Temporary electricity utilization explosion-proof distribution box for repair operation of oil pipeline

Abstract

The utility model relates to a temporary electricity utilization explosion-proof distribution box for repair operation of an oil pipeline. The temporary electricity utilization explosion-proof distribution box comprises a portable trolley and a distribution box arranged on the portable trolley, the distribution box comprises an explosion-proof shell, and a three-phase five-wire system bus, a wire inlet circuit breaker, a wire outlet circuit breaker and an electric leakage testing device are arranged in the explosion-proof shell. The portable trolley is used for carrying the distribution box, the distribution box can be conveniently and easily transported to a field operation area, and the problems that the distribution box is large in weight, difficult to install and fix, low in emergency rescue operation flexibility and difficult to install and fix are solved; meanwhile, the distribution box is wired according to a TN-S mode, so that the requirement of one machine, one brake and one protection is met; besides, an electric leakage testing device is arranged in the explosion-proof shell, and corresponding testing resistance is added outside the circuit breaker according to the magnitude of electric leakage action current, so that the standard requirement for testing the circuit breaker before daily use can be met, and the safety of an oil pipeline emergency operation explosion-proof place is guaranteed.

Description

Technical Field

[0001] The utility model relates to the field of power distribution, in particular to a temporary power explosion-proof distribution box used for emergency repair of oil pipelines. Background Art

[0002] Temporary electricity is the power guarantee for oil pipeline rescue operations and the basic guarantee for the normal operation of power equipment. As the most critical link in temporary electricity use, the distribution box is prone to non-compliance with regulatory requirements if it is improperly configured, which will bring new risks to rescue operations and even cause accidents. Oil pipeline rescue operations are special operations in flammable and explosive dangerous places. The equipment and facilities required for rescue operations must meet explosion-proof requirements. At present, there are no requirements for temporary electricity distribution boxes in explosion-proof places for oil pipeline rescue operations in temporary electricity use specifications. In addition, oil pipeline rescue operations are generally carried out in harsh outdoor working environments and are time-sensitive. It is difficult to carry, install and fix the distribution box, which makes field operations difficult. Utility Model Content

[0003] The utility model provides a temporary power explosion-proof distribution box used for emergency repair of oil pipelines to solve at least one of the above technical problems.

[0004] The utility model solves the above-mentioned technical problems with the following technical solutions: a temporary explosion-proof distribution box for oil pipeline emergency repair work, comprising a portable trolley and a distribution box arranged on the portable trolley; the distribution box comprises a flameproof casing, in which a 380V three-phase five-wire busbar, an incoming line circuit breaker, an outgoing line circuit breaker and a leakage test device are arranged, and an incoming line plug, an outgoing line plug, an incoming line switch and an outgoing line switch are inlaid on the flameproof casing; the incoming line plug is provided with a three-phase line plug interface, a neutral line plug interface and a protective earthing line plug interface, the incoming line circuit breaker is specifically a three-way circuit breaker, the three-phase line plug interface of the incoming line plug is correspondingly connected to the three-phase line incoming line end of the incoming line circuit breaker, the three-phase line outgoing line end of the incoming line circuit breaker is correspondingly connected to the three-phase line of the three-phase five-wire busbar, the neutral line plug interface of the incoming line plug and the protective earthing line plug interface are respectively provided. The grounding wire plug interface is correspondingly connected to the neutral wire and the protective grounding wire of the three-phase five-wire busbar; the outlet plug is provided with a phase wire plug interface, a neutral wire plug interface and a protective grounding wire plug interface, the phase wire plug interface and the neutral wire plug interface of the outlet plug are correspondingly connected to the phase wire outlet terminal and the neutral wire outlet terminal of the outlet circuit breaker, the phase wire inlet terminal and the neutral wire inlet terminal of the outlet circuit breaker are correspondingly connected to the phase wire and the neutral wire of the three-phase five-wire busbar, and the protective grounding wire plug interface of the outlet plug is connected to the protective grounding wire of the three-phase five-wire busbar; the incoming switch is linked to the operating mechanism of the incoming circuit breaker, and the outgoing switch is linked to the operating mechanism of the outgoing circuit breaker; one end of the leakage test device is connected to the phase wire inlet terminal of the outgoing circuit breaker, and the other end of the leakage test device is connected to the neutral wire outlet terminal of the outgoing circuit breaker.

