CN217903455U - Flame-proof and intrinsic safety type resistance heating binding post structure - Google Patents
Flame-proof and intrinsic safety type resistance heating binding post structure Download PDFInfo
- Publication number
- CN217903455U CN217903455U CN202221364298.0U CN202221364298U CN217903455U CN 217903455 U CN217903455 U CN 217903455U CN 202221364298 U CN202221364298 U CN 202221364298U CN 217903455 U CN217903455 U CN 217903455U
- Authority
- CN
- China
- Prior art keywords
- metal
- electric connector
- proof
- seal box
- explosion
- 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
- Connector Housings Or Holding Contact Members (AREA)
Abstract
The utility model discloses a flame proof and intrinsic safety type resistance heating terminal structure, including metal seal box (1), transition metal flexible coupling (2), flame proof type electric connector (3) and cable (4), metal seal box (1) is fixed in the heating chamber lateral wall, and including metal seal box (1) draws forth hole (5) with the metallic conductor of heating chamber lateral wall and covers, metallic conductor (6) pass metallic conductor draw forth hole (5) and get into metal seal box (1) inside be connected with transition metal flexible coupling (2) one end, and metal seal box (1) outer wall is fixed with flame proof type electric connector (3), and flame proof type electric connector (3) one end is passed metal seal box (1) and is connected with the transition metal flexible coupling (2) other end, and the flame proof type electric connector (3) other end is connected with cable (4).
Description
Technical Field
The utility model belongs to the technical field of resistance heating, concretely relates to flame proof and intrinsically safe type resistance heating terminal structure.
Background
Resistance heating is the simplest (and oldest) heating method based on electricity, and can heat metal, molten metal or nonmetal with the efficiency almost reaching 100%, and meanwhile, the working temperature can reach 2000 ℃, so that the method can be applied to high-temperature heating and low-temperature heating. Due to the characteristics of controllability and rapid temperature rise, the resistance heating application field is very wide. The essential requirement for resistance heating involves external terminals connected to the power supply, the heating element being led to the outside of the heating chamber via a metallic conductor, usually bare, which is then connected to the power supply via a cable connection. When being used for having the environment of explosion-proof requirement, the exposed metallic conductor terminal can not satisfy explosion-proof requirement, and the indoor heat of heating simultaneously easily overflows through metallic conductor, leads to the terminal high temperature and the cable scaling loss appears, consequently needs research and development a resistance heating terminal structure, and mainly used has explosion-proof requirement resistance heating equipment to be connected with the power supply.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome above-mentioned prior art not enough, provide a flame proof and intrinsically safe type resistance heating terminal structure.
In order to solve the technical problem, the technical scheme of the utility model is that: the utility model provides a flame proof and intrinsically safe type resistance heating terminal structure, includes metal seal box, transition metal flexible coupling, flame proof type electric connector and cable, the metal seal box is fixed in the heating chamber lateral wall outside, and the metal seal box covers including the metallic conductor extraction hole of heating chamber lateral wall, and metallic conductor passes metallic conductor extraction hole and gets into the inside and transition metal flexible coupling one end of metal seal box and be connected, and the metal seal box outer wall is fixed with flame proof type electric connector, and flame proof type electric connector one end is passed the metal seal box and is connected with the transition metal flexible coupling other end, and the flame proof type electric connector other end and cable junction.
Preferably, the metal sealing box is a cylindrical structure with an open end face, the open end face of the metal sealing box is welded on the side wall of the heating chamber, and the metal conductor leading-out hole is located in the welding range of the side wall of the heating chamber and the metal sealing box.
Preferably, the explosion-proof electric connector comprises an explosion-proof electric connector socket and an explosion-proof electric connector plug, the explosion-proof electric connector socket is fixed on one end face, not opened, of the metal sealing box, one end of the explosion-proof electric connector socket penetrates through the metal sealing box to be connected with the transition metal flexible connector, the explosion-proof electric connector plug is inserted into the explosion-proof electric connector socket on the end face, not opened, of the outer wall of the metal sealing box, and the other end of the explosion-proof electric connector plug is connected with a cable.
Preferably, the side wall of the heating chamber is sequentially provided with a heat preservation layer and a metal shell from inside to outside, and the metal sealing box is welded on the metal shell.
Preferably, the metal conductor leading-out hole sequentially penetrates through the heat insulation layer and the metal shell, an insulation sleeve is sleeved on the inner wall of the metal conductor leading-out hole, the metal conductor penetrates through the insulation sleeve to be in flexible connection with transition metal, and the metal conductor is connected with the heating element in the heating chamber.
Preferably, a sealing heat-insulating ring is sleeved between the metal conductor and the insulating sleeve.
Preferably, the length of the insulating sleeve is greater than that of the metal conductor leading-out hole.
