Protection device system for preventing furnace temperature of hot isostatic press from being too low

Abstract

The utility model provides a protection device system for preventing the furnace temperature of a hot isostatic press from being too low. The protection device system comprises a temperature measuring assembly, a heating assembly and a control unit. The temperature measuring assembly is arranged below a hot isostatic pressing machine furnace burden placing plate; the temperature measuring assembly comprises at least two thermocouples with the same scale number; the heating assembly is arranged in a hot isostatic pressing machine furnace charge area. The heating assembly is used for starting heating when the temperature value detected by the temperature measuring assembly is lower than a preset value; and the control unit comprises a PLC (Programmable Logic Controller), a temperature measurement signal input module and a temperature measurement signal output module. Through cooperative use of the temperature measuring assembly, the heating assembly and the control unit, the temperature change of the bottom of the hot isostatic pressing machine in the exhaust process is dynamically monitored, the low-temperature automatic heating and alarming functions are achieved, frosting of products and electrical components of equipment is effectively avoided, and the stability of the products and the safety and reliability of the equipment are improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to hot isostatic pressing equipment technical field relates to a prevent the protection device system of hot isostatic pressing machine furnace temperature too low. BACKGROUND

[0002] Hot isostatic pressing machine (HIP) is a kind of in airtight container with inert gas (usually argon) as the transmission medium, in the die for solid workpiece or powder constituting die pressing material high temperature and high pressure densification processing equipment. Under the joint action of high temperature and high pressure, the processed piece is balancedly pressed in all directions, so that the densification of the processed product is high, uniformity is good, and performance is excellent, and the technology has the characteristics of short production cycle, less process, low energy consumption and small material loss, etc., is the necessary means for the preparation of high-performance materials.

[0003] Because a large amount of argon will be used as protective gas and pressure medium in the production process of hot isostatic pressing machine;Argon is a colorless, odorless monatomic gas, and the density of argon is 1.4 times that of air, and 10 times that of helium. The main process of hot isostatic pressing machine production process has the following stages: vacuumizing, filling argon, pressurizing, heating, temperature keeping, cooling, discharging argon and discharging. The temperature in the container will gradually decrease during the exhaust stage, and even the product will be physically reacted below room temperature, and water droplets will be formed on the surface of the product, which will affect the quality and stability of the equipment.

[0004] In the prior art, the temperature monitoring of the bottom of the hot isostatic pressing container usually depends on artificial observation and manual control, that is, the operator regularly checks the temperature state, and manually starts heating when the temperature is lower than the set value. However, this manual monitoring method has significant limitations, for example, when the operator fails to observe the temperature change in time, the temperature in the container may be too low, which will affect the product quality and the service life of the electrical components of the equipment.

[0005] In summary, it is urgent to improve the hot isostatic pressing machine to realize the automatic adjustment and alarm function of the low temperature at the bottom of the hot isostatic pressing machine, and to improve the stability of the product and the safety and reliability of the equipment. UTILITY MODEL CONTENTS

[0006] In view of the deficiencies in the prior art, the utility model aims to provide a protection device system for preventing the furnace temperature of a hot isostatic pressing machine from being too low, which dynamically monitors the temperature change at the bottom of the hot isostatic pressing machine during the exhaust process by using the temperature measuring assembly, heating assembly and control unit, realizes the low-temperature automatic heating and alarm function, effectively avoids the frosting of the product and the electrical components of the equipment, and improves the stability of the product and the safety and reliability of the equipment.

[0007] To achieve this purpose, the utility model adopts the following technical solutions:

[0008] The utility model provides a kind of protection device system for preventing hot isostatic press furnace temperature too low, the protection device system includes temperature measuring component, heating assembly and control unit;

[0009] The temperature measuring component is arranged below the hot isostatic press furnace charge placement plate;The temperature measuring component includes at least 2 thermocouples of the same scale number;

[0010] The heating assembly is arranged inside the hot isostatic press furnace charge area;The heating assembly is started when the temperature value detected by the temperature measuring component is lower than the preset value.

[0011] The control unit includes a PLC controller, a temperature measuring signal input module and a temperature measuring signal output module;The temperature measuring signal input module and the temperature measuring signal output module are independently connected to the PLC controller.

[0012] The output end of the thermocouple is connected to the temperature measuring signal input module by wires.

[0013] The temperature measuring signal input module and the temperature measuring signal output module are connected to the heating assembly.

[0014] In the utility model, the thermocouple can be an S-shaped thermocouple.

