Core-through type columnar CT (Computed Tomography) plugging device

Abstract

The utility model relates to the technical field of generator air cooling systems, and provides a cross-core type columnar CT plugging device which comprises a threading pipe, a lock catch assembly and a plugging mechanism. By arranging the insulating plates and sleeving the two insulating plates on the outer side of the through core of the straight-through type columnar current transformer, holes are effectively blocked, the air leakage hidden danger of an air cooling system of a generator is eliminated, the cooling efficiency of the generator is improved, the service life of equipment is prolonged, and after the air leakage problem is eliminated, noise and vibration in a main open chamber of the generator can be remarkably reduced; damage to auditory sense of personnel is reduced, interference signal transmission is avoided, loosening and abrasion of electrical fastening parts are prevented, operation hidden dangers are reduced, meanwhile, sand grains entering the air cooling air chamber are reduced, and the surfaces of generator fan blades and stator windings are prevented from being impacted and damaged by the sand grains. The epoxy resin insulating plate has good insulating performance and mechanical strength, and the service life of the generator is prolonged. And meanwhile, the epoxy resin insulating plate is short in customization period and simple and convenient in process.

Description

TECHNICAL FIELD

[0001] The utility model relates to generator air cooling system technical field, concretely is a kind of through core columnar CT plugging device. BACKGROUND

[0002] At present, in generator air cooling system, most systems adopt closed self-circulation air cooling mode, and the cooler is placed in the lower pit of the generator bottom plate to cool the core heating components such as the stator and rotor of the generator, so as to ensure the stable operation of the generator. However, the generator air cooling wind chamber and the generator switch chamber are connected through the generator outlet (outlet bus, neutral point) partition wall, and usually six through core columnar CTs are installed to form six holes with a diameter of 25 cm, which can cause serious air leakage in the air cooling wind chamber. This not only reduces the cooling efficiency of the generator and accelerates the aging of the equipment, but also causes the noise and vibration in the generator opening room to be seriously out of standard. Moreover, the noise damages the hearing of the staff and interferes with signal transmission, and the vibration can also cause the electrical fastening components to loosen and accelerate wear, which poses a great risk in operation. In addition, due to the existence of the holes, a large amount of sand particles can accumulate in the four corners of the air cooling wind chamber, causing the generator fan blades and stator winding surface to be damaged by sand particles.

[0003] The traditional processing method is to block by partition, and the plugging effect is poor. Moreover, it is not suitable for the system, and static electricity can be generated during the working process, which can cause certain safety hazards. The threading process also does not have a matching solution, and usually the hole is cut for processing, which affects the plugging effect. The sealing of the cooling chamber is affected, and the plugging efficiency is low and the effect is poor. UTILITY MODEL CONTENT

[0004] The utility model content aims to provide a kind of through core columnar CT plugging device to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a kind of through core columnar CT plugging device, including threading pipe, lock catch assembly and plugging mechanism, the front of the threading pipe is provided with lock catch assembly, the inner side of the lock catch assembly is provided with plugging mechanism.

[0006] Preferably, the lock catch assembly includes a sealing groove, a sealing strip, a mounting bracket, a spring plug, a slot, a hasp bracket and a hasp ring. The front of the threading pipe is provided with a sealing groove. The sealing strip is movably connected inside the sealing groove. The sealing strip is adhered to the mounting bracket. The mounting bracket is matched in size with the threading pipe.

[0007] Preferably, the mounting frame is provided with two groups, one end of the mounting frame is fixedly connected with a spring plug, the other end of the mounting frame is provided with a slot, the spring plug is clamped with the slot, the spring plug corresponds to the slot in position, and the mounting frames are connected through the spring plug and the slot.

[0008] Preferably, the outer side of the mounting frame is fixedly connected with a buckle frame, and the outer side of the threading pipe is hingedly connected with a buckle ring, the buckle frame and the buckle ring are one-to-one corresponding.

[0009] Preferably, the sealing mechanism comprises insulating plates, limiting rings, limiting grooves, fixing grooves and fixing blocks, the insulating plates are provided with two groups, the insulating plates are made of epoxy resin material, the insulating plates are closely attached to the through core of the through core columnar current transformer, and the insulating plates are clamped in the inner side of the mounting frame through the limiting rings and the limiting grooves.

[0010] Preferably, one end of the insulating plate is fixedly connected with a fixing block, the other end of the insulating plate is provided with a fixing groove, the fixing groove is matched with the fixing block in size, and the insulating plates are connected through the fixing groove and the fixing block.

[0011] Compared with the prior art, the utility model has the advantages that:

[0012] The utility model discloses a through core columnar current transformer sealing device, including mounting frame, spring plug, slot, insulating plate, limiting ring, limiting groove, fixing groove and fixing block, the mounting frame is provided with two groups, one end of the mounting frame is fixedly connected with the spring plug, the other end of the mounting frame is provided with the slot, the spring plug is clamped with the slot, the spring plug corresponds to the slot in position, and the mounting frames are connected through the spring plug and the slot.

