CN201781638U - Electric heating tube - Google Patents

Electric heating tube Download PDF

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Publication number
CN201781638U
CN201781638U CN2010202999648U CN201020299964U CN201781638U CN 201781638 U CN201781638 U CN 201781638U CN 2010202999648 U CN2010202999648 U CN 2010202999648U CN 201020299964 U CN201020299964 U CN 201020299964U CN 201781638 U CN201781638 U CN 201781638U
Authority
CN
China
Prior art keywords
heating wire
tube
electric heating
rod
eduction rod
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN2010202999648U
Other languages
Chinese (zh)
Inventor
刘源
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SUZHOU INDUSTRIAL PARK ZONE JINYING ELECTRONIC TECHNOLOGY Co Ltd
Original Assignee
SUZHOU INDUSTRIAL PARK ZONE JINYING ELECTRONIC TECHNOLOGY Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by SUZHOU INDUSTRIAL PARK ZONE JINYING ELECTRONIC TECHNOLOGY Co Ltd filed Critical SUZHOU INDUSTRIAL PARK ZONE JINYING ELECTRONIC TECHNOLOGY Co Ltd
Priority to CN2010202999648U priority Critical patent/CN201781638U/en
Application granted granted Critical
Publication of CN201781638U publication Critical patent/CN201781638U/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model discloses an electric heating tube, which comprises an outer tube, and an electric heating wire and a lead-out rod which are arranged in the outer tube, wherein magnesium oxide powder is filled between the outer tube and the electric heating wire, the lead-out rod is provided with a cylindrical section, one end of the cylindrical section extends outwards to form a cone section with a gradually reduced cross section, one end of the electric heating wire is sleeved on the cylindrical section of the lead-out rod, the cone section is surrounded by the electric heating wire, a gap exists between the cone section on the lead-out rod and the electric heating wire, and the gap is also filled with the magnesium oxide powder. The lead-out rod of the electric heating tube is provided with the cone section, and can increase the depth of the lead-out rod inserted into the high-temperature magnesium oxide powder under the condition of ensuring the length of the effective working area of the electric heating wire so as to better fix the lead-out rod and position the electric heating wire, and damage on the electric heating wire in the process of shrinking the tube is not caused easily.

Description

A kind of electrothermal tube
Technical field
The utility model relates to a kind of heating element, more particularly, relates to a kind of electrothermal tube that is used for liquid heat.
Background technology
The efficient heat generation length of heating wire has determined its operating efficiency in the electrothermal tube, eduction rod often all is columned in traditional electrothermal tube, and in order better to locate heating wire between two parties, have certain length and make eduction rod insertion high-temperature oxydation magnesium powder have certain degree of depth with regard to the heating wire that requires to be wrapped on the eduction rod, and the distribution that is wrapped on the eduction rod does not have heating function, so just reduce the effective length of heating wire greatly, reduced the operating efficiency of heating wire; And,, outer tube is being carried out very easily heating wire is caused damage in the draw process because heating wire closely is wrapped on the eduction rod.
The utility model content
The purpose of this utility model provides a kind of electrothermal tube, and it is provided with the eduction rod that an end is a conical section.
For solving the problems of the technologies described above, the utility model adopts following technical scheme:
A kind of electrothermal tube, comprise outer tube, be arranged on heating wire and eduction rod in the outer tube, be filled with magnesia powder between described outer tube and the described heating wire, described eduction rod has cylindrical section, one end of described cylindrical section stretches out and forms the diminishing conical section in cross section, one end of described heating wire is enclosed within on the cylindrical section of described eduction rod and described conical section is centered on by described heating wire, there is the gap between conical section on the described eduction rod and the described heating wire, also is filled with magnesia powder in this gap.
Preferably, this electrothermal tube comprises fuse, and the end face away from an end of described heating wire on the described eduction rod is provided with the location and installation hole, and an end of described fuse is fixedly mounted in the described location and installation hole.
The beneficial effects of the utility model are: the eduction rod in the electrothermal tube of the present utility model has cylindrical section and conical section, heating wire is wrapped on the part cylindrical section, and conical section is centered on by heating wire, and count the effective service area that is heating wire from the line of demarcation between cylindrical section and the conical section, owing to have the gap that is full of magnesia powder between the outside wall surface of conical section and the heating wire, when outer tube is carried out the draw, can not be damaged to effective service area of heating wire, and under effective service area of the equal length that guarantees heating wire, the eduction rod of conical section design is bigger more than the length that simple cylindrical eduction rod can insert high-temperature oxydation magnesium powder, just can be better fixing eduction rod, and then strengthen the location placed in the middle of heating wire.
Description of drawings
Accompanying drawing 1 is the structural representation of electrothermal tube of the present utility model;
Accompanying drawing 2 is vertical cross-sectional schematic of the eduction rod in the electrothermal tube of the present utility model;
Accompanying drawing 3 is for having added the structural representation of fuse in the electrothermal tube of the present utility model.
In the accompanying drawing: 1, outer tube; 2, heating wire; 3, eduction rod; 4, fuse;
5, high-temperature oxydation magnesium powder; 6, attached eduction rod; 7, insulating case.
Embodiment
Below in conjunction with embodiment shown in the drawings the technical solution of the utility model is done following detailed description the in detail:
Embodiment one: as shown in Figure 1, a kind of electrothermal tube comprises outer tube 1, be provided with the heating wire 2 in the outer tube 1, this eduction rod 3 has cylindrical section and conical section, form the line of demarcation between cylindrical section and the conical section, diameter to the cross section of end eduction rod 3 reduces gradually from the line of demarcation on conical section, the two ends of heating wire 2 are enclosed within respectively on the part cylindrical section of two eduction rods 3, and conical section is enclosed between the heating wire 2, form the gap between heating wire 2 and the conical section, this gap, two places, all be filled with high-temperature oxydation magnesium powder 5 between outer tube 1 and the heating wire 2, be with annular rubber ring on the eduction rod 3, the outer wall of this annular rubber ring closely cooperates mutually with the inwall of outer tube, the inboard of this annular rubber ring is provided with the indenture that caves inward relatively on outer tube 1, this indenture is located annular rubber ring, thereby locate eduction rod 3 between two parties, and then location heating wire 2; Under the situation of the length of the effective service area that guarantees heating wire 2, the length of the conical section of eduction rod 3 will can be inserted in the high-temperature oxydation magnesium powder 5 deeply, reached better the fixedly purpose of eduction rod 3.
Embodiment two: as shown in Figure 3, electrothermal tube among this embodiment end away from heating wire 2 at two eduction rods 3 on the basis of embodiment one has added fuse 4 respectively, Given this, as shown in Figure 2, on the end face away from an end of heating wire 2 of eduction rod 3, offer the location and installation hole, one end of fuse 4 is fixedly mounted in this location and installation hole, the other end of fuse 4 is fixedly connected with attached eduction rod 6, the free end of this attached eduction rod 6 is connected in the external circuit, the outer cover of fuse 4 is provided with insulating case 7, the outer wall of insulating case 7 closely cooperates mutually with the inwall of outer tube 1, when outer tube 1 is carried out the draw fuse 4 is protected; With same among the embodiment one, under the situation of the length of the effective service area that guarantees heating wire 2, the length of the conical section of eduction rod 3 will can be inserted in the high-temperature oxydation magnesium powder 5 deeply, reached better the fixedly purpose of eduction rod 3.
The foregoing description only is explanation technical conceive of the present utility model and characteristics, and its purpose is to allow the personage who is familiar with this technology can understand content of the present utility model and enforcement according to this, can not limit protection range of the present utility model with this.All equivalences of being done according to the utility model spirit change or modify, and all should be encompassed within the protection range of the present utility model.