[0005] On the basis of the above technical solution, the present invention can also be improved as follows.

[0006] Furthermore, the outgoing line plugs and the outgoing line circuit breakers are provided in multiple numbers and correspond one to one; the outgoing line switches are provided in multiple numbers and correspond one to one to the outgoing line circuit breakers.

[0007] Furthermore, the phase line plug interface of at least one of the outlet plugs is specifically a three-phase line plug interface, and the outlet circuit breaker is specifically a four-way circuit breaker; the three-phase line plug interface and the neutral line plug interface of at least one of the outlet plugs are correspondingly connected to the three-phase line outlet terminal and the neutral line outlet terminal of the outlet circuit breaker, and the three-phase line input terminal and the neutral line input terminal of the outlet circuit breaker are correspondingly connected to the three-phase line and the neutral line of the three-phase five-wire busbar.

[0008] Furthermore, the phase line plug interface of at least one of the outlet plugs is specifically a single-phase line plug interface, and the outlet circuit breaker is specifically a two-way circuit breaker; the single-phase line plug interface and the neutral line plug interface of at least one of the outlet plugs are correspondingly connected to the single-phase line outlet terminal and the neutral line outlet terminal of the outlet circuit breaker, and the single-phase line input terminal and the neutral line input terminal of the outlet circuit breaker are correspondingly connected to any phase line and neutral line of the three-phase five-wire busbar.

[0009] Furthermore, the leakage test device includes a leakage test resistor and a leakage test button, the leakage test button is embedded in the flameproof casing, one end of the leakage test button is connected to the phase line input terminal of the outgoing circuit breaker, and the other end of the leakage test button is connected to the center line output terminal of the outgoing circuit breaker through the leakage test resistor.

[0010] Further, the leakage test resistor is specifically a potentiometer, or the leakage test resistor is composed of two 3.3 kilo-ohm resistors connected in series.

[0011] Furthermore, the flameproof housing is also inlaid with indicator lights, which include an incoming line power indicator light, an incoming line closing indicator light and a loop closing indicator light; one end of the incoming line power indicator light is connected to any phase line incoming terminal of the incoming circuit breaker, and the other end of the incoming line power indicator light is connected to the neutral line incoming terminal of the incoming circuit breaker; one end of the incoming line closing indicator light is connected to any phase line outgoing terminal of the incoming circuit breaker, and the other end of the incoming line closing indicator light is connected to the neutral line outgoing terminal of the incoming circuit breaker; one end of the loop closing indicator light is connected to the phase line outgoing terminal of the outgoing circuit breaker, and the other end of the loop closing indicator light is connected to the neutral line outgoing terminal of the outgoing circuit breaker.

[0012] Furthermore, the distribution box also includes an increased safety housing which is arranged at the bottom of the flameproof housing and is in a separate structure from the flameproof housing. An increased safety distribution circuit is arranged in the increased safety housing. A main switch and a loop switch are embedded in the increased safety housing, and the main switch and the loop switch are respectively connected to the increased safety distribution circuit.

[0013] Furthermore, a rain cover is provided on the top of the flameproof housing.

[0014] Furthermore, the flameproof housing is made of aluminum alloy material.

