High-voltage heating pipe structure

Abstract

The utility model discloses a high-voltage heating tube structure, which comprises an electric heating element, a lead-out rod I, a lead-out rod II and a shell, the electric heating element is arranged in the shell, the end parts of the lead-out rod I and the lead-out rod II are respectively inserted into two ends of the shell and are respectively connected with the electric heating element, and an internal insulation spacer sleeve is sleeved between the shell and the electric heating element. The first leading-out rod and the second leading-out rod are sleeved with a first cold-end insulation spacer sleeve and a second cold-end insulation spacer sleeve respectively, and the first cold-end insulation spacer sleeve and the second cold-end insulation spacer sleeve are connected with the internal insulation spacer sleeve in a nested mode. The heating tube is characterized in that the first cold-end insulation spacer sleeve, the second cold-end insulation spacer sleeve and the internal insulation spacer sleeve which are made of boron nitride materials are used as insulators and are matched with one another, so that the heating tube has the characteristics of high electrical insulating property and high heat resistance, and meanwhile, the damage of parts caused by vibration bending in the transportation and installation process can be effectively prevented; it can be guaranteed that the heating pipe stably works in the high-temperature and high-voltage working environment, and the long service life is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field related to electric energy storage, and in particular to a high-voltage heating tube structure. Background Art

[0002] Heating tubes are a type of heating device widely used in industrial and household equipment. Usually, an electric heating element is installed inside the heating tube, which generates heat by passing electricity to heat the fluid. However, traditional heating tubes are prone to insufficient electrical insulation in high-voltage electrical environments, which will affect the performance and service life of the heating tube. Utility Model Content

[0003] The purpose of the utility model is to overcome the above-mentioned inadequacies and provide a high-voltage heating tube structure which can directly operate under 6.3kV / 10kV / 35kV AC high voltage electricity and uses boron nitride as an insulator inside.

[0004] The technical solution adopted by the utility model to achieve the above-mentioned purpose is:

[0005] A high-voltage heating tube structure comprises an electric heating element, a lead-out rod 1, a lead-out rod 2, and an outer shell, wherein the electric heating element is arranged in the outer shell, the lead-out rod 1 is inserted in one end of the outer shell and connected to one end of the electric heating element, the lead-out rod 2 is inserted in the other end of the outer shell and connected to the other end of the electric heating element, an internal insulating spacer sleeve is sleeved between the outer shell and the electric heating element, a cold end insulating spacer sleeve 1 is sleeved on the lead-out rod 1, one end of the cold end insulating spacer sleeve 1 is nested and connected with the internal insulating spacer sleeve, and a cold end insulating spacer sleeve 2 is sleeved on the lead-out rod 2, one end of the cold end insulating spacer sleeve 2 is nested and connected with the internal insulating spacer sleeve.

[0006] The outer diameter of the internal insulating spacer sleeve is stepped, one end of the cold end insulating spacer sleeve 1 is nested in the large diameter end of the internal insulating spacer sleeve, and one end of the cold end insulating spacer sleeve 2 is nested between the small diameter end of the internal insulating spacer sleeve and the outer shell.

[0007] At least two inner insulating spacer sleeves which are nested and connected in sequence are arranged in the outer shell.

[0008] The lead-out rod 1 is installed with a fastener 1, and the cold end insulating spacer sleeve 1 is pressed onto the shell through the fastener 1; the lead-out rod 2 is installed with a fastener 2, and the cold end insulating spacer sleeve 2 is pressed onto the shell through the fastener 2.

[0009] The cold end insulating spacer sleeve 1, the cold end insulating spacer sleeve 2 and the internal insulating spacer sleeve are all made of boron nitride material.

[0010] The cold end insulating spacer sleeve 1 is provided with a flange 1, and one end of the outer shell and the inner insulating spacer sleeve contacts with the flange 1 and is limited by the flange 1. The cold end insulating spacer sleeve 2 is provided with a flange 2, and the other end of the outer shell and the inner insulating spacer sleeve contacts with the flange 2 and is limited by the flange 2.

[0011] The space formed between the internal insulating spacer sleeve and the first lead-out rod and the second lead-out rod is filled with an inert gas.

[0012] A seal is provided between one end of the cold-end insulating spacer sleeve 1 and the lead-out rod 1, and a seal is provided between the other end of the cold-end insulating spacer sleeve 1 and the outer shell and the internal insulating spacer sleeve; a seal is provided between one end of the cold-end insulating spacer sleeve 2 and the lead-out rod 2, and a seal is provided between the other end of the cold-end insulating spacer sleeve 2 and the outer shell and the internal insulating spacer sleeve.