[0013] The utility model discloses a through core columnar current transformer sealing device, including mounting frame, spring plug, slot, insulating plate, limiting ring, limiting groove, fixing groove and fixing block, the mounting frame is provided with two groups, one end of the mounting frame is fixedly connected with the spring plug, the other end of the mounting frame is provided with the slot, the spring plug is clamped with the slot, the spring plug corresponds to the slot in position, and the mounting frames are connected through the spring plug and the slot. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is the appearance structure schematic view of the utility model.

[0015] Figure 2 It is the threading pipe structure schematic view of the utility model.

[0016] Figure 3 It is the back structure schematic view of the utility model's mounting frame.

[0017] Figure 4 It is the internal section structure schematic view of the utility model's mounting frame.

[0018] Figure 5 It is the cooperation schematic view of the utility model's insulating plate, limiting ring, fixed groove and fixed block.

[0019] In the drawing: 1, threading pipe; 2, lock catch assembly; 201, sealing groove; 202, sealing strip; 203, mounting frame; 204, spring plug buckle; 205, plug groove; 206, buckle frame; 207, buckle ring; 3, plugging mechanism; 301, insulating plate; 302, limiting ring; 303, limiting groove; 304, fixed groove; 305, fixed block. DETAILED DESCRIPTION

[0020] In order to make the technical means, creative features, purposes and effects realized by the utility model easy to understand, the utility model is further described below in combination with specific implementation manners.

[0021] In the description of the utility model, it should be pointed out that the orientation or position relationship indicated by the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end" and "another end" is the orientation or position relationship shown in the drawing, and is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model. In addition, the terms "first" and "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0022] In the description of the utility model, it should be pointed out that unless otherwise explicitly specified and limited, the terms "mounting", "provided with", "connection" and the like should be understood broadly, for example, "connection" can be fixed connection, can also be detachable connection, or integrally connected; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be the communication inside two elements. For ordinary skilled persons in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0023] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described, obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0024] Please refer to Figures 1-5 The utility model provides an embodiment: a kind of through core columnar CT plugging device, including threading pipe 1, lock catch assembly 2 and plugging mechanism 3, the front of threading pipe 1 is provided with lock catch assembly 2, the inside of lock catch assembly 2 is provided with plugging mechanism 3.

[0025] Specifically, lock catch assembly 2 includes sealing groove 201, sealing strip 202, mounting bracket 203, spring plug 204, slot 205, hasp bracket 206 and hasp ring 207, the front of threading pipe 1 is provided with sealing groove 201, sealing groove 201 is movably connected with sealing strip 202 in its inside, sealing strip 202 is adhered with mounting bracket 203, mounting bracket 203 is matched with the size of threading pipe 1, sealing groove 201 and sealing strip 202 cooperate, can fill the gap between mounting bracket 203 and threading pipe 1, ensure that plugging device airtightness.

[0026] Specifically, mounting bracket 203 is provided with two groups, one end of mounting bracket 203 is fixedly connected with spring plug 204, the other end of mounting bracket 203 is provided with slot 205, spring plug 204 is clamped with slot 205, spring plug 204 is positionally corresponding with slot 205, mounting bracket 203 is connected by spring plug 204 and slot 205, spring plug 204 cooperates with slot 205 to connect two mounting bracket 203.

[0027] Specifically, the outside of mounting bracket 203 is fixedly connected with hasp bracket 206, the outside of threading pipe 1 is hingedly connected with hasp ring 207, hasp bracket 206 and hasp ring 207 are one-to-one correspondence, after installation, hasp ring 207 and hasp bracket 206 are connected, can fix mounting bracket 203 in threading pipe 1, keep connection stable.

[0028] Specifically, the sealing mechanism 3 comprises two insulating plates 301, a limiting ring 302, a limiting groove 303, a fixing groove 304 and a fixing block 305. The insulating plates 301 are made of epoxy resin and are tightly fitted on the through core of the through core type cylindrical current transformer. The two insulating plates 301 are clamped on the inner side of the mounting frame 203 through the limiting ring 302 and the limiting groove 303, and are sleeved on the outer side of the through core of the through core type cylindrical current transformer, thereby effectively sealing the holes and eliminating the air leakage problem of the air cooling system of the generator, improving the cooling efficiency of the generator, prolonging the service life of the equipment, and significantly reducing the noise and vibration in the main opening room of the generator after eliminating the air leakage problem, reducing the damage to the hearing of personnel, avoiding interference with signal transmission, preventing the loosening and wear of electrical fastening parts, reducing the operation risk, and reducing the entry of sand particles into the air cooling chamber, avoiding the impact damage of sand particles on the surface of the fan blades and the stator winding of the generator, and the epoxy resin insulating plate 301 has good insulation performance and mechanical strength, can adapt to the working environment of the air cooling system of the generator, and has a short customization cycle and simple process, which can quickly and effectively solve the air leakage problem.