[0015] The protection device system provided by the utility model adds a temperature measuring component below the hot isostatic press furnace charge placement plate, dynamically monitors the temperature change of the bottom of the hot isostatic press during the exhaust process, and then combines the control unit and the heating assembly. When the temperature value detected by the temperature measuring component is lower than the preset value, the control unit sends an alarm instruction and starts the heating assembly to warm up to the preset value, realizing the functions of automatic warming up at low temperature and alarm, effectively preventing the frosting of electrical components of products and equipment, improving the stability of products and the safety and reliability of equipment, optimizing the use of existing equipment, saving cost investment, and being beneficial to industrial production.

[0016] It should be noted that by arranging multiple thermocouples of the same scale number below the furnace charge placement area, when the thermocouple monitoring the temperature fails, other thermocouples can replace the failed thermocouple, ensuring continuous and stable temperature control.

[0017] As a preferred technical solution of the utility model, the distance between the thermocouple and the bottom end of the hot isostatic press is 80-110 cm.

[0018] As a preferred technical solution of the utility model, the heating assembly includes heating wires and temperature sensors connected to the heating wires.

[0019] As a preferred technical solution of the utility model, the heating wires are arranged inside the hot isostatic press furnace charge area.

[0020] As the preferred technical scheme of the utility model, the temperature sensor is respectively independently connected with the temperature measuring signal input module and the temperature measuring signal output module.

[0021] As the preferred technical scheme of the utility model, the control unit further comprises a display screen and a switch assembly which are respectively independently connected with the PLC controller.

[0022] As the preferred technical scheme of the utility model, the PLC controller is used for acquiring the temperature value detected by the temperature measuring assembly and displaying on the display screen, and when the temperature value is lower than the preset value, the heating assembly is started to heat to the preset value.

[0023] As the preferred technical scheme of the utility model, the protection device system further comprises an alarm unit.

[0024] The alarm unit is connected with the PLC controller.

[0025] As the preferred technical scheme of the utility model, the alarm unit comprises a siren.

[0026] Compared with the prior art, the utility model has the following beneficial effects:

[0027] (1) the protection device system provided by the utility model realizes the low-temperature automatic heating and alarm functions, effectively avoids the frost of product and equipment electrical components, improves the stability of product and the safety and reliability of equipment, realizes the optimized use of existing equipment, saves the cost investment, and is beneficial to industrial production.

[0028] (2) the protection device system provided by the utility model sets multiple thermocouples below the furnace charge placing plate of the hot isostatic press, so that when the thermocouple for monitoring temperature fails, other thermocouples can replace the failed thermocouple, thereby ensuring continuous and stable temperature control. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 It is the structure schematic view of the protection device system for preventing the furnace temperature of the hot isostatic press from being too low in embodiment 1.

[0030] Among them, 1-hot isostatic press, 2-furnace charge area, 3-furnace charge placing plate, 4-s type thermocouple, 5-heating wire, 6-temperature sensor, 7-PLC controller, 8-temperature measuring signal input module, 9-temperature measuring signal output module, 10-display screen, 11-switch assembly. DETAILED DESCRIPTION

[0031] It should be understood that, in the description of the utility model, the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model.

[0032] It should be noted that, in the description of the utility model, unless otherwise explicitly specified and limited, the terms "arrangement", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrally connected, 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 communication between two elements. For ordinary skilled persons in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0033] The specific embodiment of the utility model provides a kind of protection device system for preventing hot isostatic press furnace temperature too low, the protection device system includes temperature measuring component, heating component and control unit;

[0034] The temperature measuring component is arranged below the hot isostatic press furnace material placement plate;The temperature measuring component includes at least 2 thermocouples of the same scale number;

[0035] The heating component is arranged inside the hot isostatic press furnace material area;The heating component is used to start heating when the temperature value detected by the temperature measuring component is lower than the preset value;

[0036] The control unit includes PLC controller, temperature measuring signal input module and temperature measuring signal output module;The temperature measuring signal input module and the temperature measuring signal output module are respectively independently connected with PLC controller;

[0037] The output end of the thermocouple is connected with the temperature measuring signal input module by wire and electric signal;

[0038] The temperature measuring signal input module and the temperature measuring signal output module are electrically connected with the heating component.

[0039] The protection device system provided by the utility model cooperates with temperature measuring component, heating component and control unit, dynamically monitors the temperature change of the bottom of hot isostatic press in the exhaust process, realizes low-temperature automatic heating and alarm function, effectively avoids product and equipment electrical components frost, improves the stability of product and the safety and reliability of equipment.