[0013] The utility model is characterized in that a cold end insulating spacer sleeve 1, a cold end insulating spacer sleeve 2 and an internal insulating spacer sleeve made of boron nitride material are used as insulators and cooperate with each other to make the heating tube have high electrical insulation and high heat resistance, and can effectively prevent damage to parts caused by vibration and bending during transportation and installation, etc., can ensure that the heating tube can work stably in a high temperature and high voltage working environment, and has a long service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the utility model.

[0015] Figure 2 It is a structural schematic diagram of a cold end insulating spacer sleeve 1 of the utility model.

[0016] Figure 3 It is a structural schematic diagram of the internal insulating spacer sleeve of the utility model.

[0017] Figure 4 It is a structural schematic diagram of the cold end insulating spacer sleeve 2 of the utility model.

[0018] Among them: 1. cold end insulating spacer sleeve 11, flange 1 2, internal insulating spacer sleeve 3, cold end insulating spacer sleeve 2 31, flange 2 4, shell 5, lead rod 1 6, electric heating element 7, lead rod 2 8, fastener 1 9, fastener 2. DETAILED DESCRIPTION

[0019] like Figure 1-4As shown, the utility model is a high-voltage heating tube structure, including an electric heating element 6, a lead rod 1 5, a lead rod 2 7, and a shell 4. The electric heating element 6 can be made of an alloy material with excellent thermal conductivity (such as a nickel-chromium alloy), so that the heating tube has a higher heating efficiency. The shell 4, the lead rod 1 5, and the lead rod 2 7 can be made of a high-temperature resistant and corrosion-resistant metal material (such as stainless steel), so that the heating tube can work stably in a high-voltage electrical working environment and have a longer service life. The electric heating element 6 is arranged in the shell 4, the lead rod 1 5 is inserted in one end of the shell 4 and connected to one end of the electric heating element 6, the lead rod 2 7 is inserted in the other end of the shell 4 and connected to the other end of the electric heating element 6, and the outer An internal insulating spacer sleeve 2 is mounted between the shell 4 and the electric heating element 6. The outer diameter of the internal insulating spacer sleeve 2 is stepped. The number of the internal insulating spacer sleeves 2 can be selected as one, two, three or more according to the actual working conditions. When multiple internal insulating spacer sleeves 2 are provided, adjacent internal insulating spacer sleeves 2 are nested and connected in sequence. A cold end insulating spacer sleeve 1 is mounted on the lead-out rod 5. A flange 11 is arranged on the cold end insulating spacer sleeve 1. One end of the shell 4 and the internal insulating spacer sleeve 2 is in contact with the flange 11 and is limited by the flange 11. The cold end insulating spacer sleeve 1 is pressed against the shell 4 and the internal insulating spacer sleeve 2 by a fastener 8. A cold end insulating spacer sleeve 23 is mounted on the lead-out rod 7. The cold end insulating spacer sleeve 24 is provided with a flange 11. A flange 2 31 is provided on the spacing sleeve 2 3, and the other end of the outer shell 4 and the internal insulating spacing sleeve 2 is in contact with the flange 2 31 and is limited by the flange 2 31. The cold end insulating spacing sleeve 2 3 is pressed on the outer shell 4 and the internal insulating spacing sleeve 2 by the fastener 2 9. The space formed between the internal insulating spacing sleeve 2 and the lead-out rod 1 5 and the lead-out rod 2 7 is filled with an inert gas. The inert gas can be nitrogen or argon, which plays an anti-oxidation role. A seal is provided between one end of the cold end insulating spacing sleeve 1 and the lead-out rod 1 5, and a seal is provided between the flange 11 at the other end of the cold end insulating spacing sleeve 1 and the outer shell 4 and the internal insulating spacing sleeve 2; a seal is provided between one end of the cold end insulating spacing sleeve 2 3 and the lead-out rod 2 7. A seal is arranged between the flange 231 of the other end of the cold end insulating spacer sleeve 23 and the outer shell 4 and the inner insulating spacer sleeve 2. The above seals are all made of silicone to achieve the purpose of sealing. One end of the cold end insulating spacer sleeve 1 is nested in the large diameter end of the inner insulating spacer sleeve 2, and one end of the cold end insulating spacer sleeve 23 is nested between the small diameter end of the inner insulating spacer sleeve 2 and the outer shell 4. The cold end insulating spacer sleeve 1, the cold end insulating spacer sleeve 23 and the inner insulating spacer sleeve 2 are all made of boron nitride material. The gap between the electric heating element 6 and the outer shell 4 is filled with the cold end insulating spacer sleeve 1, the inner insulating spacer sleeve 2 and the cold end insulating spacer sleeve 23 boron nitride insulating material, which increases the insulation performance and enables the heating tube to be heated under AC 6.It can work normally under 3kV / 10kV / 35kV voltage, and does not require multi-stage voltage transformation, which greatly reduces the cost of electrical supporting equipment. In addition, the cold end insulation spacer sleeve 1, cold end insulation spacer sleeve 2, and internal insulation spacer sleeve 2 made of boron nitride insulation material have a long creepage distance, and the nesting length can be increased arbitrarily, which can effectively prevent damage to parts caused by vibration and bending during transportation and installation. The heating tube can have the characteristics of high electrical insulation and high heat resistance, and can effectively isolate the electric heating element from the shell to avoid short circuit or leakage in high temperature and high voltage working environment. .