[0015] The beneficial effects of the utility model are as follows: the utility model is a temporary explosion-proof distribution box for oil pipeline emergency repair operations. The distribution box is carried by a portable trolley, so the distribution box can be conveniently and easily transported to the field operation area, which solves the problems of heavy weight, difficult installation and fixation of the distribution box, low flexibility in emergency operations and difficult installation and fixation; at the same time, the distribution box is wired in accordance with the TN-S method to meet the "one machine, one switch and one protection" requirement; in addition, a leakage test device is arranged in the flameproof casing, and according to the leakage protection principle, a corresponding test resistor is added outside the circuit breaker according to the leakage action current thereof, which can meet the regulatory requirements to test the circuit breaker before use every day, so as to ensure the safety of explosion-proof sites for oil pipeline emergency repair operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the external structure of a temporary explosion-proof power distribution box used for emergency repair of oil pipelines in the utility model;

[0017] Figure 2 The utility model discloses a circuit structure principle diagram in a flameproof housing of a temporary power explosion-proof distribution box used for emergency repair of oil pipelines. DETAILED DESCRIPTION

[0018] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0019] like Figure 1 and Figure 2As shown, a temporary explosion-proof distribution box for oil pipeline emergency repair work includes a portable trolley 1 and a distribution box arranged on the portable trolley; the distribution box includes a flameproof housing 2, in which a 380V three-phase five-wire busbar 3, an incoming line circuit breaker 4, an outgoing line circuit breaker 5 and a leakage test device 6 are arranged, and an incoming line plug 7, an outgoing line plug 8, an incoming line switch 9 and an outgoing line switch 10 are embedded on the flameproof housing; the incoming line plug 7 is provided with The three-phase line plug interface, the neutral line plug interface and the protective grounding line plug interface (BLJ85-63 / 3P+N+PE type plug can be selected), the incoming line circuit breaker 4 is specifically a three-way circuit breaker (S203-C63 type circuit breaker can be selected), the three-phase line plug interface of the incoming line plug 7 is correspondingly connected to the three-phase line incoming end of the incoming line circuit breaker 4, and the three-phase line outlet end of the incoming line circuit breaker 4 is correspondingly connected to the three-phase line of the three-phase five-wire bus 3. The neutral line plug interface and the protective earthing line plug interface of the incoming line plug 7 are correspondingly connected to the neutral line and the protective earthing line of the three-phase five-wire busbar 3; the outgoing line plug 8 is provided with a phase line plug interface, a neutral line plug interface and a protective earthing line plug interface, and the phase line plug interface and the neutral line plug interface of the outgoing line plug 8 are correspondingly connected to the phase line outgoing line terminal and the neutral line outgoing line terminal of the outgoing line circuit breaker 5, and the phase line inlet terminal and the neutral line inlet terminal of the outgoing line circuit breaker 5 are correspondingly connected to the three-phase five-wire busbar 3. The protective earthing wire plug interface of the outlet plug 8 is connected to the protective earthing wire of the three-phase five-wire busbar 3; the incoming switch 9 is linked with the operating mechanism of the incoming circuit breaker 4, and the outgoing switch 10 is linked with the operating mechanism of the outgoing circuit breaker 5; one end of the leakage test device 6 is connected to the phase incoming terminal of the outgoing circuit breaker 5, and the other end of the leakage test device 6 is connected to the neutral outgoing terminal of the outgoing circuit breaker 5.

[0020] The utility model discloses a temporary explosion-proof power distribution box for oil pipeline emergency repair operation. The portable trolley 1 is used to carry the power distribution box, so the power distribution box can be conveniently and easily transported to the field operation area, thereby solving the problems of heavy weight of the power distribution box, difficulty in installation and fixation, low flexibility in emergency operation and difficulty in installation and fixation. Meanwhile, the power distribution box is wired in TN-S mode to meet the requirement of "one machine, one switch and one protection". In addition, a leakage test device is arranged in the flameproof housing. According to the leakage protection principle, a corresponding test resistance is added outside the circuit breaker according to the leakage action current, so as to meet the specification requirement of testing the circuit breaker before use every day and ensure the safety of the explosion-proof site for oil pipeline emergency repair operation.

[0021] In this specific embodiment, the outgoing line plugs 8 and the outgoing line circuit breakers 5 are both provided in multiple numbers and correspond one to one; the outgoing line switches 10 are provided in multiple numbers and correspond one to one to the outgoing line circuit breakers 5.