Compared with the prior art, the utility model has the advantages of:
(1) The utility model discloses a flame proof and intrinsic safety type resistance heating terminal structure, set up the metal seal box on the heating chamber lateral wall outside, and install flame proof type electric connector on the metal seal box, and then realize through transition metal flexible coupling that the metallic conductor is connected with flame proof type electric connector, flame proof type electric connector connecting cable, the metallic conductor connects heating element at the heating chamber, finally realize that heating element is connected with the power supply, the metallic conductor draws back and sets up in the metal seal box, can not expose, realize the explosion proof requirement, the metallic seal box can also dispel some heating chamber internal overflow heat simultaneously, the excessive heat makes the terminal temperature too high and the cable burns out the problem when avoiding cable and terminal connection;
(2) The utility model connects the metal conductor and the explosion-proof electric connector through the transition metal flexible connection, which can reduce the heat transfer from the metal conductor to the explosion-proof electric connector and the cable, thereby ensuring the operation temperature of the explosion-proof electric connector and the cable to be under the reliable condition and prolonging the service life;
(3) The utility model discloses the cover is equipped with sealed thermal-insulated circle between metallic conductor and the insulating cover, and sealed thermal-insulated circle is made by sealed thermal insulation material, and it is excessive to enclose the interior heat of reducible heating chamber through sealed thermal-insulated.
Drawings
FIG. 1 is a schematic diagram of a flame-proof and intrinsically safe resistance heating terminal structure used in the utility model.
Description of reference numerals:
1. the device comprises a metal sealing box 2, a transition metal flexible connector 3, an explosion-proof electric connector 4, a cable 5, a metal conductor leading-out hole 6, a metal conductor 7, a heat insulation layer 8, a metal shell 9, an insulation sleeve 10, a heating element 11 and a sealing heat insulation ring;
3-1, a flameproof electric connector socket, 3-2 and a flameproof electric connector plug.
Detailed Description
The following description of the embodiments of the present invention is provided in connection with the following embodiments:
it should be noted that the structure, proportion, size and the like shown in the present specification are only used for matching with the content disclosed in the specification, so as to be known and read by those skilled in the art, and are not used to limit the limit conditions that the present invention can be implemented, and any modification of the structure, change of the proportion relation or adjustment of the size should still fall within the scope that the technical content disclosed in the present invention can cover without affecting the function and the achievable purpose of the present invention.
Example 1
As shown in fig. 1, the utility model discloses a flame proof and intrinsic safety type resistance heating terminal structure, including metal seal box 1, transition metal flexible coupling 2, flame proof type electric connector 3 and cable 4, metal seal box 1 is fixed in the heating chamber lateral wall outside, and metal seal box 1 draws forth hole 5 with the metallic conductor of heating chamber lateral wall and covers including, and metallic conductor 6 passes metallic conductor and draws forth hole 5 and get into metal seal box 1 inside and be connected with 2 one end of transition metal flexible coupling, and 1 outer wall of metal seal box is fixed with flame proof type electric connector 3, and 3 one end of flame proof type electric connector is passed metal seal box 1 and is connected with the 2 other ends of transition metal flexible coupling, and the 3 other ends of flame proof type electric connector are connected with cable 4.
Example 2
As shown in fig. 1, the metal sealing case 1 is preferably a cylindrical structure with an open end, the open end of the metal sealing case 1 is welded to the side wall of the heating chamber, and the metal conductor lead-out hole 5 is located in the welding range of the side wall of the heating chamber and the metal sealing case 1.
The metal sealing box 1 can also be square as long as one side of the metal sealing box 1 can cover the metal conductor leading-out hole 5.
Example 3
As shown in fig. 1, preferably, the flameproof electrical connector 3 includes a flameproof electrical connector socket 3-1 and a flameproof electrical connector plug 3-2, the flameproof electrical connector socket 3-1 is fixed on an end surface of the metal seal box 1 that is not opened, one end of the flameproof electrical connector socket 3-1 penetrates through the metal seal box 1 to be connected with the transition metal flexible connector 2, the flameproof electrical connector plug 3-2 is inserted into the flameproof electrical connector socket 3-1 that is located on the end surface of the outer wall of the metal seal box 1 that is not opened, and the other end of the flameproof electrical connector plug 3-2 is connected with the cable 4.
An internal thread can be further arranged on one side of the metal conductor 6, an external thread is arranged on one side of the explosion-proof electric connector 3, and the metal conductor 6 is connected with the explosion-proof electric connector 3 through the threads.
The flame-proof type electric connector 3 can be a conventional electric connector and can be fixed on the metal sealing box 1, and the transition metal flexible connection 2 is connected with the cable 4.
Example 4
As shown in fig. 1, preferably, the side wall of the heating chamber is provided with an insulating layer 7 and a metal outer shell 8 in sequence from inside to outside, and the metal sealing box 1 is welded on the metal outer shell 8.
