Vacuum switch heat preservation device

Abstract

The utility model discloses a vacuum switch thermal insulation device, and relates to the technical field of vacuum switch thermal insulation, the vacuum switch thermal insulation device comprises a vacuum chamber, a vacuum switch body, a ribbon heater and a ribbon, the vacuum switch body is installed outside the vacuum chamber, and a contact of the vacuum switch body is fixed inside the vacuum chamber. The vacuum switch body is used for detecting the vacuum degree of the vacuum chamber, the electric heating belt is wound outside the vacuum switch body, and the ribbon is bundled on the electric heating belt so as to fix the electric heating belt on the vacuum switch body. According to the technical scheme of the utility model, the ribbon heater is wound on the vacuum switch body, then the ribbon heater is fixed by the ribbon, and the ribbon heater is used for heating the vacuum switch body, so that the vacuum switch body is ensured to be heated uniformly and heated quickly, and the requirement of heat preservation is further met; and normal work of the vacuum switch body is ensured.

Description

Vacuum switch heat preservation device Technical Field

[0001] This utility model relates to the field of vacuum switch insulation technology, and in particular to a vacuum switch insulation device. Background Technology

[0002] The transition chamber in the glass coating line requires evacuation and venting, and vacuum switches are commonly used as safety switches for the vacuum system. Specifically, when the vacuum level in the system is <1.3*10³, the vacuum switch is closed, outputting 1; when the vacuum level is ≥1.3*10³, the vacuum switch is open, outputting 0. The control program identifies the state of the vacuum switch and controls whether to open the door between the transition chamber and the atmosphere.

[0003] When operating on a glass coating line, the vacuum switch is significantly affected by ambient temperature in winter. When the temperature drops below 10℃ and the vacuum level is ≥1.3*10³, it takes several seconds for the vacuum switch to change from 1 to 0, preventing the door between the transition chamber and the atmosphere from opening promptly and increasing the glass scrap rate in the coating line. Current technology addresses the impact of low temperatures on the vacuum switch by enclosing it in an iron box and then using a 100W incandescent lamp for heating and insulation.

[0004] However, because incandescent lamps operate at low temperatures and are unstable, they are prone to burning out, causing vacuum switches to heat up slowly and respond to signals slowly, making it difficult to ensure the normal operation of the vacuum switches. Summary of the Invention

[0005] The main purpose of this invention is to provide a vacuum switch heat preservation device, which aims to solve the problems of slow heating and slow signal response of vacuum switches, making it difficult to ensure the normal operation of vacuum switches.

[0006] To achieve the above objectives, the vacuum switch heat preservation device proposed in this utility model includes:

[0007] Vacuum chamber;

[0008] A vacuum switch body is installed outside the vacuum chamber, and the contacts of the vacuum switch body are fixed inside the vacuum chamber. The vacuum switch body is used to detect the vacuum level of the vacuum chamber.

[0009] An electric heating tape, said electric heating tape being wound around the exterior of the vacuum switch body; and

[0010] Cable ties are used to secure the heating tape to the vacuum switch body.

[0011] In some embodiments, the vacuum switch insulation device further includes a power supply, and the heating tape is electrically connected to the power supply.

[0012] In some embodiments, the vacuum switch insulation device further includes a control cabinet, and the power supply is located in the control cabinet.

[0013] In some embodiments, the vacuum switch insulation device further includes a terminal block, to which the connector of the heating tape is plugged, and the terminal block is electrically connected to the power supply via a wire.

[0014] In some embodiments, the vacuum switch insulation device further includes a temperature control switch, which is located in the control cabinet. The input terminal of the temperature control switch is connected in series with the heating tape, and the output terminal of the temperature control switch is connected in series with the power supply.

[0015] In some embodiments, the electric heating tape is wound more than 3 times.

[0016] In some embodiments, the heating tape is wound in a parallel spiral around the vacuum switch body, so that the heating tape is spirally wound.

[0017] In some embodiments, the heating tape is a 24V flame-retardant heating tape.

[0018] In some embodiments, the number of cable ties is two, and the two cable ties are cross-tied to the heating tape.

[0019] In some implementations, the cable ties are all detachable cable ties.

[0020] The technical solution of this utility model uses an electric heating tape wrapped around the vacuum switch body and then fixed with cable ties. The electric heating tape is used to heat the vacuum switch body to ensure that the vacuum switch body is heated evenly and heats up quickly, thereby meeting the heat preservation requirements and ensuring the normal operation of the vacuum switch body. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0022] Figure 1 is a structural schematic diagram of an embodiment of the vacuum switch heat preservation device provided by this utility model;

[0023] Figure 2 is a circuit diagram of an embodiment of the vacuum switch heat preservation device provided by this utility model.

