Heat tracing cable explosion-proof terminal and quick connecting device

Abstract

The utility model relates to a heat tracing cable explosion-proof terminal and a quick connecting device, which comprise a main body, a binding post, a conductive connecting sheet, a sealing ring, a sealing block, a threaded hole, a first through hole, a first threaded hole, a left side sealing cover, a right side sealing cover, an upper side sealing cover, a convex connecting part, a concave connecting part, a second through hole and a second threaded hole, and the convex connecting part is matched with the concave connecting part. The device is simple in structure and low in manufacturing cost, original terminal equipment does not need to be disassembled, multiple pieces of equipment can be utilized to quickly form sealing connection equipment, the purpose of quickly extending or connecting multiple lines is achieved, and the safety explosion-proof performance of quick connection of the heat tracing cable joint is improved.

Description

Technical Field

[0001] This patent application belongs to the technical field of heating line protection, and more specifically, relates to an explosion-proof terminal and a quick connection device for a heating cable. Background Art

[0002] In some explosive gas environments, equipment and pipelines need to be protected by explosion-proof heating equipment in winter. The heating cables are wrapped around the outside of the equipment and pipelines, and the outer layer is insulated. Then the heating cables of the equipment and pipelines need to be connected or replaced. However, when it is necessary to add equipment extension cables or replace heating cables with existing equipment, the explosion-proof terminals or explosion-proof junction boxes need to be replaced. This method is troublesome to install and disassemble, and the work efficiency is low, which does not meet the requirements of efficiency-enhancing operations. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide an explosion-proof terminal and a quick connection device for a heating cable, which can quickly extend and connect multiple heating cable lines, saving time and labor, and improving safety and explosion-proof performance.

[0004] In order to solve the above problems, the technical solution adopted by the utility model is:

[0005] A heating cable explosion-proof terminal and quick connection device, including a main body, a terminal post, a connecting piece, a sealing ring, a sealing block, a threaded hole, a first through hole, a first threaded hole, a left sealing cover, a right sealing cover, an upper sealing cover, a protruding connection part, a recessed connection part, a second through hole, a second threaded hole, and a fixing screw. The terminal post and the connecting piece are located inside the main body. The main body is a structure that is protruding on the left side and recessed on the right side. The connecting piece is made of a metal conductive material.

[0006] A protruding connection part is provided on the left side of the main body, the left edge of the connecting piece is located in the protruding connection part, a sealing groove is provided on the left side of the protruding connection part, a sealing ring is installed in the sealing groove, a first threaded hole for fixing a screw is provided on the upper and lower sides of the protruding connection part, the protruding connection part is connected to a left sealing cover, the left sealing cover is a recessed structure, it is adapted to the protruding connection part, and a first through hole is provided on the upper and lower sides thereof, the first threaded hole and the first through hole correspond to each other and are used for screwing in the screw;

[0007] A recessed connection part is provided on the right side of the main body, the protruding connection part and the recessed connection part are matched, the right edge of the connecting piece is extended and located in the recessed connection part, the upper and lower sides of the recessed connection part have second through holes, the recessed connection part is connected to a right sealing cover, the right sealing cover is a protruding structure, the protruding end of which is matched with the recessed connection part, the protruding end of which is also provided with a sealing ring through a sealing groove, and the upper and lower sides of which are provided with second threaded holes, the second through holes and the second threaded holes correspond to each other and are used for screwing in screws;

[0008] The terminal is located above the main body, and the connecting piece connects the two sides of the main body and the terminal; the sealing block for the cable to pass through is arranged above the main body, and the terminal is connected to the wire core of the cable; a sealing ring is also installed above the main body through a sealing groove, and the sealing ring is crimped with the upper sealing cover to form a sealed space for the terminal above the main body.

[0009] Furthermore, the right side sealing cover includes a base portion and a protruding portion which are connected to each other, the protruding portion is adapted to the recessed connecting portion, and an extension length of the base portion is greater than an extension length of the protruding portion.

