CN212649731U - Single-end electric heating tube structure with built-in temperature probe - Google Patents
Single-end electric heating tube structure with built-in temperature probe Download PDFInfo
- Publication number
- CN212649731U CN212649731U CN202022030686.2U CN202022030686U CN212649731U CN 212649731 U CN212649731 U CN 212649731U CN 202022030686 U CN202022030686 U CN 202022030686U CN 212649731 U CN212649731 U CN 212649731U
- Authority
- CN
- China
- Prior art keywords
- tube
- temperature probe
- sheath
- electric heating
- built
- 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.)
- Active
Links
Images
Landscapes
- Resistance Heating (AREA)
Abstract
The utility model belongs to the technical field of the heater, concretely relates to single-end electric heating tube structure of built-in temperature probe. The stainless steel tube comprises a stainless steel tube subjected to diameter shrinkage treatment, wherein a resistance wire is arranged in the tube body and filled with magnesium oxide powder, two ends of the resistance wire are respectively connected with an upper lead rod and a lower lead rod, and the upper lead rod is connected with a thermal fuse and an NTC temperature probe; four down-leading rods are provided, wherein two of the four down-leading rods are respectively welded with two ends of the thermal fuse to form a U-shaped loop; the other two are welded with two ends of the NTC temperature probe to form another U-shaped loop, and the two U-shaped loops are arranged in the PE sheath, are mutually connected in parallel and are not mutually contacted. The utility model has the advantages of good consistency, simple manufacturing process, low rejection rate, better performance, cost saving, large temperature detection range, uniform heating and the like.
Description
Technical Field
The utility model belongs to the technical field of the heater, concretely relates to single-end electric heating tube structure of built-in temperature probe and manufacturing method thereof.
Background
Along with the improvement of standard of living day, in the area electric heating equipment of non-collective heating more and more popular, the heating element kind on the electric heating equipment is also more and more, especially electric heating pipe, market demand increases fast, with the utility model discloses there is following shortcoming of the current product ubiquitous on the market of same function:
1. the product of this structure uses the mode production of magnesium oxide stick equipment resistance wire with filling powder, and the equipment is wasted time and energy, especially the long product of pipe length, and the magnesium oxide stick equipment is difficult more and more, and it is big to receive the artificial influence in the equipment process, poor stability, and the disability rate is high, and production efficiency is very low, neither is fit for large-scale production, also makes manufacturing cost too high.
2. The thermal fuse is connected with the lower fuse rod, the upper fuse rod is connected with the power line and the NTC connecting wire, and the NTC temperature probe is connected with the resistance wire in a riveting mode.
3. The soft sleeve is used for fixing the thermal fuse and the NTC temperature probe, so that magnesium oxide powder falls into a gap between the soft sleeve and the stainless steel tube in the powder filling process, and the internal part of the sleeve can be crushed in the diameter reducing process.
4. Because of the adoption riveting is connected between leading stick and the power cord and the NTC connecting wire, the riveting point is inside the heating tube, and power cord and NTC connecting wire are softer, and easy coiling is in the same place in the assembly process, and the easy damage that leads to the disability rate is higher by tensile in the undergauge process.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is to overcome the not enough among the prior art, provide a single-end electric heating tube structure of built-in temperature probe and manufacturing method thereof.
In order to solve the technical problem, the utility model discloses a solution is:
the single-end electric heating tube structure with the built-in temperature probe comprises a stainless steel tube subjected to diameter reduction treatment, wherein a bottom cover is arranged at one end of a tube body, a flange is arranged outside the other end of the tube body, and a sealing material is arranged at a tube opening at the end of the flange; a resistance wire is arranged in the tube body and filled with magnesia powder, two ends of the resistance wire are respectively connected with an upper lead rod and a lower lead rod, the upper lead rod is connected with a power line and one end of an NTC connecting line, and the other ends of the power line and the NTC connecting line extend out of the tube; the PE protective sleeve and the PE protective ring are also included; four down-leading rods are provided, wherein two of the four down-leading rods are respectively welded with two ends of the thermal fuse to form a U-shaped loop; the other two are welded with two ends of the NTC temperature probe to form another U-shaped loop, and the two U-shaped loops are arranged in the PE sheath, are mutually connected in parallel and are not mutually contacted; the PE sheath is a tube sleeve structure with one end open, the PE protection ring comprises a lantern ring, the lantern ring is arranged in the open end of the PE sheath, the four tube sleeves with parallel axes are jointly arranged in the lantern ring, and the middle parts of the four down-leading rods are respectively sleeved in the four tube sleeves.
