CN215813044U - Cable one-end current drainage cabinet detection device - Google Patents

Abstract

The utility model provides a detection device of a drainage cabinet for cable finished ends, which comprises a drainage cabinet, a cable finished end box arranged in the drainage cabinet, a grounding copper bar, a cable to be detected, a temperature sensing element, a thermosensitive element and an upper computer, wherein the cable finished end box is arranged in the drainage cabinet; the cable forming end box is fixed on the grounding copper bar; the temperature sensing element is attached to the outside of the cable to be detected; the desensitizing element is attached to the outside of the cable to be detected; and the temperature sensing element and the thermosensitive element are respectively connected with the upper computer. The reliability of the electric connection between the cable metal sheath and the grounding terminal is represented by the resistance value between the testing terminal and the grounding terminal of the cable terminating box, the grounding resistance value of each cable is measured uninterruptedly, the upper computer tracks the grounding resistance value of each cable respectively, and an alarm is given in time when the resistance value is obviously abnormal. The composite detection combination of temperature and co is adopted, and a thermosensitive wire is adopted as a mechanical backup scheme after other detection equipment fails, so that the timeliness and the reliability of fire detection are high.

Description

Cable one-end current drainage cabinet detection device

Technical Field

The utility model belongs to the technical field of rail transit cable detection, and particularly relates to a detection device for a drainage cabinet at a cable forming end.

Background

The cable is widely used as an indoor and outdoor power supply and an information transmission channel in the field of rail transit. As the cables are laid from outdoors all the way to indoors, there is a problem of lightning protection. The existing solution is to use a cable terminating box, to ground the metal sheath of the cable before it enters the machine room, and to protect the stripped cable. In order to facilitate the finding of cable faults, the operation site is clean and tidy, and the possibility is provided for the use of the drainage cabinet. The cable terminating drainage cabinet (hereinafter referred to as "drainage cabinet") is mainly used in the field of rail transit, before a cable enters a mechanical room from the outside, a cable room is generally arranged for installing the drainage cabinet, a cable terminating process is carried out in the drainage cabinet, and a metal sheath of the cable is grounded through a grounding copper bar arranged in the drainage cabinet, so that the lightning protection effect is achieved. The current drainage cabinet adopts a cabinet frame structure, a cable enters the cabinet body from the upper part or the lower part of the drainage cabinet and exits from the cabinet body from the other side, and a clamping component is provided in the cabinet body to fix the cable. In the middle part of the cable in the vertical direction, the end forming process is carried out, the metal sheath of the cable is connected to the grounding terminal of the cable end forming box, the grounding terminals of all the cable end forming boxes are connected to the grounding copper bar in the cabinet, and the grounding copper bar is connected to the grounding bus bar in the cabinet and then connected to the grounding network.

Because the cable termination process belongs to a special process, whether the cable metal sheath is reliably connected with the grounding terminal or not can not be mastered in real time in the using process, a blind spot of daily inspection is caused, and potential safety hazards exist. The drainage cabinet has the over-fire accident in use, the loss caused by the over-fire accident is serious, and the current drainage cabinet lacks the fire-fighting parameter sensing capability and the fire-fighting measures after fire accident, so that the fire hazard can not be effectively prevented.

Disclosure of Invention

In order to solve the technical problems, the utility model provides a cable end-to-end drainage cabinet detection device, which is used for continuously measuring the grounding resistance value of each cable, tracking the grounding resistance value of each cable by an upper computer respectively, and giving an alarm in time when the resistance value is obviously abnormal.

In order to achieve the purpose, the utility model adopts the following technical scheme:

a detection device of a current drainage cabinet for cable finished ends comprises a current drainage cabinet, a cable finished end box arranged in the current drainage cabinet, a grounding copper bar, a cable to be detected, a temperature sensing element, a thermosensitive element and an upper computer;

the cable forming end box is fixed on the grounding copper bar; the cable to be detected penetrates through the cable terminating box;

the temperature sensing element is attached to the outside of the cable to be detected; the thermosensitive element is attached to the outer part of the cable to be detected; and the temperature sensing element and the thermosensitive element are respectively connected with the upper computer.

Further, the temperature sensing element is a temperature sensing cable.

Further, the thermosensitive element adopts a thermosensitive wire.

Further, the detection device also comprises a fire extinguishing device;

the heat-sensitive wire is connected with the fire extinguishing equipment through a cable.