[0010] Furthermore, the base portion and the protruding portion are integrally formed and both are rectangular in shape, and the extended length of the base portion is 1.5 to 3 times the extended length of the protruding portion.

[0011] Furthermore, the left sealing cover includes a base and a recessed portion located in the base, the recessed portion is adapted to the protruding connecting portion, and the length of the recessed portion is 1 / 2 to 1 / 3 of the length of the base.

[0012] Furthermore, the number of the terminals is 2 to 5, and the plurality of terminals are randomly arranged inside the main body.

[0013] Further, the sealing block is rectangular or circular and is arranged in the middle above the main body.

[0014] Furthermore, the sealing ring and the sealing block are both made of rubber.

[0015] Due to the adoption of the above technical solution, the beneficial effects achieved by the utility model are:

[0016] The device has a simple structure, low manufacturing cost, and is easy to assemble. It can quickly extend and connect multiple heating cable lines without replacing explosion-proof terminals or explosion-proof junction boxes. It has high installation and disassembly efficiency, saves time and effort, and improves safety and explosion-proof performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the device.

[0018] Figure 2 It is a front structural schematic diagram of the device.

[0019] Figure 3 It is a schematic diagram of the right-side structure of the device.

[0020] Among them: 1. Terminal; 2. Connecting piece; 3. Sealing ring; 4. Sealing block; 5. Threaded hole; 6. First through hole; 7. First threaded hole; 8. Left sealing cover; 9. Right sealing cover; 10. Upper sealing cover; 11. Protruding connecting part; 12. Recessed connecting part; 13. Second through hole; 14. Second threaded hole. DETAILED DESCRIPTION

[0021] The utility model is further described in detail below in conjunction with the embodiments.

[0022] An explosion-proof terminal and quick-connect device for a heating cable, such as Figure 1-Figure 3 , including a main body, a terminal 1, a connecting piece 2, a sealing ring 3, a sealing block 4, a threaded hole 5, a first through hole 6, a first threaded hole 7, a left sealing cover 8, a right sealing cover 9, an upper sealing cover 10, a protruding connection part 11, a recessed connection part 12, a second through hole 13, a second threaded hole 14, a fixing screw, etc. The terminal 1 and the connecting piece 2 are located inside the main body, and the main body is a structure with a protruding left side and a recessed right side; the connecting piece 2 is made of a metal conductive material, such as copper, aluminum or alloy, etc., and the threaded hole 5 is used for top screw connection.

[0023] A protruding connection part 11 is provided on the left side of the main body, and the left edge of the connecting piece 2 is located in the protruding connection part 11. A sealing groove is provided on the left side of the protruding connection part 11, and a sealing ring 3 is installed in the sealing groove. The upper and lower sides of the protruding connection part 11 are provided with first threaded holes 7 for fixing screws. The protruding connection part 11 is connected to a left sealing cover 8. The left sealing cover 8 is a recessed structure, which is adapted to the protruding connection part 11, and the upper and lower sides thereof are provided with first through holes 6. The first threaded hole 7 and the first through hole 6 correspond to each other and are used for screwing in screws.

[0024] like Figure 1-Figure 3 The right side of the main body is provided with a recessed connection part 12, and the protruding connection part 11 and the recessed connection part 12 are adapted. The right edge of the connecting piece 2 is extended and located in the recessed connection part 12. The upper and lower sides of the recessed connection part 12 have second through holes 13. The recessed connection part 12 is connected to the right sealing cover 9. The right sealing cover 9 is a protruding structure, and its protruding end is adapted to the recessed connection part 12. Its protruding end is also provided with a sealing ring 3 through a sealing groove, and its upper and lower sides are provided with second threaded holes 14. The second through holes 13 and the second threaded holes 14 correspond to each other and are screwed in;

[0025] The terminal 1 is located above the main body, and the connecting piece 2 connects the two sides of the main body and the terminal 1; the sealing block 4 for the cable to pass through is arranged above the main body, and the terminal 1 is connected to the wire core of the cable; a sealing ring 3 is also installed above the main body through a sealing groove, and the sealing ring 3 is crimped with the upper sealing cover 10 to form a sealed space for the terminal 1 above the main body.

