Phase modifier monitoring device

Abstract

The invention relates to a phase modifier monitoring device in the technical field of phase modifiers, and the device comprises a case which is provided with a front side case door which can be rotatably opened and closed and is kept in a closed state in a suction manner; the storage box comprises a box body inner cavity, the bottom of the box body inner cavity is provided with a limiting structure abutting against the rear side of the storage box and a rotary clamping structure clamping the bottom of the front side of the storage box, and therefore the rotary clamping structure and the limiting abutting structure are matched to clamp and fix the storage box. The carrier plate is arranged behind the storage box at intervals through a sliding structure, and a monitoring module assembly is arranged on the front plate surface of the carrier plate; according to the temperature induction of the length of the first memory spring, the device can extend in a fire environment to push the carrier plate to enter the storage box, so that the monitoring module assembly is located in a closed space, and then the storage box is pushed to eject the rotary clamping structure open to close the front side box door to fly out, so that the device is separated from the fire, and the self-rescue effect is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of synchronous condensers, and in particular to a synchronous condenser monitoring device. Background Art

[0002] A synchronous condenser is one of the key power equipment in the power transmission and distribution system. The reliability of its operation is directly related to the safe and stable operation of the power grid. Some faults of the synchronous condenser may have some adverse effects on the unit, such as increased or excessive vibration, partial discharge, inter-turn short circuit fault of the rotor winding, and excessive shaft current, etc. It is very necessary to carry out on-line monitoring of these faults. Once a fault symptom is found, a warning can be issued in time to avoid serious consequences caused by the long-term continuation or further deterioration of the fault, which is of great significance for ensuring the normal operation of the synchronous condenser.

[0003] The existing Chinese invention authorization patent with the publication number of CN115133656B discloses an on-line monitoring and centralized control device for a power grid synchronous condenser, including a chassis and a monitoring module group installed inside the chassis (including a CPU module, a vibration monitoring module, a partial discharge monitoring module, an shaft current monitoring module, an inter-turn short circuit monitoring module of the rotor winding, and multiple communication modules, etc.). This device realizes accurate and efficient integrated monitoring of the main fault types of the synchronous condenser. However, when a fire occurs around it during use, as the fire spreads, the module components inside it cannot carry out self-rescue, resulting in the burning out of the module components inside, causing huge losses.

[0004] Therefore, we have designed a synchronous condenser monitoring device. Summary of the Invention

[0005] In order to overcome the deficiencies in the background art, the present invention discloses a synchronous condenser monitoring device.

[0006] To achieve the above invention purpose, the present invention adopts the following technical solutions: A synchronous condenser monitoring device, comprising: A chassis, the box body of which has a front side box door that can rotate and open and is kept closed by a suction method; A storage box, at the bottom of the inner cavity of the box body, there is a limiting structure that abuts against the rear side of the storage box and a rotating clamping structure that clamps the front side bottom of the storage box, so as to facilitate clamping and fixing the storage box through the cooperation of the rotating clamping structure and the limiting and abutting structure; A carrier plate, which is arranged at intervals behind the storage box through a sliding structure. The front plate surface of the carrier plate is provided with a monitoring module assembly, and a first memory spring that can elongate at high temperature is arranged between the rear plate surface and the inner rear wall of the chassis. At least one end of the first memory spring is a free end, so as to push the carrier plate into the storage box at high temperature, and then push the storage box to move to push open the rotating clamping structure and the front side box door and fly out; Among them, the monitoring module assembly is correspondingly connected to the synchronous condenser through a pluggable joint, and the pluggable joint is connected to the corresponding monitoring module assembly through a spiral cable.

[0007] Preferably, the rotating engaging structure includes: A rotating member is provided below the storage box. The rear end of the rotating member is rotatably connected to the chassis correspondingly, and the front end is provided with an engaging portion that matches the front side of the storage box through a curved surface or an inclined surface. A support spring is provided between the rotating member and the inner bottom wall of the chassis, and is used to upwardly press the rotating member so that the engaging portion engages with the bottom of the front side of the storage box.

[0008] Preferably, a base is provided at the inner bottom of the chassis, the storage box is placed on the top surface of the base, the limiting structure is provided at the rear end of the top surface of the base, and the rotating engaging structure is provided at the front end.

[0009] Preferably, the top surface of the base is a plane that is higher at the front and lower at the rear, and both sides have upper extending portions that correspondingly limit the side portions of the storage box.