As an improvement, the thermal fuse and the NTC temperature probe are connected with the down-lead rod through terminal welding.
As an improvement, the outer diameter of the PE sheath is smaller than the inner diameter of the stainless steel pipe after the diameter reduction treatment.
As an improvement, still the cover is equipped with breakable steatite porcelain fixed bead on the part that the stick that draws down worn out the pipe box, and breakable steatite porcelain fixed bead is used for guaranteeing to draw down and has the interval between the stick and draw down between stick and the pipe wall down.
As an improvement, the power line and the connecting line extend out of the outer end of the stainless steel tube and are connected with a quick-connection plug; the structure of the single-head electric heating pipe is also provided with a grounding wire.
As an improvement, the diameter of the PE environment-friendly lantern ring is larger than the inner diameter of the stainless steel pipe after the diameter reduction treatment.
As an improvement, the inner wall of the opening end of the PE sheath is provided with a groove, the PE sheath ring is horn-shaped, the outside of the PE sheath ring is provided with a step structure, and the step structure can be matched with the groove of the opening of the PE sheath; the four pipe sleeves in the PE centering ring are arranged in a cross shape and are different in length, so that the situation that gaps of the four guide rods are too small due to welding spots is avoided.
A method for manufacturing the single-head electric heating tube structure comprises the following steps:
(1) the joint of the thermal fuse and the NTC temperature probe is riveted with an upper terminal, then is respectively welded with four down-leading rods, and then the thermal fuse and the NTC temperature probe are arranged in a PE protective ring and a PE protective sleeve;
(2) one end of the resistance wire is welded with the upper leading bar, the other end of the resistance wire is welded with the lower leading bar, then the assembly is hung on the automatic powder filling machine through a hook on the upper leading bar, a stainless steel pipe with a welded bottom cover is sleeved, and magnesium oxide powder is filled;
(3) and after powder filling, sealing the pipe orifice by using a silicon rubber plug, reducing the diameter of the pipe body by using a pipe reducing machine, welding a power line and an NTC connecting wire on the exposed upward leading rod, and finally riveting and pressing a flange and sealing by using a sealing material.
The principle of the utility model is that:
between hot fuse and NTC temperature probe and the welding formula down draw the stick, all through welded connection between welding formula up draw the stick and power cord and the NTC connecting wire, can effectively strengthen joint strength, ensure that the tie point is not broken at the undergauge in-process. The welding process of the power line, the NTC connecting line and the welding type upward-leading rod is performed after the diameter is reduced, and the welding is performed outside the orifice of the heating pipe, so that the problem that the welding area and the wire are twisted together to damage the wire due to the diameter reduction is completely avoided.
The PE sheath and the PE protection ring which are designed independently can meet the requirements of insulation and production processes, meanwhile, the PE protection ring can effectively prevent magnesium oxide powder from entering a gap between the PE sheath and the stainless steel pipe, and the outer diameter of the PE sheath is smaller than the inner diameter of the stainless steel pipe after the diameter is reduced, so that the thermal fuse and the NTC temperature probe are not extruded in the diameter reducing process, and the rejection rate is effectively reduced.
Compared with the prior art, the beneficial effects of the utility model are that:
the utility model has the advantages of good consistency, simple manufacturing process, low rejection rate, better performance, cost saving, large temperature detection range, uniform heating and the like.
