Safety auxiliary device for electrical overhaul of thermal power plant

Abstract

The invention discloses a thermal power plant electrical maintenance safety auxiliary device, and relates to the technical field of thermal power plant electrical maintenance safety, the thermal power plant electrical maintenance safety auxiliary device comprises an insulation insertion cylinder, an insulation insertion rod is inserted in the upper side of the insulation insertion cylinder, a support sheet is hinged to the upper part of the outer wall of the insulation insertion rod, and a current detector is fixedly connected to the upper side of the insulation insertion cylinder. The outer wall of the current detector is fixedly connected with a fixed block, the outer side of the fixed block is provided with a protection mechanism, the outer wall of the insulation insertion cylinder is provided with a switch mechanism, and the interior of the insulation insertion cylinder is provided with a moving mechanism. The oil contamination detection device has the advantages that oil contamination is prevented from interfering with detection precision, adhesion on the surface of a detection point can be broken, stability of a detection result is improved, practicability is high, and detection precision can be improved when the detection point is detected.

Description

Technical Field

[0001] The invention relates to the technical field of electrical maintenance safety in thermal power plants, in particular to an electrical maintenance safety auxiliary device for thermal power plants. Background Art

[0002] Due to the complex operating environment, electrical equipment in thermal power plants is often affected by factors such as high temperature, high humidity and oil pollution. Equipment leakage problems occur frequently, directly threatening equipment safety and operational stability.

[0003] In the process of checking leakage points, the traditional method is to use handheld detection instruments to detect point by point. However, due to the limitation of oil coverage and other problems, cleaning and other operations are required during the detection, which increases the workload and the degree of danger.

[0004] The existing Chinese patent with publication number: CN114062767A discloses an electric tester for repairing an electric safety system. The position between the positioning connection seat and the limiting slide rod of the device is limited by a fastening bolt, which can increase the stability and flexibility of the device when in use, but cannot solve the above problems and is still troublesome in actual use.

[0005] In addition, the detection tools are prone to accumulate oil and other attachments after use, which further affects the accuracy and efficiency of subsequent detection. Therefore, an electrical maintenance safety auxiliary device is needed that can stably detect, effectively remove interference and improve detection accuracy.

[0006] Therefore, it is necessary to design a thermal power plant electrical maintenance safety auxiliary device that is highly practical and can improve the detection accuracy when detecting detection points. Summary of the invention

[0007] The purpose of the present invention is to provide a safety auxiliary device for electrical maintenance of a thermal power plant to solve the problems raised in the above-mentioned background technology.

[0008] In order to solve the above technical problems, the present invention provides the following technical solutions: an electrical maintenance safety auxiliary device for a thermal power plant, comprising an insulating plug, an insulating plug rod is inserted into the upper side of the insulating plug, a support sheet is hinged on the upper part of the outer wall of the insulating plug rod, a current detector is fixedly connected to the upper side of the insulating plug, a fixed block is fixedly connected to the outer wall of the current detector, a protection mechanism is arranged on the outer side of the fixed block, a switch mechanism is arranged on the outer wall of the insulating plug, and a moving mechanism is arranged inside the insulating plug;

[0009] The side wall of the insulating insert is provided with a plurality of circular holes, and the inner wall of the insulating insert is provided with a sliding groove.

[0010] According to the above technical solution, the protection mechanism includes a detection probe, the lower end of the detection probe is hinged to the outer wall of the fixed block through a torsion spring, the lower side of the outer wall of the detection probe is fixedly connected to a spring, the upper side of the spring is fixedly connected to a gasket, the upper side of the gasket is fixedly connected to an electromagnetic coil, and the inner wall of the insulating rod is fixedly connected to an induction heating controller.

[0011] According to the above technical solution, the electromagnetic coil is electrically connected to the induction heating controller, and the detection probe is electrically connected to the current detector, the total height of the spring and the electromagnetic coil is greater than the height of the detection probe, and a groove is opened in the middle of the outer wall of the detection probe.