[0026] Combination Figure 1 , Figure 2 The right sealing cover 9 includes a base portion and a protruding portion connected to each other, the protruding portion is adapted to the recessed connecting portion 12, and the extension length of the base portion is greater than the extension length of the protruding portion. The base portion and the protruding portion are integrally formed, and both are rectangular in shape. The extension length of the base portion is 1.5 to 3 times, preferably 2 times, of the extension length of the protruding portion.

[0027] Combination Figure 1 , Figure 2 The left sealing cover 8 includes a base and a recessed portion in the base, the recessed portion is matched with the protruding connecting portion 11, and the length of the recessed portion is 1 / 2 to 1 / 3 of the length of the base, preferably 1 / 2.

[0028] The number of terminals 1 is 2 to 5. Figure 1 There are two terminals, and the plurality of terminals 1 are randomly arranged inside the main body, and the plurality of terminals 1 are not in a straight line.

[0029] Figure 2 In the embodiment, the sealing block 4 is rectangular or circular and is arranged in the middle above the main body. In terms of material selection, the sealing ring 3 and the sealing block 4 are both made of rubber or other organic wear-resistant materials. Figure 2 In the dotted line above the connecting piece 2: the top dotted line is the concave part where the top terminal 1 is located, the dotted line on the right is the concave part on the right, and the dotted line at the bottom is the part where the connecting piece 2 is connected to the terminal 1. The function of the connecting piece 2 is to conduct electricity, and the material can be a conductive metal such as copper, aluminum or its alloy, which serves to connect the terminal 1 with the protruding connecting part 11 on the left, and at the same time extends to the concave connecting part 12 on the right. When the combined connection is not required, the left sealing cover 8 and the right sealing cover 9 are connected to the main body to form a sealed space. Example

[0030] The terminal 1 and the connecting piece 2 are inside the main body. The connecting piece 2 connects the left and right sides and the upper terminal 1. The sealing ring 3 is installed through the sealing groove. The upper sealing cover 10, the left sealing cover 8 and the right sealing cover 9 are connected to the main body through fixing screws. The cable passes through the main body through the sealing block 4, and the cable core is connected with the terminal 1. There is a sealing groove on the upper part of the main body to install the sealing ring 3. The sealing ring 3 is crimped with the upper sealing cover 10, and the upper sealing cover 10 is fixed with fixing screws to form a sealed space for the upper terminal 1.

[0031] The left side of the main body is a protruding design with a recessed connecting piece 2, and a sealing groove is installed on the left side of the protruding main body with a sealing ring 3, and the upper and lower sides have first threaded holes 7 for fixing screws. The left side sealing cover 8 is a recessed design, and has a first screw hole 6 penetrating the upper and lower sides, so that the screw passes through the left side sealing cover 8 and is fixed in the first threaded hole 7 on the left side of the main body to form a sealed space.

[0032] The right side of the main body is a recessed design with a protruding connecting piece 2 inside, and second through holes 13 passing through the upper and lower sides. The right side sealing cover 9 is a protruding style, and there is also a sealing groove at the protruding end to install the sealing ring 3. The upper and lower sides have second threaded holes 14 for fixing screws. The screws pass through the second through hole 13 passing through the right side of the main body and are fixed in the second threaded hole 14 of the right side sealing cover 9 to form a sealed space.

[0033] When using:

[0034] When the cable is connected in the upper space, the device with the left sealing cover 8 and the right sealing cover 9 in a closed state can be used as a heating cable terminal. When the heating cable needs to be extended or multiple heating cables need to be connected, such as when there are devices A and B, the cables can be connected to the upper sealed space, and then the left sealing cover 8 and the right sealing cover 9 can be opened. Since the specifications, sizes, and component connections of the protruding connection part 11 and the recessed connection part 12 are compatible, the left side of device A is connected to the right side of device B and fixed with screws to form a sealed connection device, so as to achieve cable connection and extension. This process does not require the removal of the original terminal device. In this way, multiple devices can be used to quickly form a sealed connection device to achieve the purpose of quickly extending or connecting multiple lines, thereby improving the safety and explosion-proof performance of the quick connection of the heating cable joint.