[0024] Explanation of icon numbers:

[0025] 100. Vacuum switch insulation device; 10. Vacuum chamber; 20. Vacuum switch body; 30. Heating tape; 40. Cable tie; 50. Power supply; 60. Control cabinet; 70. Terminal block; 80. Temperature control switch.

[0026] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0028] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0029] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0030] When operating on a glass coating line, the vacuum switch is significantly affected by ambient temperature in winter. When the temperature drops below 10℃ and the vacuum level is ≥1.3*10³, it takes several seconds for the vacuum switch to change from 1 to 0, preventing the door between the transition chamber and the atmosphere from opening promptly and increasing the glass scrap rate in the coating line. Current technology addresses the impact of low temperatures on the vacuum switch by enclosing it in an iron box and then using a 100W incandescent lamp for heating and insulation.

[0031] However, because incandescent lamps operate at low temperatures and are unstable, they are prone to burning out, causing vacuum switches to heat up slowly and respond to signals slowly, making it difficult to ensure the normal operation of the vacuum switches.

[0032] This utility model proposes a vacuum switch heat preservation device 100. Referring to Figure 1, in one embodiment of this utility model, the vacuum switch heat preservation device 100 includes:

[0033] Vacuum chamber 10;

[0034] A vacuum switch body 20 is installed outside the vacuum chamber 10, and the contacts of the vacuum switch body 20 are fixed inside the vacuum chamber 10. The vacuum switch body 20 is used to detect the vacuum level of the vacuum chamber 10.

[0035] Electric heating tape 30, said electric heating tape 30 being wrapped around the outside of the vacuum switch body 20; and

[0036] Cable ties 40 are used to secure the heating tape 30 to the vacuum switch body 20.

[0037] The vacuum switch body 20 can be an existing vacuum switch. The vacuum switch body 20 is used to detect the vacuum level of the vacuum chamber 10.

[0038] The technical solution of this utility model involves wrapping an electric heating tape 30 around the vacuum switch body 20 and then fixing the electric heating tape 30 with cable ties 40. The electric heating tape 30 is used to heat the vacuum switch body 20 to ensure that the vacuum switch body 20 is heated evenly and that the vacuum switch body 20 heats up quickly, thereby meeting the heat preservation requirements and ensuring the normal operation of the vacuum switch body 20.

[0039] In one embodiment, the vacuum switch body 20 is heated and kept warm by the heating tape 30 to maintain normal operation. When the vacuum degree in the vacuum chamber 10 reaches ≥1.3*10³, the state of the vacuum switch body 20 can change rapidly. The control system can identify the state of the vacuum switch body 20 and promptly control the opening of the door between the transition chamber and the atmosphere in the glass coating line, thereby reducing the glass scrap rate.

[0040] To enable the heating tape 30 to be energized and heated, the vacuum switch insulation device 100 also includes a power supply 50, and the heating tape 30 is electrically connected to the power supply 50.

[0041] The heating tape 30 is connected to the power supply 50. When the heating tape 30 is energized, it heats the vacuum switch body 20, reducing the impact of low temperature on the vacuum switch body 20 and ensuring the normal operation of the vacuum switch body 20.

[0042] In one embodiment, the vacuum switch insulation device 100 further includes a control cabinet 60, and the power supply 50 is disposed in the control cabinet 60, which can be used to house the power supply 50.

[0043] The vacuum switch insulation device 100 further includes a terminal block 70. The connector of the heating tape 30 is inserted into the terminal block 70. The terminal block 70 is electrically connected to the power supply 50 via a wire to facilitate the connection between the heating tape 30 and the power supply 50. The terminal block 70 is pre-connected to the power supply 50 inside the control cabinet 60. After the heating tape 30 is wound onto the vacuum switch body 20, the connector of the heating tape 30 is inserted into the terminal block 70, and the heating tape 30 is energized by the power supply 50.

[0044] Please refer to Figures 1 and 2. The vacuum switch insulation device 100 also includes a temperature control switch 80, which is located in the control cabinet 60. The input terminal of the temperature control switch 80 is connected in series with the heating tape, and the output terminal of the temperature control switch 80 is connected in series with the power supply 50.