[0012] According to the above technical solution, the switch mechanism includes a fixed pile, the outer wall of the fixed pile is fixedly connected to the outer wall of the insulating plug, the outer wall of the fixed pile is slidably connected to a slider, the upper side of the outer wall of the slider is fixedly connected to a first conductor, the outer wall of the insulating plug is fixedly connected to a fixed plate located on the upper side of the fixed pile, the upper part of the outer wall of the fixed plate is fixedly connected to a second conductor, the lower part of the outer wall of the fixed plate is fixedly connected to a third conductor, and the outer wall of the third conductor is fixedly connected to a grounding wire.

[0013] According to the above technical solution, the first conductor can move in the up and down directions, and the second conductor and the third conductor are both located on the moving path of the first conductor. The side of the first conductor close to the insulating insert can contact the third conductor and the second conductor respectively during the movement. The second conductor is electrically connected to the power supply, and the first conductor is electrically connected to the induction heating controller.

[0014] According to the above technical solution, the moving mechanism includes a sliding pile, the outer wall of the sliding pile is slidably connected to the inner wall of the insulating plug, the side wall of the sliding pile is provided with a groove, the inner wall of the groove is fixedly connected to the second spring of the sliding pile, one end of the second spring of the sliding pile is fixedly connected to a clamping block, one side of the clamping block extends to the outside of the insulating plug through a circular hole provided on the insulating plug, the upper side of the sliding pile is fixedly connected to a motor, the lower side of the insulating plug rod is fixedly connected to an insert, the lower end of the insert is inserted into the upper side of the sliding pile, the outer wall of the output end of the motor is fixedly connected to a fixed cylinder, the outer wall of the fixed cylinder is fixedly connected to a first protrusion, and the inner wall of the insert is fixedly connected to a second protrusion.

[0015] According to the above technical solution, the second protrusion and the first protrusion are both hemispherical structures, and the first protrusion is rotatable, the second protrusion is located on the rotation path of the first protrusion, and the insertion tube cannot rotate relative to the sliding pile.

[0016] Compared with the prior art, the beneficial effects achieved by the present invention are as follows: the present invention is provided with a slidable card block and a second spring, which can be automatically locked by elastic force after the length of the detection device is adjusted, and is supported by a support sheet, so that it is easy to adjust to different lengths to adapt to the detection scene, and can stably detect;

[0017] By providing a moving mechanism, the oil stain on the surface of the detection probe can be cleaned by vibration during the detection process to avoid the oil stain interfering with the detection accuracy. At the same time, the adhesion on the surface of the detection point can be broken to improve the stability of the detection result.

[0018] By setting up a protection mechanism, the risk of tip discharge is effectively reduced during detection, detection errors caused by interference from strong electric and magnetic fields are avoided, and the safety of the device and personnel during the detection process is ensured, thereby improving detection accuracy;

[0019] By providing a protective mechanism and a moving mechanism, the attachments on the surface of the detection probe can be quickly removed after the detection is completed, ensuring that the probe can maintain good detection performance after long-term use, thereby improving the accuracy of subsequent detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0021] Figure 1 It is a three-dimensional structural schematic diagram of the present invention;

[0022] Figure 2 It is a schematic diagram of the structure of the insulating insert of the present invention;

[0023] Figure 3 It is a schematic diagram of the internal structure of the insulating plug of the present invention;

[0024] Figure 4 It is a schematic diagram of the insulating plug structure of the present invention;

[0025] Figure 5 It is a schematic diagram of the internal structure of the insulating plug rod of the present invention;

[0026] Figure 6 The present invention Figure 3 A is a schematic diagram of the enlarged structure of the middle part;

[0027] Figure 7 The present invention Figure 4 A schematic diagram of the enlarged structure of B;