Still can fix metal seal box 1 on metal casing 8 through the bolt, set up the sealing washer in metal seal box 1 and metal casing 8 junction, guarantee metal seal box 1's sealed effect.
As shown in fig. 1, preferably, the metal conductor lead-out hole 5 sequentially passes through the insulating layer 7 and the metal housing 8, an insulating sleeve 9 is sleeved on the inner wall of the metal conductor lead-out hole 5, the metal conductor 6 passes through the insulating sleeve 9 to be connected with the transition metal flexible connector 2, and the metal conductor 6 is connected with the heating element 10 in the heating chamber.
Example 5
As shown in fig. 1, a sealing and heat insulating ring 11 is preferably fitted between the metal conductor 6 and the insulating sheath 9.
The sealing and heat insulating ring 11 is made of sealing and heat insulating materials, and can separate the heating chamber from the metal sealing box 1 to avoid heat overflow.
As shown in fig. 1, the length of the insulating sleeve 9 is preferably greater than the length of the metallic conductor lead-out hole 5, so as to avoid the edge of the metallic conductor 6 from contacting the side wall of the heating chamber.
The utility model discloses a theory of operation as follows:
as shown in fig. 1, the utility model discloses a flame proof and intrinsic safety type resistance heating terminal structure, set up metal seal box 1 in the heating chamber lateral wall outside, install flame proof type electric connector 3 on metal seal box 1, rethread transition metal flexible coupling 2 realizes that metallic conductor 6 is connected with flame proof type electric connector 3, and set up sealed heat insulating ring 11 between insulating cover 9 and metallic conductor 6, metallic conductor 6 passes through metal seal box 1 with cable 4, transition metal flexible coupling 2 and flame proof type electric connector 3 realize the intercommunication, keep apart with operational environment through metal seal box 1, realize explosion-proof requirement, metallic seal box 1 also can dispel the interior excessive heat of part heating chamber simultaneously, it is excessive to reduce the interior heat of heating chamber through sealed heat insulating ring 11, the heat of the reducible metallic conductor 6 of transition metal flexible coupling 2 to flame proof type electric connector 3 and cable 4 transmission, thereby guarantee that flame proof type electric connector 3 and cable 4 operating temperature move under reliable condition.
The utility model provides a metal conductor exposed problem, can not satisfy the use operating mode that has explosion-proof requirement, solved the excessive and too high problem of terminal temperature of heat in the heating chamber simultaneously through increasing sealed thermal-insulated circle 11 and metal seal box 1.
The utility model discloses a flame proof and intrinsic safety type resistance heating terminal structure, set up the metal seal box on the heating chamber lateral wall outside, and install flame proof type electric connector on the metal seal box, the metallic conductor is realized to rethread transition metal flexible coupling and is connected with flame proof type electric connector, flame proof type electric connector connecting cable, metallic conductor connects heating element at the heating chamber, finally realize that heating element is connected with the power supply, set up in the metal seal box after the metallic conductor draws forth, can not expose, explosion-proof requirement has been realized, the internal excessive heat of partial heating chamber also can be scattered to the metal seal box simultaneously, excessive heat makes terminal temperature too high and the cable scaling loss problem appears when avoiding cable and terminal to be connected.
The utility model discloses a transition metal flexible coupling is connected metallic conductor and flame-proof type electric connector, and reducible metallic conductor is to flame-proof type electric connector and cable transmission heat to guarantee that flame-proof type electric connector and cable operating temperature move under reliable condition, improve life.
The utility model discloses the cover is equipped with sealed thermal-insulated circle between metallic conductor and the insulating cover, and sealed thermal-insulated circle is made by sealed thermal insulation material, and it is excessive to enclose the interior heat of reducible heating chamber through sealed thermal-insulated.
Although the preferred embodiments of the present invention have been described in detail, the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art.
Many other changes and modifications can be made without departing from the spirit and scope of the invention. It is to be understood that the invention is not limited to the specific embodiments, but is intended to be limited only by the scope of the appended claims.
Claims (7)
1. The utility model provides a flame proof and intrinsically safe type resistance heating terminal structure which characterized in that: including metal seal box (1), transition metal flexible coupling (2), flame-proof type electric connector (3) and cable (4), metal seal box (1) is fixed in the heating chamber lateral wall outside, and metal seal box (1) covers including the metallic conductor extraction hole (5) of heating chamber lateral wall, and metallic conductor (6) pass metallic conductor extraction hole (5) and get into inside and transition metal flexible coupling (2) one end of metal seal box (1) and be connected, and metal seal box (1) outer wall is fixed with flame-proof type electric connector (3), and flame-proof type electric connector (3) one end is passed metal seal box (1) and is connected with transition metal flexible coupling (2) other end, and the flame-proof type electric connector (3) other end is connected with cable (4).
