the flow guide cavity.

[0011] The beneficial effects of this utility model are as follows: This invention utilizes an external circulation heating mechanism for preheating, providing a better temperature environment for the internal circulation heating and insulation, and reducing heat loss within the cylinder. Then, the internal circulation heating mechanism gradually raises the temperature to the required level and maintains it. This invention allows for real-time temperature adjustment within the cylinder, continuously maintaining a uniform temperature distribution and avoiding the influence of external ambient temperature, thus significantly improving the pressing efficiency of the isostatic press and demonstrating good practicality. Specifically, the internal and external circulation heating mechanisms operate independently and their temperatures are individually controllable, ensuring a more uniform and accurate temperature distribution within the cylinder. The external placement of the external hot liquid tank reduces internal complexity and space consumption. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the circulating temperature control system for the isostatic pressure equipment of this utility model.

[0013] Wherein: 1-external circulation hydrothermal tank, 2-internal circulation hydrothermal tank, 3-lower plug body, 4-lower insulation plate, 5-guide tube, 6-inner sleeve, 7-outer sleeve, 8-upper insulation plate, 9-upper plug body. Detailed Implementation

[0014] In the description of this utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", and "outer" used to indicate the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship that the utility model product is usually placed in during use. They are only used to facilitate the description of this utility model and to simplify the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0015] Furthermore, the use of terms such as "horizontal" or "vertical" in the description of this utility model does not imply that the component is required to be absolutely horizontal or suspended, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0016] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0017] Example 1: A circulating temperature control system for a thermostatic pressure apparatus includes a cylinder and a guide tube 5 disposed inside the cylinder. The cylinder is provided with an internal circulating heating mechanism and an external circulating heating mechanism disposed on the periphery of the cylinder.

[0018] The bottom of the guide tube 5 is fixedly connected to the cylinder body, and its periphery is spaced apart from the cylinder body to form a guide channel. A guide cavity communicating with the guide channel is provided in the middle of the guide tube 5, and a liquid inlet cavity communicating with the guide cavity is provided between the bottom of the guide tube 5 and the cylinder body. A liquid inlet is provided on the cylinder body at the bottom of the guide cavity, and a liquid outlet is provided on the cylinder body outside the guide cavity. The liquid inlet and liquid outlet are respectively connected to the inner circulation hot liquid tank 2 to form an inner circulation heating mechanism. A liquid groove is provided in the middle of the side wall of the cylinder body, and the liquid inlet and outlet of the liquid groove are respectively connected to the outer circulation hot liquid tank 1 through circulation pipes to form an outer circulation heating mechanism. Preferably, the top of the guide cavity communicates with the inside of the cylinder body, and several through holes are provided between the guide cavity and the liquid inlet cavity. The inner diameter of the liquid inlet cavity is smaller than the inner diameter of the guide cavity.

[0019] Preferably, the upper and lower annular grooves are respectively provided in the middle of the side walls at the upper and lower ends of the cylinder body, and the circumferential side walls of the cylinder body are provided with spiral grooves. The outlet and inlet of the external circulation hot liquid tank 1 are respectively connected to the inlet and outlet of the upper annular groove, the lower annular groove, and the spiral groove through circulation pipes.

[0020] Specifically, the upper and lower ends of the cylinder are respectively provided with an upper plug body 9 and a lower plug body 3, and the inner sides of the upper plug body 9 and the lower plug body 3 are respectively provided with an upper heat insulation plate 8 and a lower heat insulation plate 4. An upper annular groove and a lower annular groove are respectively provided between the upper plug body 9 and the upper heat insulation plate 8 and between the lower plug body 3 and the lower heat insulation plate 4.

[0021] The cylinder body is provided with an outer sleeve 7 around its periphery, and an inner sleeve 6 is fitted inside the outer sleeve 7, with a spiral groove between the inner sleeve 6 and the outer sleeve 7. The lower left end and the upper right end of the spiral groove are respectively provided with a liquid inlet and a liquid outlet; the left end and the right end of the upper annular groove and the lower annular groove are respectively provided with a liquid inlet and a liquid outlet.

[0022] The guide tube 5 forms an internal circulation channel inside the cylinder, ensuring uniform distribution of the heat medium within the cylinder, resulting in efficient heating and excellent temperature uniformity. The use of an external circulation hot liquid tank 1 and an internal circulation hot liquid tank 2 for heating and insulation reduces internal complexity and space loss, improving overall safety. Preferably, the internal working pressure of the isostatic pressing equipment is atmospheric pressure to 400 MPa, the temperature is room temperature to 300°C, and the working medium is oil or water (water operating temperature <100°C). The equipment can perform internal circulation heat exchange under ultra-high pressure conditions. Hot fluid is pumped in through a booster and released through a pressure relief valve to achieve a high-pressure circulation, ensuring the required cylinder temperature and preventing the phenomenon of insufficient temperature due to heat loss during high-pressure holding.

[0023] The isostatic pressing equipment employs an external circulation heating mechanism for preheating and heat preservation. This mechanism utilizes liquid grooves located in the center of the cylinder sidewall to achieve a comprehensive, all-around preheating and heat preservation effect around the cylinder. During operation, the external circulation heating mechanism is first activated for preheating, providing optimal temperature conditions for internal circulation heat preservation and reducing heat loss within the cylinder. Then, the internal circulation gradually raises the temperature to the required level before heat preservation.