[0028] In the figure: 1, insulating plug; 2, insulating plug rod; 3, supporting sheet; 4, current detector; 5, fixed block; 6, protection mechanism; 7, switch mechanism; 8, moving mechanism; 601, detection probe; 602, spring; 603, gasket; 604, electromagnetic coil; 605, induction heating controller; 701, fixed pile; 702, slider; 703, first conductor; 704, fixed plate; 705, second conductor; 706, third conductor; 707, grounding wire; 801, sliding pile; 802, second spring; 803, block; 804, motor; 805, fixed cylinder; 806, first protrusion; 807, plug cylinder; 808, second protrusion. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] See also Figure 1-7 The present invention provides a technical solution: an electrical maintenance safety auxiliary device for a thermal power plant, comprising an insulating plug 1, an insulating plug rod 2 is inserted into the upper side of the insulating plug 1, a support sheet 3 is hinged on the upper part of the outer wall of the insulating plug rod 2, a current detector 4 is fixedly connected to the upper side of the insulating plug 1, a fixed block 5 is fixedly connected to the outer wall of the current detector 4, a protection mechanism 6 is arranged on the outer side of the fixed block 5, a switch mechanism 7 is arranged on the outer wall of the insulating plug 1, and a moving mechanism 8 is arranged inside the insulating plug 1, a plurality of circular holes are opened on the side wall of the insulating plug 1, and a slide groove is opened on the inner wall of the insulating plug 1;

[0031] The moving mechanism 8 includes a sliding pile 801, the outer wall of the sliding pile 801 is slidably connected to the inner wall of the insulating plug 1, the side wall of the sliding pile 801 is provided with a groove, the inner wall of the groove is fixedly connected to the sliding pile second spring 802, one end of the sliding pile second spring 802 is fixedly connected to a clamping block 803, one side of the clamping block 803 extends to the outside of the insulating plug 1 through a circular hole provided on the insulating plug 1, the upper side of the sliding pile 801 is fixedly connected to a motor 804, and the lower side of the insulating plug 2 is fixedly connected to the plug 807 The lower end of the insert cylinder 807 is inserted into the upper inner side of the sliding pile 801, the outer wall of the output end of the motor 804 is fixedly connected with the fixed cylinder 805, the outer wall of the fixed cylinder 805 is fixedly connected with the first protrusion 806, the inner wall of the insert cylinder 807 is fixedly connected with the second protrusion 808, the second protrusion 808 and the first protrusion 806 are both hemispherical structures, and the first protrusion 806 is rotatable, the second protrusion 808 is located on the rotation path of the first protrusion 806, and the insert cylinder 807 cannot generate relative rotation with the sliding pile 801;

[0032] When in use, the support sheet 3 is rotated to form a bracket, and the insulating plug 1 is held to press the block 803 back into the inside of the sliding pile 801 to make the second spring 802 of the sliding pile contract and store energy. Then, after the insulating plug 1 and the insulating plug rod 2 are adjusted to the required length, the block 803 pops out of the circular hole through the elastic force of the second spring 802 of the sliding pile to limit the insulating plug 1 and the insulating plug rod 2. Then, the insulating plug 1 is held to send the current detector 4 to the object to be detected. During the detection process, the support sheet 3 can be supported by the side of the object to be detected, thereby facilitating stable detection.

[0033] During the inspection, in order to prevent the surface of the object to be inspected from being covered with oil, the motor 804 can be connected to the power supply and started, so that the motor 804 drives the fixed cylinder 805 and the first protrusion 806 to rotate, and then the first protrusion 806 continuously pushes the second protrusion 808 upward during the rotation, so that the second protrusion 808 drives the inserting cylinder 807 and the insulating inserting rod 2 to vibrate slightly, so that the oil on the surface of the inspection point is broken by the continuous impact, so that the inspection is more accurate;

[0034] The protection mechanism 6 includes a detection probe 601, the lower end of the detection probe 601 is hinged to the outer wall of the fixed block 5 through a torsion spring, a spring 602 is fixedly connected to the lower side of the outer wall of the detection probe 601, a gasket 603 is fixedly connected to the upper side of the spring 602, an electromagnetic coil 604 is fixedly connected to the upper side of the gasket 603, an induction heating controller 605 is fixedly connected to the inner wall of the insulating plug 2, the electromagnetic coil 604 is electrically connected to the induction heating controller 605, and the detection probe 601 is electrically connected to the current detector 4, the total height of the spring 602 and the electromagnetic coil 604 is greater than the height of the detection probe 601, and a groove is provided in the middle of the outer wall of the detection probe 601;

[0035] During the detection, the detection probe 601 is electrically connected to the current detector 4, so that the detection probe 601 serves as the detection probe of the current detector 4. During the detection process, the detection probe 601 is driven by the insulating plug 2 to continuously impact the surface of the detection point, and the attachments on the surface of the detection point can be removed by impact, thereby making the electromagnetic coil 604 more closely contact with the detection point;

[0036] After the detection is completed, the induction heating controller 605 can be connected to the power supply to start the induction heating controller 605 and the electromagnetic coil 604 so that the electromagnetic coil 604 can quickly heat the surface of the detection probe 601, and then the motor 804 is started to drive the detection probe 601 to vibrate, so that the detection probe 601 reciprocates inside the electromagnetic coil 604 due to the elastic support of the spring 602 and the action of inertia during the vibration process, so that the surface is quickly and evenly heated, and then the electromagnetic coil 604 and the induction heating controller 605 are turned off, so that the detection probe 601 is quickly cooled while vibrating, and an oxide layer is quickly formed on its surface and falls off with the vibration, so that oil stains and other adhesions on its surface are quickly removed, thereby ensuring the accuracy of subsequent detection;

[0037] The switch mechanism 7 includes a fixed pile 701, the outer wall of the fixed pile 701 is fixedly connected to the outer wall of the insulating plug 1, the outer wall of the fixed pile 701 is slidably connected to a slider 702, the upper side of the outer wall of the slider 702 is fixedly connected to a first conductor 703, the outer wall of the insulating plug 1 is located on the upper side of the fixed pile 701 and is fixedly connected to a fixed plate 704, the upper part of the outer wall of the fixed plate 704 is fixedly connected to a second conductor 705, the lower part of the outer wall of the fixed plate 704 is fixedly connected to a third conductor 706, the outer wall of the third conductor 706 is fixedly connected to a grounding wire 707, the first conductor 703 can move in the up and down directions, and the second conductor 705 and the third conductor 706 are both located on the moving path of the first conductor 703, the side of the first conductor 703 close to the insulating plug 1 can contact the third conductor 706 and the second conductor 705 respectively during the movement, the second conductor 705 is electrically connected to the power supply, and the first conductor 703 is electrically connected to the induction heating controller 605;

[0038] After the detection process is completed, the slider 702 is pushed upward. Since one electrode of the motor 804 is connected to the power supply and the other electrode is connected to the first conductor 703, after the first conductor 703 contacts the second conductor 705, since the second conductor 705 is electrically connected to the other electrode of the power supply, a path is formed, so that the first conductor 703 contacts the second conductor 705, and then the induction heating controller 605 is powered. During the detection process, the slider 702 can be slid downward to contact the first conductor 703 with the third conductor 706, so that the induction heating controller 605 is powered off, and one end electrode of the induction heating controller 605 is grounded through the third conductor 706 and the grounding wire 707, and the electromagnetic coil 604 is in a cooling state, so that when the detection probe 601 and the electromagnetic coil 604 are close to the object to be detected, due to the detection probe 6 01 is located inside the electromagnetic coil 604, so that the electromagnetic coil 604 forms a protection on the outside of the detection probe 601, so that when the detection probe 601 is located in the protection range of the electromagnetic coil 604, the external electric field strength is partially weakened by the electromagnetic coil 604. Therefore, the electric field strength at the upper end of the detection probe 601 is relatively low, and the risk of tip discharge is relatively reduced, thereby reducing the effect of the electric and magnetic fields of the object to be detected on it, thereby avoiding damage to the current detector 4 caused by the tip discharge that may be generated when it is about to contact, thereby ensuring the detection accuracy, and after the electromagnetic coil 604 contacts the detection object, it can be grounded through the grounding wire 707. When the detection personnel pushes the insulating plug 1, the electromagnetic coil 604 moves downward relative to the detection probe 601, causing the spring 602 to contract, and then the detection probe 601 contacts the detection point.