Further, the fire extinguishing equipment adopts aerosol.

Further, the detection device also comprises a harmful gas detection alarm module;

and the harmful gas detection alarm module is connected with the upper computer.

Further, the harmful gas detection alarm module is arranged at the top in the drainage cabinet.

Further, the harmful gas detection alarm module adopts a carbon monoxide detector.

The effect provided in the summary of the utility model is only the effect of the embodiment, not all the effects of the utility model, and one of the above technical solutions has the following advantages or beneficial effects:

the utility model provides a detection device of a drainage cabinet for cable finished ends, which comprises a drainage cabinet, a cable finished end box arranged in the drainage cabinet, a grounding copper bar, a cable to be detected, a temperature sensing element, a thermosensitive element and an upper computer, wherein the cable finished end box is arranged in the drainage cabinet; the cable forming end box is fixed on the grounding copper bar; the cable to be detected penetrates through the cable terminating box; the temperature sensing element is attached to the outside of the cable to be detected; the thermosensitive element is attached to the outside of the cable to be detected; and the temperature sensing element and the thermosensitive element are respectively connected with the upper computer. The reliability of the electric connection between the cable metal sheath and the grounding terminal is represented by the resistance value between the testing terminal and the grounding terminal of the cable terminating box, the grounding resistance value of each cable is measured uninterruptedly, the upper computer tracks the grounding resistance value of each cable respectively, and an alarm is given in time when the resistance value is obviously abnormal.

The utility model adopts the composite detection combination of temperature and carbon monoxide and adopts a mechanical backup scheme that a thermosensitive wire is used after other detection equipment fails, so that the timeliness and the reliability of fire detection are high.

The temperature sensing device adopts a temperature sensing cable and a temperature sensing wire mode and is installed in a mode of being attached to the outer sheath of the cable, so that the timeliness of temperature sensing when a fire occurs is improved to the maximum extent.

The aerosol selected by the utility model has good volatility and insulating property, can extinguish fire and does not cause serious influence on electrical equipment.

Drawings

Fig. 1 is a schematic connection diagram of a cable terminating drainage cabinet detection device according to embodiment 1 of the present invention;

1-an aerosol; 2-an upper computer; 3-carbon monoxide detector; 4-the cable to be detected; 5-a thermo-sensitive element; 6-a temperature-sensitive element; 7-cable terminating box; 8-a grounding copper bar; 9-drainage cabinet.

Detailed Description

In order to clearly explain the technical features of the present invention, the following detailed description of the present invention is provided with reference to the accompanying drawings. The following disclosure provides many different embodiments, or examples, for implementing different features of the utility model. To simplify the disclosure of the present invention, the components and arrangements of specific examples are described below. Furthermore, the present invention may repeat reference numerals and/or letters in the various examples. This repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. It should be noted that the components illustrated in the figures are not necessarily drawn to scale. Descriptions of well-known components and processing techniques and procedures are omitted so as to not unnecessarily limit the utility model.

Example 1

The embodiment 1 of the utility model provides a cable terminating drainage cabinet detection device, which is characterized in that the reliability of electric connection between a cable metal sheath and a grounding terminal is represented by a resistance value between a test terminal and the grounding terminal of a cable terminating box, the grounding resistance value of each cable is measured uninterruptedly, an upper computer tracks the grounding resistance value of each cable respectively, and an alarm is given in time when the resistance value is obviously abnormal.

Fig. 1 is a schematic connection diagram of a cable terminating drainage cabinet detection device according to embodiment 1 of the present invention; the device comprises a drainage cabinet 9, a cable termination box 7, a grounding copper bar 8, a cable to be detected 4, a temperature sensing element 6, a temperature sensing element 5 and an upper computer 2, wherein the cable termination box 7, the grounding copper bar 8, the cable to be detected 4, the temperature sensing element 6 and the upper computer are arranged in the drainage cabinet;

the thermosensitive element 5 adopts a thermosensitive wire, and the thermosensitive element 6 adopts a thermosensitive cable.

The cable forming end box 7 is fixed on the grounding copper bar 8; the cable 4 to be detected penetrates through the cable terminating box 7; the temperature sensing element 6 is attached to the outside of the cable 4 to be detected; the thermosensitive element 5 is attached to the outside of the cable 4 to be detected; and the temperature sensing element 6 and the temperature sensing element 5 are respectively connected with the upper computer 2.

