CN212619380U - Electric heater for heating gas - Google Patents
Electric heater for heating gas Download PDFInfo
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- CN212619380U CN212619380U CN202022100254.4U CN202022100254U CN212619380U CN 212619380 U CN212619380 U CN 212619380U CN 202022100254 U CN202022100254 U CN 202022100254U CN 212619380 U CN212619380 U CN 212619380U
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Abstract
The utility model is used for electric heater of gas heating, electric heating pipe's heating section extends along the heating air flue level in the shell body, the cold zone section that is located between tube sheet and the preceding flange bends along L shape and upwards extends, every electric heating pipe's wiring end stretches out to the shell body top along vertical direction side, and connect the power lead through the junction box, heating air flue and air inlet, the horizontal direction setting is all followed to the gas outlet, can be through preceding flange, back flange direct mount is on the tuber pipe, need not set up air inlet and gas outlet in addition, moreover, the steam generator is simple in structure, high operation, high heating efficiency, and is stable and reliable.
Description
Technical Field
The utility model relates to an electric heater for gas heating.
Background
The traditional electric heater for heating gas is generally provided with a plurality of electric heating pipes at one end of an outer shell of the electric heater, the electric heating pipes extend along the axial direction of the shell, the outer ends of the plurality of electric heating pipes are connected with a power supply lead through a junction box, and the junction box is fixedly arranged at the end part of the outer shell; in addition, an air inlet and an air outlet are respectively arranged on the wall part of the outer shell of the electric heater, which is close to the front end and the rear end, and are arranged along the direction which is mutually vertical to the axial direction of the outer shell of the electric heater, namely, the air inlet direction and the air outlet direction are opposite to each other, and the air circulation resistance is large; the electric heating pipes are arranged in the direction which is perpendicular to the axial direction of the outer shell of the electric heater, and the outer shell of the electric heater cannot be directly connected with the gas conveying channel in an installing mode, so that the structure is complex, and the operation is inconvenient.
Disclosure of Invention
The utility model aims to solve the technical problem that a can direct mount on the tuber pipe is provided, need not set up air inlet and gas outlet in addition, simple structure, convenient operation
An electric heater for heating gas.
The utility model is used for electric heater of gas heating, its characterized in that: the heating device comprises an outer shell, wherein a front flange and a rear flange are respectively arranged at two ends of the outer shell, an air inlet is formed in the front flange, an air outlet is formed in the rear flange, a heating air passage in the horizontal direction is formed in the outer shell, and the air inlet is communicated to the air outlet through the heating air passage; a plurality of electric heating pipes are arranged in the shell through pipe plates, the heating section of each electric heating pipe is positioned in the heating air passage, and the cold section of each electric heating pipe, which is positioned between the pipe plate and the front flange, is L-shaped, so that the wiring end of each electric heating pipe extends to the upper part of the shell along the vertical direction and is connected with a power supply lead through a wiring box;
a plurality of axial through holes are filled in the outer shell through fireproof heat-insulating materials to form a plurality of parallel heating air passages, the inner diameter of each through hole is larger than the outer diameter of each electric heating pipe, and each electric heating pipe is respectively installed in each axial through hole in a matching manner;
the plurality of electric heating pipes are uniformly distributed along the circumferential direction, and the plurality of axial through holes are also uniformly distributed along the corresponding circumferential direction;
the middle part of the front flange is provided with a circular through hole to form an air inlet, and the rear flange is provided with air outlets with the shapes and the number consistent with the cross section of the heating air passage;
a plurality of supporting cushion blocks are respectively arranged below each electric heating pipe;
the cross section of each supporting cushion block is respectively in a fan shape, the inner arc surface of each supporting cushion block is matched with the outer circumference surface of the electric heating pipe, and the outer arc surface of each supporting cushion block is matched with the inner surface of the heating air channel;
the wiring ends of the electric heating pipes are uniformly distributed along the elliptical direction;
each electric heating tube is a single-end leading-out heating rod, a single-end thread heating tube, a single-end electric heating rod, a single-end heating rod or a single-end electric heating tube;
and an auxiliary insulating layer is arranged on the part of the outer shell between the front flange and the tube plate.
