Junction box

Abstract

The utility model discloses a junction box, which comprises a stainless steel shell and a wiring end cover, the shell comprises a first shell body and a second shell body, the opening end of the first shell body and the opening end of the second shell body are detachably connected in a sealing mode through threads, and the closed end of the first shell body is provided with a first screw hole matched with a temperature measuring cable; one end of the wiring end cover penetrates through the closed end of the second shell, and the wiring end cover is in sealed connection with the second shell; and the wiring end cover is provided with a through hole matched with an electric wire. According to the utility model, the protection of the temperature measuring cable connector is improved, and the corrosion resistance, the high and low temperature resistance and the mechanical performance are improved. In addition, the spiral uncovering structure of the shell has the performances of complete sealing, corrosion prevention, dust prevention and water prevention, is firm in fixation, and can meet the field explosion-proof requirement.

Description

Technical Field

[0001] The utility model relates to the field of junction boxes, in particular to a junction box. Background Art

[0002] The hot spot detection and early warning system on the surface of the gasifier is equipped with an HSD-T-CTTC thermocouple temperature measuring cable. In order to protect the connector of the temperature measuring cable, a protective box needs to be installed outside the connector. However, the existing protective box has the following shortcomings:

[0003] 1. According to the installation requirements, the protection box itself needs to have the function of being detachable, but the disassembly and assembly structure of the existing protection box has the problems of poor sealing and low explosion-proof grade.

[0004] 2. As the disassembly and assembly structure is not optimized, the mechanical properties of the protection box itself are not good, and after a long time, the dust and water resistance effect is not ideal. In addition, the disassembly and assembly structure is inconvenient, which increases the difficulty of later maintenance. Utility Model Content

[0005] Aiming at the defects in the prior art, the disassembly structure of the shell is optimized to improve the sealing, waterproof, dustproof, explosion-proof, etc., and facilitate later maintenance. The utility model provides a junction box, including a stainless steel shell and a terminal cover; the shell includes a first shell and a second shell, the open end of the first shell and the open end of the second shell are detachably sealed and connected by threads, and the closed end of the first shell is provided with a first screw hole adapted to the temperature measuring cable; one end of the terminal cover passes through the closed end of the second shell, and the terminal cover and the second shell are sealed and connected; the terminal cover is provided with a through hole adapted to the wire.

[0006] The beneficial effects of the utility model are as follows: the temperature measuring cable is electrically connected to a connector in the first shell after passing through the first threaded hole, and the temperature measuring cable and the first shell are sealed. The wire is electrically connected to another connector in the second shell after passing through the through hole, the wire is sealed with the terminal cover, and the terminal cover is sealed with the second shell, and finally the two connectors are plugged in, and the first shell and the second shell are sealed and butted with threads that can be detached. Threaded butt joint has a simple sealing structure, and does not require other structures that need to be sealed to be provided on the first shell and the second shell. It is easy to disassemble and assemble, and has better explosion-proof performance. The two connectors are completely sealed in the shell, are not damaged by pulling, collision, etc., and have good mechanical properties. The shell itself has the characteristics of corrosion resistance, heat resistance, and high low-temperature strength.

[0007] Preferably, the first shell is provided with a male thread and the second shell is provided with a female thread, or the first shell is provided with a female thread and the second shell is provided with a male thread. The first shell and the second shell can be assembled and disassembled by rotating, and the operation is simple.

[0008] Preferably, a stud is provided at one end of the terminal cover, and a second screw hole adapted to the stud is provided at the closed end of the second shell, and the stud is screwed into the second screw hole, thereby making the terminal cover and the second shell sealed. In addition, a nut is provided at the other end of the terminal cover, and the stud is provided with an adjustment nut located outside the second shell. The stud extends into the second shell and is sealed by a thread, specifically, the stud is screwed in by the nut, and the screwing length depends on the specific situation. After being screwed in, the current position can be locked by an external adjustment nut.

[0009] Preferably, the shell is cylindrical in shape and made entirely of stainless steel, and is mounted on the upper portion of a reinforcing fixture of the gasifier using a cable tie.

[0010] Preferably, the inner diameter of the shell is 28-30 mm.

[0011] Preferably, the temperature measuring cable is provided with a threaded tube adapted to the first screw hole on the outside. In order to improve the sealing and adaptability, a threaded tube with matching size is used to seal and connect with the first screw hole to further improve the sealing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the specific implementation of the utility model or the technical solution in the prior art, the following is a brief introduction to the drawings required for the specific implementation or the prior art description. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, each element or part is not necessarily drawn according to the actual scale.

[0013] Figure 1 It is a structural schematic diagram of this embodiment;

[0014] Figure 2 for Figure 1 Schematic diagram after the connector is installed;

[0015] Figure 3 for Figure 2 Schematic diagram of the first shell and the second shell after docking.

