CN212205086U - Electric heating tube plate structure - Google Patents
Electric heating tube plate structure Download PDFInfo
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- CN212205086U CN212205086U CN201922466228.0U CN201922466228U CN212205086U CN 212205086 U CN212205086 U CN 212205086U CN 201922466228 U CN201922466228 U CN 201922466228U CN 212205086 U CN212205086 U CN 212205086U
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- heating tube
- electric heating
- tube
- limiting boss
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Abstract
The utility model discloses an electric heating tube plate structure, terminal surface and explosion-proof junction box sealing connection before the base plate, the outer periphery of the spacing boss of back end passes through clearance fit with explosion-proof electric heater pipe casing front end tee bend inner chamber, base plate rear end conical surface constitutes V-arrangement welding groove with the three-way preceding terminal surface cooperation of explosion-proof electric heater pipe casing front end, welded connection convenient operation, be convenient for electric heating tube, a weighing sensor and a temperature sensor, pull rod location installation, moreover, the steam generator is simple in structure, and the operation is convenient, high strength, can adapt to high-pressure deionized water medium supercritical electric heater, the harsh operation requirement of environment such as high-pressure water and electricity heater, the erection joint is simple and convenient, connect reliably.
Description
Technical Field
The utility model relates to an electric heating tube plate structure.
Background
In the conventional structure of the explosion-proof electric heater, after the tube plate electric heating tube is generally limited and fixedly supported, the tube plate is matched and fixedly connected with the shell of the electric heater, and a temperature sensor, a pull rod and the like also need to be positioned and installed through the tube plate, so that the strength performance of the tube plate and the connection reliability of the tube plate and the shell directly determine the operation stability of the electric heater; in the prior art, electric heaters used for high-pressure deionized water medium supercritical electric heaters, high-pressure water supply electric heaters and the like in severe use environments form an integral heating cavity by combining a plurality of pipeline cavities through tee joints, elbow joints and the like, a tube plate is required to be matched and fixedly connected with the tee joints at the end parts of the pipeline cavities, the tube plate structure in the traditional technology cannot adapt to the severe use requirements of the high-pressure deionized water medium supercritical electric heaters, the high-pressure water supply electric heaters and the like in severe use environments, the installation and connection operation is difficult, and the connection is unreliable.
Disclosure of Invention
The utility model aims to solve the technical problem that an electric heating pipe, temperature sensor, pull rod location installation of can being convenient for is provided, simple structure, convenient operation, intensity is high, be convenient for with pipeline tee bend welded connection's electric heating pipe plate structure.
The utility model discloses an electric heating tube plate structure, its characterized in that: the anti-explosion electric heater tube comprises a disc-shaped tube plate formed by a forging process, wherein the front section of the tube plate is a base plate, the rear section of the tube plate is an extension section which protrudes outwards from the middle part of the base plate to form a limiting boss which can be matched with an inner cavity of a tee joint at the front end of an anti-explosion electric heater tube shell, the cross section of the tube plate is positioned in the projection area of the limiting boss and is provided with a plurality of axial through holes which can limit, fix and support an electric heating tube to form tube holes, a plurality of counter bores are uniformly distributed in the interval space between the outermost circles of tube holes along the circumferential direction to form pull rod fixing; the outer circumferential surface of the limiting boss is in clearance fit with the inner diameter of the tee joint, the outer circumferential surface of the limiting boss is in transitional connection with the rear end surface of the base plate through a conical surface, and the conical surface is matched with the front end surface of the tee joint at the front end of the shell of the explosion-proof electric heater tube to form a V-shaped welding groove;
the conical degree is 15 degrees, so that the groove angle of the V-shaped welding groove is 30 degrees;
the bottom end of the conical surface is in arc transition connection with the outer circumferential surface of the limiting boss, and the conical surface is matched with the front end surface of a tee joint at the front end of the shell of the explosion-proof electric heater tube to form a U-shaped welding groove;
the radius of the circular arc is 1/2 of the axial length of the limiting boss;
the rear end face of the limiting boss is in transition connection with the outer circumferential face through an arc, and the front end face of the base plate is perpendicular to the axis to form a sealing face capable of being in sealing connection with the explosion-proof junction box;
the limiting boss is uniformly provided with 6 pull rod fixing holes along the circumferential direction, and the inner diameter of each pull rod fixing hole is in interference fit with the diameter of a pull rod;
the tube plate material is 16 MnIII.