[0024] In operation, the external circulating hot liquid is heated to a set temperature (greater than or equal to the set temperature of the medium inside the cylinder) in the external circulating hot liquid tank 1. The hot liquid is then pumped into the external circulating heating mechanism, which consists of a lower annular groove, a spiral groove, and an upper annular groove, to preheat and maintain the temperature inside the cylinder. The internal circulating medium is heated to a set temperature in the internal circulating hot liquid tank 2. The medium is then pumped into the cylinder for circulation. After being rectified by the inlet chamber at the bottom of the guide tube 5, the medium rises to the top along the guide chamber inside the guide tube 5. From the top, it flows through the guide tube 5 along the cylinder wall guide channel to the outlet on the lower plug 3 and then returns to the internal circulating hot liquid tank 2, forming a complete internal circulation heating and maintaining process.

[0025] The external circulation heating mechanism can reduce the complexity and space loss inside the cylinder. The coordinated setting of the internal circulation heating mechanism and the external circulation heating mechanism makes the temperature inside the cylinder more uniform and accurate. The dynamic dual circulation heating and insulation system composed of internal and external circulation can adjust the temperature inside the cylinder in real time, continuously maintain a uniform temperature distribution inside the cylinder, avoid the influence of external ambient temperature, and greatly improve the pressing efficiency of the isostatic press.

[0026] The aforementioned isostatic pressing equipment can perform internal circulation heating and insulation under ultra-high pressure conditions, ensuring uniform and accurate temperature within the cylinder under ultra-high pressure. When using the isostatic pressing equipment, the external circulation heating mechanism is first activated for surround preheating, providing better temperature conditions for internal circulation heating and insulation, and reducing heat loss within the cylinder. Then, the internal circulation heating mechanism gradually raises the temperature to the required level before insulation. The external circulation hot liquid tank 1 and the internal circulation hot liquid tank 2 are arranged side-by-side, allowing the internal and external circulation heating mechanisms to operate independently and their temperatures to be individually controllable, ensuring more uniform and accurate temperature within the cylinder.

[0027] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Any simple modifications or equivalent changes made to the above embodiments based on the technical essence of the present utility model shall fall within the protection scope of the present utility model.

Claims

1. A circulating temperature control system for a thermostatic pressure apparatus, characterized in that, The device includes a cylinder body and a guide tube (5) disposed inside the cylinder body. The cylinder body is provided with an internal circulation heating mechanism and an external circulation heating mechanism is provided on the periphery of the cylinder body. The bottom of the guide tube (5) is fixedly connected to the cylinder body, and the periphery is spaced apart from the cylinder body to form a guide channel. The middle part of the guide tube (5) is provided with a guide cavity communicating with the guide channel. The bottom of the guide tube (5) is provided with a liquid inlet communicating with the guide cavity between it and the cylinder body. The bottom of the guide cavity is provided with a liquid inlet on the cylinder body and the outside of the guide cavity is provided with a liquid outlet on the cylinder body. The liquid inlet and the liquid outlet are respectively connected to the internal circulation hot liquid tank (2) to form an internal circulation heating mechanism. The middle part of the side wall of the cylinder body is provided with a liquid groove, and the liquid inlet and liquid outlet of the liquid groove are respectively connected to the external circulation hot liquid tank (1) through circulation pipes to form an external circulation heating mechanism.

2. The circulating temperature control system for a thermostatic pressure equipment according to claim 1, characterized in that, The upper and lower annular grooves are respectively provided in the middle of the side walls at the upper and lower ends of the cylinder body, and a spiral groove is provided in the middle of the circumferential side wall of the cylinder body. The outlet and inlet of the external circulation hot liquid tank (1) are respectively connected to the inlet and outlet of the upper annular groove, the lower annular groove, and the spiral groove through circulation pipes.

3. The circulating temperature control system for a thermostatic pressure equipment according to claim 2, characterized in that, The upper and lower ends of the cylinder are respectively provided with an upper plug (9) and a lower plug (3), and the inner sides of the upper plug (9) and the lower plug (3) are respectively provided with an upper insulation plate (8) and a lower insulation plate (4). An upper annular groove and a lower annular groove are respectively provided between the upper plug (9) and the upper insulation plate (8) and between the lower plug (3) and the lower insulation plate (4).

4. A circulating temperature control system for a thermostatic pressure apparatus according to claim 2, characterized in that, The cylinder body is provided with an outer sleeve (7) on its periphery, and an inner sleeve (6) is provided on the inner side of the outer sleeve (7), and a spiral groove is provided between the inner sleeve (6) and the outer sleeve (7).

5. A circulating temperature control system for a thermostatic pressure apparatus according to claim 2, characterized in that, The lower left end and the upper right end of the spiral groove are respectively provided with a liquid inlet and a liquid outlet; the left end and the right end of the upper annular groove and the lower annular groove are respectively provided with a liquid inlet and a liquid outlet.

6. The circulating temperature control system for a thermostatic pressure apparatus according to claim 1, characterized in that, The top of the guide cavity is connected to the inside of the cylinder, and several through holes are provided between the guide cavity and the liquid inlet cavity. The inner diameter of the liquid inlet cavity is smaller than the inner diameter of the guide cavity.

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