[0039] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0040] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A safety auxiliary device for electrical maintenance of a thermal power plant, comprising an insulating plug (1), characterized in that: An insulating plug rod (2) is inserted into the upper side of the insulating plug tube (1), a support plate (3) is hingedly connected to the upper part of the outer wall of the insulating plug rod (2), a current detector (4) is fixedly connected to the upper side of the insulating plug tube (1), a fixed block (5) is fixedly connected to the outer wall of the current detector (4), a protective mechanism (6) is arranged on the outer side of the fixed block (5), a switch mechanism (7) is arranged on the outer wall of the insulating plug tube (1), and a moving mechanism (8) is arranged inside the insulating plug tube (1); The side wall of the insulating insert (1) is provided with a plurality of circular holes, and the inner wall of the insulating insert (1) is provided with a sliding groove.

2. The electrical maintenance safety auxiliary device for a thermal power plant according to claim 1, characterized in that: The protection mechanism (6) comprises a detection probe (601), the lower end of the detection probe (601) is hinged to the outer wall of the fixed block (5) via a torsion spring, a spring (602) is fixedly connected to the lower side of the outer wall of the detection probe (601), a gasket (603) is fixedly connected to the upper side of the spring (602), an electromagnetic coil (604) is fixedly connected to the upper side of the gasket (603), and an induction heating controller (605) is fixedly connected to the inner wall of the insulating plug (2).

3. The electrical maintenance safety auxiliary device for a thermal power plant according to claim 2, characterized in that: The electromagnetic coil (604) is electrically connected to the induction heating controller (605), and the detection probe (601) is electrically connected to the current detector (4). The total height of the spring (602) and the electromagnetic coil (604) is greater than the height of the detection probe (601), and a groove is provided in the middle of the outer wall of the detection probe (601).

4. The electrical maintenance safety auxiliary device for a thermal power plant according to claim 3, characterized in that: The switch mechanism (7) comprises a fixing pile (701), the outer wall of the fixing pile (701) is fixedly connected to the outer wall of the insulating plug (1), the outer wall of the fixing pile (701) is slidably connected to a slider (702), the upper side of the outer wall of the slider (702) is fixedly connected to a first conductor (703), the outer wall of the insulating plug (1) is fixedly connected to a fixing plate (704) located on the upper side of the fixing pile (701), the upper part of the outer wall of the fixing plate (704) is fixedly connected to a second conductor (705), the lower part of the outer wall of the fixing plate (704) is fixedly connected to a third conductor (706), and the outer wall of the third conductor (706) is fixedly connected to a grounding wire (707).

5. The electrical maintenance safety auxiliary device for a thermal power plant according to claim 4, characterized in that: The first conductor (703) can move in the up and down directions, and the second conductor (705) and the third conductor (706) are both located on the moving path of the first conductor (703); the side of the first conductor (703) close to the insulating plug (1) can respectively come into contact with the third conductor (706) and the second conductor (705) during the movement; the second conductor (705) is electrically connected to a power source, and the first conductor (703) is electrically connected to an induction heating controller (605).

6. The electrical maintenance safety auxiliary device for a thermal power plant according to claim 5, characterized in that: The moving mechanism (8) comprises a sliding pile (801), the outer wall of the sliding pile (801) is slidably connected to the inner wall of the insulating plug (1), the side wall of the sliding pile (801) is provided with a groove, the inner wall of the groove is fixedly connected to a sliding pile second spring (802), one end of the sliding pile second spring (802) is fixedly connected to a clamping block (803), one side of the clamping block (803) extends to the outside of the insulating plug (1) through a circular hole provided on the insulating plug (1), The upper side of the sliding pile (801) is fixedly connected to a motor (804), the lower side of the insulating plug rod (2) is fixedly connected to an insert tube (807), the lower end of the insert tube (807) is inserted into the upper side of the sliding pile (801), the outer wall of the output end of the motor (804) is fixedly connected to a fixed tube (805), the outer wall of the fixed tube (805) is fixedly connected to a first protrusion (806), and the inner wall of the insert tube (807) is fixedly connected to a second protrusion (808).

7. The electrical maintenance safety auxiliary device for a thermal power plant according to claim 6, characterized in that: The second protrusion (808) and the first protrusion (806) are both hemispherical structures, and the first protrusion (806) is rotatable. The second protrusion (808) is located on the rotation path of the first protrusion (806), and the insertion tube (807) cannot rotate relative to the sliding pile (801).

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