[0010] Preferably, the inner wall of the storage box has a heat-resistant flexible material, and the front end of the first memory spring is fixedly connected to the carrier plate to facilitate the protection of the flying storage box and the carrier plate.

[0011] Preferably, the sliding structure includes a slide bar that penetrates the carrier plate and a slide sleeve that is slidably sleeved on the body of the slide bar and is fixedly connected to the inner side wall of the storage box.

[0012] Preferably, a liquid storage tank for storing insulating liquid and a spray cooling assembly connected to the liquid storage tank are provided at a position corresponding to above the carrier plate in the inner cavity of the chassis to facilitate the cooling of the monitoring module assembly.

[0013] Preferably, the spray cooling assembly includes a piston cylinder vertically provided in the upper section of the inner cavity of the chassis. A second memory spring that can elongate at high temperature is provided between the upper plate surface of the piston plate in the piston cylinder and the inner top wall of the chassis. A three-way pipe is provided at the lower end of the piston cylinder body, and the other two ends of the three-way pipe are respectively provided with an atomizing nozzle and are connected to the liquid storage tank through a one-way valve.

[0014] Preferably, a flexible sealing ring is provided at the outer edge of the piston plate in the piston cylinder, and a plurality of annular ridges are uniformly spaced along the axial direction on the inner wall of the cylinder body in the piston cylinder.

[0015] Due to the adoption of the above technical solutions, the present invention has the following beneficial effects: 1. It can sense the temperature according to the length of the first memory spring, and can elongate in a fire environment to first push the carrier plate into the storage box, so that the monitoring module assembly is in a closed space. Then, it can further push the storage box to push open the rotating engaging structure and fly out of the front side door of the box, thereby getting out of the fire to achieve the self-rescue effect; 2. It can sense the temperature according to the length of the second memory spring, and can elongate in a high-temperature environment so that the insulating liquid in the piston cylinder is ejected in the form of mist to cool and self-rescue the monitoring module assembly, the carrier board and the first memory spring. When the surrounding temperature continues to rise, the first memory spring is used to achieve the effect of the monitoring module assembly flying out for self-rescue; when the surrounding temperature drops, the second memory spring returns to its free state and pulls the piston plate back to its original position, so that the insulating liquid in the piston cylinder is replenished, preparing for the next cooling and self-rescue after the temperature rises abnormally. 3. According to the principle that hot air rises and cold air descends, and the effect of the spray cooling assembly on the first memory spring, the second memory spring will act prior to the first memory spring to achieve self-cooling and self-rescue first, and then fly out for self-rescue. 4. With the setting of the flexible sealing ring and the annular convex rib, during the elongation process of the second memory spring, the elastic potential energy of the second memory spring will increase because the flexible sealing ring is blocked by the annular convex rib, and then it is quickly released, improving the spray effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic structural diagram of the present invention; Figure 2 is Figure 1 the A-A cross-sectional view in Figure 3 is Figure 2 the partial enlarged view I in Figure 4 is a schematic structural diagram of the cooperation structure of the storage box, the carrier board, the first memory spring and the base in the present invention; Figure 5 is the right view of the cooperation structure of the storage box, the carrier board, the first memory spring and the base in the present invention; Figure 6 is Figure 5 the schematic diagram of the state where the carrier board is stored in the inner cavity of the storage box in Figure 7 is Figure 5 the schematic diagram of the state where the storage box is about to fly out in Figure 8 is a schematic structural diagram of the cooperation structure of the liquid storage tank and the spray cooling assembly in the present invention.

[0017] Schematic structural diagram of the present invention.

[0018] In the figure: 1. Chassis; 101. Box body; 102. Front side box door; 103. Magnet; 2. Storage box; 3. Carrier plate; 4. First memory spring; 5. Slide bar; 6. Slide sleeve; 7. Rotating part; 701. Engaging part; 8. Support spring; 9. Plug-and-play connector; 10. Base; 11. Liquid storage tank; 12. Spray cooling assembly; 121. Piston cylinder; 1211. Flexible sealing ring; 1212. Annular rib; 122. Second memory spring; 123. Three-way pipe; 124. Atomizing nozzle; 125. Check valve. Detailed implementation manners

[0019] The present invention can be explained in detail through the following embodiments. The purpose of disclosing the present invention is to protect all technical improvements within the scope of the present invention. In the description of the present invention, it should be understood that if there are terms such as "upper", "lower", "front", "rear", "left", "right", etc. indicating the orientation or position relationship, it is only corresponding to the drawings of the present application for the convenience of describing the present invention; it should be understood that if there are terms such as "end", "side", "end part", "side part", "transverse", "longitudinal", etc. indicating the orientation or position relationship, it is only corresponding to the length and width of the corresponding component, that is, the "end part" indicates the head and tail regions in the length direction of the corresponding component, and the "side part" indicates the head and tail regions in the width direction of the corresponding component; it is for the convenience of describing the present invention rather than indicating or implying that the device or element referred to must have a specific orientation.