Drawings
Fig. 1 is a schematic structural view of a conventional electric heating tube;
fig. 2 is a schematic structural view of the electric heating tube of the present invention (the connection mode exposed outside the tube is a flexible wire);
fig. 3 is a right side view of the electric heating tube of the present invention (the connection mode exposed outside the tube is a flexible wire);
fig. 4 is a schematic structural view of the electric heating tube of the present invention (the connection mode exposed outside the tube is a quick-connect plug);
fig. 5 is a right side view of the electric heating tube of the present invention (the connection mode exposed outside the tube is a quick-connect plug);
fig. 6 is a schematic structural diagram of the assembly of the PE middle sheath, the PE sheath, the thermal fuse, the NTC temperature probe, and the down-lead rod according to the present invention.
FIG. 7 is a schematic structural view of the PE sheath of the present invention;
fig. 8 is a schematic structural diagram of the PE protection ring of the present invention.
Description of reference numerals:
1-bottom cover, 2-stainless steel tube, 3-thermal fuse, 4-NTC temperature probe, 5-terminal, 6-magnesia powder, 7-resistance wire, 8-silica gel plug, 9-grounding wire, 10-flange, 11-epoxy resin glue, 12-power line, 13-NTC connecting wire, 14-quick-connection plug, 15-PE sheath, 16-PE protective ring, 17-fragile steatite porcelain fixing bead, 18-down rod, 19-up rod, 20-thermal shrinkage sheath, 21-magnesia rod, 22-grounding pin, 23-NTC pin and 24-power line pin.
Detailed Description
The invention will be described in further detail with reference to the following detailed description and accompanying drawings:
as shown in fig. 1, a single-end electric heating tube structure with a built-in temperature probe in the prior art includes a stainless steel tube 2 subjected to diameter reduction treatment, wherein a bottom cover 1 is arranged at one end of the stainless steel tube 2, and a flange 10 is arranged outside the other end. The upward rod 19 and the downward rod 18 are connected through the resistance wire 7 in a riveting mode and are arranged in the stainless steel tube 2 together, the upward rod 19 is connected with the power line 12 and the NTC connecting line 13 in a riveting mode, the power line 12 and the NTC connecting line 13 are led out of the stainless steel tube 2, and the tube opening is sealed through epoxy resin glue 11. The thermal fuse 3 and the NTC temperature probe 4 which are riveted with the terminals are respectively welded with a welding type down-leading rod 18, then a plurality of four-hole magnesium oxide rods 21 are penetrated, the parts of the thermal fuse 3 and the NTC temperature probe 4 exposed outside the magnesium oxide rods are insulated with the appearance by a thermal shrinkage sheath 20, and the rest space in the stainless steel pipe 2 is filled with magnesium oxide powder 6.
Example 1
Referring to fig. 2, a single-end electric heating tube structure with a built-in temperature probe comprises a stainless steel tube 2 subjected to diameter reduction treatment, wherein a bottom cover 1 is arranged at one end of the stainless steel tube 2, and a flange 10 is arranged outside the other end of the stainless steel tube. The upward-leading rod 19 and the downward-leading rod 18 are connected through a resistance wire 7 in a welding mode and are arranged in the stainless steel tube 2 together, the upward-leading rod 19 is connected with one end of a power line 12 and one end of an NTC connecting wire 13 in a welding mode, the other end of the power line 12 and the other end of the NTC connecting wire 13 are connected with a contact pin of a quick-connection plug 14, five contact pins of the quick-connection plug 14 are led out of the stainless steel tube 2, a grounding wire 9 is arranged on a tube opening and is sealed through epoxy resin.