2. The flameproof and intrinsically safe resistance heating binding post structure of claim 1, which is characterized in that: the metal sealing box (1) is of a cylindrical structure with an open end face, one open end face of the metal sealing box (1) is welded on the side wall of the heating chamber, and the metal conductor leading-out hole (5) is located in the welding range of the side wall of the heating chamber and the metal sealing box (1).
3. The flameproof and intrinsically safe resistance heating binding post structure of claim 2, which is characterized in that: the explosion-proof electric connector (3) comprises an explosion-proof electric connector socket (3-1) and an explosion-proof electric connector plug (3-2), the explosion-proof electric connector socket (3-1) is fixed on one end face, not opened, of the metal sealing box (1), one end of the explosion-proof electric connector socket (3-1) penetrates through the metal sealing box (1) to be connected with the transition metal flexible connection (2), the explosion-proof electric connector plug (3-2) is inserted into the explosion-proof electric connector socket (3-1) on one end face, not opened, of the outer wall of the metal sealing box (1), and the other end of the explosion-proof electric connector plug (3-2) is connected with the cable (4).
4. The flameproof and intrinsically safe resistance heating binding post structure of claim 1, which is characterized in that: the side wall of the heating chamber is sequentially provided with a heat insulation layer (7) and a metal shell (8) from inside to outside, and the metal sealing box (1) is welded on the metal shell (8).
5. The flameproof and intrinsically safe resistance heating terminal structure of claim 4, which is characterized in that: the metal conductor leading-out hole (5) sequentially penetrates through the heat preservation layer (7) and the metal shell (8), an insulating sleeve (9) is sleeved on the inner wall of the metal conductor leading-out hole (5), the metal conductor (6) penetrates through the insulating sleeve (9) to be connected with the transition metal flexible connector (2), and the metal conductor (6) is connected with the heating element (10) in the heating chamber.
6. The flameproof and intrinsically safe resistance heating terminal structure of claim 5, which is characterized in that: and a sealing heat-insulating ring (11) is sleeved between the metal conductor (6) and the insulating sleeve (9).
7. The flameproof and intrinsically safe resistance heating binding post structure of claim 5, which is characterized in that: the length of the insulating sleeve (9) is greater than that of the metal conductor leading-out hole (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221364298.0U CN217903455U (en) | 2022-06-02 | 2022-06-02 | Flame-proof and intrinsic safety type resistance heating binding post structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221364298.0U CN217903455U (en) | 2022-06-02 | 2022-06-02 | Flame-proof and intrinsic safety type resistance heating binding post structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217903455U true CN217903455U (en) | 2022-11-25 |
Family
ID=84112825
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221364298.0U Active CN217903455U (en) | 2022-06-02 | 2022-06-02 | Flame-proof and intrinsic safety type resistance heating binding post structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217903455U (en) |
-
2022
- 2022-06-02 CN CN202221364298.0U patent/CN217903455U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201927712U (en) | Connector for conducting wires | |
| CN217903455U (en) | Flame-proof and intrinsic safety type resistance heating binding post structure | |
| CN209249190U (en) | A kind of heat dissipation power cable | |
| CN104241910B (en) | Wiring terminal for carbon fiber cable | |
| US3343122A (en) | Junction device for electric cable of the coaxial type, more particularly for high-tension coaxial cable | |
| CN104812110A (en) | Moistureproof insulating electric heater and manufacturing method thereof | |
| CN113539643A (en) | Transformer bushing and manufacturing method thereof | |
| CN109546397B (en) | Double-layer photovoltaic connector | |
| CN200980171Y (en) | Compound electric heating pipes in series | |
| CN2322291Y (en) | Labyrinth shape assembled type closed sleeve pipe | |
| CN209910386U (en) | High-temperature electrical heating furnace | |
| CN208970206U (en) | A kind of insulating tube type busbar | |
| CN220138764U (en) | High-resistant Wen Jiexian structure | |
| CN212363477U (en) | NTC temperature sensor packaging structure | |
| CN215573420U (en) | Thermocouple with protective sleeve | |
| CN218352093U (en) | Explosion-proof wiring integrated structure of electric heater and electric heater | |
| CN113783041B (en) | Miniaturized power shielding connector | |
| CN218919425U (en) | Sampling control power line bundle | |
| CN203590483U (en) | Connecting terminal mechanism of electric blanket | |
| CN220156675U (en) | Simple high-temperature-resistant sealing binding post | |
| CN220190410U (en) | Fireproof electric wire | |
| CN206976664U (en) | A kind of resistant to elevated temperatures cable connector | |
| CN213305147U (en) | Waterproof junction box for motor | |
| CN208335773U (en) | A kind of novel energy-conserving cable | |
| CN209882311U (en) | Heat dissipation type wiring power supply box |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |