Sealing binding post combination structure

Abstract

The utility model discloses a sealing binding post combination structure, and relates to the related technical field of electric furnaces. The furnace comprises a furnace shell, a steel shell, a first porcelain tube, a second porcelain tube and a binding post, a furnace lining is fixed to the inner arc face of the furnace shell, a wire groove and a protection cavity which are communicated are formed in the furnace lining, the second porcelain tube is fixed in the wire groove, the steel shell is arranged in the protection cavity, and the first porcelain tube is arranged in an inner cavity of the steel shell; inner rods distributed in an annular array mode are fixed between the peripheral face of the first porcelain tube and the inner wall of the steel shell, the space between the outer wall of the first porcelain tube and the inner wall of the steel shell is further filled with inner pouring materials, the space between the outer wall of the steel shell and the inner wall of the protection cavity is filled with outer pouring materials, and the close ends of the first porcelain tube and the second porcelain tube are in threaded connection. A binding post is inserted into one port, away from the second porcelain tube, of the first porcelain tube. According to the utility model, the porcelain tube I, the porcelain tube II, the steel shell, the inner pouring material and the outer pouring material are arranged, so that the problems that the temperature runaway phenomenon easily occurs at the wiring part of the high-temperature furnace and the sealing property of the wiring part of the high-temperature furnace needs to be increased are solved.

Description

Technical Field

[0001] The utility model belongs to the technical field related to electric furnaces, and particularly relates to a sealed terminal post combination structure. Background Art

[0002] An electric furnace is a heating furnace that converts the electric energy in the furnace into heat to heat the workpiece. Electric furnaces can be divided into resistance furnaces, induction furnaces, arc furnaces, plasma furnaces, electron beam furnaces, etc. As the name suggests, electric furnaces need to be driven by electric energy, so wiring is required, which requires auxiliary use of terminal blocks, etc. However, the wiring position of the terminal blocks has the following disadvantages after power is connected:

[0003] 1. Because the electric furnace has a high temperature when working, once the wiring of the high-temperature furnace runs away from the temperature, it is easy to cause heat leakage and burn the cable, resulting in abnormal status of the overall equipment and increased maintenance costs, so a good anti-runaway structure is needed;

[0004] 2. Secondly, this type of wiring connection structure needs to be connected to the electric heating structure in the electric furnace, so the sealing of the connection between the terminal and the furnace shell needs to be guaranteed to a certain extent. Utility Model Content

[0005] The utility model aims to provide a sealed terminal assembly structure, which solves the problem of easy temperature leakage at the high-temperature furnace connection point and the need to increase the sealing of the high-temperature furnace connection point by arranging a porcelain tube 1, a porcelain tube 2, a steel shell, an inner casting material and an outer casting material.

[0006] In order to solve the above technical problems, the utility model is realized by the following technical solutions:

[0007] The utility model is a sealed terminal combination structure, comprising a furnace shell, a steel shell, a porcelain tube 1, a porcelain tube 2 and a terminal. A furnace lining is fixed on the inner arc surface of the furnace shell, a connected wire groove and a protection chamber are opened in the furnace lining, and the wire groove penetrates the inner arc surface of the furnace lining, and the protection chamber penetrates the outer arc surface of the furnace lining and the furnace shell; the porcelain tube 2 is fixed in the wire groove, a steel shell is arranged in the protection chamber, and the porcelain tube 1 is arranged in the inner cavity of the steel shell, inner rods distributed in a ring array are fixed between the outer circumference of the porcelain tube 1 and the inner wall of the steel shell, and inner casting material is also filled between the outer wall of the porcelain tube 1 and the inner wall of the steel shell, and outer casting material is filled between the outer wall of the steel shell and the inner wall of the protection chamber, the porcelain tube 1 and the porcelain tube 2 are threadedly connected at one end thereof, and a terminal is inserted into a port of the porcelain tube 1 away from the porcelain tube 2.

[0008] Furthermore, one end of the porcelain tube 2 away from the porcelain tube 1 extends out of the wire groove, and a threaded opening is provided in an end of the porcelain tube 2 close to the porcelain tube 1. A threaded head is fixed to the end of the porcelain tube 1 close to the porcelain tube 2, and a sealing ring is provided on the outer sleeve of the threaded head. The threaded head is screwed into the threaded opening until the sealing ring abuts against the end of the porcelain tube 2.

[0009] Furthermore, outer rods distributed in a ring array are fixed to the outer wall of the steel shell, and one end of the outer rods away from the steel shell contacts the inner wall of the protection chamber.

[0010] Furthermore, a fixed flange is fixed on the outer arc surface of the furnace shell outside the protection chamber, one end of the steel shell away from the second porcelain tube extends out of the protection chamber, a movable flange is fixed on the outer circumferential surface of the part of the steel shell extending out of the protection chamber, and the movable flange and the fixed flange are screwed together and locked with bolts.

[0011] Furthermore, one end of the porcelain tube 1 away from the porcelain tube 2 extends out of the steel shell, one end of the terminal away from the furnace shell extends out of the porcelain tube 1, and a terminal ear is fixed on the outer circumferential surface of the terminal extending out of the porcelain tube.

[0012] Furthermore, the inner casting material and the outer casting material are both in contact with one end of the protection chamber close to the wire duct.

[0013] The utility model has the following beneficial effects:

[0014] 1. The utility model solves the problem of easy temperature runaway at the connection point of the high-temperature furnace by arranging porcelain tube 1, porcelain tube 2, steel shell, inner casting material and outer casting material; when installing the terminal, firstly, the porcelain tube 2 is placed in the wire trough and fixed to the furnace lining, and the porcelain tube 1 is fixed to the steel shell through the inner rod, and the porcelain tube 1 and the steel shell are extended into the protection chamber, and the porcelain tube 1 and the porcelain tube 2 are screwed and fixed, and the cable is extended into the porcelain tube 1 and the porcelain tube 2, and then the terminal is extended into the porcelain tube 1 after being connected with the terminal, and then the corresponding inner casting material and outer casting material are filled, and the whole connection point is protected by multiple layers, the porcelain tube has good wear resistance and high temperature resistance, and is relatively firmly installed with the inner casting material and the outer casting material enclosure, and the overall anti-temperature runaway performance is good, and the cable connection point will not be burned.

[0015] 2. The utility model solves the problem of the need to increase the sealing of the connection points of the high-temperature furnace by arranging inner casting materials and outer casting materials; after the porcelain tube 1 and the porcelain tube 2 are connected, the position of the steel shell is fixed accordingly, and then the inner casting material is filled between the outer wall of the porcelain tube 1 and the inner wall of the steel shell, and the outer casting material is filled between the outer wall of the steel shell and the inner wall of the protective chamber, and the inner casting material and the outer casting material are both connected to the end wall of the protective chamber, that is, they are connected to the furnace lining as a whole, and the installation is firm and reliable, with sufficient sealing, and a sealing ring is also arranged between the porcelain tube 1 and the porcelain tube 2 to ensure the sealing, and no temperature run-away phenomenon will occur. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for describing the embodiments are briefly introduced below.

[0017] Figure 1 It is a three-dimensional diagram of a sealed terminal assembly structure;

[0018] Figure 2 This is the structural diagram of the furnace shell and furnace lining after sectioning;

[0019] Figure 3 for Figure 2 Another structural diagram from another perspective;

[0020] Figure 4 It is a cross-sectional view of the furnace shell and furnace lining;

[0021] Figure 5 This is the connection diagram of porcelain tube 1 and porcelain tube 2;

[0022] Figure 6 This is the disassembly diagram of porcelain tube one and porcelain tube two.

[0023] Reference numerals:

[0024] 1. Furnace shell; 101. Furnace lining; 102. Fixed flange; 103. Wire duct; 104. Protective chamber; 2. Steel shell; 201. External casting material; 202. External rod; 3. Porcelain tube 1; 301. Internal casting material; 302. Internal rod; 303. Sealing ring; 304. Threaded head; 4. Porcelain tube 2; 401. Threaded mouth; 5. Terminal; 501. Terminal ear; 6. Movable flange; 601. Bolt. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0026] See also Figure 1-6 As shown, the utility model is a sealed terminal assembly structure, including a furnace shell 1, a steel shell 2, a porcelain tube 1 3, a porcelain tube 2 4 and a terminal 5, a furnace lining 101 is fixed on the inner arc surface of the furnace shell 1, a connected wire groove 103 and a protective chamber 104 are opened in the furnace lining 101, and the wire groove 103 passes through the inner arc surface of the furnace lining 101, and the protective chamber 104 passes through the outer arc surface of the furnace lining 101 and the furnace shell 1; a porcelain tube 2 4 is fixed in the wire groove 103, and a connected wire groove 103 and a protective chamber 104 are opened in the protective chamber 104. A steel shell 2 is provided, and a porcelain tube 3 is provided in the inner cavity of the steel shell 2, inner rods 302 distributed in a ring array are fixed between the outer circumference of the porcelain tube 3 and the inner wall of the steel shell 2, and an inner casting material 301 is also filled between the outer wall of the porcelain tube 3 and the inner wall of the steel shell 2, and an outer casting material 201 is filled between the outer wall of the steel shell 2 and the inner wall of the protection chamber 104, the porcelain tube 3 and the porcelain tube 2 4 are connected by threads at one end thereof, and a terminal 5 is inserted into a port of the porcelain tube 3 away from the porcelain tube 2 4;

[0027] First, the furnace shell 1 and the furnace lining 101 are conventional structures of high-temperature furnaces, and a wire trough 103 is arranged inside thereof for installing the porcelain tube 24, and the protection chamber 104 is used for installing the porcelain tube 3 and the connection protection of the wiring point. The furnace shell 1 and the furnace lining 101 are both local structures. In order to display the drawing of the wiring point, the porcelain tube 3 and the porcelain tube 24 are used to protect the power connection cable. After the power connection cable is connected to the terminal 5, the terminal 5 is inserted into the porcelain tube 3. The outside of the porcelain tube 3 is connected to the steel shell 2 through the inner rod 302, so that the structures of the two remain stable and are installed synchronously without deviation. After the porcelain tube 3 is fixed, the inner casting material 301 is filled between the outer wall of the porcelain tube 3 and the inner wall of the steel shell 2 for temperature locking protection. At the same time, the outer casting material 201 is filled between the outer wall of the steel shell 2 and the inner wall of the protection chamber 104 to further increase the temperature locking protection effect and avoid the occurrence of temperature running.

[0028] One end of the porcelain tube 2 4 away from the porcelain tube 1 3 extends out of the wire groove 103, and the cables inside it are connected to the electric heating elements of the electric furnace. The end of the porcelain tube 2 4 extending out of the wire groove 103 is a local structure and is not specifically limited. It is laid according to the actual distribution of cables. A threaded opening 401 is provided in an end of the porcelain tube 2 4 close to the porcelain tube 3, and a threaded head 304 is fixed to the end of the porcelain tube 3 close to the porcelain tube 2 4, and a sealing ring 303 is provided on the outer sleeve of the threaded head 304, and the threaded head 304 is screwed into the threaded opening 401 until the sealing ring 303 abuts against the end of the porcelain tube 2 4; the porcelain tube 1 3 extends into the protection chamber 104, and the threaded head 304 at its end is screwed into the threaded opening 401 until the sealing ring 303 is located between the ends of the porcelain tube 1 3 and the porcelain tube 2 4, and is tightly locked, thereby completing the connection between the porcelain tube 1 3 and the porcelain tube 2 4, and at the same time, the position of the steel shell 2 is also defined.

[0029] Outer rods 202 distributed in a circular array are also fixed to the outer wall of the steel shell 2, and the end of the outer rods 202 away from the steel shell 2 contacts the inner wall of the protection chamber 104; after the steel shell 2 extends into the protection chamber 104 along with the porcelain tube 3, due to the design of the outer rods 202, the rotation diameter of the outer rods 202 is equal to the diameter of the protection chamber 104, so the outer end of the outer rods 202 just contacts the inner wall of the protection chamber 104, ensuring that the steel shell 2 and the porcelain tube 3 are centered, facilitating the installation of the porcelain tube 3 and the porcelain tube 4.

[0030] A fixed flange 102 is fixed on the outer arc surface of the furnace shell 1 outside the protection chamber 104, and one end of the steel shell 2 away from the porcelain tube 2 4 extends out of the protection chamber 104. A movable flange 6 is fixed on the outer circumferential surface of the portion of the steel shell 2 extending out of the protection chamber 104, and bolts 601 are screwed together between the movable flange 6 and the fixed flange 102 to lock and fix;

[0031] The fixed flange 102 is fixed to the outer wall of the furnace shell 1, and the movable flange 6 is connected to the steel shell 2. When the porcelain tube 1 3 and the porcelain tube 2 4 are connected in place, the position of the steel shell 2 is also kept fixed. At this time, the movable flange 6 and the fixed flange 102 also fit together, and the bolts 601 can be screwed in to fix them.

[0032] One end of the porcelain tube 3 away from the porcelain tube 2 4 extends out of the steel shell 2, and one end of the terminal 5 away from the furnace shell 1 extends out of the porcelain tube 3, and a wiring ear 501 is fixed on the outer peripheral surface of the part of the terminal 5 extending out of the porcelain tube 3; after the terminal 5 is connected to the cable, it is inserted into the porcelain tube 3, and the other end extends out of the porcelain tube 3, and the wiring ear 501 on the outer periphery of the terminal 5 is connected to the external power supply wire.

[0033] Both the inner casting material 301 and the outer casting material 201 are in contact with one end of the protection chamber 104 close to the wire duct 103 .

[0034] The specific working principle of the utility model is as follows: first, the furnace shell 1 and the furnace lining 101 are conventional structures of high-temperature furnaces, and a wire groove 103 is arranged inside thereof for installing the porcelain tube 2 4. The outside of the porcelain tube 3 is connected to the steel shell 2 through the inner rod 302, so that the structures of the two remain stable and are installed synchronously. The porcelain tube 3 and the steel shell 2 are synchronously extended into the protection chamber 104. At this time, the outer end of the outer rod 202 just contacts the inner wall of the protection chamber 104 to ensure that the steel shell 2 and the porcelain tube 3 are centered. The threaded head 304 at the end of the porcelain tube 3 is screwed into the threaded port 401 until the sealing ring 303 is located between the ends of the porcelain tube 3 and the porcelain tube 2 4, and is tightly locked, thereby completing the connection between the porcelain tube 3 and the porcelain tube 2 4, and at the same time the position of the steel shell 2 is also is defined and completed; then, the inner casting material 301 is filled between the outer wall of the porcelain tube 3 and the inner wall of the steel shell 2 for temperature locking protection, and the outer casting material 201 is filled between the outer wall of the steel shell 2 and the inner wall of the protection chamber 104 to further increase the temperature locking protection effect, and the inner casting material 301 and the outer casting material 201 are both connected to the end wall of the protection chamber 104, that is, they are connected to the furnace lining 101 as a whole, the installation is firm and reliable, and the sealing is sufficient. At this time, the movable flange 6 and the fixed flange 102 also correspond exactly, and the bolt 601 can be screwed in to fix it; finally, after the terminal 5 is connected to the cable, it is inserted into the porcelain tube 3, and the other end extends out of the porcelain tube 3, and the wiring ears 501 on the outer periphery of the terminal 5 are connected to the external power supply.

[0035] The above are only preferred embodiments of the present invention and do not limit the present invention. Any modification to the technical solutions recorded in the aforementioned embodiments and any equivalent replacement of some of the technical features therein, any modification, equivalent replacement, and improvement made are all within the protection scope of the present invention.

Claims

1. A sealed terminal assembly structure, comprising a furnace shell (1), a steel shell (2), a first porcelain tube (3), a second porcelain tube (4) and a terminal (5), characterized in that: A furnace lining (101) is fixed on the inner arc surface of the furnace shell (1); a connected wire groove (103) and a protective chamber (104) are provided in the furnace lining (101); the wire groove (103) penetrates the inner arc surface of the furnace lining (101); the protective chamber (104) penetrates the outer arc surface of the furnace lining (101) and the furnace shell (1); a second porcelain tube (4) is fixed in the wire groove (103); a steel shell (2) is arranged in the protective chamber (104); and a first porcelain tube (3) is arranged in the inner cavity of the steel shell (2). Inner rods (302) distributed in a ring array are fixed between the outer circumference of the porcelain tube one (3) and the inner wall of the steel shell (2), and inner casting material (301) is also filled between the outer wall of the porcelain tube one (3) and the inner wall of the steel shell (2), and outer casting material (201) is filled between the outer wall of the steel shell (2) and the inner wall of the protection chamber (104), and the porcelain tube one (3) and the porcelain tube two (4) are connected by threads at one end thereof, and a terminal (5) is inserted into a port of the porcelain tube one (3) away from the porcelain tube two (4).

2. A sealed terminal assembly structure according to claim 1, characterized in that: One end of the second porcelain tube (4) away from the first porcelain tube (3) extends out of the wire groove (103); a threaded opening (401) is provided in an end of the second porcelain tube (4) close to the first porcelain tube (3); a threaded head (304) is fixed to the end of the first porcelain tube (3) close to the second porcelain tube (4); a sealing ring (303) is provided on the outer sleeve of the threaded head (304); the threaded head (304) is screwed into the threaded opening (401) until the sealing ring (303) abuts against the end of the second porcelain tube (4).

3. The sealed terminal assembly structure according to claim 1, characterized in that: External rods (202) distributed in a ring array are also fixed on the outer wall of the steel shell (2), and one end of the external rods (202) away from the steel shell (2) contacts the inner wall of the protection chamber (104).

4. The sealed terminal assembly structure according to claim 1, characterized in that: A fixed flange (102) is fixed on the outer arc surface of the furnace shell (1) outside the protection chamber (104); one end of the steel shell (2) away from the second porcelain tube (4) extends out of the protection chamber (104); a movable flange (6) is fixed on the outer peripheral surface of the portion of the steel shell (2) extending out of the protection chamber (104); and bolts (601) are screwed together between the movable flange (6) and the fixed flange (102) to lock and fix them.

5. The sealed terminal assembly structure according to claim 1, characterized in that: One end of the porcelain tube 1 (3) away from the porcelain tube 2 (4) extends out of the steel shell (2), and one end of the terminal post (5) away from the furnace shell (1) extends out of the porcelain tube 1 (3), and a terminal lug (501) is fixed on the outer circumferential surface of the part of the terminal post (5) extending out of the porcelain tube 1 (3).

6. The sealed terminal assembly structure according to claim 1, characterized in that: The inner casting material (301) and the outer casting material (201) are both in contact with one end of the protection chamber (104) close to the wire duct (103).

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