[0045] The temperature control switch 80 can be used to detect the temperature of the external environment. When the external environment is too low, the temperature control switch 80 is turned on, the heating tape 30 and the power supply 50 are energized and heated. The heating tape 30 heats the vacuum switch body 20, thereby ensuring that the vacuum switch body 20 can work normally in a low-temperature environment.

[0046] In one embodiment, when the temperature is set below 10°C, the temperature control switch 80 is turned on to supply power to the heating tape 30, thereby achieving automatic heating.

[0047] The temperature control switch 80 and the power supply 50 are installed inside the control cabinet 60 to reduce the clutter of the temperature control switch 80 and the power supply 50 outside the vacuum chamber 10. The terminal block 70 is connected to the temperature control switch 80 and the power supply 50 of the control cabinet 60 via wires. The power connection of the heating tape 30 is completed by directly plugging the connector of the heating tape 30 into the terminal block 70.

[0048] To enable the vacuum switch body 20 to heat up quickly, the heating tape 30 is wound with more than 3 turns. In one embodiment, the heating tape 30 can be wound with 4 turns, 5 turns, etc.

[0049] The heating tape 30 is wound in a parallel spiral around the vacuum switch body 20, so that the heating tape 30 is in a spiral wound shape.

[0050] The heating tape 30 is spirally wound around the vacuum switch body 20 to ensure the safety of the heating tape 30 when connected to electricity. Furthermore, the heating tape 30 is spirally wound parallel to the vacuum switch body 20, ensuring uniform heating and rapid temperature rise, thereby reducing the impact of low-temperature environments on the vacuum switch body 20.

[0051] In one embodiment, the heating tape 30 is a 24V flame-retardant heating tape 30. By wrapping and installing the 24V flame-retardant heating tape 30 around the vacuum switch body 20, the vacuum switch body 20 is heated evenly, thereby achieving the required heat preservation.

[0052] In order to secure the heating tape 30 to the vacuum switch body 20 and prevent the heating tape 30 from coming loose, two cable ties 40 are used, and the two cable ties 40 are cross-tied to the heating tape 30.

[0053] To facilitate replacement of the heating cable 30, all cable ties 40 are detachable. The cable ties 40 can be removed, and the connector of the heating cable 30 can be disconnected from the terminal block 70 to detach the heating cable 30 from the vacuum switch body 20.

[0054] Then, the new heating tape 30 can be wrapped around the vacuum switch body 20, and the new heating tape 30 can be tied to the vacuum switch body 20 with the cable tie 40. Finally, the connector of the new heating tape 30 can be plugged into the terminal block 70 to complete the power connection of the new heating tape 30.

[0055] The above description is merely an exemplary embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A vacuum switch heat preservation device, characterized in that, include: Vacuum chamber; A vacuum switch body, which is installed outside the vacuum chamber and whose contacts are fixed inside the vacuum chamber, is used to detect the vacuum level of the vacuum chamber; an electric heating tape, which is wrapped around the outside of the vacuum switch body; and a cable tie, which is tied to the electric heating tape to fix the electric heating tape to the vacuum switch body.

2. The vacuum switch heat preservation device as described in claim 1, characterized in that, The vacuum switch insulation device also includes a power supply, and the heating tape is electrically connected to the power supply.

3. The vacuum switch heat preservation device as described in claim 2, characterized in that, The vacuum switch insulation device also includes a control cabinet, and the power supply is located in the control cabinet.

4. The vacuum switch heat preservation device as described in claim 3, characterized in that, The vacuum switch insulation device also includes a terminal block, the connector of the heating tape is plugged into the terminal block, and the terminal block is electrically connected to the power supply through a wire.

5. The vacuum switch heat preservation device as described in claim 3, characterized in that, The vacuum switch insulation device also includes a temperature control switch, which is located in the control cabinet. The input terminal of the temperature control switch is connected in series with the heating tape, and the output terminal of the temperature control switch is connected in series with the power supply.

6. The vacuum switch heat preservation device as described in any one of claims 1 to 5, characterized in that, The electric heating tape has more than 3 turns.

7. The vacuum switch heat preservation device as described in claim 6, characterized in that, The heating tape is wound in a parallel spiral around the vacuum switch body, so that the heating tape is in a spiral shape.

8. The vacuum switch heat preservation device as described in any one of claims 1 to 5, characterized in that, The heating tape is a 24V flame-retardant heating tape.

9. The vacuum switch heat preservation device as described in any one of claims 1 to 5, characterized in that, The cable ties are two in number, and the two cable ties are cross-tied to the heating cable.

10. The vacuum switch heat preservation device as described in claim 8, characterized in that, All cable ties are detachable.

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