Claims (2)

1. electrothermal tube, comprise outer tube, be arranged on heating wire and eduction rod in the outer tube, be filled with magnesia powder between described outer tube and the described heating wire, it is characterized in that: described eduction rod has cylindrical section, one end of described cylindrical section stretches out and forms the diminishing conical section in cross section, one end of described heating wire is enclosed within on the cylindrical section of described eduction rod and described conical section is centered on by described heating wire, there is the gap between conical section on the described eduction rod and the described heating wire, also is filled with magnesia powder in this gap.
2. a kind of electrothermal tube according to claim 1, it is characterized in that: this electrothermal tube comprises fuse, end face away from an end of described heating wire on the described eduction rod is provided with the location and installation hole, and an end of described fuse is fixedly mounted in the described location and installation hole.
CN2010202999648U 2010-08-23 2010-08-23 Electric heating tube Expired - Fee Related CN201781638U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2010202999648U CN201781638U (en) 2010-08-23 2010-08-23 Electric heating tube

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2010202999648U CN201781638U (en) 2010-08-23 2010-08-23 Electric heating tube

Publications (1)

Publication Number Publication Date
CN201781638U true CN201781638U (en) 2011-03-30

Family

ID=43794836

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2010202999648U Expired - Fee Related CN201781638U (en) 2010-08-23 2010-08-23 Electric heating tube

Country Status (1)

Country Link
CN (1) CN201781638U (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104780628A (en) * 2015-01-27 2015-07-15 上海华族实业有限公司 Thermal fusing type self-protective electric heating pipe
CN104994604A (en) * 2015-07-07 2015-10-21 芜湖华族实业有限公司 Novel multi-layer heat radiation structure of heater
CN104994607A (en) * 2015-07-07 2015-10-21 芜湖华族实业有限公司 Positive-temperature-coefficient-thermistor electric heater
CN105722259A (en) * 2016-04-07 2016-06-29 安徽永成电气有限公司 Metal magnesium oxide electric heating tube with fault light device
CN109673071A (en) * 2018-12-11 2019-04-23 安徽苏立科技股份有限公司 A kind of novel single fusing heating pipe processing technique

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104780628A (en) * 2015-01-27 2015-07-15 上海华族实业有限公司 Thermal fusing type self-protective electric heating pipe
CN104780628B (en) * 2015-01-27 2017-01-18 上海华族实业有限公司 Thermal fusing type self-protective electric heating pipe
CN104994604A (en) * 2015-07-07 2015-10-21 芜湖华族实业有限公司 Novel multi-layer heat radiation structure of heater
CN104994607A (en) * 2015-07-07 2015-10-21 芜湖华族实业有限公司 Positive-temperature-coefficient-thermistor electric heater
CN105722259A (en) * 2016-04-07 2016-06-29 安徽永成电气有限公司 Metal magnesium oxide electric heating tube with fault light device
CN109673071A (en) * 2018-12-11 2019-04-23 安徽苏立科技股份有限公司 A kind of novel single fusing heating pipe processing technique

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Date Code Title Description
GR01 Patent grant
C14 Grant of patent or utility model
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20110330

Termination date: 20120823

C17 Cessation of patent right