[0020] Example 1, in combination with the attached Figure 1-2 and Figures 4 - 7, a synchronous condenser monitoring device includes a chassis 1, a storage box 2 and a carrier plate 3; Among them, the chassis 1 has a box body 101 with an opening at the front side. The bottom of the opening side of the box body 101 is hinged with a front side box door 102. The top of the front side box door 102 and the top of the opening side of the box body 101 are in a suction state so that the front side box door 102 is in a closed state. As needed, the top of the opening side of the box body 101 and / or the top of the front side box door 102 has a magnet 103, and the front side box door 102 made of a magnetically conductive material, the top of the opening side of the box body 101 made of a magnetically conductive material or the magnet 103 are used to achieve suction.

[0021] As needed, when the front side box door 102 is in a closed state, the front side box door 102 can be in a vertical state, or the upper end of the front side box door 102 can be located in front of the lower end of the front side box door 102, that is, after the front side box door 102 is pushed open, it can be quickly opened.

[0022] The inner cavity of the box body 101 is provided with a storage box 2, and the bottom of the inner cavity is also provided with a limiting structure that abuts against the rear side of the storage box 2 and a rotating engaging structure that engages with the front bottom of the storage box 2. The storage box 2 is clamped and fixed through the cooperation of the rotating engaging structure and the limiting and abutting structure.

[0023] A carrier plate 3 is provided at the rear of the storage box 2 at intervals through a sliding structure. A monitoring module assembly is provided on the front board surface of the carrier plate 3, and a first memory spring 4 capable of elongating at high temperatures is provided between the rear board surface and the inner rear wall of the chassis 1. At least one end of the first memory spring 4 is a free end. Here, the free end can be understood as not being connected to it, and it only needs to abut against a component.

[0024] In a possible implementation manner, the sliding structure includes a slide bar 5 passing through the carrier plate 3 and a slide sleeve 6 slidably sleeved on the rod body of the slide bar 5 and fixed to the inner side wall of the storage box 2.

[0025] As needed, the first memory spring 4 can be made of CuZnAl memory alloy wire, which can be in a free state at room temperature and in an elongated state at high temperatures (80°C to 95°C). Taking the first memory spring 4 to be 45 mm at room temperature as an example, when the temperature rises to 80°C to 95°C, its length can elongate by 150 to 160 mm, reaching 195 to 205 mm. That is, when the temperature of the chassis 1 reaches 80°C to 95°C, it can indicate that there is a fire situation in the environment of the chassis 1. At this time, the first memory spring 4 elongates to push the carrier plate 3 into the storage box 2, and then pushes the storage box 2 to move and push open the rotating engagement structure and the front side door 102 and fly out.

[0026] To ensure that the storage box 2 affected by the thrust of the first memory spring 4 can push open the rotating engagement structure, the rotating engagement structure and the front side of the storage box 2 are matched through a curved surface or an inclined surface to ensure that the movement of the storage box 2 under the thrust of the first memory spring 4 can open the rotating engagement structure.

[0027] As needed, the rotating engagement structure includes a rotating member 7 located below the storage box 2 and a support spring 8. The rear end of the rotating member 7 is rotatably connected to the chassis 1 correspondingly, and the front end is provided with an engaging portion 701 that matches the front side surface of the storage box 2 through a curved surface or an inclined surface; The support spring 8 is provided between the rotating member 7 and the inner bottom wall of the chassis 1 and is used to press the rotating member 7 upward so that the engaging portion 701 is engaged with the bottom of the front side of the storage box 2; that is, the engaging portion 701 can squeeze the support spring 8 and turn downward under the action of the storage box 2, losing the engaging effect on the storage box 2, and further enabling the storage box 2 to obtain a large kinetic energy and fly out at the moment when the blocking of the engaging portion 701 is lost.