The utility model discloses an electric heating tube plate structure, terminal surface and explosion-proof junction box sealing connection before the base plate, the outer periphery of the spacing boss of back end passes through clearance fit with explosion-proof electric heater pipe casing front end tee bend inner chamber, base plate rear end conical surface constitutes V-arrangement welding groove with the three-way preceding terminal surface cooperation of explosion-proof electric heater pipe casing front end, welded connection convenient operation, be convenient for electric heating tube, a weighing sensor and a temperature sensor, pull rod location installation, moreover, the steam generator is simple in structure, and the operation is convenient, high strength, can adapt to high-pressure deionized water medium supercritical electric heater, the harsh operation requirement of environment such as high-pressure water and electricity heater, the erection joint is simple and convenient, connect reliably.
Drawings
Fig. 1 is a schematic plan view of an electric heating tube plate structure according to an embodiment of the present invention;
FIG. 2 is a left side view of FIG. 1;
FIG. 3 is a schematic sectional view of the portion A of FIG. 1;
FIG. 4 is a schematic view of the cross-sectional structure of the portion B of FIG. 1;
FIG. 5 is a schematic cross-sectional view of the portion C of FIG. 1;
fig. 6 is a schematic structural view of a three-way section at the front end of an explosion-proof electric heater tube shell in a matched connection with an electric heating tube plate structure according to an embodiment of the present invention;
fig. 7 is a schematic sectional view of a U-shaped groove welding structure formed by the cooperation of an electric heating tube plate structure and an explosion-proof electric heater tube shell front end tee.
Detailed Description
As shown in the figure, the main structure of the electric heating tube plate is a disc-shaped tube plate formed by forging 16MnIII material, and the electric heating tube plate is high in strength and good in comprehensive performances such as corrosion resistance and wear resistance.
The front section of the tube plate is a base plate 1, the rear section of the tube plate is an extension section which protrudes outwards from the middle part of the base plate 1 to form a limiting boss 2 which can be matched with an inner cavity of a tee joint at the front end of an explosion-proof electric heater tube shell, the cross section of the tube plate is positioned in a projection area of the limiting boss 2, a plurality of axial through holes which can limit, fixedly support and support an electric heating tube are arranged in the projection area to form a tube hole 4, and the electric heating tube of the electric heater is respectively installed in a; a plurality of counter bores are uniformly distributed in the interval space between the outermost ring of pipe holes along the circumferential direction to form a pull rod fixing hole 5, the diameter of the pull rod fixing hole 5 is phi 6.5mm, the depth of the counter bore is 12, the diameter of a pull rod which is installed in a matched mode is phi 6, and the pull rod is fixedly connected through welding after being inserted into the connecting rod fixing hole.
Still set up a pair of temperature sensor mounting hole 3 along diametric symmetry in the circumferencial direction, be convenient for the temperature sensor like location installation such as bimetal thermocouple.
The outer circumferential surface 7 of the limiting boss 2 is in clearance fit with the inner hole 71 of the tee joint, so that the positioning and installation are convenient; the external diameter of spacing boss is 199mm in this embodiment, and the corresponding supporting explosion-proof electric heater pipe casing front end tee bend internal diameter is 200 mm.
The outer circumferential surface 7 of the limiting boss is in transitional connection with the rear end face of the base plate 1 through the conical surface 6, the conical surface 6 is matched with the front end face 61 of the tee joint at the front end of the shell of the explosion-proof electric heater tube to form a V-shaped welding groove, and the welding connection operation is convenient.
Furthermore, the taper of the conical surface 6 is 15 degrees, and the bevel angle of a V-shaped welding bevel formed by matching the conical surface 6 with the front end surface 61 of the tee joint at the front end of the shell of the explosion-proof electric heater tube is 30 degrees;
furthermore, the bottom end of the conical surface 6 is in arc transition connection with the outer circumferential surface 7 of the limiting boss 2, and the conical surface 6 is matched with the front end surface 61 of the tee joint at the front end of the explosion-proof electric heater tube shell to form a U-shaped welding groove, so that the welding connection strength is further improved.
The radius of circular arc is 1/2 of spacing boss axial length, and spacing boss axial length is 10mm in this embodiment, and the circular arc radius is 5mm, ensures that welded connection is reliable.