[0020] The above description is only a preferred specific implementation manner of the present utility model, but the protection scope of the present utility model is not limited thereto. Any technician familiar with the technical field can make equivalent substitutions or changes within the technical scope disclosed by the present invention according to the technical scheme and inventive concept of the present utility model, which should be covered by the protection scope of the present utility model.

Claims

1. A high voltage heating tube structure, characterized in that: It includes an electric heating element, a lead-out rod 1, a lead-out rod 2, and a shell. The electric heating element is arranged in the shell. The lead-out rod 1 is inserted in one end of the shell and connected to one end of the electric heating element. The lead-out rod 2 is inserted in the other end of the shell and connected to the other end of the electric heating element. An internal insulating spacer sleeve is set between the shell and the electric heating element. The lead-out rod 1 is set with a cold end insulating spacer sleeve 1, and one end of the cold end insulating spacer sleeve 1 is nested and connected with the internal insulating spacer sleeve. The lead-out rod 2 is set with a cold end insulating spacer sleeve 2, and one end of the cold end insulating spacer sleeve 2 is nested and connected with the internal insulating spacer sleeve.

2. A high voltage heating tube structure as claimed in claim 1, characterized in that: The outer diameter of the internal insulating spacer sleeve is stepped, one end of the cold end insulating spacer sleeve 1 is nested in the large diameter end of the internal insulating spacer sleeve, and one end of the cold end insulating spacer sleeve 2 is nested between the small diameter end of the internal insulating spacer sleeve and the outer shell.

3. A high voltage heating tube structure as claimed in claim 1 or 2, characterized in that: At least two inner insulating spacer sleeves which are nested and connected in sequence are arranged in the outer shell.

4. A high voltage heating tube structure as claimed in claim 1 or 2, characterized in that: The lead-out rod 1 is installed with a fastener 1, and the cold end insulating spacer sleeve 1 is pressed onto the shell through the fastener 1; the lead-out rod 2 is installed with a fastener 2, and the cold end insulating spacer sleeve 2 is pressed onto the shell through the fastener 2.

5. A high voltage heating tube structure as claimed in claim 1 or 2, characterized in that: The cold end insulating spacer sleeve 1, the cold end insulating spacer sleeve 2 and the internal insulating spacer sleeve are all made of boron nitride material.

6. A high voltage heating tube structure as claimed in claim 1 or 2, characterized in that: The cold end insulating spacer sleeve 1 is provided with a flange 1, and one end of the outer shell and the inner insulating spacer sleeve contacts with the flange 1 and is limited by the flange 1. The cold end insulating spacer sleeve 2 is provided with a flange 2, and the other end of the outer shell and the inner insulating spacer sleeve contacts with the flange 2 and is limited by the flange 2.

7. A high voltage heating tube structure as claimed in claim 1 or 2, characterized in that: The space formed between the internal insulating spacer sleeve and the first lead-out rod and the second lead-out rod is filled with an inert gas.

8. A high voltage heating tube structure as claimed in claim 1 or 2, characterized in that: A seal is provided between one end of the cold-end insulating spacer sleeve 1 and the lead-out rod 1, and a seal is provided between the other end of the cold-end insulating spacer sleeve 1 and the outer shell and the internal insulating spacer sleeve; a seal is provided between one end of the cold-end insulating spacer sleeve 2 and the lead-out rod 2, and a seal is provided between the other end of the cold-end insulating spacer sleeve 2 and the outer shell and the internal insulating spacer sleeve.

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