The thermal fuse 3 and the NTC temperature probe 4, which are riveted with the terminals, are welded to a welding type down-lead bar, respectively, and then are loaded into a PE sheath 16 and a PE sheath 15. The number of the down-draw bars 18 is 4. Four down-leading rods are provided, wherein two of the four down-leading rods are respectively welded with two ends of the thermal fuse 3 to form a U-shaped loop; the other two are welded with two ends of the NTC temperature probe 4 to form another U-shaped loop, and the two U-shaped loops are arranged in the PE sheath 15, are mutually connected in parallel and are not mutually contacted; the PE sheath 15 is of a tube sleeve structure, one end of the PE sheath is open, the PE protection ring 16 comprises a sleeve ring, the sleeve ring is arranged in the open end of the PE sheath 15, the four tube sleeves with parallel axes are jointly arranged in the sleeve ring, and the middle parts of the four downward leading rods 18 are respectively sleeved in the four tube sleeves. The down-leading rods 18 outside the sleeve are also sleeved with fragile steatite porcelain fixing beads 17 for ensuring the distance between the down-leading rods 18 and the pipe wall so as to ensure the electrical property of the product. The inner wall of the opening end of the PE sheath 15 is provided with a groove, the ring 16 of the PE sheath is horn-shaped, the outer part of the ring is provided with a step structure, and the step structure can be matched with the groove of the opening end of the PE sheath 15; the four pipe sleeves in the PE protective ring 16 are arranged in a cross shape and have different lengths, so that the situation that gaps among the four guide rods are too small due to welding spots is avoided. The outer diameter of the PE sheath 15 is smaller than the inner diameter of the stainless steel pipe 2 after diameter reduction. The electric heating pipe is also connected with a grounding wire 9.
The utility model provides a NTC temperature probe 4 is thermistor promptly. Conventional commercially available products can be used. With the utility model discloses the automatic powder filling machine that the device cooperation was used can adopt the model that Hangzhou zuo pais industry limited company produced to be 1CTDZ310Q series, 1CTDZ406Q series, 1CTDZ709Q series, 1CTDZ729Q series, 1CTDZ845Q series, 1CTDZ900Q series, 1CTDZ951Q series, 1CTDZ956Q series's product.
The utility model also provides a method of making foretell single-end electric heating tube structure, the step is:
(1) the joints of the thermal fuse 3 and the NTC temperature probe 4 are firstly riveted with an upper terminal 5 and then respectively welded with four down-leading rods 18, and then the thermal fuse 3, the NTC temperature probe 4 and the welded down-leading rods 18 are arranged in a PE protective ring 16 and a PE protective ring 15;
(2) one end of the resistance wire 7 is welded with the upper leading rod 19, the other end is welded with the lower leading rod 18, then the assembly is hung on the automatic powder filling machine through a hook on the upper leading rod 19, the stainless steel pipe 2 welded with the bottom cover 1 is sleeved, and the magnesium oxide powder 6 is filled;
(3) after powder filling, the silicon rubber plug 8 is used for sealing the pipe opening, the pipe reducing machine is used for reducing the diameter of the stainless steel pipe 2, then the power line 12 and the NTC connecting line 13 are welded on the exposed upward leading rod 19, and finally the flange 10 is riveted and sealed by epoxy resin glue 11.
Finally, it should be noted that the above-mentioned embodiments illustrate only specific embodiments of the invention. Obviously, the present invention is not limited to the above embodiments, and many variations are possible. All modifications which can be derived or suggested by a person skilled in the art from the disclosure of the invention should be considered as within the scope of the invention.
Claims (7)
1. A single-end electric heating tube structure with a built-in temperature probe comprises a stainless steel tube subjected to diameter reduction treatment, wherein a bottom cover is arranged at one end of a tube body, a flange is arranged outside the other end of the tube body, and a sealing material is arranged at a tube opening at the end of the flange; a resistance wire is arranged in the tube body and filled with magnesia powder, two ends of the resistance wire are respectively connected with an upper lead rod and a lower lead rod, the upper lead rod is connected with a power line and one end of an NTC connecting line, and the other ends of the power line and the NTC connecting line extend out of the tube; it is characterized by also comprising a PE sheath and a PE protection ring; four down-leading rods are arranged, wherein two of the four down-leading rods are respectively welded with two ends of the thermal fuse to form a U-shaped loop; the other two are welded with two ends of the NTC temperature probe to form another U-shaped loop, and the two U-shaped loops are arranged in the PE sheath, are mutually connected in parallel and are not mutually contacted; the PE sheath is a tube sleeve structure, one end of the PE sheath is open, the PE sheath ring comprises a lantern ring, the lantern ring is arranged in the open end of the PE sheath, the four tube sleeves with parallel axes are jointly arranged in the lantern ring, and the middle parts of the four downward leading rods are respectively sleeved in the four tube sleeves.
2. The structure of a single-ended electric heating tube with a built-in temperature probe as claimed in claim 1, wherein the thermal fuse and the NTC temperature probe are connected with the down-lead rod by welding via terminals.