The rear end face and the outer circumferential face of the limiting boss are also in transition connection through arcs, but the front end face of the base plate is strictly vertical to the axis, the verticality tolerance is 0.15mm, and a sealing face capable of being in sealing connection with the explosion-proof junction box is formed; the pipe hole is also strictly vertical to the sealing surface, and the verticality tolerance is 0.04 mm.
In the embodiment, 6 pull rod fixing holes 5 are uniformly formed in the limiting boss along the circumferential direction, 6 pull rods can be fixedly installed at the same time, and 2-4 pull rods can be installed in 2-4 fixing holes at intervals according to actual use requirements, so that stable support is ensured.
The utility model discloses an electric heating tube plate structure, terminal surface and explosion-proof junction box sealing connection before the base plate, the outer periphery of the spacing boss of back end passes through clearance fit with explosion-proof electric heater pipe casing front end tee bend inner chamber, base plate rear end conical surface constitutes V-arrangement welding groove with the three-way preceding terminal surface cooperation of explosion-proof electric heater pipe casing front end, welded connection convenient operation, be convenient for electric heating tube, a weighing sensor and a temperature sensor, pull rod location installation, moreover, the steam generator is simple in structure, and the operation is convenient, high strength, can adapt to high-pressure deionized water medium supercritical electric heater, the harsh operation requirement of environment such as high-pressure water and electricity heater, the erection joint is simple and convenient, connect reliably.
Claims (7)
1. An electric heating tube plate structure which is characterized in that: the anti-explosion electric heater tube comprises a disc-shaped tube plate formed by a forging process, wherein the front section of the tube plate is a base plate, the rear section of the tube plate is an extension section which protrudes outwards from the middle part of the base plate to form a limiting boss which can be matched with an inner cavity of a tee joint at the front end of an anti-explosion electric heater tube shell, the cross section of the tube plate is positioned in the projection area of the limiting boss and is provided with a plurality of axial through holes which can limit, fix and support an electric heating tube to form tube holes, a plurality of counter bores are uniformly distributed in the interval space between the outermost circles of tube holes along the circumferential direction to form pull rod fixing; the outer circumferential surface of the limiting boss is in clearance fit with the inner diameter of the tee joint, the outer circumferential surface of the limiting boss is in transitional connection with the rear end face of the base plate through a conical surface, and the conical surface is matched with the front end face of the tee joint at the front end of the shell of the explosion-proof electric heater tube to form a V-shaped welding groove.
2. The electrical heating tube sheet structure of claim 1, wherein: the conical taper is 15 degrees, so that the bevel angle of the V-shaped welding bevel is 30 degrees.
3. Electric heating tube plate structure according to claim 1 or 2, characterized in that: the bottom end of the conical surface is in arc transitional connection with the outer circumferential surface of the limiting boss, and the conical surface is matched with the front end face of the tee joint at the front end of the shell of the explosion-proof electric heater tube to form a U-shaped welding groove.
4. The electrical heating tube sheet structure of claim 3, wherein: the radius of the circular arc is 1/2 of the axial length of the limiting boss.
5. The electric heating tube sheet structure of claim 4, wherein: the rear end face of the limiting boss is in transition connection with the outer circumferential face through an arc, and the front end face of the base plate is perpendicular to the axis to form a sealing face capable of being in sealing connection with the explosion-proof junction box.
6. The electric heating tube sheet structure of claim 5, wherein: the limiting boss is evenly provided with 6 pull rod fixing holes along the circumferential direction, and the inner diameter of each pull rod fixing hole is in interference fit with the diameter of each pull rod.
7. The electric heating tube sheet structure of claim 6, wherein: the tube plate material is 16 MnIII.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922466228.0U CN212205086U (en) | 2019-12-31 | 2019-12-31 | Electric heating tube plate structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922466228.0U CN212205086U (en) | 2019-12-31 | 2019-12-31 | Electric heating tube plate structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212205086U true CN212205086U (en) | 2020-12-22 |
Family
ID=73809959
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922466228.0U Active CN212205086U (en) | 2019-12-31 | 2019-12-31 | Electric heating tube plate structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212205086U (en) |
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2019
- 2019-12-31 CN CN201922466228.0U patent/CN212205086U/en active Active
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