[0040] In some embodiments of the utility model, the distance between the thermocouple and the bottom end of the hot isostatic press is 80-110 cm, for example, it can be 82 cm, 84 cm, 85 cm, 86 cm, 88 cm, 90 cm, 92 cm, 94 cm, 95 cm, 96 cm, 98 cm, 100 cm, 102 cm, 104 cm, 105 cm, 106 cm or 108 cm, but it is not limited to the listed values, and other values not listed in the range are also applicable.

[0041] In the utility model, by controlling the distance range between the temperature measuring assembly and the bottom end of the hot isostatic press, abnormal phenomena occurring in the exhaust process of the hot isostatic press can be found early, which helps to improve the stability of the product and the safety and reliability of the equipment.

[0042] In some embodiments of the utility model, the heating assembly comprises a heating wire and a temperature sensor connected with the heating wire.

[0043] In some embodiments of the utility model, the heating wire is arranged inside the furnace charge area of the hot isostatic press.

[0044] In some embodiments of the utility model, the temperature sensor is respectively and independently connected with the temperature measuring signal input module and the temperature measuring signal output module.

[0045] In some embodiments of the utility model, the control unit further comprises a display screen and a switch assembly respectively and independently connected with the PLC controller.

[0046] In the utility model, by setting the display screen and the switch assembly, manual switching can also be realized on the basis of automatic switching.

[0047] In some embodiments of the utility model, the PLC controller is used to acquire the temperature value detected by the temperature measuring assembly and display it on the display screen, and when the temperature value is lower than the preset value, the heating assembly is started to warm up to the preset value.

[0048] In the utility model, the temperature of the preset value is ≤50 DEG C, for example, it can be 48 DEG C, 45 DEG C, 42 DEG C, 42 DEG C, 40 DEG C, 38 DEG C, 35 DEG C, 32 DEG C or 30 DEG C, but it is not limited to the listed values, and other values not listed in the range are also applicable.

[0049] In some embodiments of the utility model, the protection device system further comprises an alarm unit.

[0050] In some embodiments of the utility model, the alarm unit is connected with the PLC controller.

[0051] The utility model discloses, through setting up alarm unit, when temperature value is lower than the preset value, send alarm instruction, to remind operating personnel temperature change of monitoring display screen, if protection device system appears the failure, then timely manual starting heating assembly.

[0052] In some embodiments of the utility model, the alarm unit comprises a siren.

[0053] The utility model specific implementation further provides a kind of low temperature monitoring method using the protection device system of preceding, and the low temperature monitoring method includes the following steps:

[0054] (1) after hot isostatic pressing machine is used to heat isostatic pressing to product, in the exhaust process, open temperature measuring assembly and control unit, obtain the temperature value detected by temperature measuring assembly and display on display screen;

[0055] (2) when the temperature value of step (1) is lower than the preset value, start heating assembly and heat to preset value.

[0056] The technical scheme of the utility model is further illustrated by specific embodiments in conjunction with the drawings.

[0057] Example 1

[0058] The embodiment provides a protection device system for preventing the furnace temperature of hot isostatic pressing machine from being too low (as shown in the figure), which comprises a temperature measuring assembly, a heating assembly and a control unit. Figure 1

[0059] The temperature measuring assembly is arranged below the furnace charge placement plate 3 of the hot isostatic pressing machine 1, and is two s-type thermocouples 4.

[0060] The heating assembly is used to start heating when the temperature value detected by the temperature measuring assembly is lower than the preset value, and comprises heating wires 5 and temperature sensors 6 connected with the heating wires 5.

[0061] The control unit comprises a PLC controller 7, a temperature measuring signal input module 8, a temperature measuring signal output module 9, a display screen 10 and a switch assembly 11.

[0062] The PLC controller 7 is used to obtain the temperature value detected by the temperature measuring assembly and display on the display screen, and start the heating assembly to heat to the preset value when the temperature value is lower than the preset value.

[0063] ​The output end of the s-type thermocouple 4 is connected with the temperature signal input module 8 through a wire.

[0064] The temperature sensor 6 is independently connected with the temperature signal input module 8 and the temperature signal output module 9.

[0065] The embodiment also provides a low-temperature monitoring method using the protection device system.

[0066] (1) After the hot isostatic pressing machine 1 is used to perform hot isostatic pressing on the product, the temperature value detected by the s-type thermocouple 4 is obtained and displayed on the display screen 10 in the process of argon discharge, and the temperature measuring assembly and the control unit are turned on.

[0067] (2) When the temperature value in step (1) is lower than 45℃, the heating assembly is started to heat to 45℃.