The temperature of each cable is detected by adopting a temperature sensing cable and a thermosensitive wire, the alarm temperature of the temperature sensing cable can be set between 70 ℃ and 180 ℃, the thermosensitive wire can realize temperature detection without depending on a power supply and give an action signal, and the thermosensitive wire is used as a backup temperature sensing device when the temperature sensing cable fails. The temperature sensing cable and the temperature sensing wire adopt an installation mode of attaching an outer cable protection sleeve, and the directness and the timeliness of temperature sensing are improved.

The detection device disclosed by the utility model further comprises a fire extinguishing device 1, wherein the fire extinguishing device adopts aerosol.

The temperature sensing cable is connected with the upper computer 2 and uploads the temperature alarm signal to the upper computer 2. The thermosensitive wire is directly connected with the aerosol 1 of the fire extinguishing equipment, and the fire extinguishing equipment adopts a hot aerosol mode, has good volatility and insulating property, and cannot influence the insulating property of the cable.

Meanwhile, in order to improve the detection reliability of the fire, a harmful gas detection alarm module is also arranged in the drainage cabinet; the harmful gas detection alarm module is arranged at the top of the drainage cabinet.

According to the utility model, the carbon monoxide detector 3 is adopted as the harmful gas detection alarm module, when all temperature sensing devices fail, the carbon monoxide concentration formed in the initial stage of fire is monitored, and an alarm signal is uploaded to the upper computer 2 to give an alarm in time.

The upper computer 2 carries out comprehensive processing to the alarm signal, gives an alarm in time, displays the alarm information, and the starting of the fire extinguishing measure can be set to an automatic mode or a manual mode.

Compared with the prior art, the utility model firstly provides a technical means of daily inspection for field maintenance personnel by monitoring the grounding resistor, and simultaneously ensures the safe operation of the drainage cabinet; secondly, the fire fighting parameters at the initial stage and the early stage of the fire are detected, the fire state is mastered in real time, the alarm is given in time, and the fire extinguishing measures are automatically started when necessary, so that the fire hazard is effectively prevented; finally, the hot aerosol selected by the utility model has good volatility and insulating property, and can not cause serious influence on electrical equipment.

Although the embodiments of the present invention have been described with reference to the accompanying drawings, the scope of the present invention is not limited thereto. Various modifications and alterations will occur to those skilled in the art based on the foregoing description. And are neither required nor exhaustive of all embodiments. On the basis of the technical scheme of the utility model, various modifications or changes which can be made by a person skilled in the art without creative efforts are still within the protection scope of the utility model.

Claims (8)

1. A detection device of a current drainage cabinet with an end-formed cable comprises a current drainage cabinet, and is characterized by further comprising a cable end-forming box, a grounding copper bar, a cable to be detected, a temperature sensing element, a thermosensitive element and an upper computer, wherein the cable end-forming box, the grounding copper bar, the cable to be detected, the thermosensitive element and the upper computer are arranged in the current drainage cabinet;

the cable forming end box is fixed on the grounding copper bar; the cable to be detected penetrates through the cable terminating box;

the temperature sensing element is attached to the outside of the cable to be detected; the thermosensitive element is attached to the outer portion of the cable to be detected, and the thermosensitive element are connected with the upper computer respectively.

2. The device as claimed in claim 1, wherein the temperature-sensing element is a temperature-sensing cable.

3. The cable terminating cabinet inspection device of claim 1, wherein the thermal element is a thermal wire.

4. A cable termination cabinet detection apparatus as claimed in claim 3, wherein the detection apparatus further comprises fire extinguishing equipment;

the heat-sensitive wire is connected with the fire extinguishing equipment through a cable.

5. A cable termination cabinet detection apparatus as claimed in claim 4, wherein the fire extinguishing apparatus employs an aerosol.

6. The cable terminating drainage cabinet detection device of any one of claims 1 to 5, wherein the detection device further comprises a harmful gas detection alarm module;

and the harmful gas detection alarm module is connected with the upper computer.

7. The device as claimed in claim 6, wherein the harmful gas detection alarm module is mounted on the top of the drainage cabinet.

8. The cable terminating drainage cabinet detection device of claim 7, wherein the harmful gas detection alarm module employs a carbon monoxide detector.

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