[0028] It should be noted that: the support spring 8 is a spring with a small elastic coefficient.

[0029] Further, the monitoring module assembly is correspondingly connected to the synchronous condenser through a pluggable connector 9, and the pluggable connector 9 is connected to the corresponding monitoring module assembly through a spiral cable. Specifically, the plugging and unplugging direction of the pluggable connector 9 is the same as the direction of the sliding structure. It should be noted that: the pluggable connector 9 adopts a pluggable connector 9 without a self-locking function, and only ensures the fit of the pluggable connector 9 through a friction fit. Since the pluggable connector 9 is a prior art, its specific details will not be elaborated here.

[0030] To prevent the flying monitoring module assembly from being damaged, the inner wall of the storage box 2 is made of a high-temperature resistant flexible material, and the front end of the first memory spring 4 is fixedly connected to the carrier plate 3 to facilitate the protection of the flying storage box 2 and the carrier plate 3.

[0031] As needed, to better facilitate the manufacture of the rotating engagement structure and the limiting structure, the rotating engagement structure and the limiting structure are integrated on a base 10, that is, a base 10 is provided at the inner bottom of the chassis 1, the storage box 2 is placed on the top surface of the base 10, the limiting structure is provided at the rear end of the top surface of the base 10, and the rotating engagement structure is provided at the front end. Further, the top surface of the base 10 is a plane that is higher at the front and lower at the rear, and both sides have upper extending parts corresponding to restricting the side parts of the storage box 2. This is conducive to modular design and reduces the manufacturing difficulty.

[0032] It should be noted that: the monitoring module assembly adopts the prior art, such as the monitoring module assembly disclosed in the Chinese patent with the publication number CN115133656B, and its specific details will not be elaborated here.

[0033] Embodiment 2, in combination with Figure 1-3 and 8, a synchronous condenser monitoring device. On the basis of Embodiment 1, a liquid storage tank 11 for storing insulating liquid and a spray cooling assembly 12 connected to the liquid storage tank 11 are provided at a position corresponding to above the carrier plate 3 in the inner cavity of the chassis 1 to facilitate cooling the monitoring module assembly. That is, the spray cooling assembly 12 sprays downward from above, first cooling and self-saving the monitoring module assembly, the carrier plate 3, and the first memory spring 4. When the surrounding temperature continues to rise, the first memory spring 4 elongates, causing the storage box 2 and the carrier plate 3 with the monitoring module assembly to fly out to achieve further self-saving.

[0034] Preferably, the insulating liquid is a liquid that is easy to volatilize.

[0035] As required, the spray cooling assembly 12 includes a piston cylinder 121 vertically arranged in the upper section of the inner cavity of the chassis 1. A second memory spring 122 capable of elongating at high temperatures is provided between the upper plate surface of the piston plate in the piston cylinder 121 and the inner top wall of the chassis 1. A three-way pipe 123 is provided at the lower end of the cylinder body of the piston cylinder 121. The other two ends of the three-way pipe 123 are respectively provided with an atomizing nozzle 124 and are connected to the liquid storage tank 11 through a one-way valve 125. Specifically, the one-way valve 125 enables the insulating liquid in the liquid storage tank 11 to flow into the cylinder body, while the insulating liquid in the cylinder body cannot flow into the liquid storage tank 11.

[0036] As required, the material of the second memory spring 122 can be the same as that of the first memory spring 4. Due to the rise of high-temperature gas, the fall of low-temperature gas, and the action of the spray cooling assembly 12 on the first memory spring 4, the second memory spring 122 will elongate prior to the first memory spring 4, achieving self-rescue by cooling first and then flying out for self-rescue. At the same time, when the surrounding temperature drops to room temperature after self-rescue by cooling, the second memory spring 122 will pull the piston plate back to its reset position during the process of returning to its free state. At this time, the insulating liquid in the piston cylinder 121 will be replenished, facilitating self-rescue by cooling after the temperature abnormally rises again next time.

[0037] Further, to ensure a better spraying effect of the atomizing nozzle 124, a flexible sealing ring 1211 is provided at the outer edge of the piston plate in the piston cylinder 121. A plurality of annular ridges 1212 are evenly spaced along the axial direction of the inner wall of the cylinder body in the piston cylinder 121. That is, when the flexible sealing ring 1211 moves to the position of the annular ridge 1212, the flexible sealing ring 1211 will be blocked by the annular ridge 1212. When the pressure of the second memory spring 122 on the piston plate accumulates until the flexible sealing ring 1211 crosses the annular ridge 1212, it will cause the piston plate to have a certain potential energy to extrude the liquid in the piston cylinder 121, enabling the atomizing nozzle 124 to spray better.