[0068] Example 2

[0069] The embodiment provides a protection device system for preventing the furnace temperature of a hot isostatic pressing machine from being too low, and is further limited based on the embodiment 1.

[0070] The protection device system further comprises an alarm unit; the alarm unit is connected with the PLC controller; and the alarm unit is a siren.

[0071] The embodiment also provides a low-temperature monitoring method using the protection device system.

[0072] (1) After the hot isostatic pressing machine is used to perform hot isostatic pressing on the product, the temperature value detected by the s-type thermocouple is obtained and displayed on the display screen in the process of argon discharge, and the temperature measuring assembly and the control unit are turned on.

[0073] (2) When the temperature value in step (1) is lower than 50℃, an alarm instruction is sent and the heating assembly is started to heat to 50℃.

[0074] The protection device system provided in the embodiments 1-2 aims at the problem that the temperature needs to be manually monitored in the process of argon discharge of the existing hot isostatic pressing machine, the temperature measuring assembly is additionally arranged below the furnace charge placing plate of the hot isostatic pressing machine, the temperature change at the bottom of the hot isostatic pressing machine is dynamically monitored, then the control unit and the heating assembly are combined, the low-temperature automatic heating and alarm functions are realized, the product and the equipment electrical components are effectively prevented from frosting, and the stability of the product and the safety and reliability of the equipment are improved.

[0075] Comparative Example 1

[0076] The comparative example 2 provides a hot isostatic press, which is the same as the example 1 except that the temperature measuring assembly and the control unit are not provided.

[0077] The hot isostatic press provided by the comparative example 2 can only find that the temperature is lower than the set value by manually starting the heating through artificial observation of the temperature change of the exhaust process of the hot isostatic press. However, this artificial monitoring method has significant limitations, lacks real-time and accuracy, for example, when the operator fails to observe the temperature change in time, it may cause the temperature in the container to be too low, thereby affecting the product quality and the service life of the electrical components of the equipment.

[0078] The applicant declares that the above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. It should be understood by those skilled in the art that any changes or replacements within the technical scope disclosed by the present application can be easily thought of by any person skilled in the art, and all fall within the protection scope and disclosure scope of the present application.

Claims

1. A protection device system for preventing excessively low furnace temperature in a hot isostatic press, characterized in that, The protection device system comprises a temperature measuring assembly, a heating assembly and a control unit; The temperature measuring assembly is arranged below a furnace charge placement plate of a hot isostatic press; the temperature measuring assembly comprises at least two thermocouples of the same scale; The heating assembly is arranged inside a furnace charge area of the hot isostatic press; the heating assembly is used to start heating when the temperature value detected by the temperature measuring assembly is lower than a preset value; The control unit comprises a PLC controller, a temperature measuring signal input module and a temperature measuring signal output module; the temperature measuring signal input module and the temperature measuring signal output module are respectively independently connected with the PLC controller; An output end of the thermocouple is electrically connected with the temperature measuring signal input module through a wire; The temperature measuring signal input module and the temperature measuring signal output module are electrically connected with the heating assembly.

2. The system for preventing the temperature of the furnace of the HIP from being too low according to claim 1, characterized by The distance between the thermocouple and the bottom end of the hot isostatic press is 80-110 cm.

3. The system for preventing the temperature of the furnace of the HIP from being too low according to claim 1, characterized by The heating assembly comprises a heating wire and a temperature sensor connected with the heating wire.

4. The system for preventing an excessively low furnace temperature of a hot isostatic press according to claim 3, characterized by The heating wire is arranged inside the furnace charge area of the hot isostatic press.

5. The system for preventing the temperature of the furnace of the HIP from being too low according to claim 3, characterized by The temperature sensor is respectively independently electrically connected with the temperature measuring signal input module and the temperature measuring signal output module.

6. The system for preventing an under-temperature of a HIP furnace according to claim 1, wherein The control unit further comprises a display screen and a switch assembly which are respectively independently connected with the PLC controller.

7. The system for preventing an under-temperature of a HIP furnace according to claim 1, wherein The PLC controller is used to acquire the temperature value detected by the temperature measuring assembly and display the temperature value on the display screen; when the temperature value is lower than the preset value, the heating assembly is started to be heated to the preset value.

8. The system for preventing an under-temperature of a HIP furnace according to claim 1, wherein The protection device system further comprises an alarm unit; The alarm unit is electrically connected with the PLC controller.

9. The system for preventing an excessively low furnace temperature of a hot isostatic press according to claim 8, characterized by The alarm unit comprises a siren.

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