[0022] In this specific embodiment, the phase line plug interface of at least one of the outlet plugs 8 is specifically a three-phase line plug interface (a BLJ85-63 / 3P+N+PE model plug can be selected, and a BLJ85-32 / 3P+N+PE model plug can also be selected), and the outlet circuit breaker 5 is specifically a four-way circuit breaker (a S204-C63+VE30mA model circuit breaker can be selected); the three-phase line plug interface and the neutral line plug interface of at least one of the outlet plugs 8 are correspondingly connected to the three-phase line outlet terminal and the neutral line outlet terminal of the outlet circuit breaker 5, and the three-phase line inlet terminal and the neutral line inlet terminal of the outlet circuit breaker 5 are correspondingly connected to the three-phase line and the neutral line of the three-phase five-wire bus 3.

[0023] In this specific embodiment, the phase line plug interface of at least one of the outlet plugs 8 is specifically a single-phase line plug interface (a BLJ85-25 / 1P+N+PE model plug can be selected), and the outlet circuit breaker 5 is specifically a two-way circuit breaker (a S202-C16+VE30mA model circuit breaker can be selected); the single-phase line plug interface and the neutral line plug interface of at least one of the outlet plugs 8 are correspondingly connected to the single-phase line outlet terminal and the neutral line outlet terminal of the outlet circuit breaker 5, and the single-phase line inlet terminal and the neutral line inlet terminal of the outlet circuit breaker 5 are correspondingly connected to any phase line and neutral line of the three-phase five-wire bus 3.

[0024] Specifically, in this example, there are three outlet plugs 8, of which two phase line plug interfaces of the outlet plugs 8 are specifically three-phase line plug interfaces, and the phase line plug interface of the other outlet plug 8 is specifically a single-phase line plug interface. Correspondingly, there are also three outlet circuit breakers 5, of which two outlet circuit breakers 5 are four-way circuit breakers, and the other outlet circuit breaker 5 is a two-way circuit breaker.

[0025] The incoming and outgoing line plugs adopt two modes (optional): a special explosion-proof quick-install plug and a bottom cable inlet and outlet, which is convenient for incoming and outgoing line wiring. In this specific embodiment, the leakage test device 6 includes a leakage test resistor 61 and a leakage test button 62, and the leakage test button 62 is embedded in the flameproof housing 2, one end of the leakage test button 62 is connected to the phase line incoming terminal of the outgoing circuit breaker 5, and the other end of the leakage test button 62 is connected to the center line outgoing terminal of the outgoing circuit breaker 5 through the leakage test resistor 61.

[0026] Specifically, in this example, three leakage test devices 6 are provided, corresponding one to one with the three outgoing circuit breakers 5. In the present utility model, one electrical device corresponds to one outgoing plug 8, one outgoing plug 8 corresponds to one outgoing circuit breaker 5, and one outgoing circuit breaker 5 corresponds to one leakage test device 6; therefore, the present utility model meets the requirement of "one machine, one switch, one protection".

[0027] In this specific embodiment, the leakage test resistor 61 is specifically a potentiometer, or the leakage test resistor 61 is composed of two 3.3 kilo-ohm resistors connected in series.

[0028] Specifically, the leakage test resistor 61 can be composed of two 3.3 kilo-ohm resistors connected in series; if there are three outgoing circuit breakers 5, the resistors in the three leakage test devices 6 can be integrated on a resistor board, with two 1 / 4W 303 kilo-ohm resistors connected in series, for a total of three groups. The three leakage test devices 6 can perform a 30mA leakage current test.

[0029] In this specific embodiment, the flameproof housing 2 is also inlaid with indicator lights, which include an incoming power indicator light 11, an incoming power closing indicator light 12 and a loop closing indicator light 13; one end of the incoming power indicator light 11 is connected to any phase incoming terminal of the incoming circuit breaker 4, and the other end of the incoming power indicator light 11 is connected to the neutral incoming terminal of the incoming circuit breaker 4; one end of the incoming closing indicator light 12 is connected to any phase outgoing terminal of the incoming circuit breaker 4, and the other end of the incoming closing indicator light 12 is connected to the neutral outgoing terminal of the incoming circuit breaker 4; one end of the loop closing indicator light 13 is connected to the phase outgoing terminal of the outgoing circuit breaker 5, and the other end of the loop closing indicator light 13 is connected to the neutral outgoing terminal of the outgoing circuit breaker 5.

[0030] The indicator light of the utility model can highlight whether the incoming line has electricity, whether the incoming line circuit breaker is closed, and whether the circuit has electricity.

[0031] The electrical switch circuits of the temporary power explosion-proof distribution box of the utility model are all encapsulated inside the flameproof housing 2, and the switch operation and status indications are displayed on the surface of the flameproof housing 2. All indicator lights are explosion-proof indicator lights; all switches and buttons meet the explosion-proof requirements.

[0032] In this specific embodiment, the distribution box also includes an increased safety housing 14 which is arranged at the bottom 2 of the flameproof housing and is in a separate structure from the flameproof housing 2. An increased safety distribution circuit is arranged in the increased safety housing 14. A main switch 15 and a loop switch 16 are embedded in the increased safety housing, and the main switch 15 and the loop switch 16 are respectively connected to the increased safety distribution circuit.

[0033] The flameproof housing bottom 2 and the increased safety housing 14 are in an upper and lower split structure, which is convenient for daily operation, inspection and maintenance.

[0034] In this specific embodiment, a rain cover 17 is provided on the top of the flameproof housing 2 .

[0035] The rain cover 17 can reduce the risk of damage to the temporary explosion-proof distribution box due to rain during outdoor rescue operations on oil pipelines.

[0036] In this specific embodiment, the flameproof housing 2 is made of aluminum alloy material.

[0037] The explosion-proof grade of the temporary power explosion-proof distribution box of the utility model is Exde II CT4Gb, which meets the explosion-proof requirements.

[0038] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A temporary explosion-proof power distribution box for oil pipeline emergency repair work, characterized by: It comprises a portable trolley and a distribution box arranged on the portable trolley; the distribution box comprises a flameproof casing, in which a 380V three-phase five-wire busbar, an incoming line circuit breaker, an outgoing line circuit breaker and a leakage test device are arranged; the flameproof casing is inlaid with an incoming line plug, an outgoing line plug, an incoming line switch and an outgoing line switch; the incoming line plug is provided with a three-phase line plug interface, a neutral line plug interface and a protective earthing line plug interface; the incoming line circuit breaker is specifically a three-way circuit breaker, the three-phase line plug interface of the incoming line plug is correspondingly connected to the three-phase incoming line terminal of the incoming line circuit breaker, the three-phase outgoing line terminal of the incoming line circuit breaker is correspondingly connected to the three-phase line of the three-phase five-wire busbar, the neutral line plug interface and the protective earthing line plug interface of the incoming line plug are correspondingly connected to the neutral line plug interface of the three-phase five-wire busbar The outlet plug is provided with a phase line plug interface, a neutral line plug interface and a protective earth line plug interface, the phase line plug interface and the neutral line plug interface of the outlet plug are correspondingly connected to the phase line outlet terminal and the neutral line outlet terminal of the outlet circuit breaker, the phase line inlet terminal and the neutral line inlet terminal of the outlet circuit breaker are correspondingly connected to the phase line and the neutral line of the three-phase five-wire busbar, and the protective earth line plug interface of the outlet plug is connected to the protective earth line of the three-phase five-wire busbar; the incoming switch is linked to the operating mechanism of the incoming circuit breaker, and the outgoing switch is linked to the operating mechanism of the outgoing circuit breaker; one end of the leakage test device is connected to the phase line inlet terminal of the outgoing circuit breaker, and the other end of the leakage test device is connected to the neutral line outlet terminal of the outgoing circuit breaker.