The utility model is used for electric heater of gas heating, electric heating pipe's heating section extends along the heating air flue level in the shell body, the cold zone section that is located between tube sheet and the preceding flange bends along L shape and upwards extends, every electric heating pipe's wiring end stretches out to the shell body top along vertical direction side, and connect the power lead through the junction box, heating air flue and air inlet, the gas outlet all sets up along the horizontal direction, can be through preceding flange, back flange direct mount is on the tuber pipe, need not set up air inlet and gas outlet in addition, moreover, the steam generator is simple in structure, and convenient for operation
The heating efficiency is high, and the heating device is stable and reliable.
Drawings
Fig. 1 is a schematic plan view of an electric heater for heating gas according to an embodiment of the present invention;
FIG. 2 is a left side view of FIG. 1;
FIG. 3 is a right side view of FIG. 1;
FIG. 4 is a cross-sectional view A-A of FIG. 1;
FIG. 5 is a sectional view B-B of FIG. 2;
fig. 6 is a schematic view of a plane structure in a connection box of an electric heater for gas heating according to an embodiment of the present invention.
Detailed Description
As shown in the figure, an electric heater for heating gas is firstly provided with an outer shell 7, the outer shell 7 can be cylindrical or square tubular, a circular or square front flange 1 and a square rear flange 12 are correspondingly arranged at the front end and the rear end of the outer shell, respectively, an air inlet 16 is directly arranged on the front flange 1, an air outlet 13 is directly arranged on the rear flange, a heating air channel 9 is arranged in the outer shell 7 along the horizontal direction, and the air inlet 16 is communicated to the air outlet 13 through the heating air channel 9; a plurality of electric heating pipes 2 are arranged in an outer shell 7 through a pipe plate 6, and a heating section 8 of each electric heating pipe 2 is positioned in a heating air passage 9, namely the heating section extends along the horizontal direction; the cold section 3 of each electric heating tube 2, which is positioned between the tube plate 6 and the front flange 1, is L-shaped, so that the wiring end of each electric heating tube 2 extends to the upper part of the outer shell 7 along the vertical direction and is connected with a power supply lead through a wiring box 4; when the electric heater is installed, the electric heater can be directly installed and connected on the air pipe through the front flange 1 and the rear flange 12, air in the air pipe enters the outer shell from the air inlet 16, and the air is not heated at the moment, so that the cold section of the electric heating pipe cannot be influenced, and on the contrary, the heat emitted by the heating section of the electric heating pipe and transferred to the cold section can pre-heat the air; after the gas enters from the heating air passage, the gas circulates to the gas outlet along the heating air passage, and is heated and warmed by the electric heating pipe, so that the gas heating device is simple in structure, convenient to operate, small in occupied space, small in size and light in weight.
Be provided with a plurality of axial through holes through 14 packing of fire prevention insulation material in the inside of shell 7, constitute a plurality of heating air flue 9 that are parallel to each other, every through-hole internal diameter is greater than the electric heating pipe external diameter, every electric heating pipe cooperates respectively and installs inside every axial through hole, heating air flue and air inlet, the gas outlet all sets up along the horizontal direction, need not set up air inlet and gas outlet in addition, can be through preceding flange, back flange direct mount is on the tuber pipe, can not produce the resistance to the circulating gas, gaseous circulation pressure is stable, heating efficiency is high, and is stable and reliable.
The plurality of electric heating pipes 2 are uniformly distributed along the circumferential direction, the plurality of axial through holes are also uniformly distributed along the corresponding circumferential direction, the gas heating is uniform in temperature rise, and the heating effect is good.
The air inlet 16 can be formed by directly arranging a circular through hole in the middle of the front flange 1, and the air outlet 13 can be formed by arranging a plurality of circular through holes with the shapes and the number consistent with the cross section of the heating air passage on the rear flange, so that the production and manufacturing process is simple.
A temperature measuring element 11 is arranged at the position of the outer shell close to the air outlet, and the temperature measuring element can adopt a platinum resistor, so that the heating temperature is convenient to control; a plurality of supporting cushion blocks 10 can be respectively arranged below the heating section 8 of each electric heating pipe 2, so that the stability of the installation of the electric heating pipes is ensured.
The cross section of each supporting cushion block is respectively arranged in a fan shape, the inner arc surface of each supporting cushion block is matched with the outer circumference surface of the electric heating pipe, the outer arc surface of each supporting cushion block is matched with the inner surface of the heating air channel, and the supporting effect is good.