[0038] The parts not detailed in the present invention are prior art. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting, aiming to include all changes falling within the meaning and scope of the equivalent elements within the present invention.

Claims

1. A phase condenser monitoring device, characterized in that: include: A case (1), wherein the case body (101) has a front case door (102) that can be rotated to open and close and can be kept in a closed state by suction; A storage box (2), an inner cavity of the box body (101), wherein the bottom of the inner cavity of the box body (101) is provided with a limiting structure that abuts against the rear side of the storage box (2) and a rotational engaging structure that engages with the bottom of the front side of the storage box (2), so that the storage box (2) can be clamped and fixed by the rotational engaging structure and the limiting abutting structure; A carrier plate (3) is arranged at the rear of the storage box (2) via a sliding structure, a monitoring module assembly is provided on the front panel of the carrier plate (3), and a first memory spring (4) capable of elongating at high temperature is provided between the rear panel and the inner rear wall of the chassis (1), and at least one end of the first memory spring (4) is a free end, so as to facilitate pushing the carrier plate (3) into the storage box (2) at high temperature, and then pushing the storage box (2) to move, push open the rotating locking structure and the front side box door (102), and then fly out; The monitoring module assembly is connected to the phase regulator via a plug-in connector (9), and the plug-in connector (9) is connected to the corresponding monitoring module assembly via a spiral cable.

2. The phase modulator monitoring device according to claim 1, characterized in that: The rotating engaging structure comprises: A rotating member (7) is disposed below the storage box (2); the rear end of the rotating member (7) is correspondingly connected to the chassis (1) in a rotational manner, and the front end is provided with a snap-fitting portion (701) that matches the front side surface of the storage box (2) through a curved surface or an inclined surface; The support spring (8) is disposed between the rotating member (7) and the inner bottom wall of the chassis (1) and is used to press the rotating member (7) upward so that the engaging portion (701) engages with the front bottom of the storage box (2).

3. The phase modulator monitoring device according to claim 1, characterized in that: The bottom of the chassis (1) is provided with a base (10), the storage box (2) is placed on the top surface of the base (10), the rear end of the top surface of the base (10) is provided with the limiting structure, and the front end is provided with the rotating locking structure.

4. The phase modulator monitoring device according to claim 3, characterized in that: The top surface of the base (10) is a plane that is higher in the front and lower in the back, and has upper extensions on both sides that correspond to limiting the side portions of the storage box (2).

5. The phase modulator monitoring device according to claim 1, characterized in that: The inner wall of the storage box (2) is made of high temperature resistant flexible material, and the front end of the first memory spring (4) is fixedly connected to the carrier plate (3) so as to protect the storage box (2) and the carrier plate (3) from flying out.

6. The phase modulator monitoring device according to claim 1, characterized in that: The sliding structure comprises a sliding rod (5) penetrating the carrier plate (3) and a sliding sleeve (6) slidingly sleeved on the rod body of the sliding rod (5) and fixedly connected to the inner wall of the storage box (2).

7. The phase modulator monitoring device according to claim 1, characterized in that: A liquid storage tank (11) for storing insulating liquid and a spray cooling component (12) connected to the liquid storage tank (11) are provided at a position above the carrier plate (3) in the inner cavity of the chassis (1) so as to cool the monitoring module component.

8. The phase modulator monitoring device according to claim 7, characterized in that: The spray cooling assembly (12) comprises a piston cylinder (121) vertically arranged in the upper section of the inner cavity of the chassis (1); a second memory spring (122) capable of elongating at high temperatures is arranged between the upper surface of the piston plate in the piston cylinder (121) and the inner top wall of the chassis (1); a three-way pipe (123) is arranged at the lower end of the cylinder body of the piston cylinder (121); and atomizing nozzles (124) are respectively arranged at the other two ends of the three-way pipe (123) and are connected to the liquid storage tank (11) via a one-way valve (125).

9. The phase modulator monitoring device according to claim 8, characterized in that: A flexible sealing ring (1211) is provided at the outer edge of the piston plate in the piston cylinder (121), and a plurality of annular ridges (1212) are evenly spaced along the axial direction on the inner wall of the cylinder body in the piston cylinder (121).

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