2. The temporary explosion-proof power distribution box for oil pipeline emergency repair according to claim 1 is characterized by: The outlet plugs and the outlet circuit breakers are both provided in multiple numbers and correspond one to one; the outlet switches are provided in multiple numbers and correspond one to one with the outlet circuit breakers.

3. The explosion-proof distribution box for temporary power supply used for emergency repair of oil pipeline according to claim 2 is characterized by: The phase line plug interface of at least one of the outlet plugs is specifically a three-phase line plug interface, and the outlet circuit breaker is specifically a four-way circuit breaker; the three-phase line plug interface and the neutral line plug interface of at least one of the outlet plugs are correspondingly connected to the three-phase line outlet terminal and the neutral line outlet terminal of the outlet circuit breaker, and the three-phase line inlet terminal and the neutral line inlet terminal of the outlet circuit breaker are correspondingly connected to the three-phase line and the neutral line of the three-phase five-wire busbar.

4. The temporary explosion-proof power distribution box for oil pipeline emergency repair according to claim 2 is characterized by: The phase line plug interface of at least one of the outlet plugs is specifically a single-phase line plug interface, and the outlet circuit breaker is specifically a two-way circuit breaker; the single-phase line plug interface and the neutral line plug interface of at least one of the outlet plugs are correspondingly connected to the single-phase line outlet terminal and the neutral line outlet terminal of the outlet circuit breaker, and the single-phase line inlet terminal and the neutral line inlet terminal of the outlet circuit breaker are correspondingly connected to any phase line and neutral line of the three-phase five-wire busbar.

5. The temporary explosion-proof power distribution box for oil pipeline emergency repair according to claim 1 is characterized by: The leakage test device includes a leakage test resistor and a leakage test button. The leakage test button is embedded in the flameproof casing. One end of the leakage test button is connected to the phase line input terminal of the outgoing circuit breaker, and the other end of the leakage test button is connected to the center line output terminal of the outgoing circuit breaker through the leakage test resistor.

6. The explosion-proof distribution box for temporary power supply used for emergency repair of oil pipeline according to claim 5 is characterized by: The leakage test resistor is specifically a potentiometer, or the leakage test resistor is composed of two 3.3 kilo-ohm resistors connected in series.

7. The explosion-proof distribution box for temporary power supply used for emergency repair of oil pipeline according to claim 1 is characterized by: The flameproof housing is also inlaid with indicator lights, which include an incoming power indicator light, an incoming power closing indicator light and a loop closing indicator light; one end of the incoming power indicator light is connected to any phase incoming terminal of the incoming circuit breaker, and the other end of the incoming power indicator light is connected to the neutral incoming terminal of the incoming circuit breaker; one end of the incoming closing indicator light is connected to any phase outgoing terminal of the incoming circuit breaker, and the other end of the incoming closing indicator light is connected to the neutral outgoing terminal of the incoming circuit breaker; one end of the loop closing indicator light is connected to the phase outgoing terminal of the outgoing circuit breaker, and the other end of the loop closing indicator light is connected to the neutral outgoing terminal of the outgoing circuit breaker.

8. The explosion-proof distribution box for temporary power supply used for emergency repair of oil pipeline according to claim 1 is characterized by: The distribution box also includes an increased safety housing which is arranged at the bottom of the flameproof housing and is in a separate structure from the flameproof housing. An increased safety distribution circuit is arranged in the increased safety housing. A main switch and a loop switch are embedded in the increased safety housing, and the main switch and the loop switch are respectively connected to the increased safety distribution circuit.

9. The explosion-proof distribution box for temporary power supply used for emergency repair of oil pipeline according to claim 1 is characterized by: A rain cover is arranged on the top of the flameproof housing.

10. The explosion-proof distribution box for temporary power supply used for emergency repair of oil pipeline according to claim 1 is characterized by: The flameproof housing is made of aluminum alloy material.

Images