3. The structure of the single-ended electric heating tube with a built-in temperature probe as claimed in claim 1, wherein the outer diameter of the PE sheath is smaller than the inner diameter of the stainless steel tube after diameter reduction.
4. The structure of the single-head electric heating tube with the built-in temperature probe as claimed in claim 1, wherein the part of the down-leading rod, which penetrates out of the tube sleeve, is further sleeved with a fragile steatite porcelain fixing bead, and the fragile steatite porcelain fixing bead is used for ensuring that a space exists between the down-leading rods and the tube wall.
5. The structure of a single-ended electric heating tube with a built-in temperature probe as claimed in claim 1, wherein the power line and the connecting line extend out of the stainless steel tube and are connected with a quick-connect plug; and the structure of the single-head electric heating pipe is also provided with a grounding wire.
6. The structure of a single-ended electric heating tube with a built-in temperature probe as claimed in claim 1, wherein the diameter of the PE protective ring is larger than the inner diameter of the stainless steel tube after diameter reduction.
7. The structure of a single-head electric heating tube with a built-in temperature probe as claimed in claim 1, wherein the inner wall of the opening end of the PE sheath is provided with a groove, the PE sheath ring is horn-shaped and is externally provided with a step structure, and the step structure can be matched with the groove of the opening of the PE sheath; the four pipe sleeves in the PE centering ring are arranged in a cross shape and are different in length, so that the situation that gaps of the four guide rods are too small due to welding spots is avoided.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022030686.2U CN212649731U (en) | 2020-09-16 | 2020-09-16 | Single-end electric heating tube structure with built-in temperature probe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022030686.2U CN212649731U (en) | 2020-09-16 | 2020-09-16 | Single-end electric heating tube structure with built-in temperature probe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212649731U true CN212649731U (en) | 2021-03-02 |
Family
ID=74762121
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022030686.2U Active CN212649731U (en) | 2020-09-16 | 2020-09-16 | Single-end electric heating tube structure with built-in temperature probe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212649731U (en) |
-
2020
- 2020-09-16 CN CN202022030686.2U patent/CN212649731U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107116278B (en) | A kind of Joining Technology of conducting wire and terminal | |
| CN112020162A (en) | Single-head electric heating tube structure with built-in temperature probe and manufacturing method thereof | |
| CN212649731U (en) | Single-end electric heating tube structure with built-in temperature probe | |
| CN205946207U (en) | High -temperature -resistance single -end heating tube | |
| CN207459303U (en) | A kind of cable connector | |
| CN211125147U (en) | Power cable with high-voltage-resistant sealing structure | |
| CN202979330U (en) | Floor heating cable with crimping joint | |
| CN202167268U (en) | Wire protection sleeve structure of electrical heating coil | |
| CN202034484U (en) | Waterproof joint of electric hot plate | |
| CN205050644U (en) | Suspension type composite insulator gold utensil tip combined type seal structure | |
| CN209593373U (en) | A kind of photovoltaic module structure | |
| CN207819416U (en) | A kind of water-proof cable terminal | |
| CN208970206U (en) | A kind of insulating tube type busbar | |
| CN204967209U (en) | 66-220kV aluminium conductor crosslinked GIS terminal for cable | |
| CN207117992U (en) | A kind of electric heating tube of the high power density with thermal cut-off | |
| CN207994594U (en) | The stress cone of pluggable cable terminal | |
| CN204205770U (en) | A kind of the end of a thread hermetically-sealed construction of motor stator winding | |
| CN205642662U (en) | Miniaturized armoured thermocouple of cold junction | |
| CN218100833U (en) | Insulator | |
| CN206250434U (en) | A kind of related terminal of pre insulated | |
| CN110267377A (en) | A kind of implicit connector of heating cable multiple thread strands | |
| CN206697859U (en) | Cable repairs piecing devices | |
| CN109686475A (en) | A kind of automotive high voltage line beam assembly | |
| CN209811509U (en) | Miniature tubulose heater wire welded structure | |
| CN204482062U (en) | Industrial immersion heater |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |