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CN-119827257-B - Vacuum heating degassing pretreatment device and method

CN119827257BCN 119827257 BCN119827257 BCN 119827257BCN-119827257-B

Abstract

The invention provides a vacuum heating degassing pretreatment device and a vacuum heating degassing pretreatment method, and relates to the field of heat insulation materials. The vacuum heating degassing pretreatment device comprises a degassing container, a heating device, a heating power supply, a vacuumizing assembly and a vacuum unit, wherein a vacuum extraction opening and a material filling opening which are communicated with the inside of the degassing container are arranged on the degassing container, the heating device is arranged inside the degassing container, the heating power supply is electrically connected with the heating device, the vacuumizing assembly is at least provided with a vacuum gauge arranged on the outer side wall of the degassing container, the vacuum unit is arranged outside the degassing container, the vacuum unit is electrically connected with a vacuum controller, the vacuum controller is in signal connection with the vacuum gauge, the vacuum controller can control the opening and closing of the vacuum unit according to a vacuum degree signal fed back by the vacuum gauge, so that stable vacuum degree can be kept in the degassing container.

Inventors

  • YANG HUI
  • WU SHENG
  • YANG XIAOYAN

Assignees

  • 四川空分设备(集团)有限责任公司

Dates

Publication Date
20260508
Application Date
20250110

Claims (8)

  1. 1. A vacuum heating degassing pretreatment device, comprising: The device comprises a degassing container (100), wherein a vacuum extraction opening (111) and a material filling opening which are communicated with the inside of the degassing container (100) are arranged on the degassing container (100), and heating equipment is arranged inside the degassing container (100); A heating power supply (200) electrically connected to the heating device, and The vacuum pumping assembly (400) is at least provided with a vacuum gauge (410) arranged on the outer side wall of the degassing container (100) and a vacuum unit (420) arranged outside the degassing container (100), wherein the vacuum unit (420) is electrically connected with a vacuum controller (430), and the vacuum controller (430) is in signal connection with the vacuum gauge (410); The vacuum controller (430) can control the opening and closing of the vacuum unit (420) according to a vacuum degree signal fed back by the vacuum gauge (410), so that the stable vacuum degree can be maintained in the degassing container (100) to increase the gas removal amount released by the heating equipment for heating the vacuum multi-layer heat insulation material in the degassing container (100); The degassing container (100) is at least provided with an outer cylinder (140) and an inner cylinder (130), the inner cylinder (130) is rotatably arranged in the outer cylinder (140), the material filling openings comprise a plurality of second material filling openings (141) arranged on the outer cylinder (140) and a plurality of third material filling openings (131) arranged on the inner cylinder (130), the second material filling openings (141) are matched with the third material filling openings (131), the vacuum pumping opening (111) is arranged on the outer cylinder (140), the inner cylinder (130) is provided with a vacuum communication opening (135) matched with the vacuum pumping opening (111), and when the vacuum pumping opening (111) is aligned with the vacuum communication opening (135), the second material filling openings (141) and the third material filling openings (131) are mutually staggered, so that the interior of the degassing container (100) is sealed.
  2. 2. The vacuum heating degassing pretreatment device of claim 1, wherein the heating power supply (200) is electrically connected with a power supply controller (210), and the power supply controller (210) can adjust the current level of the heating power supply (200) input to the heating equipment.
  3. 3. The vacuum heating and degassing pretreatment device according to claim 2, further comprising a temperature detection assembly (300), wherein the temperature detection assembly (300) is provided with at least a temperature transmitter (310), the temperature transmitter (310) is electrically connected with a temperature controller (320), the temperature controller (320) is in signal connection with the power supply controller (210), and the temperature controller (320) can adjust the current level of the heating power supply (200) input into the heating equipment according to the temperature signal in the degassing container (100) fed back by the temperature detection assembly (300).
  4. 4. The vacuum heating degassing pretreatment device according to claim 1, wherein an annular chute (142) is arranged at the bottom of the outer cylinder (140), a flange (136) is arranged on the outer side wall of the inner cylinder (130), a convex ring (132) is arranged on the flange (136), and the convex ring (132) is slidably embedded in the annular chute (142) so that the outer cylinder (140) and the inner cylinder (130) can rotate relatively.
  5. 5. The vacuum heating degassing pretreatment device according to claim 1, wherein a control box (150) is arranged below the outer cylinder (140), a worm wheel (137) is arranged at the bottom of the inner cylinder (130), the worm wheel (137) stretches into the control box (150), a worm (151) is arranged in the control box (150), the worm (151) is meshed with the worm wheel (137), and a hand wheel (152) is arranged at one end, extending out of the control box (150), of the worm (151).
  6. 6. A vacuum heating degassing pretreatment method, characterized in that a vacuum heating degassing pretreatment device according to any one of claims 1 to 5 is used, comprising the steps of: S10, filling a plurality of layers of heat insulation materials into the degassing container (100) through the material filling opening, and closing the material filling opening; S20, setting vacuum degree, starting the heating power supply (200), and heating the multi-layer heat insulation material through the heating equipment to deflate the multi-layer heat insulation material; s30, detecting the real-time vacuum degree in the degassing container (100), and controlling the starting and closing of the vacuum unit (420) according to the difference value of the real-time vacuum degree and the set vacuum degree.
  7. 7. The vacuum heating degassing pretreatment method as set forth in claim 6, wherein the step S20 further comprises setting a heating temperature; The vacuum heating degassing pretreatment method further comprises the following steps: S40, detecting the real-time heating temperature in the degassing container (100), judging the difference value between the real-time heating temperature and the set heating temperature, and controlling the current input into the heating equipment by the heating power supply (200) according to the difference value between the real-time heating temperature and the set heating temperature so as to adjust the real-time heating temperature in the degassing container (100); wherein, the steps S30 and S40 have no fixed execution sequence.
  8. 8. The vacuum heating degassing pretreatment method as claimed in claim 6, wherein said step S30 further comprises that said vacuum controller (430) controls said vacuum unit (420) to be started when said real-time vacuum degree is lower than a set vacuum degree, and said vacuum controller (430) controls said vacuum unit (420) to be turned off when said real-time vacuum degree reaches a set vacuum degree.

Description

Vacuum heating degassing pretreatment device and method Technical Field The invention relates to the field of heat insulating materials, in particular to a vacuum heating degassing pretreatment device and a vacuum heating degassing pretreatment method. Background With the rapid development of the low-temperature heat-insulating storage and transportation industry, the research on various factors influencing the low-temperature heat-insulating storage and transportation process is also increasingly vigorous. The low-temperature heat insulation technology mainly comprises a plurality of forms such as stacking heat insulation, vacuum powder (fiber) heat insulation, high-vacuum multi-layer heat insulation, high-vacuum multi-screen heat insulation and the like. Among them, vacuum multi-layer insulation is particularly favored because of its excellent heat insulating properties and simple process, and has been widely used in the fields of small-sized low-temperature heat insulating containers, low-temperature tank cars, etc., and its application fields have been further expanded. Among the factors affecting the thermal insulating properties of the multiple layers, the degree of vacuum of the vacuum multiple layer insulating material used for high vacuum multiple layer insulation plays a very critical role. In the prior art, the pretreatment of the vacuum multi-layer heat insulating material is usually carried out by adopting a high-temperature baking mode and the like, so that the adsorbed gas in the vacuum multi-layer heat insulating material is desorbed as much as possible and faster, the gassing rate of the material is reduced, the vacuum multi-layer heat insulating material can reach higher vacuum degree when a system of low-temperature vacuum equipment is vacuumized, and the vacuum degree can be maintained for a longer time. However, the existing high-temperature baking and other modes are not thorough in pretreatment of the vacuum multilayer heat insulation material, and still more gas remains to influence the subsequent vacuumizing of the low-temperature vacuum equipment, so that the cost, the efficiency and the speed of the vacuumizing process of the vacuum multilayer heat insulation material are high. Disclosure of Invention The invention provides a vacuum heating degassing pretreatment device and a method capable of improving the degassing effect of a pretreatment process and improving the vacuum process of a low-temperature vacuum device of a vacuum multilayer heat insulation material, aiming at solving the problems that the existing high-temperature baking and other modes in the prior art can not thoroughly pretreat the vacuum multilayer heat insulation material, and still more residual gas can affect the vacuum pumping of the subsequent low-temperature vacuum device, so that the cost of the vacuum multilayer heat insulation material pumping process is high, the efficiency is low and the speed is low. The technical scheme adopted by the invention is as follows: a vacuum heating degassing pretreatment device, comprising: the device comprises a degassing container, a heating device and a heating device, wherein the degassing container is provided with a vacuum extraction opening and a material filling opening which are communicated with the inside of the degassing container; a heating power supply electrically connected with the heating device, and The vacuum pumping assembly is at least provided with a vacuum gauge arranged on the outer side wall of the degassing container and a vacuum unit arranged outside the degassing container, wherein the vacuum unit is electrically connected with a vacuum controller, and the vacuum controller is in signal connection with the vacuum gauge; The vacuum controller can control the opening and closing of the vacuum unit according to a vacuum degree signal fed back by the vacuum gauge, so that the stable vacuum degree can be kept in the degassing container, and the gas removal amount released by the heating equipment for heating the vacuum multi-layer heat insulation material in the degassing container is increased. Further, the material filling port is arranged at the top of the degassing container, a sealing cover is detachably arranged on the material filling port, and the vacuum pumping port is arranged on the sealing cover. Further, the heating power supply is electrically connected with a power supply controller, and the power supply controller can adjust the current magnitude of the heating power supply input to the heating equipment. The temperature detection assembly is provided with at least a temperature transmitter, the temperature transmitter is electrically connected with a temperature controller, the temperature controller is in signal connection with the power supply controller, and the temperature controller can adjust the current of the heating power supply input to the heating equipment according to the temperature signal in the degassing container fe