The wiring ends of the electric heating pipes 2 are uniformly distributed in the wiring box along the elliptical direction, and the occupied space is small.
Each electric heating pipe can adopt a single-end leading-out wire type heating rod, a single-end thread heating pipe, a single-end electric heating rod, a single-end heating rod or a single-end electric heating pipe, and can be adaptively selected according to the field use requirement.
An auxiliary insulating layer 15 can be arranged in the preheating area between the front flange 1 and the tube plate 6 in the inner cavity of the outer shell 7, so that the heat utilization rate and the heating effect are further improved.
The utility model is used for electric heater of gas heating, electric heating pipe's heating section extends along the heating air flue level in the shell body, the cold zone section that is located between tube sheet and the preceding flange bends along L shape and upwards extends, every electric heating pipe's wiring end stretches out to the shell body top along vertical direction side, and connect the power lead through the junction box, heating air flue and air inlet, the gas outlet all sets up along the horizontal direction, can be through preceding flange, back flange direct mount is on the tuber pipe, need not set up air inlet and gas outlet in addition, moreover, the steam generator is simple in structure, and convenient for operation
The heating efficiency is high, and the heating device is stable and reliable. The supporting cushion block is made of refractory bricks.
Claims (9)
1. An electric heater for gas heating, characterized by: the heating device comprises an outer shell, wherein a front flange and a rear flange are respectively arranged at two ends of the outer shell, an air inlet is formed in the front flange, an air outlet is formed in the rear flange, a heating air passage in the horizontal direction is formed in the outer shell, and the air inlet is communicated to the air outlet through the heating air passage; many electric heating pipes are installed through the tube sheet to the shell body inside, and every electric heating pipe's heating section is located the heating air flue, and every electric heating pipe is located the cold district section between tube sheet and the preceding flange and is L shape for every electric heating pipe's wiring end stretches out to the shell body top along vertical direction orientation, and connects the power lead through the junction box.
2. An electric heater for gas heating according to claim 1, wherein: the shell body is internally provided with a plurality of axial through holes through the fireproof heat-insulating material in a filling manner, a plurality of mutually parallel heating air passages are formed, the inner diameter of each through hole is larger than the outer diameter of each electric heating pipe, and each electric heating pipe is respectively installed inside each axial through hole in a matching manner.
3. An electric heater for gas heating according to claim 2, wherein: a plurality of electric heating pipes are evenly distributed along the circumferential direction, and a plurality of axial through holes are also evenly distributed along the corresponding circumferential direction.
4. An electric heater for gas heating according to claim 3, wherein: the middle part of the front flange is provided with a circular through hole to form an air inlet, and the rear flange is provided with air outlets with the shapes and the number consistent with the cross section of the heating air passage.
5. An electric heater for gas heating according to claim 1, wherein: a plurality of supporting cushion blocks are respectively arranged below each electric heating pipe.
6. An electric heater for gas heating according to claim 5, wherein: the cross section of each supporting cushion block is respectively in a fan shape, the inner arc surface of each supporting cushion block is matched with the outer circumference surface of the electric heating pipe, and the outer arc surface of each supporting cushion block is matched with the inner surface of the heating air channel.
7. An electric heater for gas heating according to claim 1, wherein: the wiring ends of the electric heating pipes are uniformly distributed along the elliptical direction.
8. An electric heater for gas heating according to claim 1, wherein: each electric heating tube is a single-end leading-out wire type heating rod, a single-end thread heating tube, a single-end electric heating rod, a single-end heating rod or a single-end electric heating tube.
9. An electric heater for gas heating according to claim 2, wherein: and an auxiliary insulating layer is arranged on the part of the outer shell between the front flange and the tube plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022100254.4U CN212619380U (en) | 2020-09-22 | 2020-09-22 | Electric heater for heating gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022100254.4U CN212619380U (en) | 2020-09-22 | 2020-09-22 | Electric heater for heating gas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212619380U true CN212619380U (en) | 2021-02-26 |
Family
ID=74704076
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022100254.4U Active CN212619380U (en) | 2020-09-22 | 2020-09-22 | Electric heater for heating gas |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212619380U (en) |
-
2020
- 2020-09-22 CN CN202022100254.4U patent/CN212619380U/en active Active
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