Claims

1. An explosion-proof terminal and quick connection device for a heating cable, characterized in that: The invention comprises a main body, a terminal (1), a connecting piece (2), a sealing ring (3), a sealing block (4), a first through hole (6), a first threaded hole (7), a left sealing cover (8), a right sealing cover (9), an upper sealing cover (10), a protruding connecting portion (11), a recessed connecting portion (12), a second through hole (13), and a second threaded hole (14). The terminal (1) and the connecting piece (2) are located inside the main body. The main body is a structure in which the left side is protruding and the right side is recessed. The connecting piece (2) is made of a metal conductive material. A protruding connection part (11) is provided on the left side of the main body, the left edge of the connecting piece (2) is located in the protruding connection part (11), a sealing groove is provided on the left side of the protruding connection part (11), a sealing ring (3) is installed in the sealing groove, the upper and lower sides of the protruding connection part (11) are provided with first threaded holes (7) for fixing screws, the protruding connection part (11) is connected to a left sealing cover (8), the left sealing cover (8) is a recessed structure, it is adapted to the protruding connection part (11), and the upper and lower sides thereof are provided with first through holes (6), the first threaded hole (7) and the first through hole (6) correspond to each other and are used for screwing screws; A recessed connection portion (12) is provided on the right side of the main body, the protruding connection portion (11) and the recessed connection portion (12) are matched, the right side edge of the connecting piece (2) is extended and located in the recessed connection portion (12), the upper and lower sides of the recessed connection portion (12) have second through holes (13), the recessed connection portion (12) is connected to a right side sealing cover (9), the right side sealing cover (9) is a protruding structure, the protruding end of which is matched with the recessed connection portion (12), the protruding end of which is also provided with a sealing ring (3) through a sealing groove, the upper and lower sides of which are provided with second threaded holes (14), the second through holes (13) and the second threaded holes (14) correspond to each other and are used for screwing in; The terminal (1) is located above the main body, and the connecting piece (2) is connected to both sides of the main body and the terminal (1); a sealing block (4) for the cable to pass through is arranged above the main body, and the terminal (1) is connected to the wire core of the cable; a sealing ring (3) is also installed above the main body through a sealing groove, and the sealing ring (3) is crimped and matched with the upper sealing cover (10) so that the terminal (1) above the main body forms a sealed space.

2. The explosion-proof terminal and quick-connect device for heating cables according to claim 1, characterized in that: The right sealing cover (9) comprises a base portion and a protruding portion which are connected to each other, the protruding portion is adapted to the recessed connecting portion (12), and the extension length of the base portion is greater than the extension length of the protruding portion.

3. The explosion-proof terminal and quick-connect device for heating cables according to claim 2, characterized in that: The base part and the protruding part are integrally formed and both are rectangular in shape. The extended length of the base part is 1.5 to 3 times the extended length of the protruding part.

4. The explosion-proof terminal and quick-connect device for heating cables according to claim 1, characterized in that: The left sealing cover (8) comprises a base and a recessed portion located in the base, the recessed portion is adapted to fit the protruding connecting portion (11), and the length of the recessed portion is 1 / 2 to 1 / 3 of the length of the base.

5. The explosion-proof terminal and quick-connect device for heating cables according to claim 1, characterized in that: The number of the binding posts (1) is 2 to 5, and the plurality of binding posts (1) are arranged inside the main body.

6. An explosion-proof terminal and quick-connect device for heating cables according to any one of claims 1 to 5, characterized in that: The sealing block (4) is rectangular or circular and is arranged in the middle above the main body.

7. The explosion-proof terminal and quick-connect device for heating cables according to claim 6, characterized in that: The sealing ring (3) and the sealing block (4) are both made of rubber.

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