[0029] Specifically, one end of the insulating plate 301 is fixedly connected with the fixing block 305, and the other end of the insulating plate 301 is provided with the fixing groove 304. The fixing groove 304 is matched with the fixing block 305 in size, and the two insulating plates 301 are connected through the fixing groove 304 and the fixing block 305. The fixing groove 304 and the fixing block 305 can avoid the dislocation between the two insulating plates 301, which affects the sealing effect and causes air leakage.

[0030] Working principle: first, the two insulating plate 301 in the core of the core type cylindrical current transformer wear outside, effectively block the hole, eliminate the air leakage of the generator air cooling system, improve the cooling efficiency of the generator, prolong the service life of the equipment, eliminate the air leakage problem, can significantly reduce the noise and vibration in the main opening room of the generator, reduce the damage to the personnel hearing, avoid interference signal transmission, prevent electrical fastening parts loose and wear, reduce the operation risk, at the same time reduce the sand into the air cooling chamber, avoid the generator fan blade and stator winding surface sand impact damage, and the epoxy resin insulating plate 301 has good insulation performance and mechanical strength, can adapt to the working environment of the generator air cooling system, at the same time, the epoxy resin insulating plate 301 has short customization cycle, simple process, can quickly and effectively solve the air leakage problem, the fixed groove 304 and the fixed block 305 can avoid the dislocation between the two insulating plates 301, which can cause air leakage, then the spring plug 204 and the slot 205 are matched to connect the two mounting frames 203, the insulating plate 301 is clamped in the inside of the mounting frame 203 through the limiting ring 302 and the limiting groove 303, then the mounting frame 203 is installed on the front of the wire tube 1, after installation, the buckle ring 207 and the buckle frame 206 are connected, the mounting frame 203 can be fixed on the wire tube 1, keep the connection stable, at the same time, the sealing groove 201 and the sealing strip 202 can fill the gap between the mounting frame 203 and the wire tube 1, ensure the sealing performance of the sealing device.

[0031] The above only describes the embodiments of the present application, and the specific structure and characteristics of the scheme are not described in detail. For those skilled in the art, it is obvious that the present application is not limited to the details of the above exemplary embodiments, and can be realized in other specific forms without departing from the spirit or basic characteristics of the present application. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting, the scope of the present application is defined by the appended claims rather than the above description, therefore all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present application. Any reference signs in the claims should not be regarded as limiting the claims.

Claims

1. A through-and-through cylindrical CT occlusion device, comprising a wire-through tube (1), a lock catch assembly (2) and an occlusion mechanism (3), characterized in that: The front of the threading pipe (1) is fixedly connected with a lock catch assembly (2), and the inner side of the lock catch assembly (2) is provided with a plugging mechanism (3).

2. The crossing-over cylindrical CT occlusion device according to claim 1, characterized in that: The lock catch assembly (2) comprises a sealing groove (201), a sealing strip (202), a mounting frame (203), a spring plug (204), a plug groove (205), a buckle frame (206) and a buckle ring (207), the front of the threading pipe (1) is provided with a sealing groove (201), the inner side of the sealing groove (201) is movably connected with a sealing strip (202), the sealing strip (202) is adhesively connected with a mounting frame (203), and the mounting frame (203) is matched in size with the threading pipe (1).

3. The crossing-over cylindrical CT occlusion device according to claim 2, characterized in that: The mounting frame (203) is provided with two groups, one end of the mounting frame (203) is fixedly connected with a spring plug (204), the other end of the mounting frame (203) is provided with a plug groove (205), the spring plug (204) is clamped with the plug groove (205), the spring plug (204) is positionally corresponding to the plug groove (205), and the mounting frames (203) are connected through the spring plugs (204) and the plug grooves (205).

4. The crossing-over cylindrical CT occlusion device according to claim 2, characterized in that: The outer side of the mounting frame (203) is fixedly connected with a buckle frame (206), the outer side of the threading pipe (1) is hingedly connected with a buckle ring (207), and the buckle frame (206) and the buckle ring (207) are one-to-one corresponding.

5. The crossing-over cylindrical CT occlusion device according to claim 1, characterized in that: The plugging mechanism (3) comprises an insulating plate (301), a limiting ring (302), a limiting groove (303), a fixed groove (304) and a fixed block (305), the insulating plate (301) is provided with two groups, the insulating plate (301) is made of epoxy resin, the insulating plate (301) is closely fitted with the threading core of the through-type columnar current transformer, and the insulating plate (301) is clamped on the inner side of the mounting frame (203) through the limiting ring (302) and the limiting groove (303).

6. The crossing-over cylindrical CT occlusion device according to claim 5, characterized in that: One end of the insulating plate (301) is fixedly connected with a fixed block (305), the other end of the insulating plate (301) is provided with a fixed groove (304), the fixed groove (304) is matched in size with the fixed block (305), and the insulating plates (301) are connected through the fixed grooves (304) and the fixed blocks (305).

Images