[0016] In the drawings, there are a first housing 1, a second housing 2, a terminal cover 3, a first screw hole 4, a threaded tube 5, a second screw hole 6, a stud 7, a nut 8, an adjusting nut 9, and a connector 10. DETAILED DESCRIPTION

[0017] The following embodiments of the technical solution of the utility model are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the utility model, and are therefore only used as examples, and cannot be used to limit the protection scope of the utility model.

[0018] It should be noted that, unless otherwise specified, the technical terms or scientific terms used in this application should have the common meanings understood by technicians in the field to which the utility model belongs.

[0019] like Figure 1 As shown, this embodiment provides a junction box, including a stainless steel shell and a terminal cover 3. The shape of the entire shell is cylindrical. Stainless steel is used as a whole, and the shell is installed on the upper part of the reinforcement fixture of the gasifier by using a cable tie. The shell includes a first shell 1 and a second shell 2, and the open end of the first shell 1 and the open end of the second shell 2 are detachably connected, specifically, the first shell 1 and the second shell 2 are detachably connected through a sealing thread. The first shell 1 and the second shell 2 can be disassembled and assembled by rotation, and the operation is simple. Specifically, the first shell 1 is provided with a male thread and the second shell 2 is provided with a female thread, or the first shell 1 is provided with a female thread and the second shell 2 is provided with a male thread, which is not limited in this embodiment.

[0020] The temperature measuring cable is connected to the first housing 1, and the specific connection structure is as follows:

[0021] like Figure 2 As shown, the closed end of the first housing 1 is provided with a first screw hole 4 adapted to the temperature measuring cable. Specifically, a threaded tube 5 adapted to the first screw hole 4 is sleeved on the outside of the temperature measuring cable. In order to improve the sealing and adaptability, a threaded tube 5 with a matching size is used to seal and connect with the first screw hole 4, further improving the sealing effect. The threaded tube 5 and the temperature measuring cable are sealed and fixedly connected, so that the temperature measuring cable and the first housing 1 are sealed.

[0022] The wire is connected to the second housing 2, and the specific connection structure is as follows:

[0023] One end of the terminal cover 3 passes through the closed end of the second shell 2, and the terminal cover 3 is sealed and connected to the second shell 2; the terminal cover 3 is provided with a through hole adapted to the wire, and the wire here is a compensation wire. The wire passes through the through hole, and the wire is sealed and fixed to the terminal cover 3. Further, a stud 7 is provided at one end of the terminal cover 3, and a second screw hole 6 adapted to the stud 7 is provided at the closed end of the second shell 2. The stud 7 is screwed into the second screw hole 6, thereby making the terminal cover 3 and the second shell 2 sealed. In addition, a nut 8 is provided at the other end of the terminal cover 3, and the stud 7 is provided with an adjusting nut 9 located outside the second shell 2. The stud 7 extends into the second shell 2 and is sealed by a thread, specifically, the stud 7 is screwed in by the nut 8, and the length of the screwing in depends on the specific situation. After screwing in, the current position can be locked by the external adjusting nut 9.

[0024] like Figure 3As shown, the inner diameter of the housing in this embodiment is 28-30 mm. The specific inner diameter size can be determined according to the actual situation, but the connector 10 must be smaller than the inner diameter of the housing and can be accommodated in the housing. The two connectors 10 are completely sealed in the housing and are not damaged by pulling, collision, etc., and have good mechanical properties. The housing itself has the characteristics of corrosion resistance, heat resistance, and high low-temperature strength.

[0025] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. These modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the utility model, and they should all be included in the scope of the claims and specification of the utility model.

Claims

1. A junction box, characterized in that: It comprises a stainless steel shell and a terminal cover; the shell comprises a first shell and a second shell, the open end of the first shell and the open end of the second shell are detachably sealed and connected via threads, and the closed end of the first shell is provided with a first screw hole adapted to the temperature measuring cable; one end of the terminal cover passes through the closed end of the second shell, and the terminal cover and the second shell are sealed and connected; the terminal cover is provided with a through hole adapted to the electric wire.

2. A junction box according to claim 1, characterized in that: The first shell is provided with a male thread and the second shell is provided with a female thread, or the first shell is provided with a female thread and the second shell is provided with a male thread.

3. A junction box according to claim 1, characterized in that: A stud is provided at one end of the terminal cover, and a second screw hole adapted to the stud is provided at the closed end of the second shell. The stud is screwed into the second screw hole, thereby sealing the terminal cover and the second shell.

4. A junction box according to claim 3, characterized in that: The other end of the terminal cover is provided with a nut.

5. A junction box according to claim 3, characterized in that: The stud is provided with an adjustment nut located outside the second housing.

6. A junction box according to claim 1, characterized in that: The shell is cylindrical in shape.

7. A junction box according to claim 1, characterized in that: The inner diameter of the shell is 28-30 mm.

8. The junction box according to claim 1, characterized in that: The outside of the temperature measuring cable is provided with a threaded tube adapted to the first screw hole.

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